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Ultra cleaning of combustion gas including the removal of CO2

A technology of burning gas and CO2, which is applied in the direction of air quality improvement, separation method, and separation of dispersed particles, etc. It can solve the problems of heat consumption and auxiliary power, high cost of amine process and system, and reduction of net output power, etc., to achieve low cost Effect

Active Publication Date: 2009-08-05
GENERAL ELECTRIC TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] · The process consumes a lot of heat and auxiliary power
[0015] The cost of amine processes and systems is very high, equipped to capture CO 2 The net power output of the power plant of the amine system is greatly reduced

Method used

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  • Ultra cleaning of combustion gas including the removal of CO2
  • Ultra cleaning of combustion gas including the removal of CO2
  • Ultra cleaning of combustion gas including the removal of CO2

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Embodiment Construction

[0032] According to the present invention, there is provided a method for removing from a gas stream comprising CO 2 Methods and systems for most pollutants. These gases typically come from burning or gasifying coal, liquid fuels, gaseous fuels and organic waste. Pollutants include for example SO 2 , SO 3 , HCl, HF, CO 2, Particulate matter including PM2.5, mercury and other volatile residues. High contaminant removal efficiencies are achieved by saturating the gas and effectively cooling it below its adiabatic saturation temperature and preferably as low as 0-20°C, or even 0-10°C. Fine particles and acid mist are nucleation sites for water condensation. In this way, virtually all fine particles and acid mist are removed from the gas stream. Low temperature produces SO 2 , SO 3 , HCl, HF, mercury and other volatile species, which also condense into cold water.

[0033] Cooling the flue gas enables CO-lean 2 Efficient capture of CO in ammoniated solutions or slurries ...

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PUM

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Abstract

The present invention provides ultra-clean combustion gases to near zero residual pollutant concentrations followed by CO capture 2 . High removal efficiency of residual pollutants is achieved by cooling and scrubbing the gas in direct contact with cold water. The temperature of the combustion gases is reduced to 0-20°C for maximum condensation and gas cleaning. in NH 3 -CO 2 -H 2 In the O system, the ammoniated solution or slurry is used to convert CO 2 in CO 2 Capture from cooled and cleaned flue gas in absorber (134). The absorber operates at 0-20°C. By increasing the CO enrichment from the absorber 2 The pressure and temperature of the solution achieve regeneration. CO 2 high vapor pressure and produces NH with low concentration 3 and water vapor pressurized CO 2 material flow. high pressure CO 2 The stream is cooled and scrubbed to recover ammonia and water vapor from the gas.

Description

technical field [0001] The invention relates to ultra-clean combustion of gases with subsequent capture and regeneration of CO 2 systems and methods. Background technique [0002] Most of the energy used in the world today comes from the combustion of fuels containing carbon and hydrogen, such as coal, oil and natural gas. In addition to carbon and hydrogen, these fuels contain oxygen, moisture and pollutants such as ash, sulfur, nitrogen compounds, chlorine, mercury and other trace elements. The damaging effects of pollutants released during combustion have been noted, leading to increasingly stringent restrictions on emissions from power plants, refineries and other industrial processes. Managers of these facilities are in a position to achieve near-zero emissions of pollutants and reduce CO 2 are under increasing pressure. [0003] The art teaches various processes and techniques designed to reduce pollutant emissions from combustion gases. Baghouses, electrostatic p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/14
CPCY02C10/04Y02C10/06Y02A50/20Y02C20/40
Inventor E·加尔
Owner GENERAL ELECTRIC TECH GMBH
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