CN105174678B - Domestic sludge pyrolysis processing technique - Google Patents

Domestic sludge pyrolysis processing technique Download PDF

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Publication number
CN105174678B
CN105174678B CN201510544801.9A CN201510544801A CN105174678B CN 105174678 B CN105174678 B CN 105174678B CN 201510544801 A CN201510544801 A CN 201510544801A CN 105174678 B CN105174678 B CN 105174678B
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sludge
gas
pyrolysis
pyrolysis oven
section
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Expired - Fee Related
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CN201510544801.9A
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CN105174678A (en
Inventor
单文奎
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ANHUI ZHUOXIN CLEAN ENERGY TECHNOLOGY CO., LTD.
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Anhui Zhuoxin Clean Energy Technology Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/40Valorisation of by-products of wastewater, sewage or sludge processing

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  • Treatment Of Sludge (AREA)

Abstract

The invention discloses a kind of domestic sludge pyrolysis processing technique, after sludge is dehydrated through sludge pump feeding dehydrator;Elevator is sent to pyrolysis oven;The high-temperature flue gas generated that burnt into heat blower enters pyrolysis oven retort section indirectly, and the flue gas of retort section is directly entered preheating and drying section again;By being arranged outside dedusting after into the flue gas radiating of preheating and drying section;Flue gas HYBRID RETORTING gas into retort section enters high temperature gas cleaning device;Purified system isolates tar and saturation water-gas again;Sludge carbon is arranged by the water-gas cooling of circulation saturation is outer.The pyrolyzing sludge technology that this technique is used is sludge reduction, stabilisation, innoxious, recycling effective way, and energy utilization rate is high, volume reduction rate is high, operating cost is low;, it is necessary to which the exhausted air quantity of processing is small after burning;Incomplete burning process is changed into the complete combustion process of gas by sludge without landfill, makes sludge carbon solid particulate matter discharge capacity few, more environmentally friendly.

Description

Domestic sludge pyrolysis processing technique
Technical field
The present invention relates to a kind of domestic sludge handling process, more particularly to a kind of domestic sludge pyrolysis processing technique.
Background technology
Current domestic sludge is handled by way of landfill, and the organic matter in domestic sludge can not be decomposed, and is held It is also easy to produce secondary pollution.
The content of the invention
For weak point of the prior art, the invention provides it is a kind of can be effectively to the organic matter in domestic sludge It is pyrolyzed, more environmentally friendly domestic sludge pyrolysis processing technique.
In order to solve the above-mentioned technical problem, present invention employs following technical scheme:
Domestic sludge pyrolysis processing technique, the technique comprises the following steps:
1)Sludge pump is opened, sludge is sent into dewaterer by sludge pump, and dewaterer will input elevator after sludge dewatering, lifting Machine is by the sludge lifting after dehydration and is input to the top of pyrolysis oven;
2)Along its axially arranged agitating shaft in pyrolysis oven, stirring vane, motor driving stirring are uniformly arranged on agitating shaft Axle drives stirring vane to be stirred in pyrolysis oven;It is divided into three sections in pyrolysis oven from top to bottom, epimere is preheating and drying section, and stage casing is Retort section, hypomere is cooling section;
3)Sludge after dehydration is dried in the preheating and drying section of pyrolysis oven, in retort section in dried sludge Organic matter pyrolysis into fuel gas, the flue gas HYBRID RETORTING gas input high temperature gas cleaning device dedusting produced in retort section, Pyrolysis gas purification furnace is passed through by high temperature gas cleaning device purified gas and isolates tar, then heat is extracted out by gas fan The saturation water-gas vented one's spleen in purification furnace, a saturation water-gas part is outer to be supplied, and a part of saturation water-gas inputs heat blower Interior burning, another part saturation water-gas is passed through the cooling section in pyrolysis oven Nei and the sludge carbon after pyrolysis is cooled down;
4)The preheating and drying section that the high-temperature flue gas part produced after being burnt in heat blower is passed through in pyrolysis oven is dried Sludge after dehydration, the retort section that another part is passed through in pyrolysis oven provides heat energy for pyrolysis;
5)The sludge carbon that retort section in pyrolysis oven is produced is discharged after cooling section cooling from the bottom of pyrolysis oven;
6)Discharged in into pyrolysis oven after the flue gas radiating of preheating and drying section from the top of pyrolysis oven, and through smoke duster It is outer after dedusting to arrange.
As a preferred embodiment of the present invention, the discharge pipe of the heat blower and blower fan is connected, by blower fan to Blown in heat blower.
Compared with prior art, domestic sludge pyrolysis processing technique has the following advantages that:
1st, the pyrolyzing sludge technology that this technique is used is sludge reduction, stabilisation, innoxious, recycling effective way Footpath.
2nd, this technique is a green, the thermal treatment technology without secondary pollution;Energy utilization rate is high, volume reduction rate is high, fortune Row expense is low;Fundamentally solve the problems, such as Heavy Metals in Sludge;, it is necessary to which the exhausted air quantity of processing is small after burning, renewable energy is reclaimed Source.
3rd, this technique uses pyrolytic technique, and without landfill, incomplete burning process is changed into the complete combustion process of gas, Make sludge carbon solid particulate matter discharge capacity few, it is more environmentally friendly.
Brief description of the drawings
Fig. 1 is the flow chart of life pyrolyzing sludge handling process;
Fig. 2 is the structural representation that life pyrolyzing sludge is handled.
In figure:1-sludge pump;2-dewaterer;3-elevator;4-pyrolysis oven;41-preheating and drying section; 42-retort section;43-cooling section;5-agitating shaft;6-stirring vane;7-motor;8-heat blower;9-cigarette Gas deduster;10-high temperature gas cleaning device;11-pyrolysis gas purification furnace;12-tar;13-gas fan; 14— Blower fan.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the flow chart of life pyrolyzing sludge handling process, and Fig. 2 is the structural representation that life pyrolyzing sludge is handled, Domestic sludge pyrolysis processing technique comprises the following steps:
1)Sludge pump 1 is opened, sludge is sent into dewaterer 2 by sludge pump 1, and dewaterer 2 will input elevator after sludge dewatering 3, elevator 3 is by the sludge lifting after dehydration and is input to the top of pyrolysis oven 4.
2)Along its axially arranged agitating shaft 5 in pyrolysis oven 4, stirring vane 6 is uniformly arranged on agitating shaft 5, motor 7 drives Agitating shaft 5 drives stirring vane 6 to be stirred in pyrolysis oven 4;It is divided into three sections in pyrolysis oven 4 from top to bottom, epimere is preheating and drying Section 41, stage casing is retort section 42, and hypomere is cooling section 43.
3)From furnace roof portion, by sealing addition sealing buffer bin, sealed batcher enters pyrolysis to sludge after dehydration again The preheating and drying section 41 of stove, the sludge after dehydration is dried in the preheating and drying section 41 of pyrolysis oven 4;Sludge after dehydration leads to Stirring vane 6 is crossed to move downward, 700 degree high-temperature flue gas that heat blower 8 below is produced enter in preheating and drying section 41 and Sludge after dehydration carries out heat exchange, improves sludge temperature, reduces the load of sludge device for quickly elevating temperature, preheating and drying section The steam that high-temperature flue gas radiating in 41 is down to 200 degree and produced with preheating and drying section 41, which enters in smoke duster 9, to be handled, place It is outer after reason is up to standard to arrange.
Sludge after being heated up in preheating and drying section 41 is continued to move downward by the driving of stirring vane 6, with hot blast below 700 degree of high-temperature flue gas that generator 8 is produced meet again, and the organic matter pyrolysis in sludge is into 500 degree of fuel gas(That is flue gas HYBRID RETORTING gas), the flue gas HYBRID RETORTING gas of generation inputs the dedusting of high temperature gas cleaning device 10 in retort section 42, passes through high temperature The purified gas of gas purifier 10 is passed through pyrolysis gas purification furnace 11 and isolates tar 12, then extracts heat out by gas fan 13 The saturation water-gas vented one's spleen in purification furnace 11, the saturation water-gas of extraction is at 40 degree or so, and a saturation water-gas part is outer to be supplied, and one Burnt in fractional saturation water-gas input heat blower 8, another part saturation water-gas is passed through the cooling section 43 in pyrolysis oven 4 The interior sludge carbon to after pyrolysis is cooled down.
4)Heat blower 8 is connected with the discharge pipe of blower fan 14, is blown by blower fan 14 into heat blower 8.In heat The high-temperature flue gas part produced after being burnt in air generator 8 is passed through after preheating and drying 41 drying and dehydratings of section in pyrolysis oven 4 Sludge, the retort section 42 that another part is passed through in pyrolysis oven 4 provides heat energy for pyrolysis.
5)The sludge carbon that retort section 42 in pyrolysis oven 4 is produced continues to move downwardly into cold by the driving of stirring vane 6 But section 43, are cooled to after 80 degree from the bottom of pyrolysis oven 4 in cooling section 43 and discharge.
6)Discharge, and removed through flue gas from the top of pyrolysis oven 4 after the flue gas radiating of preheating and drying section 41 in into pyrolysis oven 4 It is outer after the dedusting of dirt device 9 to arrange.
This technique uses three-stage pyrolysis oven(That is preheating and drying section, retort section and cooling section), preheating and drying section generation Steam and the flue gas of retort section directly mix independent discharge processing, after the carbonization gas that retort section is produced is by high temperature gas cleaning device The dust arrived again in pyrolysis gas purification furnace extraction tar, such tar just reaches technological standards, meets existing petrol and diesel oil production It is required that, the cooling section 43 that the saturation water-gas part after purification enters in pyrolysis oven 4 produces high temperature sludge carbon straight with retort section 42 Heat exchange is connect, sludge carbon radiates into 80 degree of discharge pyrolysis ovens 4, the destructive distillation of retort section 42 is participated in after the heat absorption of saturation water-gas.Saturation The high-temperature flue gas that water-gas is generated after heat blower 8, part high-temperature flue gas after retort section 42 by being directly entered preheating The steam mixing that dryer section 41 and preheating and drying section 41 are produced is discharged to smoke duster 9 and purified;The technique is in tar Dew point carries out dedusting above by high temperature gas cleaning device 10, it is ensured that the dust content of tar reaches regulation requirement.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to skill of the invention Art scheme is modified or equivalent substitution, and without departing from the objective and scope of technical solution of the present invention, it all should cover at this Among the right of invention.

Claims (2)

1. domestic sludge pyrolysis processing technique, it is characterised in that the technique comprises the following steps:
1) sludge pump is opened, sludge is sent into dewaterer by sludge pump, and dewaterer will input elevator after sludge dewatering, elevator will Sludge lifting after dehydration and the top for being input to pyrolysis oven;
2) along its axially arranged agitating shaft in pyrolysis oven, stirring vane, motor driving agitating shaft band are uniformly arranged on agitating shaft Dynamic stirring vane is stirred in pyrolysis oven;It is divided into three sections in pyrolysis oven from top to bottom, epimere is preheating and drying section, and stage casing is destructive distillation Section, hypomere is cooling section;
3) from furnace roof portion, by sealing addition sealing buffer bin, sealed batcher enters pyrolysis oven to the sludge after being dehydrated again Preheating and drying section, the sludge after dehydration is dried in the preheating and drying section of pyrolysis oven, and the sludge after dehydration passes through paddle Piece is moved downward, 700 degree high-temperature flue gas that heat blower below is produced enter in preheating and drying section be dehydrated after sludge Heat exchange is carried out, the sludge after being heated up in preheating and drying section is continued to move downward by stirring vane driving, with hot blast below 700 degree of high-temperature flue gas that generator is produced meet again, and the organic matter pyrolysis in retort section in dried sludge is into flammable Gas, the flue gas HYBRID RETORTING gas input high temperature gas cleaning device dedusting produced in retort section, passes through high temperature gas cleaning device Purified gas is passed through pyrolysis gas purification furnace and isolates tar, then extracts the saturation in pyrolysis gas purification furnace out by gas fan Water-gas, a saturation water-gas part is outer to be supplied, and is burnt in a part of saturation water-gas input heat blower, another part saturation Water-gas is passed through the cooling section in pyrolysis oven Nei and the sludge carbon after pyrolysis is cooled down;
4) the high-temperature flue gas part produced after being burnt in heat blower is passed through the preheating and drying section drying and dehydrating in pyrolysis oven Sludge afterwards, the retort section that another part is passed through in pyrolysis oven provides heat energy for pyrolysis;
5) the sludge carbon that the retort section in pyrolysis oven is produced is discharged after cooling section cooling from the bottom of pyrolysis oven;
6) discharged after the flue gas radiating for entering preheating and drying section in pyrolysis oven from the top of pyrolysis oven, and through smoke duster dedusting It is outer afterwards to arrange.
2. domestic sludge pyrolysis processing technique according to claim 1, it is characterised in that:The heat blower and blower fan Discharge pipe connection, blown by blower fan into heat blower.
CN201510544801.9A 2015-08-31 2015-08-31 Domestic sludge pyrolysis processing technique Expired - Fee Related CN105174678B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105505420B (en) * 2016-01-12 2018-09-28 神雾科技集团股份有限公司 Fast pyrolysis reactor
RU2660871C1 (en) * 2017-05-15 2018-07-10 Федор Иванович Лобанов Method of disposal of sludge domestic wastewater
CN112625719B (en) * 2020-12-30 2022-04-19 中国科学院广州能源研究所 System and method for recovering oil product by continuous multi-stage pyrolysis of oily sludge

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006225483A (en) * 2005-02-16 2006-08-31 Nippon Steel Corp Method for carbonizing biomass
CN101671099A (en) * 2009-09-30 2010-03-17 沈洪来 Combined sludge treatment method and dry distillation device applied by same
CN101880119A (en) * 2009-05-07 2010-11-10 陈丰 Comprehensive treatment technique for biochemical sludge and waste oil
CN102186948A (en) * 2008-10-20 2011-09-14 利伯提网络国际 Apparatus for carbonization and method of carbonization
CN102643001A (en) * 2012-05-17 2012-08-22 重庆大学 Fluidization heat accumulation type sludge low-temperature catalytic pyrolysis method and device thereof
CN102718383A (en) * 2012-06-06 2012-10-10 上海中科高等研究院 Pyrolysis device and method for in-situ conversion of carbon-containing resources by microwave-assisted pyrolysis
CN103539326A (en) * 2013-09-30 2014-01-29 珠海市伟力高生物科技有限公司 Method for comprehensive treatment of sludge
CN103693839A (en) * 2014-01-07 2014-04-02 北京神雾环境能源科技集团股份有限公司 Sludge treatment method and system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006225483A (en) * 2005-02-16 2006-08-31 Nippon Steel Corp Method for carbonizing biomass
CN102186948A (en) * 2008-10-20 2011-09-14 利伯提网络国际 Apparatus for carbonization and method of carbonization
CN101880119A (en) * 2009-05-07 2010-11-10 陈丰 Comprehensive treatment technique for biochemical sludge and waste oil
CN101671099A (en) * 2009-09-30 2010-03-17 沈洪来 Combined sludge treatment method and dry distillation device applied by same
CN102643001A (en) * 2012-05-17 2012-08-22 重庆大学 Fluidization heat accumulation type sludge low-temperature catalytic pyrolysis method and device thereof
CN102718383A (en) * 2012-06-06 2012-10-10 上海中科高等研究院 Pyrolysis device and method for in-situ conversion of carbon-containing resources by microwave-assisted pyrolysis
CN103539326A (en) * 2013-09-30 2014-01-29 珠海市伟力高生物科技有限公司 Method for comprehensive treatment of sludge
CN103693839A (en) * 2014-01-07 2014-04-02 北京神雾环境能源科技集团股份有限公司 Sludge treatment method and system

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