公开(公告)号：EP1914294A1

公开(公告)日：2008-04-23

申请号：EP06767758.3

申请日：2006-06-27

申请人： CHIYODA CORPORATION

发明人： KIKKAWA, Yoshitsugi c/o CHIYODA CORPORATION ,  NOZAWA, Noriyoshi c/o CHIYODA CORPORATION ,  INOUE, Hiroshi c/o CHIYODA CORPORATION ,  SATO, Etsuro c/o CHIYODA CORPORATION

IPC分类号： C10L3/10 ,  B01D53/04 ,  B01D53/14 ,  C01B17/04 ,  C01B17/16

CPC分类号： C10L3/10 ,  B01D53/04 ,  B01D53/1462 ,  B01D53/75 ,  B01D53/8606 ,  B01D2253/108 ,  B01D2255/20761 ,  B01D2255/20769 ,  B01D2257/304 ,  B01D2257/306 ,  B01D2257/504 ,  B01D2258/06 ,  C01B17/0408 ,  C01B17/16 ,  C10L3/102 ,  Y02C10/06 ,  Y02C10/08 ,  Y02P20/152

摘要： All sulfur compounds can be efficiently removed from natural gas that contains hydrogen sulfide and other sulfur compounds such as mercaptan without using physical absorption. The process comprises an absorption step of treating natural gas by means of a chemical absorption method using an amine-containing solution to mainly remove hydrogen sulfide and carbon dioxide, an adsorption step of flowing the natural gas from the absorption step through a packed bed of a molecular sieve to mainly remove mercaptan, a recovery step of recovering sulfur compounds by converting the hydrogen sulfide removed in the absorption step into sulfur by means of the Claus process, a regeneration step of desorbing the mercaptan adsorbed on the molecular sieve in the adsorption step using heated gas and a reaction step of converting the mercaptan in the regeneration exhaust gas exhausted from the regeneration step into hydrogen sulfide. The reaction step is conducted by injecting steam or water at a ratio of H 2 O/S = 1 to 5 (molar ratio) relative to the sulfur in the regeneration exhaust gas in the presence of a catalyst under the conditions of a temperature level of 250 to 400°C and a pressure level of 1 to 10 MPa.

摘要翻译： 所有硫化合物可以从不含物理吸收的含硫化氢和其他硫化合物如硫醇的天然气中有效地除去。 该方法包括通过使用含胺溶液主要除去硫化氢和二氧化碳的化学吸收法处理天然气的吸收步骤，使吸收步骤中的天然气从吸收步骤流过的填料床的吸附步骤 分子筛，主要去除硫醇，通过Claus方法将吸收步骤中除去的硫化氢转化为硫，回收硫化合物的回收步骤，使用吸附步骤中吸附在分子筛上的硫醇解吸的再生步骤，使用 将从再生步骤排出的再生废气中的硫醇转化为硫化氢的反应工序。 反应步骤通过在催化剂存在下，在温度水平的条件下以相对于再生废气中的硫的H 2 O / S = 1〜5（摩尔比）的比例，注入蒸汽或水 250〜400℃，压力水平为1〜10MPa。