Wet-process carbon capture device

Abstract

The invention discloses a wet-process carbon capture device which comprises a carbon dioxide absorption tower, a resolver, a pregnant solution pump, a sodium carbonate storage tank and a barren solution pump, an outlet of the shift gas input pipeline is communicated with an inlet of a distributor in the bottom of the carbon dioxide absorption tower, an outlet in the top of the carbon dioxide absorption tower is communicated with a crude hydrogen output pipeline, and a slurry outlet in the bottom of the carbon dioxide absorption tower is communicated with a slurry inlet of a resolver; a carbon dioxide outlet of the resolver is communicated with a carbon dioxide output pipeline, a sodium carbonate solution outlet of the resolver is communicated with an inlet of the sodium carbonate storage tank, and an outlet of the sodium carbonate storage tank is communicated with an inlet of a spraying layer on the inner side of the top of the carbon dioxide absorption tower. The device can absorb and remove carbon dioxide in the shift gas, and is low in cost, and the operation is simple.

Description

technical field [0001] The invention belongs to the technical field of carbon capture and relates to a wet carbon capture device. Background technique [0002] In the field of carbon capture technology, for the treatment of carbon dioxide in the shift gas, the amine method is generally used to absorb the carbon dioxide in the shift gas. Absorbent, resulting in an increase in processing costs. In addition, during operation, most of the lean liquid and semi-poor liquid processes are used. The first stage is to reduce the absorbent to semi-poor liquid, and then divide the semi-poor liquid into two paths, one of which is It directly enters the absorption tower, and the other way is to reduce the semi-poor liquid to lean liquid and then send it into the absorption tower. The operation process is complicated and the cost is high. Contents of the invention [0003] The purpose of the present invention is to overcome the disadvantages of the above-mentioned prior art, and provide...

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Problems solved by technology

[0002] In the field of carbon capture technology, for the treatment of carbon dioxide in the shift gas, the amine method is generally used to absorb the carbon dioxide in the shift gas. Absorbent, resulting in an increase in processing costs. In addition, during operation, most of the lean liquid and semi-poor liquid processes are used. The first stage is to reduce the absorbent to semi-poor liquid, and then divide the semi-poor liquid into two paths, one of which is It directly enters the absorption tower, and the other way is to reduce the semi-poor liquid to lean liquid, and then send it into the absorption tower. The operation process is complicated and the cost is high

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