Halogenation Of Hydrocarbons

Patent metadata

Field	Value
Publication number	US-2016008786-A1
Application number	US-201514689211-A
Country	US
Kind code	A1
Filing date	Apr 17, 2015
Priority date	Oct 18, 2012
Publication date	Jan 14, 2016
Grant date	—

Abstract

The present disclosure relates to a process for the halogenation of hydrocarbon. In accordance with the process of the present disclosure a hydrocarbon and a halogen is introduced in a reaction vessel. Light having wavelength in the range of 390 to 780 nm is then passed into the reaction vessel for a time period of 2 to 12 hrs. to obtain a halogenated hydrocarbon. The hydrocarbon is agitated before or after the introduction of the halogen in to the reaction vessel.

First claim

1 . A process for halogenation of a hydrocarbon; said process comprising the following steps:
i. introducing the hydrocarbon in a reaction vessel in the form of a slurry or a solution ; ii. introducing a halogen in the reaction vessel; and iii. passing light of wavelength in the range of 390 to780 nm emitted by a plurality of solid state light emitting devices, into the reaction vessel for a predetermined time period to obtain a halogenated hydrocarbon, wherein, the hydrocarbon is agitated before or after the method step of introducing the halogen in to the reaction vessel; and wherein, said process is carried out in an inert atmosphere.

2 . The process as claimed in claim 1 , wherein the hydrocarbon is agitated with the help of a rotating stirrer at speeds ranging from 200 to 850 rpm for a time period of 5 to 60 minutes.

3 . The process as claimed in claim 1 , wherein the light is passed into the reaction vessel for a time period of 2 to 12 hrs.

4 . The process as claimed in claim 1 , wherein the solid state devices are placed outside the reaction vessel at a distance of 0.2 to 12 cm from the exterior wall of the reaction vessel, preferably at a distance of 0.5 to 4 cm.

5 . The process as claimed in claim 1 , wherein the step of passing light from a bank of solid state light emitting devices includes guiding the beam of light to a reaction zone of the reaction vessel in which the process is taking place.

6 . The process as claimed in claim 1 , further comprises the step of heating the hydrocarbon at a temperature in the range of 40 to 90° C. before executing step (ii).

7 . The process as claimed in claim 1 , wherein the hydrocarbon is at least one selected from the group consisting of a compound comprising at least one C—H group, polymers, aliphatic hydrocarbons and aromatic hydrocarbons, wherein the polymer is selected from the group consisting of Polyvinyl Chloride, polyolefin, polyester and a rubber compound.

8 . The process as claimed in claim 1 , wherein the hydrocarbon is Polyvinyl Chloride and the process involves efficient halogenation of Polyvinyl Chloride.

9 . The process as claimed in claim 1 , wherein the halogen is selected from chlorine, bromine, and halogenated compounds liberating radical of chlorine or bromine upon light irradiation by solid state light emitting devices.

10 . An apparatus for halogenation of a hydrocarbon, said apparatus comprising a reaction vessel, purging means to purge fluid into said reaction vessel, a centrally mounted stirrer and a bank of solid state light emitting devices.

11 . The apparatus as claimed in claim 10 , which includes guiding means to guide the light from the solid state light emitting devices to a reaction zone of the reaction vessel.

12 . The apparatus as claimed in claim 10 , wherein the solid state light emitting device is at least one selected from the group consisting of LED, LASER, Organic Electroluminescence material, Inorganic Electroluminescence, Organic Light Emitting Diodes and Inorganic Light emitting Diodes.

13 . The apparatus as claimed in claim 10 , wherein a light source from which the light having wavelength of 390 to 780 nm is passed, is a bank of solid state light emitting devices placed on at least one location selected from the group consisting of outside the reaction vessel, inside the reaction vessel and embedded on the walls of the reaction vessel.

14 . The apparatus as claimed in claim 10 , wherein the bank of solid state light emitting devices is placed at a distance of 0.2 to 12 cm from the exterior wall of the reaction vessel, preferably at a distance of 0.5 to 4 cm.

15 . The apparatus as claimed in claim 10 , wherein the reaction vessel is glass walled and transparent.

Assignees

• Reliance Ind Ltd

Inventors

• Jasra Rakshvir
• Ingle Ninad Deepak
• Kapadia Pradeep Paresh
• Munshi Pradip

Classifications

• C08F8/22

  by reaction with free halogens · CPC title

• C07C17/14

  in the side-chain of aromatic compounds · CPC title

• B01J19/18

  Stationary reactors having moving elements inside (B01J19/08, B01J19/26 take precedence) · CPC title

• C08F136/06

  Butadiene · CPC title

• B01J19/121

  Coherent waves, e.g. laser beams (lasers per se H01S3/00) · CPC title