Processes for the production of hydrogenated products
View Patent ↗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.
1. A process for making a hydrogenated product comprising:
a. providing a clarified fermentation broth containing an ammonium salt of succinic acid;
b. distilling the broth under super atmospheric pressure at a temperature of >100° C. to about 300° C. to form an overhead that comprises water and ammonia, and a liquid bottoms that comprises SA, and at least about 20 wt % water;
c. cooling and/or evaporating the bottoms to attain a temperature and composition sufficient to cause the bottoms to separate into a liquid portion and a solid portion that is substantially pure SA;
d. separating the solid portion from the liquid portion;
e. recovering the solid portion;
f. hydrogenating the solid portion in the presence of at least one hydrogenation catalyst to produce the hydrogenated product comprising at least one of THF, GBL or BDO; and
g. recovering the hydrogenated product wherein the super atmosphere falls within the range of 50 psi to 367 psi.
2. The process of claim 1 , further comprising purifying the solid portion before step f.
3. The process of claim 1 , further comprising dissolving the solid portion in a solvent before step f to form a solution.
4. The process of claim 1 , wherein step f is conducted such that THF is recovered in a vapor phase.
5. The process of claim 1 , wherein step f is conducted such that BDO is recovered in a liquid phase.
6. The process of claim 1 , wherein the hydrogenation catalyst comprises at least one metal from Group VIII of the Periodic Table of the Elements.
7. The process of claim 6 , wherein the at least one metal consists essentially of:
(i) about 0.5 to about 10% by weight ruthenium, and
(ii) about 2.0 to about 20% by weight rhenium,
based on total weight of the catalyst.
8. The process of claim 7 , further comprising about 0.1 to about 5.0% by weight of tin.
9. The process of claim 1 , wherein the catalyst is supported on at least one selected from the group consisting of carbon, silica, alumina, silica-alumina, silica-titania, titania, titania-alumina, barium sulfate, calcium carbonate and strontium carbonate.
10. The process of claim 1 , wherein the ammonium salt of succinic acid is selected from the group consisting of DAS and MAS.
11. A process for making a hydrogenated product comprising:
a. providing a clarified fermentation broth containing an ammonium salt of succinic acid;
b. adding an ammonia separating solvent and/or water azeotroping solvent to the broth;
c. distilling the broth at a temperature and pressure sufficient to form an overhead that comprises water and ammonia, and a liquid bottoms that comprises SA, and at least about 20 wt % water;
d. cooling and/or evaporating the bottoms to attain a temperature and composition sufficient to cause the bottoms to separate into a liquid portion and a solid portion that is substantially pure SA;
e. separating the solid portion from the liquid portion;
f. recovering the solid portion;
g. hydrogenating the solid portion with hydrogen in the presence of at least one hydrogenation catalyst to produce the hydrogenated product comprising at least one of THF, GBL or BDO; and
h. recovering the hydrogenated product wherein the ammonia separating solvent is selected from diglyme, triglyme, tetraglyme, sulfoxides, amides, dimethylacetamide, sulfones, gamma-butyrolactone, sulfolane, polyethyleneglycol, butoxytriglycol, N-methylpyrolidone, ethers, methyl ethyl ketone.
12. The process of claim 11 , further comprising a purification step before step g.
13. The process of claim 11 , further comprising dissolving the solid portion in a solvent before step g to form a solution.
14. The process of claim 11 , wherein step g is conducted such that THF is recovered in a vapor phase.
15. The process of claim 11 , wherein step g is conducted such that BDO is recovered in the liquid phase.
16. The process of claim 15 , wherein said hydrogenation catalyst comprises of at least one metal from Group VIII of the Periodic Table of the Elements.
17. The process of claim 11 , wherein the at least one metal consists essentially of:
(i) from about 0.5 to about 10% by weight ruthenium, and
(ii) from about 2.0 to about 20% by weight rhenium, the percentages being based on total weight of the catalyst.
18. The process of claim 17 , further comprising from about 0.1 to about 5.0% by weight of tin.
19. The process of claim 11 , wherein the catalyst supported on at least one selected from the group consisting of carbon, silica, alumina, silica-alumina, silica-titania, titania, titania-alumina, barium sulfate, calcium carbonate and strontium carbonate.
20. The process of claim 11 , wherein the ammonium salt of succinic acid is selected from the group consisting of DAS and MAS.