Processes for producing butanediol (BDO), diaminobutane (DAB), succinic dinitrile (SDN) and succinamide (DAM)

Processes that, make nitrogen-containing compounds include converting succinic acid (SA) or monoammonium succinate (MAS) derived from a diammoniurn succinate (DAS)- or MAS-containing fermentation broth to produce such compounds Including diammobmane (DAB), succinic dinitrile (SDN), succinic amino nitrile (SAN), succinamide (DAM), and related polymers.

Processes for producing monoammonium succinate from fermentation broths containing diammonium succinate, monoammonium succinate and/or succinic acid, and conversion of monoammonium succinate to succinic acid

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.

Processes for the production of hydrogenated products and derivatives thereof

Processes for making hydrogenated products including caprolactame (CL), caprolactone (CLO) or 1,6-hexanediol (HDO) and derivative thereof from monoammonium adipate (MAA) and/or adipic acid (AA) obtained from a clarified diammonium adipate-containing (DAA-containing) fermentation broth or monoammonium adipate-containing (MAA-containing) fermentation broth.

Processes for the production of tetrahydrofuran, gamma - butyrolactone and/or butanediol from salts of succinic acid

A process for making a hydrogenated product includes providing a clarified DAS-containing fermentation broth, distilling the broth to form an overhead that includes water and ammonia, and a liquid bottoms that includes MAS, at least some DAS, and at least about 20 wt% water, 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 separate into a DAS-containing liquid portion and a MAS-containing solid portion that is substantially free of DAS, separating the solid portion from the liquid portion, recovering the solid portion, hydrogenating the second 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 recovering the hydrogenated product.

Processes for producing diaminobutane (dab), succinic dinitrile (sdn) and succinamide (dam)

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.

Processes for producing diaminobutane (dab), succinic dinitrile (sdn) and succinamide (dam)

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.

Processes for the production of tetrahydrofuran, gamma-butyrolactone and/or butanediol from salts of succinic acid

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 higher than 100 DEG C to about 300 DEG 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.

Processes for removing color during production of runway deicer

Methods for preventing or reducing the formation of scale in a wet-process phosphoric acid production process by intermixing a water-soluble functional organic reagent with a phosphoric acid at one or more step of the phosphoric acid production process in an amount sufficient to prevent or reduce at least one species of scale are provided.

Processes for producing hexamethylenediamine (hmd), adiponitrile (adn), adipamide (adm) and derivatives thereof

Processes for producing nitrogen containing compounds include producing hexamethylenediamine (HMD), adiponitrile (ADN), adipamide (ADM) and derivatives thereof from adipic acid (AA) obtained from fermentation broths containing diammonium adipate (DAA) or monoammonium adipate (MAA).

Processes for producing caprolactam and derivatives thereof from fermentation broths containing diammonium adipate or monoammonium adipate

Processes for producing caprolactam (CL) and derivatives thereof from adipic acid (AA) obtained from fermentation broths containing diammonium adipate (DAA) or monoammonium adipate (MAA).

Processes for the production of pyrrolidones

Processes for making pyrrolidones include providing a clarified diammonium succinate (DAS)-containing and/or monoammonium succinate (MAS)-containing fermentation broth; distilling the broth under super atmospheric pressure at a temperature of greater than 100 DEG C to about 300 DEG 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 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; separating the solid portion from the liquid portion; and converting the solid SA portion to pyrrolidones.

Processes for the production of hydrogenated products and derivatives thereof

A process for making a hydrogenated product comprising caprolactone (CLO) and 1,6-hexanediol (HDO) and derivatives thereof from adipic acid (AA) obtained from fermentation broths containing diammonium adipate (DAA) or monoammonium adipate (MAA).

Control of a process for the purification of (meth)acrylic acid using on-line, near IR analysis

An improved process for the manufacture of technical grade (meth)acrylic acid, e.g., acrylic acid, the process comprising producing a hydrated reaction product from the gas-phase oxidation of at least one (meth)acrylic acid precursor, e.g., propylene, followed by first dehydrating and then concentrating the reaction product, the improvement comprising controlling at least one of the water, acetic acid and (meth)acrylic acid content of the reaction product during the purification of the reaction product using on-line, near IR spectroscopy.

Processes for producing caprolactam and derivatives thereof from fermentation broths containing diammonium adipate, monoammonium adipate and/or adipic acid

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.

Processes for producing hexamethylenediamine (hmd), adiponitrile (adn), adipamide (adm) and derivatives thereof

Processes include producing hexamethylenediamine (HMD), adiponitrile (ADN), adipamide (ADM) and derivatives thereof from fermentation broths containing diammonium adipate (DAA) monoammonium adipate (MAA) and/or adipic acid (AA).

Processes for the production of hydrogenated products

A process for making a hydrogenated product includes providing a clarified DAS-containing fermentation broth, distilling the broth to form an overhead that includes water and ammonia, and a liquid bottoms that includes MAS, at least some DAS, and at least about 20 wt % water, 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 separate into a DAS-containing liquid portion and a MAS-containing solid portion that is substantially free of DAS, separating the solid portion from the liquid portion, recovering the solid portion, hydrogenating the second 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 recovering the hydrogenated product.

Processes for the production of hydrogenated products

A process for making a hydrogenated product includes providing a clarified DAS-containing fermentation broth, distilling the broth to form an overhead that includes water and ammonia, and a liquid bottoms that includes MAS, at least some DAS, and at least about 20 wt % water, 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 separate into a DAS-containing liquid portion and a MAS-containing solid portion that is substantially free of DAS, separating the solid portion from the liquid portion, recovering the solid portion, hydrogenating the second 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 recovering the hydrogenated product.

PROCESSES FOR PRODUCING CAPROLACTAM AND DERIVATIVES THEREOF FROM FERMENTATION BROTHS CONTAINING DIAMMONIUM ADIPATE, MONOAMMONIUM ADIPATE AND/OR ADIPIC ACID

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. 1. A process for producing CL from a clarified DAA-containing fermentation broth , comprising:(a) distilling the broth to firm an overhead that comprises water and ammonia, and a liquid bottoms that comprises MAA, at least some DAA, and at least about 20 wt % water;{'sub': 'N', '(b) cooling andfor evarating the bottoms, and optionally adding an antisolvmt to the bottoms, to attain a temperature and composition sufficient to cause the bottoms to separate into a DAA-containing liquid portion and a MAA-containing, solid portion that is substantially free of DAA;'}(c) separating the solid portion from the liquid portion;(d) recovering the solid portion; and(e) contacting at least a portion of the solid portion with hydrogen, optionally in the presence of a solvent, in the presence of to hydrogenation catalyst and, optionally an ammonia source, at a temperature of about 25° C. to about 500° C. and a pressure of about 0.5 to about 40 MPa to produce the CL.2. A process for producing CI from a DAA-comairring fermentation broth , comprising:(a) distilling the broth to form a first overhead that includes water and ammonia, and a first liquid bottoms that includes MAA, at least some DAA, and at least about 20 wt % water;(b) cooling andlor evaporating the bottoms, and optionally adding an antisolvent to the bottoms, to attain a temperature and composition sufficient to cause the bottoms to separate into a DAA-containing liquid portion and a MAA-containing solid portion that is substantially free of DAA;(c) separating the solid portion from the liquid portion;(d) recovering the solid portion;(e) dissolvine the solid portion in Water to ...

PROCESSES FOR PRODUCING CAPROLACTAM AND DERIVATIVES THEREOF FROM FERMENTATION BROTHS CONTAINING DIAMMONIUM ADIPATE OR MONOAMMONIUM ADIPATE

Processes for producing caprolactam (CL) and derivatives thereof from adipic acid (AA) obtained from fermentation broths containing diammonium adipate (DAA) or monoammonium adipate (MAA). 1. A process for producing CL from a clarified DAA-containing fermentation broth or MAA-containing fermentation broth comprising:(a) 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 AA and at least about 20 wt % water;(b) 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 AA;(c) separating the solid portion from the liquid portion; and(d) contacting at least a part of the solid portion with hydrogen, optionally in the presence of a solvent, in the presence of a hydrogenation catalyst and an ammonia source, at a temperature of about 25° C. to about 500° C. and a pressure of about 0.5 to about 40 MPa to produce the CL.2. A process for producing CL from a clarified DAA-containing fermentation broth or MAA-containing fermentation broth comprising:(a) adding an ammonia separating solvent and/or a water azeotroping solvent to the broth;(b) distilling the broth at a temperature and pressure sufficient to form an overhead that comprises water and ammonia, and a liquid bottoms that comprises AA 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 AA;(d) separating the solid portion from the liquid portion; and(e) contacting at least a part of the solid portion with hydrogen, optionally in the presence of a solvent, in the presence of a hydrogenation catalyst and an ammonia source, at a temperature of about 25° C. to about 500° C. and a ...

PROCESSES FOR PRODUCING NH4+ -OOC-R-COOH COMPOUNDS FROM FERMENTATION BROTHS CONTAINING NH4+ -OOC-R-COO- NH4+ COMPOUNDS AND/OR HOOC-R-COOH COMPOUND ACIDS, AND CONVERSION OF NH4+ -OOC -R-COOH COMPOUNDS TO HOOC-R-COOH COMPOUND ACIDS

A process for making a NHOOC—R—COOH compound from a clarified NHOOC—R—COO′NH compound-containing fermentation broth includes (a) distilling the broth to form an overhead that includes water and ammonia, and a liquid bottoms that includes a NHOOC˜R˜COOH compound, at least some of a NHQOC—R—COO″NH compound, and at least about 20 wt % water; (b) cooling the bottoms to a temperature sufficient to cause the bottoms to separate into a NHOOC—R˜C00′NH compound-containing liquid portion in contact with a NHOOC—R—COOH compound-containing solid portion that is substantially free of the NHOOC—R—COO″NH compound; (c) separating the solid portion from the liquid portion; and (d) recovering the solid portion. 1. A process for making NHOOC—R—COOH from a clarified NHOOC—R—COONH-containing fermentation broth , wherein R may be but is not limited to , CH , CH═CH , (CH) , C(CH)═CH , CH═C—CH , CH═CH—CH═CH , (CH)and (CH) , comprising:{'sub': 4', '4', '4, 'sup': +−', '+−', '−', '+, '(a) distilling the broth to for an overhead that comprises water and ammonia, and a liquid bottoms that comprises NHOOC—R—COOH at least some NHOOC—R—COONH, and at least about 20 wt % water;'}{'sub': 4', '4', '4', '4', '4, 'sup': +', '−', '+', '+−', '+−', '−', '+, '(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 separate into a NH—OOC—R—COONH-containing liquid portion and a NHOOC—R—COOH—-containing solid portion that is substantially free of NHOOC—R—COONH;'}(c) separating the solid portion from the liquid portion; and(d) recovering the solid portion.2. The process of claim 1 , wherein the solid portion is substantially free of corresponding amic acids claim 1 , amides and imides.3. The process of claim 1 , wherein distilling the broth is carried out in the presence of an ammonia separating solvent which is at least one selected from the group consisting of diglyme claim 1 , triglyme claim 1 ...

PROCESSES FOR PRODUCING DIAMINOBUTANE (DAB), SUCCINIC DINITRILE (SDN) AND SUCCINAMIDE (DAM)

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. 1. A process for making nitrogen containing compounds of SA comprising:(a) providing a clarified DAS-containing fermentation broth;(b) distilling the broth under super atmospheric pressure at a temperature of >100° C. to about 250° 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) (1) contacting at least as part of the solid portion with hydrogen and an ammonia source in the presence of at least one hydrogenation catalyst to produce DAB, (2) dehydrating at least part of the solid portion to produce SDN or (3) dehydrating at least part of the solid portion to produce DAM; and(f) recovering the DAB, SDN or DAM.2. A process for making nitrogen containing compounds of SA comprising:(a) providing a clarified DAS-containing fermentation broth;(b) adding an ammonia separating 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 ...

PROCESSES FOR THE PRODUCTION OF PYRROLIDONES

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. 7. The processes of claim 1 , wherein the distillations arc carried out in the presence of an ammonia separating solvent which is at least one selected from the group consisting of diglyme claim 1 , triglyme claim 1 , tetraglyme claim 1 , sulfoxides claim 1 , amides claim 1 , sulfones claim 1 , polyethyleneglycol (PEG) claim 1 , butoxytriglycol claim 1 , N-methylpyrolidone (NMP) claim 1 , ethers claim 1 , and methyl ethyl ketone (MEK) or in the presence of a water azeotroping solvent which is at least one selected from the group consisting of toluene claim 1 , xylene claim 1 , methylcyclohexane claim 1 , methyl isobutyl ketone claim 1 , hexane claim 1 , cyclohexane and heptane.14. The processes of claim 2 , wherein the distillations are carried out in the presence of an ammonia separating solvent which is at least one selected from the group consisting of diglyme claim 2 , triglyme claim 2 , tetraglyme claim 2 , sulfoxides claim 2 , amides claim 2 , sulfones claim 2 , polyethyleneglycol (PEG) claim 2 , butoxytriglycol claim 2 , N-methylpyrolidone (NMP) claim 2 , ethers claim 2 , and methyl ethyl ketone (MEK) or in the presence of a water azeotroping solvent which is at least one selected from the group consisting of toluene claim 2 , xylene claim 2 , methylcyclohexane claim 2 , methyl isobutyl ketone claim 2 , hexane claim 2 , cyclohexane and heptane claim 2 ,15. The processes of claim 3 , wherein the distillations are carried out in the presence of an ammonia separating solvent which is at least one selected from the group consisting of diglyme claim 3 , triglyme claim 3 , tetraglyme claim 3 , sulfoxides claim 3 , amides claim 3 , sulfones claim 3 , polyethyleneglycol (PEG) claim 3 , butoxytriglycol claim 3 , N-methylpyrolidone ...

PROCESSES FOR THE PRODUCTION OF HYDROGENATED PRODUCTS AND DERIVATIVES THEREOF

Processes for making hydrogenated products including caprolactame (CL) caprolactone (CLO) or 1,6-hexanediol (HDO) and derivative thereof from monoammonium adipate (MAA) and/or adipic acid (AA) obtained from a clarified diammonium adipate-containing (DAA-containing) fermentation broth or monoammonium adipate-containing (MAA-containing) fermentation broth. 1. A process for making a hydrogenated product from a clarified DAA-containing fermentation broth comprising;(a) distilling the broth to form an overhead that comprises water and ammonia, and a liquid bottoms that comprises MAA, at least some DAA, and at least about 20 wt % water;(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 separate into a DAA-containing liquid portion and a MAA-containing solid portion that is substantially free of DAA;(c) separating the solid portion from the liquid portion;(d) recovering the solid portion;(e) hydrogenating the solid portion in the presence of at least one hydrogenation catalyst to produce the hydrogenated product comprising at least one of CL, CLO or HDO; and(f) recovering the hydrogenated product.2. A process for making a hydrogenated product from a DAA-containing fermentation broth comprising:(a) distilling the broth to form a first overhead that includes water and ammonia, and a first liquid bottoms that includes MAA, at least some DAA, and at least about 20 wt % water;(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 separate into a DAA-containing liquid portion and a MAA-containing solid portion that is substantially free of DAA;(c) separating the solid portion from the liquid portion;(d) recovering the solid portion;(e) dissolving the solid portion in water to produce an aqueous MAA solution;(f) distilling the aqueous MAA ...

PROCESSES FOR PURIFICATION OF SUCCINIC ACID VIA DISTILLATION

Processes for removing color bodies from crude succinic acid comprising distillation of crude succinic acid and collecting the distillate in a water-containing receiver. The color bodies substantially remain in the distillation bottoms and the purified succinic acid in the water-containing receiver is substantially free of color bodies. 1. A process for removing color bodies from crude SA comprising:a) providing crude SA;b) distilling the crude SA such that the color bodies substantially remain as distillation bottoms resulting from a distillation vessel; andc) recovering in a water-containing receiver purified SA substantially free of color bodies.2. The process of claim 1 , wherein the crude SA is molten.3. The process of claim 1 , wherein an amount of water in the water-containing receiver is greater than or equal to the amount of crude SA.4. The process of claim 3 , wherein an amount of water in the water-containing receiver is greater than or equal to twice the amount of the crude SA.5. The process of claim 1 , wherein temperature of the water in water-containing receiver is below about 30° C.6. The process of claim 1 , wherein the water-containing receiver is agitated.7. The process of claim 6 , wherein the water-containing receiver is agitated with a stirrer.8. The process of claim 6 , wherein the water-containing receiver is agitated by a pump around loop.9. The process of claim 8 , wherein a return line of the pump around loop is sprayed into the water-containing receiver forming a quench zone.10. The process of claim 1 , wherein a portion SA dehydrates to succinic anhydride.11. The process of claim 1 , wherein step (b) is conducted under vacuum.12. The process of claim 11 , wherein absolute pressure is about 500 to about 1 torr.13. The process of claim 11 , wherein absolute pressure is about 100 to about 50 torr.14. The process of claim 1 , wherein a Yellowness index in methanol of the crude SA is greater than about 10.15. The process of claim 14 , wherein ...

Processes for the production of hydrogenated products and derivatives thereof

A process for making a hydrogenated product comprising caprolactone (CLO) and 1,6-hexanediol (HDO) and derivatives thereof from adipic acid (AA) obtained from fermentation broths containing diammonium adipate (DAA) or monoammonium adipate (MAA).

PROCESSES FOR PRODUCING DIAMINOBUTANE (DAB), SUCCINIC DINITRILE (SDN) AND SUCCINAMIDE (DAM)

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. 1. A process for making nitrogen containing compounds , comprising:(a) providing a clarified DAS-containing fermentation broth;(b) distilling the broth to form an overhead that comprises water and ammonia, and a liquid bottoms that comprises MAS, at least some DAS, and at least about 20 wt % water;(c) 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 separate into a DAS-containing liquid portion and a MAS-containing solid portion that is substantially free of DAS;(d) separating at least part of the solid portion from the liquid portion; (2) dehydrating at least a part of the solid portion to produce SDN; or', '(3) dehydrating at least a part of the solid portion to produce DAM; and, '(e) (1) contacting the solid portion with hydrogen and optionally an ammonia source in the presence of at least one hydrogenation catalyst to produce DAB; or'}(f) recovering the DAB, SDN or DAM.2. A process for making nitrogen containing compounds , comprising:(a) providing a clarified DAS-containing fermentation broth;(b) distilling the broth to form a first overhead that includes water and ammonia, and a first liquid bottoms that includes MAS, at least some DAS, and at least about 20 wt % water;(c) 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 separate into a DAS-containing liquid portion and a MAS-containing solid portion that is substantially free of DAS;(d) separating the solid portion from the ...

Processes for the production of pyrrolidones

Processes for making pyrrolidones include providing a clarified diammonium succinate (DAS)-containing and/or monoammonium succinate (MAS)-containing fermentation broth; distilling the broth under super atmospheric pressure at a temperature of greater than 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 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; separating the solid portion from the liquid portion; and converting the solid SA portion to pyrrolidones.

Method of inhibiting polymerization and fouling in acrylic acid and acrylate processes

The method of inhibiting the polymerization of a mono-ethylenically unsaturated carboxylic acid, anhydride, ester or neutralized or partially neutralized salt, e.g., an acrylic acid or ester, in an aqueous solution and in the presence of oxygen, the method comprising the step of mixing with the aqueous solution an inhibitor comprising (i) at least 50 ppm of an N-oxyl compound, e.g., 4-hydroxy-TEMPO, and (ii) a manganese ion, the N-oxyl compound and manganese ion present in a N-oxyl compound to manganese ion weight ratio of 50:1 to less than 100:1. based on the mono-ethylenically unsaturated carboxylic acid, anhydride, ester or salt.

PROCESSES FOR PRODUCING HOOC-R-COOH COMPOUND ACIDS FROM FERMENTATION BROTHS CONTAINING NH4+ -OOC-R-COO-NH4+ COMPOUNDS

A process for making HOOC—R—COOH compound acid from a clarified NHOOC—R—COONH 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. 1. A process for making HOOC—R—COOH from a clarified NHOOC—R—COONH-containing fermentation broth comprising:(a) 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 HOOC—R—COOH, and at least about 20 wt % water;(b) 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 HOOC—R—COOH; and(c) separating the solid portion from the liquid portion.2. The process of claim 1 , wherein the liquid bottoms contains at least some NHOOC—R—COOH and/or the solid portion is substantially free of auric acid claim 1 , amide and imide of HOOC—R—COOH compound acid.3. The process of claim 1 , further comprising recycling the HOOC—R—COOH and water and claim 1 , optionally claim 1 , NHOOC—R—COOH from the liquid bottoms to the clarified broth.4. The process of claim 1 , wherein distilling the broth is carried out in the presence of an ammonia separating solvent which is at least one selected from the group consisting of diglyme claim 1 , triglyme claim 1 , tetraglyme claim 1 , sulfoxides claim 1 , amides claim 1 , sulfones claim 1 , polyethyleneglycol (PEG) claim 1 , ...

Processes for producing hexamethylenediamine (hmd), adiponitrile (adn), adipamide (adm) and derivatives thereof

Processes for producing nitrogen containing compounds include producing hexamethylenediamine (HMD), adiponitrile (ADN), adipamide (ADM) and derivatives thereof from adipic acid (AA) obtained from fermentation broths containing diammonium adipate (DAA) or monoammonium adipate (MAA).

PROCESSES FOR PRODUCING BUTANEDIOL (BDO), DIAMINOBUTANE (DAB), SUCCINIC DINITRILE (SDN) AND SUCCINAMIDE (DAM)

Processes that, make nitrogen-containing compounds include converting succinic acid (SA) or monoammonium succinate (MAS) derived from a diammoniurn succinate (DAS)- or MAS-containing fermentation broth to produce such compounds Including diammobmane (DAB), succinic dinitrile (SDN), succinic amino nitrile (SAN), succinamide (DAM), and related polymers. 1. A process for making nitrogen containing compounds , comprising:(a) providing a clarified DAS-containing fermentation broth;(b) distilling the broth to form an overhead that comprises water and ammonia, and a liquid bottoms that comprises MAS, at least some DAS, and at least about 20 wt % water;(c) 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 separate into a DAS-containing liquid portion and a MAS-containing solid portion that is substantially free of DAS; (e) contacting the solid portion with at least one hydrogenation catalyst to produce BDO;', '(f) aminating the BDO to produce DAB; and, '(d) separating at least part of the solid portion from the liquid portion;'}(g) recovering the DAB.2. A process for making nitrogen containing compounds , comprising:(a) providing a clarified DAS-containing fermentation broth;(b) distilling the broth to form a first overhead that includes water and ammonia, and a first liquid bottoms that includes MAS, at least some DAS, and at least about 20 wt % water;(c) 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 separate into a DAS-containing liquid portion and a MAS-containing solid portion that is substantially free of DAS;(d) separating the solid portion from the liquid portion;(e) recovering the solid portion;(f) dissolving the solid portion in water to produce an aqueous MAS solution;(g) distilling the aqueous MAS solution at a temperature and ...

METHOD OF INHIBITING POLYMERIZATION AND FOULING IN ACRYLIC ACID AND ACRYLATE PROCESSES

The method of inhibiting the polymerization of a mono-ethylenically unsaturated carboxylic acid, anhydride, ester or neutralized or partially neutralized salt, e.g., an acrylic acid or ester, in an aqueous solution and in the presence of oxygen, the method comprising the step of mixing with the aqueous solution an inhibitor comprising (i) at least 50 ppm of an N-oxyl compound, e.g., 4-hydroxy-TEMPO, and (ii) a manganese ion, the N-oxyl compound and manganese ion present in a N-oxyl compound to manganese ion weight ratio of 50:1 to less than 100:1 based on the mono-ethylenically unsaturated carboxylic acid, anhydride, ester or salt. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. An inhibitor for stabilizing an aqueous solution of a mono-ethylenically unsaturated carboxylic acid , ester or neutralized or partially neutralized salt against polymerization in the presence of oxygen , the inhibitor comprising an N-oxyl compound and a manganese ion at a weight ratio of 50:1 to less than 100:1.13. The inhibitor of in which the mono-ethylenically unsaturated carboxylic acid claim 12 , ester or neutralized or partially neutralized salt is a (meth)acrylic acid or ester.14. The inhibitor of in which the N-oxyl compound is 4-hydroxy TEMPO.15. The inhibitor of in which the manganese ion has a +2 valence.16. The inhibitor of in which the (meth)acrylic acid or ester is acrylic acid or methacrylic acid.17. (canceled)18. (canceled)19. (canceled)20. (canceled)21. (canceled)22. (canceled)23. (canceled)24. (canceled)25. (canceled)26. (canceled)27. (canceled)28. (canceled)29. (canceled) This application claims the benefit of U.S. Ser. No. 60/969,215, filed on Aug. 31, 2007; which application is fully incorporated herein by reference.This invention relates to acrylic acid and acrylate processes. In one aspect, the invention relates to inhibiting unwanted acrylic and acrylate ...

PROCESSES FOR PRODUCING HEXANEDIOL (HDO), HEXAMETHYLENEDIAMINE (HMD), ADIPONITRILE (ADN), ADIPAMIDE (ADM) AND DERIVATIVES THEREOF

Processes include producing hexanediol (HDO), hexamethylenediamine (HMD), adiponitrile (ADN), adipamide (ADM) and derivatives thereof from fermentation broths containing diammonium adipate (DAA), monoammonium adipate (MAA) and/or adipic acid (AA). 1. A process for producing nitrogen-containing compounds comprising:(a) providing a clarified DAA-containing fermentation broth;(b) distilling the broth to form an overhead that comprises water and ammonia, and a liquid bottoms that comprises MAA, at least some DAA, and at least about 20 wt % water;(c) 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 separate into a DAA-containing liquid portion and a MAA-containing solid portion that is substantially free of DAA;(d) separating the solid portion from the liquid portion;(e) recovering the solid portion;(f) contacting at least a part of the solid portion at least one hydrogenation catalyst to produce HDO;(g) aminating HDO to produce HMD; and(h) recovering the HMD.2. A process for making nitrogen-containing compounds comprising:(a) providing a DAA-containing fermentation broth;(b) distilling the broth to form a first overhead that comprises water and ammonia, and a first liquid bottoms that comprises MAA, at least some DAA, and at least about 20 wt % water;(c) 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 separate into a DAA-containing liquid portion and a MAA-containing solid portion that is substantially free of DAA;(d) separating the solid portion from the liquid portion;(e) recovering the solid portion;(f) dissolving the solid portion in water to produce an aqueous MAA solution;(g) distilling the aqueous MAA solution at a temperature and pressure sufficient to form a second overhead that comprises water and ammonia, and a second ...

CONTROL OF A PROCESS FOR THE PURIFICATION OF (METH)ACRYLIC ACID USING ON-LINE, NEAR IR ANALYSIS

An improved process for the manufacture of technical grade (meth)acrylic acid, e.g., acrylic acid, the process comprising producing a hydrated reaction product from the gas-phase oxidation of at least one (meth)acrylic acid precursor, e.g., propylene, followed by first dehydrating and then concentrating the reaction product, the improvement comprising controlling at least one of the water, acetic acid and (meth)acrylic acid content of the reaction product during the purification of the reaction product using on-line, near IR spectroscopy. 1. A method for producing a product stream of technical grade acrylic acid by controlling operation of a first distillation tower that is part of a coupled , two-tower distillation system for purification of (meth)acrylic acid , whereby distillation is carried out without using a solvent that forms an azeotrope with water and wherein said two distillation towers are connected such that a tails stream from a first tower is fed directly or indirectly into a top of a second tower while an overhead stream of the second tower is fed directly or indirectly into a base of the first tower , the method comprising the steps of:A. Creating an electronic signal, the signal based on at least one of the water, acetic acid and (meth)acrylic acid content of at least one of (i) a tails stream from the base of the first distillation tower, and (ii) an overhead stream from a second distillation tower that is coupled to and receives the tails stream from the first distillation tower;B. Sending the electronic signal created in (A) to a means for controlling the operating temperature of a condenser that is coupled to the first distillation tower, wherein the means for controlling the operating temperature of the condenser comprises a microprocessor that (i) receives the signal created in (A), (ii) compares the signal against a pre-determined setpoint, said setpoint indicating a content of water, acetic acid, or (meth)acrylic acid and (iii) if the signal ...

Control of a process for the purification of (meth) acrylic and using on-line, near ir analysis

AN IMPROVED PROCESS FOR THE MANUFACTURE OF TECHNICAL GRADE (METH)ACRYLIC ACID, E.G., ACRYLIC ACID, THE PROCESS COMPRISING PRODUCING A HYDRATED REACTION PRODUCT FROM THE GAS-PHASE OXIDATION OF AT LEAST ONE (METH)ACRYLIC ACID PRECURSOR, E.G., PROPYLENE, FOLLOWED BY FIRST DEHYDRATING AND THEN CONCENTRATING THE REACTION PRODUCT (1), THE IMPROVEMENT COMPRISING CONTROLLING AT LEAST ONE OF THE WATER, ACETIC ACID AND (METH)ACRYLIC ACID CONTENT OF THE REACTION PRODUCT (1) DURING THE PURIFICATION OF THE REACTION PRODUCT (1) USING ON-LINE, NEAR IR SPECTROSCOPY. (FIG. 1)

Process for producing acrylic acid

Processes for the production of pyrrolidones

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.

Processes for producing monoammonium adipate from fermentation broths containing diammonium adipate, monoammonium adipate and/or adipic acid, and conversion of monoammonium adipate to adipic acid

A process for making MAA from a clarified DAA-containing fermentation broth includes (a) distilling the broth to form an overhead that includes water and ammonia, and a liquid bottoms that includes MAA, at least some DAA, and at least about 20 wt% water; (b) cooling the bottoms to a temperature sufficient to cause the bottoms to separate into a DAA-containing liquid portion in contact with a MAA-containing solid portion that is substantially free of DAA; (c) separating the solid portion from the liquid portion; and (d) recovering the solid portion.

Processes for the production of hydrogenated products

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.

Processes for producing monoammonium succinate from fermentation broths containing diammonium succinate, monoammonium succinate and/or succinic acid, and conversion of monoammonium succinate to succinic acid

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.

Processes for producing diaminobutane (dab), succinic dinitrile (sdn) and succinamide (dam)

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.

Production of alpha-chloro-alpha-oximino-4-hydroxyacetophenone

ABSTRACT .alpha.-chloro-.alpha.-oximino-4-hydroxyacetophenone is prepared by reacting 4-hydroxyacetophenone with an alkyl nitrite and hydrogen chloride wherein the amount of hydrogen chloride is carefully controlled to limit the amount thereof to about 0.1 to 6 moles of hydrogen chloride per mole of 4-hydroxyacetophenone until at least one equivalent of the alkyl nitrite is reacted. Subsequent to the reaction of the one equivalent of alkyl nitrite, at least 1 mole of hydrogen chloride per mole of initially charged 4-hydroxyacetophenone is added to the reaction medium.

Novel process to prevent formation of chlorinated by-products in APAP production

A novel process for the prevention of the formation of chlorinated by-products during the Beckmann rearrangement of 4-hydroxyacetophenone oxime to APAP by the addition of an inorganic iodide such as potassium iodide to the Beckmann rearrangement reactor is disclosed.

Processes for producing adipic acid from fermentation broths containing diammonium adipate

Processes for making AA from either a clarified DAA-containing fermentation broth or a clarified MAA-containing fermentation broth that include 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 includes AA, and at least about 20 wt% water; cooling the bottoms to a temperature sufficient to cause the bottoms to separate into a liquid portion and a solid portion that is substantially pure AA; and separating the solid portion from the liquid portion. A method also reduces the broth distillation temperature and pressure by adding an ammonia separating and/or water azeotroping solvent to the broth.

Processes for producing hexanediol (hdo), hexamethylenediamine (hmd) from fermentation broths containing adipic acid

Processes for producing nitrogen containing compounds include producing hexanedioi (HDO), hexamethylenediamine (HMD), adiponitrile (ADN), adipamide (ADM) and derivatives thereof from adipic acid (AA) obtained from fermentation broths containing diammonium adipate (DAA) or monoammonium adipate (MAA).

Processes for producing hexamethylenediamine (hmd), adiponitrile (adn), adipamide (adm) and derivatives thereof

Processes include producing hexamethylenediamine (HMD), adiponitrile (ADN), adipamide (ADM) and derivatives thereof from fermentation broths containing diammonium adipate (DAA) monoammonium adipate (MAA) and/or adipic acid (AA).

Processes for producing diaminobutane (DAB), succinic dinitrile (SDN) and succinamide (DAM)

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.

Formation of hydroxyaromatic ketoacetal from an hydroxyaromatic methylketone and production of 5-(4'-hydroxyphenyl)hydantoin and d-p-hydroxyphenylglycine from 4 hydroxyacetophenone

Abstract of the Disclosure The present invention provides a method for producing an hydroxyaromatic ketoacetal from an hydroxyaromatic methylketone. The invention further provides a method for producing an hydroxyaromatic ketoaldehyde from an hydroxyaromatic ketoacetal. The hydroxyaromatic ketoaldehyde can be further reacted to form a hydantoin, which hydantoin can be hydrolyzed to produce a hydroxyphenylglycine.

Processes for the production of hydrogenated products

A process for making a hydrogenated product includes providing a clarified DAS- containing fermentation broth, distilling the broth to form an overhead that includes water and ammonia, and a liquid bottoms that includes MAS, at least some DAS, and at least about 20 wt% water, 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 separate into a DAS-containing liquid portion and a MAS-containing solid portion that is substantially free of DAS, separating the solid portion from the liquid portion, recovering the solid portion, hydrogenating the second 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 recovering the hydrogenated product.

Color control and stability improvement in acetaminophen

A method is provided for purifying crude N-acetyl-para-aminophenol (APAP) containing color bodies or their precursors, the method comprising: a) forming a solution of the crude APAP; and b) subsequently contacting the solution with substoichiometric quantities of an acetylating agent for a sufficient period of time to convert said color bodies or their precursors to substantially non-color bodies/stable, colorless substances; said quantities of acetylating agent provided is such that substantially none of the APAP is converted to other compounds.

Control of a process for the purification of (meth)acrylic acid using on-line, near ir analysis

An improved process for the manufacture of technical grade (meth)acrylic acid, e.g., acrylic acid, the process comprising producing a hydrated reaction product from the gas-phase oxidation of at least one (meth)acrylic acid precursor, e.g., propylene, followed by first dehydrating and then concentrating the reaction product, the improvement comprising controlling at least one of the water, acetic acid and (meth)acrylic acid content of the reaction product during the purification of the reaction product using on-line, near IR spectroscopy.

Method for the preparation of arylalkanolamineacylates

Acylamides or amine acylate salts of arylalkanolamines are prepared by reacting an arylisonitrosoalkanone with hydrogen and a carboxylic acid, carboxylic acid anhydride or carboxylic acid ester or mixture thereof in the presence of a transition metal catalyst; optionally the product is converted to the corresponding arylalkanolamine hydrochloride salt by reaction of the acylamide or amine acylate salt of the arylalkanolamine with hydrogen chloride in a C 1 -C 3 alkyl alcohol.

Acrylic acid from lactide

Technical grade acrylic acid derived from renewable resources utilizing a homogeneous nickel catalyst system by a process including reacting lactide with acetic acid to torn) 2- acetoxypropionic acid in the presence of a homogeneous nickel catalyst, pyrolyzing, with or without a catalyst, the 2-acetoxypropionic acid to acrylic acid and acetic acid, condensing and collecting the pyrolysis products in the presence of polymerization inhibitor(s) and purifying the acrylic acid by distillation in the presence of polymerization inhibitor(s). Acrylic acid and methyl acrylate are produced from methyl 2-acetoxypropionate which comes from fermentation derived lactic acid. The disclosed process will produce a "green" (i.e. renewable resources derived) acrylic acid and methyl acrylate ester.

control of a process for the purification of (meth) acrylic acid using iv analysis next online

Processes for producing monoammonium adipate from fermentation broths containing diammonium adipate, monoammonium adipate and/or adipic acid, and conversion of monoammonium adipate to adipic acid

A process for making MAA from a clarified DAA-containing fermentation broth includes (a) distilling the broth to form an overhead that includes water and ammonia, and a liquid bottoms that includes MAA, at least some DAA, and at least about 20 wt% water; (b) cooling the bottoms to a temperature sufficient to cause the bottoms to separate into a DAA-containing liquid portion in contact with a MAA-containing solid portion that is substantially free of DAA; (c) separating the solid portion from the liquid portion; and (d) recovering the solid portion.

Processes for removing color during production of runway deicer

Methods for preventing or reducing the formation of scale in a wet-process phosphoric acid production process by intermixing a water-soluble functional organic reagent with a phosphoric acid at one or more step of the phosphoric acid production process in an amount sufficient to prevent or reduce at least one species of scale are provided.

Processes for the production of hydrogenated products

A process for making a hydrogenated product includes providing a clarified DAS-containing fermentation broth, distilling the broth to form an overhead that includes water and ammonia, and a liquid bottoms that includes MAS, at least some DAS, and at least about 20 wt% water, 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 separate into a DAS-containing liquid portion and a MAS-containing solid portion that is substantially free of DAS, separating the solid portion from the liquid portion, recovering the solid portion, hydrogenating the second 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 recovering the hydrogenated product.

Processes for producing adipic acid from fermentation broths containing diammonium adipate

Processes for making AA from either a clarified DAA-containing fermentation broth or a clarified MAA-containing fermentation broth that include 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 includes AA, and at least about 20 wt% water; cooling the bottoms to a temperature sufficient to cause the bottoms to separate into a liquid portion and a solid portion that is substantially pure AA; and separating the solid portion from the liquid portion. A method also reduces the broth distillation temperature and pressure by adding an ammonia separating and/or water azeotroping solvent to the broth.

Process for recovering sulfonic acid catalyst and noble products from acrylate heavy ends

Sulfonic acid catalyst, e.g., methanesulfonic acid (MSA), and noble products, e.g., acrylic acid, butanol and butyl acrylatε, are recovered from acrylate reactor blowdown. The blowndown comprises, among oilier things, the Michael ad ducts of the sulfonic acid and acrylate esters. The blowdown is mixed with water, subjected to conditions sufficient to crack or hydrolyze the Michael addνcts into their constituent parts. These cracking conditions are also sufficient to allow the recovery of the sulfonic acid and constituent parts, as well as other light components of the heavy ends, e.g., unreacted acrylic acid and butanol,

Processes for the production of caprolactam and derivatives thereof from fermentation broths containing diamonium adipate, monoammonium adipate and / or adipic acid

Un proceso para la producción de caprolactama a partir de un caldo de fermentación que contiene adipato de diamonio aclarado, que comprende: (a) destilar el caldo para formar un destilado de cabeza que comprende agua y amoníaco, y una parte final de la destilación líquida que comprende adipato de monoamonio, al menos algo de adipato de diamonio y al menos aproximadamente un 20 % en peso de agua; (b) enfriar y/o evaporar la parte final de la destilación para alcanzar una temperatura y una composición suficientes para provocar que la parte final de la destilación se separe en una porción líquida que contiene adipato de diamonio y una porción sólida que contiene adipato de monoamonio que está sustancialmente libre de adipato de diamonio; (c) separar la porción sólida de la porción líquida; (d) recuperar la porción sólida; y (e) poner en contacto al menos una porción de la porción sólida con hidrógeno, en presencia de un catalizador de hidrogenación a una temperatura de aproximadamente 25 ºC a aproximadamente 500 ºC y una presión de aproximadamente 0,5 a aproximadamente 40 MPa para producir la caprolactama. A process for the production of caprolactam from a fermentation broth containing clarified diamonds adipate, comprising: (a) distilling the broth to form a head distillate comprising water and ammonia, and a final part of the liquid distillation which comprises monoammonium adipate, at least some diamonium adipate and at least about 20% by weight of water; (b) cooling and / or evaporating the final part of the distillation to reach a temperature and composition sufficient to cause the final part of the distillation to separate into a liquid portion containing diamonium adipate and a solid portion containing adipate of monoammonium that is substantially free of diamonium adipate; (c) separating the solid portion from the liquid portion; (d) recover the solid portion; and (e) contacting at least a portion of the solid portion with hydrogen, in the presence of a ...

Processes for removing color during production of runway deicer

Methods for preventing or reducing the formation of scale in a wet-process phosphoric acid production process by intermixing a water-soluble functional organic reagent with a phosphoric acid at one or more step of the phosphoric acid production process in an amount sufficient to prevent or reduce at least one species of scale are provided.

Processes for the production of pyrrolidones

Processes for making pyrrolidones include providing a clarified diammonium succinate (DAS)-containing and/or monoammonium succinate (MAS)-containing fermentation broth; distilling the broth under super atmospheric pressure at a temperature of greater than 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 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; separating the solid portion from the liquid portion; and converting the solid SA portion to pyrrolidones.

Processes for the production of tetrahydrofuran, gamma - butyrolactone and/or butanediol from salts of succinic acid

A process for making a hydrogenated product includes providing a clarified DAS-containing fermentation broth, distilling the broth to form an overhead that includes water and ammonia, and a liquid bottoms that includes MAS, at least some DAS, and at least about 20 wt% water, 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 separate into a DAS-containing liquid portion and a MAS-containing solid portion that is substantially free of DAS, separating the solid portion from the liquid portion, recovering the solid portion, hydrogenating the second 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 recovering the hydrogenated product.

Processes for producing hexamethylenediamine (hmd), adiponitrile (adn), adipamide (adm) and derivatives thereof

Processes include producing hexamethylenediamine (HMD), adiponitrile (ADN), adipamide (ADM) and derivatives thereof from fermentation broths containing diammonium adipate (DAA) monoammonium adipate (MAA) and/or adipic acid (AA).

Control of a process for the purification of (meth) acrylic acid using on-line, near ir analysis.

Un proceso mejorado para la fabricación de ácido (met)acrílico de grado técnico, por ejemplo, ácido acrílico, comprendiendo el proceso producir un producto de reacción hidratado a partir de la oxidación de tase de gas de al menos un precursor de ácido (met)acrílico, por ejemplo, propileno, seguido, primero, por deshidratación- y luego concentración del producto de reacción, comprendiendo la mejora controlar el contenido de al menos uno de agua, ácido acético y ácido (met)acrílico del producto de reacción durante la purificación del producto de reacción usando espectroscopía de IR cercano en línea.

processes for the production of diaminobutane (dab), succinic dinitrile (sdn) and succinamide (dam)

processo para a produção de diaminobutano (dab), dinitrila succínico (sdn) e succinamida (dam). a presente invenção refere-se a um processo para a produção de compostos contendo nitrogênio que inclui a conversão de ácido succínico (sa) ou de succinato de monoamônio (mas) derivado de um caldo de fermentação contendo succinato de diamônio (das) ou mas para produzir tais compostos incluindo diaminobutano (dab), dinitrila succínico (sdn), amino nitrila succínico (san), sccinamida (dam), e polímeros relacionados.

Processes for removing color during production of runway deicer

Methods for preventing or reducing the formation of scale in a wet-process phosphoric acid production process by intermixing a water-soluble functional organic reagent with a phosphoric acid at one or more step of the phosphoric acid production process in an amount sufficient to prevent or reduce at least one species of scale are provided.

Method of inhibiting polymerization and fouling in acrylic acid and acrylate processes

The method of inhibiting the polymerization of a mono-ethylenically unsaturated carboxylic acid, anhydride, ester or neutralized or partially neutralized sail, e.g., an acrylic acid or ester, in an aqueous solution and in the presence of oxygen, the method comprising the step of mixing with the aqueous solution an inhibitor comprising (i) at least 50 ppm of an N-oxyl compound, e.g., 4-hydroxy-TEMPO, and (ii) a manganese ion, the N-oxyl compound and manganese ion present in a N-oxyl compound to manganese ion weight ratio of 50:1 to less than 100:1 based on the mono-ethylenically unsaturated carboxylic acid, anhydride, ester or salt,

Zpusob vyroby n acyl 4 hydroxyfenylaminu

Processes for purification of succinic acid via distillation

Processes for removing color bodies from crude succinic acid comprising distillation of crude succinic acid and collecting the distillate in a water-containing receiver. The color bodies substantially remain in the distillation bottoms and the purified succinic acid in the water-containing receiver is substantially free of color bodies.

Production of 5-(4'-hydroxyphenyl)hydantoin and d-p-hydroxyphenylglycine from 4-hydroxyacetophenone

The present invention provides a method for producing an hydroxyaromatic ketoacetal from an hydroxyaromatic methylketone. The invention further provides a method for producing an hydroxyaromatic ketoaldehyde from an hydroxyaromatic ketoacetal. The hydroxyaromatic ketoaldehyde can be further reacted to form a hydantoin, which hydantoin can be hydrolyzed to produce a hydroxyphenylglycine.

Processes for producing succinic acid from fermentation broths containing diammonium succinate

Processes for making SA from either a clarified DAS-containing fermentation broth or a clarified MAS-containing fermentation broth that include 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 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 and a solid portion that is substantially pure SA; and separating the solid portion from the liquid portion. A method also reduces the broth distillation temperature and pressure by adding an ammonia separating and/or water azeotroping solvent to the broth.