CN103557517B - The method and apparatus of living beings second pyrolysis - Google Patents
The method and apparatus of living beings second pyrolysis Download PDFInfo
- Publication number
- CN103557517B CN103557517B CN201310598950.4A CN201310598950A CN103557517B CN 103557517 B CN103557517 B CN 103557517B CN 201310598950 A CN201310598950 A CN 201310598950A CN 103557517 B CN103557517 B CN 103557517B
- Authority
- CN
- China
- Prior art keywords
- combustion chamber
- living beings
- pyrolysis
- oxidation reaction
- boiler
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 28
- 238000002485 combustion reaction Methods 0.000 claims abstract description 61
- 239000007789 gas Substances 0.000 claims abstract description 39
- 239000003054 catalyst Substances 0.000 claims abstract description 36
- 238000002309 gasification Methods 0.000 claims abstract description 31
- 239000002028 Biomass Substances 0.000 claims abstract description 27
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 25
- 239000002737 fuel gas Substances 0.000 claims abstract description 19
- 239000004744 fabric Substances 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 10
- 238000005336 cracking Methods 0.000 claims abstract description 8
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 6
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 6
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 6
- 238000005979 thermal decomposition reaction Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 239000000428 dust Substances 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 21
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 12
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 12
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 12
- 238000000746 purification Methods 0.000 claims description 10
- 230000003197 catalytic effect Effects 0.000 claims description 9
- 229960004643 cupric oxide Drugs 0.000 claims description 6
- 239000011787 zinc oxide Substances 0.000 claims description 6
- 239000010902 straw Substances 0.000 claims description 4
- 206010002660 Anoxia Diseases 0.000 claims description 3
- 241000976983 Anoxia Species 0.000 claims description 3
- 206010021143 Hypoxia Diseases 0.000 claims description 3
- 230000007953 anoxia Effects 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 235000013311 vegetables Nutrition 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims description 2
- 238000009826 distribution Methods 0.000 abstract description 6
- 238000006555 catalytic reaction Methods 0.000 abstract description 2
- 239000000779 smoke Substances 0.000 description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 15
- 230000007613 environmental effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- 229910044991 metal oxide Inorganic materials 0.000 description 8
- 150000004706 metal oxides Chemical class 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000003245 coal Substances 0.000 description 7
- 238000004227 thermal cracking Methods 0.000 description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000003500 flue dust Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 229910003455 mixed metal oxide Inorganic materials 0.000 description 3
- 239000011812 mixed powder Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- 239000002802 bituminous coal Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 241001270131 Agaricus moelleri Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 description 1
- 241000658379 Manihot esculenta subsp. esculenta Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007233 catalytic pyrolysis Methods 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Solid-Fuel Combustion (AREA)
Abstract
The present invention discloses a kind of method of living beings second pyrolysis, and step is: by biomass thermal decomposition gasification, obtain burning mixture; Catalysis is carried out to burning mixture, hydrocarbon larger for molecular weight is carried out cracking, obtain low-carbon (LC) molecule fuel gas; Low-carbon (LC) molecule fuel gas is burnt or collected.The present invention also discloses the device of living beings second pyrolysis, and comprise charging aperture, exhaust outlet, combustion chamber and slag-drip opening, charging aperture is connected with combustion chamber, and exhaust outlet is arranged at above combustion chamber, and slag-drip opening is arranged at below combustion chamber; Combustion chamber comprises dry section, reducing zone, oxidation reaction zone, cloth headroom, catalyst bed and surplus heat collection device, dry section, reducing zone and oxidation reaction zone are positioned at below combustion chamber, dry section is connected with reducing zone, reducing zone is connected with oxidation reaction zone, gas distribution is spatially located at above dry section, catalyst bed is arranged at above gas distribution space, and surplus heat collection device is arranged at top, combustion chamber.Be applicable to biomass combustion.
Description
Technical field
The present invention relates to the square law device used containing biomass catalyzing thermal cracking gasification and unified boiler, namely, by the clean fuel gas that biomass catalyzing thermal cracking gasification obtains, with the energy that this gas instead boiler was commonly used originally, boiler afterheat can be reclaimed the method and device that are used for the comprehensive cyclic utilization such as boiler heating simultaneously.
Background technology
Vertical, Horizontal manual burning boiler, chain-grate boiler, CFBB etc. of existing use, a large amount of application is had in all trades and professions, effect is good, but all there is raw material can not burn completely, chimney emits a large amount of black smoke, dust is many, needs to do the investment of larger purifying and dedusting, and thermal efficiency loss is larger.
Such as the power economized boiler of disclosed Chinese patent report is as follows:
1. application number: CN02275213.7, title: there is device for eliminating smoke and dust horizontal boiler in stove, application (patent right) people: Wang Qing; Sun Donghong; Address: No. 169, Changchun road, Chuanying District, Jilin City, Jilin Province, summary: belong to stratiform coal burning horizontal field of boilers, relate to the horizontal boiler with device for eliminating smoke and dust in stove.For solving the problems such as existing boiler black smoke, dust polluting environment, efficiency is low, in burner hearth, above coal seam, be provided with porous layering stagger arrangement shock flow type device for eliminating smoke and dust.It is at least three layers of secondary air channel arranged in parallel, it is provided with several nozzles in opposite directions with correspondence on the corresponding secondary air channel be provided with in layer both sides, each layer airduct two ends are connected with Secondary Air air main, and this device can be located at inside and outside burner hearth, and each layer secondary air channel is fixed on the furnace wall of both sides.Be that concentric shafts or eccentric shaft are arranged with layer secondary air channel top nozzle.
2. the patent No.: 200810013167, title: horizontal coal combustion and gasification environmentally-friendly boiler, open (bulletin) day: 20100317, application (patent right) people: Liu Weiyi, invention (design) people: Liu Weiyi, summary: comprise body of heater, fire grate, air channel dish, square air channel box, burner hearth and a combustion chamber; Upper of furnace body is flat-top, body of heater just, be below vertical plane with both sides, body of heater is horizontal square-box-shaped structure; There is multiple waterpipe type fire grate, correspondingly be provided with wind channel tube and be provided with multiple air ports eye above, the two ends of wind channel tube are connected with horizontal trunk wind channel tube respectively, horizontal trunk wind channel tube two ends are connected with longitudinal trunk wind channel tube two ends, form square grate-type air channel dish structure, before outer wall in the middle part of burner hearth and both sides are provided with square air channel box, and air channel box is provided with multiple air duct hole and airduct is housed and is communicated with burner hearth, form secondary air duct structure; Burner hearth and centre, combustion chamber are provided with air channel and coil, and its center arranges spray-hole, and surrounding is provided with multiple air holes eye, and the side of air channel dish is provided with and connects airduct formation tertiary air road structure.
3. the patent No.: 201210277607, title: the method for miniature boiler burning II, III class bituminous coal combustion smoke abatement and dust control, open (bulletin) number: CN102798120A; Application (patent right) people: Qingdao Yanyangtian Environment Protection Co., Ltd., invention (design) people: Zhang Guojun; Guo Xiaoyan; Li Xiuqiang; Yang Ji is strong; Chen Lin; Summary: the method that the invention discloses a kind of miniature boiler burning II, III class bituminous coal combustion smoke abatement and dust control, it comprises: 1) burn, eliminate smoke: during boiler combustion, First air enters fire grate, coal in burner hearth takes fire, flue gas in burner hearth blocks by the chimney arch that the flue gas produced in combustion process is arranged by burner hearth rear in burner hearth, produce negative pressure simultaneously, Secondary Air is automatically opened air-supply in chimney arch and is made chimney arch interruption-forming oxygen-rich area, and flue dust is at chimney arch mouth Thorough combustion again; 2) dedusting: after carrying out heat exchange after the flue gas after burning, smoke elimination enters the first heat transfer zone of boiler, enter some rows successively in the second heat transfer zone and erect smoke pipe, its direction be the first perpendicular smoke pipe from top to bottom, second perpendicular smoke pipe is from bottom to top, 3rd perpendicular smoke pipe is from top to bottom, and the rest may be inferred, flue gas dust in cyclic process falls into cleaning door.
4. application number: 200920030490.4, publication number: 201514033U, title: far infrared fire coal gasification environment-protection boiler, applicant: Du Weixin, address: No. 31, Xinhe River street, Weishan County, Shandong Province Office of Science and Technology turns energy-conserving and environment-protective research institute, invention (design) people: Du Weixin, summary: the utility model is far infrared fire coal gasification environment-protection boiler.A kind of far infrared fire coal gasification environment-protection boiler.Lower portion of furnace body has fire grate, and fire grate top is burner hearth, and there are several Ji Yan clean rooms burner hearth top.It is characterized in that: have dividing plate that burner hearth is divided into vaporizer and combustion chamber in burner hearth, there is overfiren air port Liang Geji cigarette clean room, burner hearth top, tertiary air orifice, and Ji Yan has super heat-conductive pipe around clean room, and there is far infrared combustion purification device indoor.Vaporizer has the passage making coal gas lead to combustion chamber, and there is slag notch combustion chamber, and fire grate is rotary type.
Above-mentioned disclosed power economized boiler yet comes with some shortcomings part, mainly fuel is taked direct-fired, thermal conversion efficiency is not high, there is the phenomenon of the inadequate environmental protection such as flue gas, dust, combustion chamber gas distribution is scientific and reasonable not, Btu utilization is abundant not enough, and energy-conserving and environment-protective level is not ideal enough, also has the more rising space according to the calorific value efficiency of organic compound combustion.
Summary of the invention
The object of the present invention is to provide a kind of weak point that can overcome existing power economized boiler and exist, combustion thermal efficiency, the boiler boosting efficiency of further raising power economized boiler, greatly reduce purifying and dedusting facility investment, the method and apparatus of the living beings second pyrolysis of heat can be made full use of.
In order to achieve the above object, technical scheme provided by the invention is as follows.
The method of living beings second pyrolysis, is characterized in that, comprising:
Step 1), by biomass thermal decomposition gasification process, obtains burning mixture;
Step 2) catalytic process is carried out to burning mixture, hydrocarbon larger for molecular weight is carried out cracking, obtains low-carbon (LC) molecule fuel gas;
Step 3) is burnt to low-carbon (LC) molecular gas or is collected;
In described step 1), reach the condition of 920 DEG C-990 DEG C in temperature under, anoxia condition thermal decomposition is carried out to living beings; Process also comprises dedusting and tapping process;
Described step 2) in, the catalyst that catalytic process uses is iron oxide, cupric oxide, zinc oxide or magnesian wherein one or more mixtures, and the temperature of catalytic process is 890 DEG C-1200 DEG C; Also comprise the drying to other gases, purification and purification process;
In described step 3), also comprise and use water to reclaim the heat that burning produces; Also comprise the discharge to gas-fired products and dust removal process.
Described living beings comprise trees, wild straw or like vegetable, agricultural crop straw or waste residue.
The operation principle of the method for living beings second pyrolysis of the present invention, manufacture a set of biomass catalyzing thermal cracking gas gasifying device, in the gasification of step 1), biomass material adds in the middle part of gasification furnace, through air (or oxygen) from the side gas port pass into, under the effect of high temperature, biomass material is transformed into CO, H
2, CH
4mixed combustible gas body, also have the larger hydrocarbon of number molecular weight, fuel gas is after purification, purifying, and gas is very clean, environmental protection.
Step 2) in, in order to improve hydrogen content, the calorific value of gasification of biomass and reduce tar content, effective way is in gasification, improve a temperature for gasifying medium, and another kind of method is that hydrocarbon larger for molecular weight is carried out cracking, obtains low-carbon (LC) molecule fuel gas; Add metal oxide catalyst, greatly improve biogas rate.
Step 3) is burnt to fuel gas; Produced fuel gas is sent to combustion chamber by pipeline, with the burner on even gas distributing pipeline, friction-type burning is carried out to boiler endothermic tube, gas clean-burningly can improve boiler endothermic system efficiency in combustion chamber simultaneously, and boiler afterheat is reclaimed the comprehensive cycle energy Land use systems being used for heating boiler, thus improve the whole efficiency of boiler.
The device of living beings second pyrolysis, comprises charging aperture, exhaust outlet, combustion chamber and slag-drip opening, and described charging aperture is connected with combustion chamber, and exhaust outlet is arranged at above combustion chamber, and slag-drip opening is arranged at below combustion chamber; Described combustion chamber comprises dry section, reducing zone, oxidation reaction zone, cloth headroom, catalyst bed and surplus heat collection device, dry section, reducing zone and oxidation reaction zone are positioned at below combustion chamber, dry section is connected with reducing zone, reducing zone is connected with oxidation reaction zone, gas distribution is spatially located at above dry section, catalyst bed is arranged at above gas distribution space, and surplus heat collection device is arranged at top, combustion chamber.
Side, described oxidation reaction zone is provided with close type air inlet, and oxidation reaction zone communicates with slag-drip opening through pipeline, and pipeline side is provided with thin type air inlet.
Described cloth headroom is that at least 10 burners carry out layout to arrange form arranged side by side more, and burner is because of the gas free from dust of use, without tar, so occur without clogging.
Described catalyst bed is provided with at least two-layer catalyst layer, and catalyst layer is netted.Catalyst bed side is also provided with air supply mouth, is provided with filter screen in air supply mouth.
The manufacturing process of catalyst layer iron oxide, cupric oxide, zinc oxide or magnesian wherein one or more mixed-metal oxides is added aluminium oxide make binding agent, first metal oxide is added alumina powder to mix, metal oxide is 40-60%, binding agent is 40-60%, per kilogram mixed powder adds the dilute sulfuric acid 0.3-0.6 kilogram of weight content 30-60%, be kneaded into dough the same, and then extrusion, reticulate.
Described surplus heat collection device comprises water tank, water pipe and steamdrum, and water tank is arranged at above catalyst bed, and water tank is connected with steamdrum through water pipe, and steamdrum is detachable, and steamdrum is also provided with insulating.
With upper combustion chamber because using the environmental protection gas of above-mentioned free from dust, smokeless, and burner carries out friction-type burning to boiler endothermic tube, so boiler furnace endothermic system does not have slagging scorification phenomenon, greatly improves the heat-transfer effect of boiler heating surface.
The device of above living beings second pyrolysis has superpower conversion system, starts heat transfer temperature low, and heat transfer rate is fast, and during work, the rate of rise is fast.
The waste heat of the device of above living beings second pyrolysis all can be recovered the comprehensive utilization such as heating for boiler.
The device of above living beings second pyrolysis is the conjunctive use of biomass catalyzing thermal cracking gasification and boiler, realizes the lifting of boiler whole efficiency.
The device of above living beings second pyrolysis comprises the various boiler of Verital coal-fired boiler, horizontal coal-fired boiler etc.
Below the effect describing the concrete all parts of device of living beings second pyrolysis is again as follows:
(1) device of living beings second pyrolysis.After biomass material enters biomass cracking gasification boiler, the chemical process in stove mainly comprises combustion reaction, pyrolysis and reduction reaction.Under high temperature and catalyst synergy, there is pyrolysis in most of living beings under anoxic conditions, thus produce CO, H
2, CH
4, C
nh
mdeng fuel gas.There is secondary response in high temperature reaction zone in fugitive constituent and gas phase tar, while raw material advances, shift coke, dust onto slag-draining device under catalyst action, and part coke enters gasification furnace by backflow after deduster and participates in reaction.By condensation, washing removing, the combustion gas after purification reaches the requirements such as industrial gas, home-use gas, generating.
(2) the cloth headroom, combustion chamber of device.The burner of combustion chamber carries out layout of beam line with the form that the many rows of even gas distributing pipeline are arranged side by side, and burner carries out friction-type burning to boiler endothermic tube, makes gas can Thorough combustion in combustion chamber, thus produces effect that is efficient, high heat.
(3) combustion chamber of device.The combustion chamber of device can not produce slagging scorification, reduces the heat-transfer effect of device heating surface.
(4) device body.For the boiler be connected with biomass gasification device, biomass combustible gas is used to burn, reach the environmental requirement of free from dust, smokeless, save artificial and maintenance cost, the air pressure pressurization time of biomass gasification boiler shortens more than one times, and the energy consumption of biomass gasification boiler own is low, fuel saving, than plain cylindrical furnace fuel saving 30%, boiler afterheat all can reclaim the comprehensive utilization such as heating for boiler.
Catalytic pyrolysis gasification installation is combined with boiler and runs, and produces accessory substance type, accessory substance growing amount, accessory substance composition as following table:
| Project | Detected value | National normal value | Remarks |
| Smoke dust discharge concentration | 28-39mg/Nm3 | 120mg/Nm3 | |
| Flue dust average emission speed | 0.009kg/N | 0.096kg/N | |
| SO2 concentration of emission | 10-14mg/Nm3 | 550mg/Nm3 | |
| SO2 mass rate of emission | 0.003kg/N | 0.739kg/N | |
| Discharged nitrous oxides concentration | 30-38mg/Nm3 | 240mg/Nm3 | |
| Nitrogen oxide evenly heat mass rate of emission | 0.008kg/N | 0.219kg/N | |
| Ringelman concentration | 0.5 grade | 1 grade |
Compared with prior art, the invention has the beneficial effects as follows: there is economy, material benefit, relative to conventional boiler direct economic benefit aspect, the economic benefit of this boiler is appreciable, chamber temperature is up to 1100-1200 DEG C, solve the problem that the direct burning of fire produces black smoke, effectively reduce flue dust and pernicious gas SO
2, NO
xdischarge, smoke abatement and dust control, makes every environmental protection and energy saving index be far superior to national standard, saves electric energy about more than 30%, easy to maintenance, saves maintenance cost.After adopting new combustion technology, biomass catalyzing thermal cracking gasification and unified boiler use the economic benefit substantially increasing boiler.
Accompanying drawing explanation
Fig. 1 is the structural representation sketch of the device of living beings second pyrolysis of the present invention.
Number in the figure and title as follows:
1, exhaust outlet, 2, band heat exchange cyclone dust collectors, 3, charging aperture, 4, charging motor, 5, blow vent, 6, dry section, 7, reducing zone, 8, oxidation reaction zone, 9, dredge type air inlet, 10, slag-drip opening, 11, deslagging motor, 12, close type air inlet, 13, cloth headroom, 14, catalyst bed, 15, air supply mouth, 16, water tank, 17, water pipe, 18, steamdrum.
Detailed description of the invention
In order to more detailed elaboration the present invention, below in conjunction with accompanying drawing, the present invention will be further described.
A method for living beings second pyrolysis, comprising:
Step 1), by living beings (wood fragments skin, cornstalk, cassava stalk or weeds) thermal cracking gasification process, obtains burning mixture, under reaching the condition of 920 DEG C-990 DEG C, carries out anoxia condition thermal decomposition to living beings in temperature; Process also comprises dedusting and tapping process; Biomass catalyzing thermal cracking gas gasifying device, in gasification, biomass material adds in the middle part of gasification furnace, through air (or oxygen) from the side gas port pass into, under the effect of high temperature and catalyst, biomass material is transformed into CO, H
2, CH
4mixed combustible gas body, fuel gas is through purification, after purifying, and gas is very clean, environmental protection.
Step 2) catalytic process is carried out to burning mixture, hydrocarbon larger for molecular weight is carried out cracking, obtains low-carbon (LC) molecule fuel gas; In order to improve hydrogen content, the calorific value of biomass gasified gas and reduce tar content, a kind of effective way is in gasification, improve the temperature of gasifying medium, and adds metal oxide catalyst, greatly improves biogas rate.
Step 3) is burnt to low-carbon (LC) molecule fuel gas or collects; Produced fuel gas is sent to combustion chamber by pipeline, with the burner on even gas distributing pipeline, friction-type burning is carried out to boiler endothermic tube, gas clean-burningly can improve boiler endothermic system efficiency in combustion chamber simultaneously, and boiler afterheat is reclaimed the comprehensive cycle energy Land use systems being used for heating boiler, thus improve the whole efficiency of boiler; Can also collect low-carbon (LC) molecule, be applied to other production processes.
Step 2) in, the catalyst that described catalytic process uses is iron oxide, aluminium oxide, cupric oxide, zinc oxide or magnesian wherein one or more mixtures, the temperature of catalytic process is 890 DEG C-1200 DEG C, also comprises the drying to other, purification and purification process.The manufacturing process of catalyst layer iron oxide, cupric oxide, zinc oxide or magnesian wherein one or more mixed-metal oxides is added aluminium oxide make binding agent, first metal oxide is added alumina powder to mix, metal oxide is 40-60%, binding agent is 40-60%, per kilogram mixed powder adds the dilute sulfuric acid 0.3-0.6 kilogram of weight content 30-60%, be kneaded into dough the same, and then extrusion, reticulate.
In step 3), also comprise and use water to reclaim the heat that burning produces; Also comprise the discharge to gas-fired products and dust removal process.
The device of living beings second pyrolysis, comprises charging aperture 3, exhaust outlet 1, combustion chamber and slag-drip opening 10, and described charging aperture 3 is connected with combustion chamber, and exhaust outlet 1 is arranged at above combustion chamber, and slag-drip opening 10 is arranged at below combustion chamber; Described combustion chamber comprises dry section 6, reducing zone 7, oxidation reaction zone 8, cloth headroom 13, catalyst bed 14 and surplus heat collection device, dry section 6, reducing zone 7 and oxidation reaction zone 8 are positioned at below combustion chamber, dry section 6 is connected with reducing zone 7, reducing zone 7 is connected with oxidation reaction zone 8, cloth headroom 13 is positioned at above dry section 6, catalyst bed 14 is arranged at above cloth headroom 13, and surplus heat collection device is arranged at top, combustion chamber.
Side, described oxidation reaction zone 8 is provided with close type air inlet 12, and oxidation reaction zone 8 communicates with slag-drip opening 10 through pipeline, and pipeline side is provided with thin type air inlet 9; Close type air inlet 12 arranges the outside with oxidation reaction zone 8 and pipeline, is the pipe arrangement form of intensity, and dredge the opposite side that type air inlet 9 is arranged at pipeline, quantity is less than the quantity of close type air inlet 12.
Described cloth headroom 13 is that at least 10 burners carry out layout to arrange form arranged side by side more.
Described catalyst bed 14 is provided with at least two-layer catalyst layer, and catalyst layer is netted; Catalyst bed 14 side is also provided with air supply mouth 15, is provided with filter screen in air supply mouth 15.
Described surplus heat collection device comprises water tank 16, water pipe 17 and steamdrum 18, and water tank 16 is arranged at above catalyst bed 14, and water tank 16 is connected with steamdrum 18 through water pipe 17, and steamdrum 18 is detachable, and steamdrum 18 is also provided with insulating.
The manufacturing process of catalyst layer iron oxide, cupric oxide, zinc oxide or magnesian wherein one or more mixed-metal oxides is added aluminium oxide make binding agent, first metal oxide is added alumina powder to mix, metal oxide is 40-60%, binding agent is 40-60%, per kilogram mixed powder adds the dilute sulfuric acid 0.3-0.6 kilogram of weight content 30-60%, be kneaded into dough the same, and then extrusion, reticulate.
As shown in Figure 1, the device of living beings second pyrolysis of the present invention, comprises biomass catalyzing pyrolysis gasification device, biomass boiler.Charging aperture 3 drives raw material propeller that raw material is sent to combustion chamber by charging motor 4, and combustion chamber comprises dry section 6, reducing zone 7, oxidation reaction zone 8; Raw material carries out oxidation reaction in oxidation reaction zone 8, produces a large amount of first fuel gas; The lime-ash of raw material is discharged from the slag-drip opening 10 driven by deslagging motor 11.The reverse top by raw material district of first fuel gas, and enter cloth headroom 13 at blow vent 5 and carry out gas distribution.First fuel gas is evenly by the catalyst bed 14 of removable switching, and produce catalytic reaction, all tar and the cracking again of uncracked sufficient gas, enhance the calorific value of gas.Mix by the heat of gas and air supply mouth 15 and play oxidation reaction, radiate a large amount of heats here, by the mode uniform scratch burning continuously of heat supply, the endothermic system efficiency of boiler improves rapidly, also add the speed of gasification, improve the whole efficiency of boiler.By the water tank 16 of uniform scratch combustion heating boiler, make water tank 16 produce steam and enter into steamdrum 18 through water pipe 17.Gas after burning, mainly carbon dioxide and water, by the outer row of the exhaust outlet 1 of boiler.Installed band heat exchange cyclone dust collectors 2 at boiler exhaust mouth 1, its effect is the cloth headroom 13 making heat turn back to air inlet, enhances the biomass catalyzing cracking reaction of raw material, thus improves the reaction of oxidation.Boiler chimney tail gas reaches the Eligibility requirements of environmental protection after being got rid of by such dedusting.Whole gasification of biomass, first fuel gas carry out uniform friction-type burning boiler, the tail gas of boiler chimney reclaims through dedusting and is used for biomass gasification reaction, the rate of gasification of whole gasification improves, waste heat recovery, there is no the outer row of heat, the endothermic system efficiency of boiler greatly improves, whole implementation process can realize the effect of evenly fast Thorough combustion gas, and heat utilization efficiency is high, reach efficient, science, environmental protection target.
Application Example 1
The efficiency of combustion of the device of living beings second pyrolysis of the present invention is significantly promoted, without tar, and the gas free from dust after burning, without carbon dioxide etc., after Wuming County Pharma Inc. uses 4 tons of boilers experiments, fuel cost directly declines 30%; Without the need to supporting any environmental protection equipment, facility, inorganic agent, environmental protection cost declines 100%; Automatic management, saves manpower; Comprehensively reduce costs more than 35%, boiler whole efficiency brings up to 93% from 75%, and boiler chimney is not seen and smoldered, and stack effluents index is significantly less than the standard that country limits! Can be rated as the boiler can not wanting chimney.
Claims (6)
1. a method for living beings second pyrolysis, is characterized in that, comprising:
Step 1), by biomass thermal decomposition gasification, obtains burning mixture;
Step 2) catalytic process is carried out to burning mixture, hydrocarbon larger for molecular weight is carried out cracking, obtains low-carbon (LC) molecule fuel gas;
Step 3) is burnt to low-carbon (LC) molecule fuel gas or collects;
In described step 1), reach the condition of 920 DEG C-990 DEG C in temperature under, anoxia condition thermal decomposition is carried out to living beings; Also comprise dedusting and tapping process;
Described step 2) in, the catalyst that catalytic process uses is iron oxide, cupric oxide, zinc oxide or magnesian wherein one or more mixtures, and the temperature of catalytic process is 890 DEG C-1200 DEG C; Also comprise the drying to other gases, purification and purification process;
In described step 3), also comprise and use water to reclaim the heat that burning produces; Also comprise the discharge to gas-fired products and dust removal process;
Described living beings comprise trees, wild straw or like vegetable, agricultural crop straw or waste residue.
2. the device of living beings second pyrolysis, comprise charging aperture (3), exhaust outlet (1), combustion chamber and slag-drip opening (10), it is characterized in that: described charging aperture (3) is connected with combustion chamber, exhaust outlet (1) is arranged at above combustion chamber, and slag-drip opening (10) is arranged at below combustion chamber; Described combustion chamber comprises dry section (6), reducing zone (7), oxidation reaction zone (8), cloth headroom (13), catalyst bed (14) and surplus heat collection device, dry section (6), reducing zone (7) and oxidation reaction zone (8) are positioned at below combustion chamber, dry section (6) is connected with reducing zone (7), reducing zone (7) is connected with oxidation reaction zone (8), cloth headroom (13) is positioned at dry section (6) top, catalyst bed (14) is arranged at top, cloth headroom (13), and surplus heat collection device is arranged at top, combustion chamber.
3. the device of living beings second pyrolysis according to claim 2, it is characterized in that: described oxidation reaction zone (8) side is provided with close type air inlet (12), oxidation reaction zone (8) communicates with slag-drip opening (10) through pipeline, and pipeline side is provided with thin type air inlet (9).
4. the device of living beings second pyrolysis according to claim 2, is characterized in that: described cloth headroom (13) carries out layout at least 10 burners to arrange form arranged side by side more.
5. the device of living beings second pyrolysis according to claim 2, is characterized in that: described catalyst bed (14) is provided with at least two-layer catalyst layer, and catalyst layer is netted; Catalyst bed (14) side is also provided with air supply mouth (15), and air supply mouth is provided with filter screen in (15).
6. the device of living beings second pyrolysis according to claim 2, it is characterized in that: described surplus heat collection device comprises water tank (16), water pipe (17) and steamdrum (18), water tank (16) is arranged at catalyst bed (14) top, water tank (16) is connected with steamdrum (18) through water pipe (17), steamdrum (18) is for detachable, and steamdrum (18) is also provided with insulating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310598950.4A CN103557517B (en) | 2013-11-25 | 2013-11-25 | The method and apparatus of living beings second pyrolysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310598950.4A CN103557517B (en) | 2013-11-25 | 2013-11-25 | The method and apparatus of living beings second pyrolysis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103557517A CN103557517A (en) | 2014-02-05 |
| CN103557517B true CN103557517B (en) | 2016-01-06 |
Family
ID=50011835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310598950.4A Active CN103557517B (en) | 2013-11-25 | 2013-11-25 | The method and apparatus of living beings second pyrolysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103557517B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105295969A (en) * | 2014-07-24 | 2016-02-03 | 北京南亚节能技术研究院 | Straw bio-energy preparation method |
| CN104807187B (en) * | 2015-04-21 | 2018-02-13 | 浙江特富锅炉有限公司 | A kind of biomass-burning heat conducting oil boiler |
| CN106855232A (en) * | 2015-12-08 | 2017-06-16 | 李鸣 | A kind of device and technique that allow biomass castoff to refine fuel gas supply boiler heat source co-production charcoal oil |
| CN105642655B (en) * | 2016-01-29 | 2018-11-13 | 中能恒源环保科技有限责任公司 | Life refuse processing method, device and engineering truck |
| CN109715569A (en) * | 2016-07-15 | 2019-05-03 | 郑毓玲 | By glowing and catalyst treatment excreta |
| CN108384585B (en) * | 2018-04-26 | 2024-05-17 | 南京林业大学 | Self-supplied thermal cracking device for gasifying tar in combustible gas by biomass fluidized bed |
| CN109433115B (en) * | 2018-09-27 | 2023-11-21 | 昆明理工大学 | Device and method for pyrolyzing biomass and purifying zinc oxide |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3503603A1 (en) * | 1985-02-02 | 1986-08-07 | Cornel. Schmidt GmbH & Co KG, 5090 Leverkusen | Furnace installation |
| US4947803A (en) * | 1989-05-08 | 1990-08-14 | Hri, Inc. | Fludized bed reactor using capped dual-sided contact units and methods for use |
| CN1954055A (en) * | 2003-11-04 | 2007-04-25 | Iti有限公司 | Gasification of |
| DE102006050603A1 (en) * | 2006-10-26 | 2008-04-30 | Ständer, Wolfgang, Dr.Ing. | Gasifying biomass comprises compression in a crammer screw press, processing in a shredder screw press and partial combustion in a gasification chamber |
| CN102199449A (en) * | 2011-04-22 | 2011-09-28 | 中国科学院广州能源研究所 | Method for producing gas by oxygen enrichment and thermolysis of organic solid wastes |
| CN102777890A (en) * | 2012-08-16 | 2012-11-14 | 合肥工业大学 | Biomass fuel boiler |
| CN203687019U (en) * | 2013-11-25 | 2014-07-02 | 黄荣胜 | Biomass secondary cracking device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8834834B2 (en) * | 2011-07-21 | 2014-09-16 | Enerkem, Inc. | Use of char particles in the production of synthesis gas and in hydrocarbon reforming |
-
2013
- 2013-11-25 CN CN201310598950.4A patent/CN103557517B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3503603A1 (en) * | 1985-02-02 | 1986-08-07 | Cornel. Schmidt GmbH & Co KG, 5090 Leverkusen | Furnace installation |
| US4947803A (en) * | 1989-05-08 | 1990-08-14 | Hri, Inc. | Fludized bed reactor using capped dual-sided contact units and methods for use |
| CN1954055A (en) * | 2003-11-04 | 2007-04-25 | Iti有限公司 | Gasification of |
| DE102006050603A1 (en) * | 2006-10-26 | 2008-04-30 | Ständer, Wolfgang, Dr.Ing. | Gasifying biomass comprises compression in a crammer screw press, processing in a shredder screw press and partial combustion in a gasification chamber |
| CN102199449A (en) * | 2011-04-22 | 2011-09-28 | 中国科学院广州能源研究所 | Method for producing gas by oxygen enrichment and thermolysis of organic solid wastes |
| CN102777890A (en) * | 2012-08-16 | 2012-11-14 | 合肥工业大学 | Biomass fuel boiler |
| CN203687019U (en) * | 2013-11-25 | 2014-07-02 | 黄荣胜 | Biomass secondary cracking device |
Non-Patent Citations (1)
| Title |
|---|
| 木薯渣热解气化的研究;岳金方;《中国学位论文全文数据库》;20071226;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103557517A (en) | 2014-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103557517B (en) | The method and apparatus of living beings second pyrolysis | |
| CN101134568A (en) | Activated char activating devices and methods thereof | |
| CN112919760B (en) | Municipal sludge and kitchen waste cooperative treatment method and device for household garbage | |
| CN106949480A (en) | A kind of pyrogenation incinerator | |
| CN105276583A (en) | Mixed combustion device and combustion equipment utilizing same | |
| CN106322439A (en) | Normal-pressure smoke-free environment-friendly combustion furnace | |
| CN209229738U (en) | A kind of novel household garbage low temperature pyrogenation processing unit | |
| CN101962558B (en) | Biomass combustible gas high-temperature oxygen-free reinforced dry-distillation pyrolysis plant | |
| CN203687019U (en) | Biomass secondary cracking device | |
| CN105038820A (en) | Novel carbonization furnace for producing charcoal | |
| CN214619560U (en) | Multi-class garbage comprehensive cooperative processing device for urban garbage processing | |
| CN102052691A (en) | Direct-fired half-gasification downdraft type full-gasification multifunctional straw furnace | |
| CN213060745U (en) | Self-heating type carbon heat co-production biomass pyrolysis equipment | |
| CN202148287U (en) | Biomass dry distillation carbon, gas, oil and liquid co-production centralized gas supply system | |
| CN204358731U (en) | City low-temperature carbonization burning domestic garbage flue gas innocuity disposal system | |
| CN106987276A (en) | A kind of method of system and producing synthesis gas based on predrying progress life refuse high temperature gasification producing synthesis gas | |
| CN104879788A (en) | Energy-saving efficient environment-friendly air returning boiler | |
| CN201636846U (en) | Solid fuel heat-storage type high-temperature air combustion gasification furnace | |
| CN206637620U (en) | A kind of pyrogenation incinerator | |
| CN206916082U (en) | A kind of system based on predrying progress life refuse high temperature gasification producing synthesis gas | |
| CN206094168U (en) | Burning furnace utensil is fired in smokeless environmental protection of ordinary pressure | |
| CN101487627A (en) | System for heating large heat receiver by biological gas | |
| CN201215384Y (en) | Coal boiler without smoke | |
| CN213931440U (en) | Industrial energy-saving environment-friendly furnace | |
| CN204693511U (en) | A kind of energy-saving high-efficiency environment-friendly type air return stove |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |