摘要:
A process and apparatus for recovering dichlorohydrins from a mixture comprising dichlorohydrins, one or more compounds selected from esters of dichlorohydrins, monochlorohydrins and/or esters thereof, and multihydroxylated-aliphatic hydrocarbon compounds and/or esters thereof, and optionally one or more substances comprising water, chlorinating agents, catalysts and/or esters of catalysts is disclosed. The mixture is distilled or fractionated to separate a lower boiling fraction comprising dichlorohydrin(s) from the mixture to form a higher boiling fraction comprising the residue of the distillation or fractionation. The higher boiling fraction is stripped to recover remaining dichlorohydrins. Advantages include more efficient recovery of dichlorohydrins for a given distillation column, less waste due to avoiding the conditions conducive to the formation of heavy byproducts, and reduced capital investment in recovery equipment.
摘要:
A process and apparatus for recovering dichlorohydrins from a mixture comprising dichlorohydrins, one or more compounds selected from esters of dichlorohydrins, monochlorohydrins and/or esters thereof, and multihydroxylated-aliphatic hydrocarbon compounds and/or esters thereof, and optionally one or more substances comprising water, chlorinating agents, catalysts and/or esters of catalysts is disclosed. The mixture is distilled or fractionated to separate a lower boiling fraction comprising dichlorohydrin(s) from the mixture to form a higher boiling fraction comprising the residue of the distillation or fractionation. The higher boiling fraction is stripped to recover remaining dichlorohydrins. Advantages include more efficient recovery of dichlorohydrins for a given distillation column, less waste due to avoiding the conditions conducive to the formation of heavy byproducts, and reduced capital investment in recovery equipment.
摘要:
A process and apparatus for recovering dichlorohydrins from a mixture comprising dichlorohydrins, one or more compounds selected from esters of dichlorohydrins, monochlorohydrins and/or esters thereof, and multihydroxylated-aliphatic hydrocarbon compounds and/or esters thereof, and optionally one or more substances comprising water, chlorinating agents, catalysts and/or esters of catalysts is disclosed. The mixture is stripped to recover dichlorohydrin(s) while distilling or fractionating the mixture to separate a lower boiling fraction comprising dichlorohydrin(s) from the mixture in one step. Advantages include more efficient recovery of dichlorohydrins for a given distillation column, less waste due to avoiding the conditions conducive to the formation of heavy byproducts, and reduced capital investment in recovery equipment.
摘要:
A process and apparatus for recovering dichlorohydrins from a mixture comprising dichlorohydrins, water, one or more compounds selected from esters of dichlorohydrins, monochlorohydrins and/or esters thereof, and multihydroxylated-aliphatic hydrocarbon compounds and/or esters thereof, and optionally one or more substances comprising chlorinating agents, catalysts and/or esters of catalysts is disclosed. A liquid aqueous phase is recycled to the distillation column while distilling or fractionating the mixture to separate dichlorohydrin(s) and water from the mixture. Advantages include more efficient recovery of dichlorohydrins for a given distillation column, less waste due to avoiding the conditions conducive to the formation of heavy byproducts, and reduced capital investment in recovery equipment.
摘要:
A process and apparatus for recovering dichlorohydrins from a mixture comprising dichlorohydrins, one or more compounds selected from esters of dichlorohydrins, monochlorohydrins and/or esters thereof, and multihydroxylated-aliphatic hydrocarbon compounds and/or esters thereof, and optionally one or more substances comprising water, chlorinating agents, catalysts and/or esters of catalysts is disclosed. The mixture is stripped to recover dichlorohydrin(s) while distilling or fractionating the mixture to separate a lower boiling fraction comprising dichlorohydrin(s) from the mixture in one step. Advantages include more efficient recovery of dichlorohydrins for a given distillation column, less waste due to avoiding the conditions conducive to the formation of heavy byproducts, and reduced capital investment in recovery equipment.
摘要:
A process and apparatus for recovering dichlorohydrins from a mixture comprising dichlorohydrins, water, one or more compounds selected from esters of dichlorohydrins, monochlorohydrins and/or esters thereof, and multihydroxylated-aliphatic hydrocarbon compounds and/or esters thereof, and optionally one or more substances comprising chlorinating agents, catalysts and/or esters of catalysts is disclosed. A liquid aqueous phase is recycled to the distillation column while distilling or fractionating the mixture to separate dichlorohydrin(s) and water from the mixture. Advantages include more efficient recovery of dichlorohydrins for a given distillation column, less waste due to avoiding the conditions conducive to the formation of heavy byproducts, and reduced capital investment in recovery equipment.
摘要:
A process and apparatus for producing chlorohydrin comprising reacting a multihydroxylated-aliphatic hydrocarbon-containing stream with a stream of a first effluent exiting from a hydrochlorination reactor in at least one vessel wherein the vessel exhibits a plug flow residence time characteristic, under conditions such that at least a portion of any unreacted HCl component present in the first effluent is reacted with the multihydroxylated-aliphatic hydrocarbon present in the multihydroxylated aliphatic hydrogen-containing stream to from an amount of monochlorohydrin in a stream of a second effluent exiting from the plug flow vessel; recovering said second effluent; and then optionally using the second effluent from the plug flow reactor in a subsequent processing operation.
摘要:
A process and apparatus for producing chlorohydrin comprising reacting a multihydroxylated-aliphatic hydrocarbon-containing stream with a stream of a first effluent exiting from a hydrochlorination reactor in at least one vessel wherein the vessel exhibits a plug flow residence time characteristic, under conditions such that at least a portion of any unreacted HCl component present in the first effluent is reacted with the multihydroxylated-aliphatic hydrocarbon present in the multihydroxylated aliphatic hydrogen-containing stream to from an amount of monochlorohydrin in a stream of a second effluent exiting from the plug flow vessel; recovering said second effluent; and then optionally using the second effluent from the plug flow reactor in a subsequent processing operation.
摘要:
A process and apparatus for recovering dichlorohydrins from a mixture comprising dichlorohydrins, one or more compounds selected from esters of dichlorohydrins, monochlorohydrins and/or esters thereof, and multihydroxylated-aliphatic hydrocarbon compounds and/or esters thereof, and optionally one or more substances comprising water, chlorinating agents, catalysts and/or esters of catalysts is disclosed. The mixture is distilled or fractionated to separate a lower boiling fraction comprising dichlorohydrin(s) from the mixture to form a higher boiling fraction comprising the residue of the distillation or fractionation. The higher boiling fraction is distilled or fractionated to separate remaining dichlorohydrin(s) from the above mixture to form an even higher boiling fraction comprising the residue of the distillation or fractionation. At least some of the lower boiling fraction and the dichlorohydrin(s) are recovered. Advantages include more efficient recovery of dichlorohydrins for a given distillation column, less waste due to avoiding the conditions conducive to the formation of heavy byproducts, reduced capital investment in recovery equipment, and reduced energy utilization while maintaining the quality of dichlorohydrin product produced and not increasing the amount of undesired byproducts formed.
摘要:
The present invention is directed to a process for producing a high molecular weight condensation polymer by removing unwanted by-product(s) from a polycondensation equilibrium reaction mixture using a centrifugal force device equipped with a vacuum.