CN105753281A - Commercial treatment method and system for biological sludge and rotary sludge carbonizing machine - Google Patents
Commercial treatment method and system for biological sludge and rotary sludge carbonizing machine Download PDFInfo
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- CN105753281A CN105753281A CN201610266851.XA CN201610266851A CN105753281A CN 105753281 A CN105753281 A CN 105753281A CN 201610266851 A CN201610266851 A CN 201610266851A CN 105753281 A CN105753281 A CN 105753281A
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Classifications
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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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Treatment Of Sludge (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention relates to resourceful treatment on biological sludge.A commercial treatment method for biological sludge includes the steps that the biological sludge is dried, the dried sludge with the water content being 7-10% is carbonized and generates biochar, pyroligneous liquor and biological tar through high-temperature pyrolysis, and biochar, pyroligneous liquor and biological tar are packaged for sale; methane gas generated in the treatment process is recovered and used for carbonization treatment on the dried sludge.According to a rotary sludge carbonizing machine, a handpiece component and a tail component are fixed to the two ends of a rack, the two ends of a rotary cylinder are inserted into the handpiece component and the tail component and matched with the handpiece component and the tail component in a sealed mode, and a supporting and driving mechanism matched with the rotary cylinder is arranged on the rack; a guiding plate is arranged on the front portion of the rotary cylinder, a lifting plate is arranged on the inner wall of the rotary cylinder, and a combustor is arranged in a heat preservation outer cover below the rotary cylinder.A commercial treatment system for the biological sludge comprises biological sludge drying treatment complete equipment and dried sludge carbonizing treatment complete equipment.The harmful biological sludge is turned into wealth, and the commercial treatment method and system for the biological sludge have high socioeconomic performance and can create huge wealth for enterprises and the society.
Description
Technical field
The present invention relates to a kind of biological sludge processing method and system, especially relate to a kind of biological sludge commercial treatment method and system and biological sludge process equipment rotary type sludge carbonization machine.
Background technology
By in by the end of September, 2015, whole nation the planned city, county add up to build up sewage treatment plant 3830, and sewage treatment capacity reaches 1.62 billion cubic meters/day, annual more than 4,000 ten thousand tons of the mud producing water content 80%.Mud produced by wastewater treatment in China factory, has 80% not dealt carefully with, and mud is arbitrarily stacked the pollution problem caused and caused the concern of society.State Council issue " ten, water " clear stipulaties: " existing specific resistance to filtration facility should be basically completed before the end of the year 2017 transformation up to standard, region and above municipal sludge harmless treatment disposal rate should at the bottom of in the year two thousand twenty before reach more than 90% "。Various places environmental administration strengthens in successionAdministrativeLaw enforcement dynamics, forbids sewage treatment plant disorderly to fall mud.Beijing Youth Daily's report on July 6th, 2015: " a large amount of mud in Beijing surrounds sewage treatment plant; this city forbids the ground such as mud outward transport Hebei from this year; but major part sewage treatment plant does not have Treatment of Sludge auxiliary facility; and the project built up can not effectively play a role again; mud can only be deposited in sewage treatment plant, stinks to high heaven and has grown a large amount of mosquitos and flies "。Central and local governmentsGovernmentStrengthen treating sludge dynamics, force the supporting sludge treatment facilities of sewage treatment plant.
Specific resistance to filtration technology requirement in State Council's " " 12 " whole nation urban wastewater treatment and planning of regeneration Facilities Construction ": "Encourage after anaerobic digestion methane production or aerobic fermentation process, strictly press mudCountryStandard carries out the Land_use change such as soil improvement, afforestation, does not possess Land_use change condition, can after sludge drying with the cooperative disposal such as cement plant, coal-burning power plant or burning；As recent transition processing disposal options, landfill stabilization can be carried out by after deeply dehydrating sludge lime stabilization "。The demonstrative project introduced due to anaerobic sludge digestion treatment technology also imperfection stops production in succession, and sludge aerobic compost processes odor pollution environment addressing difficulty and is also out of favour；Sludge drying, burning and deep dehydration lime stabilization+landfill disposal technology become main flow.But, sludge drying, burning disposal construction investment and daily running cost are high, make localityGovernmentOr sewage treatment plant hangs back；Deep dehydration lime stabilization+landfill disposal is an interim excessive mode no future, and along with understanding in depth its drawback, the attitude of selection is more and more careful.
Biological sludge treatment technology Environmental Safety is the first element, in prior art, comparatively, sludge drying, burning disposal are one preferred technique.The process of existing sludge drying is generally adopted indirectly heating and drying, and heat utilization rate and treatment effeciency are relatively low, and the moisture percentage in sewage sludge after process is higher, bring difficulty for follow-up burning disposal；Big and medium-sized cities, the whole nation are all administering air pollution now, seriously constrain the popularization of sludge incineration technology.
Have been widely used for the swinging desiccation machine of the industry such as cement, coal washing decades, mummification material heat utilization rate and mummification ultrahigh in efficiency, material water ratio after mummification cost and mummification is extremely low, and technology maturation, investment and running cost are cheap, and shortcoming is the drying and other treatment not being suitable for biological sludge.
Summary of the invention
The present invention is directed to prior art deficiency, it is proposed that a kind of biological sludge commercial treatment method, and a kind of biological sludge commercial treatment system, and propose a kind of rotary type sludge carbonization machine.
The technical solution adopted in the present invention:
A kind of biological sludge commercial treatment method, first carries out drying and other treatment to biological sludge, obtains the dewatered sludge that moisture content is 7～10%；
Again, the dewatered sludge that moisture content is 7～10% being carried out carbonization treatment, described carbonization treatment process is completely in anoxybiotic state, and dewatered sludge generates charcoal, methane gas, wood vinegar and biological tar through Pintsch process carbonization；
3rd, the methane gas that dewatered sludge carbonization treatment process produces, reclaim the carbonization treatment for dewatered sludge, residue methane gas is for the drying and other treatment of biological sludge；
4th, the charcoal that dewatered sludge carbonization treatment process produces, after supercooling processes, load woven bag or pump into sale in holding vessel；
5th, the wood vinegar that dewatered sludge carbonization treatment process produces, pump into 2～4% charcoal decolourings adding wood vinegar weight in reactor and remove impurity, it is sufficiently stirred for postprecipitation, then the acetum pyrolignosum rectificatum liquid pumping reactor top loads Plastic Drum or pumps into sale in holding vessel, and the charcoal mud of reactor bottom participates in backflow carbonization treatment in dewatered sludge；
6th, the biological tar that dewatered sludge carbonization treatment process produces, load in large-bore plastics bucket after supercooling processes and sell.
Described biological sludge commercial treatment method, in dewatered sludge carbonization treatment process, adopt rotary type sludge carbonization machine, by controlling carbonization machine charging rate, carbonization machine rotating speed and methane gas combustor air inlet amount, controlling carburizing temperature and carbonization efficiency, the carburizing temperature of dewatered sludge controls at 500～600 degrees Celsius, and charcoal drop temperature controls at 40～50 degrees Celsius, the cooled tower cooling of high-temperature gas that dewatered sludge carbonization produces, isolates methane gas, wood vinegar and biological tar.
Described biological sludge commercial treatment method, in biological sludge drying and other treatment process, the biological sludge that moisture content is 78～82% is added the backflow dewatered sludge of 1.3～1.8 times of moisture content 7～10% of biological sludge weight, it is sufficiently stirred for, obtain the mixing sludge that moisture content is 35～40%, it is then fed in rotary type sludge desiccation machine and carries out drying and other treatment, obtain the dewatered sludge that moisture content is 7～10%.
Described biological sludge commercial treatment method, by controlling the high-temperature flue-gas that rotary type sludge desiccation machine charging rate, desiccation machine rotating speed and air stove produce, three organically combines, control dewatered sludge drop temperature and discharging moisture content, dewatered sludge drop temperature controls at 80～100 degrees Celsius, discharging moisture content 15～18%, distributes moisture through cooling, obtains the dewatered sludge that moisture content is 7～10%.
A kind of rotary type sludge carbonization machine, including frame (8), head part (3), tail assemblies (11) and revolving drum (16), described head part and tail assemblies are fixed on the two ends of frame, revolving drum two is inserted head part and tail assemblies and closes cooperation, frame coordinates with described revolving drum and is provided with support roller station (9) and driving mechanism, described head part top is provided with dewatered sludge import (1) and decomposition gas outlet (2) of carbonization generation, is provided with charcoal outlet (10) bottom tail assemblies；Described revolving drum front portion is provided with stock guide (4), and described stock guide installation site is corresponding with the dewatered sludge import at head position, and described revolving drum inwall is provided with lifting blade (15)；Described head part, tail assemblies and revolving drum periphery are provided with insulating cover layer, are provided with burner (7) below described revolving drum in insulating cover layer, and the insulating cover layer above revolving drum is provided with combustion flue gas outlet (14).
Described rotary type sludge carbonization machine, in order to ensure that stock guide is firm, the inner edge of all stock guides (4) is respectively adopted two sections of torus and is sequentially connected with fixing, each stock guide (4) rear end is fixing with lifting blade and revolving drum to be connected, stock guide top is close to head part inwall and is played scraper effect, and relies on stock guide angle when rotated by raw material landing forward, propelling.
A kind of biological sludge commercial treatment system, including biological sludge drying and other treatment complete set of equipments and dewatered sludge carbonization treatment complete set of equipments, described biological sludge drying and other treatment complete set of equipments includes mud mixing and stirring system, rotary type sludge desiccation machine and air stove or fluidized bed furnace；Described dewatered sludge carbonization treatment complete set of equipments includes rotary type sludge carbonization machine, methane gas utilizes device, charcoal and wood vinegar collect storage device, wood vinegar precise machining device；Biological sludge is sufficiently mixed into mixing sludge and sends into rotary type sludge desiccation machine, air stove or fluidized bed furnace for rotary type sludge desiccation machine offer thermal source by mud mixing and stirring system with backflow dewatered sludge；Rotary type sludge desiccation machine output moisture content is the dewatered sludge of 7～10%, is then fed into rotary type sludge carbonization machine and carries out carbonization treatment.
Described biological sludge commercial treatment system, described mud mixing and stirring system includes mud impeller pump, loader, dewatered sludge material storing box, twin shaft massing machine and ribbon conveyer；Biological sludge is entered from twin shaft strong stirring chain-drive section dosing pump by mud impeller pump, backflow dewatered sludge is loaded in dewatered sludge material storing box by loader, backflow dewatered sludge is quantitatively discharged into by the metering discharger bottom dewatered sludge material storing box from twin shaft strong stirring chain-drive section, a certain proportion of biological sludge and backflow dewatered sludge are sufficiently stirred for mixing in twin shaft massing machine, mixing sludge is discharged from twin shaft strong stirring drive end unit, is transported in rotary type sludge desiccation machine feed hopper through ribbon conveyer；Mud mixing, stirring, mummification overall process are run continuously.
Described biological sludge commercial treatment system, described air stove, including burn self-produced dewatered sludge and burning coal, burning natural gas, the air stove of burning diesel oil or fluidized bed furnace；Described fluidized bed furnace, adopts exhaust gas recirculation to use device, and fuel combustion waste gas and desiccation machine dewatered sludge waste gas by 80～85% introduce in fluidized bed furnace and uses.
Described biological sludge commercial treatment system, described rotary type sludge desiccation machine, it is different in that with the swinging desiccation machine being widely used in the industry such as cement, coal washing, the netted inner core of stainless steel sift it is provided with in revolving drum, mesh-like inner core is provided with secondary lifting blade, and mesh-like inner core rear portion is provided with semi-oriented mud reducing mechanism.
Beneficial effects of the present invention:
1, biological sludge commercial treatment method and system of the present invention, adopt rotary type sludge desiccation machine by biological sludge drying and other treatment, then adopt rotary type sludge carbonization machine that dewatered sludge carbonization is processed into charcoal and side-product, and Environmental Safety performance is higher.Sludge drying processes the waste gas produced and only processes 15～20% handlings with relatively low, and dewatered sludge high temperature cabonization uses self-produced environment-friendly fuel methane gas；Sludge drying processes the self-produced dewatered sludge of fuel of use, coal, natural gas, diesel oil can according to local environmental requirement and the operating cost person of choosing.
2, biological sludge commercial treatment method and system of the present invention, reform swinging desiccation machine and sludge drying process novelty, and lignin-sludge speed, processing cost is cheap, and treatment scale is huge up to thousands of ton day ranks.It is suitable for treatment in situ in the biological sludge factory that large-scale sewage treatment plants produces, or the mud that several middle or small sewage treatment produces concentrates on process in a sewage treatment plant, be quickly administer biological sludge to pollute most efficient method；Sludge drying processing procedure completes within half an hour, it is to avoid sludge fermentation produces stink.
3, biological sludge commercial treatment method of the present invention, invests little, and operating cost is cheap, and its popularization and application can produce good Social and economic benef@.Adopt biological sludge commercial treatment method of the present invention, Treatment of Sludge engineering investment cost be existing sludge drying, burning disposal engineering investment cost 6.67%, daily running cost is existing sludge drying, burns the 8.2% of daily running cost, saves huge engineering investment cost and Treatment of Sludge expense；Charcoal that biological sludge is processed into market in urgent need, that capacity is huge and side-product, make the biological sludge being harmful to become commodity, for enterprise and social creativity great riches.
4, biological sludge commercial treatment method of the present invention, applied widely.It is not only applicable to biological sludge process, is also adaptable for processing domestic waste, changing food waste, building septic tank sludge, plant's feces mud etc., be various rubbish most environmental protection, the safest, the most quick, the most most economical processing method.
5, biological sludge commercial treatment system of the present invention, technology maturation, to process technique and equipment simple, automation degree of equipment height, long service life, cheap；Process shorter 3～4 months of engineering construction cycle can complete, technology spreading speed fast.
6, rotary type sludge carbonization machine of the present invention, technique novel in design, rational in infrastructure, produce continuously from raw material feeds to finished product packing and automatically control, simplify sludge carbonization program, substantially increase mud carbonization efficiency, mud carbonization is with low cost；The auxiliary equipment such as supporting burning gases recycle device is simple, practical, and security performance is high.
Accompanying drawing explanation
Fig. 1It is biological sludge commercial treatment method technological process of the present invention and system compositionFigure；
Fig. 2It it is rotary type sludge carbonization machine agent structure of the present invention signalFigure；
Fig. 3~Fig. 7It is respectivelyFig. 2The each portion structure signal of middle A, B, C, D, EFigure；
Fig. 8It it is mud mixing and stirring system structural representation in biological sludge commercial treatment system of the present inventionFigure；
Fig. 9It it is mud mixing and stirring system side-looking structural representation in biological sludge commercial treatment system of the present inventionFigure。
Detailed description of the invention
Below by detailed description of the invention, technical scheme is described in further detail.
Embodiment 1
Referring toFig. 1, the biological sludge commercial treatment method of the present invention, its processed process that biological sludge is adopted is as follows:
First biological sludge is carried out drying and other treatment, obtain the dewatered sludge that moisture content is 7～10%；
Again, the dewatered sludge that moisture content is 7～10% being carried out carbonization treatment, described carbonization treatment process is completely in anoxybiotic state, and dewatered sludge generates charcoal, methane gas, wood vinegar and biological tar through Pintsch process carbonization；
3rd, the methane gas that dewatered sludge carbonization treatment process produces, reclaim the carbonization treatment for dewatered sludge, residue methane gas is for biological sludge drying and other treatment；
4th, the charcoal that dewatered sludge carbonization treatment process produces, after supercooling processes, load woven bag or pump into sale in holding vessel；
5th, the wood vinegar that dewatered sludge carbonization treatment process produces, pump into 2～4% charcoal decolourings adding wood vinegar weight in reactor and remove impurity, it is sufficiently stirred for, precipitate 24 hours, then the acetum pyrolignosum rectificatum liquid pumping reactor top loads Plastic Drum or pumps into sale in holding vessel, and the charcoal mud of reactor bottom participates in backflow carbonization treatment in dewatered sludge；
6th, the biological tar that dewatered sludge carbonization treatment process produces, load in large-bore plastics bucket after supercooling processes and sell.
Aforementioned serial no marks, and only illustrates there is such a flow process, is not the restriction to flow process order.
Embodiment 2
Referring toFig. 1The biological sludge commercial treatment method of the present embodiment, it is different in that with embodiment 1: further, in dewatered sludge carbonization treatment process, adopt rotary type sludge carbonization machine, by controlling carbonization machine charging rate, carbonization machine rotating speed and methane gas combustor air inlet amount, control carburizing temperature and carbonization efficiency, the carburizing temperature of dewatered sludge controls at 500～600 degrees Celsius, charcoal drop temperature controls at 40～50 degrees Celsius, the cooled tower cooling of high-temperature gas that dewatered sludge carbonization produces, isolates methane gas, wood vinegar and biological tar.
Adopting mud carbonization machine by moisture content 7～10% dewatered sludge carbonization, dewatered sludge generates charcoal, methane gas, wood vinegar and bio oil through Pintsch process；The methane gas produced is for mud carbonization machine heating carbonization dewatered sludge, and carbonization, aerogenesis, heating constantly circulate, it is achieved that recycling of regenerated resources, energy-conserving and environment-protective.
Embodiment 3
Referring toFig. 1The biological sludge commercial treatment method of the present embodiment, it is different in that with embodiment 1 or embodiment 2: in biological sludge drying and other treatment process, the biological sludge that moisture content is 78～82% is added the backflow dewatered sludge of 1.3～1.8 times of moisture content 7～10% of biological sludge weight, it is sufficiently stirred for, obtain the mixing sludge that moisture content is 35～40%, be then fed in rotary type sludge desiccation machine and carry out drying and other treatment, obtain the dewatered sludge that moisture content is 7～10%.
Embodiment 4
Referring toFig. 1The biological sludge commercial treatment method of the present embodiment, it is different in that with embodiment 3: in biological sludge drying and other treatment process, by controlling the high-temperature flue-gas that sludge drying machine charging rate, desiccation machine rotating speed and air stove produce, three organically combines, and controls dewatered sludge drop temperature and discharging moisture content, dewatered sludge drop temperature controls at 80～100 degrees Celsius, discharging moisture content 15～18%, distributes moisture through cooling, obtains the dewatered sludge that moisture content is 7～10%.
Embodiment 5
Referring toFig. 2~Fig. 7The present embodiment is a kind of detailed description of the invention of rotary type sludge carbonization machine, described rotary type sludge carbonization machine, including frame 8, head part 3, tail assemblies 11 and revolving drum 16, described head part 3 and tail assemblies 11 are fixed on the two ends of frame 8, revolving drum 16 two is inserted head part and tail assemblies and closes cooperation, revolving drum is placed on support roller station 9, support roller station 9 is fixed in frame, head part top is provided with the decomposition gas outlet 2 of dewatered sludge import 1 and carbonization generation, is provided with charcoal outlet 10 bottom tail assemblies；The front portion of described revolving drum 6 and dewatered sludge import correspondence position are provided with stock guide 4, and described stock guide installation site is corresponding with the dewatered sludge import at head position, and revolving drum inwall is provided with lifting blade 15；Described head part, tail assemblies and revolving drum periphery are provided with insulating cover layer, are provided with burner 7 below described revolving drum in insulating cover layer, and the insulating cover layer above revolving drum is provided with combustion flue gas outlet 14.
Embodiment 6
The rotary type sludge carbonization machine of the present embodiment, it is different in that with embodiment 5: in order to ensure that stock guide is firm, the inner edge of all stock guides is respectively adopted two sections of torus and is sequentially connected with fixing, each stock guide 4 rear end is fixing with lifting blade and revolving drum to be connected, stock guide top is close to head part inwall and is played scraper effect, and relies on stock guide angle when rotated by raw material landing forward, propelling.
ThisInventionRotary type sludge carbonization machine, stock guide 4 is before revolving drumPortion is independentArranging, it is fixing that all stock guide inner edges adopt cylinder to strengthen, and rear portion connects fixing (can rotate together with revolving drum and lifting blade) with lifting blade and revolving drum, and stock guide can play lifting simultaneously and raw material preheats effect.
Frame coordinates with described revolving drum and is provided with driving mechanism.Described driving mechanism includes driving power device 18 and drives gear wheel 5, and described driving gear wheel 5 and driving power device 18 are in transmission connection.
In figureLabel 12 is heat-insulation layer cover, and 13 is heat-insulation layer.Heat-insulation layer adopts asbestos; asbestos thickness 40～60mm; steel plate protective layer cover it is provided with outside asbestos; steel plate thickness 2～4mm; asbestos and head part and the insulation of tail assemblies gapless; asbestos and revolving drum gap 100～150mm, the insulating cover layer top on revolving drum sets combustion flue gas outlet 6, revolving drum support roller support zone and driving gear wheel installation position and does not install attemperator.
In figureLabel 17 is feed bin, and 19 is cooling discharge machine, and 20 is screw feeding machine.
Embodiment 7
Referring toFig. 1、Fig. 2,Fig. 8、Fig. 9.The present embodiment is biological sludge commercial treatment system embodiment.
Described biological sludge commercial treatment system, including biological sludge drying and other treatment complete set of equipments and dewatered sludge carbonization treatment complete set of equipments, described biological sludge drying and other treatment complete set of equipments includes mud mixing and stirring system, rotary type sludge desiccation machine and air stove or fluidized bed furnace；Described dewatered sludge carbonization treatment complete set of equipments includes rotary type sludge carbonization machine, methane gas utilizes device, charcoal and wood vinegar collect storage device, wood vinegar precise machining device；Biological sludge is sufficiently mixed into mixing sludge and sends into rotary type sludge desiccation machine, air stove or fluidized bed furnace for rotary type sludge desiccation machine offer thermal source by mud mixing and stirring system with backflow dewatered sludge；Rotary type sludge desiccation machine output moisture content is the dewatered sludge of 7～10%, is then fed into rotary type sludge carbonization machine and carries out carbonization treatment.
Embodiment 8
Referring toFig. 1、Fig. 2,Fig. 8、Fig. 9.The biological sludge commercial treatment system of the present embodiment, is different in that with embodiment 7: described mud mixing and stirring system includes mud impeller pump, loader, dewatered sludge material storing box, twin shaft massing machine and ribbon conveyer；Biological sludge is entered from twin shaft strong stirring chain-drive section dosing pump by mud impeller pump, backflow dewatered sludge is loaded in dewatered sludge material storing box by loader, backflow dewatered sludge is quantitatively discharged into by the metering discharger bottom dewatered sludge material storing box from twin shaft strong stirring chain-drive section, a certain proportion of biological sludge and backflow dewatered sludge are sufficiently stirred for mixing in twin shaft massing machine, mixing sludge is discharged from twin shaft strong stirring drive end unit, is transported in rotary type sludge desiccation machine feed hopper through ribbon conveyer；Mud mixing, stirring, mummification overall process successively automatically control.
Described fluidized bed furnace, is different in that with the fluidized bed furnace being widely used in the industry such as cement, coal washing, adopts exhaust gas recirculation to use device, and fuel combustion waste gas and desiccation machine dewatered sludge waste gas by 80～85% introduce in fluidized bed furnace and uses.Air stove or fluidized bed furnace, according to various places urban environmental protection requirement, it is possible to burn self-produced dewatered sludge and coal, natural gas, diesel oil etc..
Fig. 8、Fig. 9In, label 1 is dewatered sludge material storing box, and 2 measure discharger for speed governing, and 3 is dewatered sludge import, and 4 is twin shaft massing machine, and 5 is watch window, and 6 is the adjustable outlet of mixing sludge, and 7 is biological sludge import.
Embodiment 9
Referring toFig. 1、Fig. 2,Fig. 8、Fig. 9.The biological sludge commercial treatment system of the present embodiment, it is different in that with embodiment 7 or embodiment 8: described rotary type sludge desiccation machine, it is different in that with the swinging desiccation machine being widely used in the industry such as cement, coal washing, the netted inner core of stainless steel sift it is provided with in revolving drum, mesh-like inner core is provided with secondary lifting blade, and mesh-like inner core rear portion is provided with semi-oriented mud reducing mechanism.Revolving drum inwall compound 2～3mm corrosion resistant plate, described lifting blade adopts 4～5mm corrosion resistant plate.
Biological sludge commercial treatment method and system of the present invention, first biological sludge is carried out drying and other treatment, again the dewatered sludge that moisture content is 7～10% being carried out carbonization treatment, dewatered sludge generates charcoal, methane gas, wood vinegar and biological tar through Pintsch process carbonization；The methane gas that dewatered sludge carbonization treatment process produces, reclaims the carbonization treatment for dewatered sludge, and residue methane gas is for biological sludge drying and other treatment.
The charcoal that dewatered sludge carbonization treatment process produces, loads woven bag after supercooling processes or pumps into sale in holding vessel, for soil improvement, fertilizer interpolation, fertilizer slow release carrier, carbon fixation and emission reduction, water source purifying, heavy metal adsorption etc.；The wood vinegar that dewatered sludge carbonization treatment process produces, can be used for soil conditioner, plant growth regulator, feed additive etc.；The biological tar that dewatered sludge carbonization treatment process produces, loads in large-bore plastics bucket after supercooling processes and sells, for fuel, biodiesel raw material, plastic plasticizer etc..
Following for biological sludge commercial treatment method and system of the present invention operation economic conditions analysis:
Referring to following table: the various processing method of biological sludge compares
In tableData illustrate: compost treatment, Xichun County of Henan Province Treatment of Sludge factory aerobic compost processing item；Deep dehydration+landfill, Anhui Tongyuan Source Environment Co., Ltd.'s deeply dehydrating sludge project quotation；Semi-oriented, sludge drying project in litchi garden, Guangzhou Datansha WWTP factory；Semi-oriented and burn, Shenzhen Shang Yang sludge incineration factory sludge semi-dry+burning project；The online public information of source of data.The present invention is for the biological sludge processing factory of processed biological sludge 500 ton day: investment cost 20,000,000 yuan, wherein equipment investment 7,800,000 yuan, construction investment 9,190,000 yuan, other 3,010,000 yuan；Daily running cost, adopt average 43.4 yuan/ton of self-produced dewatered sludge fuel 21700 yuan/day, adopt average 95 yuan/ton of coal fuel 47500 yuan, adopt average 209.2 yuan/ton of gas fuel 104600 yuan/day, adopt average 288 yuan/ton of diesel fuel 144000 yuan/day；Running income: adopt self-produced dewatered sludge fuel 3347.8 ten thousand yuan/year；Adopt coal fuel 42,450,000 yuan/year；Adopt natural gas and diesel fuel 42,450,000 yuan/year, separately mend natural gas, diesel oil and coal price difference；The Treatment of Sludge collected is taken by 200 yuan/ton of calculating, market price 250～500 yuan/ton.
Domestic and international expert starts to be applied to charcoal the development test of agriculture field from the nineties.Charcoal improving agricultural soil available water, reduce fertilizer loss and build up fertility, improve soil microorganism system, alleviate soil acidification, reduce the biological effectiveness of heavy metal in soil and improve in crop yield, quality and play an important role.Test through expert: the crops such as grain, vegetable, melon and fruit are used charcoal and can improve yield 10～30%, and Herba Spinaciae yield can improve 56%；Fruit tree uses charcoal can improve fruit keeping quality, fruit quality, particularly improves the aromatic substance in fruit.China's charcoal uses agricultural aspect seldom, and reason is the raw materials for production problem of charcoal, and primary raw material agricultural crop straw has seasonality, and purchase is difficult and relatively costly.Existing charcoal raw material is mainly lower horn scraps and Exocarpium cocois (Cocos nucifera L), the rice husk etc. of bamboo and wood goods, is free, charcoal raw material endlessly after biological sludge drying and other treatment.Containing the heavy metal of trace in biological sludge, through mummification, carbonization heavy metal Hg, arsenic by steam raising, heavy metal cadmium, lead, chromium are molten into glassy mass and solidify, and lose and biological can not be absorbed and used by plants.
Existing biological sludge treatment technology is relatively low due to Environmental Safety performance, and Treatment of Sludge construction investment and daily running cost are higher, constrain the improvement of sludge pollution.The Environmental Safety performance that the present invention is excellent, ultralow construction investment and handling use, super treatment scale and ultrafast processing speed and dewatered sludge processing extra earning etc., every economic and technical norms advantage highlights, and other sludge disposal technologies are too far behind to catch up.The present invention makes the biological sludge being harmful to become regenerative raw materials, becomes the commodity that market is well sold and in short supply, and biological sludge is processed into charcoal will play positive role to agriculture field, particularly administers soil sandification and could be made that contribution.
Claims (10)
1. a biological sludge commercial treatment method, first carries out drying and other treatment to biological sludge, obtains the dewatered sludge that moisture content is 7～10%；It is characterized in that:
Again, the dewatered sludge that moisture content is 7～10% being carried out carbonization treatment, described carbonization treatment process is completely in anoxybiotic state, and dewatered sludge generates charcoal, methane gas, wood vinegar and biological tar through Pintsch process carbonization；
3rd, the methane gas that dewatered sludge carbonization treatment process produces, reclaim the carbonization treatment for dewatered sludge, residue methane gas is for the drying and other treatment of biological sludge；
4th, the charcoal that dewatered sludge carbonization treatment process produces, after supercooling processes, load woven bag or pump into sale in holding vessel；
5th, the wood vinegar that dewatered sludge carbonization treatment process produces, pump into 2～4% charcoal decolourings adding wood vinegar weight in reactor and remove impurity, it is sufficiently stirred for postprecipitation, then the acetum pyrolignosum rectificatum liquid pumping reactor top loads Plastic Drum or pumps into sale in holding vessel, and the charcoal mud of reactor bottom participates in backflow carbonization treatment in dewatered sludge；
6th, the biological tar that dewatered sludge carbonization treatment process produces, load in large-bore plastics bucket after supercooling processes and sell.
2. biological sludge commercial treatment method according to claim 1, it is characterized in that: in dewatered sludge carbonization treatment process, adopt rotary type sludge carbonization machine, by controlling carbonization machine charging rate, carbonization machine rotating speed and methane gas combustor air inlet amount, control carburizing temperature and carbonization efficiency, the carburizing temperature of dewatered sludge controls at 500～600 degrees Celsius, charcoal drop temperature controls at 40～50 degrees Celsius, the cooled tower cooling of high-temperature gas that dewatered sludge carbonization produces, isolates methane gas, wood vinegar and biological tar.
3. biological sludge commercial treatment method according to claim 1 and 2, it is characterized in that: in biological sludge drying and other treatment process, the biological sludge that moisture content is 78～82% is added the backflow dewatered sludge of 1.3～1.8 times of moisture content 7～10% of biological sludge weight, it is sufficiently stirred for, obtain the mixing sludge that moisture content is 35～40%, it is then fed in rotary type sludge desiccation machine and carries out drying and other treatment, obtain the dewatered sludge that moisture content is 7～10%.
4. biological sludge commercial treatment method according to claim 3, it is characterized in that: by controlling the high-temperature flue-gas that rotary type sludge desiccation machine charging rate, desiccation machine rotating speed and air stove produce, three organically combines, control dewatered sludge drop temperature and discharging moisture content, dewatered sludge drop temperature controls at 80～100 degrees Celsius, discharging moisture content 15～18%, distributes moisture through cooling, obtains the dewatered sludge that moisture content is 7～10%.
5. a rotary type sludge carbonization machine, including frame (8), head part (3), tail assemblies (11) and revolving drum (16), described head part and tail assemblies are fixed on the two ends of frame, revolving drum two is inserted head part and tail assemblies and closes cooperation, frame coordinates with described revolving drum and is provided with support roller station (9) and driving mechanism, described head part top is provided with dewatered sludge import (1) and decomposition gas outlet (2) of carbonization generation, is provided with charcoal outlet (10) bottom tail assemblies；It is characterized in that: described revolving drum front portion is provided with stock guide (4), described stock guide installation site is corresponding with the dewatered sludge import at head position, and described revolving drum inwall is provided with lifting blade (15)；Described head part, tail assemblies and revolving drum periphery are provided with insulating cover layer, are provided with burner (7) below described revolving drum in insulating cover layer, and the insulating cover layer above revolving drum is provided with combustion flue gas outlet (14).
6. rotary type sludge carbonization machine according to claim 5, it is characterized in that: in order to ensure that stock guide is firm, the inner edge of all stock guides (4) is respectively adopted two sections of torus and is sequentially connected with fixing, each stock guide (4) rear end is fixing with lifting blade and revolving drum to be connected, stock guide top is close to head part inwall and is played scraper effect, and relies on stock guide angle when rotated by raw material landing forward, propelling.
7. a biological sludge commercial treatment system, including biological sludge drying and other treatment complete set of equipments and dewatered sludge carbonization treatment complete set of equipments, it is characterised in that: described biological sludge drying and other treatment complete set of equipments includes mud mixing and stirring system, rotary type sludge desiccation machine and air stove or fluidized bed furnace；Described dewatered sludge carbonization treatment complete set of equipments includes rotary type sludge carbonization machine, methane gas utilizes device, charcoal and wood vinegar collect storage device, wood vinegar precise machining device；Biological sludge is sufficiently mixed into mixing sludge and sends into rotary type sludge desiccation machine, air stove or fluidized bed furnace for rotary type sludge desiccation machine offer thermal source by mud mixing and stirring system with backflow dewatered sludge；Rotary type sludge desiccation machine output moisture content is the dewatered sludge of 7～10%, is then fed into rotary type sludge carbonization machine and carries out carbonization treatment.
8. biological sludge commercial treatment system according to claim 7, it is characterised in that: described mud mixing and stirring system includes mud impeller pump, loader, dewatered sludge material storing box, twin shaft massing machine and ribbon conveyer；Biological sludge is entered from twin shaft strong stirring chain-drive section dosing pump by mud impeller pump, backflow dewatered sludge is loaded in dewatered sludge material storing box by loader, backflow dewatered sludge is quantitatively discharged into by the metering discharger bottom dewatered sludge material storing box from twin shaft strong stirring chain-drive section, a certain proportion of biological sludge and backflow dewatered sludge are sufficiently stirred for mixing in twin shaft massing machine, mixing sludge is discharged from twin shaft strong stirring drive end unit, is transported in rotary type sludge desiccation machine feed hopper through ribbon conveyer；Mud mixing, stirring, mummification overall process are run continuously.
9. biological sludge commercial treatment system according to claim 7, it is characterised in that: described air stove, including burn self-produced dewatered sludge and burning coal, burning natural gas, the air stove of burning diesel oil or fluidized bed furnace；Described fluidized bed furnace, adopts exhaust gas recirculation to use device, and fuel combustion waste gas and desiccation machine dewatered sludge waste gas by 80～85% introduce in fluidized bed furnace and uses.
10. the biological sludge commercial treatment system according to claim 7,8 or 9, it is characterized in that: described rotary type sludge desiccation machine, it is different in that with the swinging desiccation machine being widely used in the industry such as cement, coal washing, the netted inner core of stainless steel sift it is provided with in revolving drum, mesh-like inner core is provided with secondary lifting blade, and mesh-like inner core rear portion is provided with semi-oriented mud reducing mechanism.
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Effective date of registration: 20190725 Address after: 621100 Luxi industrial concentration area, three counties, Mianyang, Sichuan Patentee after: Sichuan Taiao Agricultural Technology Co., Ltd. Address before: 450004 No. 27, Shangcheng East Road, Guancheng Hui District, Zhengzhou City, Henan Province Patentee before: Liu Jianguo |