WO2016106618A1 - 一种烟尘气流输送干道清堵装置及方法 - Google Patents

一种烟尘气流输送干道清堵装置及方法 Download PDF

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WO2016106618A1
WO2016106618A1 PCT/CN2014/095743 CN2014095743W WO2016106618A1 WO 2016106618 A1 WO2016106618 A1 WO 2016106618A1 CN 2014095743 W CN2014095743 W CN 2014095743W WO 2016106618 A1 WO2016106618 A1 WO 2016106618A1
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airflow
sand
soot
trunk
air
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PCT/CN2014/095743
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English (en)
French (fr)
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石宏娇
石仁章
梁金凤
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耒阳市焱鑫有色金属有限公司
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Priority to PCT/CN2014/095743 priority Critical patent/WO2016106618A1/zh
Publication of WO2016106618A1 publication Critical patent/WO2016106618A1/zh
Priority to ZA2017/04798A priority patent/ZA201704798B/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes

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  • the invention relates to a dust collector air flow conveying pipeline in a non-ferrous smelting industry, in particular to a method and a device for cleaning a dust collecting air passage of a dust collector by using sand blasting.
  • soot In the non-ferrous smelting industry, soot is generally transported through an air delivery system.
  • the common airflow conveying system is branched into a multi-channel soot conveying branch by a gas input trunk road connected to the gas source, and the multi-channel soot conveying branch collects the soot, and then the dust is separated by the airflow conveying trunk and the bag dust collector. Since the soot entering the soot flow conveying pipe contains more zinc oxide, lead oxide, antimony oxide and arsenic oxide, these extremely fine metal oxide soots often adhere to the air flow conveying system due to moisture absorption, viscous oil and static electricity.
  • the technical problem to be solved by the present invention is to provide a simple, practical and efficient soot airflow conveying trunk clearing device and method for the problem that the existing dust collector of the dust collector is easily blocked by the dust.
  • a soot airflow conveying trunk clearing device comprising at least an airflow input trunk connected to a gas source, a multi-channel soot conveying branch, an airflow output trunk, and an airflow output trunk.
  • An air flow conveying system composed of a bag filter at the end, where the air source of the air flow input channel is provided with a high sand bucket and a sand-sand mixer for the sand valve, and a sand inlet is arranged at the top of the air sand mixer, and the sand inlet is connected to the sand inlet
  • An output end of the high sand bucket, the air inlet and the air outlet are respectively disposed at two ends of the air sand mixer; a compressed air source is connected to the air inlet through an intake valve, and the air outlet is connected to the input end of the air flow output trunk
  • the end of the airflow output trunk can be switched to be connected to the cyclone separator, and the lower part of the cyclone separator is provided with a silo, and the airflow output end of the cyclone separator is connected to the input end of the bag filter; when the airflow conveying pipe is blocked, periodically or Irregularly start the high sand bucket and
  • the sand is discharged from the lower part of the cyclone to the silo for recycling, and the airflow enters the bag dust collector for further dust removal.
  • the sand supply valve of the high sand bucket is closed, and the cyclone separator is switched, so that the airflow at the output end of the compressed air source is directly sent through the airflow output trunk to carry out the soot transportation.
  • a further improvement of the above solution is that the high sand bucket is pyramidal.
  • the gas sand mixer is a venturi.
  • a further improvement of the above solution is that a soot bin is disposed between the airflow output end of the cyclone and the bag filter.
  • the present invention also provides a clearing method for using the above-mentioned soot airflow conveying trunk clearing device, which comprises the following steps:
  • the cyclone separator mentioned in the above scheme is commercially available.
  • the invention utilizes a gas sand mixer to inject high-speed moving sand into the airflow output trunk, and uses the kinetic energy to wash, cut and grind to clear the plug, and the effect is excellent.
  • the invention solves the historical problem that the airflow output is easy to block and block the pipeline in the metallurgical industry by using the invention to clear the airflow output trunk.
  • 1 is a schematic diagram of the principle and structure of the present invention.
  • an embodiment of the present invention includes airflow transportation consisting of at least an airflow input trunk connected to a gas source, a multi-channel soot conveying branch, an airflow output trunk 6, and a bag dust collector 9 at the end of the airflow output trunk. system.
  • the air source of the airflow input trunk is provided with a high sand bucket 3 and a gas sand mixer 5 for the sand valve 4, and a sand inlet 51 is disposed at the top of the air sand mixer 5, and the sand inlet 51 is connected to the output of the high sand bucket 3.
  • the gas inlet port 52 and the gas outlet port 53 are respectively provided at both ends of the gas sand mixer 5.
  • a source of compressed air 1 is connected to the intake port 52 via an intake valve 2, which is connected to the input end of the airflow output trunk 6.
  • the end of the air flow output trunk 6 is switchably connected to the cyclone 7, and the lower portion of the cyclone 7 is provided with a silo, and the air outlet of the cyclone 7 is connected to the input end of the bag filter 9.
  • the high sand bucket 3 and the gas sand mixer 5 are started periodically or irregularly to make the compressed air
  • the source output airflow enters the airflow output trunk through the gas sand mixer, and the moving sand adheres to the dust adhering to the inner wall of the airflow output trunk, and then the airflow enters the cyclone for gas sand separation, and the sand is discharged from the lower part of the cyclone to the material.
  • the warehouse is used for recycling, and the airflow enters the bag filter to further remove dust; after clearing, the sand valve of the high sand bucket is closed, and the cyclone separator is cut off, so that the airflow at the output end of the compressed air source is directly sent through the airflow output trunk for soot transportation.
  • the high-position sand hopper 3 is a cone and is disposed at the top of the air-sand mixer 5, and is connected to the sand inlet 51 of the air-sand mixer 5 via the sanding valve 4.
  • the gas sand mixer 5 is preferably a venturi.
  • a soot bin 8 is disposed between the airflow output end of the cyclone separator 7 and the bag filter 9, so that the soot in the soot stream output from the cyclone 7 is further separated and then enters the bag filter 9.
  • the cyclone separator 7 used in this embodiment is commercially available.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Air Transport Of Granular Materials (AREA)

Abstract

一种烟尘气流输送干道清堵装置及方法，其在气流输入干道（6）的气源处设置高位砂斗（3）和气砂混合器（5）；一压缩空气源（1）经进气阀（2）连接于该气砂混合器（5）的进气口（52），该气砂混合器（5）的出气口（53）连接该气流输出干道（6）的输入端；该气流输出干道（6）的末端可切换连接旋风分离器（7），该旋风分离器（7）的气流输出端连接该布袋收尘器（9）的输入端；当气流输送管道（6）堵塞时，定期或不定期地启动高位砂斗（3）和气砂混合器（5），使压缩空气源（1）输出气流经气砂混合器（5）进入气流输出干道（6），利用运动的砂子清除粘附的烟尘，之后气流进入旋风分离器（7），经气砂分离后，气流进入布袋收尘器（9）进一步除尘；清堵后，关闭高位砂斗（3）的给砂阀（4），切断旋风分离器（7），使压缩空气源（1）输出端的气流直接经气流输出干道（6）进行烟尘输送。

Description

一种烟尘气流输送干道清堵装置及方法 技术领域
本发明涉及有色冶炼行业中的收尘器烟尘气流输送管道，特别是一种运用喷砂对收尘器烟尘气流输送干道进行清堵的方法及其装置。
背景技术
在有色冶炼行业，烟尘一般经过气流输送系统进行输送。常见的气流输送系统由一连接气源的气流输入干道分支为多路烟尘输送支道，多路烟尘输送支道收集烟尘后，再都经由气流输送干道、布袋收尘器进行尘气分离。由于进入烟尘气流输送管道的烟尘含有较多的氧化锌、氧化铅、氧化锑和氧化砷等，这些极细的金属氧化物烟尘常因吸潮、粘油及静电作用而粘附在气流输送系统的干道和支道的管道内壁上，随着时间积累，造成管内缩径，直至堵塞，无论浓相输送还是稀相输送，都发生这种现象。由于多路烟尘输送支道的长度较短，且通过法兰或其他方式与主干道相连接，因而现在对烟尘输送支道的堵塞问题已有成熟的处理方案，但是由于气流输送干道管路长，因而一旦干道管路出现堵塞，厂家只能割管清堵，即使割管清堵，也工程巨大，维修十分困难，因而许多厂家有时不得不放弃堵塞的输出干道。
发明内容
本发明所要解决的技术问题是，针对现有收尘器烟尘气流输送干道容易被烟尘粘接堵塞的问题，提供一种简单、实用、高效的烟尘气流输送干道清堵装置及方法。
为解决上述技术问题，本发明采用的技术方案是：一种烟尘气流输送干道清堵装置，包括至少由连接气源的气流输入干道、多路烟尘输送支道、气流输出干道及位于气流输出干道末端的布袋收尘器组成的气流输送系统，该气流输入干道的气源处设置带给砂阀的高位砂斗和气砂混合器，该气砂混合器的顶部设置砂子入口，该砂子入口连接该高位砂斗的输出端，该气砂混合器的两端分别设置进气口和出气口；一压缩空气源经进气阀连接于该进气口，该出气口连接该气流输出干道的输入端；该气流输出干道的末端可切换连接旋风分离器，该旋风分离器下部设置料仓，该旋风分离器的气流输出端连接该布袋收尘器的输入端；当气流输送管道堵塞时，定期或不定期地启动高位砂斗和气砂混合器，使压缩空气源输出气流经气砂混合器进入气流输出干道，利用高速运动的砂子清除粘附在气流输出干道内壁上的烟尘，之后气砂流进入旋风分离器进行气砂分离，砂子从旋风分离器的下部排出到料仓供回收利用，气流进入布袋收尘器进一步除尘；清堵后，关闭高位砂斗的给砂阀，切换旋风分离器，使压缩空气源输出端的气流直接经气流输出干道进行烟尘输送。
上述方案的进一步改进为，该高位砂斗为锥体状。该气砂混合器为文氏管。
上述方案的进一步改进为，该旋风分离器的气流输出端与布袋收尘器之间设置烟尘仓。
为解决上述技术问题，本发明还提供了一种利用上述烟尘气流输送干道清堵装置的清堵方法，其包括以下步骤：
1)、在高位砂斗内加入砂子，或者小钢珠或无尘水渣，开启进气阀和给砂阀，气、砂在气砂混合器中混合后高速进入气流输送系统的气流输出干道，沿途清堵，直至气流输出干道的末端；
2)、清堵气流到达气流输出干道的末端后进入旋风分离器，经旋风分离器进行气砂分离后，烟尘气流进入气流输送系统的布袋收尘器，经布袋收尘后，实现尘气分离；
3)、根据气流输送系统内气阻增加状态，判断气流输送系统的管道粘堵情况，定期或不定期的启动高位砂斗、气砂混合器及旋风分离器，利用运动的砂子清除粘附在气流输出干道内壁上的烟尘；
4)、清堵后，关闭给砂阀和进气阀，切断旋风分离器的连接支路，恢复气流输送系统的正常运转。
上述方案中提到的旋风分离器为市售。
本发明利用气砂混合器向气流输出干道内喷入高速运动的砂子，利用其动能的冲刷、切削、研磨作用清堵，效果极佳。利用本发明对气流输出干道清堵，高效可靠，简单易行，解决了冶金行业气流输送易粘堵管道的历史难题。
附图说明
图1为本发明原理及结构示意图。
图中：1压缩空气源；2进气阀；3高位砂斗；4给砂阀；5气砂混合器；6气流输出干道；7旋风分离器；8烟尘仓；9布袋收尘器。
具体实施方式
如图1所示，本发明一具体实施例包括至少由连接气源的气流输入干道、多路烟尘输送支道、气流输出干道6及位于气流输出干道末端的布袋收尘器9组成的气流输送系统。该气流输入干道的气源处设置带给砂阀4的高位砂斗3和气砂混合器5，该气砂混合器5的顶部设置砂子入口51，该砂子入口51连接该高位砂斗3的输出端，该气砂混合器5的两端分别设置进气口52和出气口53。一压缩空气源1经进气阀2连接于该进气口52，该出气口53连接该气流输出干道6的输入端。该气流输出干道6的末端可切换连接旋风分离器7，该旋风分离器7的下部设置料仓，该旋风分离器7的气流输出端连接该布袋收尘器9的输入端。当气流输送管道的气阻增加时，定期或不定期地启动高位砂斗3和气砂混合器5，使压缩空气 源输出气流经气砂混合器进入气流输出干道，利用运动的砂子清除粘附在气流输出干道内壁上的烟尘，之后气流进入旋风分离器进行气砂分离，砂子从旋风分离器的下部排出到料仓供回收利用，气流进入布袋收尘器进一步除尘；清堵后，关闭高位砂斗的给砂阀，切断旋风分离器，使压缩空气源输出端的气流直接经气流输出干道进行烟尘输送。
该高位砂斗3为锥形体，且设置于该气砂混合器5的顶部，并经给砂阀4与气砂混合器5的砂子入口51连接。该气砂混合器5优选为文氏管。
该旋风分离器7的气流输出端与布袋收尘器9之间设置烟尘仓8，以将从旋风分离器7输出的烟尘气流中的烟尘进一步分离后再进入布袋收尘器9。
本实施例中用到的旋风分离器7为市售。

Claims (5)

  1. 一种烟尘气流输送干道清堵装置，包括至少由连接气源的气流输入干道、多路烟尘输送支道、气流输出干道及位于气流输出干道末端的布袋收尘器组成的气流输送系统，其特征在于，该气流输入干道的气源处设置带给砂阀的高位砂斗和气砂混合器，该气砂混合器的顶部设置砂子入口，该砂子入口连接该高位砂斗的输出端，该气砂混合器的两端分别设置进气口和出气口；一压缩空气源经进气阀连接于该进气口，该出气口连接该气流输出干道的输入端；该气流输出干道的末端可切换连接旋风分离器，该旋风分离器下部设置料仓，该旋风分离器的气流输出端连接该布袋收尘器的输入端；当气流输送管道堵塞时，定期或不定期地启动高位砂斗和气砂混合器，使压缩空气源输出气流经气砂混合器进入气流输出干道，利用运动的砂子清除粘附在气流输出干道内壁上的烟尘，之后气流进入旋风分离器进行气砂分离，砂子从旋风分离器的下部排出到料仓供回收利用，气流进入布袋收尘器进一步除尘；清堵后，关闭高位砂斗的给砂阀，切断旋风分离器，使压缩空气源输出端的气流直接经气流输出干道进行烟尘输送。
  2. 根据权利要求1所述的一种烟尘气流输送干道清堵装置，其特征在于，该高位砂斗为锥体状。
  3. 根据权利要求1所述的一种烟尘气流输送干道清堵装置，其特征在于，该气砂混合器为文氏管。
  4. 根据权利要求1所述的一种烟尘气流输送干道清堵装置，其特征在于，该旋风分离器的气流输出端与布袋收尘器之间设置烟尘仓。
  5. 一种利用权利要求1所述烟尘气流输送干道清堵装置的清堵方法，其特征在于包括以下步骤：
    1)、在高位砂斗内加入砂子，或者小钢珠或无尘水渣，开启进气阀和给砂阀，气、砂在气砂混合器中混合后高速进入气流输送系统的气流输出干道，沿途清堵，直至气流输出干道的末端；
    2)、清堵气流到达气流输出干道的末端后进入旋风分离器，经旋风分离器进行气砂分离后，烟尘气流进入气流输送系统的布袋收尘器，经布袋收尘后，实现尘气分离；
    3)、根据气流输送系统内气阻增加状态，判断气流输送系统的管道粘堵情况，定期或不定期的启动高位砂斗、气砂混合器及旋风分离器，利用运动的砂子清除粘附在气流输出干道内壁上的烟尘；
    4)、清堵后，关闭给砂阀和进气阀，切断旋风分离器的连接支路，恢复气流输送系统的正常运转。
PCT/CN2014/095743 2014-12-31 2014-12-31 一种烟尘气流输送干道清堵装置及方法 WO2016106618A1 (zh)

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ZA2017/04798A ZA201704798B (en) 2014-12-31 2017-07-14 Apparatus and method for clearing blockage in dust airflow conveying main duct

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CN110950110A (zh) * 2019-11-19 2020-04-03 云南中翼鼎东能源科技开发有限公司 一种可在线清除输送管道死角积料的除尘装置
CN117989654A (zh) * 2024-04-03 2024-05-07 汇乐智能装备(常州)有限公司 一种地吸除尘通风装置

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