Abstract: The present invention relates to a membrane contactor assisted extraction system and method for extracting a single phase species from multi-phase working solutions. More specifically one preferred embodiment of the invention relates to a method and system for membrane contactor assisted water (MCAWE) extraction of hydrogen peroxide (H2O2) from a working solution.

Abstract: The present invention relates to a process for the production of light weight olefins comprising olefins having from 2 to 3 carbon atoms per molecule from an oxygenate feedstock. The process comprises passing the oxygenate feedstock to an oxygenate conversion zone containing a metal aluminophosphate catalyst to produce a light weight olefin stream. A propylene stream and/or mixed butylene is fractionated from said light weight olefin stream and a medium weight C4 to C7 stream is cracked in a separate olefin cracking reactor to enhance the yield of ethylene and propylene products.

Abstract: The invention relates to a conversion process for making olefin(s) using a molecular sieve catalyst composition. More specifically, the invention is directed to a process for converting a feedstock comprising an oxygenate in the presence of a molecular sieve catalyst composition, wherein the air feed to the catalyst regenerator is free of or substantially free of metal salts.

Abstract: The invention relates to a conversion process for making olefin(s) using a molecular sieve catalyst composition. More specifically, the invention is directed to a process for converting a feedstock comprising an oxygenate in the presence of a molecular sieve catalyst composition, wherein the air feed to the catalyst regenerator is free of or substantially free of metal salts. The air feed is preferably purified by passage through a rotary adsorbent contactor or adsorbent wheel.

Abstract: Improved processing for the production of light olefins is provided involving synthesis gas conversion to form an effluent including product dimethyl ether, subsequent separation of the product dimethyl ether and conversion thereof to the desired light olefins. The synthesis gas conversion effluent may also desirably include methanol and at least a portion of such methanol may be employed to effect the separation of the product dimethyl ether.

Abstract: Improved processing of an oxygenate-containing feedstock for increased production or yield of light olefins, particularly for increased relative yield of propylene is provided. Such processing involves oxygenate conversion to olefins and subsequent oxygenate conversion effluent stream treatment including isomerization of at least a portion of the 1-butenes to 2-butenes and metathesization of at least a portion of the 2-butenes to produce additional propylene.

Abstract: Improved processing for the production of light olefins via oxygenate conversion processing is provided. Synthesis gas conversion such as to produce an effluent including at least methanol can be integrated with oxygenate conversion processing such as to produce an oxygenate conversion reactor effluent including at least light olefins and dimethyl ether. At least a portion of the oxygenate conversion reactor effluent can be contacted with such produced methanol to effect recovery of dimethyl ether from the oxygenate conversion reactor effluent.

Abstract: The invention relates to a conversion process for making olefin(s) using a molecular sieve catalyst composition. More specifically, the invention is directed to a process for converting a feedstock comprising an oxygenate in the presence of a molecular sieve catalyst composition, wherein the air feed to the catalyst regenerator is free of or substantially free of metal salts. The air feed is preferably purified by passage through a rotary adsorbent contactor or adsorbent wheel.

Abstract: The average propylene cycle selectivity of an oxygenate to propylene (OTP) process using a dual-function oxygenate conversion catalyst is substantially enhanced by the use of a combination of: 1) moving bed reactor technology in the hydrocarbon synthesis portion of the OTP flow scheme in lieu of the fixed bed technology of the prior art; 2) a hydrothermally stabilized and dual-functional catalyst system comprising a molecular sieve having dual-function capability dispersed in a phosphorus-modified alumina matrix containing labile phosphorus and/or aluminum anions; and 3) a catalyst on-stream cycle time of 400 hours or less. These provisions stabilize the catalyst against hydrothermal deactivation and hold the build-up of coke deposits on the catalyst to a level which does not substantially degrade dual-function catalyst activity, oxygenate conversion and propylene selectivity, thereby enabling maintenance of average propylene cycle yield near or at essentially start-of-cycle levels.

Abstract: The invention relates to a conversion process for making olefin(s) using a molecular sieve catalyst composition. More specifically, the invention is directed to a process for converting a feedstock comprising an oxygenate in the presence of a molecular sieve catalyst composition, wherein the air feed to the catalyst regenerator is free of or substantially free of metal salts.

Abstract: A process for cracking a naphtha feedstream to light olefins is presented. The process comprises converting aromatics and naphthenes to paraffins, and separating iso- and normal paraffins using a ring opening reactor and an adsorption separation unit.

Abstract: The present invention comprises a process for producing propylene comprising the steps of contacting an olefin feed containing between about 40 and about 80 wt-% olefins and between about 20 and about 60 wt-% olefins and aromatics with a spherical catalyst to form a cracked product, the catalyst comprising about 30 to about 80 wt-% of a crystalline zeolite, the reaction conditions including a temperature from about 500° to 650° C., a hydrocarbon partial pressure of 70 to 280 kPa (10 to 40 psia), a liquid hourly space velocity in the range of 5 to 40 hr?1 and wherein propylene comprises at least 90 mol-% of the total C3 products.