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Process for capturing carbon dioxide in flue gas based on wet reclamation technology

A carbon dioxide and wet regeneration technology, applied in chemical instruments and methods, separation methods, inorganic chemistry, etc., can solve problems such as surge in energy consumption, difficulty in regeneration, and reduction in cycle capacity, and achieve simple equipment, short response time, and thermal economy good sex effect

Active Publication Date: 2015-11-11
ZHEJIANG UNIV
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Problems solved by technology

However, Sun's method is only suitable for the enrichment of ultra-low concentration carbon dioxide in dry air. If it is directly applied to the flue gas capture of high humidity and high partial pressure of carbon dioxide in power plants, it will cause a decrease in cycle capacity, difficulty in regeneration, and a surge in energy consumption. series of questions

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  • Process for capturing carbon dioxide in flue gas based on wet reclamation technology
  • Process for capturing carbon dioxide in flue gas based on wet reclamation technology
  • Process for capturing carbon dioxide in flue gas based on wet reclamation technology

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Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0035] In order to adapt to the working environment of the adsorbent used in wet regeneration, the flue gas at the outlet of the desulfurization tower is firstly cooled and dehumidified. figure 1 shown. The flue gas at the outlet of the desulfurization tower is wet flue gas containing a large amount of saturated water vapor. Through the cooling of the regenerator and water cooler, the temperature of the flue gas can be cooled from 45-50°C to 25-30°C. At this time, the flue gas still contains relatively high Much water vapor. Through the electric cooler, the flue gas temperature can be reduced to 4-8°C, and a large amount of water vapor is condensed and precipitated. At this time, the partial pressure of water vapor is only 0.81-1.07KPa. Lower flue gas temperature can greatly reduce the kinetic performance of the adsorption process, so the flue gas after coo...

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Abstract

The invention discloses a process for capturing carbon dioxide in flue gas based on the wet reclamation technology. The process comprises pretreatment, adsorption treatment, washing displacement treatment, water spraying desorption treatment, product air purging treatment, displacement air purging treatment and drying reclamation treatment. A method for efficient and low-cost adsorption separation of high-purity carbon dioxide based on the wet reclamation technology by adopting a functional ion exchange resin membrane material through organic integration with a thermodynamic system of a power plant is provided by the invention.

Description

Technical field [0001] The present invention relates to the technical field of carbon dioxide emission reduction, and in particular to a method for capturing carbon dioxide in flue gas based on wet regeneration technology. Background technique [0002] With the intensification of the greenhouse effect, how to control the emission of greenhouse gases mainly carbon dioxide has attracted widespread attention around the world. Data released by the World Energy Organization (IEA) show that cumulative global carbon dioxide emissions reached 36 billion tons in 2013, of which carbon dioxide emissions from power systems based on fossil fuel combustion accounted for approximately 60%. Carbon dioxide capture and storage technology (CCS) is considered to be one of the most effective ways to control carbon dioxide emissions from power systems. Among them, carbon dioxide capture is an important part of CCS technology. [0003] According to the environmental conditions of power plant flue...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/02C01B31/20C01B32/50
CPCY02A50/20Y02C20/40Y02P20/129Y02P20/151
Inventor 王涛葛坤方梦祥骆仲泱岑可法
Owner ZHEJIANG UNIV
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