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Method for recovering and storing CO2 in flue gas by hydrate method

A hydrate and flue gas technology, applied in chemical instruments and methods, carbon compounds, separation methods, etc., can solve the problems of low gas storage efficiency, poor safety, high energy consumption, etc., to improve speed and efficiency, and enhance stability , the effect of efficient storage

Pending Publication Date: 2021-03-12
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Description
  • Claims
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Problems solved by technology

Existing recovery and storage of CO in flue gas 2 The method and system can realize CO 2 Gas separation, but these methods and technologies have disadvantages such as high cost, high energy consumption, low gas storage efficiency, and poor safety

Method used

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  • Method for recovering and storing CO2 in flue gas by hydrate method

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with accompanying drawing:

[0026] like figure 1 Shown: the present invention includes a flue gas pretreatment system, a hydration reaction system and a flue gas post-treatment system, the flue gas enters the flue gas pretreatment system, the output end of the flue gas pretreatment system is connected to the The input end is connected through a pipeline and a valve, the output end of the hydration reaction system is connected with the input end of the flue gas post-treatment system through a pipeline and a valve, and the output end of the flue gas post-treatment system is a net gas discharge end .

[0027]Further, the flue gas pretreatment system is composed of a gas-solid separator 2, a circulation pump 4, a heat exchanger 5, a cooling tower 6 and a washing tower 8, the inlet of the gas-solid separator 2 is a flue gas inlet, and the The outlet of the gas-solid separator 2 is connected to the flue g...

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Abstract

The invention discloses a method for recovering and storing CO2 in flue gas by a hydrate method. The method comprises a flue gas pretreatment system, a hydration reaction system and a flue gas aftertreatment system, flue gas is treated by the flue gas pretreatment system and then enters the hydration reaction system, a hydration agent enters the hydration reactor through the mixed solution storagetank and then generates hydrate with CO2 gas, and primary separation of CO2 in the flue gas is achieved; and the generated CO2 hydrate enters a high-pressure storage tank through a high-pressure pump, so that separation and storage of the carbon dioxide gas in the flue gas are realized. When the flue gas passes through the pretreatment part of the system, solid impurities and acid gas in the fluegas are removed, and then CO2 hydrate is generated in the hydration reactor and stored in the high-pressure storage tank. The generated CO2 hydrate is decomposed under reduced pressure to obtain high-purity CO2 gas, so that the efficient utilization of the CO2 gas in the flue gas is realized; the hydration agent can be recycled, so that the economical efficiency of separation and treatment of CO2in the flue gas is further improved, and the method realizes safe and efficient separation and treatment of CO2 in the flue gas.

Description

technical field [0001] The invention relates to the technical field of greenhouse gas emission reduction and high-efficiency utilization, in particular to a hydrate method for recovering and storing CO in flue gas 2 Methods. Background technique [0002] With the massive consumption of fossil energy, environmental problems have become more and more serious, and the combustion of fossil fuels produces a large amount of carbon dioxide. CO 2 As a kind of important greenhouse gas, the large amount of emission leads to the increasingly serious greenhouse effect, which has become the focus of various fields such as global climate change, environment and economic development. CO 2 The main source of gas emissions is the burning of a large amount of fossil fuels in energy, transportation, industrial production and other links. Controlling carbon dioxide emissions is considered to be an effective way to solve the current greenhouse effect problem. In today's society, fossil fuels...

Claims

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Application Information

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IPC IPC(8): B01D53/62B01D53/78C01B32/50
CPCB01D53/62B01D53/78B01D2257/504C01B32/50Y02P20/129Y02P20/151Y02C20/40
Inventor 张学民李银辉杨惠结张山岭贺冠宇李金平王春龙王英梅
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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