Propylene oxide is mainly used in the production of polyether polyols. Polyether polyol is derived from propylene oxide, an organic material containing two or more hydroxyl groups, and some polyether varieties contain micron-sized suspensions of polymer science particles. propylene oxide is a toxic substance, so the following points should be noted during operation
1. Safety of Propylene oxide operation
2. Storage safety of Propylene oxide
Safety of Propylene oxide operation
(1) When opening the propylene oxide container, make sure the working area is well ventilated and no spark or ignition source exists; avoid letting the released vapour enter the air in the working area. The workshop for the production and storage of propylene oxide should have reliable fireproof and explosion-proof measures. In case of fire, dry powder fire extinguishers, carbon dioxide fire extinguishers and sand should be used to extinguish the fire.
(2) When the propylene oxide system leaks, stand at the upwind entrance and wear a good gas mask at the same time to work.
(3) Keep the water pressure and oil pressure of the equipment normal and the relevant pipeline should be smooth. Maintain the equipment and eliminate the phenomena of running, bubbling, dripping and leaking, so that the equipment is in good condition.
(4) production area, open fire and may produce open fire, spark operations are strictly prohibited. Production needs or during maintenance need to start the fire, must go through fire approval procedures.
(5) The cleaning sewage of the production equipment and the washing water of the internal flooring of the production workshop must be discharged into the emergency pool and only after the treatment is qualified.
Storage safety of Propylene oxide
Because of the characteristics of propylene oxide and the shortcomings of the traditional storage method, such as respiratory loss, environmental pollution and fire and explosion, the storage process adopts the closed storage method and the new technology of closed storage from the aspects of storage, loading and unloading, temperature control, tank design, equipment selection and fire and explosion prevention. After the realization of the closed operation, the loss of propylene oxide in the storage process and the pollution to the surrounding environment are reduced, and safe storage and handling are ensured,
(1) Propylene oxide is stored in a cool, well-ventilated special warehouse or storage tank, away from fire and heat sources. The temperature of the storage room should not exceed 29℃ and keep the container sealed.
(2) Propylene oxide should be stored separately from oxidizers, acids, alkali metals, etc., do not mix storage. Use explosion-proof lighting and ventilation facilities. Prohibit the use of spark-prone machinery and tools. The storage area should be equipped with emergency treatment equipment for leaks and suitable shelter materials. Set cofferdam around the propylene oxide storage tank, the volume of which is equal to the volume of the storage tank.
(3) Pay attention to lightning protection and anti-static. Storage tanks in the plant shall be equipped with lightning protection and anti-static facilities according to the provisions of the Code for Lightning Protection Design of Buildings.
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