gas conditioning Articles
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CFD Analysis for NOx-Control in a Refinery
Refineries are required by law to reduce the emission of nitrous oxides (NOX) to the atmosphere. Spray nozzles are key components in the gas conditioning equipment used to control the humidity and temperature of the gases, providing controlled volumes of liquid with predictable drop size and consistent spray coverage. Knowing these values is vital for the optimization of gas conditioning ...
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It’s in the Baghouse
The Lafarge Malogoszcz plant in Poland started up its new fabric filter in May 2005, with a revamped gas conditioning tower for clinker production line 2. The precalciner, kiln and raw mill are dedusted by a Scheuch EMC baghouse, which replaced the existing ESP. Scheuch participated in this project from engineering to start up, and it was completed in only eight months. The daily clinker ...
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Ozone mass transfer behaviors on physical and chemical absorption for hollow fiber membrane contactors
To understand the mass transfer behaviors in hollow fiber membrane contactors, ozone fluxes affected by various conditions and membranes were investigated. For physical absorption, mass transfer rate increased with liquid velocity and the ozone concentration in the gas. Gas flow rate was little affected when the velocity was larger than the critical value, which was 6.1 × 10−3m/s in this ...
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Dynamic CO2 sorption on MgO-based sorbent in the presence of CO and H2O at elevated pressures
MgO-based sorbents have received a great attention as a sorbent for pre-combustion CO2 capture. Still, few studies have been conducted on how the sorption mechanism varies in the presence of gases other than CO2. Here, we report on the dynamic CO2 sorption behavior of MgO-based sorbents under simulated practical conditions, including H2O and CO. The CO2 sorption behavior of the salt-promoted ...
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Continuous measurement of mercury emissions in combustion plants (Overview and new measuring method)
Introduction Continuous measuring devices have been used for continuous recording of Hg emissions in waste incineration plants since the early Nineties. Operators of combustion plants must maintain a 24-hour measured value of 30 μg/m³ mercury and a half-hourly average value of 50 μg/m³ in accordance with the 13th and 17th BImschV. In order to meet these requirements, measuring ...
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Characteristics and kinetics of hexavalent chromium reduction by gallic acid in aqueous solutions
Gallic acid (GA) is a naturally occurring plant polyphenol compound. Experiments were conducted to study the kinetics and effects of pH, temperature, irradiation, and initial hexavalent chromium (Cr(VI)) concentration on Cr(VI) reduction by GA. Results indicated that Cr(VI) could be reduced to chromium oxide (Cr(III)) with GA in a wide range of pH values from 2.0 to 8.5. The reaction followed a ...
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Study of defect behaviour in Ga2O3 nanowires and nano-ribbons under reducing gas annealing conditions: applications to sensing
The growth of monoclinic Ga2O3 nanowires, nano-ribbons and nano-sheets has been investigated. Results indicate that high quality single crystal nanowires can be grown at 900?C using an Au catalyst, while single crystal nano-ribbons and nano-sheets require no metal catalyst for growth. Since bulk Ga2O3 is a promising material for high temperature gas sensing, Ga2O3 nanowires and nano-ribbons may ...
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Mercury - LNG`s problem - Under some conditions mercury can be a major source for concern in LNG processing
Untitled Document Summary: Mercury induced corrosion in LNG plants using mixed refrigerant (Fig.1) can be severe on the cycle gas side of exchangers, primarily during warmup periods. The problem can be avoided by removing mercury from the feed and cycle gas liquid. Also, operating conditions during de-riming can be set to avoid or minimize the time during which ...
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Shree cement plant optimization Beawar Rajasthan - Case Study
GTZ (German Technical Cooperation) has funded a programme by which cutting edge technology shall be deployed to optimize high energy consuming processes. The programme is a joint undertaking together with the bureau of energy efficiency of the government of India. GTZ chose PROMECON as project partner for instrumentation and application support due to the experience and track record for ...
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Exergy analysis of advanced transcritical CO2 air conditioning cycles
The energy and exergy balance methods were performed on two advanced transcritical CO2 air conditioning cycles presented in the literature. In addition to the basic transcritical CO2 air conditioning cycle which has five main components, compressor, gas cooler, evaporator, expansion valve and internal heat exchanger, two advanced cycles are investigated; both have two-stage compressor (low stage ...
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Research on CFD numerical simulation and flow field characteristics of countercurrent–cocurrent dissolved air flotation
Countercurrent–cocurrent dissolved air flotation (CCDAF), the popular water purification device, which consists of collision and adhesion contact zones, showed favorable flotation conditions for micro-bubble adhesion and stability. In this study, computational fluid dynamics (CFD) numerical simulation was employed to confirm that the unique CCDAF configuration create reasonable and that the ...
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You`re never far away from a Peak Field Service Engineer
Here at Peak we see your gas generator as the beating heart of your laboratory, enabling your analytical instruments to perform and achieve the results you need. With this being the case it is extremely important you look after your ‘beating heart’ to ensure the best possible results, and that's where our Field Service Engineers come in. Since your gas generator is vital to your ...
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FAQ Corner – What is the Importance of STP Conditions on Mass Flow
As I go through the day looking at various mass flow applications, I often notice that it is very easy for users to overlook one of the crucial items required for calculating mass flow. Looking at an application with its established requirements, we often jump right to determining “what flow rate is required?” However, it is important to remember that mass flow applications using ...
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Melbourne water’s, Werribee wastewater treatment plant, Victoria, Australia - Case Study
Werribee Wastewater Treatment Plant The GE Jenbacher generator runs on sewage gas (a type of biogas) produced from the sites anaerobic digesters. The generator is connected, via an integrated 415V circuit panel to step-up transformer. High voltage electricity is exported via transformers to provide base load power to Melbourne Water. The plant is designed to supply Melbourne Water with its ...
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Gas Detector Maintenance and Calibration: Keeping Your Equipment in Top Condition
Background: A gas detector is a basic safety device for monitoring potentially harmful gases in the environment. Their maintenance and calibration are essential to ensure accurate and reliable testing, protecting human health and the environment. This article explores the importance of gas detector maintenance and calibration, the factors that affect detection accuracy, and the steps needed to ...
By JXCT
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Stationary gas detector
Summary: Stationary gas detector is an instrument used to detect the type and concentration of gases in the environment. It determines the type and concentration of gases by detecting their response characteristics. Stationary gas detector is widely used in environmental protection, chemical industry, metallurgy, mining, storage, medical and other fields. The working principle of stationary gas ...
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Computational modelling of NOx removal by selective non-catalytic reduction
This paper presents the results of computational kinetic modelling of the removal of nitrogen oxides (NOx) from flue gases by selective non-catalytic reduction (SNCR) process using urea as a reducing agent. CHEMKIN and SENKIN computer codes were used with latest reaction mechanism parameters for simulated conditions in an isothermal plug flow reactor. Flue gas initial conditions were simulated as ...
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Hydrogen sulfide gas emission under turbulent conditions – an experimental approach for free-fall drops
Odor nuisance and sulfide corrosion in sewers carrying septic wastewater are accelerated at points of turbulence such as drops in manholes, but accurate methods or empirical expressions to evaluate the gas stripping rate at those particular sites are still missing. With the aim of improving the current knowledge on the influence of free-fall drops on the release of hydrogen sulfide gas, an ...
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The importance of maintaining your fixed gas analyser
Plant technicians rigorously check for contaminates within the digester and ensure that the performance is optimised but maintaining the gas analyser monitoring the whole process is often overlooked. Many analysers are used in harsh and potentially explosive environments and so it is of paramount importance that the operation runs smoothly and safely. With simple maintenance of your fixed gas ...
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ENVEA launches at Pollutec its new generation of Mercury CEMS
With over 25 years of expertise in mercury monitoring, ENVEA presents its new generation of Mercury CEMS. The SM-5 allows continuous, accurate and reliable measurement of very low concentrations of mercury in flue gas emissions. The system has successfully completed the QAL1 test according to EN 16267 at the TÜV on the lowest range on the market (0-5 μg/Nm3), without the ...
By ENVEA
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