CN213357630U - Comprehensive purification and recovery system for pressure-equalizing and bleeding coal gas of blast furnace charging bucket - Google Patents
Comprehensive purification and recovery system for pressure-equalizing and bleeding coal gas of blast furnace charging bucket Download PDFInfo
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- CN213357630U CN213357630U CN202022302552.1U CN202022302552U CN213357630U CN 213357630 U CN213357630 U CN 213357630U CN 202022302552 U CN202022302552 U CN 202022302552U CN 213357630 U CN213357630 U CN 213357630U
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a blast furnace charge jar voltage-sharing is diffused coal gas and is synthesized purification recovery system, through setting up material jar and the coal gas dehydration system that connects gradually, the external coal gas recovery pipeline of dewatering system to set up coal gas at coal gas recovery pipeline and draw system and dust pelletizing system, coal gas dehydration system and dust pelletizing system can separate the purification to the impurity in retrieving coal gas, and coal gas draws the system and has realized that blast furnace charge jar voltage-sharing is diffused coal gas and is synthesized purification recovery system's not diffused recovery. The utility model discloses, promoted effectively and retrieved the coal gas volume, and the connecting device is few, simple process, steam heater can further reduce coal gas humidity, avoids causing the problem of pipe blockage because of the coal gas is moist for the coal gas of dust pelletizing system of flowing through is drier, also is the dust in the coal gas for dry dust, has promoted the blast furnace charge jar voltage-sharing and has diffused coal gas and synthesize purification recovery system security and stability, promotes user experience.
Description
Technical Field
The utility model relates to a blast furnace charging bucket coal gas synthesizes and purifies recovery technical field, concretely relates to blast furnace charging bucket voltage-sharing diffuses coal gas and synthesizes and purifies recovery system.
Background
In recent years, with the global trend of low-carbon economy and the increasingly severe climate problem, people are gradually attracted high attention. In the metallurgical industry, the energy consumption and the pollution generated by blast furnace ironmaking occupy a large proportion in the whole steel working procedure, and are important propulsion objects of energy-saving and emission-reducing measures.
In the process of blast furnace smelting production, the pressure-equalizing coal gas in the furnace top charging tank is directly discharged into the atmosphere after passing through the cyclone dust collector and the silencer, and the part of coal gas is toxic and combustible mixed gas containing a large amount of CO and dust, so that the atmospheric environment, particularly the production area of the blast furnace, is polluted, and meanwhile, energy is wasted.
Therefore, the existing furnace top charging bucket is provided with a furnace top pressure-sharing gas recovery system, the raw gas diffused from the blast furnace charging bucket in a pressure-sharing manner enters a cyclone dust collector through a pressure-sharing diffusion pipeline to be primarily dedusted, then enters a bag-type dust collector connected in series with the cyclone dust collector to form clean gas, an ejector is connected in series behind the bag-type dust collector, the clean gas is quickly ejected and enters a gas pipe network under the action of the ejector, and the quick diffusion and recovery of the gas diffused from the blast furnace charging bucket in a pressure-sharing manner are realized.
However, the existing pressure equalizing gas recovery system still has the following defects:
(1) the process is complex, so that the whole set of equipment is more in quantity, and the installation process is complicated;
(2) when the tail end of the whole process is used for dedusting, wet dust is easily adsorbed on a pipeline, so that the pipeline is blocked, and the safety problem is caused.
In view of this, there is an urgent need to improve the existing comprehensive purification and recovery system for blast furnace charging bucket coal gas to simplify the process and improve the safety effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems that the prior blast furnace charging bucket coal gas comprehensive purification and recovery system has complex process, a large number of devices and poor safety.
In order to solve the technical problem, the utility model provides a blast furnace charge jar voltage-sharing diffuses coal gas and synthesizes purification recovery system, including the material jar and the coal gas dewatering system that connect gradually, coal gas dewatering system sets up voltage-sharing recovery system's the end of giving vent to anger, the external gas recovery pipeline of coal gas dewatering system, gas recovery pipeline includes gas recovery main line and branch road, gas recovery pipeline includes:
the coal gas injection system is arranged as an injector, the injector is provided with an air suction port, an injection coal gas inlet and an air outlet, the air suction port is connected with the air outlet end of the charging bucket, the injection coal gas inlet is connected with the branch, and the air outlet is connected with the air outlet end of the coal gas injection system;
the steam heater is arranged at the air outlet end of the coal gas dehydration system and is provided with a steam inlet, an air inlet and an air outlet, the steam inlet is used for sucking steam, the air inlet is connected with the air outlet end of the coal gas dehydration system, and the air outlet is used for connecting the air outlet end of the steam heater;
and the dust removal system is arranged at the air outlet end of the steam heater, and the air outlet end of the dust removal system is connected with the low-pressure gas pipe network.
In the above technical scheme, the steam inlet of the steam heater is connected to a steam box body, and the steam box body is preheated through the charging bucket.
In the technical scheme, the air suction port and the air outlet are both provided with an electric butterfly valve and an electric blind plate valve, the electric butterfly valve arranged at the air suction port is a first electric butterfly valve, the electric butterfly valve arranged at the air outlet is a second electric butterfly valve, and the injection gas inlet is provided with a pneumatic butterfly valve, an electric blind plate valve, a hydraulic cut-off valve and a blast furnace high-pressure clean gas pipe network for providing gas for the injector.
In the technical scheme, the dust removal system is a bag-type dust remover.
In the technical scheme, the air inlet end and the air outlet end of the bag-type dust collector are both provided with an electric blind plate valve and a pneumatic butterfly valve.
In the technical scheme, the coal gas dehydration system is a high-efficiency gravity dust removal dehydrator.
In the technical scheme, the direction of the air inlet end of the high-efficiency gravity dust-removing dehydrator is externally connected with a nitrogen purging device.
In the technical scheme, the water outlet end of the high-efficiency gravity dust-removing dehydrator is connected with the slag flushing channel, and a manual ball valve is connected between the high-efficiency gravity dust-removing dehydrator and the slag flushing channel.
In the technical scheme, the upper end of the dust removal system is connected with the safety valve, and the lower end of the dust removal system is connected with the ash conveying system.
Compared with the prior art, the utility model discloses a comprehensive purification and recovery system of pressure-equalizing diffused gas of blast furnace charging bucket, through setting up material jar and the gas dewatering system that connects gradually, the water removal system is external with the gas recovery pipeline, and set up gas injection system and dust pelletizing system at the gas recovery pipeline, gas dewatering system and dust pelletizing system can separate the purification to the impurity in the recovered gas, and the gas injection system has realized the non-diffused recovery of pressure-equalizing diffused gas comprehensive purification and recovery system of blast furnace charging bucket, thereby has effectively promoted the recovered gas volume, and the connecting device is few, simple process, steam heater can further reduce the gas humidity, avoid the problem of pipeline blockage because of the gas is moist, make the gas that flows through the dust pelletizing system drier, also be the dust in the gas as dry dust, the safety and the stability of pressure-equalizing diffused gas comprehensive purification and recovery system of blast furnace charging bucket are promoted, and the user experience is improved.
Drawings
FIG. 1 is a schematic structural view of the pressure-equalizing and bleeding coal gas comprehensive purification and recovery system of the blast furnace charging bucket of the present invention.
Detailed Description
The utility model provides a blast furnace charge jar voltage-sharing diffuses coal gas and synthesizes purification recovery system can realize simplifying technology, promotes the purpose of security. The invention is described in detail below with reference to the drawings and the detailed description.
As shown in fig. 1, the utility model provides a pair of coal gas comprehensive purification recovery system is diffused in blast furnace charge tank voltage-sharing, including the material jar 10 and the coal gas dewatering system 20 that connect gradually, coal gas dewatering system 20 sets up the end of giving vent to anger at voltage-sharing recovery system, and the external coal gas recovery pipeline of coal gas dewatering system 20, and coal gas recovery pipeline includes coal gas recovery main line and branch road 34, and coal gas recovery pipeline includes:
the coal gas injection system is arranged as an injector 30, the injector 30 is provided with an air suction port 31, an injection coal gas inlet 32 and an air outlet 33, the air suction port 31 is connected with the air outlet end of the charging bucket 10, the injection coal gas inlet 32 is connected with a branch 34, and the air outlet 33 is connected with the air outlet end of the coal gas injection system;
the steam heater 40 is arranged at the air outlet end of the coal gas dehydration system 20, the steam heater 40 is provided with a steam inlet 41, an air inlet 42 and an air outlet 43, the steam inlet 41 is used for sucking steam, the air inlet 42 is connected with the air outlet end of the coal gas dehydration system 20, and the air outlet 43 is used for connecting the air outlet end of the steam heater 40;
and the dust removal system 50 is arranged at the air outlet end of the steam heater 40, and the air outlet end of the dust removal system 50 is connected with a low-pressure gas pipe network 60.
In the embodiment, the charging bucket 10 and the gas dehydration system 20 are sequentially connected, the water removal system is externally connected with a gas recovery pipeline, the coal gas recovery pipeline is provided with a coal gas injection system and a dust removal system 50, the coal gas dehydration system 20 and the dust removal system 50 can separate and purify impurities in the recovered coal gas, the coal gas injection system realizes the non-diffusion recovery of the pressure-equalizing diffused coal gas comprehensive purification recovery system of the blast furnace charging bucket 10, effectively improves the recovered coal gas amount, and the connecting equipment is less, the process is simple, the steam heater 40 can further reduce the humidity of the coal gas, the problem of pipeline blockage caused by the damp coal gas is avoided, the coal gas flowing through the dust removal system 50 is drier, namely, dust in the coal gas is dry dust, so that the safety and stability of the comprehensive purification and recovery system for the pressure-equalizing diffusion coal gas of the blast furnace charging bucket 10 are improved, and the user experience is improved.
Specifically, after the material is discharged from the material tank 10, the material flow regulating valve 11 and the lower sealing valve 12 are closed, gas flows out through a gas recovery pipeline, a dehydrator is needed to perform dehumidification operation on the gas due to high humidity of the diffused gas, a gas dehydration system 20 is arranged at the gas outlet end of the pressure equalizing recovery system and is provided as a high-efficiency gravity dust removal dehydrator, and the gas is dehydrated in the high-efficiency gravity dust removal dehydrator, so that the problem of pipeline blockage caused by gas humidity is solved; after the coal gas injection system works, the pressure of the material tank 10 is reduced to zero, the pressure equalizing recovery system is closed, the recovery process is completed, non-diffusion recovery is realized, and the quantity of recovered coal gas reaches over 95 percent; before entering the dust removal system 50, the coal gas is subjected to secondary dehumidification treatment by the steam heater 40, so that the problem of pipeline blockage caused by damp coal gas can be effectively solved.
In an embodiment of the present invention, preferably, the steam inlet 41 of the steam heater 40 is connected to a steam box, which is preheated by the bucket 10.
In this embodiment, the steam inlet 41 of the steam heater 40 is connected to the steam box, the gas in the steam box is preheated by the charging bucket 10, and the gas has a high problem before entering the steam heater 40, so that the energy consumption of the steam heater 40 can be greatly reduced, and the production cost can be reduced.
In an embodiment of the present invention, preferably, the air inlet 31 and the air outlet 33 are both provided with an electric butterfly valve and an electric blind plate valve 36, the electric butterfly valve arranged at the air inlet 31 is a first electric butterfly valve 23, the electric butterfly valve arranged at the air outlet 33 is a second electric butterfly valve 39, and the injection gas inlet 32 is provided with a pneumatic butterfly valve 37, an electric blind plate valve 36, a hydraulic cut-off valve 35 and a blast furnace high-pressure clean gas pipe network for providing gas for the injector 30.
In an embodiment of the present invention, preferably, the dust removing system 50 is a bag-type dust remover.
In an embodiment of the present invention, preferably, the air inlet end and the air outlet end of the bag-type dust collector are both provided with an electric blind plate valve 53 and a pneumatic butterfly valve.
In this embodiment, through all being equipped with electronic blind plate valve 53 and pneumatic butterfly valve at the inlet end of sack cleaner and the end of giving vent to anger, be favorable to adjusting the inlet end of sack cleaner and the pressure of the end of giving vent to anger, guaranteed the air current direction, avoided the safety problem that the opposite direction of air current causes, promoted the pressure-equalizing of blast furnace charge jar 10 and diffused coal gas and synthesized purification recovery system stability and reliability.
In one embodiment of the present invention, the gas dewatering system 20 is preferably configured as a high efficiency gravity dust extraction dehydrator.
In one embodiment of the present invention, preferably, the inlet end of the high-efficiency gravity dust-removing dehydrator is further externally connected with a nitrogen purging device 21.
In the embodiment, the nitrogen purging device 21 is externally connected to the air inlet end of the high-efficiency gravity dust removal dehydrator, so that dust and impurities in the high-efficiency gravity dust removal dehydrator can be purged, and nitrogen is original gas in the air, so that the environment is not affected, and the high-efficiency gravity dust removal dehydrator is economical and practical.
In one embodiment of the present invention, preferably, the water outlet end of the high-efficiency gravity dust-removing dehydrator is connected with the slag flushing ditch, and the manual ball valve 22 is connected between the high-efficiency gravity dust-removing dehydrator and the slag flushing ditch.
In the embodiment, a manual ball valve 22 is connected between the high-efficiency gravity dust-removing dehydrator and the slag sluiceway, and the manual ball valve 22 discharges water and residues in the high-efficiency gravity dust-removing dehydrator to the slag sluiceway.
In one embodiment of the present invention, the upper end of the dust removing system 50 is preferably connected to a safety valve 51, and the lower end is preferably connected to an ash conveying system 52.
In this embodiment, the upper end of the bag-type dust collector is connected with a safety valve 51, and the lower end is connected with an ash conveying system 52. The safety valve 51 is in a long-closed state, and when the pressure in the bag-type dust collector is higher than the set pressure of the safety valve 513053, the safety valve 51 is opened to protect the whole pressure equalizing recovery system; the ash transport system 523054 receives dust from the bag house.
The utility model discloses a comprehensive purification and recovery system of blast furnace charge tank pressure-equalizing diffusion coal gas, through setting up material jar and coal gas dewatering system that connect gradually, dewatering system external gas recovery pipeline, and set up coal gas injection system and dust pelletizing system at coal gas recovery pipeline, coal gas dewatering system and dust pelletizing system can separate the purification to the impurity in the recovery coal gas, and coal gas injection system has realized the comprehensive purification and recovery system of blast furnace charge tank pressure-equalizing diffusion coal gas and has not diffused and retrieve, thereby has promoted the recovery coal gas volume effectively, and the connecting device is few, simple process, steam heater can further reduce the coal gas humidity, avoid the problem of pipeline blockage caused by the coal gas humidity, make the coal gas that flows through the dust pelletizing system drier, also be the dust in the coal gas dry dust, promoted blast furnace charge tank pressure-equalizing diffusion coal gas comprehensive purification and recovery system security and stability, and the user experience is improved.
In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The present invention is not limited to the above-mentioned best mode, and any person should learn the structural change made under the teaching of the present invention, all with the present invention has the same or similar technical solution, all fall into the protection scope of the present invention.
Claims (9)
1. The utility model provides a blast furnace charge tank voltage-sharing diffuses coal gas and synthesizes purification recovery system, is including the material jar and the coal gas dewatering system that connect gradually, the material jar is equipped with voltage-sharing recovery system, a serial communication port, coal gas dewatering system sets up voltage-sharing recovery system's the end of giving vent to anger, the external coal gas recovery pipeline of coal gas dewatering system, coal gas recovery pipeline includes coal gas recovery main line and branch road, coal gas recovery pipeline includes:
the coal gas injection system is arranged as an injector, the injector is provided with an air suction port, an injection coal gas inlet and an air outlet, the air suction port is connected with the air outlet end of the charging bucket, the injection coal gas inlet is connected with the branch, and the air outlet is connected with the air outlet end of the coal gas injection system;
the steam heater is arranged at the air outlet end of the coal gas dehydration system and is provided with a steam inlet, an air inlet and an air outlet, the steam inlet is used for sucking steam, the air inlet is connected with the air outlet end of the coal gas dehydration system, and the air outlet is used for connecting the air outlet end of the steam heater;
and the dust removal system is arranged at the air outlet end of the steam heater, and the air outlet end of the dust removal system is connected with the low-pressure gas pipe network.
2. The blast furnace charge tank pressure equalizing and bleeding gas comprehensive purification and recovery system according to claim 1, wherein the steam inlet of the steam heater is connected to a steam box body, and the steam box body is preheated through the charging tank.
3. The blast furnace tank pressure-equalizing and bleeding gas comprehensive purification and recovery system according to claim 1, wherein the air suction port and the air outlet are both provided with an electric butterfly valve and an electric blind plate valve, the electric butterfly valve arranged at the air suction port is a first electric butterfly valve, the electric butterfly valve arranged at the air outlet is a second electric butterfly valve, and the injection gas inlet is provided with a pneumatic butterfly valve, an electric blind plate valve, a hydraulic cut-off valve and a blast furnace high-pressure clean gas pipe network for providing gas for the injector.
4. The blast furnace charge tank pressure equalizing and bleeding gas comprehensive purification and recovery system according to claim 1, wherein the dust removal system is a bag-type dust remover.
5. The blast furnace charge tank pressure equalizing and bleeding gas comprehensive purification and recovery system according to claim 4, wherein the inlet end and the outlet end of the bag-type dust remover are provided with an electric blind valve and a pneumatic butterfly valve.
6. The blast furnace charge tank pressure equalizing and bleeding gas comprehensive purification and recovery system according to claim 1, wherein the gas dehydration system is a high-efficiency gravity dust removal dehydrator.
7. The blast furnace charge tank pressure-equalizing and bleeding gas comprehensive purification and recovery system according to claim 6, wherein the high-efficiency gravity dust-removal dehydrator is externally connected with a nitrogen purging device in the direction of the gas inlet end.
8. The blast furnace charge tank pressure equalizing and bleeding gas comprehensive purification and recovery system according to claim 6, wherein the water outlet end of the high-efficiency gravity dust-removal dehydrator is connected with a slag flushing channel, and a manual ball valve is connected between the high-efficiency gravity dust-removal dehydrator and the slag flushing channel.
9. The blast furnace charge tank pressure equalizing and bleeding gas comprehensive purification and recovery system as claimed in claim 1, wherein the upper end of the dust removal system is connected with a safety valve, and the lower end is connected with an ash conveying system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022302552.1U CN213357630U (en) | 2020-10-15 | 2020-10-15 | Comprehensive purification and recovery system for pressure-equalizing and bleeding coal gas of blast furnace charging bucket |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022302552.1U CN213357630U (en) | 2020-10-15 | 2020-10-15 | Comprehensive purification and recovery system for pressure-equalizing and bleeding coal gas of blast furnace charging bucket |
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| CN213357630U true CN213357630U (en) | 2021-06-04 |
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| CN202022302552.1U Active CN213357630U (en) | 2020-10-15 | 2020-10-15 | Comprehensive purification and recovery system for pressure-equalizing and bleeding coal gas of blast furnace charging bucket |
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