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Oxygen-enriched combustion flue gas purification device

A flue gas purification and oxygen-enriched combustion technology, which is applied in the direction of indirect carbon dioxide emission reduction, air quality improvement, chemical instruments and methods, etc., can solve the problems of complex system, low gas extraction purity, high energy consumption, etc., and reduce manufacturing costs Effect

Active Publication Date: 2013-10-23
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The invention provides an oxygen-enriched combustion flue gas purification device, which solves the problems of the existing flue gas desulfurization and denitrification devices with complex system, high energy consumption, low gas extraction purity and inconvenient use of high-pressure absorption liquid

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Embodiment Construction

[0060] The present invention will be further described below in conjunction with the drawings and embodiments.

[0061] Such as figure 1 As shown, the embodiment of the present invention includes a first-stage compressor C1, a second condenser H2, a second-stage compressor C2, a third condenser H3, and a high-pressure reaction tower R1, and is characterized by:

[0062] It also has a first condenser H1, a first gas-liquid separator S1, a second gas-liquid separator S2, a third gas-liquid separator S3, and a fourth condenser H4;

[0063] The first condenser H1 is connected to the first gas-liquid separator S1 through a pipeline, and the gas outlet of the first gas-liquid separator S1 passes through the first stage compressor C1, the second condenser H2, and the second gas-liquid separator S2 in sequence Pipe connection, the liquid outlet of the first gas-liquid separator S1 drains through the pipe;

[0064] The gas outlet of the second gas-liquid separator S2 is connected to the secon...

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Abstract

The invention provides an oxygen-enriched combustion flue gas purification device, and belongs to a boiler flue gas purification device. The oxygen-enriched combustion flue gas purification device can simultaneously remove NOx, SO2 and Hg in tail flue gas of an oxygen-enriched combustion boiler in a compression process, is applicable to a generating station utilizing an oxygen-enriched combustion technology, and solves the problems that the existing flue gas desulfurization and denitration device is complicated in system and higher in energy consumption, the gas extraction purity is low and a high-pressure absorption liquid cannot be used conveniently. The oxygen-enriched combustion flue gas purification device comprises a first condenser, a first gas-liquid separator, a primary compressor, a second condenser, a second gas-liquid separator, a secondary compressor, a third condenser, a high pressure reaction tower, a third gas-liquid separator and a fourth condenser. With the adoption of the oxygen-enriched combustion flue gas purification device, equipment can be simplified; the running cost can be lowered; the removing efficiency can be guaranteed; the oxysulphide removing efficiency approximates to 100%; the oxynitride removing efficiency can reach 95%; and an Hg removing effect is better.

Description

Technical field [0001] The invention belongs to a boiler flue gas purification device, and particularly relates to an oxy-fuel combustion flue gas purification device, which can simultaneously remove NO in the tail flue gas of an oxy-fuel combustion boiler during a compression process x , SO 2 And Hg, suitable for power plants using oxy-fuel combustion technology. Background technique [0002] Oxygen-enriched combustion flue gas is rich in CO with a concentration of more than 80% 2 In addition, it still contains a higher concentration of SO 2 , NO x Pollutants such as Hg and Hg, the purification problem of the subsequent CO 2 Compression, liquefaction, transportation, resource utilization (EOR) and storage are essential. [0003] At present, the effect of SO in the flue gas of oxy-fuel combustion boiler 2 The main use of relatively mature wet flue gas desulfurization technology; removal of NO x Mainly adopt selective catalytic reduction technology (SCR) and low NO x Combustion techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23J15/02B01D53/60B01D53/78
CPCY02A50/20Y02E20/34
Inventor 张立麒易宝军罗哲林陈珂郑楚光
Owner HUAZHONG UNIV OF SCI & TECH
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