-
公开(公告)号：US20220411265A1
公开(公告)日：2022-12-29
申请号：US17780311
申请日：2020-12-03
Applicant: TOKUYAMA CORPORATION
Inventor： Akihiro SAITO , Dai TSUNODA , Masayuki MORIWAKI
Abstract: A method for producing a high-purity hydrogen chloride gas comprises performing a purification process that includes the steps 1) to 3) below on a byproduct hydrogen chloride gas: 1) a crude hydrochloric acid generation step of allowing water to absorb the byproduct hydrogen chloride gas; 2) a volatile organic impurity-removed hydrochloric acid generation step of bringing the crude hydrochloric acid obtained in the step 1) into contact with an inert gas at a liquid temperature of 20 to 45° C. to dissipate volatile organic impurities; and 3) a high-purity hydrogen chloride gas generation step of supplying the volatile organic impurity-removed hydrochloric acid obtained in the step 2) to a distillation column and performing distillation under conditions of a column bottom temperature of higher than 60° C. and 108° C. or lower and a column top temperature of 60° C. or lower to distill out a high-purity hydrogen chloride gas.
-
公开(公告)号：US20210403323A1
公开(公告)日：2021-12-30
申请号：US17357232
申请日：2021-06-24
Applicant: TOKUYAMA CORPORATION
Inventor： Takayuki NEGISHI , Takafumi SHIMODA , Akihiro SAITO , Naoki MATSUDA , Kenichi KAKIZONO , Takeshi KAWANO , Masayuki MORIWAKI
Abstract: The present invention provides industrially advantageous production method and production apparatus, with respect to production of a halogen oxyacid solution. There is solved by a method for producing a halogen oxyacid solution, comprising continuously supplying an organic alkaline solution and halogen to a static mixer and mixing them, to thereby continuously obtain a halogen oxyacid generated.
-
公开(公告)号：US20220356061A1
公开(公告)日：2022-11-10
申请号：US17618762
申请日：2021-04-16
Applicant: TOKUYAMA CORPORATION
Inventor： Takayuki NEGISHI , Takafumi SHIMODA , Akihiro SAITO , Naoki MATSUDA , Masayuki MORIWAKI
IPC: C01B11/04 , C07C209/68
Abstract: A method for producing halogen oxyacid, which includes a step of continuously supplying and mixing an organic alkali solution and a halogen and continuously collecting a reaction solution containing halogen oxyacid, and an production apparatus of halogen oxyacid, which includes a reactor, a means of supplying an organic alkali solution to the reactor, a means of supplying a halogen to the reactor, and a means of collecting a reaction solution for taking out the reaction solution from the reactor, in which the organic alkali solution and the halogen are continuously supplied by the means of supplying an organic alkali solution and the means of supplying a halogen, respectively, to the reactor so as to be mixed therein such that a solution containing halogen oxyacid is generated as a reaction solution, and the reaction solution is continuously collected by the means of collecting a reaction solution are provided.
-
-
Search Results
3
records
(took 0.013 seconds)
