CN201280566Y - Large blast furnace crude gas full-dry method cloth bag dust-removing apparatus - Google Patents
Large blast furnace crude gas full-dry method cloth bag dust-removing apparatus Download PDFInfo
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- CN201280566Y CN201280566Y CNU2008201853143U CN200820185314U CN201280566Y CN 201280566 Y CN201280566 Y CN 201280566Y CN U2008201853143 U CNU2008201853143 U CN U2008201853143U CN 200820185314 U CN200820185314 U CN 200820185314U CN 201280566 Y CN201280566 Y CN 201280566Y
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Abstract
The utility model relates to a large blast furnace crude gas total dry method woven-pocket dust collection device without emanation or temperature reduction device, and mainly solves the technical problems that the prior dust collection device has a complex structure, and the low temperature phenomenon causes dust accumulation which leads to blocked dust conveying in a dust conveying pipeline. The device comprises a woven-pocket dust collection cylinder body group and a woven-pocket back flushing loop; the woven-pocket dust collection cylinder body group consists of 12-18 woven-pocket dust collection cylinder bodies in two rows; two paths of a semi-clean gas main led out of a gravitational precipitator are connected with each woven-pocket dust collection cylinder body through a woven-pocket dust collection semi-clean gas inlet valve; the woven-pocket dust collection cylinder bodies are divided into three groups which are connected with a three-way dust conveying pipeline through a dust discharging valve of the woven-pocket dust collection cylinder body; the three-way dust conveying pipeline is connected with a large ash bin; an air source control valve is arranged on the three-way dust conveying pipeline; the woven-pocket dust collection cylinder bodies in two rows are connected with a TRT generating system through 2 paths of a clean gas conveying pipe by a clean gas main; the three-way dust conveying pipeline is connected with the TRT generating system through a dust conveying air source pipeline; and the woven-pocket back flushing loop is connected with each woven-pocket dust collection cylinder body through 2 nitrogen branch pipelines used by back flushing. The utility model is mainly used for removing dust from blast furnace crude gas.
Description
Technical field:
The utility model relates to a kind of blast furnace raw gas cleaning apparatus, the absolutely dry method bag-type dust collector of the blast furnace raw gas that heat sink was diffused, do not had to particularly a kind of nothing.
Background technology:
In iron-making production, but the about 1600--2000m of pig iron output per ton
3Blast furnace gas, be important secondary energy.Because dustiness height in the blast furnace raw gas can not directly use, make dustiness drop to that 10mg/m3 is following could to be used, so must make purifying treatment to the blast furnace raw gas.
The patent documentation of the absolutely dry method cleaning apparatus of the blast furnace aspect that retrieval is relevant does not have the record of discovery on bag-type dust cylindrical shell layout frame shelf structure, the content that retrieves relates generally to and enters the preceding temperature measure of control of bag-type dust cylindrical shell, Chinese patent 200420052932.2 has been introduced " dry-method dust-removal device with the function of diffusing ", is made up of thick dust removal installation, smart dust removal installation and pipeline valve.Be characterized in, it thick dust removal installation and smart dust removal installation between be provided with bleeder so that diffuse in the enforcement in emergency circumstances that may cause smart dust removal installation to lose efficacy.
At present in the absolutely dry method dust collecting process of high coal that uses, because the restriction of dust-removal cloth-bag heatproof, adopted the fast cooling device and the raw gas temperature of the too high use of raw gas temperature to cross the low bleeding device that uses in the control of casing temperature in, make whole dedusting mechanism more complicated, the dedusting cost is also high.
The utility model content:
The purpose of this utility model provides the absolutely dry method bag-type dust collector of blast furnace raw gas that heat sink was diffused, do not had to a kind of nothing, mainly solve existing dedusting mechanism more complicated, dedusting cost height, and the low temperature phenomenon causes dust to condense to cause the not smooth technical problem of the defeated ash of ash handing pipeline.
In order to reach above purpose, the technical solution of the utility model is: a kind of blast furnace raw gas is absolutely dry method bag-type dust collector, comprise bag-type dust cylindrical shell group and cloth bag blowback loop, bag-type dust cylindrical shell group is made of 12～18 bag-type dust cylindrical shells that are divided into 2 rows, drawing half purified gas house steward by gravitational precipitator divides 2 the tunnel to be connected with each bag-type dust cylindrical shell through bag-type dust half purified gas imported valve, 12～18 bag-type dust cylindrical shells divide three groups to connect three road ash conveying pipes by bag-type dust cylindrical shell unloading valve door, three road ash conveying pipes connect big grey storehouse, on three road ash conveying pipes, be provided with the source of the gas by-pass valve control, 2 arrange bag dedusting cylindrical shell by 2 road purified gas output tubes through the total pipe coupling TRT of purified gas power generation system, the purified gas output tube is provided with the purified gas output valve, three road ash conveying pipes connect the TRT power generation system by defeated grey gas source pipe, defeated grey gas source pipe is provided with the defeated grey valve of coal gas, the nitrogen small transfer line that cloth bag blowback loop is used by 2 tunnel blowbacks connects each bag-type dust cylindrical shell, and described cloth bag blowback loop is by the nitrogen storage gas tank output valve that connects successively, the nitrogen storage gas tank that blowback is used, nitrogen inlet constitutes.
Nitrogen inlet also is connected with defeated grey gas source pipe by standby nitrogen storage gas tank that connects defeated grey usefulness successively and the standby nitrogen valve of failing grey usefulness.
The utility model is by the layout combination to 12～18 groups of bag-type dust cylindrical shells, be divided into three groups of defeated grey structural states, at the requirement of differing temps, in cylindrical shell, adopt the cloth bag setting of unlike material, burn the risk of cloth bag and low temperature (80 ℃) paste bag with opposing high temperature (300 ℃).Realized that the absolutely dry method bag-type dust of large blast furnace increases the effect of coal gas latent heat, has improved the turbine generating efficiency.
The measure of the concrete anti-abnormal temperature of the utility model is: 18 bag-type dust cylindrical shells are divided into two rows, adopt the tetrafluoroethylene overlay film to handle the cloth bag of P84 glass fibre compound spiked felt material in first group of 4 cylindrical shell among one row, the anti-low temperature of its major function (≤80 ℃) is stuck with paste bag, this group bag-type dust cylindrical shell inserts an ash pipeline separately, when in case Import Gas is lower than 80 ℃ (as: wind process etc. is stopped, answered to new blast furnace opening and blast furnace), this group bag-type dust cylindrical shell can be come into operation, during normal temps, this group is done standby; Adopt the cloth bag of P84 glass fibre compound spiked felt material in 5 cylindrical shells of second group and the 3rd group of 9 cylindrical shells of another row, its major function high temperature resistance (300 ℃), these two groups of bag-type dust cylindrical shells insert two ash pipelines in addition respectively, use the defeated ash of this two-way ash pipeline during works better.
The utility model is compared with at present existing technology: have the advantage of opposing high and low temperature ability, structure is provided with rationally, the characteristics of energy-conserving and environment-protective.
The utility model main innovate point: 1, adopt the different cloth bag materials that require, the coal gas of corresponding differing temps, 2, three groups of independent layout type that insert three ash pipelines respectively of cloth bag cylindrical shell have adapted to the variation of abnormal temperature, and what help producing is stable.
Description of drawings:
Fig. 1 is the utility model structural representation
Among the figure: 1-raw gas inlet mouth, 2-gravitational precipitator, 3-half purified gas house steward, 4-bag-type dust, half purified gas imported valve, 5-bag-type dust cylindrical shell, 6-purified gas output tube, 7-purified gas output valve, 8-purified gas house steward, 9-coal gas is failed grey valve, 10-defeated grey gas source pipe, 11-nitrogen inlet, the standby nitrogen storage gas tank of 12-defeated grey usefulness, the standby nitrogen valve of 13-defeated grey usefulness, the nitrogen storage gas tank that 14-blowback is used, 15-nitrogen storage gas tank output valve, the nitrogen small transfer line that 16-blowback is used, 17-source of the gas by-pass valve control, 18-bag-type dust cylindrical shell unloading valve door, 19-three road ash conveying pipes, 20-big grey storehouse, 21-ash-removing valve door.
Embodiment:
Embodiment 1: with reference to Fig. 1, a kind of blast furnace raw gas is absolutely dry method bag-type dust collector, comprise bag-type dust cylindrical shell group and cloth bag blowback loop, device portal is provided with gravitational precipitator 2, the device outlet is provided with big grey storehouse 20, gravitational precipitator 2 is provided with raw gas inlet mouth 1, bag-type dust cylindrical shell group is made of 18 bag-type dust cylindrical shells 5 that are divided into 2 rows, gravitational precipitator 2 connects half purified gas house steward 3, half purified gas house steward 3 minutes 2 tunnel is connected with each bag-type dust cylindrical shell 5 through bag-type dust half purified gas imported valve 4, each bag-type dust cylindrical shell divides three groups by bag-type dust cylindrical shell unloading valve door 18 connections three road ash conveying pipes 19, three road ash conveying pipes 19 connect big grey storehouse 20, on three road ash conveying pipes, be provided with source of the gas by-pass valve control 17,20 bottoms, big grey storehouse are provided with ash-removing valve door 21, the 2 bag dedusting cylindrical shells of arranging connect the TRT power generation systems by 2 road purified gas output tubes 6 through purified gas house steward 8, purified gas output tube 6 is provided with purified gas output valve 7, three road ash conveying pipes connect the TRT power generation system by defeated grey gas source pipe 10, defeated grey gas source pipe 10 is provided with the defeated grey valve 9 of coal gas, the nitrogen small transfer line 16 that cloth bag blowback loop is used by 2 tunnel blowbacks connects each bag-type dust cylindrical shell 5, and described cloth bag blowback loop is by the nitrogen storage gas tank output valve 15 that connects successively, the nitrogen storage gas tank 14 that blowback is used, nitrogen inlet 11 constitutes.
Nitrogen inlet 11 also is connected with defeated grey gas source pipe 10 by standby nitrogen storage gas tank 12 that connects defeated grey usefulness successively and the standby nitrogen valve 13 of failing grey usefulness.
The raw gas treating processes is as follows:
1, raw gas is handled master loop: the blast furnace raw gas that produces in the blast furnace is transported to gravitational precipitator 2 by raw gas inlet mouth 1, leach big dust particle, half clean raw gas of output is behind more than half purified gas house stewards 3, by 4 fens two-way of bag-type dust half purified gas imported valve half purified gas is sent into blast furnace gas all dry bag-type dust cylindrical shell 5 and carry out the processing of half purified gas, purified gas 6 after the processing enters purified gas house steward 8 output high heating value gases to the TRT power generation system by after exporting small transfer line process purified gas output valve 7.
2, cloth bag is handled the blowback loop: the nitrogen that nitrogen inlet 11 is sent here, send into the nitrogen storage gas tank 14 that blowback is used, the nitrogen small transfer line of using through blowback by nitrogen storage gas tank output valve 15 16, enter the powder ash that 5 pairs of cloth bag upward filtrations of sack cleaner cylindrical shell get off and be blown into cloth bag cylindrical shell bottom ash-storing bin, make leaching unimpeded.
3, defeated grey source of the gas and standby switching setting and method: get one road coal gas on the purified gas house steward 8, through the defeated grey valve 9 of coal gas with purified gas as defeated grey power gas source; At the nitrogen that nitrogen inlet 11 is sent here, send into the nitrogen storage gas tank 12 of defeated grey usefulness, purge as standby or pipeline maintenance and use gas, open during use defeated grey usefulness standby nitrogen valve 13, close the defeated grey valve 9 of coal gas and get final product.
4, dust unloads grey conveying loop: carry coal gas by the defeated grey power that (dual-purpose one is equipped with) source of the gas by-pass valve control 17 in three road coal gas ash conveying pipes attracts, with the powder ash that is blown into cloth bag cylindrical shell bottom ash-storing bin through unloading valve door 18 with the storehouse in the powder ash send into ash conveying pipe 19 to big grey storehouse 20 and concentrate pendingly, regularly will the dust big grey storehouse in control to send into every day then and transport outward airtight automobile transfer cask and see off through big grey storehouse ash-removing valve door 21.
Embodiment 2: bag-type dust cylindrical shell group is made of 12 bag-type dust cylindrical shells 5 that are divided into 2 rows, is divided into 3 groups, is 4,2,6 distributions, and all the other are identical with embodiment 1.
Embodiment 3: bag-type dust cylindrical shell group is made of 14 bag-type dust cylindrical shells 5 that are divided into 2 rows, is divided into 3 groups, is 4,3,7 distributions, and all the other are identical with embodiment 1.
Embodiment 4: bag-type dust cylindrical shell group is made of 16 bag-type dust cylindrical shells 5 that are divided into 2 rows, is divided into 3 groups, is 4,4,8 distributions, and all the other are identical with embodiment 1.
Claims (3)
1, a kind of blast furnace raw gas is absolutely dry method bag-type dust collector, it is characterized in that comprising bag-type dust cylindrical shell group and cloth bag blowback loop, bag-type dust cylindrical shell group is made of 12～18 bag-type dust cylindrical shells that are divided into 2 rows, the half purified gas house steward who is drawn by gravitational precipitator divides 2 the tunnel to be connected with each bag-type dust cylindrical shell through bag-type dust half purified gas imported valve, 12～18 bag-type dust cylindrical shells divide three groups to connect three road ash conveying pipes by bag-type dust cylindrical shell unloading valve door, three road ash conveying pipes connect big grey storehouse, on three road ash conveying pipes, be provided with the source of the gas by-pass valve control, 2 arrange bag dedusting cylindrical shell by 2 road purified gas output tubes through the total pipe coupling TRT of purified gas power generation system, the purified gas output tube is provided with the purified gas output valve, three road ash conveying pipes connect the TRT power generation system by defeated grey gas source pipe, defeated grey gas source pipe is provided with the defeated grey valve of coal gas, and the nitrogen small transfer line that cloth bag blowback loop is used by 2 tunnel blowbacks connects each bag-type dust cylindrical shell.
2, the absolutely dry method bag-type dust collector of a kind of blast furnace raw gas according to claim 1 is characterized in that described cloth bag blowback loop is made of the nitrogen storage gas tank output valve that connects successively, nitrogen storage gas tank, the nitrogen inlet that blowback is used.
3, the absolutely dry method bag-type dust collector of a kind of blast furnace raw gas according to claim 2 is characterized in that nitrogen inlet is also by the standby nitrogen storage gas tank of the defeated grey usefulness of connection and the standby nitrogen valve of defeated grey usefulness are connected with defeated grey gas source pipe successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201853143U CN201280566Y (en) | 2008-09-27 | 2008-09-27 | Large blast furnace crude gas full-dry method cloth bag dust-removing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201853143U CN201280566Y (en) | 2008-09-27 | 2008-09-27 | Large blast furnace crude gas full-dry method cloth bag dust-removing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201280566Y true CN201280566Y (en) | 2009-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201853143U Expired - Fee Related CN201280566Y (en) | 2008-09-27 | 2008-09-27 | Large blast furnace crude gas full-dry method cloth bag dust-removing apparatus |
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| CN (1) | CN201280566Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708406B (en) * | 2009-12-30 | 2011-08-31 | 中冶南方工程技术有限公司 | Group control method of blast furnace gas cloth bag dust catcher system for pipeline dust conveying |
| CN110836839A (en) * | 2018-08-16 | 2020-02-25 | 成都瑞柯林工程技术有限公司 | Dust monitoring method and system and signal processing device |
| CN112626300A (en) * | 2020-12-15 | 2021-04-09 | 广西钢铁集团有限公司 | Double-mode back-blowing ash removal device for blast furnace dry-method dust removal cloth bag |
-
2008
- 2008-09-27 CN CNU2008201853143U patent/CN201280566Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708406B (en) * | 2009-12-30 | 2011-08-31 | 中冶南方工程技术有限公司 | Group control method of blast furnace gas cloth bag dust catcher system for pipeline dust conveying |
| CN110836839A (en) * | 2018-08-16 | 2020-02-25 | 成都瑞柯林工程技术有限公司 | Dust monitoring method and system and signal processing device |
| CN110836839B (en) * | 2018-08-16 | 2022-02-22 | 成都瑞柯林工程技术有限公司 | Dust monitoring method and system and signal processing device |
| CN112626300A (en) * | 2020-12-15 | 2021-04-09 | 广西钢铁集团有限公司 | Double-mode back-blowing ash removal device for blast furnace dry-method dust removal cloth bag |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090729 Termination date: 20160927 |