CN101812563A - High-temperature dust-removing device for processing converter gas - Google Patents
High-temperature dust-removing device for processing converter gas Download PDFInfo
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- CN101812563A CN101812563A CN200910073817A CN200910073817A CN101812563A CN 101812563 A CN101812563 A CN 101812563A CN 200910073817 A CN200910073817 A CN 200910073817A CN 200910073817 A CN200910073817 A CN 200910073817A CN 101812563 A CN101812563 A CN 101812563A
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Abstract
The invention provides a high-temperature dust-removing device for processing converter gas, and aims to solve the technical problems of full utilization of energy sources and improvement in filtration effect in a high-temperature environment. The technical scheme is characterized in that: the device comprises a shell; the shell is provided with a crude gas inlet, a clean gas outlet and a reverse air-blowing port; a filter material is arranged on a graining board on the inner-upper part of the shell, the graining board divides the inner space into two independent parts which are a clean gas room and a filter room respectively, the filter room is connected with an ash bucket, and an ash-storing port is arranged on the lower part of the ash bucket; and the filter material is the high-temperature resistant material which can work for a long time at the ambient temperature of between 300 and 800 DEG C, is prepared into a filter tube shape with one closed end and closely positioned on the graining board by a mechanical device. The device has the advantages of directly guiding the gas in a cooling gas duct to a dust-removing device in the dust removing process, simplifying the process, making effective use of energy, along with environmental protection, energy conservation and high filter efficiency.
Description
Technical field
The invention belongs to the gas high-temperature dust removal field in the metallurgical steelmaking process, particularly a kind of high-temperature dust removing device that is used for coal gas of converter improvement.
Background technology
The converter current dedusting is reclaimed technology and is mainly contained wet method and two kinds of methods of dry method, and China's steelworks generally adopts wet dedusting.
The main technique of wet dedusting is through cooling stack and cooling system with coal gas of converter, pressure cools down coal gas of high temperature, the vapor recovery utilization that the cooling down high-temperature flue gas is produced, pass through thick dedusting of Guan Jinghang and thin dedusting in the two-stage Wen again, dewater with the water smoke separator, flue gas after being purified is discharged by induced draft fan by the venturi-type under meter.Dust content of gas after this method is handled is higher, the coal gas of Pai Chuing need be provided with electric precipitator and just can utilize after the smart dedusting through row at last, there is secondary pollution in system, sewage needs to handle, energy dissipation is bigger, and the automatic control system level is low, and the coal-gas recovering amount is lower, floor space is big, and environment protection treating and management difficulty are bigger.
Adopt the dry method dust effect more quite a lot of than wet method dedusting, its processing method is that coal gas of converter is entered evaporative cooler again through the row cooling behind gasification cooling flue, generally be cooled to 200 ℃-300 ℃, filter dust by electrostatic field electric precipitation or employing cloth bag type process of cleaning then, last switching station is with qualified coal-gas recovering, and ineligible coal gas feeding is diffused the tower burning and diffused in the air.This method with respect to the advantage of wet dedusting is: brownout, water and land used; Udst separation efficient height, the dust mass concentration is reduced to 10mg/m
3Below; System all adopts dry process, does not have secondary pollution and sewage disposal; System's resistance is decreased little, and coal gas calorific value height reclaims dust and can directly utilize, and has reduced energy consumption.
But, in dry-dedusting system, the temperature of coal gas of converter behind cooling stack is higher, generally at 800-1000 ℃, bag-type dust is because therefore the cloth bag non-refractory adopts electric precipitation or bag-type dusting all must force cooling through wet cooling tower, and heat can slattern greatly, and the dedusting of employing electric precipitation mode, initiation potential easily.
For the energy is made full use of, the filtration efficiency height, it is high-temperature dust removal equipment below 800 ℃ that prior art does not provide a kind of Working environment, gives and makes troubles in producing.
Summary of the invention
For solving making full use of of the energy, under hot environment, carry out dust removal process for a long time, the present invention has designed a kind of high-temperature dust removing device that coal gas of converter is administered that is used for, and has solved deficiency of the prior art.
The present invention realizes that the technical scheme that goal of the invention adopts is, a kind of high-temperature dust removing device that is used for coal gas of converter improvement, comprise housing, the raw gas import that is provided with on the housing, the purified gas outlet, the blowback air port, filter material is arranged on the card on enclosure interior top, card is divided into independently two parts with the internal space, clean coal air chamber and filtration chamber, the filtration chamber connects ash bucket, the ash bucket below is provided with ash-removing mouth, this filter material is the high temperature material that adapts to long term operation under 800 ℃ of-300 ℃ of envrionment temperatures, is prepared as the filtration tubulose of end sealing, be positioned on the card by means of the mechanical part sealing.
The invention has the beneficial effects as follows that the energy utilization rate height is saved the energy, hold high temperature resistant, good filtration effect, environmental protection.
The present invention is described in detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the amplification profile of temperature difference compensation structure 5A among the present invention.
Fig. 3 is the amplification profile of temperature difference compensation structure 5B among the present invention.
Fig. 4 is the embodiment of supplemental support locating device among the present invention.
Fig. 5 is a housing assembled embodiment of the present invention.
In the accompanying drawing, the 1st, housing, 1-1 are the card positioning tables, 1-1-1 is the card pilot hole, and 1-1-2 is a tack bolt, the 2nd, and strainer tube, 2-1 is a tube stub, and 2-1-1 is a main body, and 2-1-2 is a stabilizer sleeve, 2-1-1-1 is a positioning table, and 2-1-1-2 is a setscrew nut, and 2-2 is a chimney filter, the 3rd, card, 3-1 are positioning through hole, the 4th, and the stainless steel sealing-ring, the 5th, temperature difference compensation structure, the 6th, raw gas import, the 7th, purified gas outlet, the 8th, blowback air port, the 9th, ash-removing mouth, the 10th, mounting flange, the 11st, supplemental support locating device, 11-1 are support sets, and 11-2 is a retaining ring, 11-3 is an elastic link, 12 clean coal air chambers, the 13rd, filtration chamber, the 14th, ash bucket.
Embodiment
Referring to Fig. 1, a kind of high-temperature dust removing device that is used for coal gas of converter improvement, comprise the raw gas import, purified gas outlet, the blowback air port that are provided with on housing, the housing, filter material is arranged on the card on enclosure interior top, card is divided into independently two parts with the internal space, clean coal air chamber and filtration chamber, the filtration chamber connects ash bucket, the ash bucket below is provided with ash-removing mouth, this filter material is the high temperature material that adapts to long term operation under 800 ℃ of-300 ℃ of envrionment temperatures, be prepared as end sealing strainer tube 2 shapes, be positioned on the card 3 by means of the mechanical part sealing.
The temperature-resistant material supporting, elasticity, elevated-temperature seal element and temperature difference compensation structure 5 have been adopted in the one-piece construction of above-mentioned housing 1 or on structure unit connection or the location with the temperature that works online.
The high temperature material that above-mentioned strainer tube 2 adopts is an Al series metal compounds, by means of 200MPa-260MPa forming under the pressure, 1100 ℃-1300 ℃ airtight sintering typings.
The Al series metal compounds that above-mentioned strainer tube 2 adopts is intermetallic Fe-Al compound or Intermatallic Ti-Al compound.
What adopt in the one-piece construction of above-mentioned housing 1 with the supporting temperature-resistant material of the temperature that works online is: adopt boiler steel under 800 ℃ of-650 ℃ of envrionment temperatures during long term operation, adopt heat-resisting steel or stainless steel under 650 ℃ of-400 ℃ of envrionment temperatures during long term operation, what adopt during long term operation under 400 ℃ of-300 ℃ of envrionment temperatures is high-quality soft steel.
Be provided with the adiabator layer supporting with envrionment temperature in the one-piece construction of above-mentioned housing 1, adiabator layer is provided with the outside surface that the position is a housing 1 or the internal surface or the surfaces externally and internally of housing 1.
Above-mentioned structure unit connect go up between the mounting flange 10 that the concrete position of adopting elasticity, elevated-temperature seal element comprises the raw gas import 6 that is provided with on the housing 1, purified gas outlet 7, blowback air port 8, ash-removing mouth 9 and ducts, between manhole, process Installation hole and the supporting cover plate of housing 1 setting, card 3 and strainer tube 2 connecting portions, said elasticity, elevated-temperature seal element are stainless steel foil liner inorganic fibre gaskets, or graphite grazing pad, or asbestos washer.
Adopted on the above-mentioned structure unit location and the position of the temperature difference compensation structure 5 that the temperature that works online is supporting is: between card 3 and the housing 1, between strainer tube 2 and the card 3; Adopted with the supporting temperature difference compensation structure 5 of the temperature that works online be: the card positioning table 1-1 that housing 1 inwall is provided with goes up the positioning through hole 3-1 of the corresponding distribution of uniform and card pilot hole 1-1-1, leave the temperature difference compensation size supporting between card pilot hole 1-1-1 diameter and the tack bolt 1-1-2 diameter with envrionment temperature, between card positioning table 1-1 and card 3, be provided with the stainless steel sealing-ring 4 of the inorganic sealing material of liner elasticity between tack bolt 1-1-2 and card 3 and the card positioning table 1-1, leave the temperature difference compensation size supporting between the uniform positioning through hole 3-1 internal diameter on the tube stub 2-1 external diameter of strainer tube 2 and the card 3 with envrionment temperature.
Has the tube stub 2-1 that a metallic substance is made in the structure of above-mentioned strainer tube 2, the chimney filter 2-2 that this tube stub 2-1 and high temperature resistant filter material are made adopts weldprocedure to be connected, and strainer tube 2 is located by connecting by means of the sealing that tube stub 2-1 and card 3 formation have temperature difference compensation structure 5.
Tube stub 2-1 in above-mentioned strainer tube 2 structures is made up of main body 2-1-1 and stabilizer sleeve 2-1-2 two portions, main body 2-1-1 is the tubular structure of band positioning table 2-1-1-1, front end processes screw thread, and rear end and chimney filter 2-2 counterpart welding back cover is loaded onto stabilizer sleeve 2-1-2 and carried out all side welds and form complete strainer tube 2.
Above-mentioned strainer tube 2 is positioned on the card 3 by means of setscrew nut 2-1-1-2,4 sealings of stainless steel sealing-ring.
Above-mentioned strainer tube 2 bottoms that are positioned on the card 3 are provided with supplemental support locating device 11.
Comprise the support set 11-1 that is sleeved on strainer tube 2 bottoms in above-mentioned supplemental support locating device 11 structures, be provided with retaining ring 11-2 in the filtration chamber around 13 inwall bottoms and the support set 11-1, elastic link 11-3 will connect into supplemental support locating device 11 between the support set 11-1 and with filtration chamber's 13 inwalls by having contact with of two ends.
Above-mentioned housing 1 adopts the segmentation modular construction, clean coal air chamber 12, filtration chamber 13, is provided with on the ash bucket 14 of ash-removing mouth 9 mounting flange 10 is set, and realizes the assembling of housing 1 each section is connected by joint bolt and stainless steel sealing-ring 4.
Upper and lower manhole plate position and fabrication hole position are set on the above-mentioned housing 1.
The present invention is when concrete the use, behind cooling stack, can directly connect high-temperature dust removing device at coal gas of converter, the temperature of raw gas import 14 is below 800 ℃, raw gas enters filtration chamber 13 and filters, strainer tube 2 in the filtration chamber 13 adopts the controlled iron aluminium based compound filtering material in hole, and the pure coal gas after the filtration is discharged by purified gas outlet 7.When the blowback process was opened, the high pressure purge gas was entered by blowback air port 8, and strainer tube 2 is carried out the blowback cleaning, and dust impurity is scattered in the ash bucket 14, carries out timing by ash-removing mouth 9 and puts ash.
The present invention has manhole in the upper and lower part of housing 1, conveniently assemble and disassemble filter material and safeguarding.When assembling strainer tube 2, strainer tube 2 is entered by following manhole, adopts mode from bottom to top to be connected in the card 3, and the support personnel enters by last manhole and cooperates overlap joint.
Because the temperature in filtration chamber 13 is the high temperature below 800 ℃, the mode of connection of strainer tube 2 is taked to be fixed in the card 3 with supporting tube stub 2-1, strainer tube 2 docked with supporting wlding with tube stub 2-1 and the socket welding firm, because strainer tube 2 has certain-length, adopt supplemental support locating device 11 that the bottom of strainer tube 2 is fixed, the slightly larger in diameter of support set 11-1 is in the diameter of strainer tube 2 in the supplemental support locating device 11, and supplemental support locating device 11 utilizes the retaining ring 11-2 and the elastic link 11-3 that are provided with around the support set 11-1 to be hooked on the inwall of filtration chamber 13.
The present invention's design is divided into three parts with the one-piece construction of housing 1: clean coal air chamber 12, filtration chamber 13 and ash bucket 14, utilize mounting flange 10 sealing assemblings.
Claims (15)
1. one kind is used for the high-temperature dust removing device that coal gas of converter is administered, comprise housing, the raw gas import that is provided with on the housing, the purified gas outlet, the blowback air port, filter material is arranged on the card on enclosure interior top, card is divided into independently two parts with the internal space, clean coal air chamber and filtration chamber, the filtration chamber connects ash bucket, the ash bucket below is provided with ash-removing mouth, it is characterized in that: described filter material is the high temperature material that adapts to long term operation under 800 ℃ of-300 ℃ of envrionment temperatures, is prepared as strainer tube (2) shape of end sealing, be positioned on the card (3) by means of the mechanical part sealing.
2. a kind of high-temperature dust removing device that coal gas of converter is administered that is used for according to claim 1 is characterized in that: adopted the temperature-resistant material supporting with the temperature that works online, elasticity, elevated-temperature seal element and temperature difference compensation structure (5) in the one-piece construction of housing (1) or on structure unit connection or the location.
3. a kind of high-temperature dust removing device that coal gas of converter is administered that is used for according to claim 1, it is characterized in that: the high temperature material that described strainer tube (2) adopts is an Al series metal compounds, by means of 200MPa-260MPa forming under the pressure, 1100 ℃-1300 ℃ airtight sintering typings.
4. a kind of high-temperature dust removing device that coal gas of converter is administered that is used for according to claim 3, it is characterized in that: the Al series metal compounds that described strainer tube (2) adopts is intermetallic Fe-Al compound or Intermatallic Ti-Al compound.
5. a kind of high-temperature dust removing device that coal gas of converter is administered that is used for according to claim 2, it is characterized in that: what adopt in the one-piece construction of housing (1) with the supporting temperature-resistant material of the temperature that works online is: adopt boiler steel under 800 ℃ of-650 ℃ of envrionment temperatures during long term operation, adopt heat-resisting steel or stainless steel under 650 ℃ of-400 ℃ of envrionment temperatures during long term operation, what adopt during long term operation under 400 ℃ of-300 ℃ of envrionment temperatures is high-quality soft steel.
6. a kind of high-temperature dust removing device that coal gas of converter is administered that is used for according to claim 5, it is characterized in that: be provided with the adiabator layer supporting with envrionment temperature in the one-piece construction of housing (1), adiabator layer is provided with the outside surface that the position is a housing (1) or the internal surface or the surfaces externally and internally of housing (1).
7. a kind of high-temperature dust removing device that coal gas of converter is administered that is used for according to claim 2, it is characterized in that: structure unit connects goes up employing elasticity, the concrete position of elevated-temperature seal element comprises the raw gas import (6) that housing (1) upward is provided with, purified gas outlet (7), blowback air port (8), between the mounting flange (10) of ash-removing mouth (9) and ducts, the manhole that housing (1) is provided with, between process Installation hole and the supporting cover plate, card (3) and strainer tube (2) connecting portion, said elasticity, the elevated-temperature seal element is a stainless steel foil liner inorganic fibre gasket, or graphite grazing pad, or asbestos washer.
8. a kind of high-temperature dust removing device that coal gas of converter is administered that is used for according to claim 2, it is characterized in that: adopted on the structure unit location and the position of the temperature difference compensation structure (5) that the temperature that works online is supporting is: between card (3) and the housing (1), between strainer tube (2) and the card (3); Adopted with the supporting temperature difference compensation structure of the temperature that works online (5) be: the card positioning table (1-1) that housing (1) inwall is provided with is gone up the positioning through hole (3-1) of the corresponding distribution of uniform and card pilot hole (1-1-1), leave the temperature difference compensation size supporting between card pilot hole (1-1-1) diameter and tack bolt (1-1-2) diameter with envrionment temperature, between card positioning table (1-1) and card (3), be provided with the stainless steel sealing-ring (4) of the inorganic sealing material of liner elasticity between tack bolt (1-1-2) and card (3) and the card positioning table (1-1), tube stub (2-1) external diameter of strainer tube (2) and card (3) are gone up between uniform positioning through hole (3-1) internal diameter and are left the temperature difference compensation size supporting with envrionment temperature.
9. a kind of high-temperature dust removing device that coal gas of converter is administered that is used for according to claim 1, it is characterized in that: have the tube stub (2-1) that a metallic substance is made in the structure of strainer tube (2), this tube stub (2-1) adopts weldprocedure to be connected with the chimney filter (2-2) that high temperature resistant filter material is made, and strainer tube (2) forms the sealing with temperature difference compensation structure (5) by means of tube stub (2-1) and card (3) and is located by connecting.
10. a kind of high-temperature dust removing device that coal gas of converter is administered that is used for according to claim 9, it is characterized in that: the tube stub (2-1) in strainer tube (2) structure is made up of main body (2-1-1) and stabilizer sleeve (2-1-2) two portions, main body (2-1-1) is the tubular structure of band positioning table (2-1-1-1), front end processes screw thread, and rear end and chimney filter (2-2) counterpart welding back cover is loaded onto stabilizer sleeve (2-1-2) and carried out all side welds and form complete strainer tube (2).
11. a kind of high-temperature dust removing device that coal gas of converter is administered that is used for according to claim 9 is characterized in that: strainer tube (2) is positioned on the card (3) by means of setscrew nut (2-1-1-2), stainless steel sealing-ring (4) sealing.
12. a kind of high-temperature dust removing device that coal gas of converter is administered that is used for according to claim 11, it is characterized in that: strainer tube (2) bottom that is positioned on the card (3) is provided with supplemental support locating device (11).
13. a kind of high-temperature dust removing device that coal gas of converter is administered that is used for according to claim 12, it is characterized in that: comprise the support set (11-1) that is sleeved on strainer tube (2) bottom in supplemental support locating device (11) structure, (13) inwall bottom and support set (11-1) are provided with retaining ring (11-2) all around in the filtration chamber, and elastic link (11-3) will connect into supplemental support locating device (11) between the support set (11-1) and with filtration chamber (13) inwall by having contact with of two ends.
14. a kind of high-temperature dust removing device that coal gas of converter is administered that is used for according to claim 1, it is characterized in that: the housing of this device (1) adopts the segmentation modular construction, clean coal air chamber (12), filtration chamber (13), be provided with on the ash bucket (14) of ash-removing mouth (9) mounting flange (10) is set, realize the assembling of each section of housing (1) is connected by joint bolt and stainless steel sealing-ring (4).
15. a kind of high-temperature dust removing device that coal gas of converter is administered that is used for according to claim 1 is characterized in that: upper and lower manhole plate position and fabrication hole position are set on the described housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910073817A CN101812563A (en) | 2009-02-24 | 2009-02-24 | High-temperature dust-removing device for processing converter gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910073817A CN101812563A (en) | 2009-02-24 | 2009-02-24 | High-temperature dust-removing device for processing converter gas |
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| CN101812563A true CN101812563A (en) | 2010-08-25 |
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| CN200910073817A Pending CN101812563A (en) | 2009-02-24 | 2009-02-24 | High-temperature dust-removing device for processing converter gas |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788486A (en) * | 2010-03-02 | 2010-07-28 | 武汉钢铁(集团)公司 | Flue gas on-line analysis device of converter hot end |
| CN105506215A (en) * | 2015-12-25 | 2016-04-20 | 中冶南方工程技术有限公司 | Converter primary smoke filtering device and filtering method |
| WO2017084062A1 (en) * | 2015-11-19 | 2017-05-26 | 冯李荣 | Environment-friendly hot natural gas output apparatus |
| CN107335297A (en) * | 2017-08-23 | 2017-11-10 | 中国华能集团清洁能源技术研究院有限公司 | A kind of compact pulse backblowing cleaning ash filter |
-
2009
- 2009-02-24 CN CN200910073817A patent/CN101812563A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788486A (en) * | 2010-03-02 | 2010-07-28 | 武汉钢铁(集团)公司 | Flue gas on-line analysis device of converter hot end |
| WO2017084062A1 (en) * | 2015-11-19 | 2017-05-26 | 冯李荣 | Environment-friendly hot natural gas output apparatus |
| CN105506215A (en) * | 2015-12-25 | 2016-04-20 | 中冶南方工程技术有限公司 | Converter primary smoke filtering device and filtering method |
| CN107335297A (en) * | 2017-08-23 | 2017-11-10 | 中国华能集团清洁能源技术研究院有限公司 | A kind of compact pulse backblowing cleaning ash filter |
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Application publication date: 20100825 |