CN202208727U - Gas recovering device used during uniform pressure diffusing of blast furnace top - Google Patents
Gas recovering device used during uniform pressure diffusing of blast furnace top Download PDFInfo
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- CN202208727U CN202208727U CN2011202571184U CN201120257118U CN202208727U CN 202208727 U CN202208727 U CN 202208727U CN 2011202571184 U CN2011202571184 U CN 2011202571184U CN 201120257118 U CN201120257118 U CN 201120257118U CN 202208727 U CN202208727 U CN 202208727U
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- sack cleaner
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Abstract
The utility model relates to a gas recovering device used during uniform pressure diffusing of a blast furnace top, and belongs to the technical field of iron and steel industry. The gas recovering device is characterized in that an ejector is connected in series behind a bag-type dust remover, wherein crude gas diffused in an uniform pressure manner from a weighting material tank of a blast furnace enters a cyclone dust remover via an uniform pressure diffusing pipeline for primary dust removal, then enters the bag-type dust remover connected in series behind the cyclone dust remover to produce clean gas; and the clean gas is quickly ejected into a clean gas pipe network by the ejector, and the gas diffused in an uniform pressure manner from the weighting material tank is quickly diffused and recovered. The gas recovering device provided by the utility model has the advantage that the technology is simple, the operation is convenient, the operation cost and the maintenance cost are low, the favorable social benefits are realized by reducing the gas and dust emission besides of the economic benefits obtained by recovering the gas, the modification to the conventional technology is less, and the present blast furnace uniform pressure gas diffusing system is convenient to improve.
Description
Technical field
The utility model belongs to the Iron And Steel Industry technical field, relates to a kind of blast furnace furnace roof pressure-equalizing and discharging gas recovering device.
Background technology
Environmental requirement that steel industry is increasingly serious and Market Situation require iron and steel enterprise must accomplish energy-saving and emission-reduction, reduce cost.At present, blast furnace ironmaking operation discharge amount of pollution occupies the major part of whole steel industry quantity discharged, therefore, reduces ironmaking operation quantity discharged and seems particularly necessary.
Current; Pressure-equalizing and discharging during traditional charging of blast furnace is to utilize half purified gas, nitrogen all to be depressed into the consistent discharge in blast furnace of realizing with blast furnace top pressure to batch can; When diffusing; Raw gas in the batch can directly enters in the atmosphere after the thick dedusting of tornado dust collector, so that batch can diffuses to normal pressure, satisfies the batch can material feeding.Though the part dust that reclaims through tornado dust collector can be blown in the pressurising process in the weighing batch can once more, still can enter amounts of dust every year and get in the atmosphere.What is more important, a large amount of poisonous coal gas has also entered in the air, has not only polluted environment, and is a kind of huge economic waste.By the ton iron amount of diffusing 7～9Nm
3Calculate, at present, China's year coal gas diffusion amount reaches about 50 billion cubic meters, and (the blast furnace gas unit price is by 0.11 yuan/Nm up to 5.5 hundred million yuans for financial loss
3Calculate).
Present known new pressure-equalizing and discharging coal-gas recovering technology, or cost recovery is too high, or can not in industry, realize good coal-gas recovering, the two is taken into account can't to realize economic benefit and environmental benefit simultaneously.Application number is 201010209016.5; Name is called " shaft furnace charging pressure-equalizing and discharging coal-gas recovering process and device thereof " and discloses a kind of technology that emission coal gas is recovered into the purified gas pipe network; Though running cost is cheap, simple to operate, mainly rely on top pressure to do power purified gas is sent into gaspipe network; In actual the use, what be difficult to realize pressure-equalizing and discharging coal gas diffuses the efficient recovery with purified gas fully.
The utility model content
The technical problem that the utility model will solve is the deficiency to current traditional technology and various new improvement technologies; Provide a kind of easy to operate; The blast furnace furnace roof pressure-equalizing and discharging process gas recovering device that operation and maintenance cost is cheap; Coal gas and dust that efficient recovery produces reach the energy-saving and emission-reduction and the environmental protection purpose of blast furnace furnace roof pressure-equalizing and discharging system.
The utility model solves the technical scheme that its technical problem adopted:
Blast furnace furnace roof pressure-equalizing and discharging process gas recovering device is characterized in that behind sack cleaner, connecting and can pressure-equalizing and discharging coal gas injection be gone into the injector in the purified gas pipe network.
Described injector entrance comprises two inlets; Be respectively instrumentation tubes and injecting tube; Instrumentation tubes is connected with furnace roof clean coal tracheae to feed through the dust separating blast furnace furnace roof of top gas sack cleaner system purification purified gas through pipeline and high top pressure gas stop valve, and injecting tube is connected with sack cleaner with the purified gas behind the access bag-type dust through pipeline and injector trip valve; Because the weighing batch can emission coal gas pressure behind the bag-type dust is lower than the highly compressed blast furnace furnace roof purified gas pressure through purifying and dedusting; Weighing batch can emission coal gas behind bag-type dust gets into the injector from injecting tube; Sprayed into the highly compressed blast furnace furnace roof purified gas injection the injector from instrumentation tubes, and got into fast in the purified gas pipe network through injector through purifying and dedusting.
Described sack cleaner is parallelly connected with top gas sack cleaner system.
Described blast furnace furnace roof purified gas does not pass through TRT top pressure power generation unit or reducing valve group, still is in high pressure conditions.
The coal gas that will diffuse out in the time of coal gas diffusion is introduced in the purified gas pipe network.
The sack cleaner import is provided with the cloth bag trip valve, and sack cleaner is connected with tornado dust collector with pipeline through the cloth bag trip valve; Three outlets of sack cleaner are provided with purified gas respectively and diffuse valve, soot cleaning valve, injector trip valve; Purified gas diffuses valve and is used under sack cleaner maintenance or replacing cloth bag situation, diffusing the purified gas in the sack cleaner; Soot cleaning valve is used to clear up sack cleaner and captures the dust that gets off; Tornado dust collector outlets is provided with cyclone dust removal and diffuses valve, and cyclone dust removal is diffused valve and is used for breaking down or changing under the situation such as cloth bag and maintenance at sack cleaner, directly opens cyclone dust removal and diffuses valve, diffuses the pressure-equalizing and discharging coal gas in the weighing batch can; Half purified gas equalizer valve and nitrogen equalizer valve also are set on the tornado dust collector inlet line; Be used for the weighing batch can is all pressed.
The injector volume can and diffuse speed selection according to weighing batch can coal gas diffusion amount.In order to realize the diffusing of pressure-equalizing and discharging coal gas in the weighing batch can faster; After coal gas diffusion finishes, close the cloth bag trip valve, keep injector trip valve, high top pressure gas stop valve and trip valve to open for some time simultaneously; Make injector continue the coal gas in the injection sack cleaner; And make in the sack cleaner negative pressure that forms to a certain degree, when being beneficial to next weighing batch can pressure-equalizing and discharging coal gas diffusion, can carry out with the speed of diffusing faster.Adopt this mode, keeping under the constant situation of weighing batch can coal gas diffusion speed, can select less volumetrical injector to reduce the fixed investment cost.
The pressure-equalizing and discharging of said apparatus reclaims detailed process:
When all pressing, open pressure-equalizing and discharging valve and half purified gas equalizer valve, half purified gas is once all pressed the weighing batch can through the pressure-equalizing and discharging pipeline; Can not meet the demands if once all press, open the nitrogen equalizer valve again, with high pressure nitrogen the weighing batch can carried out secondary and all press, reach suitable pressure requirement; All press to finish, open the blanking lock, furnace charge gets into the blast furnace through the blanking lock from the weighing batch can;
When diffusing, open pressure-equalizing and discharging trip valve and cloth bag trip valve, the raw gas that diffuses from the weighing batch can gets into tornado dust collector through the pressure-equalizing and discharging pipeline, and half purified gas after the tornado dust collector dedusting gets in the sack cleaner, and is formed purified gas by smart dedusting; And when diffusing; Open injector trip valve, high top pressure gas stop valve and trip valve; Under the injector effect, the quick injection of the highly compressed blast furnace furnace roof purified gas through purifying and dedusting that the pressure-equalizing and discharging coal gas after the sack cleaner dedusting is sprayed into from instrumentation tubes the injector gets into the purified gas pipe network;
When pressure-equalizing and discharging coal gas diffusion to the normal pressure in the weighing batch can, close the pressure-equalizing and discharging trip valve, realize the purpose of the coal gas diffusion recovery of weighing batch can.
The beneficial effect of the utility model is: solved raw gas in the traditional technology to empty emission problem; Raw gas is purified the back reclaim entering purified gas pipe network; When having solved problem of environmental pollution, also can the coal-gas recovering utilization be had great economic benefit and social benefit.In addition, the utility model fixed investment and operation expense are cheap, and schedule of operation and original technology basically identical are easy to learn, safe and reliable.
Description of drawings
Fig. 1 is the blast furnace furnace roof pressure-equalizing and discharging process gas recovering device structural representation of the utility model;
Wherein: 1---blast-furnace body; 2---the blanking lock; 3---the weighing batch can; 4---the pressure-equalizing and discharging pipeline; 5---the pressure-equalizing and discharging trip valve; 6---tornado dust collector; 7---valve is diffused in cyclone dust removal; 8---half purified gas equalizer valve; 9---the nitrogen equalizer valve; 10---the cloth bag trip valve; 11---purified gas diffuses valve; 12---soot cleaning valve; 13---sack cleaner; 14---the injector trip valve; 15---the high top pressure gas stop valve; 16---injector; 17---trip valve; 18---the purified gas pipe network.
Embodiment
For understanding the utility model better, the utility model is done further to describe below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1; Blast furnace furnace roof pressure-equalizing and discharging process gas recovering device; Blast-furnace body 1 is connected with weighing batch can 3 through baiting valve 2;, after pressure-equalizing and discharging pipeline 4 gets into tornado dust collector 6 rough dustings, get into the placed in-line sack cleaners 13 in tornado dust collector 6 backs and carry out smart dedusting and form purified gas from the raw gas of weighing batch can 3 pressure-equalizing and dischargings.This bag-type dust apparatus 13 is parallelly connected with top gas sack cleaner system.
The back of sack cleaner 13 has connected an injector 16, makes purified gas after sack cleaner 13 smart dedustings under the effect of injector 16, gets into purified gas pipe network 18 fast, realizes diffusing and recycling of weighing batch can coal gas.All pressures of weighing batch can 3 are then consistent with traditional technology.What for dissimilar blast furnaces, only need weighing batch can 3 emission coal gas to select the sack cleaner 13 of appropriate volume to get final product according to injector 16.
Described injector 16 entrances are made up of instrumentation tubes and injecting tube two portions; Instrumentation tubes is connected with furnace roof clean coal tracheae to feed through the dust separating blast furnace furnace roof of top gas sack cleaner system purification purified gas through pipeline and high top pressure gas stop valve 15; Injecting tube is connected with sack cleaner 13 with the purified gas behind the access bag-type dust through pipeline and injector trip valve 14.The injector outlet section then is connected with purified gas pipe network 18 with trip valve 17 through pipeline.
Because the weighing batch can emission coal gas pressure behind the bag-type dust is lower than the highly compressed blast furnace furnace roof purified gas pressure through purifying and dedusting; Weighing batch can emission coal gas behind bag-type dust gets into the injector 16 from injecting tube; Sprayed into the highly compressed blast furnace furnace roof purified gas injection the injector 16 from instrumentation tubes, and got in the purified gas pipe network 18 fast through injector 16 through purifying and dedusting.
Described blast furnace furnace roof purified gas does not pass through TRT top pressure power generation unit or reducing valve group, still is in high pressure conditions.
As shown in Figure 1, when all pressing, open pressure-equalizing and discharging valve 5 and half purified gas equalizer valve, 8, half purified gas are once all pressed through 4 pairs of weighing batch cans 3 of pressure-equalizing and discharging pipeline.Can not meet the demands if once all press, open nitrogen equalizer valve 9 again, with high pressure nitrogen weighing batch can 3 carried out secondary and all press, reach suitable pressure requirement.All press to finish, open blanking lock 2, furnace charge gets into the blast furnace 1 through blanking lock 2 from weighing batch can 3.
When diffusing, open pressure-equalizing and discharging trip valve 5 and cloth bag trip valve 10, the raw gas that diffuses from weighing batch can 3 gets into tornado dust collector 6 through pressure-equalizing and discharging pipeline 4.Half purified gas after tornado dust collector 6 dedustings gets in the sack cleaner 13, and is formed purified gas by smart dedusting.
When diffusing; Open injector trip valve 14, high top pressure gas stop valve 15 and trip valve 17; Under injector 16 effects, the highly compressed blast furnace furnace roof purified gas injection through purifying and dedusting that the pressure-equalizing and discharging coal gas after sack cleaner 6 dedustings is sprayed into from instrumentation tubes the injector gets into purified gas pipe network 18.When pressure-equalizing and discharging coal gas diffusion to the normal pressure in the weighing batch can 3, close pressure-equalizing and discharging trip valve 5, realize the purpose of the coal gas diffusion recovery of weighing batch can 3.
Cyclone dust removal is diffused valve 7 and is used for breaking down or changing under the situation such as cloth bag and maintenance at sack cleaner 13, directly opens cyclone dust removal and diffuses valve 7, diffuses the pressure-equalizing and discharging coal gas in the weighing batch can 3.
Purified gas diffuses valve 11 and is used under sack cleaner 13 maintenances or replacing cloth bag situation, diffusing the purified gas in the sack cleaner 13.
Soot cleaning valve 12 is used to clear up the dust that sack cleaner 13 captures.
The injector volume can and diffuse speed selection according to weighing batch can coal gas diffusion amount.In order to realize the diffusing of pressure-equalizing and discharging coal gas in the weighing batch can 3 faster; Can after coal gas diffusion finishes, close cloth bag trip valve 10, keep injector trip valve 14, high top pressure gas stop valve 15 and trip valve 17 to open for some time simultaneously; The coal gas that injector 16 is continued in the injection sack cleaner 13; And make in the sack cleaner 13 negative pressure that forms to a certain degree, when being beneficial to next weighing batch can 3 pressure-equalizing and discharging coal gas diffusions, can carry out with the speed of diffusing faster.So, also can select less injector, reduce the fixed investment cost keeping under the constant situation of weighing batch can 3 coal gas diffusion speed.
The above disclosed preferred embodiment that is merely the utility model, the equivalence of doing according to the utility model changes, and still belongs to the protection domain of the utility model.
Claims (7)
1. blast furnace furnace roof pressure-equalizing and discharging process gas recovering device is characterized in that behind sack cleaner, connecting and can pressure-equalizing and discharging coal gas injection be gone into the injector in the purified gas pipe network.
2. device according to claim 1; It is characterized in that described injector entrance comprises two inlets; Be respectively instrumentation tubes and injecting tube; Instrumentation tubes is connected with furnace roof clean coal tracheae to feed through the dust separating blast furnace furnace roof of top gas sack cleaner system purification purified gas through pipeline and high top pressure gas stop valve, and injecting tube is connected with sack cleaner with the purified gas behind the access bag-type dust through pipeline and injector trip valve; Weighing batch can emission coal gas behind bag-type dust gets into the injector from injecting tube, is sprayed into the highly compressed blast furnace furnace roof purified gas injection through purifying and dedusting the injector from instrumentation tubes, and gets into fast in the purified gas pipe network through injector.
3. device according to claim 1 and 2 is characterized in that described sack cleaner is parallelly connected with top gas sack cleaner system.
4. device according to claim 3 is characterized in that described blast furnace furnace roof purified gas does not pass through TRT top pressure power generation unit or reducing valve group, still is in high pressure conditions.
5. according to claim 1 or 2 or 4 described devices, the coal gas that will diffuse out when it is characterized in that coal gas diffusion is introduced in the purified gas pipe network.
6. device according to claim 5 is characterized in that the sack cleaner import is provided with the cloth bag trip valve, and sack cleaner is connected with tornado dust collector with pipeline through the cloth bag trip valve; Three outlets of sack cleaner are provided with purified gas respectively and diffuse valve, soot cleaning valve, injector trip valve; The tornado dust collector outlet is provided with cyclone dust removal and diffuses valve; Half purified gas equalizer valve and nitrogen equalizer valve also are set on the tornado dust collector inlet line.
7. according to claim 1 or 2 or 4 or 6 described devices, it is characterized in that the injector volume can and diffuse speed selection according to weighing batch can coal gas diffusion amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202571184U CN202208727U (en) | 2011-07-20 | 2011-07-20 | Gas recovering device used during uniform pressure diffusing of blast furnace top |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202571184U CN202208727U (en) | 2011-07-20 | 2011-07-20 | Gas recovering device used during uniform pressure diffusing of blast furnace top |
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| Publication Number | Publication Date |
|---|---|
| CN202208727U true CN202208727U (en) | 2012-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202571184U Expired - Fee Related CN202208727U (en) | 2011-07-20 | 2011-07-20 | Gas recovering device used during uniform pressure diffusing of blast furnace top |
Country Status (1)
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|---|---|
| CN (1) | CN202208727U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103060500A (en) * | 2013-02-01 | 2013-04-24 | 江苏沙钢集团有限公司 | Blast furnace top pressure equalizing and releasing process and device with pressure equalized goal gas recycling function |
| CN104263866A (en) * | 2014-09-28 | 2015-01-07 | 中冶华天南京工程技术有限公司 | System and process for purifying and utilizing equalized diffuse gas of blast furnace top charging bucket |
| CN110004258A (en) * | 2019-04-02 | 2019-07-12 | 北京首钢国际工程技术有限公司 | A kind of device recycling blast furnace top pressure-equalizing bleeding coal gas |
-
2011
- 2011-07-20 CN CN2011202571184U patent/CN202208727U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103060500A (en) * | 2013-02-01 | 2013-04-24 | 江苏沙钢集团有限公司 | Blast furnace top pressure equalizing and releasing process and device with pressure equalized goal gas recycling function |
| CN103060500B (en) * | 2013-02-01 | 2014-11-19 | 江苏沙钢集团有限公司 | Blast furnace top pressure equalizing and releasing process and device with pressure equalized goal gas recycling function |
| CN104263866A (en) * | 2014-09-28 | 2015-01-07 | 中冶华天南京工程技术有限公司 | System and process for purifying and utilizing equalized diffuse gas of blast furnace top charging bucket |
| CN110004258A (en) * | 2019-04-02 | 2019-07-12 | 北京首钢国际工程技术有限公司 | A kind of device recycling blast furnace top pressure-equalizing bleeding coal gas |
| CN110004258B (en) * | 2019-04-02 | 2024-02-09 | 北京首钢国际工程技术有限公司 | Device for recycling blast furnace top pressure equalizing and diffusing gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120502 Termination date: 20150720 |
|
| EXPY | Termination of patent right or utility model |