Removal of acid gases from a sour gaseous stream
    21.
    发明公开
    Removal of acid gases from a sour gaseous stream 失效
    加泰罗尼亚加拿大。

    公开(公告)号:EP0186235A1

    公开(公告)日:1986-07-02

    申请号:EP85202025.4

    申请日:1985-12-05

    IPC分类号: B01D53/34 C10K1/08

    摘要: A sour gaseous stream comprising H 2 S is contacted in column 2 with an aqueous reactant solution comprising an effective amount of Fe(III) chelate of an organic acid to obtain a sweet gaseous stream and a mixture including solid sulphur and Fe(II) chelate of the acid. Degradation of the iron chelate in the reactant solution employed in the cyclic processes for H 2 S removal from sour gaseous streams is inhibited by maintaining a relatively high Fe(II) chelate concentration by carrying out the regeneration step in colomn 8 as a plug flow contacting procedure.

    摘要翻译: 包含H 2 S的酸性气流与含有有机酸的有效量的Fe(III)螯合物的水反应物溶液在第2柱中接触以获得甜味气流,以及包含固体硫和Fe(II)螯合物的混合物 酸。 通过在作为活塞流接触程序的colomn 8中进行再生步骤来保持较高的Fe(II)螯合浓度,可以抑制用于从酸性气流中除去H 2 S的循环方法中所用的反应物溶液中的铁螯合物的降解。

    H2S removal
    29.
    发明公开
    H2S removal 失效
    Entfernung von H2S。

    公开(公告)号:EP0107213A1

    公开(公告)日:1984-05-02

    申请号:EP83201256.1

    申请日:1983-08-31

    IPC分类号: B01D53/34 C01B17/05

    摘要: In a process for the removal of H 2 S from sour gas by contacting the gas with an aqueous solution containing an oxidizing polyvalent metal chelate, the reduced chelate is regenerated in an electrochemical cell in which anode and cathode are separated by a hydrogen ion permeable barrier and (a) oxygen is supplied to the cathode and water is formed at the cathode, or (b) hydrogen is produced at the cathode.

    摘要翻译: 在通过使气体与含有氧化性多价金属螯合物的水溶液接触来从酸性气体中除去H 2 S的方法中,还原的螯合物在电化学电池中再生,其中阳极和阴极被氢离子可渗透屏障分离, a)向阴极供应氧气,在阴极处形成水,或(b)在阴极处产生氢气。

    Sulphur recovery process
    30.
    发明公开
    Sulphur recovery process 失效
    硫回收过程

    公开(公告)号:EP0066310A1

    公开(公告)日:1982-12-08

    申请号:EP82200553.4

    申请日:1982-05-06

    IPC分类号: B01D53/34 C01B17/05 C10K1/08

    摘要: In the removal of H 2 S and optionally CO 2 from a gas by contacting with a reactant solution containing an ion or a chelate of a polyvalent metal with formation of solid sulphur and reduced reactant, the presence of a C 4-1 -alkanol or C 4-22 -alkenol increases the crystal size of the sulphur. The solution may contain an absorbent selective for CO 2 . Regeneration of the reactant in aqueous solution with an oxygen-containing gas may produce a froth from which the sulphur is recovered by extraction with C 4-18- alkanols or C 4-20 - alkenols. Alternatively, the sulphur can be separated from aqueous solutions by extraction with C 4-15- alkanols. The presence of sodium thiocyanate, sodium dithionite, thiodiglycolic acid and/or 3,3-thio-dipropionic acid addresses degradation of the chelates.

    摘要翻译: 在通过与含有多价金属的离子或螯合物的反应物溶液接触而从气体中除去H 2 S和任选的CO 2并形成固体硫和还原反应物时,C 4 -1-链烷醇或C 4-22 - 烯醇增加了硫的晶体尺寸。 该溶液可含有对CO 2有选择性的吸收剂。 用含氧气体再生水溶液中的反应物可产生泡沫,通过用C 4-18链烷醇或C 4-20链烯醇萃取来回收硫。 或者,硫可以通过用C 4-15链烷醇萃取而从水溶液中分离。 硫氰酸钠,连二亚硫酸钠,硫二甘醇酸和/或3,3-硫代二丙酸的存在解决了螯合物的降解。