The Production Process of Salai, ext.

Salai, also known as PVC (polyvinyl chloride), is a synthetic plastic polymer that is widely used in the chemical industry.
The production process of Salai involves several steps, including the preparation of raw materials, the polymerization reaction, and the processing of the resulting polymer.

1. Preparation of Raw Materials:
   The raw materials used in the production of Salai are chlorine gas, ethylene gas, and a catalyst, such as manganese dioxide.
   These raw materials are carefully measured and mixed together in the correct proportions to ensure the proper reaction.
   
2. The Polymerization Reaction:
   The polymerization reaction is the heart of the Salai production process.
   In this step, the raw materials are subjected to high temperatures and pressures in the presence of a catalyst.
   The chlorine gas and ethylene gas react to form hydrogen chloride and vinyl chloride monomer (VCM).
   The VCM then polymerizes to form a long chain of Salai molecules.
   
3. Processing of Polymer:
   After the polymerization reaction is complete, the Salai is collected and processed further.
   This includes steps such as washing, drying, and cutting.
   The resulting Salai is a white, brittle material that is ready for use in a variety of applications.
   
4. Purification of Salai:
   In order to make Salai suitable for use in the chemical industry, it must be purified of any impurities.
   This is typically done through a process of distillation, where the Salai is heated and the impurities are separated from the pure material.
   
5. Formulation of Salai:
   Finally, the purified Salai is formulated into the desired product.
   This can include adding other chemicals to make it more flexible or stable, or adding pigments to make it a certain color.
   The resulting product is then packaged and prepared for shipment to customers.
   

In conclusion, the production process of Salai involves several steps, including the preparation of raw materials, the polymerization reaction, the processing of the resulting polymer, and the purification and formulation of the final product.
By carefully controlling each step of the process, it is possible to produce high-quality Salai that meets the needs of the chemical industry.