|
Match
|
Document |
Document Title |
|
|
7598406 |
Production of ethylene oxide
Process for the recovery of ethylene oxide (EO) from fat absorbent (FA) which comprises providing a feed of elevated temperature FA to an EO Stripper, providing a stripping gas feed and contacting...
|
|
|
7569710 |
Ethylene oxide recovery process
An improved process for the recovery of a high-purity, ethylene oxide-water stream for use as feed to integrated ethylene glycol or ethylene oxide purification reactors by first contacting the...
|
|
|
7404834 |
Ethylene oxide plant operation
In an ethylene oxide process, the stripping and reabsorption operations, normally carried out in separate vessels, are carried out in a single vessel which is divided by a baffle into separate...
|
|
|
7323579 |
Separation of propylene oxide from a mixture comprising propylene oxide and methanol
A method of separating propylene oxide from a mixture (M) comprising 5 to 50 percent by weight propylene oxide and 50 to 85 percent by weight methanol, said method comprising
(i) introducing...
|
|
|
7238817 |
Direct epoxidation process
A process is disclosed for reacting an olefin, hydrogen, and oxygen in a reactor in the presence of a catalyst comprising a transition metal zeolite and a noble metal to produce a reaction mixture...
|
|
|
7235677 |
Method of improving the operation of an existing ethylene oxide manufacturing process and system
Described is a method of improving the process and operation of an existing system for manufacturing ethylene oxide. The ethylene oxide manufacturing system includes an epoxidation reactor system...
|
|
|
7153985 |
Ethylene oxide production
A process for the formation of ethylene oxide wherein the presence of at least one hydrocarbon having four carbon atoms per molecule in the recycle loop gas of the process is used as an indicator...
|
|
|
6958304 |
Method for regenerating a zeolite catalyst
A process for the regeneration of a zeolite catalyst which comprises treating the catalyst thermally in the presence of a gas stream at temperatures above 120° C., the weight-based residence time...
|
|
|
6749668 |
Process for the recovery of combustible components of a gas stream
A process for the recovery of combustible components of a gas stream containing the combustible components and oxygen by selective absorption of the combustible components in a solvent, whereby...
|
|
|
6727389 |
Cyclic organo-oxide storage vent scrubbing
A method for processing at least one cyclic organo-oxide using a closed loop scrubber/holding tank system that contains at least one amine, and circulating the amine through the closed loop while...
|
|
|
6596882 |
Recovery and purification of 3,4-epoxy-1-butene using water-miscible solvents
Disclosed is a method of recovering and purifying 3,4-epoxy-1-butene (epoxybutene) from an epoxidation effluent gas obtained by the vapor phase, catalytic, partial oxidation of 1,3-butadiene...
|
|
|
6500970 |
Recovery and purification of 3,4-epoxy-1-butene using high-boiling solvents
Disclosed is a process of recovering 3,4-epoxy-1-butene (epoxybutene) from an epoxybutene-laden reaction product gas by absorption into a high-boiling solvent. Also disclosed is a process for the...
|
|
|
6500311 |
Propylene oxide purification
A mixture of propylene oxide and methanol is separated by liquid/liquid extraction using water and a hydrocarbon such as n-octane as extractive solvents.
|
|
|
6452027 |
Heat recovery procedure
The present invention provides a process treating the cycle gas from an ethylene oxide reactor to avoid heat losses in a carbonate scrubbing system as well as glycol formation in the carbonate...
|
|
|
6395913 |
Recovery and purification of 3,4-epoxy-1-butene
Disclosed is a method of recovering and purifying 3,4-epoxy-1-butene (epoxybutene) from a reaction product gas, obtained by the vapor phase catalytic partial oxidation of 1,3-butadiene with oxygen...
|
|
|
6024840 |
Propylene oxide purification
Propylene oxide obtained by an epoxidation process which uses methanol as a solvent may be effectively treated to remove acetaldehyde by subjecting the crude epoxidation reaction product to...
|
|
|
6018061 |
Process for recovering 3,4-epoxy-1-butene
A process for recovering 3,4-epoxy-1-butene from a vapor phase catalytic oxidation reactor effluent where 1,3-butadiene is reacted with oxygen over a silver catalyst, the process includes the steps...
|
|
|
5756779 |
Recovery of 3,4-epoxy-1-butene from 1,3-butadiene oxidation effluents
Disclosed are improved processes for the recovery of 3,4-epoxy-1-butene (epoxybutene) from an epoxidation effluent comprising epoxybutane, butadiene, oxygen and an inert diluent obtained by the...
|
|
|
5563282 |
Thermal process for removal of contaminants from process streams
A method of controlling the build-up of organic and/or inorganic contaminants (e.g., carbonates, nitrates, nitrites, and the like) in an aqueous process stream, comprising directing at least some...
|
|
|
5559255 |
Method of recovering ethylene oxide
The present invention relates to a method of recovering ethylene oxide comprising the steps of: bringing a mixed gas containing ethylene oxide into contact with an absorbent so as to cause the...
|
|
|
5519152 |
Manufacturing ethylene oxide
A process of manufacturing ethylene oxide is presented in ethylene and free oxygen are reacted in the presence of methane, carbon dioxide, and argon in a reactor to form an effluent comprising...
|
|
|
5440058 |
Method for separating compounds in process streams
A method, especially applicable on a continuous basis to commercial process streams, for treating unwanted by-products and/or impurities contained in those streams. The method comprises the...
|
|
|
5331084 |
Fluorine-substituted epoxides and a method for their preparation
Fluorine-substituted epoxides of the formula ##STR1## in which the substituents R 1 to R 4 , independently of one another, have the following meanings: R 1 to R 4 =H, fluorine, C 1 - to C 18 ...
|
|
|
5312931 |
Recovery of 3,4-epoxy-1-butene from 1,3,-butadiene oxidation effluents
Disclosed are improved processes for the recovery of 3,4-epoxy-1-butene (EpB) from an epoxidation effluent comprising EpB, butadiene, oxygen and butane obtained by the selective epoxidation of...
|
|
|
5248794 |
Process for purifying propylene oxide
A process for purifying propylene oxide containing an unacceptable quantity of a poly(propylene oxide) polymer contaminant having a molecular weight of at least about 50,000, comprising the step of...
|
|
|
5233060 |
Ethylene recovery in direct-oxidation ethylene oxide processes
In a direct-oxidation ethylene oxide process of the type comprising a) reacting a feed gas stream including ethylene and a commercially-pure oxygen in one or more reactors and b) absorbing out...
|
|
|
5043461 |
Process for the production of oxides
An improved process for the production of oxides from hydrocarbons by reaction with oxygen, air or a gas enriched in oxygen relative to air, preferably the latter, in the presence of a suitable...
|
|
|
4983260 |
Process for concentrating aqueous ethylene oxide solutions
A process for the concentration of ethylene oxide in an impure solution thereof including adding the solution and steam to a distillation column, recovering the gaseous stream therefrom containing...
|
|
|
4875909 |
Method for recovery of ethylene oxide
In the recovery of ethylene oxide from the gas resulting from catalytic gas-phase oxidation of ethylene with a molecular oxygen-containing gas and consequently containing ethylene oxide, a method...
|
|
|
4847393 |
Process for the production of ethylene oxide
In a process of producing ethylene oxide by contacting ethylene and oxygen with a main body of a solid catalyst in a reaction zone and passing product from that zone through a substantial volume to...
|
|
|
4822900 |
Production of ethylene oxide
Ethylene oxide is produced by contacting ethylene and oxygen in the presence of a chlorine containing reaction modifier with a silver containing catalyst, nitropropane being also present. The...
|
|
|
4508927 |
Preparation of glycols from ethylene oxide
A process for preparation of glycols in which the vapor remaining after the partial condensation of a conventional ethylene oxide stripper overhead vapor stream is contacted with an aqueous...
|
|
|
4335014 |
Process for improving the activity of supported silver catalysts
Supported silver catalysts, which should have as high an activity as possible, are employed for the manufacture of ethylene oxide by oxidizing ethylene by means of oxygen or air. A process is...
|
|
|
4256604 |
Method for mixing gases and apparatus used therefor
A method for mixing a hydrocarbon-containing gas flow with a molecular oxygen-containing gas flow, wherein at least one aqueous medium sealing zone allowing the hydrocarbon-containing gas flow to...
|
|
|
4233221 |
Ethylene carbonate process
An improved process for making ethylene carbonate wherein ethylene oxide and carbon dioxide are passed over an anion exchange resin catalyst and wherein the ethylene oxide and carbon dioxide...
|
|
|
4221727 |
Ethylene oxide recovery
In the manufacture of ethylene oxide by the partial oxidation of ethylene in the vapor phase, the effluent gases from the reaction are absorbed in water prior to separation and purification of the...
|
|
|
4033617 |
Process for the purification of ethylene oxide
Crude ethylene oxide present in the dilute aqueous solution resulting from the extraction with an aqueous solvent of ethylene oxide from the gaseous stream obtained by catalytic oxidation of...
|
|
|
3964980 |
Process for the recovery of ethylene oxide
The conventional process for the recovery of ethylene oxide produced by the silver catalyzed, vapor phase, partial oxidation of ethylene with molecular oxygen involves a sequence of steps including...
|
|
|
3922314 |
Process for the preparation of ethylene glycol
A process for the production of ethylene glycol by hydrolysis of ethylene oxide with water which comprises enriching the aqueous solution originating from stripping the gases from the catalytic...
|
|
|
3904656 |
Process for preparing monoethylene glycol and ethylene oxide
An improved process for preparing fiber grade monoethylene glycol is provided which obviates the need for sewering large amounts of water.
|
|
|
3888889 |
Process for propylene oxide
This case relates to a process for the production of propylene oxide by oxidising propylene in the presence of an elemental silver catalyst which is modified on the surface by an additive which is...
|
|
|
3523957 |
PROCESS FOR PRODUCING AN OLEFINIC OXIDE
|
|
|
3418338 |
Water extractive distillation of an ethylene oxide stream containing formaldehyde
|
|
|
3265593 |
Removal of acetaldehyde from ethylene oxide by extractive distillation
|
|
|
3165539 |
Recovery of ethylene oxide from a liquid mixture thereof with normally gaseous impurities
|
|
|
3091622 |
Ethylene oxide production
|
|
|
3597452 |
Title is not available
|
|
|
3644432 |
Title is not available
|