CN105174678B - Domestic sludge pyrolysis processing technique - Google Patents
Domestic sludge pyrolysis processing technique Download PDFInfo
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- 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
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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
- 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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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
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510544801.9A CN105174678B (en) | 2015-08-31 | 2015-08-31 | Domestic sludge pyrolysis processing technique |
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| CN201510544801.9A CN105174678B (en) | 2015-08-31 | 2015-08-31 | Domestic sludge pyrolysis processing technique |
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| CN105174678A CN105174678A (en) | 2015-12-23 |
| CN105174678B true CN105174678B (en) | 2017-09-22 |
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| CN201510544801.9A Expired - Fee Related CN105174678B (en) | 2015-08-31 | 2015-08-31 | Domestic sludge pyrolysis processing technique |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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| 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 |
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2015
- 2015-08-31 CN CN201510544801.9A patent/CN105174678B/en not_active Expired - Fee Related
Patent Citations (8)
| 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 |
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Effective date of registration: 20151216 Address after: 230088 Anhui city of Hefei province high tech Zone Changhe by a 10 floor building room 1005 Applicant after: ANHUI ZHUOXIN CLEAN ENERGY TECHNOLOGY CO., LTD. Address before: Jiulongpo from four Chongqing Science Park Road 400050, No. 223 -6-1 2 Applicant before: CHONGQING DAN XIA ENERGY SAVING TECHNOLOGY CO., LTD. |
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