CN211060681U - Recycling system of calcium carbide furnace gas - Google Patents
Recycling system of calcium carbide furnace gas Download PDFInfo
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- CN211060681U CN211060681U CN201922115033.1U CN201922115033U CN211060681U CN 211060681 U CN211060681 U CN 211060681U CN 201922115033 U CN201922115033 U CN 201922115033U CN 211060681 U CN211060681 U CN 211060681U
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- calcium carbide
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Abstract
The utility model discloses a calcium carbide furnace gas recycling system, which comprises a calcium carbide furnace, a gas treatment device, a gas holder, a pressurizing fan, a gas merging header pipe, a plurality of lime kilns and a controller; the gas outlet of the calcium carbide furnace is communicated with the gas inlet of the gas treatment equipment through a pipeline, the gas outlet of the gas treatment equipment is communicated with the gas inlet of the gas holder through a pipeline, the gas outlet of the gas holder is communicated with the pressurizing fan through a pipeline, the gas outlet of the pressurizing fan is communicated with the gas inlet of the gas merging header pipe through a pipeline, and the gas outlet of the gas merging header pipe is communicated with each lime kiln through a pipeline. Has the advantages that: the utility model has simple structure and easy realization, and fully utilizes the useful resources in the tail gas of the calcium carbide furnace; the fuel cost is reduced, and the production benefit is improved; the fuel gas entering the lime kiln is ensured to be stable, and the normal production of the lime kiln is further ensured.
Description
The technical field is as follows:
the utility model relates to a recycle system, in particular to recycle system of carbide stove burner gas.
Background art:
the industrial calcium carbide is prepared by calcium lime and coke in a calcium carbide furnace according to the equation CaO +3C → CaC2+ CO. It is a strong endothermic reaction; at temperature>1600 c at a significant rate. At present, calcium carbide is produced by adopting an electric arc furnace, namely quicklime and coke are placed in the electric arc furnace to be heated to 2000 ℃ at high temperature to generate molten calcium carbide and calcium carbide furnace gas; wherein the calcium carbide furnace gas contains CO and H2、CO2、O2And N2. The calcium carbide furnace gas is discharged after being treated traditionally, which wastes useful resources in the calcium carbide furnace gas; when the quicklime is produced, natural rocks of which the main component is calcium carbonate need to be sent to a lime kiln for calcination, fuel is needed in the calcination process, and along with the increase of the quantity of the produced quicklime, the fuel is increased, so that the production cost is increased, and the production benefit is reduced.
The utility model has the following contents:
an object of the utility model is to provide a simple structure, and make full use of the recycle system of carbide stove burner gas of useful resources in the carbide stove tail gas.
The utility model discloses by following technical scheme implement: a calcium carbide furnace gas recycling system comprises a calcium carbide furnace, gas treatment equipment, a gas holder, a pressurizing fan, a gas merging header pipe, a plurality of lime kilns and a controller; the gas outlet of the calcium carbide furnace is communicated with the gas inlet of the gas treatment equipment through a pipeline, the gas outlet of the gas treatment equipment is communicated with the gas inlet of the gas holder through a pipeline, the gas outlet of the gas holder is communicated with the pressurizing fan through a pipeline, and an adjusting valve and a first pressure sensor are sequentially arranged on the pipeline between the gas holder and the pressurizing fan; the gas outlet of the booster fan is communicated with the gas inlet of the gas merging header pipe through a pipeline, a second pressure sensor is arranged on the pipeline between the booster fan and the gas merging header pipe, and the gas outlet of the gas merging header pipe is respectively communicated with each lime kiln through a pipeline; a solenoid valve and a third pressure sensor are respectively arranged on a pipeline between the gas merging main pipe and each lime kiln; the signal output ends of the first pressure sensor, the second pressure sensor and the third pressure sensor are connected with the signal input end of the controller through signals; and the signal output end of the controller is respectively in signal connection with the regulating valve, the electromagnetic valve and the signal input end of the lime kiln.
Further, the device also comprises a butterfly valve and a blind plate valve; the butterfly valve and the blind plate valve are arranged at the air inlet of the pressurizing fan; the butterfly valve and the blind plate valve are arranged at the air outlet of the pressurizing fan; the butterfly valve and the blind plate valve are arranged at the air inlet of the lime kiln.
Further, the device comprises a nitrogen source and a diffusion chimney; a nitrogen inlet and a flue gas outlet are formed in a pipeline between the blind plate valves at the two ends of the pressurizing fan, and the nitrogen source is communicated with the nitrogen inlet through a pipeline; the smoke outlet is fixedly communicated with the diffusing chimney.
The utility model has the advantages that: 1. the utility model has simple structure and easy realization, the tail gas of the calcium carbide furnace is treated by the gas treatment equipment and then is sent to the lime kiln as fuel for combustion, and the useful resources in the tail gas of the calcium carbide furnace are fully utilized; the fuel cost is reduced, and the production benefit is improved; 2. the utility model discloses an automatic control function detects the pressure of forced draught fan air inlet and gas outlet department through first pressure sensor, second pressure sensor, controls the volume of letting in pressure stabilization of fuel gas, simultaneously through the pressure that detects lime kiln air inlet department, guarantees that the fuel gas that gets into the lime kiln is stable, and then has guaranteed the normal production of lime kiln to the capacity of lime kiln has been promoted.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.
Fig. 2 is a control system diagram according to an embodiment of the present invention.
The device comprises a calcium carbide furnace 1, gas treatment equipment 2, a gas holder 3, a pressurizing fan 4, a gas main pipe 5, a lime kiln 6, a controller 7, a butterfly valve 8, a blind plate valve 9, a nitrogen source 10, a diffusing chimney 11, a regulating valve 12, a first pressure sensor 13, a second pressure sensor 14, an electromagnetic valve 15 and a third pressure sensor 16.
The specific implementation mode is as follows:
as shown in fig. 1-2, a calcium carbide furnace gas recycling system comprises a calcium carbide furnace 1, a gas treatment device 2, a gas holder 3, a booster fan 4, a gas merging header 5, six lime kilns 6, a controller 7, a butterfly valve 8, a blind plate valve 9, a nitrogen source 10 and a diffusion chimney 11; the gas outlet of the calcium carbide furnace 1 is communicated with the gas inlet of the gas treatment equipment 2 through a pipeline, the gas outlet of the gas treatment equipment 2 is communicated with the gas inlet of the gas holder 3 through a pipeline, the gas outlet of the gas holder 3 is communicated with the pressurizing fan 4 through a pipeline, and an adjusting valve 12 and a first pressure sensor 13 are sequentially arranged on the pipeline between the gas holder 3 and the pressurizing fan 4; the gas outlet of the booster fan 4 is communicated with the gas inlet of the gas merging header pipe 5 through a pipeline, a second pressure sensor 14 is arranged on the pipeline between the booster fan 4 and the gas merging header pipe 5, and the gas outlet of the gas merging header pipe 5 is respectively communicated with each lime kiln 6 through a pipeline; a solenoid valve 15 and a third pressure sensor 16 are respectively arranged on a pipeline between the gas merging header pipe 5 and each lime kiln 6; the signal output ends of the first pressure sensor 13, the second pressure sensor 14 and the third pressure sensor 16 are all connected with the signal input end of the controller 7 through signals; the signal output end of the controller 7 is respectively connected with the signal input ends of the regulating valve 12, the electromagnetic valve 15 and the lime kiln 6 through signals.
A butterfly valve 8 and a blind plate valve 9 are arranged at the air inlet of the booster fan 4; a butterfly valve 8 and a blind plate valve 9 are arranged at the air outlet of the booster fan 4; a butterfly valve 8 and a blind plate valve 9 are arranged at the air inlet of the lime kiln 6. A nitrogen inlet and a flue gas outlet are arranged on a pipeline between the blind plate valves 9 at the two ends of the booster fan 4, and a nitrogen source 10 is communicated with the nitrogen inlet through the pipeline; a diffusion chimney 11 is fixedly communicated with the smoke outlet.
The working process is as follows: after tail gas generated in the working process of the calcium carbide furnace 1 is purified by the gas treatment equipment 2, the residual tail gas is used as fuel gas to enter the gas holder 3 for storage, and useful resources in the tail gas of the calcium carbide furnace 1 are fully utilized; the fuel cost is reduced, and the production benefit is improved; the controller 7 controls the regulating valve 12 to be opened, fuel gas in the gas holder 3 accumulates at the air inlet of the pressurizing fan 4, the first pressure sensor 13 transmits the detected pressure value at the air inlet of the pressurizing fan 4 to the controller 7, when the pressure value at the air inlet of the pressurizing fan 4 is detected to be lower than 2KPa, the controller 7 controls the regulating valve 12 to be opened, until the detected pressure value at the air inlet of the pressurizing fan 4 reaches more than 2KPa, the controller 7 controls the pressurizing fan 4 to be started, meanwhile, the second pressure sensor 14 detects the pressure value at the air outlet of the pressurizing fan 4, when the pressure value at the air outlet of the pressurizing fan 4 is detected to be lower than 10KPa, the controller 7 controls the regulating valve 12 to be continuously opened until the detected pressure value at the air outlet of the pressurizing fan 4 reaches more than 10KPa, and the pressure value is kept; when the pressure value at the air outlet of the booster fan 4 is detected to be lower than 5KPa, the controller 7 controls the regulating valve 12, all the electromagnetic valves 15 and the booster fan 4 to stop running; when the pressure values of the air inlet and the air outlet of the booster fan 4 are kept normal, an operator controls the electromagnetic valve 15 of the corresponding lime kiln 6 to be opened through the controller 7, and fuel gas is introduced into the lime kiln 6; the third pressure sensor 16 detects the pressure of the fuel gas entering the corresponding lime kiln 6 at any moment and transmits a signal to the controller 7, and when the detected pressure value is lower than a set value, the controller 7 controls the electromagnetic valve 15 and the lime kiln 6 to be closed in sequence; until the pressure values detected by the rest of the third pressure sensors 16 are higher than the set value, the controller 7 stops closing the rest of the electromagnetic valves 15 and the lime kiln 6; the utility model discloses an automatic control function, through first pressure sensor 13, the pressure of 4 air inlets of booster fan and gas outlet department is detected to second pressure sensor 14, the volume of letting in pressure of controlling the fuel gas is stable, simultaneously through the pressure that detects 6 air inlets of lime kiln department, the fuel gas that guarantees to get into lime kiln 6 is stable, and then the normal production of lime kiln 6 has been guaranteed, and the output of lime kiln 6 has been promoted, every lime kiln 6 can carry 0.5t/h of producing, quick lime 8760t can increase production every year. The net profit of each ton of quicklime is about 100 yuan, so that the profit of about 876000 yuan can be realized each year.
When needing to overhaul the forced draught fan, operating personnel closes butterfly valve 8 and blind plate valve 9 of forced draught fan air inlet department and air outlet department to open the valve that lets in nitrogen gas and diffuse the valve on the chimney 11, replace the coal gas in the pipeline away, avoid maintenance personal to appear the problem of carbon monoxide poisoning, guaranteed that maintenance personal's is healthy, the utility model discloses simple structure easily realizes.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A calcium carbide furnace gas recycling system is characterized by comprising a calcium carbide furnace, gas treatment equipment, a gas holder, a pressurizing fan, a gas merging header pipe, a plurality of lime kilns and a controller; the gas outlet of the calcium carbide furnace is communicated with the gas inlet of the gas treatment equipment through a pipeline, the gas outlet of the gas treatment equipment is communicated with the gas inlet of the gas holder through a pipeline, the gas outlet of the gas holder is communicated with the pressurizing fan through a pipeline, and an adjusting valve and a first pressure sensor are sequentially arranged on the pipeline between the gas holder and the pressurizing fan; the gas outlet of the booster fan is communicated with the gas inlet of the gas merging header pipe through a pipeline, a second pressure sensor is arranged on the pipeline between the booster fan and the gas merging header pipe, and the gas outlet of the gas merging header pipe is respectively communicated with each lime kiln through a pipeline; a solenoid valve and a third pressure sensor are respectively arranged on a pipeline between the gas merging main pipe and each lime kiln; the signal output ends of the first pressure sensor, the second pressure sensor and the third pressure sensor are connected with the signal input end of the controller through signals; and the signal output end of the controller is respectively in signal connection with the regulating valve, the electromagnetic valve and the signal input end of the lime kiln.
2. The recycling system of calcium carbide furnace gas as claimed in claim 1, further comprising a butterfly valve and a blind plate valve; the butterfly valve and the blind plate valve are arranged at the air inlet of the pressurizing fan; the butterfly valve and the blind plate valve are arranged at the air outlet of the pressurizing fan; the butterfly valve and the blind plate valve are arranged at the air inlet of the lime kiln.
3. The recycling system of calcium carbide furnace gas as claimed in claim 2, comprising a nitrogen source and a blow-off chimney; a nitrogen inlet and a flue gas outlet are formed in a pipeline between the blind plate valves at the two ends of the pressurizing fan, and the nitrogen source is communicated with the nitrogen inlet through a pipeline; the smoke outlet is fixedly communicated with the diffusing chimney.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922115033.1U CN211060681U (en) | 2019-11-29 | 2019-11-29 | Recycling system of calcium carbide furnace gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922115033.1U CN211060681U (en) | 2019-11-29 | 2019-11-29 | Recycling system of calcium carbide furnace gas |
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| Publication Number | Publication Date |
|---|---|
| CN211060681U true CN211060681U (en) | 2020-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922115033.1U Expired - Fee Related CN211060681U (en) | 2019-11-29 | 2019-11-29 | Recycling system of calcium carbide furnace gas |
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| CN (1) | CN211060681U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113185151A (en) * | 2021-05-13 | 2021-07-30 | 广东韶钢松山股份有限公司 | Quicklime slaking device and use method thereof |
-
2019
- 2019-11-29 CN CN201922115033.1U patent/CN211060681U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113185151A (en) * | 2021-05-13 | 2021-07-30 | 广东韶钢松山股份有限公司 | Quicklime slaking device and use method thereof |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200721 Termination date: 20201129 |