Secondary tar cleaning systems and technologiesAyisha586983
Physical separation process will continue to play a very important role for the successful commercial implementation of gasification.
Tar present in producer gas is removed mainly through wet or dry scrubbing, as it could be easily designed and applied depending on the specific need of any gasification process.
Even though in bed tar cracking is feasible in some cases removal of dust particles becomes necessary along with gas cooling
24. PRODUCER GAS CLEANING METHODS.pptxRENERGISTICS
Producer gas should be cleaned from particulate and tar components using a series of gas cleaning system, such as scrubber, elutriator, and heat exchanger. The scrubber is functioning to take the particulate matters and heavy tars (primary tars) which may condense at temperature more than 200 °C out from producer gas.
Secondary tar cleaning systems and technologiesAyisha586983
Physical separation process will continue to play a very important role for the successful commercial implementation of gasification.
Tar present in producer gas is removed mainly through wet or dry scrubbing, as it could be easily designed and applied depending on the specific need of any gasification process.
Even though in bed tar cracking is feasible in some cases removal of dust particles becomes necessary along with gas cooling
24. PRODUCER GAS CLEANING METHODS.pptxRENERGISTICS
Producer gas should be cleaned from particulate and tar components using a series of gas cleaning system, such as scrubber, elutriator, and heat exchanger. The scrubber is functioning to take the particulate matters and heavy tars (primary tars) which may condense at temperature more than 200 °C out from producer gas.
spray drying is technology widely used in milk powder and coffee powder manufacturing industry because of its working principle and technology involved..
the spray drying process involves the atomization of a solution ,slurry or emulsion containing one or more components of the desired product in to droplets by spraying followed by the rapid evaporation of the sprayed droplets in to solid powder by hot air at a certain temp and pressure.
- Raw Material Handling Plant
- Dust Generation & Necessity of Control
- Types of Dust Control System
- Dust Collection System
- Air Cleaning Devices
- Bag House Dust Collector
Standard particulate matter
particle pollution
air pollution and control
particulate matter
Monitoring of Particulate matter
Monitoring of air pollutants
Gas cleaning system - Types of ScrubbersAyisha586983
Gas cleaning systems, including scrubbers, are essential components in industrial processes for removing particulate matter, gases, and pollutants from gas streams before they are discharged into the environment. Scrubbers are devices that use a liquid (usually water or another solvent) to capture and remove contaminants from the gas stream through absorption or chemical reactions. There are several types of scrubbers used in gas cleaning systems.
- Raw material handling plant
- Dust generation
- Necessity of dust control
- Types of Dust Control system
- Wet Dust Suppression
- Dry fog Dust Suppression
- Types of Nozzle & Spray pattern
- Nozzle Maintenance & Performance Testing
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: Distillation
Subject: 0.2 Introduction to distillation.
spray drying is technology widely used in milk powder and coffee powder manufacturing industry because of its working principle and technology involved..
the spray drying process involves the atomization of a solution ,slurry or emulsion containing one or more components of the desired product in to droplets by spraying followed by the rapid evaporation of the sprayed droplets in to solid powder by hot air at a certain temp and pressure.
- Raw Material Handling Plant
- Dust Generation & Necessity of Control
- Types of Dust Control System
- Dust Collection System
- Air Cleaning Devices
- Bag House Dust Collector
Standard particulate matter
particle pollution
air pollution and control
particulate matter
Monitoring of Particulate matter
Monitoring of air pollutants
Gas cleaning system - Types of ScrubbersAyisha586983
Gas cleaning systems, including scrubbers, are essential components in industrial processes for removing particulate matter, gases, and pollutants from gas streams before they are discharged into the environment. Scrubbers are devices that use a liquid (usually water or another solvent) to capture and remove contaminants from the gas stream through absorption or chemical reactions. There are several types of scrubbers used in gas cleaning systems.
- Raw material handling plant
- Dust generation
- Necessity of dust control
- Types of Dust Control system
- Wet Dust Suppression
- Dry fog Dust Suppression
- Types of Nozzle & Spray pattern
- Nozzle Maintenance & Performance Testing
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: Distillation
Subject: 0.2 Introduction to distillation.
Book Formatting: Quality Control Checks for DesignersConfidence Ago
This presentation was made to help designers who work in publishing houses or format books for printing ensure quality.
Quality control is vital to every industry. This is why every department in a company need create a method they use in ensuring quality. This, perhaps, will not only improve the quality of products and bring errors to the barest minimum, but take it to a near perfect finish.
It is beyond a moot point that a good book will somewhat be judged by its cover, but the content of the book remains king. No matter how beautiful the cover, if the quality of writing or presentation is off, that will be a reason for readers not to come back to the book or recommend it.
So, this presentation points designers to some important things that may be missed by an editor that they could eventually discover and call the attention of the editor.
Between Filth and Fortune- Urban Cattle Foraging Realities by Devi S Nair, An...Mansi Shah
This study examines cattle rearing in urban and rural settings, focusing on milk production and consumption. By exploring a case in Ahmedabad, it highlights the challenges and processes in dairy farming across different environments, emphasising the need for sustainable practices and the essential role of milk in daily consumption.
Top 5 Indian Style Modular Kitchen DesignsFinzo Kitchens
Get the perfect modular kitchen in Gurgaon at Finzo! We offer high-quality, custom-designed kitchens at the best prices. Wardrobes and home & office furniture are also available. Free consultation! Best Quality Luxury Modular kitchen in Gurgaon available at best price. All types of Modular Kitchens are available U Shaped Modular kitchens, L Shaped Modular Kitchen, G Shaped Modular Kitchens, Inline Modular Kitchens and Italian Modular Kitchen.
Expert Accessory Dwelling Unit (ADU) Drafting ServicesResDraft
Whether you’re looking to create a guest house, a rental unit, or a private retreat, our experienced team will design a space that complements your existing home and maximizes your investment. We provide personalized, comprehensive expert accessory dwelling unit (ADU)drafting solutions tailored to your needs, ensuring a seamless process from concept to completion.
Expert Accessory Dwelling Unit (ADU) Drafting Services
equipment.pptx
1. Settling chamber or gravity settler.
• It is also known as gravity settling chamber, gravity collector,
expansion chamber and outfall chamber.
• It is generally used in removing larger size partial.
• It is generally build in the form of long, horizontal, rectangular
chamber with an inlet at one end and outlet at other end.
• Flow through the chamber is uniform.
• Hopper are used to collect the settled out materials, through
drag scrapper.
• The dust removal system must be sealed to prevent air leaking
into the chember.
2. Cont…
• There are two types of settling chember.
(a)The expansion chamber.
(b)The multiple-trey chamber.
• In the expansion chamber, the velocity of gas stream is reduced
as the gas expand in large chamber and this reduced velocity
allows larger particle to settled out of gas stream.
• In multiple trey chember, a number of thin treys are closely
spaced within the chember which allows the gas to flow
horizontally between them.
• Gas velocity increased as compared to expansion chember, so it
is used for collection of smaller particle( less than 15µ)
3.
4. Advantages
• Low capital cost
• Very low energy cost
• No moving part
• Few maintenance requirement
• Low operating cost
• Excellent reliability
• Low pressure drop through device
• Dry collection and disposal.
5. Disadvantages
• Relatively low particulate matter collection efficiencies.
• Unable to handle sticky materials.
• Large physical size.
• Treys in multiple trey settling chamber may warp.
6. Electrostatic precipitator
• ESP is a large, industrial emission control unit that utilized
electrical energy directly to removed particulate matter.
• It is designed to trap and remove dust from all kinds of gases
with very high efficiency.
• It is generally used in power or electric industry, cement,
chemical, metal and paper.
• It collects most of the dust and clean gas released to atmosphere
through stack.
• Precipitator collect 99.9% or more dust from gas stream.
7. Principle:
ESP removes particles from the exhaust gas stream.
There are six activities that takes place:
• Ionization- Charging of particles.
• Migration-Transporting the charged particles to the collecting
surfaces.
• Collection- Precipitation of the charged particles into the
collecting surfaces.
• Charge dissipation- Neutralizing the charged particles on the
collecting surfaces.
• Particle dislodging-Removing the particles from the collecting
surface to the hopper.
• Particle removal-Conveying the particles from the hopper to a
disposal point or return to the process.
8.
9. Working:
• As air enter the ESP, the particle pass through an electrical
field that gives charge to the particle.
• The charge particles pass through a series of alternately charge
collector plate.
• Particles are repelled by plates with the same polarity and
attracted to plate with opposite polarity.
• Dual stage ESP ,includes two parts:
charging and collecting sections.
• In charging section, the incoming smoke, mist and particulates
pass by ionizer wires which imparts positive charge on these.
• It is then transfer to collector section which contains secondary
electric field with negative charge aluminum plate.
• It get attract and removing from air stream.
10.
11.
12. Advantages
• High collection efficiency.
• Particle as small as 0.1μm can be removed.
• Low maintenance and operating cost.
• Cleaning is easy by removing different parts of unit.
13. Disadvantages
• High initial cost.
• Space required is more because of large size of equipment.
• The poisonous gas like ozone is produced during ionization.
14. Bag filter
• It is the most common type of fabric collector consist of tabular
bags.
• A bag house filter consist of numerous bags 120-140mm dai and
2-10m long.
• They are suspended with open ends attached to a manifold and
the hopper at bottom for collection of the dust.
• The gas entering through the inlet pipe strikes a baffle plate,
which causes larger particle to fall into hopper due to gravity.
• The carrier gas flows upward through fabric bag leaving
particulate matter as a cake inside the bags.
• Initially efficiency is low but after the formation of cake it get
increased about 99%.
15. • The cake usually formed in a minute or sometimes even
seconds.
• The accumulation of dust increases the air resistance of the filter
and therefore filter bags have to be periodically cleaned.
• It can be cleaned by rapping, shaking or vibration or reverse air
flow, causing the filter cake to be loosened and fall into the
hopper.
16.
17. Advantages
• High collection efficiency for all particle size specially particle
smaller than 10µ.
• Simple construction and operation.
• Collection and disposal of particulate in dry form.
• Nominal power consumption.
• Low pressure drop.
18. Disadvantages
• Large size of equipment.
• High temperature in between 250-3000c.
• High maintenance and operation cost.
19. Cyclone
• It is defined as a structure without moving parts in which
velocity of an inlet gas stream is transported into vortex from
which centrifugal force drive suspended particle on the wall of
cyclone body.
• It consist of vertically placed cylinder with inverted cone
attached to the base.
• The particulate gas stream enter through inlet. The outlet pipe
for purified gas is at the top and dust particulates are collected at
bottom of storage hopper.
20. Working:
• The gas path generally follows a double-vortex.
• At the starting the gas spirals downwards at the outer periphery
of cylindrical portion continues through conical portion and
reaches the bottom.
• The gas stream then moves upward in narrow inner spiral and
leaves through the outlet pipe.
• Due to rapid spiral movement of gas, the dispersion are
projected towards the wall by centrifugal force and drop by
gravity to the bottom and collected in hopper.
• It is used for collection of wide range of size and concentration.
21. Application:
• It is used for control of gas borne particulate in industrial
operation as cement manufacture, paper industry.
• Cyclone are also used to separate dust in disintegration, such as
rock crushing, sand conditioning in industries.
• It is also used in recovery of catalyst dust in petroleum industry
and reduction in fly ash emission.
22.
23. Advantages
• Low initial cost
• Simple construction and operation
• Low pressure drop
• Low maintenance requirement
• It has no moving parts.
• They can be constructed of any material which will meet the
temperature.
24. Disadvantages
• Low collection efficiency for particles below 5-10μ in
diameter.
• Equipment is subjected to serve abrasive deterioration.
• Decreasing collection efficiencies for decreasing concentration
in the gas stream.