Ethylene oxide (EO) was initially manufactured using ethylene chlorohydrin as an intermediate, but this route has been superseded by the direct oxidation of ethylene with air or oxygen. ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:VERHAAK, MICHAEL JOHANNES FRANCISCUS MARIA;REEL/FRAME:031305/0294, Free format text: SHELL OIL COMPANY, TEXAS, Free format text: The first step is done to remove the hydrocarbon gases, and the second step is employed to strip off CO2. 1) to convert any acetylene present. CO2 de-scrubber - The above potassium carbonate solution is then sent to the CO2 de-scrubber where CO2 is de-scrubbed by stepwise (usually two steps) flashing. Pure ethylene is fed into the process, which is mixed with a stream recirculation of the process. No. Ethylene Glycol (EG) Production and Manufacturing Process. %, using air as a source of oxygen (oxidizing agent), using ethane as ballast gas, and using ethyl chloride (EC) as moderator. Lummus Novolent Gmbh/Lummus Technology Inc. U.S. Appl. Here, ethylene oxide is obtained as the overhead product, whereas the bottom product obtained is known as the ‘glycol bleed’. %, 5 wt. 1, stream 1 comprising a feed containing ethane is fed to ethylene production unit 2. The oxidizing agent may be high-purity oxygen or air, but is preferably high-purity oxygen which may have a purity greater than 90%, preferably greater than 95%, more preferably greater than 99%, and most preferably greater than 99.9%. In the latter embodiment, ethane from the stream comprising ethylene oxide, unconverted ethylene and ethane is recycled to the step of producing ethylene and to the step of producing ethylene oxide. 0000000734 00000 n �:{^�Z�6��F��d�w�O������$$nE�G�z�$�Z�� eUԚEI�D;�՝�,�\��[[y��fWS��PMm��_����bGCY ��,�,H�_/��E�U�TY.rx.8���MkH�I�?�Y�*�[�pG���$����g�5�E��fi�Ny���n.��Z[7[�r�Ü��Ƅ+�@4k���- e)��3�L�VN��@��S��X�����?_�#n`���>�����#"{+�*�;g�Xx���/�� ���� Process for the manufacture of 1,2-dichloroethane. 2] Direct oxidation of Ethylene by Peroxy Acids. It is produced by the direct oxidation of ethylene with high-purity oxygen or air. Further, preferably, said separated stream comprising unconverted ethylene and unconverted ethane is further separated into a stream comprising unconverted ethylene which is recycled to the step of producing ethylene oxide and a stream comprising unconverted ethane which is recycled to the step of producing ethylene. Further, it is known to produce ethylene by oxidative dehydrogenation (oxydehydrogenation; ODH) of ethane. %, suitably of from 20 to 80 wt. Historical, current and forecast prices, together with commentaries, to help you track price fluctuation and understand price drivers and trends. The minimum amount of moderator in the reaction mixture may be 0.1 ppmv, 0.2 ppmv, 0.5 ppmv, 1 ppmv, 2 ppmv, 5 ppmv, 10 ppmv or 50 ppmv. The ethylene oxidation step in the present process results in a stream comprising ethylene oxide, unconverted ethylene and ethane. %, 50 wt. Preferably, the catalyst is a pelletized catalyst, for example in the form of a fixed catalyst bed, or a powdered catalyst, for example in the form of a fluidized catalyst bed. In the latter embodiment, ethane from the stream comprising ethylene oxide, unconverted ethylene and ethane is recycled to the step of producing ethylene. %, 95 wt. In the ethylene oxide production step of the present process, ethylene oxide is produced by subjecting ethylene and ethane from the stream comprising ethylene and ethane, originating from the ethylene production step, to oxidation conditions resulting in a stream comprising ethylene oxide, unconverted ethylene and ethane. straight to glycol manufacture or purified by fractionation 1, the only difference being that in the flow scheme of FIG. The nature of the ethane oxydehydrogenation catalyst is not essential in terms of obtaining the advantages of the present invention as described herein. Such recycle has both said advantages in that conversion of unconverted ethylene into ethylene oxide is effected as yet, whereas re-use of ethane as a ballast gas is also effected at the same time. chlorohydrin process for the production of ethylene oxide was inefficient, because most of the chlorine that was used was lost as calcium chloride. In addition, when using ethane as ballast gas, the selectivity of the ethylene oxidation reaction to EO is high. Water may easily be separated from said product stream, for example by cooling down the product stream from the reaction temperature to a lower temperature, for example room temperature, so that the water condenses and can then be separated from the product stream. Stream 6 comprising ethylene oxide, unconverted ethylene, ethane and carbon dioxide is sent to ethylene oxide separation unit 7. %, 30 wt. % of ethane, respectively, all said amounts based on the total amount of the stream or the streams comprising ethylene and/or ethane as fed to said ethylene oxide production step. Ethylene oxide can readily react with divergent compounds with the opening of the ring. Ethylene glycol used to be manufactured by the hydrolysis of ethylene oxide (EO) which was produced via ethylene chlorohydrin but this method has been superseded by a direct oxidation route. This embodiment has the advantage that more ethylene may be produced by recycling unconverted ethane whereas ethane that is still not converted after such recycle will then automatically be re-used as a ballast gas in the ethylene oxidation step. In case a silver containing catalyst is used in the ethylene oxide production step of the present process, the silver in the silver containing catalyst is preferably in the form of silver oxide. Substream 9 b is fed to carbon dioxide removal unit 10. That is to say, either part or all ethane is recycled in such way. Processing & Handling. Further, it is preferred that in the ethylene oxide production step of the present process, the ethylene and ethane are contacted with a catalyst, preferably a silver containing catalyst. % EO in the product stream corresponded to a work rate of 195 kg of product per cubic meter of catalyst bed per hour (kg/m3/hr). 2 shows a further schematic representation of an embodiment of the process according to the invention. GB1314613 discloses the use of an inhibitor (that is to say, a moderator), selected from ethylene dichloride, vinyl chloride, dichlorobenzene, monochlorobenzene, dichloromethane, and chlorinated phenyls, chlorinated biphenyls and chlorinated polyphenyls, in the production of ethylene oxide from ethylene. %. The production of ethylene oxide on a commercial scale is attained with the combination of the following unit processes: Main reactor - The main reactor consists of thousands of catalyst tubes in bundles. In the flow scheme of FIG. Accordingly, the present invention relates to a process for the production of ethylene oxide, comprising the steps of: producing ethylene resulting in a stream comprising ethylene and ethane; producing ethylene oxide by subjecting ethylene and ethane from the stream comprising ethylene and ethane to oxidation conditions resulting in a stream comprising ethylene oxide, unconverted ethylene and ethane; and. Further, in such cases wherein ethylene is produced from a feed containing ethane in the ethylene production step of the present process, ethane from the stream comprising ethylene oxide, unconverted ethylene and ethane resulting from the step of producing ethylene oxide may also be recycled to both the ethylene production step and the ethylene oxide production step. FIG. In this embodiment, preferably, a stream comprising unconverted ethylene and ethane is separated from the stream comprising ethylene oxide, unconverted ethylene and ethane resulting from the step of producing ethylene oxide, and is then recycled to the step of producing ethylene oxide. ethylene production are discussed below. 1 and 2). Акционерное общество "Нижнекамскнефтехим", ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:REKERS, DOMINICUS MARIA;SMAARDIJK, ABRAHAM ADRIAAN;REEL/FRAME:020830/0759;SIGNING DATES FROM 20080208 TO 20080212, ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:REKERS, DOMINICUS MARIA;SMAARDIJK, ABRAHAM ADRIAAN;SIGNING DATES FROM 20080208 TO 20080212;REEL/FRAME:020830/0759, PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY, Process for the preparation of alkylene glycol, Process for the preparation of an alkylene carbonate and an alkylene glycol, Method for producing an alkylene carbonate and / or an alkylene glycol, For preparation method and the integrated system of lower olefin product, For the preparation of the method for lower olefins product, process for the production of aromatic hydrocarbons and ethylene, use of hydrogen, and integrated system for the production of olefins, Process for the production of ethylene oxide, System and Process For Removal Of Organic Carboxylates From Mono Ethylene Glycol (MEG) Water Streams By Acidification and Vaporization Under Vacuum, A kind of device and method for producing refined ethylene oxide, A kind of method and system separating and recovering ethylene top gas, Recovery of ethylene oxide from sterilization process, Method for improving the manufacture of ethylene glycol, Process for the manufacture of extremely pure monoethylene glycol, Method to eliminate formic acid and acetic acid from process water in ethylene glycol plant, Method for production of high-purity monoethylene glycol, Process for converting toluene to benzene and xylene, Process for the recovery of ethylene oxide, Carbon dioxide recovery from an oxygen containing mixture, Process for recovering halogen promoters and removing permanganate reducing compounds, Process for the removal of carbon dioxide from 3,4-epoxy-1-butene process recycle streams, Method for distillation of (meth) acrylic acid and / or its ester, Processes and systems for purification of boron trichloride, Process for the purification of olefinically unsaturated nitriles, Method and system for removing vinyl iodide impurities from a recycle gas stream during the production of ethylene oxide, Process for the manufacture of beta-methylthiopropionaldehyde, Process for recovering acrolein or propionaldehyde from dilute aqueous stream, Utilization of acetic acid reaction heat in other, Process for purifying dinitrogen monoxide. % of ethane, the balance comprising nitrogen originating from the air that was used as the source of oxygen and from the blend containing EC that was used as the moderator. After ethylene oxide is separated from said stream comprising ethylene oxide, unconverted ethylene and ethane and before such recycle of the remaining unconverted ethylene and ethane, any carbon dioxide is removed. Print been superseded by the direct oxidation of ethylene with air The cooling system of the reactor can be used to maintain this temperature. The catalyst temperature to achieve said target work rate was 244° C. Results of the experiment are shown in Table 1 below. {�����N�3�蟤�'�";���|���Ky4�~, c���C7tLǶ�kz�T8@Ĵp���͢ˮT�fy�|6�S�ֺ����B�w�X*1�����%Z�M��.߶/�E���u�p`�l�U��A��k�����y6��&�#�#��҆. %, 5 wt. Moderators that can be suitably used in the ethylene oxide production step of the present process are also disclosed in above-mentioned GB1314613, the disclosure of which is herein incorporated by reference. Still further, stream 3 may be subjected to hydrotreatment in a hydrotreater unit before entering ethylene oxide production unit 5 (said hydrotreater unit not shown in FIG. 0000000016 00000 n %, 80 wt. Surprisingly, it was found that the above drawbacks are avoided by means of an integrated process wherein ethylene is produced resulting in a stream comprising ethylene and ethane, wherein ethylene and ethane from the latter stream are subjected to oxidation conditions resulting in the desired ethylene oxide. Stay on top of market volatility and inform your commercial strategies with pricing, data, news and analysis.

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