Novel flue gas CO2 capture system regeneration process

A new type of flue gas technology, applied in gas treatment, air quality improvement, separation methods, etc., can solve the problems of large number of equipment used, increased project investment cost, high energy consumption of regeneration system, etc., to improve heat transfer efficiency and save engineering Investment cost, effect of reducing energy consumption

Inactive Publication Date: 2021-05-11
CHINA SHENHUA ENERGY CO LTD +2
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Problems solved by technology

[0003] However, in the prior art, the chemical absorption method captures CO 2 The main disadvantage of the technology is that the

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  • Novel flue gas CO2 capture system regeneration process
  • Novel flue gas CO2 capture system regeneration process

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Embodiment Construction

[0026] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0027] The technical solutions provided by various embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0028] A new flue gas CO 2 The capture system regeneration process includes the following steps:

[0029] S1, CO 2 Absorption, the flue gas after desulfurization, denitrificatio...

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Abstract

The invention discloses a novel flue gas CO2 capture system regeneration process which comprises the following steps of: S1, CO2 absorption: flue gas subjected to desulfurization, denitrification and dust removal enters a deep purification tower, the flue gas is pressurized by an induced draft fan and then enters an absorption tower, a barren liquor absorbent is added into the absorption tower, the barren liquor absorbent is in countercurrent contact with the flue gas, and CO2 absorption is completed; S2, generation of rich liquid: the barren liquor absorbent reacts with carbon elements in the flue gas in the absorption tower to form rich liquid, the rich liquid is discharged through the bottom of the absorption tower, and gas is discharged from a tail gas discharge port in the top of the absorption tower; S3, rich liquid heat exchange; S4, falling film type regeneration; and S5, siphoning type regeneration. A falling film type boiler is mainly adopted to replace a conventional thermosyphon type boiler, top spraying falling film type regeneration and boiler bottom liquid inlet syphon type regeneration can be achieved through technological process switching, two regeneration technologies are achieved through one set of technological equipment, the number of equipment is reduced, and the engineering investment cost is saved.

Description

technical field [0001] This application relates to the technical field of atmospheric environmental protection, in particular to a new type of flue gas CO 2 Capture system regeneration process. Background technique [0002] Carbon capture and storage technology (Carbon Capture & Storage, referred to as CCS) is to reduce the emission of CO into the atmosphere without reducing the current consumption of fossil fuels. 2 The means of gas volume, the methods of CCS technology to separate carbon dioxide from flue gas mainly include: membrane separation method, physical adsorption method, low temperature distillation method, absorption separation method, etc. CO capture by chemical absorption 2 Because of its fast absorption rate, high absorption efficiency, simple process, and relatively mature technology, it is widely used, and many demonstration evaluation projects have been built at home and abroad. [0003] However, in the prior art, the chemical absorption method captures ...

Claims

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Application Information

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IPC IPC(8): B01D53/14
CPCB01D53/1475B01D53/1425B01D2258/0283Y02C20/40Y02A50/20
Inventor 张翼刘志江廖海燕余学海赵瑞韩涛何文侯峰李凤军高礼张亚龙高军李严顾永正张帅李飒岩甘泉张兴军陆诗建陆胤君
Owner CHINA SHENHUA ENERGY CO LTD
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