Patent application number | Description | Published |
20100116130 | METHOD OF MAKING A HIGH-PERFORMANCE SUPPORTED GAS SEPARATION MOLECULAR SIEVE MEMBRANE USING A SHORTENED CRYSTALLIZATION TIME - A method of making a supported gas separation molecular sieve membrane. In this method a porous support, which is preferably pretreated, is contacted with a molecular sieve synthesis mixture under hydrothermal synthesis conditions. The contacting step is conducted for a shortened crystallization time period. The resulting coated porous support is calcined to yield the supported gas separation molecular sieve membrane having particularly good gas separation characteristics. | 05-13-2010 |
20110100211 | METHOD FOR PRODUCING CARBON MOLECULAR SIEVE MEMBRANES IN CONTROLLED ATMOSPHERES - The invention concerns carbon molecular sieve membranes (“CMS membranes”), and more particularly the use of such membranes in gas separation. In particular, the present disclosure concerns an advantageous method for producing CMS membranes with desired selectivity and permeability properties. By controlling and selecting the oxygen concentration in the pyrolysis atmosphere used to produce CMS membranes, membrane selectivity and permeability can be adjusted. Additionally, oxygen concentration can be used in conjunction with pyrolysis temperature to further produce tuned or optimized CMS membranes. | 05-05-2011 |
20110113958 | METHOD OF MAKING A HIGH-PERFORMANCE SUPPORTED GAS SEPARATION MOLECULAR SIEVE MEMBRANE USING A SHORTENED CRYSTALLIZATION TIME - A method of making a supported gas separation molecular sieve membrane. In this method a porous support, which is preferably pretreated, is contacted with a molecular sieve synthesis mixture under hydrothermal synthesis conditions. The contacting step is conducted for a shortened crystallization time period. The resulting coated porous support is calcined to yield the supported gas separation molecular sieve membrane having particularly good gas separation characteristics. | 05-19-2011 |
20110144407 | PROCESS FOR PRODUCING PURIFIED HYDROCARBON HAS - Process for producing purified hydrocarbon gas from a gas stream comprising hydrocarbons and acidic contaminants, which process comprises the steps of: (a) contacting the gas stream with one or more membranes to obtain a hydrocarbon-rich retentate and a acidic contaminant-rich permeate; (b) cooling the hydrocarbon-rich retentate in a cooling stage to form a mixture comprising solid and/or liquid acidic contaminants and a vapour comprising vaporous hydrocarbons; (c) separating solid and/or liquid acidic contaminants from the mixture, yielding the purified hydrocarbon gas. | 06-16-2011 |
20120060687 | METHOD OF MAKING A GAS SEPARATION MOLECULAR SIEVE MEMBRANE - A method of preparing a supported gas separation membrane, comprising: preparing crystalline seeds from a synthesis mixture comprising an aluminum source, a phosphorous source, a silicon source, at least one organic templating agent and water; applying the seeds to a porous support to produce a seeded porous support; contacting the seeded porous support with a synthesis gel under hydrothermal synthesis conditions to produce a coated porous support; and calcining the coated porous support is described. A supported gas separation membrane made by this method is also described. | 03-15-2012 |
20120065450 | PROCESS THAT UTILIZES COMBINED DISTILLATION AND MEMBRANE SEPARATION IN THE SEPARATION OF AN ACIDIC CONTAMINANT FROM A LIGHT HYDROCARBON GAS STREAM - Disclosed is a process for separating an acidic contaminant and light hydrocarbon of a light hydrocarbon feed having a large contaminating acidic contaminant content. Among other features, the process uses a combination of distillation and membrane separation arranged in a unique way to yield a high-purity light hydrocarbon product and a high-purity acidic contaminant product. | 03-15-2012 |
20130000484 | METHOD OF SEPARATING GAS MIXTURES - A method of separating a first gas component from a feed gas mixture comprising the first gas component and a second gas component using a SAPO-34 molecular sieve membrane. Periodically removing unwanted components that are absorbed on the membrane may be accomplished by passing a regeneration gas stream through the membrane. | 01-03-2013 |
20130008312 | METHOD OF MAKING SAPO-34 MEMBRANES FOR USE IN GAS SEPARATIONS - A method of making a crystalline silicoaluminophosphate-34 (SAPO-34) membrane. The method comprises the steps of providing a porous support having a pore size distribution such that a small proportion of its pores are larger than 10 microns, seeding the porous support with SAPO-34 seed crystals by capillary suspension infiltration to give a seeded support, and growing a SAPO-34 membrane layer on the surface of the seeded support. | 01-10-2013 |
20130152793 | Stabilization of Porous Morphologies for High Performance Carbon Molecular Sieve Hollow Fiber Membranes - Carbon molecular sieves (CMS) membranes having improved thermal and/or mechanical properties are disclosed herein. In one embodiment, a carbon molecular sieve membrane for separating a first and one or more second gases from a feed mixture of the first gas and one or more second gases comprises a hollow filamentary carbon core and a thermally stabilized polymer precursor disposed on at least an outer portion of the core. In some embodiments, the thermally stabilized polymer precursor is created by the process of placing in a reaction vessel the carbon molecular sieve membrane comprising an unmodified aromatic imide polymer, filling the reaction vessel with a modifying agent, and changing the temperature of the reaction vessel at a temperature ramp up rate and ramp down rate for a period of time so that the modifying agent alters the unmodified aromatic imide polymer to form a thermally stabilized polymer precursor. | 06-20-2013 |
20130280430 | GAS SEPARATION MEMBRANE AND METHOD OF MANUFACTURE AND USE - A method including contacting a support with a composition including an aluminum, silicon, phosphorous (SAPO) gel and/or an aluminophosphate (AlPO) gel; heating the support and the composition; and forming SAPO and/or AlPO crystals from the composition on the support; and after forming the crystals, modifying the contact between the support and the composition within a time to inhibit solubilization of a portion of the crystals. A method including seeding a support with an amount of uncalcined silicoaluminophosphate (SAPO) and/or aluminophosphate (AlPO) molecular sieve crystals; after seeding the support, contacting the support with a composition including a SAPO or AlPO gel; and heating the support and the composition to form SAPO and/or AlPO molecular sieve crystals from the gel on the support. | 10-24-2013 |
20130305921 | METHOD FOR PRODUCING CARBON MOLECULAR SIEVE MEMBRANES IN CONTROLLED ATMOSPHERES - The invention concerns carbon molecular sieve membranes (“CMS membranes”), and more particularly the use of such membranes in gas separation. In particular, the present disclosure concerns an advantageous method for producing CMS membranes with desired selectivity and permeability properties. By controlling and selecting the oxygen concentration in the pyrolysis atmosphere used to produce CMS membranes, membrane selectivity and permeability can be adjusted. Additionally, oxygen concentration can be used in conjunction with pyrolysis temperature to further produce tuned or optimized CMS membranes. | 11-21-2013 |
20140154410 | LARGE SURFACE SUPPORTED MOLECULAR SIEVE MEMBRANE - A method including preparing a molecular sieve material in a first chamber; transferring the molecular sieve material from the first chamber to a second chamber comprising at least one support; in the second chamber, contacting the at least one support with the molecular sieve material under conditions that promote the crystallization of molecular sieve material on the at least one support; and synthesizing crystals of molecular sieve material on the at least one support. A system including a first chamber defining a volume sufficient to accommodate a volume of molecular sieve material, an inlet and an outlet; a heating element coupled to the first chamber; and a second chamber comprising a pair of inlets and defining a volume sufficient to accommodate a support. | 06-05-2014 |