The document describes the process of using molecular sieves to dehydrate alcohol and produce anhydrous ethanol. It involves passing vaporized 190 proof alcohol through a molecular sieve bed to adsorb water. The beds are regenerated under vacuum to release water. The beds alternate between online dehydration and regeneration modes to continuously produce 200 proof ethanol. The ethanol is then denatured by adding gasoline before storage to render it undrinkable.
Agitation and Mixing are two important unit operations used in industries such as Impellers agitators are widely used to circulate the liquid through the vessel in which the dispersion of liquids and gases into other liquids like mixing of stiff paste, elastomers and dry solids powders takes place.
The processing technique employing a suspension or fluidization of small solid particles in a vertically rising stream of fluid usually gas so that fluid and solid come into intimate contact. This is a tool with many applications in the petroleum and chemical process industries. Suspensions of solid particles by vertically rising liquid streams are of lesser interest in modern processing, but have been shown to be of use, particularly in liquid contacting of ion-exchange resins. However, they come in this same classification and their use involves techniques of liquid settling, both free and hindered (sedimentation), classification, and density flotation.
Solid Catalyzed Reactions
0 INTRODUCTION/PURPOSE
1 SCOPE
2 FIELD OF APPLICATION
3 DEFINITIONS
4 GENERAL BACKGROUND
4.1 General Considerations
5 SOLID CATALYZED GAS REACTIONS
5.1 Reaction Kinetics
5.2 Tests for Transport Limitations
5.3 Building a Reaction Kinetic Equation
6 INTRAPARTICLE
6.1 Types of Pore System
6.2 The Catalyst Effectiveness Factor
6.3 The Measurement of Effective Diffusivity
7 ENHANCEMENT OF INTRAPARTICLE
8 NOMENCLATURE
8.1 Dimensionless Parameters
8.2 Greek Letters
8.3 Subscripts
9 BIBLIOGRAPHY
9.1 Further Reading
APPENDICES
A LANGMUIR - HINSHELWOOD KINETICS
FIGURES
1 EFFECTIVE RATE CONSTANT
2 ITERATIVE APPROACH TO REACTOR MODEL
DEVELOPMENT
3 COMMON LABORATORY MICROREACTORS (FLOW TYPE)
4 THE BERTY REACTOR
5 STEPS IN BUILDING A REACTION RATE EQUATION
6 A CENTRAL-COMPOSITE DESIGN FOR TWO FACTORS
7 FIRST ORDER ISOTHERMAL IRREVERSIBLE
REACTION WITHIN A CATALYST SPHERE
8 INTEGRAL YIELD vs CONVERSION SHOWING EFFECT OF PELLET DIFFUSION
9 PREDICTED AND EXPERIMENTAL EFFECTIVENESS FACTORS
10 STRUCTURAL PERMEABILITY vs PRESSURE PARAMETER Z FOR BI-MODAL SUPPORTS
11 EFFECTIVENESS FACTOR vs THIELE MODULUS AND INTRAPARTICLE PECLET NUMBER
12 RELATIVE INCREASE IN CATALYST PERFORMANCE
Agitation and Mixing are two important unit operations used in industries such as Impellers agitators are widely used to circulate the liquid through the vessel in which the dispersion of liquids and gases into other liquids like mixing of stiff paste, elastomers and dry solids powders takes place.
The processing technique employing a suspension or fluidization of small solid particles in a vertically rising stream of fluid usually gas so that fluid and solid come into intimate contact. This is a tool with many applications in the petroleum and chemical process industries. Suspensions of solid particles by vertically rising liquid streams are of lesser interest in modern processing, but have been shown to be of use, particularly in liquid contacting of ion-exchange resins. However, they come in this same classification and their use involves techniques of liquid settling, both free and hindered (sedimentation), classification, and density flotation.
Solid Catalyzed Reactions
0 INTRODUCTION/PURPOSE
1 SCOPE
2 FIELD OF APPLICATION
3 DEFINITIONS
4 GENERAL BACKGROUND
4.1 General Considerations
5 SOLID CATALYZED GAS REACTIONS
5.1 Reaction Kinetics
5.2 Tests for Transport Limitations
5.3 Building a Reaction Kinetic Equation
6 INTRAPARTICLE
6.1 Types of Pore System
6.2 The Catalyst Effectiveness Factor
6.3 The Measurement of Effective Diffusivity
7 ENHANCEMENT OF INTRAPARTICLE
8 NOMENCLATURE
8.1 Dimensionless Parameters
8.2 Greek Letters
8.3 Subscripts
9 BIBLIOGRAPHY
9.1 Further Reading
APPENDICES
A LANGMUIR - HINSHELWOOD KINETICS
FIGURES
1 EFFECTIVE RATE CONSTANT
2 ITERATIVE APPROACH TO REACTOR MODEL
DEVELOPMENT
3 COMMON LABORATORY MICROREACTORS (FLOW TYPE)
4 THE BERTY REACTOR
5 STEPS IN BUILDING A REACTION RATE EQUATION
6 A CENTRAL-COMPOSITE DESIGN FOR TWO FACTORS
7 FIRST ORDER ISOTHERMAL IRREVERSIBLE
REACTION WITHIN A CATALYST SPHERE
8 INTEGRAL YIELD vs CONVERSION SHOWING EFFECT OF PELLET DIFFUSION
9 PREDICTED AND EXPERIMENTAL EFFECTIVENESS FACTORS
10 STRUCTURAL PERMEABILITY vs PRESSURE PARAMETER Z FOR BI-MODAL SUPPORTS
11 EFFECTIVENESS FACTOR vs THIELE MODULUS AND INTRAPARTICLE PECLET NUMBER
12 RELATIVE INCREASE IN CATALYST PERFORMANCE
Current advancement in different gas liquid operationsSunny Chauhan
CURRENT ADVANCEMENT IN DIFFERENT GAS-LIQUID OPERATIONS,Gas Liquid operation equipment
,Extractive distillation
,Advances in Gas Absorption,High efficiency venturi scrubber
,Advances in Diffusion
,Advances in Stirred Tanks
,Advances in Distillation
,Advances in Venturi Scrubber
wholw Content is covered in this presentation .it will give u a basic idea and types about leaching and it will also provide u information via Diagrams .
The presentation is based on Mass Transfer the major subject of Chemical Engineering. It includes
Separation
Technologies
Typical Applications
Industries
Distillation vs. Extraction
LLE Extraction
LLE extraction Principle
Solvent
Operation Condition
Mode of Operation
Extractor Type
Design Criteria
Equipment for extraction
This is a descriptive note on Membrane separation. If you like this note or content please like comment and share. Your like inspires me very much .Thank you.
Slides for the eLearning course Separation and purification processes in biorefineries (https://open-learn.xamk.fi) in IMPRESS project (https://www.spire2030.eu/impress).
Section: Mass transfer processes
Subject: 3.2 Equipment
Difference between batch,mixed flow & plug-flow reactorUsman Shah
This slide completely describes you about the stuff include in it and also everything about chemical engineering. Fluid Mechanics. Thermodynamics. Mass Transfer Chemical Engineering. Energy Engineering, Mass Transfer 2, Heat Transfer,
The first lecture in the module Particle Technology, delivered to second year students who have already studied basic fluid mechanics. Some applications of Particle Technology are described, in industry and nature, and particle size analysis and means of representing the data. The format for the laboratory classes for the module and their reports are covered.
Presentation on Azeotropic and Extractive Distillation. Introduction about distillation, azeotropic and extractive distillation and the difference between them.
These slides use concepts (e.g., scaling) from my (Jeff Funk) course entitled analyzing hi-tech opportunities to analyze how membranes have and are becoming more economically feasible for one application, pervaporation. The economic feasibility of pervaporation is improved as temperatures and pressures of the systems are increased, which are facilitated by larger scale, and as the membranes are improved. Membranes become cheaper as they are made thinner (example of scaling) and they become better as the pore size is made both smaller and is designed for allowing specific molecules to pass through the pores.
Started to create milestones, SORBEAD INDIA marked our presence in the year 1996 and operate in the manufacturing and servicing of silica gel, molecular sieve, activated alumina balls and molecular sieve powder, silica gel powder and supplier of desiccant tablets, pillow pak, unit pak, cargo dry pak, oxygen absorber packets, humidity indicator cards and other desiccants since 16 years. Our qualified products have been always appreciated by our clients. SORBEAD INDIA breathe with the aim of fully satisfying our clients with our high-quality products and services. We are a unit of highly experienced professionals, all of them contributing at the best of their potentials to offer the highest degree of efficiency and client satisfaction.
Current advancement in different gas liquid operationsSunny Chauhan
CURRENT ADVANCEMENT IN DIFFERENT GAS-LIQUID OPERATIONS,Gas Liquid operation equipment
,Extractive distillation
,Advances in Gas Absorption,High efficiency venturi scrubber
,Advances in Diffusion
,Advances in Stirred Tanks
,Advances in Distillation
,Advances in Venturi Scrubber
wholw Content is covered in this presentation .it will give u a basic idea and types about leaching and it will also provide u information via Diagrams .
The presentation is based on Mass Transfer the major subject of Chemical Engineering. It includes
Separation
Technologies
Typical Applications
Industries
Distillation vs. Extraction
LLE Extraction
LLE extraction Principle
Solvent
Operation Condition
Mode of Operation
Extractor Type
Design Criteria
Equipment for extraction
This is a descriptive note on Membrane separation. If you like this note or content please like comment and share. Your like inspires me very much .Thank you.
Slides for the eLearning course Separation and purification processes in biorefineries (https://open-learn.xamk.fi) in IMPRESS project (https://www.spire2030.eu/impress).
Section: Mass transfer processes
Subject: 3.2 Equipment
Difference between batch,mixed flow & plug-flow reactorUsman Shah
This slide completely describes you about the stuff include in it and also everything about chemical engineering. Fluid Mechanics. Thermodynamics. Mass Transfer Chemical Engineering. Energy Engineering, Mass Transfer 2, Heat Transfer,
The first lecture in the module Particle Technology, delivered to second year students who have already studied basic fluid mechanics. Some applications of Particle Technology are described, in industry and nature, and particle size analysis and means of representing the data. The format for the laboratory classes for the module and their reports are covered.
Presentation on Azeotropic and Extractive Distillation. Introduction about distillation, azeotropic and extractive distillation and the difference between them.
These slides use concepts (e.g., scaling) from my (Jeff Funk) course entitled analyzing hi-tech opportunities to analyze how membranes have and are becoming more economically feasible for one application, pervaporation. The economic feasibility of pervaporation is improved as temperatures and pressures of the systems are increased, which are facilitated by larger scale, and as the membranes are improved. Membranes become cheaper as they are made thinner (example of scaling) and they become better as the pore size is made both smaller and is designed for allowing specific molecules to pass through the pores.
Started to create milestones, SORBEAD INDIA marked our presence in the year 1996 and operate in the manufacturing and servicing of silica gel, molecular sieve, activated alumina balls and molecular sieve powder, silica gel powder and supplier of desiccant tablets, pillow pak, unit pak, cargo dry pak, oxygen absorber packets, humidity indicator cards and other desiccants since 16 years. Our qualified products have been always appreciated by our clients. SORBEAD INDIA breathe with the aim of fully satisfying our clients with our high-quality products and services. We are a unit of highly experienced professionals, all of them contributing at the best of their potentials to offer the highest degree of efficiency and client satisfaction.
The chemical industry comprises the companies that produce industrial chemicals. Central to the modern world economy, it converts raw materials (oil, natural gas, air, water, metals, and minerals) into several different products. The Indian chemical industry is among the established traditional sectors of the country, playing an integral role in the national economic development. This sector, forming part of the basic goods industry, is a critical input for industrial and agricultural development. The fundamental nature and diversity of the industry is best understood from the fact that the industry itself is the largest consumer of its products, accounting for around 33% of total consumption. Alcohol is a very valuable material which has variety of uses such as for production of chemicals, as a source of energy and fuel etc. an alcohol is an organic compound in which the hydroxyl functional group (OH) is bound to a carbon atom. In particular, this carbon centre should be saturated, having single bonds to three other atoms. Some of the common examples of alcohol and its derivatives are acetaldehyde, acetic acid, chloroacetic acid, acetic anhydride, dimethyl acetamide, butyl alcohols, ethyl acetate, butyl acetate, cellulose acetate, ethyl ether and many more. Ethanol can be used in the pharmaceutical, cosmetics, solvents, food, and chemical industries with a majority of industrial ethanol used as a solvent in the manufacture of pharmaceuticals, paints, and lacquers. It is also used as a carrier in medicines.
For more details visit at: http://goo.gl/RUCT7Z
http://www.entrepreneurindia.co/
Tags
Acetaldehyde manufacturing process, Acetamide Manufacturing Process, Acetic Acid manufacturing process, Acetic Anhydride Manufacturing Process, Acetone Manufacturing Process, Acetyl Chloride Manufacturing Process, Acrylic Acid and Derivatives Manufacturing Process, Alcohol Availability for Chemical Industry, Alcohol based chemical Based Profitable Projects, Alcohol based chemical Based Small Scale Industries Projects, Alcohol based chemical industry, Alcohol based chemical Processing Industry in India, Alcohol based chemical Processing Projects, Alcohol Based Chemicals, Alcohol based chemicals making machine factory, Alcohol based chemicals Making Small Business Manufacturing, Alcohol based chemicals manufacturing Business, Book on Chemical Industries Alcohol Based, Business guidance for alcohol based chemicals production, Business guidance to clients, Butadiene Manufacturing Process, Butyl Acetates Manufacturing Process, Butyl Alcohols Manufacturing Process, Butyraldehyde Manufacturing Process, By Products of Alcohol, Cellulose Acetate Manufacturing Process, Chemical alcohol based business opportunities, Chloral Manufacturing Process, Diethyl Sulphate Manufacturing Process, Dimethyl acetamide Manufacturing Process, Ethyl Acetate Manufacturing Process
Thermodynamic simulation of year round air conditioning system for variable r...eSAT Journals
Abstract This paper presents a study on different kinds of air conditioning systems in association to existing one to use through of the year. The system have generally desiccant wheel, evaporative cooler, heating coils and cooling coil. Mainly the system imparts all three regular weather conditions. Like hot and dry, hot and wet and cool and dry. For this the out let condition will be fixed 25 dry bulb temperature (DBT) and 50% relative humidity. In the present paper, for maintaining room condition thermodynamic simulation is being done. If rotational speed of desiccant wheel is changed, the year round air conditioning equipments change own parameter to maintain the room condition .The paper also shows the variation in supply condition of air, volume of cellulose cooling pad of evaporating cooler, temperature of cooling coil in hot and wet weather conditions with respect to rotational speed of desiccant wheel (6 to 24rph).The outlet temperature of desiccant wheel increases 52.96 to 63.28°C.The efficiency of desiccant wheel increases where as saturation efficiency of evaporative cooler decreases. The volume of cooling pad decreases from 547.99 to 439.54 cm3 w.r.t. the rotational speed of desiccant wheel. The DBT and the specific humidity of supply air remain constant with the change of rotational speed of desiccant wheel. Key Words: Heating coil, Cooling coil, Desiccant Wheel, Cellulose cooling pad, Supply condition.
Max Tech and Beyond Appliance Design Competition Winning PresentationUS Department of Energy
Max Tech and Beyond challenged university teams to design and build energy efficient appliances that go beyond current technology on the market. As part of the competition, teams had to present their results during a webinar on May 23, 2012. The presentation from the winning team -- the University of Maryland -- explains its design for a wall air conditioner with separate systems for cooling and removing moisture from indoor air.
HTS Engineering Company Presentation by Evan Millerevmiller5
HTS Engineering - Boston Company Presentation created by Evan Miller. Presentation emphasizes customizability of the HTS product line. HTS Engineering is a Toronto based firm with offices throughout the United States. HTS represents HVAC manufacturers.
industrial services in the engineering department responsible for ensuring smooth running of any industrial facilities by provide power, refrigeration, water and all other amenities
Suspension may be defined as preparations containing finally divided drug particles (the suspenoid) distributed somewhat uniformly throughout a vehicle in which the drug exhibits a minimum degree of solubility.
Some suspension are available in ready to use form i.e. already distributed through a liquid vehicle with or without stablizen and other additives.
Prepared suspension not requiring reconstitution at the time of dispensing are simply designated as “Oral Suspension”
Pharmacy College, Azamgarh
This PPT dicusses about the Stirred Tank Bioreactor and its features mainly used in Fermentation process.
Useful for students doing their Bachelor's in Life Science
This slide consists of the definition, parts, and functions, and the principle of the rotary evaporator. Besides this, I also added why we using a rotary evaporator and the comparison between a rotary evaporator and a lyophilizer.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
2. Molecular Sieve Overview
• Absolute or anhydrous alcohol generally refers
to purified ethanol, containing no more than one
percent water.
• Alcohol as manufactured in a distillation column
is rectified spirit, It is not possible to obtain
absolute alcohol by simple fractional distillation,
because a mixture containing around 95.6%
alcohol and 4.4% water becomes a constant
boiling mixture (an azeotropic mixture).
3. Molecular Sieve Overview
• Therefore a special process for removal of
water is required for manufacture of
absolute alcohol.
• In order to extract the remaining water
from alcohol it is necessary to use some
dehydrate, which is capable of separating,
water from alcohol.
4. Molecular Sieve Overview
• To remove this final percentage of water
we use a Molecular Sieve system.
• The final process is the dehydration of
the alcohol to less than 1% water.
• This process is a stand-alone system,
able to startup and stop with minor
effects on the rest of the system.
5. Molecular Sieve Overview
• Using adsorbent
desiccant which
consists of small
granular substances
(beads) that are
manufactured from
clay like materials
such as potassium
aluminosilicates, to
remove the
remaining water from
the 190 proof alcohol
to produce 200 proof
ethyl alcohol.
(Audio pronunciation
for ”aluminosilicate”
hear it
6. Molecular Sieve Desiccant (Beads)
• An Angstrom is a unit of measure for
length. It is sometimes used expressing
the size of atoms, and lengths of chemical
bonds.
• Sieve beads are manufactured to a very
precise pore size such as 3 Angstrom.
• Water molecules have a diameter of 2.5
Angstrom ethanol has a diameter of 4
Angstrom.
7. Molecular Sieve Desiccant (Beads)
• Molecules small enough to pass through such as
water are adsorbed while larger molecules like
alcohol are not adsorbed and pass around the
bead.
• It is different from a common filter in that it
operates on a molecular level. For instance, a
water molecule is small enough to pass through
while larger alcohol molecules are not. Because
of this, they function as a desiccant.
• Molecular sieve can adsorb water up to 22% of
its own weight in water.
8. Molecular Sieve Desiccant
Regeneration Overview
• The adsorbent desiccant contained in the molecular
sieve beds must be regenerated, thus removing the
water that it has collected from the 190 proof vapor while
that bed was online.
• During the regeneration process, the bed is operated
under a vacuum, which favors the de-adsorption
(release) of water from the beads back into the vapor
phase. The vapor leaving the regenerating bed is
approximately 145 proof ethanol. A stream of 200 proof
vapor from the “online” sieve bed is used to pass through
(sweep) in a backward direction the bed that’s being
regenerated in order to flush out any remaining water in
the bed
9. 190 Proof Sieve Vaporizer
• The 190 proof vaporizer, uses direct 135# steam
from the boiler to boil the 190 proof back to
vapor form.
• The 190 proof enters the bottom of the tube side
of the exchanger and is heated by the steam on
the shell side.
• The 190 proof is vaporized and superheated to a
temperature of 300 degrees F at 30 to 35 psi.
and flows to the sieve bottles. As the steam is
condensed, it flows through a stream trap and
travels to the Distillation Condensate Tank.
10. Molecular Sieves
• The Sieve feed pump (P-702) is used to
pump 190 ethanol from the 190 surge tank
through the 702 filter pot and into the
sieve vaporizer.
• The 702 filter pot uses a 10 micron bag filter to
remove any solids before they can be feed into
the sieve beds.
• There are two molecular sieve “Beds” (vessels
containing desiccant).
11. Molecular Sieves
The sieves can be ran is several different modes:
– Auto time – This means that all the sequences will
use timers to control the system.
– Auto event – This means that all the sequences will
use some timers and some pressure differentials to
switch the sequence.
– Manual step mode – This means you can step the
sieve sequence to check valves etc.
25. Molecular Sieves
• As the hot 190 proof vapor from the vaporizer
goes to the bed on line the bed that is in regen
mode has hot 200 proof vapor brought through it
to remove all the water.
• Then the two beds switch and the other bed is
online while the other is in regen.
• The product from the bed that is online then
goes to the 1501 or 1502 heat exchangers.
26. Molecular Sieves
• These Sieve vapor/beer heat exchangers
are used to both cool the 200 proof vapor
and also to pre-heat the beer before it
goes to the Binary column.
• After the cross flow heat exchanger, the
200 product flows into the 200 product
surge tank.
• From the 200 product surge tank the
product is pumped through the 751 filter
pot by the 751 pump (P-751).
27. Molecular Sieves
• This 751 filter is used to filter out any solids that
might be in the product, such as sieve bead dust
from the sieve beads decomposing.
• The final stage is further cooling of the 200 proof
alcohol, after the filter pot, the flow goes through
the 200 product final cooler which is a water
cooled plate and frame heat exchanger.
• The final product is a minimum of 99% ethanol
and is sent to one of two shift tanks.
28. Molecular Sieves
• Once in Shift Tanks a sample is pulled and
tested in the quality assurance lab to insure that
our specifications are meet.
• Shift tanks are tested for the purity of the
alcohol.
• Our 200 proof alcohol has maximum moisture
content of .99%.
• The next test is to determine the level of acidity,
our maximum allowable amount is 70 parts per
million (PPM).
29. Molecular Sieves
• When the shift tank results are in and have met
specifications the shift tank can be sent to
storage.
• Part of the process of transferring the product to
storage is rendering it unfit for consumption.
• This is achieved by adding, “denaturant” such as
unleaded gasoline.
30. Regeneration
• The adsorbent desiccant contained in the
molecular sieve beds must be regenerated, thus
removing the water that it has collected from the
190 proof vapor.
• During the regeneration process, the water
adsorbed into the bed from the 190 proof vapor
stream is removed.
• A slipstream of 200 proof vapor from the “online”
sieve bed is used to pass back through, in a
backward direction, the bed that’s being
regenerated.
31. Regeneration
• During the regeneration process, the bed
is operated under a vacuum, which favors
the de-adsorbtion of water from the bed
back into the vapor phase.
• The vapor leaving the regeneration bed is
approximately 145 proof ethanol.
32. Regeneration
• The 145 proof ethanol vapor stream is
condensed in the regeneration condenser and
then collected in the regeneration tank where it
is pumped through the regen scroll heat
exchanger and back into the regen tank.
• To control the level in the regen tank a portion of
the liquid is removed and sent to the rectifier
feed tank.
33. Mole Sieve Vacuum System
• Regenerating the Mole Sieve under vacuum
favors the desorbtion of water from the
desiccant.
• The vacuum for the regen system is pulled on
the regen tank by a liquid ring vacuum pump.
• The liquid for the ring is supplied from regen
pump.
• The liquid used for the vacuum pump is then
sent to Rectifier Feed tank.
• The vacuum on the system is around 2 PSIA.
34. Storage and Denaturant Addition
• The final step in this process is transferring the
final product to the main storage tanks.
• As stated before, this 200 proof ethyl alcohol
must be rendered unfit for human consumption
before it can be loaded for shipment.
• The amount of gallons transferred from a Shift
tank to storage is measured via the totalizer on
the shift tank to storage flow meter.
• The control room operator will calculate the
amount of gallons of Denaturant that is to be
pumped into the storage tank.
35. Storage and Denaturant Addition
• In the field an operator will open the denaturant
to storage valve and pump the calculated
amount of Denaturant into the storage.
• The denaturant being pumped is measured via
the denaturant flow meter.
• The unleaded gasoline (Denaturant) is added at
a rate of 4.5 to 5 gallons per every 100 gallons
of alcohol, or 4.5% to 5%.
• The final proof of the ethanol in the main storage
tanks is 201 to 203 proof. The higher proof is
due to the difference in density between the
ethanol and denaturant.