Process for the production of chlorinated propenes
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C07C-017/10
C07C-017/25
C07C-021/04
출원번호
US-0123139
(2012-05-18)
등록번호
US-9056808
(2015-06-16)
국제출원번호
PCT/US2012/038613
(2012-05-18)
§371/§102 date
20131129
(20131129)
국제공개번호
WO2012/166394
(2012-12-06)
발명자
/ 주소
Tirtowidjojo, Max M.
Kruper, Jr., William J.
Fish, Barry B.
Laitar, David S.
출원인 / 주소
Dow Global Technologies, LLC
대리인 / 주소
Zerull, Susan M.
인용정보
피인용 횟수 :
13인용 특허 :
91
초록▼
Processes for the production of chlorinated propenes are provided. The present processes make use of 1,2-dichloropropane, a by-product in the production of chlorohydrin, as a low cost starting material, alone or in combination with 1,2,3-trichloropropane. The present processes can also generate anhy
Processes for the production of chlorinated propenes are provided. The present processes make use of 1,2-dichloropropane, a by-product in the production of chlorohydrin, as a low cost starting material, alone or in combination with 1,2,3-trichloropropane. The present processes can also generate anhydrous HCl as a byproduct that can be removed from the process and used as a feedstock for other processes, providing further time and cost savings. Finally, the processes are advantageously conducted in the liquid phase, thereby presenting additional savings as compared to conventional, gas phase processes.
대표청구항▼
1. A process for the production of chlorinated propenes from one or more chlorinated alkanes comprising 1,2-dichloropropane, comprising at least one liquid phase chlorination step conducted in the presence of a free radical initiator and at least one dehydrochlorination step, wherein the free radica
1. A process for the production of chlorinated propenes from one or more chlorinated alkanes comprising 1,2-dichloropropane, comprising at least one liquid phase chlorination step conducted in the presence of a free radical initiator and at least one dehydrochlorination step, wherein the free radical initiator comprises an azo compound, UV light, or a combination of these. 2. The process of claim 1, wherein the one or more chlorinated alkanes further comprise 1,2,3-trichloropropane. 3. The process of claim 1 or 2, wherein the chlorination step produces a mixture of trichloropropane, tetrachloropropane, and pentachloropropane. 4. The process of claim 1, wherein the chlorination agent comprises chlorine or SO2Cl2, or combinations of these. 5. The process of claim 1, wherein the free radical initiator further comprises one or more peroxide compounds. 6. The process of claim 1, wherein the chlorinated propene comprises 1,1,2,3-tetrachloropropene. 7. The process of claim 1, wherein HCl is generated as a byproduct and recovered as anhydrous HCl. 8. The process of claim 1, further comprising the use of a solvent in the chlorination step, wherein the solvent comprises PDC, trichloropropane isomers, tetrachloropropane isomers, carbon tetrachloride or combinations of these. 9. The process of claim 1, wherein at least one chlorination step generates a stream comprising unreacted Cl2, monochlorinated propenes and HCl, the HCl is separated from the stream as anhydrous HCl and the unreacted Cl2 is separated from the stream and recycled to the chlorination step. 10. The process of claim 1, wherein the at least one chlorination step generates a bottom stream comprising trichloropropane isomers, tetrachloropropane isomers, pentachloropropane isomers and unreacted PDC. 11. The process of claim 10, wherein the trichloropropane isomers, tetrachloropropane isomers and unreacted PDC are separated from the bottoms stream and recycled back to the chlorination step. 12. The process of claim 10, wherein the pentachloropropane isomers are separated from the bottoms stream and further separated into a first stream comprising 1,1,2,2,3-pentachloropropane and 1,1,1,2,2-pentachloropropane and a second stream comprising 1,1,2,3,3-pentachloropropane. 13. The process of claim 12, comprising caustic cracking 1,1,2,2,3-pentachloropropane and 1,1,1,2,2-pentachloropropane to provide 1,1,2,3-tetrachloropropene and 2,3,3,3-tetrachloropropene. 14. The process of claim 1, wherein the dehydrochlorination step is conducted first. 15. The process of claim 1, wherein the one or more chlorinated alkanes are generated for use in the process.
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