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Optimized carbon dioxide capture process

A carbon dioxide and process technology, applied in the field of carbon dioxide optimized capture process, can solve the problems of high cost, high energy consumption, and limited large-scale application, and achieve the effect of reducing capacity, reducing system energy consumption, reducing sensible heat and latent heat of gasification

Inactive Publication Date: 2018-09-25
青岛海山减碳环保科技有限公司
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  • Claims
  • Application Information

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Problems solved by technology

At present, the commonly used chemical absorption solvents are organic amines, but their large-scale application is severely limited by their high energy consumption and high cost.

Method used

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  • Optimized carbon dioxide capture process

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[0027] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0028] It should be noted that the terminology used here is only used to describe specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0029] In the present invention, unless otherwise specified, "rich solution" and "rich solvent" refer to CO2 t...

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Abstract

The invention discloses an optimized carbon dioxide capture process, which solves the problems of high regeneration energy consumption and high investment in the carbon dioxide capture process of theprior art and has the effects of reducing heat loss, sufficiently recovering solution in tail gas and reducing cost. The technical scheme is characterized in that the optimized carbon dioxide captureprocess comprises the following steps: under the function of a fan, exhaust gas is dehydrated and cooled and then gets into an absorption tower to flow from bottom to top, alkanolamine solution is fedas absorption solution from the top of the absorption tower, and the absorption solution is in countercurrent contact with the exhaust gas to remove carbon dioxide; the purified decarbonized exhaustgas gets into a water scrubbing tower; enriched liquid absorbed from the bottom of the absorption tower is sent into a heat exchanger by an enriched liquid pump, the enriched liquid gets in from the top of a regeneration tower after heat exchange, and after stripping desorption, the enriched liquid is sent into a reboiler and reboiled; gas mixture which is discharged from the top of the regeneration tower is guided into a heat exchanger to undergo water cooling, and then gets into a gas-liquid separator to undergo gas-liquid separation, and separated liquid is guided into the water scrubbing tower.

Description

technical field [0001] The invention relates to the technical field of removing target gas from source gas, in particular to a carbon dioxide optimal capture process. Background technique [0002] Carbon dioxide capture and storage technology (CCS) is the most direct and effective way to reduce greenhouse gas emissions. Currently, there are three main capture methods that can be used in power plants to capture CO 2 Capture, namely pre-combustion capture, post-combustion capture and oxyfuel combustion. Pre-combustion capture is mainly used in IGCC systems, which convert coal into gas by high-pressure oxygen-enriched oxidation, and produce CO after water-gas shift 2 and H 2 , where gas pressure and CO 2 Concentrations are high, it is easy for CO 2 to capture. The advantage of this technology is that the capture system is small, low energy consumption, and has great potential in terms of efficiency and control of pollutants, so it has attracted widespread attention. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/18B01D53/14
CPCB01D53/1475B01D53/18B01D53/185B01D2258/0283Y02A50/20Y02C20/40
Inventor 王宝冬毛维彬王欣驰
Owner 青岛海山减碳环保科技有限公司
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