WO2021073082A1 - High-temperature membrane dust removal equipment having gas vibration assisted dust cleaning function, and operation method - Google Patents

High-temperature membrane dust removal equipment having gas vibration assisted dust cleaning function, and operation method Download PDF

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Publication number
WO2021073082A1
WO2021073082A1 PCT/CN2020/090541 CN2020090541W WO2021073082A1 WO 2021073082 A1 WO2021073082 A1 WO 2021073082A1 CN 2020090541 W CN2020090541 W CN 2020090541W WO 2021073082 A1 WO2021073082 A1 WO 2021073082A1
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Prior art keywords
gas
rapping
dust removal
dust
membrane element
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PCT/CN2020/090541
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French (fr)
Chinese (zh)
Inventor
仲兆祥
武军伟
邢卫红
张峰
徐超男
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江苏久朗高科技股份有限公司
南京工业大学
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Publication of WO2021073082A1 publication Critical patent/WO2021073082A1/en

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    • 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
    • B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
    • B01D46/543—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
    • 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
    • B01D46/74—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element
    • B01D46/76—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving vibrations

Definitions

  • the invention belongs to the technical field of gas high-temperature dust removal, and specifically relates to a high-temperature film dust removal device and an operation method for auxiliary dust removal by gas rapping.
  • high-temperature dust-containing gases are characterized by high temperature, generally greater than 260°C, and large dust content, generally greater than 10g/ m 3 , containing corrosive gas and flammable and explosive gas, such as gas containing hydrogen, hydrogen sulfide, sulfur dioxide, hydrogen chloride and other gases.
  • Ordinary dust removal methods are difficult to effectively capture the dust in the high-temperature gas.
  • the conventional dust removal medium is easy to be corroded, and the filter channels are easy to be blocked, resulting in increased equipment operation resistance.
  • Membrane dust removal equipment is a new type of dust removal equipment developed in recent years. It uses the double-layer structure of membrane materials, large porosity and small pore size to achieve effective dust retention at high temperatures.
  • the dust-removing membrane elements used when facing high-temperature dust-containing gas are mostly inorganic materials.
  • the membrane material is made of a tubular membrane with one end sealed, and it is installed on the flower plate of the equipment in a hanging candle style.
  • the membrane material is an inorganic rigid material
  • the membrane material does not shake, and the dust on the surface of the membrane material is not easy to remove by the action of the reverse airflow alone.
  • the membrane material has poor regeneration ability. After a period of operation, a large amount of dust will adhere to the surface of the membrane material, which affects the dust removal efficiency of the equipment and increases the operation resistance of the equipment. After a period of time, the equipment needs to be opened for manual cleaning, which wastes human resources and affects the normal industry. Production, causing unnecessary losses.
  • the present invention develops a gas rapping auxiliary dust removal equipment and operation method of high temperature film method.
  • the gas rapping auxiliary dust removal method can effectively remove the dust on the surface of the dust removal film element and remove the dust film.
  • the element is regenerated, the gas flux of the dust removal membrane element is restored, and the operation resistance of the equipment is reduced.
  • a high-temperature film dust removal device for gas rapping auxiliary dust removal including an upper box body, a reverse injection system, a gas rapping auxiliary dust removal system, a flower plate, a middle box body, a dust removal membrane element, an ash hopper, a support, and
  • the box body has a clean gas outlet
  • the flower plate is located between the upper box body and the middle box body
  • the flower plate is arranged with flower plate holes
  • the reverse injection system includes the reverse injection air bag, the injection main pipe, and the injection branch pipe , Reverse blowing pulse valve, the reverse blowing air bag is connected to the blowing main pipe through the pulse valve, the blowing branch pipe is installed on the blowing main pipe, and the air outlet is vertically aligned downward to the center of the flower plate hole;
  • the gas rapping auxiliary cleaning system includes a rapping gas bag, a rapping gas main pipe, a rapping gas branch pipe, a rapping air device, and a rapping pulse valve.
  • the rapping gas main pipe is located on the upper part of the flower plate, and the rapping air device is spring steel. It is made into a trumpet shape. The upper part is the large diameter end, the narrowest position in the middle is the neck, and the lower part is the small diameter end. There is an expansion joint along the bus bar. The diameter of the large diameter end is larger than the diameter of the flower plate hole. The neck diameter and dust removal The outer diameter of the membrane element is the same.
  • the large-diameter end of the rapping air release device is welded to the lower part of the flower plate hole, and the center is aligned with the center of the flower plate hole.
  • the cavity enclosed by the flower plate, dust removal membrane element, and rapping air release device is the rapping gas cavity.
  • the rapping gas bag is connected to the rapping gas main pipe through the rapping pulse valve, one end of the rapping gas branch pipe is connected to the rapping gas main pipe, and the other end is connected to the rapping gas cavity;
  • the dust removal membrane element is located in the middle box, the bottom is the blind end, the top is installed in the flower plate hole of the flower plate, the upper part passes through the rapping air release device, the outer wall of the dust removal film element is closely attached to the neck of the rapping air release device, and the ash bucket Located in the lower part of the middle box, the ash hopper has a dusty gas inlet.
  • the dust removal membrane element is a porous material, and its material is a composite material of metal, intermetallic compound, ceramic or cermet, wherein the metal material is stainless steel, nickel, titanium, and the intermetallic compound material is titanium-aluminum material, iron-aluminum material , Nickel-aluminum materials, ceramic materials are alumina, zirconia, silicon carbide or silica materials.
  • the large-diameter end 3041 of the further rapping and air outlet device 304 is connected to the bottom of the flower plate 4 by welding.
  • An operation method of gas rapping-assisted dust removal high-temperature film dust removal equipment including the following steps:
  • Step 1 High-temperature dust-containing gas enters the dust removal equipment through the dust-containing gas inlet, the dust is trapped by the dust removal membrane element, the high temperature gas passes through the dust removal membrane element, and the dust-removed gas enters the upper box and is discharged through the clean gas outlet;
  • Step 2 Timing reverse pulse blowing to clean dust, after the equipment runs for a certain period of time, the compressed gas in the reverse blowing air bag is used to perform reverse pulse blowing on the dust removal membrane element;
  • Step 3 Timing gas pulse rapping to assist dust removal. After the equipment runs for a certain period of time, use the compressed gas in the rapping gas bag to perform gas pulse rapping to assist dust removal on the outer surface of the dust removal membrane element;
  • Step 4 Reverse pulse jet ash cleaning and gas pulse rapping assisted ash cleaning are performed alternately.
  • the time interval of reverse pulse blowing and ash cleaning is 60-120min, the blowing pressure is 0.3-0.6Mpa, and the blowing time is 0.1-0.5s.
  • the gas pulse rapping auxiliary cleaning time interval is 60-120 min
  • the gas pulse rapping pressure is 0.5-1.5 MPa
  • the gas pulse rapping time is 0.1-0.3s.
  • the invention uses gas rapping to assist dust removal to remove the dust attached to the surface of the dust removal membrane element, and uses spring steel to make a rapping air release device.
  • the flower plate, the dust removal film element, and the rapping air outlet device surround the rapping gas cavity to remove dust.
  • the neck of the membrane element is in close contact with the rapping air outlet device, and compressed gas is pulsed into the rapping gas cavity. Under the action of the gas pressure, the spring steel neck expands, and a gap appears between the neck and the dust removal membrane element, and the compressed gas flows from this gap.
  • the horn-shaped air rapping device can divert the ejected gas so that the gas can vibrate the dust along the surface of the film.
  • the rapping air device is equipped with expansion joints, which can avoid the problem of expansion and deformation at high temperatures.
  • Gas rapping assisted dust cleaning and pulsed backflushing are performed alternately. Pulsed backflushing can take part of the dust that enters the internal pores of the dust removal membrane element through the effect of reverse airflow. Gas rapping assisted dust cleaning can effectively remove the surface of the dust removal membrane element. Dust, realize the effective regeneration of dust removal membrane elements, reduce equipment operation resistance, and improve equipment dust removal efficiency.
  • the gas rapping auxiliary dust removal device of the present invention can effectively remove the dust on the surface of the dust removal membrane element, especially the surface of the inorganic rigid film material in the high temperature dust removal equipment has a poor cleaning effect, which can achieve ideal cleaning with pulse back blowing. Regeneration effect. And it can be directly installed on the flower board, which is simple and easy.
  • Figure 1 is a schematic diagram of the gas rapping auxiliary dust removal high-temperature film method of dust removal equipment according to the present invention
  • Figure 2 is a schematic diagram of the gas rapping auxiliary cleaning system and the reverse injection system according to the present invention
  • Fig. 3 is a schematic diagram of the installation of the dust removal membrane element and the rapping air release device according to the present invention
  • Fig. 4 is a schematic diagram of the structure of the rapping and air outlet device according to the present invention.
  • 1-upper box 2-reverse injection system, 3-gas rapping auxiliary cleaning system, 4-flower board, 5-middle box, 6-dust removal membrane element, 7-ash hopper, 8- Support, 101-clean gas outlet, 201-reverse injection gas bag, 202-injection main pipe, 203-injection branch pipe, 204-back-blowing pulse valve, 301-rapping gas bag, 302-rapping gas main pipe, 303 -Rapping gas branch pipe, 304- Rapping air device, 305- Rapping pulse valve, 3041-large diameter end, 3042-neck, 3043-small diameter end, 3044-rapping gas cavity, 3045-expansion joint, 701- Inlet for dusty gas.
  • a high-temperature film dust removal equipment for gas rapping auxiliary dust removal including an upper box body 1, a reverse injection system 2, a gas rapping auxiliary dust removal system 3, a flower plate 4, a middle box body 5, and a dust removal film element 6, Ash hopper 7, support 8, upper box body 1 is provided with clean gas outlet 101, flower plate 4 is located between upper box body 1 and middle box body 5, flower plate 4 is arranged with flower plate holes 401, reverse injection system 2 Including the reverse injection air bag 201, the injection main pipe 202, the injection branch pipe 203, and the reverse injection pulse valve 204.
  • the reverse injection air bag 201 is connected to the injection main pipe 202 through the pulse valve 204, and the injection branch pipe 203 is installed in On the blowing main pipe 202, the air outlet is vertically aligned with the center of the flower plate hole 401;
  • the gas rapping auxiliary cleaning system 3 includes a rapping gas bag 301, a rapping gas main pipe 302, a rapping gas branch pipe 303, and a rapping gas outlet device 304 , Rapping pulse valve 305, the rapping gas main pipe 302 is located on the upper part of the flower plate 4, the rapping air outlet device 304 is made of spring steel and has a trumpet shape, the upper part is the large-diameter end 3041, and the narrowest position in the middle is the neck 3042 , The lower part is the small-diameter end 3043, and there is an expansion joint 3045 along the direction of the bus bar.
  • the large-diameter end 3041 has a diameter larger than the diameter of the flower plate hole 401, and the diameter of the neck 3041 is the same as the outer diameter of the dust removal membrane element 6.
  • the end 3041 is welded to the lower part of the flower plate hole 401, and the center is aligned with the center of the flower plate hole 401.
  • the cavity enclosed by the flower plate 4, the dust removal membrane element 6, and the rapping air outlet 304 is the rapping gas cavity 3044.
  • the rapping air bag 301 passes through the vibration
  • the pulse valve 305 is connected to the rapping gas main pipe 302.
  • One end of the rapping gas branch pipe 303 is connected to the rapping gas main pipe 302, and the other end is connected to the rapping gas chamber 3044; the dust removal membrane element 6 is located in the middle box 5, and the bottom is a blind end ,
  • the top is installed in the flower plate hole 401 of the flower plate 4, the upper part passes through the rapping air outlet device 304, the outer wall of the dust removal membrane element 6 is closely attached to the neck 3042 of the rapping air device 304, and the ash hopper 7 is located in the middle box 5.
  • the ash hopper 7 has a dust-containing gas inlet 701.
  • the number of the blowing branch pipe 203 connected to the blowing main pipe 202 is one, and the distance between the air outlet end of the blowing branch pipe 203 and the top of the dust removal membrane element 6 is 2 cm.
  • the number of the rapping gas branch pipe 303 connected to the rapping gas main pipe 302 is one.
  • the dust removal membrane element is made of porous material, and its material is stainless steel.
  • the large-diameter end 3041 of the rapping air outlet device 304 is connected to the bottom of the flower plate 4 by welding.
  • An operation method of gas rapping-assisted dust removal high-temperature film dust removal equipment including the following steps:
  • Step 1 The high-temperature dust-containing gas enters the dust removal equipment through the dust-containing gas inlet 701, the dust is trapped by the dust removal membrane element 6, the high temperature gas passes through the dust removal membrane element 6, the dust-removed gas enters the upper box 1, and is discharged through the clean gas outlet 101 ;
  • Step 3 Timing gas pulse rapping to assist dust removal. After the equipment runs for a certain period of time, use the compressed gas in the rapping gas bag 301 to perform gas pulse rapping to assist dust removal on the outer surface of the dust removal membrane element;
  • Step 4 Reverse pulse jet ash cleaning and gas pulse rapping assisted ash cleaning are performed alternately.
  • step 1 the speed of the high-temperature gas passing through the dust removal membrane element 6 is 0.5-m/min.
  • step 2 the interval of reverse pulse blowing and ash cleaning is 120min, the blowing pressure is 0.3MPa, and the blowing time is 0.5s.
  • step 3 the gas pulse rapping auxiliary cleaning time interval is 120min, the gas pulse rapping pressure is 1.5MPa, and the gas pulse rapping time is 0.1s.
  • a high-temperature film dust removal equipment for gas rapping auxiliary dust removal including an upper box body 1, a reverse injection system 2, a gas rapping auxiliary dust removal system 3, a flower plate 4, a middle box body 5, and a dust removal film element 6, Ash hopper 7, support 8, upper box body 1 is provided with clean gas outlet 101, flower plate 4 is located between upper box body 1 and middle box body 5, flower plate 4 is arranged with flower plate holes 401, reverse injection system 2 Including the reverse injection air bag 201, the injection main pipe 202, the injection branch pipe 203, and the reverse injection pulse valve 204.
  • the reverse injection air bag 201 is connected to the injection main pipe 202 through the pulse valve 204, and the injection branch pipe 203 is installed in On the blowing main pipe 202, the air outlet is vertically aligned with the center of the flower plate hole 401;
  • the gas rapping auxiliary cleaning system 3 includes a rapping gas bag 301, a rapping gas main pipe 302, a rapping gas branch pipe 303, and a rapping gas outlet device 304 , Rapping pulse valve 305, the rapping gas main pipe 302 is located on the upper part of the flower plate 4, the rapping air outlet device 304 is made of spring steel and has a trumpet shape, the upper part is the large-diameter end 3041, and the narrowest position in the middle is the neck 3042 , The lower part is the small-diameter end 3043, and there is an expansion joint 3045 along the direction of the bus bar.
  • One end of the rapping gas branch pipe 303 is connected to the rapping gas main pipe 302, and the other end is connected to the rapping gas chamber 3044; the dust removal membrane element 6 is located in the middle box 5, and the bottom is a blind end ,
  • the top is installed in the flower plate hole 401 of the flower plate 4, the upper part passes through the rapping air outlet device 304, the outer wall of the dust removal membrane element 6 is closely attached to the neck 3042 of the rapping air device 304, and the ash hopper 7 is located in the middle box 5.
  • the ash hopper 7 has a dust-containing gas inlet 701.
  • the number of blowing branch pipes 203 connected to the blowing main pipe 202 is 10, and the distance between the air outlet end of the blowing branch pipe 203 and the top of the dust removal membrane element 6 is 20 cm.
  • the number of rapping gas branch pipes 303 connected to the rapping gas main pipe 302 is ten.
  • the dust removal membrane element is a porous material, and its material is a titanium-aluminum intermetallic compound material.
  • the large-diameter end 3041 of the rapping air outlet device 304 is connected to the bottom of the flower plate 4 by welding.
  • An operation method of gas rapping-assisted dust removal high-temperature film dust removal equipment including the following steps:
  • Step 1 The high-temperature dust-containing gas enters the dust removal equipment through the dust-containing gas inlet 701, the dust is trapped by the dust removal membrane element 6, the high temperature gas passes through the dust removal membrane element 6, the dust-removed gas enters the upper box 1, and is discharged through the clean gas outlet 101 ;
  • Step 3 Timing gas pulse rapping to assist dust removal. After the equipment runs for a certain period of time, use the compressed gas in the rapping gas bag 301 to perform gas pulse rapping to assist dust removal on the outer surface of the dust removal membrane element;
  • step 1 the speed of the high-temperature gas passing through the dust removal membrane element 6 is 2.5 m/min.
  • One end of the rapping gas branch pipe 303 is connected to the rapping gas main pipe 302, and the other end is connected to the rapping gas chamber 3044; the dust removal membrane element 6 is located in the middle box 5, and the bottom is a blind end ,
  • the top is installed in the flower plate hole 401 of the flower plate 4, the upper part passes through the rapping air outlet device 304, the outer wall of the dust removal membrane element 6 is closely attached to the neck 3042 of the rapping air device 304, and the ash hopper 7 is located in the middle box 5.
  • the ash hopper 7 has a dust-containing gas inlet 701.
  • the dust removal membrane element is made of porous material, and its material is silicon carbide material.
  • the large-diameter end 3041 of the rapping air outlet device 304 is connected to the bottom of the flower plate 4 by welding.
  • An operation method of gas rapping-assisted dust removal high-temperature film dust removal equipment including the following steps:
  • Step 1 The high-temperature dust-containing gas enters the dust removal equipment through the dust-containing gas inlet 701, the dust is trapped by the dust removal membrane element 6, the high temperature gas passes through the dust removal membrane element 6, the dust-removed gas enters the upper box 1, and is discharged through the clean gas outlet 101 ;
  • Step 3 Timing gas pulse rapping to assist dust removal. After the equipment runs for a certain period of time, use the compressed gas in the rapping gas bag 301 to perform gas pulse rapping to assist dust removal on the outer surface of the dust removal membrane element;
  • Step 4 Reverse pulse jet ash cleaning and gas pulse rapping assisted ash cleaning are performed alternately.
  • step 1 the speed of the high-temperature gas passing through the dust removal membrane element 6 is 1 m/min.
  • step 2 the time interval of reverse pulse blowing and ash cleaning is 80min, the blowing pressure is 0.56MPa, and the blowing time is 0.3s.
  • step 3 the gas pulse rapping auxiliary cleaning time interval is 70 minutes, the gas pulse rapping pressure is 1 MPa, and the gas pulse rapping time is 0.2s.

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  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

High-temperature membrane dust removal equipment having a gas vibration assisted dust cleaning function, comprising an upper box, a reverse jet system, a gas vibration assisted dust cleaning system, a tube sheet, a middle box, a dust removal membrane element, and a dust hopper. The gas vibration assisted dust cleaning system comprises a vibration gas bag, a vibration gas main pipe, a vibration gas branch pipe, a vibration gas outlet device, and a vibration pulse valve. The vibration gas outlet device is made of spring steel and is horn-shaped, has the upper part being a large-diameter end, the narrowest middle position being a neck, and the lower part being a small-diameter end, and is provided with an expansion joint along the generatrix direction. The diameter of the large-diameter end is larger than that of a tube sheet hole, and the diameter of the neck is the same as the outer diameter of the dust removal membrane element. When the equipment operates, reverse pulse-jet dust cleaning and gas pulse vibration assisted dust cleaning are carried out alternately. The high-temperature membrane dust removal equipment having a gas vibration assisted dust cleaning function provided by the present invention can effectively clean dust on the surface of a dust removal membrane element, thereby recovering the dust removal membrane element, restoring the gas flux of the dust removal membrane element, and reducing the equipment operation resistance.

Description

一种气体振打辅助清灰高温膜法除尘设备及操作方法Dust removal equipment and operation method of gas rapping auxiliary dust removal high-temperature film method 技术领域Technical field
本发明属于气体高温除尘技术领域，具体涉及一种气体振打辅助清灰高温膜法除尘设备及操作方法。The invention belongs to the technical field of gas high-temperature dust removal, and specifically relates to a high-temperature film dust removal device and an operation method for auxiliary dust removal by gas rapping.
背景技术Background technique
目前，许多行业如冶金、发电、陶瓷、冶炼及化工行业等，每年都会产生大量高温含尘气体，这些高温含尘气体特点为温度高，一般大于260℃，含尘量大，一般大于10g/m 3，含有腐蚀性气体及易燃易爆气体，如气体中含有氢气、硫化氢、二氧化硫、氯化氢等气体。普通的除尘方法很难对高温气体中的粉尘进行有效捕捉，常规除尘介质易被腐蚀，且过滤孔道易被堵塞，造成设备运行阻力增加。膜法除尘设备是近年来发展起来的新型除尘设备，利用膜材料双层结构，孔隙率大、孔径小的特点实现高温下粉尘的有效截留。在面向高温含尘气体时所使用的除尘膜元件多为无机材料，膜材料做成一端密封的管式膜，采用挂烛式安装于设备的花板上。 At present, many industries such as metallurgy, power generation, ceramics, smelting and chemical industries produce a large amount of high-temperature dust-containing gas every year. These high-temperature dust-containing gases are characterized by high temperature, generally greater than 260℃, and large dust content, generally greater than 10g/ m 3 , containing corrosive gas and flammable and explosive gas, such as gas containing hydrogen, hydrogen sulfide, sulfur dioxide, hydrogen chloride and other gases. Ordinary dust removal methods are difficult to effectively capture the dust in the high-temperature gas. The conventional dust removal medium is easy to be corroded, and the filter channels are easy to be blocked, resulting in increased equipment operation resistance. Membrane dust removal equipment is a new type of dust removal equipment developed in recent years. It uses the double-layer structure of membrane materials, large porosity and small pore size to achieve effective dust retention at high temperatures. The dust-removing membrane elements used when facing high-temperature dust-containing gas are mostly inorganic materials. The membrane material is made of a tubular membrane with one end sealed, and it is installed on the flower plate of the equipment in a hanging candle style.
但是高温膜法除尘设备运行时，由于膜材料为无机刚性材料，进行反向喷吹清除膜材料表面的粉尘时，膜材料无抖动，单纯靠反向气流的作用膜材料表面的粉尘不容易清除，膜材料的再生能力差，运行一段时间后膜材料表面会附着大量粉尘，影响设备的除尘效率，增加了设备的运行阻力，一段时间之后需要打开设备进行人工清理，浪费人力资源，影响工业正常生产，造成不必要的损失。However, when the high-temperature membrane dust removal equipment is running, since the membrane material is an inorganic rigid material, when the dust on the surface of the membrane material is removed by reverse blowing, the membrane material does not shake, and the dust on the surface of the membrane material is not easy to remove by the action of the reverse airflow alone. , The membrane material has poor regeneration ability. After a period of operation, a large amount of dust will adhere to the surface of the membrane material, which affects the dust removal efficiency of the equipment and increases the operation resistance of the equipment. After a period of time, the equipment needs to be opened for manual cleaning, which wastes human resources and affects the normal industry. Production, causing unnecessary losses.
发明内容Summary of the invention
本发明针对以上技术问题，开发了一种气体振打辅助清灰高温膜法除尘设备及操作方法，采用气体振打辅助清灰的方式可有效对除尘膜元件表面的粉尘进行清除，对除尘膜元件进行再生，恢复除尘膜元件的气体通量，降低设备运行阻力。In view of the above technical problems, the present invention develops a gas rapping auxiliary dust removal equipment and operation method of high temperature film method. The gas rapping auxiliary dust removal method can effectively remove the dust on the surface of the dust removal film element and remove the dust film. The element is regenerated, the gas flux of the dust removal membrane element is restored, and the operation resistance of the equipment is reduced.
本发明的技术方案：The technical scheme of the present invention:
一种气体振打辅助清灰高温膜法除尘设备，包括上箱体、反向喷吹系统、气体振打辅助清灰系统、花板、中箱体、除尘膜元件、灰斗、支撑，上箱体开有洁净气体出口，花板位于上箱体及中箱体之间，花板排布有花板孔，反向喷吹系统包括反向喷吹气包、喷吹主管、喷吹支管、反吹脉冲阀，反向喷吹气包通过脉冲阀与喷吹主管连接，喷吹支管安装于喷吹主管上，出气口垂直向下对准花板孔中心；A high-temperature film dust removal device for gas rapping auxiliary dust removal, including an upper box body, a reverse injection system, a gas rapping auxiliary dust removal system, a flower plate, a middle box body, a dust removal membrane element, an ash hopper, a support, and The box body has a clean gas outlet, the flower plate is located between the upper box body and the middle box body, the flower plate is arranged with flower plate holes, the reverse injection system includes the reverse injection air bag, the injection main pipe, and the injection branch pipe , Reverse blowing pulse valve, the reverse blowing air bag is connected to the blowing main pipe through the pulse valve, the blowing branch pipe is installed on the blowing main pipe, and the air outlet is vertically aligned downward to the center of the flower plate hole;
气体振打辅助清灰系统包括振打气包、振打气体主管、振打气体支管、振打出气装置、振打脉冲阀，所述振打气体主管位于花板上部，振打出气装置为弹簧钢制成，呈喇叭形，上部为大口径端，中间最窄位置为颈部，下部为小口径端，沿母线方向留有膨胀缝，大口径端直径大于花板孔直径，颈部直径与除尘膜元件外径相同，振打出气装置的大口径端焊接于花板孔下部，中心与花板孔中心对齐，花板、除尘膜元件、振打出气装置围成的空腔为振打气体腔，振打气包通过振打脉冲阀与振打气体主管相连，振打气体支管一端与振打气体主管相连，另一端与振打气体腔相连；The gas rapping auxiliary cleaning system includes a rapping gas bag, a rapping gas main pipe, a rapping gas branch pipe, a rapping air device, and a rapping pulse valve. The rapping gas main pipe is located on the upper part of the flower plate, and the rapping air device is spring steel. It is made into a trumpet shape. The upper part is the large diameter end, the narrowest position in the middle is the neck, and the lower part is the small diameter end. There is an expansion joint along the bus bar. The diameter of the large diameter end is larger than the diameter of the flower plate hole. The neck diameter and dust removal The outer diameter of the membrane element is the same. The large-diameter end of the rapping air release device is welded to the lower part of the flower plate hole, and the center is aligned with the center of the flower plate hole. The cavity enclosed by the flower plate, dust removal membrane element, and rapping air release device is the rapping gas cavity. The rapping gas bag is connected to the rapping gas main pipe through the rapping pulse valve, one end of the rapping gas branch pipe is connected to the rapping gas main pipe, and the other end is connected to the rapping gas cavity;
除尘膜元件位于中箱体内，底部为盲端，顶部安装于花板的花板孔中，上部穿过振打出气装置，除尘膜元件外壁与振打出气装置的颈部密切贴合，灰斗位于中箱体下部，灰斗开有含尘气体入口。The dust removal membrane element is located in the middle box, the bottom is the blind end, the top is installed in the flower plate hole of the flower plate, the upper part passes through the rapping air release device, the outer wall of the dust removal film element is closely attached to the neck of the rapping air release device, and the ash bucket Located in the lower part of the middle box, the ash hopper has a dusty gas inlet.
进一步的与喷吹主管相连的喷吹支管数量为1-10个，喷吹支管出气端与除尘膜元件顶部距离为2-20cm。Further, the number of blowing branch pipes connected with the blowing main pipe is 1-10, and the distance between the air outlet end of the blowing branch pipe and the top of the dust removal membrane element is 2-20 cm.
进一步的与振打气体主管302相连的振打气体支管303数量为1-10个。Further, the number of rapping gas branch pipes 303 connected to the rapping gas main pipe 302 is 1-10.
进一步的除尘膜元件为多孔材料，其材质为金属、金属间化合物、陶瓷或金属陶瓷的复合材料，其中金属材料为不锈钢、镍、钛，金属间化合物材料为钛-铝材料、铁-铝材料、镍-铝材料，陶瓷材料为氧化铝、氧化锆、碳化硅或二氧化硅材料。Further, the dust removal membrane element is a porous material, and its material is a composite material of metal, intermetallic compound, ceramic or cermet, wherein the metal material is stainless steel, nickel, titanium, and the intermetallic compound material is titanium-aluminum material, iron-aluminum material , Nickel-aluminum materials, ceramic materials are alumina, zirconia, silicon carbide or silica materials.
进一步的振打出气装置304的大口径端3041通过焊接方式与花板4底部连接。The large-diameter end 3041 of the further rapping and air outlet device 304 is connected to the bottom of the flower plate 4 by welding.
一种气体振打辅助清灰高温膜法除尘设备操作方法，包括以下步骤：An operation method of gas rapping-assisted dust removal high-temperature film dust removal equipment, including the following steps:
步骤1：高温含尘气体由含尘气体入口进入除尘设备，粉尘被除尘膜元件截留，高温气体透过除尘膜元件，除尘后的气体进入上箱体，通过洁净气体出口排出；Step 1: High-temperature dust-containing gas enters the dust removal equipment through the dust-containing gas inlet, the dust is trapped by the dust removal membrane element, the high temperature gas passes through the dust removal membrane element, and the dust-removed gas enters the upper box and is discharged through the clean gas outlet;
步骤2：定时反向脉冲喷吹清灰,设备运行一定时间后，采用反向喷吹气包内的压缩气体对除尘膜元件进行反向脉冲喷吹；Step 2: Timing reverse pulse blowing to clean dust, after the equipment runs for a certain period of time, the compressed gas in the reverse blowing air bag is used to perform reverse pulse blowing on the dust removal membrane element;
步骤3：定时气体脉冲振打辅助清灰，设备运行一定时间后，采用振打气包内的压缩气体对除尘膜元件外表面进行气体脉冲振打辅助清灰；Step 3: Timing gas pulse rapping to assist dust removal. After the equipment runs for a certain period of time, use the compressed gas in the rapping gas bag to perform gas pulse rapping to assist dust removal on the outer surface of the dust removal membrane element;
步骤4：反向脉冲喷吹清灰与气体脉冲振打辅助清灰交替进行。Step 4: Reverse pulse jet ash cleaning and gas pulse rapping assisted ash cleaning are performed alternately.
进一步的步骤1中高温气体透过除尘膜元件6的速度为0.5-2.5m/min。In the further step 1, the speed of the high-temperature gas passing through the dust removal membrane element 6 is 0.5-2.5 m/min.
进一步的步骤2中反向脉冲喷吹清灰时间间隔为60-120min，喷吹压力为0.3-0.6Mpa，喷吹时间为0.1-0.5s。In the further step 2, the time interval of reverse pulse blowing and ash cleaning is 60-120min, the blowing pressure is 0.3-0.6Mpa, and the blowing time is 0.1-0.5s.
进一步的步骤3中气体脉冲振打辅助清灰时间间隔为60-120min，气体脉冲振打压力为0.5-1.5MPa，气体脉冲振打时间为0.1-0.3s。In the further step 3, the gas pulse rapping auxiliary cleaning time interval is 60-120 min, the gas pulse rapping pressure is 0.5-1.5 MPa, and the gas pulse rapping time is 0.1-0.3s.
本发明采用气体振打辅助清灰的方式对除尘膜元件表面附着的粉尘进行清除，采用弹簧钢制成振打出气装置，花板、除尘膜元件、振打出气装置围成振打气体腔，除尘膜元件的颈部与振打出气装置紧密接触，向振打气体腔中脉冲通入压缩气体，在气体压力作用下弹簧钢颈部扩张，颈部与除尘膜元件之间出现孔隙，压缩气体从此空隙沿膜表面高速喷出，对膜表面附着的粉尘造成气体振打作用，使粉尘与膜表面进行剥离，粉尘在重力作用下落入灰斗，实现膜表面再生。喇叭形的振打出气装置可对喷出的气体进行导流，使气体沿膜表面对粉尘进行振打，振打出气装置设有膨胀缝，可避免在高温下出现膨胀变形的问题。气体振打辅助清灰与脉冲反吹交替进行，脉冲反吹可将进入除尘膜元件内部孔道的部分粉尘通过反向气流的作用带出，气体振打辅助清灰可有效去除除尘膜元件表面的粉尘，实现除尘膜元件的有效再生，降低设备运行阻力，提高设备除尘效率。The invention uses gas rapping to assist dust removal to remove the dust attached to the surface of the dust removal membrane element, and uses spring steel to make a rapping air release device. The flower plate, the dust removal film element, and the rapping air outlet device surround the rapping gas cavity to remove dust. The neck of the membrane element is in close contact with the rapping air outlet device, and compressed gas is pulsed into the rapping gas cavity. Under the action of the gas pressure, the spring steel neck expands, and a gap appears between the neck and the dust removal membrane element, and the compressed gas flows from this gap. It is sprayed at high speed along the surface of the film, causing gas vibration to the dust attached to the surface of the film, so that the dust and the surface of the film are peeled off, and the dust falls into the ash hopper under the action of gravity to realize the regeneration of the film surface. The horn-shaped air rapping device can divert the ejected gas so that the gas can vibrate the dust along the surface of the film. The rapping air device is equipped with expansion joints, which can avoid the problem of expansion and deformation at high temperatures. Gas rapping assisted dust cleaning and pulsed backflushing are performed alternately. Pulsed backflushing can take part of the dust that enters the internal pores of the dust removal membrane element through the effect of reverse airflow. Gas rapping assisted dust cleaning can effectively remove the surface of the dust removal membrane element. Dust, realize the effective regeneration of dust removal membrane elements, reduce equipment operation resistance, and improve equipment dust removal efficiency.
有益效果：本发明的气体振打辅助清灰装置可以有效去除除尘膜元件表面的粉尘，特别是高温除尘设备中无机刚性膜材料表面的清灰效果差，与脉冲反吹清灰可以达到理想的再生效果。而且可以直接安装在花板上，简便易行。Beneficial effects: The gas rapping auxiliary dust removal device of the present invention can effectively remove the dust on the surface of the dust removal membrane element, especially the surface of the inorganic rigid film material in the high temperature dust removal equipment has a poor cleaning effect, which can achieve ideal cleaning with pulse back blowing. Regeneration effect. And it can be directly installed on the flower board, which is simple and easy.
附图说明Description of the drawings
图1为本发明所述的气体振打辅助清灰高温膜法除尘设备示意图；Figure 1 is a schematic diagram of the gas rapping auxiliary dust removal high-temperature film method of dust removal equipment according to the present invention;
图2为本发明所述的气体振打辅助清灰系统及反向喷吹系统示意图；Figure 2 is a schematic diagram of the gas rapping auxiliary cleaning system and the reverse injection system according to the present invention;
图3为本发明所述的除尘膜元件及振打出气装置安装示意图；Fig. 3 is a schematic diagram of the installation of the dust removal membrane element and the rapping air release device according to the present invention;
图4为本发明所述的振打出气装置结构示意图。Fig. 4 is a schematic diagram of the structure of the rapping and air outlet device according to the present invention.
其中：1-上箱体，2-反向喷吹系统，3-气体振打辅助清灰系统，4-花板，5-中箱体，6-除尘膜元件，7-灰斗，8-支撑，101-洁净气体出口，201-反向喷吹气包，202-喷吹主管，203-喷吹支管，204-反吹脉冲阀，301-振打气包，302-振打气体主管，303-振打气体支管，304-振打出气装置，305-振打脉冲阀，3041-大口径端，3042-颈部，3043-小口径端，3044-振打气体腔，3045-膨胀缝，701-含尘气体入口。Among them: 1-upper box, 2-reverse injection system, 3-gas rapping auxiliary cleaning system, 4-flower board, 5-middle box, 6-dust removal membrane element, 7-ash hopper, 8- Support, 101-clean gas outlet, 201-reverse injection gas bag, 202-injection main pipe, 203-injection branch pipe, 204-back-blowing pulse valve, 301-rapping gas bag, 302-rapping gas main pipe, 303 -Rapping gas branch pipe, 304- Rapping air device, 305- Rapping pulse valve, 3041-large diameter end, 3042-neck, 3043-small diameter end, 3044-rapping gas cavity, 3045-expansion joint, 701- Inlet for dusty gas.
具体实施方式Detailed ways
实施例1Example 1
一种气体振打辅助清灰高温膜法除尘设备，包括上箱体1、反向喷吹系统2、气体振打辅助清灰系统3、花板4、中箱体5、除尘膜元件6、灰斗7、支撑8，上箱体1开有洁净气体出口101，花板4位于上箱体1及中箱体5之间，花板4排布有花板孔401，反向喷吹系统2包括反向喷吹气包201、喷吹主管202、喷吹支管203、反吹脉冲阀204，反向喷吹气包201通过脉冲阀204与喷吹主管202连接，喷吹支管203安装于喷吹主管202上，出气口垂直向下对准花板孔401中心；气体振打辅助清灰系统3包括振打气包301、振打气体主管302、振打气体支管303、振打出气装置304、振打脉冲阀305，所述振打气体主管302位于花板4上部，振打出气装置304为弹簧钢制成，呈喇叭形，上部为大口径端3041，中间最窄位置为颈部3042，下部为小口径端3043，沿母线方向留有膨胀缝3045，大口径端3041直径大于花板孔401直径，颈部3041直径与除尘膜元件6外径相同，振打出气装置304的大口径端3041焊接于花板孔401下部，中心与花板孔401中心对齐，花板4、除尘膜元件6、振打出气装置304围成的空腔为振打气体腔3044，振打气包301通过振打脉冲阀305与振打气体主管302相连，振打气体支管303一端与振打气体主管302相连，另一端与振打气体腔3044相连；除尘膜元件6位于中箱体5内，底部为盲端，顶部安装于花板4的花板孔401中，上部穿过振打出气装置304，除尘膜元件6外壁与振打出气装置304的颈部3042密切贴合，灰斗7位于中箱体5下部，灰斗7开有含尘气体入口701。A high-temperature film dust removal equipment for gas rapping auxiliary dust removal, including an upper box body 1, a reverse injection system 2, a gas rapping auxiliary dust removal system 3, a flower plate 4, a middle box body 5, and a dust removal film element 6, Ash hopper 7, support 8, upper box body 1 is provided with clean gas outlet 101, flower plate 4 is located between upper box body 1 and middle box body 5, flower plate 4 is arranged with flower plate holes 401, reverse injection system 2 Including the reverse injection air bag 201, the injection main pipe 202, the injection branch pipe 203, and the reverse injection pulse valve 204. The reverse injection air bag 201 is connected to the injection main pipe 202 through the pulse valve 204, and the injection branch pipe 203 is installed in On the blowing main pipe 202, the air outlet is vertically aligned with the center of the flower plate hole 401; the gas rapping auxiliary cleaning system 3 includes a rapping gas bag 301, a rapping gas main pipe 302, a rapping gas branch pipe 303, and a rapping gas outlet device 304 , Rapping pulse valve 305, the rapping gas main pipe 302 is located on the upper part of the flower plate 4, the rapping air outlet device 304 is made of spring steel and has a trumpet shape, the upper part is the large-diameter end 3041, and the narrowest position in the middle is the neck 3042 , The lower part is the small-diameter end 3043, and there is an expansion joint 3045 along the direction of the bus bar. The large-diameter end 3041 has a diameter larger than the diameter of the flower plate hole 401, and the diameter of the neck 3041 is the same as the outer diameter of the dust removal membrane element 6. The end 3041 is welded to the lower part of the flower plate hole 401, and the center is aligned with the center of the flower plate hole 401. The cavity enclosed by the flower plate 4, the dust removal membrane element 6, and the rapping air outlet 304 is the rapping gas cavity 3044. The rapping air bag 301 passes through the vibration The pulse valve 305 is connected to the rapping gas main pipe 302. One end of the rapping gas branch pipe 303 is connected to the rapping gas main pipe 302, and the other end is connected to the rapping gas chamber 3044; the dust removal membrane element 6 is located in the middle box 5, and the bottom is a blind end , The top is installed in the flower plate hole 401 of the flower plate 4, the upper part passes through the rapping air outlet device 304, the outer wall of the dust removal membrane element 6 is closely attached to the neck 3042 of the rapping air device 304, and the ash hopper 7 is located in the middle box 5. In the lower part, the ash hopper 7 has a dust-containing gas inlet 701.
进一步的与喷吹主管202相连的喷吹支管203数量为1个，喷吹支管203出气端与除尘膜元件6顶部距离为2cm。Further, the number of the blowing branch pipe 203 connected to the blowing main pipe 202 is one, and the distance between the air outlet end of the blowing branch pipe 203 and the top of the dust removal membrane element 6 is 2 cm.
与振打气体主管302相连的振打气体支管303数量为1个。The number of the rapping gas branch pipe 303 connected to the rapping gas main pipe 302 is one.
除尘膜元件为多孔材料，其材质为不锈钢。The dust removal membrane element is made of porous material, and its material is stainless steel.
振打出气装置304的大口径端3041通过焊接方式与花板4底部连接。The large-diameter end 3041 of the rapping air outlet device 304 is connected to the bottom of the flower plate 4 by welding.
一种气体振打辅助清灰高温膜法除尘设备操作方法，包括以下步骤：An operation method of gas rapping-assisted dust removal high-temperature film dust removal equipment, including the following steps:
步骤1：高温含尘气体由含尘气体入口701进入除尘设备，粉尘被除尘膜元件6截留，高温气体透过除尘膜元件6，除尘后的气体进入上箱体1，通过洁净气体出口101排出；Step 1: The high-temperature dust-containing gas enters the dust removal equipment through the dust-containing gas inlet 701, the dust is trapped by the dust removal membrane element 6, the high temperature gas passes through the dust removal membrane element 6, the dust-removed gas enters the upper box 1, and is discharged through the clean gas outlet 101 ；
步骤2：定时反向脉冲喷吹清灰,设备运行一定时间后，采用反向喷吹气包201内的压缩气体对除尘膜元件6进行反向脉冲喷吹；Step 2: Timing reverse pulse blowing to clean dust, after the equipment runs for a certain period of time, the compressed gas in the reverse blowing air bag 201 is used to perform reverse pulse blowing on the dust removal membrane element 6;
步骤3：定时气体脉冲振打辅助清灰，设备运行一定时间后，采用振打气包301内的压缩气体对除尘膜元件外表面进行气体脉冲振打辅助清灰；Step 3: Timing gas pulse rapping to assist dust removal. After the equipment runs for a certain period of time, use the compressed gas in the rapping gas bag 301 to perform gas pulse rapping to assist dust removal on the outer surface of the dust removal membrane element;
步骤4：反向脉冲喷吹清灰与气体脉冲振打辅助清灰交替进行。Step 4: Reverse pulse jet ash cleaning and gas pulse rapping assisted ash cleaning are performed alternately.
步骤1中高温气体透过除尘膜元件6的速度为0.5-m/min。In step 1, the speed of the high-temperature gas passing through the dust removal membrane element 6 is 0.5-m/min.
步骤2中反向脉冲喷吹清灰时间间隔为120min，喷吹压力为0.3MPa，喷吹时间为0.5s。In step 2, the interval of reverse pulse blowing and ash cleaning is 120min, the blowing pressure is 0.3MPa, and the blowing time is 0.5s.
步骤3中气体脉冲振打辅助清灰时间间隔为120min，气体脉冲振打压力为1.5MPa，气体脉冲振打时间为0.1s。In step 3, the gas pulse rapping auxiliary cleaning time interval is 120min, the gas pulse rapping pressure is 1.5MPa, and the gas pulse rapping time is 0.1s.
实施例2Example 2
一种气体振打辅助清灰高温膜法除尘设备，包括上箱体1、反向喷吹系统2、气体振打辅助清灰系统3、花板4、中箱体5、除尘膜元件6、灰斗7、支撑8，上箱体1开有洁净气体出口101，花板4位于上箱体1及中箱体5之间，花板4排布有花板孔401， 反向喷吹系统2包括反向喷吹气包201、喷吹主管202、喷吹支管203、反吹脉冲阀204，反向喷吹气包201通过脉冲阀204与喷吹主管202连接，喷吹支管203安装于喷吹主管202上，出气口垂直向下对准花板孔401中心；气体振打辅助清灰系统3包括振打气包301、振打气体主管302、振打气体支管303、振打出气装置304、振打脉冲阀305，所述振打气体主管302位于花板4上部，振打出气装置304为弹簧钢制成，呈喇叭形，上部为大口径端3041，中间最窄位置为颈部3042，下部为小口径端3043，沿母线方向留有膨胀缝3045，大口径端3041直径大于花板孔401直径，颈部3041直径与除尘膜元件6外径相同，振打出气装置304的大口径端3041焊接于花板孔401下部，中心与花板孔401中心对齐，花板4、除尘膜元件6、振打出气装置304围成的空腔为振打气体腔3044，振打气包301通过振打脉冲阀305与振打气体主管302相连，振打气体支管303一端与振打气体主管302相连，另一端与振打气体腔3044相连；除尘膜元件6位于中箱体5内，底部为盲端，顶部安装于花板4的花板孔401中，上部穿过振打出气装置304，除尘膜元件6外壁与振打出气装置304的颈部3042密切贴合，灰斗7位于中箱体5下部，灰斗7开有含尘气体入口701。A high-temperature film dust removal equipment for gas rapping auxiliary dust removal, including an upper box body 1, a reverse injection system 2, a gas rapping auxiliary dust removal system 3, a flower plate 4, a middle box body 5, and a dust removal film element 6, Ash hopper 7, support 8, upper box body 1 is provided with clean gas outlet 101, flower plate 4 is located between upper box body 1 and middle box body 5, flower plate 4 is arranged with flower plate holes 401, reverse injection system 2 Including the reverse injection air bag 201, the injection main pipe 202, the injection branch pipe 203, and the reverse injection pulse valve 204. The reverse injection air bag 201 is connected to the injection main pipe 202 through the pulse valve 204, and the injection branch pipe 203 is installed in On the blowing main pipe 202, the air outlet is vertically aligned with the center of the flower plate hole 401; the gas rapping auxiliary cleaning system 3 includes a rapping gas bag 301, a rapping gas main pipe 302, a rapping gas branch pipe 303, and a rapping gas outlet device 304 , Rapping pulse valve 305, the rapping gas main pipe 302 is located on the upper part of the flower plate 4, the rapping air outlet device 304 is made of spring steel and has a trumpet shape, the upper part is the large-diameter end 3041, and the narrowest position in the middle is the neck 3042 , The lower part is the small-diameter end 3043, and there is an expansion joint 3045 along the direction of the bus bar. The large-diameter end 3041 has a diameter larger than the diameter of the flower plate hole 401, and the diameter of the neck 3041 is the same as the outer diameter of the dust removal membrane element 6. The end 3041 is welded to the lower part of the flower plate hole 401, and the center is aligned with the center of the flower plate hole 401. The cavity enclosed by the flower plate 4, the dust removal membrane element 6, and the rapping air outlet 304 is the rapping gas cavity 3044. The rapping air bag 301 passes through the vibration The pulse valve 305 is connected to the rapping gas main pipe 302. One end of the rapping gas branch pipe 303 is connected to the rapping gas main pipe 302, and the other end is connected to the rapping gas chamber 3044; the dust removal membrane element 6 is located in the middle box 5, and the bottom is a blind end , The top is installed in the flower plate hole 401 of the flower plate 4, the upper part passes through the rapping air outlet device 304, the outer wall of the dust removal membrane element 6 is closely attached to the neck 3042 of the rapping air device 304, and the ash hopper 7 is located in the middle box 5. In the lower part, the ash hopper 7 has a dust-containing gas inlet 701.
与喷吹主管202相连的喷吹支管203数量为10个，喷吹支管203出气端与除尘膜元件6顶部距离为20cm。The number of blowing branch pipes 203 connected to the blowing main pipe 202 is 10, and the distance between the air outlet end of the blowing branch pipe 203 and the top of the dust removal membrane element 6 is 20 cm.
与振打气体主管302相连的振打气体支管303数量为10个。The number of rapping gas branch pipes 303 connected to the rapping gas main pipe 302 is ten.
除尘膜元件为多孔材料，其材质为钛-铝金属间化合物材料。The dust removal membrane element is a porous material, and its material is a titanium-aluminum intermetallic compound material.
振打出气装置304的大口径端3041通过焊接方式与花板4底部连接。The large-diameter end 3041 of the rapping air outlet device 304 is connected to the bottom of the flower plate 4 by welding.
一种气体振打辅助清灰高温膜法除尘设备操作方法，包括以下步骤：An operation method of gas rapping-assisted dust removal high-temperature film dust removal equipment, including the following steps:
步骤1：高温含尘气体由含尘气体入口701进入除尘设备，粉尘被除尘膜元件6截留，高温气体透过除尘膜元件6，除尘后的气体进入上箱体1，通过洁净气体出口101排出；Step 1: The high-temperature dust-containing gas enters the dust removal equipment through the dust-containing gas inlet 701, the dust is trapped by the dust removal membrane element 6, the high temperature gas passes through the dust removal membrane element 6, the dust-removed gas enters the upper box 1, and is discharged through the clean gas outlet 101 ；
步骤2：定时反向脉冲喷吹清灰,设备运行一定时间后，采用反向喷吹气包201内的压缩气体对除尘膜元件6进行反向脉冲喷吹；Step 2: Timing reverse pulse blowing to clean dust, after the equipment runs for a certain period of time, the compressed gas in the reverse blowing air bag 201 is used to perform reverse pulse blowing on the dust removal membrane element 6;
步骤3：定时气体脉冲振打辅助清灰，设备运行一定时间后，采用振打气包301内的压缩气体对除尘膜元件外表面进行气体脉冲振打辅助清灰；Step 3: Timing gas pulse rapping to assist dust removal. After the equipment runs for a certain period of time, use the compressed gas in the rapping gas bag 301 to perform gas pulse rapping to assist dust removal on the outer surface of the dust removal membrane element;
步骤4：反向脉冲喷吹清灰与气体脉冲振打辅助清灰交替进行。Step 4: Reverse pulse jet ash cleaning and gas pulse rapping assisted ash cleaning are performed alternately.
步骤1中高温气体透过除尘膜元件6的速度为2.5m/min。In step 1, the speed of the high-temperature gas passing through the dust removal membrane element 6 is 2.5 m/min.
步骤2中反向脉冲喷吹清灰时间间隔为60min，喷吹压力为0.6MPa，喷吹时间为0.1s。In step 2, the time interval of reverse pulse blowing and cleaning is 60min, the blowing pressure is 0.6MPa, and the blowing time is 0.1s.
步骤3中气体脉冲振打辅助清灰时间间隔为60min，气体脉冲振打压力为0.5MPa，气体脉冲振打时间为0.3s。In step 3, the gas pulse rapping auxiliary cleaning time interval is 60min, the gas pulse rapping pressure is 0.5MPa, and the gas pulse rapping time is 0.3s.
实施例3Example 3
一种气体振打辅助清灰高温膜法除尘设备，包括上箱体1、反向喷吹系统2、气体振打辅助清灰系统3、花板4、中箱体5、除尘膜元件6、灰斗7、支撑8，上箱体1开有洁净气体出口101，花板4位于上箱体1及中箱体5之间，花板4排布有花板孔401，反向喷吹系统2包括反向喷吹气包201、喷吹主管202、喷吹支管203、反吹脉冲阀204，反向喷吹气包201通过脉冲阀204与喷吹主管202连接，喷吹支管203安装于喷吹主管202上，出气口垂直向下对准花板孔401中心；气体振打辅助清灰系统3包括振打气包301、振打气体主管302、振打气体支管303、振打出气装置304、振打脉冲阀305，所 述振打气体主管302位于花板4上部，振打出气装置304为弹簧钢制成，呈喇叭形，上部为大口径端3041，中间最窄位置为颈部3042，下部为小口径端3043，沿母线方向留有膨胀缝3045，大口径端3041直径大于花板孔401直径，颈部3041直径与除尘膜元件6外径相同，振打出气装置304的大口径端3041焊接于花板孔401下部，中心与花板孔401中心对齐，花板4、除尘膜元件6、振打出气装置304围成的空腔为振打气体腔3044，振打气包301通过振打脉冲阀305与振打气体主管302相连，振打气体支管303一端与振打气体主管302相连，另一端与振打气体腔3044相连；除尘膜元件6位于中箱体5内，底部为盲端，顶部安装于花板4的花板孔401中，上部穿过振打出气装置304，除尘膜元件6外壁与振打出气装置304的颈部3042密切贴合，灰斗7位于中箱体5下部，灰斗7开有含尘气体入口701。A high-temperature film dust removal equipment for gas rapping auxiliary dust removal, including an upper box body 1, a reverse injection system 2, a gas rapping auxiliary dust removal system 3, a flower plate 4, a middle box body 5, and a dust removal film element 6, Ash hopper 7, support 8, upper box body 1 is provided with clean gas outlet 101, flower plate 4 is located between upper box body 1 and middle box body 5, flower plate 4 is arranged with flower plate holes 401, reverse injection system 2 Including the reverse injection air bag 201, the injection main pipe 202, the injection branch pipe 203, and the reverse injection pulse valve 204. The reverse injection air bag 201 is connected to the injection main pipe 202 through the pulse valve 204, and the injection branch pipe 203 is installed in On the blowing main pipe 202, the air outlet is vertically aligned with the center of the flower plate hole 401; the gas rapping auxiliary cleaning system 3 includes a rapping gas bag 301, a rapping gas main pipe 302, a rapping gas branch pipe 303, and a rapping gas outlet device 304 , Rapping pulse valve 305, the rapping gas main pipe 302 is located on the upper part of the flower plate 4, the rapping air outlet device 304 is made of spring steel and has a trumpet shape, the upper part is the large-diameter end 3041, and the narrowest position in the middle is the neck 3042 , The lower part is the small-diameter end 3043, and there is an expansion joint 3045 along the direction of the bus bar. The large-diameter end 3041 has a diameter larger than the diameter of the flower plate hole 401, and the diameter of the neck 3041 is the same as the outer diameter of the dust removal membrane element 6. The end 3041 is welded to the lower part of the flower plate hole 401, and the center is aligned with the center of the flower plate hole 401. The cavity enclosed by the flower plate 4, the dust removal membrane element 6, and the rapping air outlet device 304 is the rapping gas cavity 3044. The rapping air bag 301 passes through the vibration The pulse valve 305 is connected to the rapping gas main pipe 302. One end of the rapping gas branch pipe 303 is connected to the rapping gas main pipe 302, and the other end is connected to the rapping gas chamber 3044; the dust removal membrane element 6 is located in the middle box 5, and the bottom is a blind end , The top is installed in the flower plate hole 401 of the flower plate 4, the upper part passes through the rapping air outlet device 304, the outer wall of the dust removal membrane element 6 is closely attached to the neck 3042 of the rapping air device 304, and the ash hopper 7 is located in the middle box 5. In the lower part, the ash hopper 7 has a dust-containing gas inlet 701.
与喷吹主管202相连的喷吹支管203数量为8个，喷吹支管203出气端与除尘膜元件6顶部距离为10cm。The number of blowing branch pipes 203 connected to the blowing main pipe 202 is 8, and the distance between the air outlet end of the blowing branch pipe 203 and the top of the dust removal membrane element 6 is 10 cm.
与振打气体主管302相连的振打气体支管303数量为8个。The number of rapping gas branch pipes 303 connected to the rapping gas main pipe 302 is eight.
除尘膜元件为多孔材料，其材质为碳化硅材料。The dust removal membrane element is made of porous material, and its material is silicon carbide material.
振打出气装置304的大口径端3041通过焊接方式与花板4底部连接。The large-diameter end 3041 of the rapping air outlet device 304 is connected to the bottom of the flower plate 4 by welding.
一种气体振打辅助清灰高温膜法除尘设备操作方法，包括以下步骤：An operation method of gas rapping-assisted dust removal high-temperature film dust removal equipment, including the following steps:
步骤1：高温含尘气体由含尘气体入口701进入除尘设备，粉尘被除尘膜元件6截留，高温气体透过除尘膜元件6，除尘后的气体进入上箱体1，通过洁净气体出口101排出；Step 1: The high-temperature dust-containing gas enters the dust removal equipment through the dust-containing gas inlet 701, the dust is trapped by the dust removal membrane element 6, the high temperature gas passes through the dust removal membrane element 6, the dust-removed gas enters the upper box 1, and is discharged through the clean gas outlet 101 ；
步骤2：定时反向脉冲喷吹清灰,设备运行一定时间后，采用反向喷吹气包201内的压缩气体对除尘膜元件6进行反向脉冲喷吹；Step 2: Timing reverse pulse blowing to clean dust, after the equipment runs for a certain period of time, the compressed gas in the reverse blowing air bag 201 is used to perform reverse pulse blowing on the dust removal membrane element 6;
步骤3：定时气体脉冲振打辅助清灰，设备运行一定时间后，采用振打气包301内的压缩气体对除尘膜元件外表面进行气体脉冲振打辅助清灰；Step 3: Timing gas pulse rapping to assist dust removal. After the equipment runs for a certain period of time, use the compressed gas in the rapping gas bag 301 to perform gas pulse rapping to assist dust removal on the outer surface of the dust removal membrane element;
步骤4：反向脉冲喷吹清灰与气体脉冲振打辅助清灰交替进行。Step 4: Reverse pulse jet ash cleaning and gas pulse rapping assisted ash cleaning are performed alternately.
步骤1中高温气体透过除尘膜元件6的速度为1m/min。In step 1, the speed of the high-temperature gas passing through the dust removal membrane element 6 is 1 m/min.
步骤2中反向脉冲喷吹清灰时间间隔为80min，喷吹压力为0.56MPa，喷吹时间为0.3s。In step 2, the time interval of reverse pulse blowing and ash cleaning is 80min, the blowing pressure is 0.56MPa, and the blowing time is 0.3s.
步骤3中气体脉冲振打辅助清灰时间间隔为70min，气体脉冲振打压力为1MPa，气体脉冲振打时间为0.2s。In step 3, the gas pulse rapping auxiliary cleaning time interval is 70 minutes, the gas pulse rapping pressure is 1 MPa, and the gas pulse rapping time is 0.2s.

Claims (9)

  1. 一种气体振打辅助清灰高温膜法除尘设备，其特征在于，包括上箱体(1)、反向喷吹系统(2)、气体振打辅助清灰系统(3)、花板(4)、中箱体(5)、除尘膜元件(6)、灰斗(7)、支撑(8)，上箱体(1)开有洁净气体出口(101)，花板(4)位于上箱体(1)及中箱体(5)之间，花板(4)排布有花板孔(401)，反向喷吹系统(2)包括反向喷吹气包(201)、喷吹主管(202)、喷吹支管(203)、反吹脉冲阀(204)，反向喷吹气包(201)通过脉冲阀(204)与喷吹主管(202)连接，喷吹支管(203)安装于喷吹主管(202)上，出气口垂直向下对准花板孔(401)中心；A high-temperature film dust removal device with gas rapping auxiliary dust removal, which is characterized in that it comprises an upper box (1), a reverse injection system (2), a gas rapping auxiliary dust removal system (3), and a flower board (4). ), the middle box (5), the dust removal membrane element (6), the ash hopper (7), the support (8), the upper box (1) has a clean gas outlet (101), and the flower plate (4) is located in the upper box Between the body (1) and the middle box body (5), the flower plate (4) is arranged with flower plate holes (401), and the reverse injection system (2) includes reverse injection air bag (201) and injection The main pipe (202), the injection branch pipe (203), the reverse blowing pulse valve (204), the reverse injection air bag (201) is connected to the injection main pipe (202) through the pulse valve (204), and the injection branch pipe (203) Installed on the blowing main pipe (202), the air outlet is vertically downward aligned with the center of the flower plate hole (401);
    气体振打辅助清灰系统(3)包括振打气包(301)、振打气体主管(302)、振打气体支管(303)、振打出气装置(304)、振打脉冲阀(305)，所述振打气体主管(302)位于花板(4)上部，振打出气装置(304)为弹簧钢制成，呈喇叭形，上部为大口径端(3041)，中间最窄位置为颈部(3042)，下部为小口径端(3043)，沿母线方向留有膨胀缝(3045)，大口径端(3041)直径大于花板孔(401)直径，颈部(3042)直径与除尘膜元件(6)外径相同，振打出气装置(304)的大口径端(3041)焊接于花板孔(401)下部，中心与花板孔(401)中心对齐，花板(4)、除尘膜元件(6)、振打出气装置(304)围成的空腔为振打气体腔(3044)，振打气包(301)通过振打脉冲阀(305)与振打气体主管(302)相连，振打气体支管(303)一端与振打气体主管(302)相连，另一端与振打气体腔(3044)相连；The gas rapping auxiliary cleaning system (3) includes a rapping gas bag (301), a rapping gas main pipe (302), a rapping gas branch pipe (303), a rapping air device (304), and a rapping pulse valve (305), The rapping gas main pipe (302) is located on the upper part of the flower plate (4), the rapping air outlet device (304) is made of spring steel and has a trumpet shape, the upper part is the large-diameter end (3041), and the narrowest position in the middle is the neck (3042), the lower part is the small diameter end (3043), and there is an expansion joint (3045) along the busbar direction. The large diameter end (3041) has a larger diameter than the flower plate hole (401). The neck (3042) diameter and the dust removal membrane element (6) With the same outer diameter, the large-diameter end (3041) of the rapping device (304) is welded to the lower part of the flower plate hole (401), the center is aligned with the center of the flower plate hole (401), the flower plate (4), the dust removal film The cavity enclosed by the element (6) and the rapping gas outlet device (304) is the rapping gas cavity (3044), and the rapping gas bag (301) is connected to the rapping gas main pipe (302) through the rapping pulse valve (305). One end of the tapping gas branch pipe (303) is connected with the rapping gas main pipe (302), and the other end is connected with the rapping gas cavity (3044);
    除尘膜元件(6)位于中箱体(5)内，底部为盲端，顶部安装于花板(4)的花板孔(401)中，上部穿过振打出气装置(304)，除尘膜元件(6)外壁与振打出气装置(304)的颈部(3042)密切贴合，灰斗(7)位于中箱体(5)下部，灰斗(7)开有含尘气体入口(701)。The dust removal membrane element (6) is located in the middle box (5), the bottom is the blind end, the top is installed in the flower plate hole (401) of the flower plate (4), and the upper part passes through the rapping air outlet device (304), and the dust removal membrane The outer wall of the element (6) is closely attached to the neck (3042) of the rapping air outlet device (304). The ash hopper (7) is located in the lower part of the middle box (5), and the ash hopper (7) has a dust-containing gas inlet (701). ).
  2. 根据权利要求1所述的一种气体振打辅助清灰高温膜法除尘设备，其特征在于，所述的与喷吹主管(202)相连的喷吹支管(203)数量为1-10个，喷吹支管(203)出气端与除尘膜元件(6)顶部距离为2-20cm。The gas rapping auxiliary dust removal high-temperature film dust removal equipment according to claim 1, characterized in that the number of the blowing branch pipes (203) connected with the blowing main pipe (202) is 1-10, The distance between the air outlet end of the blowing branch pipe (203) and the top of the dust removal membrane element (6) is 2-20 cm.
  3. 根据权利要求1所述的一种气体振打辅助清灰高温膜法除尘设备，其特征在于，所述的与振打气体主管(302)相连的振打气体支管(303)数量为1-10个。The gas rapping auxiliary dust removal high-temperature film dust removal equipment according to claim 1, wherein the number of rapping gas branch pipes (303) connected to the rapping gas main pipe (302) is 1-10 A.
  4. 根据权利要求1所述的一种气体振打辅助清灰高温膜法除尘设备，其特征在于，所述的除尘膜元件为多孔材料，其材质为金属、金属间化合物、陶瓷或金属陶瓷的复合材料，其中金属材料为不锈钢、镍、钛，金属间化合物材料为钛-铝材料、铁-铝材料、镍-铝材料，陶瓷材料为氧化铝、氧化锆、碳化硅或二氧化硅材料。The gas rapping auxiliary dust removal high-temperature membrane dust removal equipment according to claim 1, wherein the dust removal membrane element is a porous material, and its material is a composite of metal, intermetallic compound, ceramic or cermet The materials, where the metal materials are stainless steel, nickel, and titanium, the intermetallic compound materials are titanium-aluminum materials, iron-aluminum materials, and nickel-aluminum materials, and the ceramic materials are alumina, zirconia, silicon carbide or silicon dioxide materials.
  5. 根据权利要求1所述的一种气体振打辅助清灰高温膜法除尘设备，其特征在于，所述的振打出气装置(304)的大口径端(3041)通过焊接方式与花板(4)底部连接。The gas rapping auxiliary dust removal high-temperature film dust removal equipment according to claim 1, characterized in that the large diameter end (3041) of the rapping gas outlet device (304) is welded to the flower plate (4). ) Bottom connection.
  6. 如权利要求1-5任一项所述的气体振打辅助清灰高温膜法除尘设备操作方法，其特征在于，包括以下步骤：The method for operating a high-temperature film dust removal device with gas rapping-assisted dust removal according to any one of claims 1 to 5, characterized in that it comprises the following steps:
    步骤1：高温含尘气体由含尘气体入口(701)进入除尘设备，粉尘被除尘膜元件(6)截留，高温气体透过除尘膜元件(6)，除尘后的气体进入上箱体(1)，通过洁净气体出口(101)排出；Step 1: High-temperature dust-containing gas enters the dust removal equipment through the dust-containing gas inlet (701), the dust is trapped by the dust removal membrane element (6), the high temperature gas passes through the dust removal membrane element (6), and the dust-containing gas enters the upper box (1) ), discharged through the clean gas outlet (101);
    步骤2：定时反向脉冲喷吹清灰,设备运行一定时间后，采用反向喷吹气包(201)内的压缩气体对除尘膜元件(6)进行反向脉冲喷吹；Step 2: Timing reverse pulse blowing to clean dust, after the equipment runs for a certain period of time, the compressed gas in the reverse blowing air bag (201) is used to perform reverse pulse blowing on the dust removal membrane element (6);
    步骤3：定时气体脉冲振打辅助清灰，设备运行一定时间后，采用振打气包(301)内的压缩气体对除尘膜元件外表面进行气体脉冲振打辅助清灰；Step 3: Timing gas pulse rapping to assist dust removal. After the equipment runs for a certain period of time, use the compressed gas in the rapping gas bag (301) to perform gas pulse rapping to assist dust removal on the outer surface of the dust removal membrane element;
    步骤4：反向脉冲喷吹清灰与气体脉冲振打辅助清灰交替进行。Step 4: Reverse pulse jet ash cleaning and gas pulse rapping assisted ash cleaning are performed alternately.
  7. 根据权利要求6所述的一种气体振打辅助清灰高温膜法除尘设备操作方法，其特征在于，所述的步骤1中高温气体透过除尘膜元件(6)的速度为0.5-2.5m/min。The method for operating a high-temperature membrane dust removal equipment with gas rapping-assisted dust removal according to claim 6, characterized in that the speed of the high-temperature gas passing through the dust removal membrane element (6) in step 1 is 0.5-2.5 m /min.
  8. 根据权利要求6所述的一种气体振打辅助清灰高温膜法除尘设备操作方法，其特征在于，所述的步骤2中反向脉冲喷吹清灰时间间隔为60-120min，喷吹压力为0.3-0.6Mpa，喷吹时间为0.1-0.5s。The operation method of a gas rapping-assisted dust removal high-temperature film dust removal equipment according to claim 6, characterized in that the time interval of reverse pulse blowing and dust removal in step 2 is 60-120min, and the blowing pressure It is 0.3-0.6Mpa, and the blowing time is 0.1-0.5s.
  9. 根据权利要求6所述的一种气体振打辅助清灰高温膜法除尘设备操作方法，其特征在于，所述的步骤3中气体脉冲振打辅助清灰时间间隔为60-120min，气体脉冲振打压力为0.5-1.5MPa，气体脉冲振打时间为0.1-0.3s。The method for operating a high-temperature film dust removal equipment with gas rapping assisted dust removal according to claim 6, characterized in that the time interval of the gas pulse rapping assisted dust removal in step 3 is 60-120 min, and the gas pulse vibration The beat pressure is 0.5-1.5MPa, and the gas pulse rapping time is 0.1-0.3s.
PCT/CN2020/090541 2019-10-15 2020-05-15 High-temperature membrane dust removal equipment having gas vibration assisted dust cleaning function, and operation method WO2021073082A1 (en)

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