process gas Articles
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Advances in gas control technology in the brewery
The use of nitrogen as a process gas, foam enhancer and flavour modifier has come to the fore over the last 10 years, with dissolved gas specifications becoming more stringent. Increasingly, marketing and consumer requirements for a targeted product identity or image have to be met, not only for taste but, perhaps equally as importantly for the consumer, presentation. This has resulted in ...
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Process gas mass flow controllers - An overview
A mass How controller (MFC) is used 10 control the How of gases in a wide range of microelectronic processes. A well-designed MFC maintains a constant tlow within I percent of the full-scale flow, has a repeatability of 0.2 percent of full scale, and has a response time of 1 second to reach within 2 percent of the desired (command) flow, all of this is in response to any changes in command flow. ...
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The Seven Deadly Sins of Process Analyzer Applications
Abstract On-line process gas analyzers comprise a relatively small proportion of the capital investment in a grass roots project but they require detailed attention if they are to be successfully implemented and fully exploited. The chain is long and the mistakes are many. It runs from front end engineering design, to EPC detailed design, through systems integration, selection of technique and ...
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Project Mercaptan Oxidization (Merox process gas) - Case Study
Project Overview: SNC-Lavalin/Plains Midstream selected Questor Technology Inc. to provide thermal oxidization process control for use in their Fort Saskatchewan facility in Alberta, Canada. Location: Fort Saskatchewan, Alberta, Canada Equipment: Q250 Thermal Oxidizer Application: Mercaptan oxidization (Merox) process gas Mandate: Combustion of Merox process waste gas stream with no visible ...
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Self-Supplier With a Small Footprint
New Technologies in Nitrogen Production On site self production is an environmentally friendly and at the same time inexpensive way of supplying nitrogen. With new hydrogen and heat recovery technologies, the balance can be improved even further. In the chemical and oil and gas industries, nitrogen (N2) is used as an inert and process gas to avoid fires and explosions as well as undesirable ...
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The Basics of Process Gas Analysis in Chemical Vapor Deposition
Chemical vapor deposition (CVD) processes rely on process gases for the transport of volatile precursors and byproducts. Performing process gas analysis on exhaust streams in CVD applications provides insight into the chemical reactions that occur at the surface of the substrate, enabling CVD processes to be monitored and optimized. In this article, we’re looking at the fundamentals of CVD ...
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New Process Gas Analyzer for the Measurement of Water Vapor
KEYWORDS TDLAS, WMS, Laser Spectroscopy, Water Vapor Measurement, Gas Analyzer ABSTRACT A new analyzer for the measurement of water vapor concentration based on Tunable Diode Laser Absorption Spectroscopy (TDLAS) was developed. The water-vapor line at 1854-nm was selected for the measurement, and the performance of the system was evaluated on different background eases to confirm that the ...
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Selecting VOC Oxidizer
Nacah Tech's President, Bob Keibler presents How to select the proper type of thermal oxidizer or process gas treatment method. The paper presents details on what parameters of a process gas to be treated determine which treatment method / oxidizer provides the best efficiency, plant flexibility, heat recovery method, etc. while maintaining the target emission rates. Begining with the basic 3T's ...
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Elevated Pressure Refinery Desulfurization
MOL Hungarian Oil & Gas Co. selected a LO-CAT® II Desulfurization System for operation at its production unit in Szeged, Hungary. The unit was custom-designed for direct treatment of sour associated and process gas streams at elevated operating pressures and relatively high CO2 partial pressures. Recycled process gas and associated gases are collected from the oil fields around the plant ...
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Nitrosave, nitrogen oxygen control video
Would you like to control or optimise your nitrogen use? Watch this informative 2 min video to find out how the Nitrosave, nitrogen oxygen control system can solve the issue of waste in nitrogen purged applications. Saving up to 50% of your nitrogen running costs. Applications include: Curing ovens/vessels and furnaces Flow soldering Glove boxes Food packaging lines Nitrogen purge ...
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POLYETHYLENE SOLUTIONS - EXPERT PAPER
Polyethylenes are thermoplastic resins obtained by polymerizing the gas ethylene [C2H4]. Because of its exceptional application flexibility, polyethylene’s rise in popularity for both consumer and industrial uses means that today it is the largest volume plastic in the world. Low density polyethylenes (LDPE) are polymerized at very high pressures and temperatures, and the high density types ...
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IRGAS XFlo: process gas FTIR system for flange mounted applications
Introduction When doing process tool or exhaust abatement tool installations, it is desirable to monitor the exhaust gases as a means of controlling or setting up the tool 1, 2. FTIR, with its rapid analysis speed, high sensitivity, and ease of use, offers one means of monitoring such systems at the time of installation and during the working life of the tool. Often, these applications contain ...
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FPI Solution: Coal Injection Process and Detection of Its Process Gas
Application Area: Iron & Steel Industry Process: Coal Injection Measuring Components: O2, COApplication Scenario: Pulverized Coal Injection is the key to optimizing the blast furnace process for high productivity as well as hot metal cost. In this process, the raw coal is fed into the pulverizer along with heated air. As the coal gets crushed, the hot air dries it and blows the usable fine ...
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FPI Solution: Steel Making Process and Detection of Its Process Gas
Application Area: Iron & Steel Industry Process: Steel Making Measuring Components:O2, CO Application Scenario: Steel making process involves converting liquid iron into steel via a basic oxygen furnace (BOF, also known as a converter) or melting scrap steel and/or direct reduced iron (DRI) in an electric arc furnace (EAF). Recovery of BOF gas is the single most energy-saving improvement in ...
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Rotary-Valve Fast-Cycle Pressure-Swing Adsorption Paper
Off-shore production/processing platforms often strand valuable associated and/or natural gas reserves due to severe space and weight/or limitations on the platform prohibiting the installation of gas processing and/or treatment facilities. This paper will describe how one such oil producer, located in the Santa Barbara Channel, met the aforementioned challenges by first demonstrating the ...
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A hybrid computing scheme for forward and reverse mappings of metal inert gas welding process
A hybrid computing scheme has been developed for carrying out forward and reverse mappings of metal inert gas welding process. As the input-output relationships of this process may not be the same over the entire range of the variables, the mappings have been done using the clusters made by the data points. Optimisation has been carried out to improve the performances of both fuzzy clustering ...
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Pro-Bio Hysens –EU- Project - Case Study
Process gas analysis for bio and hydrogen gas mixtures using new high pressure in Situ sensors. The goal of the project is the development and combination of sensors for measuring optical, thermo physical and electro magnetic properties, to achieve an in Situ high pressure concentration measuring in bio and hydrogen gas ...
By Gasera Ltd
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CFD Analysis of Gas Cooling
In many industrial processes, hot gas is cooled down due to the evaporation (boiling) of sprayed droplets. The effects of two different atomizer types, inner mixing air atomizing nozzles and flow back nozzles, on the cooling behavior inside a spray tower for a typical flue gas are discussed. The heat and mass transfer is computed using computational fluid dynamics (CFD). The interaction between ...
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Leading steel manufacturer cuts maintenance time with iNet exchange
A world-leading steel and mining company’s plant in Saint-Chély-d’Apcher, France, specializes in producing electrical steel for use in automotive engines. The plant is one of the company’s 40 production sites and employs 200 workers who encounter toxic and flammable gas hazards. The company’s manual maintenance and repair process for gas detectors was complicated ...
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Real-time correction of antecedent precipitation for the Xinanjiang model using the genetic algorithm
The Xinanjiang model has been successfully and widely applied in humid and semi-humid regions of China for rainfall–runoff simulation and flood forecasting. However, its forecasting precision is seriously affected by antecedent precipitation (Pa). Commonly applied methods relying on the experience of individual modelers are not standardized and difficult to transfer. In particular, the ...
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