摘要:
Processes include providing a clarified diammonium succinate (DAS)- or monoammonium succinate (MAS)- containing fermentation broth; distilling the broth of an overhead that includes water and ammonia, and a liquid bottoms that includes SA, and at least about 20 wt% water; cooling the bottoms to a temperature sufficient to cause the bottoms to separate into a liquid portion in contact with a solid portion that is substantially pure SA; separating the solid portion from the liquid portion; and converting the solid portion to produce nitrogen containing compounds such as diamino butane (DAB), succinic dinitrile (SDN), succinic amino nitrile (SAN) or succinamide (DAM) and downstream products.
摘要:
Processes for making monoammonium succinate (MAS) and/or succinic acid (SA) from either a clarified diammonium succinate (DAS)-containing fermentation broth or a clarified MAS-containing fermentation broth include (a) distilling the broth to form an overhead that includes water and optionally ammonia and a liquid bottoms that includes MAS or SA; (b) cooling and/or evaporating the bottoms and optionally adding an antisolvent to the bottoms to attain a temperature and composition sufficient to cause the bottoms to produce a solid portion that contains MAS or SA in contact with a liquid portion; (c) separating the solid portion from the liquid portion; and (d) recovering the solid portion.
摘要:
A process for making a hydrogenated product includes providing a clarified DAS-containing fermentation broth; distilling the broth under super atmospheric pressure at a temperature of >100°C to about 300°C to form an overhead that includes water and ammonia, and a liquid bottoms that includes SA, and at least about 20 wt% water; cooling the bottoms to a temperature sufficient to cause the bottoms to separate into a liquid portion in contact with a solid portion that is substantially pure SA; separating the solid portion from the liquid portion; recovering the solid portion; hydrogenating the solid portion in the presence of at least one hydrogenation catalyst to produce the hydrogenated product including at least one of THF, GBL or BDO; and recovering the hydrogenated product.
摘要:
Yeast cells having a reductive TCA pathway from pyruvate or phosphoenolpyruvate to succinate, and which include at least one exogenous gene overexpressing an enzyme in that pathway, further contain an exogenous transhydrogenase gene.
摘要:
Processes for making caprolactam (CL) from monoammonium adipate (MAA) and/or adipic aicd (AA) obtained from a clarified diammonium adipate-containing (DAA- containing) fermentation broth or MAA-containing fermentation broth and converting the MAA or AA to the CL with hydrogen in the presence of a catalyst at selected temperatures and pressures.
摘要:
Processes for making pyrrolidones include making MAS and/or SA from a clarified DAS- and/or MAS-containing fermentation broth and converting the MAS or SA to the pyrrolidones, typically with catalysts at selected temperatures and pressures.
摘要:
Processes that make nitrogen-containing compounds include converting succinic acid (SA) or monoammonium succinate (MAS) derived from a diammonium succinate (DAS)- or MAS-containing fermentation broth to produce such compounds including diaminobutane (DAB), succinic dinitrile (SDN), succinic amino nitrile (SAN), succinamide (DAM), and related polymers.
摘要:
A process for making HOOC-R-COOH compound acid from a clarified NH 4 + - OOC- R-COO - NH 4 + compound-containing fermentation broth including distilling the broth under super atmospheric pressure at a temperature of >I00°C to about 250°C to form an overhead that comprises water and ammonia, and a liquid bottoms that Includes HOOC-R-COOH compound acid, and at least about 20 wt%. water; cooling the. bottoms to a temperature sufficient to cause the bottoms to separate into a liquid portion in contact with a solid portion that is substantially pure HOOC-R-COOH compound acid; separating the solid portion from the liquid portion; and recovering the solid portion.
摘要:
A method of removing color bodies from a fermentation broth includes precipitating a color-forming impurity (color body) by adjusting the fermentation broth to a pH greater than about 13; filtering out precipitated color-forming impurities from the broth; and bleaching a second color impurity by treating the broth with an oxidizing agent.