WO2006119681A1 - Dispositif d’elimination des cendres a sac par soufflage a impulsion inversee - Google Patents

Dispositif d’elimination des cendres a sac par soufflage a impulsion inversee Download PDF

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Publication number
WO2006119681A1
WO2006119681A1 PCT/CN2005/001405 CN2005001405W WO2006119681A1 WO 2006119681 A1 WO2006119681 A1 WO 2006119681A1 CN 2005001405 W CN2005001405 W CN 2005001405W WO 2006119681 A1 WO2006119681 A1 WO 2006119681A1
Authority
WO
WIPO (PCT)
Prior art keywords
bag
backflushing
dust
stage
box
Prior art date
Application number
PCT/CN2005/001405
Other languages
English (en)
Chinese (zh)
Inventor
Chaosheng Yao
Xinmin Wei
Dongsheng Huang
Zhongde Yi
Zhongquan Liu
Rongen Wang
Original Assignee
Metallurgical Design Institute Of Shandong Province
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Metallurgical Design Institute Of Shandong Province filed Critical Metallurgical Design Institute Of Shandong Province
Publication of WO2006119681A1 publication Critical patent/WO2006119681A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/04—Cleaning filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
    • B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/31—Other construction details
    • B01D2201/313—Means for protecting the filter from the incoming fluid, e.g. shields

Definitions

  • the invention relates to a bag dust removing device, in particular to a bag pulse back blowing dust removing device which is mostly used for dry dust removal of blast furnace coal gas in the steel industry.
  • the bag dust removal device is widely used in various gas medium dust removal or solid and gas isolation processes, especially in the technical field of dry blast furnace gas dust removal.
  • the bag dust removing device is composed of a box body, a dust bag, a partition plate, a pulse back blowing device, an air inlet/outlet port, a ash bucket, an ash discharge, and an ash conveying structure.
  • the dust-containing gas enters the tank from the air inlet. After filtering, the gas enters the dust bag, passes through the net gas collection pipe, enters the net gas collecting box unit of the box, and then passes through the net gas outlet. Output box.
  • the pulse backflushing gas enters from the backflushing main pipe, and the bag is subjected to pulse backflushing through the back blowing branch pipe provided at the mouth of the dust removing cloth bag, thereby backflushing the dust on the bag, and the dust is discharged from the ash outlet through the ash hopper and the ash discharging device. Box.
  • the existing bag dust removal device has a diameter of generally 3.5 meters, the bag length is generally 6 meters and the diameter is 130 mm, and 192 dust bag bags are arranged in the box. Due to the backflush efficiency of the bag pulse backflush system, the effective length of the bag cannot be increased.
  • the dust removal cabinet of the whole dust removal system has a large number, a large occupation area and a high cost.
  • the object of the present invention is to provide an efficient multi-stage bag pulse backflushing dust removing device, which can meet the requirements for cleaning the long bag, thereby improving the dust removing area of the bag and the box, improving the dust removing efficiency, and reducing Land occupation, saving investment.
  • the bag pulse backflushing dust removing device of the invention comprises: a box body, wherein the plurality of dust removing boxes form an entire dust removing system; the partition plate is placed in the box body, and the upper part of the box body is separated from a gas collecting box unit; the gas collecting box unit The dust-containing gas enters and collects in the dust-removing bag, and then is collected and discharged through the net gas outlet; the dust-removing bag is used for cleaning and dusting the dust attached to the dust bag, and the length is 8m or more; Pulse backflushing system and secondary bag pulse backflushing system; dusty gas inlet port, which is arranged in the lower part of the box; net gas outlet port, placed in the upper part of the gas collecting box of the box body.
  • the first-stage bag pulse backflushing system has a first-stage backflush gas inlet, a first-stage backflushing pipe and a The stage backflush pipe branch, the secondary bag pulse backflushing system has a secondary back blowing main pipe and a secondary back blowing branch pipe.
  • the port of the primary pulse backflush pipe extends to the position of the dust bag.
  • the secondary pulse back-blow pipe extends through the first-stage back-blowing pipe and the first-stage back-blow pipe into the dust bag, and reaches the depth of 1/2 of the length of the dust bag.
  • the two-stage back-blow pipe and the first-stage back-blow pipe are concentric. .
  • a pulse backflushing system of 3 or more stages can be set, and the total length of the back blowing branch pipes of the second stage or above is a multiple of 6 m.
  • the secondary back-pressure branch pipe is composed of multiple sections, each section is l-2m in length, and is connected by a joint.
  • the two-stage back-blowing point is the inlet position of the dust bag and the middle of the bag, that is, the back-blow points of each stage are located at the upper part of each stage, and the back-blowing back-blow point of the first stage is blown back at the bag entrance.
  • the back blowing point is in the middle of the bag.
  • One of the two-stage backflushing system first performs a first-stage backflushing, then a two-stage backflushing, or a two-stage backflushing, and then a first-stage backflushing, and the two backflushing methods may overlap slightly.
  • the invention effectively improves the dust removal area and length of the dust bag, and improves the dust removal of a single box.
  • Figure 1 is a structural diagram of a commonly used bag dust removal device
  • Figure 2 is a structural view of the bag pulse backflushing device of the present invention.
  • Figure 3 is an enlarged view of the I portion of Figure 2;
  • Figure 4 is an enlarged view of a portion II of Figure 2;
  • Fig. 5 is an enlarged view of a portion III of Fig. 2;
  • Bag dust removal device box 10. Gas collection box
  • the bag pulse backflushing dust removing device comprises a box 9, a partition 5, a dust bag 6, a supporting frame 7, a gas collecting box 10, a first-stage backflushing system , a two-stage backflush system, a dust-containing gas inlet 19, a net gas outlet 20, and the like.
  • the primary backflushing system consists of a primary backflush gas inlet 12, a primary backflushing manifold 3, and a primary backflush manifold 4.
  • the secondary backflushing system consists of a secondary backflush gas inlet 11, a secondary backflushing manifold 1, and a secondary backflush manifold 2.
  • the secondary back-blow pipe 2 passes through the first-stage back-blow pipe 3 and the first-stage back-blow pipe 4 and extends into the dust bag, and extends into a depth of 1/2 of the length of the dust bag, the second-stage back-blow pipe 2 and the first-stage
  • the back-blowing branch pipe 4 is concentric.
  • the secondary back-pressure branch pipe 2 consists of several sections, each of which is l-2m in length and can be threaded through the union.
  • the secondary back-blowing branch pipe 2 is connected to the secondary back-flushing main pipe 1 through the lower flange 16, and the upper flange 16 has an upper flange and a flange cover 13 at corresponding portions.
  • the threaded union 8 on the secondary back-pressure branch pipe 2 is unloaded, the lower flange 16, the upper cover 13, the casing flange 17 are opened, and the secondary back-pressure branch pipe 2 can be passed through the secondary back-blowing pipe 1
  • the lower short tube 15 and the upper short tube 14 are withdrawn.
  • the inner diameter of the upper short tube 14 and the lower short tube 15 is larger than the outer diameter of the sleeve flange 17, so that the secondary back-pressure branch tube 2 is withdrawn.
  • the first-stage back-blowing pipe 3 can be connected by a flange, and the second-stage back-blowing pipe inlet enters the bag dust removing device box 9 and the second-stage back-blowing pipe 1 can also pass the method.
  • Lan is connected. It is convenient to disassemble the primary blowback main pipe 3 and the secondary backflushing main pipe 1 in the bag dust removing device casing (9).
  • the secondary back-pressure branch pipe 2 passes through the first-stage backflush pipe 3 and is provided with a casing 18 and a casing flange 17, and the secondary back-pressure branch pipe 2 also passes through the casing 18 and the casing flange 17. After installation, the casing flange 17 and the secondary back-pressure branch pipe 2 are welded to seal the gas.
  • the gas dust removal purification process is: the dust-containing gas enters the bag dust removing device through the dust-containing gas inlet 19
  • the box body 9 is filtered by the dust bag 6 to enter the gas collection box 10, and then enters the net gas main pipe through the clean gas outlet 20.
  • Each of the dust bag bags 6 in the bag dust removing device case 9 has a length of 8-12 m, and each of the dust removing cloth bags 6 in a bag dust removing device case 9 is cleaned by a two-stage pulse back blowing method, and each dust removing bag 6 is cleaned.
  • the backflushing point of the two-stage backflushing system is the inlet position of the dust bag and the middle of the bag, that is, the back of each stage is located at the upper part of each stage, that is, the back blowing point of the first stage backflushing system is at the entrance of the bag.
  • the backflush point of the secondary backflush system is in the middle of the bag.
  • the bag is pulsed backflushing, except that the first and second stage backflushing systems can be carried out at the same time, it is better to carry out the first stage backflushing, then the second stage backflushing, or the first stage backflushing, and then one The level of backflushing, the two backflushing methods can be slightly overlapped.
  • the present invention is not limited to the above embodiment, and may be various modified embodiments.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Blast Furnaces (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

L’invention concerne un type de dispositif d’élimination des cendres à sac par soufflage à impulsion inversée comprenant un boîtier, un sac d’élimination des cendres, une cloison, un collecteur de gaz et un premier et un second systèmes de soufflage à impulsion inversée, la longueur du sac d’élimination des cendres étant comprise entre 8 et 12 m. Dans le premier système de soufflage à impulsion inversée, l’orifice du premier conduit de distribution est disposé à l’entrée du sac et, dans le second système, l’orifice du second conduit pénètre à l’intérieur du sac. Le traitement du sac par deux opérations d’élimination des cendres par soufflage à impulsion inversée permet d’améliorer l’efficacité de l’élimination des cendres, d’accroître la surface de filtration utile du sac, d’augmenter le rendement du boîtier et de réduire l’encombrement du dispositif global.
PCT/CN2005/001405 2005-05-08 2005-09-05 Dispositif d’elimination des cendres a sac par soufflage a impulsion inversee WO2006119681A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200510068362.5 2005-05-08
CNB2005100683625A CN100490937C (zh) 2005-05-08 2005-05-08 布袋脉冲反吹除尘装置

Publications (1)

Publication Number Publication Date
WO2006119681A1 true WO2006119681A1 (fr) 2006-11-16

Family

ID=37296751

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2005/001405 WO2006119681A1 (fr) 2005-05-08 2005-09-05 Dispositif d’elimination des cendres a sac par soufflage a impulsion inversee

Country Status (6)

Country Link
CN (1) CN100490937C (fr)
MY (1) MY144254A (fr)
RU (1) RU2355464C2 (fr)
TR (1) TR200700789T1 (fr)
UA (1) UA90478C2 (fr)
WO (1) WO2006119681A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105148633A (zh) * 2015-10-14 2015-12-16 成都市智联环境保护设备有限公司 一种具有排料功能的全动多级滤袋除尘器
CN108742315A (zh) * 2018-07-03 2018-11-06 苏州大西力环保科技有限公司 一种脉冲反吹型二级过滤工业吸尘器
CN110016530A (zh) * 2019-05-06 2019-07-16 中冶赛迪工程技术股份有限公司 一种高炉煤气全干法净化系统及其工艺流程

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5665297B2 (ja) * 2009-09-30 2015-02-04 三菱重工業株式会社 煤塵除去装置
CN102814085A (zh) * 2011-06-06 2012-12-12 李军 脉冲布袋除尘器喷吹法及其装置
CN104667657A (zh) * 2015-03-11 2015-06-03 张家港市双龙氧化锌厂 一种粉尘回收装置
CN105833617A (zh) * 2016-05-20 2016-08-10 宁夏三瑞机械环保设备有限公司 锅炉除尘器预警装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926595A (en) * 1973-01-22 1975-12-16 Svenska Flaektfabriken Ab Dust filter apparatus
US4336035A (en) * 1979-03-12 1982-06-22 Wheelabrator-Frye Inc. Dust collector and filter bags therefor
JPH10309421A (ja) * 1997-05-12 1998-11-24 Nippon Spindle Mfg Co Ltd バッグフイルタ式集塵装置
CN1563286A (zh) * 2004-03-26 2005-01-12 承德新新钒钛股份有限公司 高炉煤气袋式除尘的多段脉冲清灰装置及其方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926595A (en) * 1973-01-22 1975-12-16 Svenska Flaektfabriken Ab Dust filter apparatus
US4336035A (en) * 1979-03-12 1982-06-22 Wheelabrator-Frye Inc. Dust collector and filter bags therefor
JPH10309421A (ja) * 1997-05-12 1998-11-24 Nippon Spindle Mfg Co Ltd バッグフイルタ式集塵装置
CN1563286A (zh) * 2004-03-26 2005-01-12 承德新新钒钛股份有限公司 高炉煤气袋式除尘的多段脉冲清灰装置及其方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105148633A (zh) * 2015-10-14 2015-12-16 成都市智联环境保护设备有限公司 一种具有排料功能的全动多级滤袋除尘器
CN108742315A (zh) * 2018-07-03 2018-11-06 苏州大西力环保科技有限公司 一种脉冲反吹型二级过滤工业吸尘器
CN110016530A (zh) * 2019-05-06 2019-07-16 中冶赛迪工程技术股份有限公司 一种高炉煤气全干法净化系统及其工艺流程
CN110016530B (zh) * 2019-05-06 2024-02-23 中冶赛迪工程技术股份有限公司 一种高炉煤气全干法净化系统及其工艺流程

Also Published As

Publication number Publication date
CN100490937C (zh) 2009-05-27
RU2007104245A (ru) 2008-09-27
CN1857763A (zh) 2006-11-08
RU2355464C2 (ru) 2009-05-20
MY144254A (en) 2011-08-29
UA90478C2 (ru) 2010-05-11
TR200700789T1 (tr) 2007-04-24

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