Showing results for: flue gas Articles
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HClear™ Programs: A Solution-Based Approach to HCl Abatement
Fuel Tech recently developed HClear™, an HCl abatement program that relies on the injection of an aqueous solution into combustion gas stream to react with gaseous HCl. This technology involves an aqueous solution that is injected into the flue gas, downstream of the economizer outlet. Upon injection of the aqueous solution into the flue gas stream, a molecular precursor contained within ...
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Case study - Jämtlands Värme, Strömsund
The boiler for Jämtlands Värme in Stromsund was built in 1987. The old flue gas condenser, from another supplier, began leaking and needed to be replaced. Boiler: 10 MW Fuel: Bio fuels Condensor effect: 2 MW The boiler in Strömsund was built in 1987 and in 1994 it was equipped with a flue gas condensor with moisturizer to achieve maximum effect from the fuel. The Air Pollution ...
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Experimental study of the mechanisms of steam reactivation of unreacted calcium-based sorbent for Flue Gas Desulphurisation
This paper reports an experimental investigation of the mechanisms of steam reactivation of spent sorbent for flue gas desulphurisation. Sulphated lime samples were reactivated by using steam to increase the conversion rate of sorbent for flue gas desulphurisation. Samples were characterised using mercury porosimeter, XRD, and SEM. Reactivation temperatures were in the range of 200-800°C. ...
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Brista Project - Case Study
Fortum Värme invests in new condensate cleaning to Bristaverket Block 1. Radscan delivers condensate purification with membrane technology and a quench for improved flue gas cleaning. The plant is put into operation in autumn ...
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Selective catalytic reduction of nitric oxide over copper oxide and cerium oxide catalysts
The selective catalytic reduction of nitric oxide with hydrocarbons in an oxygen-containing simulated flue gas has been investigated for a series of copper oxide and cerium oxide alumina supported catalysts at 600–775 K. The activity of these catalysts for the reduction of NO by methane or propane has been investigated in simulated flue gas. The effects of sulphates on the catalyst, and of water ...
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Overview of mercury control in coal-fired power plants
During combustion, the mercury (Hg) in coal is volatilized and converted to elemental mercury (Hg0) vapor in the high temperature regions of coal-fired boilers. As the flue gas is cooled, a series of complex reactions begin to convert Hg0 to ionic mercury (Hg2+) compounds and/or Hg compounds (Hgp) that are in a solid-phase at flue gas cleaning temperatures or Hg that is adsorbed onto the surface ...
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Desulfurization performance of biotrickling filter on the removal of flue gas adsorbent produced by dual-alkali flue gas desulfurization process
A biotrickling filter (BTF) was used to investigate the elimination of flue gas adsorbent containing sulfite, sulfate, and hydrosulfate; it was undertaken to replace the regeneration step of dual-alkali flue gas desulfurization. Sulfate-reducing bacteria (SRB) isolated from landfill leachate were inoculated, and overall desulfurization performance as well as impact resistance was evaluated. The ...
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Adsorption separation of CO2 from simulated flue gas mixtures by novel CO2 "molecular basket" adsorbents
Adsorption separation of CO2 from simulated flue gas mixtures containing CO2, O2, and N2 by using a novel CO2 "molecular basket" adsorbent was investigated in a flow adsorption separation system. The novel CO2 "molecular basket" adsorbents were developed by synthesising mesoporous molecular sieve MCM-41 and modifying it with polyethylenimine (PEI). The influence of operation conditions, including ...
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Evaluation of producing fuel and chemicals from corn stover pre-treated with flue gas
Production of fuels and chemicals from corn stover is currently at the economic crossroads. Two problems, low yield and high cost, need to be resolved. One of the solutions to these problems is to improve digestibility of corn stover by using cheap chemicals. This paper explores the possibility of developing a low-cost corn fibre pre-treatment method with SO2 and fly ash in flue gas. An economic ...
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Comparison of flue Gas Desulfurization Technologies
https://www.researchgate.net/publication/328279990_Comparison_of_flue_Gas_Desulfurization_Technologies The owners and environmental protection personages also think that the main characteristics of the ammonia desulfurization technology of Mingsheng Chemical Engineering Company are: the absorption tower is a combination tower of absorption, oxidation and crystallization, and the heat from ...
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Reactive separation of CO2 using pressure pelletised limestone
Calcium oxide powder derived by the calcination of mesoporous calcium carbonate provides a higher conversion towards carbonation compared to calcium oxide derived from naturally occurring limestone and hydrated lime. Compaction of this high reactivity sorbent was investigated for its use in CO2 separation from flue gas. It was observed that compaction preserved the porosity of the powder. The ...
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QChem flue gas cooler - Case study
Project: Qatar Chemical Company (Q-Chem) Location: Qatar Engineer: In-House Applicator: Cape East Refractories Sauereisen Representative: Virtual Scientific Products: High Temperature membrane No. 89 Lightweight Acidproof Concrete No. 54LW Environment / Exposure: A major petrochemical manufacturer in Qatar needed a solution for a severe corrosion problem in the flue gas cooler of its ...
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Numerical simulation and field test study of desulfurization wastewater evaporation treatment through flue gas
Aimed at cost saving and pollution reduction, a novel desulfurization wastewater evaporation treatment system (DWETS) for handling wet flue gas desulfurization (WFGD) wastewater of a coal-fired power plant was studied. The system's advantages include simple process, and less investment and space. The feasibility of this system has been proven and the appropriate position and number of ...
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Case study - Novartis, Ireland
Novartis is one of the leading medical industries. They chose Envibat’s technology for cleaning flue gas at one of their production plants in Ireland. The project was completed in June ...
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Re-using excess condensate water - Case Study
Re-using water saves costs and optimizes performace. A waste-to-energy plant in Tampere, Finland incinerates 160,000 tonnes of municipal solid waste annually and is equipped with the latest technology. Despite this, it was producing excess amounts of flue gas condensate water. The waste-to-energy plant has all the latest state-of-the-art technology, including a semi dry system scrubber to ...
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How RTO works and why it desires ceramic blocks
1. An RTO burns very lean waste gases without using much fuel. Operating temperature is about the same as a normal thermal oxidizer (say 1600oF), but the hot flue gas passes through a heat exchange module before reaching the stack. At least 2 of these modules are used -- one is always absorbing heat from the flue gas and one is always shedding heat into the waste gas. The modules are insulated ...
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AMETEK THERMOX Introduces the WDG-V Combustion Analyzer
Abstract AMETEK THERMOX Introduces the 5th Generation THERMOX Combustion Gas Analyzer in a CONTROL Magazine Exclusive. WDG analyzers are based on a zirconium oxide cell that provides a reliable and cost-effective solution for measuring excess oxygen in flue gas as well as CO and methane levels. Information from the Gas Analyzer allows operators to obtain the highest fuel efficiency, while ...
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Precious Metal Recovery - Case Study
Application Circuit boards containing precious metals Asahi Holdings in Japan, formerly in partnership with a UK metal technology specialist, recover precious metals from printed circuit board and similar type wastes. The ERG Group of companies were able to supply a complete waste concentrating system which included the furnace, thermal oxidiser and flue gas cleaning. The process achieved 100 ...
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Project Water-Heating Boiler House Ekopartneris - Case Study
17,5 MW Lithuania, Kaunas 2015 November 18 Main equipment Fuel supply system - grounded warehouse with moving platforms Fuel combustion system - Axis Industries grate furnace Boiler - water heating Additional heat generation equipment - flue gas condensing economizer Flue gas cleaning system - multicyclone and two-stage electrostatic precipitator Purpose of the facility ...
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Process flue gas monitoring for combustion optimization - Case Study
Customer: Any industry having a stake in improved combustion technologies Material measured: Combustion flue gases Installation: At the boiler outlet Function: Reliable and accurate monitoring of O2 and CO for combustion control optimization Application Combustion has a number of outputs such as the ash and the emission to the atmosphere of flue gas. Before the flue gas cleaning system, ...
By ENVEA
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