CN213866082U - Waste heat full-recovery gasification furnace - Google Patents
Waste heat full-recovery gasification furnace Download PDFInfo
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- CN213866082U CN213866082U CN202022424599.5U CN202022424599U CN213866082U CN 213866082 U CN213866082 U CN 213866082U CN 202022424599 U CN202022424599 U CN 202022424599U CN 213866082 U CN213866082 U CN 213866082U
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The utility model discloses a waste heat full recovery gasifier, include: a housing; the reaction chamber is provided with a first downward channel surrounded by a water-cooled wall of the reaction chamber; radiation waste pan sets up in the reacting chamber below, and radiation waste pan includes: the radiant screen comprises a plurality of radiant tube screens; the inner cylinder water-cooled wall and the radiation screen form a second descending channel together, and the second descending channel is communicated with the first descending channel; the outer cylinder water-cooled wall is arranged on the outer side of the inner cylinder water-cooled wall and forms an ascending channel with the inner cylinder water-cooled wall; the radiation screen is hung on the upper parts of the inner cylinder water-cooled wall and the outer cylinder water-cooled wall through a radiation screen hanging unit and is respectively connected with an inlet header of the radiation screen and an outlet header of the radiation screen; the flow equalizing chamber is communicated with an outlet of an ascending channel in the radiation waste boiler through a connecting channel and is communicated with the convection waste boiler; and the convection waste boiler is arranged below the flow equalizing chamber and is provided with a third descending channel communicated with the flow equalizing chamber. The utility model discloses can simplify the stringing design when reducing the overtemperature risk.
Description
Technical Field
The utility model relates to the technical field of coal gasification, in particular to a waste heat full-recovery gasification furnace.
Background
The entrained flow technology is one of the development directions of coal gasification technology, and the heat recovery mode of the entrained flow technology is divided into a full chilling process and a waste boiler process. Under the condition that the requirements of the state on energy efficiency indexes, environmental protection indexes and the like in modern coal chemical industry are increasingly improved, the advantages of the waste boiler type efficient energy-saving gasification technology are more and more obvious by a mode of recovering the heat of the high-temperature high-pressure synthesis gas and simultaneously producing high-temperature high-pressure steam as a byproduct.
According to different heat exchange types, the waste heat boiler can be divided into a radiation waste boiler, a convection waste boiler and a full-recovery waste boiler, wherein the radiation waste boiler is a main device for sensible heat utilization in a high-temperature section, the convection waste boiler is a main device for sensible heat utilization in a medium-temperature section, and the full waste boiler can simultaneously utilize sensible heat in the high-temperature section and the medium-temperature section.
Among them, the convection waste boiler represented by shell has already been commercialized to run, its convection waste boiler adopts the spiral coil pipe structure of the multi-layer stack, there are disadvantages such as the investment cost is high, design and manufacturing are complicated; the radiation waste boiler represented by the general purpose is characterized in that a convection waste boiler is eliminated, and the structural design of the radiation waste boiler and a chilling chamber is added, wherein a large number of radiation screens are arranged in the radiation waste boiler, heated tubes of the radiation screens are finally collected in a horizontal collection box in the boiler, the horizontal collection box is easy to accumulate ash and over-temperature, the tops of the radiation screens penetrate through pipes and are difficult to weld, and the like.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned problem that exists among the prior art, the utility model provides a waste heat full recovery gasifier of structure simplification design reduces the stringing design of simplifying when the overtemperature risk.
Therefore, the utility model provides a waste heat full recovery gasifier, include:
a housing; and the number of the first and second groups,
the reaction chamber is provided with a first downward channel surrounded by a water-cooled wall of the reaction chamber;
the radiation is useless, the radiation is useless and is set up in the reaction chamber below, the radiation is useless and is included:
the radiant screen comprises a plurality of radiant tube screens;
the inner cylinder water-cooled wall and the radiation screen form a second descending channel together, and the second descending channel is communicated with the first descending channel;
the outer cylinder water-cooled wall is arranged on the outer side of the inner cylinder water-cooled wall and forms an upward channel of high-temperature synthesis gas with the inner cylinder water-cooled wall;
the radiation screen is hung on the upper parts of the inner cylinder water-cooled wall and the outer cylinder water-cooled wall through a radiation screen hanging unit and is respectively connected with an inlet header of the radiation screen and an outlet header of the radiation screen, and the inlet header of the radiation screen and the outlet header of the radiation screen are both arranged in an annular space between the outer cylinder water-cooled wall and the radiation waste boiler shell;
the flow equalizing chamber is communicated with an outlet of an ascending channel in the radiation waste boiler through a connecting channel and is communicated with the convection waste boiler so as to realize the homogenization of the high-temperature synthesis gas;
and the convection waste boiler is arranged below the flow equalizing chamber and is provided with a third descending channel communicated with the flow equalizing chamber.
According to the utility model discloses an embodiment of used heat recovery gasifier entirely, the top of reacting chamber is provided with a plurality of top nozzle, and the outside of reacting chamber water-cooling wall is provided with the reacting chamber casing.
According to the utility model discloses an embodiment of used heat recovery gasifier entirely, radiation screen hangs the forging for the radiation screen who takes water-cooling of unit.
According to the utility model discloses an embodiment of waste heat full recovery gasifier, the import collection box of inner tube water-cooling wall and the import collection box of urceolus water-cooling wall all set up in the annular space between urceolus water-cooling wall and radiation waste boiler casing, avoid the overtemperature and the lime-ash deposit of thick wall collection box in the high temperature synthesis gas region, the import collection box of inner tube water-cooling wall and the import collection box of urceolus water-cooling wall are connected with inner tube water-cooling wall and urceolus water-cooling wall through K type pipe respectively.
According to the utility model discloses an embodiment of used heat recovery gasifier entirely, the water-cooling wall export collection case of inner tube water-cooling wall and urceolus water-cooling wall sets up in the top of inner tube water-cooling wall and urceolus water-cooling wall and sets up to the import collection case that is higher than the import collection case of inner tube water-cooling wall and urceolus water-cooling wall, the export collection case of radiation screen also sets up in the radiation screen top and sets up to the import collection case that is higher than the radiation screen.
According to the utility model discloses an embodiment of used heat full recovery gasifier, the radiation is useless still including setting up the slag bath in radiation useless pot bottom.
According to the utility model discloses an embodiment of waste heat full recovery gasifier, the refractory lining has been laid to the inner wall of flow equalizing chamber, the flow equalizing chamber has enlarged flow equalizing chamber.
According to the utility model discloses an embodiment of used heat full recovery gasifier, be provided with the coiled pipe heating surface in the convection current waste boiler, the coiled pipe heating surface is arranged in the third downstream channel.
According to the utility model discloses an embodiment of used heat full recovery gasifier, still be provided with in the convection current waste heat boiler and blow the soot unit, it arranges entry position and middle part position at the coiled pipe heating surface to blow the soot unit.
According to the utility model discloses an embodiment of waste heat full recovery gasifier, third down passageway is enclosed by the water-cooling wall and links to each other with the gasifier synthetic gas export of convection current waste boiler bottom.
The waste heat full-recovery gasification furnace adopts the radiation screen design of a suspension structure in the radiation waste boiler through simplifying the design, and the inlet and outlet collection boxes of the radiation screen and the inlet collection boxes of the inner and outer cylinder water-cooled walls are arranged in an annular space, so that the ash accumulation and the thick-wall collection boxes can be prevented from being damaged by over-temperature heating in the furnace, and the top pipe arrangement design of the radiation chamber is simplified; the double-cylinder water-cooled wall heating surface is adopted, so that the quantity of radiation screens is reduced, slag blockage is avoided, and meanwhile, the heat of high-temperature synthesis gas is absorbed by the added cylinder water-cooled wall heating surface; in the convection waste boiler, a soot blowing unit is simultaneously configured by adopting a heating pipe structure of a serpentine pipe, and the heating surface of the serpentine pipe is simple in design and convenient to manufacture; meanwhile, a large-space refractory brick flow equalizing chamber is arranged at an inlet of the convection waste boiler, and high-temperature flue gas discharged from the radiation waste boiler carries a large amount of solid particles such as fly ash and the like into the flow equalizing chamber, so that the temperature of a high-temperature synthetic gas flow field and the distribution of the fly ash particles are uniform, and the local abrasion to a heating surface in the convection waste boiler is reduced.
Drawings
Fig. 1 shows a schematic structural view of a waste heat full recovery gasifier according to an exemplary embodiment of the present invention.
Fig. 2 shows a schematic cross-sectional structure diagram of a radiant waste boiler in a waste heat total recovery gasifier according to an exemplary embodiment of the present invention.
Description of reference numerals:
1-a reaction chamber, 2-a radiation waste boiler, 3-a convection waste boiler, 4-a flow equalizing chamber, 5-a reaction chamber water-cooled wall, 6-a top burner, 7-a shell, 8-an inner cylinder water-cooled wall, 9-an outer cylinder water-cooled wall, 10-a radiation screen, 11-a radiation screen suspension unit, 12-an inlet and outlet header of the radiation screen, 13-an inlet header of the inner cylinder water-cooled wall, 14-an inlet header of the outer cylinder water-cooled wall, 15-an outlet header of the water-cooled wall, 16-K type tubes, 17-a sealing partition plate, 18-a slag pool, 19-a connecting channel, 20-a refractory lining, 21-a soot blowing unit, 22-a coiled tube heating surface and 23-a gasifier synthesis gas outlet.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Fig. 1 shows a schematic structural view of a waste heat full recovery gasifier according to an exemplary embodiment of the present invention.
As shown in fig. 1, according to an exemplary embodiment of the present invention, the waste heat full-recovery gasification furnace includes a housing 7, a reaction chamber 1, a radiation waste boiler 2, a flow equalizing chamber 4 and a convection waste boiler 3, wherein the waste boiler is a waste heat boiler. The reaction chamber 1 is a main component of coal gasification, synthesis gas generated in the reaction chamber 1 flows downwards to enter a radiation waste boiler 2 for heat recovery, ash in the synthesis gas enters a slag pool, the synthesis gas which recovers most of heat enters a flow-equalizing chamber 4 through a return type ascending channel formed by an inner cylinder water-cooled wall 8 and an outer cylinder water-cooled wall 9 and then enters a convection waste boiler 3 after being uniformly distributed, and the synthesis gas is sent out of the gasification furnace after further heat exchange.
According to the utility model discloses, casing 7 arranges outside the gasifier, for example including reaction chamber casing, radiation waste pot casing, the homoflow room casing and convection current waste pot casing.
Specifically, the reaction chamber 1 of the present invention has a first downward channel surrounded by a reaction chamber water wall 5. Preferably, a plurality of top burners 6 are arranged on the top of the reaction chamber 1, and a reaction chamber shell is arranged on the outer side of the reaction chamber water-cooled wall 5. The pulverized coal is sprayed out of the top burner 6, the top burner adopts an ignition start-up gasification integrated burner, the arrangement of side burners can be reduced, high-temperature heat generated by the burner is absorbed by the water-cooled wall 5 of the reaction chamber, and high-temperature synthesis gas enters the radiation waste boiler 2 after going downwards.
The utility model discloses a radiation waste pot 2 sets up in 1 below of reacting chamber, and radiation waste pot 1 includes radiation screen 10, inner tube water-cooling wall 8 and urceolus water-cooling wall 9, and radiation screen 10, inner tube water-cooling wall 8 and urceolus water-cooling wall 9 all retrieve the synthetic gas heat as the heating surface of radiation waste pot, and the inner tube water-cooling wall 8 and the urceolus water-cooling wall 9 of arranging can increase the heated area and form the formula fluid passage that turns back of high temperature synthetic gas. And, the radiation waste pan 1 further comprises a slag pool 18 arranged at the bottom of the radiation waste pan to receive ash.
Fig. 2 shows a schematic cross-sectional structure diagram of a radiant waste boiler in a waste heat total recovery gasifier according to an exemplary embodiment of the present invention.
As shown in fig. 2, the radiant panel 1 includes a plurality of radiant tube panels, the number of radiant tube panels and the number of water paths connected in parallel to each panel can be determined according to the process requirements, and each radiant tube panel is preferably arranged in the radial direction of the radiation waste boiler. The inner cylinder water-cooled wall 8 and the radiation screen 10 together form a second descending channel, and the second descending channel is communicated with the first descending channel, so that the high-temperature synthesis gas from the reaction chamber 1 can exchange heat downwards through the second descending channel. The outer cylinder water-cooled wall 9 is arranged on the outer side of the inner cylinder water-cooled wall 8 and forms an ascending channel with the inner cylinder water-cooled wall 8 for ascending heat exchange of the synthesis gas after heat exchange.
Further, the utility model discloses a radiation screen 10 hangs the weight of whole radiation screen 10 on the upper portion of inner tube water-cooling wall 8 and urceolus water-cooling wall 9 and is connected respectively with the exit collection case 12 of radiation screen through radiation screen suspension unit 11, and the exit collection case 12 of radiation screen all sets up in the annular space between urceolus water-cooling wall 9 and the radiation waste boiler casing.
The radiation screen suspension unit 11 is preferably a water-cooled radiation screen suspension forging, and the suspension arrangement can avoid the problems that the radiation screen 10 penetrates through a pipe caused by the top of a radiation waste boiler, the pipe is complicated, the manufacturing and welding are difficult, and the like. The radiation screen inlet and outlet header 12 is located in the annular space, so that deposition of ash slag on the synthesis gas side of the radiation waste boiler and overtemperature and corrosion of the thick-wall header can be avoided. Preferably, the inlet header 13 of the inner tube water-cooled wall and the inlet header 14 of the outer tube water-cooled wall are both arranged in an annular space between the outer tube water-cooled wall 9 and the radiation waste boiler shell, and the inlet header 14 of the inner tube water-cooled wall and the inlet header 14 of the outer tube water-cooled wall are respectively connected with the inner tube water-cooled wall 8 and the outer tube water-cooled wall 9 through K-type tubes 16, so that the deposition of ash slag on the synthesis gas side and the overtemperature and corrosion of the thick-walled header caused by the arrangement of the inlet headers in the boiler are avoided.
And, in order to realize the counter-current heat exchange, the water wall outlet header 15 of the inner tube water wall 8 and the outer tube water wall 9 is disposed above the inner tube water wall 8 and the outer tube water wall 9 and is disposed higher than the inlet header 13 of the inner tube water wall and the inlet header 14 of the outer tube water wall, and the outlet header of the radiation screen 10 is also disposed above the radiation screen 10 and is disposed higher than the inlet header of the radiation screen 10.
Most of the ash in the high-temperature synthesis gas can fall into the slag pool 18 through the second descending channel, the high-temperature synthesis gas with part of the ash removed goes back upwards and enters the ascending channel formed between the outer cylinder water-cooled wall 9 and the inner cylinder water-cooled wall 8, the high-temperature synthesis gas absorbs heat again by the inner and outer cylinder water-cooled walls, then is further cooled, and then enters the flow equalizing chamber 4.
The utility model discloses a room 4 flow equalizes through the last passageway export intercommunication of 19 and the useless pot 2 of radiation and with the homogenization of the useless pot intercommunication of convection current in order to realize high temperature synthetic gas of interface channel, should go upward the passageway export and set up the last lateral part at the useless pot of radiation preferentially, and the inner wall of room 4 flow equalizes has laid refractory lining 20, and room 4 flow equalizes has expanded flow equalizing chamber. The refractory lining 20 arranged in the flow equalizing chamber 4 can avoid the heat loss of the high-temperature synthesis gas, and meanwhile, the arrangement of the flow equalizing chamber 4 can ensure that the fly ash particles in the high-temperature synthesis gas are uniformly distributed and the temperature of the flow field is uniformly distributed, reduce the local abrasion to the heating surface in the convection waste boiler and be beneficial to the subsequent treatment of the convection waste boiler.
The utility model discloses a useless pot 3 of convection current then sets up in the room 4 below of flow equalizing and be provided with the third down passageway of the room 4 intercommunication of flow equalizing, and the synthetic gas that comes from the room 4 of flow equalizing gets into the room 4 of flow equalizing and flows out the gasification furnace again after carrying out the heat transfer. Wherein, the convection waste boiler 3 is provided with a coiled pipe heating surface 22, the coiled pipe heating surface 22 is arranged in the third descending channel, and compared with a spiral coil, the coiled pipe heating surface 22 has the advantages of simple design, convenient manufacture and the like. After the synthesis gas from the flow equalizing chamber 4 enters, the local abrasion scouring of the heating surface 22 of the coiled pipe can be reduced, and the local over-temperature risk of the heating surface 22 of the coiled pipe is reduced.
In order to prevent the fly ash particles from accumulating on the top of the horizontal portion of the bundle of heating surfaces of the serpentine tubes, soot blowing units 21 are further provided in the convection waste boiler 3, and the soot blowing units 21 are disposed at the inlet position and the central position of the heating surfaces 22 of the serpentine tubes for effective soot blowing during the operation of the gasifier. And a third downward channel in the convection waste boiler 3 is surrounded by a water-cooled wall and is connected with a gasifier synthesis gas outlet 23 at the bottom of the convection waste boiler, and low-temperature synthesis gas after heat exchange in the convection waste boiler 3 is sent out of the gasifier through the gasifier synthesis gas outlet 23.
Compared with the prior waste heat full-recovery gasification furnace structure, the utility model discloses pass the radiation screen through the radiation screen suspension unit the method of the straight section of thick bamboo upper portion position of interior urceolus water-cooling wall, avoid the radiation screen pass the radiation waste pot top cause wear tube and let the pipe numerous, make weld difficult scheduling problem; the heating area is increased by arranging the inner cylinder water-cooled wall and the outer cylinder water-cooled wall, and a high-temperature synthesis gas return type fluid channel is formed; the inlet and outlet collection boxes of the radiation screen are arranged in the annular space, so that the deposition of ash slag on the flue gas side of the radiation waste boiler and the overtemperature of the thick-wall collection box can be avoided; the inner cylinder water-cooled wall inlet header and the outer cylinder water-cooled wall inlet header are connected with the inner and outer cylinder water-cooled walls through K-shaped pipes, so that the deposition of ash on the synthesis gas side and the overtemperature and corrosion of the thick-wall header caused by the arrangement of the inlet and outlet headers in the furnace are avoided; by arranging the flow equalizing chamber, fly ash particles in high-temperature synthesis gas from the radiation waste boiler are uniformly distributed, the temperature of a flow field is uniformly distributed, the local abrasion and washing of the heating surface of the coiled pipe in the convection waste boiler are reduced, and the local overtemperature risk of the coiled pipe is reduced.
The invention is not limited to the specific embodiments described above, but extends to any novel feature or any novel combination of features disclosed herein, or to any novel method or process steps or any novel combination of steps disclosed herein.
Claims (10)
1. A waste heat full recovery gasification furnace is characterized by comprising:
a housing; and the number of the first and second groups,
the reaction chamber is provided with a first downward channel surrounded by a water-cooled wall of the reaction chamber;
the radiation is useless, the radiation is useless and is set up in the reaction chamber below, the radiation is useless and is included:
the radiant screen comprises a plurality of radiant tube screens;
the inner cylinder water-cooled wall and the radiation screen form a second descending channel together, and the second descending channel is communicated with the first descending channel;
the outer cylinder water-cooled wall is arranged on the outer side of the inner cylinder water-cooled wall and forms an upward channel of high-temperature synthesis gas with the inner cylinder water-cooled wall;
the radiation screen is hung on the upper parts of the inner cylinder water-cooled wall and the outer cylinder water-cooled wall through a radiation screen hanging unit and is respectively connected with an inlet header of the radiation screen and an outlet header of the radiation screen, and the inlet header of the radiation screen and the outlet header of the radiation screen are both arranged in an annular space between the outer cylinder water-cooled wall and the radiation waste boiler shell;
the flow equalizing chamber is communicated with an outlet of an ascending channel in the radiation waste boiler through a connecting channel and is communicated with the convection waste boiler so as to realize the homogenization of the high-temperature synthesis gas;
and the convection waste boiler is arranged below the flow equalizing chamber and is provided with a third descending channel communicated with the flow equalizing chamber.
2. The waste heat full-recovery gasification furnace according to claim 1, wherein a plurality of top burners are arranged at the top of the reaction chamber, and a reaction chamber shell is arranged on the outer side of the water-cooled wall of the reaction chamber.
3. The waste heat full-recovery gasification furnace according to claim 1, wherein the radiation screen suspension unit is a water-cooled radiation screen suspension forging.
4. The waste heat full-recovery gasification furnace according to claim 1, wherein the inlet header of the inner tube water-cooled wall and the inlet header of the outer tube water-cooled wall are both disposed in an annular space between the outer tube water-cooled wall and the radiation waste boiler shell, and the inlet header of the inner tube water-cooled wall and the inlet header of the outer tube water-cooled wall are respectively connected with the inner tube water-cooled wall and the outer tube water-cooled wall through K-type tubes.
5. The waste heat all-recovery gasifier of claim 1, wherein the water wall outlet headers of the inner and outer drum water walls are disposed above the inner and outer drum water walls and are disposed higher than the inlet headers of the inner and outer drum water walls, and the outlet header of the radiation screen is also disposed above the radiation screen and is disposed higher than the inlet header of the radiation screen.
6. The waste heat full-recovery gasification furnace according to claim 1, wherein the radiation waste pot further comprises a slag pool arranged at the bottom of the radiation waste pot.
7. The waste heat full-recovery gasification furnace according to claim 1, wherein the inner wall of the flow equalizing chamber is paved with a refractory lining, and the flow equalizing chamber is provided with an expanded flow equalizing cavity.
8. The waste heat full recovery gasifier of claim 1, wherein a serpentine heating surface is disposed in the convection waste pot, the serpentine heating surface being disposed in the third down pass.
9. The waste heat full-recovery gasification furnace according to claim 8, wherein soot blowing units are further provided in the convection waste pot, and the soot blowing units are arranged at an inlet position and a middle position of the heating surface of the serpentine pipe.
10. The waste heat full-recovery gasifier according to claim 1, wherein the third downgoing channel is surrounded by water-cooled walls and is connected to the gasifier syngas outlet at the bottom of the convection waste pot.
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| CN202022424599.5U CN213866082U (en) | 2020-10-27 | 2020-10-27 | Waste heat full-recovery gasification furnace |
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| CN202022424599.5U CN213866082U (en) | 2020-10-27 | 2020-10-27 | Waste heat full-recovery gasification furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113776346A (en) * | 2021-10-18 | 2021-12-10 | 青岛维舍环保新能源科技有限公司 | Heat energy recovery gasification and metallurgy integrated device |
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2020
- 2020-10-27 CN CN202022424599.5U patent/CN213866082U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113776346A (en) * | 2021-10-18 | 2021-12-10 | 青岛维舍环保新能源科技有限公司 | Heat energy recovery gasification and metallurgy integrated device |
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