CN208917130U - A kind of solid waste pyrolysis system that coupling high temperature pyrolysis gas are directly burnt - Google Patents
A kind of solid waste pyrolysis system that coupling high temperature pyrolysis gas are directly burnt Download PDFInfo
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- CN208917130U CN208917130U CN201821245701.1U CN201821245701U CN208917130U CN 208917130 U CN208917130 U CN 208917130U CN 201821245701 U CN201821245701 U CN 201821245701U CN 208917130 U CN208917130 U CN 208917130U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
- Y02P20/143—Feedstock the feedstock being recycled material, e.g. plastics
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Abstract
A kind of solid waste pyrolysis system that coupling high temperature pyrolysis gas are directly burnt, the outlet of solid waste transportation system connects with the entrance of pretreatment system, the discharge port of pretreatment system connects with the import of pyrolysis oven, the residual coke outlet of pyrolysis oven connects with coke collecting tank, the gas vent of pyrolysis oven is connect with the entrance of high―temperature nuclei feed channel, hot precipitator is set in high―temperature nuclei feed channel, and the outlet of high―temperature nuclei feed channel connects with the entrance of combustion system；Air blower is connect with air preheater, the hot air outlet of air preheater connects with the entrance of combustion system, the outlet of combustion system connects with the entrance of heating furnace, pyrolysis oven is located in heating furnace, the exhanst gas outlet of heating furnace connects with air preheater, and the exhanst gas outlet of air preheater is connect with system for cleaning fume.The utility model provides that a kind of energy recovery rate is higher, is avoided that blocking and tar secondary pollution, the solid waste pyrolysis system that directly burns of coupling high temperature pyrolysis gas.
Description
Technical field
The utility model relates to a kind of pyrolysis of solid waste and pyrolytic tar cleaning treatment systems.
Background technique
The fast development of China's economy and urbanization leads to a large amount of generations of cities and towns solid waste.Traditional solid waste
The direct burying method of object not only occupies large amount of land resources, and easily causes the secondary pollution of underground water and soil, and solid is useless
Gurry burns the higher value application that rule is difficult to realize solid waste.Compared with directly landfill and incineration method, solid waste
Pyrolytic technique had not only been able to achieve the minimizing of solid waste, innoxious and resource utilization, but also can obtain flammable synthesis gas, coke
Equal products.The major technology bottleneck of solid waste pyrolytic technique is that pyrolytic process is inevitably generated tar, causes solid
A series of problems, such as energy recovery rate reduction, pyrolysis oven upstream device and line clogging and secondary pollution of waste.Currently,
The main removal methods of solid waste pyrolytic tar generally include washing method, catalytic decomposition and electric fishing method etc..Washing method institute
The tar cleaning solution obtained is difficult to be further processed, and easily causes secondary pollution；The tar removal efficiency of catalytic decomposition depends on urging
Agent type, catalyst higher cost and easy inactivation；Electric fishing method energy consumption is higher, and the processing of the resulting tar of electric fishing is still difficult
Topic.
Summary of the invention
In order to overcome pyrolytic tar existing for existing solid waste pyrolytic technique to cause solid waste energy recovery rate
The deficiency of secondary pollution caused by lower, pyrolytic tar occluding device and pipeline and pyrolytic tar, the utility model provide
A kind of energy recovery rate is higher, is avoided that blocking and tar secondary pollution, the solid waste that directly burns of coupling high temperature pyrolysis gas
Object pyrolysis system.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of solid waste pyrolysis system that coupling high temperature pyrolysis gas are directly burnt, the system comprises solid waste
Transportation system, pretreatment system, pyrolysis oven, high―temperature nuclei feed channel, hot precipitator, combustion system, heating furnace, air blower,
Air preheater and system for cleaning fume.The outlet of the solid waste transportation system and entering for the pretreatment system
Mouth connects, and the discharge port of the pretreatment system connects with the import of the pyrolysis oven, the residual coke outlet of the pyrolysis oven
Connect with coke collecting tank, the gas vent of the pyrolysis oven is connect with the entrance of high―temperature nuclei feed channel, the high―temperature nuclei
Hot precipitator is set in feed channel, and the outlet of the high―temperature nuclei feed channel connects with the entrance of the combustion system；It is described
Air blower is connect with the air preheater, the entrance phase of the hot air outlet of the air preheater and the combustion system
It connects, the outlet of the combustion system connects with the entrance of the heating furnace, and the pyrolysis oven is located in the heating furnace, described to add
The exhanst gas outlet of hot stove connects with the air preheater, and the exhanst gas outlet of the air preheater and the gas cleaning are handled
System connection.
Further, the system also includes synthesic gas compressor, the outlet of the hot precipitator and the synthesis air pressures
The entrance of contracting machine connects, and the outlet of the synthesic gas compressor is connected to the entrance of the combustion system.
Further, the pretreatment system include for solid waste carry out broken crushing system and for pair
The separation system that broken solid waste is sorted, the outlet and the entrance phase of the separation system of the crushing system
It connects.
Further, the combustion system includes Multilevel combustion device, and the burner is that flammable synthesis gas and gaseous state are burnt
Oil burner or other supplement fuel burners.Other supplement fuel include gasoline or natural gas.
The system for cleaning fume includes out of stock tower, deduster, desulfurizing tower, air-introduced machine and the chimney successively to connect.
The beneficial effects of the utility model are mainly manifested in: 1, can be realized solid waste reducing, harmless treatment
And resource utilization.By pyrolysis processing, the volume of solid waste is greatly reduced.By fuel sectional fractional combustion and take off
The processing such as nitre, dedusting, desulfurization, pollutant emission meet environmental protection standard requirement.The residual coke that pyrolysis oven generates may be used as it
The fuel of his energy device；2, compared to traditional tar removal methods, the utility model does not need that additional tar purifying is arranged
Equipment is removed, investment is significantly reduced；Tar completely burned in the gaseous state, can be realized thorough removing；Energy-saving benefit is significant, burnt
The heat of oil firing release realizes energy regenerating utilization for heating pyrolysis oven and entering the air of burner；3, pyrolysis is burnt
Oil is transported to combustion system by high-temperature pipe, completely burned off in the gaseous state, avoids the secondary dirt that the subsequent disposition of tar generates
Dye.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for coupling the solid waste pyrolysis system that high temperature pyrolysis gas are directly burnt,
Appended drawing reference is as follows: 1 transport system；2 pretreatment systems (2-1 crushing system；2-2 separation system)；3 pyrolysis ovens；
3 ' coke collecting tanks；4 high-temperature pipes；4 ' hot precipitators；4 " synthesic gas compressors；5 combustion systems；6 heating furnaces；7 air blowers；
8 air preheaters；9 denitrification apparatus；10 dedusters；11 desulfurizers；12 air-introduced machines；13 chimneys.
Specific embodiment
The utility model is further described with reference to the accompanying drawing.
Referring to Fig.1, a kind of solid waste pyrolysis system that coupling high temperature pyrolysis gas are directly burnt, including solid waste
Transportation system 1, pretreatment system 2 (including crushing system 2-1, separation system 2-2), pyrolysis oven 3, high-temperature pipe 4, high-temperature dust removal
Device 4 ', synthesic gas compressor 4 ", combustion system 5, heating furnace 6, air blower 7, air preheater 8, system for cleaning fume (packet
Include out of stock tower 9, deduster 10, desulfurizing tower 11, air-introduced machine 12, chimney 13).
In the system, solid waste is successively sent to pretreatment system 2 by transport system 1；
The pretreatment system 2 such as is crushed to solid waste, is sorted at the pretreatment.The effect of crushing system 2-1 is
Reduce the size of the ingredients such as plastics, rubber, paper, timber, chemical fibre in solid waste；The effect of separation system 2-2 is separation
The inorganic matters such as brick, metal, battery, silt in solid waste.
The pyrolysis oven 3, effect be by solid waste paper, plastics, rubber, timber, chemical fibre and other
Carbohydrate is heated, and makes said components that pyrolysis occur at high temperature, is generated and is contained H2、CO、CH4Equal fuel gas
Synthesis gas and gaseous state tar.Pyrolysis oven 3 is characterized in that reaction atmosphere is anaerobic or oxygen deprivation, remaining solid after pyrolytic
Waste becomes residual coke.Coke is collected in collecting tank 3 ', may be used as the fuel of the resource equipments such as boiler.
The high-temperature pipe 4, it is characterised in that operation temperature highest can be higher than 400 DEG C, and gaseous state tar will not at high temperature
Condensation becomes tar liquid wherein, so that the tar that pyrolysis oven generates is transported to together with flammable synthesis gas in a gaseous form
Combustion system 5.
The hot precipitator 4 ', effect is to separate particulate matter from pyrolysis oven exiting syngas and gaseous state tar.
When particle concentration is lower in pyrolysis oven exit gas, it may not be necessary to which hot precipitator 4 ' is set.
The synthesic gas compressor 4 ", effect are will to contain the synthesis gas compression of combustible gas and tar, improve the pressure of gas
Power flows through the pressure loss that downstream line and equipment generate to overcome.
The combustion system 5, effect are to receive flammable synthesis gas and gaseous state tar, while receiving and coming from air preheater
8 heating air makes the oxygen in flammable synthesis gas and gaseous state tar and air that combustion reaction occur, releases heat.The combustion
Burning system 5, it may include multiple groups are flammable synthesis gas and gaseous state tar burner may also comprise the supplement fuel such as natural gas, gasoline
Burner.The various burners of combustion system 5 are characterized in that using segmentation fractional combustion, it is characterized in that part of fuel is first with one
Partial air contact, the reaction of generating unit divided combustion；Then, remaining fuel is disposable or connects several times with remaining air again
Touching, makes fuel completely burned, it is characterized in that significantly reducing the discharge of pollutant NOx.
The heating furnace 6, effect is to be heated to pyrolysis oven 3 to be pyrolyzed required high temperature.Heating furnace 6 is characterized in that
Its furnace space surrounds the outside of pyrolysis oven 3, and the high-temperature flue gas that combustion system 5 generates enters heating furnace 6, to the outer of pyrolysis oven 3
Wall surface is heated.
The air blower 7, effect is that the air pressurized in atmosphere and is delivered air to air preheater 8, special
It levies and is to provide additional pressure for air, the pressure loss for overcoming air to flow in equipment and pipeline.
The air preheater 8, effect is will to heat from the air of air blower 7, is improved before entering combustion system
Air temperature.It is characterized in that, the heat of heating air, from high-temperature flue gas, which goes out from heating furnace 3
Mouthful.
The denitrating tower 9, effect is to remove the nitrogen oxides in 8 exiting flue gas of air preheater, feature
It is that nitrogen oxides in flue gas is converted into N2。
The deduster 10, effect is further to remove the dust contained in 9 exiting flue gas of denitrification apparatus, feature
It is that operation temperature is 20~100 DEG C.
The desulfurizing tower 11, effect is to remove the sulfurous pollutants in 10 exiting flue gas of deduster, feature
It is the sulfur oxide in flue gas becoming sulfate.
The air-introduced machine 12, effect is that purified flue gas is transported to chimney 13, it is characterized in that the pressure of air inlet
Lower than local atmospheric pressure.
The chimney 13, effect is that the flue gas of air-introduced machine exhaust outlet is transported to high-altitude, it is characterized in that utilizing buoyancy lift
Flow flue gas from bottom to top.
In the present embodiment, solid waste generally comprises plastics, rubber, paper, timber, fiber, brick, metal, electricity
The mixture of pond, sandy soil or in which two kinds, many kinds of substance, by the transport system 1 for including the equipment such as grab bucket and belt conveyer
Into pretreatment system 2.
In pretreatment system 2, solid waste sequentially enters crushing system 2-1, separation system 2-2.Crushing system 2-1
It may include primary mill and recursher.Plastics, rubber, paper, timber, fibre in primary mill, in solid waste
The length of dimension is reduced to be less than 20cm, and above-mentioned solid waste component is further crushed small to length in recursher
In 5cm.Separation system 2-2 may include rotary screen, winnowing machine, magnet separator.In rotary screen, length is small in solid waste
Sieve pore is penetrated in the sandy soil and brick of 5cm, is discharged to exterior；In winnowing machine, length is greater than plastics, paper, the wood of 15cm
The components such as material, fiber are separated, and are sent into recursher and are further crushed to length less than 5cm；In magnetic separator, solid
Metal, battery in waste separate with other components under magneticaction and are discharged to exterior.
Enter pyrolysis oven 3 by pretreated solid waste, operation temperature is 300~600 DEG C.In solid waste
Plastics, rubber, paper, timber, fiber thermally decomposed under conditions of starvation, generate and contain H2、CO、CH4、CO2Equal gases
Flammable synthesis gas.It is pyrolyzed while generating gaseous state tar-like substance, it is characterized in that the organic matter comprising elements such as C, H, O.Solid
The residual solid of pyrolysis of waste, main includes remaining coke and ash content, and pyrolysis oven is discharged and is stored in collecting tank 3 ',
It can be used as the fuel of the energy devices such as boiler.
The flammable synthesis gas and gaseous state tar-like substance that pyrolysis oven 3 generates subsequently enter the height that temperature is 350~400 DEG C
Warm synthesis gas pipeline 4 applies thermal insulation material in pipeline.Since the operation temperature of high-temperature pipe is higher than the dew point of gaseous state tar material,
Therefore tar will not condense in high-temperature pipe.Then flammable synthesis gas and gaseous state tar pass through the removal of hot precipitator 4 '
The particulate matters such as dust, into combustion system 5.In certain embodiments, the particle content in flammable synthesis gas and gaseous state tar
It is very low, hot precipitator 4 ' (being represented by dashed line in figure) can be no longer set.
Each combustor section fractional combustion of flammable synthesis gas and gaseous state tar in combustion system 5.Air point it is multistage into
Enter burner, the ratio of theoretical air requirement required for air total amount and full combustion of gas is 1.05~1.2.In certain implementations
Example, in first-stage burning device, the intake of air accounts for the 40%~60% of total air；In the burner of the second level, air
Intake accounts for the 60%~40% of total air.In many examples, combustion system 5 may include multiple groups syngas combustion device and
Gaseous state tar burner, every group of burner may each comprise 2 or more burners, and each burner can be fractional combustion
Device.It is sent into combustion system 5 since air is segmented classification, the air capacity of burners at different levels is reduced, and advantageously reduces thermal NO x
The discharge of pollutant.
In many other embodiments, need that supplement fuel (such as natural gas, gasoline etc.) is passed through combustion system 5 simultaneously
It burns.These embodiments include: in 3 startup stage of pyrolysis oven, and generating heat using fuel combustions such as natural gases will be pyrolyzed
The temperature of furnace 3 is heated to 300~600 DEG C of operation temperature；In 3 normal operating phase of pyrolysis oven, the fuel combustions such as natural gas are utilized
Heat is generated as additional heat, the operation temperature of pyrolysis oven 3 is maintained at 300~600 DEG C.Supplement fuel burner can also be adopted
It with segmentation fractional combustion, and may include 1 or more burner.
The high-temperature flue gas that the burning of combustion system 5 generates, into the enclosure space of heating furnace 6, by radiation, convection current, thermally conductive
Etc. modes heat the outside wall surface of pyrolysis oven 3, so that pyrolysis oven 3 is reached required operation temperature.The temperature of high-temperature flue gas is reduced to
About 300~400 DEG C.
The high-temperature flue gas that heating furnace 6 exports subsequently enters air preheater 8.Meanwhile the air of room temperature is sent by air blower 7
Air preheater 8.High-temperature flue gas and Cryogenic air carry out heat transfer in 8.The temperature of flue gas is further reduced to 100~
120 DEG C, and enter tail flue gas purification system.The temperature of air is heated to 60~100 DEG C, into combustion system 5.
Tail flue gas purification system includes the processing such as denitration, dedusting, desulfurization, is wanted with meeting the environmental protection of flue gas pollutant discharge
It asks.In denitrification apparatus 9, the nitrogen oxides in flue gas is in NH3Under the action of by catalytic chemistry reaction be reduced to N2.It is removing
In dirt device 10, the fine solid particle object in flue gas is separated from flue gas under electric field or cloth bag drag effect；In desulfurizer
In 11, the oxysulfide in flue gas is converted into the plaster of paris by chemical reaction under the action of lime white.Purified flue gas is most
Chimney 13 is introduced by air-introduced machine 12 afterwards, arranges Xiang great Qi.
It is noted that this specific embodiment is only to realize a kind of typical way of the utility model aim, other any and sheets
The similar specific embodiment of utility model core technology scheme is all in the scope of this patent.
Claims (4)
1. a kind of solid waste pyrolysis system that coupling high temperature pyrolysis gas are directly burnt, which is characterized in that the system comprises
Solid waste transportation system, pretreatment system, pyrolysis oven, high―temperature nuclei feed channel, hot precipitator, combustion system, heating
Furnace, air blower, air preheater and system for cleaning fume, the outlet of the solid waste transportation system and the pre- place
The entrance of reason system connects, and the discharge port of the pretreatment system connects with the import of the pyrolysis oven, the pyrolysis oven it is residual
Remaining coke export connects with coke collecting tank, and the gas vent of the pyrolysis oven is connect with the entrance of high―temperature nuclei feed channel, institute
It states and hot precipitator is set in high―temperature nuclei feed channel, the outlet of the high―temperature nuclei feed channel and the entrance of the combustion system
Connect；The air blower is connect with the air preheater, the hot air outlet of the air preheater and the combustion system
Entrance connect, the outlet of the combustion system connects with the entrance of the heating furnace, and the pyrolysis oven is located at the heating furnace
Interior, the exhanst gas outlet of the heating furnace connects with the air preheater, the exhanst gas outlet of the air preheater and the cigarette
The connection of gas cleaning treatment system.
2. the solid waste pyrolysis system that coupling high temperature pyrolysis gas are directly burnt as described in claim 1, which is characterized in that
The system also includes synthesic gas compressor, the outlet of the hot precipitator is connect with the entrance of the synthesic gas compressor,
The outlet of the synthesic gas compressor is connected to the entrance of the combustion system.
3. the solid waste pyrolysis system that coupling high temperature pyrolysis gas are directly burnt, feature exist as claimed in claim 1 or 2
In the pretreatment system includes for carrying out broken crushing system to solid waste and for useless to broken solid
The outlet of the separation system that gurry is sorted, the crushing system connects with the entrance of the separation system.
4. the solid waste pyrolysis system that coupling high temperature pyrolysis gas are directly burnt, feature exist as claimed in claim 1 or 2
In, the combustion system include Multilevel combustion device, the burner be flammable synthesis gas and gaseous state tar burner or other
Supplement fuel burner.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108977211A (en) * | 2018-08-03 | 2018-12-11 | 浙江工业大学 | A kind of solid waste pyrolysis system that coupling high temperature pyrolysis gas are directly burnt |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108977211A (en) * | 2018-08-03 | 2018-12-11 | 浙江工业大学 | A kind of solid waste pyrolysis system that coupling high temperature pyrolysis gas are directly burnt |
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