CN110183076A - The dehydration of electro-osmosis sludge high-drying and granulation pyrolytic gasification process and equipment - Google Patents
The dehydration of electro-osmosis sludge high-drying and granulation pyrolytic gasification process and equipment Download PDFInfo
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- CN110183076A CN110183076A CN201910612836.XA CN201910612836A CN110183076A CN 110183076 A CN110183076 A CN 110183076A CN 201910612836 A CN201910612836 A CN 201910612836A CN 110183076 A CN110183076 A CN 110183076A
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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
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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
- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
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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
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
- C10B57/06—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition containing additives
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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
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/08—Non-mechanical pretreatment of the charge, e.g. desulfurization
- C10B57/10—Drying
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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
- 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
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/002—Removal of contaminants
- C10K1/003—Removal of contaminants of acid contaminants, e.g. acid gas removal
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/002—Removal of contaminants
- C10K1/003—Removal of contaminants of acid contaminants, e.g. acid gas removal
- C10K1/004—Sulfur containing contaminants, e.g. hydrogen sulfide
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
- C10K1/12—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids alkaline-reacting including the revival of the used wash liquors
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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
Abstract
The present invention relates to technical field of sludge treatment more particularly to the dehydration of electro-osmosis sludge high-drying and it is granulated pyrolytic gasification process, electro-osmosis sludge high-drying dewatering system includes following treatment process: the first step, and sludge is carried out electroosmotic dewatering processing；Sludge cake is crushed by second step, and it is modified to add biomass garbage；It includes following treatment process that sludge, which dries granulating system: the first step dries modified sewage sludge, makes modified sewage sludge moisture content lower than 15%；Fuel rod is made in modified sewage sludge after drying by second step；Sludge high temperature pyrolysis gasification system includes following treatment process: the first step, and fuel rod carries out pyrolytic gasification, generates the low molecule organic matter of large area, generates fuel gas；Fuel gas is stored after washing and alkali cleaning, provides heat source gas for equipment by second step.Process and equipment provided by the invention handle sludge, and process flow is simple, and low energy consumption, without adding chemicals, and can will treated that product rationally utilizes.
Description
Technical field
The present invention relates to technical field of sludge treatment more particularly to the dehydration of electro-osmosis sludge high-drying and it is granulated pyrolytic gasification
Process and equipment.
Background technique
Sludge refers to the primary deposition sludge, residual active sludge, humus sludge, digestion generated in sewage disposal process
Sludge and chemical sludge etc., containing nutrient for plants nitrogen, phosphorus, potassium and organic matter and moisture etc. in sludge, also containing largely has
Malicious harmful substance, such as parasitic ovum, pathogenic microorganism, bacterium, synthesis of organic substance and heavy metal ion；In addition, sludge is easy to rotten
Change smelly, particle is thinner, and relative density is smaller, and moisture content is high and is not easy to be dehydrated, and belongs to the hydroaropic substance of colloid form structure, by it
Secondary pollution can be caused by being piled up arbitrarily.After sewage treatment plant is dehydration to the main method of Treatment of Sludge at present, carry out at burning
Reason, residue can be used as afforestation matrix, and this processing function technique needs to add part chemistry system during the dehydration process
Agent, it is not only at high cost, it is not environmentally friendly enough, and the cracking of sludge is not thorough enough, and sludge generate during the burning process it is a large amount of
Fuel gas after treatment by smoke stack emission, not only pollutes environment, and cannot efficiently use fuel gas, does not meet
Treating sludge minimizing, recycling, innoxious ultimate aim.
Summary of the invention
It is simple that technical problem to be solved by the invention is to provide process flows, and low energy consumption, without adding chemicals, and
It can electro-osmosis sludge high-drying that product rationally utilizes be dehydrated and be granulated pyrolytic gasification process and equipment by treated.
The present invention is to be achieved by the following technical programs:
The dehydration of electro-osmosis sludge high-drying and granulation pyrolytic gasification process comprising following steps:
The dehydration of electro-osmosis sludge high-drying and granulation pyrolytic gasification process, which is characterized in that including electro-osmosis sludge
High level cadre's dewatering system, sludge drying granulating system and sludge high temperature pyrolysis gasification system,
Wherein electro-osmosis sludge high-drying dewatering system includes following treatment process:
Sludge in sludge storage pool is delivered to desiccation apparatus and is carried out dehydrating by the first step, make the moisture content of sludge by
80% -83% is down to 45% -50%；
Sludge cake after desiccation is crushed by second step, and it is modified to add biomass garbage；
It includes following treatment process that sludge, which dries granulating system:
The first step, will be handled through electro-osmosis sludge high-drying dewatering system and broken modified sewage sludge carries out drying and processing,
Make modified sewage sludge moisture content lower than 15%；
Fuel rod is made in modified sewage sludge after drying by second step；
Sludge high temperature pyrolysis gasification system includes following treatment process:
The first step, sludge dry fuel rod made from granulating system and carry out pyrolytic gasification, and the low molecule for generating large area has
Machine object generates fuel gas；
Fuel gas is stored after washing and alkali cleaning, provides heat source gas for equipment by second step, and the residue after cracking passes through
After broken, outward transport is used as afforestation base material improvement soil.
Further, the fuel gas that sludge high temperature pyrolysis gasification system second step generates is divided into two parts, and a part is dirt
Under the baking of scorching hot combustion gas dry distillation reactor occurs for mud combustible, and generating alkanes (CmHn), carbon monoxide (CO), tar etc. can
Combustion gas body and vapor (H2O), chlorine (Cl) Element generation hydrogen chloride (HCl) gas, sulphur (S) Element generation hydrogen sulfide (H2S) gas
Body, fuel gas store after washing and alkali cleaning, provide heat source gas for equipment, another part is that coke and a small number of clays etc. can not
Combustion things, by the effect of vapor, occur redox reaction and generate carbon monoxide (CO), hydrogen under 800-1000 DEG C of high temperature
(H2) etc. fuel gas, store after washing and alkali cleaning, provide heat source gas for equipment.
Optimization, the fuel gas stored after processing is connected with the heat source system of drying equipment to be provided for drying equipment
Heat source gas.
Optimization, the flue gas generated in sludge drying granulating system first step drying course is by washing, alkali cleaning and dedusting
After processing, flue gas is sucked by chimney discharge by air-introduced machine.
The dehydration of electro-osmosis sludge high-drying and granulation pyrolytic gasification process equipment comprising electro-osmosis sludge high-drying dehydration system
System, sludge drying granulating system and sludge high temperature pyrolysis gasification system, the electro-osmosis sludge high-drying dewatering system includes sludge
Temporary storing bin, electro-osmosis sludge high-drying dehydration device and sludge crushing conveying device, the outlet of sludge temporary storing bin and electro-osmosis are dirty
The mud inlet of mud high level cadre's dehydration device is connected, the cake output and sludge crushing conveying device of electro-osmosis sludge high-drying dehydration device
The cake mouth that enters be connected, sludge drying granulating system includes rotary kiln, pelletizer and mud cake temporary storing bin, sludge crushing conveying
The cake output of device is connected with the cake mouth that enters of rotary kiln, and the cake output of rotary kiln is connected with the cake mouth that enters of pelletizer, is granulated
The cake output of machine is connected with the cake mouth that enters of mud cake temporary storing bin, the sludge high temperature pyrolysis gasification system include pyrolysis gasification furnace,
Water washing device, alkaline cleaner, dust-extraction unit and flammable gas storage tank, the pyrolytic gasification furnace bottom are equipped with slag-drip opening, pyrolytic gasification
The cake mouth that enters of furnace is connected with the cake output of mud cake temporary storing bin, and the exhaust outlet of pyrolysis gasification furnace is connected with the air intake of water washing device
Logical, the exhaust outlet of water washing device is connected with the air intake of alkaline cleaner, and the exhaust outlet of alkaline cleaner and dust-extraction unit enter gas
Mouth is connected, and the exhaust outlet of dust-extraction unit is connected with the air intake of flammable gas storage tank.
Further, pyrolysis gasification furnace is equipped with middle part exhaust outlet and upper air vent, the middle part exhaust outlet and top exhaust
Mouth passes sequentially through water washing device, alkaline cleaner, dust-extraction unit respectively and is connected with the air intake of combustion gas storage tank.
Optimization, the exhaust outlet of combustion gas storage tank is connected with rotary kiln heating plant, provides hot gas source for rotary kiln.
Optimization, the smoke outlet of rotary kiln successively with its water washing device, alkaline cleaner, dust-extraction unit, air-introduced machine and chimney
It is connected.
Optimization, electro-osmosis sludge high-drying dehydration device is plate and frame filter press, and sludge crushing conveying device is spiral crushing
Conveyer, helical blade pass through lower section below plate and frame filter press.
Optimization, entering for pyrolysis gasification furnace is connected between cake mouth and the cake output of mud cake temporary storing bin by lifting device,
High pressure blower is installed between its water washing device and alkaline cleaner.
Beneficial effects of the present invention
Electro-osmosis sludge high-drying dehydration provided by the invention and granulation pyrolytic gasification process, reliable for operation, energy consumption
Low, long service life handles 1 ton of 80% water content sludge, and energy consumption is down to 90kwh.Mud granulizing processing, and realize that sludge provides
Sourceization utilizes.
It will be handled through electro-osmosis sludge high-drying dewatering system and broken modified sewage sludge carries out drying and processing, and make modified dirt
Mud moisture content is lower than 15%；Material process is made by what the modified sewage sludge after drying was made that material is directly squeezed into finished product by fuel rod,
It can regard that siccative adds steam to carry out the granulation process without chemical reaction as, moisture percentage in sewage sludge can be fast implemented and be reduced to 30%
Hereinafter, the problem of reducing energy consumption, simplifying process flow, and pollute environment there is no emission, particularly suitable for temperature-sensitive object
The granulation of material.
Sludge dries fuel rod made from granulating system and carries out pyrolytic gasification, generates the low molecule organic matter of large area, produces
Raw fuel gas, and fuel gas is stored after washing and alkali cleaning, heat source gas is provided for equipment, the residue after cracking is by broken
After broken, outward transport is used as afforestation base material improvement soil, makes system substantially and realize sludge reduction, recycling and innoxious
Processing target.
Detailed description of the invention
Fig. 1 is present invention process flow diagram；
Fig. 2 is present device connection schematic diagram；
In figure, 100. electro-osmosis sludge high-drying dewatering systems, 110. sludge temporary storing bins, the dehydration of 120. electro-osmosis sludge high-dryings
Device, 130. sludge crushing conveying devices, 140. helical blades, 200. sludge drying granulating system, 210, mud cake temporary storing bin,
220. pelletizers, 230. rotary kilns, 240. sludge dry granulating system water washing device, and 250. sludge dry granulating system alkali cleaning dress
It sets, 260. sludge dry granulating system dust-extraction unit, and 270. air-introduced machines, 300. sludge high temperature pyrolysis gasification systems, 310. are promoted
Device, 320. pyrolysis gasification furnaces, 330. sludge high temperature pyrolysis gasification system water washing devices, 340. high pressure blowers, 350. sludge are high
Warm pyrolysis gasification system alkaline cleaner, 360. sludge high temperature pyrolysis gasification system dust-extraction units, 370. flammable gas storage tanks
Specific embodiment
The dehydration of electro-osmosis sludge high-drying and granulation pyrolytic gasification process comprising following steps:
The dehydration of electro-osmosis sludge high-drying and granulation pyrolytic gasification process, which is characterized in that including electro-osmosis sludge
High level cadre's dewatering system, sludge drying granulating system and sludge high temperature pyrolysis gasification system,
Wherein electro-osmosis sludge high-drying dewatering system includes following treatment process:
Sludge in sludge storage pool is delivered to desiccation apparatus and is carried out dehydrating by the first step, make the moisture content of sludge by
80% -83% is down to 45% -50%；The step is mainly the sludge for being 80% -83% by the moisture content in sludge temporary storing bin
It is pumped into electro-osmosis high pressure desiccation apparatus, electro-osmosis coupling pumping pressure and squeeze pressure is improved, makes sludge by moisture content
80% -83% is reduced to moisture content 45% -50%；,
Sludge cake after desiccation is crushed by sludge second step, and it is modified to add biomass garbage；In treatment process, without adding
Enter chemical substance, it is at low cost and not will cause secondary pollution.
It includes following treatment process that sludge, which dries granulating system:
The first step, will be handled through electro-osmosis sludge high-drying dewatering system and broken modified sewage sludge carries out drying and processing,
It can be carried out in rotary kiln, make modified sewage sludge moisture content lower than 15%；And it can be killed by drying technology harmful in sludge
Strain and pathogen；
Fuel rod is made in modified sewage sludge after drying by second step；
Sludge high temperature pyrolysis gasification system includes following treatment process:
The first step, sludge dry fuel rod made from granulating system and carry out pyrolytic gasification, and the low molecule for generating large area has
Machine object generates fuel gas, this process fuel rod in the state of anoxycausis is pyrolyzed, organic molecule structure therein
Cracking comprehensively occurs, generates a large amount of fuel gas；
Fuel gas is stored after washing and alkali cleaning, provides heat source gas for equipment by second step, and the residue after cracking passes through
After broken, outward transport is used as afforestation base material improvement soil, and processing product is made full use of, realizes Treatment of Sludge recycling.
Further, the fuel gas that sludge high temperature pyrolysis gasification system second step generates is divided into two parts, and a part is dirt
Under the baking of scorching hot combustion gas dry distillation reactor occurs for mud combustible, and generating alkanes (CmHn), carbon monoxide (CO), tar etc. can
Combustion gas body and vapor (H2O), chlorine (Cl) Element generation hydrogen chloride (HCl) gas, sulphur (S) Element generation hydrogen sulfide (H2S) gas
Body, fuel gas store after washing and alkali cleaning, provide heat source gas for equipment, another part is that coke and a small number of clays etc. can not
Combustion things, by the effect of vapor, occur redox reaction and generate carbon monoxide (CO), hydrogen under 800-1000 DEG C of high temperature
(H2) etc. fuel gas, store after washing and alkali cleaning, provide heat source gas for equipment, make to generate in sludge handling process flammable
Gas can be fully used.
Optimization, the fuel gas stored after processing is connected with the heat source system of drying equipment to be provided for drying equipment
Heat source gas, the fuel gas reuse that will be generated in sludge handling process can save the energy consumption of processing system, reduction processing
Cost.
Optimization, the flue gas generated in sludge drying granulating system first step drying course is by washing, alkali cleaning and dedusting
After processing, flue gas is sucked by chimney discharge by air-introduced machine, unavailable exhaust gas discharges after processing is qualified, meets environmental protection and want
It asks.
The dehydration of electro-osmosis sludge high-drying and granulation pyrolytic gasification process equipment comprising electro-osmosis sludge high-drying dehydration system
System 100, sludge drying granulating system 200 and sludge high temperature pyrolysis gasification system 300, the electro-osmosis sludge high-drying dewatering system
Including sludge temporary storing bin 110, electro-osmosis sludge high-drying dehydration device 120 and sludge crushing conveying device 130, sludge temporary storing bin
Outlet is connected with the mud inlet of electro-osmosis sludge high-drying dehydration device, the cake output of electro-osmosis sludge high-drying dehydration device with
The cake mouth that enters of sludge crushing conveying device 130 is connected, and the sludge drying granulating system includes rotary kiln 230, pelletizer 220
And mud cake temporary storing bin 210, the cake output of sludge crushing conveying device are connected with the cake mouth that enters of rotary kiln, the cake output of rotary kiln
It is connected with the cake mouth that enters of pelletizer, the cake output of pelletizer is connected with the cake mouth that enters of mud cake temporary storing bin, the sludge high temperature
Pyrolysis gasification system includes pyrolysis gasification furnace 320, sludge high temperature pyrolysis gasification system water washing device 330, sludge high temperature pyrolysis gas
Change system alkaline cleaner 350, sludge high temperature pyrolysis gasification system dust-extraction unit 360 and flammable gas storage tank 370, the pyrolytic gasification
Furnace bottom is equipped with slag-drip opening, and the cake mouth that enters of pyrolysis gasification furnace is connected with the cake output of mud cake temporary storing bin, the row of pyrolysis gasification furnace
Port is connected with the air intake of sludge high temperature pyrolysis gasification system water washing device, sludge high temperature pyrolysis gasification system water washing device
Exhaust outlet be connected with the air intake of sludge high temperature pyrolysis gasification system alkaline cleaner, sludge high temperature pyrolysis gasification system alkali cleaning
The exhaust outlet of device is connected with the air intake of sludge high temperature pyrolysis gasification system dust-extraction unit, sludge high temperature pyrolysis gasification system
The exhaust outlet of dust-extraction unit is connected with the air intake of flammable gas storage tank.
Further, pyrolysis gasification furnace is equipped with middle part exhaust outlet and upper air vent, the middle part exhaust outlet and top exhaust
Mouth passes sequentially through sludge high temperature pyrolysis gasification system water washing device, sludge high temperature pyrolysis gasification system alkaline cleaner, sludge respectively
High temperature pyrolysis and gasification system dust removing device is connected with the air intake of combustion gas storage tank, can all handle the fuel gas of generation simultaneously
It recycles.
Optimization, the exhaust outlet of combustion gas storage tank is connected with rotary kiln heating plant, provides hot gas source for rotary kiln.
Optimization, the smoke outlet of rotary kiln is successively granulated system with sludge drying granulating system water washing device 240, sludge drying
System alkaline cleaner 250, sludge drying granulating system dust-extraction unit 260, air-introduced machine 270 and chimney (not shown) are connected.
Optimization, electro-osmosis sludge high-drying dehydration device is plate and frame filter press, and sludge crushing conveying device is spiral crushing
Conveyer, helical blade 140 are passed through below plate and frame filter press, are not only saved floor occupying area, but also through plate and frame filter press pressure
Mud cake after filter is not necessarily to and outer transmission device, on the spiral crushing conveyer for falling directly on lower section, is crushed and conveying is complete simultaneously
At improving production efficiency.
Optimization, entering for pyrolysis gasification furnace is connected between cake mouth and the cake output of mud cake temporary storing bin by lifting device 310
It is logical, further facilitate the transmission of mud cake, sludge high temperature pyrolysis gasification system water washing device and sludge high temperature pyrolysis gasification system alkali
High pressure blower 340 is installed between cleaning device, accelerates the processing of fuel gas.
Since electro-osmosis sludge high-drying provided by the invention is dehydrated and is granulated pyrolytic gasification process comprising electric osmose
Saturating sludge high-drying dewatering system, sludge dry granulating system and sludge high temperature pyrolysis gasification system, wherein electro-osmosis sludge high-drying
Dewatering system and sludge drying granulating system can regard that siccative adds steam to carry out the granulation process without chemical reaction as, can be fast
Speed realizes that moisture percentage in sewage sludge is reduced to 30% hereinafter, reduce energy consumption, simplifies process flow, and there is no emissions to pollute ring
The problem of border, the granulation particularly suitable for heat sensitive material.
Sludge dries fuel rod made from granulating system and carries out pyrolytic gasification, generates the low molecule organic matter of large area, produces
Raw fuel gas, and fuel gas is stored after washing and alkali cleaning, heat source gas is provided for equipment, the residue after cracking is by broken
After broken, outward transport is used as afforestation base material improvement soil, makes system substantially and realize sludge reduction, recycling and innoxious
Processing target.
In conclusion using electro-osmosis sludge high-drying provided by the invention be dehydrated and be granulated pyrolytic gasification process and
Equipment handles sludge, and process flow is simple, and low energy consumption, without adding chemicals, and can will treated that product closes
Reason utilizes.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. the dehydration of electro-osmosis sludge high-drying and granulation pyrolytic gasification process, which is characterized in that high including electro-osmosis sludge
Dry dewatering system, sludge drying granulating system and sludge high temperature pyrolysis gasification system,
Wherein electro-osmosis sludge high-drying dewatering system includes following treatment process:
Sludge in sludge storage pool is delivered to desiccation apparatus and is carried out dehydrating by the first step, make the moisture content of sludge by
80% -83% is down to 45% -50%；
Sludge cake after desiccation is crushed by second step, and it is modified to add biomass garbage；
It includes following treatment process that sludge, which dries granulating system:
The first step, will be handled through electro-osmosis sludge high-drying dewatering system and broken modified sewage sludge carries out drying and processing, make to change
Property moisture percentage in sewage sludge be lower than 15%；
Fuel rod is made in modified sewage sludge after drying by second step；
Sludge high temperature pyrolysis gasification system includes following treatment process:
The first step, sludge dry fuel rod made from granulating system and carry out pyrolytic gasification, generate the low molecule organic matter of large area,
Generate fuel gas；
Fuel gas is stored after washing and alkali cleaning, provides heat source gas for equipment by second step, and the residue after cracking is by broken
Afterwards, outward transport is used as afforestation base material improvement soil.
2. electro-osmosis sludge high-drying dehydration according to claim 1 and granulation pyrolytic gasification process, feature exist
In the fuel gas that sludge high temperature pyrolysis gasification system second step generates is divided into two parts, and a part is that sludge combustible is burning
Under the baking of hot combustion gas, dry distillation reactor occurs, generates fuel gas and the vapor such as alkanes, carbon monoxide, tar, chlorine element is raw
At hydrogen chloride gas, element sulphur generates hydrogen sulfide gas, and fuel gas stores after washing and alkali cleaning, provides heat source for equipment
Gas, another part are the noncombustibles such as coke and a small number of clays under 800-1000 DEG C of high temperature, by the effect of vapor, are occurred
Redox reaction generates the fuel gas such as carbon monoxide, hydrogen, stores after washing and alkali cleaning, provides heat source gas for equipment.
3. electro-osmosis sludge high-drying dehydration according to claim 2 and granulation pyrolytic gasification process, feature exist
In the fuel gas stored after processing is connected with the heat source system of drying equipment provides heat source gas for drying equipment.
4. electro-osmosis sludge high-drying dehydration according to claim 1 and granulation pyrolytic gasification process, feature exist
In the flue gas generated in sludge drying granulating system first step drying course is after washing, alkali cleaning and dust removal process, by drawing
Flue gas sucking chimney is discharged blower.
5. the dehydration of electro-osmosis sludge high-drying and granulation pyrolytic gasification process equipment, which is characterized in that high including electro-osmosis sludge
Dry dewatering system, sludge drying granulating system and sludge high temperature pyrolysis gasification system, the electro-osmosis sludge high-drying dewatering system
Including sludge temporary storing bin, electro-osmosis sludge high-drying dehydration device and sludge crushing conveying device, the outlet of sludge temporary storing bin with
The mud inlet of electro-osmosis sludge high-drying dehydration device is connected, the cake output and sludge crushing of electro-osmosis sludge high-drying dehydration device
The cake mouth that enters of conveying device is connected, and the sludge drying granulating system includes rotary kiln, pelletizer and mud cake temporary storing bin, sludge
The cake output of broken conveying device is connected with the cake mouth that enters of rotary kiln, and the cake output of rotary kiln is connected with the cake mouth that enters of pelletizer
Logical, the cake output of pelletizer is connected with the cake mouth that enters of mud cake temporary storing bin, and the sludge high temperature pyrolysis gasification system includes pyrolysis
Gasification furnace, water washing device, alkaline cleaner, dust-extraction unit and flammable gas storage tank, the pyrolytic gasification furnace bottom are equipped with slag-drip opening, heat
The cake mouth that enters of solution gasification furnace is connected with the cake output of mud cake temporary storing bin, and the exhaust outlet of pyrolysis gasification furnace and water washing device enter gas
Mouth is connected, and the exhaust outlet of water washing device is connected with the air intake of alkaline cleaner, the exhaust outlet and dust-extraction unit of alkaline cleaner
Air intake be connected, the exhaust outlet of dust-extraction unit is connected with the air intake of flammable gas storage tank.
6. electro-osmosis sludge high-drying dehydration according to claim 5 and granulation pyrolytic gasification process equipment, feature exist
Be equipped with middle part exhaust outlet and upper air vent in, the pyrolysis gasification furnace, the middle part exhaust outlet and upper air vent respectively according to
It is secondary to be connected by its water washing device, alkaline cleaner, dust-extraction unit with the air intake of combustion gas storage tank.
7. it is dehydrated and is granulated pyrolytic gasification process equipment according to any electro-osmosis sludge high-drying of claim 5 or 6,
It is characterized in that, the exhaust outlet of combustion gas storage tank is connected with rotary kiln heating plant, provides hot gas source for rotary kiln.
8. electro-osmosis sludge high-drying dehydration according to claim 5 and granulation pyrolytic gasification process equipment, feature exist
In the smoke outlet of rotary kiln is successively connected with its water washing device, alkaline cleaner, dust-extraction unit, air-introduced machine and chimney.
9. electro-osmosis sludge high-drying dehydration according to claim 5 and granulation pyrolytic gasification process equipment, feature exist
In, the electro-osmosis sludge high-drying dehydration device is plate and frame filter press, and sludge crushing conveying device is spiral crushing conveyer,
Helical blade passes through lower section below plate and frame filter press.
10. electro-osmosis sludge high-drying dehydration according to claim 5 and granulation pyrolytic gasification process equipment, feature exist
In, entering for pyrolysis gasification furnace is connected between cake mouth and the cake output of mud cake temporary storing bin by lifting device, and water washing device and
High pressure blower is installed between alkaline cleaner.
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