Abstract: Disclosed are a composite absorbent and a method for using same in the absorption and conversion of ethylene oxide for the coupling co-production of ethylene carbonate. The composite absorbent comprises an ionic liquid and ethylene carbonate, wherein the ionic liquid is an imidazole ionic liquid, a quaternary ammonium ionic liquid and a quaternary phosphonium ionic liquid. The composite absorbent is used for absorbing ethylene oxide and carbon dioxide, and is also used in the absorption and conversion of ethylene oxide for the coupling co-production of ethylene carbonate.

Abstract: A system and a process for co-producing dimethyl carbonate and ethylene glycol. The system comprises an interconnected ethylene carbonate preparation unit and an ethylene carbonate alcoholysis unit. The ethylene carbonate preparation unit comprises a fixed bed reactor and a light-component stripping column connected to each other. The fixed bed reactor is filled with a supported ionic liquid catalyst. The process comprises the steps of: reacting carbon dioxide and ethylene oxide as raw materials in the fixed bed reactor to produce ethylene carbonate, purifying the ethylene carbonate and then mixing it with an alcoholysis reaction catalyst, and reacting the mixture with methanol in a reactive distillation tower, producing dimethyl carbonate and ethylene glycol. The process increases the conversion rate of ethylene oxide and avoids the need for a process of separating conventional homogeneous catalysts from ethylene carbonate, thereby reducing process energy consumption and simplifying process procedures.

Abstract: A system and a process for co-producing dimethyl carbonate and ethylene glycol. The system comprises an interconnected ethylene carbonate preparation unit and an ethylene carbonate alcoholysis unit. The ethylene carbonate preparation unit comprises a fixed bed reactor and a light-component stripping column connected to each other. The fixed bed reactor is filled with a supported ionic liquid catalyst. The process comprises the steps of: reacting carbon dioxide and ethylene oxide as raw materials in the fixed bed reactor to produce ethylene carbonate, purifying the ethylene carbonate and then mixing it with an alcoholysis reaction catalyst, and reacting the mixture with methanol in a reactive distillation tower, producing dimethyl carbonate and ethylene glycol. The process increases the conversion rate of ethylene oxide and avoids the need for a process of separating conventional homogeneous catalysts from ethylene carbonate, thereby reducing process energy consumption and simplifying process procedures.

Abstract: A method of converting three dimensional image data into two dimensional image data, includes identifying at least two vertices of an object to be rendered in a frame of three dimensional image data, calculating a three-dimensional (3D) motion vector for each vertex of the object to be rendered, determining a position of each vertex in a new frame, calculating the motion vectors for a block based upon the vertex position in the new frame and the motion vectors for the vertex, and using the motion vectors for the vertex to render pixels in the new frame.