CN112592017A - Organic solid waste microwave pyrolysis process and device - Google Patents
Organic solid waste microwave pyrolysis process and device Download PDFInfo
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- CN112592017A CN112592017A CN202011438889.3A CN202011438889A CN112592017A CN 112592017 A CN112592017 A CN 112592017A CN 202011438889 A CN202011438889 A CN 202011438889A CN 112592017 A CN112592017 A CN 112592017A
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000002910 solid waste Substances 0.000 title claims abstract description 15
- 239000010802 sludge Substances 0.000 claims abstract description 64
- 239000000843 powder Substances 0.000 claims abstract description 22
- 239000002893 slag Substances 0.000 claims abstract description 19
- 238000002309 gasification Methods 0.000 claims abstract description 12
- 239000000956 alloy Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 229910052809 inorganic oxide Inorganic materials 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000004575 stone Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000010963 304 stainless steel Substances 0.000 description 2
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 150000007824 aliphatic compounds Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000013601 eggs Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
-
- 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
- C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
- C10B47/28—Other processes
- C10B47/32—Other processes in ovens with mechanical conveying means
- C10B47/44—Other processes in ovens with mechanical conveying means with conveyor-screws
-
- 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
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/005—After-treatment of coke, e.g. calcination desulfurization
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Combustion & Propulsion (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Treatment Of Sludge (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention discloses an organic solid waste microwave pyrolysis process and device, which comprise a sludge powder bin and a sludge powder bin 1 which are sequentially connected#Screw conveyer, sludge microwave multi-chamber furnace, 2#Screw conveyer, Raymond mill, 3#A screw conveyor and a gasification slag storage bin; the central shaft in the sludge microwave multi-hearth furnace is provided with a plurality of layers of large circular furnace plates and small circular furnace plates which are alternately arranged, the large circular furnace plates and the small circular furnace plates rotate around the central shaft, and each layer of circular furnace plates are all provided with a circular furnace plateThe sludge microwave multi-hearth furnace is provided with scrapers, through holes are formed in the positions, close to the central axis, of the large circular furnace plates on each layer, and a plurality of microwave sources are arranged on the outer wall of the sludge microwave multi-hearth furnace. The invention uses the sludge microwave multi-hearth furnace to treat the sludge powder, so that organic matters, fixed carbon and harmful substances in the sludge powder generate pyrolysis reaction, the organic matters, the fixed carbon and the harmful substances are gasified and are fully decomposed with inorganic oxides to obtain pyrolysis gasified slag, the content of the organic matters is greatly reduced, the amount of the slag is also greatly reduced, and the resource utilization range is enlarged.
Description
Technical Field
The invention relates to an organic solid waste microwave pyrolysis process and device, and belongs to the technical field of municipal sludge treatment.
Background
Along with the rapid development of social economy and urbanization, the discharge amount and the treatment amount of municipal sewage in cities are continuously increased, and a large amount of sludge generated by municipal sewage treatment brings new challenges to the environmental management of the cities. Municipal sludge contains a large amount of various impurities such as bacteria, viruses, worm eggs, heavy metals and the like. The municipal sludge needs to be subjected to harmless treatment, the common harmless treatment in the prior art is to dehydrate and dry the municipal sludge and then directly burn the sludge, and the burning method can greatly reduce the volume of the sludge and improve the heat energy utilization rate by utilizing the energy in the sludge. However, the incineration method has the disadvantages of large investment of treatment facilities, high treatment cost, easy generation of toxic substances such as dioxin and the like due to incineration of organic pollutants in the treatment process, poor purification effect of municipal sludge and large pollution to the environment.
The research of the microwave pyrolysis sludge technology is gradually deepened in recent years, and the microwave pyrolysis sludge technology is a very effective method for treating sludge as resources. The gas obtained by pyrolysis contains a large amount of water gas, and can be used as clean fuel gas or synthesis gas. The oil generated by pyrolysis mainly contains aliphatic compounds and single benzene ring compounds, and the polycyclic aromatic hydrocarbon content is lower, so that the oil is high-value chemical raw materials and fuel oil. The solid produced by pyrolysis can be used as solid fuel, adsorbent, or microwave heating aid.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide an organic solid waste microwave pyrolysis process and device, which can treat and recycle municipal sludge cleanly and efficiently by microwave enhanced pyrolysis gasification.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
an organic solid waste microwave pyrolysis device comprises a sludge powder bin and a sludge powder bin 1 which are sequentially connected#Screw conveyer, sludge microwave multi-chamber furnace, 2#Screw conveyer, Raymond mill, 3#A screw conveyor and a gasification slag storage bin;
the sludge microwave multi-hearth furnace is characterized in that a plurality of layers of large circular furnace plates and small circular furnace plates which are alternately arranged are arranged on a central shaft, the large circular furnace plates and the small circular furnace plates rotate around the central shaft, a scraper is arranged on each layer of circular furnace plates, a through hole is formed in each layer of large circular furnace plates and close to the central shaft, and a plurality of microwave sources are arranged on the outer wall of the sludge microwave multi-hearth furnace.
In the invention, when sludge powder fed into the sludge microwave multi-hearth furnace is heated by microwaves on the rotating circular furnace plate, the sludge powder gradually falls onto the next layer of circular furnace plate from top to bottom under the combined action of centrifugal force and a scraper to be continuously heated, the whole process is monitored in real time, and the heated temperature of the sludge can be automatically adjusted according to the actual process requirement.
Preferably, the radius ratio of the large circular furnace plate to the small circular furnace plate is 1: 0.7 to 0.85.
Preferably, the microwave sources are arranged in one-to-one correspondence with the large circular furnace plates.
Preferably, the power of the microwave source is 1.5 KW-2 KW.
In the invention, the number of the microwave sources can be configured according to the amount of the actually treated sludge, the microwave sources are arranged in a small-power and multi-point mode, so that the sludge is uniformly heated, the pyrolysis gasification efficiency is high, organic matters can be effectively removed, the organic matters are fully gasified to generate a large amount of combustible gas, the waste heat generated by the combustion of the combustible gas in the secondary combustion chamber is introduced into corresponding drying equipment through the induced draft fan, and the combustion consumption of the sludge in the heat treatment can be greatly reduced.
Preferably, the large circular furnace plate and the small circular furnace plate are both made of non-wave-absorbing alloy materials, such as 304 stainless steel, 310S stainless steel and the like. The large circular furnace plate and the small circular furnace plate are both made of non-wave-absorbing alloy materials, so that the microwave power consumption can be reduced, the electric energy is saved, and the utilization rate of microwave energy is improved.
The invention also provides a microwave pyrolysis process for organic solid waste, wherein sludge powder in a sludge powder bin is treated by 1#The screw conveyer is sent to a sludge microwave multi-hearth furnace for microwave enhanced pyrolysis gasification to obtain pyrolysis gasified slag, and the pyrolysis gasified slag is separated from 2#The screw conveyer is sent to a Raymond pulverizer to be pulverized, and then the pulverized material passes through a step 3#The screw conveyer is sent to a gasified slag storage bin for storage and recycling.
The invention uses the sludge microwave multi-hearth furnace to treat the sludge powder, so that organic matters, fixed carbon and harmful substances in the sludge powder generate pyrolysis reaction, the organic matters, the fixed carbon and the harmful substances are gasified and are fully decomposed with inorganic oxides, the generated combustible gas can also be used as a drying heat source of the sludge, the content of the organic matters in pyrolysis gasified slag is greatly reduced, the amount of the slag is also greatly reduced, and the resource utilization range is enlarged.
Drawings
FIG. 1 is a schematic structural diagram of an organic solid waste microwave pyrolysis device of the present invention;
FIG. 2 is a schematic structural view of a large circular plate and a small circular plate according to the present invention;
wherein: 1. sludge powder bin, 2, 1#Screw conveyer, 3, sludge microwave multi-chamber furnace, 4, 2#Screw conveyer, 5, Raymond grinder, 6, 3# A screw conveyor 7 and a gasified slag storage bin;
301. a middle shaft 302, a large circular furnace plate 303, a small circular furnace plate 304, a through hole 305 and a microwave source.
Detailed Description
The technical solutions in the embodiments of the present invention will be described in detail below clearly, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without any creative efforts belong to the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.
Referring to fig. 1 and 2, the organic solid waste microwave pyrolysis device comprises sludge powder bins 1 and 1 which are connected in sequence#Screw conveyer 2, sludge microwave multi-chamber furnace 3, 2#Screw conveyer 4, Raymond pulverizer 5, 3#A screw conveyor 6 and a gasification slag storage bin 7;
the central shaft 301 in the sludge microwave multi-hearth furnace 3 is provided with a plurality of layers of large circular furnace plates 302 and small circular furnace plates 303 which are alternately arranged, and the radius ratio of the large circular furnace plates 302 to the small circular furnace plates 303 is 1: 0.7-0.85, the materials are all non-wave-absorbing alloy materials, such as 304 stainless steel, 310S stainless steel, etc. The large circular furnace plate and the small circular furnace plate are both made of non-wave-absorbing alloy materials, so that the microwave power consumption can be reduced, the electric energy is saved, and the utilization rate of microwave energy is improved.
Big circular stone or metal plate 302 and little circular stone or metal plate 303 all rotate around axis 301, all are equipped with the scraper on every layer of circular stone or metal plate, and the nearly well axle 301 department of every layer of big circular stone or metal plate 302 has all seted up through-hole 304, and 3 outer walls of mud microwave multi-chamber stove are equipped with a plurality of microwave sources 305, and the power of microwave source 305 is 1.5KW ~ 2KW, and it sets up with big circular stone or metal plate 302 one-to-one.
In the invention, when sludge powder fed into the sludge microwave multi-hearth furnace is heated by microwaves on the rotating circular furnace plate, the sludge powder gradually falls onto the next layer of circular furnace plate from top to bottom under the combined action of centrifugal force and a scraper to be continuously heated, the whole process is monitored in real time, and the heated temperature of the sludge can be automatically adjusted according to the actual process requirement.
In the invention, the number of the microwave sources can be configured according to the amount of the actually treated sludge, the microwave sources are arranged in a small-power and multi-point mode, so that the sludge is uniformly heated, the pyrolysis gasification efficiency is high, organic matters can be effectively removed, the organic matters are fully gasified to generate a large amount of combustible gas, the waste heat generated by the combustion of the combustible gas in the secondary combustion chamber is introduced into corresponding drying equipment through the induced draft fan, and the combustion consumption of the sludge in the heat treatment can be greatly reduced.
The invention relates to a microwave pyrolysis process of organic solid waste, wherein sludge powder in a sludge powder bin is treated by 1#The screw conveyer is sent to a sludge microwave multi-hearth furnace for microwave enhanced pyrolysis gasification to obtain pyrolysis gasified slag, and the pyrolysis gasified slag is separated from 2#The screw conveyer is sent to a Raymond pulverizer to be pulverized, and then the pulverized material passes through a step 3#The screw conveyer is conveyed to a gasification slag storage bin for storage and recycling, for example, pyrolysis gasification slag is used for preparing ceramsite, novel environment-friendly foamed ceramic plates, chemical porous filter core ceramic and the like, and the like are recycled.
Claims (6)
1. The utility model provides an organic solid useless microwave pyrolysis device which characterized in that: comprises a sludge powder bin and a sludge powder bin 1 which are connected in sequence#Screw conveyer, sludge microwave multi-chamber furnace, 2#Screw conveyer, Raymond mill, 3#A screw conveyor and a gasification slag storage bin;
the sludge microwave multi-hearth furnace is characterized in that a plurality of layers of large circular furnace plates and small circular furnace plates which are alternately arranged are arranged on a central shaft, the large circular furnace plates and the small circular furnace plates rotate around the central shaft, a scraper is arranged on each layer of circular furnace plates, a through hole is formed in each layer of large circular furnace plates and close to the central shaft, and a plurality of microwave sources are arranged on the outer wall of the sludge microwave multi-hearth furnace.
2. The microwave pyrolysis device for organic solid wastes according to claim 1, characterized in that: the radius ratio of the large circular furnace plate to the small circular furnace plate is 1: 0.7 to 0.85.
3. The microwave pyrolysis device for organic solid wastes according to claim 1, characterized in that: the microwave sources are arranged corresponding to the large circular furnace plates one by one.
4. The microwave pyrolysis device for organic solid wastes according to claim 1, characterized in that: the power of the microwave source is 1.5 KW-2 KW.
5. The microwave pyrolysis device for organic solid wastes according to claim 1, characterized in that: the large circular furnace plate and the small circular furnace plate are both made of non-wave-absorbing alloy materials.
6. The organic solid waste microwave pyrolysis process is characterized by comprising the following steps: sludge powder in the sludge powder bin is treated by 1#The screw conveyer is sent to a sludge microwave multi-hearth furnace for microwave enhanced pyrolysis gasification to obtain pyrolysis gasified slag, and the pyrolysis gasified slag is separated from 2#The screw conveyer is sent to a Raymond pulverizer to be pulverized, and then the pulverized material passes through a step 3#The screw conveyer is sent to a gasified slag storage bin for storage and recycling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011438889.3A CN112592017A (en) | 2020-12-10 | 2020-12-10 | Organic solid waste microwave pyrolysis process and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011438889.3A CN112592017A (en) | 2020-12-10 | 2020-12-10 | Organic solid waste microwave pyrolysis process and device |
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| Publication Number | Publication Date |
|---|---|
| CN112592017A true CN112592017A (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011438889.3A Pending CN112592017A (en) | 2020-12-10 | 2020-12-10 | Organic solid waste microwave pyrolysis process and device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1477461A1 (en) * | 2003-05-14 | 2004-11-17 | Muegge Electronic GmbH | Method and device for drying and gasification of sludge |
| CN106838933A (en) * | 2017-01-24 | 2017-06-13 | 山东大学 | A kind of pyrolyzing sludge method of disposal being quenched based on microwave |
| CN107794094A (en) * | 2017-11-25 | 2018-03-13 | 圣火科技(河南)有限责任公司 | A kind of flammable solid pyrolysis of waste gasification installation and method |
| CN108862972A (en) * | 2018-06-22 | 2018-11-23 | 山东大学 | A method of sludge charcoal processing is pyrolyzed based on microwave induced orientation heating technique |
| CN209024394U (en) * | 2018-10-31 | 2019-06-25 | 毅康科技有限公司 | A kind of microwave treatment sludge integrated apparatus |
-
2020
- 2020-12-10 CN CN202011438889.3A patent/CN112592017A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1477461A1 (en) * | 2003-05-14 | 2004-11-17 | Muegge Electronic GmbH | Method and device for drying and gasification of sludge |
| CN106838933A (en) * | 2017-01-24 | 2017-06-13 | 山东大学 | A kind of pyrolyzing sludge method of disposal being quenched based on microwave |
| CN107794094A (en) * | 2017-11-25 | 2018-03-13 | 圣火科技(河南)有限责任公司 | A kind of flammable solid pyrolysis of waste gasification installation and method |
| CN108862972A (en) * | 2018-06-22 | 2018-11-23 | 山东大学 | A method of sludge charcoal processing is pyrolyzed based on microwave induced orientation heating technique |
| CN209024394U (en) * | 2018-10-31 | 2019-06-25 | 毅康科技有限公司 | A kind of microwave treatment sludge integrated apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 徐建平等: "《固体废物处理与处置》", 合肥工业大学出版社, pages: 175 * |
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