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System and method for capturing flue gas CO2 based on magnetic activated carbon immobilized carbonic anhydrase

A technology of magnetic activated carbon and carbonic anhydrase, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of slow speed and low efficiency of carbon dioxide, reduce mass transfer resistance, simple process flow, and improve stability Effect

Pending Publication Date: 2022-01-04
XIAN THERMAL POWER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The object of the present invention is to overcome the shortcoming of above-mentioned prior art, provide a kind of carbonic anhydrase based on magnetic active carbon immobilization capture flue gas CO 2 System and method to solve the problem of slow speed and low efficiency of ammonia water directly capturing flue gas carbon dioxide

Method used

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  • System and method for capturing flue gas CO2 based on magnetic activated carbon immobilized carbonic anhydrase

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Embodiment 1: as figure 1 As shown, the present invention captures flue gas CO based on magnetic activated carbon immobilized carbonic anhydrase 2 The system includes a catalytic decarburization tower 2, a solidified magnetic activated carbon separation device 29 and a mineralization reaction device 30; the catalytic decarbonization tower 2 is arranged with a fluidized bed catalytic reaction zone 4 and a demisting zone 1 in sequence from bottom to top; the fluidized bed catalytic Reaction zone 4 is provided with gas distribution plate 6, carbonic anhydrase magnetic activated carbon slurry supplement layer 5, and solid-liquid-gas reaction section 3 from bottom to top in sequence; demister 1 is provided with demister 8 and process water spray layer in sequence from bottom to top 7; the first material outlet 12 in the solidified magnetic activated carbon separation device 29 is connected successively with a belt conveyor 14, carbonic anhydrase magnetic activated carbon slu...

Embodiment 2

[0051] Example 2: In the 10L / min simulated flue gas test bench experiment, the carbon dioxide content of the flue gas is 12%, and the immobilized carbonic anhydrase magnetic activated carbon with a particle size range of 50um to 200um is screened, and the flue gas temperature is controlled at 20°C to 30°C. The pH range of the absorption liquid in the fluidized bed section is controlled at 8. The experimental results show that the removal efficiency of carbon dioxide is 81%, and the decarbonization efficiency is significantly improved.

Embodiment 3

[0052] Example 3: In the 10L / min simulated flue gas test bench experiment, the carbon dioxide content of the flue gas is 12%, and the immobilized carbonic anhydrase magnetic activated carbon with a particle size range of 400um to 500um is screened, and the flue gas temperature is controlled at 35°C to 50°C. The pH range of the absorption liquid in the fluidized bed section is controlled at 9, and the experimental results show that the removal efficiency of carbon dioxide is 85%.

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Abstract

The invention discloses a system and a method for capturing flue gas CO2 based on magnetic activated carbon immobilized carbonic anhydrase, the system adopts activated carbon to be magnetized firstly and then immobilizes carbonic anhydrase, on one hand, the recycling of a catalyst carrier is realized by utilizing the characteristic that magnetism can be recycled and separated, and on the other hand, the carbon-based carrier has an excellent porous structure, the carbonic anhydrase loading amount is large, the adsorption capacity is high, the system is very suitable for solid-liquid-gas three-phase reaction, and the reaction is accelerated. The immobilized carbonic anhydrase can improve the stability of the enzyme and is combined with a magnetic separation technology, the enzyme is convenient to recycle and reuse, and the whole process is simple in scheme, high in catalytic efficiency and very suitable for industrial application.

Description

technical field [0001] The invention belongs to the technical field of purification of air pollutants, in particular to a carbonic anhydrase based on magnetic activated carbon immobilization to capture flue gas CO 2 systems and methods. Background technique [0002] CO 2018 2 The emission is about 10 billion tons, which is 1.85 times that of the United States and 2.85 times that of the European Union, accounting for about 100 million tons of global CO2. 2 30% of total emissions. Carbon emissions from coal-fired power plants account for CO 2 more than 43% of total emissions and is the largest CO 2 Emission source. The current carbon emission per unit of power supply is 600g CO 2 / kW·h (the global average is about 450g CO 2 / kW·h), in response to the goal of carbon neutrality, it is estimated that in 2025, the carbon emission of thermal power unit power supply will drop to 460g CO 2 / kW·h, reduced to 50-100g CO in 2060 2 / kW·h, the ability of flue gas to capture carbo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/84B01D53/80B01D53/62B01D53/96
CPCB01D53/8671B01D53/84B01D53/62B01D53/96B01D53/80B01D2257/504Y02A50/20Y02C20/40
Inventor 杨成龙赵瀚辰李阳程广文姚明宇蔡铭杨嵩郭中旭
Owner XIAN THERMAL POWER RES INST CO LTD