methoxytriethyleneglycol-t-butylamine | 926622-96-0

• 分子结构分类: 有机化合物 - 有机氮化合物
• 英文名称: methoxytriethyleneglycol-t-butylamine
• 英文别名: N-[2-[2-(2-Methoxyethoxy)ethoxy]ethyl]-2-methyl-2-propanamine；N-[2-[2-(2-methoxyethoxy)ethoxy]ethyl]-2-methylpropan-2-amine
• CAS: 926622-96-0
• 化学式: C₁₁H₂₅NO₃
• 分子量: 219.324
• InChiKey: WMWYWYGTXRQQRJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.3
• 重原子数：
  15
• 可旋转键数：
  10
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  39.7
• 氢给体数：
  1
• 氢受体数：
  4

文献信息

• SEPARATION OF HYDROGEN SULFIDE FROM NATURAL GAS
  申请人：Kortunov Pavel

  公开号：US20150027055A1

  公开（公告）日：2015-01-29

  A process for increasing the selectivity of an alkanolamine absorption process for selectively removing hydrogen sulfide (H 2 S) from a gas mixture which also contains carbon dioxide (CO 2 ) and possibly other acidic gases such as COS, HCN, CS 2 and sulfur derivatives of C 1 to C 4 hydrocarbons, comprises contacting the gas mixture with a liquid absorbent which is a severely sterically hindered capped alkanolamine or more basic sterically hindered secondary and tertiary amine. The improvement in selectivity is achieved at the high(er) pressures, typically least about 10 bara at conditions nearing the H 2 S/CO 2 equilibrium at which CO 2 begins to displace absorbed hydrosulfide species from the absorbent solution.

  一种用于增加烷基醇胺吸收过程的选择性的方法，以从气体混合物中选择性地去除氢硫化物（H2S），该混合物还包含二氧化碳（CO2）和可能含有其他酸性气体，如COS，HCN，CS2和C1至C4碳氢化合物的硫衍生物，包括将气体混合物与液体吸收剂接触，该吸收剂是严重立体阻碍的封顶烷基醇胺或更基本的立体阻碍的二级和三级胺。在高（更高）压力下实现选择性的改进，通常至少在接近H2S / CO2平衡的条件下，CO2开始从吸收剂溶液中置换吸收的硫化氢物种。
• PROCESS FOR REMOVAL OF ACID GASES FROM A FLUID STREAM WITH A LIQUID ABSORBENT COMPRISING A PIPERAZINE RING
  申请人：BASF SE

  公开号：US20220152551A1

  公开（公告）日：2022-05-19

  A process for removal of acid gases from fluid stream, wherein the fluid stream is brought into contact with an absorbent to obtain a treated fluid stream and a laden absorbent, the absorbent comprising a diluent and a compound of the general formula (I) wherein R 1 is selected from C 1 -C 8 -alkyl and C 2 -C 8 -hydroxyalkyl; R 2 is selected from hydrogen and C 1 -C 8 -alkyl; R 3 is selected from hydrogen and C 1 -C 8 -alkyl; R 4 is selected from hydrogen and C 1 -C 8 -alkyl; R 5 is C 1 -C 8 -alkyl; with the proviso that at least one of the following conditions (i) and (ii) is met: (i) R 5 is C 3 -C 8 -alkyl bound to the nitrogen atom via a secondary or tertiary carbon atom; (ii) when R 4 is hydrogen, R 3 is C 1 -C 8 -alkyl; or when R 4 is C 1 -C 8 -alkyl, at least one of R 2 and R 3 is C 1 -C 8 -alkyl; and n is an integer from 0 to 6. Further provided is an absorbent for the absorption of acid gases from a fluid stream, comprising a diluent and a compound of the general formula (I) as defined above, as well as the use of a compound of the general formula (I) as defined above for removal of acid gases from a fluid stream. The absorbents are useful for the selective removal of hydrogen sulfide from fluid streams and have high acid gas loading capacity, high stability, and low volatility.

  一种从流体流中去除酸性气体的过程，其中将流体流与吸收剂接触以获得处理后的流体流和负载吸收剂，所述吸收剂包括稀释剂和通式（I）的化合物，其中R1选择自C1-C8烷基和C2-C8羟基烷基；R2选择自氢和C1-C8烷基；R3选择自氢和C1-C8烷基；R4选择自氢和C1-C8烷基；R5是C1-C8烷基；但至少满足以下条件之一（i）和（ii）之一：（i）R5是通过次级或三级碳原子与氮原子结合的C3-C8烷基；（ii）当R4为氢时，R3为C1-C8烷基；或当R4为C1-C8烷基时，至少有一个R2和R3是C1-C8烷基；n是0到6的整数。还提供了一种吸收剂，用于从流体流中吸收酸性气体，包括稀释剂和如上所述的通式（I）的化合物，以及使用如上所述的通式（I）的化合物从流体流中去除酸性气体。这些吸收剂对于选择性地从流体流中去除硫化氢非常有用，并具有高酸性气体负载能力，高稳定性和低挥发性。
• Acid gas enrichment method and system
  申请人：BASF SE

  公开号：US10875769B2

  公开（公告）日：2020-12-29

  A process for treating an H2S- and CO2-comprising fluid stream, in which a) the fluid stream is treated in a first absorber at a pressure of 10 to 150 bar with a first substream of a regenerated H2S-selective absorbent to obtain a treated fluid stream and an H2S-laden absorbent; b) the H2S-laden absorbent is heated by indirect heat exchange with regenerated H2S-selective absorbent; c) the heated H2S-laden absorbent is decompressed to a pressure of 1.2 to 10 bar in a low-pressure decompression vessel to obtain a first CO2-rich offgas and a partly regenerated absorbent; d) the partly regenerated absorbent is regenerated in a desorption column to obtain an H2S-rich offgas and regenerated absorbent; e) the H2S-rich offgas is fed to a Claus unit and the offgas from the Claus unit is fed to a hydrogenation unit to obtain hydrogenated Claus tail gas; f) the hydrogenated Claus tail gas and the first CO2-rich offgas are treated in a second absorber at a pressure of 1 to 4 bar with a second substream of the regenerated H2S-selective absorbent to obtain a second CO2-rich offgas and a second H2S-laden absorbent; and g) the second H2S-laden absorbent is guided into the first absorber. Also described is a plant suitable for performance of the process. The process is notable for a low energy requirement.

  一种处理含有 H2S 和 CO2 的流体流的工艺，其中 a) 在压力为 10 至 150 巴的第一吸收器中，用再生的 H2S 选择性吸收剂的第一子流处理流体流，得到处理过的流体流和含有 H2S 的吸收剂；b) 通过与再生的 H2S 选择性吸收剂进行间接热交换，加热含有 H2S 的吸收剂；c) 在低压减压容器中，将加热的含有 H2S 的吸收剂减压至压力为 1.2至10巴的低压减压容器中减压，得到富含CO2的第一种尾气和部分再生的吸收剂；d) 部分再生的吸收剂在解吸塔中再生，得到富含H2S的尾气和再生的吸收剂；e) 将富含H2S的尾气送入克劳斯装置，将克劳斯装置的尾气送入加氢装置，得到加氢克劳斯尾气；f) 将氢化克劳斯尾气和第一种富含 CO2 的尾气在压力为 1 至 4 巴的第二吸收器中用再生 H2S 选择性吸收剂的第二子流进行处理，以获得第二种富含 CO2 的尾气和第二种富含 H2S 的吸收剂；以及 g) 将第二种富含 H2S 的吸收剂导入第一吸收器。此外，还介绍了适用于该工艺的设备。该工艺的显著特点是能耗低。
• Premix for producing an absorption agent for removing acid gases from a fluid flow
  申请人：BASF SE

  公开号：US11045759B2

  公开（公告）日：2021-06-29

  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.

  一种用于生产从流体中去除酸性气体的吸收剂的预混合物，包含 a) 至少一种叔胺和/或一种立体受阻的仲胺；b) 一种二羧酸，以 a) 中可质子化的氮原子为基础，按中和当量计算，其含量至少为 30%，其中二羧酸在 20°C 温度的水中的溶解度不超过 15 克/100 克水；以及 c) 20 至 80 重量百分比的水。c) 水的重量百分比为 20 至 80%。还描述了一种利用预混合物生产吸收剂的工艺。该预混合物是一种可运输且易于处理的二羧酸溶液，该二羧酸在水中的溶解度较低，可用于生产一种吸收剂，以去除流体中的酸性气体。
• Process for increased selectivity and capacity for hydrogen sulfide capture from acid gases
  申请人：ExxonMobil Research and Engineering Company

  公开号：US11185813B2

  公开（公告）日：2021-11-30

  A process for selectively separating H2S from a gas mixture which also comprises CO2 is disclosed. A stream of the gas mixture is contacted with an absorbent solution comprising one or more amines, alkanolamines, hindered alkanolamines, capped alkanolamines, or mixtures thereof. The H2S/CO2 selectivity of the absorbent solution is preferably greater than about 4.0 for an acid gas loading [mol(CO2+H2S)/mol(amine)] between about 0.2 and about 0.6, and is achieved by reducing pH of the absorbent solution.

  本发明公开了一种从还包括 CO2 的气体混合物中选择性分离 H2S 的工艺。混合物气流与由一种或多种胺、烷醇胺、受阻烷醇胺、封端烷醇胺或其混合物组成的吸收剂溶液接触。当酸性气体负载[mol(CO2+H2S)/mol(胺)]在约 0.2 至约 0.6 之间时，吸收液的 H2S/CO2 选择性最好大于约 4.0，并通过降低吸收液的 pH 值来实现。