Title:
残存硫化水素の除去方法
Document Type and Number:
Japanese Patent JP6696189
Kind Code:
B2
Abstract:
Provided is a method for removing residual hydrogen sulfide, whereby hydrogen sulfide remaining in a reaction container can be efficiently removed in a short operation time. The method for removing residual hydrogen sulfide pertaining to the present invention comprises removing hydrogen sulfide remaining in a reaction container in which a sulfurizing agent is added to a solution and a sulfuration reaction is generated, the method wherein the solution is withdrawn from the reaction container, an amount of water corresponding to 30 vol% to 100 vol% of the total volume of the reaction container after withdrawal of the solution is added and stirred, and a replacement treatment is then performed in which the reaction container from which the water is withdrawn is filled with an inert gas.
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Inventors:
Tomohisa Fukuya
Takao Oishi
Takao Oishi
Application Number:
JP2016014137A
Publication Date:
May 20, 2020
Filing Date:
January 28, 2016
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C22B23/00; B01D53/14; B08B9/08; C22B3/08; C22B3/44
Domestic Patent References:
| JP2014028724A | ||||
| JP57048380A | ||||
| JP2014234212A |
Foreign References:
| US20060110305 |
Other References:
厚生労働省,硫化水素発生器の洗浄水を硫化水素吸収塔に投入する作業中、硫化水素中毒,職場のあんぜんサイト:労働災害事例,日本,厚生労働省,2013年 1月 6日,URL,http://web.archive.org/web/20130106013601/http://anzeninfo.mhlw.go.jp/anzen_pg/SAI_DET.aspx?joho_no=100773
Attorney, Agent or Firm:
Masayuki Masabayashi
Hayashi Ichiyoshi
Hayashi Ichiyoshi