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Explosion proof of bag type dust collector should be prevented in advance

Release time:2020年02月16日

  In order to prevent the detection and fire-fighting measures, necessary fire-fighting measures can be taken in the dust removal system.

  ① Fire fighting facilities. It mainly includes water, CO2 and inert extinguishing agent. For cement plant, CO2 and nitrogen can be used.

  ② Temperature detection. In order to remove the temperature change of the dust collector and control the ignition point, several thermometers are respectively installed on the ash hopper at the inlet of the dust collector.

  ③ CO detection. Due to the large volume of large-scale dust removal equipment, the installation of thermometer is very limited, and sometimes the burning phenomenon occurs far away from the measuring point of thermometer is difficult to reflect from the thermometer. A CO detection device can be installed at the outlet of the dust remover to help detection. As long as combustion occurs anywhere in the dust remover, the CO in the flue gas will rise. At this time, the alarm of the increase of CO concentration will be jointly sold with the control of the dust removal system, so as to stop the operation of the system dust remover in time.

  (5) equipment grounding measures: the explosion-proof dust remover is often arranged in the open air due to the operation safety. According to the requirements of equipment grounding, equipment grounding and lightning protection become an essential measure, but the dust collector is generally not equipped with lightning rod.

  (6) it is necessary to select explosion-proof parts in the explosion-proof measures of dust remover. The explosion-proof dust remover is forbidden to cause the explosion hazard when the dust in the operation condition flows into the electrical load. During the operation of the precipitator, when the electric load and components are in contact with the current transmission, even in the conduction, electric shock and cremation are inevitable. It is also easy to cause the explosion of the dust source gas with the discharge spark induced concentration exceeding the limit. All the electrical load components must be explosion-proof components to prevent the explosion-induced factors. Ensure the safety of equipment operation and operation. For example, the pulse valve of the pulse dust collector and the solenoid valve for the lifting valve should be explosion-proof products.

  (7) measures to prevent Mars from mixing into the bag type dust remover to deal with the waste gas of sawdust boiler, rice husk boiler, aluminum regeneration furnace and smelting furnace, the burnt dust in the furnace may enter the box with the air flow of the air duct, causing the dust accumulated on the filter cloth to catch fire, causing an accident.

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