Chemical engineers design, construct and operate process plants (fractionating columns pictured)Chemical engineering is a branch of engineering that uses principles of chemistry, physics, mathematics, biology, and economics to efficiently use, produce, transform, and transport chemicals, materials, and energy. A chemical engineer designs large-scale processes that convert chemicals, raw materials, living cells, microorganisms, and energy into useful forms and products.Chemical engineers are involved in many aspects of plant design and operation, including safety and hazard assessments, process design and analysis, control engineering, chemical reaction engineering, biological engineering, construction specification, and operating instructions. Chemical engineering degree is directly linked with all the majors of various engineering disciplines.

化學工程師設計、建造和操作工藝裝置（如圖所示的分餾塔）化學工程是工程學的一個分支，它利用化學、物理、數學、生物學和經濟學的原理來有效地使用、生產、轉化和運輸化學品、材料和能源。一位化學工程師設計了將化學物質、原材料、活細胞、微生物和能量轉化為有用形式和產品的大規模工藝。化學工程師參與了工廠設計和運行的許多方面，包括安全和危害評估、工藝設計和分析、控制工程、化學反應工程、生物工程、施工規范和操作說明。化學工程學位與各工程專業各專業直接掛鉤。