摘要:
The present invention relates to a catalyst for Fischer-Tropsch synthesis which has excellent heat transfer capability. This catalyst contains (1) central core particle or particles made of a heat transfer material (HTM) selected from the group consisting of a metal, a metal oxide, a ceramic, and a mixture thereof; and (2) outer particle layer which surrounds the central core particles and is attached to the surfaces of the central core particles by a binder material layer. The outer particle layer has a support and catalyst particles in a powder form containing metal particles disposed on the support. The catalyst having such a dual particle structure shows excellent heat transfer capability and, thus, exhibits high selectivity to a target hydrocarbon. Therefore, the catalyst of the present invention is useful in a fixed-bed reactor for Fischer-Tropsch synthesis for producing hydrocarbons from synthetic gas.
摘要:
The present invention provides a (meth)acrylic acid collecting method for collecting a (meth)acrylic acid from a mixed gas that includes an organic byproduct, a steam, and a (meth)acrylic acid that are generated in a production reaction of the (meth)acrylic acid, which includes the steps of a) contacting the mixed gas that includes the organic byproduct, the steam, and the (meth)acrylic acid with a (meth)acrylic acid absorption solvent to obtain a gas that includes the organic byproduct and the steam and the (meth)acrylic acid containing solution while the gas and the (meth)acrylic acid containing solution are separated from each other; b) contacting the gas that includes the organic byproduct and the steam that are obtained in the step a with the organic byproduct absorption solvent to obtain the gas that includes the steam and the organic byproduct containing solution while the gas and the organic byproduct containing solution are separated from each other; c) supplying the gas that includes the steam that is obtained in the step b into the production reaction of the (meth)acrylic acid; and d) obtaining the (meth)acrylic acid from the (meth)acrylic acid containing solution that is obtained in the step a while the (meth)acrylic acid and the (meth)acrylic acid containing solution are separated from each other, and a (meth)acrylic acid collecting device.
摘要:
A stereoscopic display apparatus that may reduce distortion of a displayed stereoscopic image including a display unit displaying an image that is linearly polarized in one direction; a stereoscopic filter disposed in front of the display unit; and a phase correction plate disposed in front of the display unit.
摘要:
A color filter substrate for a liquid crystal display device includes a base substrate having a transmissive portion and a reflective portion. The transmissive portion has a groove, a color filter layer on the substrate, and a black matrix on the color filter layer.
摘要:
A heat exchange-type reactor includes a reaction chamber (1) having mounted therein a plurality of contact tubes (5) filled with a catalyst material; at least one shield plate (11) mounted within the reaction chamber to partition an inner space of the reaction chamber into at least two separate spaces (1d, 1e); a plurality of conduits (13, 15, 17, 19) having entrance (15a, 17a) and exit (13a, 17a) openings through which a heat transfer medium respectively enters and exits, and being mounted to an outer circumference of the reaction chamber (1) corresponding to the partitioned spaces (1d, 1e); and a heat exchange unit connected to the conduits (13, 15, 17, 19) to perform heat exchange of the heat transfer medium, in which the heat exchange unit includes a single heat exchanger that performs the exchange of heat of the heat transfer medium in accordance with the partitioned spaces.
摘要:
Disclosed is a structure for guiding the installation of a thermowell for temperature sensor, which is used to measure the axial temperature inside a fixed-bed catalyst reaction tube when it is filled with a catalyst, at a predetermined location in the reaction tube. In addition, a method for installing a thermowell for temperature sensor is provided. The method includes the steps of installing a structure for guiding the installation of a thermowell for temperature sensor in a reaction tube and fixing the thermowell for temperature sensor while filling the reaction tube with a catalyst.
摘要:
The present invention relates to a facility parts cleaning solution for the processing of (meth)acrylic acid and/or (meth)acrylic esters and a cleaning method using the cleaning solution. An aqueous cleaning composition comprising 5 to 50 wt % of at least one alkali metal hydroxide selected from the group consisting of sodium hydroxide and potassium hydroxide, 0.01 to 1 wt % of a water-soluble amino acid, 0.001 to 0.05 wt % of N,N′-methylene bisacrylamide, and 0.001 to 0.05 wt % of azobisisobutyronitrile is used to clean facility parts for manufacturing (meth)acrylic acid and/or (meth)acrylic esters in order to easily remove polymers and deposits.
摘要:
An array substrate for a transflective liquid crystal display device includes a substrate, a thin film transistor having a channel, a gate electrode, a source electrode, and a drain electrode on the substrate, a first passivation layer on the thin film transistor, wherein the first passivation layer has a first contact hole exposing the drain electrode, a reflector on the first passivation layer, wherein the reflector is over the thin film transistor and has an opening corresponding to the first contact hole, a second passivation layer on the reflector, wherein the second passivation layer has a second contact hole through the opening, and a transparent electrode on the second passivation layer, wherein the transparent electrode has a hole over the channel of the thin film transistor and contacts the drain electrode of the thin film transistor through the first and second contact holes.
摘要:
An array panel for a transflective liquid crystal display device includes a substrate; a thin film transistor on the substrate; a first passivation layer covering the thin film transistor and having a first transmissive hole and an inclined portion surrounding the first transmissive hole; a transparent electrode on the first passivation layer, the transparent electrode contacting the thin film transistor; and a reflector over the transparent electrode, the reflector completely covering the inclined portion and having a second transmissive hole corresponding to the first transmissive hole.
摘要:
The invention provides an array substrate for a transflective liquid crystal display device, including: a thin film transistor having gate, data and drain electrodes on a transparent substrate; an insulation layer over the substrate while covering the thin film transistor, the insulating layer having a drain contact hole exposing the drain electrode of the thin film transistor; a reflective electrode having a transmitting hole on the insulation layer; and a transparent electrode covering the reflective electrode entirely, wherein either the reflective electrode or the transparent electrode contacts the drain electrode via the drain contact hole of the insulation layer. The fabrication method is also disclosed. The resistance between the reflective electrode and the transparent electrode can be reduced, and the fabrication method can be simplified.