CN213295242U - Industrial gas preparation device by dry quenching of lime kiln waste gas - Google Patents
Industrial gas preparation device by dry quenching of lime kiln waste gas Download PDFInfo
- Publication number
- CN213295242U CN213295242U CN202021820348.2U CN202021820348U CN213295242U CN 213295242 U CN213295242 U CN 213295242U CN 202021820348 U CN202021820348 U CN 202021820348U CN 213295242 U CN213295242 U CN 213295242U
- Authority
- CN
- China
- Prior art keywords
- dry quenching
- gas
- lime kiln
- waste gas
- closed
- 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
Links
Images
Landscapes
- Coke Industry (AREA)
Abstract
The utility model relates to a lime kiln tail gas utilizes technical field, especially relates to lime kiln waste gas dry quenching system industrial gas device. The device comprises a closed dry quenching furnace, an air supply system arranged at the lower part of the closed dry quenching furnace, a circulating air system arranged at the lower part of the closed dry quenching furnace and a dust removal system arranged outside the closed dry quenching furnace; the gas supply system comprises a lime kiln, a lime kiln waste gas deoxidation purifier and a lime kiln waste gas supply fan; the lime kiln waste gas deoxidation purifier is connected with a lime kiln, and the lime kiln waste gas air supply fan is arranged between the closed dry quenching furnace and the lime kiln waste gas deoxidation purifier; waste gas generated by a lime kiln in the gas supply system is purified by a lime kiln waste gas deoxidation purifier and then is conveyed to a sealed dry quenching coke furnace body for utilization, and the waste gas is recycled and discharged without pollution through a circulating gas system and a dust removal system.
Description
Technical Field
The utility model relates to a lime kiln tail gas utilizes technical field, especially relates to lime kiln waste gas dry quenching system industrial gas device.
Background
The discharge pressure of carbon dioxide brought by industrial production is gradually strengthened, wherein the amount of carbon dioxide discharged into the atmosphere in national lime production is 3 hundred million tons per year, and at present, the carbon dioxide generated by a lime kiln is not industrially utilized in a large scale in the world, and a large amount of carbon monoxide prepared from coal is used as an industrial raw material or fuel in the chemical industry and the heating and calcining industry; nitrogen is used in the dry quenching link of coke oven production at present, and a proper amount of industrial N needs to be continuously supplemented into a gas circulation system in the nitrogen circulation system2Diluting combustible components in the circulating gas, and then dispersing a corresponding amount of the circulating gas; or continuously introducing a proper amount of air into the circulating gas led out after the temperature is increased to 900-960 ℃ to burn the growing combustible components, and then radiating the corresponding amount of circulating gas after the circulating gas is cooled by a boiler; no matter which method is used for releasing the circulating gas, energy waste is caused, and nitrogen oxides are formed and discharged, so that the environment is polluted while the energy is wasted;
carbon monoxide is frequently used in chemical industry, is an important fuel or raw material in organic chemical industry and inorganic chemical industry, can also be used as a catalyst, a reducing agent and the like of some reactions, and plays a vital role in the chemical industry;
therefore, a device which can convert carbon dioxide generated by the lime kiln into carbon monoxide through a dry quenching link, reduce the carbon dioxide emission of the lime kiln and reduce the coal consumption in the coal chemical industry is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem, it is not enough to the technique that the aforesaid exists, the dry coke quenching system industrial gas device of lime kiln waste gas is provided, adopt the sealed coke dry quenching furnace body pipe connection air supply system respectively, circulating gas system and dust pelletizing system, the waste gas that the lime kiln among the air supply system produced is through lime kiln waste gas deoxidation clarifier purification back, carry and utilize in the sealed coke dry quenching furnace body, rethread circulating gas system and dust pelletizing system accomplish waste gas recycle and pollution-free emission.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the device comprises a closed dry quenching furnace, an air supply system arranged at the lower part of the closed dry quenching furnace, a circulating air system arranged at the lower part of the closed dry quenching furnace and a dust removal system arranged outside the closed dry quenching furnace; the gas supply system comprises a lime kiln, a lime kiln waste gas deoxidation purifier and a lime kiln waste gas supply fan; the lime kiln waste gas deoxidation purifier is connected with a lime kiln, the lime kiln waste gas deoxidation purifier is connected with a lime kiln waste gas air supply fan, and the lime kiln waste gas air supply fan is arranged between the closed dry quenching furnace and the lime kiln waste gas deoxidation purifier.
Furthermore, the circulating gas system comprises a steam boiler, a power generation system, a dry quenching gas dust remover, a dry quenching gas circulating fan, an external air supply fan and a gas purifier; the system comprises a steam boiler, a power generation system, a dry quenching gas dust remover, a dry quenching gas circulating fan, an external air supply fan and a gas purifier, wherein the steam boiler is connected with the upper part of the closed dry quenching furnace, the power generation system is connected with the steam boiler through double pipelines, one end of the dry quenching gas dust remover is connected with the steam boiler, the other end of the dry quenching gas dust remover is connected with the dry quenching gas circulating fan, the gas outlet end of the dry quenching gas circulating fan is respectively connected with the lower part.
Further, a closed coke discharging machine is arranged at the bottom of the closed dry quenching furnace; the closed dry quenching furnace is used for placing coke from a coke furnace, and the closed dry quenching furnace is used for placing coke from the top.
Furthermore, the dust removal system comprises a dust hood, an environment dust remover and a dust removal fan; the dust hood is respectively arranged at the top of the closed dry quenching furnace and above the closed coke discharging machine, the pipeline of the environment dust remover is connected with the dust hood, and the dust removing fan is connected with the environment dust remover.
Compared with the prior art, the utility model has the advantages of it is following:
1. through the mutual cooperation of the sealed coke dry quenching furnace body, the gas supply system, the circulating gas system and the dust removal system, the waste gas of the lime kiln is utilized, and no other pollutants are discharged; the utilization value of waste gas and the environmental protection property of industrial production are effectively improved;
2. the closed dry quenching furnace is connected through the gas supply system, carbon dioxide waste gas generated by a lime kiln in the gas supply system replaces nitrogen to cool red carbon put into the closed dry quenching furnace, carbon monoxide is generated by reaction at the same time, and the carbon monoxide is recycled, so that the utilization rate of the waste gas is effectively increased, the use of the nitrogen is abandoned, the expenditure of the cost is reduced, and no oxynitride is discharged;
3. through the outside dust pelletizing system of closed dry quenching stove and the circulating gas system of connecting closed dry quenching stove, accomplish no exhaust emission to set up respectively in the suction hood of closed dry quenching stove top and closed coke play stove top, cooperate the environment dust remover, when making no exhaust emission, accomplish no dust pollution, the effectual feature of environmental protection that has increased.
Drawings
FIG. 1 is a schematic connection diagram of a device for preparing industrial gas by dry quenching of lime kiln waste gas.
In the figure: 1. a lime kiln; 2. a lime kiln waste gas deoxidation purifier; 3. a lime kiln waste gas air supply fan; 4. a dust hood; 5. a closed coke discharging machine; 6. a closed dry quenching furnace; 7. a dry quenching gas circulating fan; 8. a dry quenching gas dust remover; 9. an external air blower; 10. a gas purifier; 11. a power generation system; 12. a steam boiler; 13. a coke oven; 14. an environmental dust collector; 15. a dust removal fan.
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. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1, the coke dry quenching device comprises a closed dry quenching furnace 6, a gas supply system arranged at the lower part of the closed dry quenching furnace 6, a circulating gas system arranged at the lower part of the closed dry quenching furnace 6 and a dust removal system arranged outside the closed dry quenching furnace 6; the gas supply system comprises a lime kiln 1, a lime kiln waste gas deoxidation purifier 2 and a lime kiln waste gas supply fan 3; the lime kiln waste gas deoxidation purifier 2 is connected with the lime kiln 1, the lime kiln waste gas deoxidation purifier 2 is connected with the lime kiln waste gas air feeding fan 3, and the lime kiln waste gas air feeding fan 3 is arranged between the closed dry quenching furnace 6 and the lime kiln waste gas deoxidation purifier 2.
The circulating gas system comprises a steam boiler 12, a power generation system 11, a dry quenching gas dust remover 8, a dry quenching gas circulating fan 7, an external fan 9 and a gas purifier 10; the steam boiler 12 is connected with the upper part of the closed dry quenching furnace 6, the power generation system 11 is connected with the steam boiler 12 through double pipelines, one end of the dry quenching gas dust remover 8 is connected with the steam boiler 12, the other end of the dry quenching gas dust remover 8 is connected with the dry quenching gas circulating fan 7, the gas outlet end of the dry quenching gas circulating fan 7 is respectively connected with the lower part of the closed dry quenching furnace 6 and the external air supply fan 9 through pipelines, and the external air supply fan 9 is connected with the gas purifier 10.
The bottom of the closed dry quenching furnace 6 is provided with a closed coke discharging machine 5; the coke is put into the closed dry quenching furnace 6 from a coke furnace 13, and the coke is put into the closed dry quenching furnace 6 from the top.
The dust removal system comprises a dust hood 4, an environmental dust remover 14 and a dust removal fan 15; the dust hood 4 is respectively arranged at the top of the closed dry quenching furnace 6 and above the closed coke discharging machine 5, the environment dust remover 14 is connected with the dust hood 4 through a pipeline, and the dust removing fan 15 is connected with the environment dust remover 14.
The working principle is that the inert gas of the dry quenching adopts the waste gas discharged by a lime kiln, dust and oxygen are removed in a lime kiln waste gas deoxidation purifier, and the waste gas is conveyed to the bottom of the closed dry quenching furnace through a pipeline; the low-temperature lime kiln waste gas ascends from the closed type dry quenching furnace and contacts with the red coke, the temperature of the red coke is reduced, and the flame on the red coke is extinguished; the formed high-temperature carbon dioxide reacts with high-temperature coke on the upper part to generate carbon monoxide, the gas rich in carbon monoxide is discharged from the upper part of the closed dry quenching furnace, and is cooled by heat exchange of a steam boiler, and simultaneously steam is generated to be externally supplied for power generation; after dust removal, the cooled gas rich in carbon monoxide is driven by a dry quenching gas circulating fan and is blown into the bottom of a closed dry quenching furnace for recycling, a pressure detection device and a carbon monoxide concentration detection device are arranged on a circulating dry quenching gas pipeline between the closed dry quenching furnace and the dry quenching gas circulating fan, the pipeline pressure and the carbon monoxide concentration in the pipeline are respectively detected, the pressure detection device can be a pressure gauge, and the carbon monoxide concentration detection device can be a carbon monoxide detector; when the carbon monoxide in the pipeline reaches the set pressure and the concentration of the carbon monoxide is controlled to be 30% -99%, controlling the operating frequency of an external air blower, pumping out surplus circulating dry quenching gas, purifying the gas by a gas purifier, and then externally conveying the gas to be used as a chemical raw material or fuel; and discharging the coke after the red carbon is subjected to dry quenching and temperature reduction out of the closed dry quenching furnace through a closed coke discharging machine for outward transportation.
Dust suppression and collection are carried out by arranging a dust hood at a dust raising point for feeding and discharging coke, and dust-containing gas is discharged by a dust removal fan after being dedusted by an environmental deduster, so that the generation of raised dust is avoided; the device is connected by pipelines.
Closed dry quenching furnace: in the furnace, carbon dioxide is reduced into carbon monoxide by red coke, and the thermochemical reaction equation is as follows: CO 22(g) + c(s) ═ 2CO (g) +172.43 (KJ/mole), the reaction indicating 1 mole of CO2Reducing to obtain 1 mol of carbon to generate 2 mol of CO, wherein the required heat is 172.43KJ, and the conversion of the required heat into 1 ton of carbon dioxide needs 0.273 ton of carbon to generate 1.273 ton of carbon monoxide, and the absorbed heat is 3920MJ and is converted into standard coal of 0.134 t; and the unreacted carbon dioxide as the dry quenching gas in the furnace is sent into the closed dry quenching furnace for recycling through a dry quenching gas circulating fan.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (4)
1. The device for preparing industrial gas by dry quenching of lime kiln waste gas is characterized in that: the device comprises a closed dry quenching furnace (6), an air supply system arranged at the lower part of the closed dry quenching furnace (6), a circulating gas system arranged at the lower part of the closed dry quenching furnace (6) and a dust removal system arranged outside the closed dry quenching furnace (6); the gas supply system comprises a lime kiln (1), a lime kiln waste gas deoxidation purifier (2) and a lime kiln waste gas supply fan (3); the lime kiln waste gas deoxidation purifier (2) is connected with the lime kiln (1), the lime kiln waste gas deoxidation purifier (2) is connected with the lime kiln waste gas air supply fan (3), and the lime kiln waste gas air supply fan (3) is arranged between the closed dry quenching furnace (6) and the lime kiln waste gas deoxidation purifier (2).
2. The device for preparing industrial gas by dry quenching of lime kiln waste gas as claimed in claim 1, characterized in that: the circulating gas system comprises a steam boiler (12), a power generation system (11), a dry-quenching gas dust remover (8), a dry-quenching gas circulating fan (7), an external fan (9) and a gas purifier (10); the device is characterized in that the steam boiler (12) is connected with the upper part of the closed dry quenching furnace (6), the power generation system (11) is connected with the steam boiler (12) through double pipelines, one end of the dry quenching gas dust remover (8) is connected with the steam boiler (12), the other end of the dry quenching gas dust remover (8) is connected with the dry quenching gas circulating fan (7), the gas outlet end of the dry quenching gas circulating fan (7) is respectively connected with the lower part of the closed dry quenching furnace (6) and the external air supply fan (9) through pipelines, and the external air supply fan (9) is connected with the gas purifier (10).
3. The device for preparing industrial gas by dry quenching of lime kiln waste gas as claimed in claim 1, characterized in that: the bottom of the closed dry quenching furnace (6) is provided with a closed coke discharging machine (5); the closed dry quenching furnace (6) is filled with coke from a coke furnace (13), and the closed dry quenching furnace (6) is filled with coke from the top.
4. The device for preparing industrial gas by dry quenching of lime kiln waste gas as claimed in claim 3, characterized in that: the dust removal system comprises a dust hood (4), an environmental dust remover (14) and a dust removal fan (15); the dust hood (4) is respectively arranged at the top of the closed dry quenching furnace (6) and above the closed coke discharging machine (5), the environment dust remover (14) is connected with the dust hood (4) through a pipeline, and the dust removing fan (15) is connected with the environment dust remover (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021820348.2U CN213295242U (en) | 2020-08-27 | 2020-08-27 | Industrial gas preparation device by dry quenching of lime kiln waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021820348.2U CN213295242U (en) | 2020-08-27 | 2020-08-27 | Industrial gas preparation device by dry quenching of lime kiln waste gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213295242U true CN213295242U (en) | 2021-05-28 |
Family
ID=76026934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021820348.2U Active CN213295242U (en) | 2020-08-27 | 2020-08-27 | Industrial gas preparation device by dry quenching of lime kiln waste gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213295242U (en) |
-
2020
- 2020-08-27 CN CN202021820348.2U patent/CN213295242U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102303883B (en) | Method for preparing calcium oxide and sulfur by double-atmosphere fluidized roasting of desulfurated gypsum | |
| CN102258923A (en) | Method for recycling and reusing tail gas of calcium carbide furnace | |
| CN106276901B (en) | Method and system for producing calcium carbide and CO gas by using oxygen thermal method | |
| CN104129931B (en) | A kind of indirect heating roasting assembly with generating set | |
| CN104058608B (en) | A kind of shaft furnace of partition heated material | |
| CN115159876B (en) | Low-energy-consumption carbon-trapping cement clinker production system and cement clinker preparation method | |
| CN110982966B (en) | Multi-stage recovery system and method for blast furnace slag and coal gas waste heat | |
| CN105314894A (en) | Rotary kiln device and method for indirectly producing lime and recycling carbon dioxide | |
| CN206669750U (en) | Energy-saving plasma dangerous waste disposal system | |
| CN205347482U (en) | System for still crude gas direct reduction is metallurgical to utilize carbide stove tail gas system | |
| CN204058261U (en) | A kind of indirect heating roasting assembly with generating set | |
| CN104119007B (en) | A kind of telescopic shaft furnace with TRT | |
| CN213295242U (en) | Industrial gas preparation device by dry quenching of lime kiln waste gas | |
| CN101372333B (en) | Method and apparatus for producing carbon dioxide by heat decomposition of carbonate | |
| CN116477854B (en) | Lime kiln equipment based on carbon emission reduction and control method thereof | |
| CN105271841A (en) | Rotary kiln device and method for constant temperature indirect calcination of limestone | |
| CN205170895U (en) | Rotary kiln CO2 and argon gas are used for controlling means of converter smelting | |
| CN203454812U (en) | Drying system for silicon-calcium slag via waste smoke heat of rotary kiln | |
| CN116554934A (en) | Blast furnace gas conversion device and conversion method thereof | |
| CN109266373A (en) | A kind of coal chemical industry power polygenerations systeme based on Cabase compound | |
| KR101440549B1 (en) | Method for preparing CO using exhaust gas and method for utilizing the same | |
| CN212403960U (en) | Device for producing coal gas by non-carbon-discharging lime kiln | |
| CN204022689U (en) | A kind of telescopic shaft furnace with power generation assembly | |
| CN104261700A (en) | Device and method for manufacturing dry ice by utilizing radiant heat to produce active lime | |
| CN204625479U (en) | A kind of indirect calcination is produced lime, is reclaimed the rotary kiln device of carbonic acid gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |