CN108640471A - A kind of comprehensive utilization of mud device and method - Google Patents
A kind of comprehensive utilization of mud device and method Download PDFInfo
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- CN108640471A CN108640471A CN201810579630.7A CN201810579630A CN108640471A CN 108640471 A CN108640471 A CN 108640471A CN 201810579630 A CN201810579630 A CN 201810579630A CN 108640471 A CN108640471 A CN 108640471A
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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
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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
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
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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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- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Treatment Of Sludge (AREA)
Abstract
The present invention provides a kind of comprehensive utilization of mud devices.The present invention carries out Treatment of Sludge using the comprehensive utilization of mud device, and the non-pollution discharge in sludge treatment overall process avoids secondary pollution problem existing for existing Sludge Disposal Techniques, is a kind of recycling sludge disposition new technology of green clean environment firendly；Pyrolysis gas is produced by raw material of renewable resource sludge, provides gaseous fuel for industrial production, the fossil fuels such as alternative existing non-renewable coal, oil also reduce enterprise's production cost while reducing resource consumption；Realize sludge safe, it is innoxious, clean, disposal of resources.
Description
Technical field
The present invention relates to Solid Waste Treatment technical field more particularly to a kind of comprehensive utilization of mud device and methods.
Background technology
Currently, China generates 3000~40,000,000 tons of municipal sludge (moisture content 80%) every year.How economic, safety,
Harmless, disposal of resources sludge is one of great environmental problem in the urgent need to address in recent years.Municipal sludge complicated component,
It is such as improper also containing heavy metal, bacterium, virus etc. to human body poisonous and harmful substance while containing large amount of organic, inorganic matter
It conducts oneself well and sets, ecological environment will be polluted and seriously threaten human health by arbitrarily abandoning or filling.
Currently, common sludge disposal method mainly has landfill, compost, land use, burning etc. both at home and abroad, from actually answering
For seeing, all there is advantage and defect in various technologies.Wherein, landfill method is with the domestic increasingly reduction that can use landfill place,
It is unsustainable；Composting production market acceptance is low；Land use is typically only used for forest land etc., and dosage and range have larger limitation；
Although burning method has minimizing, innoxious degree high, processing speed is fast, and floor space is small to wait remarkable advantages, it invests fortune
The problems such as row is of high cost, and there are smoke secondary pollutions, restricts its popularization and application to a certain extent.
For Sludge Disposal Techniques, researchers have carried out extensive research.Chinese invention patent 201710449260.0 is public
A kind of recycling sludge system has been opened, has made fertilizer using sludge, but there are the pollution problems such as waste water, foul smell in the production process,
The problems such as there is also heavy-metal contaminated soil, crops during sludge manure use simultaneously.Chinese invention patent
201711166042.2 disclosing a kind of recycling sludge utilizes devices and methods therefor, sludge production pyrolysis gas is utilized to realize industry
There are foul smell, flue gas SO for boiler, kiln gas denitration, but technical process2, the secondary pollutions problem such as heavy metal.Chinese invention is special
Profit 201510753048.4 discloses a kind of recycling handles method for dirty mire, and this method passes through hydro-thermal process, separation of solid and liquid, compound
Sorbing material adsorb and anaerobic fermentation and etc. recycling, but complex process, high energy consumption are realized to Treatment of Sludge.
Above-mentioned to grind as it can be seen that although being directed to sewage sludge harmlessness, recycling at present has carried out relatively broad research
Study carefully there are still more problem, cannot achieve the complete innoxious, recycling of sludge truly.
Invention content
The purpose of the present invention is to provide a kind of sludge safe Environmental-protection comprehensives to utilize method, and safety is being carried out to sludge
While change, harmlessness disposing, recycling, the recovery energy of sludge are realized.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical scheme：
The present invention provides a kind of comprehensive utilization of mud devices, including wet mud Storing and conveying unit, drying sludge to be dehydrated
Unit, dewatered sludge Storing and conveying unit, pyrolyzing sludge gasification unit, sludge Carbon stock unit, Equipment for Heating Processing and exhaust-gas treatment
Unit；The wet mud Storing and conveying unit, drying sludge dewatering unit, dewatered sludge Storing and conveying unit, pyrolyzing sludge gasification
Unit is sequentially connected to sludge Carbon stock unit, and the fuel source of the Equipment for Heating Processing is described in pyrolyzing sludge gasification unit
The flue gas that Equipment for Heating Processing generates is delivered to pyrolyzing sludge gasification unit, drying sludge dewatering unit and exhaust gas treatment unit.
Preferably, the wet mud Storing and conveying unit is sealing unit, includes the wet mud belt conveyor system of connection
With wet mud storage tank；The wet mud belt conveyor system is connected to the drying sludge dewatering unit.
Preferably, the drying sludge dewatering unit includes drying machine, cyclone dust collectors and bag filter；The drying
Machine, cyclone dust collectors and bag filter are sequentially communicated；The drying machine is connected to wet mud Storing and conveying unit；The drying
The dewatered sludge outlet of machine, the cinder-discharging port of the cinder-discharging port of cyclone dust collectors, bag filter and the dewatered sludge Storing and conveying unit
Connection.
Preferably, the dewatered sludge Storing and conveying unit is sealing unit, includes the dewatered sludge storage tank and dewatered sludge of connection
Transport system；The dewatered sludge storage tank is connected to the drying sludge dewatering unit, the dewatered sludge transport system and the dirt
Mud pyrolytic gasification unit is connected to.
Preferably, the pyrolyzing sludge gasification unit includes pyrolyzing sludge gasification stove, bag filter and pyrolysis gas storage tank；
The pyrolyzing sludge gasification stove is connected to the dewatered sludge Storing and conveying unit, the sludge generated in the pyrolyzing sludge gasification stove
Pyrolysis gas is delivered to after bag filter dedusting in the pyrolysis gas storage tank, and the sludge pyrolysis gas in the pyrolysis gas storage tank is made
It is delivered in Equipment for Heating Processing and pyrolyzing sludge gasification stove for fuel.
The present invention provides the methods that comprehensive utilization of mud device described in above-mentioned technical proposal carries out Treatment of Sludge, including with
Lower step：
(1) pending mud is dried through wet mud Storing and conveying unit transportation to drying sludge dewatering unit de-
Water obtains dewatered sludge；
(2) dewatered sludge is subjected to pyrolysis gas through dewatered sludge Storing and conveying unit transportation to pyrolyzing sludge gasification unit
Change, obtains sludge pyrolysis gas and sludge carbon；
(3) the sludge carbon is delivered to sludge Carbon stock unit；Using partial sludge pyrolysis gas as fuel reuse to dirt
Mud pyrolytic gasification unit is delivered to Equipment for Heating Processing using excess sludge pyrolysis gas as fuel, is fired in the Equipment for Heating Processing
It burns and generates flue gas；
(4) partial fume is delivered to drying sludge dewatering unit and pyrolyzing sludge gasification unit, remaining flue gas is conveyed
Qualified discharge after being handled to exhaust gas treatment unit.
Preferably, the moisture content of dewatered sludge is 5-35% in the step (1).
Preferably, the temperature of pyrolytic gasification is 350-600 DEG C in the step (2).
Preferably, the temperature that the flue gas of drying sludge dewatering unit is delivered in the step (4) is 200-300 DEG C.
Preferably, it is 2-10% that oxygen content in the flue gas of pyrolyzing sludge gasification unit is delivered in the step (4).
The present invention provides a kind of comprehensive utilization of mud devices, including wet mud Storing and conveying unit, drying sludge to be dehydrated
Unit, dewatered sludge Storing and conveying unit, pyrolyzing sludge gasification unit, sludge Carbon stock unit, Equipment for Heating Processing and exhaust-gas treatment
Unit；The wet mud Storing and conveying unit, drying sludge dewatering unit, dewatered sludge Storing and conveying unit, pyrolyzing sludge gasification
Unit is sequentially connected to sludge Carbon stock unit, and the fuel source of the Equipment for Heating Processing is described in pyrolyzing sludge gasification unit
The flue gas that Equipment for Heating Processing generates is delivered to pyrolyzing sludge gasification unit, drying sludge dewatering unit and exhaust gas treatment unit.
The present invention carries out Treatment of Sludge, the pollution-free row in sludge treatment overall process using the comprehensive utilization of mud device
It puts, avoids secondary pollution problem existing for existing Sludge Disposal Techniques, be at a kind of recycling sludge of green clean environment firendly
Set new technology；
The present invention is using renewable resource -- and sludge produces pyrolysis gas as raw material, provides gaseous fuel for industrial production, can replace
It also reduces enterprise while reducing resource consumption for fossil fuels such as existing non-renewable coal, oil and is produced into
This；
The present invention also produces solid absorbent while producing pyrolysis gas using sludge --- and sludge carbon can be used for giving up
Gas, waste water and remediation contaminated soil realize that the treatment of wastes with processes of wastes against one another and recycling sludge utilize；
The present invention comprehensive utilization of mud device and method realize sludge safe, it is innoxious, clean, at recycling
It sets.
Description of the drawings
Fig. 1 is the comprehensive utilization of mud device and process flow chart of the present invention.
In Fig. 1：1- wet mud storage tanks, 2- wet mud belt conveyor systems, 3- sludge driers, 4- cyclone dust collectors, 5-
Bag filter, 6- dewatered sludge storage tanks, 7- dewatered sludge transport systems, 8- anti-explosion early warning devices, 9- pyrolyzing sludges gasification stove, 10-
Bag filter, 11- are pyrolyzed gas storage tank, 12- sludge carbon storage tanks, 13- sludge carbon transport systems, 14- Equipments for Heating Processing, more than 15-
Heat utilization equipment, 16- exhaust gas treatment units.
Specific implementation mode
The present invention provides a kind of comprehensive utilization of mud devices, including wet mud Storing and conveying unit, drying sludge to be dehydrated
Unit, dewatered sludge Storing and conveying unit, pyrolyzing sludge gasification unit, sludge Carbon stock unit, Equipment for Heating Processing and exhaust-gas treatment
Unit；The wet mud Storing and conveying unit, drying sludge dewatering unit, dewatered sludge Storing and conveying unit, pyrolyzing sludge gasification
Unit is sequentially connected to sludge Carbon stock unit, and the fuel source of the Equipment for Heating Processing is described in pyrolyzing sludge gasification unit
The flue gas that Equipment for Heating Processing generates is delivered to pyrolyzing sludge gasification unit, drying sludge dewatering unit and exhaust gas treatment unit.Institute
The specific connection relation of comprehensive utilization of mud device device is stated as shown in Figure 1, in Fig. 1：1- wet mud storage tanks, 2- wet mud belts
Transport system, 3- sludge driers, 4- cyclone dust collectors, 5- bag filters, 6- dewatered sludge storage tanks, 7- dewatered sludge delivery systems
System, 8- anti-explosion early warning devices, 9- pyrolyzing sludges gasification stove, 10- bag filters, 11- pyrolysis gas storage tanks, 12- sludge carbon storage tanks,
13- sludge carbon transport systems, 14- Equipments for Heating Processing, 15- waste heat utilization equipments, 16- exhaust gas treatment units.
In an embodiment of the present invention, the wet mud Storing and conveying unit is sealing unit, includes the wet mud of connection
Belt conveyor system and wet mud storage tank；The wet mud belt conveyor system is connected to the drying sludge dewatering unit.
In the embodiment of the present invention, specifically pending mud is stored in wet mud storage tank, it is defeated by wet mud belt conveyor system
It send into drying sludge dewatering unit.The present invention sets wet mud Storing and conveying unit to sealing unit, can play it is closed,
Deodorization dust suppression, prevents mosquito from growing, improves the effect of working environment.
In an embodiment of the present invention, the drying sludge dewatering unit includes that drying machine, cyclone dust collectors and cloth bag remove
Dirt device；The drying machine is connected to wet mud Storing and conveying unit；The dewatered sludge outlet of the drying machine, cyclone dust collectors unload
Grey mouth, bag filter cinder-discharging port be connected to the dewatered sludge Storing and conveying unit.In the present invention, the drying machine is preferred
For horizontal drum drying machine or vertical suspending pneumatic drier.In an embodiment of the present invention, specifically that wet mud belt is defeated
The system pending mud that conveying comes is sent to be dried and dehydrated in drying machine, in the exhaust gas after obtained dewatered sludge and drying
The dewatered sludge of carrying is delivered to dewatered sludge through dewatered sludge transport system after gathering dust via cyclone dust collectors and bag filter and stores
Supply unit；Exhaust gas after drying enter after cyclone dust collectors and bag filter dedusting Equipment for Heating Processing incineration disposal or into
Enter exhaust gas treatment unit processing qualified discharge.
In an embodiment of the present invention, the dewatered sludge Storing and conveying unit is sealing unit, includes the dewatered sludge of connection
Storage tank and dewatered sludge transport system；The dewatered sludge storage tank is connected to the drying sludge dewatering unit, the dewatered sludge conveying
System is connected to pyrolyzing sludge gasification unit.The present invention sets dewatered sludge Storing and conveying unit to sealing unit, can be with
Play the role of closed, deodorization, dust suppression, improve working environment.In an embodiment of the present invention, the dewatered sludge Storing and conveying list
Member further includes anti-explosion early warning device, and the anti-explosion early warning device is connect with dewatered sludge storage tank；The anti-explosion early warning device can supervise
Dust concentration is controlled, explosion-proof prompting is made.In an embodiment of the present invention, the dry dirt specifically generated drying sludge dewatering unit
Mud is stored in dewatered sludge storage tank, and pyrolyzing sludge gasification unit is delivered to by dewatered sludge transport system.
In an embodiment of the present invention, the pyrolyzing sludge gasification unit includes pyrolyzing sludge gasification stove, bag filter
With pyrolysis gas storage tank；The pyrolyzing sludge gasification stove is connected to the dewatered sludge Storing and conveying unit, the pyrolyzing sludge gasification
The sludge pyrolysis gas generated in stove is delivered to after bag filter dedusting in the pyrolysis gas storage tank, in the pyrolysis gas storage tank
Sludge pyrolysis gas as fuel be delivered to Equipment for Heating Processing and pyrolyzing sludge gasification stove in.
In an embodiment of the present invention, the sludge Carbon stock unit includes sludge carbon storage tank and sludge carbon transport system.
In an embodiment of the present invention, the sludge carbon storage tank and pyrolyzing sludge gasification stove be connected tos, the sludge carbon transport system with give up
Gas disposal unit is connected to.In an embodiment of the present invention, specifically the sludge Carbon stock that pyrolyzing sludge gasification unit generates is existed
In sludge carbon storage tank, exhaust gas treatment unit then is delivered to as waste-gas adsorbant or for other necks through sludge carbon transport system
Domain is such as used for exhaust gas, waste water and remediation contaminated soil.
In the present invention, the Equipment for Heating Processing preferably includes Industrial Boiler or Industrial Stoves.In the embodiment of the present invention
In, the Equipment for Heating Processing is connected to the drying machine in pyrolysis gas storage tank and drying sludge dewatering unit respectively.The present invention's
In embodiment, the Equipment for Heating Processing further includes waste heat utilization equipment；The waste heat utilization equipment and Industrial Boiler or industry kiln
Stove is connected to.In an embodiment of the present invention, the sludge pyrolysis gas being pyrolyzed in gas storage tank is specifically delivered to industry as fuel
The flue gas that boiler or Industrial Stoves, the Industrial Boiler or Industrial Stoves generate utilizes the part after waste heat through waste heat utilization equipment
Flue gas is delivered to the drying machine of pyrolyzing sludge gasification stove and drying sludge dewatering unit, and remaining flue gas is delivered to exhaust gas treatment unit
Qualified discharge after being handled.The dry waste gas containing foul smell, VOCs that drying machine generates simultaneously will enter Equipment for Heating Processing and burn
Disposition.
In the present invention, the exhaust gas treatment unit is preferably adsorption tanks；Adsorbent is preferred used in the adsorption tanks
For sludge carbon or activated carbon.In a specific embodiment of the present invention, not reuse after the adsorbent adsorption saturation, is directly entered heat
Processing equipment carries out incineration disposal.In an embodiment of the present invention, the exhaust gas treatment unit is dehydrated with drying sludge single respectively
Member, sludge Carbon stock unit are connected to waste heat utilization equipment.In an embodiment of the present invention, specifically by sludge Carbon stock unit
The sludge carbon of generation is used for exhaust gas treatment unit as adsorbent, and by the generation of the drying machine of drying sludge dewatering unit containing smelly
The flue gas of gas, the dry waste gas of VOCs and waste heat utilization equipment output is delivered to exhaust gas treatment unit and is handled；Into described
The sludge carbon of exhaust gas treatment unit becomes waste sludge carbon after being used as adsorbent, and the waste sludge carbon is delivered to Equipment for Heating Processing
It uses.
The present invention provides the methods that comprehensive utilization of mud device described in above-mentioned technical proposal carries out Treatment of Sludge, including with
Lower step：
(1) pending mud is dried through wet mud Storing and conveying unit transportation to drying sludge dewatering unit de-
Water obtains dewatered sludge；
(2) dewatered sludge is subjected to pyrolysis gas through dewatered sludge Storing and conveying unit transportation to pyrolyzing sludge gasification unit
Change, obtains sludge pyrolysis gas and sludge carbon；
(3) the sludge carbon is delivered to sludge Carbon stock unit；Using partial sludge pyrolysis gas as fuel reuse to dirt
Mud pyrolytic gasification unit is delivered to Equipment for Heating Processing using excess sludge pyrolysis gas as fuel, is fired in the Equipment for Heating Processing
It burns and generates flue gas；
(4) partial fume is delivered to drying sludge dewatering unit and pyrolyzing sludge gasification unit, remaining flue gas is conveyed
Qualified discharge after being handled to exhaust gas treatment unit.
Pending mud is dried the present invention through wet mud Storing and conveying unit transportation to drying sludge dewatering unit
Dehydration, obtains dewatered sludge.In the present invention, the pending mud is preferably municipal sludge.In specific embodiments of the present invention
In, the specially dewatered sludge of municipal sewage plant.In the present invention, the moisture content of the dewatered sludge is preferably 5-35%,
More preferably 10-25%.
After obtaining dewatered sludge, the present invention gasifies the dewatered sludge through dewatered sludge Storing and conveying unit transportation to pyrolyzing sludge
Unit carries out pyrolytic gasification, obtains sludge pyrolysis gas and sludge carbon.In the present invention, the temperature of the pyrolytic gasification is preferably
350-600 DEG C, more preferably 450-550 DEG C.In the present invention, the pyrolytic gasification is preferred first by natural gas as fuel, will
Fire box temperature is raised to 350-600 DEG C, and when sludge pyrolysis gas can continue for seasonable, stopping supply natural gas uses sludge pyrolysis gas instead
As pyrolyzing sludge gasification fuel.
After obtaining sludge pyrolysis gas and sludge carbon, the sludge carbon is delivered to sludge Carbon stock unit by the present invention；By portion
Sludge pyrolysis gas is divided, to pyrolyzing sludge gasification unit, hot place to be delivered to using excess sludge pyrolysis gas as fuel as fuel reuse
Equipment is managed, the burning generation flue gas in the Equipment for Heating Processing.
After burning generates flue gas in the Equipment for Heating Processing, partial fume is delivered to drying sludge dehydration list by the present invention
Member and pyrolyzing sludge gasification unit, are delivered to exhaust gas treatment unit by remaining flue gas and carry out emission treatment.In the present invention, described
The temperature for being delivered to the flue gas of drying sludge dewatering unit is preferably 200-300 DEG C, more preferably 230-280 DEG C.In the present invention
In, contact mode of heating of the flue gas with sludge is preferably adverse current Direct Contact Heating.The present invention is dry using sludge is delivered to
Wet mud is dried in the flue gas of dry dewatering unit, and the partial fume after drying, which contains a large amount of odorants, directly to be arranged
It puts, odorant is flared off in Equipment for Heating Processing by being come back in the form of Secondary Air；Partial fume enters exhaust-gas treatment
Unit is handled to qualified discharge.The present invention is gasified using the flue gas for being delivered to pyrolyzing sludge gasification unit as pyrolyzing sludge
Air source, realize pyrolyzing sludge gasification.In the present invention, it is described be delivered to pyrolyzing sludge gasification unit flue gas in oxygen content it is excellent
It is selected as 2-10%, more preferably 5-8%.The present invention is contained by adjusting Equipment for Heating Processing excess air coefficient to control oxygen in flue gas
Amount.
In the present invention, the sludge carbon is preferably delivered to sludge Carbon stock unit, the sludge carbon through belt conveyor
Adsorbent be can be used as fields such as exhaust gas treatment unit and exhaust gas, waste water and remediation contaminated soils.
Comprehensive utilization of mud device and method provided by the invention is described in detail with reference to embodiment, still
They cannot be interpreted as limiting the scope of the present invention.
Embodiment 1
Dewatered sludge from municipal sewage plant is delivered to wet mud storage tank through belt conveyor system, through wet dirt after
Wet mud is delivered in drying machine by mud belt conveyor system, wet mud and 300 DEG C of drying cigarette in horizontal drum drying machine
Gas is in direct contact, and wet mud is dried to the dewatered sludge that moisture content is 5%, subsequent dewatered sludge and is removed by cyclone dust collectors, cloth bag
The part dewatered sludge that dirt device is collected is delivered to dewatered sludge holding vessel through dewatered sludge transport system and preserves, and final dewatered sludge is defeated through belt
It send system to be delivered to pyrolyzing sludge gasification stove, pyrolytic gasification is carried out under the conditions of 600 DEG C, wherein pyrolyzing sludge gasifies stove first
By natural gas as fuel furnace lifting, fire box temperature is raised to 600 DEG C, when the sludge pyrolysis gas that pyrolyzing sludge gasification generates can continue
For seasonable, stopping supply natural gas uses sludge pyrolysis gas instead as pyrolyzing sludge gasification fuel.
Pyrolyzing sludge gasify stove generate sludge pyrolysis gas after bag-type dust by pipeline to gas storage tank is pyrolyzed, then
A part of sludge pyrolysis gas imports pyrolyzing sludge gasification stove as fuel, and burning generates the heat needed for pyrolyzing sludge gasification；One
Part is delivered to Industrial Stoves as gaseous fuel, burns wherein, realizes heat energy utilization.Sludge pyrolysis gas fires in Industrial Stoves
Burning the flue gas generated, temperature is at 300 DEG C after waste heat utilization equipment utilizes, and oxygen content is 5%, and subsequent part of smoke is as dry
Dry wind enters sludge drier, and wet mud is dried, and the flue gas after drying contains a large amount of odorants and is unable to direct emission,
Odorant is flared off in Industrial Stoves by being come back in the form of Secondary Air；Part of smoke is by pipeline to sludge
Pyrolysis gasification furnace realizes pyrolyzing sludge gasification as the air source of pyrolyzing sludge gasification.When sludge pyrolysis gas burns in Industrial Stoves
When the drying foul smell of generation, exhaust gas volumn are excessive, extra exhaust gas is reached the exhaust gas treatment unit processing for being filled with sludge carbon is entered
Mark discharge.
The sludge carbon that pyrolyzing sludge gasification unit generates is delivered to sludge carbon storage tank through belt conveyor, and subsequent sludge carbon is made
It is used for technology waste gas processing unit for adsorbent, while exhaust emission control field is used for using sludge carbon as adsorbent.Specifically
Technological process referring to Fig. 1.
Embodiment 2
Dewatered sludge from municipal sewage plant is delivered to wet mud storage tank through belt conveyor system, through wet dirt after
Wet mud is delivered to drying machine by mud belt conveyor system, wet mud and 250 DEG C of dry flue gas in horizontal drum drying machine
It is in direct contact, wet mud is dried to moisture content for 20% dewatered sludge, subsequent dewatered sludge and by cyclone dust collectors, bag-type dust
The part dewatered sludge that device is collected is delivered to dewatered sludge holding vessel through dewatered sludge belt conveyor system and preserves, and final dewatered sludge is through belt
Transport system is delivered to pyrolyzing sludge gasification stove, and pyrolytic gasification is carried out under the conditions of 450 DEG C, wherein pyrolyzing sludge gasification stove is first
Fire box temperature is first raised to 450 DEG C as fuel furnace lifting by natural gas, when the sludge pyrolysis gas that pyrolyzing sludge gasification generates can be held
Continue for seasonable, stopping supply natural gas, uses sludge pyrolysis gas instead as pyrolyzing sludge gasification fuel.
Pyrolyzing sludge gasify stove generate sludge pyrolysis gas after bag-type dust by pipeline to gas storage tank is pyrolyzed, then
A part of sludge pyrolysis gas imports pyrolyzing sludge gasification stove as fuel, and burning generates the heat needed for pyrolyzing sludge gasification；One
Part is delivered to Industrial Stoves as gaseous fuel, burns wherein, realizes heat energy utilization.Sludge pyrolysis gas fires in Industrial Stoves
Burning the flue gas generated, temperature is at 250 DEG C after waste heat utilization equipment utilizes, and oxygen content is 2%, and subsequent part of smoke is as dry
Dry wind enters sludge drier, and wet mud is dried, and the flue gas after drying contains a large amount of odorants and is unable to direct emission,
Odorant is flared off in Industrial Stoves by being come back in the form of Secondary Air；Part of smoke is by pipeline to sludge
Pyrolysis gasification furnace realizes pyrolyzing sludge gasification as the air source of pyrolyzing sludge gasification.When sludge pyrolysis gas burns in Industrial Stoves
When the drying foul smell of generation, exhaust gas volumn are excessive, extra exhaust gas is reached the exhaust gas treatment unit processing for being filled with sludge carbon is entered
Mark discharge.
The sludge carbon that pyrolyzing sludge gasification unit generates is delivered to sludge carbon storage tank through belt conveyor, and subsequent sludge carbon is made
It is used for technology waste gas processing unit for adsorbent, while contaminated wastewater control field is used for using sludge carbon as adsorbent.
Embodiment 3
Dewatered sludge from municipal sewage plant is delivered to wet mud storage tank through belt conveyor system, through wet dirt after
Wet mud is delivered to drying machine by mud belt conveyor system, wet mud and 200 DEG C of dry flue gas in horizontal drum drying machine
It is in direct contact, wet mud is dried to moisture content for 35% dewatered sludge, subsequent dewatered sludge and by cyclone dust collectors, bag-type dust
The part dewatered sludge that device is collected is delivered to dewatered sludge holding vessel through dewatered sludge belt conveyor system and preserves, and final dewatered sludge is through belt
Transport system is delivered to pyrolyzing sludge gasification stove, and pyrolytic gasification is carried out under the conditions of 350 DEG C, wherein pyrolyzing sludge gasification stove is first
Fire box temperature is first raised to 350 DEG C as fuel furnace lifting by natural gas, when the sludge pyrolysis gas that pyrolyzing sludge gasification generates can be held
Continue for seasonable, stopping supply natural gas, uses sludge pyrolysis gas instead as pyrolyzing sludge gasification fuel.
Pyrolyzing sludge gasify stove generate sludge pyrolysis gas after bag-type dust by pipeline to gas storage tank is pyrolyzed, then
A part of sludge pyrolysis gas imports pyrolyzing sludge gasification stove as fuel, and burning generates the heat needed for pyrolyzing sludge gasification；One
Part is delivered to Industrial Stoves as gaseous fuel, burns wherein, realizes heat energy utilization.Sludge pyrolysis gas fires in Industrial Stoves
Burning the flue gas generated, temperature is at 350 DEG C after waste heat utilization equipment utilizes, and oxygen content is 10%, and subsequent part of smoke is as dry
Dry wind enters sludge drier, and wet mud is dried, and the flue gas after drying contains a large amount of odorants and is unable to direct emission,
Odorant is flared off in Industrial Stoves by being come back in the form of Secondary Air；Part of smoke is by pipeline to sludge
Pyrolysis gasification furnace realizes pyrolyzing sludge gasification as the air source of pyrolyzing sludge gasification.When sludge pyrolysis gas burns in Industrial Stoves
When the drying foul smell of generation, exhaust gas volumn are excessive, extra exhaust gas is reached the exhaust gas treatment unit processing for being filled with sludge carbon is entered
Mark discharge.
The sludge carbon that pyrolyzing sludge gasification unit generates is delivered to sludge carbon storage tank through belt conveyor, and subsequent sludge carbon is made
It is used for technology waste gas processing unit for adsorbent, while soil pollution control field is used for using sludge carbon as adsorbent.
As seen from the above embodiment, complete in sludge treatment the present invention provides a kind of comprehensive utilization of mud device and method
Non-pollution discharge in the process avoids secondary pollution problem existing for existing Sludge Disposal Techniques, is a kind of green clean environment firendly
Recycling sludge dispose new technology；Using renewable resource -- sludge produces pyrolysis gas as raw material, and gas is provided for industrial production
Fuel, the fossil fuels such as alternative existing non-renewable coal, oil also reduce enterprise while reducing resource consumption
Industry production cost；While producing pyrolysis gas using sludge, solid absorbent is also produced -- sludge carbon can be used for exhaust gas, give up
Water and remediation contaminated soil realize that the treatment of wastes with processes of wastes against one another and recycling sludge utilize；Realize sludge safe, it is innoxious, clean,
Disposal of resources.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of comprehensive utilization of mud device, including the storage of wet mud Storing and conveying unit, drying sludge dewatering unit, dewatered sludge
Supply unit, pyrolyzing sludge gasification unit, sludge Carbon stock unit, Equipment for Heating Processing and exhaust gas treatment unit；The wet mud
Storing and conveying unit, drying sludge dewatering unit, dewatered sludge Storing and conveying unit, pyrolyzing sludge gasification unit and sludge Carbon stock
Unit is sequentially connected to, and the fuel source of the Equipment for Heating Processing gasifies unit in pyrolyzing sludge, what the Equipment for Heating Processing generated
Flue gas is delivered to pyrolyzing sludge gasification unit, drying sludge dewatering unit and exhaust gas treatment unit.
2. comprehensive utilization of mud device according to claim 1, which is characterized in that the wet mud Storing and conveying unit is
Sealing unit includes the wet mud belt conveyor system and wet mud storage tank of connection；The wet mud belt conveyor system and institute
State the connection of drying sludge dewatering unit.
3. comprehensive utilization of mud device according to claim 1, which is characterized in that the drying sludge dewatering unit includes
Drying machine, cyclone dust collectors and bag filter；The drying machine, cyclone dust collectors and bag filter are sequentially communicated；It is described
Drying machine is connected to the wet mud Storing and conveying unit；The drying machine dewatered sludge outlet, cyclone dust collectors cinder-discharging port,
The cinder-discharging port of bag filter is connected to the dewatered sludge Storing and conveying unit.
4. comprehensive utilization of mud device according to claim 1, which is characterized in that the dewatered sludge Storing and conveying unit is
Sealing unit includes the dewatered sludge storage tank and dewatered sludge transport system of connection；The dewatered sludge storage tank is de- with the drying sludge
Water unit is connected to, and the dewatered sludge transport system is connected to pyrolyzing sludge gasification unit.
5. comprehensive utilization of mud device according to claim 1, which is characterized in that pyrolyzing sludge gasification unit includes
Pyrolyzing sludge gasification stove, bag filter and pyrolysis gas storage tank；The pyrolyzing sludge gasification stove and the dewatered sludge Storing and conveying
Unit is connected to, and the sludge pyrolysis gas generated in the pyrolyzing sludge gasification stove is delivered to the pyrolysis after bag filter dedusting
In gas storage tank, the sludge pyrolysis gas in the pyrolysis gas storage tank is delivered to Equipment for Heating Processing and pyrolyzing sludge gasification stove as fuel
In.
6. a kind of method that Treatment of Sludge is carried out using any one of Claims 1 to 5 comprehensive utilization of mud device, including with
Lower step：
(1) pending mud is dried and dehydrated through wet mud Storing and conveying unit transportation to drying sludge dewatering unit, is obtained
To dewatered sludge；
(2) dewatered sludge is subjected to pyrolytic gasification through dewatered sludge Storing and conveying unit transportation to pyrolyzing sludge gasification unit, obtained
To sludge pyrolysis gas and sludge carbon；
(3) the sludge carbon is delivered to sludge Carbon stock unit；Using partial sludge pyrolysis gas as fuel reuse to sludge hot
Gasification unit is solved, Equipment for Heating Processing is delivered to using excess sludge pyrolysis gas as fuel, production of burning in the Equipment for Heating Processing
Raw flue gas；
(4) partial fume is delivered to drying sludge dewatering unit and pyrolyzing sludge gasification unit, remaining flue gas is delivered to useless
Qualified discharge after gas disposal unit is handled.
7. according to the method described in claim 6, it is characterized in that, the moisture content of dewatered sludge is 5-35% in the step (1).
8. according to the method described in claim 6, it is characterized in that, the temperature of pyrolytic gasification is 350-600 in the step (2)
℃。
9. according to the method described in claim 6, it is characterized in that, being delivered to drying sludge dewatering unit in the step (4)
Flue gas temperature be 200-300 DEG C.
10. according to the method described in claim 6, it is characterized in that, being delivered to pyrolyzing sludge gasification unit in the step (4)
Flue gas in oxygen content be 2-10%.
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Cited By (1)
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| CN111073708A (en) * | 2018-10-22 | 2020-04-28 | 龙璞绿能企业股份有限公司 | Organic sludge and biomass waste treatment method |
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