CN115612516A - Chain-propelled high-temperature anaerobic pyrolysis method for oily hazardous wastes - Google Patents
Chain-propelled high-temperature anaerobic pyrolysis method for oily hazardous wastes Download PDFInfo
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- 239000002920 hazardous waste Substances 0.000 title claims abstract description 134
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 53
- 239000002893 slag Substances 0.000 claims abstract description 120
- 239000000428 dust Substances 0.000 claims abstract description 78
- 238000007599 discharging Methods 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000002912 waste gas Substances 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 230000003197 catalytic effect Effects 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 238000001179 sorption measurement Methods 0.000 claims abstract description 11
- 238000009413 insulation Methods 0.000 claims abstract description 8
- 238000002485 combustion reaction Methods 0.000 claims abstract description 4
- 239000002699 waste material Substances 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 13
- 239000010410 layer Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 238000007670 refining Methods 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000011241 protective layer Substances 0.000 claims description 5
- 239000010913 used oil Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 53
- 239000000463 material Substances 0.000 description 9
- 238000001035 drying Methods 0.000 description 8
- 239000004566 building material Substances 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 241000607479 Yersinia pestis Species 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000007728 cost analysis Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 206010035148 Plague Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 239000002906 medical waste Substances 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/002—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal in combination with oil conversion- or refining processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
- B01J6/008—Pyrolysis reactions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
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- C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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Abstract
The invention discloses a high-temperature oxygen-free pyrolysis method for chain-propelled oily hazardous waste, which relates to a treatment method for oily hazardous waste, and comprises the following process flows: a. path of dry slag: oily hazardous waste → a feeding funnel → a feeding hole → a chain type pyrolysis device → a discharging hole → a dry slag buffer tank → a dry slag discharging auger → a dry slag outlet; b. and (3) extracting the path of oil: oil-containing hazardous waste → feed funnel → feed inlet → chain pyrolysis device → primary gas-dust separator → secondary gas-dust separator → condenser → oil-water separator is used oil → liquid storage tank → reaction kettle → adsorption tower → catalytic tower → rectification tower → semi-finished oil; c. an exhaust gas treatment path: waste gas of the oil-water separator → a vacuum tank → a vacuum pump → a buffer tank → a fire insulation tank → a combustion furnace → a primary dust remover → a secondary dust remover → a chimney. The invention has the advantages of high treatment speed, low treatment cost, oil content of dry residue less than 3 per mill, remarkably improved treatment quality, remarkable technical and economic benefits and popularization value.
Description
Technical Field
The invention relates to a method for treating oily hazardous waste, in particular to a method for chain-propelled high-temperature anaerobic pyrolysis of oily hazardous waste.
Background
Among the hazardous wastes, there are many waste oils, sludge containing waste liquids, oil residues, sludge, wastes, slurries, which are not only in large quantities but also very difficult to handle and expensive to handle. In the past, the oily hazardous waste is mainly treated by squeezing, burning and landfill methods, the squeezing treatment method has high oil content, the burning treatment method has low oil content, but the smoke and the fly ash are large, the secondary pollution is heavy, and the oil resource can not be recovered; the landfill treatment method needs to occupy a large amount of land, pollutes the surrounding environment and leaves a great hidden danger. At present, the oily hazardous waste is mainly treated by a sealed rotary drying oven, one set of sealed rotary drying oven is used, the investment is 150 ten thousand yuan, five tons of oily hazardous waste are treated in three days, the average cost for treating one ton of hazardous waste is 917.4 yuan/ton, the time for treating one ton of hazardous waste is 72 hours, the time for treating five tons of hazardous waste is 72 hours, waste oil can be collected only after treatment, and waste gas is discharged to the air; the oil content in the treated dry slag is more than 2 percent and is far higher than the requirement of GB4284-2018 agricultural sludge pollutant control standard, the dry slag cannot return to cultivated land, cannot be directly discharged, and is difficult to be used as building materials. In order to improve the technical level of treatment of the oily hazardous waste, obviously reduce the oil content of the dry slag after the oily hazardous waste is treated, obviously reduce the treatment cost of the oily hazardous waste and obviously improve the treatment speed, a chain-propelled oily hazardous waste high-temperature anaerobic pyrolysis method needs to be explored.
Disclosure of Invention
The invention aims to provide a method for chain-propelled high-temperature anaerobic pyrolysis of oily hazardous wastes.
The technical scheme of the invention is as follows: a chain-propelled high-temperature anaerobic pyrolysis method for oily hazardous wastes is characterized by comprising the following process flows:
a. a path for changing oily hazardous waste into dry slag through high-temperature anaerobic pyrolysis: the oil-containing hazardous waste → a feeding funnel → a feeding hole → a chain type pyrolysis device → a discharging hole → a dry slag buffer tank → a dry slag discharging auger → a dry slag outlet;
b. the oil-containing hazardous waste high-temperature anaerobic pyrolysis refining route comprises the following steps: oil-containing hazardous waste → feed funnel → feed inlet → chain pyrolysis device → primary gas-dust separator → secondary gas-dust separator → condenser → oil-water separator is used oil → liquid storage tank → reaction kettle → adsorption tower → catalytic tower → rectification tower → semi-finished oil;
c. the waste gas treatment path of the high-temperature anaerobic pyrolysis of the oily hazardous waste comprises the following steps: waste gas of the oil-water separator → a vacuum tank → a vacuum pump → a buffer tank → a fire insulation tank → a combustion furnace → a primary dust collector → a secondary dust collector → a chimney.
Preferably, the method for the high-temperature anaerobic pyrolysis of the oil-containing hazardous waste by chain propulsion comprises the steps of arranging a chain type pyrolysis device on a frame, arranging a cuboid shell on the chain type pyrolysis device, arranging end covers at two ends of the shell, arranging a feeding conveyor at the front part of the upper surface of the shell, arranging a feeding port on the feeding conveyor, arranging a safety valve and a first-stage gas-dust separator in the middle of the upper surface of the shell, arranging a discharging port at the rear part of the lower surface of the shell, connecting a dry slag buffer tank on the discharging port, connecting a dry slag discharging auger on the dry slag buffer tank, arranging a dry slag outlet on the dry slag discharging auger, arranging an inner chain and an outer chain in the shell, arranging an inner chain scraper on the inner chain, arranging an outer chain scraper on the outer chain, arranging an inner chain driving shaft assembly and an inner chain driven shaft assembly outside the side surface of the shell, interior chain driving shaft assembly drives interior chain clockwise rotation or anticlockwise rotation, is equipped with outer chain driving shaft assembly and outer chain driven shaft assembly outside the casing side, and outer chain driving shaft assembly drives outer chain anticlockwise rotation, and outer chain scraper blade scrapes hazardous waste from the front portion of furnace casing to the rear portion, and interior chain scraper blade is scraped hazardous waste and is leveled off, is equipped with the heater below the casing, has the dust storage tank at second grade gas-dust separator's sub-unit connection, the casing make by high temperature resistant magnetic conduction steel, is equipped with insulating layer, heater, outer protective layer from inside to outside in proper order below the casing, the heater be solenoid heater, the heating temperature of heater can be adjusted at 100 ~ 1000 ℃ of the within range.
The chain type pyrolysis device is arranged on a frame, the chain type pyrolysis device is provided with a cuboid shell, end covers are arranged at two ends of the shell, a feeding conveyor is arranged at the front part of the upper surface of the shell, a feeding port is arranged on the feeding conveyor, a safety valve and a primary gas-dust separator are arranged in the middle of the upper surface of the shell, a discharging port is arranged at the rear part of the lower surface of the shell, a dry slag cache tank is connected onto the discharging port, a dry slag discharging auger is connected onto the dry slag cache tank, a dry slag outlet is arranged on the dry slag discharging auger, an inner chain and an outer chain are arranged in the shell, an inner chain scraper is arranged on the inner chain, an outer chain scraper is arranged on the outer chain, an inner chain driving shaft assembly and an inner chain driven shaft assembly are arranged outside the shell, the inner chain driving shaft assembly drives the inner chain to rotate clockwise or anticlockwise, an outer chain driven shaft assembly and an outer chain driven shaft assembly are arranged on the side surface of the shell, the outer chain assembly drives the outer chain scraper to rotate anticlockwise, the outer chain scraper scrapes hazardous waste from the front part of the shell to the rear part, a waste scraping chain is arranged outside the shell, a waste heating device, a secondary gas-dust-proof heater is arranged below the shell, and a protective layer is arranged below the heating device and can be used for heating steel material heater, and used for heating is arranged in a range of a secondary gas-resistant heater, and used for heating furnace shell.
According to the method for the high-temperature anaerobic pyrolysis of the oil-containing hazardous wastes by chain propulsion, the dry slag buffer tank is internally provided with the upper material level sensor and the lower material level sensor, the shell of the chain type pyrolysis device is internally provided with the temperature sensor, and the pipeline between the primary gas-dust separator and the secondary gas-dust separator is provided with the temperature sensor and the pressure sensor.
The working principle of the invention is as follows: oil-containing hazardous waste isolation air in the feeding hopper enters the shell from the feeding hole, dry slag isolation air in the dry slag buffer tank enters the shell from the discharging hole, the primary gas-dust separator works by adopting vacuum negative pressure, the isolation air enters the shell from the primary gas-dust separator, so that a working environment with high-temperature anaerobic pyrolysis negative pressure is formed in the shell, and the oil-containing hazardous waste is subjected to anaerobic pyrolysis in the shell after being heated by the heater and then is changed into gas and dry slag; the outer chain scraper on the outer chain continuously scrapes the heated hazardous waste from the front part to the rear part of the bottom plate of the shell, and the inner chain scraper on the inner chain continuously scrapes the hazardous waste exceeding the height of the lower part of the outer chain; the first-stage gas-dust separator and the second-stage gas-dust separator are used for gas-dust separation, dry slag is continuously discharged into the feed opening, when the dry slag in the dry slag buffer tank reaches the position of the upper level sensor, the dry slag discharge auger starts to discharge the dry slag, and when the dry slag reaches the position of the lower level sensor, the dry slag discharge auger stops discharging the dry slag. The oil in oily hazardous waste is passed through: the feed hopper → the feed inlet → the chain type pyrolysis device → the first-stage gas-dust separator → the second-stage gas-dust separator → the condenser → the oil-water separator becomes waste oil → the liquid storage tank → the reaction kettle → the adsorption tower → the catalytic tower → the rectifying tower → becomes semi-finished oil; the waste gas burning process in the oily hazardous waste is as follows: feed hopper → feed inlet → chain type pyrolysis device → primary air-dust separator → secondary air-dust separator → condenser → waste gas of oil-water separator → vacuum tank → vacuum pump → buffer tank → fire insulation tank → combustion furnace → primary dust remover → secondary dust remover → chimney.
The dry slag treated by the chain-propelled oily hazardous waste high-temperature oxygen-free pyrolysis method and the matched equipment comprises the following main components: the oil content of the dry slag is less than 3 per mill, the national emission requirement is met, most of the dry slag can be used for cultivated land, the dry slag can also be used as a raw material of building materials, and the dry slag can also be discharged as common waste slag.
The chain-propelled high-temperature anaerobic pyrolysis method for the oily hazardous waste can treat the hazardous waste, is particularly good at treating the oily hazardous waste, and can treat various waste residues such as combustible and non-combustible household garbage, industrial waste, sludge, plant diseases and insect pests, trees, medical waste, plague livestock and poultry and the like.
Cost analysis of the sealed rotary drying furnace for treating oily hazardous waste: in the past, oily hazardous waste mainly adopts sealed rotatory drying-oven to handle oily hazardous waste, and one set of sealed rotatory drying-oven invests 150 ten thousand yuan, and three days are handled oily hazardous waste five tons, consume the natural gas expense: 60 hours x8.3 cubic meters/hour 3.5 yuan/cubic meter =1743 yuan; electricity consumption fee: 60 hours 3 degrees/hour 0.8 yuan/degree =144 yuan; labor cost: 2 person/shift 3 shift/day 3 day 150 yuan/person =2700 yuan, the sealed rotary drying oven is used for treating five tons of oily dangerous waste, 1743+144+2700 =4587yuan is directly consumed, and 917.4 yuan/ton is required for treating one ton of oily dangerous waste on average; 72 hours are needed for treating one ton of oily hazardous waste, and 72 hours are needed for treating five tons of oily hazardous waste; meanwhile, the oil content of the dry slag treated by the sealed rotary drying furnace is up to 2%, the dry slag does not reach the national emission standard, the dry slag cannot be directly discharged and still belongs to dangerous waste, the dry slag is easy to coke on the inner wall of the sealed rotary drying furnace in the treatment, the labor intensity of the dry slag discharge is high, the waste oil evaporated by the sealed rotary drying furnace is heavy in carbon black, and the post-treatment is difficult.
The invention relates to a method for high-temperature anaerobic pyrolysis of oil-containing hazardous waste by chain propulsion and cost analysis of processing the oil-containing hazardous waste by matched equipment, which comprises the following steps: one set of chain promotes oily hazardous waste high temperature anaerobic pyrolysis equipment, total investment 156 ten thousand yuan, if, the chain promotes hazardous waste high temperature anaerobic pyrolysis processing system's casing and adopts the second grade to establish ties, installed power: 45kw + 2+1.5kw + 4=96kw, one eighteen tons of oily hazardous waste were treated one day, power consumption fee: 24 hours 96 degrees/hour 0.8 yuan/degree =1843 yuan; labor cost: 2 persons/shift 3 shifts/day 150 yuan/person =900 yuan, total, treat one eighteen tons of oily hazardous waste, direct total cost 1843+ 900=2743yuan, average treatment one ton of oily hazardous waste needs 2743 yuan/18 =152 yuan/ton; 1.34 hours for processing one ton of oily hazardous waste, and only 24 hours for processing eighteen tons of oily hazardous waste; meanwhile, the oil content of dry slag treated by the chain-propelled hazardous waste high-temperature anaerobic pyrolysis treatment system is less than 3 per thousand, the dry slag completely reaches the national discharge standard, most of the dry slag can be used for returning to farmland, the dry slag can also be used as a raw material of building materials, and the dry slag can also be discharged as common waste slag. In the high-temperature anaerobic pyrolysis treatment system for hazardous wastes propelled by the chain, dry slag is not coked on the bottom plate in the shell during treatment, and the labor intensity of workers is low.
The invention has the beneficial effects that: compared with the chain-propelled high-temperature anaerobic pyrolysis method for the oily hazardous waste, the method for treating the oily hazardous waste by the existing sealed rotary drying furnace comprises the following steps: the treatment speed is 10.8 times faster than that of the former, namely five tons of oily hazardous waste are treated in the former three days, and eighteen tons of oily hazardous waste are treated in the latter one day; the treatment cost is that the cost of treating one ton of oily hazardous waste is 917.4 yuan/ton, the cost of treating one ton of oily hazardous waste is 152 yuan/ton, and the treatment cost of the latter is only 16.6% of that of the former; the oil content of the treated dry residue is as high as more than 2 percent, the oil content of the dry residue of the treated dry residue is less than 3 per thousand, and the oil content of the dry residue of the treated dry residue is reduced by more than 6.7 times than that of the dry residue of the treated dry residue; the treatment quality is obviously improved, the dry slag after the treatment can not be directly discharged as waste slag, the dry slag after the treatment is allowed to be directly discharged, and the dry slag after the treatment can also be used as building material raw materials and can also be used for ploughing. The chain-propelled high-temperature anaerobic pyrolysis method for the oily hazardous waste is scientific and reasonable, the treatment technical level of the oily hazardous waste is obviously improved, the oil content in dry slag after the oily hazardous waste is treated is obviously reduced, the treatment cost of the oily hazardous waste is obviously reduced, the treatment speed is obviously improved, and the chain-propelled high-temperature anaerobic pyrolysis method for the oily hazardous waste has obvious technical and economic benefits and popularization value.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention;
FIG. 2 is a schematic perspective view of the apparatus of the present invention without a rectification system;
FIG. 3 is a schematic view of a chain pyrolysis apparatus according to the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3;
the mark in the figure is: the device comprises a feeding conveyor 1, a feeding hole 1a, a chain type pyrolysis device 2, a safety valve 2a, a primary gas-dust separator 2b, an outer chain driven shaft assembly 2c, an inner chain driving shaft assembly 2d, an inner chain driven shaft assembly 2e, an outer chain driving shaft assembly 2f, an inner chain 2g, an inner chain scraper 2g1, an outer chain 2h, an outer chain scraper 2h1, an outer protective layer 2i, a heater 2j, a heat insulation layer 2k, a feed opening 2l, a secondary gas-dust separator 3, a dust storage tank 4, a condenser 5, a vacuum tank 6, a vacuum pump 7, a liquid storage tank 8, an oil-water separator 9, a dry slag outlet 10, a dry slag discharging auger 11, a rack 12, a dry slag cache tank 13, a condensate water pump 14, a buffer tank 15, a fire insulation tank 16, a primary dust remover 18, a spray pump 19, a secondary dust remover 20, a chimney 21, a cooling water tank 22, a reaction kettle 23, an adsorption tower 24, a catalytic tower 25, a rectifying tower 26 and a feeding funnel 27.
Detailed Description
The present invention will be further illustrated by the following examples.
Example 1
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, a chain-propelled high-temperature anaerobic pyrolysis method for oily hazardous waste comprises the following process flows:
a. a path for changing oily hazardous waste into dry slag through high-temperature anaerobic pyrolysis: the oil-containing hazardous waste → the feeding funnel 27 → the feeding port 1a → the chain type pyrolysis device 2 → the discharging port 2l → the dry slag buffer tank 13 → the dry slag discharging auger 11 → the dry slag outlet 10;
b. the oil-containing hazardous waste high-temperature oxygen-free pyrolysis refining route: oily hazardous waste → a feed hopper 27 → a feed inlet 1a → a chain type pyrolysis apparatus 2 → a primary gas-dust separator 2b → a secondary gas-dust separator 3 → a condenser 5 → an oil-water separator 9 waste oil → a liquid storage tank 8 → a reaction vessel 23 → an adsorption column 24 → a catalytic column 25 → a rectification column 26 → semi-finished oil;
c. the waste gas treatment path of the high-temperature anaerobic pyrolysis of the oily hazardous waste comprises the following steps: the exhaust gas from the oil-water separator 9 → the vacuum tank 6 → the vacuum pump 7 → the surge tank 15 → the insulated tank 16 → the burner 17 → the primary duster 18 → the secondary duster 20 → the chimney 21.
Example 2
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, a chain-propelled high-temperature anaerobic pyrolysis method for oily hazardous wastes comprises the following process flows:
a. a path for changing oily hazardous waste into dry slag through high-temperature anaerobic pyrolysis: the oil-containing hazardous waste → the feeding funnel 27 → the feeding port 1a → the chain type pyrolysis device 2 → the discharging port 2l → the dry slag buffer tank 13 → the dry slag discharging auger 11 → the dry slag outlet 10;
b. the oil-containing hazardous waste high-temperature anaerobic pyrolysis refining route comprises the following steps: oily hazardous waste → a feed hopper 27 → a feed inlet 1a → a chain type pyrolysis apparatus 2 → a primary gas-dust separator 2b → a secondary gas-dust separator 3 → a condenser 5 → an oil-water separator 9 waste oil → a liquid storage tank 8 → a reaction vessel 23 → an adsorption column 24 → a catalytic column 25 → a rectification column 26 → semi-finished oil;
c. the waste gas treatment path of the high-temperature anaerobic pyrolysis of the oily hazardous waste comprises the following steps: the exhaust gas from the oil-water separator 9 → the vacuum tank 6 → the vacuum pump 7 → the surge tank 15 → the insulated tank 16 → the burner 17 → the primary duster 18 → the secondary duster 20 → the chimney 21.
The chain-propelled oily hazardous waste high-temperature anaerobic pyrolysis method is characterized in that a chain-type pyrolysis device 2 is arranged on a frame 12, the chain-type pyrolysis device 2 is provided with a cuboid shell, end covers are arranged at two ends of the shell, a feeding conveyor 1 is arranged at the front part of the upper surface of the shell, a feeding port 1a is arranged on the feeding conveyor 1, a safety valve 2a and a primary gas-dust separator 2b are arranged in the middle of the upper surface of the shell, a discharging port 2l is arranged at the rear part of the lower surface of the shell, a dry slag cache tank 13 is connected to the discharging port 2l, a dry slag discharge auger 11 is connected to the dry slag cache tank 13, a dry slag outlet 10 is arranged on the dry slag discharge auger 11, an inner chain 2g and an outer chain 2h are arranged in the shell, an inner chain scraper 2g1 is arranged on the inner chain 2g, an outer chain scraper 2h1 is arranged on the outer chain 2h, an inner chain assembly driving shaft 2d and an inner chain assembly 2e are arranged outside the side surface of a driven shaft, the inner chain driving shaft assembly 2d drives the inner chain 2g to rotate clockwise or anticlockwise, the outer chain driving shaft assembly 2f and the outer chain driven shaft assembly 2c are arranged outside the side face of the shell, the outer chain driving shaft assembly 2f drives the outer chain 2h to rotate anticlockwise, the outer chain scraper 2h1 scrapes hazardous waste from the front part to the rear part of the shell, the hazardous waste is scraped by the inner chain scraper 2g1, the heater 2j is arranged below the shell, the lower part of the secondary gas-dust separator 3 is connected with the dust storage tank 4, the shell is made of high-temperature-resistant magnetic conduction steel, the heat insulation layer 2k, the heater 2j and the outer protection layer 2i are sequentially arranged below the shell from inside to outside, the heater 2j is an electromagnetic coil heater, and the heating temperature of the heater 2j can be adjusted within the range of 100-1000 ℃.
Example 3
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, a chain-propelled high-temperature anaerobic pyrolysis method for oily hazardous waste comprises the following process flows:
a. the method comprises the following steps of (1) changing oily hazardous waste into dry slag through high-temperature anaerobic pyrolysis: oil-containing hazardous waste → a feeding funnel 27 → a feeding port 1a → a chain type pyrolysis device 2 → a discharging port 2l → a dry slag buffer tank 13 → a dry slag discharging auger 11 → a dry slag outlet 10;
b. the oil-containing hazardous waste high-temperature anaerobic pyrolysis refining route comprises the following steps: oily hazardous waste → a feed hopper 27 → a feed inlet 1a → a chain type pyrolysis apparatus 2 → a primary gas-dust separator 2b → a secondary gas-dust separator 3 → a condenser 5 → an oil-water separator 9 waste oil → a liquid storage tank 8 → a reaction vessel 23 → an adsorption column 24 → a catalytic column 25 → a rectification column 26 → semi-finished oil;
c. the waste gas treatment path of the high-temperature anaerobic pyrolysis of the oily hazardous waste comprises the following steps: the exhaust gas from the oil-water separator 9 → the vacuum tank 6 → the vacuum pump 7 → the surge tank 15 → the insulated tank 16 → the burner 17 → the primary duster 18 → the secondary duster 20 → the chimney 21.
The chain-propelled oily hazardous waste high-temperature anaerobic pyrolysis method comprises the steps that a chain-type pyrolysis device 2 is arranged on a frame 12, the chain-type pyrolysis device 2 is provided with a cuboid shell, end covers are arranged at two ends of the shell, a feeding conveyor 1 is arranged at the front part of the upper surface of the shell, a feeding port 1a is arranged on the feeding conveyor 1, a safety valve 2a and a primary gas-dust separator 2b are arranged in the middle of the upper surface of the shell, a discharging port 2l is arranged at the rear part of the lower surface of the shell, a dry slag cache tank 13 is connected to the discharging port 2l, a dry slag discharging auger 11 is connected to the dry slag cache tank 13, a dry slag outlet 10 is arranged on the dry slag discharging auger 11, an inner chain 2g and an outer chain 2h are arranged in the shell, an inner chain scraper 2g1 is arranged on the inner chain 2g, and an outer chain scraper 2h1 is arranged on the outer chain 2h, an inner chain driving shaft assembly 2d and an inner chain driven shaft assembly 2e are arranged outside the side face of the shell, the inner chain driving shaft assembly 2d drives an inner chain 2g to rotate clockwise or anticlockwise, an outer chain driving shaft assembly 2f and an outer chain driven shaft assembly 2c are arranged outside the side face of the shell, the outer chain driving shaft assembly 2f drives an outer chain 2h to rotate anticlockwise, an outer chain scraper 2h1 scrapes hazardous waste from the front to the rear of the shell, the inner chain scraper 2g1 scrapes the hazardous waste flat, a heater 2j is arranged below the shell, a dust storage tank 4 is connected to the lower portion of the secondary gas-dust separator 3, the shell is made of high-temperature resistant steel, a heater 2j and an outer protection layer 2i are sequentially arranged outside the shell from inside to outside, the heater 2j is an electric heating wire heater, and the heating temperature of the heater 2j can be adjusted within the range of 80-900 ℃.
Example 4
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, a chain-propelled high-temperature anaerobic pyrolysis method for oily hazardous waste comprises the following process flows:
a. a path for changing oily hazardous waste into dry slag through high-temperature anaerobic pyrolysis: oil-containing hazardous waste → a feeding funnel 27 → a feeding port 1a → a chain type pyrolysis device 2 → a discharging port 2l → a dry slag buffer tank 13 → a dry slag discharging auger 11 → a dry slag outlet 10;
b. the oil-containing hazardous waste high-temperature oxygen-free pyrolysis refining route: oily hazardous waste → a feed hopper 27 → a feed inlet 1a → a chain type pyrolysis apparatus 2 → a primary gas-dust separator 2b → a secondary gas-dust separator 3 → a condenser 5 → an oil-water separator 9 waste oil → a liquid storage tank 8 → a reaction vessel 23 → an adsorption column 24 → a catalytic column 25 → a rectification column 26 → semi-finished oil;
c. the waste gas treatment path of the high-temperature anaerobic pyrolysis of the oily hazardous waste comprises the following steps: the exhaust gas from the oil-water separator 9 → the vacuum tank 6 → the vacuum pump 7 → the surge tank 15 → the insulated tank 16 → the burner 17 → the primary duster 18 → the secondary duster 20 → the chimney 21.
According to the chain-propelled high-temperature anaerobic pyrolysis method for the oily hazardous wastes, an upper material level sensor and a lower material level sensor are arranged in a dry slag buffer tank 13, a temperature sensor is arranged in a shell of a chain type pyrolysis device 2, and a temperature sensor and a pressure sensor are arranged on a pipeline between a primary gas-dust separator 2b and a secondary gas-dust separator 3.
Example 5
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, a chain-propelled high-temperature anaerobic pyrolysis method for oily hazardous wastes comprises the following process flows:
a. a path for changing oily hazardous waste into dry slag through high-temperature anaerobic pyrolysis: oil-containing hazardous waste → a feeding funnel 27 → a feeding port 1a → a chain type pyrolysis device 2 → a discharging port 2l → a dry slag buffer tank 13 → a dry slag discharging auger 11 → a dry slag outlet 10;
b. the oil-containing hazardous waste high-temperature anaerobic pyrolysis refining route comprises the following steps: oily hazardous waste → a feed hopper 27 → a feed inlet 1a → a chain type pyrolysis apparatus 2 → a primary gas-dust separator 2b → a secondary gas-dust separator 3 → a condenser 5 → an oil-water separator 9 waste oil → a liquid storage tank 8 → a reaction vessel 23 → an adsorption column 24 → a catalytic column 25 → a rectification column 26 → semi-finished oil;
c. the waste gas treatment path of the high-temperature anaerobic pyrolysis of the oily hazardous waste comprises the following steps: the exhaust gas from the oil-water separator 9 → the vacuum tank 6 → the vacuum pump 7 → the surge tank 15 → the insulated tank 16 → the burner 17 → the primary duster 18 → the secondary duster 20 → the chimney 21.
The chain-propelled oily hazardous waste high-temperature anaerobic pyrolysis method is characterized in that a chain-type pyrolysis device 2 is arranged on a frame 12, the chain-type pyrolysis device 2 is provided with a cuboid shell, end covers are arranged at two ends of the shell, a feeding conveyor 1 is arranged at the front part of the upper surface of the shell, a feeding port 1a is arranged on the feeding conveyor 1, a safety valve 2a and a primary gas-dust separator 2b are arranged in the middle of the upper surface of the shell, a discharging port 2l is arranged at the rear part of the lower surface of the shell, a dry slag cache tank 13 is connected to the discharging port 2l, a dry slag discharge auger 11 is connected to the dry slag cache tank 13, a dry slag outlet 10 is arranged on the dry slag discharge auger 11, an inner chain 2g and an outer chain 2h are arranged in the shell, an inner chain scraper 2g1 is arranged on the inner chain 2g, an outer chain scraper 2h1 is arranged on the outer chain 2h, an inner chain assembly driving shaft 2d and an inner chain assembly 2e are arranged outside the side surface of a driven shaft, the inner chain driving shaft assembly 2d drives the inner chain 2g to rotate clockwise or anticlockwise, the outer chain driving shaft assembly 2f and the outer chain driven shaft assembly 2c are arranged outside the side face of the shell, the outer chain driving shaft assembly 2f drives the outer chain 2h to rotate anticlockwise, the outer chain scraper 2h1 scrapes hazardous waste from the front part to the rear part of the shell, the hazardous waste is scraped by the inner chain scraper 2g1, the heater 2j is arranged below the shell, the lower part of the secondary gas-dust separator 3 is connected with the dust storage tank 4, the shell is made of high-temperature-resistant magnetic conduction steel, the heat insulation layer 2k, the heater 2j and the outer protection layer 2i are sequentially arranged below the shell from inside to outside, the heater 2j is an electromagnetic coil heater, and the heating temperature of the heater 2j can be adjusted within the range of 100-1000 ℃. According to the chain-propelled high-temperature anaerobic pyrolysis method for the oily hazardous wastes, an upper material level sensor and a lower material level sensor are arranged in a dry slag buffer tank 13, a temperature sensor is arranged in a shell of a chain type pyrolysis device 2, and a temperature sensor and a pressure sensor are arranged on a pipeline between a primary gas-dust separator 2b and a secondary gas-dust separator 3.
Example 6
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, a chain-propelled high-temperature anaerobic pyrolysis method for oily hazardous waste comprises the following process flows:
a. a path for changing oily hazardous waste into dry slag through high-temperature anaerobic pyrolysis: oil-containing hazardous waste → a feeding funnel 27 → a feeding port 1a → a chain type pyrolysis device 2 → a discharging port 2l → a dry slag buffer tank 13 → a dry slag discharging auger 11 → a dry slag outlet 10;
b. the oil-containing hazardous waste high-temperature anaerobic pyrolysis refining route comprises the following steps: oily hazardous waste → a feed hopper 27 → a feed inlet 1a → a chain type pyrolysis apparatus 2 → a primary gas-dust separator 2b → a secondary gas-dust separator 3 → a condenser 5 → an oil-water separator 9 waste oil → a liquid storage tank 8 → a reaction vessel 23 → an adsorption column 24 → a catalytic column 25 → a rectification column 26 → semi-finished oil;
c. the waste gas treatment path of the high-temperature anaerobic pyrolysis of the oily hazardous waste comprises the following steps: the exhaust gas from the oil-water separator 9 → the vacuum tank 6 → the vacuum pump 7 → the surge tank 15 → the insulated tank 16 → the burner 17 → the primary duster 18 → the secondary duster 20 → the chimney 21.
The chain-propelled oily hazardous waste high-temperature anaerobic pyrolysis method comprises the steps that a chain-type pyrolysis device 2 is arranged on a frame 12, the chain-type pyrolysis device 2 is provided with a cuboid shell, end covers are arranged at two ends of the shell, a feeding conveyor 1 is arranged at the front part of the upper surface of the shell, a feeding port 1a is arranged on the feeding conveyor 1, a safety valve 2a and a primary gas-dust separator 2b are arranged in the middle of the upper surface of the shell, a discharging port 2l is arranged at the rear part of the lower surface of the shell, a dry slag cache tank 13 is connected to the discharging port 2l, a dry slag discharging auger 11 is connected to the dry slag cache tank 13, a dry slag outlet 10 is arranged on the dry slag discharging auger 11, an inner chain 2g and an outer chain 2h are arranged in the shell, an inner chain scraper 2g1 is arranged on the inner chain 2g, and an outer chain scraper 2h1 is arranged on the outer chain 2h, an inner chain driving shaft assembly 2d and an inner chain driven shaft assembly 2e are arranged outside the side face of the shell, the inner chain driving shaft assembly 2d drives an inner chain 2g to rotate clockwise or anticlockwise, an outer chain driving shaft assembly 2f and an outer chain driven shaft assembly 2c are arranged outside the side face of the shell, the outer chain driving shaft assembly 2f drives an outer chain 2h to rotate anticlockwise, an outer chain scraper 2h1 scrapes hazardous wastes from the front part to the rear part of the shell, the inner chain scraper 2g1 scrapes the hazardous wastes flat, a heater 2j is arranged below the shell, a dust storage tank 4 is connected to the lower part of the secondary gas-dust separator 3, the shell is made of high-temperature resistant steel, a heater 2j and an outer protection layer 2i are sequentially arranged below the shell from inside to outside, the heater 2j is an electric heating wire heater, and the heating temperature of the heater 2j can be adjusted within the range of 80-900 ℃. According to the chain-propelled high-temperature anaerobic pyrolysis method for the oily hazardous wastes, an upper material level sensor and a lower material level sensor are arranged in a dry slag buffer tank 13, a temperature sensor is arranged in a shell of a chain type pyrolysis device 2, and a temperature sensor and a pressure sensor are arranged on a pipeline between a primary gas-dust separator 2b and a secondary gas-dust separator 3.
In the above embodiment, the condenser 5 is circularly cooled by pumping the water in the cooling water tank 22 by the condensate pump 14; the primary dust remover 18 adopts a water curtain dust remover, and a spray pump 19 is needed to circularly spray and remove dust for water in a tank body of the primary dust remover 18.
Claims (5)
1. A high-temperature oxygen-free pyrolysis method for chain-propelled oily hazardous wastes is characterized by comprising the following process flows:
a. the method comprises the following steps of (1) changing oily hazardous waste into dry slag through high-temperature anaerobic pyrolysis: oily hazardous waste → a feeding funnel (27) → a feeding port (1 a) → a chain type pyrolysis device (2) → a discharging port (2 l) → a dry slag buffer tank (13) → a dry slag discharging auger (11) → a dry slag outlet (10);
b. the oil-containing hazardous waste high-temperature oxygen-free pyrolysis refining route: oily hazardous waste → a feed hopper (27) → a feed inlet (1 a) → a chain type pyrolysis device (2) → a primary gas and dust separator (2 b) → a secondary gas and dust separator (3) → a condenser (5) → an oil-water separator (9) waste oil → a liquid storage tank (8) → a reaction kettle (23) → an adsorption tower (24) → a catalytic tower (25) → a rectifying tower (26) → semi-finished oil;
c. the waste gas treatment path of the high-temperature anaerobic pyrolysis of the oily hazardous waste comprises the following steps: waste gas from the oil-water separator (9) → the vacuum tank (6) → the vacuum pump (7) → the buffer tank (15) → the fire insulation tank (16) → the combustion furnace (17) → the primary dust collector (18) → the secondary dust collector (20) → the chimney (21).
2. The method for the high-temperature anaerobic pyrolysis of the oily hazardous waste pushed by the chain according to claim 1, wherein the chain type pyrolysis device (2) is arranged on a frame (12), the chain type pyrolysis device (2) is provided with a cuboid shell, two ends of the shell are provided with end covers, a feeding conveyor (1) is arranged at the front part of the upper surface of the shell, the feeding conveyor (1) is provided with a feeding port (1 a), a safety valve (2 a) and a primary gas-dust separator (2 b) are arranged in the middle of the upper surface of the shell, a discharging port (2 l) is arranged at the rear part of the lower surface of the shell, the discharging port (2 l) is connected with a dry slag cache tank (13), a dry slag discharging screw (11) is connected with a dry slag outlet (11), an inner chain (2 g) and an outer chain (2 h) are arranged in the shell, an inner chain (2 g) and an outer chain (2 h) are arranged in the inner chain (2 g), an inner chain scraper (2 g 1) is arranged on the inner chain (2 g), an outer chain scraper (2 h) is provided with an outer chain scraper (2 h), an outer driving shaft assembly (2 d) and an outer driving assembly (2 e) of a chain or an outer driving shaft (2 c) which drives an outer driving assembly of a chain, and an outer driving assembly of a driving chain (2 c) which drives an inner driving shaft assembly of a chain to rotate clockwise chain and an outer driving shaft assembly (2 c) which drive chain assembly, and an outer driving chain assembly of the chain assembly to rotate clockwise chain assembly, and an outer driving shaft assembly (2 c) are arranged on the outer driving chain assembly, and an outer driving shaft assembly of the driving chain assembly of the chain assembly, outer chain scraper blade (2 h 1) is scraped hazardous waste from the front portion of furnace casing to the rear portion, and interior chain scraper blade (2 g 1) is strickleed hazardous waste, is equipped with heater (2 j) below the casing, has dust storage tank (4) at the sub-unit connection of second grade gas dust separator (3), the casing make by high temperature resistant magnetic conduction steel, be equipped with insulating layer (2 k), heater (2 j), outer protective layer (2 i) from inside to outside in proper order below the casing, heater (2 j) be solenoid heater, the heating temperature of heater (2 j) can be adjusted at 100 ~ 1000 ℃ within range.
3. The method for the high-temperature anaerobic pyrolysis of the oily hazardous wastes pushed by the chains according to claim 1, characterized in that the chain type pyrolysis device (2) is arranged on a frame (12), the chain type pyrolysis device (2) is provided with a cuboid shell, end covers are arranged at two ends of the shell, a feeding conveyor (1) is arranged at the front part of the upper surface of the shell, a feeding port (1 a) is arranged on the feeding conveyor (1), a safety valve (2 a) and a primary gas-dust separator (2 b) are arranged in the middle of the upper surface of the shell, a discharging port (2 l) is arranged at the rear part of the lower surface of the shell, a dry slag buffer tank (13) is connected to the discharging port (2 l), a dry slag discharging auger (11) is connected to the dry slag buffer tank (13), a dry slag outlet (10) is arranged on the dry slag discharging auger (11), an inner chain (2 g) and an outer chain (2 h) are arranged in the shell, an inner chain scraper (2 g 1) is arranged on the inner chain (2 g), an outer chain scraper (2 h) is provided with an outer chain scraper (2 h), an outer chain scraper (2 d) and an inner chain drive shaft assembly (2 e) and an outer chain drive shaft assembly (2 c) and an inner chain assembly (2 c) and an outer chain drive shaft assembly (2 c) and an inner chain assembly drive a clockwise chain assembly and an inner chain assembly drive shaft assembly (2 c drive shaft assembly to rotate clockwise chain assembly or an outer chain assembly, outer chain scraper blade (2 h 1) is scraped hazardous waste from the front portion of furnace casing to the rear portion, and interior chain scraper blade (2 g 1) is strickleed hazardous waste, is equipped with heater (2 j) below the casing, has dust storage tank (4) at the sub-unit connection of second grade gas dust separator (3), the casing make by high temperature resistant steel, be equipped with heater (2 j), outer protective layer (2 i) from inside to outside in proper order below the casing, heater (2 j) be the heating wire heater, the heating temperature of heater (2 j) can be adjusted at 80 ~ 900 ℃ within range.
4. The method for high-temperature anaerobic pyrolysis of oily hazardous waste by chain propulsion according to claim 1 or 2, characterized in that an upper level sensor and a lower level sensor are arranged in the dry slag buffer tank (13), a temperature sensor is arranged in the shell of the chain pyrolysis device (2), and a temperature sensor and a pressure sensor are arranged on the pipeline between the primary gas-dust separator (2 b) and the secondary gas-dust separator (3).
5. The method for high temperature and oxygen-free pyrolysis of oil-containing hazardous waste by chain propulsion according to claim 3, characterized in that an upper level sensor and a lower level sensor are arranged in the dry slag buffer tank (13), a temperature sensor is arranged in the housing of the chain pyrolysis device (2), and a temperature sensor and a pressure sensor are arranged on the pipeline between the primary gas-dust separator (2 b) and the secondary gas-dust separator (3).
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