Abstract:
A process for purification of a carbon dioxide feedstock that includes carbon dioxide and gaseous and liquid C1+ hydrocarbons. Specifically, a carbon dioxide feedstream is passed through one or more separation unit, each separation unit removing one or more C1+ hydrocarbon from the carbon dioxide feedstream to provide a richer carbon dioxide gas stream. The one or more separation unit employs an adsorption media and has an adsorption step and a media regeneration step.
Abstract:
The present invention relates to a method of separating and recovering NGLs from a natural gas feedstream. Specifically, the present method allows for the separation of ethane and heavier hydrocarbons and/or propane and heavier hydrocarbons from a raw natural gas feedstream to provide pipeline quality natural gas. One embodiment of this method provides for the use of a regenerable adsorbent media which is regenerated by a microwave heating system. Said regeneration step may be operated as a batch process, a semi-continuous process, or a continuous process.
Abstract:
Prepare a polymer foam by expanding a foamable polymer composition of a copolymer component and a blowing agent where the copolymer component accounts for more than 50 weight-percent of the total polymer weight in the foamable polymer composition and is one or more than one styrene-carboxylic acid copolymer having an acid number of 20 or higher while the blowing agent comprises a fluorinated blowing agent, less than 70 weight-percent of which is 1,1,2,2-tetrafluoroethane and less than five weight-percent is carbon dioxide and C3-C5 hydrocarbons make up less than 30 mole-percent of the blowing agent; expand the foamable polymer composition into a polymer foam having an average cell size of less than 0.5 millimeters where the copolymer composition is a continuous phase in the polymer foam.
Abstract:
A composition comprising a mesoporous silica having grafted therewith an ionic liquid to form a mesoporous silica composition offers desirable levels of functionality, sorption, specific surface functionalization, and selectivity for polar gas/non-polar gas and olefin/paraffin separations. One particular embodiment employs silylated 3,3′-(2,2-bis(hydroxymethyl)propane-1,3-diyl)bis(1-methyl-1H-imidazol-3-ium)bis-((trifluoromethyl-sulfonyl)amide as the ionic liquid. The mesoporous silica composition may be configured as, for example, a membrane.
Abstract:
The present invention relates to coatings for articles comprising a non-zeolitic silica mesoporous structure. The coatings of the present invention have shown an ability to effectively reduce odors.
Abstract:
An aqueous solvent composition (or separation fluid composition) including an aqueous mixture of (a) a solvent and (b) water for swelling, degrading, and/or fully dissolving adhesives; wherein the molecular weight of the solvent in the aqueous mixture is less than 1,000 g/mol; wherein the Hansen Solubility parameters of the solvent are in the following ranges: (i) a dispersive component from 15 MPa1/2 to 21 MPa1/2; (ii) a polar component from 3 MPa1/2 to 10.5 MPa1/2; and (iii) a hydrogen bonding component from 2 MPa1/2 to 18 MPa1/2; wherein the solvent contains at least one aromatic group; wherein the solvent contains at least one hetero-atom; and wherein the adhesive at least swells to more than 50% by weight when soaked in the aqueous mixture; a process for treating an adhesive to swell, degrade, and/or fully dissolve the adhesive using the above aqueous mixture; a process for delaminating a multilayer packaging, a multilayer film or a multilayer article containing an adhesive using the above aqueous mixture; a process for recycling a multilayer packaging, a multilayer film or a multilayer article containing an adhesive using the above aqueous mixture; and a recycled packaging, film or article prepared by the above recycling process.
Abstract:
A composition for odor control includes (A) from 85 wt % to 99.5 wt % of an olefin-based compound and (B) from 15 wt % to 0.5 wt % of an odor suppressant. The odor suppressant includes a blend of (i) an ionomer, (ii) particles of zinc oxide, and (iii) particles of copper oxide. The composition has a methyl mercaptan odor suppression value of greater than 45% as measured in accordance with ASTM D5504-12.
Abstract:
A method for separating N2 from a hydrocarbon gas mixture containing N2 comprising the steps of: i) providing a bed of adsorbent selective for N2; (ii) passing the hydrocarbon gas mixture through the bed of adsorbent to at least partially remove N2 from the gas mixture to produce: (a) N2-loaded adsorbent and (b) N2-depleted hydrocarbon gas mixture; iii) recovering the N2-depleted hydrocarbon gas mixture; iv) regenerating the N2-loaded adsorbent by at least partially removing N2 from the adsorbent; and v) sequentially repeating steps (ii) and (iii) using regenerated adsorbent from step (iv); wherein the adsorbent comprises a pyrolized sulfonated macroporous ion exchange resin.
Abstract:
The inventions is directed to a method for recovering support materials used in an additive manufacturing process. The method comprises exposing a precursor additive manufactured article comprised of a water soluble support polymer and an insoluble material to water. The water soluble support polymer is dissolved in the water. The remaining article is then removed from the water. The dissolved water soluble polymer is precipitated from the water. The precipitated polymer is separated from the water and any remaining water removed to recover the water soluble support polymer. The recovered water soluble support polymer may then be re-used to make further additive manufactured articles.
Abstract:
The present invention is directed to a microbial fuel cell comprising: A) an anode containing one or more conductive materials which is arranged to provide flow paths for electrons through the conductive material and to form flow paths for fluid material through passages formed in the conductive material, B) electrogenic microbes in electrical contact with the anode, C) biodegradable material disposed in a fluid, D) a cathode containing one or more conductive materials adapted such that the cathode can be contacted with an oxygen containing gas, E) an anion exchange membrane disposed between the anode and the cathode; and, F) a conduit for electrons which forms a circuit in contact with both the anode and the cathode.