CN211060680U - Purification system of calcium carbide furnace gas - Google Patents
Purification system of calcium carbide furnace gas Download PDFInfo
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- CN211060680U CN211060680U CN201922114899.0U CN201922114899U CN211060680U CN 211060680 U CN211060680 U CN 211060680U CN 201922114899 U CN201922114899 U CN 201922114899U CN 211060680 U CN211060680 U CN 211060680U
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- 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
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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Abstract
The utility model discloses a clean system of carbide stove burner gas, it includes carbide stove, a plurality of settlers, coarse gas fan, sack cleaner, clean gas fan, user, diffuses chimney, ash bin and controller. Has the advantages that: the utility model has simple structure, easy realization and realization of automatic control function; the safety and the high efficiency of dust removal are ensured, the service life of the whole system can be greatly prolonged, and the maintenance period is shortened; the frequency of blocking the pipeline is reduced; time and labor are saved; the energy consumption is saved, the cost is reduced, and the safety of field personnel is ensured.
Description
The technical field is as follows:
the utility model relates to a recycle system, in particular to a purification 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; the outlet temperature of the tail gas of the calcium carbide furnace is 500-1000 ℃, wherein the dust content is 100-150 g/Nm3The CO content of the furnace gas reaches 75-85%, and the furnace gas is a gas with a high heat value and has the characteristics of flammability, explosiveness, easy dust adhesion, easy blockage and the like; at present, a domestic closed calcium carbide furnace gas purification system mostly adopts a dry dust removal principle, namely dust is removed by a precipitator and a bag type dust remover and then is sent to a user for use; the following problems exist in the above processing method: 1. because the temperature of the furnace gas outlet is higher and contains tar, the tar can be liquefied when the temperature of the furnace gas is lower than 230 ℃ and is adhered to the cloth bag, the equipment wall and the pipeline wall; the influence on the dust removal effect of the bag type dust collector is large, and the normal conveying of furnace gas can be influenced by long-term accumulation; when the temperature is too high and is higher than 280 ℃, cloth bag combustion of the bag type dust collector can be caused, and even serious production accidents can be caused; in a word, the tail gas temperature of the electric furnace is not ideal to control at present, the service life of the bag type dust collector is short, and the maintenance cost is high; 2. at present precipitator and bag collector subside the dust that filters and send to the ash bin through the drag chain conveyor, but adopt drag chain conveyor to carry the dust, power consumption is great, still need once overhaul drag chain conveyor every half an year simultaneously, and the cost of overhaul is big, but also has the danger of burn, poisoning.
The utility model has the following contents:
an object of the utility model is to provide a simple structure has prolonged entire system life greatly, and has practiced thrift the purification system of carbide stove burner gas of cost.
The utility model discloses by following technical scheme implement: a calcium carbide furnace gas purification system comprises a calcium carbide furnace, a plurality of settlers, a raw gas fan, a bag-type dust remover, a clean gas fan, a user, a diffusing chimney, an ash bin and a controller; a pressure sensor is arranged on the calcium carbide furnace, and an air outlet of the calcium carbide furnace is communicated with an air inlet of the first settler through a pipeline; an electric valve is arranged on a pipeline between the calcium carbide furnace and the first settler; an air outlet at the upper end of each settler is connected with an air inlet of the next adjacent settler through a pipeline, and an air outlet of the last settler is communicated with an air inlet of the crude gas fan through a pipeline; a temperature sensor is arranged on a pipeline between the last settler and the crude gas fan; the gas outlet of the crude gas fan is communicated with the gas inlet of the bag-type dust collector through a pipeline; the air outlet of the bag-type dust collector is communicated with the air inlet of the air purifying fan through a pipeline; the air outlet of the air purifying fan is respectively communicated with the air inlet of the user and the air inlet of the diffusing chimney through pipelines; a hydrogen concentration detection sensor, an oxygen concentration detection sensor and an air supply valve are arranged on a pipeline between the air purifying fan and the user; a bleeding valve is arranged between the air purifying fan and the bleeding chimney; the bag-type dust collector and the ash discharge port of each settler are communicated with the feed inlet of the ash bin through pipelines; an ash discharge valve is arranged on a pipeline between the bag-type dust collector and the ash bin; an ash discharge valve is also arranged on a pipeline between the settler and the ash bin; the signal output ends of the pressure sensor, the temperature sensor, the hydrogen concentration detection sensor and the oxygen concentration detection sensor are connected with the signal input end of the controller through signals; and the signal output end of the controller is respectively connected with the signal input ends of the electrode of the calcium carbide furnace, the electric valve, the coarse gas fan, the clean gas fan, the gas supply valve, the blow-off valve and the ash discharge valve through signals.
Further, a first gas supply pipe inclining upwards is arranged at a gas outlet of the calcium carbide furnace; one end of the first air supply pipe is communicated with an air outlet of the calcium carbide furnace; the other end of the first air supply pipe is connected with a second air supply pipe through an elbow; the first air supply pipe, the elbow and the second air supply pipe are connected to form a herringbone shape; a third air supply pipe is obliquely arranged on an air inlet of the first settler, and the electric valve is arranged on the third air supply pipe; the third air supply pipe is connected with the second air supply pipe through a corrugated pipe; the outer walls of the first air supply pipe, the elbow and the second air supply pipe are coated with a water-cooling jacket, a water inlet of the water-cooling jacket is communicated with a water outlet of a circulating cooling water system through a pipeline, and an adjusting valve is arranged on the pipeline between the water-cooling jacket and the circulating cooling water system; the water outlet of the water-cooling jacket is communicated with the water inlet of the circulating cooling water system through a pipeline; and the signal input end of the regulating valve is in signal connection with the signal output end of the controller.
Further, the pipe diameters of the first air supply pipe, the second air supply pipe and the third air supply pipe are 650 mm.
Further, vibrators are respectively arranged at the bottom of the bag-type dust collector and the bottom of each settler; and the signal input end of the vibrator is connected with the signal output end of the controller through a signal.
Furthermore, a corrugated pipe is communicated with the ash outlet and the air outlet of each settler; the dust outlet of the bag-type dust collector is provided with a corrugated pipe.
Further, an ignition device is arranged at the top of the diffusing chimney; and the signal input end of the ignition device is connected with the signal output end of the controller through a signal.
Further, an air outlet of the air purifying fan is communicated with a back flushing port of the bag-type dust remover through a pipeline, and a back flushing valve is arranged on the pipeline between the air purifying fan and the bag-type dust remover; and the signal input end of the back flushing valve is in signal connection with the signal output end of the controller.
The utility model has the advantages that: 1. the utility model has simple structure, easy realization and realization of automatic control function; the actions of the calcium carbide furnace, the crude gas fan and the regulating valve are controlled by detecting the temperature of furnace gas in front of the bag-type dust collector; when the temperature sensor detects that the temperature is lower than 230 ℃, the controller controls the regulating valve to be closed, so that tar is prevented from being liquefied and adhered to the cloth bag, the equipment wall and the pipeline wall to cause blockage; when the temperature sensor detects that the temperature is higher than 280 ℃, the controller controls the regulating valve to be adjusted to the maximum, delays for a certain time, and controls the electrode of the calcium carbide furnace to be powered off and the coarse gas fan to be stopped when the temperature is still higher than 280 ℃, so that the combustion of the bag-type dust collector caused by overhigh temperature of furnace gas is avoided; the safety and the high efficiency of dust removal are ensured, the service life of the whole system can be greatly prolonged, and the maintenance period is shortened; 2. the first air supply pipe, the elbow and the second air supply pipe are arranged in a herringbone mode after being connected, furnace gas of the calcium carbide furnace is guaranteed to pass through an inclined pipeline, dust in the furnace gas can fall into the settler due to self weight, the phenomenon that the dust is accumulated in the horizontal pipeline due to the fact that the dust passes through the horizontal pipeline is avoided, the pipeline is further blocked, and the frequency of blocking the pipeline is reduced; meanwhile, the inclined pipeline is cleaned only by knocking the pipeline by an operator, and dust in the pipeline falls into the settler due to self weight, so that the pipeline is not required to be disassembled for cleaning, and time and labor are saved; 3. the ash discharge ports of the settler and the bag-type dust collector are communicated with the ash inlet of the dust through a pipeline; the dust of the settler and the bag-type dust collector falls into the dust bin by means of self gravity, a chain scraper conveyor is not needed, energy consumption is saved, cost is reduced, and meanwhile, compared with the chain scraper conveyor, the pipeline has good sealing performance, and safety of field personnel is guaranteed.
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 specific implementation mode is as follows:
as shown in fig. 1-2, a purification system for calcium carbide furnace gas comprises a calcium carbide furnace 1, 3 settlers 2, a raw gas fan 3, a bag-type dust collector 4, a clean gas fan 5, a user 6, a diffusing chimney 7, an ash bin 8 and a controller 9; a pressure sensor 10 is arranged on the calcium carbide furnace 1, and an air outlet of the calcium carbide furnace 1 is communicated with an air inlet of the first settler 2 through a pipeline; an electric valve 11 is arranged on a pipeline between the calcium carbide furnace 1 and the first settler 2; an air outlet at the upper end of each settler 2 is connected with an air inlet of the next adjacent settler 2 through a pipeline, and an air outlet of the last settler 2 is communicated with an air inlet of a crude gas fan 3 through a pipeline; a temperature sensor 12 is arranged on a pipeline between the last settler 2 and the crude gas fan 3; the air outlet of the crude gas fan 3 is communicated with the air inlet of the bag-type dust collector 4 through a pipeline; the air outlet of the bag-type dust collector 4 is communicated with the air inlet of the air purifying fan 5 through a pipeline; the air outlet of the air purifying fan 5 is respectively communicated with the air inlets of the user 6 and the diffusing chimney 7 and the back flushing port of the bag-type dust collector 4 through pipelines; a hydrogen concentration detection sensor 13, an oxygen concentration detection sensor 14 and an air supply valve 15 are arranged on a pipeline between the air purifying fan 5 and the user 6, and a back flushing valve 16 is arranged on a pipeline between the air purifying fan 5 and the bag-type dust collector 4; a bleeding valve 17 is arranged between the purified air fan 5 and the bleeding chimney 7; an ignition device 18 is arranged at the top of the diffusing chimney 7; the bag-type dust remover 4 and the dust discharge port of each precipitator 2 are communicated with the feed port of the dust bin 8 through pipelines, dust of the precipitators 2 and the bag-type dust remover 4 falls into the dust bin 8 by self gravity, a chain plate conveyor is not needed, energy consumption is saved, cost is reduced, and meanwhile, compared with the chain plate conveyor, the pipelines have good sealing performance, and safety of field personnel is guaranteed; the corrugated pipes 19 are communicated and arranged on the ash outlet and the air outlet of each settler 2, so that the pipeline connected with the corrugated pipes 19 can still keep a sealing state under the condition of thermal expansion and cold contraction, and the corrugated pipes 19 play a role in buffering the connected pipeline in the vibration process of the vibrator 21, thereby avoiding the situation that the joint of the pipeline connection is not sealed again due to vibration; a bellows 19 is arranged on the ash outlet of the bag-type dust collector 4; an ash discharge valve 20 is arranged on a pipeline between the bag-type dust collector 4 and the ash bin 8; the bottom of the bag-type dust collector 4 and the bottom of each settler 2 are respectively provided with a vibrator 21; an ash discharge valve 20 is also provided in the conduit between the settler 2 and the ash bin 8.
A first gas supply pipe 22 which inclines upwards is arranged at the gas outlet of the calcium carbide furnace 1; one end of the first air supply pipe 22 is communicated with an air outlet of the calcium carbide furnace 1; the other end of the first air supply pipe 22 is connected with a second air supply pipe 24 through an elbow 23; the first air supply pipe 22, the elbow 23 and the second air supply pipe 24 are connected to form a herringbone shape; the furnace gas of the calcium carbide furnace 1 is ensured to pass through the inclined pipeline, dust in the furnace gas can fall into the settler 2 due to self weight, the dust is prevented from accumulating in the horizontal pipeline due to the fact that the furnace gas passes through the horizontal pipeline, the pipeline is further blocked, and the frequency of blocking the pipeline is reduced; meanwhile, the inclined pipeline is cleaned only by knocking the pipeline by an operator, and dust in the pipeline falls into the settler 2 due to self weight, so that the pipeline is not required to be disassembled for cleaning, and time and labor are saved; a third air supply pipe 25 is obliquely arranged on an air inlet of the first settler 2, and an electric valve 11 is arranged on the third air supply pipe 25; the third air supply pipe 25 and the second air supply pipe 24 are connected by a corrugated pipe 19; the outer walls of the first air supply pipe 22, the elbow 23 and the second air supply pipe 24 are coated with a water cooling jacket 26, the water inlet of the water cooling jacket 26 is communicated with the water outlet of a circulating cooling water system 27 through a pipeline, and a regulating valve 28 is arranged on the pipeline between the water cooling jacket 26 and the circulating cooling water system 27; the water outlet of the water-cooling jacket 26 is communicated with the water inlet of the circulating cooling water system 27 through a pipeline; the pipe diameters of the first air feed pipe 22, the second air feed pipe 24 and the third air feed pipe 25 are 650 mm.
The signal output ends of the pressure sensor 10, the temperature sensor 12, the hydrogen concentration detection sensor 13 and the oxygen concentration detection sensor 14 are connected with the signal input end of the controller 9 through signals; the signal output end of the controller 9 is respectively connected with the signal input ends of the electrode of the calcium carbide furnace 1, the electric valve 11, the crude gas fan 3, the clean gas fan 5, the gas supply valve 15, the blow-off valve 17, the ash discharge valve 20, the vibrator 21, the ignition device 18, the regulating valve 28 and the back-blowing valve 16 through signals.
The working process is as follows: furnace gas discharged by the calcium carbide furnace 1 sequentially passes through a first gas feed pipe 22, an elbow 23, a second gas feed pipe 24 and a third gas feed pipe 25 and enters a first settler 2, and 50% of dust and tar are collected; cooling water is introduced into the water-cooling jacket 26 to cool the furnace gas; the furnace gas treated by the first precipitator 2 sequentially passes through a second precipitator 2 and a last precipitator 2 to capture 25% of dust and tar; the furnace gas treated by the last precipitator 2 is sent into a bag-type dust collector 4 for dust removal under the action of a crude gas fan 3, the furnace gas after dust removal is sent to a user 6 under the action of a clean gas fan 5, when the user 6 can not receive the furnace gas, an operator controls a gas supply valve 15 to be closed through a controller 9, a diffusion valve 17 and an ignition device 18 to be opened, and the furnace gas is discharged from a diffusion chimney 7 and is combusted and then discharged into the atmosphere.
The temperature sensor 12 detects the temperature value of the furnace gas entering the bag-type dust collector 4 at any moment and transmits a signal to the controller 9; when the detected temperature value is lower than 230 ℃, the controller 9 controls the regulating valve 28 to close, so that tar is prevented from being liquefied and adhered to the cloth bag, the equipment wall and the pipeline wall to cause blockage; when the detected temperature value is higher than 280 ℃, the controller 9 controls the regulating valve 28 to be adjusted to the maximum value for cooling, and after a certain time delay, the temperature is still higher than 280 ℃, the controller 9 controls the electrode of the calcium carbide furnace 1 to be powered off and the coarse air fan 3 to be stopped, so that the combustion of the bag-type dust collector 4 caused by overhigh temperature of furnace gas is avoided; the dust removal safety and high efficiency are ensured, the service life of the whole system can be greatly prolonged, and the maintenance period is shortened.
The pressure sensor 10 detects the pressure value in the calcium carbide furnace 1 at any moment and transmits a signal to the controller 9; when the detected pressure value is lower than-10 Pa, the controller 9 controls the electric valve 11 and the crude gas fan 3 to be adjusted to be small, so that the dangers that air enters the calcium carbide furnace 1 due to too low pressure, the calcium carbide furnace 1 explodes and the like are prevented; when the detected pressure value is higher than 10Pa, the controller 9 controls the electric valve 11 and the coarse air fan 3 to be enlarged, so that the furnace gas is prevented from overflowing and scattering from the furnace cover of the calcium carbide furnace 1, the environment dust on the construction site is larger, the environment is polluted, and even the high-temperature dust damages other equipment and workers on the site.
The hydrogen concentration detection sensor 13 and the oxygen concentration detection sensor 14 detect the concentrations of hydrogen and oxygen in the processed furnace gas at any time; and transmits the signal to the controller 9; when the hydrogen concentration and the oxygen concentration are higher than the set values, the controller 9 controls the electrodes of the calcium carbide furnace 1 to be powered off, and the coarse air fan 3 and the clean air fan 5 are stopped, so that the system is prevented from being exploded and the like.
The controller 9 regularly controls the back-flushing valve 16 to open, the air purifying fan 5 sends the processed furnace gas into the back-flushing port of the bag-type dust collector 4, and the bag-type dust collector 4 is back-flushed to clean the bag-type dust collector 4.
The field worker constantly observes the material levels in the settler 2 and the bag-type dust collector 4, and when the material levels reach a limit position, the operator is informed to operate the controller 9 to control the corresponding ash discharge valve 20 and the vibrator 21 to be opened, and the dust in the settler 2 and the bag-type dust collector 4 falls into the ash bin 8 from the pipeline by the self gravity; the utility model discloses simple structure easily realizes, and has realized automatic control function.
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 (7)
1. A calcium carbide furnace gas purification system is characterized by comprising a calcium carbide furnace, a plurality of settlers, a coarse gas fan, a bag-type dust remover, a clean gas fan, a user, a diffusing chimney, an ash bin and a controller; a pressure sensor is arranged on the calcium carbide furnace, and an air outlet of the calcium carbide furnace is communicated with an air inlet of the first settler through a pipeline; an electric valve is arranged on a pipeline between the calcium carbide furnace and the first settler; an air outlet at the upper end of each settler is connected with an air inlet of the next adjacent settler through a pipeline, and an air outlet of the last settler is communicated with an air inlet of the crude gas fan through a pipeline; a temperature sensor is arranged on a pipeline between the last settler and the crude gas fan; the gas outlet of the crude gas fan is communicated with the gas inlet of the bag-type dust collector through a pipeline; the air outlet of the bag-type dust collector is communicated with the air inlet of the air purifying fan through a pipeline; the air outlet of the air purifying fan is respectively communicated with the air inlet of the user and the air inlet of the diffusing chimney through pipelines; a hydrogen concentration detection sensor, an oxygen concentration detection sensor and an air supply valve are arranged on a pipeline between the air purifying fan and the user; a bleeding valve is arranged between the air purifying fan and the bleeding chimney; the bag-type dust collector and the ash discharge port of each settler are communicated with the feed inlet of the ash bin through pipelines; an ash discharge valve is arranged on a pipeline between the bag-type dust collector and the ash bin; an ash discharge valve is also arranged on a pipeline between the settler and the ash bin; the signal output ends of the pressure sensor, the temperature sensor, the hydrogen concentration detection sensor and the oxygen concentration detection sensor are connected with the signal input end of the controller through signals; and the signal output end of the controller is respectively connected with the signal input ends of the electrode of the calcium carbide furnace, the electric valve, the coarse gas fan, the clean gas fan, the gas supply valve, the blow-off valve and the ash discharge valve through signals.
2. The purification system for furnace gas of calcium carbide furnace as claimed in claim 1, wherein a first gas feed pipe inclined upwards is arranged at the gas outlet of the calcium carbide furnace; one end of the first air supply pipe is communicated with an air outlet of the calcium carbide furnace; the other end of the first air supply pipe is connected with a second air supply pipe through an elbow; the first air supply pipe, the elbow and the second air supply pipe are connected to form a herringbone shape; a third air supply pipe is obliquely arranged on an air inlet of the first settler, and the electric valve is arranged on the third air supply pipe; the third air supply pipe is connected with the second air supply pipe through a corrugated pipe; the outer walls of the first air supply pipe, the elbow and the second air supply pipe are coated with a water-cooling jacket, a water inlet of the water-cooling jacket is communicated with a water outlet of a circulating cooling water system through a pipeline, and an adjusting valve is arranged on the pipeline between the water-cooling jacket and the circulating cooling water system; the water outlet of the water-cooling jacket is communicated with the water inlet of the circulating cooling water system through a pipeline; and the signal input end of the regulating valve is in signal connection with the signal output end of the controller.
3. The purification system for calcium carbide furnace gas as claimed in claim 2, wherein the pipe diameters of the first air feed pipe, the second air feed pipe and the third air feed pipe are 650 mm.
4. The purification system for calcium carbide furnace gas as claimed in claim 2, wherein vibrators are respectively arranged at the bottom of the bag-type dust remover and the bottom of each settler; and the signal input end of the vibrator is connected with the signal output end of the controller through a signal.
5. The purification system for furnace gas of calcium carbide furnace as claimed in claim 4, wherein a corrugated pipe is arranged on the ash outlet and the gas outlet of each settler in a communication manner; the dust outlet of the bag-type dust collector is provided with a corrugated pipe.
6. The purification system for furnace gas of calcium carbide furnace as claimed in claim 1, wherein an ignition device is arranged on the top of the diffusing chimney; and the signal input end of the ignition device is connected with the signal output end of the controller through a signal.
7. The purification system for furnace gas of calcium carbide furnace according to claim 1, wherein the gas outlet of the gas cleaning fan is communicated with the back flushing port of the bag-type dust remover through a pipeline, and a back flushing valve is arranged on the pipeline between the gas cleaning fan and the bag-type dust remover; and the signal input end of the back flushing valve is in signal connection with the signal output end of the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922114899.0U CN211060680U (en) | 2019-11-29 | 2019-11-29 | Purification system of calcium carbide furnace gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922114899.0U CN211060680U (en) | 2019-11-29 | 2019-11-29 | Purification system of calcium carbide furnace gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211060680U true CN211060680U (en) | 2020-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922114899.0U Expired - Fee Related CN211060680U (en) | 2019-11-29 | 2019-11-29 | Purification system of calcium carbide furnace gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211060680U (en) |
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2019
- 2019-11-29 CN CN201922114899.0U patent/CN211060680U/en not_active Expired - Fee Related
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