A composite absorbent cycle capture co with hydration reactor 2 device and method
A hydration reactor and the technology of the reactor, which are applied in the fields of energy technology and environmental protection, can solve the problems of deactivation of calcium-copper-based composite absorbent, reduction of effective reaction area, decrease of carbonation rate, etc., so as to slow down the deactivation phenomenon of CaO , the effect of improving energy efficiency and reducing water consumption
Active Publication Date: 2019-10-11
SOUTHEAST UNIV
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Problems solved by technology
[0003] Calcium-copper-based composite absorbent for cyclic capture of CO 2 Technology faces challenges with conventional calcium-based absorbents for cyclic capture of CO 2 The problem with the same technology is that the active ingredient CaO will collapse and block the pores due to sintering at high temperature, which will eventually lead to a decrease in the effective reaction area and a decrease in the carbonation rate, which is manifested as the deactivation of the calcium-copper-based composite absorbent
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[0030] Such as figure 1 As shown, a calcium-copper-based composite absorbent with a hydration reactor of the present invention captures CO in a cycle 2The device includes hydration reactor, carbonation reactor, calcination-reduction reactor, air reactor, heat exchanger, condenser, and connecting pipes between each part; wherein the material inlet of hydration reactor is connected with calcination-reduction reaction The water vapor inlet of the hydration reactor is connected to the outlet of the heat exchanger; the outlet of the hydration reactor is connected to the inlet of the air reactor; the outlet of the air reactor is connected to the inlet of the carbonation reactor; the outlet of the carbonation reactor is connected to the calcination-reduction The inlet of the reactor is connected; the material outlet of the calcination-reduction reactor is connected with the air reactor one way, and the hydration reactor is connected with the hydration reactor one way, the gas outlet ...
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The invention discloses a hydration-reactor-loaded device and method for CO2 cyclic capture through a composite absorbent. The hydration-reactor-loaded device comprises a calcination-reduction reactor(1), a condenser (2), a hydration reactor (3), an air reactor (4), a carbonation reactor (5), a heat exchanger (6) and connecting pipelines between all the parts. According to the method for CO2 cyclic capture, Ca(OH)2 and CaO in the calcium-copper-based composite absorbent react with smoke entering the carbonation reactor, and CO2 is captured; a solid product reacts with CH4 led into the calcination-reduction reactor in the calcination-reduction reactor, and the high-concentration CO2 is generated; part of a reacted solid body enters the hydration reactor to improve the pore structure and enhance the reaction activity; and the activated composite absorbent enters the air reactor to complete regeneration of a copper-based oxygen carrier. The CO2 in the smoke is captured in a low-energy-consumption mode by applying the calcium cycle coupling chemical chain process, and meanwhile the absorbent carbonation performance degradation is restrained through a hydration reaction.
Description
technical field [0001] The present invention uses the method of calcium cycle coupling chemical chain combustion to capture CO 2 , while adding a hydration reactor, which belongs to the interdisciplinary field of energy technology and environmental protection technology. Background technique [0002] Calcium-copper-based composite absorbent for cyclic capture of CO 2 The technology refers to the use of composite absorbents with CuO and CaO as the main components to capture CO produced by coal combustion or gasification 2 , generating CaCO 3 , and then react with gas fuel to release heat to calcine CaCO 3 , to achieve CO 2 Concentrated technology. This technology not only has the advantages of low calcium cycle raw materials and wide sources, but also introduces chemical chain combustion to avoid the use of high energy-consuming oxygen-enriched combustion to regenerate calcium-based absorbents. The process flow is mainly divided into three steps: CaO / CuO enters the carb...
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IPC IPC(8): F23C13/00B01D53/81B01D53/62C01B32/50
CPCB01D53/62B01D53/81B01D2251/404B01D2251/602B01D2257/504F23C13/00Y02C20/40Y02P20/151
Inventor 段伦博石田陈健
Owner SOUTHEAST UNIV