CN106010651A - Tanning waste treatment device and treatment technique using device - Google Patents
Tanning waste treatment device and treatment technique using device Download PDFInfo
- Publication number
- CN106010651A CN106010651A CN201610349476.5A CN201610349476A CN106010651A CN 106010651 A CN106010651 A CN 106010651A CN 201610349476 A CN201610349476 A CN 201610349476A CN 106010651 A CN106010651 A CN 106010651A
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- pyrolysis
- flue gas
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- 238000000034 method Methods 0.000 title claims abstract description 71
- 239000002699 waste material Substances 0.000 title claims abstract description 26
- 239000007789 gas Substances 0.000 claims abstract description 104
- 238000000197 pyrolysis Methods 0.000 claims abstract description 88
- 239000010985 leather Substances 0.000 claims abstract description 52
- 238000002309 gasification Methods 0.000 claims abstract description 36
- 238000000746 purification Methods 0.000 claims abstract description 28
- 239000010802 sludge Substances 0.000 claims abstract description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 50
- 239000003546 flue gas Substances 0.000 claims description 48
- 230000008569 process Effects 0.000 claims description 47
- 239000000567 combustion gas Substances 0.000 claims description 28
- 239000002245 particle Substances 0.000 claims description 28
- 238000012545 processing Methods 0.000 claims description 24
- 238000007599 discharging Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 11
- 238000005201 scrubbing Methods 0.000 claims description 11
- 239000002826 coolant Substances 0.000 claims description 9
- 239000000498 cooling water Substances 0.000 claims description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000006227 byproduct Substances 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 4
- 239000002737 fuel gas Substances 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 235000019504 cigarettes Nutrition 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000010801 sewage sludge Substances 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 4
- 239000000428 dust Substances 0.000 claims 1
- 239000003517 fume Substances 0.000 abstract 3
- 238000001816 cooling Methods 0.000 abstract 2
- 239000011651 chromium Substances 0.000 description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 7
- 230000007613 environmental effect Effects 0.000 description 7
- 229910052804 chromium Inorganic materials 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 238000002679 ablation Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000007707 calorimetry Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 206010002660 Anoxia Diseases 0.000 description 1
- 241000976983 Anoxia Species 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 230000007953 anoxia Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- BFGKITSFLPAWGI-UHFFFAOYSA-N chromium(3+) Chemical compound [Cr+3] BFGKITSFLPAWGI-UHFFFAOYSA-N 0.000 description 1
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
- -1 steam Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/80—Other features with arrangements for preheating the blast or the water vapour
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
- C10J2200/152—Nozzles or lances for introducing gas, liquids or suspensions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0946—Waste, e.g. MSW, tires, glass, tar sand, peat, paper, lignite, oil shale
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/12—Heating the gasifier
- C10J2300/1207—Heating the gasifier using pyrolysis gas as fuel
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/12—Heating the gasifier
- C10J2300/1215—Heating the gasifier using synthesis gas as fuel
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
- C10J2300/1615—Stripping
-
- 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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Gasification And Melting Of Waste (AREA)
- Incineration Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a tanning waste treatment device and a treatment technique using the device. The treatment device comprises a pyrolysis gasification furnace, a pyrolyzing furnace, a combustible gas purification system and a fume purification system, wherein the pyrolysis gasification furnace and pyrolyzing furnace are respectively a double-layer rotary kiln; the pyrolysis gasification furnace comprises a scrap leather feed port, a scrap ash discharge port, a first high-temperature crude combustible gas outlet and a first high-temperature fume outlet; the pyrolyzing furnace comprises a leather sludge feed port, a sludge ash discharge port, a second high-temperature crude combustible gas outlet and a second high-temperature fume outlet; the outer cylinder of the pyrolysis gasification furnace and the outer cylinder of the pyrolyzing furnace are provided with at least one combustible gas burner; each combustible gas burner comprises a central sprayer, an internal ring sprayer, an external ring sprayer and a cooling component which are coaxially sheathed from inside to outside; the cooling component is annularly arranged on the outer side of the bottom end of the external ring sprayer; and a cyclone is respectively additionally arranged in the central sprayer and external ring sprayer. The treatment device disclosed by the invention enhances the energy utilization efficiency and reduces the heat loss.
Description
Technical field
The present invention relates to the processing means of a kind of tanning waste and contain its process technique.
Background technology
Leather industry is one of conventional industries of China, has a long history.Owing to leather has uniqueness
Sanitation performance and mechanical property, be particularly suitable for wearing, the favor of use, extremely people.Comprise process hides work
Industry is not only the pillar industry in light industry at interior leather industry, and is export-oriented industry,
Export value ranks first of light industry every profession and trade for years, and foreign exchange earning is only second to petroleum chemical industry.
Tanning waste is the debirs containing heavy metal chromium, mainly includes leather mud and leather particle
Deng, it is put into " National Hazard refuse " register.China is leather big producing country, the yield of major product
The most at the forefront in the world.The annual tanning waste produced is more than million tons, it would be highly desirable to process.Particularly chromium from
Son has suitable toxicity, and hexavalent chromium is higher than the toxicity of trivalent chromic ion 100 times, can cause many
Plant the disease even generation of cancer.China's existing leather method for sludge treatment mainly has landfill, heap at present
Fertilizer is agricultural and burns.Easy polluted underground water environment during landfill, discharge a large amount of methane isothermal chamber gas.Compost
Agricultural, there is the pollution problem to soil of the heavy metal component in mud.Can be fast by burning disposal
Speed and make mud reach minimizing largely, make use of again the energy in mud；But, before burning
It is generally required to mud is dried process, not only consumed energy, but also a large amount of refractory reason can be produced
Stench tail gas；Additionally, substantial amounts of SO can be discharged during sludge incineration2And NOxDeng pollutant, but also meeting
Produce the organic pollutions such as two English.More seriously, owing to leather-making mud containing trivalent chromium element,
Burning in oxidizing atmosphere, trivalent chromium will become the Cr VI of severe toxicity, can cause even more serious ring
Environment pollution.In sum, current China is in the urgent need to carrying out debirs such as tanning wastes on a large scale
Effective, harmless process and the technology of recycling.
Occur in that the methods such as pyrolysis, gasification process debirs in recent years.Pyrolysis is at complete anoxia condition
Lower material is heated the course of reaction decomposed.Gasification refer to Organic substance in specific equipment, necessarily
Make organic matter and gasifying agent (such as steam, air or oxygen etc.) that a series of chemistry occurs at temperature and pressure
Reaction, is containing CO, H by transforming solid organic matter2、CH4Process Deng fuel gas.Pyrolysis with
Gasification is to carry out under high temperature and reproducibility (or anaerobic) atmosphere, will not generate SO2、NOxWith
The pollutant such as two English, more clean environmental protection.But, the existing process technique for tanning waste
All there is process route length, treatment effeciency is the highest, capacity usage ratio is low defect, be exemplified below:
The Chinese invention patent application of Application No. CN 201510081866.4 discloses a kind of classification pyrolysis
Gasification system and application, the processing method of tanning waste.Described classification pyrolysis gasification system mainly wraps
Include: the first rotary kiln, the second rotary kiln, dual firing chamber and cleaning system etc..Although this patent provides one
Plant the method that the debirs such as tanning waste can be carried out harmless treatment and recycling, but it sets
The class that makes preparations for sowing is many, and process route is longer, and the use of the equipment such as dual firing chamber exposes the shortcoming that it is inefficient.
Summary of the invention
The technical problem to be solved is to realize the extensive effective, harmless of multiple tanning waste
Change process and recycling, and provide the processing means of a kind of tanning waste and contain its place's science and engineering
Skill.The processing means that the present invention the provides design by special gas nozzle structure, it is achieved that combustion gas exists
Efficient burning in the urceolus of double-layer back rotary kiln, improves capacity usage ratio, reduces heat loss, optimizes
Process route, and reduce further cost.The process PROCESS FOR TREATMENT amount that the present invention provides is big, cost
Low, efficiency is high, safety and environmental protection and flexible operation.
The present inventor is found by years of researches, and common rotary kiln easily occurs burning and do not fills
The phenomenon divided, in order to solve this technical difficulty, those skilled in the art increase burning the most further
The equipment processed, such as, increase a dual firing chamber, thus avoid producing poisonous and harmful substance, but this is again
The defect that process route length, energy consumption are big can be brought.Therefore, the combustion apparatus that a kind of efficiency of combustion is high is developed
For a process difficult problem for tanning waste most important.
And inventor is surprised to find that double-layer back rotary kiln as bringing above-mentioned technical breakthrough,
, the outer tube structure of double-layer back rotary kiln is the most sufficiently complex, and combustion gas is difficult to directly burn, specifically wherein
Difficult point is embodied in: all many-sides such as flame control, temperature field and flow field regulation and control have weight for combustion process
Affect.
Specifically, the present invention is to solve above-mentioned technical problem by following technical solution:
The invention provides the processing means of a kind of tanning waste, its feature is, described process dress
Put and include a pyrolysis gasification furnace, a pyrolysis oven, a gas-purification system and a flue gas purification system；Described
Pyrolysis gasification furnace and described pyrolysis oven be double-layer back rotary kiln, described double-layer back rotary kiln includes an inner core
With a urceolus, described pyrolysis gasification furnace include a leather particle charging aperture, a particle lime-ash discharging opening,
The one first thick gas outlet of high temperature and the outlet of one first high-temperature flue gas, described pyrolysis oven includes a leather mud
Charging aperture, a mud lime-ash discharging opening, the one second thick gas outlet of high temperature and the outlet of one second high-temperature flue gas；
Several combustion gas are also distributed on the urceolus of described pyrolysis gasification furnace and on the urceolus of described pyrolysis oven
Nozzle, described gas nozzle include a most sheathed central jets, an internal ring shower nozzle, one
Outer shroud shower nozzle and a cooling-part, described cooling-part ring is located at the Basolateral of described outer shroud shower nozzle, institute
State in central jets, in described outer shroud shower nozzle, be respectively equipped with a cyclone；
The described first thick gas outlet of high temperature and the described second thick gas outlet of high temperature are all clean with described combustion gas
Change system is connected, described first high-temperature flue gas outlet and described second high-temperature flue gas outlet all with described cigarette
Gas cleaning system is connected.
The double-layer back rotary kiln that the present invention uses can realize producing continuously, and treating capacity is big.
It is preferred that be distributed respectively on the urceolus of described pyrolysis gasification furnace and on the urceolus of described pyrolysis oven
1～10 gas nozzle.Described gas nozzle is arranged on double-layer back rotary kiln according to this area usual manner is uniform
Shaft length direction on, or according to the demand in temperature field, non-uniform Distribution is at the stove of double-layer back rotary kiln
On body length direction, such as: the intensive layout in place that temperature requirement is high.
It is preferred that the bottom face of the bottom face of described central jets and described internal ring shower nozzle is relative to outside described
The bottom face of ring spray head is that gradual indentation is arranged, i.e. the bottom face of described central jets is relative to described
The indent of the bottom face of outer shroud shower nozzle, more than the bottom face of described internal ring shower nozzle relative to described outer ring spray
The indent of the bottom face of head.Setting and being combined with of cyclone of this indent beneficially improve flameholding
Property and mixing efficiency.
In the present invention, described cyclone is cyclone commonly used in the art.
It is preferred that described cooling-part is a circulating line being provided with cooling water inlet and coolant outlet.
This structure can protect gas nozzle from high temperature ablation, improves service life.
The gas nozzle design by coaxial triple channel structure that the present invention provides, and cooling-part and rotation
The setting of stream device, the flame successfully solving nozzle controls and the irrational problem of thermo parameters method, nozzle
Life-span is long, good mixing effect, and regulation and control can realize fully burning flexibly, and high temperature is reasonably distributed, and ensures
The sufficient holdup time, substantially increase efficiency of combustion.
It is preferred that described leather particle charging aperture, described particle lime-ash discharging opening and described first high temperature are thick
Gas outlet is arranged on the inner core of described pyrolysis gasification furnace, and described first high-temperature flue gas outlet is arranged on institute
State on the urceolus of pyrolysis gasification furnace.
It is preferred that described leather sludge inlet, described mud lime-ash discharging opening and described second high temperature are thick
Gas outlet is arranged on the inner core of described pyrolysis oven, and described second high-temperature flue gas outlet is arranged on described heat
Solve on the urceolus of stove.
It is preferred that described pyrolysis gasification furnace and described pyrolysis oven all include an air line, described air hose
Road is connected with described gas nozzle, for carrying air to described central jets and described outer shroud shower nozzle.
It is preferred that described gas-purification system also includes a clean gas outlet, and one first cooling water
Import and one first steam (vapor) outlet.Described first coolant outlet and described first steam (vapor) outlet use is set
In byproduct steam.Described clean gas outlet is preferably comprised a clean gas collection port and a cleaning combustion
Circulation port in gas.Described clean gas collection port is for by combustion gas guiding system, for other purposes, example
Such as generating.In described clean gas, circulation port is the most also connected with described gas nozzle, for institute
State delivery of fuel gas in internal ring shower nozzle, provide heat for double-layer back rotary kiln.Circulation port in described clean gas
Arrange again to import to be passed through in double-layer back rotary kiln by prepared a part of clean gas and burn, for
Pyrolytic gasification process provides heat, and this greatly reduces system energy consumption.
It is preferred that described flue gas purification system also includes an exhanst gas outlet, one second cooling water inlet and
Second steam (vapor) outlet.The by-product that is provided for of described second coolant outlet and described second steam (vapor) outlet steams
Vapour.
It is preferred that described gas-purification system include chilling tower, neutralize reaction tower, sack cleaner,
One or more in air-introduced machine and scrubbing tower, more preferably for be sequentially connected in series chilling tower, neutralize reaction tower,
Sack cleaner, air-introduced machine and scrubbing tower；Described flue gas purification system be preferably comprised chilling tower, in
With one or more in reaction tower, sack cleaner, air-introduced machine and scrubbing tower, more preferably for go here and there successively
The chilling tower of connection, neutralization reaction tower, sack cleaner, air-introduced machine and scrubbing tower.Wherein, described urgency
Cold tower, neutralization reaction tower, sack cleaner, air-introduced machine and scrubbing tower are this area conventional equipment.
Present invention also offers the process technique of a kind of tanning waste, its feature is, it uses above-mentioned
Processing means carry out, described gas nozzle respectively by described internal ring shower nozzle provide combustion gas, by described
Central jets and described outer shroud shower nozzle provide air, and described process technique comprises the steps:
(1) by leather particle charging to the inner core of described pyrolysis gasification furnace, it is pyrolyzed, gasifies, obtain high
The thick combustion gas of temperature, high-temperature flue gas and particle lime-ash；
(2) by leather sewage sludge feed to described pyrolysis oven inner core in, pyrolysis, obtain the thick combustion gas of high temperature,
High-temperature flue gas and mud lime-ash；
(3) it is transported to described gas-purification system after thick for high temperature combustion gas being merged, obtains clean gas；Will
High-temperature flue gas is transported to described flue gas purification system after merging, and obtains flue gas.
In the present invention, described tanning waste mainly includes leather mud and leather particle etc..Described
Leather mud is the leather mud that this area is conventional, refers generally to what sewage in leather making process produced after treatment
Biochemical sludge, moisture content about 40% after pretreatment, mud dry base heat value about 10MJ/kg；Described leather
Particle is the leather particle that this area is conventional, refers generally to leather shavings and the leftover bits and pieces produced in leather making process
Deng, moisture content about 50%, dry base heat value about 13MJ/kg.
In step (1) and (2), described charging is carried out according to this area usual manner, preferably connects
Continuous charging.
In step (1), when processing leather particle, the condition of described pyrolysis can refer to this area
The condition of conventional pyrolysis, the preferred following condition of the present invention: described pyrolysis is preferably in reducing atmosphere or nothing
Carry out under oxygen atmosphere；The temperature of described pyrolysis preferably more than 800 DEG C, is more preferably 800～1200 DEG C；
The time of described pyrolysis is preferably 10min-120min.Described reducing atmosphere or oxygen-free atmosphere are this
Reducing atmosphere that field is conventionally referred or oxygen-free atmosphere, preferably nitrogen, carbon dioxide, an oxidation
The atmosphere of one or more gases in carbon, hydrogen and methane.
In step (2), when processing leather mud, the condition of described pyrolysis can refer to this area
The condition of conventional pyrolysis, the preferred following condition of the present invention: described pyrolysis is preferably in reducing atmosphere or nothing
Carry out under oxygen atmosphere；The temperature of described pyrolysis preferably more than 600 DEG C, is more preferably 600～1000 DEG C；
The time of described pyrolysis is preferably 10min-120min.Described reducing atmosphere or oxygen-free atmosphere are this
Reducing atmosphere that field is conventionally referred or oxygen-free atmosphere, preferably nitrogen, carbon dioxide, an oxidation
The atmosphere of one or more gases in carbon, hydrogen and methane.
In step (1) and (2), the temperature of the thick combustion gas of high temperature is that this area is conventional, generally 600～1000 DEG C.
The temperature of high-temperature flue gas is that this area is conventional, generally 900～1200 DEG C.
In the present invention, it is preferred that a part of described clean gas is imported in described gas nozzle, pass through
Combustion process provides heat for pyrolytic process.The amount of clean gas described in a described part is according to raw material kind
The parameter determination such as class, physical property, generally accounts for the 30%-80% of described clean gas, and described percentage ratio is body
Long-pending percentage ratio.
Without prejudice to the field on the basis of common sense, above-mentioned each optimum condition, can combination in any, obtain this
Invent each preferred embodiments.
Agents useful for same of the present invention and raw material are the most commercially.
The most progressive effect of the present invention is:
1, using the process PROCESS FOR TREATMENT tanning waste of the present invention, final solid product is that solid gives up
Slag, without organic substance, it is simple to process and reclaim high chromium concentration therein；Final gaseous product is for steaming
Vapour and high-quality gas, can be used for the aspects such as generating.
2, the inventive method makes tanning waste react under high temperature and reproducibility or oxygen-free atmosphere,
Tar, SO will not be generated2、NOxWith the pollutant such as two English, clean environmental protection.
3, present invention process recyclable high-purity C r2O3, it is expected to thoroughly solve Cr in tanning waste dirty
A difficult problem for dye.
4, the joint processing system of particular device of utilizing that the present invention provides can be organic to tanning waste etc.
Refuse carries out harmless treatment and recycling continuously efficient, extensive, and whole system is applied widely,
Operating flexibility is strong, can operate continuously and large-scale production, for the debirs such as tanning waste efficiently and
Environmental protection treatment explores a new approach, has significant economy and environmental benefit, meets China's development and follows
Ring economy and the demand of Ecological Industrial.
Accompanying drawing explanation
Fig. 1 is processing means and the process chart of the embodiment of the present invention 1.
Fig. 2 is the structural representation of the gas nozzle of the embodiment of the present invention 1, wherein, and shower nozzle centered by 1,
2 is internal ring shower nozzle, and 3 is outer shroud shower nozzle, and 4 is cooling-part, and 5 is cyclone.
Detailed description of the invention
Further illustrate the present invention below by the mode of embodiment, but the most therefore limit the present invention to
Among described scope of embodiments.The experimental technique of unreceipted actual conditions in the following example, according to often
Rule method and condition, or select according to catalogue.
Embodiment 1
As it is shown in figure 1, the processing means of tanning waste that the present embodiment provides include a pyrolysis gasification furnace,
One pyrolysis oven, a gas-purification system and a flue gas purification system；Described pyrolysis gasification furnace and described heat
Solving stove and be double-layer back rotary kiln, described pyrolysis gasification furnace includes a leather particle charging aperture, a particle ash
Slag discharging opening, the one first thick gas outlet of high temperature and the outlet of one first high-temperature flue gas, described pyrolysis oven includes
One leather sludge inlet, a mud lime-ash discharging opening, the one second thick gas outlet of high temperature and one second are high
Temperature exhanst gas outlet；
5 gas nozzles are also distributed on the urceolus of described pyrolysis gasification furnace and on the urceolus of described pyrolysis oven,
As in figure 2 it is shown, described gas nozzle includes the most sheathed central jets 1, internal ring
Shower nozzle 2, one outer shroud shower nozzle 3 and a cooling-part 4, described cooling-part 4 ring is located at described outer ring spray
The Basolateral of 3, in described central jets 1, is respectively equipped with an eddy flow in described outer shroud shower nozzle 3
Device 5, described gas nozzle provides combustion gas by described internal ring shower nozzle 2 respectively, by described central jets
1 and described outer shroud shower nozzle 3 air is provided；
The described first thick gas outlet of high temperature and the described second thick gas outlet of high temperature are all clean with described combustion gas
Change system is connected, described first high-temperature flue gas outlet and described second high-temperature flue gas outlet all with described cigarette
Gas cleaning system is connected.
The double-layer back rotary kiln that the present embodiment uses includes inner core and urceolus, and it can realize producing continuously, and
And treating capacity is big.
Described gas nozzle is according to the uniform shaft length being arranged on double-layer back rotary kiln of this area usual manner
On direction.The bottom face of described central jets 1 and the bottom face of described internal ring shower nozzle 2 are relative to outside described
The bottom face of ring spray 3 is that gradual indentation is arranged, i.e. the bottom face of described central jets 1 relative to
The indent of the bottom face of described outer shroud shower nozzle 3, more than the bottom face of described internal ring shower nozzle 2 relative to institute
State the indent of the bottom face of outer shroud shower nozzle 3.The setting of this indent and being combined with beneficially of cyclone 5
Improve combustion stability and mixing efficiency.
Described cooling-part 4 is a circulating line being provided with cooling water inlet and coolant outlet.This knot
Structure can protect gas nozzle from high temperature ablation, improves service life.
The gas nozzle that the present embodiment the provides design by coaxial triple channel structure, and cooling-part 4
With the setting of cyclone 5, the flame successfully solving nozzle controls and the irrational problem of thermo parameters method,
Nozzle life is long, good mixing effect, and regulation and control can realize fully burning flexibly, and high temperature is reasonably distributed and protects
Demonstrate,prove the holdup time of abundance, substantially increase efficiency of combustion.
Described leather particle charging aperture, described particle lime-ash discharging opening and the described first thick gas outlet of high temperature
Being arranged on the inner core of described pyrolysis gasification furnace, described first high-temperature flue gas outlet is arranged on described pyrolysis gas
Change on the urceolus of stove.
Described leather sludge inlet, described mud lime-ash discharging opening and the described second thick gas outlet of high temperature
Being arranged on the inner core of described pyrolysis oven, described second high-temperature flue gas outlet is arranged on outside described pyrolysis oven
On cylinder.
Described pyrolysis gasification furnace and described pyrolysis oven all include an air line, and described air line is with described
Gas nozzle is connected, for carrying air to described central jets and described outer shroud shower nozzle.
Described gas-purification system also includes a clean gas outlet, and one first cooling water inlet and
First steam (vapor) outlet.The by-product that is provided for of described first coolant outlet and described first steam (vapor) outlet steams
Vapour.Described clean gas outlet includes circulation port in a clean gas collection port and a clean gas.Institute
State clean gas collection port for by combustion gas guiding system, for other purposes, such as generating electricity.Described clearly
In clean combustion gas, circulation port is also connected with described gas nozzle, for delivery of fuel gas in described internal ring shower nozzle,
Heat is provided for double-layer back rotary kiln.In described clean gas, arranging of circulation port can be by a prepared part
Clean gas again imports to be passed through in double-layer back rotary kiln and burns, and provides heat for pyrolytic gasification process,
This greatly reduces system energy consumption.
Described flue gas purification system also includes an exhanst gas outlet, one second cooling water inlet and one second steam
Outlet.Described second coolant outlet and described second steam (vapor) outlet be provided for byproduct steam.
Described gas-purification system be sequentially connected in series chilling tower, neutralize reaction tower, sack cleaner,
Air-introduced machine and scrubbing tower；Described flue gas purification system be sequentially connected in series chilling tower, neutralize reaction tower,
Sack cleaner, air-introduced machine and scrubbing tower.
The process technique of tanning waste that the present embodiment provides, it uses above-mentioned processing means to carry out,
Described process technique comprises the steps:
(1) by the inner core of leather particle continuous feed to described pyrolysis gasification furnace, it is pyrolyzed, gasifies,
Obtain the thick combustion gas of high temperature, high-temperature flue gas and particle lime-ash；Inlet amount is: leather particle (20 ton day)；
(2) by the inner core of leather mud continuous feed to described pyrolysis oven, it is pyrolyzed, obtains high temperature and slightly fire
Gas, high-temperature flue gas and mud lime-ash；Leather mud (38 ton day)；
(3) it is transported to described gas-purification system after thick for high temperature combustion gas being merged, obtains clean gas；Will
High-temperature flue gas is transported to described flue gas purification system after merging, and obtains flue gas.
Wherein, described leather mud refers to the biochemical sludge that in leather making process, sewage produces after treatment；Institute
The leather particle stated refers to leather shavings and the leftover bits and pieces etc. produced in leather making process.In the present embodiment, process hides is given up
The material composition analysis of gurry, calorimetry result are as shown in table 1,2.
The component analysis of table 1 raw material
In table 1, MarRefer to receive the moisture of sample；Ad, Vd, FCdRefer to sample drying respectively
The ash of base, volatilizable composition and the content of fixed carbon, QdRefer to be dried base calorific value.
Table 2 calorimetry (butt)
| Material | Leather particle | Leather mud |
| Calorific value (MJ/kg) | 13.699 | 10.583 |
In step (1), when processing leather particle, described pyrolysis is carried out under reducing atmosphere；
The temperature of described pyrolysis is 1000 DEG C；The time of described pyrolysis is 60min.Described reducing atmosphere is
Hydrogen atmosphere.
In step (2), when processing leather mud, described pyrolysis is carried out under reducing atmosphere；
The temperature of described pyrolysis is 900 DEG C；The time of described pyrolysis is 50min.Described reducing atmosphere is
Carbon monoxide atmosphere.
In step (1) and (2), the temperature of the thick combustion gas of high temperature is 800 DEG C, and the temperature of high-temperature flue gas is
1000℃。
In the present embodiment, also the described clean gas of 50% is imported in described gas nozzle, by burning
Process provides heat, described percentage ratio to be percent by volume for pyrolytic process.
Embodiment 2
The processing means of the present embodiment and process technique are same as in Example 1, the difference is that only: combustion
The number of gas jets is 10；In step (1) and (2), the temperature of the thick combustion gas of high temperature is 600 DEG C,
The temperature of high-temperature flue gas is 900 DEG C；The temperature of step (1) described pyrolysis is 800 DEG C, and the time is 120min；
The temperature of step (2) described pyrolysis is 600 DEG C, and the time is 120min；Participate in one of pyrolytic process
Dividing clean gas to account for the 30% of clean gas, described percentage ratio is percent by volume.
Embodiment 3
The processing means of the present embodiment and process technique are same as in Example 1, the difference is that only: combustion
The number of gas jets is 1；In step (1) and (2), the temperature of the thick combustion gas of high temperature is 1000 DEG C,
The temperature of high-temperature flue gas is 1200 DEG C；The temperature of step (1) described pyrolysis is 1200 DEG C, and the time is 10min；
The temperature of step (2) described pyrolysis is 1000 DEG C, and the time is 10min；Participate in one of pyrolytic process
Dividing clean gas to account for the 80% of clean gas, described percentage ratio is percent by volume.
Effect example 1
The product that embodiment 1 obtains is high chromium concentration ash (1 ton day), steam (12 ton day), combustion gas
(6 ton day).
Being mainly composed of of clean gas after purge drying: H2For 25-38%, CO be 20-31%,
CO2For 7-28%, CH4For 5-19%.Cr in slag2O3Purity more than 40%.Flue gas main component:
N2、CO2、O2、H2O etc..
As can be seen here, the leather mud and the leather particle that produce in leather industry can be carried out harmless by the present invention
Change process and recycling, produce steam and combustion gas after process, and can be to the gasification lime-ash of high chrome contents
Reclaim.By the enforcement of the present invention, can be the energy-saving and environmental protection of tanning waste, resource profit
With exploring a new approach, there is significant economy and environmental benefit, meet China and develop a circular economy
Demand with Ecological Industrial.
Although the foregoing describing the detailed description of the invention of the present invention, but those skilled in the art should managing
Solving, these are merely illustrative of, and protection scope of the present invention is defined by the appended claims.This
The technical staff in field, can be to these embodiment party on the premise of without departing substantially from the principle of the present invention and essence
Formula makes various changes or modifications, but these changes and amendment each fall within protection scope of the present invention.
Claims (10)
1. the processing means of a tanning waste, it is characterised in that described processing means includes
Pyrolysis gasification furnace, a pyrolysis oven, a gas-purification system and a flue gas purification system；Described pyrolysis gas
Changing stove and described pyrolysis oven is double-layer back rotary kiln, described double-layer back rotary kiln includes an inner core and a urceolus,
Described pyrolysis gasification furnace includes a leather particle charging aperture, a particle lime-ash discharging opening, one first high temperature
Thick gas outlet and the outlet of one first high-temperature flue gas, described pyrolysis oven include a leather sludge inlet, one
Mud lime-ash discharging opening, the one second thick gas outlet of high temperature and the outlet of one second high-temperature flue gas；
At least one combustion is also distributed on the urceolus of described pyrolysis gasification furnace and on the urceolus of described pyrolysis oven
Gas jets, described gas nozzle include a most sheathed central jets, an internal ring shower nozzle,
One outer shroud shower nozzle and a cooling-part, described cooling-part ring is located at the Basolateral of described outer shroud shower nozzle,
In described central jets, in described outer shroud shower nozzle, respectively it is equipped with a cyclone；
The described first thick gas outlet of high temperature and the described second thick gas outlet of high temperature are all clean with described combustion gas
Change system is connected, described first high-temperature flue gas outlet and described second high-temperature flue gas outlet all with described cigarette
Gas cleaning system is connected.
2. processing means as claimed in claim 1, it is characterised in that outside described pyrolysis gasification furnace
1～10 gas nozzle is distributed respectively on cylinder and on the urceolus of described pyrolysis oven.
3. processing means as claimed in claim 2, it is characterised in that the bottom of described central jets
The bottom face of face and described internal ring shower nozzle is gradual indent relative to the bottom face of described outer shroud shower nozzle
Cloth, the bottom face of described central jets is relative to the indent of the bottom face of described outer shroud shower nozzle, more than institute
State the bottom face indent relative to the bottom face of described outer shroud shower nozzle of internal ring shower nozzle；Described cooling-part
It it is a circulating line being provided with cooling water inlet and coolant outlet.
4. processing means as claimed in claim 2 or claim 3, it is characterised in that described leather particle enters
Material mouth, described particle lime-ash discharging opening and the described first thick gas outlet of high temperature are arranged on described pyrolytic gasification
On the inner core of stove, described first high-temperature flue gas outlet is arranged on the urceolus of described pyrolysis gasification furnace；
Described leather sludge inlet, described mud lime-ash discharging opening and the described second thick gas outlet of high temperature
Being arranged on the inner core of described pyrolysis oven, described second high-temperature flue gas outlet is arranged on outside described pyrolysis oven
On cylinder；
Described pyrolysis gasification furnace and described pyrolysis oven all include an air line, and described air line is with described
Gas nozzle is connected, for carrying air to described central jets and described outer shroud shower nozzle.
5. processing means as claimed in claim 1, it is characterised in that described gas-purification system is also
Including a clean gas outlet, and one first cooling water inlet and one first steam (vapor) outlet, described first
Coolant outlet and described first steam (vapor) outlet be provided for byproduct steam, described clean gas outlet
Including circulation port in a clean gas collection port and a clean gas, described clean gas collection port is used for will
Combustion gas guiding system；
Described flue gas purification system also includes an exhanst gas outlet, one second cooling water inlet and one second steam
Outlet, described second coolant outlet and described second steam (vapor) outlet be provided for byproduct steam；
Described gas-purification system include chilling tower, neutralize reaction tower, sack cleaner, air-introduced machine and
One or more in scrubbing tower, described flue gas purification system includes chilling tower, neutralizes reaction tower, cloth
One or more in bag dust collector, air-introduced machine and scrubbing tower.
6. processing means as claimed in claim 5, it is characterised in that circulation in described clean gas
Mouth is also connected with described gas nozzle, for delivery of fuel gas in described internal ring shower nozzle；
Described gas-purification system be sequentially connected in series a chilling tower, one neutralize reaction tower, a cloth bag and remove
Dirt device, an air-introduced machine and a scrubbing tower；
Described flue gas purification system be sequentially connected in series a chilling tower, one neutralize reaction tower, a cloth bag and remove
Dirt device, an air-introduced machine and a scrubbing tower.
7. the process technique of a tanning waste, it is characterised in that it uses such as claim 1～6
Processing means described in any one is carried out, and described gas nozzle provides combustion gas by described internal ring shower nozzle respectively,
Thering is provided air by described central jets and described outer shroud shower nozzle, described process technique comprises the steps:
(1) by leather particle charging to the inner core of described pyrolysis gasification furnace, it is pyrolyzed, gasifies, obtain high
The thick combustion gas of temperature, high-temperature flue gas and particle lime-ash；
(2) by leather sewage sludge feed to described pyrolysis oven inner core in, pyrolysis, obtain the thick combustion gas of high temperature,
High-temperature flue gas and mud lime-ash；
(3) it is transported to described gas-purification system after thick for high temperature combustion gas being merged, obtains clean gas；Will
High-temperature flue gas is transported to described flue gas purification system after merging, and obtains flue gas.
Process technique the most as claimed in claim 7, it is characterised in that in step (1) and (2), institute
Stating charging is continuous feed；The temperature of the thick combustion gas of described high temperature is 600～1000 DEG C, described high-temperature flue gas
Temperature is 900～1200 DEG C；
In step (1), described pyrolysis is carried out under reducing atmosphere or oxygen-free atmosphere, described pyrolysis
Temperature is more than or equal to 800 DEG C, and the time of described pyrolysis is 10min-120min；
In step (2), described pyrolysis is carried out under reducing atmosphere or oxygen-free atmosphere, described pyrolysis
Temperature is more than or equal to 600 DEG C, and the time of described pyrolysis is 10min-120min.
Process technique the most as claimed in claim 8, it is characterised in that in step (1), described pyrolysis
Temperature be 800～1200 DEG C；In step (2), the temperature of described pyrolysis is 600～1000 DEG C；
Described reducing atmosphere or oxygen-free atmosphere are nitrogen, carbon dioxide, carbon monoxide, hydrogen and methane
In the atmosphere of one or more gases.
Process technique the most as claimed in claim 7, it is characterised in that a part of clean gas is imported institute
Stating in gas nozzle, the amount of described a part of clean gas accounts for the 30%-80% of described clean gas, institute
Stating percentage ratio is percent by volume.
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| CN111704931A (en) * | 2020-05-28 | 2020-09-25 | 西安交通大学 | Combustible solid waste segmented oxygen-enriched gasification cooperative treatment system |
| CN113637491A (en) * | 2021-08-21 | 2021-11-12 | 浙江宜可欧环保科技有限公司 | Solid waste pyrolysis-oxidation cooperative disposal equipment |
| CN116428594A (en) * | 2023-04-13 | 2023-07-14 | 烟台裕能能源科技有限公司 | Enthalpy-increasing combustion system and method containing volatile matters |
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| CN106010651B (en) | 2019-06-04 |
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