Title:
硫化水素、メルカプタン、炭酸ガス、芳香族炭化水素を含むガス中の硫黄化合物の除去方法およびその装置
Document Type and Number:
Japanese Patent JP3847712
Kind Code:
B2
Abstract:
A method and an apparatus for removing sulfur compounds, such as H2S and mercaptans, contained in an impurity gas contained in a natural gas or the like by recovering them as elementary sulfur, characterized in that it comprises a step of separating the impurity gas from the natural gas or the like, a concentration step of separating the impurity gas into a concentrated gas comprising H2S as a main component and a residual gas comprising mercaptans and CO2 as main components, a step of subjecting the concentrated gas to a Claus reaction process to recover H2S as elementary sulfur, a step of heating the off-gas from the Claus reaction process to a temperature of 700 DEG C or less and mixing the heated off-gas with the above residual gas, a step of subjecting the resultant mixed gas to a hydrogenation process to convert sulfur compounds such as a mercaptan to H2S by using a reduction catalyst, and a step of separating the H2S and recycling it to the above Clause reaction process.
Inventors:
Shinya Ishigaki
Mitsuru Kida
Takashi Sasaki
Mitsuru Kida
Takashi Sasaki
Application Number:
JP2002536001A
Publication Date:
November 22, 2006
Filing Date:
October 18, 2000
Export Citation:
Assignee:
JGC Corporation
International Classes:
C01B17/04; C10G45/08; C10L3/10; B01D53/34; B01D53/52; B01D53/77
Domestic Patent References:
| JP10028837A | ||||
| JP8290904A | ||||
| JP60258294A |
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama