CN108006684B - A kind of carbon dioxide high temperature circulation removal methods based on rotary fixed bed - Google Patents

A kind of carbon dioxide high temperature circulation removal methods based on rotary fixed bed Download PDF

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Publication number
CN108006684B
CN108006684B CN201711225315.6A CN201711225315A CN108006684B CN 108006684 B CN108006684 B CN 108006684B CN 201711225315 A CN201711225315 A CN 201711225315A CN 108006684 B CN108006684 B CN 108006684B
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China
Prior art keywords
fixed bed
caco
filler
flue gas
high temperature
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CN201711225315.6A
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Chinese (zh)
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CN108006684A (en
Inventor
荣鼐
方廷勇
朱曙光
王晏平
马进伟
王庚
胡浩威
马鑫
田玺
潘玮
王杰
李文祥
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Anhui Jianzhu University
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Anhui Jianzhu University
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/62—Carbon oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/81—Solid phase processes
    • B01D53/82—Solid phase processes with stationary reactants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/40—Alkaline earth metal or magnesium compounds
    • B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B01D2251/602—Oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00—Preventing emissions
    • F23J2215/50—Carbon dioxide
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/32—Direct CO2 mitigation

Abstract

The carbon dioxide high temperature circulation removal methods based on rotary fixed bed that the invention discloses a kind of, the fixed bed rotor for filling calcium-base absorbing agent are rotated to high temperature fume side channel, CO in flue gas2It is removed by calcium-base absorbing agent filler and forms CaCO3, remove CO2Flue gas is discharged afterwards, and CaO then passes through carbonation reaction and is converted into CaCO3；Fixed bed rotor, which continues to carry, has been converted into CaCO3Filler rotate to fuel gas wing passage, fuel gas and pure oxygen are passed through the region and occur to burn and release heat to be CaCO3Heat supply is decomposed, high concentration CO is released2, subsequent CO2It is discharged by the reaction zone and is mothballed or used for other purposes, CaCO3Disintegrating and regeneration is CaO；Fixed bed rotor after inner stuffing regeneration rotates the CO into fume side capture separating flue again2, using rotor and the absorbent filler loaded periodically through the CO in fume side and fuel gas side completion flue gas2Circularly removing and enrichment.

Description

A kind of carbon dioxide high temperature circulation removal methods based on rotary fixed bed
Technical field
The present invention relates to CO2Control emission reduction field, and in particular to a kind of carbon dioxide high temperature based on rotary fixed bed Circularly removing method.
Background technique
Global warming makes various countries to the CO during fossil energy utilization2Discharge amount is controlled and is cut down, mesh Preceding CO2Capture technique traps trapping (Lin De before (chemical absorbing, absorption, UF membrane, low-temperature fractionation), combustion after mainly having combustion Rectisol low-temp methanol washes, UOP Selexol polyglycol dimethyl ether process), oxygen-enriched combusting etc..Due to being caught before conventional combustion It traps after collection, combustion and oxygen-enriched combustion technology the problems such as that there are construction costs is high, system effectiveness loss is higher, therefore is inhaled based on calcium base The recycle chemistry chain for receiving agent captures CO2Technology is received significant attention as carbon capture technique after a kind of emerging low cost combustion. Calcium base chemical chain technology circulation capture CO2Be divided into two steps of carbonating and calcining: ingredient is mainly the calcium-base absorbing agent and cigarette of CaO CO in gas2It carries out carbonation reaction and forms CaCO3, can be by CO in flue gas by the reaction2It is separated, to obtain base This is free of CO2Clean flue gas；Then carbonating is formed by CaCO3Experience high-temperature calcination is broken down into CaO and releases CO2, The high concentration CO that the step can get convenient for sealing up for safekeeping2Enriched gas, while the CaO generated can carry out the carbonating-of subsequent cycle Calcining.
Ohio State Univ-Columbus USA, Stuttgart University, Germany, Austria Vienna University of Science and Technology, Canadian mineral products energy The research institutions such as source research center, state coal research institute, Spain establish the small-scale CO based on calcium base chemical chain2 Capturing device, perfect for the technology provide a large amount of beneficial references, and above-mentioned calcium base chemical chain carbon acquisition equipment main problem Be to use recirculating fluidized bed or bubbling fluidized bed as reactor, the Inherent advantage of fluidized bed be material mixing it is strong and Reaction sufficiently, but transports etc. there is also system complex, fluidization of material and feed separation that control difficulty is higher, absorbent simultaneously The problems such as abrasion of particles.
Summary of the invention
It is an object of the present invention to provide a kind of CO based on rotary fixed bed2High temperature circulation removal methods, can be by using Fixed bed as reaction unit, evade system complex, feed separation existing for fluidized-bed reactor and transport operation difficulty it is high and The abrasion of absorbent granules caused by particle strong collision mixes.
The technical solution of the present invention is as follows:
A kind of carbon dioxide high temperature circulation removal methods based on rotary fixed bed, comprising the following steps:
(1) flue gas that temperature is 500-700 DEG C is sent by fume side access road, and fixed bed rotor is rotated to high-temperature flue gas Wing passage, flue gas is when flowing through fixed bed rotor, CO in flue gas2The calcium-base absorbing agent filler for being located at fume side is removed and is formed CaCO3, remove CO2Flue gas is discharged by fume side exit passageway afterwards, and the CaO in filler is then converted by carbonation reaction at this time CaCO3；
(2) it as rotor rotates around the axis, rotates before positioned at the filler of fume side to fuel gas side, fuel gas and oxygen Combustion reaction occurs after being sent by fuel gas side entrance channel, ignition temperature control is 900-1100 DEG C, the height for generation of burning Warm flue gas flows through fixed bed filler, is endothermic CaCO3Decomposition reaction provides heat, fuel gas pure oxygen burning and CaCO3It decomposes Product is CO2, therefore can get the CO of high concentration in fuel gas side outlet channel2Enriched flue gas, the CO2Enriched flue gas can carry out It seals up for safekeeping or other purposes, calcium-base absorbing agent filler is then again by CaCO3Disintegrating and regeneration is CaO, the absorbent filler after regeneration with Rotor continues rotation and comes back to flue gas wing passage, carries out next carbonation reaction capture CO2, so far complete a CO2Removing Circulation.
Wherein, step (1) the fixed bed rotor be cylinder, the filler that fixed bed internal rotor is filled be partial size not Calcium-base absorbing agent particle lower than 1mm.
Wherein, step (1) the calcium-base absorbing agent particle is that lime stone, dolomite or other CaO mass percents are not low In 20% artificial synthesized calcium-base absorbing agent.
Wherein, step (2) fuel gas is one of natural gas, methane, hydrogen, carbon monoxide, synthesis gas or several Kind combination.
The principle of the invention is as follows:
Filler is that the fixed bed rotor of calcium-base absorbing agent is rotated to high temperature fume side channel, CO in flue gas2It is absorbed by calcium base Agent filler removes and forms CaCO3, remove CO2Flue gas is discharged afterwards, and CaO then passes through carbonation reaction CaO+CO2→CaCO3Conversion For CaCO3；Fixed bed rotor, which continues to carry, has been converted into CaCO3Filler rotate to fuel gas wing passage, fuel gas and pure oxygen are logical Enter the region to occur to burn and release heat to be CaCO3Heat supply is decomposed, is reacted for CaCO3→CaO+CO2, CaCO3Decomposition and fuel Gas pure oxygen burning releases high concentration CO2, subsequent CO2It is discharged by the reaction zone and is mothballed or used for other purposes；After filler regeneration Fixed bed rotor rotates the CO into fume side capture separating flue again2, utilize rotor and the absorbent filler period loaded Property CO in flue gas is completed by fume side and fuel gas side2Circularly removing and enrichment.
Compared with prior art, beneficial effects of the present invention are as follows:
(1) based on the CO of fixed bed2Circularly removing process is simple, and without carrying out to absorbent, fluidization is transported and gas-solid divides From reduction operation operation difficulty；
(2) using fixed bed as reactor, there is no fluidization of material to transport energy consumption；
(3) filler eliminates particles collision abrasion caused by fluidization operates, without relative motion so as to prolong in fixed bed Long absorbent service life and the replacement amount for reducing absorbent；
(4) amplification of fume treatment scale can be realized by covering the parallel connection of system more.
Detailed description of the invention
Fig. 1 is the carbon dioxide high temperature circulation removal methods schematic diagram of the present invention based on rotary fixed bed.
Fig. 2 is rotary fixed bed Section A-A schematic diagram.
Fig. 3 is rotary fixed bed section B-B schematic diagram.
Fig. 4 is rotary fixed bed C-C schematic cross-section.
In figure: 1. fume side access roades；2. fume side exit passageway；3. fixed bed rotor；4. shaft；5. fuel gas Side outlet channel；6. fuel gas side entrance channel；7. flue gas；8.CO2Flue gas after removing；9. fuel gas；10. oxygen；11.CO2It is rich Collect flue gas.
Specific embodiment
With reference to the accompanying drawing, technical scheme is described further.
As shown in Figure 1, fume side access road 1, fume side exit passageway 2, fuel gas side entrance channel 6, fuel gas side Exit passageway 5 is fixed, and only fixed bed rotor 3 does period rotation.
Temperature is that 500-700 DEG C of flue gas 7 is sent by fume side access road 1, and flue gas 7 is flowing through fixed bed rotor upwards When 3, CO in flue gas 72The calcium-base absorbing agent filler for being located at fume side removes and forms CaCO3, remove CO2Flue gas 8 is by flue gas afterwards Side outlet channel 2 is discharged, and the CaO in filler then passes through carbonation reaction and is converted into CaCO at this time3；As rotor 3 continues to rotate Axis 4 rotates, and rotates before positioned at the filler of fume side to fuel gas side, fuel gas 9 and oxygen 10 logical by fuel gas side entrance Combustion reaction occurs after being sent into for road 6, and ignition temperature control is 900-1000 DEG C, and the high-temperature flue gas for generation of burning flows through fixed bed Filler is endothermic CaCO3Decomposition reaction provides heat, fuel gas pure oxygen burning and CaCO3Decomposition product is CO2, therefore firing Material gas side exit passageway 5 can get the CO of high concentration2Enriched flue gas 11, the CO2Enriched flue gas 11 can be sealed up for safekeeping or other use On the way, calcium-base absorbing agent filler is then again by CaCO3Disintegrating and regeneration is CaO, and the absorbent filler after regeneration continues to rotate with rotor 3 Flue gas wing passage is come back to, next carbonation reaction capture CO is carried out2, so far complete a CO2Removing circulation.

Claims (4)

1. a kind of carbon dioxide high temperature circulation removal methods based on rotary fixed bed, which comprises the following steps:
(1) flue gas that temperature is 500-700 DEG C is sent by fume side access road, and fixed bed rotor rotates logical to high temperature fume side Road, flue gas is when flowing through fixed bed rotor, CO in flue gas2The calcium-base absorbing agent filler for being located at fume side is removed and is formed CaCO3, remove CO2Flue gas is discharged by fume side exit passageway afterwards, and the CaO in filler is then converted by carbonation reaction at this time CaCO3；
(2) it as rotor rotates around the axis, rotates before positioned at the filler of fume side to fuel gas side, fuel gas passes through with oxygen Combustion reaction occurs after being sent into for fuel gas side entrance channel, and ignition temperature control is 900-1100 DEG C, the high temperature cigarette for generation of burning Gas flows through fixed bed filler, is endothermic CaCO3Decomposition reaction provides heat, fuel gas pure oxygen burning and CaCO3Decomposition product It is CO2, therefore can get the CO of high concentration in fuel gas side outlet channel2Enriched flue gas, the CO2Enriched flue gas can be sealed up for safekeeping Or other purposes, calcium-base absorbing agent filler is then again by CaCO3Disintegrating and regeneration is CaO, and the absorbent filler after regeneration is with rotor Continue rotation and come back to flue gas wing passage, carries out next carbonation reaction capture CO2, so far complete a CO2Removing follows Ring.
2. a kind of carbon dioxide high temperature circulation removal methods based on rotary fixed bed according to claim 1, special Sign is that step (1) the fixed bed rotor is cylinder, and the filler that fixed bed internal rotor is filled is not less than for partial size The calcium-base absorbing agent particle of 1mm.
3. a kind of carbon dioxide high temperature circulation removal methods based on rotary fixed bed according to claim 1, special Sign is that step (1) the calcium-base absorbing agent particle is lime stone, dolomite or other CaO mass percents not less than 20% Artificial synthesized calcium-base absorbing agent.
4. a kind of carbon dioxide high temperature circulation removal methods based on rotary fixed bed according to claim 1, special Sign is that step (2) fuel gas is the combination of one or more of natural gas, methane, hydrogen, carbon monoxide, synthesis gas.
CN201711225315.6A 2017-11-29 2017-11-29 A kind of carbon dioxide high temperature circulation removal methods based on rotary fixed bed Active CN108006684B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108619896B (en) * 2018-05-16 2023-11-21 安徽建筑大学 CO based on switching type packed bed reactor 2 Circulation removing device and method
EP3682962A1 (en) * 2019-01-18 2020-07-22 Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO Direct carbon dioxide capture from air

Citations (4)

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DE102011055678A1 (en) * 2011-11-24 2013-05-29 Technische Universität Darmstadt Calcination apparatus for separating carbon dioxide from a solid
JP2013220953A (en) * 2012-04-13 2013-10-28 Nippon Telegr & Teleph Corp <Ntt> Carbon dioxide separation and recovery device
CN105709563A (en) * 2014-12-19 2016-06-29 株式会社西部技研 Absorption Type-Removal/Condensing Apparatus
CN106975341A (en) * 2017-04-28 2017-07-25 安徽建筑大学 A kind of devices and methods therefor of the calcium-base absorbing agent circularly removing carbon dioxide of carrying vapour activated reactor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6498483B2 (en) * 2015-03-20 2019-04-10 株式会社西部技研 Gas recovery concentrator
US11041420B2 (en) * 2016-09-21 2021-06-22 M-Trigen, Inc. Carbon capture system, apparatus, and method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011055678A1 (en) * 2011-11-24 2013-05-29 Technische Universität Darmstadt Calcination apparatus for separating carbon dioxide from a solid
JP2013220953A (en) * 2012-04-13 2013-10-28 Nippon Telegr & Teleph Corp <Ntt> Carbon dioxide separation and recovery device
CN105709563A (en) * 2014-12-19 2016-06-29 株式会社西部技研 Absorption Type-Removal/Condensing Apparatus
CN106975341A (en) * 2017-04-28 2017-07-25 安徽建筑大学 A kind of devices and methods therefor of the calcium-base absorbing agent circularly removing carbon dioxide of carrying vapour activated reactor

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