CN204874400U - Continuous dry distillation device of low order fine coal - Google Patents
Continuous dry distillation device of low order fine coal Download PDFInfo
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- CN204874400U CN204874400U CN201520575230.0U CN201520575230U CN204874400U CN 204874400 U CN204874400 U CN 204874400U CN 201520575230 U CN201520575230 U CN 201520575230U CN 204874400 U CN204874400 U CN 204874400U
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Abstract
The utility model relates to a continuous dry distillation device of low order fine coal, including the continuous gas retort of external heating, charging system, gas gathering system and discharge device, the charging system comprises double sealing feeding device and material buffering cabin, and the gas retort top is equipped with the gas -collecting device who stretches into carbomorphism room middle part, and discharge device is discharge device no. 1 or discharge device no. 2, discharge device no. 1 is mainly by row burnt roller composition, discharge device no. 2 mainly by furnace charge cooling device, arrange material control valve, furnace charge buffer memory device and quantitative blow -off valve and constitute. The utility model discloses a process of using low order fine coal to carry out continuous dry distillation as the raw materials in the continuous gas retort of external heating, reinforced in -process can prevent that the inside and outside air cluster of retort house from leaking, realizes effectively sealedly, the raw coke oven gas that produces in the retort process can be derived fast to can improve light oil productivity and caloric power of gas, steerable it is even, discharge in succession to the powdered coke to arrange burnt in -process, and the semicoke quality is controllable adjustable.
Description
Technical field
The utility model relates to low-rank coal retorting technique field, particularly relates to a kind of low order fine coal continuous retorting device.
Background technology
Low-rank coal and the low coal of degree of coalification, this coal quality is low, and in China, distribution is wide, and output is large.A large amount of fine coal (granularity is at the coal of below 13mm) can be produced in low-rank coal recovery process, due to the reason such as poor air permeability, good fluidity of fine coal, traditional technique and technology can not carry out destructive distillation to fine coal, and exploitation fine coal has out been wasted substantially.Therefore, how can destructive distillation fine coal continuously, improve light oil productive rate simultaneously, improve caloric power of gas; The discharge of effective control coke breeze; Effective sealing, prevents from dust and coal gas from leaking being the important step of the design's technique and technology.
The subject matter that traditional low-rank coal distillation process and technology exist: 1) due to the poor air permeability of fine coal, coal gas can not be derived smoothly.Therefore, traditional coal carbonization furnace can only destructive distillation lump coal, can not destructive distillation fine coal, and raw materials cost is high, and economic benefit is low.Because the coal gas produced in retort process can not be derived smoothly, make coal gas stand cracking after long-time high temperature, the tar light oil productive rate in coal gas is low, the calorific value also corresponding reduction of coal gas; 2) due to the good fluidity of coke breeze, traditional piece-picking type discharge device can not seal and control the discharge of coke breeze; 3) interface of valve and furnace charge gatherer of feeding adopts the pattern of socket joint, can not effective sealing, and when coalingging, dust and coal gas leak seriously from the gap of socket joint, cause environmental pollution.
Summary of the invention
The utility model provides a kind of low order fine coal continuous retorting device, achieves with low order fine coal for raw material carries out the process of continuous carbonization in external heat continuous shale oven, can prevent destructive distillation indoor-outdoor air string from leaking, realize effective sealing in reinforced process; The raw gas produced in retort process can be derived fast, and can improve light oil productive rate and caloric power of gas; Can control it for coke breeze in coke discharging process evenly, continuously to discharge, semicoke is quality controllable adjustable.
In order to achieve the above object, the utility model realizes by the following technical solutions:
A kind of low order fine coal continuous retorting device, comprises external heat continuous shale oven, charging system, natural gas gathering system and discharge device; Described charging system is made up of double seal feeding device and material buffering chamber, and gas retort top is provided with the gas extractor stretched in the middle part of coking chamber, and discharge device is discharge device one or discharge device two; Discharge device one is primarily of coke discharging cylinder composition, and discharge device two is primarily of furnace charge refrigerating unit, discharge control valve, furnace charge buffer storage and quantitative blow-off valve composition.
The described opening for feed of double seal feeding device is connected with the discharge gate of raw material cabin, and discharge port is connected with the opening for feed of below material buffering chamber, and the discharge port of material buffering chamber stretches into body of heater destructive distillation indoor; Opening for feed and the discharge outlet of double seal feeding device are equipped with sealed gate, and its top is also provided with level gage.
Described gas extractor is made up of bottom gas collection umbrella, gas collection road, top gas collection umbrella and gas collection road dredging pipe, bottom gas collection umbrella is made up of multiple fimbriatum connected by frustum bell and spigot frame, top gas collection umbrella is overall connectivity structure, be communicated with by gas collection road between bottom gas collection umbrella with top gas collection umbrella, gas collection umbrella side, top is by Flange joint upcast; Gas collection umbrella one end, top is provided with gas collection road dredging pipe, and gas collection road dredging pipe is the provided pipe be connected with drain cleaner.
Described discharge device one is made up of housing, rotating shaft, coke discharging cylinder, supporting device and drive unit, and coke discharging cylinder is connected with drive unit by rotating shaft, and supporting device is separately fixed at housing two ends and supporting shaft rotates; Establish housing outside coke discharging cylinder, housing upper is provided with the feeding mouth adapted with destructive distillation room bottom discharge mouth size, and lower housing portion establishes discharge port discharge port side plate to be provided with water coolant sprinkling mouth; Coke discharging cylinder along the circumferential direction arranges at least one elongated feed bin, and when feed bin number is greater than 1, the centerlines of adjacent feed bin is greater than the opening angle of feed bin.
Described discharge device two comprises the furnace charge refrigerating unit, discharge control valve, furnace charge buffer storage and the quantitative blow-off valve that connect successively from top to bottom, and the side of described furnace charge refrigerating unit is provided with coke quenching steam interface, coke quenching water interface, thermoelectricity on a rare occasion; Furnace charge buffer storage side is provided with secondary cooling water interface or cooling twice vapor interface, high-order level gage, low level level gage, thermopair two, moisture on-line proofing unit and gas discharge outlet.
Compared with prior art, the beneficial effects of the utility model are:
1) achieve and in external heat continuous shale oven, carry out the process of continuous carbonization with low order fine coal for raw material, realize making full use of of resource;
2) can prevent destructive distillation indoor-outdoor air string from leaking in reinforced process, realize effective sealing, air conservation, ensure that gas retort process environments is stablized;
3) raw gas produced in retort process can be derived fast, avoids tar in raw gas in retort section generation cracking, prevents the excessive damage furnace wall of furnace pressure, and can improve light oil productive rate and caloric power of gas;
4) powdery grog can control it and evenly, continuously discharges;
5) semicoke can continuously, stable, balanced discharge after the cooling period, it is quality controllable adjustable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of charging system described in the utility model.
Fig. 3 a is the front view of gas extractor described in the utility model.
Fig. 3 b is the side-view of gas extractor described in the utility model.
Fig. 4 a is the structural representation of discharge device one described in the utility model.
Fig. 4 b is the coke discharging cylinder sectional view of discharge device one described in the utility model.
Fig. 5 is the structural representation of discharge device two described in the utility model.
Diagram: 1. Double seal feeding device 101. The inlet gate 102. The discharging mouth gate 2. Material slow inventory 201. Continuous material level meter 202. The material delayed silo discharging mouth (3) the gas collection system 4. Outside heating continuous retort 5. 501. A gas collecting device bottom gas collecting umbrellas 502. Set the airway 503. Deep coal bin 504. At the top of the gas collecting umbrellas 505. Set the airway dredge pipe 6. Chamber 7. A discharge device 701. Housing 702. Row of coke drum 703. Temperature detection device 704. Air pressure detection device 705. Support device, a 706. The coupling 707. Drive 708. The connecting seat 709. Cooling water spraying mouth 710 support device 2 711. The sides of a 712. Into the mouth 713. The side panel 2 714. The manhole 715. A manhole cover 716. Bin 717. The discharging port 718. The clearance of 719. The rotor 8. Discharging device. 801. The charge cooling device 802. Discharging valve 803. The secondary cooling water or secondary cooling steam interface 804. The burden cache device 805. Quantitative discharge valve 806. Quantitative discharge valve drive 807. Moisture on-line detection device 808. Low material level meter 809. High of 810. The indicator thermocouple 2 811. Gas discharge 812. The discharge control valve drive 813. The coke cooling water interface 814. Coke quenching steam interface 815. A thermocouple
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
Seeing Fig. 1, is structural representation of the present utility model, and a kind of low order fine coal of the utility model continuous retorting device, comprises external heat continuous shale oven 4, charging system, natural gas gathering system 3 and discharge device; Described charging system is made up of double seal feeding device 1 and material buffering chamber 2, and gas retort top is provided with the gas extractor 5 stretched in the middle part of coking chamber, and discharge device is discharge device 1 or discharge device 28; Discharge device 1 forms primarily of coke discharging cylinder 702, and discharge device 28 forms primarily of furnace charge refrigerating unit 801, discharge control valve 802, furnace charge buffer storage 804 and quantitative blow-off valve 805.
The described opening for feed of double seal feeding device 1 is connected with the discharge gate of raw material cabin, and discharge port is connected with the opening for feed of below material buffering chamber 2, and the discharge port 202 of material buffering chamber stretches into body of heater destructive distillation indoor; The opening for feed of double seal feeding device 1 and discharge outlet are equipped with sealed gate 101,102, and its top is also provided with level gage.
Described gas extractor 5 is made up of bottom gas collection umbrella 501, gas collection road 502, top gas collection umbrella 504 and gas collection road dredging pipe 505, bottom gas collection umbrella 501 is made up of multiple fimbriatum connected by frustum bell and spigot frame, top gas collection umbrella 504 is overall connectivity structure, be communicated with by gas collection road 502 between bottom gas collection umbrella 501 with top gas collection umbrella 504, gas collection umbrella 504 side, top is by Flange joint upcast; Gas collection umbrella 504 one end, top is provided with gas collection road dredging pipe 505, and gas collection road dredging pipe 505 is the provided pipes be connected with drain cleaner.
Described discharge device 1 is made up of housing 701, rotating shaft 719, coke discharging cylinder 702, supporting device 705,710 and drive unit 707, coke discharging cylinder 702 is connected with drive unit 707 by rotating shaft 719, and supporting device 705,710 is separately fixed at housing 701 two ends and supporting shaft 719 rotates; Establish housing 701 outside coke discharging cylinder 702, housing 701 top is provided with the feeding mouth 712 adapted with destructive distillation room bottom discharge mouth size, and discharge port 717 is established in housing 701 bottom, and discharge port side plate is provided with water coolant and sprays mouth 709; Coke discharging cylinder 702 along the circumferential direction arranges at least one elongated feed bin 716, and when feed bin number is greater than 1, the centerlines degree of adjacent feed bin is greater than the opening angle of feed bin.
Described discharge device 28 comprises the furnace charge refrigerating unit 801, discharge control valve 802, furnace charge buffer storage 804 and the quantitative blow-off valve 805 that connect successively from top to bottom, and the side of described furnace charge refrigerating unit 801 is provided with coke quenching steam interface 814, coke quenching water interface 813, thermoelectricity on a rare occasion 815; Furnace charge buffer storage 804 side is provided with secondary cooling water interface or cooling twice vapor interface 803, high-order level gage 809, low level level gage 808, thermopair 2 810, moisture on-line proofing unit 807 and gas discharge outlet 811.
The technological process of a kind of low order fine coal of the utility model continuous retorting device is: low order fine coal raw material enters in external-heat continuous shale oven 4 by double seal feeding device 1 and material buffering chamber 2, in coking chamber, by raw gas in stove being collected by the gas extractor 5 stretched into from furnace roof in the middle part of retort section and peripheral air collecting chamber 6, and derived by natural gas gathering system 3; Furnace charge after destructive distillation process is discharged by discharge device; Discharge device has 2 kinds of forms optional, and discharge device 1 evenly will be discharged through cooled powdery furnace charge constant speed by coke discharging cylinder 702; Discharge device 28 continuously, is evenly entered in furnace charge buffer storage 804 by discharge control valve 802 after once cooling powdery, bulk or powdery and block mixture charge, and in furnace charge buffer storage 804, furnace charge is discharged by quantitative blow-off valve 805 after cooling twice.
When being fed in raw material by double seal feeding device 1, the opening for feed gate 101 of double seal feeding device 1 and discharge port gate 102 interlocked control, the same time can only have a gate to be in opened condition, ensures that the gas of extraneous air and destructive distillation indoor completely cuts off mutually.
In coking chamber retort section, raw gas, after bottom gas collection umbrella 501 is collected, is entered in the top gas collection umbrella 504 be interconnected by gas collection road 502, then is pooled to upcast place and derives outside stove by natural gas gathering system 3; Top gas collection umbrella 504 plays material distributing plate effect simultaneously.
When adopting discharge device 28 discharge, specific embodiment is: in external-heat continuous shale oven 4, carry out powdery, bulk or the powdery after destructive distillation process and block mixture charge, enter in the furnace charge refrigerating unit 801 of lower portion of furnace body at high operating temperatures, by residue waste water, steam, furnace charge is once cooled, charge-temperature is down to less than 350 DEG C; Then furnace charge is discharged body of heater continuously, equably through discharge control valve 802 and is entered in furnace charge buffer storage 804, adopts water or steam to carry out cooling twice, charge-temperature is down to less than 150 DEG C; Finished product furnace charge moisture is adjustable in scope below 8.0%, meets the requirements of finished product furnace charge and is discharged by quantitative blow-off valve 805.
As shown in Figure 2, be the structural representation of charging system described in the utility model.Charging system is arranged between gas retort top charging bole and raw material cabin, and the useful volume of material buffering chamber 2 is greater than the useful volume of double seal feeding device 1, and material buffering chamber 2 is provided with continous way level gage 201; The opening for feed gate 101 of double seal feeding device 1 and discharge port gate 102 adopt pneumatic, to surge or electronic mode drives, and automatic control can be realized.When the material level in material buffering chamber 2 is low material level, detection signal is sent to Controlling System by continous way level gage 201, and Controlling System controls discharge port gate 102 and automatically opens, and makes material enter material buffering chamber 2 from double seal feeding device 1.When the material in double seal feeding device 1 all enters material buffering chamber 2, discharge port gate 102 is closed, now the material of material buffering chamber 2 arrives high charge level, because the volume of material added in material buffering chamber 2 (that is to say and add destructive distillation room) is the useful volume of double seal feeding device 1 at every turn, therefore just the inventory added in destructive distillation room can be calculated accurately by statistics charging times.Controlling System opens opening for feed gate 101 charging again of double seal feeding device 1 subsequently, makes material enter double seal feeding device 1 from raw material cabin; When level gage send material fill it up with signal time, opening for feed gate 101 is closed automatically.In whole charging process, the opening for feed gate 101 of double seal feeding device 1 and discharge port gate 102 always have one to be in closing condition, ensure that the gas of extraneous air and destructive distillation indoor can not be fled mutually.
Be equipped with air collecting chamber in the coking chamber of conventional gas retort, the utility model, in order in time low order fine coal be collected at the raw gas that retort section produces and be derived, has set up gas extractor 5.As shown in Figure 3 a and Figure 3 b shows, be the structural representation of gas extractor 5 described in the utility model.Bottom gas collection umbrella 501 is positioned at retort section, and for single fimbriatum passes through the integrated structure of deck or pinned connection, raw gas enters the passage in the middle part of bottom gas collection umbrella 501 by the gap between each fimbriatum, upwards enters top gas collection umbrella 504 by gas collection road 502.Gas collection road 502 is similarly the integrated structure of connection segment, and gas collection road 502 epimere and top gas collection umbrella 504 are all fixed on and go deep on coal bin 503, go deep into coal bin 503 and are arranged on above coking chamber.Top gas collection umbrella 504 can play the effect of material distributing plate simultaneously, and fine coal is evenly entered in body of heater by both sides.According to the quantity in raw gas amount adjustable bottom gas collection umbrella 501 frustum size and gas collection road 502, raw gas collection process middle and lower part gas collection umbrella 501 gas flow rate can be controlled lower than 1m/s, avoid a large amount of dust contained in raw gas to enter gas collection road 502 with raw gas.
As shown in figures 4 a and 4b, be the structural representation of discharge device 1 described in the utility model.Discharge device one feeding mouth 712 side plate is 2 blocks of tilted plates being located at feeding mouth 712 both sides elongated setting vertically respectively, and its latus inframedium 1 is positioned at front end during coke discharging cylinder 702 return, and side plate 2 713 is positioned at rear end during coke discharging cylinder 702 return; The distance of side plate 1 lower end and vertical axis is less than the distance of side plate 2 713 lower end and vertical axis; Side plate 2 713 is provided with temperature-detecting device 703, pressure test device 704 and access opening 714.
Supporting device 2 710 and supporting device 1 are connected with the two ends, left and right of housing 701 respectively, and rotating shaft 719 two ends are supported by supporting device 1 and supporting device 2 710 respectively; Drive unit 707 is connected by shaft coupling 706 with rotating shaft 719, is connected by connection seat 708 with housing 701; Coke discharging cylinder 702 is provided with feed bin 716.
The feeding mouth 712 of discharge device one is positioned at housing 701 top, be connected with bottom destructive distillation room by flange, when drive unit 707 drives coke discharging cylinder 702 to rotate by shaft coupling 706, grog bottom destructive distillation room falls to filling up the feed bin 716 of coke discharging cylinder 702 under gravity automatically, feed bin 716 along coke discharging cylinder 702 axially linearly or spiral type distribution, to ensure bottom destructive distillation room the homogeneity that material is along its length discharged.The temperature and pressure situation be located at when grog can be discharged by temperature-detecting device 703 on the side plate of feeding mouth 712 both sides and pressure test device 704 passes toward Controlling System.
Coke discharging cylinder 702 is less than the mean particle size of handled material with the gap 718 of housing 701, so most of material would not enter this gap 718, in addition because the arc surface at feed bin 716 interval seals together with defining between housing 701, pulverulent material and be less than material mean particle size material also because material and between arc surface and housing 701 effect of frictional force be difficult to by gap, ensure that the controllability of discharge.When temperature-detecting device 703 detects temperature of charge higher than set(ting)value, water coolant sprinkling mouth 709 just has and automatically sprays water coolant, makes material fall the water cooling be ejected in the process of discharge port 717 from feed bin 716, plays the effect supplementing cooling.
In order to ensure the homogeneity of discharge further, the lower end of the side plate 1 of feeding mouth 712, than the lower end of side plate 2 713 more close to the center of feeding mouth 712.After taking this measure, when coke discharging cylinder 702 rotates, material will insert feed bin 716 in the position of feeding mouth 712 approximate centerline, and the material of both sides, such destructive distillation room will be discharged with same speed, avoids the problem because the grog cooking level that causes of velocity of discharge inequality differs.
When generation " swollen material " accident or coke discharging cylinder 702 are blocked by foreign matter bottom destructive distillation room, the manhole cover 715 on feeding mouth 712 side plate two can be opened, detect in stove and equipment situation by access opening 714, be out of order side by side.Operate rear manhole cover 715 and covered access opening 714, prevent air from entering destructive distillation room.
As shown in Figure 5, be the structural representation of discharge device 28 described in the utility model.Discharge device 28 can replace conventional coke quenching device, and by remaining the mode that useless water and steam cools simultaneously, ensure furnace charge cooling evenly, quenching effect is better than traditional coke quenching device.In order to cool further to furnace charge, in furnace charge buffer storage 804, carry out second time cooling to furnace charge, cooling twice adopts water or steam to cool from the other end furnace charge, thus ensures the homogeneity of furnace charge cooling further.
In order to ensure that the cooled temperature of furnace charge reaches requirement, furnace charge refrigerating unit is provided with thermoelectricity on a rare occasion 815, thermoelectricity 815 is on a rare occasion multiple, be evenly arranged along furnace charge refrigerating unit 801 circumference, furnace charge buffer storage 804 is provided with thermopair 2 810, thermopair 2 810 is also multiple, is evenly arranged along furnace charge buffer storage 804 circumference.
The specific works process of discharge device two is: in external heat continuous shale oven, carry out powdery, bulk or the powdery after destructive distillation process and block mixture charge, enter in the furnace charge refrigerating unit 801 of lower portion of furnace body at high operating temperatures, by residue waste water, steam, furnace charge is once cooled; The flow of residue waste water or steam, according to thermoelectricity on a rare occasion 815 temperature datas recorded, is automatically regulated the variable valve on coke quenching water or coke quenching steam transport pipe by Controlling System, charge-temperature is down to less than 350 DEG C; After the temperature data of multiple thermoelectricity on a rare occasion measured by 815 all meets the requirements, Controlling System controls discharge control valve drive unit 812 and starts, drive discharge control valve 802 to open, furnace charge is discharged body of heater continuously, equably through discharge control valve 802 and is entered in furnace charge buffer storage 804.Withdrawal rate is controlled according to the material level in furnace charge buffer storage 804 automatically by Controlling System.
In furnace charge buffer storage 804, adopt water or steam to carry out cooling twice, adopt thermopair 2 810 to detect charge-temperature, adopt moisture on-line proofing unit 807 to detect furnace charge moisture, adopt high-order level gage 809 and low level level gage 808 to detect material level.Charge-temperature is down to less than 150 DEG C, finished product furnace charge moisture controlled is below 8.0%, and after reaching requirement, Controlling System controls quantitative blow-off valve drive unit 806 and starts, finished product furnace charge discharged by quantitative blow-off valve 805;
The gas produced in secondary cooling process is caused after purifying processing device carries out purifying treatment by the gas discharge outlet 811 on furnace charge buffer storage 804 and discharges, and cooling water circulation utilization, reduces the pollution of production process to environment.
Claims (5)
1. a low order fine coal continuous retorting device, comprises external heat continuous shale oven, charging system, natural gas gathering system and discharge device; It is characterized in that, described charging system is made up of double seal feeding device and material buffering chamber, and gas retort top is provided with the gas extractor stretched in the middle part of coking chamber, and discharge device is discharge device one or discharge device two; Discharge device one is primarily of coke discharging cylinder composition, and discharge device two is primarily of furnace charge refrigerating unit, discharge control valve, furnace charge buffer storage and quantitative blow-off valve composition.
2. a kind of low order fine coal continuous retorting device according to claim 1, it is characterized in that, the described opening for feed of double seal feeding device is connected with the discharge gate of raw material cabin, and discharge port is connected with the opening for feed of below material buffering chamber, and the discharge port of material buffering chamber stretches into body of heater destructive distillation indoor; Opening for feed and the discharge outlet of double seal feeding device are equipped with sealed gate, and its top is also provided with level gage.
3. a kind of low order fine coal continuous retorting device according to claim 1, it is characterized in that, described gas extractor is made up of bottom gas collection umbrella, gas collection road, top gas collection umbrella and gas collection road dredging pipe, bottom gas collection umbrella is made up of multiple fimbriatum connected by frustum bell and spigot frame, top gas collection umbrella is overall connectivity structure, be communicated with by gas collection road between bottom gas collection umbrella with top gas collection umbrella, gas collection umbrella side, top is by Flange joint upcast; Gas collection umbrella one end, top is provided with gas collection road dredging pipe, and gas collection road dredging pipe is the provided pipe be connected with drain cleaner.
4. a kind of low order fine coal continuous retorting device according to claim 1, it is characterized in that, described discharge device one is made up of housing, rotating shaft, coke discharging cylinder, supporting device and drive unit, coke discharging cylinder is connected with drive unit by rotating shaft, and supporting device is separately fixed at housing two ends and supporting shaft rotates; Establish housing outside coke discharging cylinder, housing upper is provided with the feeding mouth adapted with destructive distillation room bottom discharge mouth size, and lower housing portion establishes discharge port discharge port side plate to be provided with water coolant sprinkling mouth; Coke discharging cylinder along the circumferential direction arranges at least one elongated feed bin, and when feed bin number is greater than 1, the centerlines of adjacent feed bin is greater than the opening angle of feed bin.
5. a kind of low order fine coal continuous retorting device according to claim 1, it is characterized in that, described discharge device two comprises the furnace charge refrigerating unit, discharge control valve, furnace charge buffer storage and the quantitative blow-off valve that connect successively from top to bottom, and the side of described furnace charge refrigerating unit is provided with coke quenching steam interface, coke quenching water interface, thermoelectricity on a rare occasion; Furnace charge buffer storage side is provided with secondary cooling water interface or cooling twice vapor interface, high-order level gage, low level level gage, thermopair two, moisture on-line proofing unit and gas discharge outlet.
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| CN201520575230.0U CN204874400U (en) | 2015-08-03 | 2015-08-03 | Continuous dry distillation device of low order fine coal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105670706A (en) * | 2016-04-06 | 2016-06-15 | 吴桂香 | Pyrolyzing furnace with complete pyrolyzing rod |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105670706A (en) * | 2016-04-06 | 2016-06-15 | 吴桂香 | Pyrolyzing furnace with complete pyrolyzing rod |
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Effective date of registration: 20180808 Address after: 116085 128 high energy street, Qixian Ling high tech Industrial Park, Dalian, Liaoning Patentee after: ACRE Coking And Refractory (Dalian) Engineering Consulting Corp., MCC Address before: 116085 128 high energy street, Qixian Ling high tech Industrial Park, Dalian, Liaoning Patentee before: ACRE Coking and Refractory Engineering Consulting Corporation, MCC |