Reactor for mineralization fixation of carbon dioxide by fortified calcium-base solid wastes in ammonia medium system and application method thereof

A carbon dioxide and reactor technology, applied in chemical instruments and methods, calcium carbonate/strontium/barium, chemical/physical processes, etc., can solve the problems of difficult sealing, large kinetic energy consumption, easy deposition of solid materials, etc., to reduce energy Consumption, increase utilization, increase conversion rate and effect of reaction rate

Inactive Publication Date: 2015-09-16
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This reactor overcomes the disadvantages of the stirred tank reactor, such as the large kinetic energy consumption, the difficulty of sealing the high-pressure system, and the easy deposition of solid materials in the bubble column reactor without mechanical stirring.

Method used

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  • Reactor for mineralization fixation of carbon dioxide by fortified calcium-base solid wastes in ammonia medium system and application method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The size of the pressurized loop reactor is as follows: the height-to-diameter ratio of the guide tube (2) in the pressurized loop reactor (1) is 20:1, and the cross-sectional area of ​​the pressurized loop reactor (1) and the flow guide The ratio of the cross-sectional area of ​​the tube (2) is 1:0.2, the cone angle of the lower end of the guide tube (2) is 30 degrees, and the ratio of the cross-sectional area of ​​the lower end of the guide tube (2) (3) is 1:0.3.

[0035] Operation method: Stir and mix the phosphogypsum particles with a certain particle size and a certain concentration of ammonium carbonate aqueous solution obtained after pretreatment, and continuously inject them into the pressurized loop reactor (1) through the feed port (8). ℃ temperature and the gas inlet (4) through the gas inlet (4) continuously into the pressure of 40bar containing CO 2 gas, in which CO 2 The content is 20%, and the enhanced carbonation reaction is carried out. The product af...

Embodiment 2

[0038] The size of the pressurized loop reactor is as follows: the height-to-diameter ratio of the guide tube (2) in the pressurized loop reactor (1) is 2:1, and the cross-sectional area of ​​the pressurized loop reactor (1) is related to the flow guide The ratio of the cross-sectional area of ​​the tube (2) is 1:0.8, the cone angle of the lower end of the diversion tube (2) (3) is 150 degrees, and the ratio of the cross-sectional area of ​​the lower end of the diversion tube (2) (3) is 1:0.8.

[0039] Operation method: Stir and mix the phosphogypsum particles with a certain particle size and a certain concentration of ammonium carbonate aqueous solution obtained after pretreatment, and continuously inject them into the pressurized loop reactor (1) through the feed port (8). ℃ temperature and the gas inlet (4) through the gas inlet (4) continuously into the pressure of 1bar containing CO 2 gas, in which CO 2 The content is 99.99%, and the enhanced carbonation reaction is car...

Embodiment 3

[0042] The size of the pressurized loop reactor is as follows: the height-to-diameter ratio of the guide cylinder (2) in the pressurized loop reactor (1) is 10:1, and the cylinder cross-sectional area of ​​the pressurized loop reactor (1) The ratio of the cross-sectional area of ​​the tube (2) is 1:0.5, the cone angle of the lower end of the diversion tube (2) (3) is 90 degrees, and the ratio of the cross-sectional area of ​​the lower end of the diversion tube (2) (3) is 1:0.5.

[0043] Operation method: Stir and mix the phosphogypsum particles with a certain particle size and a certain concentration of ammonium carbonate aqueous solution obtained after pretreatment, and continuously inject them into the pressurized loop reactor (1) through the feed port (8). ℃ temperature and the gas inlet (4) through the gas inlet (4) continuously into the pressure of 10bar containing CO 2 gas, in which CO 2 The content is 99.99%, and the enhanced carbonation reaction is carried out. The p...

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Abstract

The invention relates to a reactor for mineralization fixation of carbon dioxide by fortified calcium-base solid wastes in an ammonia medium system and an application method thereof. The invention is characterized in that a pressurized loop reactor is used in the ammonia medium system's fortified calcium-base solid wastes mineralization fixation process of carbon dioxide. During the process, the reaction temperature is 60-200 DEG C, duration time of the reaction is 5-60 min, CO2 gas partial pressure is 1-40bar, and CO2 gas concentration is 20-99.99%. By the adoption of the pressurized loop reactor, defects such as high kinetic energy consumption of a stirred-tank reactor, large sealing difficulty of an overpressure system, easy deposition of solid materials in a mechanical agitation-free bubble column reactor and the like are overcome. The reactor provided by the invention has advantages as follows: pneumatic stirring replaces mechanical agitation; energy consumption is low; and the reactor is easy to process and is simple to clean, maintain and operate. The reactor is especially suitable for the ammonia medium system's fortified calcium-base solid wastes mineralization fixation process of carbon dioxide, has characteristics of high pressure gas and high solid content, and is easy for industrial scale-up.

Description

technical field [0001] The invention belongs to waste resource utilization, greenhouse gas CO 2 The technical field of emission reduction and resource utilization, in particular, relates to a reactor and a use method for strengthening calcium-based solid waste mineralization and fixing carbon dioxide in an ammonia medium system. Background technique [0002] Greenhouse gas CO 2 Global climate change caused by emissions has become a major concern of the world. CO is being carried out extensively at home and abroad 2 Research and development and industrial trials of large-scale disposal technologies. Geological storage, marine storage, and mineralized fixation are CO 2 Primary means of mass disposal. CO 2 Mineralization fixation is not only seen as a way to achieve CO 2 An effective way to obtain stable storage is also to achieve CO 2 An effective way for large-scale resource utilization. Compared with natural magnesium-based minerals, the use of calcium-containing bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/08B01F13/02C01F11/18B01F33/40
Inventor 李会泉赵红涛包炜军李松庚王晨晔孙振华盛勇李兵梅胜明周佩
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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