The present application relates to a field of ethylene oxide recycling system, which includes an EO sterilization module, an oil-gas separation module, a cooling separation module, a storage module and a vaporization circulation module. The oil-gas separation module used to separate oil from exhaust gas is connected with the EO sterilization module. The cooling separation module used for cooling the exhaust gas is connected with the oil-gas separation module. The storage module for storing the ethylene oxide is connected with the cooling separation module. The vaporization circulation module for vaporize the ethylene oxide is connected with the storage module. The vaporization circulation module is further connected with the EO sterilization module, so as to form a circulation.

The present application relates to a field of ethylene oxide recycling system, which includes an EO sterilization module, an oil-gas separation module, a cooling separation module, a storage module and a vaporization circulation module. The oil-gas separation module used to separate oil from exhaust gas is connected with the EO sterilization module. The cooling separation module used for cooling the exhaust gas is connected with the oil-gas separation module. The storage module for storing the ethylene oxide is connected with the cooling separation module. The vaporization circulation module for vaporize the ethylene oxide is connected with the storage module. The vaporization circulation module is further connected with the EO sterilization module, so as to form a circulation.

A process for the preparation of ethylene oxide in which a conventional ethylene oxide process is modified by supplement with a second chiller and a tempered water system.

A process for the preparation of ethylene oxide in which a conventional ethylene oxide process is modified by supplement with a second chiller and a tempered water system.

There is provided a method of producing ethylene oxide and ethylene glycol capable of reducing a concentration in discharged water of 1,4-dioxane contained generated in a step of producing ethylene oxide and ethylene glycol.

A method of producing ethylene oxide and ethylene glycol includes a predetermined step of producing ethylene oxide, and a step of extracting a part of a column bottom liquid of an ethylene oxide stripping column in the step of producing ethylene oxide and supplying the extracted column bottom liquid to a by-produced ethylene glycol concentration column, concentrating ethylene glycol produced as a by-product in the step of producing ethylene oxide, and distilling and separating 1,4-dioxane produced as a by-product in the step of producing ethylene oxide, wherein the by-produced ethylene glycol concentration column is a divided wall distillation column.

There is provided a method of producing ethylene oxide and ethylene glycol capable of reducing a concentration in discharged water of 1,4-dioxane contained generated in a step of producing ethylene oxide and ethylene glycol.

A method of producing ethylene oxide and ethylene glycol includes a predetermined step of producing ethylene oxide, and a step of extracting a part of a column bottom liquid of an ethylene oxide stripping column in the step of producing ethylene oxide and supplying the extracted column bottom liquid to a by-produced ethylene glycol concentration column, concentrating ethylene glycol produced as a by-product in the step of producing ethylene oxide, and distilling and separating 1,4-dioxane produced as a by-product in the step of producing ethylene oxide, wherein the by-produced ethylene glycol concentration column is a divided wall distillation column.

Embodiments provide a process for purifying an alkylene oxide composition, which comprises (1) obtaining a crude alkylene oxide composition comprising an ionic component; (2) passing the crude alkylene oxide composition through a molecular sieve; and (3) obtaining a purified alkylene oxide composition. A purified alkylene oxide composition suitable for a subsequent process can be obtained.

Embodiments provide a process for purifying an alkylene oxide composition, which comprises (1) obtaining a crude alkylene oxide composition comprising an ionic component; (2) passing the crude alkylene oxide composition through a molecular sieve; and (3) obtaining a purified alkylene oxide composition. A purified alkylene oxide composition suitable for a subsequent process can be obtained.

The invention describes a low temperature process for high performance epoxy resins purification via membrane separation technology. Continuous or semi-continuous low temperature processing grants a minimized material aging during product purification as for example glycidyl amine based resins.

The present disclosure provides a gas liquefaction separator, a gas liquefaction recovery system, and a method for separating and recovering ethylene oxide. The gas liquefaction separator includes a housing, a blocking plate, a gas baffle, and a liquid collector, the latter three being located inside the housing. The liquid collector—an outer edge of which is connected to an inner wall of the housing—is located below the gas baffle, which is located below the blocking plate. The liquid collector includes a first flow guide surface, on a bottom portion of which is disposed a first hole. The gas baffle—an upper surface of which forms a second flow guide surface and an outer edge of which has a protrusion(s)—is connected to the first flow guide surface through the protrusion(s), thereby forming a second hole between the outer edge of the gas baffle and the first flow guide surface.