CN217077509U - Boiler steam pyrolysis coal system of thermal power plant - Google Patents
Boiler steam pyrolysis coal system of thermal power plant Download PDFInfo
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- CN217077509U CN217077509U CN202122339527.5U CN202122339527U CN217077509U CN 217077509 U CN217077509 U CN 217077509U CN 202122339527 U CN202122339527 U CN 202122339527U CN 217077509 U CN217077509 U CN 217077509U
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Abstract
The utility model relates to a pyrolysis coal technical field specifically is a boiler steam pyrolysis coal system of thermal power plant includes the boiler, the hot steam outlet of top fixedly connected with of boiler, a plurality of first through-holes have been seted up to one side of boiler, and is a plurality of first through-hole is circumference evenly distributed, two support piece of bottom fixedly connected with of boiler, one side fixedly connected with boiler lid of boiler, a plurality of second through-holes have been seted up to one side of boiler lid, and is a plurality of the second through-hole is circumference evenly distributed, the fresh air inlet has been seted up at the middle part of boiler lid. The utility model has the advantages that: among most's the device, the mount does not have effectual fixed coal gas tar purification and separation device, at coal gas tar purification and separation device, the in-process of work produces vibrations easily, and most's mount does not have the absorbing effect, and the backup pad in this support frame holds the support coal gas tar purification and separation device that can relax through four supports.
Description
Technical Field
The utility model relates to a pyrolysis coal technical field, especially a boiler steam pyrolysis coal system of thermal power plant.
Background
Researches show that high oil gas resources exist in the low metamorphic coal, so that the utilization efficiency of the low metamorphic coal can be improved by the coal pyrolysis technology, the external petroleum dependence and natural gas gaps of China can be relieved by pyrolysis products of coal tar and pyrolysis coal gas, the energy safety and economic development of China are guaranteed, a plurality of coal pyrolysis processes are provided, product schemes are different, and the low metamorphic coal can be classified according to different methods according to operation conditions, types of heat carriers, heating modes and raw material operation states.
Most pyrolysis coal system work efficiency is not high, and inside filter equipment can not dismantle completely because can not dismantle filter equipment completely and clear up, and the too unable high efficiency work of laying dust simultaneously, so this is novel to above problem improve.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's shortcoming, provide a boiler steam pyrolysis coal system of thermal power plant.
The purpose of the utility model is realized through the following technical scheme: a steam coal pyrolyzing system for a boiler of a thermal power plant comprises the boiler, wherein a hot steam outlet is fixedly connected to the top of the boiler, a plurality of first through holes are formed in one side of the boiler and are uniformly distributed in a circumferential manner, two supporting pieces are fixedly connected to the bottom of the boiler, a boiler cover is fixedly connected to one side of the boiler, a plurality of second through holes are formed in one side of the boiler cover and are uniformly distributed in a circumferential manner, an air inlet hole is formed in the middle of the boiler cover, an air inlet pipeline is fixedly connected to the inside of the air inlet hole, a plurality of first positioning holes are formed in one side of the air inlet pipeline, a regeneration steam hole is formed in one side of the boiler, a sealing cover is fixedly connected to one side of the air inlet pipeline, a rotary machine is fixedly connected to the middle of one side of the sealing cover on one side of the sealing cover, and a first connecting pipe is fixedly connected to the inside of the hot steam outlet, the middle part of first connecting pipe is provided with first control valve, one side fixed connection that the hot steam export was kept away from to first connecting pipe is in pyrolysis device, the inside fixedly connected with second connecting pipe in regeneration steam hole, there is the second control valve at the middle part of second connecting pipe, one side fixed connection that regeneration steam hole was kept away from to the second connecting pipe is in pyrolysis device, a plurality of second locating holes have been seted up to one side of sealed lid, and is a plurality of the second locating hole is circumference evenly distributed.
Optionally, a hot steam inlet is formed in the top of the thermal decomposition device, a hot steam pipeline is fixedly connected to the inside of the hot steam port, a cinder discharge hole is formed in the bottom of the thermal decomposition device, a cinder discharge pipeline is fixedly connected to the inside of the cinder discharge hole, a raw gas outlet is formed in one side of the thermal decomposition device, a raw gas through pipe is fixedly connected to the inside of the raw gas outlet, a third control valve is arranged in the middle of the raw gas through pipe, one side of the raw gas through pipe, away from the raw gas outlet, of the raw gas through pipe is fixedly connected with a gas tar purification and separation device, the top of the hot steam pipeline is fixedly connected to one side, away from the hot steam outlet, of the first connecting pipe, a regenerated steam inlet is formed in one side of the thermal decomposition device, and the inside of the regenerated steam inlet is fixedly connected to the second connecting pipe.
Optionally, the inside fixedly connected with mount of coal gas tar purification separator, the top fixedly connected with four joint posts of mount, four the joint post is circumference evenly distributed, the mount has the filter screen through joint post joint, four joint holes have been seted up at the top of filter screen, four the joint hole is circumference evenly distributed, the inside both sides fixedly connected with separator of the mount of keeping away from of coal gas tar purification separator, the bottom fixedly connected with support frame of coal gas tar purification separator, raw coal gas inlet has been seted up to one side of coal gas tar purification separator, the inside fixedly connected with raw coal gas siphunculus of raw coal gas inlet, coal gas outlet has been seted up to the opposite side of coal gas tar purification separator, the inside fixedly connected with coal gas outlet pipe that coal gas outlet was bored.
Optionally, a plurality of first fixing holes are formed in the top of the gas tar purification and separation device and are circumferentially and uniformly distributed, a fixing cover is fixedly connected to the top of the gas tar purification and separation device, a plurality of second fixing holes are formed in the periphery of the top of the fixing cover and are circumferentially and uniformly distributed, the shape and size of each first positioning hole are matched with those of each second positioning hole, and the gas tar purification and separation device is fixedly connected with the fixing cover through bolts.
Optionally, the support frame includes the backup pad, the top fixedly connected with mounting of backup pad, four support columns of bottom fixedly connected with of backup pad, four the support column is symmetrical evenly distributed.
Optionally, the output end of the rotating machine is fixedly connected with a rotating rod, one side of the outer surface of the rotating rod is fixedly connected with a plurality of fan blades, and the fan blades are evenly distributed on the circumference.
Optionally, the position and size of the first through hole are matched with the position and size of the second through hole, and the boiler cover are fixedly connected through bolts.
Optionally, the position and size of the first positioning hole are matched with those of the second positioning hole, and the air pipeline is fixedly connected with the sealing cover through a bolt.
The utility model has the advantages of it is following:
1. in the device of great majority, the mount does not have effectual fixed coal gas tar purification and separation device, at coal gas tar purification and separation device, the in-process of work produces vibrations easily, the mount of great majority does not have absorbing effect, the backup pad in this support frame supports the support coal gas tar purification and separation device that can relax through four, the shape and the big or small looks adaptation of size and coal gas tar purification and separation device of mounting, the mounting is fixed around coal gas tar purification and separation device, can effectually prevent that coal gas tar purification and separation device from taking place the shake in the operation process like this, lead to coal gas tar purification and separation device's offset, also play the shock attenuation effect.
2. Because only one separator just so lets coal gas tar purification separator's work efficiency greatly reduced among most coal gas tar purification separator, because coal gas tar purification separator's work efficiency reduces, lead to pyrolysis device also can not normally work, if pyrolysis device need normal work just need wait to finish with tar separation to coal gas among the coal gas tar purification separator, the reduction that whole device is just great like this, the purification separation of coal gas and tar has been improved greatly to two separators among the coal gas tar purification separator in this device, the problem of work efficiency low has been solved.
3. The filter screen in the gas tar purification and separation device is used for filtering impurities generated by the separator separating tar and gas, most of the filter devices in the gas tar purification and separation device are not disassembled and cleaned well, so that the impurities accumulated in the filter devices are excessive, the filter devices cannot normally operate, and the fixing frame in the gas tar purification and separation device is provided with the clamping column which is matched with the clamping hole in the filter screen, so that the filter screen is very convenient to disassemble.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the explosion structure of the gas and tar purifying and separating device of the present invention;
FIG. 3 is a schematic structural view of the boiler of the present invention;
FIG. 4 is a schematic structural view of the thermal decomposition device of the present invention;
fig. 5 is a schematic structural view of the transfer machine of the present invention.
In the figure: 1-boiler, 101-hot steam outlet, 102-first through hole, 103-support piece, 104-boiler cover, 105-second through hole, 106-second positioning hole, 107-air inlet pipe, 108-first positioning hole, 109-regenerated steam hole, 110-sealing cover, 2-rotary machine, 201-rotary rod, 202-fan blade, 3-first connecting pipe, 4-first control valve, 5-thermal decomposition device, 501-regenerated steam inlet hole, 502-hot steam pipe, 503-cinder outlet hole, 504-cinder discharge pipe, 505-raw gas outlet hole, 506-raw gas pipe, 507-third control valve, 6-second connecting pipe, 7-second control valve, 8-tar gas purification and separation device, 801-a fixing frame, 802-a clamping column, 803-a filter screen, 804-a clamping hole, 805-a separator, 806-a raw gas inlet hole, 807-a gas outlet pipe, 809-a first fixing hole, 810-a fixing cover, 811-a second fixing hole, 9-a supporting frame, 901-a supporting plate, 902-a fixing piece and 903-a supporting column.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.
As shown in fig. 1-5, a coal pyrolyzing system by steam from a boiler of a thermal power plant comprises a boiler 1, a hot steam outlet 101 is fixedly connected to the top of the boiler 1, a plurality of first through holes 102 are formed in one side of the boiler 1, the first through holes 102 are evenly distributed in the circumferential direction, two supporting members 103 are fixedly connected to the bottom of the boiler 1, a boiler cover 104 is fixedly connected to one side of the boiler 1, a plurality of second through holes 105 are formed in one side of the boiler cover 104, the second through holes 105 are evenly distributed in the circumferential direction, an air inlet hole is formed in the middle of the boiler cover 104, an air inlet pipe 107 is fixedly connected to the inside of the air inlet hole, a plurality of first positioning holes 108 are formed in one side of the air inlet pipe 107, a regenerated steam hole 109 is formed in one side of the boiler 1, a sealing cover 110 is fixedly connected to one side of the air inlet pipe 107, a rotary machine 2 is fixedly connected to the middle of one side of the sealing cover 110, a first connecting pipe 3 is fixedly connected to the inside of the hot steam outlet 101, a first control valve 4 is arranged in the middle of the first connecting pipe 3, hot steam generated in the boiler is introduced into the thermal decomposition device 5 through the first connecting pipe 3 through a hot steam outlet 101, the control valve 4 controls the steam passing through the first connecting pipe 3 not to flow into the thermal decomposition device 5 as the hot steam, one side far away from the hot steam outlet 101 is fixedly connected to the thermal decomposition device 5, a second connecting pipe 6 is fixedly connected to the inside of a regeneration steam hole 109, a second control valve 7 is arranged in the middle of the second connecting pipe 6, one side of the second connecting pipe 6 far away from the regeneration steam hole 109 is fixedly connected to the thermal decomposition device 5, the regeneration steam enters the second connecting pipe 5 through the regeneration steam hole 109, the second control valve 7 on the outer surface of the second first connecting pipe 5 controls the required regeneration steam, and then one side entering the thermal decomposition device 5 with a plurality of second positioning holes 106 are arranged on one side of a sealing cover 110, the second positioning holes 106 are circumferentially and uniformly distributed.
As an optimal technical solution of the utility model: a hot steam inlet is formed in the top of the thermal decomposition device 5, a hot steam pipeline 502 is fixedly connected inside the hot steam inlet, a cinder discharge hole 503 is formed in the bottom of the thermal decomposition device 5, a cinder discharge pipeline 504 is fixedly connected inside the cinder discharge hole 503, a raw gas outlet 505 is formed in one side of the thermal decomposition device 5, which is to be discharged from the coal cinder discharge pipeline 504, of phenanthrene cinder generated after thermal decomposition of coal is finished, a raw gas through pipe 506 is fixedly connected inside the raw gas outlet 505, a third control valve 507 is arranged in the middle of the raw gas through pipe 506, a gas tar purification and separation device 8 is fixedly connected to one side, away from the raw gas outlet 505, of the raw gas through pipe 506, the raw gas generated after thermal decomposition is required to enter the gas tar purification and separation device 8 through the light gas hollow pipe 506 for separation, the top of the hot steam pipeline 502 is fixedly connected to one side, away from the hot steam outlet 101, of the first connecting pipe 3, a regeneration steam inlet hole 501 is formed at one side of the pyrolysis device 5, and the interior of the regeneration steam inlet hole 501 is fixedly connected to the second connecting pipe 6.
As an optimal technical solution of the utility model: the inside of the gas tar purification and separation device 8 is fixedly connected with a fixing frame 801, the top of the fixing frame 801 is fixedly connected with four clamping columns 802, the four clamping columns 802 are uniformly distributed on the circumference, the fixing frame 801 is clamped with a filter screen 803 through the clamping columns 802, the filter screen 803 in the gas tar purification and separation device 8 is used for filtering impurities generated by a separator 805 when separating tar and gas, most of the filter devices in the gas tar purification and separation device 8 are not well disassembled and cleaned, thus the accumulated impurities in the filter devices are excessive, the filter devices cannot normally operate, the fixing frame 801 in the gas tar purification and separation device 8 is provided with the clamping columns 802 which are matched with clamping holes 804 in the filter screen 803, so the gas tar purification and separation device is very convenient when the filter screen 803 needs to be disassembled, and the top of the filter screen 803 is provided with four clamping holes 804, the four clamping holes 804 are evenly distributed on the circumference, the two sides of the inside of the gas tar purification and separation device 8 far away from the fixing frame 801 are fixedly connected with the separators 805, because only one separator 805 in most of the gas tar purification and separation devices 8 greatly reduces the working efficiency of the gas tar purification and separation device 8, because the working efficiency of the gas tar purification and separation device 8 is reduced, the thermal decomposition device 5 can not work normally, if the thermal decomposition device 5 needs to work normally, the separation of the gas and the tar in the gas tar purification and separation device 8 is finished, so the working efficiency of the whole device is greatly reduced, the two separators 805 in the gas tar purification and separation device 8 in the device greatly improves the purification and separation of the gas and the tar, the problem of low working efficiency is solved, the bottom of the gas tar purification and separation device 8 is fixedly connected with the supporting frame 9, one side of the gas tar purification and separation device 8 is provided with a raw gas inlet 506, the raw gas inlet 807 is fixedly connected with a raw gas through pipe 406 inside, the other side of the gas tar purification and separation device 8 is provided with a gas outlet, and the inside of the gas outlet is fixedly connected with a gas outlet pipe 807.
As an optimal technical solution of the utility model: a plurality of first fixed holes 809 are seted up at the top of coal gas tar purification and separation device 8, a plurality of first fixed holes 809 are circumference evenly distributed, the top fixedly connected with fixed lid 810 of coal gas tar purification and separation device 8, a plurality of second fixed holes 811 have been seted up all around fixed lid top 810, a plurality of second fixed holes 811 are circumference evenly distributed, the shape and the size of first locating hole 809 and the shape and the size looks adaptation of second locating hole 811, coal gas tar purification and separation device 8 and fixed lid 810 pass through bolt fixed connection.
As an optimal technical solution of the utility model: the supporting frame 9 comprises a supporting plate 901, a fixing part 902 is fixedly connected to the top of the supporting plate 901, four supporting columns 903 are fixedly connected to the bottom of the supporting plate 901, the four supporting columns 903 are symmetrically and uniformly distributed, in most devices, the fixing frame does not have an effective fixed coal gas tar purifying and separating device 8, in the coal gas tar purifying and separating device 8, vibration is easily generated in the working process, most fixing frames do not have a damping effect, the supporting plate 901 in the supporting frame 9 can easily support the coal gas tar purifying and separating device 8 through the four supporting columns 903, the shape and the size of the fixing part 902 are matched with the shape and the size of the coal gas tar purifying and separating device 8, and the fixing part 902 is fixed around the coal gas tar purifying and separating device 8, so that the coal gas tar purifying and separating device 8 can be effectively prevented from shaking in the operation process, the position of the coal gas tar purification and separation device 8 is deviated, and the damping effect is also achieved.
As an optimal technical solution of the utility model: the output end of the rotating machine 2 is fixedly connected with a rotating rod 201, one side of the outer surface of the rotating rod 201 is fixedly connected with a plurality of fan blades 202, and the fan blades 202 are uniformly distributed in the circumferential direction.
As an optimal technical solution of the utility model: the position and size of the first through hole 102 are matched with those of the second through hole 105, and the boiler 1 and the boiler cover 104 are fixedly connected through bolts.
As an optimal technical solution of the utility model: the position and the size of the first positioning hole 108 are matched with those of the second positioning hole 106, and the wind pipe 107 is fixedly connected with the sealing cover 110 through bolts.
In summary, the following steps: in most devices, the fixing frame does not have an effective fixed gas tar purifying and separating device 8, the gas tar purifying and separating device 8 is easy to vibrate in the working process, most fixing frames do not have the damping effect, the supporting plate 901 in the supporting frame 9 can easily support the gas tar purifying and separating device 8 through four supporting columns 903, the shape and the size of the fixing piece 902 are matched with those of the gas tar purifying and separating device 8, and the fixing piece 902 is fixed around the gas tar purifying and separating device 8, so that the gas tar purifying and separating device 8 can be effectively prevented from shaking in the operation process, the position deviation of the gas tar purifying and separating device 8 is caused, the damping effect is also achieved, the purifying and separating of gas and tar are greatly improved by two separators 805 in the gas tar purifying and separating device 8, because only one separator 805 in most of the gas and tar purifying and separating devices 8 greatly reduces the working efficiency of the gas and tar purifying and separating devices 8, the thermal decomposition device 5 cannot work normally due to the reduction of the working efficiency of the gas and tar purifying and separating devices 8, if the thermal decomposition device 5 needs to work normally, the working efficiency of the whole device is greatly reduced until the gas and tar in the gas and tar purifying and separating devices 8 are separated, the filter screen 803 in the gas and tar purifying and separating device 8 is used for filtering impurities generated by tar and gas in the separator 805, most of the filter devices in the gas and tar purifying and separating devices 8 cannot be disassembled and cleaned well, so that the impurities accumulated in the filter devices are excessive, the filter devices cannot operate normally, and the fixing frame 801 in the gas and tar purifying and separating device 8 is provided with the clamping column 802, is matched with the clamping hole 804 in the filter screen 803, so the filter screen 803 is very convenient to disassemble.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a boiler steam pyrolysis coal system of thermal power plant which characterized in that: comprises a boiler (1), a hot steam outlet (101) is fixedly connected to the top of the boiler (1), a plurality of first through holes (102) are formed in one side of the boiler (1), the first through holes (102) are uniformly distributed on the circumference, two supporting pieces (103) are fixedly connected to the bottom of the boiler (1), a boiler cover (104) is fixedly connected to one side of the boiler (1), a plurality of second through holes (105) are formed in one side of the boiler cover (104), the second through holes (105) are uniformly distributed on the circumference, an air inlet hole is formed in the middle of the boiler cover (104), an air inlet pipeline (107) is fixedly connected to the inside of the air inlet hole, a plurality of first positioning holes (108) are formed in one side of the air inlet pipeline (107), a regeneration steam hole (109) is formed in one side of the boiler (1), and a sealing cover (110) is fixedly connected to one side of the air inlet pipeline (107), the middle part fixedly connected with of sealed lid (110) one side changes quick-witted (2), the first connecting pipe (3) of inside fixedly connected with of hot steam export (101), the middle part of first connecting pipe (3) is provided with first control valve (4), one side fixedly connected with thermolysis device (5) of hot steam export (101) are kept away from in first connecting pipe (3), the inside fixedly connected with second connecting pipe (6) of regeneration steam hole (109), the middle part of second connecting pipe (6) is provided with second control valve (7), one side fixedly connected in thermolysis device (5) of regeneration steam hole (109) are kept away from in second connecting pipe (6), a plurality of second locating hole (106) have been seted up to one side of sealed lid (110), and are a plurality of second locating hole (106) are circumference evenly distributed.
2. The steam coal pyrolyzing system for boilers of thermal power plants according to claim 1, wherein: the top of the thermal decomposition device (5) is provided with a hot steam inlet, the inside of the hot steam inlet is fixedly connected with a hot steam pipeline (502), the bottom of the thermal decomposition device (5) is provided with a cinder discharge hole (503), the inside of the cinder discharge hole (503) is fixedly connected with a cinder discharge pipeline (504), one side of the thermal decomposition device (5) is provided with a raw gas outlet hole (505), the inside of the raw gas outlet hole (505) is fixedly connected with a raw gas through pipe (506), the middle part of the raw gas through pipe (506) is provided with a third control valve (507), one side of the raw gas through pipe (506) far away from the raw gas outlet hole (505) is fixedly connected with a gas tar purification and separation device (8), the top of the hot steam pipeline (502) is fixedly connected with one side of the first connecting pipe (3) far away from the hot steam outlet (101), a regeneration steam inlet hole (501) is formed in one side of the thermal decomposition device (5), and the interior of the regeneration steam inlet hole (501) is fixedly connected to the second connecting pipe (6).
3. The steam coal pyrolyzing system for boilers of thermal power plants according to claim 2, wherein: the gas tar purification and separation device is characterized in that a fixing frame (801) is fixedly connected inside the gas tar purification and separation device (8), four clamping columns (802) are fixedly connected to the top of the fixing frame (801), the four clamping columns (802) are uniformly distributed in a circumferential manner, a filter screen (803) is clamped on the fixing frame (801) through the clamping columns (802), four clamping holes (804) are formed in the top of the filter screen (803), the four clamping holes (804) are uniformly distributed in a circumferential manner, separators (805) are fixedly connected to two sides of the inside of the gas tar purification and separation device (8) far away from the fixing frame (801), a support frame (9) is fixedly connected to the bottom of the gas tar purification and separation device (8), raw gas inlet holes (806) are formed in one side of the gas tar purification and separation device (8), and the inside of the raw gas inlet holes (806) is fixedly connected to the outer surface of a raw gas through pipe (506), the other side of the gas tar purification and separation device (8) is provided with a gas outlet, and a gas outlet pipe (807) is fixedly connected inside the gas outlet.
4. The steam coal pyrolyzing system of boiler in thermal power plant according to claim 3, wherein: a plurality of first fixing holes (809) are formed in the top of the gas tar purification and separation device (8), the first fixing holes (809) are circumferentially and uniformly distributed, a fixing cover (810) is fixedly connected to the top of the gas tar purification and separation device (8), a plurality of second fixing holes (811) are formed in the top of the fixing cover (810), the second fixing holes (811) are circumferentially and uniformly distributed, the shape and the size of the first fixing holes (809) are matched with those of the second fixing holes (811), and the gas tar purification and separation device (8) and the fixing cover (810) are fixedly connected through bolts.
5. The steam coal pyrolyzing system of boiler in thermal power plant according to claim 3, wherein: the supporting frame (9) comprises a supporting plate (901), the top of the supporting plate (901) is fixedly connected with a fixing piece (902), the bottom of the supporting plate (901) is fixedly connected with four supporting columns (903), and the four supporting columns (903) are symmetrically and uniformly distributed.
6. The steam coal pyrolyzing system for boilers of thermal power plants according to claim 1, wherein: the output end of the rotating machine (2) is fixedly connected with a rotating rod (201), one side of the outer surface of the rotating rod (201) is fixedly connected with a plurality of fan blades (202), and the fan blades (202) are uniformly distributed on the circumference.
7. The steam coal pyrolyzing system for boilers of thermal power plants according to claim 1, wherein: the position and the size of the first through hole (102) are matched with those of the second through hole (105), and the boiler (1) is fixedly connected with the boiler cover (104) through bolts.
8. The steam coal pyrolyzing system for boilers of thermal power plants according to claim 1, wherein: the position and the size of the first positioning hole (108) are matched with those of the second positioning hole (106), and the air pipeline (107) is fixedly connected with the sealing cover (110) through bolts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122339527.5U CN217077509U (en) | 2021-09-26 | 2021-09-26 | Boiler steam pyrolysis coal system of thermal power plant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122339527.5U CN217077509U (en) | 2021-09-26 | 2021-09-26 | Boiler steam pyrolysis coal system of thermal power plant |
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| CN217077509U true CN217077509U (en) | 2022-07-29 |
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