Process flow of polystyrene production

Process flow of polystyrene production

Process flow of polystyrene production. Many people may not be familiar with polystyrene, which is a composite product, and many people want to know how it is produced. I have collected information about the production process of polystyrene for you. Let's have a look.

Process flow of polystyrene production 1

Divided into three parts

Production of acetylene: Barreled or bagged calcium carbide is crushed by a crusher, sent to a large-scale calcium carbide storage hopper by a belt conveyor, and then put into the hopper from the large-scale calcium carbide storage hopper. After measurement, it is continuously added into an acetylene generator through a calcium carbide bucket, an electric hoist and an electromagnetic vibrator. The crude acetylene gas generated by the hydrolysis of calcium carbide escapes from the top of the acetylene generator and enters the cooling tower and acetylene gas holder through the spray precooler and positive pressure water seal.

The cooled acetylene gas from the generator enters the acetylene compressor for pressurization, and then impurities such as PH3 and H2S in the crude acetylene gas are removed by the purification tower, and then the acid and moisture are removed by the neutralization tower and condenser. The refined acetylene gas is sent to the vinyl chloride synthesis and conversion process.

Vinyl chloride synthesis: HCL——→HCL buffer tank →HCL precooler+acetylene sand seal → mixer → graphite cooler → porous filter → preheater → converter → mercury remover → cooler → water washing combined tower → alkali washing tower → steam-water separator → pre-cooler → single press → post-cooler →

C2H3CL+H2O+ initiator+others → polymerization kettle → slurry tank → slurry storage tank → slurry feed pump → economizer → stripper → slurry pump → economizer → dryer → centrifugal slurry tank → feed pump → centrifuge → stirring up and down →

Process flow of polystyrene production 2 Does the polystyrene foam board produce toxic gas in the production process?

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Because the benzene ring of polystyrene is saturated hydrocarbon, it does not react with other substances. nontoxic

The raw material used in polystyrene foam factory is expandable polystyrene particles, which contain some foaming agents, flame retardants and other substances besides polystyrene. Most of them are hydrocarbons such as pentane Volatile but harmless. I have been making foam for many years. No problem. We use this thing in daily life, food packaging and so on. If it was poisonous, this country would have stopped using it long ago.