CN214108261U

CN214108261U - Low-temperature anaerobic cracking treatment device for household garbage

Info

Publication number: CN214108261U
Application number: CN202022174776.9U
Authority: CN
Inventors: 陶旭庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-09-03
Anticipated expiration: 2030-09-28

Abstract

The utility model discloses a domestic waste low temperature anaerobic cracking treatment device relates to domestic waste treatment technical field. The domestic waste preprocessing device is connected with the feed inlet of the drying device through the first screw extrusion feeding machine, the discharge outlet of the drying device is connected with the domestic waste feed inlet of the cracking reaction device through the second screw extrusion feeding machine, the domestic waste discharge outlet of the cracking reaction device is connected with the domestic waste cooling device, the waste gas treatment device is connected with the waste gas discharge outlet of the domestic waste preprocessing device, and the cracking gas outlet of the cracking reaction device is connected with the cracking gas treatment device. The domestic garbage is pretreated by the domestic garbage pretreatment device, then the dried domestic garbage is cracked by the cracking reaction device, finally, cracked gas generated by the cracking reaction device enters the cracked gas treatment device for collection and treatment, so that the domestic garbage is cracked and gasified, gas is obtained, and the resource utilization of the domestic garbage is realized.

Description

Low-temperature anaerobic cracking treatment device for household garbage

Technical Field

The utility model relates to a domestic waste handles technical field, concretely relates to domestic waste low temperature anaerobic cracking device.

Background

The household garbage refers to solid waste generated in daily life or activities for providing services for daily life. The existing domestic garbage recycling and treating means is mainly incineration power generation, however, the water content of a lot of domestic garbage is very large, so that dry-wet separation is needed, the treatment before garbage incineration is very complicated, the energy utilization rate is low, and the economic benefit is poor.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a domestic waste low temperature anaerobic cracking treatment device to energy utilization is low problem when solving among the prior art domestic waste and burning.

In order to achieve the above object, the present invention provides the following technical solutions:

this domestic waste low temperature anaerobic cracking processing apparatus includes domestic waste preprocessing device, drying device, schizolysis reaction unit and schizolysis gas treatment device, domestic waste preprocessing device connects drying device's feed inlet through first screw extrusion batcher, drying device's discharge gate passes through the domestic waste feed inlet of second screw extrusion batcher connection schizolysis reaction unit, schizolysis reaction device's domestic waste discharge gate passes through heat transfer mechanism and connects charcoal collection device, heat transfer mechanism and drying device overlap each other and establish, schizolysis gas treatment device is connected to schizolysis gas outlet of schizolysis reaction device, domestic waste preprocessing device, first screw extrusion batcher, schizolysis gas treatment device's outlet connection has sewage treatment device.

Further, drying device for rotate the setting at the outer barrel of drying, be equipped with the outer barrel stock guide that promotes material axial displacement in the outer barrel of drying, heat exchange mechanism wears to establish the inboard at the outer barrel of drying.

Further, the heat exchange mechanism is a cooling inner cylinder arranged on the inner side of the drying outer cylinder, the cooling inner cylinder is fixedly connected with the drying outer cylinder, and an inner cylinder guide plate for pushing materials to move axially is arranged in the cooling inner cylinder.

Furthermore, the heat exchange mechanism is a cooling auger arranged on the inner side of the drying outer cylinder body.

Further, the heat exchange mechanism is connected with the carbon collecting device through a cooling mechanism.

Furthermore, the domestic garbage pretreatment device is arranged in a closed pretreatment workshop, and the pretreatment workshop is connected with the waste gas treatment device through an induced draft fan.

Furthermore, a concentrated solution outlet of the sewage treatment device is connected with a feed inlet of the cracking reaction device.

Furthermore, the cracking reaction device comprises a plurality of cracking reaction kettles, the barrel of each cracking reaction kettle is a concentric horizontal double-layer double-barrel hollow cylinder body consisting of two cylinders with different diameters, the outer barrel of each adjacent cracking reaction kettle is communicated with the outer barrel, the inner barrel is communicated with the inner barrel, the plurality of cracking reaction kettles are communicated with one another in series, the lowest cracking reaction kettle is connected with a heating device, a drying device is communicated with the inner barrel of the uppermost cracking reaction kettle through a spiral auger conveyor or a lifter and a second spiral extrusion feeder, two ends of the barrel of each cracking reaction kettle are sealed through end sockets, and corrugated metal expansion joints are arranged between the two adjacent cracking reaction kettles and between the barrel of each cracking reaction kettle and the end sockets.

The utility model has the advantages of as follows:

the utility model discloses utilize domestic waste preprocessing device to carry out the preliminary treatment to domestic waste, then the domestic waste after cracking reaction device to drying cracks, and the pyrolysis gas that cracking reaction device produced at last gets into the pyrolysis gas processing apparatus and collects the processing, has realized domestic waste schizolysis gasification, obtains the gas, realizes domestic waste's utilization of resources. The utility model discloses during utilizing heat transfer mechanism to send into drying device with pyrolysis treatment device exhaust high temperature charcoal, carry out drying process to domestic waste as the heat source, improved energy utilization and rate, and then improved domestic waste recovery's economic benefits.

Drawings

FIG. 1 is a schematic view of a low-temperature anaerobic cracking treatment device for domestic garbage according to embodiment 1 of the present invention;

fig. 2 is a schematic view of a drying device in embodiment 1 of the present invention;

FIG. 3 is a schematic view of a cleavage reaction apparatus in example 1;

FIG. 4 is a schematic view of the first cleavage reaction vessel of example 1;

FIG. 5 is a left side view of the first cleavage reaction vessel of example 1;

FIG. 6 is a schematic view of a second cleavage reaction vessel of example 1;

FIG. 7 is a schematic view of a third cleavage reaction vessel in example 1;

FIG. 8 is a schematic view of a fourth cleavage reaction vessel in example 1;

fig. 9 is a schematic view of a drying device in embodiment 2 of the present invention;

in the figure: 1-domestic garbage collection pool 2-first material grabbing machine 3-first-stage crusher 4-belt conveyor 5-pretreated metal magnetic separator 6-second-stage crusher 7-induced draft fan 8-spiral water squeezing machine 9-crusher rear garbage storage bin 10-second material grabbing machine 11-belt electronic scale 12-first spiral extruding feeder 13-drying device 14-heat exchange mechanism 15-second spiral extruding feeder 16-first cracking reaction kettle 17-second cracking reaction kettle 18-third cracking reaction kettle 19-fourth cracking reaction kettle 20-heating device 21-high temperature conveying auger 22-high temperature carbon box 23-high temperature carbon output auger 24-cooling mechanism 25-sorting device 26-three-phase separator 27-condenser 28 -gas-liquid separator 29-oil-water separator 30-waste gas treatment device 31-heavy oil storage tank 32-light oil storage tank 33-desulfurization dechlorination device 34-gas deodorization purification device 35-gas storage bag 36-gas generator 37-fine material 38-fine material storage warehouse 39-coarse material 40-coarse material metal magnetic separator 41-metal warehouse 42-slag warehouse 43-sewage collection pool 44-sewage pretreatment pool 45-active carbon adsorption purification pool 46-carbon filtration device 47-DTRO disc tube type treatment device 48-degassing tower 49-reverse osmosis device 50-purified water circulation device 51-concentrated solution 52-drying outer cylinder 53-cooling inner cylinder 54-outer cylinder guide plate 55-outer cylinder lifting plate 56-inner cylinder lifting plate 56-reverse osmosis device 50 The device comprises a material guide plate 57, a cooling auger 58, a cracking kettle outer cylinder 59, a cracking kettle inner cylinder 60, an outer insulating layer 61, a cracking kettle interlayer 62, a hollow shaft 63, a screw blade 64, a cracking gas outlet 65, an interlayer hot gas outlet 66, a cracking kettle feed inlet 67, a corrugated metal expansion joint 68, a sealing device 69, a bearing 70, a solid shaft head 71, a bearing seat 72, an end cover 73, an external heating hot gas inlet 74, an interlayer hot gas inlet 75, a cracking kettle discharge outlet 76, a material baffle 77, a combustion chamber 78, a burner nozzle 79 and an adjusting valve.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.

Example 1

Referring to fig. 1, the low-temperature anaerobic domestic garbage cracking treatment device comprises a domestic garbage pretreatment device, a drying device 13, a cracking reaction device, a cracking gas treatment device, a waste gas treatment device 30 and a high-temperature carbon discharge device, wherein the domestic garbage pretreatment device is connected with a feed inlet of the drying device 13 through a first screw extrusion feeder 12, a discharge outlet of the drying device 13 is connected with a second screw extrusion feeder 15 through a high-temperature conveying auger 21, the second screw extrusion feeder 15 is connected with a domestic garbage feed inlet of the cracking reaction device, a domestic garbage discharge outlet of the cracking reaction device is connected with a heat exchange mechanism 14 through a high-temperature carbon discharge device, the waste gas treatment device 30 is connected with a waste gas discharge outlet of the domestic garbage pretreatment device, a cracking gas outlet 64 of the cracking reaction device is connected with the cracking gas treatment device, the domestic garbage pretreatment device, the first screw extrusion feeder 12, the high-temperature carbon discharge device, The water outlet of the cracking gas treatment device is connected with a sewage treatment device.

The domestic garbage pretreatment device is arranged in a closed pretreatment workshop, and the pretreatment workshop is connected with the waste gas treatment device 30 through the induced draft fan 7. The whole pretreatment workshop of the domestic garbage pretreatment device is designed with a totally-enclosed negative pressure state, a plurality of air suction openings are arranged above the workshop, and a fan absorbs dust and waste gas generated in the pretreatment workshop through a pipeline and sends the dust and the waste gas to the waste gas treatment device 30 to be discharged after dust removal and purification through equipment. The dust and the waste gas generated in the pretreatment process are effectively controlled not to be discharged outwards, and the secondary emission pollution is reduced.

Domestic waste preprocessing device includes domestic waste collecting pit 1, first material machine 2, one-level breaker 3, band conveyer 4, preliminary treatment metal magnet separator 5, second grade breaker 6, spiral wringing machine 8, storehouse 9 is stored to rubbish behind the breaker, material machine 10 and belt electronic scale 11 are grabbed to the second, first material machine 2 setting of grabbing is between domestic waste collecting pit 1 and one-level breaker 3, band conveyer 4, preliminary treatment metal magnet separator 5, second grade breaker 6, storehouse 9 sets gradually is stored to rubbish behind spiral wringing machine 8 and the breaker, material machine 10 sets up behind the breaker between storehouse 9 and the belt electronic scale 11 is stored to rubbish behind the second.

Wherein: domestic waste collecting pit 1, use special transport vechicle to send the domestic waste collecting pit 1 of domestic waste preliminary treatment workshop after being collected by the domestic waste special person, domestic waste collecting pit 1 main function is used for the domestic waste to collect the back and concentrates and stack, and zero hour is stored, wait to handle.

First material machine 2 of grabbing is installed between domestic waste collecting pit 1 and one-level breaker 3, the device is driven by the motor, arm hydraulic transmission, according to the signal of material detection instrument transmission, grab belt conveyor 4 hoppers in the material according to the speed of setting for in the pond, send into the breaker feed inlet by belt conveyor 4 the material uniformly and carry out the breakage, the device degree of automation is high (need not personnel site operation, reduce the injury of pollutant to the human body), the flexible operation, high convenience and fast, can control.

A primary crusher 3, comprising: the device comprises a base, a machine body, a motor, a speed reducer, a bearing, a main shaft, a blade, a combing tool device, a feed hopper, a discharge port, a power distribution cabinet and the like. The one-level crusher 3 selects two motors with power of 90 KW-220 KW, and a cutter: the device adopts a full-import cutter, the primary crushing requirement specification is 200mm, the crushing yield is 20-30 tons/hour, the device adopts a staggered and opposite-rolling design of two groups of import cutters, two motors with the same power rotate in opposite directions with the same speed and the same frequency, a speed reducer is driven by the motors to drive two groups of blades to rotate in opposite directions, a feeding hopper is arranged above a crusher and is arranged above a feeding hole of the crusher, materials are shredded after entering the feeding hopper, and the shredded materials are discharged from a discharging hole below the crusher and enter a conveyer hopper.

The crusher back garbage storage bin 9 is arranged in a stacking place of the pretreatment workshop for stacking and storing the pretreated household garbage in addition, and the collected household garbage enters the pretreatment workshop to be directly stacked and wait for treatment when entering the household garbage storage bin for zero-time pretreatment such as crushing and crushing.

The second material grabbing machine 10 is arranged in the middle of one side edge of the rear garbage storage bin 9 of the crusher, is the same as the first material grabbing machine 2, and is mainly used for grabbing materials in the rear garbage storage bin 9 of the crusher into a hopper of the belt conveyor 4 and sending the materials into a belt electronic scale 11 for weighing.

The first screw extruder feeder 12 and the second screw extruder feeder 15 comprise: the device comprises an extrusion cylinder, a spiral shaft, a transmission device, a bearing, a rack, a reamer, a hopper, a feeding hole, a discharging hole and the like. The first screw extrusion feeder 12 is arranged between the belt electronic scale 11 and the drying device 13, the second screw extrusion feeder 15 is arranged between the drying device 13 and the fourth cracking reaction kettle 19, the extrusion cylinder is a conical cylinder, and the screw shaft is a screw auger shaft. The toper extrusion barrel one end top is equipped with the feed inlet, the hopper is installed to the feed inlet top, hopper and 11 afterbody discharge end lug connection of belt electronic scale, toper extrusion barrel afterbody is equipped with the discharge gate, discharge gate and drying device 13's feed inlet lug connection, the afterbody discharge gate has about a meter no spiral auger axle, this section is sealed pressurize section, mainly play airtight oxygen that separates, cut off external oxygen, prevent that oxygen from getting into drying device 13 and cracking reaction kettle section of thick bamboo and the interior gas of a section of thick bamboo and outwards not revealing, this equipment has guaranteed that the material gets into and is dried and the schizolysis under the inclosed state of oxygen-free. The material is discharged from the tail part of the belt electronic scale 11 and directly enters a feeding hole of the first screw extrusion feeder 12, the driving device drives the screw shaft to be pushed forward along the axial direction under the rotating pushing of the screw shaft, and the material forms huge extrusion force under the action of the changed screw pitch and the adjusting baffle in the advancing process, so that the material is extruded and formed under the action of external force. When the material extrudes out the discharge gate, automatic helical blade is installed to the discharge gate, breaks up extrusion moulding's material, and the material after breaking up directly gets into drying device 13 and No. four cracking reaction cauldron in, is favorable to material fast drying and schizolysis. The device has the advantages that: the feeding is uniform, the oxygen isolation and sealing performance are good, and the operation is simple.

Referring to fig. 2, the drying device 13 is a rotatably disposed drying outer cylinder 52, the heat exchanging mechanism 14 is a cooling inner cylinder 53 disposed inside the drying outer cylinder 52, and the cooling inner cylinder 53 is connected to the carbon collecting device through the cooling mechanism 24. The cooling inner cylinder 53 is fixedly connected with the drying outer cylinder 52, an outer cylinder guide plate 54 for pushing the material to move axially is arranged in the drying outer cylinder 52, an outer cylinder lifting blade 55 is also arranged in the drying outer cylinder 52, and an inner cylinder guide plate 56 for pushing the material to move axially is arranged in the cooling inner cylinder 53.

The device has set up two concentric cylinders of different diameters different length, utilize the waste heat to dry the material, adopt two barrel fixed connection, utilize the outer barrel 52 transmission of stoving to drive the same direction rotational speed rotation of inner and outer barrel, the material gets into the intermediate layer between outer barrel 52 of stoving and the cooling inner barrel 53 from the outer barrel feed inlet and rotates along with the barrel, the material rolls in the barrel intermediate layer and is turned over outer barrel stock guide 54 and outer barrel lifting blade that set up by outer barrel inner wall and dry the material and impel forward until the material after drying is discharged from outer barrel discharge gate, and carry auger or bucket elevator to carry to the pyrolysis reaction unit through the material of drying.

The household garbage with high-temperature waste heat enters the cooling inner cylinder 53 from the feeding hole of the cooling inner cylinder 53 by the high-temperature carbon discharging auger 23 and rotates along with the cylinder, the high-temperature carbon is rolled in the cooling inner cylinder 53 to dissipate heat, the dissipated heat is conducted through the cooling inner cylinder 53 to dry materials in the interlayer of the drying outer cylinder 52, and the high-temperature materials are turned and pushed forwards by the guide plate arranged on the inner wall of the cooling inner cylinder 53 until being discharged from the discharging hole of the cooling inner cylinder 53. Sealing devices 68 are arranged at two ends of the inner and outer cylinders, and material inlets and material outlets at two ends of the inner and outer cylinders are fixed and do not rotate, so that the inner closed state of the cylinders is ensured.

The device utilizes the charcoal that has the high temperature waste heat to directly get into the inside heat dissipation of barrel 53 in the cooling, and the intermediate layer conducts heat and dries the material, and the heat conduction effect is good, and heat utilization rate is high, and is short to material stoving time, and is fast, and output is high, reduce cost. The drying outer cylinder 52 transmission device is used for driving the cooling inner cylinder 53 to rotate in the same direction and at the same rotating speed, so that power is saved, energy consumption is reduced, and operating cost is reduced. The waste heat conversion technology is utilized to reduce the heat of the high-temperature carbon by inputting a large amount of equipment and consuming a large amount of energy, and the waste heat is utilized to directly convert the heat into heat energy for drying the materials, so that the energy is greatly saved, the energy consumption is reduced, the emission is reduced, and the cost is reduced.

In the prior art, water is adopted to directly cool high-temperature materials, so that a large amount of water vapor enters a cracking reaction kettle from a discharge port, and the water vapor enters the kettle and consumes a large amount of heat energy to help water to evaporate, so that the cracking treatment of the materials in the reaction kettle is greatly influenced. The utility model discloses guaranteed the technique of dry play material under high temperature, avoided vapor to get into the cleavage reaction cauldron, convenient domestic waste stores and transports after the cooling. The high-temperature carbon after cracking treatment reduces water pollution by using a cooling device. The temperature of the high-temperature carbon discharged from the cracking reaction kettle is about 500 ℃, the drying device 13 is adopted in the technology, the waste heat of the high-temperature carbon discharged after cracking treatment is fully utilized to conduct heat of the barrel in the drying device 13, and the heat energy led out is used for drying treatment of the household garbage. Plays a role of oxygen isolation and sealing, and ensures that the cracking reaction kettle is carried out in an oxygen-free and sealed state in the cracking treatment process.

Referring to fig. 3, the cracking reaction device includes a plurality of cracking reaction kettles, the barrel of each cracking reaction kettle is a concentric horizontal double-barrel hollow cylinder composed of two cylinders with different diameters, the outer barrel of each adjacent cracking reaction kettle is communicated with the outer barrel, the inner barrel is communicated with the inner barrel, the cracking reaction kettles are connected in series up and down, the lowest cracking reaction kettle is connected with a heating device 20, a drying device 13 is communicated with the inner barrel of the uppermost cracking reaction kettle through a discharge port of a screw auger conveyor or a lifter and a second screw extrusion feeder 15, two ends of the barrel of each cracking reaction kettle are sealed through end sockets, and a waveform metal expansion joint 67 is arranged between each two adjacent cracking reaction kettles and between the barrel and the end socket of each cracking reaction kettle.

The plurality of cracking reaction kettles comprise a first cracking reaction kettle 16, a second cracking reaction kettle 17, a third cracking reaction kettle 18 and a fourth cracking reaction kettle 19, the first cracking reaction kettle 16 is connected with a heating device 20, and the household garbage dried by the drying device 13 sequentially passes through the fourth cracking reaction kettle 19, the third cracking reaction kettle 18, the second cracking reaction kettle 17 and an inner cylinder of the first cracking reaction kettle 16; after the heating device 20 heats the first cracking reaction kettle 16, the hot gas in the cracking kettle interlayer 61 of the first cracking reaction kettle 16 sequentially flows through the cracking kettle interlayers 61 of the second cracking reaction kettle 17, the third cracking reaction kettle 18 and the fourth cracking reaction kettle 19; the hot gas outlet of the outer cylinder of the fourth cracking reactor 19 is connected with the hot gas inlet of the drying device 13.

The cracking reaction kettle is two concentric horizontal cylinders with different diameters, a cracking kettle interlayer 61 is formed between the outer cylinder 58 and the inner cylinder 59 of the cracking kettle, and the cracking kettle interlayer 61 is used for heating the inner cylinder 59 of the cracking kettle by heating hot gas from bottom to top. The device has adopted a plurality of cracking reaction cauldron to establish ties and intercommunicate and use, at the gas nozzle of the 16 bottom combustion chambers 77 both sides installations of first cracking reaction cauldron, has avoided gas nozzle flame directly to the burning of barrel 59 bottom in the cracking reaction cauldron, and this design technique burning is heated evenly, has reduced the destruction that direct combustion caused the barrel, prolongs cracking reaction cauldron's life. The heat energy generated by heating is heated from bottom to top for cracking treatment of the cracking reaction kettle, and continuous operation is maintained for 24 hours. The middle of this cracking reaction cauldron sets up by hollow shaft 62, and long-time operation can warp the bending under the cauldron high temperature, so this hollow shaft 62 has adopted the enhancement design, sets up in the middle of hollow shaft 62 and installs the cross strengthening rib, and this design has increased hollow shaft 62's intensity, prevents effectively that hollow shaft 62 from operating under high temperature and causing hollow shaft 62 to warp the bending, has guaranteed the normal operating of equipment, has prolonged the life of equipment. The outer heating device 20 is arranged at the bottom of the lower part of the cracking kettle feeding hole 66 of the first cracking reaction kettle 16, and if the temperature in the kettle does not reach the temperature required by complete cracking after the bottom of the first cracking reaction kettle 16 is heated, the temperature required by cracking in the kettle is met by heating the outer auxiliary heating device from the outside. The baffle plate 76 is arranged in front of the discharge hole of the cracking reaction kettle, and the design technology ensures that the materials have enough residence time in the kettle to be subjected to complete cracking carbonization. The spiral extruder is arranged in front of the drying device 13, so that the material sealing, sealing and oxygen isolating effects are achieved, and the domestic garbage is fed into the drying device 13 by the spiral extruder, so that continuous, uniform and uninterrupted feeding is guaranteed. After being dried and cracked, the household garbage is discharged from a cracking kettle discharge port 75 at one end of the bottom of the first cracking reaction kettle 16 and enters a high-temperature carbon box 22 of the high-temperature carbon discharging device, and then is discharged by a high-temperature carbon discharging auger 23, and the high-temperature carbon box 22 and the high-temperature carbon discharging auger 23 play a role in sealing the material. The cracking reaction kettle is provided with drying sealed feeding arranged at the front and the back and sealed discharging after cracking, and the device ensures that the cracking reaction kettle is in a totally sealed anaerobic state in the cracking treatment process and has no discharge midway.

The device adopts a low-temperature anaerobic cracking treatment technology to treat all organic wastes (including organic wastes such as domestic wastes, industrial wastes, coal gangues, straws, oil sludge, solid wastes and hazardous wastes) without classification and screening treatment and secondary pollution in the treatment process. The work direct influence of schizolysis reation kettle both ends bearing 69 under high temperature to the life of bearing 69 and the normal operating of equipment, and prior art can't solve always, the utility model discloses adopt external design on equipment structure, move bearing frame 71 and bearing 69 to the installation of both ends head outside, punch in addition on both ends solid spindle nose 70 and install water cooling plant and pass through hydrologic cycle cooling treatment, guaranteed bearing 69 life. Sealing devices 68 are arranged outside end covers 72 at two ends of the outer cylinder 58 of the cracking kettle, so that the outer cylinder has the function of sealing and isolating oxygen. The design technology ensures that the kettle runs in a closed oxygen-free state. The utility model discloses the wave form metal expansion joint 67 has been installed in the design between barrel both ends and the end cover 72 in the reation kettle on structural design, has also designed and installed wave form metal expansion joint 67 between the upper and lower business turn over material mouth of schizolysis reation kettle in addition, has eliminated the schizolysis reation kettle effectively in the design like this and has produced gravitation to the barrel in the work thermal expansion shrinkage under high temperature, has prolonged schizolysis reation kettle's life. The utility model discloses the spiral wind channel has been installed in the design of schizolysis cauldron intermediate layer 61 in the middle of barrel 59 in the outer barrel 58 of schizolysis cauldron and the schizolysis cauldron, 16 bottom heating device 20 of first schizolysis reation kettle heats the back steam and gets into intermediate layer steam wind channel and then get into the spiral wind channel and heat the interior barrel of schizolysis reation kettle, the design in spiral wind channel makes the steam prolong at the internal dwell time of cauldron, make full use of heat energy has guaranteed temperature rapid heating up in the cauldron, material schizolysis with higher speed.

Referring to fig. 4-8, the cracking reaction kettles are described one by one as follows:

the fourth cleavage reaction vessel 19 includes: the device comprises a cracking kettle inner cylinder 59, a cracking kettle outer cylinder 58, an end cover 72, an access hole, a solid shaft head 70, a hollow shaft 62, a propeller blade 63, a spiral air duct, a corrugated metal expansion joint 67, a bearing 69, a bearing seat 71, a sealing device 68, a coupling, a transmission device, a cracking kettle feed inlet 66, a cracking kettle discharge outlet 75, an interlayer hot air inlet 74, an interlayer hot air outlet 65, a cracking gas outlet 64, an external heating hot air inlet 73, a cylinder external heat insulation layer 60, a measurement sensing device and a cylinder fixing support.

The inner barrel 59 of the cracking kettle is a horizontal cylinder which is a single-layer cylinder, is arranged in the outer barrel, is connected with each other, fixed and does not rotate, and is made of high-temperature-resistant stainless steel and high-temperature-resistant special boiler steel materials. Wave-shaped metal expansion joints 67 are arranged at the two ends of the barrel 59 in the cracking kettle and in the middle of the barrel 59 in the cracking kettle and are connected with each other by flanges. A cracking kettle feeding port 66 is designed at one end above the fourth cracking reaction kettle 19, the cracking kettle feeding port 66 is connected with the drying device 13 through a screw auger conveyor or a lifter and a discharging port of the second screw extrusion feeder 15, a cracking gas outlet 64 is arranged at one end above a cracking kettle inner cylinder 59 and communicated with a cracking kettle outer cylinder 58, the cracking gas outlet 64 is directly connected with a pipeline, cracking gas is guided into a cracking gas processing device downstream through the pipeline, a cracking kettle discharging port 75 is arranged at one end below the fourth cracking reaction kettle 19, the cracking kettle discharging port 75 is connected with the cracking kettle feeding port 66 of the third cracking reaction kettle 18, a waveform metal expansion joint 67 is installed in the middle, two ends of the waveform metal expansion joint 67 are connected through flanges, and a totally closed anaerobic state in the kettle must be ensured in the cracking treatment operation process in the whole cracking reaction kettle.

The outer barrel 58 of the cracking kettle is a circular horizontal barrel and is arranged outside the inner barrel 59 of the cracking kettle and is mutually connected and fixed with the inner barrel 59 of the cracking kettle without rotation. Adopt high temperature resistant stainless steel and high temperature resistant special boiler steel material to make, barrel 59 and outer barrel 58 of pyrolysis kettle are two different diameter concentric cylinders in the pyrolysis kettle, formed pyrolysis kettle intermediate layer 61 between two barrels, set up the spiral wind channel of having installed in pyrolysis kettle intermediate layer 61, the spiral wind channel is connected with the outer barrel of pyrolysis kettle, pyrolysis kettle outer barrel 58 both ends are connected with end cover 72, pyrolysis kettle outer barrel 58 is circular horizontal barrel, outer barrel 58 peripheral surface installation of pyrolysis kettle is about 15 ~ 25 centimeters thick high temperature resistant fire prevention fire-retardant outer heat preservation 60. Cracking kettle feed inlet 66 is connected with drying device 13 through screw auger conveyor or lifting machine and second screw extrusion batcher 15 discharge gate, outer barrel 58 top one end of cracking kettle is equipped with pyrolysis gas outlet 64 and the intercommunication of barrel 59 in the cracking kettle, pyrolysis gas outlet 64 and pipeline lug connection, pyrolysis gas is through leading-in pyrolysis gas processing apparatus of pipeline following current, outer barrel 58 top one end of cracking kettle is equipped with intermediate layer steam gas outlet 65, intermediate layer steam gas outlet 65 is connected with high temperature draught fan 7, supply the material drying process in drying device 13 to the intermediate layer steam through the tuber pipe by high temperature draught fan 7. A cracking kettle discharge port 75 is arranged at one end below the cracking kettle outer cylinder 58 of the fourth cracking reaction kettle 19 and communicated with the cracking kettle inner cylinder 59, the cracking kettle discharge port 75 is connected with a cracking kettle feed port 66 of the third cracking reaction kettle 18, a waveform metal expansion joint 67 is arranged in the middle, two ends of the waveform metal expansion joint 67 are connected through flanges, an interlayer hot gas inlet 74 is arranged at one end below the cracking kettle outer cylinder 58 of the fourth cracking reaction kettle 19, the interlayer hot gas inlet 74 is connected with an interlayer hot gas outlet 65 at one end above the cracking kettle outer cylinder 58 of the third cracking reaction kettle 18 through a flange, the waveform metal expansion joint 67 is arranged in the middle, and two ends of the waveform metal expansion joint 67 are connected through flanges.

And the end covers 72 are arranged on the outer sides of the wave-shaped metal expansion joints 67 at the two ends of the cylinder body and are made of high-temperature-resistant boiler steel plates or stainless steel materials through welding processing. The two ends of the cylinder body have a sealing function on the cylinder body, the hollow shaft 62 is arranged at the center of the end cover 72, and the sealing devices 68 are fixedly arranged on the outer sides of the end cover 72 and are tightly matched with each other.

The access hole is installed at both ends above the fourth cracking reaction kettle 19, the inner barrel 59 of the cracking kettle is communicated with the outer barrel 58 of the cracking kettle in series, a safety cover is arranged above the access hole, a high-temperature-resistant fireproof flame-retardant sealing material is installed below the safety cover, a high-temperature-resistant fireproof flame-retardant outer heat-insulating layer 60 is installed above the safety cover, and the device is mainly convenient for equipment maintenance and installation.

The solid shaft head 70 is formed by welding carbon steel and is installed at two ends of the hollow shaft 62, the high-temperature-resistant bearing 69 is installed at the solid shaft head 70, the bearing 69 is installed in the bearing seat 71, the bearing seat 71 is installed outside the sealing devices 68 at two ends of the kettle body, two water holes are respectively formed in the bearing seat 71 and the solid shaft head 70, the two holes are connected, one hole is a water inlet hole, the other hole is a water outlet hole, the solid shaft head is matched with a water cooling device for use, the cooling effect is achieved, the service life of the bearing 69 is prolonged, and the normal operation of the equipment is guaranteed.

The hollow shaft 62 is formed by welding seamless steel tubes and is installed in the middle of the kettle, the hollow shaft 62 is arranged in the middle of the main shaft, the two ends of the shaft are solid shafts, high-temperature-resistant bearings 69 are installed at solid shaft heads 70 at the two ends of the shaft, the bearings 69 are installed in bearing seats 71, the bearing seats 71 are installed on the outer sides of sealing devices 68 at the two ends of the kettle, and the bearing seats 71 and the solid shaft heads 70 at the two ends of the shaft are respectively provided with a water cooling device. The hollow shaft 62 is provided with a propeller blade 63, and the materials enter the fourth cracking reaction kettle 19, and the main shaft and the propeller blade 63 are driven by a transmission device to continuously turn, copy and forward push the materials until the materials are discharged from a discharge hole.

The propeller blade 63 is arranged on a hollow shaft 62 body in the kettle body and is formed by welding a hollow seamless steel pipe and an anticorrosive steel plate, the propeller blade is designed and designed to be arranged in a multi-row, interval and ladder mode according to the space in the kettle, the design of the propeller blade is provided with an inclination angle, the arrangement is uniform without dead angles, the rear surface of the propeller blade which is 1-2 meters is arranged on a main shaft below a feed inlet 66 of the cracking kettle is the propeller blade 63, the design is to prevent materials from entering the feed inlet and then being accumulated at the feed inlet, when the materials enter the kettle, the materials are repeatedly turned and fried in the kettle by a transmission device and the propeller blade 63 to push the materials forward until the materials are discharged.

Spiral air duct, install in schizolysis cauldron interlayer 61 between barrel 59 and the outer barrel 58 of schizolysis cauldron in the schizolysis cauldron, be formed by steel sheet preparation welding, adopt spiral design around cylinder 59 surface around the schizolysis cauldron in the cauldron around, be connected with the interior outer barrel of schizolysis cauldron, supply to heat steam and heat around cylinder 59 heating in the schizolysis cauldron through intermediate layer spiral air duct, this spiral air duct design, it is long to make heating steam dwell time in spiral air duct, the programming rate is fast, make the material split fast completely in the schizolysis reation kettle, and the increase of production is realized, and the cost is reduced.

The corrugated metal expansion joint 67 is formed by adopting a unique process, selecting a special steel plate or stainless steel material and performing one-step compression molding through a high-pressure press or welding through a welding process. Two ends of the wave-shaped metal expansion joint 67 are connected by flanges, and a single wave-shaped metal expansion joint or a plurality of wave-shaped metal expansion joints 67 can be used in a superposed connection mode. The device is arranged between two ends of a cylinder 59 and an end cover 72 in a cracking kettle of the fourth cracking reaction kettle 19 and in the middle of the cylinder 59 in the cracking kettle by adopting a wave-shaped metal expansion joint 67 adopting a welding process. The middle position between the upper feed inlet and the lower feed outlet of the fourth cracking reaction kettle 19 and the middle position between the hot air inlet 74 and the air outlet of the upper interlayer and the lower interlayer of the fourth cracking reaction kettle 19 are connected by flanges by a corrugated metal expansion joint 67 formed by one-time pressing, and the outer side of the corrugated metal expansion joint 67 of the barrel 59 in the cracking reaction kettle is provided with an end cover 72 which is connected by flanges. The corrugated metal expansion joint 67 is mainly used for adjusting or eliminating the attraction of the barrel body generated by the operating temperature of the cracking reaction kettle body at high temperature on the barrel body through the device. The protective kettle body does not deform or crack in the operation process, and the service life of the cracking reaction kettle body is prolonged.

The bearing 69 is arranged in the bearing seat 71 outside the sealing devices 68 at the two ends of the kettle body, the bearing seat 71 is arranged outside the sealing devices 68 at the two ends of the kettle body, the bearing seat 71 is fixedly and tightly connected with the sealing devices 68, and the bearing 69 is influenced by the temperature in the kettle and works at high temperature, so that the service life of the bearing 69 can be influenced. In order to enable the bearing 69 to normally operate in a high-temperature environment, a water circulation cooling process is adopted, water holes are designed in the bearing seat 71 and the two end solid shaft heads 70 of the main shaft, and a water circulation cooling device is utilized to achieve the cooling effect of the bearing 69, ensure the normal operation of equipment and prolong the service life of the bearing 69.

The bearing seat 71 is made of cast steel, is formed by a casting process and is formed by one-step forming and machining. The bearing pedestal 71 is arranged outside the sealing devices 68 at the two ends of the solid shaft head 70, is provided with a water inlet hole communicated with a water outlet hole, and has a cooling effect on the bearing 69 through a water cooling device.

The sealing device 68 includes a packing seal and a mechanical seal, wherein the packing seal is a gland seal. The end covers 72 are arranged on the outer sides of the two ends of the cylinder body, and the end covers generate pressing force by the pressing covers, so that the packing is pressed, the packing is forced to be pressed in the radial force of the sealing effect, and the sealing effect is achieved. The packing sealing structure is simple and convenient to operate and maintain. The mechanical seal is arranged between the packing seal and the bearing 69, the device is formed by one-time pressing and forming of high-strength steel or stainless steel materials in a high-pressure press and welding, is a shaft seal device of rotary machinery, is a device for preventing fluid leakage, is formed by keeping fit and relative sliding of at least one pair of end faces perpendicular to a rotation axis under the action of fluid pressure and the elasticity or the magnetic force of a compensation mechanism and the cooperation of auxiliary seal, is arranged on the outer side of end covers 72 at two ends of a shaft, and plays a role in sealing a cylinder body and the shaft.

The coupling is made of high-strength wear-resistant steel, mainly plays a role in connection and transmission of a transmission device and a main shaft, plays a role in protecting a motor and a speed reducer under the conditions of overlarge torsion force and overload of the shaft, and is convenient for equipment maintenance.

The transmission device comprises a motor and a gearbox. The motor drives the gearbox, the gearbox sets the rotating speed as required and drives the main shaft and the propeller blade 63 in the fourth cracking reaction kettle 19 to rotate through the coupling, and then the materials in the kettle are driven to advance and accelerate the cracking of the materials.

The cracking kettle feed inlet 66 and the cracking kettle discharge outlet 75 enable the upper kettle and the lower kettle of the cracking reaction kettle and the inner barrel 59 of the cracking kettle between the kettles to be mutually communicated and connected, the device is designed for material entering and discharging, the cracking kettle feed inlet 66 is designed at one end above the fourth cracking reaction kettle 19, the cracking kettle feed inlet 66 is connected with the drying device 13 through a screw auger conveyor or a lifter and a second screw extrusion feeder, the cracking kettle discharge outlet 75 is designed at one end below the fourth cracking reaction kettle 19, the cracking kettle discharge outlet 75 can also be arranged at one end side face of the outer barrel 58 of the cracking kettle for discharging, the cracking kettle discharge outlet 75 is connected with the cracking kettle feed inlet 66 above the third cracking reaction kettle 18, a waveform metal expansion joint 67 is designed and installed at the middle position between the upper feed inlet and the lower feed outlet of the cracking reaction kettle, and two ends are connected through flanges.

The interlayer hot gas inlet 74 and the interlayer hot gas outlet 65 are designed for the inlet and the outlet of interlayer hot gas, the interlayer hot gas inlet 74 is designed at one end below the fourth cracking reaction kettle 19, and the interlayer hot gas inlet 74 is connected with the interlayer hot gas outlet 65 at one end above the third cracking reaction kettle 18 by a flange. The middle is provided with a wave-shaped metal expansion joint 67, and the two ends are connected by flanges. Interlayer steam gas outlet 65 designs in the 19 top one end of fourth schizolysis reation kettle, interlayer steam gas outlet 65 and high temperature draught fan 7 lug connection, send into the hot gas entry of drying device 13 top one end by high temperature draught fan 7 through the pipeline to interlayer steam, supply drying device 13 to carry out drying process to the material, this interlayer steam be with split between reation kettle and the cauldron between the outer barrel 58 of schizolysis cauldron be connected, interlayer steam gets into the interior circulation from bottom to top of cauldron body interlayer spiral duct and heats barrel 59 in the schizolysis cauldron.

And a pyrolysis gas outlet 64 which is designed for discharging pyrolysis gas, wherein the pyrolysis gas outlet 64 is designed at one end above the fourth cracking reaction kettle 19, the pyrolysis gas outlet 64 is directly connected with a pipeline, and the pyrolysis gas is sent into a pyrolysis gas treatment device through the pipeline for treatment and purification and then enters a gas bag for storage.

External heating steam air inlet 73, be by the external heating steam air inlet 73 that the high temperature draught fan 7 sent hot-blast through the tuber pipe into the 19 bottoms of fourth schizolysis reation kettle after the heating of outside auxiliary heating device, then the spiral duct that gets into in the schizolysis cauldron intermediate layer 61 heats barrel 59 in to the schizolysis cauldron, fourth schizolysis reation kettle 19's external heating steam air inlet 73 and the direct flange of using of tuber pipe are connected, the device is the fourth schizolysis reation kettle 19 backup heating, play the quick adjustment and heat, increase of production, cracking with higher speed.

The outer heat preservation layer 60 is installed on the outer surface of the kettle body of the cracking reaction kettle, is about 15-25 cm thick, plays a heat preservation and insulation role on the temperature in the kettle, is installed around the outer surface of the kettle body, is made of fireproof flame-retardant heat preservation materials, is made of a stainless steel thin plate or a thin color steel plate cover on the surface, is modularly designed according to the shape and the size of the surface of the outer barrel body 58 of the cracking reaction kettle, and is directly assembled on site. The heat preservation effect is good for advantage, simple structure, simple to operate, the maintenance of being convenient for.

And the measuring and sensing device is arranged on the fourth cracking reaction kettle 19 and is used for measuring the changes of temperature, pressure, rotating speed of a shaft and the like in the kettle, the sensor transmits the detected data to the control center, and the staff can master and adjust the change of material cracking treatment and the actual situation in the kettle at any time through data analysis.

The barrel fixing support is formed by welding profile steels and is arranged at two ends and the middle position of the bottom of the outer barrel 58 of the cracking kettle, and the lower part of the barrel fixing support is fixed on a horizontal steel beam rail, so that the balance and stability of the cracking kettle are ensured.

Third schizolysis reation kettle 18 compares with fourth schizolysis reation kettle 19, has increased striker plate 76 to third schizolysis reation kettle 18 does not set up the cracked gas export, and the business turn over material mouth and the outer hot gas inlet of heating of third schizolysis reation kettle 18 set up in opposite direction with fourth schizolysis reation kettle 19 in addition. The striker plate 76 is made of a steel plate and is arranged in front of a discharge hole of a cracking kettle at one end below the third cracking reaction kettle 18, the height of the striker plate 76 can be flexibly adjusted as required, the height is less than half of the diameter of the barrel 59 in the cracking kettle, and the striker plate 76 is arranged at the lower half part of the barrel 59 in the cracking kettle. The main function is to adjust the stay time of the material in the cracking treatment in the kettle, and ensure the material to have sufficient time for complete cracking in the kettle.

Compared with the fourth cracking reaction kettle 19, the second cracking reaction kettle 17 and the first cracking reaction kettle 16 are also added with a baffle plate 76, and the baffle plates of the first cracking reaction kettle, the second cracking reaction kettle and the third cracking reaction kettle are basically the same. And the second and first

cleavage reaction vessels

17 and 16 are not provided with a cleavage gas outlet. In addition, the feed/discharge port and the externally heated hot gas inlet of the second cleavage reaction vessel 17 are disposed in the same direction as the fourth cleavage reaction vessel 19, and the feed/discharge port and the externally heated hot gas inlet of the first cleavage reaction vessel 16 are disposed in the same direction as the third cleavage reaction vessel 18. The outer cylinder of the first cracking reactor 16 is additionally provided with a combustion chamber.

A heating device 20 comprising: combustion chamber 77, combustion bed, burner, auto-ignition, and regulator valve 79.

The combustion chamber 77 is fixed in the outer barrel 58 below bottom of the pyrolysis kettle of first pyrolysis reaction kettle 16, has seted up a rectangle combustion chamber 77, and combustion chamber 77 is connected with the outer barrel 58 of the pyrolysis kettle of 16 below bottoms of first pyrolysis reaction kettle, and the combustion bed is installed to combustion chamber 77 both sides inboard, and combustion chamber 77 adopts the steel sheet to enclose to weld all around and seals, has guaranteed that the gas fully burns, and no gas discharges.

The combustion bed is installed on the inner sides of two sides of the combustion chamber 77 and is formed by welding anticorrosive steel and stainless steel materials, a combustor nozzle 78, a regulating valve 79, a gas pipeline, an oxygen pipeline and a control device are installed on the combustion bed, and the combustion bed is convenient to disassemble and maintain.

And the burner nozzle 78 are arranged on the combustion bed, the burner nozzle 78 is arranged on the burner, and the burner nozzle 78 is upward and inclined at an angle and is opposite to the cracking kettle inner cylinder 59 of the first cracking reaction kettle 16 for heating. The burner is composed of a burner shell, a gas pipe, a gas cap, an air cyclone piece, a safety regulating valve 79 and the like. The burner nozzle 78 adopts a modular design, has simple structure, convenient installation and maintenance, safe and stable combustion, no backfire or fire-off phenomenon, sufficient combustion, energy conservation and environmental protection.

The automatic ignition device adopts a pulse igniter, is a common ignition mode of industrial combustion equipment, consists of a switch igniter, and has the advantages of simple and convenient operation, high ignition and ignition rate, stable combustion, strong controllability, simple structure, convenient maintenance, safety and reliability.

Governing valve 79 installs between combustor and oxygen intake pipe and gas intake pipe, and oxygen intake pipe and gas intake pipe are connected to governing valve 79 one end, and the other end passes through the pipeline to be connected with the combustor, and governing valve 79 mainly used adjusts the best proportion of admitting air of gas and oxygen, lets the gas fully burn.

Exhaust gas treatment device 30, also known as: the spray desulfurization tower comprises a desulfurization tower cylinder, a stirrer, a spray device, a demister, a backwashing device, a sedimentation tank, an air inlet, an air outlet and the like. The desulfurizing tower barrel adopts the steel sheet to make for the cylinder, it is equipped with the air inlet to spray the desulfurizing tower bottom, pressurize by the high temperature draught fan, send dust and tail gas into desulfurizing tower bottom air inlet through the pipeline, desulfurizing tower bottom is the sedimentation tank, install a side agitator in the tower, the tower body middle part is equipped with the three-layer and sprays the water distribution device, two-layer defroster, three-layer back flush device, a plurality of shower nozzles of multilayer in the desulfurizing tower, no dead angle sprays alkaline water smoke, the top of desulfurizing tower is equipped with the gas vent, dust and tail gas get into plasma deodorizing device after handling purification after getting into the tower body, reach national emission standard requirement after the purification treatment.

The cracked gas treatment device comprises a three-phase separator 26, a condenser 27, a gas-liquid separator 28 and an oil-water separator 29, wherein the three-phase separator 26 is connected with a cracked gas outlet 64 of the cracking reaction device, a water phase outlet of the three-phase separator 26 is connected with the oil-water separator 29, a gas phase outlet of the three-phase separator 26 is connected with the condenser 27, a liquid phase outlet of the condenser 27 is connected with an inlet of the gas-liquid separator 28, a liquid phase outlet of the gas-liquid separator 28 is connected with the oil-water separator 29, a gas phase outlet of the gas-liquid separator 28 is connected with a gas collecting mechanism, oil phase outlets of the three-phase separator 26, the condenser 27, the gas-liquid separator 28 and the oil-water separator 29 are connected with an oil storage tank, and a water phase outlet of the oil-water separator 29 is connected with a sewage treatment device. The gas collecting mechanism comprises a desulfurization and dechlorination device 33, a gas deodorization and purification device 34, a gas storage bag 35 and a gas generator 36 which are connected in sequence, and the gas storage bag 35 is connected with the heating device 20 of the cracking reaction device. The cracked gas is discharged from an outlet above the fourth cracking reaction kettle 19 and enters a three-phase separator 26 through a pipeline, the cracked gas enters the three-phase separator 26, the temperature of the cracked gas is controlled to be about 200 ℃, the separated heavy oil (tar) and light oil are respectively sent to a heavy oil storage tank 31 and a light oil storage tank 32 through pipelines, the separated combustible gas directly enters a condenser 27, the temperature of the combustible gas enters the condenser 27 is controlled to be about 80 ℃, the separated water enters an oil-water separator 29 through a pipeline for further treatment, the separated heavy oil (tar) and light oil separated from the condenser 27 are respectively sent to the heavy oil storage tank 31 and the light oil storage tank 32 through pipelines, the separated combustible gas directly enters a gas-liquid separator 28 for further treatment, the separated water enters the oil-water separator 29 through a pipeline for further treatment, the combustible gas separated from the gas-liquid separator 28 enters a desulfurization and dechlorination device 33 through a pipeline for further purification treatment, the separated heavy oil (tar) and light oil are respectively sent to a heavy oil storage tank 31 and a light oil storage tank 32 through pipelines, the separated water enters an oil-water separator 29 through pipelines for further treatment, the heavy oil (tar) and the light oil which are sent out through the oil-water separator 29 are respectively sent to the heavy oil storage tank 31 and the light oil storage tank 32 through pipelines, and the separated water is sent to a sewage treatment device through pipelines for treatment and then is recycled. The combustible gas is purified by the desulfurization and dechlorination device 33 and then is directly sent to the gas storage bag 35 to be stored for the heating device 20 to heat for self use or power generation and net surfing. The three-phase separator 26, the condenser 27, the gas-liquid separator 28 and the oil-water separator 29 may adopt the corresponding structures in CN 202010192055.2.

A desulfurization and dechlorination device 33, which is a circulating fluidized bed, and is a method for desulfurization and dechlorination of the cracked gas. The method comprises the steps of separating solid particles leaving a circulating fluidized bed reactor by a cyclone separator, simultaneously feeding the solid particles and quicklime into a humidifier, spraying atomized water droplets into the humidifier, humidifying the solid particles to activate spent desulfurizer in the solid particles, humidifying the quicklime to digest the solid particles, feeding the solid particles into the circulating fluidized bed reactor, and reacting acid gas components in the circulating fluidized bed with the activated spent desulfurizer and the digested lime. The device mainly comprises a water pump circulating material flow humidifying device, a circulating fluidized bed reactor and the like. The device humidifies fresh desulfurizer and spent desulfurizer in the humidifier, the material entering the circulating fluidized bed is a wet material, the scaling caused by spraying slurry in the conventional circulating fluidized bed can be solved, and the problems of abrasion, blockage and the like of a nozzle do not exist in pulping equipment due to the fact that lime digestion in a conventional desulfurization system is cancelled.

The high-temperature carbon discharging device comprises a high-temperature carbon box 22 and a high-temperature carbon discharging auger 23, the high-temperature carbon box 22 is connected with a domestic garbage discharging port of the cracking reaction device, one end of the high-temperature carbon discharging auger 23 is connected with the lower end of the high-temperature carbon box 22, and the other end of the high-temperature carbon discharging auger 23 is connected with a feeding port of the domestic garbage cooling device. In the prior art, water is directly contacted with carbon for cooling, a large amount of heat energy is consumed to help water to evaporate when a large amount of water vapor is discharged into a cracking reaction kettle, and the cracking treatment of the substances in the reaction kettle is greatly influenced. The device adopts the technology that the carbon ensures the dry carbon production at high temperature, avoids the water vapor from entering the cracking reaction kettle, and is convenient for carbon storage and transportation. The carbon is cooled by a packing auger cooling device at a high temperature, so that water pollution is reduced. The temperature of the carbon discharged from the cracking reaction kettle is about 500 ℃, and the device adopts a heat conduction and heat exchange device to fully utilize waste heat for drying materials. 5 the device plays a role in oxygen isolation and sealing, and ensures that the cracking reaction kettle is carried out in an oxygen-free and sealed state in the cracking treatment process.

A high temperature carbon box 22, comprising: the device comprises a box body, a feeding hole, a stirrer, a limiter, a thermometer, a pressure gauge and the like. High temperature charcoal case 22 is the rectangle box, adopt the steel sheet welding to form, box top is equipped with the feed inlet, the feed inlet is connected with pyrolysis reaction device's discharge gate, the wave form expansion joint is installed to the centre, the expansion joint both ends are connected with the flange, install the agitator in the box of box top both sides, install the stopper from top to bottom in the box inboard, thermometer and manometer are installed to the box top, the bottom is equipped with the discharge gate in the box, discharge gate and high temperature play charcoal auger 23 access connection, high temperature goes out charcoal auger 23 and installs in the bottom half, material after the schizolysis is handled is followed the pyrolysis reaction cauldron discharge gate and is discharged direct entering high temperature charcoal case 22 and then is sent into drying device 13 by high temperature charcoal case 22 bottom high temperature play charcoal auger 23, the box outside integral mounting has the heat preservation. The device is in a fully-closed oxygen-free state, and plays a role in sealing and isolating oxygen.

High temperature goes out charcoal auger 23 includes: the auger cylinder, the auger shaft, the bearing 69, the transmission device, the feeding port, the discharging port and the like. The device is a cylinder and is formed by welding steel pipes, an inclination angle is installed on a high-temperature carbon discharging auger 23, a transmission device (motor) is installed at the bottom of one end of an auger cylinder, one end of the cylinder is connected with the transmission device through a flange, a shaftless auger piece is installed inside the cylinder, a high-temperature bearing 69 is installed at one end of the shaftless auger piece and connected with the transmission device, the other end of the shaftless auger piece is not fixed, a feed inlet is formed in one end above the cylinder and connected with a discharge port at the bottom of a high-temperature carbon box 22 through a flange, a discharge port is formed below the other end of the cylinder and directly connected with an inlet of the high-temperature auger, and the device is in a fully-closed oxygen-free state.

The cooling mechanism 24 is a screw conveyer cooling device and can adopt a corresponding structure in CN 202010192055.2. The char collection apparatus includes a sorting apparatus 25 and a coarse metal magnetic separator 40. The sorting device 25, which is a screening machine, the coarse metal magnetic separator 40, which is a vortex magnetic separator, and the screening machine and the metal magnetic separator can adopt corresponding structures in CN 202010192055.2.

The sewage treatment device comprises: a pretreatment device, a DTRO disc tube type treatment device, a degassing tower, a reverse osmosis system and the like.

The pretreatment device comprises: a sewage collecting tank 43, a sewage pretreatment tank 44, an activated carbon adsorption purification tank 45, a carbon filtering device 46 and the like. The device sends into sewage pretreatment pond 44 with sewage pump in the sewage collecting pit 43 and carries out the preliminary treatment with the special use medicine of sewage with the medicine, get into activated carbon adsorption purification tank 45 behind the sewage preliminary treatment, then filter through carbon filter 46, the concentrate 51 of filtering out directly sends into the schizolysis reation kettle and carries out the schizolysis processing, send into activated carbon purification processing through the sewage after filtering, put into the activated carbon of certain proportion in the pond and stir purification processing back again and filter through activated carbon adsorption purification tank 45, then purify the sewage after considering by the water pump and directly get into next-level DTRO dish tubular treatment device 47. The DTRO disc line treatment unit 47 and the reverse osmosis unit 49 may be of the corresponding construction of CN 202010192055.2.

The control cabinet is formed by assembling switch equipment, measuring instruments, protective electrical appliances and auxiliary equipment in a closed or semi-closed metal cabinet according to the wiring requirements of the electrical appliances, and the arrangement of the control cabinet meets the requirements of normal operation of an electric power system, so that the control cabinet is convenient to overhaul and does not endanger the safety of people and surrounding equipment. When the circuit is normally operated, the circuit can be switched on or switched off by a manual or automatic switch, and when the circuit is in fault or abnormal operation, the circuit is switched off or alarmed by a protective electric appliance. The measuring instrument is used for displaying various parameters in operation, some electrical appliance parameters can be adjusted, the deviation from the normal working state is prompted or a signal is sent, and the control cabinet is mainly used for adjusting and protecting the equipment operation of the device.

The automatic control device is composed of a controlled object and a control device. The control device basically comprises: the device comprises a measuring device, a given link, a comparison link, an amplification link, an actuating mechanism, a correcting device and the like. The control method comprises the following steps: open-loop control systems, closed-loop control systems, and compound control systems. According to the characteristics of the input signal: constant value control system, follow-up system, program control system. According to the system characteristics: the system comprises a continuous system, a discrete system, a fixed system, a time-varying system, a linear system and a nonlinear system, wherein the linear system has superposition and homogeneity, and the automatic control principle mainly splits the linear fixed system.

The process for treating the household garbage by using the low-temperature anaerobic cracking treatment device for the household garbage comprises the following steps:

(1) crushing and crushing the household garbage by using a household garbage pretreatment device;

the domestic waste is sent into domestic waste preliminary treatment workshop by special-purpose vehicle for the special messenger after collecting, send into domestic waste collecting pit 1 after weighing, measure the registration warehouse entry, pile up the waiting for the processing temporarily, domestic waste grabs into 3 feed inlets of one-level breaker by first material machine 2 of grabbing after getting into the preliminary treatment workshop domestic waste and crushes, breaker feed inlet top sets up by dust and waste gas collection mouth, inhale the tuber pipe by draught fan 7 through the tuber pipe inlet scoop dust waste gas then send into exhaust treatment device 30 again and carry out dust removal purification and handle the back and discharge up to standard. The broken domestic waste discharges from 3 bottom discharge gates of one-level breaker and gets into band conveyer 4 hopper again, then sends into the domestic waste after the breakage by band conveyer 4 and carries out breakage or smashes in the 6 feed inlets of second grade breaker, directly gets into spiral wringing machine 8 after the breaker breakage reaches required requirement, and the water of extruding flows into the catch basin through the pipeline and sends into the sewage collecting pit through the sewage pump through the pipeline again, discharges up to standard after being handled by sewage treatment plant. The household garbage after being squeezed is sent into a crushed material storage bin by a belt conveyor 4 to be temporarily stored and stacked for waiting for treatment.

(2) Heating the cracking reaction device to make the temperature of the cracking reaction device reach more than 300 ℃;

the nitrogen making machine is adopted to charge nitrogen into the drying device 13 and the cracking reaction device to exhaust oxygen in the drying device 13 and the cracking reaction device outwards, then the heating device 20 is started to start the cracking reaction device, the heating device 20 is started, and the heating device 20 can be started to start the initial starting by using outsourcing liquefied gas or using combustible gas stored in the gas storage bag 35 in the early stage and then the combustible gas is sent into the heating device 20 through a gas pipeline. The gas valve, the oxygen valve and the regulating valve 79 are opened by the heating device 20, then the burner is ignited by the electronic automatic ignition device, the burners arranged at two sides of the combustion chamber 77 heat the inner cylinder of the first cracking reaction kettle 16 in the combustion chamber 77 through the burner nozzles 78, hot air generated by combustion and heating of the burner enters the spiral air duct of the cracking kettle interlayer 61 to heat and heat the inner cylinder of the reaction kettle from bottom to top, the cracking process is initialized in the early stage by firstly slowly heating to ensure that the cracking reaction kettle slowly deforms after being heated, about 3 hours is needed, and when the temperature rises to 300 ℃, the second material grabbing machine 10, the belt electronic scale 11, the first spiral extrusion feeder 12, the drying device 13 and the cracking treatment device are started to feed materials slowly.

(3) The household garbage pretreatment device dries the household garbage through a drying device 13;

after the cracking reaction device is heated by preliminary preheating and heating, when the temperature in the cracking reaction kettle is raised to about 300 ℃, the second material grabbing machine 10, the belt electronic scale 11, the belt conveyor 4 and the first screw extrusion feeder 12 are simultaneously started, drying device 13, second screw extrusion batcher 15, high temperature auger conveyor or bucket elevator, relevant equipment such as schizolysis processing apparatus, begin the slow feeding, grab the domestic waste that stores in the storage storehouse after the domestic waste preliminary treatment and grab belt electronic scale 11 hopper in by second material grabbing machine 10 and measure, the domestic waste after the measurement of weighing is sent into first screw extrusion batcher 12 feed inlet through band conveyer by belt electronic scale 11, domestic waste gets into after the extrusion of first screw extrusion batcher 12 even feed and is sent into drying device 13's stoving outer barrel 52 feed inlet and carry out drying process. The temperature of the cooling inner cylinder 53 of the drying device 13 is about 500 ℃ by utilizing the high-temperature carbon discharged by the first cracking reaction kettle 16, the high-temperature dry carbon is sent into the inner cylinder of the drying device 13 or the cooling auger 57 to slowly pass through the high-temperature carbon box 22 by the high-temperature carbon discharging auger 23, and the high-temperature carbon guides the waste heat into the interlayer outer cylinder through the inner cylinder to dry the household garbage. An interlayer hot air inlet 74 is arranged below the feed inlet of the outer barrel of the drying device 13, and the interlayer hot air outlet 65 above the fourth cracking reaction kettle 19 is sent into the outer barrel of the drying device 13 by a draught fan 7 through a pipeline to dry the domestic garbage. The household garbage enters the drying cylinder and slowly passes through the drying cylinder along with the rotation of the cylinder under the action of the outer cylinder guide plate 54, the dried household garbage is discharged from the discharge port at the tail part of the outer cylinder and enters the high-temperature conveying auger 21 to be conveyed into the feed port of the second screw extrusion feeder 15, the dried household garbage is extruded by the second screw extrusion feeder 15 and then directly enters the fourth cracking reaction kettle 19, and the second screw extrusion feeder 15 has the functions of material sealing, sealing and uniform feeding. The drying and staying time of the household garbage is 30-40 minutes. The dry carbon after heat exchange cooling is discharged from a discharge port at the tail part of the inner cylinder body or the cooling auger 57 and enters the auger cooling device for cooling treatment, the dried tail gas is discharged from a tail gas outlet above one end of the drying device 13, the discharged tail gas is sent into the waste gas treatment device 30 by the high-temperature induced draft fan 7 through a pipeline and is discharged after treatment and purification, and the whole waste heat drying process is carried out in a fully-closed state.

(4) And the household garbage is sent into a cracking reaction device for cracking, and cracked gas generated by the cracking reaction device enters a cracked gas treatment device for collection and treatment.

After being dried by the drying device 13, the domestic garbage is extruded by the second screw extrusion feeder 15 for secondary sealing and oxygen isolation and then is directly sent into the fourth cracking reaction kettle 19. The initialization carries out the ladder heating to the schizolysis reation kettle, and equipment heating normal schizolysis temperature is 500 ~ 600 ℃ to first schizolysis reation kettle 16 heating temperature, and the material dwell time in the cauldron is 2.5 ~ 3 hours, and the rotational speed of hollow shaft 62 and paddle in the cauldron is 1 ~ 10 revolutions per minute. The heating temperature of the 17 ladders of the second cracking reaction kettle is 400 ℃ -500 ℃, the residence time of the materials in the kettle is longer than 2-2.5 hours, and the rotating speed of the hollow shaft 62 and the blades in the kettle is 1-10 revolutions per minute. The heating temperature of the third cracking reaction kettle is 250-400 ℃, the residence time of the materials in the kettle is 1.5-2 hours, and the rotating speed of the hollow shaft 62 and the rotating speed of the blades in the kettle are 1-10 revolutions per minute. The 19 ladder heating temperatures of the fourth cleavage reaction kettle are 150 ℃ -250 ℃, the residence time of the materials in the kettle is longer than 1-1.5 hours, and the rotating speeds of the hollow shaft 62 and the blades in the kettle are 1-10 revolutions per minute. The material is continuously fed by a screw extruder, so that the cracking reaction kettle can continuously and normally operate in a closed oxygen-free state, and the material is completely cracked. After the domestic garbage is completely cracked and carbonized, the domestic garbage is discharged from a carbon outlet of the first cracking reaction kettle 16 and directly enters a high-temperature carbon box 22, and the high-temperature carbon waste heat is used for drying the domestic garbage by the drying device 13.

Heating device 20 has been installed to first cracking reaction cauldron 16 bottom setting, the heating method can adopt to fire burning furnace direct heating mode and external heating mode (hot-blast furnace heating), 1, fire burning furnace direct heating mode is by the combustion chamber 77 that first cracking reaction cauldron 16 bottom set up the installation, install combustor and nozzle in combustion chamber 77 both sides, still install automatic ignition device and governing valve 79 in the combustion chamber 77, the first try heating can adopt purchase liquefied gas and store the combustible gas in the gas bag in earlier stage, allocate the optimum proportion by gas pipe and oxygen hose through governing valve 79 and get into the combustor, open automatic ignition device and ignite the back and heat barrel in first cracking reaction cauldron 16 through the nozzle. 2. The external heating mode (hot-blast stove heating) is characterized in that a burner, a nozzle, an adjusting valve and an automatic ignition device are arranged in the hot-blast stove of the external auxiliary heating device. The initial heating can purchase liquefied gas and earlier stage store in the gas of gas bag in addition, allot the optimum proportion by gas pipe and oxygen hose through the governing valve and get into the combustor, opens automatic ignition and lights the back and pass through the nozzle to the burning in the stove when the hot-blast furnace temperature reaches more than 800 degrees and get into first cracking reaction cauldron one end below external heating steam air inlet 73 by the high temperature draught fan through the hot-blast main and heat the internal barrel from bottom to top in the cauldron.

Dust and waste gas generated in the pretreatment process of the domestic garbage pretreatment workshop are collected by the air suction inlet and then sent into the waste gas treatment device 30 through the draught fan 7 and the hot blast pipe for treatment and purification, and then are discharged after reaching the standard. The barrel in the cracking reaction kettle is heated by the heating device 20, the barrel interlayers of the cracking reaction kettle are connected and communicated, heating hot air enters the barrel interlayer spiral air duct from the combustion chamber 77 at the bottom of the first cracking reaction kettle 16 and heats the cracking reaction kettle along the air duct from bottom to top to supply materials in the kettle to undergo cracking treatment, the interlayer hot air is discharged from the interlayer hot air outlet 65 at one end above the fourth cracking reaction kettle along the air duct, the discharged interlayer hot air is sent into the interlayer hot air inlet 74 at one end above the drying device 13 through the high-temperature draught fan 7 through the pipeline, the hot air enters the drying device 13 to dry the materials, the hot air enters the barrel and is pushed forward along the advancing direction of the materials, and then the hot air is discharged from the tail gas outlet above one end of the waste heat drying device. After being discharged, the tail gas is sent into a waste gas treatment device 30 by a high-temperature induced draft fan 7 through a pipeline for treatment and purification, and then is discharged after reaching the standard.

After entering the cracking reaction kettle, the household garbage is cracked under a low-temperature oxygen-free closed state, combustible gas generated after the high-temperature cracking of materials is discharged from a cracked gas outlet above one end of a fourth cracking reaction kettle 19, the cracked gas enters a cracked gas treatment device through a pipeline downstream after being discharged, the cracked gas firstly enters a three-phase separator 26, when the cracked gas enters the three-phase separator 26, heavy cracked oil (tar) starts to crystallize and solidify under the condition that the temperature in the three-phase separator 26 is controlled to be about 200 ℃, the tar is convenient to collect, the heavy cracked oil (tar) and light oil are separated through a gas-liquid separator, and the heavy cracked oil (tar) and the light oil are respectively sent to a heavy oil storage tank 31 and a light oil storage tank 32 through pipelines. The separated water is sent to an oil-water separator 29 through a pipeline, the separated gas directly enters a condenser 27 through the pipeline, after the cracked gas enters the condenser 27, the temperature in the condenser 27 is controlled to be about 80 ℃, oil and vapor in the cracked gas start to crystallize and solidify, heavy cracked oil (tar) and light oil separated after the gas is cooled by the condenser 27 are respectively sent to a heavy oil storage tank 31 and a light oil storage tank 32 through pipelines, the water discharged after the condensation treatment is directly sent to the oil-water separator 29 through the pipeline for separation, the cracked gas discharged after the condensation treatment enters a gas-liquid separator 28, the temperature in the gas-liquid separator 28 is controlled to be below 80 ℃, the oil and the vapor in the cracked gas start to crystallize and solidify, the heavy cracked oil (tar) and the light oil are separated through the gas-liquid separator 28 and are respectively sent to an oil storage tank through the pipelines, the separated water is sent into an oil-water separator 29 through a pipeline for separation, the combustible gas separated from the pyrolysis gas through a gas-liquid separator 28 is sent into a desulfurization and dechlorination device 33 through a pipeline for treatment and purification, and then is sent into a gas storage bag 35 through a pipeline for use, so that the combustible gas can be used for power generation of a gas generator 36. The water separated from the gas and liquid is sent to an oil-water separator 29 through a pipeline for separation, the separated heavy pyrolysis oil (tar) and light oil are respectively sent to a heavy oil storage tank 31 and a light oil storage tank 32 through pipelines, and the separated water is sent to a water circulation tank through a pipeline for recycling.

The charcoal is discharged from a charcoal outlet at one end below the first cracking reaction kettle 16, the charcoal directly enters the high-temperature charcoal box 22 after being discharged, the temperature outside the charcoal discharge kettle is about 500 ℃, and a temperature and pressure sensor is installed above the high-temperature charcoal box 22, so that the real-time temperature and pressure in the high-temperature charcoal box 22 are transmitted to a central control room for the reference of a worker to be regulated and controlled at any time. The bottom of the charcoal box is provided with a charcoal outlet auger, after entering the charcoal box, the charcoal is conveyed into the drying device 13 by the charcoal outlet auger through a high-temperature auger conveyor, and the high-temperature charcoal enters the inner cylinder or the high-temperature auger conducts heat through the inner cylinder or the interlayer of the high-temperature auger cylinder to guide the residual heat of the charcoal into the outer drying cylinder 52 for drying the material. The carbon dried by waste heat is sent into an auger cooling device by a high-temperature auger, the auger cooling device is designed to be composed of two concentric cylinders with different diameters, the carbon is pushed forwards by an auger shaft and an auger sheet in an inner cylinder, a spiral water channel is designed in an interlayer between an outer cylinder and an inner cylinder, water in a water storage tank is sent into a water inlet above one end of the auger cooling device through a pipeline, the water is sent into the spiral water channel in the interlayer between the outer cylinder and the inner cylinder, the water cools the high-temperature carbon in the inner cylinder along the spiral water channel and then is discharged from a water outlet at the tail part of the auger cooling device, the discharged hot water is sent into a cooling tower by a water pump through a pipeline to be cooled, and the water cooled by the cooling tower is sent back to the water storage tank through a pipeline to be recycled. The carbon is cooled by the auger cooling device, and the carbon discharge temperature is below 80 ℃. The carbon is discharged from the auger cooling device and then is directly sent into a feed inlet of a totally-enclosed screening machine. The carbon enters a screening machine to screen the carbon, and the screened carbon is discharged from a carbon outlet at the bottom of the screening machine and directly enters a hopper of an auger conveyor and is directly conveyed to a carbon warehouse by the auger conveyor to be stored and stacked. The carbon slag after screening is discharged from a carbon slag outlet at the tail part of the screening machine, the carbon slag is sent into a vortex metal magnetic separator by a belt conveyor 4 to separate out nonferrous metals in the carbon slag, the separated nonferrous metals are directly sent into a nonferrous metal warehouse 41 by the belt conveyor 4, and the carbon slag after separation is directly sent into a carbon slag warehouse 42 by the belt conveyor 4.

All sewage generated in the cracking process of the domestic garbage is collected in the sewage collecting tank 43 for uniform treatment, the sewage in the sewage collecting tank 43 is sent into the sewage pre-treatment tank 44 by the sewage pump, the produced active carbon is adopted in the sewage pretreatment tank 44 for stirring, adsorption and sending the carbon residue filtered by the filter into a cracking reaction kettle for cracking treatment, then the pretreated liquid enters into the uppermost DTRO after simple treatment of a sand filter, a filter and the like, the permeate liquid generated after the first-stage DTRO treatment enters into the second-stage DTRO for further treatment, the first-stage DTRO concentrated solution is discharged into a concentrated solution storage pool to wait for returning to a tank for treatment, the permeate liquid after the second-stage DTRO treatment enters into a degassing tower for treatment and then is discharged after reaching the standard, the second-stage concentrated solution returns to the first-stage DTRO for combination and continuous circulation treatment, and the treated concentrated solution 51 can also be sent into a cracking reaction kettle to be subjected to low-temperature anaerobic cracking treatment together with household garbage.

The whole domestic garbage cracking treatment process comprises domestic garbage pretreatment, a drying device 13, a screw extrusion feeder, a cracking reaction device, a heating device 20, a cracking gas treatment device, a carbon outlet device, a sewage treatment device, a collection and storage device and the like, linkage programming is carried out, and data and information collected in the operation process through the linkage programming are all collected and transmitted to be collected and stored in a central processing unit of a central control center, wherein the data and the information include related parameters such as weighing quantity, feeding speed, temperature, pressure, flow and air pollution degree in a cracking reaction kettle. The staff carries out analysis according to the collected data and information, and the domestic garbage can be accurately, real-timely and flexibly cracked completely under the low-temperature and anaerobic condition.

Example 2

Referring to fig. 9, the heat exchanging mechanism 14 in this embodiment may also be a cooling auger 57 disposed inside the drying outer cylinder 52. The drying device 13 is a circular single-cylinder drying outer cylinder 52, a cooling auger 57 is arranged in the middle position in the drying outer cylinder 52, high-temperature domestic garbage is input by a high-temperature charcoal discharging auger 23, an auger piece is driven by the rotation of a transmission device linkage shaft of the cooling auger 57 to rotate, roll, dissipate heat and push forwards until a discharge port of the high-temperature auger is discharged, and then the cylinder of the cooling auger 57 conducts heat indirectly to transmit the heat into the drying outer cylinder 52 for drying materials. The material enters from the feeding hole of the drying outer cylinder 52 and rotates along with the cylinder, the material rolls in the drying outer cylinder 52, and the material is rolled and pushed forward by the outer cylinder material guide plate 54 and the outer cylinder material lifting plate arranged on the inner wall of the drying cylinder until the dried material is discharged from the discharging hole of the drying outer cylinder 52. Sealing devices 68 are arranged at two ends of the outer drying cylinder 52, and material inlets and material outlets at two ends of the outer drying cylinder 52 are fixed and do not rotate, so that the cylinder is ensured to be dried in a sealed state. The household garbage charcoal with high-temperature waste heat directly enters the high-temperature auger barrel to dissipate heat, the interlayer conducts heat to dry materials, the heat conduction effect is good, the heat utilization rate is high, the material drying time is short, the speed is high, the yield is high, and the cost is reduced. The waste heat conversion technology is utilized to reduce the heat of the household garbage by inputting a large amount of equipment and consuming a large amount of energy, and the waste heat is utilized to directly convert the waste heat into heat energy for drying the materials, so that the energy is greatly saved, the energy consumption is reduced, the emission is reduced, and the cost is reduced.

The other structures of the embodiment adopt the same technical scheme as that of the embodiment 1.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a domestic waste low temperature anaerobic cracking processing apparatus which characterized in that: domestic waste low temperature anaerobic cracking processing apparatus include domestic waste preprocessing device, drying device (13), schizolysis reaction unit and schizolysis gas treatment device, domestic waste preprocessing device connects the feed inlet of drying device (13) through first screw extrusion batcher (12), the domestic waste feed inlet that schizolysis reaction unit is connected through second screw extrusion batcher (15) to the discharge gate of drying device (13), schizolysis reaction unit's domestic waste discharge gate passes through heat transfer mechanism (14) and connects the charcoal collection device, heat transfer mechanism (14) and drying device (13) overlap each other and establish, schizolysis gas treatment device is connected to schizolysis reaction unit's schizolysis gas outlet (64), domestic waste preprocessing device, first screw extrusion batcher (12), schizolysis gas treatment device's outlet connection has sewage treatment device.

2. The low-temperature anaerobic cracking treatment device for household garbage according to claim 1, which is characterized in that: the drying device (13) is a rotatably arranged drying outer cylinder (52), an outer cylinder guide plate (54) for pushing the materials to move axially is arranged in the drying outer cylinder (52), and the heat exchange mechanism is arranged on the inner side of the drying outer cylinder (52) in a penetrating mode.

3. The low-temperature anaerobic cracking treatment device for household garbage according to claim 2, characterized in that: the heat exchange mechanism (14) is a cooling inner cylinder (53) arranged on the inner side of the drying outer cylinder (52), the cooling inner cylinder (53) is fixedly connected with the drying outer cylinder (52), and an inner cylinder guide plate (56) for pushing materials to move axially is arranged in the cooling inner cylinder (53).

4. The low-temperature anaerobic cracking treatment device for household garbage according to claim 2, characterized in that: the heat exchange mechanism (14) is a cooling packing auger (57) arranged on the inner side of the drying outer cylinder body (52).

5. The low-temperature anaerobic cracking treatment device for the household garbage according to any one of claims 1 to 4, characterized in that: the heat exchange mechanism (14) is connected with the carbon collecting device through a cooling mechanism (24).

6. The low-temperature anaerobic cracking treatment device for household garbage according to claim 1, which is characterized in that: the domestic garbage pretreatment device is arranged in a closed pretreatment workshop, and the pretreatment workshop is connected with a waste gas treatment device (30) through an induced draft fan (7).

7. The low-temperature anaerobic cracking treatment device for household garbage according to claim 1, which is characterized in that: and a concentrated solution outlet of the sewage treatment device is connected with a feed inlet of the cracking reaction device.

8. The low-temperature anaerobic cracking treatment device for household garbage according to claim 1, which is characterized in that: the cracking reaction device comprises a plurality of cracking reaction kettles, the barrels of the cracking reaction kettles are concentric horizontal double-layer double-barrel hollow cylinders consisting of two cylinders with different diameters, the outer barrels of adjacent cracking reaction kettles are connected and communicated with the outer barrels, the inner barrels are connected and communicated with the inner barrels, the cracking reaction kettles are connected with one another from top to bottom and connected in series, the cracking reaction kettle at the bottom is connected with a heating device (20), a drying device (13) is communicated with the inner barrel of the cracking reaction kettle at the top through a screw auger conveyor and a second screw extrusion feeder (15), two ends of the barrel of each cracking reaction kettle are sealed through end sockets, and waveform metal expansion joints (67) are arranged between the adjacent cracking reaction kettles and between the barrel and the end sockets of each cracking reaction kettle.