CN113941196B - Secondary smoke collection and purification device for mobile casting electric furnace smelting - Google Patents

Secondary smoke collection and purification device for mobile casting electric furnace smelting Download PDF

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Publication number
CN113941196B
CN113941196B CN202111217216.XA CN202111217216A CN113941196B CN 113941196 B CN113941196 B CN 113941196B CN 202111217216 A CN202111217216 A CN 202111217216A CN 113941196 B CN113941196 B CN 113941196B
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Prior art keywords
ventilator
cover
electric furnace
air channel
left cover
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CN202111217216.XA
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CN113941196A (en
Inventor
宋高举
徐宏锦
刘统洲
李保强
耿昌涵
池佳春
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SIPPR Engineering Group Co Ltd
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SIPPR Engineering Group Co Ltd
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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
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • 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
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/44—Auxiliary equipment or operation thereof controlling filtration
    • B01D46/446—Auxiliary equipment or operation thereof controlling filtration by pressure measuring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C2100/00—Exhaust gas
    • C21C2100/02—Treatment of the exhaust gas
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

The invention discloses a secondary smoke dust collecting and purifying device for electric furnace smelting for mobile casting, which comprises a collecting part, a purifying part, a connecting part and a dust removing pipe, wherein the left cover and the right cover of the collecting part are positioned on two sides of an electric furnace, the top of the left cover is provided with a return air channel with a plurality of nozzles, the top of the right cover is provided with an exhaust channel, the purifying part comprises a ventilator and a dust remover which are arranged on the outer side wall of the left cover, the dust remover is provided with an exhaust chimney, and the connecting part comprises a telescopic air pipe, one end of the telescopic air pipe is connected with the outlet of the exhaust channel, the other end of the telescopic air pipe is connected with the inlet of the ventilator, one end of the telescopic air pipe is connected with the outlet of the ventilator, the other end of the telescopic air pipe is connected with the inlet of the return air channel, and the other end of the telescopic air pipe is connected with the outlet of the ventilator. The split type movable collecting cover is used, and the pressurized air at the outlet of the ventilator forms a certain airflow structure through the nozzles, so that high Wen Fu jet flow can be pushed to flow to the air outlet, and the collecting efficiency of the collecting cover is improved.

Description

Movable electric furnace smelting secondary smoke dust collecting and purifying device for casting
Technical Field
The invention relates to the technical field of smelting electric furnace dust removal in the casting industry, in particular to a movable electric furnace smelting secondary dust collecting and purifying device for casting.
Background
Electric furnace smelting is an important link in the foundry industry, and when carrying out operations such as charging, furnace repairing, tapping and the like, the furnace cover needs to be opened for charging and other technological operations, at the moment, high Wen Fu jet flow in the furnace easily escapes, and a large amount of high-temperature smoke dust diffuses into a workshop to cause great influence on the workshop environment. Therefore, at present, a trapping cover is arranged above the electric furnace, trapped smoke enters an outdoor dust removing device along a pipeline, and is purified and removed to reach the emission standard. The dust removing system of the collecting hood has high equipment investment and high operation energy consumption, and the collecting hood is positioned above the electric furnace, so that the charging, furnace repairing and tapping operations are easily influenced.
Disclosure of Invention
In order to solve the problems, the invention provides a movable electric furnace smelting secondary smoke dust collecting and purifying device for casting, which concretely adopts the following technical scheme:
the invention relates to a secondary smoke dust collecting and purifying device for electric furnace smelting for mobile casting, which comprises
The collecting part comprises a left cover and a right cover which are oppositely arranged at two sides of the electric furnace, wherein a return air channel is arranged at the top of the left cover, a plurality of nozzles positioned at the inner side of the left cover are arranged on the return air channel, an exhaust channel is arranged at the top of the right cover, and an air inlet of the exhaust channel is arranged at the inner side of the right cover;
The purification part comprises a ventilator arranged on the inner side of the left cover and a dust remover which is arranged on the outer side of the left cover and can move along with the left cover, and an emptying chimney is arranged on the dust remover;
A connecting part comprising
One end of the telescopic air pipe is connected with an outlet of the air exhaust channel, and the other end of the telescopic air pipe is connected with an inlet of the ventilator;
one end of the return air pipe is connected with an outlet of the ventilator, and the other end of the return air pipe is connected with an inlet of the return air channel;
And one end of the dust removing pipe is connected with the outlet of the ventilator, and the other end of the dust removing pipe is connected with the inlet of the dust remover.
The bottom of left side cover and right side cover all is provided with the wheel, the wheel is with the epaxial X that extends the setting from left to right of ground to the linear guide looks adaptation.
The air return channel and the air return channel are arranged along the Y direction, the nozzles are arranged on the inner side of the air return channel at intervals and are opposite to the air inlet of the air exhaust channel, and the air inlet of the air exhaust channel is of a grid plate structure.
The inside of the right cover is provided with a wind shield, and the wind shield is positioned below an air inlet of the exhaust channel.
The telescopic air pipe comprises a first section arranged at the top of the return air channel, a second section arranged between the left cover and the right cover and a third section arranged outside the left cover and extending towards the inlet of the ventilator, wherein the first section, the second section and the third section are sequentially connected, and the second section is of a telescopic sleeve structure.
The return air pipe and the dust removing pipe are respectively communicated with an outlet main pipe of the ventilator.
The dust remover is characterized in that a dust removing mechanism is further arranged on the outer side of the left cover and comprises an air compressor and a compressed air bag which are connected with the dust remover.
The ventilator is a speed-regulating ventilator.
The invention provides a secondary smoke dust collecting and purifying device for smelting in an electric furnace for mobile casting, which uses a split type movable collecting hood, and a circulating air system is arranged between the split type movable collecting hood and the movable collecting hood, wherein the pressured air at an outlet of a ventilator forms a certain air flow structure through a nozzle, and pushes high Wen Fu jet flow to flow towards an air outlet, so that the collecting efficiency of the collecting hood is improved, most smoke gas returns at the outlet of the ventilator and participates in the air flow structure in the hood, and the rest part of smoke gas enters a dust remover for purification, so that the ventilation quantity of the dust remover is reduced, the volume of the dust remover is reduced, the investment is reduced, the dust remover can be fixed on the collecting hood and moves along with the dust remover, the defect of insufficient field space when a pipeline is arranged is avoided, the ventilation quantity of the ventilator can also automatically adjust the air quantity along with the opening width of the collecting hood, the air flow structure in the hood can be optimized according to requirements, and the running energy consumption of equipment is effectively reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a right side view of fig. 1.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings, and the embodiments and specific working procedures of the present invention are given by implementing the present embodiment on the premise of the technical solution of the present invention, but the protection scope of the present invention is not limited to the following embodiments.
As shown in figures 1-3, the secondary smoke dust collecting and purifying device for the smelting of the movable electric furnace for casting consists of a collecting part, a purifying part and a connecting part.
The capturing part comprises a left cover 101 and a right cover 102 which are oppositely arranged at two sides of the electric furnace, and wheels 103 are arranged at the bottoms of the left cover 101 and the right cover 102 and are used for being matched with an X-direction linear guide rail 104 which is arranged on the ground in a extending way from left to right, so that the left cover 101 and the right cover 102 can be conveniently opened or closed. The top of the left cover 101 is provided with a Y-direction return air channel 105, a plurality of nozzles 106 positioned on the inner side of the left cover 101 are arranged on the return air channel 105, the top of the right cover 102 is provided with a Y-direction exhaust air channel 107, and an air inlet 108 of the exhaust air channel 107 is in a grid plate structure and positioned on the inner side of the right cover 102 and opposite to the nozzles 106. When the device is used, the nozzle 106 of the left cover 101 can blow out pressurized air flow, and the air flow can change the flow direction of the floating jet flow in the cover, so that most of dust-containing flue gas overflowed from the electric furnace flows to the right cover 102 and enters the exhaust channel 107 through the air inlet 108, and the pollutant capturing efficiency is improved. Normally, a wind shield 109 positioned below the air inlet of the air exhaust channel 107 is further installed on the inner side of the right cover 102, so as to optimize the airflow structure in the left cover 101 and the right cover 102, and further improve the pollutant capturing efficiency.
The above-mentioned purifying part includes a ventilator 201 installed outside the left cover 101 and a dust remover 202 installed outside the left cover 101. The ventilator 201 is a speed-adjusting ventilator, the ventilation amount of which increases with the increase in the distance between the left cover 101 and the right cover 102, and the ventilation amount is minimum when the left cover 101 and the right cover 102 are closed. The dust collector 202 adopts a bag type dust collector, can bear the flue gas temperature of more than 300 ℃ and the particulate matters of more than 500 ℃, and the concentration of the purified particulate matters is not more than 2.4mg/m < 3 >. The dust remover 202 is provided with an emptying chimney 203, and the dust remover 202 is also connected with an ash cleaning mechanism consisting of an air compressor 204 and a compressed air bag 205. When the dust remover 202 reaches the ash removal pressure, the compressed air pre-stored in the compressed air bag 205 can perform blowing ash removal. Because the dust remover 202 is fixed on the left cover 101, the arrangement difficulty of the related row of pipelines can be reduced, and the overall construction cost is reduced by about 20 percent.
The connecting part comprises a telescopic air pipe 301, an air return pipe 302 and a dust removing pipe 303. The telescopic air duct 301 is connected at one end to the outlet of the exhaust duct 107 and at the other end to the inlet of the ventilator 201. Specifically, the telescopic air duct 301 includes a first section, a second section and a third section, which are sequentially connected, the first section is located at the top of the return air channel 105, the second section is located between the left cover 101 and the right cover 102, and is a telescopic sleeve structure suitable for the distance change between the left cover and the right cover, and the third section is located outside the left cover 101 and extends towards the inlet of the ventilator 201. The return air duct 302 has one end connected to the outlet of the ventilator 201 and the other end connected to the inlet of the return air duct 105. The dust removing pipe 303 has one end connected to the outlet of the ventilator 201 and the other end connected to the inlet of the dust remover 202. The return air duct 302 and the dust removal duct 303 are respectively connected to the outlet manifold of the ventilator 201.
When the electric furnace is used, the ventilator 201 is started, dust-containing flue gas overflowed from the electric furnace enters the telescopic air pipe 301 through the air exhaust channel 107, the outlet of the ventilator 201 is divided into two parts, one part enters the air return channel 105 and is sprayed out through the nozzle 106 under pressure, the flowing direction of the floating jet in the cover can be effectively changed, the dust in the cover is prevented from escaping, the other part enters the dust remover 202 through the dust removing pipe 303 to be purified, and the dust-containing flue gas is discharged through the emptying chimney 203 after reaching the indoor discharge limit standard. The total emission of the particulate matters in the discharged gas is reduced by 60-80% compared with the traditional treatment, the environmental protection benefit is obvious, and the heating energy consumption caused by ventilation can be eliminated for heating areas.
During operation of the fire, the ventilator 201 should continue to operate, changing the mode of operation of the ventilator 201 only by adjusting the opening of the left and right hoods 101 and 102. In general, the left cover 101 and the right cover 102 are closed during electric furnace smelting and tapping, and the ventilation amount of the ventilator is minimized, and the left cover 101 and the right cover 102 are opened during operations such as charging and repairing of the electric furnace, and the ventilation amount of the ventilator is maximized. Through accounting, the working mode can reduce the operation energy consumption by 20% -30%.
It should be noted that, in the description of the present invention, terms such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Claims (5)

1.一种移动式铸造用电炉熔炼二次烟尘捕集净化装置，其特征在于：包括1. A mobile casting electric furnace smelting secondary smoke capture and purification device, characterized in that: 捕集部，包括相对设置在电炉两侧的左罩和右罩，所述左罩顶部设置有回风通道，所述回风通道上设置有多个位于左罩内侧的喷口，所述右罩顶部设置有排风通道，所述排风通道的进风口设置在右罩内侧；The collecting part comprises a left cover and a right cover which are arranged on both sides of the electric furnace relatively, the top of the left cover is provided with a return air channel, the return air channel is provided with a plurality of nozzles located on the inner side of the left cover, the top of the right cover is provided with an exhaust air channel, the air inlet of the exhaust air channel is arranged on the inner side of the right cover; 净化部，包括设置在左罩外侧壁上的通风机和除尘器，所述除尘器上设置有排空烟囱；The purification part includes a ventilator and a dust collector arranged on the outer side wall of the left cover, and the dust collector is provided with an exhaust chimney; 连接部，包括Connection part, including 伸缩风管，所述伸缩风管一端与排风通道的出口相连，另一端与所述通风机的进口相连；A telescopic air duct, one end of which is connected to the outlet of the exhaust passage, and the other end of which is connected to the inlet of the ventilator; 回风管，所述回风管一端与通风机的出口相连，另一端与回风通道的进口相连；A return air duct, one end of which is connected to the outlet of the ventilator, and the other end of which is connected to the inlet of the return air channel; 除尘管，所述除尘管一端与通风机的出口相连，另一端与除尘器的进口相连；A dust removal pipe, one end of which is connected to the outlet of the ventilator, and the other end of which is connected to the inlet of the dust collector; 所述回风通道和排风通道均沿Y向设置，所述喷口间隔设置在回风通道内侧并正对排风通道的进风口，所述排风通道的进风口为栅格板结构；The return air channel and the exhaust air channel are both arranged along the Y direction, the nozzles are arranged at intervals inside the return air channel and facing the air inlet of the exhaust air channel, and the air inlet of the exhaust air channel is a grid plate structure; 所述伸缩风管包括设置在回风通道顶部的第一段、设置在左罩和右罩之间的第二段、以及设置在左罩外侧向通风机进口延伸的第三段，所述第一段、第二段和第三段依次相连，且所述第二段则为伸缩式套管结构；The telescopic air duct includes a first section arranged at the top of the return air channel, a second section arranged between the left cover and the right cover, and a third section arranged outside the left cover and extending toward the ventilator inlet, the first section, the second section and the third section are connected in sequence, and the second section is a telescopic sleeve structure; 所述回风管和除尘管分别与通风机的出口总管相连通。The return air duct and the dust removal duct are respectively connected to the outlet main pipe of the ventilator. 2.根据权利要求1所述的移动式铸造用电炉熔炼二次烟尘捕集净化装置，其特征在于：所述左罩和右罩的底部均设置有具有驱动动力的轮子，所述轮子与地面上由左向右延伸设置的X向直线导轨相适配。2. The mobile electric furnace smelting secondary smoke capture and purification device for casting according to claim 1 is characterized in that: the bottom of the left cover and the right cover are both provided with wheels with driving power, and the wheels are adapted to the X-direction linear guide extending from left to right on the ground. 3.根据权利要求1所述的移动式铸造用电炉熔炼二次烟尘捕集净化装置，其特征在于：所述右罩内侧设置有挡风板，所述挡风板位于排风通道的进风口下方。3. The mobile electric furnace smelting secondary smoke capture and purification device for casting according to claim 1 is characterized in that a wind shield is provided on the inner side of the right cover, and the wind shield is located below the air inlet of the exhaust channel. 4.根据权利要求1所述的移动式铸造用电炉熔炼二次烟尘捕集净化装置，其特征在于：所述左罩外侧还设置有清灰机构，所述清灰机构包括与除尘器相连的空压机和压缩空气包。4. The mobile electric furnace smelting secondary smoke capture and purification device for casting according to claim 1 is characterized in that a dust cleaning mechanism is also provided on the outer side of the left cover, and the dust cleaning mechanism includes an air compressor and a compressed air bag connected to the dust collector. 5.根据权利要求1所述的移动式铸造用电炉熔炼二次烟尘捕集净化装置，其特征在于：所述通风机为调速风机。5. The mobile electric furnace smelting secondary smoke capture and purification device for casting according to claim 1 is characterized in that the ventilator is a speed-adjustable fan.
CN202111217216.XA 2021-10-19 2021-10-19 Secondary smoke collection and purification device for mobile casting electric furnace smelting Active CN113941196B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114618856B (en) * 2022-03-25 2024-05-07 机械工业第六设计研究院有限公司 Smoke dust trapping and purifying method for large casting cutting casting head
CN115751991B (en) * 2022-12-02 2025-06-13 机械工业第六设计研究院有限公司 Large electric furnace flue gas capture method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202461093U (en) * 2012-03-01 2012-10-03 无锡市西漳环保设备有限公司 Openable smoke collecting hood
CN109745788A (en) * 2019-03-11 2019-05-14 河南中创科源环保科技有限公司 A kind of downflow type clarifying smoke system and its purification flow field
CN216295502U (en) * 2021-10-19 2022-04-15 机械工业第六设计研究院有限公司 Movable electric furnace smelting secondary smoke dust collecting and purifying device for casting

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202461093U (en) * 2012-03-01 2012-10-03 无锡市西漳环保设备有限公司 Openable smoke collecting hood
CN109745788A (en) * 2019-03-11 2019-05-14 河南中创科源环保科技有限公司 A kind of downflow type clarifying smoke system and its purification flow field
CN216295502U (en) * 2021-10-19 2022-04-15 机械工业第六设计研究院有限公司 Movable electric furnace smelting secondary smoke dust collecting and purifying device for casting

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