A method is disclosed for the production of taurine in high yield by a cyclic process of reacting monoethanolamine, sulfuric acid, and ammonium sulfite in the presence of additives to inhibit the hydrolysis of 2-aminoethyl hydrogen sulfate intermediate. The cyclic process is economical and little waste is generated.

An integrated, co-product capable process is provided for producing taurine in particular with optionally one or both of monoethanolamine and diethanolamine from one or more sugars, comprising pyrolyzing one or more sugars to produce a crude pyrolysis product mixture including glycolaldehyde and formaldehyde; optionally removing formaldehyde from the crude pyrolysis product mixture, then combining the crude pyrolysis product mixture with an aminating agent in the presence of hydrogen and further in the presence of a catalyst to produce at least monoethanolamine from the crude pyrolysis product mixture; optionally recovering diethanolamine from the crude reductive amination product, sulfating at least a portion to all of the monoethanolamine product to produce 2-aminoethyl hydrogen sulfate ester; and sulfonating the 2-aminoethyl hydrogen sulfate ester to produce taurine.

An integrated, co-product capable process is provided for producing taurine in particular with optionally one or both of monoethanolamine and diethanolamine from one or more sugars, comprising pyrolyzing one or more sugars to produce a crude pyrolysis product mixture including glycolaldehyde and formaldehyde; optionally removing formaldehyde from the crude pyrolysis product mixture, then combining the crude pyrolysis product mixture with an aminating agent in the presence of hydrogen and further in the presence of a catalyst to produce at least monoethanolamine from the crude pyrolysis product mixture; optionally recovering diethanolamine from the crude reductive amination product, sulfating at least a portion to all of the monoethanolamine product to produce 2-aminoethyl hydrogen sulfate ester; and sulfonating the 2-aminoethyl hydrogen sulfate ester to produce taurine.

A production system for removing impurities from a taurine mother liquor and recovering the taurine mother liquor. The system can be used in an ethylene oxide production process for taurine and the treatment of the last mother liquor of taurine. The system includes, consecutively, an anion resin adsorption device for adsorbing the anions of taurine and sodium isethionate, and an ammonia mixing and desalination device. A feed port of the anion resin adsorption device is operatively connected to receive the last mother liquor of taurine generated in the ethylene oxide taurine production process, and the anion resin adsorption device includes an anion exchange resin column. The ammonia mixing and desalination device includes an ammonia mixing reaction tank, a sealed filtering device, and a circulation path for returning filtrate to the ammonia mixing reaction tank.

A production system for removing impurities from a taurine mother liquor and recovering the taurine mother liquor. The system can be used in an ethylene oxide production process for taurine and the treatment of the last mother liquor of taurine. The system includes, consecutively, an anion resin adsorption device for adsorbing the anions of taurine and sodium isethionate, and an ammonia mixing and desalination device. A feed port of the anion resin adsorption device is operatively connected to receive the last mother liquor of taurine generated in the ethylene oxide taurine production process, and the anion resin adsorption device includes an anion exchange resin column. The ammonia mixing and desalination device includes an ammonia mixing reaction tank, a sealed filtering device, and a circulation path for returning filtrate to the ammonia mixing reaction tank.

Disclosed are HPTS series derivatives and a synthesis method thereof, belonging to the field of organic synthesis. The HPTS series derivatives are prepared by introducing alkylamine or alcohol into sulfonic acid groups of HPTS. The synthesis method comprises the following steps: subjecting HPTS and phosphorus oxychloride to heating and reflux reaction for 12 hours under catalysis of DMF to obtain a reaction product; introducing the reaction product into ice water, stirring, precipitating solid, and performing suction filtration to obtain HPTS-SO.sub.2Cl; dissolving the HPTS-SO.sub.2Cl in tetrahydrofuran to prepare solution A, and dissolving alkylamine or alcohol in tetrahydrofuran to prepare solution B; mixing the solution A with the solution B and then reacting for 24 hours at normal temperature, obtaining a product by rotary evaporation, and obtaining a pure compound after separation through columns. The derivatives have strong fat solubility, overcome the defect of a very strong water solubility.

Disclosed are HPTS series derivatives and a synthesis method thereof, belonging to the field of organic synthesis. The HPTS series derivatives are prepared by introducing alkylamine or alcohol into sulfonic acid groups of HPTS. The synthesis method comprises the following steps: subjecting HPTS and phosphorus oxychloride to heating and reflux reaction for 12 hours under catalysis of DMF to obtain a reaction product; introducing the reaction product into ice water, stirring, precipitating solid, and performing suction filtration to obtain HPTS-SO.sub.2Cl; dissolving the HPTS-SO.sub.2Cl in tetrahydrofuran to prepare solution A, and dissolving alkylamine or alcohol in tetrahydrofuran to prepare solution B; mixing the solution A with the solution B and then reacting for 24 hours at normal temperature, obtaining a product by rotary evaporation, and obtaining a pure compound after separation through columns. The derivatives have strong fat solubility, overcome the defect of a very strong water solubility.

Disclosed are HPTS series derivatives and a synthesis method thereof, belonging to the field of organic synthesis. The HPTS series derivatives are prepared by introducing alkylamine or alcohol into sulfonic acid groups of HPTS. The synthesis method comprises the following steps: subjecting HPTS and phosphorus oxychloride to heating and reflux reaction for 12 hours under catalysis of DMF to obtain a reaction product; introducing the reaction product into ice water, stirring, precipitating solid, and performing suction filtration to obtain HPTS-SO.sub.2Cl; dissolving the HPTS-SO.sub.2Cl in tetrahydrofuran to prepare solution A, and dissolving alkylamine or alcohol in tetrahydrofuran to prepare solution B; mixing the solution A with the solution B and then reacting for 24 hours at normal temperature, obtaining a product by rotary evaporation, and obtaining a pure compound after separation through columns. The derivatives have strong fat solubility, overcome the defect of a very strong water solubility.

The present disclosure provides a system for efficiently preparing taurine, including: a solution storage unit configured to store a solution containing alkali metal taurinate, the solution being prepared by an ethylene oxide process; an ion exchange unit including at least one ion exchange resin column each configured to be activated by a first activation manner or a second activation manner independently, the first activation manner using sulfurous acid for activation to obtain alkali metal bisulfate and taurine, and the second activation manner using sulfuric acid for activation to obtain alkali metal sulfate and taurine; and a dispensing unit connected to the solution storage unit and the ion exchange unit respectively, and configured to adjust an amount of a solution conveyed from the solution storage unit to each of the at least one ion exchange resin column in the ion exchange unit.

The present disclosure provides a system for efficiently preparing taurine, including: a solution storage unit configured to store a solution containing alkali metal taurinate, the solution being prepared by an ethylene oxide process; an ion exchange unit including at least one ion exchange resin column each configured to be activated by a first activation manner or a second activation manner independently, the first activation manner using sulfurous acid for activation to obtain alkali metal bisulfate and taurine, and the second activation manner using sulfuric acid for activation to obtain alkali metal sulfate and taurine; and a dispensing unit connected to the solution storage unit and the ion exchange unit respectively, and configured to adjust an amount of a solution conveyed from the solution storage unit to each of the at least one ion exchange resin column in the ion exchange unit.