Korea Research Institute of Chemical Technology

Sk Innovation Co., Ltd.

Hyundai Heavy Industries Co., Ltd.

Korea Gas Corporation

Daelim Industrial Co., Ltd.

Hyundai Engineering Co. Ltd.

Korea National Oil Corporation

Uniplatek Co., Ltd.

Suk-Hwan Kang

Ki Won Jun

Jong Wook Bae

Ki-Won Jun

Yun-Jo Lee

Jong-Wook Bae

Seok-Lyong Song

Keh-Sik Min

Seung-Moon Kim

Mun-Han Kim

Sam-Heon Jeong

Kwang Jae Woo

Hyo Jean Kim

The present invention relates to a continuous separation and discharge apparatus and method of solid catalysts and liquid products for Fischer-Tropsch synthesis reactions, and more particularly, to a continuous separation and discharge apparatus and method of solid catalysts and products for Fischer-Tropsch synthesis reactions involving the conversion of synthetic gas into synthetic oil, by which products of the Fischer-Tropsch synthesis including wax, as a long-chain hydrocarbon, can be stably obtained by continuously separating the products from a slurry comprising solid catalyst particles and the products using periodic pulses of a feeding gas and discharging the products through a lower portion of a reactor. Provided is a continuous separation and discharge apparatus of solid catalysts and products for Fischer-Tropsch synthesis reactions including: a level sensing device which is installed at an upper portion of a reactor and detects the slurry-level of reactants; a solid catalyst/product separation device and a discharge device which are installed at a lower portion of the reactor and separate and discharge liquid products from a mixed slurry in the reactor; and a control unit which receives a signal from the level sensing device to open and close the discharge device, wherein the separation device filters the solid catalysts, and the discharge device continuously discharges the products separated from the solid catalysts through the lower portion of the reactor by the amount of the synthesized products measured by a level sensing device.

Method and apparatus for the continuous separation and discharge of solid catalysts and products for Fischer-Tropsch synthesis reactions

Disclosed are a method for manufacturing a positive temperature coefficient (PTC) device and a system for preventing overheating of a planar heater using the same. The manufacturing of the positive temperature coefficient (PTC) device is performed by mixing one or more polymer resins selected from ethylene butyl acrylate copolymers, ethylene vinyl acetate copolymers and polyethylene oxide, carbon black and an additive to prepare a compounding composition, adhering an electrode to both surfaces of the compounding composition, compressing the resulting electrode structure into a sheet, and irradiating electron beams to the sheet to perform cross-linking. Also, disclosed is a planar heater overheating prevention sensor cable obtained by connecting a plurality of PTC devices in series and adhering the devices to the surface of a planar heater by a predetermined distance. The PTC overheating prevention sensor cable is bent in one direction and adhered to a region in which a planar heater is arranged, thus having a structure in which the PTC devices are randomly dispersed in the form of a dot. The system for preventing overheating of a planar heater controls electric current transfer of the planar heater, when overheating occurs in or around the region in which PCT devices are adhered due to abnormal operation and thus prevents the overheating, thereby exhibiting improved safety, high installment and construction efficiency, decreased energy loss and superior durability.

Method for manufacturing PTC device and system for preventing overheating of planar heaters using the same

Disclosed are a catalyst for synthesis of methanol from synthesis gas and a method for preparing the same. The catalyst includes a Cu&#x2014;Zn&#x2014;Al oxide containing CuO, ZnO and AlOin a predetermined ratio or Cu&#x2014;Zn&#x2014;Al&#x2014;Zr oxide containing CuO, ZnO, AlOand ZrOin a predetermined ratio, in combination with a cerium-zirconium oxide obtained by a sol-gel process. As compared to the existing Cu&#x2014;Zn&#x2014;Al catalysts for synthesizing methanol, the catalyst disclosed herein inhibits formation of byproducts and improves yield of methanol. Therefore, it is possible to improve methanol purification efficiency and carbon conversion efficiency.

Catalyst for synthesizing methanol from synthesis gas and preparation method thereof

Growing community of inventors

Daejeon, South Korea

Suk-Hwan Kang