公开(公告)号：US11787756B2

公开(公告)日：2023-10-17

申请号：US17147774

申请日：2021-01-13

Applicant: SPOLEK PRO CHEMICKOU A HUTNI VYROBU A.S.

Inventor： Pavel Kubicek ,  Vlastimil Briza ,  Tomas Pittner ,  Tomas Riedel

IPC: C07C17/10 ,  B01D3/14 ,  C07C17/383 ,  C07C17/395 ,  C07C17/38 ,  C07C17/06

CPC classification number: C07C17/10 ,  B01D3/143 ,  C07C17/06 ,  C07C17/38 ,  C07C17/383 ,  C07C17/395 ,  C07C17/10 ,  C07C19/041 ,  C07C17/383 ,  C07C19/041

Abstract: A process for producing carbon tetrachloride comprising reacting i) chlorine, ii) a C1 chlorinated compound comprising 1 to 3 chlorine atoms, and iii) a carbon/second chlorine source, wherein the second chlorine source comprises a range of multichlorinated C3 hydrocarbons, said range being obtained as waste products from the industrial production of 1,1,1,2,3-pentachloropropane and/or 1,1,3,3-tetrachloropropene.

公开(公告)号：US20230322650A1

公开(公告)日：2023-10-12

申请号：US18011416

申请日：2021-07-16

Applicant: SHOWA DENKO K.K.

Inventor： Kanako KOGASHI

IPC: C07C17/38 ,  B01D53/14

CPC classification number: C07C17/38 ,  B01D53/1493 ,  B01D2251/304 ,  B01D2251/306 ,  B01D2256/26 ,  B01D2257/2022

Abstract: There is provided a halon purification method capable of simply, safely, and efficiently removing mixed bromine molecules to obtain high purity halon. The halon purification method is a method for removing bromine molecules from crude halon containing halon and the bromine molecules, and the method includes: a contact step of bringing the crude halon into contact with an absorbing liquid containing an aqueous solution containing metal iodide to obtain a mixed liquid containing the crude halon and the absorbing liquid; and a separation step of separating the halon from the mixed liquid to obtain the halon and the absorbing liquid having absorbed the bromine molecules.

公开(公告)号：US11299446B2

公开(公告)日：2022-04-12

申请号：US17121894

申请日：2020-12-15

Applicant: Arkema France

Inventor： Abdelatif Baba-Ahmed ,  Bertrand Collier ,  Dominique Deur-Bert ,  Laurent Wendlinger

IPC: C07C21/18 ,  C07C19/08 ,  C07C19/10 ,  C07C19/03 ,  C07C17/386 ,  C07C17/383 ,  C07C17/38 ,  C09K5/04

Abstract: The invention relates to a method for producing and purifying 2,3,3,3-tetrafluoro-1-propene using a first composition comprising 2,3,3,3-tetrafluoro-1-propene, 3,3,3-trifluoropropene (1243zf), and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E), said method comprising the steps of: (a) bringing said first composition into contact with at least one organic extraction agent in order to form a second composition; (b) extractive distilaation of said second composition in order to form (i) a third composition comprising said organic extraction agent, 3,3,3-trifluoropropene (1243zf), and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E), and (ii) a stream comprising the 2,3,3,3-tetrafluoro-1-propene; and (c) recovery and separation of said third composition in order to form a stream comprising said organic extraction agent and a stream comprising 3,3,3-trifluoropropene (1243zf) and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E).

公开(公告)号：US11034634B2

公开(公告)日：2021-06-15

申请号：US16481300

申请日：2018-01-31

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Kazuhiro Takahashi ,  Tatsuya Takakuwa

IPC: C07C17/20 ,  C07C17/383 ,  C07C17/25 ,  C07C17/38 ,  C07C17/263 ,  C07C21/18

Abstract: A method for producing a fluorine-containing halogenated hydrocarbon comprising reacting a chlorine-containing compound and hydrogen fluoride in a vapor phase, and a separation step of separating a reaction product containing hydrogen fluoride, hydrogen chloride, and organic matter containing the fluorine-containing halogenated hydrocarbon into multiple components, the separation step comprising: separating the reaction product into a gas phase and a liquid phase, increasing the pressure of the liquid phase and supplying the liquid phase into a distillation column, compressing the gas phase and supplying the gas phase into the distillation column, separating a first stream containing the hydrogen chloride from the top of the distillation column, and separating a second stream containing the organic matter and the hydrogen fluoride from the bottom of the distillation column. The method is for stably obtaining a target compound by preventing hydrogen fluoride contained in the outlet gas from condensing during compression.

公开(公告)号：US20210171425A1

公开(公告)日：2021-06-10

申请号：US17173166

申请日：2021-02-10

Applicant: SPOLEK PRO CHEMICKOU A HUTNI VYROBU A.S.

Inventor： Zdenek ONDRUS ,  Pavel KUBICEK ,  Karel FILAS ,  Petr SLADEK

IPC: C07C17/25 ,  C07C21/04 ,  C07C17/38 ,  C07C17/383 ,  C07C17/395

Abstract: Disclosed is a process for preparing a chlorinated alkene, comprising contacting a chlorinated alkane with a catalyst in a dehydrochlorination zone to produce a liquid reaction mixture comprising the chlorinated alkane and the chlorinated alkene, and extracting chlorinated alkene from the reaction mixture, wherein the concentration of the chlorinated alkene in the reaction mixture present in the dehydrochlorination zone is controlled such that the molar ratio of chlorinated alkene:chlorinated alkane is from 1:99 to 50:50.

公开(公告)号：US10689315B2

公开(公告)日：2020-06-23

申请号：US16337408

申请日：2018-06-25

Applicant: Zhejiang Quhua Fluor-Chemistry Co Ltd

Inventor： Jiangyong Hong ,  Bo Yang ,  Yang Zhao ,  Yan Zhang ,  Huadong Zhou ,  Hao Ouyang ,  Haitao Gong ,  Min Fang

IPC: C07C17/20 ,  B01J23/80 ,  B01J23/825 ,  C07C17/23 ,  C07C17/38 ,  C07C19/08 ,  C07C21/18

Abstract: The invention discloses a method for co-operating low-carbon foaming agents, comprising: preheating 1,1,1,3,3-pentachloropropane and hydrogen fluoride and then introducing into a reactor to have a reaction in the presence of a catalyst to obtain a reaction product, and separating and purifying to obtain the following low-carbon foaming agent products: trans-1,3,3,3-tetrafluoropropene, cis-1,3,3,3-tetrafluoropropene, 1,1,1,3,3-pentafluoropropane, trans-1-chloro-3,3,3-trifluoropropene, cis-1-chloro-3,3,3-trifluoropropene. The invention has the advantages of simple process, environmental friendliness, high production efficiency and low cost.

公开(公告)号：US10647643B2

公开(公告)日：2020-05-12

申请号：US15745489

申请日：2016-07-14

Applicant: MEXICHEM FLUOR S.A. DE C.V.

Inventor： Emma Jayne Hodgson ,  James Henry Murray ,  Gary Lloyd

IPC: C07C17/38

Abstract: The present invention provides a method for purifying a fluid comprising a first drying stage which comprises contacting a first fluid stream comprising one or more hydro(chloro)fluoroolefins and water with a source of sulphuric acid to produce a first treated fluid stream comprising the hydro(chloro)fluoroolefin(s) and a first spent sulphuric acid stream, wherein the first treated fluid stream comprises a lower concentration of water than the first fluid stream.

公开(公告)号：US10479744B2

公开(公告)日：2019-11-19

申请号：US15708159

申请日：2017-09-19

Applicant: SPOLEK PRO CHEMICKOU A HUTNI VYROBU A.S.

Inventor： Zdenek Ondrus ,  Pavel Kubicek ,  Karel Filas ,  Petr Sladek

IPC: C07C17/25 ,  C07C17/04 ,  C07C17/383 ,  C07C17/38 ,  C07C19/01 ,  B01D3/32

Abstract: Disclosed is a process for producing highly pure chlorinated alkane in which a chlorinated alkene is contacted with chlorine in a reaction zone to produce a reaction mixture containing the chlorinated alkane and the chlorinated alkene, and extracting a portion of the reaction mixture from the reaction zone, wherein the molar ratio of chlorinated alkane:chlorinated alkene in the reaction mixture extracted from the reaction zone does not exceed 95:5.

公开(公告)号：US10392327B2

公开(公告)日：2019-08-27

申请号：US15546724

申请日：2016-02-05

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Shingo Nakamura ,  Yuusuke Etou ,  Keisuke Tano ,  Yoshinori Tanaka

IPC: C07C17/361 ,  C07C19/08 ,  C07C17/383 ,  C07C17/38 ,  F25J3/02

Abstract: A method for producing methyl fluoride, comprising the steps of: (1) pyrolyzing a starting compound in a gas phase to thereby obtain a mixed gas containing methyl fluoride and acid fluoride; and (2) rectifying the mixed gas obtained in step (1) to thereby obtain methyl fluoride.

公开(公告)号：US10125066B1

公开(公告)日：2018-11-13

申请号：US15825334

申请日：2017-11-29

Applicant: Honeywell International Inc.

Inventor： Christian Jungong ,  Daniel C. Merkel

IPC: C07C17/087 ,  C07C19/10 ,  C07C21/18 ,  C07C17/38 ,  C07C17/25 ,  C07C21/04 ,  B01J23/44 ,  B01J21/02

Abstract: A method for producing 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) from a reaction composition including a mixture of HCFC-244bb and 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) by selectively hydrogenating the HCFO-1233xf component of the mixture in a vapor phase in the presence of hydrogen gas and a catalyst to generate a product composition including unreacted HCFC-244bb and hydrogenation products of HCFO-1233xf, such as 2-chloro-1,1,1-trifluoropropane (HCFC-253db), which may be separated from the HCFC-244bb by distillation. The separated HCFC-244bb may then be purified by subsequent acid neutralization and drying steps.