Propylene is a kind of olefin with a molecular formula of C3H6. It is colorless and transparent, with a density of 0.5486 g/cm3. Propylene is mainly used in the production of polypropylene, polyester, glycol, butanol, etc., and is one of the important raw materials in the chemical industry. In addition, propylene can also be used as a propellant, a blowing agent and other uses.

Propylene is usually produced by refining oil fractions. The crude oil is separated into fractions in the distillation tower, and then the fractions are further refined in the catalytic cracking unit to obtain propylene. Propylene is separated from the reaction gas in the catalytic cracking unit by a set of separation columns and purification columns, and then stored in the storage tank for further use.

Propylene is usually sold in the form of bulk or cylinder gas. For bulk sales, propylene is transported to the customer’s plant by tanker or pipeline. The customer will use propylene directly in their production process. For cylinder gas sales, propylene is filled into high-pressure cylinders and transported to the customer’s plant. The customer will use propylene by connecting the cylinder to the use device with a hose.

The price of propylene is affected by many factors, including crude oil price, supply and demand of propylene market, exchange rate, etc. In general, the price of propylene is relatively high, and it is necessary to pay attention to market conditions at all times when purchasing propylene.

In summary, propylene is an important raw material in the chemical industry, which is mainly produced by refining oil fractions and used in the production of polypropylene, polyester, glycol, butanol, etc. The price of propylene is affected by many factors, and it is necessary to pay attention to market conditions at all times when purchasing propylene.