CN107746168A - A kind of sludge low cost harmless treatment device - Google Patents

A kind of sludge low cost harmless treatment device Download PDF

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Publication number
CN107746168A
CN107746168A CN201711196207.0A CN201711196207A CN107746168A CN 107746168 A CN107746168 A CN 107746168A CN 201711196207 A CN201711196207 A CN 201711196207A CN 107746168 A CN107746168 A CN 107746168A
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CN
China
Prior art keywords
section
pyrolysis
sludge
gasification
serrated knife
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Granted
Application number
CN201711196207.0A
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Chinese (zh)
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CN107746168B (en
Inventor
李志鹏
石玉
温继瀚
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SHENGHUO TECHNOLOGY (HENAN) Co Ltd
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SHENGHUO TECHNOLOGY (HENAN) Co Ltd
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Priority to CN201711196207.0A priority Critical patent/CN107746168B/en
Publication of CN107746168A publication Critical patent/CN107746168A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/10Treatment of sludge; Devices therefor by pyrolysis
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10JPRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46Gasification of granular or pulverulent flues in suspension
    • C10J3/48Apparatus; Plants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B11/00Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/005Control arrangements
    • B30B11/006Control arrangements for roller presses
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B15/00Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30Feeding material to presses
    • B30B15/302Feeding material in particulate or plastic state to moulding presses
    • B30B15/308Feeding material in particulate or plastic state to moulding presses in a continuous manner, e.g. for roller presses, screw extrusion presses
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/40Valorisation of by-products of wastewater, sewage or sludge processing

Abstract

The invention belongs to fixed-end forces field, and in particular to a kind of sludge low cost harmless treatment device;Including mud granulizing workshop section and sludge pyrolysis gas chemical industry section;Described mud granulizing workshop section from top to bottom includes roll squeezer, serrated knife granulating machine and stirring type dryer successively;Described sludge pyrolysis gas chemical industry section, including body of heater, described body of heater is jacket type structure, cooling water is full of in chuck, described body of heater is divided into pyrolysis section and gasification section, described pyrolysis section and the intersection of gasification section are provided with a material collecting tank, and revolving plow reclaimer is provided with the bottom of described material collecting tank;The present invention innovatively uses the pyrolytic gasification PROCESS FOR TREATMENT sludge of freeze-drying+multiple field, and the organic matter containing C in last sludge is converted into smoke comprehensive utilization, and heavy metal is from the discharge of the bottom of pyrolytic gasification section, as comprehensive utilization of resources;Whole device is simple in construction, easy to operate, is easy to utilization and extention.

Description

A kind of sludge low cost harmless treatment device
Technical field
The invention belongs to fixed-end forces field, and in particular to a kind of sludge low cost harmless treatment device.
Background technology
With Chinese society economy and the development of urbanization, the generation of municipal sewage and quantity are constantly increasing.According to having Prediction is closed, China's municipal sewage amount can also increase by a fairly big margin for 20 years in future.At present, China produces the nearly 3 × 106t of dewatered sludge per year, with The development of domestic sewage disposal cause, the total process water yield of sewage treatment plant and the continuous expansion and raising of degree for the treatment of, institute Caused sludge quantity also will increasingly increase.Substantial amounts of sludge fails to obtain timely, rational processing and sink as sewage treatment plant The burden of weight.Also contain substantial amounts of N, P, K, Ca and organic matter in sludge, and N, P can slowly be discharged based on organic, tool There is long-term effect.Sludge is useful living resources, if rationally utilizing can not only then turn waste into wealth, moreover it is possible to increase economic benefit, So effectively processing is disposed and had important practical significance using the technology of sludge.
Treatment of Sludge method is desiccation and then filled again at this stage, but with the development of modern city, is gone special It is unrealistic to be filled to take out a piece of vacant lot, and directly landfill can not also realize the recycling to resource in addition.Also A kind of method is exactly to carry out desiccation, pyrolysis, gasification to sludge, realizes the recycling of resource, but in the prior art, it is main Will be using heating power desiccation, it needs independent thermal source to carry out the drying and other treatment of sludge, and operating cost is higher, initial cost cost Also it is higher.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention provides a kind of sludge low cost harmless treatment device.
The technical solution adopted by the present invention is as follows:
A kind of sludge low cost harmless treatment device, including mud granulizing workshop section and sludge pyrolysis gas chemical industry section;
Described mud granulizing workshop section from top to bottom includes roll squeezer, serrated knife granulating machine and stirring type dryer successively;
The feeding of roll squeezer mouth sets loading hopper, and the roll squeezer is included to rotating drum, described that rotating drum is discharged Mouth sets the material scraping plate being adjacent to rotating drum surface;
The serrated knife granulating machine inlet docks the discharging opening of the roll squeezer, and the serrated knife granulating machine is included to revolving tooth Knife, described pair of rotation serrated knife surface set groove along direction of rotation, and the serrated knife granulating machine discharging opening, which is set, to be close to revolving serrated knife table The clear frid in face;
The main shaft of roll squeezer and the serrated knife granulating machine is hollow shaft, and the hollow shaft sets approach section and discharge section, institute State approach section and row's air outlet section is separated by cut-off or real core, the cut-off or real core both ends are set into hole and portalled respectively;Institute The inside for stating roll squeezer and serrated knife granulating machine sets cavity, and the cavity is connected with entering hole and portalling respectively;
The serrated knife granulating machine and the roll squeezer are by the way that together with cage connection, air intake is set in serrated knife granulating machine bottom Mouthful, exhaust outlet is set at the top of roll squeezer, and the exhaust outlet sets air exhauster;
If the stirring type dryer is divided into dried layer by multiple dividing plates, the dividing plate be divided into cylindrical opening large baffle and The small baffle of inner circle opening, the diaphragm internal set cavity, and the dividing plate top sets scraper plate, and the scraper plate is by presetting not Same angle transports the material of dividing plate to different positions in same direction of rotation;The charging aperture of the stirring type dryer and Discharge gate is respectively provided with sealing conveyer;Material is delivered to sludge pyrolysis gas chemical industry section by the sealing conveyer;
Described sludge pyrolysis gas chemical industry section, including body of heater, described body of heater are jacket type structure, full of cold in chuck But water, described body of heater are divided into pyrolysis section and gasification section, and the intersection of described pyrolysis section and gasification section is provided with a material collecting tank, Revolving plow reclaimer is installed in the bottom of described material collecting tank;
The gasification section is located at the bottom of body of heater, offered in the side wall of the gasification section quartz sand import, hot wind inlet, Vapor import and solid material extraction mouth;It is further opened with starting burner in the side wall of described gasification section;
Described pyrolysis section is located at the top of body of heater, and motor, described drive are provided with the top of described pyrolysis section The bottom of dynamic motor is provided with agitating shaft, the length of described agitating shaft and highly consistent, the described stirring axle position of pyrolysis section In the center of pyrolysis section, described agitating shaft is connected with multilayer scraper plate by connecting rod;The side wall of described body of heater is handed over up and down For being disposed with multiple big disks of large cylindrical opening and the roundel of inner circle opening below the scraper plate, described pyrolysis section Top side offers charging aperture, and the charging aperture is nearby provided with hopper, and the discharging opening and feed auger of described hopper are defeated Machine is sent to be connected, the conveying mouth of described feeding spiral conveyer is stretched into pyrolysis section through the charging aperture of pyrolysis section, will be dried Mud granule be delivered to the top big disk surface;
Air cooling equipment is connected with described motor, the air intake of described air cooling equipment is connected with cold wind, described air-cooled The outlet air end of device is connected by pipeline with the cold end of preheater;
Offer a side take-off mouth at the top of the gasification section, described side take-off mouth is by high temperature cigarette caused by gasification section Gas extraction is divided into two branch roads, and one of branch road is connected by pipeline with the gas approach of pyrolysis section, described gas approach It is connected with the internal cavities of big disk and roundel, other in which branch road is connected by pipeline with the hot junction of preheater;
Described preheater is dividing wall type heat exchanger, goes to the workshop section follow-up as thermal source supply to make after the flue gas heat exchange in hot junction With described cold end is changed into hot blast after exchanging heat, hot blast enters the hot wind inlet of gasification section by pipeline.
Further, above-mentioned sludge low cost harmless treatment device, the cold end of described preheater are also associated with a branch road, The branch road is connected by pipeline with air-cooler.
Further, above-mentioned sludge low cost harmless treatment device, the big disk of described pyrolysis section and the disk of roundel Temperature element is installed on face, to detect the temperature of big disk and roundel, in the operating condition, big disk and roundlet dish cart The temperature control in face is at 400-600 DEG C.
Further, above-mentioned sludge low cost harmless treatment device, cooling water in described chuck is from the bottom of chuck Into, discharged from the top of chuck, after heating and gasifying in drum, the water steaming by vapor pipeline through gasification section Gas import enters gasification section, and multiple nozzles, and the spray are offered on the pipeline that described vapor pipeline is located in gasification section Mouth goes out mouth down arrangement.
Further, above-mentioned sludge low cost harmless treatment device, the temperature control of described pyrolysis section is in 400-600 DEG C, the temperature control of the gasification section is at 800-1000 DEG C.
Further, the inside of above-mentioned sludge low cost harmless treatment device, described big disk and roundel is cavity Structure, cavity is interior to be full of superheated steam or conduction oil.
Further, above-mentioned sludge low cost harmless treatment device, described pyrolysis section top offer pyrolysis gas outlet Mouthful, the hot wind inlet that pyrolysis gas is delivered to gasification section by the gas pipeline that is connected with gas outlet by pyrolysis gas is used as gasification section Fuel.
Further, above-mentioned sludge low cost harmless treatment device, the series of the roll squeezer is the nature no more than 10 Number, the spacing to rotating drum of the multistage roll squeezer are sequentially reduced;The series of the serrated knife forming machine is oneself no more than 10 So number, the spacing to rotation serrated knife of the multistage serrated knife granulating machine are sequentially reduced.
Compared with prior art, the present invention is innovatively dirty using the pyrolytic gasification PROCESS FOR TREATMENT of freeze-drying+multiple field Mud, the organic matter containing C in last sludge are converted into smoke comprehensive utilization, and heavy metal is discharged from the bottom of pyrolytic gasification section, as Comprehensive utilization of resources.Whole device is simple in construction, easy to operate, is easy to utilization and extention.
The present invention is using freezing granulating technique, using the three phase point of water-ice-gas, controls in roller machine temperature at 0.01 DEG C, Stress control reaches the three phase point that ice is considered to be worth doing in mud granule, made in the case where not destroying mud granule form in 610.75Pa Ice bits distillation;
The pyrolysis section of multiple field of the present invention has the following advantages that:1. the residence time is easily controllable;It with tradition Pyrolysis oven compare, be not to decline completely by material block gravity itself, by the rotating speed for controlling agitating shaft, in that context it may be convenient to adjust Residence time of the mud granule (such as mud granule) in pyrolysis section.2. operating flexibility is larger, operation requires to be pyrolyzed than fluidizing type Stove is simply, conveniently.3. heat-transfer effect is good.The heat transfer area provided in same units volume is bigger than rotary kiln type pyrolysis oven, and Multiple field pyrolysis section category static equipment, rotary kiln and the dynamic equipment of fluidizing type pyrolysis oven category, manufacture, safeguard complexity.4. can hierarchical control Temperature, temperature element can be installed on big disk and roundel, according to the temperature of mud granule on disk 10, regulation in real time enters Crack the flow velocity of section flue gas.The production capacity of pyrolysis gasifying device of the present invention is 1.5 times of rotary kiln pyrogenation stove, identical The heat exchange area that can be provided in volume is l-3 times of rotary kiln pyrogenation stove, and material rotation is in rotary kiln pyrogenation stove What the rotation by whole cylinder drove, and the mud granule (such as mud granule) of pyrolyzing sludge gasification installation of the present invention 10 rotation is driven by agitating shaft, so saves electric energy, reduces operating cost.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the main structure diagram of the present invention;
Fig. 2 is the present invention looks up structural representation of roll squeezer of the present invention;
Fig. 3 is the A-A cross-sectional views of roll squeezer of the present invention;
Fig. 4 is the present invention looks up structural representation of serrated knife forming machine of the present invention;
Fig. 5 is the B-B cross-sectional views of serrated knife forming machine of the present invention;
Fig. 6 is the main structure diagram of stirring type dryer of the present invention;
Fig. 7 is the C-C cross-sectional views of stirring type dryer of the present invention;
Fig. 8 is the D-D cross-sectional views of stirring type dryer of the present invention;
A kind of Fig. 9 structural representations of flammable solid pyrolysis of waste gasification installation of the present invention;
Glide path figure of Figure 10 flammable solid discarded objects 10 of the present invention in pyrolysis section.
Embodiment
A kind of sludge low cost harmless treatment device, including mud granulizing workshop section and sludge pyrolysis gas chemical industry section;
Described mud granulizing workshop section as shown in figure 1, from top to bottom include roll squeezer 2, serrated knife granulating machine 3 and stirring successively Formula drying machine 4;
As shown in Figures 2 and 3, the charging aperture of roll squeezer 2 sets loading hopper 22, and the roll squeezer 2 is included to rotating drum 25, the spacing to rotating drum 25 can adjust, and the device of the spacing adjustment includes the silk for being separately positioned on roller both ends Thick stick, cylinder or/and oil cylinder;Pass through the adjustment of spacing so that the thickness of sludge cake is in appropriate scope, in order to next step Slitting;Described to set the material scraping plate 26 being adjacent to the surface of rotating drum 25 to the discharging opening of rotating drum 25, material scraping plate 26 can prevent dirt Mud cake is bonded in cylinder surface due to stickiness so that the ratio of briquetting and speed of production of sludge cake reduce;
As shown in Figures 4 and 5, the charging aperture of serrated knife granulating machine 3 docks the discharging opening of the roll squeezer 2, the serrated knife into Grain machine 3 is included to revolving serrated knife 34, and the described pair of surface of rotation serrated knife 34 sets groove, the spacing of described pair of rotation serrated knife 34 along direction of rotation It can adjust, the device of the spacing adjustment includes the leading screw, cylinder or/and oil cylinder for being separately positioned on roller both ends;By Away from adjustment so that the shape of sludge bar is in suitable scope so that is more easy to fragment into smaller particle.The serrated knife granulating The discharging opening of machine 3 sets the clear frid 35 being close to rotation serrated knife 34 surface, the notch geometry of clear frid 35 and the groove to revolving serrated knife 34 The shape of bottom and groove face is coincide, and clear frid 35 removes the mud granule being bonded in the rotation bottom land of serrated knife 34 and groove face, increase in time The operational efficiency of equipment;
The roll squeezer 2 is hollow to rotation serrated knife main shaft 36 to rotating drum main shaft 27 and the serrated knife granulating machine 3 Axle, the hollow shaft set air inlet section and exhaust section, roll squeezer are connected respectively to the air inlet section and exhaust section of rotating drum main shaft 27 Refrigerant exit 21 and roll squeezer refrigerant inlet 24, the air inlet section of described pair of rotation serrated knife main shaft 36 connected respectively with exhaust section serrated knife into Grain machine refrigerant import 31 and serrated knife granulating machine refrigerant exit 32;
The air inlet section and exhaust section are separated by cut-off or real core, the cut-off or real core both ends be set into respectively hole and Portal;The inside of the roll squeezer 2 and serrated knife granulating machine 3 sets cavity, and the cavity is connected with entering hole and portalling respectively;It is described Refrigerant 5 enters hole into the roll squeezer 2 and the internal cavities of serrated knife granulating machine 3 by air inlet section, reduces in equipment and equipment Sludge temperature, freeze it, by portalling and the specified location outside exhaust section device for transferring, the refrigerant is external equipment The cryogen of offer;The roll squeezer 2 and serrated knife granulating machine 3 constantly accelerate dirt during sludge is handled, by freezing The rolling of mud is freezed so that the better protrusion of final granulating;
Together with the serrated knife granulating machine 3 and the external connection of roll squeezer 2, by being arranged on serrated knife in the operation of rolling The air inlet of air inlet 33 of the bottom of granulating machine 3, it is vented by the air exhauster 6 for being arranged on the top exhaust outlet 23 of roll squeezer 2;
As shown in Fig. 6,7 and 8, the stirring type dryer 4 is up and down with end cap cylinder, upper end cover setting drying machine Charging aperture 46 and moisture exhausting port 47, bottom end cover set drying machine discharge gate 45, drying machine Heating medium 41 and the outlet of drying machine heating agent 42;If the dryer inner is divided into dried layer by multiple dividing plates, the dividing plate is divided into the large baffle 49b and inner circle of cylindrical opening The small baffle 49a of opening, the diaphragm internal set heating chamber, the heating chamber by pipeline respectively with drying machine Heating medium 41 and the connection of drying machine heating agent outlet 42, by heated barrier, indirectly heat mud granule, make to form HTHP in drying machine Environment so that moisture in mud granule or ice bits vaporization distillation, reach the purpose of dry mud granule;The moisture exhausting port 47 High-temperature steam is externally discharged by valve not timing, while ensureing internal environment, excludes the steam in sludge;The heating agent bag The high temperature fluid provided by external equipment is provided;
The dividing plate top sets scraper plate, and the scraper plate presets different angles, drying machine main shaft is fixed on by skeleton On, the drying machine main shaft at same direction of rotation, by forward direction arrangement positive scraper plate 48a or reversed arrangement it is reverse Scraper plate 48b transports the material of dividing plate to different positions, falls the septulum of the large baffle 49b or inner circle opening in the cylindrical opening of lower floor Plate 49a, until dropping out drying machine discharge gate 45;The main shaft bottom sets power set 43 and reductor 44, is rotated for main shaft Power is provided, the power set 43 include motor and fuel oil or gas engine, and the reductor 44 subtracts including bevel gear Fast machine, parallel gears reductor and planet-gear speed reducer;
The charging aperture 46 and discharge gate 45 of the stirring type dryer are respectively provided with sealing conveyer, the sealed conveying Machine includes sealed Shaftless screw conveyor, and the helical blade of the sealed Shaftless screw conveyor sets dividing plate, makes sealing The O-shaped shell of formula Shaftless screw conveyor and multiple sealing cavities are formed with dividing plate helical blade, ensureing material in work While conveying, the sealing of equipment is kept;
The roll squeezer 2 and serrated knife granulating machine 3 evaporate caused water vapour discharges from exhaust outlet 23, stirring type dryer 4 Water vapour caused by evaporation is discharged from the moisture exhausting port 47 being located on top cover, if any peculiar smell, what exhaust outlet 23 and moisture exhausting port 47 were discharged Gas empties after can be collected into spray column processing deodorization;
The mud granule 10 of mud granulizing workshop section is delivered to sludge pyrolysis gas chemical industry section by the sealing conveyer;
Described sludge pyrolysis gas chemical industry section, as shown in figure 9, including body of heater 7, described body of heater 7 is jacket type structure, It is full of cooling water in chuck, described body of heater 7 divides for pyrolysis section and gasification section, and the intersection of described pyrolysis section and gasification section is set A material collecting tank 714 is equipped with, revolving plow reclaimer 715 is installed in the bottom of described material collecting tank 714;
The gasification section is located at the bottom of body of heater 7, and quartz sand import 711, hot blast are offered in the side wall of the gasification section Import 713, vapor import 712 and solid material extraction mouth 708;It is further opened with starting burning in the side wall of described gasification section Device 709;
Described pyrolysis section is located at the top of body of heater 7, and motor 706 is provided with the top of described pyrolysis section, described The bottom of motor 706 agitating shaft 701, the length of described agitating shaft 301 and highly consistent, the institute of pyrolysis section are installed The agitating shaft 701 stated is located at the center of pyrolysis section, and described agitating shaft 701 is connected with multilayer scraper plate by connecting rod 702 7021;The side wall of described body of heater 3 is disposed with the big disk of multiple large cylindrical openings positioned at the lower section of scraper plate 7021 alternatively up and down 703 and the roundel 704 of inner circle opening, the top side of described pyrolysis section offers charging aperture, and the charging aperture is nearby pacified Equipped with hopper 8, the discharging opening of described hopper 8 is connected with feeding spiral conveyer 9, described feeding spiral conveyer 9 it is defeated Material mouth is stretched into pyrolysis section through the charging aperture of pyrolysis section, and dried mud granule 10 is delivered to the big disk of the top 703 surface;
Air cooling equipment is connected with described motor 706, the air intake of described air cooling equipment is connected with cold wind, the wind The outlet air end of device for cooling is connected by pipeline with the cold end of preheater 707;
Offer a side take-off mouth at the top of the gasification section, described side take-off mouth is by high temperature cigarette caused by gasification section Gas extraction is divided into two branch roads, and one of branch road is connected by pipeline with the gas approach 705 of pyrolysis section, and described flue gas enters Mouth 705 is connected with the internal cavities of big disk 703 and roundel 704, and other in which branch road passes through pipeline and preheater 707 Hot junction is connected;
Described preheater 707 is dividing wall type heat exchanger, goes to supply follow-up work as thermal source after the flue gas heat exchange in hot junction Section uses, and is changed into hot blast after the heat exchange of described cold end, and hot blast enters the hot wind inlet of gasification section by pipeline.
Further, above-mentioned sludge low cost harmless treatment device, the cold end of described preheater 707 are also associated with one Road, the branch road are connected by pipeline with air-cooler.
Further, above-mentioned sludge low cost harmless treatment device, the big disk 703 and roundel of described pyrolysis section Temperature element is installed in 704 card, to detect the temperature of big disk 703 and roundel 704, in the operating condition, greatly The temperature control on disk 703 and the surface of roundel 704 is at 400-600 DEG C.
Further, above-mentioned sludge low cost harmless treatment device, cooling water in described chuck is from the bottom of chuck Into after entering drum gasification at the top of chuck, the vapor import for passing through gasification section by vapor pipeline enters gasification Section, offer multiple nozzles, and the lower arrangement of direction of the nozzle on the pipeline that described vapor pipeline is located in gasification section. It is located in vapor pipeline on the pipeline of gasification section and opens up multiple nozzles, and the effect that nozzle is arranged down is that vapor is whole Individual gasification section functions as reaction raw materials, is reacted with the organic matter in sludge and the hot blast for entering gasification section, by sludge In organic compound combustion gasification, be finally translated into ash content, vapor, which is uniformly distributed, contributes to combustion even, thoroughly.
Further, above-mentioned sludge low cost harmless treatment device, described pyrolysis section top offer pyrolysis gas outlet Mouthful, the hot wind inlet that pyrolysis gas is delivered to gasification section by the gas pipeline that is connected with gas outlet by pyrolysis gas is used as gasification section Fuel.Because the calorific value of pyrolysis gas caused by pyrolysis section is high, the fuel by the pyrolysis gas of pyrolysis section directly as gasification section, save The energy.
Further, air distribution plate is installed above the air inlet of the hot blast of described gasification section, pacified on described air distribution plate Equipped with blast cap, reacting field of the air distribution plate as vapor, hot blast (offer oxygen) and sludge (containing organic matter containing C in sludge) Institute, the side of air distribution plate are provided with slag-drip opening 708, and reacted ash content and quartz sand are discharged, follow-up workshop section by ash content and Quartzy sand separation, quartz sand recycling, quartz sand is not involved in reacting herein, and main function is as thermal conducting agent.
Further, above-mentioned sludge low cost harmless treatment device, the temperature control of described pyrolysis section is in 400-600 DEG C, the temperature control of the gasification section is at 800-1000 DEG C.
Further, the inside of above-mentioned sludge low cost harmless treatment device, described big disk 703 and roundel 704 For cavity structure, cavity is interior to be full of superheated steam or conduction oil.
Further, above-mentioned sludge low cost harmless treatment device, described pyrolysis section top offer pyrolysis gas outlet Mouthful, the hot wind inlet that pyrolysis gas is delivered to gasification section by the gas pipeline that is connected with gas outlet by pyrolysis gas is used as gasification section Fuel.
Further, above-mentioned sludge low cost harmless treatment device, the series of the roll squeezer 2 is the nature no more than 10 Number, the spacing to rotating drum 25 of the multistage roll squeezer 2 are sequentially reduced;The series of the serrated knife forming machine 3 is no more than 10 Natural number, the multistage serrated knife granulating machine 3 to revolve serrated knife 34 spacing be sequentially reduced.
The operation principle of sludge freezing prilling section of the present invention:Simple air-dry will be passed through by feeder 1 first Transport that (operating parameter in roll squeezer 2 is temperature control at 0.01 DEG C, Stress control to roll squeezer 2 with the sludge of precipitation process In 610.75Pa) loading hopper 22;Then, loading hopper 22 will freeze into roll squeezer 2 after material collection and be rolled into thin mud Cake;Again, serrated knife granulating machine 3 cuts into inch strips thin mud cake, and freezing further reduces its moisture, and strip sludge is made by gravity The particle of not regular length is formed with fragmentation;Meanwhile cold air is sucked by air exhauster 6 and air inlet 33 so that after freezing Moist part distillation in sludge;Finally, the mud granule after freezing enters the stirring type dryer 4 closed and passes through heating for multiple times With stir, by the moisture of mud granule by distilling or vaporizing, decrease below 35%, pyrolytic gasification transported to by discharging machine 5 Workshop section.
In roll squeezer 2, for temperature control at 0.01 DEG C, Stress control reaches what ice in mud granule was considered to be worth doing in 610.75Pa Three phase point, ice bits distillation is made in the case where not destroying mud granule form, while decrease the generation of peculiar smell.
Contain substantial amounts of heavy metal and various types of organic matters in sludge, if sludge directly inclines after simple sterilizing In ground end or the lowest point, small investment is quick, capacity is big, but buries the defects of embankment formula can not make up there is also itself, and one Aspect, which buries to fill out, itself can not finally eliminate pollution, and simply delay caused by pollution the time, and containing in sludge largely has Machine thing, germ and heavy metal, heavy metal belong to metal values resource, pyrolyzing sludge gasification installation provided by the invention, adopted Sludge is thoroughly burnt with the mode of pyrolysis, gasification, the pollution of sludge is reduced from root, and heavy metal is collected, is entered Follow-up recovery.
The operation principle of sludge pyrolysis gas chemical industry section provided by the invention is:As shown in Figure 10, dried mud granule By being collected in hopper 8, mud granule enters the pyrolysis section of pyrolysis gasification furnace by feeding spiral conveyer 9 in hopper 8 On the big disk 703 of the top, motor driving agitating shaft 701 rotates, and agitating shaft 701 drives scraper plate 7021 to rotate, (scraper plate Effect in 7021 steering and roundel 704 on big disk 703 is on the contrary, its cloth angle setting by adjusting the blade of scraper plate 7021 Degree can be achieved, identical with Fig. 7 and Fig. 8 operation principles) promote mud granule 10 to be moved to the center of big disk 703, big disk 703 for hollow disc structure, mud granule 10 fall from the hollow round hole of big disk 703, fall into positioned at the small of its lower end On disk 704, mud granule 10 moves to the direction away from roundel 704 under the influence of centrifugal force, reaches roundel 704 Edge, mud granule 10 are fallen from roundel 704, are fallen on the big disk 703 of the lower section of roundel 704, mud granule 10 fall from top to bottom during by big disk 703 and roundel 704 effect, operation of the mud granule 10 in cracking zone Track is elongated, increases the pyrolysis time of mud granule 10, makes the cracking of mud granule more thorough.Mud granule 10 is cracking The thermal source in area comes from high-temperature gasification combustible gas caused by gasification zone, and combustible gas caused by gasification zone has a variety of effects:1) from gas Change area and be transported to pyrolysis zone, the thermal source as pyrolysis zone uses;2) heat of the side take-off branch road of flue gas also as preheater 707 Source, to heat cold wind, so it is changed into hot blast into the cold wind of gasification section, hot blast enters gasification section, than directly entering using cold wind Enter that the heat loss of gasification section is few, because the temperature difference of hot blast and gasification section is small, the temperature difference of cold wind and gasification section is big, if directly used Cold wind enters gasification section, and entropy loss when cold wind meets with gas in gasification section is big, enters gasification section, hot blast and gas using hot blast The entropy loss changed when gas meets in section is big;Still further aspect directly enters gasification section using hot blast, temperature change in gasification section Amplitude is smaller, control gasification section easy to operation.
The advantages of device of sludge pyrolysis gas chemical industry section of the present invention has fixed bed and moving bed concurrently:
The pyrolysis section of multiple field has the following advantages that:1. the residence time is easily controllable;It is compared with traditional pyrolysis oven, no It is that by material block, gravity itself declines completely, by the rotating speed for controlling agitating shaft, in that context it may be convenient to conditioning of mud particle (such as it is dirty Mud particle) in the residence time of pyrolysis section.2. operating flexibility is larger, operation requires simpler than fluidizing type pyrolysis oven, conveniently.3. pass Thermal effect is good.The heat transfer area provided in same units volume is bigger than rotary kiln type pyrolysis oven, and multiple field pyrolysis section belongs to quiet Equipment, rotary kiln and the dynamic equipment of fluidizing type pyrolysis oven category, manufacture, safeguard complexity.4. can hierarchical control temperature, can in big disk and Temperature element is installed, according to the temperature of mud granule on disk 10, regulation in real time enters the flow velocity of cracking section flue gas on roundel. The production capacity of pyrolysis gasifying device of the present invention is 1.5 times of rotary kiln pyrogenation stove, be can be provided in same volume Heat exchange area is l-3 times of rotary kiln pyrogenation stove, and it is the rotation for leaning on whole cylinder that material, which rotates, in rotary kiln pyrogenation stove Drive, and the rotation of the mud granule (such as mud granule) 10 of pyrolyzing sludge gasification installation of the present invention is by stirring Axle drives, and so saves electric energy, reduces operating cost.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using the present invention. Person skilled in the art obviously can easily make various modifications to these embodiments, and described herein general Principle is applied in other embodiment without by performing creative labour.Therefore, the invention is not restricted to embodiment here, sheet Art personnel do not depart from improvement that scope made and modification all should be in the present invention according to the announcement of the present invention Protection domain within.

Claims (8)

1. a kind of sludge low cost harmless treatment device, it is characterised in that gasify including mud granulizing workshop section and pyrolyzing sludge Workshop section;
Described mud granulizing workshop section from top to bottom includes roll squeezer (2), serrated knife granulating machine (3) and stirring type dryer successively (4);
Roll squeezer (2) charging aperture sets loading hopper (22), and the roll squeezer (2) is included to rotating drum (25), described right Rotating drum (25) discharging opening sets the material scraping plate (26) being adjacent to rotating drum (25) surface;
Serrated knife granulating machine (3) charging aperture docks the discharging opening of the roll squeezer (2), and the serrated knife granulating machine (3) includes pair Serrated knife (34) is revolved, described pair of rotation serrated knife (34) surface sets groove along direction of rotation, and serrated knife granulating machine (3) discharging opening is set It is close to the clear frid (35) to revolving serrated knife (34) surface;
The main shaft of the roll squeezer (2) and serrated knife granulating machine (3) is hollow shaft, and the hollow shaft sets approach section and discharge section, The approach section and row's air outlet section are separated by cut-off or real core, and the cut-off or real core both ends are set into hole and portalled respectively; The inside of the roll squeezer (2) and serrated knife granulating machine (3) sets cavity, and the cavity is connected with entering hole and portalling respectively;
The serrated knife granulating machine (3) and the roll squeezer (2) together, are set by cage connection in serrated knife granulating machine (3) bottom Air inlet (33) is put, exhaust outlet (23) is set at the top of roll squeezer (2), the exhaust outlet sets air exhauster (6);
For the stirring type dryer (4) if being divided into dried layer by multiple dividing plates, the dividing plate is divided into the large baffle of cylindrical opening (49b) and the small baffle of inner circle opening (49a), the diaphragm internal set cavity, and the dividing plate top sets scraper plate, described to scrape Plate transports the material of dividing plate to different positions by presetting different angles in same direction of rotation;The stirring-type is dried The charging aperture and discharge gate of machine are respectively provided with sealing conveyer;Material is delivered to pyrolyzing sludge gasification by the sealing conveyer Workshop section;
Described sludge pyrolysis gas chemical industry section, including body of heater (7), described body of heater (7) are jacket type structure, are full of in chuck Cooling water, described body of heater (7) are divided into pyrolysis section and gasification section, and the intersection of described pyrolysis section and gasification section is provided with a collection Hopper (714), revolving plow reclaimer (715) is installed in the bottom of described material collecting tank (714);
The gasification section is located at the bottom of body of heater (7), and quartz sand import (711), hot blast are offered in the side wall of the gasification section Import (713), vapor import (712) and solid material extraction mouth (708);It is further opened with opening in the side wall of described gasification section Dynamic burner (709);
Described pyrolysis section is located at the top of body of heater (7), and motor (706) is provided with the top of described pyrolysis section, described The bottom of motor (706) agitating shaft (701), the length of described agitating shaft (301) and the height of pyrolysis section are installed Unanimously, described agitating shaft (701) is located at the center of pyrolysis section, and described agitating shaft (701) is connected by connecting rod (702) There is multilayer scraper plate (7021);The side wall of described body of heater (3) is disposed with multiple big below scraper plate (7021) alternatively up and down The big disk (703) of cylindrical opening and the roundel (704) of inner circle opening, the top side of described pyrolysis section offer charging Mouthful, the charging aperture is nearby provided with hopper (8), and the discharging opening of described hopper (8) is connected with feeding spiral conveyer (9), The conveying mouth of described feeding spiral conveyer (9) is stretched into pyrolysis section through the charging aperture of pyrolysis section, by dried sludge Particle (10) is delivered to the surface of the big disk (703) of the top;
Air cooling equipment is connected with described motor (706), the air intake of described air cooling equipment is connected with cold wind, described air-cooled The outlet air end of device is connected by pipeline with the cold end of preheater (707);
A side take-off mouth is offered at the top of the gasification section, described side take-off mouth adopts high-temperature flue gas caused by gasification section Go out to be divided into two branch roads, one of branch road is connected by pipeline with the gas approach (705) of pyrolysis section, described gas approach (705) internal cavities with big disk (703) and roundel (704) are connected, and other in which branch road passes through pipeline and preheater (707) hot junction is connected;
Described preheater (707) is dividing wall type heat exchanger, goes to supply follow-up workshop section as thermal source after the flue gas heat exchange in hot junction Use, be changed into hot blast after the heat exchange of described cold end, hot blast enters the hot wind inlet of gasification section by pipeline.
2. sludge low cost harmless treatment device according to claim 1, it is characterised in that described preheater (707) cold end is also associated with a branch road, and the branch road is connected by pipeline with air-cooler.
3. sludge low cost harmless treatment device according to claim 1, it is characterised in that described pyrolysis section it is big Temperature element is installed in the card of disk (703) and roundel (704), to detect big disk (703) and roundel (704) Temperature, in the operating condition, the temperature control on big disk (703) and roundel (704) surface is at 400-600 DEG C.
4. sludge low cost harmless treatment device according to claim 1, it is characterised in that cold in described chuck But water enters from the bottom of chuck, is discharged from the top of chuck, after heating and gasifying in drum, passes through vapor pipeline Vapor import through gasification section enters gasification section, is offered on the pipeline that described vapor pipeline is located in gasification section more Individual nozzle, and the mouth down that goes out of the nozzle is arranged.
5. sludge low cost harmless treatment device according to claim 1, it is characterised in that the temperature of described pyrolysis section Degree control is at 400-600 DEG C, and the temperature control of the gasification section is at 800-1000 DEG C.
6. pyrolyzing sludge gasification installation according to claim 1, it is characterised in that described big disk (703) and roundlet The inside of disk (704) is cavity structure, is full of superheated steam or conduction oil in cavity.
7. sludge low cost harmless treatment device according to claim 1, it is characterised in that at the top of described pyrolysis section Offer pyrolysis gas gas outlet, pyrolysis gas is delivered to the hot blast of gasification section by the gas pipeline that is connected with gas outlet by pyrolysis gas Fuel of the import as gasification section.
8. sludge low cost harmless treatment device as claimed in claim 1, it is characterised in that:The level of the roll squeezer (2) Number is the natural number no more than 10, and the spacing to rotating drum (25) of the multistage roll squeezer (2) is sequentially reduced;The serrated knife into The series of type machine (3) is the natural number no more than 10, and the spacing to rotation serrated knife (34) of the multistage serrated knife granulating machine (3) is successively Reduce.
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CN113880387A (en) * 2021-08-31 2022-01-04 宜兴市吉尼科技有限公司 Sludge low-temperature drying system based on cold ablation
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