石油化學(xué)工業(yè)，簡(jiǎn)稱石油化工。一般指以石油和天然氣為原料的化學(xué)工業(yè)。范圍很廣，產(chǎn)品很多。原油經(jīng)過裂解（裂化）、重整和分離，提供基礎(chǔ)原料,如乙烯、丙烯、丁烯、丁二烯、苯、甲苯、二甲苯、萘等。從這些基礎(chǔ)原料可以制得各種基本有機(jī)原料如甲醇、甲醛、乙醇、乙醛、醋酸、異丙醇、丙酮、苯酚等。Petroleum chemical industry, abbreviated as petrochemical industry. Generally refers to the chemical industry that uses petroleum and natural gas as raw materials. The scope is very broad and there are many products. Crude oil undergoes cracking (cracking), reforming and separation to provide basic raw materials such as ethylene, propylene, butene, butadiene, benzene, toluene, xylene, naphthalene, etc. From these basic raw materials, various basic organic raw materials such as methanol, formaldehyde, ethanol, acetaldehyde, acetic acid, isopropanol, acetone, phenol, etc. can be produced.