Method and device for fixing CO2 in stack gas by solid castoff carbonatation

Abstract

The invention provides a technique method for integrating coupling in-situ CO2 through utilizing a plurality of processes such as CO2 absorbing separation, carbonation fixation and solid wastes recovery in stack gas and a device thereof. A supergravity rotating packing bed reactor is used for intensifying transmission and multi-phase reacting process through utilizing powerful centrifugal force generated by the high-speed rotary packing bed, which is a breakthrough technology and can strengthen order of magnitude to the transmitting process of liquidoid-controlled CO2, etc., thus greatly improving mass transfer absorption rate of the CO2.

Description

1. Technical field

[0001] The invention belongs to the technology for fixing carbon dioxide in flue gas, in particular to a carbonation of solid waste to fix CO in flue gas 2 method and device thereof. 2. Background technology

[0002] Existing technology: CO 2 It is one of the most important greenhouse gases that cause global climate change, in which a large amount of fossil energy combustion is the cause of CO in the atmosphere 2 The main reason for the increase in concentration. Greenhouse gas CO 2 The control of carbon dioxide has attracted widespread attention from the international community, mainly including three aspects: separation and recovery, immobilization and transformation. The immobilization technologies mainly include geological immobilization, ocean storage, biological carbon sequestration, 2 Mineral carbonation fixation, etc. CO 2 Mineral carbonation fixation is imitated in nature wollastonite CaSiO 3 , olivine Mg 2 SiO 4 , Serpentine Mg 3 Si 2 ...

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