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 Butanediol, including:
- What is Butanediol
- How to make Butanediol
- Butanediol uses and applications
This page presents brief synopsis of Butanediol 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
1,4-Butanediol Manufacture from Bio-Succinic Acid
The compound 1,4-butanediol (BDO) is a versatile intermediate for the chemical industry. Its largest derivative product is tetrahydrofuran (THF), which is used to make spandex fibers, resins, solvents and printing inks. The second largest product is polybutylene terephthalate (PBT), which is used to make high-performance materials, electronics and automotive equipment.
BDO can be produced from different technologies and raw materials. The conventional method for manufacturing BDO is the Reppe process, starting from acetylene. Other processes use propylene oxide, maleic anhydride, 1,3-butadiene or n-butane as starting points. The newest technologies being developed for BDO are bio-based pathways, which mostly rely on bio-based succinic acid derived from biomass or a sugar substrate.
Succinic acid is a platform chemical that can be used to produce many products. However, its high cost of production from petroleum raw sources limits its use to specific applications (such as pharmaceuticals and food additives). According to the U.S. Dept. of Energy (DOE), bio-succinic acid is a renewable building-block chemical with great potential for the future.
The process depicted in the flowsheet was compiled based on a U.S. patent published by BioAmber Inc. (Montreal, Canada; www.bio-amber.com; U.S. patent no. 2011/0245515). The patent discloses details about the initial reaction, while the separation process was conceived by Intratec and is based on well-known practices.
A solution of bio-succinic acid in water is pre-heated and sent to the fixed-bed hydrogenation reactor. Hydrogen is compressed and also fed in excess to the reactor. The process uses a bimetallic catalyst consisting of metals (including ruthenium, rhenium, tin and others) on a carbon support.
The exothermic reaction product is ...
The product from the flash vessels is ...