CN107987890A - Organic sludge pyrolysis gasification system and pyrolysis gasification method - Google Patents
Organic sludge pyrolysis gasification system and pyrolysis gasification method Download PDFInfo
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- CN107987890A CN107987890A CN201711461102.3A CN201711461102A CN107987890A CN 107987890 A CN107987890 A CN 107987890A CN 201711461102 A CN201711461102 A CN 201711461102A CN 107987890 A CN107987890 A CN 107987890A
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- 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
- C10J3/58—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels combined with pre-distillation of the fuel
- C10J3/60—Processes
- C10J3/64—Processes with decomposition of the distillation products
- C10J3/66—Processes with decomposition of the distillation products by introducing them into the gasification zone
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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
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- 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
- C10B47/18—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion with moving charge
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- 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
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
-
- 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
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1003—Waste materials
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/30—Aromatics
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- 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
- C10J2300/0916—Biomass
- C10J2300/0923—Sludge, e.g. from water treatment plant
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- 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
- C10J2300/0953—Gasifying agents
- C10J2300/0959—Oxygen
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- 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
- C10J2300/0953—Gasifying agents
- C10J2300/0973—Water
- C10J2300/0976—Water as steam
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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
- 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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- Environmental & Geological Engineering (AREA)
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Abstract
The invention discloses organic sludge pyrolysis gasification system and pyrolysis gasification method, wherein, pyrolysis gasification system includes：Organic sludge pyrolysis gasification furnace, high-temperature dust removing device and waste heat boiler, superposed pyrolysis chamber and the gasification chamber positioned at lower part are defined in organic sludge pyrolysis gasification furnace, wherein, it is pyrolyzed in chamber and is disposed with multiple heat accumulation type radiant tubes, top has dry organic sludge entrance；The indoor lower part of gasification chamber is provided with oxygen coil pipe and steam pipe coil, has multiple oxygen through holes on oxygen coil pipe, has multiple steam passage holes on steam pipe coil, and the indoor bottom of gasification chamber is exported with lime-ash；There is high-temperature oil gas outlet, high-temperature dust removing device is connected with high-temperature oil gas outlet on side wall between pyrolysis chamber and gasification chamber；Waste heat boiler is connected with the high temperature purification oil gas vent of high-temperature dust removing device.One step of the clean and effective conversion during organic sludge treatment can be finally realized using the system.
Description
Technical field
The invention belongs to sludge treatment field, and specifically, the present invention relates to organic sludge pyrolysis gasification system and pyrolysis
Gasification process.
Background technology
Sludge treating method mainly has three kinds at present：Landfill, land use, burning.Landfill is traditional Treatment of Sludge side
Formula, since the place that can produce secondary pollution and suitable Sludge landfill is more and more limited, the application of Sludge landfill has received
Limitation.Land use mainly includes improvement in place such as agricultural sludge, forest and gardening, discarded mining site etc., due to containing in sludge
There is venomous injurant, land use may cause soil or water pollution.Sludge incineration is to apply wide disposal in recent years
Mode, the advantage is that the minimizing that can realize sludge to greatest extent, shortcoming is to easily cause secondary pollution, and having in sludge
Machine component utilization rate is low.Two ways is equipped with sludge incineration：When directly burn, i.e., it is dewatered sludge incorporation coal or oil etc. is auxiliary
Combustion-supporting material after-combustion.Second, sludge burns again after desiccation, i.e., dewatered sludge burns after further carrying out drying and other treatment.
Municipal sludge is both pollutant and a kind of resource.Contain large amount of organic matter in sludge, there is fuel value.I
The dewatered sludge Treatment and recovery of state is using technology still without one unified thinking of formation.Research safety, efficiently,
Economic sludge treatment technique, realizes the minimizing of sludge, stabilisation, innoxious as the hot issue widely paid close attention to.Sludge
Pyrolysis is to utilize the thermal instability of organic matter in sludge, and the pyrolysis processing technique of sludge mainly includes rotary kiln, fixation at present
The techniques such as bed, fluid bed, are divided into according to mode of heating and directly heating and indirectly heat, hot load is generally taken due to directly heating
Body, therefore process can be related to the heating of heat carrier, separation etc., technological process is complicated；And take the destructive distillation side of indirect heating manner
Formula, the thermal efficiency is not high, and disposal ability is small.
The content of the invention
It is contemplated that solve at least some of the technical problems in related technologies.For this reason, the present invention
One purpose is proposition organic sludge pyrolysis gasification system and pyrolysis gasification method, can be finally real using the system and method
One step of clean and effective conversion in existing machine sludge handling process.
According to an aspect of the present invention, the present invention proposes organic sludge pyrolysis gasification system, real according to the present invention
Example is applied, which includes：
Organic sludge pyrolysis gasification furnace, define in the organic sludge pyrolysis gasification furnace superposed pyrolysis chamber and
Gasification chamber positioned at lower part, wherein,
Multiple heat accumulation type radiant tubes are disposed with the pyrolysis chamber, the top of the pyrolysis chamber has dry organic dirt
Mud entrance；
The indoor lower part of gasification chamber is provided with oxygen coil pipe and steam pipe coil, has multiple oxygen on the oxygen coil pipe
Vent hole, has multiple steam passage holes on the steam pipe coil, and the indoor bottom of gasification chamber is exported with lime-ash；
There is high-temperature oil gas outlet on side wall between the pyrolysis chamber and the gasification chamber,
High-temperature dust removing device, the high-temperature dust removing device has high-temperature oil gas import and high temperature purification oil gas vent, described
High-temperature oil gas import is connected with high-temperature oil gas outlet；
Waste heat boiler, the waste heat boiler have high temperature purification oil and gas import, pyrolysis gas outlet, pyrolysis oil export, water into
Mouth and steam (vapor) outlet, the high temperature purification oil and gas import are connected with the high temperature purification oil gas vent.
Using the organic sludge pyrolysis gasification system of the above embodiment of the present invention, be dried to a degree of organic sludge by
Drying organic sludge entrance at the top of organic sludge pyrolysis gasification furnace enters pyrolysis chamber, under heat accumulation type radiant tube heating condition
Generation pyrolytic reaction, obtains pyrolysis oil gas and semicoke, and pyrolysis oil gas exports in the middle part of furnace body, and the semicoke of generation enters under furnace body
The gasification chamber in portion is contacted with oxygen and steam occurs combustion gasification reaction, produces coal gas of high temperature, main component is CO and H2, gas
It is strong exothermal reaction to change reaction, semicoke counter current contacting of the coal gas of high temperature in uphill process with whereabouts, and gas-solid exchanges heat.Finally
Organic sludge high-efficiency cleaning is converted into rich in H2、CO、CH4Unstripped gas, while the aromatic hydrocarbons oil product of by-product high added value.By
In the imperfect combustion heat release of semicoke, heat, efficiency higher are provided for pyrolysis.Therefore, organic dirt of the above embodiment of the present invention
Mud pyrolysis gasification system finally realizes one step of the clean and effective conversion of organic sludge.
In addition, organic sludge pyrolysis gasification system according to the above embodiment of the present invention can also have skill additional as follows
Art feature：
In some embodiments of the invention, the steam (vapor) outlet is connected with the steam inlet.
In some embodiments of the invention, the pyrolysis chamber accounts for whole height in the organic sludge pyrolysis gasification furnace
1/3-1/2.
In some embodiments of the invention, the steam pipe coil and the oxygen coil pipe are horizontally set on the gasification
The indoor lower part of chamber.
In some embodiments of the invention, the steam pipe coil is located at the top of the oxygen coil pipe.
In some embodiments of the invention, the organic sludge pyrolysis gasification system of above-described embodiment further comprises：Heat
Air purifying apparatus is solved, the pyrolysis air purifying apparatus is connected with the pyrolysis gas outlet.
According to another aspect of the present invention, the present invention proposes the organic sludge pyrolytic gasification system using preceding embodiment
The method of system processing organic sludge, according to an embodiment of the invention, this method includes：
Low order organic sludge is supplied to the organic sludge pyrolysis gasification furnace by the organic sludge entrance, is made described
Low order organic sludge is pyrolyzed in the pyrolysis chamber, obtains high-temperature oil gas and semicoke；The semicoke is set to enter the gasification
Contact to form eddy flow fluidized state with steam and oxygen in chamber, and combustion gasification reaction occurs, produce coal gas of high temperature；
The high-temperature oil gas is passed through in the high-temperature dust removing device and carries out purified treatment, to obtain high temperature purification oil
Gas；
The high temperature purification oil gas is supplied to waste heat recovery is carried out in the waste heat boiler, to obtain pyrolysis oil and heat
Vent one's spleen, and produce vapor.
Using the organic sludge pyrolysis gasification method of the above embodiment of the present invention, be dried to a degree of organic sludge by
Drying organic sludge entrance at the top of organic sludge pyrolysis gasification furnace enters pyrolysis chamber, under heat accumulation type radiant tube heating condition
Generation pyrolytic reaction, obtains pyrolysis oil gas and semicoke, and pyrolysis oil gas exports in the middle part of furnace body, and the semicoke of generation enters under furnace body
The gasification chamber in portion is contacted with oxygen and steam occurs combustion gasification reaction, produces coal gas of high temperature, main component is CO and H2, gas
It is strong exothermal reaction to change reaction, semicoke counter current contacting of the coal gas of high temperature in uphill process with whereabouts, and gas-solid exchanges heat.Finally
Organic sludge high-efficiency cleaning is converted into rich in H2、CO、CH4Unstripped gas, while the aromatic hydrocarbons oil product of by-product high added value.By
In the imperfect combustion heat release of semicoke, heat, efficiency higher are provided for pyrolysis.Therefore, organic dirt of the above embodiment of the present invention
Mud pyrolysis gasification method finally realizes one step of the clean and effective conversion of organic sludge.
In addition, organic sludge pyrolysis gasification method according to the above embodiment of the present invention can also have skill additional as follows
Art feature：
In some embodiments of the invention, the temperature that the pyrolysis chamber is pyrolyzed is 500-700 degrees Celsius.
In some embodiments of the invention, the temperature for combustion gasification reaction being carried out in the gasification chamber is 950-1100
Degree Celsius.
In some embodiments of the invention, the temperature of the high-temperature oil gas is 600-800 degrees Celsius.
In some embodiments of the invention, the organic sludge pyrolysis gasification method of above-described embodiment further comprises：Will
The vapor is supplied to the gasification chamber by the vapor import, and the combustion gasification for the semicoke reacts.
In some embodiments of the invention, the organic sludge pyrolysis gasification method of above-described embodiment further comprises：Will
The pyrolysis gas is passed through pyrolysis air purifying apparatus and carries out purified treatment, to obtain purified gas.
Brief description of the drawings
Fig. 1 is the structure diagram of the organic sludge pyrolysis gasification system of one embodiment according to the present invention.
Fig. 2 is the structure diagram of the organic sludge pyrolysis gasification system of another embodiment according to the present invention.
Embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or has the function of same or like element.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
According to an aspect of the present invention, the present invention proposes organic sludge pyrolysis gasification system, real according to the present invention
Example is applied, as shown in Figure 1, the organic sludge pyrolysis gasification system includes：Organic sludge pyrolysis gasification furnace 100, high-temperature dust removing device
200 and waste heat boiler 300.
According to a particular embodiment of the invention, superposed heat is defined in the organic sludge pyrolysis gasification furnace 100
Chamber 110 and the gasification chamber 120 positioned at lower part are solved, wherein, it is disposed with multiple heat accumulation type radiant tubes in the pyrolysis chamber 110
111, the top of the pyrolysis chamber 110 has dry organic sludge entrance 112；
Lower part in the gasification chamber 120 is provided with oxygen coil pipe 121 and steam pipe coil 122, on the oxygen coil pipe
With multiple oxygen through hole (not shown), there is multiple steam passage holes (not shown), the gasification chamber on the steam pipe coil
Bottom in 120 has lime-ash outlet 123；
There is high-temperature oil gas outlet 130 on side wall between the pyrolysis chamber 110 and the gasification chamber 120,
The high-temperature dust removing device 200 has high-temperature oil gas import 210 and high temperature purification oil gas vent 220, the high temperature
Oil and gas import 210 is connected with high-temperature oil gas outlet 130；
The waste heat boiler 300 has high temperature purification oil and gas import 310, pyrolysis gas outlet 320, pyrolysis oil export 330, water
Import 340 and steam (vapor) outlet 350, the high temperature purification oil and gas import 310 are connected with the high temperature purification oil gas vent 220.
Using the organic sludge pyrolysis gasification system of the above embodiment of the present invention, be dried to a degree of organic sludge by
Drying organic sludge entrance at the top of organic sludge pyrolysis gasification furnace enters pyrolysis chamber, under heat accumulation type radiant tube heating condition
Generation pyrolytic reaction, obtains pyrolysis oil gas and semicoke, and pyrolysis oil gas exports in the middle part of furnace body, and the semicoke of generation enters under furnace body
The gasification chamber in portion is contacted with oxygen and steam occurs combustion gasification reaction, produces coal gas of high temperature, main component is CO and H2, gas
It is strong exothermal reaction to change reaction, semicoke counter current contacting of the coal gas of high temperature in uphill process with whereabouts, and gas-solid exchanges heat.Finally
Organic sludge high-efficiency cleaning is converted into rich in H2、CO、CH4Unstripped gas, while the aromatic hydrocarbons oil product of by-product high added value.By
In the imperfect combustion heat release of semicoke, heat, efficiency higher are provided for pyrolysis.Therefore, organic dirt of the above embodiment of the present invention
Mud pyrolysis gasification system finally realizes one step of the clean and effective conversion of organic sludge.
The organic sludge pyrolysis gasification system of the specific embodiment of the invention is described in detail below with reference to Fig. 1.
Organic sludge pyrolysis gasification furnace
According to a particular embodiment of the invention, superposed heat is defined in the organic sludge pyrolysis gasification furnace 100
Chamber 110 and the gasification chamber 120 positioned at lower part are solved, wherein, it is disposed with multiple heat accumulation type radiant tubes in the pyrolysis chamber 110
111, the top of the pyrolysis chamber 110 has dry organic sludge entrance 112；Lower part in the gasification chamber 120 is set
Aerobic gas coil pipe 121 and steam pipe coil 122, have multiple oxygen through hole (not shown), the steam disc on the oxygen coil pipe
There are multiple steam passage holes (not shown), the bottom in the gasification chamber 120 has lime-ash outlet 123 on pipe；Positioned at described
Being pyrolyzed on the side wall between chamber 110 and the gasification chamber 120 has high-temperature oil gas outlet 130.
Thus, it is dried to drying organic dirt of a degree of organic sludge by the top of organic sludge pyrolysis gasification furnace 100
Mud entrance 112 enters pyrolysis chamber 110, and raw pyrolytic reaction is issued in 111 heating condition of heat accumulation type radiant tube, obtains pyrolysis oil gas
And semicoke, high-temperature oil gas outlet 130 export of the pyrolysis oil gas in the middle part of furnace body, the semicoke of generation enter the gasification in lower portion of furnace body
The oxygen and steam being passed through in chamber 120 with oxygen inlet 121 and steam inlet 122, which contact, occurs combustion gasification reaction, produces
Coal gas of high temperature, main component are CO and H2, gasification reaction is strong exothermal reaction, coal gas of high temperature in uphill process with whereabouts half
Burnt counter current contacting, gas-solid exchange heat.Most organic sludge high-efficiency cleaning is converted into rich in H at last2、CO、CH4Unstripped gas, at the same time
The aromatic hydrocarbons oil product of by-product high added value, and by 130 export of high-temperature oil gas outlet.Due to the imperfect combustion heat release of semicoke, it is
Pyrolysis provides heat, efficiency higher.Therefore, the organic sludge pyrolysis gasification system of the above embodiment of the present invention has finally realized
One step of the clean and effective conversion of machine sludge.
Organic sludge reaction process in organic sludge pyrolysis gasification furnace：
(1) oxidation gasification reaction of the organic matter containing charcoal is a kind of complicated a variety of chemical reaction processes, and reaction can substantially divide
Three steps carry out：The first step, the cracking of the organic matter containing charcoal and the burning of volatile matter, second step burning and gasification, i.e., coal tar with oxygen
Gas, which reacts, generates CO and CO2Release amount of heat while, and with vapor and CO2React generation H2And CO, in gas
Xiang Zhong, H2Combustion reaction occurs with remaining oxygen again with CO, while releases substantial amounts of heat.3rd step gasification reaction.Reacting
In the case of oxygen being practically free of in thing, coal, methane and vapor, CO2Generation gasification reaction, generates hydrogen and CO.
(2) the bottom semicoke discharge outlet of organic sludge pyrolysis gasification furnace, has been sequentially arranged vapor through hole from bottom to up
With oxygen through hole, organic sludge is by the hyperthermia radiation heating zone on pyrolysis chamber top, organic cracking, volatile matter in sludge
Removing, obtains semicoke, is aoxidized successively by vapor, oxygen inlet in semicoke dropping process, it is strong that high-temperature semi-coke meets oxygen generation
Oxidation reaction, releases big calorimetric, while obtains CO2, CO, high-temperature flue gas reacts chance vapor, gasification reaction, generation occurs upwards
CO and H2。
(3) oxygen coil pipe 121 and steam pipe coil 122 be separately positioned on two horizontal planes be primarily intended to make semicoke anti-
Answer process controllable, reduce to the greatest extent char Gasification reaction later stage oxygen influence so that gasification reaction generation CO as much as possible with
H2, improve the formation efficiency for going back Primordial Qi.
According to a particular embodiment of the invention, in organic sludge pyrolysis gasification furnace 100, superposed pyrolysis chamber occupies
The 1/3-1/2 of whole height in machine pyrolyzing sludge gasification stove.Thus according to need to be pyrolyzed the ratio of chamber and gasification chamber into
Row division is coordinated so that organic sludge can be pyrolyzed completely, converted so as to fulfill the efficient single step of organic sludge, improved oil gas
Yield.
According to a particular embodiment of the invention, the lower part in the gasification chamber 120 is provided with oxygen coil pipe 121 and steam
Coil pipe 122, has multiple oxygen through hole (not shown) on the oxygen coil pipe, has multiple steam passage holes on the steam pipe coil
(not shown).Thus, by setting the form of coil pipe, and multiple ventholes are set on coil pipe, can significantly improve oxygen and
The dispersion degree of steam, and then improve the efficiency and the uniformity of combustion gasification reaction.
According to a particular embodiment of the invention, the caliber of oxygen coil pipe 121 and steam pipe coil 122 can be 10-20cm, oxygen
The aperture of vent hole and steam passage holes can be 5-10mm, and the distance before two neighboring oxygen through hole or steam passage holes is 20-
30mm.It is possible thereby to equably supply oxygen and steam into gasification chamber, the combustion gasification reaction efficiency of semicoke is improved.Can be real
Existing oxygen, the uniform air distribution of steam, ensure combustion gasification efficiency.
According to a particular embodiment of the invention, the steam pipe coil 122 and the oxygen feeding disk 121 are managed horizontally disposed
Lower part in the gasification chamber 120, and the steam pipe coil is located at the top of the oxygen coil pipe.According to the present invention
Specific example, oxygen coil pipe 121 or oxygen through hole thereon export 123 about 1/8-1/6H away from hot lime-ash, steam pipe coil 122 or
It is about 1/8-1/6H that the steam passage holes of person thereon, which are located on oxygen coil pipe 121, and H is the height of pyrolysis gasification furnace.Thus, it is possible to
On the premise of fully ensuring that oxygen and steam are not come out of the stove in vitro by ash and clinker zone, increase oxygen and steam and semicoke to greatest extent
The time inversely contacted, so that the coal gas of high temperature that the semicoke of bottom produces after the combustion gasification reaction of exothermicity occurs exists
When rising to top, play the role of heating to semicoke, the volatile matter for not being pyrolyzed completion in semicoke is further subjected to extraction production
Raw high-temperature oil gas, improves its conversion ratio and gas yield.
According to a particular embodiment of the invention, since the burnup gasification reaction of semicoke is exothermic reaction, and then can utilize
The heat that coal-char combustion gasification produces directly applies to semicoke or even is pyrolyzed the organic sludge not being pyrolyzed completely in chamber, Jin Erke
Further to reduce energy consumption.
High-temperature dust removing device
According to a particular embodiment of the invention, high-temperature dust removing device 200 has high-temperature oil gas import 210 and high temperature purification oil
Gas outlet 220, high-temperature oil gas import 210 are connected with high-temperature oil gas outlet 130.Thus, high-temperature oil gas is passed through high-temperature dust removal dress
Put and purified treatment is carried out in 200, to obtain high temperature purification oil gas.And then easy to subsequently carry out separating treatment to high-temperature oil gas.
Waste heat boiler
According to a particular embodiment of the invention, waste heat boiler 300 has high temperature purification oil and gas import 310, pyrolysis gas outlet
320th, oil export 330, water inlet 340 and steam (vapor) outlet 350, high temperature purification oil and gas import 310 is pyrolyzed with high temperature purification oil gas to go out
Mouth 220 is connected.Thus, high temperature purification oil gas is supplied to waste heat recovery is carried out in waste heat boiler, to obtain pyrolysis oil and heat
Vent one's spleen, and produce vapor.And then the heat of high temperature purification oil gas can be effectively recycled, avoid energy waste.
According to a particular embodiment of the invention, the steam (vapor) outlet 350 of waste heat boiler 300 and organic sludge pyrolysis gasification furnace
100 steam pipe coil 122 is connected.It is possible thereby to the steam for utilizing the heat for recycling high temperature purification oil gas to produce is used for organic dirt
Combustion gasification reaction of the mud in organic sludge pyrolysis gasification furnace 100, and then the heat for the high-temperature oil gas that organic sludge is produced
Recycling is reacted for the combustion gasification of itself, is eliminated outside and is additionally supplied steam, reduces the processing energy consumption of organic sludge.
It is pyrolyzed air purifying apparatus
According to a particular embodiment of the invention, as shown in Fig. 2, the organic sludge pyrolysis gasification system of above-described embodiment is into one
Step includes：Air purifying apparatus 400 is pyrolyzed, pyrolysis air purifying apparatus 400 is connected with pyrolysis gas outlet 320.It is possible thereby to further
Purified treatment is carried out to the pyrolysis gas after cooling, and then obtains purified gas product.
According to a particular embodiment of the invention, as shown in Fig. 2, the organic sludge pyrolysis gasification system of above-described embodiment is into one
Step includes：Oily-water seperating equipment 500, oily-water seperating equipment 500 are connected with the pyrolysis oil export 330 of waste heat boiler 300, thus may be used
The water in pyrolysis oil to be separated, and then obtain pure pyrolysis oil product.
According to another aspect of the present invention, the present invention proposes the organic sludge pyrolytic gasification system using preceding embodiment
The method of system processing organic sludge.
According to an embodiment of the invention, this method includes：By low order organic sludge by the organic sludge entrance supply to
In the organic sludge pyrolysis gasification furnace, the low order organic sludge is pyrolyzed in the pyrolysis chamber, obtain high temperature oil
Gas and semicoke；Make the semicoke enter in the gasification chamber to contact to form eddy flow fluidized state with steam and oxygen, and occur
Combustion gasification reacts, and produces coal gas of high temperature；The high-temperature oil gas is passed through in the high-temperature dust removing device and carries out purified treatment, with
Just high temperature purification oil gas is obtained；The high temperature purification oil gas is supplied to carrying out waste heat recovery in the waste heat boiler, so as to
To pyrolysis oil and pyrolysis gas, and produce vapor.
Using the organic sludge pyrolysis gasification method of the above embodiment of the present invention, be dried to a degree of organic sludge by
Drying organic sludge entrance at the top of organic sludge pyrolysis gasification furnace enters pyrolysis chamber, under heat accumulation type radiant tube heating condition
Generation pyrolytic reaction, obtains pyrolysis oil gas and semicoke, and pyrolysis oil gas exports in the middle part of furnace body, and the semicoke of generation enters under furnace body
The gasification chamber in portion is contacted with oxygen and steam occurs combustion gasification reaction, produces coal gas of high temperature, main component is CO and H2, gas
It is strong exothermal reaction to change reaction, and semicoke counter current contacting of the coal gas of high temperature in uphill process with whereabouts, gas-solid exchanges heat, into one
The volatile matter for not being pyrolyzed completion in semicoke is carried out extraction and produces oil gas by step.Most organic sludge high-efficiency cleaning is converted into and is rich at last
H2、CO、CH4Unstripped gas, while the aromatic hydrocarbons oil product of by-product high added value.Due to the imperfect combustion heat release of semicoke, for pyrolysis
Heat, efficiency higher are provided.Therefore, the organic sludge pyrolysis gasification method of the above embodiment of the present invention finally realizes organic dirt
One step of the clean and effective conversion of mud.
It is organic using the organic sludge pyrolysis gasification system processing of preceding embodiment to the specific embodiment of the invention below
The method of sludge is described in detail.
According to a particular embodiment of the invention, first, low order organic sludge is supplied to institute by the organic sludge entrance
State in organic sludge pyrolysis gasification furnace, the low order organic sludge is pyrolyzed in the pyrolysis chamber, obtain high-temperature oil gas
And semicoke；Make the semicoke enter in the gasification chamber to contact to form eddy flow fluidized state with steam and oxygen, and fire
Gasification reaction is burnt, produces coal gas of high temperature.
Thus, it is dried to drying organic dirt of a degree of organic sludge by the top of organic sludge pyrolysis gasification furnace 100
Mud entrance 112 enters pyrolysis chamber 110, and raw pyrolytic reaction is issued in 111 heating condition of heat accumulation type radiant tube, obtains pyrolysis oil gas
And semicoke, high-temperature oil gas outlet 130 export of the pyrolysis oil gas in the middle part of furnace body, the semicoke of generation enter the gasification in lower portion of furnace body
The oxygen and steam being passed through in chamber 120 with oxygen inlet 121 and steam inlet 122, which contact, occurs combustion gasification reaction, produces
Coal gas of high temperature, main component are CO and H2, gasification reaction is strong exothermal reaction, coal gas of high temperature in uphill process with whereabouts half
Burnt counter current contacting, gas-solid exchange heat, and the volatile matter for not being pyrolyzed completion in semicoke further is carried out extraction produces oil gas.Finally
Organic sludge high-efficiency cleaning is converted into rich in H2、CO、CH4Unstripped gas, while the aromatic hydrocarbons oil product of by-product high added value, and
By 130 export of high-temperature oil gas outlet.Due to the imperfect combustion heat release of semicoke, heat, efficiency higher are provided for pyrolysis.Therefore,
The single step that can realize organic sludge using organic sludge pyrolysis gasification furnace 100 converts, and significantly improves efficiency and cleannes,
Reduce energy consumption and pollution.
According to a particular embodiment of the invention, organic sludge needs to be previously dried processing, its moisture is down to 15-
20wt%, and then pyrolysis efficiency can be improved.
According to a particular embodiment of the invention, dry organic sludge is in pyrolysis chamber, in heat accumulation type radiant tube fire-bar
Part issues raw pyrolytic reaction, obtains pyrolysis oil gas and semicoke.Specifically, the temperature that dry organic sludge is pyrolyzed in pyrolysis chamber
Spend for 500-700 degrees Celsius.It is possible thereby to organic sludge in optimal oil-producing temperature, improves the hydrocarbon yield of system.
According to a particular embodiment of the invention, the semicoke being pyrolyzed enter lower portion of furnace body gasification chamber and oxygen and
Combustion gasification reaction occurs for steam contact.Specifically, the temperature that combustion gasification reaction occurs for semicoke is 950-1100 degrees Celsius.By
It is CO and H that this, which can make it that semicoke is fully converted into main component,2Generation coal gas of high temperature.Simultaneously as lower part gasification chamber
The reaction temperature of indoor generation is more preferable, and the heat that coal-char combustion gasification produces can be utilized to directly apply to semicoke, or even should
For being pyrolyzed in the organic sludge not being pyrolyzed completely in chamber, and then further reduce energy consumption.
According to a particular embodiment of the invention, the high-temperature oil gas is passed through in high-temperature dust removing device 200 and carried out at purification
Reason, to obtain high temperature purification oil gas.
According to a particular embodiment of the invention, by the temperature of the high-temperature oil gas of discharge in organic sludge pyrolysis gasification furnace 100
600-800 degrees Celsius can be reached.The high temperature purification oil gas temperature obtained after high-temperature dust removing device 200 carries out purified treatment
Probably at 600-750 degrees Celsius.Thus its heat is recycled, such as can be recycled using waste heat boiler, and obtained
Vapor.
For this reason, according to a particular embodiment of the invention, finally, high temperature purification oil gas can be supplied to waste heat boiler 300
Interior carry out waste heat recovery, to obtain pyrolysis oil and pyrolysis gas, and produces vapor.And then it can effectively recycle high temperature purification oil
The heat of gas, avoids energy waste.
According to a particular embodiment of the invention, waste heat recovery is carried out to high temperature purification oil gas can to produce 200-300 Celsius
The high-temperature steam of degree.
According to a particular embodiment of the invention, the pyrolysis gasification method of above-described embodiment further comprises：By waste heat boiler
The vapor that the heat of recycling high-temperature oil gas produces is supplied to gasification chamber by vapor import, the combustion gasification for semicoke
Reaction.It is pyrolyzed it is possible thereby to which the steam that the heat for recycling high temperature purification oil gas produces will be utilized to be used for organic sludge in organic sludge
Combustion gasification reaction in gasification furnace, and then the heat recovery for the high-temperature oil gas that organic sludge is produced is used for the combustion gas of itself
Change reaction, eliminate outside and additionally supply steam, reduce the processing energy consumption of organic sludge.
According to a particular embodiment of the invention, the pyrolysis gasification method of above-described embodiment further comprises：Pyrolysis gas is led to
Enter to be pyrolyzed air purifying apparatus 400 and carry out purified treatment, to obtain purified gas.It is possible thereby to further to the pyrolysis gas after cooling
Purified treatment is carried out, and then obtains purified gas product.
According to a particular embodiment of the invention, the pyrolysis gasification method of above-described embodiment further comprises：Pyrolysis oil is led to
Enter and water-oil separating is carried out in oily-water seperating equipment 500, it is possible thereby to which the water in pyrolysis oil is separated, and then obtain pure pyrolysis
Oil product.
Organic sludge pyrolysis gasification system and pyrolysis gasification method according to the above embodiment of the present invention at least have following
One of advantage：
(1) heat produced using coal-char combustion gasification directly applies to semicoke, or even applied to not complete in pyrolysis chamber
In the organic sludge being pyrolyzed entirely, and then further reduce energy consumption.
(2) can high efficient and flexible control pyrolysis, gasification degree, oil, gas, char yeild can adjust significantly, market adaptability
It is stronger.
(3) the high characteristic of middle organic sludge high volatile, activity is preferably make use of, at utmost turns middle organic sludge
Turn to petroleum and gas resources.
(4) consuming fuel quantity reduces, and investment operating cost reduces, and economy is more preferable.
Embodiment
By taking certain municipal sludge as an example, dried municipal sludge main character such as following table：
Table 1
| Project | Unit | Numerical value | Remarks |
| Quan Shui | % | 10 | As-received |
| Volatile matter | % | 35.7 | As-received |
| Ash content | % | 46.5 | As-received |
The drying organic sludge that moisture is 15% is added at the top of regenerative chamber organic sludge pyrolysis gasification furnace, heat accumulating type spoke
Pipe is penetrated using fuel gas with low heat value as unstripped gas, pyrolysis temperature is 600 DEG C.Middle low temperature solid-state organic matter falls organic in heat accumulating type
Pyrolyzing sludge gasification stove lower part is contacted with steam with oxygen, combustion gasification reaction occurs, temperature is at 1000 DEG C.Solid organic fires
Burn the low coal gas of high temperature rising of gasification generation and progress gas-solid heat exchange is contacted with middle low temperature solid-state organic matter, further by solid organic
Volatile matter carries out extraction and produces oil gas.Heat accumulating type organic sludge pyrolysis gasification furnace gas outlet temperature is removed at 700 DEG C into high temperature
Entrainment self raising flour dirt is removed in dirt device.Low coal gas of high temperature temperature is exported at 650 DEG C from hot precipitator, into coal gas waste heat recovery
Device, 300 DEG C of steam are produced as under gasifying agent feeding regenerative chamber organic sludge pyrolysis gasification furnace with carrying out heat exchange into soft water
Portion.Through exchanging heat, raw coke oven gas enters raw coke oven gas cleaning system, produces grease and enters oil-water recovering device recycling tar as product.
Table 2
| Product | Yield % (coal base) |
| Lime-ash | 50.6 |
| Tar | 4.6 |
| Coal gas | 40.8 |
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms is not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
Combined in an appropriate manner in a or multiple embodiments or example.In addition, without conflicting with each other, the technology of this area
Different embodiments or example described in this specification and different embodiments or exemplary feature can be combined by personnel
And combination.
Although the embodiment of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
- A kind of 1. organic sludge pyrolysis gasification system, it is characterised in that including：Organic sludge pyrolysis gasification furnace, superposed pyrolysis chamber is defined in the organic sludge pyrolysis gasification furnace and is located at The gasification chamber of lower part, wherein,Multiple heat accumulation type radiant tubes are disposed with the pyrolysis chamber, there is dry organic sludge to enter at the top of the pyrolysis chamber Mouthful；The indoor lower part of gasification chamber is provided with oxygen coil pipe and steam pipe coil, on the oxygen coil pipe there are multiple oxygen to lead to Hole, has multiple steam passage holes on the steam pipe coil, and the indoor bottom of gasification chamber is exported with lime-ash；There is high-temperature oil gas outlet on side wall between the pyrolysis chamber and the gasification chamber,High-temperature dust removing device, the high-temperature dust removing device have high-temperature oil gas import and high temperature purification oil gas vent, the high temperature Oil and gas import is connected with high-temperature oil gas outlet；Waste heat boiler, the waste heat boiler have high temperature purification oil and gas import, pyrolysis gas outlet, pyrolysis oil export, water inlet and Steam (vapor) outlet, the high temperature purification oil and gas import are connected with the high temperature purification oil gas vent.
- 2. organic sludge pyrolysis gasification system according to claim 1, it is characterised in that the steam (vapor) outlet and the steaming Vapour coil pipe is connected.
- 3. organic sludge pyrolysis gasification system according to claim 1, it is characterised in that the pyrolysis chamber, which accounts for, described to be had The 1/3-1/2 of whole height in machine pyrolyzing sludge gasification stove.
- 4. organic sludge pyrolysis gasification system according to claim 1, it is characterised in that the steam pipe coil and the oxygen Gas coil pipe is horizontally set on the indoor lower part of the gasification chamber,Optionally, the steam pipe coil is located at the top of the oxygen coil pipe.
- 5. organic sludge pyrolysis gasification system according to claim 1, it is characterised in that further comprise：Air purifying apparatus is pyrolyzed, the pyrolysis air purifying apparatus is connected with the pyrolysis gas outlet.
- 6. a kind of method using any one of the claim 1-5 organic sludge pyrolysis gasification system processing organic sludges, its It is characterized in that, including：Low order organic sludge is supplied to the organic sludge pyrolysis gasification furnace by the organic sludge entrance, makes the low order Organic sludge is pyrolyzed in the pyrolysis chamber, obtains high-temperature oil gas and semicoke；The semicoke is set to enter the gasification chamber It is interior to contact to form eddy flow fluidized state with steam and oxygen, and combustion gasification reaction occurs, produce coal gas of high temperature；The high-temperature oil gas is passed through in the high-temperature dust removing device and carries out purified treatment, to obtain high temperature purification oil gas；The high temperature purification oil gas is supplied to waste heat recovery is carried out in the waste heat boiler, to obtain pyrolysis oil and pyrolysis Gas, and produce vapor.
- 7. according to the method described in claim 6, it is characterized in that, the temperature that the pyrolysis chamber is pyrolyzed is 500-700 Degree Celsius,Optionally, the temperature that combustion gasification reaction is carried out in the gasification chamber is 950-1100 degrees Celsius.
- 8. according to the method described in claim 6, it is characterized in that, the temperature of the high-temperature oil gas is 600-800 degrees Celsius.
- 9. according to the method described in claim 6, it is characterized in that, further comprise：By the vapor by the vapor Import is supplied to the gasification chamber, and the combustion gasification for the semicoke reacts.
- 10. according to the method described in claim 6, it is characterized in that, further comprise：It is net that the pyrolysis gas is passed through pyrolysis gas Carry out purified treatment is put in makeup, to obtain purified gas.
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