CN2383844Y - Pulse bag-type duster for gas from blast furnace - Google Patents
Pulse bag-type duster for gas from blast furnace Download PDFInfo
- Publication number
- CN2383844Y CN2383844Y CN 99207788 CN99207788U CN2383844Y CN 2383844 Y CN2383844 Y CN 2383844Y CN 99207788 CN99207788 CN 99207788 CN 99207788 U CN99207788 U CN 99207788U CN 2383844 Y CN2383844 Y CN 2383844Y
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- Prior art keywords
- ash
- gas
- dust
- line
- pulse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 239000000428 dust Substances 0.000 claims abstract description 27
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 238000007664 blowing Methods 0.000 claims abstract description 6
- 239000002956 ash Substances 0.000 claims description 20
- 239000010881 fly ash Substances 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 6
- 210000000056 organ Anatomy 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 2
- 229910000679 solder Inorganic materials 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000000717 retained effect Effects 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 26
- 239000003034 coal gas Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
Landscapes
- Blast Furnaces (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model relates to a pulse duster with a bag type of separation cylinder and off-line dust removing for gas of a blast furnace, and particularly a filtering device of blast furnace gas by a dry method. The utility model is characterized in that off-line dust cleaning and overhauling can be carried out; a bag and an entire skeleton are changed by opening a cover form the upper part, pulse blowing can be realized with low pressure and high speed; dust can be drained by two buckets and three valves; automatic control of pressure difference tracking can be realized. After raw gas enters the cylinder, dust is retained in the filter bag and gas passes through the filter bag and flows out through a clean gas space and the branch pipe thereof. When a running resistance achieves a set value, a control meter orderly turns off a pneumatic butterfly valve of each cylinder body and cuts gas current off and thorough dust removing for the filter bag is carried out. The utility model solves the problems of 'reattachment of dust' and 'failure' of dust removing of a conventional pulse dust collector for gas of a blast furnace.
Description
The utility model relates to a kind of blast furnace gas dry filtering type dust removal installation.
Existing blast furnace gas impulse sack cleaner is the online ash removal manipulation type, has " dust is attached again " phenomenon in the jetting deashing process, thereby can not realize deashing completely." dust is attached again " can make deashing " inefficacy " when serious, causes disadvantageous effects such as filtration velocity reduction, resistance raise unusually, life-span of the filter bag shortening, the strain of pulse valve block.Facts have proved: if stopping to carry out jetting deashing under the filtering gas mobile condition, and give dust the sufficient settling time, then deashing ash-removal effect more thorough, filter bag is better.
" pocket type dust remover capable of stopping air current " that the patent of invention (patent No. 871016591 certificate number 4536) that people such as Hu Jianzhong obtain proposes is the off-line ash-clearing manipulation type, but its structure formation only is applicable to the dedusting of flue gas or common gases; Patent ZL952174892 has proposed a kind of blast furnace gas low pressure pulse dust remover, and it is the online ash removal manipulation type, and has following shortcoming:
1. can not realize the maintenance of branch tube off-line, blast furnace must stop production when promptly monotubular changed the bag maintenance;
2. the workman must enter in the purified gas space and just can change bag, and environment is poor, dangerous;
3. skeleton must be made two joint or three joints, insecure, easy to wear filter bag.
Blast furnace gas dry dusting uses pressing gas reverse gas cleaning type sack cleaner more both at home and abroad.After the nineties, domestic the pulse jet technology is used to transform 300m
3The above-mentioned sack cleaner of level and following blast furnace thereof, existing more than ten so far, but be the online ash removal manipulation type.
Task of the present utility model is the branch tube off-line ash-clearing pulse bag type dust collector of a kind of energy solution of design " dust is attached again " and deashing " inefficacy " problem, with filtration velocity, the reduction equipment resistance that improves fly-ash separator, the work-ing life that reduces jet frequency, prolongation filter bag and pulse valve block.
The blast furnace gas that the utility model proposes divides a tube off-line ash-clearing pulse bag type dust collector to be made up of off-line ash-clearing system, filtering system, pulse jet system, dust removing system and stored program controlled, it is characterized by: adopt divide tube off-line ash-clearing and off-line maintenance structure, on take off and cover bag mode of changing and whole skeleton, low pressure fast-pulse spraying and blowing organ, two struggle against three valve dust removing systems and the automatic stored program controlleds of pressure reduction following feedback.
Below in conjunction with accompanying drawing the utility model is described in detail.
Ash bucket erecting by overhang in the middle of the accompanying drawing 1 sectional view accompanying drawing 2 low pressure fast-pulse spraying and blowing organ figure accompanying drawings 3 of the present utility model
Fig. 1 represents the sectional view of a kind of embodiment of the present utility model.The fly-ash separator body is a steel construction cylinder, and a cover cleaning apparatus should be made up of six cylinders at least.Raw gas inserts by being responsible for 5, through manually butterfly valve 21, glasses valve 20, raw gas arm 6 blow out to ash bucket 4, when coal gas stream is turned back upwards, coarse particles is thrown away, fine dust is carried by coal gas stream, filters through filter bag 8, and the dust detention is on the outside surface of filter bag, the purified gas that passes filter bag comes together in the purified gas space of card more than 18, is responsible for through purified gas arm 19, glasses valve 20, Pneumatic butterfly valve 22 and purified gas then and flows out.When running resistance reached set(ting)value, program control instrument was controlled each cylinder and is carried out off-line ash-clearing successively.
When a cylinder carries out off-line ash-clearing, order about Pneumatic butterfly valve by program control instrument and be transformed into off-position, cut off the filtered airflow of this cylinder, make it off-line, the inside and outside pressure drop of all filter bags is zero in tin, and successively to each row filter bag carry out jetting deashing by pulse valve 11, branch gas tank 12 and the winding-up pipe 13 pulse jet mechanisms that form this moment.Owing to do not have flow of gas and butterfly valve turn-off time sufficiently long, so the dust under trembling can fully be deposited in the ash bucket.Thereby " dust is attached again " and deashing " inefficacy " problem have been solved.Owing on famine, purified gas arm, adorned butterfly valve and glasses valve, close the off-line maintenance that these valves just can carry out this cylinder in case of necessity, as: change bag operation etc.
Another feature of the present utility model is taken off lid on being and is changed bag mode and whole skeleton.The body construction of ZL95 2 17489.8 has manhole door, changes bag and must carry out in headroom is purified gas space high more than 2 meters, so bags long 6 meters times, skeleton must be made three joints.Fig. 1 illustrates single track lifting framework 15, electronic or bottle gouard moved by hands 16 and end socket 14, and after unloading flange bolt, end socket 14 can be sling, and whole purified gas space is exposed in the atmosphere.Skeleton 9 is made an integral body, and it is all convenient to make, load and unload; Close at two ends butterfly valve, glasses valve, cylindrical shell is opened to overhaul under the condition of end socket 14 and is changed bag operation behind the nitrogen emission coal gas, has fundamentally improved operating environment and ensures safety in production.
Low pressure fast-pulse spraying and blowing organ as shown in Figure 2.It is made up of submerged pulse valve 11, branch gas tank 12 and winding-up pipe 13.Submerged pulse valve 11 directly is fixed on and constitutes the total flood structure on the branch gas tank 12 of square-section; Winding-up pipe 13 engages with valve outlet 33 and seals with O shape circle 26; The winding-up pipe pack into and adjust after be welded on the branch gas tank.By the action of control main film 31, discharge compressed nitrogen to realize pulse jet.Because taked total flood structure and quick feedback throttle orifice 27, the winding-up bleed pressure can be reduced to 0.2-0.3MPa more than the 0.5MPa by routine, and move crisply, the winding-up time only is about 100ms (millisecond).
Known technology two buckets three valve dust removing systems have been adopted in order to prevent coal gas from overflowing.As shown in Figure 1, it is made up of big ash bucket 4, middle ash bucket 3 and an electronic impeller ash-valve 1; For preventing dust counter tide bonding, with the conical part increase steam coils heating of big ash bucket 4 and middle ash bucket 3, all the other cylindrical shells and pipeline all are incubated with adiabatic coating; For prevent that coal gas from going out when unloading ash manipulation, on big ash bucket, level gage is being housed, make its material of keeping certain height envelope, and on middle ash bucket, set up the pressure equilibrium respiratory siphon.These measures are used for guaranteeing safe and orderly ash discharge.Middle ash bucket erecting by overhang as shown in Figure 3, it is made up of threaded stud 34, hanger 35 and butterfly spring 36, has solved the problem of bringing because of thermal expansion.
The utility model has adopted the automatic stored program controlled of pressure reduction following feedback, and it is made up of differential pressure transmitter, the other operation box of machine, PLC programmable logic controller.In addition, broken bag automatic tester, temperature sensor etc. also have been equipped with.Two of differential pressure transmitter adopt that pressure point is located at famine, purified gas is responsible for, when pressure difference is that equipment operation total-resistance can be adjusted to fast sequential working when surpassing set(ting)value automatically; When being lower than set(ting)value, total-resistance can adjust to slow sequential working automatically.The method of the automatic follow-up control of this implementation total-resistance can make fly-ash separator be in optimal operational condition.
Implement needed other technology of the utility model patent and all adopt known technology.
Claims (6)
1. a blast furnace gas divides tube off-line ash-clearing pulse bag type dust collector, become by off-line ash-clearing, filtration, pulse jet, ash discharge and program control group, it is characterized in that: adopt branch tube off-line ash-clearing and off-line maintenance structure, back down end socket and whole skeleton, low pressure fast-pulse spraying and blowing organ, two buckets, three valves companion's hot type ash system and the program control cabinet of pressure reduction following feedback.
2. fly-ash separator according to claim 1, it is characterized in that: divide the branch tube number of tube off-line ash-clearing and off-line maintenance must not be less than 6, Hand-operated butterfly valve and manual glasses valve are housed on the raw gas arm, manual glasses valve and Pneumatic butterfly valve are housed on the purified gas arm, and Pneumatic butterfly valve is as the off-line ash-clearing valve.
3. fly-ash separator according to claim 1 is characterized in that: the mechanism of lifting end socket is equipped with at the top, and skeleton is integral solder, amerism.
4. fly-ash separator according to claim 1 is characterized in that: divide the winding-up pipe of gas tank and band convergent shape nozzle to form low pressure fast-pulse spraying and blowing organ by total flood low-resistance impulse valve, square-section.
5. fly-ash separator according to claim 1 is characterized in that: on two ash buckets that ash discharge is used the steam tracing coil pipe is housed, middle ash bucket is provided with erecting by overhang.
6. fly-ash separator according to claim 1 is characterized in that: form the program control cabinet of pressure reduction following feedback by differential pressure transmitter and special circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99207788 CN2383844Y (en) | 1999-04-14 | 1999-04-14 | Pulse bag-type duster for gas from blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99207788 CN2383844Y (en) | 1999-04-14 | 1999-04-14 | Pulse bag-type duster for gas from blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2383844Y true CN2383844Y (en) | 2000-06-21 |
Family
ID=34001687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99207788 Expired - Fee Related CN2383844Y (en) | 1999-04-14 | 1999-04-14 | Pulse bag-type duster for gas from blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2383844Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100551488C (en) * | 2006-04-29 | 2009-10-21 | 科林环保装备股份有限公司 | Wet bag type dust collector |
| CN101579593B (en) * | 2009-06-23 | 2011-06-29 | 国家粮食加工装备工程技术研究中心 | Injection system flip pulse dust collector |
| 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 |
| CN101260322B (en) * | 2006-08-29 | 2011-11-02 | 包头钢铁（集团）有限责任公司 | Blast furnace gas dust removing device and technique by dry method |
| CN102508432A (en) * | 2011-11-04 | 2012-06-20 | 国电南京自动化股份有限公司 | Automatic control steady-state undisturbed switching method for desulphurization booster fan |
| CN102974172A (en) * | 2012-12-25 | 2013-03-20 | 辽宁环宇环保技术有限公司 | Rotary pulse bag type dust remover for blast furnace gas |
| CN104745755A (en) * | 2015-04-29 | 2015-07-01 | 山东钢铁股份有限公司 | Online dust cleaning method for blast furnace gas dry dust removing system |
| CN113731051A (en) * | 2020-05-28 | 2021-12-03 | 中国石油化工股份有限公司 | Storehouse top formula pulse blowback dust remover |
-
1999
- 1999-04-14 CN CN 99207788 patent/CN2383844Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100551488C (en) * | 2006-04-29 | 2009-10-21 | 科林环保装备股份有限公司 | Wet bag type dust collector |
| CN101260322B (en) * | 2006-08-29 | 2011-11-02 | 包头钢铁（集团）有限责任公司 | Blast furnace gas dust removing device and technique by dry method |
| CN101579593B (en) * | 2009-06-23 | 2011-06-29 | 国家粮食加工装备工程技术研究中心 | Injection system flip pulse dust collector |
| 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 |
| CN102508432A (en) * | 2011-11-04 | 2012-06-20 | 国电南京自动化股份有限公司 | Automatic control steady-state undisturbed switching method for desulphurization booster fan |
| CN102508432B (en) * | 2011-11-04 | 2014-04-02 | 国电南京自动化股份有限公司 | Automatic control steady-state undisturbed switching method for desulphurization booster fan |
| CN102974172A (en) * | 2012-12-25 | 2013-03-20 | 辽宁环宇环保技术有限公司 | Rotary pulse bag type dust remover for blast furnace gas |
| CN104745755A (en) * | 2015-04-29 | 2015-07-01 | 山东钢铁股份有限公司 | Online dust cleaning method for blast furnace gas dry dust removing system |
| CN113731051A (en) * | 2020-05-28 | 2021-12-03 | 中国石油化工股份有限公司 | Storehouse top formula pulse blowback dust remover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Kelin Environmental Protection Engineering Technology Inst., Beijing Document name: payment instructions |
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| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Kelin Environmental Protection Engineering Technology Inst., Beijing Document name: Notice of termination |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |