# US 8,771,605 B2 · High shear system for the production of chlorobenzene > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,771,605 B2 - Document ID: US8771605B2 - Status: Granted - Kind: B2 - Application number: 12/751,152 - Filed: 2010-03-31 - Published: 2010-07-22 - Granted: 2014-07-08 - Earliest claimed: 2007-06-27 - Assignees: H R D Corporation - Applicants: Abbas Hassan; Ebrahim Bagherzadeh; Rayford G. Anthony; Gregory G. Borsinger; Aziz Hassan - Inventors: Abbas Hassan; Ebrahim Bagherzadeh; Rayford G. Anthony; Gregory G. Borsinger; Aziz Hassan - Web page: https://patentgrep.com/patent/US8771605B2 ## CPC - B01F 27/2711: {provided with intermeshing elements} - B01F 33/81: Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles - B01F 33/811: {in two or more consecutive, i.e. successive, mixing receptacles or being consecutively arranged} - B01J 8/025: {in a cylindrical shaped bed} - B01J 8/20: with liquid as a fluidising medium - B01J 8/222: {in the presence of a rotating device only} - B01J 19/0066: {Stirrers (mixing per se B01F)} - B01J 19/1806: {resulting in a turbulent flow of the reactants, such as in centrifugal-type reactors, or having a high Reynolds-number} - C07C 17/12: in the ring of aromatic compounds - B01J 2219/00006: Large-scale industrial plants - B01J 2219/00083: Coils - B01J 2219/00779: Baffles attached to the stirring means - B01F: MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING (mixing paints B44D3/06) - B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS - C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS ## Abstract Use of a high shear mechanical device incorporated into a process for the production of chlorobenzene is capable of decreasing mass transfer limitations, thereby enhancing the chlorobenzene production process. A system for the production of chlorobenzene from benzene and chlorine, the system comprising a reactor and an external high shear device, the outlet of which is fluidly connected to the inlet of the reactor; the high shear device capable of providing an emulsion of chlorine gas bubbles within liquid benzene. ## Claims ### Claim 1 A system for the production of chlorobenzene, the system comprising: a high shear device configured to produce a dispersion comprising chlorine gas bubbles having an average bubble diameter of less than about 5 μm in liquid benzene; a pump positioned upstream of the high shear device and configured to provide an inlet stream comprising chlorine gas and liquid benzene thereto; a reactor from which a reactor product comprising chlorobenzene, byproduct hydrochloric acid, and unreacted benzene is removed, wherein the reactor is fluidly connected to an outlet of the high shear device such that the dispersion may be introduced thereto; and a treatment vessel fluidly connected with the reactor, whereby the reactor product may be introduced thereto, the treatment vessel configured to remove hydrochloric acid from the reactor product via contact thereof with a water stream, thus providing an aqueous hydrochloric acid stream, and a treatment vessel product comprising chlorobenzene and unreacted benzene. ### Claim 2 (depends on 1) The system of claim 1 wherein the high shear device comprises at least one rotor and at least one complementarily-shaped stator. ### Claim 3 (depends on 2) The system of claim 2 wherein the high shear device is operable to produce a tip speed at a tip of the at least one rotor of at least about 5 m/s. ### Claim 4 (depends on 2) The system of claim 2 wherein the high shear device is operable to produce a tip speed at a tip of the at least one rotor of at least about 23 m/s. ### Claim 5 (depends on 2) The system of claim 2 wherein the high shear device is operable to produce a tip speed at a tip of the at least one rotor of at least about 40 m/s. ### Claim 6 (depends on 2) The system of claim 2 wherein the high shear device produces a localized pressure of at least about 1000 MPa at a tip of the at least one rotor during operation. ### Claim 7 (depends on 1) The system of claim 1 wherein the high shear device is operable to subject the contents therein to a shear rate of greater than about 20,000 s−1. ### Claim 8 (depends on 1) The system of claim 1 wherein the high shear device exhibits an energy expenditure of at least 1000 W/m3 during operation. ### Claim 9 (depends on 1) The system of claim 1 wherein the high shear device is configured to produce a dispersion comprising a micro-foam. ### Claim 10 (depends on 1) The system of claim 1 further comprising heat transfer apparatus configured to maintain the reactor at a temperature of less than about 40° C. ### Claim 11 (depends on 1) The system of claim 1 wherein the high shear device comprises at least two generators, each generator comprising a rotor and a complementarily-shaped stator. ### Claim 12 (depends on 1) The system of claim 1 wherein the high shear device is external to the reactor. ### Claim 13 (depends on 1) The system of claim 1 further comprising at least one distillation column downstream of the treatment vessel, wherein the distillation column is configured to separate unreacted benzene from the treatment vessel product. ### Claim 14 (depends on 13) The system of claim 13 wherein the at least one distillation column is fluidly connected to the pump, whereby unreacted benzene may be recycled to the high shear device. ### Claim 15 (depends on 1) The system of claim 1 further comprising a dispersible chlorine gas inlet upstream of the high shear device and downstream of the pump. ### Claim 16 (depends on 1) The system of claim 1 further comprising an inlet line whereby a catalyst may be introduced into the system. ### Claim 17 (depends on 16) The system of claim 16 wherein the catalyst is selected from the group consisting of Lewis acids, metallic chlorides, iodine and combinations thereof. ### Claim 18 (depends on 1) The system of claim 1 wherein the pump provides the inlet stream at a pressure of least about 203 kPa. ### Claim 19 (depends on 1) The system of claim 1 wherein the high shear device is configured to produce a dispersion comprising chlorine gas bubbles having an average bubble diameter of less than about 1.5 μm in liquid benzene. ### Claim 20 (depends on 1) The system of claim 1 wherein the high shear device is configured to provide a dispersion comprising chlorine gas bubbles having an average bubble diameter on the submicron scale in liquid benzene.