CN217568047U - Calcium carbide furnace purification negative pressure slag suction and recovery mechanism - Google Patents
Calcium carbide furnace purification negative pressure slag suction and recovery mechanism Download PDFInfo
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- CN217568047U CN217568047U CN202221605415.8U CN202221605415U CN217568047U CN 217568047 U CN217568047 U CN 217568047U CN 202221605415 U CN202221605415 U CN 202221605415U CN 217568047 U CN217568047 U CN 217568047U
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Abstract
The utility model relates to a calcium carbide furnace burner gas purifies technical field, concretely relates to calcium carbide furnace purifies negative pressure and inhales sediment recovery mechanism. The top in sediment storehouse is equipped with cyclone, cyclone's air outlet is connected with the sack cleaner, the both ends of sack cleaner still are equipped with the blowback pipeline, the blowback pipeline certainly dust removal air intake one end begins to dust removal air outlet is up, is equipped with blowback discharge valve, nitrogen gas recovery subassembly, blowback admission valve in proper order, the nitrogen gas is retrieved the subassembly and is included nitrogen generator group and nitrogen gas storage tank. The rear end of an air outlet of the cyclone dust collector is provided with a plurality of bag-type dust collectors in parallel, and the bag-type dust collectors share one set of the nitrogen recovery component. The improved negative pressure slag suction and recovery mechanism utilizes the nitrogen recovery assembly to perform back blowing on the bag-type dust collector, can eliminate sparks entering the bag-type dust collector in time, realizes recycling of nitrogen, and is low in equipment operation cost and strong in stability.
Description
Technical Field
The utility model relates to a calcium carbide furnace burner gas purifies technical field, concretely relates to calcium carbide furnace purifies negative pressure and inhales sediment recovery mechanism.
Background
In order to protect the environment, the tail gas of the calcium carbide furnace is generally required to be dedusted and recycled. After the tail gas of the calcium carbide furnace is subjected to multi-stage cooling and dedusting, the collected solid dust is conveyed to a dust discharging tank through a chain type scraper conveyor. The solid dust is generally called as purified ash, has a dark black appearance, has a temperature of about 200 ℃, contains 80% of components with particle sizes of less than 10 mu m, tar and high content of volatile components, and also contains a small amount of acetylene powder, sulfur and phosphorus, so the solid dust is inflammable after contacting air and has certain potential safety hazard. At present, the main treatment mode is landfill, vehicles are often burnt out during truck transportation, and dust is easy to float when the vehicles are dumped, so that air is seriously polluted. In addition, the ash content of the fly ash contains more calcium oxide and magnesium oxide, and the environment and underground water are easy to cause serious pollution by random stacking or landfill.
At present, the purification ash is treated by adopting an incineration mode, an existing fluidized bed furnace is used as an incineration chamber, the incineration furnace is used for carrying out fluidized incineration on the purification ash, and the incinerated waste residue is discharged from a bottom slag discharge port of the fluidized bed furnace and is sent to a residue bin for storage through a waste residue suction and delivery pipeline communicated with the bottom slag discharge port. In the prior art, the bag-type dust remover is used for treating the dust in the slag bin, and because the slag bin may contain sparks, the bag is easy to burn after the sparks enter the bag-type dust remover, so that the bag-type dust remover cannot be normally used.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model provides a carbide stove purifies negative pressure and inhales sediment recovery mechanism, negative pressure after the improvement inhales sediment recovery mechanism utilizes nitrogen gas recovery subassembly to carry out the blowback to the sack cleaner, can in time eliminate the mars that gets into in the sack cleaner, realizes the recycle of nitrogen gas simultaneously, and equipment running cost is low, stability is strong.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a calcium carbide furnace purification negative pressure slag suction recovery mechanism comprises a bag-type dust collector and a negative pressure suction device, wherein the bag-type dust collector is positioned at the front end of the negative pressure suction device. The top in sediment storehouse is equipped with cyclone, cyclone's ash discharge mouth with the feed inlet in sediment storehouse intercommunication, cyclone's air intake passes through material conveyer pipe and burns burning furnace's bin outlet intercommunication, cyclone's air outlet is connected with the sack cleaner, the dust removal air intake of sack cleaner with be equipped with the dust removal air inlet valve between cyclone, the dust removal air outlet of sack cleaner pass through the dust removal air outlet valve with the material device intercommunication is inhaled to the negative pressure. The two ends of the bag-type dust collector are also provided with a back-blowing pipeline, one end of the back-blowing pipeline is connected with a pipeline between the dust-removing air inlet valve and the dust-removing air inlet, and the other end of the back-blowing pipeline is connected with a pipeline between the dust-removing air outlet valve and the dust-removing air outlet. The back flushing pipeline is sequentially provided with a back flushing exhaust valve, a nitrogen recovery component and a back flushing air inlet valve from one end of the dust removal air inlet to the dust removal air outlet, and the nitrogen recovery component comprises a nitrogen making unit and a nitrogen storage tank.
Furthermore, a plurality of bag-type dust collectors are arranged at the rear ends of the air outlets of the cyclone dust collectors in parallel, the bag-type dust collectors are respectively provided with an independent dust-removing air inlet valve, a dust-removing air outlet valve, a back-blowing air inlet valve and a back-blowing exhaust valve, and the bag-type dust collectors share one set of the nitrogen recovery assembly.
Furthermore, the nitrogen recovery assembly further comprises a recovery filter, an air filter is arranged in the recovery filter, and the recovery filter is located between the back-flushing exhaust valve and the nitrogen making unit.
Further, a discharge valve is arranged at the bottom of the slag bin, and a discharge valve is arranged at the bottom of the bag-type dust collector.
Further, the negative pressure suction device is a Roots blower.
Furthermore, a dust removal filter bag is arranged between a dust removal air inlet and a dust removal air outlet of the bag-type dust remover, the dust removal air inlet is located below the dust removal filter bag, and the dust removal air outlet is located above the dust removal filter bag.
Compared with the prior art, the beneficial effects of the utility model are that:
larger particles are settled in the cyclone dust collector and fall into the slag bin, and the cyclone dust collector can also intercept and treat a part of sparks, so that the probability that the bag-type dust collector is burnt out by the sparks is reduced.
And the high-pressure nitrogen in the nitrogen storage tank is utilized to perform back-blowing dust removal on the bag-type dust remover, and meanwhile, the nitrogen is continuously introduced into the bag-type dust remover, so that sparks in the bag-type dust remover can be effectively eliminated.
The nitrogen recovery assembly improves the utilization rate of nitrogen, reduces the waste of nitrogen and reduces the cost of using nitrogen in the system.
The rear end of the air outlet of the cyclone dust collector is connected with a plurality of bag-type dust collectors in parallel, when one bag-type dust collector needs to clean dust, other bag-type dust collectors can be used for collecting dust continuously, and continuous operation of the system is guaranteed.
Drawings
Fig. 1 is a process schematic diagram of the calcium carbide furnace purification negative pressure slag suction recovery mechanism of the utility model.
Fig. 2 is a schematic view of the sectional structure of the middle bag-type dust collector of the present invention.
In the figure: 1. the device comprises a slag bin, 2 parts of a bag-type dust remover, 2.1 parts of a dust removing air inlet, 2.2 parts of a dust removing air outlet, 3 parts of a recovery filter, 4 parts of a nitrogen making unit, 5 parts of a nitrogen storage tank, 6 parts of an incinerator, 7 parts of a cyclone dust remover, 8 parts of a negative pressure material suction device, 9 parts of a dust removing air inlet valve, 10 parts of a dust removing air outlet valve, 11 parts of a back-blowing air inlet valve, 12 parts of a back-blowing exhaust valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, a calcium carbide furnace purification negative pressure slag suction recovery mechanism comprises a bag-type dust collector 2 and a negative pressure suction device 8, wherein the bag-type dust collector 2 is positioned at the front end of the negative pressure suction device 8. The top in sediment storehouse 1 is equipped with cyclone 7, cyclone 7's row ash mouth with the feed inlet intercommunication in sediment storehouse 1, cyclone 7's air intake passes through material conveyer pipe and burns burning furnace 6's bin outlet intercommunication, cyclone 7's air outlet is connected with sack cleaner 2, sack cleaner 2's dust removal air intake 2.1 with be equipped with dust removal air inlet valve 9 between the cyclone 7, sack cleaner 2's dust removal air outlet 2.2 through dust removal blast gate 10 with material device 8 intercommunication is inhaled to the negative pressure. And back-blowing pipelines are further arranged at two ends of the bag-type dust collector 2, one end of each back-blowing pipeline is connected with a pipeline between the dust-removing air inlet valve 9 and the dust-removing air inlet 2.1, and the other end of each back-blowing pipeline is connected with a pipeline between the dust-removing air outlet valve 10 and the dust-removing air outlet 2.2. The blowback pipeline starts from dust removal air intake 2.1 one end to dust removal air outlet 2.2 is equipped with blowback discharge valve 12, nitrogen gas recovery subassembly, blowback admission valve 11 in proper order, the nitrogen gas is retrieved the subassembly and is included nitrogen making unit 4 and nitrogen gas storage tank 5. The dust removal air inlet valve 9 and the dust removal air outlet valve 10 are opened, the back-blowing air inlet valve 11 and the back-blowing exhaust valve 12 are closed, waste residues generated after purified ash is incinerated in the incinerator 6 are conveyed to the cyclone dust collector 7 through a material conveying pipe under the action of the negative pressure material suction device 8, larger particles are settled in the cyclone dust collector 7 and fall into the slag bin 1, and the cyclone dust collector 7 can also intercept and treat a part of sparks. And smaller particles enter the bag-type dust collector 2 under the action of the negative pressure material suction device 8, and clean gas purified by the bag-type dust collector 2 is discharged into the atmosphere or other subsequent processing equipment through the negative pressure material suction device 8. When needs are right during the sack cleaner 2 carries out the deashing, dust removal air inlet valve 9 and dust removal air outlet valve 10 are closed, blowback admission valve 11, blowback discharge valve 12 are opened, utilize high-pressure nitrogen gas in the nitrogen gas storage tank 5 carries out the blowback deashing to sack cleaner 2, simultaneously last to let in nitrogen gas in sack cleaner 2, can effectively eliminate the mars in the sack cleaner 2. The nitrogen is returned to the nitrogen making unit 4 from the back-blowing exhaust valve 12, and the nitrogen making unit 4 further purifies and pressurizes the nitrogen and sends the nitrogen to the nitrogen storage tank 5 for storage. The nitrogen recovery assembly improves the utilization rate of nitrogen, reduces the waste of nitrogen and reduces the cost of using nitrogen in the system.
In practical use, the rear end of the air outlet of the cyclone dust collector 7 is provided with a plurality of bag-type dust collectors 2 in parallel, the bag-type dust collectors 2 are respectively provided with an independent dust-removing air inlet valve 9, a dust-removing air outlet valve 10, a back-blowing air inlet valve 11 and a back-blowing exhaust valve 12, and the bag-type dust collectors 2 share one set of the nitrogen recovery assembly. The rear end of the air outlet of the cyclone dust collector 7 is provided with a plurality of bag-type dust collectors 2 in parallel, when one bag-type dust collector 2 needs to clean dust, other bag-type dust collectors 2 can be used for collecting dust continuously, and the continuous operation of the system is ensured.
In practical use, the nitrogen recovery assembly further comprises a recovery filter 3, an air filter is arranged in the recovery filter 3, and the recovery filter 3 is located between the blowback exhaust valve 12 and the nitrogen making unit 4. The recovery filter 3 can filter dust in corresponding pipelines so as to reduce the dust content at the air inlet of the nitrogen making unit 4.
In practical use, a discharge valve is arranged at the bottom of the slag bin 1, and a discharge valve is arranged at the bottom of the bag-type dust collector 2.
In practical use, the negative pressure material suction device 8 is a roots blower.
As shown in fig. 2, in actual use, a dust removing filter bag 2.3 is disposed between a dust removing air inlet 2.1 and a dust removing air outlet 2.2 of the bag-type dust remover 2, the dust removing air inlet 2.1 is located below the dust removing filter bag 2.3, the dust removing air outlet 2.2 is located above the dust removing filter bag 2.3, and the bag-type dust remover 2 adopts a structural form of downward air inlet and upward air outlet.
The foregoing illustrates and describes the general principles, features and advantages of the present invention. The directional indicators such as front, back, left, right, end, front, etc. are only used for describing the structure, but not limited. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a carbide stove purifies negative pressure and inhales sediment recovery mechanism, inhales material device (8) including sack cleaner (2), negative pressure, sack cleaner (2) are located the front end that material device (8) were inhaled to the negative pressure, its characterized in that: a cyclone dust collector (7) is arranged at the top of the slag bin (1), an ash discharge port of the cyclone dust collector (7) is communicated with a feed inlet of the slag bin (1), an air inlet of the cyclone dust collector (7) is communicated with a discharge port of the incinerator (6) through a material conveying pipe, an air outlet of the cyclone dust collector (7) is connected with a bag-type dust collector (2), a dust collection air inlet valve (9) is arranged between a dust collection air inlet (2.1) of the bag-type dust collector (2) and the cyclone dust collector (7), and a dust collection air outlet (2.2) of the bag-type dust collector (2) is communicated with the negative pressure suction device (8) through a dust collection air outlet valve (10); the two ends of the bag-type dust collector (2) are also provided with back flushing pipelines, one end of each back flushing pipeline is connected with the pipeline between the dust removal air inlet valve (9) and the dust removal air inlet (2.1), and the other end of each back flushing pipeline is connected with the pipeline between the dust removal air outlet valve (10) and the dust removal air outlet (2.2); the blowback pipeline from dust removal air intake (2.1) one end begins to dust removal air outlet (2.2) are equipped with blowback discharge valve (12), nitrogen gas recovery subassembly, blowback admission valve (11) in proper order, the nitrogen gas is retrieved the subassembly and is included nitrogen generator group (4) and nitrogen gas storage tank (5).
2. The calcium carbide furnace purification negative pressure slag suction and recovery mechanism of claim 1, wherein: the air outlet rear end of cyclone (7) connects in parallel and is provided with a plurality of sack cleaner (2), a plurality of sack cleaner (2) are equipped with independent dust removal air inlet valve (9), dust removal blast gate (10), blowback admission valve (11), blowback discharge valve (12) separately, a plurality of sack cleaner (2) sharing one set nitrogen gas recovery subassembly.
3. The negative pressure slag suction and recovery mechanism for calcium carbide furnace purification as set forth in claim 1, wherein: the nitrogen recovery assembly further comprises a recovery filter (3), an air filter is arranged in the recovery filter (3), and the recovery filter (3) is located between the back-blowing exhaust valve (12) and the nitrogen making unit (4).
4. The calcium carbide furnace purification negative pressure slag suction and recovery mechanism of claim 1, wherein: the bottom of the slag bin (1) is provided with a discharge valve, and the bottom of the bag-type dust collector (2) is provided with a discharge valve.
5. The calcium carbide furnace purification negative pressure slag suction and recovery mechanism of claim 1, wherein: the negative pressure material suction device (8) is a Roots blower.
6. The calcium carbide furnace purification negative pressure slag suction and recovery mechanism of claim 1, wherein: be equipped with dust removal filter bag (2.3) between dust removal air intake (2.1), the dust removal air outlet (2.2) of sack cleaner (2), dust removal air intake (2.1) is located the below of dust removal filter bag (2.3), dust removal air outlet (2.2) is located the top of dust removal filter bag (2.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221605415.8U CN217568047U (en) | 2022-06-25 | 2022-06-25 | Calcium carbide furnace purification negative pressure slag suction and recovery mechanism |
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| CN202221605415.8U CN217568047U (en) | 2022-06-25 | 2022-06-25 | Calcium carbide furnace purification negative pressure slag suction and recovery mechanism |
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| CN217568047U true CN217568047U (en) | 2022-10-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118179159A (en) * | 2024-05-16 | 2024-06-14 | 四川鸿图实业有限公司 | Back-suction ash-cleaning dust remover |
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2022
- 2022-06-25 CN CN202221605415.8U patent/CN217568047U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118179159A (en) * | 2024-05-16 | 2024-06-14 | 四川鸿图实业有限公司 | Back-suction ash-cleaning dust remover |
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