摘要:
The present invention relates to a process for selectively preparing severely sterically hindered secondary aminoether alcohols by reacting a primary amino compound with a polyalkenyl ether glycol in the presence of a hydrogenation catalyst at elevated temperatures and pressures. The severely sterically hindered secondary aminoether alcohols are useful in acid gas scrubbing processes, particularly in the selective removal of H.sub.2 S from gaseous streams containing CO.sub.2 and H.sub.2 S.
摘要:
The present invention relates to a new alkaline absorbent solution that reduces the H.sub.2 S content in a treated gas to below 10 vppm. The absorbent solution contains two severely-hindered amines, such as bis(tertiarybutylaminoethoxy)-ethane (BTEE) and ethoxyethoxyethanol-tertiarybutylamine (EEETB), a severely hindered amine salt, and/or a severely hindered aminoacid. This invention also describes a process for the removal of H.sub.2 S from fluid mixtures using this absorbent solution to produce a very low level of H.sub.2 S in the treated fluid. The process is also suitable for the selective removal of H.sub.2 S from fluid mixtures comprising H.sub.2 S and CO.sub.2.
摘要翻译:本发明涉及一种将处理气体中的H 2 S含量降低至低于10vppm的新的碱性吸收剂溶液。 吸收剂溶液含有两种严重受阻胺,如双(叔丁基氨基乙氧基) - 乙烷(BTEE)和乙氧基乙氧基乙醇 - 叔丁胺(EEETB),严重受阻胺盐和/或严重受阻的氨基酸。 本发明还描述了一种使用该吸收剂溶液从流体混合物中除去H 2 S的方法,以在处理过的流体中产生非常低水平的H 2 S. 该方法也适用于从包含H 2 S和CO 2的流体混合物中选择性除去H 2 S.
摘要:
The present invention relates to a mixture of severely-hindered amines, such as bis-(tertiarybutylaminoethoxy)-ethane (BTEE) and ethoxyethoxyethanoltertiarybutylamine (EEETB), and a one-step synthesis method for its preparation. Besides, this invention describes the use of the mixture for the removal of H.sub.2 S, especially the selective removal of H.sub.2 S in the presence of CO.sub.2.
摘要翻译:本发明涉及双(叔丁基氨基乙氧基) - 乙烷(BTEE)和乙氧基乙氧基乙醇叔丁胺(EEETB)等严重受阻胺的混合物及其制备的一步合成方法。 此外,本发明描述了混合物用于除去H 2 S的用途,特别是在CO 2存在下选择性除去H 2 S.
摘要:
A novel class of severely sterically hindered tertiary amino compounds having a pK.sub.a value at 20.degree. C. greater than 8.6, preferably ranging from 9.3 to about 10.6, and a cumulative -E.sub.s value of at least 1.9 are found to be useful in selective removal of H.sub.2 S from a normally gaseous mixture containing H.sub.2 S and CO.sub.2.
摘要翻译:发现一类新的具有pKa值在20℃,大于8.6,优选9.3至约10.6,累积-E值至少为1.9的叔氨基化合物可用于选择性除去 来自含有H 2 S和CO 2的常态气体混合物的H 2 S.
摘要:
The selective removal of H.sub.2 S gas from a normally gaseous mixture containing H.sub.2 S and CO.sub.2 is accomplished by contacting the gaseous mixture with an absorbent solution comprising a severely sterically hindered secondary amino compound having a cumulative .sup.- E.sub.s value (Taft's steric hindrance constant) greater than about 1.75 whereby H.sub.2 S is selectively absorbed from the mixture.
摘要:
The selective removal of H.sub.2 S gas from a normally gaseous mixture containing H.sub.2 S and CO.sub.2 is accomplished by contacting the gaseous mixture with an absorbent solution comprising a tertiary amino azabicyclic alcohol whereby H.sub.2 S is selectively absorbed from the mixture.
摘要:
The selective removal of H.sub.2 S gas from a normally gaseous mixture containing H.sub.2 S and CO.sub.2 is accomplished by contacting the gaseous mixture with an absorbent solution comprising a severely sterically hindered secondary aminoether alcohol having a cumulative .sup.- -E.sub.s value (Taft's steric hindrance constant) greater than about 1.75 whereby H.sub.2 S is selectively absorbed from the mixture.
摘要:
The selective removal of H.sub.2 S gas from a normally gaseous mixture containing H.sub.2 S and CO.sub.2 is accomplished by contacting the gaseous mixture with an absorbent solution comprising a di-secondary aminoether wherein each amino group has a severely sterically hindered secondary amino moiety whereby H.sub.2 S is selectively absorbed from the mixture.
摘要:
The selective removal of H.sub.2 S gas from a normally gaseous mixture containing H.sub.2 S and CO.sub.2 is accomplished by contacting the gaseous mixture with an absorbent solution comprising a diaminoether wherein at least one amino group is a tertiary amine whereby H.sub.2 S is selectively absorbed from the mixture.
摘要:
A novel class of diaminoether compounds wherein one amino group thereof is a tertiary amine in N-heterocyclic form and the other amino group is a severely sterically hindered secondary amino group may be prepared by a three-step process and are useful in the selective removal of H.sub.2 S from mixtures containing H.sub.2 S and CO.sub.2.