CN115448565A - High-temperature pyrolysis device and process - Google Patents
High-temperature pyrolysis device and process Download PDFInfo
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- CN115448565A CN115448565A CN202211113933.2A CN202211113933A CN115448565A CN 115448565 A CN115448565 A CN 115448565A CN 202211113933 A CN202211113933 A CN 202211113933A CN 115448565 A CN115448565 A CN 115448565A
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 171
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000008569 process Effects 0.000 title claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 62
- 238000010438 heat treatment Methods 0.000 claims abstract description 58
- 239000010802 sludge Substances 0.000 claims abstract description 18
- 239000000779 smoke Substances 0.000 claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000002485 combustion reaction Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 63
- 239000003546 flue gas Substances 0.000 claims description 32
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 30
- 239000007789 gas Substances 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 241000208125 Nicotiana Species 0.000 claims description 14
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims description 14
- 239000011819 refractory material Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 description 3
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012432 intermediate storage Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention relates to a high-temperature pyrolysis device and a process, the device comprises a pyrolysis furnace, a combustion heat supply furnace and a smoke collecting pipe, wherein the pyrolysis furnace is divided into an inner cavity and an outer cavity, a rotary spiral heating transmission mechanism is arranged in the inner cavity, the outer cavity is a smoke heating layer, smoke heated by the combustion heat supply furnace is sent into the smoke heating layer through a flue, the smoke collecting pipe is arranged at two ends of the pyrolysis furnace and is communicated with a transmission shaft of the rotary spiral heating transmission mechanism, the transmission shaft is hollow, the smoke heating layer is connected with one smoke collecting pipe through the flue, and the other smoke collecting pipe is connected with an external flue. The invention has the advantages that the dry distillation pyrolysis of the oil sludge is realized in the air-isolated sealed furnace, so that the oil sludge treatment is realized in a recycling, harmless and reducing manner, and the problem of difficult oil sludge treatment is solved.
Description
Technical Field
The invention relates to a high-temperature pyrolysis device and a high-temperature pyrolysis process.
Background
The oily sludge is oily solid waste generated in the processes of oil exploitation, transportation, refining and oily sewage treatment, the components of the oily sludge are complex and contain a large amount of toxic substances such as benzene series, phenols, anthracene, pyrene and the like, the oily sludge is listed as hazardous waste by the state, and the code HW08 of the hazardous waste is adopted.
If the landfill occupies a large amount of cultivated land, secondary pollution risk is caused to soil, water and air, and resource waste is caused by adopting an incineration method.
Disclosure of Invention
The invention provides a high-temperature pyrolysis device and a high-temperature pyrolysis process, which are used for realizing dry distillation pyrolysis of oil sludge by indirectly heating in a sealed furnace with a heat-resistant steel shell for isolating air, so that the oil sludge treatment is recycled, harmless and reduced, and the problem of difficult oil sludge treatment is solved.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a high-temperature pyrolysis device, includes pyrolysis oven, burning heat supply stove, collection tobacco pipe, the pyrolysis oven divides into inside and outside two-layer cavity, and gyration spiral heating drive mechanism is installed to the inner chamber, and the exocoel is the flue gas zone of heating, the flue gas after the burning heat supply stove heating is sent into the flue gas zone of heating through the flue, collection tobacco pipe installs the both ends at the pyrolysis oven, and with gyration spiral heating drive mechanism's transmission shaft looks UNICOM, the transmission shaft is hollow, a collection tobacco pipe is connected through the flue to the flue gas zone of heating, and another collection tobacco pipe is connected and is sent the flue outward.
The rotary spiral heating transmission mechanism comprises transmission shafts and blades, the blades are two groups of spiral blades which are respectively arranged on two transmission shafts, the two groups of spiral blades are small semicircular spiral blades, and the two groups of spiral blades are in staggered arrangement and are meshed with each other, and the two transmission shafts are rotated through gear transmission.
The two ends of the transmission shaft extending out of the pyrolysis furnace are supported through the idler wheels, one transmission shaft is in transmission connection with the driving mechanism through the transmission chain wheel, and the transmission shaft is axially positioned through the check ring and the stop wheel.
The retaining ring is fixed on the transmission shaft, the retaining wheels are axially positioned on the transmission shaft on two sides of the retaining ring, and the retaining wheels are arranged on the inclined positioning shaft through bearings.
The inner chamber of pyrolysis oven passes through heat-resistant steel structural layer parcel and becomes independent space, the outmost refractory material layer that is of pyrolysis oven, support is built by laying bricks or stones through refractory material between heat-resistant steel structural layer and the refractory material layer, the inner chamber is equipped with feed inlet, discharge gate and gas vent to pyrolysis oven outer UNICOM.
The bottom of flue gas zone of heating still is equipped with ignition nozzle and noncondensable gas nozzle.
The pyrolysis furnaces are connected in series or in parallel; when the multiple groups are connected in series, the combustion heat supply furnace is connected with the last group of pyrolysis furnaces, and the outward delivery flue of each pyrolysis furnace is connected with the smoke heating layer inlet of the previous group of pyrolysis furnaces.
Still include auger, material cooler, ripple expander, middle hopper, rotatory tripper, the auger is in the feed inlet department feeding of first set of pyrolysis oven, ripple expander, middle hopper and rotatory tripper are installed to the discharge gate department of last set of pyrolysis oven, rotatory tripper is arranged the material to material cooler, be provided with high-order material level switch and low level material level switch on the middle hopper.
A pyrolysis process of a high temperature pyrolysis apparatus, comprising:
feeding the dry distillation pyrolysis material to the pyrolysis furnace through the auger, feeding the dry distillation pyrolysis material into the inner cavity of the first group of pyrolysis furnace, pushing the dry distillation pyrolysis material to the discharge port of the first group of pyrolysis furnace under the pushing action of the paddle which is meshed with the first group of pyrolysis furnace in pairs to rotate, heating the dry distillation pyrolysis material in the first group of pyrolysis furnace to 350-400 ℃, and removing water and light fractions in the dry distillation pyrolysis material;
water and oil gas discharged from the pyrolysis furnace are discharged through an exhaust port;
feeding the dry distillation pyrolysis material into the next group of pyrolysis furnaces, heating the dry distillation pyrolysis material in the second group of pyrolysis furnaces to 550-600 ℃, and further discharging water and oil gas in the material to enable the oil content in the dry distillation pyrolysis material to reach a discharge standard;
and (3) sending the qualified pug into a material cooler, and cooling the pug to be below 100 ℃ by the material cooler.
The dry distillation pyrolysis material is oil sludge or is used for carbon-coated thermal processing treatment.
Compared with the prior art, the invention has the beneficial effects that:
1) The mode of air isolation indirect heating is adopted, so that the oil recovery rate in the oil sludge can reach more than 60%, and the resource recycling is realized.
2) The oil sludge can be coked in the heating process, and a plurality of devices can not work normally due to coking blockage.
3) The device can realize modularization, and a plurality of sets of equipment can realize series connection and parallel connection according to the oil sludge condition and meet different yield requirements.
4) The device of the invention can heat the inside and the outside, and has high heat transfer efficiency.
5) A large amount of combustible non-condensable gas can be generated in the destructive distillation and pyrolysis process of the oil sludge, and the gas can be used as supplementary fuel and sent into a furnace for supplementary combustion, so that a large amount of externally supplied fuel can be saved, and the operation cost is greatly reduced.
6) The invention can control the temperature according to the chemical inspection result of the slag, the oil content of the produced slag can be controlled below the national harmless standard, and the harmlessness is realized.
7) The whole treatment process is carried out in the closed heating device, the influence on the environment is reduced to the minimum, and the reduction of oil, mud and water in the oil sludge is realized.
Drawings
FIG. 1 is a schematic process diagram of example 1 of the present invention.
Fig. 2 isbase:Sub>A viewbase:Sub>A-base:Sub>A of fig. 1.
FIG. 3 is an enlarged view of a series of pyrolysis furnaces.
FIG. 4 is an enlarged partial view of the drive shaft support and drive connection.
Fig. 5 is a partially enlarged view of the retainer ring and the catch wheel.
In the figure: 1-hopper, 2-auger, 3-closed gate plate, 4-inlet ripple expander, 5-inner chamber, 6-paddle, 7-outlet ripple expander, 8-conveying pipeline, 9-intermediate storage bin, 10-intermediate hopper, 11-rotary discharge valve, 12-material level switch, 13-material cooler, 14-combustion heating furnace, 15-main fuel burner, 16-noncondensable gas burner, 17-flue, 18-flue gas heating layer inlet, 19-ignition burner, 20-external gas supply, 21-noncondensable gas burner, 22-flue gas heating layer smoke outlet, 23-smoke collecting pipe I, 24-transmission shaft, 25-smoke collecting pipe II, 26-external flue, 27-motor, 28-chain, 29-chain wheel, 30-gear, 31-roller, 32-retainer ring, 33-retainer wheel, 34-bearing.
Detailed Description
The following further describes embodiments of the present invention in conjunction with the attached figures:
the utility model provides a high temperature pyrolysis device, includes pyrolysis oven, burning heat supply furnace 14, collection tobacco pipe, the pyrolysis oven divides into inside and outside two-layer cavity, and gyration spiral heating drive mechanism is installed to inner chamber 5, and the exocoel is the flue gas zone of heating, the flue gas after the heating of burning heat supply furnace 14 is sent into the flue gas zone of heating through flue 17, collection tobacco pipe installs the both ends at the pyrolysis oven, and with gyration spiral heating drive mechanism's transmission shaft 24 looks UNICOMs, transmission shaft 24 is hollow, a collection tobacco pipe (collection tobacco pipe I23) is connected through flue 17 to the flue gas zone of heating, and another collection tobacco pipe (collection tobacco pipe II 25) is connected and is sent flue 26 outward. And a bearing and a seal are arranged between the transmission shaft 24 and the smoke collecting pipe.
The rotary spiral heating transmission mechanism comprises transmission shafts 24 and blades 6, wherein the blades 6 are two groups of spiral blades which are respectively arranged on the two transmission shafts 24, the two groups of spiral blades are small semicircular spiral blades, the two groups of spiral blades are arranged in a staggered mode and are meshed with each other, and the two transmission shafts 24 are in transmission rotation through gears 30.
The two ends of the transmission shafts 24 extending out of the pyrolysis furnace are supported by rollers 31, one of the transmission shafts 24 is in transmission connection with a driving mechanism through a transmission chain wheel 29, and the transmission shaft 24 is axially positioned through a retainer ring 32 and a baffle wheel 33.
The bottom of flue gas zone of heating still is equipped with ignition nozzle 19 and noncondensable gas nozzle 21.
The pyrolysis furnaces are connected in series or in parallel; when the multiple sets are connected in series, the combustion heat supply furnace 14 is connected with the last set of pyrolysis furnace, and the outward feeding flue 26 of the pyrolysis furnace is connected with the smoke heating layer inlet 18 of the previous set of pyrolysis furnace.
Still include auger 2, material cooler 13, ripple expander 7, middle hopper 10, rotatory tripper 11, auger 2 is in the feed inlet department feeding of first set of pyrolysis oven, ripple expander 7, middle hopper 10 and rotatory tripper 11 are installed to the discharge gate department of last set of pyrolysis oven, rotatory tripper 11 is arranged to material cooler 13, be provided with two material level switches 12 on the middle hopper 10, it is that high-order material level switch and low level material are opened respectively. The inside of the material cooler 13 is a water-cooled wall outside the screw feeder.
A pyrolysis process of a high temperature pyrolysis apparatus, comprising:
1. the dry distillation pyrolysis material is conveyed and heated in the closed container; 2. the high-temperature flue gas flows outside the closed container and is heated. The whole process is continuously heat-exchanged in a counter-current way.
The transmission and heating processes of the dry distillation pyrolysis material in the closed container are as follows:
feeding dry distillation pyrolysis materials from a hopper 1 to a pyrolysis furnace through an auger 2 with a variable frequency controller, arranging a closed gate plate 3 and a corrugated expander 7 at a feeding port of the pyrolysis furnace, feeding the dry distillation pyrolysis materials into an inner cavity 5 of a first group of pyrolysis furnace through the closed gate plate 3 and the corrugated expander 7, enabling the dry distillation pyrolysis materials to continuously reach a discharge port of the first group of pyrolysis furnace step by step under the pushing of a paddle 6 which has a coke breaking function and rotates in a pairwise meshing manner in the furnace, heating the dry distillation pyrolysis materials in the first group of pyrolysis furnace to 350-400 ℃, and mainly removing water and light fractions in the dry distillation pyrolysis materials by the first group of pyrolysis furnace to lighten load for a section of a second group of dry distillation pyrolysis furnace;
water and oil gas discharged from the pyrolysis furnace are discharged through an exhaust port, and the exhaust port is connected with a conveying pipeline 8 to convey the water and the oil gas out;
feeding the dry distillation pyrolysis material into the next group of pyrolysis furnaces, wherein the whole conveying process is the same as that of the first group of dry distillation pyrolysis furnace sections, only the heating temperature is different, the dry distillation pyrolysis material in the second group of pyrolysis furnaces is heated to 550-600 ℃ or even higher, and water and oil gas in the material are further discharged, so that the oil content in the dry distillation pyrolysis material reaches the discharge standard, and the oil content in the dry distillation pyrolysis material is the basis of the heating temperature;
qualified mud enters the intermediate hopper 10 through the corrugated expander 7, the high-level material level switch 12 and the low-level material level switch 12 are arranged in the intermediate hopper 10, when the material reaches the upper limit, all downstream equipment is put into operation, and when the material reaches the lower limit, the downstream equipment stops operating, so that the energy consumption can be reduced, and the sealing is facilitated. The materials in the intermediate hopper 10 are sent into a material cooler 13 through a rotary discharger 11, the material cooler 13 cools mud through dividing wall water cooling, the mud is cooled to be below 100 ℃, and the mud is packaged into a ton bag or discharged into a material tank through a packaging machine and is transported away.
If the oil content, the water content and the yield are low, a group of dry distillation pyrolysis furnaces can be adopted to directly finish the dry distillation pyrolysis process, and the harmless treatment process at 550-600 ℃ is achieved.
The dry distillation pyrolysis material is oil sludge or coated carbon powder for carbon-coated thermal processing treatment.
The oil and water of the invention are changed into steam under the heating of the furnace and discharged out of the furnace, the steam is changed into liquid and non-condensable gas through condensation, the liquid is subjected to oil-water separation, and the non-condensable gas is sent to the pyrolysis furnace to be used as a heat source for combustion. The mud is discharged from the discharge hole through cooling, and the separation of oil, mud and gas is realized.
The heat supply process of the dry distillation pyrolysis furnace comprises the following steps:
the high-temperature flue gas after combustion is generally not higher than 1000 ℃, and is fed into the flue gas heating layer of the pyrolysis furnace through a flue 17 and a flue gas heating layer inlet 18 of the last group of dry distillation pyrolysis furnaces, the high-temperature flue gas externally heats the inner cavity 5, and an ignition burner 19, an external gas supply 20 and a non-condensable gas burner 21 are further arranged at the bottom of the flue gas heating layer of the pyrolysis furnace for adjusting heat supply capacity and reducing heat dissipation of an external pipeline. After the heating task is finished by the flue gas in the flue gas heating layer in a counter-current manner, the flue gas is exhausted out of the furnace through a flue gas heating layer exhaust port 22, the temperature of the flue gas exhausted out of the furnace is above 650 ℃, the flue gas is respectively fed into a transmission shaft 24 of a propeller blade through a pipeline and a flue collecting pipe I23, the multi-surface heating of the propeller blade 6, the transmission shaft 24 and the inner cavity 5 is realized, the heat transfer area can be improved by 60%, the heating efficiency is improved, the heat utilization rate is higher, the energy conservation and emission reduction are facilitated, and the equipment occupation area and the investment are reduced.
The flue gas from the transmission shaft 23 is sent into the flue gas heating layer of the previous group of pyrolysis furnaces through the smoke collecting pipe II 25 and the external smoke pipe 26, the heating process is the same as that of the last group of pyrolysis furnaces, and only the temperature of the flue gas is different.
The transmission support structure of the transmission shaft 24 of the invention is as follows:
because the transmission shaft 24 is thick, the transmission system adopts a brand new mode, the motor speed reducer 27 utilizes the speed reducer to carry out frequency conversion speed regulation to adapt to the change of yield, and is connected with a chain wheel 29 on the transmission shaft 24 through a chain 28, at least three sets of small rolling wheels 31 are arranged on the excircle of the external part of the transmission shaft 24 and are used for supporting the transmission shaft 24, a retaining ring 32 and a retaining wheel 33 are also arranged on the excircle of the mandrel for balancing the axial force, a pair of gears 30 are additionally arranged on the driving shaft and the driven shaft, the two gears are mutually meshed to realize the synchronous opposite rotation of the two shafts, a plurality of spiral blades 6 which form a certain included angle with the transmission shaft are arranged on the transmission shaft 24, and oil sludge completes the conveying task under the pushing of the mutually meshed blades. The retainer ring 32 is fixed on the transmission shaft 24, the baffle wheels 33 are axially positioned on the transmission shaft 24 at two sides of the retainer ring 32, the baffle wheels 33 are arranged on the inclined positioning shaft through bearings 34, and when the retainer ring 32 rotates along with the transmission shaft 24, the baffle wheels 33 are driven by friction force to automatically transmit, so that the radial rotation and the axial positioning of the transmission shaft 24 are realized.
Claims (10)
1. The utility model provides a high temperature pyrolysis device, its characterized in that, includes pyrolysis oven, burning heat supply stove, collection tobacco pipe, the pyrolysis oven divides into inside and outside two-layer cavity, and gyration spiral heating drive mechanism is installed to the inner chamber, and the outer chamber is the flue gas zone of heating, the flue gas after the burning heat supply stove heating is sent into the flue gas zone of heating through the flue, collection tobacco pipe installs the both ends at the pyrolysis oven, and with gyration spiral heating drive mechanism's transmission shaft looks UNICOM, the transmission shaft is hollow, a collection tobacco pipe is connected through the flue to the flue gas zone of heating, and another collection tobacco pipe is connected and is sent the flue outward.
2. The pyrolysis device of claim 1, wherein the rotary screw heating transmission mechanism comprises a transmission shaft and a paddle, the paddle is two sets of screw blades respectively mounted on the two transmission shafts, the two sets of screw blades are small semi-circular screw blades, and the two sets of screw blades are staggered and meshed with each other, and the two transmission shafts rotate through gear transmission.
3. The pyrolysis device of claim 2, wherein the two ends of the transmission shaft extending out of the pyrolysis furnace are supported by rollers, one of the transmission shafts is in transmission connection with a driving mechanism through a transmission chain wheel, and the transmission shaft is axially positioned by a retaining ring and a retaining wheel.
4. A pyrolysis apparatus according to claim 3, wherein the retainer ring is fixed to the transmission shaft, the baffle wheels are axially positioned on both sides of the retainer ring relative to the transmission shaft, and the baffle wheels are mounted on the inclined positioning shaft through bearings.
5. The high-temperature pyrolysis device of claim 1, wherein an inner cavity of the pyrolysis furnace is wrapped into an independent space through a heat-resistant steel structure layer, an outermost layer of the pyrolysis furnace is a refractory material layer, the heat-resistant steel structure layer and the refractory material layer are supported by a refractory material masonry, and the inner cavity is provided with a feed inlet, a discharge outlet and an exhaust outlet which are communicated with the outside of the pyrolysis furnace.
6. The pyrolysis device of claim 1, wherein the bottom of the flue gas heating layer is further provided with an ignition burner and a non-condensable gas burner.
7. A high-temperature pyrolysis device according to any one of claims 1 to 5, wherein the pyrolysis furnaces are connected in series or in parallel in one or more groups; when the multiple groups are connected in series, the combustion heat supply furnace is connected with the last group of pyrolysis furnaces, and the outward delivery flue of each pyrolysis furnace is connected with the smoke heating layer inlet of the previous group of pyrolysis furnaces.
8. The high-temperature pyrolysis device of claim 6, further comprising an auger, a material cooler, a corrugated expander, an intermediate hopper and a rotary discharger, wherein the auger feeds materials at the feeding port of the first group of pyrolysis furnaces, the corrugated expander, the intermediate hopper and the rotary discharger are mounted at the discharging port of the last group of pyrolysis furnaces, the rotary discharger discharges materials to the material cooler, and the intermediate hopper is provided with a high material level switch and a low material level switch.
9. A pyrolysis process using the high temperature pyrolysis apparatus as claimed in any one of claims 1 to 8, comprising:
feeding the dry distillation pyrolysis material into the inner cavity of the first group of pyrolysis furnaces, driving the dry distillation pyrolysis material to reach the discharge port of the first group of pyrolysis furnaces under the driving of the blades which are meshed with each other and rotate in pairs, heating the dry distillation pyrolysis material in the first group of pyrolysis furnaces to 350-400 ℃, and removing water and light fractions in the dry distillation pyrolysis material;
water and oil gas discharged from the pyrolysis furnace are discharged through an exhaust port;
feeding the dry distillation pyrolysis material into the next group of pyrolysis furnaces, heating the dry distillation pyrolysis material in the second group of pyrolysis furnaces to 550-600 ℃, and further discharging water and oil gas in the material to enable the oil content in the dry distillation pyrolysis material to reach a discharge standard;
and (4) sending the qualified pug into a material cooler, and cooling the pug to be below 100 ℃ by the material cooler.
10. A pyrolysis process of a high temperature pyrolysis device according to claim 1, wherein the dry distilled pyrolysis material is oil sludge or used for carbon coated thermal processing.
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| CN202211113933.2A CN115448565A (en) | 2022-09-14 | 2022-09-14 | High-temperature pyrolysis device and process |
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| CN202211113933.2A CN115448565A (en) | 2022-09-14 | 2022-09-14 | High-temperature pyrolysis device and process |
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| CN218561261U (en) * | 2022-09-14 | 2023-03-03 | 赵延锋 | High-temperature pyrolysis device |
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2022
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Application publication date: 20221209 |