CN216688194U - Simulation test device for simultaneously blowing pulverized coal and hydrogen-rich gas into blast furnace - Google Patents

Simulation test device for simultaneously blowing pulverized coal and hydrogen-rich gas into blast furnace Download PDF

Info

Publication number
CN216688194U
CN216688194U CN202220205492.8U CN202220205492U CN216688194U CN 216688194 U CN216688194 U CN 216688194U CN 202220205492 U CN202220205492 U CN 202220205492U CN 216688194 U CN216688194 U CN 216688194U
Authority
CN
China
Prior art keywords
gas
hydrogen
pressure
output end
coal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202220205492.8U
Other languages
Chinese (zh)
Inventor
张建良
徐润生
党晗
张楠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Science and Technology Beijing USTB
Original Assignee
University of Science and Technology Beijing USTB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by University of Science and Technology Beijing USTB filed Critical University of Science and Technology Beijing USTB
Priority to CN202220205492.8U priority Critical patent/CN216688194U/en
Application granted granted Critical
Publication of CN216688194U publication Critical patent/CN216688194U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Abstract

The utility model discloses a simulation test device for simultaneously injecting coal powder and hydrogen-rich gas into a blast furnace, which comprises an oxygen preheating furnace, a combustion furnace and a belly pipe for communicating the oxygen preheating furnace and the combustion furnace; the oxygen preheating furnace is connected with the low-pressure air inlet assembly, the output end of the combustion furnace is connected with the air collecting assembly, and the belly pipe is respectively connected with the high-pressure air inlet assembly and the coal gas assembly; the gas component comprises a high-pressure gas inlet, a first high-pressure valve, a first high-pressure part and a first electromagnetic valve which are sequentially connected end to end, and the output end of the first electromagnetic valve is connected with the belly pipe. Through the mode, the device has a simple structure and a good simulation effect, can respectively carry out various researches on the coal powder and the hydrogen-rich coal gas so as to simulate and obtain the combustion rules of the coal powder and the hydrogen-rich coal gas, respectively obtain the change rules of the coal powder and the hydrogen-rich coal gas and the combustion rates of the coal powder and the hydrogen-rich coal gas in the process of mixed injection of the cooling agent and the combustion improver which are needed for adjusting the theoretical combustion temperature, and simultaneously can carry out the research on the influence of various additives on the combustion rates of the coal powder and the hydrogen-rich coal gas.

Description

Simulation test device for simultaneously blowing coal powder and hydrogen-rich gas into blast furnace
Technical Field
The utility model relates to the technical field of blast furnace ironmaking coal injection, in particular to a simulation test device for simultaneously injecting coal powder and hydrogen-rich gas into a blast furnace.
Background
Before blast furnace ironmaking operation, simulation experiment is generally required. At present, two-stage electric heating methods are mostly adopted at home and abroad to simulate the combustion state of coal powder at high temperature and high speed. The simulation device is difficult to simultaneously meet the requirements of high temperature and high speed of hot air.
Later, a blast furnace coal injection simulation experiment device is disclosed, which comprises a high-temperature pulverized coal combustion furnace, a low-pressure gas input assembly, a high-pressure gas input assembly and a gas collection assembly, wherein the low-pressure gas input assembly and the high-pressure gas input assembly are respectively connected with the high-temperature pulverized coal combustion furnace through a belly pipe. The technology can realize hot air and high speed experimental conditions, strengthens the heat exchange capacity of cold air and a heating element, and ensures that the coal powder combustion process can reflect the conditions in the direct blowing pipe and the reaction condition in the tuyere circulation zone. However, with the continuous maturity of the blast furnace coal injection technology, in order to reduce energy consumption, a technology of injecting hydrogen-rich gas into the blast furnace from a tuyere instead of pulverized coal is developed. The blast furnace coal injection simulation experiment device can not realize the simulation of the novel blast furnace coal injection technology.
Therefore, it is necessary to design a simulation test device which has a simple structure, can perform simulation experiments on both hydrogen-rich gas and coal powder, and has a good experiment simulation effect, and can simultaneously spray coal powder and hydrogen-rich gas into a blast furnace.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems, the utility model provides a simulation test device for simultaneously injecting coal powder and hydrogen-rich gas into a blast furnace, which can respectively carry out various researches on the coal powder and the hydrogen-rich gas so as to simulate the combustion rules of the coal powder and the hydrogen-rich gas, respectively obtain the change rules of the coal powder and the hydrogen-rich gas and the change rules of the coal powder and the hydrogen-rich gas on the respective combustion rates in the mixed injection process of a coolant and a combustion improver which are needed for regulating the theoretical combustion temperature, and simultaneously can carry out the research on the influence of various additives on the combustion rates of the coal powder and the hydrogen-rich gas.
In order to achieve the purpose, the utility model adopts the technical scheme that:
a simulation test device for simultaneously blowing pulverized coal and hydrogen-rich gas into a blast furnace comprises an equipment main body, wherein the equipment main body comprises an oxygen preheating furnace, a combustion furnace and a belly pipe for communicating the oxygen preheating furnace with the combustion furnace; the oxygen preheating furnace is connected with the low-pressure air inlet assembly, the output end of the combustion furnace is connected with the air collecting assembly, and the belly pipe is respectively connected with the high-pressure air inlet assembly and the coal gas assembly;
the coal gas assembly comprises a high-pressure coal gas inlet, a first high-pressure valve, a first high-pressure part and a first electromagnetic valve which are sequentially connected end to end, and the output end of the first electromagnetic valve is connected with the belly pipe.
Furthermore, the output end of the high-pressure gas inlet is connected with the input end of the first high-pressure valve through a pipeline, the output end of the first high-pressure valve is connected with the input end of the first high-pressure part through a pipeline, and the output end of the first high-pressure part is connected with the first electromagnetic valve through a pipeline.
Furthermore, the high-pressure air inlet assembly comprises a high-pressure air inlet, a second high-pressure valve connected with an output end pipeline of the high-pressure air inlet, a second high-pressure part connected with an output end pipeline of the second high-pressure valve, and a second electromagnetic valve connected with an output end pipeline of the second high-pressure part.
Furthermore, the output end of the second electromagnetic valve is connected with the belly pipe, and a feed inlet is arranged on a connecting pipeline of the second electromagnetic valve and the belly pipe.
Further, the low-pressure air inlet assembly comprises a low-pressure air inlet and a low-pressure valve connected with an output end pipeline of the low-pressure air inlet.
Furthermore, the output end of the low pressure valve is connected with the input end pipeline of the oxygen preheating furnace, and a safety valve is arranged on the connecting pipeline of the low pressure valve and the oxygen preheating furnace.
Furthermore, the gas collection assembly comprises a gas slag filtering device connected with an output end pipeline of the combustion furnace, a third electromagnetic valve connected with the gas slag filtering device, a gas collection bottle connected with an output end pipeline of the third electromagnetic valve, and a vacuum pump connected with the gas collection bottle pipeline.
Furthermore, the connecting pipelines between the combustion furnace and the gas slag filtering device and between the gas slag filtering device and the third electromagnetic valve are stainless steel pipes.
Furthermore, the third electromagnetic valve and the gas collecting bottle, and the connecting pipelines between the gas collecting bottle and the vacuum pump are air pipes.
Furthermore, the simulation test device for simultaneously injecting the coal powder and the hydrogen-rich gas into the blast furnace also comprises a control device in signal connection with the equipment main body.
Compared with the prior art, the utility model has the beneficial effects that:
1. the simulation test device for simultaneously injecting the coal powder and the hydrogen-rich gas into the blast furnace can respectively carry out various researches on the coal powder and the hydrogen-rich gas by additionally arranging the high-pressure input pipeline of the hydrogen-rich gas on the pipeline of the belly pipe of the traditional blast furnace coal injection simulation test device and arranging various control elements such as a high-pressure valve, an electromagnetic valve and the like on the high-pressure input pipeline so as to simulate and obtain the combustion rules of the coal powder and the hydrogen-rich gas and respectively obtain the change rules of the coal powder and the hydrogen-rich gas and the change rules of the combustion rates of the coal powder and the hydrogen-rich gas in the mixed injection process of using a cooling agent and a combustion improver for regulating the theoretical combustion temperature, and can also carry out the research on the influence of various additives on the combustion rates of the coal powder and the hydrogen-rich gas.
2. The simulation test device for simultaneously injecting the coal powder and the hydrogen-rich coal gas into the blast furnace has the advantages of simple integral structure, compact arrangement and convenient operation, and has no layering phenomenon when other additives exist in the coal powder or the hydrogen-rich coal gas. In addition, through setting up controlling means, controlling means is connected with each valve body component in the test device to the automatic switch that realizes each valve body component, the automation level is high.
Drawings
FIG. 1 is a schematic structural diagram of a simulation test device for simultaneously injecting pulverized coal and hydrogen-rich gas into a blast furnace according to the present invention;
the parts in the drawings are numbered as follows: 10. a combustion furnace; 20. a belly pipe; 31. a high pressure gas inlet; 32. a first high pressure valve; 33. a first solenoid valve; 34. a first high-voltage portion; 41. a high pressure air inlet; 42. a second high pressure valve; 43. a second solenoid valve; 44. a feed inlet; 45. a second high-voltage portion; 51. a low pressure air inlet; 52. a low pressure valve; 53. a safety valve; 54. an oxygen preheating furnace; 61. a gas-slag filtering device; 62. a third electromagnetic valve; 63. a gas collection bottle; 64. a vacuum pump.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and processing steps closely related to the scheme of the present invention are shown in the drawings, and other details not closely related to the present invention are omitted.
In addition, it is also to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Examples
As shown in fig. 1, a simulation test device 100 for simultaneously injecting pulverized coal and hydrogen-rich gas into a blast furnace includes an apparatus main body and a control device in signal connection with the apparatus main body. The control device is in signal connection with a plurality of constituent elements in the apparatus main body to control the switching of the respective constituent elements. The apparatus main body includes an oxygen preheating furnace 54, a combustion furnace 10, and a belly pipe 20 for communicating the oxygen preheating furnace 54 with the combustion furnace 10. Wherein the oxygen preheater 54 is connected to the low pressure inlet assembly to feed oxygen into the oxygen preheater 54 and to heat the oxygen to hot blast temperatures. The belly pipe 20 is respectively connected with a high-pressure air inlet component and a coal gas component, the high-pressure air inlet component is used for rapidly conveying pulverized coal, and the coal gas component is used for rapidly conveying hydrogen-rich coal gas. The belly pipe 20 can simulate the air inlet area, and when pulverized coal or hydrogen-rich coal gas is blown into the belly pipe 20 rapidly, the pulverized coal or the hydrogen-rich coal gas is mixed with hot air in the belly pipe 20 and then is combusted, and enters a high-temperature area while being combusted. The output end of the combustion furnace 10 is connected with the gas collection assembly, and the waste gas generated after the pulverized coal or the hydrogen-rich gas is combusted in the combustion furnace 10 is collected by the gas collection assembly so as to be convenient for analyzing the waste gas subsequently.
According to the arrangement, the high-pressure input pipeline of the hydrogen-rich gas is additionally arranged on the pipeline of the belly pipe 20 of the traditional blast furnace coal injection simulation experiment device, and the high-pressure input pipeline is provided with various control elements such as the high-pressure valve and the electromagnetic valve, so that various researches can be respectively carried out on the pulverized coal and the hydrogen-rich gas, the combustion rules of the two can be obtained through simulation, the combustion rules of the two and the change rules of the combustion rates of the two in the mixed injection process needing to use the cooling agent and the combustion improver for adjusting the theoretical combustion temperature can be respectively obtained, and meanwhile, the influence research of various additives on the combustion rates of the two can be carried out. The whole test device has simple structure, compact arrangement and convenient operation, and has no layering phenomenon when other additives exist in the coal powder or the hydrogen-rich coal gas.
As shown in fig. 1, in some embodiments, the output of the high pressure gas inlet 31 is connected to the input of a first high pressure valve 32. The high-pressure gas inlet 31 is used for inputting hydrogen-rich gas. The output end of the first high pressure valve 32 is connected with the input end of the first high pressure part 34 through a pipeline, and the output end of the first high pressure part 34 is connected with the first electromagnetic valve 33 through a pipeline. In particular, the oxygen pressure in the first high-pressure part 34 can reach 0.3 to 0.5MPa after being pressurized. The output end of the first electromagnetic valve 33 is connected with the belly pipe 20, and the first electromagnetic valve 33 is used for controlling the on-off of the hydrogen-rich gas.
As shown in fig. 1, in some embodiments, the high pressure air intake assembly includes a high pressure air inlet 41, a second high pressure valve 42 connected to an output end of the high pressure air inlet 41, a second high pressure portion 45 connected to an output end of the second high pressure valve 42, and a second solenoid valve 43 connected to an output end of the second high pressure portion 45. The high-pressure inlet 41 is used for inputting high-pressure airflow. The second high-pressure part 45 is equivalent to a coal gun, the pressure of oxygen in the coal gun can reach 0.3-0.5 MPa after pressurization, and the coal gun can be used as a coal powder carrier gas in the test process. The output end of the second electromagnetic valve 43 is connected with the pipeline of the belly pipe 20, and a charging opening 44 is arranged on the connecting pipeline of the second electromagnetic valve and the belly pipe, so that coal dust and the like can be added through the charging opening 44. The second electromagnetic valve 43 is used for controlling the on-off of the high-pressure gas carrying the pulverized coal.
As shown in fig. 1, in some embodiments, the low pressure intake assembly includes a low pressure intake port 51, and a low pressure valve 52 plumbed to an output of the low pressure intake port 51. Wherein, the low pressure air inlet 51 is used for inputting low pressure gas, and the pressure of the input oxygen can reach 0.05-0.3 MPa. The output end of the low pressure valve 52 is connected with the input end pipeline of the oxygen preheating furnace 54, and a safety valve 53 is arranged on the connecting pipeline of the low pressure valve and the oxygen preheating furnace.
As shown in fig. 1, in some embodiments, the gas collection assembly includes a gas slag filter 61 connected to the output of the combustion furnace 10, a third solenoid valve 62 connected to the gas slag filter 61, a gas collection bottle 63 connected to the output of the third solenoid valve 62, and a vacuum pump 64 connected to the gas collection bottle 63. The gas-slag filtering device 61 can filter waste slag carried in gas generated by combustion, and influence on subsequent gas analysis experiments is prevented. The third electromagnetic valve 62 is used for controlling the on-off of the gas generated after the combustion of the pulverized coal or the hydrogen-rich gas in the combustion furnace 10 to the gas collecting bottle 63. The vacuum pump 64 can vacuumize the gas collection bottle 63 so that the gas generated by combustion can be input into the gas collection bottle 63.
Particularly, the connecting pipelines between the combustion furnace 10 and the gas slag filtering device 61 and between the gas slag filtering device 61 and the third electromagnetic valve 62 are all stainless steel pipes, so that the connecting pipelines are prevented from being corroded. The connecting pipelines between the third electromagnetic valve 62 and the gas collecting bottle 63, and between the gas collecting bottle 63 and the vacuum pump 64 are air pipes.
As shown in fig. 1, in some embodiments, the simulation test device for injecting coal powder and hydrogen-rich gas into a blast furnace simultaneously further includes a gas analysis device and a computer data monitoring and processing device to detect the gas collected in the gas collecting bottle 63.
The following describes a specific operation of the present application:
before the test, the whole simulation test device is sealedAnd (4) performing sexual inspection, namely pressurizing the whole simulation test device by using nitrogen to ensure that the pressure of the simulation test device reaches 0.2MPa, and keeping the high-pressure state for about ten minutes. When there is no problem in the sealing test, the oxygen preheating furnace 54 is heated to about 1100 ℃, and the combustion furnace 10 is simultaneously heated to about 1500 ℃. The entire simulation test apparatus is then filled with oxygen until the entire apparatus is completely filled, and the gas cylinder 63 is evacuated to a vacuum by means of the vacuum pump 64. If the test shows that the gas is rich in hydrogen, the first high-pressure part 34 is pressurized to 0.4MPa, the first electromagnetic valve 33 and the third electromagnetic valve 62 are controlled to be opened by the control device, and the waste gas generated by combustion of the rich in hydrogen in the combustion furnace 10 is filtered and enters the gas collecting bottle 63. Finally, the gas in the gas collecting bottle 63 is chemically analyzed, and CO in the waste gas are measured2，H2，O2And the components of the hydrogen-rich gas are analyzed according to various gas components in the waste gas and the elements of the coal, so that the combustion rate of the hydrogen-rich gas can be calculated. It should be noted that the principle and analysis of the test of the coal dust are the same as those of the above-mentioned simulation test of the hydrogen-rich gas, and are not described again.
The above description is only for the purpose of illustrating the technical solutions of the present invention and is not intended to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; all the equivalent structures or equivalent processes performed by using the contents of the specification and the drawings of the utility model, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A simulation test device for simultaneously injecting coal dust and hydrogen-rich gas into a blast furnace is characterized by comprising an equipment main body, wherein the equipment main body comprises an oxygen preheating furnace (54), a combustion furnace (10) and a belly pipe (20) for communicating the oxygen preheating furnace (54) with the combustion furnace (10); the oxygen preheating furnace (54) is connected with the low-pressure air inlet assembly, the output end of the combustion furnace (10) is connected with the air collecting assembly, and the belly pipe (20) is respectively connected with the high-pressure air inlet assembly and the coal gas assembly;
the coal gas component comprises a high-pressure coal gas inlet (31), a first high-pressure valve (32), a first high-pressure part (34) and a first electromagnetic valve (33) which are sequentially connected end to end, and the output end of the first electromagnetic valve (33) is connected with the belly pipe (20).
2. The simulation test device for simultaneously injecting pulverized coal and hydrogen-rich gas into a blast furnace according to claim 1, wherein an output end of the high-pressure gas inlet (31) is connected with an input end pipeline of the first high-pressure valve (32), an output end of the first high-pressure valve (32) is connected with an input end pipeline of the first high-pressure portion (34), and an output end of the first high-pressure portion (34) is connected with the first electromagnetic valve (33) through a pipeline.
3. The simulation test device for simultaneously injecting pulverized coal and hydrogen-rich gas into a blast furnace according to claim 1, wherein the high-pressure air inlet assembly comprises a high-pressure air inlet (41), a second high-pressure valve (42) connected with an output end pipeline of the high-pressure air inlet (41), a second high-pressure part (45) connected with an output end pipeline of the second high-pressure valve (42), and a second electromagnetic valve (43) connected with an output end pipeline of the second high-pressure part (45).
4. The simulation test device for simultaneously injecting the pulverized coal and the hydrogen-rich gas into the blast furnace according to claim 3, wherein an output end of the second electromagnetic valve (43) is connected with a pipeline of the belly pipe (20), and a charging opening (44) is arranged on a connecting pipeline of the two.
5. The simulation test device for simultaneously injecting pulverized coal and hydrogen-rich gas into a blast furnace according to claim 1, wherein the low-pressure air inlet assembly comprises a low-pressure air inlet (51) and a low-pressure valve (52) connected with an output end pipeline of the low-pressure air inlet (51).
6. The simulation test device for simultaneously injecting pulverized coal and hydrogen-rich gas into a blast furnace according to claim 5, wherein the output end of the low pressure valve (52) is connected with the input end pipeline of the oxygen preheating furnace (54), and a safety valve (53) is arranged on the connecting pipeline of the low pressure valve and the oxygen preheating furnace.
7. The simulation test device for simultaneously injecting pulverized coal and hydrogen-rich gas into a blast furnace according to claim 1, wherein the gas collection assembly comprises a gas slag filtering device (61) connected with an output end pipeline of the combustion furnace (10), a third electromagnetic valve (62) connected with the gas slag filtering device (61) through a pipeline, a gas collection bottle (63) connected with an output end pipeline of the third electromagnetic valve (62), and a vacuum pump (64) connected with the gas collection bottle (63) through a pipeline.
8. The simulation test device for simultaneously injecting pulverized coal and hydrogen-rich gas into a blast furnace according to claim 7, wherein the connection pipelines between the combustion furnace (10) and the gas-slag filtering device (61) and between the gas-slag filtering device (61) and the third electromagnetic valve (62) are stainless steel pipes.
9. The simulation test device for simultaneously injecting pulverized coal and hydrogen-rich gas into a blast furnace according to claim 7, wherein the connecting pipelines between the third electromagnetic valve (62) and the gas collecting bottle (63) and between the gas collecting bottle (63) and the vacuum pump (64) are air pipes.
10. The simulation test device for simultaneously injecting the pulverized coal and the hydrogen-rich gas into the blast furnace according to claim 1, wherein the simulation test device for simultaneously injecting the pulverized coal and the hydrogen-rich gas into the blast furnace further comprises a control device in signal connection with the equipment main body.
CN202220205492.8U 2022-01-25 2022-01-25 Simulation test device for simultaneously blowing pulverized coal and hydrogen-rich gas into blast furnace Active CN216688194U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202220205492.8U CN216688194U (en) 2022-01-25 2022-01-25 Simulation test device for simultaneously blowing pulverized coal and hydrogen-rich gas into blast furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220205492.8U CN216688194U (en) 2022-01-25 2022-01-25 Simulation test device for simultaneously blowing pulverized coal and hydrogen-rich gas into blast furnace

Publications (1)

Publication Number Publication Date
CN216688194U true CN216688194U (en) 2022-06-07

Family

ID=81827179

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202220205492.8U Active CN216688194U (en) 2022-01-25 2022-01-25 Simulation test device for simultaneously blowing pulverized coal and hydrogen-rich gas into blast furnace

Country Status (1)

Country Link
CN (1) CN216688194U (en)

Similar Documents

Publication Publication Date Title
CN103122398B (en) Smoke self-circulation preheating coal dust injection technology and device
CN212375295U (en) Device for producing blast furnace injection gas by using blast furnace gas
CN112391508A (en) Double-cabinet parallel switching system for converter gas recovery
CN216688194U (en) Simulation test device for simultaneously blowing pulverized coal and hydrogen-rich gas into blast furnace
CN114216347B (en) Horizontal fast-frequency heat accumulating type high-pressure coal gas heating process
CN110317911B (en) Method for quickly introducing coal gas after blast furnace overhaul and mid-term delivery
CN217230609U (en) Coke oven coal charging process gas export system matched with raw coke oven gas reforming
CN106435081A (en) Preparation system of direct reduction iron and preparation method
CN115992298A (en) Improved efficient vertical pulverized coal heating device and method
CN216662494U (en) Pure hydrogen production synthetic ammonia system
CN215799659U (en) Blast furnace gas injection system for Europe and metallurgy
CN208155127U (en) A kind of bored steam heat exchanger of heat
CN212378479U (en) Protective gas cooling and recycling system of atmosphere protection sintering furnace
CN112375902A (en) Experimental system for simulating pelletizing belt type roasting machine and using method thereof
CN201258335Y (en) Blast furnace coal injection simulated experiment apparatus
CN201292372Y (en) Blast furnace full-wind opening convolution section sampler
CN114657317B (en) Low-carbon metallurgy method
CN214612610U (en) Double-cabinet parallel switching system for converter gas recovery
CN211739607U (en) Cooling device of thermogravimetric analyzer
CN110057521A (en) Motor vehicle emission processor heat vibration pilot system
CN214842698U (en) Waste heat recovery system for sand washing water of steel mill
CN111715620B (en) Rapid cleaning system and rapid cleaning method for inner cavity of liquid oxygen kerosene engine
CN219793069U (en) Device for static material layer roasting cold state starting and on-line simulating pellet roasting end point
CN219104675U (en) Water-doped supercritical carbon dioxide corrosion test device
CN218786642U (en) High-pressure coal gas recovery device for cloth bag dust removal box body

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant