CN109601201A - A kind of system and its processing method applying carbon dioxide to greenhouse using normal-pressure hot-water boiler - Google Patents
A kind of system and its processing method applying carbon dioxide to greenhouse using normal-pressure hot-water boiler Download PDFInfo
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- CN109601201A CN109601201A CN201811404915.3A CN201811404915A CN109601201A CN 109601201 A CN109601201 A CN 109601201A CN 201811404915 A CN201811404915 A CN 201811404915A CN 109601201 A CN109601201 A CN 109601201A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/18—Greenhouses for treating plants with carbon dioxide or the like
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/245—Conduits for heating by means of liquids, e.g. used as frame members or for soil heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
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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
- B01D53/60—Simultaneously removing sulfur oxides and nitrogen 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
- B01D53/82—Solid phase processes with stationary reactants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
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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
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
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Abstract
The present invention provides a kind of systems and its processing method for applying carbon dioxide to greenhouse using normal-pressure hot-water boiler, and the system comprises sequentially connected normal-pressure hot-water boiler, dust-extraction unit, flue gas purification device and CO reforming units.The present invention utilizes the flue gas of hot water boiler system discharge, is utilized by exhaust-gas efficient, provides required CO for plant growth2；Meanwhile also the flue gas of hot-water boiler discharge is handled, realize the cleaning treatment and utilization of flue gas.
Description
Technical field
The invention belongs to coal burning apparatus fields, are related to a kind of system and its place for applying carbon dioxide to greenhouse
Reason method more particularly to a kind of system and its processing method for applying carbon dioxide to greenhouse using normal-pressure hot-water boiler.
Background technique
The growth 90%~95% of the plants such as vegetables and flowers comes from photosynthesis, and photosynthetic primary raw material is dioxy
Change carbon.Gas concentration lwevel usually only 300 microlitres/liter in air or so is not able to satisfy the needs of crop.Especially sealing
Under the conditions of the protecting field closed, such as in vegetable or flower greenhouse, because the exchange of greenhouse inner air and outer air is few, often results in carbon dioxide and lack
It is weary, influence the normal growth of plant.Therefore, the concentration for improving carbon dioxide in greenhouse-environment is to improve photosynthetic efficiency, increase
Add an important channel of yield, but in the prior art the generally existing at high cost and wasting of resources the disadvantages of.
102210247 A of CN, which is disclosed, a kind of for vegetables and/or algae provides heat and carbon dioxide using power-plant flue gas
Method and apparatus, comprising: flue gas is guided into level-one heat exchange station, with air carry out first time heat exchange, be green house of vegetables and/
Or algal culture room provides hot-air；Flue gas by a part by the cooling of level-one heat exchange station guides to second level heat exchange station, with
Air carries out second of heat exchange, and smoke temperature is made to drop to the degree of suitable carbon dioxide draw；Extract the carbon dioxide in flue gas；Root
It is inhaled in carbon pond according to the microalgae for needing to add to carbon dioxide green house of vegetables and/or algal culture room.This method mainly will be electric
After carbon dioxide in factory's discharge flue gas is collected, then the carbon dioxide needed is provided to breeding room.But this method only relates to
And the collection of carbon dioxide in flue gas, other pollutants in flue gas effectively can not be removed and be purified, there are still
The problems such as pollutant is exceeded in flue gas.
Currently, flowers or vegetables greenhouse etc. is frequently necessary to provide heat with constant pressure hydro-thermal boiler etc., guarantee that greenhouse meets plant
Necessary temperature is grown, and flue gas is directly discharged into atmosphere, while generating pollution, also results in heat and CO2Waste.
Therefore, heat and CO in boiler smoke can be recycled simultaneously by researching and developing one kind2, while flue gas is purified
System is one of the good approach to solve the above problems.
Summary of the invention
Pollution is easily caused for the flue gas that constant pressure hydro-thermal boiler in existing greenhouse generates and what can not rationally be utilized ask
CO is supplemented in topic and existing greenhouse2The problem of process, utilizes atmospheric hot-water the present invention provides a kind of
Boiler applies the system and its processing method of carbon dioxide to greenhouse.The present invention utilizes the cigarette of hot water boiler system discharge
Gas is utilized by exhaust-gas efficient, provides required CO for plant growth2；Meanwhile also the flue gas of hot-water boiler discharge is carried out
Processing, realizes the cleaning treatment and utilization of flue gas.
To achieve this purpose, the present invention adopts the following technical scheme:
In a first aspect, the present invention provides it is a kind of to greenhouse apply carbon dioxide system, the system comprises according to
Normal-pressure hot-water boiler, dust-extraction unit, flue gas purification device and the CO reforming unit of secondary connection.
The present invention is using the flue gas generated in heating equipment-normal-pressure hot-water boiler in greenhouse, by carrying out to it
After dedusting and purification, fume indication is made to reach flue dust, SO2And NOxDeng minimum discharge standard, while CO concentration < 500mg/
nm3, CO2Volumetric concentration be 10%~15%；And then works as in greenhouse and require supplementation with CO2When, the CO in flue gas can be turned
Turn to the CO of required concentration2, to be reached for supplementing CO in greenhouse2The purpose of gas fertilizer, and effectively normal-pressure hot-water boiler is produced
Raw exhaust gas is recycled.
Meanwhile through dedusting and flue gas purification device treated flue-gas temperature being 100 DEG C~150 DEG C, meet CO purification dress
Temperature requirements in setting.
In the present invention, the flue gas after the processing of CO reforming unit, not only CO2It can achieve concentration needed for greenhouse, simultaneously
CO content is also reduced to safe concentration, eliminates the security risk of CO poisoning.
It is used as currently preferred technical solution below, but not as the limitation of technical solution provided by the invention, passes through
Following technical scheme can preferably reach and realize technical purpose and beneficial effect of the invention.
As currently preferred technical solution, the normal-pressure hot-water boiler is fractional combustion normal-pressure hot-water boiler.
Preferably, in the burner hearth of the normal-pressure hot-water boiler longitudinally disposed partition by burner hearth be divided into bottom connection two chambers
Room, i.e. first chamber and second chamber set primary air piping, the furnace body on primary air piping top on the furnace body in the middle part of the first chamber
On open up feeding gate, the coal-fired height being added from feeding gate is greater than the height of primary air piping, makes the fire coal above primary air piping
Pyrolysis zone is formed, the coal-fired formation coal-char combustion area below primary air piping, coal-char combustion area lower section sets water-cooled grate, first chamber
It is burning-out zone with second chamber lower part；The second chamber is heat transfer zone, and heat exchanger tube is arranged in heat transfer zone.
Coal-fired progress fractional combustion in heretofore described classification normal-pressure hot-water boiler, is added the combustion of normal-pressure hot-water boiler
Coal successively enters heat transfer zone after pyrolysis zone, coal-char combustion area and burning-out zone and exchanges heat, and then provides heat for greenhouse
Air.
As currently preferred technical solution, dedusting grid built in the dust-extraction unit.It, can be according to flue dust in the present invention
Particle size range, select the dedusting grid of different indexs.
After dust-extraction unit is handled, the dust emission concentration in flue gas is down to < 5mg/Nm3, such as 4mg/Nm3、3mg/
Nm3、2mg/Nm3Or 1mg/Nm3Deng and it is lower, it is not limited to cited numerical value, other are unlisted in the numberical range
Numerical value it is equally applicable.
Preferably, the dedusting grid is at least 2 sections, such as 2 sections, 3 sections, 4 sections, 5 sections or 6 sections etc., it is not limited to
Cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable.
Preferably, the flue gas purification device is standing type fixed bed, fills desulfurization denitrification agent in fixed bed, and the desulfurization is de-
Nitre agent is room temperature desulfurization denitrification agent, excellent conventional room temperature desulfurization denitrification agent is selected, as long as making SO in flue gas2And NOxDeng pollution
Object reaches minimum discharge standard.
Gas cleaning flue gas device of the present invention, by the room temperature desulfurization denitrification agent of inside filling, in flue gas itself
At a temperature of carry out catalysis reaction, collaboration processing is carried out to multi-pollutant, makes SO2And NOxEqual pollutants reach minimum discharge standard,
SO2< 10mg/m3, NOx< 50mg/m3；CO concentration < 500mg/Nm simultaneously3, CO2Concentration reaches 10%~15%, meets subsequent
The process demand of each operation.
In the present invention, if without the purified treatment of flue gas before CO reforming unit, SO contained in flue gas2And NOxEqual dirts
Dye object will cause the decline of CO removal efficiency, catalytic activity inactivation, and the flue gas CO concentration after conversion is not used to plastic greenhouse and mends carbon.
As currently preferred technical solution, the export pipeline of the flue gas purification device is equipped with air-introduced machine.
Preferably, the export pipeline of the flue gas purification device is divided into two-way after air-introduced machine, empties all the way, another way with
The connection of CO purification device.
Preferably, it is provided independently from valve from the two-way pipeline that flue gas purification device is drawn through air-introduced machine, to adjust
The folding of pipeline.
In the present invention, two-way is divided by the pipeline for drawing flue gas purification device through air-introduced machine, it can be in greenhouse
Plant does not need supplement CO2When, by the flue gas of boiler minimum discharge by being discharged into atmosphere；CO is required supplementation in greenhouse plant2
When, the flue gas of boiler minimum discharge is cut into flue gas CO conversion reactor, is converted into the CO of required concentration2。
As currently preferred technical solution, the system also includes the oxygen supplementing devices being connected in CO reforming unit, are
CO is converted into CO2Oxygen required for providing.
Preferably, catalyst built in the CO reforming unit removes reforming catalyst, catalytic temperature for efficient CO
It is 60 DEG C~180 DEG C.
In the present invention, the CO purification device under conditions of 100 DEG C~200 DEG C (such as 100 DEG C, 110 DEG C, 120 DEG C,
130 DEG C, 140 DEG C, 150 DEG C, 160 DEG C, 170 DEG C, 180 DEG C, 190 DEG C or 200 DEG C etc., it is not limited to cited numerical value,
Other unlisted numerical value are equally applicable in the numberical range), it is under the effect of the catalyst, CO is complete by the oxygen of supplement
At arrive CO2Conversion, high conversion rate is up to 95%, to be reached for supplementing CO in greenhouse2Purpose.
As currently preferred technical solution, the system also includes gas pressurized device and air-distribution device, the CO
The gas vent of reforming unit is sequentially connected with gas pressurized device and air-distribution device.
In the present invention, the high CO that is generated in CO reforming unit2Concentration clean flue gas passes through supercharging device and air-distribution device,
It is sprayed into greenhouse with reasonable effective speed, reaches and mend CO2Purpose.
As currently preferred technical solution, the system comprises sequentially connected fractional combustion normal-pressure hot-water boiler,
Dust-extraction unit, flue gas purification device, CO reforming unit, gas pressurized device and air-distribution device；
Wherein, in the burner hearth of the fractional combustion normal-pressure hot-water boiler longitudinally disposed partition by burner hearth be divided into bottom connection
Two chambers, i.e. first chamber and second chamber set primary air piping, primary air piping top on the furnace body in the middle part of the first chamber
Furnace body on open up feeding gate, the coal-fired height being added from feeding gate is greater than the height of primary air piping, makes above primary air piping
It is coal-fired form pyrolysis zone, coal-fired below primary air piping forms coal-char combustion area, set water-cooled grate below coal-char combustion area, the
One chamber and second chamber lower part are burning-out zone；The second chamber is heat transfer zone, and heat exchanger tube is arranged in heat transfer zone；
At least 2 sections of dedusting grid built in the dust-extraction unit；Flue gas purification device is standing type fixed bed, in fixed bed
Fill desulfurization denitrification agent；The export pipeline of flue gas purification device is equipped with air-introduced machine, and export pipeline is divided into two-way after air-introduced machine,
It empties all the way, another way is connected to CO purification device, is provided independently from valve on two-way pipeline；CO reforming unit and oxygenating fill
Set connected, catalyst built in CO reforming unit.
Second aspect, the present invention provides the processing methods of above system, the described method comprises the following steps:
The flue gas that the flue gas that normal-pressure hot-water boiler generates obtains after dedusting and purified treatment will into CO reforming unit
CO in flue gas is converted into the CO of required concentration2After be sent into greenhouse.
As currently preferred technical solution, the temperature for the flue gas that the normal-pressure hot-water boiler generates is 150 DEG C~200
DEG C, such as 150 DEG C, 160 DEG C, 170 DEG C, 180 DEG C, 190 DEG C or 200 DEG C etc., it is not limited to cited numerical value, the numerical value
Other unlisted numerical value are equally applicable in range.
Preferably, the flue gas that normal-pressure hot-water boiler generates is after dedusting, dust concentration < 5mg/Nm in flue gas3, such as
4mg/Nm3、3mg/Nm3、2mg/Nm3Or 1mg/Nm3Deng and it is lower, it is not limited to cited numerical value, the numberical range
Other interior unlisted numerical value are equally applicable.
Preferably, the temperature of the purified treatment be 100 DEG C~150 DEG C, such as 100 DEG C, 110 DEG C, 120 DEG C, 130 DEG C,
140 DEG C or 150 DEG C etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable.
Preferably, the purified treatment is desulphurization denitration processing.
Preferably, dust concentration < 5mg/Nm in the flue gas obtained after dedusting and purified treatment3, such as 4mg/
m3、3mg/m3、2mg/m3Or 1mg/m3Deng it is not limited to cited numerical value, other interior unlisted numbers of the numberical range
It is worth equally applicable；SO2< 10mg/m3, such as 10mg/m3、9mg/m3、7mg/m3Or 5mg/m3Deng and it is lower, but simultaneously not only limit
It is equally applicable in other unlisted numerical value in cited numerical value, the numberical range；NOx< 50mg/m3, such as 45mg/m3、
40mg/m3、35mg/m3、30mg/m3、25mg/m3、20mg/m3、15mg/m3Or 10mg/m3Deng and it is lower, it is not limited to
Cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable；CO concentration < 500mg/Nm3, such as
490mg/Nm3、450mg/Nm3、400mg/Nm3、350pmg/Nm3、300mg/Nm3、250mg/Nm3、200mg/Nm3、150mg/Nm3
Or 100mg/Nm3Deng and it is lower, it is not limited to cited numerical value, other unlisted numerical value are same in the numberical range
Sample is applicable in；CO2Volumetric concentration is 10%~15%, such as 10%, 11%, 12%, 13%, 14% or 15% etc., but simultaneously not only
It is limited to cited numerical value, other unlisted numerical value are equally applicable in the numberical range.
Preferably, the temperature of the flue gas obtained after dedusting and purified treatment is 100 DEG C~150 DEG C, such as 100
DEG C, 110 DEG C, 120 DEG C, 130 DEG C, 140 DEG C or 150 DEG C etc., it is not limited to cited numerical value, in the numberical range other
Unlisted numerical value is equally applicable.
Preferably, used catalyst is that CO removes reforming catalyst in the CO reforming unit.
Preferably, the CO removing reforming catalyst includes manganese series catalyzer.
Preferably, the catalytic temperature of the CO removing reforming catalyst is 60 DEG C~180 DEG C, such as 60 DEG C, 70 DEG C, 80
DEG C, 90 DEG C, 100 DEG C, 110 DEG C, 120 DEG C, 130 DEG C, 140 DEG C, 150 DEG C, 160 DEG C, 170 DEG C or 180 DEG C etc., it is not limited to
Cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable.
Preferably, the air speed of the CO removing reforming catalyst is 900h-1~1100h-1, such as 900h-1、950h-1、
1000h-1、1050h-1Or 1100h-1Deng it is not limited to cited numerical value, other interior unlisted numbers of the numberical range
It is worth equally applicable.
Preferably, the CO in flue gas is converted to the CO of required concentration2Greenhouse is sent into after cloth wind by being overpressurized.
Preferably, it is less than 10mg/Nm through CO reforming unit treated CO concentration in flue gas3。
In the present invention, flue gas is after the processing of CO reforming unit, CO2Concentration meet the needs of greenhouse, while CO contains
Amount is also reduced to 10mg/Nm3, eliminate CO poisoning risk.
As currently preferred technical solution, the described method comprises the following steps:
(a) temperature that normal-pressure hot-water boiler generates is that 150 DEG C~200 DEG C of flue gas is dusted and flue gas through dust-extraction unit
Rear flue gas is purified after purification device purified treatment, wherein dust concentration < 5mg/Nm3, SO2< 10mg/m3, NOx<
50mg/m3, CO concentration < 500mg/Nm3, CO2Volumetric concentration is 10%~15%, and flue-gas temperature is 100 DEG C~150 DEG C；
(b) flue gas enters CO reforming unit after the purification that step (a) obtains, and converts required concentration for the CO in flue gas
CO2Afterwards, then through gas pressurized device it is pressurized, after air-distribution device is uniformly distributed, is sent into greenhouse, the processing of CO reforming unit
CO concentration in flue gas afterwards is less than 10mg/nm3。
Compared with prior art, the invention has the following advantages:
(1) present invention is using the flue gas generated in heating equipment-normal-pressure hot-water boiler in greenhouse, by its into
Row purification, then converted, the CO for needing concentration can be provided for greenhouse2；Meanwhile it can be effectively to atmospheric hot-water pot
The exhaust gas that furnace generates is recycled；
(2) present invention is dusted purification and conversion processing to the flue gas generated in normal-pressure hot-water boiler, in final flue gas
Flue dust, SO2And NOxEtc. reaching minimum discharge standard, dust concentration < 5mg/Nm3, SO2< 10mg/m3, NOx< 50mg/m3；
Meanwhile CO concentration is reduced to 10mg/Nm3Hereinafter, eliminating CO poisoning risk.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for applying the system of carbon dioxide described in the embodiment of the present invention 1 to greenhouse；
Fig. 2 is the structural schematic diagram of normal-pressure hot-water boiler described in the embodiment of the present invention 1；
Wherein, 1- normal-pressure hot-water boiler, 2- dust-extraction unit, 3- flue gas purification device, 4-CO reforming unit, 5- air-introduced machine,
6- valve, 7- oxygen supplementing device, 8- gas pressurized device, 9- air-distribution device, 10- primary air piping, 11- water-cooled grate, 12- heat exchange
Pipe, 13- feed inlet.
Specific embodiment
In order to better illustrate the present invention, it is easy to understand technical solution of the present invention, below further specifically to the present invention
It is bright.But following embodiments is only simple example of the invention, does not represent or limit the scope of the present invention, this
Invention protection scope is subject to claims.
Specific embodiment of the invention part provides a kind of system for applying carbon dioxide to greenhouse, the system
Including sequentially connected normal-pressure hot-water boiler 1, dust-extraction unit 2, flue gas purification device 3 and CO reforming unit 4.
The processing method of the system the following steps are included: the flue gas that generates of normal-pressure hot-water boiler 1 through dedusting and purification at
The flue gas obtained after reason converts the CO in flue gas to the CO of required concentration into CO reforming unit 42After be sent into greenhouse.
The following are typical but non-limiting embodiments of the invention:
Embodiment 1:
A kind of system and its processing method for applying carbon dioxide to greenhouse is present embodiments provided, as shown in Figure 1,
The system comprises sequentially connected fractional combustion normal-pressure hot-water boiler 1, dust-extraction unit 2, flue gas purification device 3, CO conversion dresses
Set 4, gas pressurized device 8 and air-distribution device 9；
Wherein, the structure of the fractional combustion normal-pressure hot-water boiler, as shown in Fig. 2, longitudinally disposed partition will in its burner hearth
Burner hearth is divided into the two chambers of bottom connection, i.e. first chamber and second chamber, sets one on the furnace body in the middle part of the first chamber
Secondary air hose 10 opens up feed inlet 13 on the furnace body on 10 top of primary air piping, and the coal-fired height being added from feed inlet 13 is greater than one
The height of secondary air hose 10 makes the coal-fired of 10 top of primary air piping form pyrolysis zone, and the coal-fired of 10 lower section of primary air piping forms semicoke
Combustion zone, coal-char combustion area lower section set water-cooled grate 11, and first chamber and second chamber lower part are burning-out zone；The second chamber
For heat transfer zone, heat exchanger tube 12 is set in heat transfer zone；
3 sections of dedusting grid built in the dust-extraction unit 2；Flue gas purification device 3 is standing type fixed bed, is filled out in fixed bed
Fill desulfurization denitrification agent；The export pipeline of flue gas purification device 3 is equipped with air-introduced machine 5, and export pipeline is divided into two after air-introduced machine 5
Road empties all the way, and another way is connected to CO purification device, and valve 6 is provided independently from two-way pipeline；CO reforming unit 4 with
Oxygen supplementing device 7 is connected, catalyst built in CO reforming unit 4, which is manganese series catalyzer, and catalytic temperature is 60 DEG C~180
DEG C, air speed 900h-1~1100h-1。
System described in the present embodiment is used to provide required CO for greenhouse2, processing method the following steps are included:
(a) flue gas that the temperature that normal-pressure hot-water boiler generates is 180 DEG C is dusted through dust-extraction unit 2 and fills with gas cleaning
It is purified rear flue gas after setting 3 purified treatments, wherein dust concentration < 5mg/Nm3, SO2< 10mg/m3, NOx< 50mg/m3,
CO volumetric concentration < 500mg/Nm3, CO2Volumetric concentration is 10%~15%, and flue-gas temperature is about 130 DEG C；
(b) flue gas enters CO reforming unit 4 after the purification that step (a) obtains, and converts required concentration for the CO in flue gas
CO2Afterwards, then through gas pressurized device 8 it is pressurized, after air-distribution device 9 is uniformly distributed, is sent into greenhouse.
In the present embodiment, flue dust, SO in final flue gas2And NOxEtc. reaching minimum discharge standard, dust concentration < 5mg/
Nm3, SO2< 10mg/m3, NOx< 50mg/m3；Meanwhile CO concentration is reduced to 10mg/m3, eliminate CO poisoning risk.
Embodiment 2:
A kind of system and its processing method for applying carbon dioxide to greenhouse is present embodiments provided, the system
Structure is only that referring to structure in embodiment 1, difference: 2 sections of dedusting grids built in dust-extraction unit 2；The fixation of flue gas purification device
Desulfurization denitrification agent is filled in bed；CO built in CO reforming unit removes reforming catalyst.
The processing method of system method referring to described in embodiment 1, difference are only that: atmospheric hot-water in step (a)
The temperature that boiler generates flue gas is 150 DEG C, is dusted and temperature that rear flue gas is purified after 3 purified treatment of flue gas purification device
About 100 DEG C of degree.Flue dust, SO in final flue gas2And NOxEtc. reaching minimum discharge standard, dust concentration < 5mg/Nm3, SO2
< 10mg/m3, NOx< 50mg/m3；Meanwhile CO concentration is reduced to 10mg/Nm3, eliminate CO poisoning risk.
Embodiment 3:
A kind of system and its processing method for applying carbon dioxide to greenhouse is present embodiments provided, the system
Structure is referring to structure in embodiment 1.
The processing method of system method referring to described in embodiment 1, difference are only that: atmospheric hot-water in step (a)
The temperature that boiler generates flue gas is 200 DEG C, is dusted and temperature that rear flue gas is purified after 3 purified treatment of flue gas purification device
About 150 DEG C of degree.Flue dust, SO in final flue gas2And NOxEtc. reaching minimum discharge standard, dust concentration < 5mg/Nm3, SO2
< 10mg/m3, NOx< 50mg/m3；Meanwhile CO concentration is reduced to 10mg/Nm3, eliminate CO poisoning risk.
Comparative example 1:
This comparative example provides a kind of system and its processing method for applying carbon dioxide to greenhouse, the system knot
Referring to system structure and method in embodiment 1, difference is: not including flue gas purification device in the system for structure and processing method
3, flue gas is directly entered CO reforming unit 4 after dedusting and is converted.
In this comparative example, due to will cause CO catalytic activity inactivation in the not set flue gas purification device 3 of CO reforming unit 4,
The decline of CO removal efficiency, and then be that final CO concentration in flue gas is high, it is not used to greenhouse and mends carbon.
Comparative example 2:
This comparative example provides a kind of system for applying carbon dioxide to greenhouse, the system structure and processing method
Referring to system structure and method in embodiment 1, difference is: the flue-gas temperature that the system generates is lower, is lower than 100 DEG C.
In this comparative example, since flue-gas temperature is lower in the system, it is unable to satisfy flue gas purification device 2 and CO conversion dress
The treatment temperature in 4 is set, so that removal efficiency reduces, is unable to satisfy gas cleaning needs.
The present invention be can be seen that with comparative example based on the above embodiments using the heating equipment in greenhouse-normal pressure heat
The flue gas generated in homogeneous solution-type reactor by purifying to it, then is converted, can provide for greenhouse and need concentration
CO2；Meanwhile the exhaust gas that can effectively generate to normal-pressure hot-water boiler recycles；
Meanwhile the present invention is dusted purification and conversion processing, final flue gas to the flue gas generated in normal-pressure hot-water boiler
Middle flue dust, SO2And NOxEtc. reaching minimum discharge standard, dust concentration < 5mg/Nm3, SO2< 10mg/m3, NOx< 50mg/
m3；Meanwhile CO concentration is reduced to 10mg/Nm3, eliminate CO poisoning risk.
The Applicant declares that the present invention is explained by the above embodiments detailed process equipment and process flow of the invention,
But the present invention is not limited to the above detailed process equipment and process flow, that is, it is above-mentioned detailed not mean that the present invention must rely on
Process equipment and process flow could be implemented.It should be clear to those skilled in the art, any improvement in the present invention,
Addition, selection of concrete mode of equivalence replacement and auxiliary element to each raw material of product of the present invention etc., all fall within of the invention
Within protection scope and the open scope.
Claims (10)
1. a kind of system for applying carbon dioxide to greenhouse, which is characterized in that the system comprises sequentially connected normal pressures
Hot-water boiler, dust-extraction unit, flue gas purification device and CO reforming unit.
2. system according to claim 1, which is characterized in that the normal-pressure hot-water boiler is fractional combustion atmospheric hot-water pot
Furnace；
Preferably, in the burner hearth of the normal-pressure hot-water boiler longitudinally disposed partition by burner hearth be divided into bottom connection two chambers,
That is first chamber and second chamber, set primary air piping on the furnace body in the middle part of the first chamber, on the furnace body on primary air piping top
Feeding gate is opened up, the coal-fired height being added from feeding gate is greater than the height of primary air piping, makes the coal-fired shape above primary air piping
At pyrolysis zone, coal-fired below primary air piping forms coal-char combustion area, sets water-cooled grate below coal-char combustion area, first chamber and
Second chamber lower part is burning-out zone；The second chamber is heat transfer zone, and heat exchanger tube is arranged in heat transfer zone.
3. system according to claim 1 or 2, which is characterized in that dedusting grid built in the dust-extraction unit；
Preferably, the dedusting grid is at least 2 sections；
Preferably, the flue gas purification device is standing type fixed bed, fills desulfurization denitrification agent in fixed bed.
4. system according to claim 1-3, which is characterized in that on the export pipeline of the flue gas purification device
Equipped with air-introduced machine；
Preferably, the export pipeline of the flue gas purification device is divided into two-way after air-introduced machine, empties all the way, and another way is net with CO
Connection is set in makeup；
Preferably, valve is provided independently from from the two-way pipeline that flue gas purification device is drawn through air-introduced machine.
5. system according to claim 1-4, which is characterized in that the system also includes in CO reforming unit phase
Oxygen supplementing device even；
Preferably, catalyst built in the CO reforming unit.
6. system according to claim 1-5, which is characterized in that the system also includes gas pressurized device and
The gas vent of air-distribution device, the CO reforming unit is sequentially connected with gas pressurized device and air-distribution device.
7. system according to claim 1-6, which is characterized in that the system comprises sequentially connected classification combustions
Burn normal-pressure hot-water boiler, dust-extraction unit, flue gas purification device, CO reforming unit, gas pressurized device and air-distribution device；
Wherein, in the burner hearth of the fractional combustion normal-pressure hot-water boiler longitudinally disposed partition by burner hearth be divided into bottom connection two
Chamber, i.e. first chamber and second chamber set primary air piping, the furnace on primary air piping top on the furnace body in the middle part of the first chamber
Feeding gate is opened up on body, the coal-fired height being added from feeding gate is greater than the height of primary air piping, makes the combustion above primary air piping
Coal forms pyrolysis zone, the coal-fired formation coal-char combustion area below primary air piping, sets water-cooled grate, the first chamber below coal-char combustion area
Room and second chamber lower part are burning-out zone；The second chamber is heat transfer zone, and heat exchanger tube is arranged in heat transfer zone；
At least 2 sections of dedusting grid built in the dust-extraction unit；Flue gas purification device is standing type fixed bed, is filled in fixed bed
Desulfurization denitrification agent；The export pipeline of flue gas purification device is equipped with air-introduced machine, and export pipeline is divided into two-way after air-introduced machine, all the way
Emptying, another way are connected to CO purification device, are provided independently from valve on two-way pipeline；CO reforming unit and oxygen supplementing device phase
Even, catalyst built in CO reforming unit.
8. a kind of processing method of such as described in any item systems of claim 1-7, which is characterized in that the method includes following
Step:
The flue gas that the flue gas that normal-pressure hot-water boiler generates obtains after dedusting and purified treatment, into CO reforming unit, by flue gas
In CO be converted into the CO of required concentration2After be sent into greenhouse.
9. according to the method described in claim 8, it is characterized in that, the temperature for the flue gas that the normal-pressure hot-water boiler generates is
150 DEG C~200 DEG C；
Preferably, the flue gas that normal-pressure hot-water boiler generates is after dedusting, dust concentration < 5mg/Nm in flue gas3；
Preferably, the temperature of the purified treatment is 100 DEG C~150 DEG C；
Preferably, the purified treatment is desulphurization denitration processing；
Preferably, dust concentration < 5mg/Nm in the flue gas obtained after dedusting and purified treatment3, SO2< 10mg/m3,
NOx< 50mg/m3, CO concentration < 500mg/Nm3, CO2Volumetric concentration is 10%~15%；
Preferably, the temperature of the flue gas obtained after dedusting and purified treatment is 100 DEG C~150 DEG C；
Preferably, used catalyst is that CO removes reforming catalyst in the CO reforming unit；
Preferably, the CO removing reforming catalyst includes manganese series catalyzer；
Preferably, the catalytic temperature of the CO removing reforming catalyst is 60 DEG C~180 DEG C；
Preferably, the air speed of the CO removing reforming catalyst is 900h-1~1100h-1；
Preferably, the CO in flue gas is converted to the CO of required concentration2Greenhouse is sent into after cloth wind by being overpressurized；
Preferably, it is less than 10mg/nm through CO reforming unit treated CO concentration in flue gas3。
10. method according to claim 8 or claim 9, which is characterized in that the described method comprises the following steps:
(a) temperature that normal-pressure hot-water boiler generates is that 150 DEG C~200 DEG C of flue gas is dusted and gas cleaning through dust-extraction unit
Rear flue gas is purified after device purified treatment, wherein dust concentration < 5mg/Nm3, SO2< 10mg/m3, NOx< 50mg/m3,
CO concentration < 500mg/Nm3, CO2Volumetric concentration is 10%~15%, and flue-gas temperature is 100 DEG C~150 DEG C；
(b) flue gas enters CO reforming unit after the purification that step (a) obtains, and converts the CO in flue gas to the CO of required concentration2
Afterwards, then through gas pressurized device it is pressurized, after air-distribution device is uniformly distributed, greenhouse is sent into, after the processing of CO reforming unit
CO concentration in flue gas be less than 10mg/nm3。
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