CN201459079U - Energy-saving lignite gasification furnace for desulfurization and denitrification - Google Patents
Energy-saving lignite gasification furnace for desulfurization and denitrification Download PDFInfo
- Publication number
- CN201459079U CN201459079U CN2009201113143U CN200920111314U CN201459079U CN 201459079 U CN201459079 U CN 201459079U CN 2009201113143 U CN2009201113143 U CN 2009201113143U CN 200920111314 U CN200920111314 U CN 200920111314U CN 201459079 U CN201459079 U CN 201459079U
- Authority
- CN
- China
- Prior art keywords
- energy
- heater
- furnace body
- saving
- interlayer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The utility model provides an energy-saving lignite gasification furnace for desulfurization and denitrification, wherein a furnace body (1) of the lignite gasification furnace is made of steel plates, the furnace body is designed into a structure having an interlayer (7) filled with an aqueous medium (8), a combustion chamber (4) is arranged at the lower part of the furnace body, and a tapered inlet air distributing disk (10) with an air inlet (11) is arranged at the bottom of the furnace body. The energy-saving lignite gasification furnace has the advantages of stable and reliable structure, good smoke/dust removal effect, excellent effect of desulfurization and denitrification (denitrogenation) and low running and maintenance costs; the SO2 and NOx emission meets the national emission standards; and the energy-saving lignite gasification furnace also has the significant advantages of energy saving and emission reduction.
Description
Technical field: the utility model belongs to the consumption reduction that a kind of grouping of the world economy gives gas, the brown coal hydrogasification producer gas generating unit technical field of structures of reduction of discharging.
Background technology: the SO that coal firing boiler produces
2, NO
xPollution has been countries in the world legislation attention solution since the seventies in last century.SO
2, NO
xBeing the arch-criminal who forms acid rain, is to cause climate change, the impaired major reason of species diversity.For controlling above-mentioned pollutent, to over one hundred the every pollutent (SO of coal fired thermal power plant
2, NO
x, flue dust) the statistics initial cost of control engineering accounts for about 25% of gross investment, the running maintenance expense accounts for about 28% of factory's working cost.Because initial cost and working cost, fired power generating unit (the comprising introduction of foreign technology) total volume of the desulfurizer of China's employing at present is a megawatt more than 25000, accounts for 1.5% of national fired power generating unit total volume.The medium and small coal-fired stove dirt weak effect that not only eliminates smoke, and do not have the desulphurization denitration measure substantially.
Summary of the invention: the purpose of this utility model is: for do not have great amount of investment and the complicated equipment that overcome above-mentioned prior art existence just can not be controlled the SO of coal-fired stove
2, NO
xThe situation that smoke contamination is up to standard provides a kind of Stability Analysis of Structures, reliable, and smoke elimination dirt is effective, and desulphurization denitration (nitrogen) effect is good, and operation expense is low, the SO of discharging
2, NO
xSmoke safely reaches the energy-conservation brown coal hydrogasification stove of desulphurization denitration of discharging standards.
The utility model is achieved by the following technical solution.
The utility model by vapourizing furnace body of heater, gas pipe connect, desulfurizer, combustion chamber, dry distillation chamber, air intake valve, vapor outlet port and charging opening form, it is characterized in that: the material of vapourizing furnace body of heater adopts steel plate to make; The vapourizing furnace body of heater is arranged to the structure of strap clamp layer, in interlayer, is filled with water medium, and be connected a steam with interlayer on the top of body of heater and go out pipe; The combustion chamber is arranged on the body of heater bottom; Be provided with a taper air intake distributing disc at bottom of furnace body, on taper air intake distributing disc, be provided with intake opening.
The width of the utility model interlayer is 3.8～4.4cm; The temperature of water medium is controlled to be less than 960 degree.
The tapering of the utility model taper air intake distributing disc is: go up and widely under the wide ratio than height to be 78～88: 40～50: 20～30.
The combustion chamber is located at the body of heater bottom, is located at brown coal combustiblesubstance vaporization rate low defective in middle part before having overcome.
The utility model is the special type of furnace that adopts the strap clamp layer that steel material makes, the steel plate good heat-transfer, sealing property might as well, the width of interlayer is 3.8～4.4cm, this interval just in time makes the adjusting furnace temperature of fully absorbing heat of the water in the interlayer; The temperature of water medium is controlled to be less than 960 degree, in case generation steam, just discharge by vapour pipe, making brown coal is to allow the carbon burning gasification under the situation of 0.1-0.5 at the bottom of stove coefficient of excess air, middle part, the combustion chamber of stove temperature control is that destructive distillation makes it to become semicoke to brown coal under the situation below 800 ℃, the hydrocarbons that the volatile matter of brown coal, organism and cracking produce etc., in long reducing atmosphere, CO
2Be reduced to CO, SO
2Be reduced to gaseous sulfur; HCN, NO are reduced to CO, H
2, N
2Thereby, eliminated SO
2, NO
xPollution because the transformation efficiency of carbon is up to 99%, the brown coal combustiblesubstance is all gasified, vaporization rate reaches 80% or more, the thermo-efficiency of raising brown coal reaches more than 85%, the fuel economy cost is more than 70%.The SO of discharging
2, NO
xSmoke safely reaches discharging standards.
The utility model is not established traditional dust removal installation, with brown coal is raw material, air is a vaporized chemical, in the conical body of heater that the disposable input steel plate of brown coal is made, reasonably tapering is beneficial to ash, under air-tight state, vaporized chemical is entered by the annular intake opening control of the circle of one on the air channel distributing disc of ash discharge layer furnace bottom taper, brown coal gasify in the lower furnace portion smoulder under anoxic condition, the combustion chamber is arranged on the body of heater bottom, gasification temperature is controlled in 800 ℃, under closure state, water is the temperature control medium in the flue. because gas in the stove, the back-mixing that reaches about 16 hours is arranged between the solid phase and contact, the redox reaction of coal, pyrolytic reaction all compares thoroughly, the overwhelming majority contained in the coal is organic, contained sulphur in volatile matter and the coal, nitrogen etc. also can react with vaporized chemical, in the extremely dense environment of reducing atmosphere, generate S ↑, N, inflammable gas such as CnHn and H. coal is through the upper of furnace body drying, produce semicoke after the destructive distillation of middle part, semicoke enters body of heater bottom gasification section and carries out gasification reaction. because the reduction reaction that destructive distillation takes place makes the carbon turnover ratio, gasification efficiency all is improved; Reduction reaction has reduced furnace temperature, avoided the second pyrolysis of hydrocarbons in the coal, reduce the generation of tar and aldehydes matter, increased the component of inflammable gas. because semicoke concentrates on burner hearth bottom and carries out long gasification reaction, reach combustion time about 16 hours, oxidizing reaction is fully complete, make boiler slag carbon content less than 1%, efficiency of carbon conversion reaches 99%. coal gas that produce because of this vapourizing furnace and in time delivers to production link (stove, kitchen range) combustion heat supplying, only arrange slag every day one time, greatly reduced the sensible heat that coal gas and slag are taken away, after being used to control the water coolant intensification of body of heater inner bag temperature, return the production link heat supply, thereby the carbon utilisation rate of gasification and thermo-efficiency all are improved, and thermo-efficiency reaches more than 85%.
Sulphur content in the coal very easily generates SO under combustion case
2, SO
2Retort section about 800 ℃ very easily is reduced to gaseous sulfur, the tar-removing device (≤200 ℃) of gaseous sulfur outside body of heater, in be deposited the SO that is not reduced
2, in the desulfurizer in furnace roof exit with CaCO
3Reaction, the CaSO of generation
4Do harmless treatment together with slag.
Because envrionment temperature does not all reach 1350 ℃ the threshold value that heating power nitrogen generates in the vapourizing furnace, whole gasification does not have the generation of heating power nitrogen yet, because the gasification furnace inner environment is the excessive reducing atmosphere of long carbon, the fuel bound nitrogen that gasification section generates is reduced to N in retort section again
2Therefore the concentration of oxynitride is very low in the coal gas that produces with CO.
There is not traditional lasting coal process in the stove, there are not forced-air blast and material turning process yet, have only caused pyrolysis of thermal response and redox reaction, in static relatively body of heater, produce coal gas and introduce supporting cooking stove perfect combustion, detect through national statutory machinery, its smoke dust discharge concentration is 10mg/, SO
2Emission concentration is 7mg/, NO
2Emission concentration is 7mg/, is respectively 1/8,1/71,1/57 of national oil-firing boiler emission standard.Once adorn brown coal and produce the sustainable use of coal gas 8-10 hour, can satisfy the heat supply needs of service industry such as food and drink, restaurant and worker's family property coal firing boiler fully, fuel economy cost 75% is last.
The beneficial effects of the utility model are, stove has Stability Analysis of Structures, reliable, and smoke elimination dirt is effective, and desulphurization denitration (nitrogen) effect is good, and operation expense is low, the SO of discharging
2, NO
xSmoke safely reaches discharging standards, has remarkable advantage energy-conservation, that reduce discharging simultaneously.。
Further illustrate the utility model content below in conjunction with drawings and Examples.
Description of drawings:
Fig. 1 is the utility model furnace binding synoptic diagram.
Embodiment:
See Fig. 1, the utility model by vapourizing furnace body of heater 1, gas pipe connect 2, desulfurizer 3, combustion chamber 4, dry distillation chamber 5, air intake valve 12, vapor outlet port 13 and charging opening 6 form, it is characterized in that: the material of vapourizing furnace body of heater 1 adopts steel plate to make; Vapourizing furnace body of heater 1 is arranged to the structure of strap clamp layer 7, in interlayer 7, is filled with water medium 8, and be connected a steam with interlayer 7 on the top of body of heater 1 and go out pipe 9; Combustion chamber 4 is arranged on the body of heater bottom; Be provided with a taper air intake distributing disc 10 at bottom of furnace body, on taper air intake distributing disc 10, be provided with intake opening 11.
The width of interlayer 7 of the present utility model is 3.8～4.4cm; The temperature of water medium 8 is controlled to be less than 960 degree.
The tapering of taper air intake distributing disc 10 of the present utility model is: go up and widely under the wide ratio than height to be 78～88: 40～50: 20～30.
The temperature of combustion chamber 4 of the present utility model is controlled to be less than 800 degree.
The mode of operation of the utility model embodiment is: open feeding cover and drop into brown coal to the body of heater 1 that gasifies by the top filling mouth, when brown coal add to apart from furnace roof 300mm, put into CaCO is housed
3Desulfurizer 3, cover tight feeding cover, light the brown coal of furnace bottom, the gas blower that open to connect blast pipe 18 is simultaneously, open cigarette extinguisher, behind the several minutes, close gas exit valve 14B, open water intaking valve 15, close outlet valve 16, after the interlayer 7 of water-cooling jacket is filled with water, close water intaking valve 15.Open the gas exit valve 14A after the purification, to heat supply cooking stove air feed, Joint pipe for gas 2B's coal gas is connected with blast pipe 18 along Joint pipe for gas 2A.After catching fire, can normally use 8-10 hour the coal gas point.After regulating water intaking valve 15 and outlet valve 16, further adjust air intake valve 12A, temperature and gas yield in 12B the is adjustable gasification body of heater.Brown coal are used up in body of heater, when no coal gas produces, close gas exit valve 14A, open ash output hole 17 and remove lime-ash, stay kindling material, repeat the coal operation, if SO in the coal gas
2Numerical value then needs to change the sweetening agent CaCO in the desulfurizer 3 near emission standard
3
Claims (3)
1. energy-conservation brown coal hydrogasification stove of desulphurization denitration, connect (2), desulfurizer (3), combustion chamber (4), dry distillation chamber (5), air intake valve (12), vapor outlet port (13) and charging opening (6) by vapourizing furnace body of heater (1), gas pipe and form, it is characterized in that: the material of vapourizing furnace body of heater (1) adopts steel plate to make; Vapourizing furnace body of heater (1) is arranged to the water-cooling jacket structure of strap clamp layer (7), in interlayer (7), is filled with water medium (8), and be connected a steam with interlayer (7) on the top of body of heater (1) and go out pipe (9); Combustion chamber (4) are arranged on the body of heater bottom; Be provided with a taper air intake distributing disc (10) at bottom of furnace body, on taper air intake distributing disc (10), be provided with intake opening (11).
2. the energy-conservation brown coal hydrogasification stove of a kind of desulphurization denitration according to claim 1 is characterized in that: the width of interlayer (7) is 3.8～4.4cm.
3. the energy-conservation brown coal hydrogasification stove of a kind of desulphurization denitration according to claim 1 is characterized in that: the tapering of taper air intake distributing disc (10) is: go up and widely under the wide ratio than height to be 78～88: 40～50: 20～30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201113143U CN201459079U (en) | 2009-04-29 | 2009-04-29 | Energy-saving lignite gasification furnace for desulfurization and denitrification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201113143U CN201459079U (en) | 2009-04-29 | 2009-04-29 | Energy-saving lignite gasification furnace for desulfurization and denitrification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201459079U true CN201459079U (en) | 2010-05-12 |
Family
ID=42386433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201113143U Expired - Fee Related CN201459079U (en) | 2009-04-29 | 2009-04-29 | Energy-saving lignite gasification furnace for desulfurization and denitrification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201459079U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105838453A (en) * | 2016-05-31 | 2016-08-10 | 中国科学院广州能源研究所 | Method for in-situ removal of nitrogen pollutants in biomass fuel gas in biomass gasifier |
-
2009
- 2009-04-29 CN CN2009201113143U patent/CN201459079U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105838453A (en) * | 2016-05-31 | 2016-08-10 | 中国科学院广州能源研究所 | Method for in-situ removal of nitrogen pollutants in biomass fuel gas in biomass gasifier |
| CN105838453B (en) * | 2016-05-31 | 2018-06-22 | 中国科学院广州能源研究所 | A kind of method for removing nitrogen-containing pollutant in biomass rough gas in biomass gasifying furnace in situ |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wang et al. | Development and performance evaluation of a clean-burning stove | |
| CN107760387B (en) | High-nitrogen biomass waste gasification combustion heat supply system and process | |
| CN110669538A (en) | Biomass charcoal-heat co-production process and device for continuously realizing heat self-circulation | |
| CN105588127B (en) | Using the boiler combustion system of biomass gasification device | |
| CN205424878U (en) | Biomass steam boiler | |
| CN109990267A (en) | A kind of low NO mixing fired biomass suitable for low-volatility fuelxCombustion system | |
| CN204786347U (en) | Biomass gasification phase separating combustion furnace | |
| CN204490820U (en) | Gasifying biomass kiln gas self-purifying device | |
| CN201459079U (en) | Energy-saving lignite gasification furnace for desulfurization and denitrification | |
| CN110030549A (en) | A kind of biological fuel gas mingled burning installation and technique for coal-burning boiler | |
| WO2015085653A1 (en) | Power generating method of carbon-molecule gasification combustion boiler | |
| CN115200024A (en) | Low-nitrogen oxygen-enriched efficient and clean waste incineration system and method | |
| CN210107372U (en) | Biomass fluidized bed boiler with external bed medium-temperature separation mode | |
| CN106123010A (en) | A kind of combustion method of biomass fuel | |
| CN203464323U (en) | Novel environmental protection boiler with boiler internal smoke and dust abatement clean burning | |
| CN201225671Y (en) | Multiple-fuel environment protection energy-saving type cooking-heating two-purpose stove | |
| CN205579541U (en) | High -efficient low nitrogen gas burner of living beings | |
| CN110157457A (en) | A kind of device and its application from heat supply biomass continuous pyrolysis charcoal | |
| CN200955046Y (en) | Normal-pressure waist-drum type lignite gasifying oven | |
| CN109945210A (en) | A kind of sludge object with heat energy recycle mutually separates Equipment for Heating Processing and method | |
| CN216047638U (en) | Ground torch with coal layer combustion area | |
| CN202852828U (en) | Burning type wet combustion furnace | |
| CN102944005B (en) | Biomass high-temperature pyrolysis gasification combustor | |
| CN201973873U (en) | Energy saving and emission reduction vertical fire tube boiler using water as oxidizing agent | |
| CN207405131U (en) | Oxygen-rich gasification gas genderating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20130429 |