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    Home > Coatings News > Paints and Coatings Market > 8 life-saving tools that chemical people must know

    8 life-saving tools that chemical people must know

    • Last Update: 2020-11-19
    • Source: Internet
    • Author: User
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    Chemical industry because of the high risk of pressure vessels and materials in its production, in order to prevent or reduce accidents, in the design and construction of chemical plants installed a lot of safety devices, these safety devices at a critical moment has become our chemical people's life-saving tools. The 8 life-saving tools described below, are you all in the factory?
    Safety valve, air-release tube, recycling tube
    bypass pipe (valve) in the chemical automation device production feed, discharge pipe are equipped with side channels, set the main role of bypass pipe: First, to meet the needs of central control operation;
    bypass pipe is usually set in the upper part of the automatic control valve, the device is in the normal shutdown state when the instrument auto-regulating valve is in normal use
    China
    . When the automatic control valve is not working or access is in order to close the access valve on both sides, open the bypass valve, can be continuous production. When the equipment failure into an out-of-control reaction, can also be through the bypass valve, diversion, control the situation, reduce the risk.
    emergency shut-off valve emergency shut-off valve is an important safety device in automated production equipment, in the production of abnormalities or accidents, such as the device control room can be remote control, directly cut off the feed valve.
    emergency shut-off valve is generally set on the more dangerous device feed tube, with access valves on both sides.
    Safety accessories such as safety valves, air-release tubes, recycling tubes and torches are important safety accessories in pressure devices, and when the reaction or pressure in the unit exceeds a certain value, the relief valve opens itself to relieve pressure or empty. The action pressure of the relief valve is adjusted according to the requirements of the device.
    to ensure emptying of materials, emptying tubes and recovery tubes are added to the relief valves, and emptying materials are recycled into the material tank (cans) for storage or emptying until torch burning. However, there are also some enterprises with backward production technology or poor production conditions do not have recycling pipes, which are directly emptied in the event of an accident, which may lead to combustion explosions or the expansion of accident disasters.
    sheet set on the pressure relief hole of the pressure device is called the explosion-proof film. When the pressure of the device exceeds a certain value, the metal sheet bursts to achieve the purpose of the relief protection device. Due to the large amount of punch (spray) that occurs after the fire film bursts, it poses a greater risk to the device.
    , therefore, generally on the blast film to fill the empty recovery pipe, the explosion-proof mold burst out of the material to the tank (can) or empty to the torch burning. However, some devices with poor production conditions are not filled with empty recycling tubes. Some devices are fitted with double-layer explosion-proof film and data acquisition devices are installed between explosion-proof membranes to increase the safety of the reaction.
    Data acquisition device in order to control process parameters, improve the quality and efficiency of chemical production, but also for production safety, general production equipment in different parts of the device equipped with temperature, pressure, materials (products) and other data collection and sampling devices, these devices for operators, control personnel to provide real information, data acquisition device failure, will pose a great threat to production safety.
    Nitrogen and steam blow-out systems Most chemical installations are fitted with nitrogen and steam blow-out systems, which have a network of pipes that are closely connected to the unit and can be used to automatically or manually turn on nitrogen or steam systems when the production process requires them.
    When the equipment is repaired, the device can be blown and replaced to provide safety and security for the repair, when the device fails or accidents, can blow the line, speed up gasification, increase the flow rate, prevent material deposition and blockage, can dilute the material, reduce concentration, slow down the reaction or pressure protection material, can also be used as a diluent and fire extinguishing agent to deal with leakage and fire accidents.
    Alarm device, fire extinguishing device temperature, pressure, flow rate and other process parameters in the control room when abnormal alarm, production equipment and nearby installed flammable gas, toxic gas concentration detection and alarm devices, are important safety devices in chemical production.
    In order to ensure rapid and effective disposal after the accident, many chemical plants have set up water spray system, foam spray system, high-pressure fire hydrant system and fixed fire gun cooling, fire extinguishing system, these fire extinguishing facilities under certain conditions will play an important role in controlling developments.
    pipeline marking chemical production pipeline crisscrossing, complex, in order to facilitate management, in the industry provides the basic identification of pipelines, not only easy for production workers to operate, but also conducive to fire fighting and rescue operations.
    Normally, corrosion-prone material lines are made of stainless steel, not colored, circulating water lines are painted green, acid (alkali) pipelines are painted with color, nitrogen blow-sweeping lines are yellowed, emptying pipelines (emergency discharge lines) are yellowed, fire water supply, fire extinguishing agent conveyor lines are painted red, water vapor lines are coated with insulation layer outsourcing white iron skin, and the main material pipeline is not painted.
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