This PPT contains a description and the principles of operation of a Rexarc ATX Acetylene Generator and describes the components for this generator model.
Water Inlet Pressure Switch
Water Pressure Gauge
Residue/Lime Water Agitator
Motor Control Center
Automatic Lubrication Panel
Water Level Valves
Residue/Lime Water Drain Valve & Control
Flashback Arresters
Safety Valves
Plant Alarms
Water Inlet Pressure Switch
Water Pressure Gauge
Residue/Lime Water Agitator
Motor Control Center
Automatic Lubrication Panel
Water Level Valves
Residue/Lime Water Drain Valve & Control
Flashback Arresters
Safety Valves
Plant Alarms
Valves are the components in a fluid flow or pressure system that regulate
either the flow or the pressure of the fluid. This duty may involve stopping
and starting flow, controlling flow rate, diverting flow, preventing back
flow, controlling pressure, or relieving pressure.
Most companies spend a lot of money training their maintenance personnel to troubleshoot a hydraulic system. If we focused on preventing system failure then we could spend less time and money on troubleshooting a hydraulic system.
If you are experiencing hydraulic problems then this article is a must to read because it is based on "known best practices"? Think about it.
Most companies spend a lot of money training their maintenance personnel to troubleshoot a hydraulic system.
If we focused on preventing system failure then we could spend less time and money on troubleshooting a hydraulic system. We normally except hydraulic system failure rather than deciding not to except hydraulic failure as the norm. Let’s spend the time and money to eliminate hydraulic failure rather than preparing for failure.
Hydraulic Filters are used to keep the contaminants away from the system and avoid mechanical failures. Fleetguard products cater to high, low and medium pressure hydraulic systems to protect industrial machinery and equipments.
For more details visit: https://www.fleetguard-filtrum.com/products/hydraulic-filtration/
Valves are the components in a fluid flow or pressure system that regulate
either the flow or the pressure of the fluid. This duty may involve stopping
and starting flow, controlling flow rate, diverting flow, preventing back
flow, controlling pressure, or relieving pressure.
Most companies spend a lot of money training their maintenance personnel to troubleshoot a hydraulic system. If we focused on preventing system failure then we could spend less time and money on troubleshooting a hydraulic system.
If you are experiencing hydraulic problems then this article is a must to read because it is based on "known best practices"? Think about it.
Most companies spend a lot of money training their maintenance personnel to troubleshoot a hydraulic system.
If we focused on preventing system failure then we could spend less time and money on troubleshooting a hydraulic system. We normally except hydraulic system failure rather than deciding not to except hydraulic failure as the norm. Let’s spend the time and money to eliminate hydraulic failure rather than preparing for failure.
Hydraulic Filters are used to keep the contaminants away from the system and avoid mechanical failures. Fleetguard products cater to high, low and medium pressure hydraulic systems to protect industrial machinery and equipments.
For more details visit: https://www.fleetguard-filtrum.com/products/hydraulic-filtration/
The presentation is for the simulator for the operation of Thermal Power Plant from starting. It describes the Electrical Charging and Water Cycle Establishment. The simultaneous operations on Turbine sides are also described for the First Part.
With the development of technologies such as VVT (Variable Valve Timing) and VVL (Variable Valve lift) controlled by ECU resulted in the development of modern ivtec, multiair and other advance engines which not only improved performance but also were energy efficient with less NOx emissions.
Various Mechanical Units Involved in The Bottling Of LPG cylindersMohit Dhull
LPG BOTTLING PLANTS
MECHANICAL UNITS INVOLVED IN THE PROCESS OF FILLING OF LPG CYLINDERS
REFERENCES USED
LPG DETAILS ,RECOVERY,PRODUCTION
FIRE SAFETY SYSTEMS
Similar to Rexarc Acetylene Generators - Part I (20)
Rexarc Manifolds Training Agenda - Industrial Gas Distribution
Mode change in gas delivery
Advantages of manifolds
Types and sizes of manifolds
Portable distribution centers
Station Drops
Applications
The Rexarc 925 Acetylene Cylinder Filling Plant is designed for maximum carbide yield and high efficiency. The Rexarc acetylene plant is constructed and inspected with a best practice policy that meets the intent of design principles and manufacturing practices from Section VIII of the ASME codes.
Regenerative high pressure driers is a system to dry acetylene gas coming from the compressors and prior to the cylinders which minimizes cost and increase operational effectiveness over current methods.
Generating a custom Ruby SDK for your web service or Rails API using Smithyg2nightmarescribd
Have you ever wanted a Ruby client API to communicate with your web service? Smithy is a protocol-agnostic language for defining services and SDKs. Smithy Ruby is an implementation of Smithy that generates a Ruby SDK using a Smithy model. In this talk, we will explore Smithy and Smithy Ruby to learn how to generate custom feature-rich SDKs that can communicate with any web service, such as a Rails JSON API.
Elevating Tactical DDD Patterns Through Object CalisthenicsDorra BARTAGUIZ
After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more ‘mechanical’ approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
FIDO Alliance Osaka Seminar: The WebAuthn API and Discoverable Credentials.pdf
Rexarc Acetylene Generators - Part I
1. Since 1924, Rexarc has been recognized as the leader in high quality,
and high value industrial gas distribution systems ...There is no substitute!
Acetylene Generators – Part I
2. INTERNATIONAL, INC.
Table of Contents
• Calcium Carbide Skip (Transfer Cart)
• Calcium Carbide Hopper
• Hopper Gauge
• Vent Valves
• Equalizing Valve
• Control Switches
• Screw Feed
• Carbide Valve and Hydraulic System
• Pressure Transducers
• Temperature Safety Instrument
• Inlet Water Control Instrument
• Optional Low/Low and High/High Water Level
Alarms
• Inlet Water Control Valve
• Water Level Alarm
• Water Inlet Pressure Switch
• Water Pressure Gauge
• Residue/Lime Water Agitator
• Motor Control Center
• Automatic Lubrication Panel
• Water Level Valves
• Residue/Lime Water Drain Valve &
Control
• Flashback Arresters
• Safety Valves
• Plant Alarms
1. Purpose and Scope
2. Principles of Operation
3. Rexarc Acetylene Generator Components
3. INTERNATIONAL, INC.
Purpose and Scope
Purpose: This chapter contains a description and the principles of operation of a Rexarc ATX
Acetylene Generator and describes the components for this generator model.
Scope: This chapter applies to sites around the world.
Rexarc Acetylene Generator Components
Description: Components like these are typically found on a Rexarc acetylene generating plant. Not
all components will be found on all plants, as some are optional (depending on the grade of acetylene
produced).
4. INTERNATIONAL, INC.
Principles of Operation
Introduction: The Rexarc generator is a common type of medium pressure generator used. They
come in various sizes and can be either manually or automatically controlled, however the principles
of operation are the same.
5. INTERNATIONAL, INC.
Generator
The generator provides for the controlled reaction of carbide with water using either a single hopper
mounted at one end (smaller generators) or two hoppers mounted at either end of the generator
(larger generators) that are used alternatively. The two hoppers allow continuous acetylene
production, without shutting down to recharge the hoppers.
When the pressure inside the generator drops, a carbide screw feed conveys carbide to the
generator tank from the hoppers. The generator is designed for carbide sized between 1-2 inches
(25-50 mm) and a dust component of less than 15%.
As the calcium carbide reacts with the water in the generator, heat, lime and acetylene gas is
produced. The gas produced causes the pressure in the generator to rise and the screw feed to stop
at a preset pressure closing the carbide feed valve and stopping the flow of calcium carbide into the
generator.
Acetylene gas is drawn off the generator by the compressor causing the pressure to
drop and a low pressure setting on the transducer starts the screw feed, feeding more
calcium carbide into the generator causing the gas pressure to rise.
6. INTERNATIONAL, INC.
Generator Controls
If the generator is automatically controlled, water is added to the generator through spray nozzles to
control the heat generated during the reaction, maintaining a set operating temperature.
Note:
1. Smaller capacity generators have no automatically controlled water injection system. Water must
be drained from this type of generator and refilled each time a new charge is required.
When the rising water reaches a certain level a diaphragm control valve automatically opens the
drain valve and drains off lime slurry, closing when the level returns to normal.
2. If the water level rises above the high water level inside the generator, an alarm will sound and no
further water can be added until the level has been returned to normal.
A low water alarm is also activated if the lime slurry falls below a set level in the generator.
7. INTERNATIONAL, INC.
Calcium Carbide Skip (Transfer Cart)
Description: A skip/transfer cart is used to transport calcium carbide from the drum opening area or
the carbide container staging stand to the generator hopper. This cart is matched to the size of the
hopper capacity of the generator.
CAUTION: When calcium carbide vessels are emptied into a skip/transfer cart in preparation for
generator recharging care must be taken to ensure that:
• Calcium carbide is not loaded into the skip/cart until required to limit exposure to atmospheric
moisture.
• Calcium carbide can be covered and purged if necessary in the event of hoist failure or emergency
generator shut-down.
• Loading should not proceed without grounding the skip/cart and the carbide container on the
staging stand.
8. INTERNATIONAL, INC.
Calcium Carbide Hopper
Description: Calcium carbide is held in the hopper(s) ready to be fed into the generator body.
Generators can either have one hopper, which means the production of acetylene gas must be halted
when it is empty and requires recharging, or have two hoppers, one mounted at either end of the
generator tank. These are used alternatively to provide continuous acetylene production.
The hoppers come standard with a relief valve to keep from being over pressurized.
The hoppers are available in 300 pounds (136kg), 600 pounds (272kg), 1200 pounds (544kg), 2500
pounds (1134kg) and 5000 pounds (2267kg).
9. INTERNATIONAL, INC.
Hopper Gauge
Description: A hopper gauge shows the acetylene pressure in the hopper (during recharging this will
be slightly lower than the generator tank pressure). During normal operation the hopper pressure and
generator pressure should be equal.
This gauge is used to indicate pressure when recharging the hopper, to indicate when pressure is
vented to atmosphere and when equalizing the hopper and generator tank pressure after recharging.
10. INTERNATIONAL, INC.
Vent Valves
Description: These are used to manually vent the carbide hopper of:
• Acetylene before charging
• Nitrogen that has been used to purge the hopper before the hopper lid is removed
• Nitrogen and air after the hopper has been purged after charging
Equalizing Valve
Description: This valve is used for equalizing pressure in the hoppers after carbide charging. It is
closed during normal operation and open only during the pressure equalizing process.
11. INTERNATIONAL, INC.
Control Switches
Description: If there are two hoppers installed, switches are mounted near the generator tank to
control the operation of the hoppers.
When the operating hopper runs out of carbide, the tank pressure drops to a predetermined pressure
and actuates the low-pressure mercoid switch 5-6 PSI (35-42 kPa) to automatically start the second
hopper.
The empty hopper is then turned off and recharged.
When the operator pushes the high mercoid button the operating pressure is raised from the 5-6 PSI
(35-42 kPa) range to the 7-8 PSI (50-64 kPa) operating range.
12. INTERNATIONAL, INC.
Screw Feed
Description: A screw feed pushes calcium carbide towards the carbide valve from the hopper. It is
electrically driven and is controlled by mercoid switches which start it when the generator pressure
falls below a set pressure and stops it when the pressure rises to a preset level.
Carbide Valve and Hydraulic System
Description: The carbide valve has a soft rubber seat that is held against the screw feed opening by a
spring.
When the screw feed starts, a hydraulic gear pump builds pressure in the hydraulic cylinder, which is
connected to the carbide valve.
The hydraulic cylinder overcomes the pressure of the spring and opens the carbide valve allowing
carbide to enter the generator tank.
When the screw feed stops hydraulic pressure is lost and the spring closes the carbide valve.
A gauge is fitted to the hydraulic system, which registers the hydraulic pressure, and a safety valve
protects the cylinder from over pressure.
13. INTERNATIONAL, INC.
Pressure Transducers
Description: These are external switches fitted to the
generator. The high pressure switch is set at 7-8 psig (50-64
kPa) and the low pressure mercoid switch are set at 5-6 psig
(35-42 kPa). The set pressure is done on a screen on the motor
control center
They are used to operate the screw feed and change over from
empty to full hoppers.
The screen has been designed so that multiple 4-20ma
pressure transducer ranges can be used. All that is needed
is to enter the correct range of the transducer.
14. INTERNATIONAL, INC.
Temperature Safety Instrument
Description: This instrument measures the temperature of the
acetylene in the generator tank and closes the alarm circuit when the
temperature reaches a set point. Normally it is set 10°F (5. 6°C)
above the inlet water control instrument temperature setting using the
password protected set screen. It must never be set above the
maximum operating temperature of the generator (176°F or 80°C).
Inlet Water Control Instrument
Description: This instrument measures the temperature of the
acetylene in the generator tank and opens the water inlet valve when
the temperature reaches the set point. The temperature setting is
password protected and has both an on and off setting. A high
temperature warning is activated when the generator temperature
reaches 10°F above the water inlet set point. Water is added by
temperature and whenever the carbide feeders are running.
15. INTERNATIONAL, INC.
Optional Low/Low and High/High Water Level Alarms
Description: Separate controls on the opposite end of the generator for the high/high and low/low
alarms. These are in addition to the standard high and low water level alarms.
16. INTERNATIONAL, INC.
Inlet Water Control Valve
Description: This air operated valve opens to allow water to enter the generator through spray
nozzles when the generator tank temperature rises to the set point on the water control instrument (B).
A spring closes the valve when the air supply to it is off.
The water supply has a meter fitted to measure the amount of water supplied to the generator. By
adjusting the water control instrument (B) to either increase or decrease the water supplied to the
generator the correct carbide to water ratio (approximately 8:1 by weight) can be maintained.
17. INTERNATIONAL, INC.
Water Level Alarm
Description: When the water level varies from the normal operating level (higher or lower) a proximity
switch comes on (orange light). This signal to the motor control center causes the generator actuated
ball valve to open and a lowering of the slurry level to happen. The generator must only be operated
when the water is at the correct operational level.
Click here for Rexarc Acetylene Generator – Part II