公开(公告)号：US10525404B2

公开(公告)日：2020-01-07

申请号：US16095970

申请日：2017-04-05

Applicant: BASF SE ,  ExxonMobil Research and Engineering Company

Inventor： Thomas Ingram ,  Gerald Vorberg ,  Martin Ernst ,  Carla Pereira ,  Michael Siskin

IPC: B01D53/14 ,  B01D53/52 ,  B01D53/78 ,  B01D53/96

Abstract: A process for removing acid gases from a fluid stream, wherein the fluid stream is contacted with an absorbent comprising a compound of the general formula (I), wherein R1 and R2 are independently C1-C4-alkyl; R3 is selected from hydrogen and C1-C4-alkyl, R4, R5 and R6 are independently selected from hydrogen and C1-C4-alkyl; x and y are integers from 2 to 4 and z is an integer from 1 to 3, to obtain a treated fluid stream and a laden absorbent. The process allows for a high cyclic capacity while the compounds of the absorbent have a reduced tendency to foaming and low volatility.

公开(公告)号：US10464013B2

公开(公告)日：2019-11-05

申请号：US15506451

申请日：2015-08-20

Applicant: BASF SE

Inventor： Gerald Vorberg ,  Ralf Notz ,  Thomas Ingram ,  Georg Sieder ,  Torsten Katz

IPC: B01D53/14 ,  B01D53/78 ,  B01D53/96 ,  C07C217/08 ,  C07C217/28 ,  C07C217/42 ,  C10L3/10

Abstract: An absorbent for selective removal of hydrogen sulfide from a fluid stream comprises an aqueous solution of a) a tertiary amine, b) a sterically hindered secondary amine of the general formula (I) in which R1 and R2 are each independently selected from C1-4-alkyl and C1-4-hydroxyalkyl; R3, R4, R5 and R6 are each independently selected from hydrogen, C1-4-alkyl and C1-4-hydroxyalkyl, with the proviso that at least one R4 and/or R5 radical on the carbon atom bonded directly to the nitrogen atom is C1-4-alkyl or C1-4-hydroxyalkyl when R3 is hydrogen; x and y are integers from 2 to 4 and z is an integer from 1 to 4; where the molar ratio of b) to a) is in the range from 0.05 to 1.0, and c) an acid in an amount, calculated as neutralization equivalent relative to the protonatable nitrogen atoms in a) and b), of 0.05 to 15.0%. One preferred amine of the formula I is 2-(2-tert-butylaminoethoxy)ethanol. The absorbent allows a defined H2S selectivity to be set at pressures of the kind typical in natural gas processing.

公开(公告)号：US11048842B2

公开(公告)日：2021-06-29

申请号：US16135465

申请日：2018-09-19

Applicant: BASF SE

Inventor： Agnes Dittel ,  Ralf Notz ,  Sergey Vorobyev ,  Rainer Herget ,  Torsten Katz ,  Gerald Vorberg ,  Kim Hoeffken

IPC: G06F17/11 ,  B01D53/14 ,  B01D53/04 ,  H04L12/26 ,  G06F30/331 ,  G06F111/10

Abstract: The present invention is related to a method for determination of unit operations of a chemical plant for acid gas removal, the method carried out by a computer or a distributed computer system and the method comprising the steps of: providing a first set of parameters for the unit operations; providing a second set of parameters for the unit operations based on the provided first set of parameters and based on data retrieved from a database; determining a digital model of the chemical plant based on the first set of parameters and the second set of parameters, wherein the digital model comprises a system of equations defining the unit operations of the chemical plant; selecting starting points for an equation-based solution method of the system of equations, wherein the starting points are at least partially selected from the: (i) the first set of parameters; (ii) the second set of parameters; and (iii) the data retrieved from the database; determining resultant settings for the unit operations of the chemical plant using the equation-based solution method for the system of equations initialized by the selected starting points.

公开(公告)号：US11045759B2

公开(公告)日：2021-06-29

申请号：US16093731

申请日：2017-04-06

Applicant: BASF SE

Inventor： Thomas Ingram ,  Gerald Vorberg ,  Georg Sieder

IPC: B01D53/14 ,  C10L3/10

Abstract: A premixture for producing an absorbent for removing acid gases from a fluid stream containing a) at least a tertiary amine and/or a sterically hindered secondary amine; b) a dicarboxylic acid in an amount, calculated as neutralization equivalent based on the protonatable nitrogen atoms in a), of at least 30%, wherein the dicarboxylic acid has a solubility in water at a temperature of 20° C. of not more than 15 g of dicarboxylic acid per 100 g of water; and c) 20 to 80 wt % of water. Also described is a process for producing an absorbent from the premixture. The premixture is a transportable and readily handleable solution of a dicarboxylic acid having poor solubility in water for producing an absorbent for removing acid gases from a fluid stream.

公开(公告)号：US10207217B2

公开(公告)日：2019-02-19

申请号：US15506635

申请日：2015-08-20

Applicant: BASF SE

Inventor： Thomas Ingram ,  Ralf Notz ,  Gerald Vorberg ,  Georg Sieder

IPC: B01D53/14 ,  B01D53/52 ,  B01D53/78 ,  B01D53/96 ,  C07C217/08 ,  C07C217/28 ,  C07C217/42

Abstract: A process for removing hydrogen sulfide and carbon dioxide from a fluid stream comprises a) an absorption step in which the fluid stream is contacted with an absorbent comprising an aqueous solution (i) of an amine of the general formula (I) in which R1, R2 and R3 are each independently selected from C1-4-alkyl and C1-4-hydroxyalkyl; each R4 is independently selected from hydrogen, C1-4-alkyl and C1-4-hydroxyalkyl; each R5 is independently selected from hydrogen, C1-4-alkyl and C1-4-hydroxyalkyl; X is OH or NH(CR1R2R3); m is 2, 3, 4 or 5; n is 2, 3, 4 or 5; and o is 0 or 1; and optionally (ii) at least one tertiary amine, where the molar ratio of (i) to (ii) is greater than 0.05; wherein at least 90% of the hydrogen sulfide is removed from the fluid stream and selectivity for hydrogen sulfide over carbon dioxide is not greater than 8, wherein a CO2- and H2S-laden absorbent is obtained; b) a regeneration step in which at least a substream of the CO2- and H2S-laden absorbent is regenerated and a regenerated absorbent is obtained; and c) a recycling step in which at least a substream of the regenerated absorbent is recycled into the absorption step a). The process allows a high level of hydrogen sulfide removal with a simultaneously high coabsorption of carbon dioxide.