CN108889251A - A kind of air flow bed device and method of carbon dioxide humidification mineralising - Google Patents
A kind of air flow bed device and method of carbon dioxide humidification mineralising Download PDFInfo
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- CN108889251A CN108889251A CN201810950524.5A CN201810950524A CN108889251A CN 108889251 A CN108889251 A CN 108889251A CN 201810950524 A CN201810950524 A CN 201810950524A CN 108889251 A CN108889251 A CN 108889251A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/1818—Feeding of the fluidising gas
- B01J8/1827—Feeding of the fluidising gas the fluidising gas being a reactant
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- 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
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- 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
- B01D53/83—Solid phase processes with moving reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
- B01J8/002—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor with a moving instrument
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/005—Separating solid material from the gas/liquid stream
- B01J8/006—Separating solid material from the gas/liquid stream by filtration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/1872—Details of the fluidised bed reactor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00654—Controlling the process by measures relating to the particulate material
- B01J2208/00699—Moisture content regulation
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- 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
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- 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
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Abstract
The invention discloses a kind of air flow bed device and method of carbon dioxide humidification mineralising, which includes feed unit, air admission unit, reaction member and separates cycling element, wherein：Feed unit includes raw material humidifier, drier, the first screw(-type) feeder and the second screw(-type) feeder；Air admission unit includes gas mixer；Reaction member include on entrained-flow reactor and entrained-flow reactor many places be arranged furnace in humidifying nozzle；Separating cycling element includes bag filter and air-introduced machine；Humidification is carried out in such a way that pretreatment of raw material, flue gas squirt combination with wet and inside reactor improves mineralising removing CO2Efficiency improves reaction contacting efficiency using entrained-flow reactor, which can not only effectively improve the utilization of waste and can reduce power plant CO2Discharge, is a kind of novel greenhouse gas abatement technology for being very suitable to China's national situation.
Description
Technical field
The invention patent relates to a kind of device and method for trapping mineralising carbon dioxide in flue gas, in particular to a kind of dioxies
Change the air flow bed device and method of carbon humidification mineralising.
Background technique
International Energy Agency report proposes CO2Capturing and seal up for safekeeping (CCS) technology is effective control CO2Discharge three big technologies it
One, plan for the United Nations's the year two thousand fifty by global CO2Concentration controls the contribution degree in the blueprint offer 19% of 450ppm, and predicts complete
The CO that ball will establish 3400 CCS projects and form 5,810,000,000,000 dollars to the year two thousand fifty2Industry.In the latest 20 years, countries in the world government
Fall over each other to subsidize CCS technical research, establishes research and development centre and demonstrative project with university and business tie-up, development technique of trying to be the first patent accounts for
Lead market forward position.
CO2Mineralising technology is a CCS technology new research hotspot nearly ten years.CO is carried out using mineralising technology2Removing tool
It has the advantage that：
1) the big branch of resource reserve is wide, is applicable to magnesium silicate (calcium) ore (predominantly serpentine and olivine) of mineralising
Reserves are more than 30000Gt, more than known fossil energy total amount；And (such as power plant is useless for usable industrial bulk solid waste
Gurry, steel mill residue, cement plant residue, mining plants tailing) raw material is done, realize the two-win of waste utilization and environmental protection；
2) permanently and environmentally friendly sequestration of carbon dioxide realizes that No leakage is monitored without the later period, compared with geological storage, drop
Low risk is easy by public well-established；
3) carbonation reaction is exothermic reaction, can theoretically reduce the demand to heat；
4) to some countries and regions that can not find suitable geological storage stratum or due to hypertelorism pipeline
Pollution sources at high cost have good applicability；
5) a variety of products with economic value are generated in carbonisation, can subsidize the expense of carbon dioxide treatment, and
It is potential to create higher economic benefit formation industrial chain.
The CO for China2Mineralising technology has important value.China is suitable for CO2The serpentine and olivine of mineralising store up
Measure huge, always the amount of sealing up for safekeeping is up to 13000Gt CO2Left and right.
Existing apparatus carbon dioxide mineralising needs to realize following target：
1) energy consumption needed for reducing pretreatment and reacting, develops new pretreatment unit.Such as reduce reaction required temperature and pressure
Power condition, the more large-sized ore of use.Due to the characteristic of ore, different ores is suitable for different preconditioning techniques, needs
It distinguishes and treats.
2) accelerate reaction rate, shorten the reaction time.The reaction time of 2-6 hour is reduced to 30-60min.It needs
Develop the chemical reagent that there is higher ore leaching rate and strengthen carbonic acid efficiency.
3) reproducible chemical reagent is used, realize environmental-friendly and reduces cost.
Summary of the invention
In order to solve the above-mentioned problems of the prior art, the present invention provides a kind of air flow bed of carbon dioxide humidification mineralising
Device and method carries out humidification in such a way that pretreatment of raw material, flue gas squirt combination with wet and inside reactor and improves mineralising
Remove CO2Efficiency improves reaction contacting efficiency using entrained-flow reactor, which can not only effectively improve waste
Utilization and can reduce power plant CO2Discharge, is a kind of novel greenhouse gas abatement technology for being very suitable to China's national situation.
In order to achieve the above object, the present invention adopts the following technical scheme that：
A kind of air-flow bed apparatus of carbon dioxide humidification mineralising, including feed unit, air admission unit, reaction member and separation
Cycling element, wherein：Feed unit includes raw material humidifier 1, drier 2, the first screw(-type) feeder 3 and the second screw(-type) feeder
4；Air admission unit includes gas mixer 5；Reaction member includes many places setting on entrained-flow reactor 6 and entrained-flow reactor 6
Furnace in humidifying nozzle；Separating cycling element includes bag filter 10 and air-introduced machine 11；
Specific connection relationship is as follows：The outlet of raw material humidifier 1 is connected with end entrance on drier 2, brings out under drier 2
Mouth is connected to 3 entrance of the first screw(-type) feeder, the Venturi tube of the first screw(-type) feeder 3 outlet and 6 bottom of entrained-flow reactor
Entrance is connected；CO is not removed2Flue gas 12 is connected with end entrance on gas mixer 5, and the outlet of water constant displacement pump 14 and gas are mixed
The connection of 5 lower inlet of clutch, 5 upper end outlet of gas mixer are connected to the Venturi tube that 6 entrance of entrained-flow reactor is top,
It brings the flue gas after humidification into entrained-flow reactor 6 and carries out mineralising reaction；It is more in the outlet of water constant displacement pump 15 and entrained-flow reactor 6
Locate humidifying nozzle in the furnace of setting (the present embodiment includes humidifying nozzle 7,8,9 in three furnaces) connection, it is anti-that water is sprayed into air flow bed
It answers and improves mineralising reaction removing CO in device 62Efficiency；Air flow bed reacts the outlet of 6 lower ends and is connected with 10 right hand inlet port of bag filter
Logical, 10 lower end solid outlet of bag filter is connected with 4 entrance of the second screw(-type) feeder, the outlet of the second screw(-type) feeder 4 and
The venturi tube inlet of 6 bottom of entrained-flow reactor is connected, and will return from the isolated solid material of bag filter 10
Entrained-flow reactor 6；10 upper end gas vent of bag filter is connected with air-introduced machine 11, and the outlet of air-introduced machine 11 is connected with atmosphere
It is logical, CO will be removed2Flue gas 13 is discharged afterwards.
The method that the air-flow bed apparatus of the carbon dioxide humidification mineralising carries out carbon dioxide humidification mineralising, including walk as follows
Suddenly：
The first step, pretreatment of raw material：Fresh feed enters drier 2 after raw material humidifier 1 is humidified to be done
Dry pretreatment；
Second step：Raw material enters reactor：Pretreated raw material conveys inlet air general pipeline by the first screw(-type) feeder 3,
It is carried along into entrained-flow reactor 6 by wind；
Third step, flue gas is with wet：For not removing by water constant displacement pump 14 and CO with wet vapor2Flue gas 12 is infused together
Enter gas mixer 5, is adjusted by changing 14 flow of water constant displacement pump with moisture；
4th step, flue gas enter reactor：Come out from gas mixer 5 with after wet flue gas with from entrained-flow reactor
The Venturi tube at 6 tops enters in entrained-flow reactor 6；
5th step, be humidified mineralising reaction：Second step enter the raw material of entrained-flow reactor 6 and the 4th stepping to enter air flow bed anti-
The flue gas of device 6 is answered to carry out the CO in mineralising reaction removing flue gas2, pass through entrained-flow reactor 6 from the water of water constant displacement pump 15 out
Humidifying nozzle enters entrained-flow reactor 6 in the furnace of upper many places setting, reacts flue gas with raw material fast fluidization, in mineralising reaction
With moisture by being adjusted by changing 15 flow of water constant displacement pump in entrained-flow reactor 6；
6th step, gas solid separation：The removing CO at 6 top of entrained-flow reactor2Raw material afterwards after flue gas 13 and reaction is first
By cooling, gas solid separation is carried out subsequently into bag filter 10；
7th step, flue gas discharge：Removing CO after gas solid separation2Flue gas 13 draws outdoor through air-introduced machine 11 afterwards；
8th step, solid returning charge：Solid material whereabouts after gas solid separation is collected into bag filter 10, through the second spiral
Batcher 4 is back to the reaction was continued in entrained-flow reactor 6.
Compared with prior art, the invention has the following beneficial technical effects：
Temperature condition needed for reducing carbonation reaction using pretreatment of raw material material, and can be by adjusting humidity
Raw material surface forms liquid film, to improve CO2The rate of adsorption；By flue gas with being squirted in wet and entrained-flow reactor, steamed using water
Gas activated absorption agent pore structure, to accelerate mineralization rate；The addition of vapor enhances CO2Molecule is in adsorbent surface and interior
The travelling performance in portion, is conducive to solid state diffusion process, further increases the mass transfer of gas-solid phase reaction, improves reaction rate, shortens
Reaction time.Reaction contact time is improved using entrained-flow reactor, strengthens CO in gas-solid phase reaction2With connecing for active principle
Touch probability.
Detailed description of the invention
Fig. 1 is the air flow bed schematic device of carbon dioxide of the present invention humidification mineralising.
Specific embodiment
The invention patent is described in further detail with reference to the accompanying drawing.
As shown in Figure 1, a kind of air-flow bed apparatus of carbon dioxide humidification mineralising of the present invention, including feed unit, air inlet list
Member, reaction member and separation cycling element, wherein：Feed unit includes raw material humidifier 1, drier 2, the first screw(-type) feeder
3 and second screw(-type) feeder 4；Air admission unit includes gas mixer 5；Reaction member includes entrained-flow reactor 6 and air flow bed
Humidifying nozzle in the furnace that many places are arranged on reactor 6；Separating cycling element includes bag filter 10 and air-introduced machine 11；
Specific connection relationship is as follows：The outlet of raw material humidifier 1 is connected with end entrance on drier 2, brings out under drier 2
Mouth is connected to 3 entrance of the first screw(-type) feeder, the Venturi tube of the first screw(-type) feeder 3 outlet and 6 bottom of entrained-flow reactor
Entrance is connected；CO is not removed2Flue gas 12 is connected with end entrance on gas mixer 5, and the outlet of water constant displacement pump 14 and gas are mixed
The connection of 5 lower inlet of clutch, 5 upper end outlet of gas mixer are connected to the Venturi tube that 6 entrance of entrained-flow reactor is top,
It brings the flue gas after humidification into entrained-flow reactor 6 and carries out mineralising reaction；It is more in the outlet of water constant displacement pump 15 and entrained-flow reactor 6
Locate humidifying nozzle connection in the furnace of setting, water is sprayed into raising mineralising reaction in entrained-flow reactor 6 and removes CO2Efficiency；Air-flow
The outlet of 6 lower ends of bed reaction is connected with 10 right hand inlet port of bag filter, 10 lower end solid outlet of bag filter and the second spiral shell
Rotation 4 entrance of batcher is connected, and the outlet of the second screw(-type) feeder 4 is connected with the venturi tube inlet of 6 bottom of entrained-flow reactor
It is logical, by the solid material Returning flow bed reactor 6 isolated from bag filter 10；10 upper end gas of bag filter goes out
Mouth is connected with air-introduced machine 11, and the outlet of air-introduced machine 11 is connected with atmosphere, will remove CO2Flue gas 13 is discharged afterwards.
The method that the air-flow bed apparatus of carbon dioxide humidification mineralising of the present invention carries out carbon dioxide humidification mineralising, including it is as follows
Step：
The first step, pretreatment of raw material：Fresh feed enters drier 2 after raw material humidifier 1 is humidified to be done
Dry pretreatment；
Second step：Raw material enters reactor：Pretreated raw material conveys inlet air general pipeline by the first screw(-type) feeder 3,
It is carried along into entrained-flow reactor 6 by wind；
Third step, flue gas is with wet：For not removing by water constant displacement pump 14 and CO with wet vapor2Flue gas 12 is infused together
Enter gas mixer 5, is adjusted by changing 14 flow of water constant displacement pump with moisture；
4th step, flue gas enter reactor：Come out from gas mixer 5 with after wet flue gas with from entrained-flow reactor
The Venturi tube at 6 tops enters in entrained-flow reactor 6；
5th step, be humidified mineralising reaction：Second step enter the raw material of entrained-flow reactor 6 and the 4th stepping to enter air flow bed anti-
The flue gas of device 6 is answered to carry out the CO in mineralising reaction removing flue gas2, pass through entrained-flow reactor 6 from the water of water constant displacement pump 15 out
Humidifying nozzle enters entrained-flow reactor 6 in the furnace of upper many places setting, reacts flue gas with raw material fast fluidization, in mineralising reaction
With moisture by being adjusted by changing 15 flow of water constant displacement pump in entrained-flow reactor 6；
6th step, gas solid separation：The removing CO at 6 top of entrained-flow reactor2Raw material afterwards after flue gas 13 and reaction is first
By cooling, gas solid separation is carried out subsequently into bag filter 10；
7th step, flue gas discharge：Removing CO after gas solid separation2Flue gas 13 draws outdoor through air-introduced machine 11 afterwards；
8th step, solid returning charge：Solid material whereabouts after gas solid separation is collected into bag filter 10, through the second spiral
Batcher 4 is back to the reaction was continued in entrained-flow reactor 6.
Claims (2)
1. a kind of air-flow bed apparatus of carbon dioxide humidification mineralising, it is characterised in that：Including feed unit, air admission unit, reaction
Unit and separation cycling element, wherein：Feed unit includes raw material humidifier (1), drier (2), the first screw(-type) feeder (3)
With the second screw(-type) feeder (4)；Air admission unit includes gas mixer (5)；Reaction member includes that entrained-flow reactor (6) is gentle
Humidifying nozzle in the furnace that many places are arranged on fluidized bed reactor (6)；Separating cycling element includes bag filter (10) and air-introduced machine
(11)；
Specific connection relationship is as follows：Raw material humidifier (1) outlet is connected with end entrance on drier (2), drier (2) lower end
Outlet is connected to the first screw(-type) feeder (3) entrance, the first screw(-type) feeder (3) outlet and entrained-flow reactor (6) bottom
Venturi tube inlet is connected；CO is not removed2Flue gas (12) is connected with end entrance on gas mixer (5), water constant displacement pump
(14) outlet is connected to gas mixer (5) lower inlet, and gas mixer (5) upper end outlet enters with entrained-flow reactor (6)
Mouth is the Venturi tube connection at top, brings the flue gas after humidification into entrained-flow reactor (6) and carries out mineralising reaction；Water constant displacement pump
(15) it exports humidifying nozzle in the furnace being arranged with many places on entrained-flow reactor (6) to be connected to, water is sprayed into entrained-flow reactor (6)
Interior raising mineralising reaction removes CO2Efficiency；The outlet of air flow bed reaction (6) lower end is connected with bag filter (10) right hand inlet port
Logical, bag filter (10) lower end solid outlet is connected with the second screw(-type) feeder (4) entrance, the second screw(-type) feeder (4)
Outlet is connected with the venturi tube inlet of entrained-flow reactor (6) bottom, will consolidate from bag filter (10) is isolated
Body raw material Returning flow bed reactor (6)；Bag filter (10) upper end gas vent is connected with air-introduced machine (11), air-introduced machine
(11) outlet is connected with atmosphere, will remove CO2Flue gas (13) is discharged afterwards.
The method that the air-flow bed apparatus of mineralising carries out carbon dioxide humidification mineralising 2. carbon dioxide described in claim 1 is humidified,
It is characterized in that：Include the following steps：
The first step, pretreatment of raw material：Fresh feed enters drier (2) after raw material humidifier (1) is humidified to be done
Dry pretreatment；
Second step：Raw material enters reactor：Pretreated raw material conveys inlet air general pipeline by the first screw(-type) feeder (3), by
Wind is carried along into entrained-flow reactor (6)；
Third step, flue gas is with wet：For not removing by water constant displacement pump (14) and CO with wet vapor2Flue gas (12) is infused together
Enter gas mixer (5), is adjusted by changing water constant displacement pump (14) flow with moisture；
4th step, flue gas enter reactor：Come out from gas mixer (5) with after wet flue gas with from entrained-flow reactor
(6) Venturi tube at the top of enters in entrained-flow reactor (6)；
5th step, be humidified mineralising reaction：The raw material that second step enters entrained-flow reactor (6) enters air flow bed with the 4th stepping and reacts
The flue gas of device (6) carries out the CO in mineralising reaction removing flue gas2, from water constant displacement pump (15), water out passes through entrained-flow reactor
(6) humidifying nozzle enters entrained-flow reactor (6) in the furnace that many places are arranged on, reacts flue gas with raw material fast fluidization, mineralising
Match moisture in reaction in entrained-flow reactor (6) by adjusting by changing water constant displacement pump (15) flow；
6th step, gas solid separation：Removing CO at the top of entrained-flow reactor (6)2Afterwards flue gas (13) and reaction after raw material first pass through
Cooling is crossed, carries out gas solid separation subsequently into bag filter (10)；
7th step, flue gas discharge：Removing CO after gas solid separation2Flue gas (13) is drawn outdoor through air-introduced machine (11) afterwards；
8th step, solid returning charge：Solid material whereabouts after gas solid separation is collected into bag filter (10), gives through the second spiral
Material machine (4) is back to the reaction was continued in entrained-flow reactor (6).
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