Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1981-10-05
1984-03-27
Reamer, James H.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
203 62, 203 71, C07C 4562
Patent
active
044396236
ABSTRACT:
There is disclosed an improved process for the preparation of monochloroacetone by reacting acetone and chlorine in a vapor-liquid phase reactor and passing the reactor effluent through a fractionator to remove the liquid phase consisting mainly of monochloroacetone (MCA). The fractionator vapor phase effluent is consisting of acetone, hydrogen chloride, some monochloroacetone, and some reaction by-products sequentially fractionated in a series of condensers of varying temperatures such that the hydrogen chloride is isolated free of impurities and the remaining reaction materials, consisting mainly of acetone with some dissolved hydrogen chloride are available for recycling back into the reactor. The hydrogen chloride, isolated in the vapor phase, may be quenched with water to produce concentrated aqueous hydrochloric acid which may be used in other chemical procedures or it may be compressed into anhydrous hydrogen chloride. The process improvement has the advantage of eliminating all environmentally hazardous wastes such that none of the material used in the reaction is discarded as was done in the past. In addition, the improved process considerably reduces the energy requirements therefor by eliminating a costly extractive distillation step. All of the reaction products are either recycled back into the monochloroacetone reactor or are separate chemical products usable in other chemical steps.
REFERENCES:
patent: 2116893 (1938-05-01), Heisel
patent: 2234484 (1941-03-01), Rahrs
patent: 2235562 (1941-03-01), Rahrs
patent: 2243484 (1941-05-01), Morey
patent: 2397240 (1941-05-01), Morey
patent: 3397240 (1968-08-01), Kaufman et al.
patent: 3761361 (1973-09-01), Walls
Perry, "Chem. Eng. Handbook", pp. 13-32 to 13-41, (1963).
Japan Patent 50037714 Supplied as Derwent Abstract 676251W/40.
Japan Patent 75037650 Supplied as Derwent Abstract 02840X/02.
Japan Patent 52125105 Supplied as Derwent Abstract 85528Y/48.
Krieger Kenneth H.
Naldi Lawrence J.
Rosas Carlos B.
Samant Vijay
Merck & Co. , Inc.
Monaco Mario A.
Reamer James H.
Rose David L.
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