Intratec Chemical Process Library is the first free online encyclopedia of chemical process technologies. Our Library covers not only processes description themselves, but also the economics surrounding chemicals production, providing real-world knowledge on the production of several chemical commodities. Click here to check all chemicals covered.
In this page you will find free data about Aniline, including:
- What is Aniline
- How to make Aniline
- Aniline uses and applications
This page presents brief synopsis of Aniline production technology, describing, in a concise way, relevant technical and economic aspects. Each manufacturing process description will consist of:
- Major process steps
- Simplified, schematic flow diagram & key equipment
- Important safety or environmental considerations
- Economic perspective, comprising capital expenditures and/or operating expenses
All content from Intratec's Chemical Process Library was produced based on reports published by Intratec. To learn more about Aniline production processes presented below and others examined in Intratec reports, click here.
Aniline Manufacture from Nitrobenzene (Liquid-Phase)
Aniline, also known as amino benzene or benzenamine, is an aromatic amine with the formula C6H5NH2. It is mainly used as a raw material in the production of methylene diphenyl diisocyanate (MDI), an intermediate in polyurethane manufacture. Aniline is also used as an intermediate for dyes and pigments, explosives, agricultural chemicals and pharmaceuticals.
The following paragraphs describe aniline production from nitrobenzene via a liquid-phase hydrogenation process, similar to the one owned by DuPont. The process can be divided into three main parts: nitrobenzene hydrogenation, dehydration and purification.
Nitrobenzene (mononitrobenzene or MNB) is fed with hydrogen into a plug-flow tubular reactor containing a noble metal catalyst supported on carbon. The hydrogenation is carried out in the liquid phase and the nitrobenzene conversion to aniline is near 100% in a single pass.
The reactor effluent is ...
In the purification area, heavy impurities ...