Lee J.,Korea Gas Corporation
Energy and Fuels | Year: 2010
This study presents the experimental apparatus to analyze the dissociating phenomena of gas hydrate in porous rock. The experiments by brine injection scheme have been carried out in a way that can allow for the analysis of dissociation characteristics and how various brine concentrations and permeabilities affect the gas productivity. With the experiments, the pressure and flow behavior have been investigated during the dissociation period, as well as the productivity of dissociated gas from gas hydrate. As a result, it has been observed that, if the brine concentration is excessively high, the gas production rate tends to reduce significantly. This means that excessive NaCl molecules disturb the fluid flow between pores and, thus, significantly reduce the permeability. In the experiment with varying permeability, an increase in the permeability caused an increase in the gas production and a decrease in the dissociation rate. A difference in the production rate was also observed up to 35%. Therefore, it is experimentally verified that the permeability of the rock, which describes the connectivity of pores, is one of the most important factors that influence production from gas hydrates. It suggests that, during gas production from a gas hydrate reservoir, the dissociation methods must be conducive to increase or at least maintain the reservoir permeability. © 2009 American Chemical Society. Source
Korea Research Institute of Chemical Technology, Korea Gas Corporation, Daelim Industrial Co., Korea National Oil Corporation, Hyundai Engineering and Sk Innovation Co. | Date: 2013-11-01
The present invention relates to a process of preparing of a phosphorus-containing phosphorus-alumina support by a sol-gel method and a cobalt/phosphorus-alumina catalyst where cobalt is supported onto the phosphorus-alumina support as an active ingredient. The phosphorus-alumina support is prepared by a sol-gel method and has wide specific surface area with bimodal pore size distribution and high cobalt dispersion, thereby enabling to increase heat and mass transfer, stabilize the structure by modifying the surface property of alumina and decrease the deactivation rate due to the reduced oxidation of cobalt component during the F-T reaction. When Fischer-Tropsch reaction (F-T) is conducted on the catalyst, the catalyst maintains a superior thermal stability, inhibits the deactivation due to water generation during the F-T reaction and also causes relatively high conversion of carbon monoxide and stable selectivity of liquid hydrocarbons.
Korea Gas Corporation | Date: 2013-11-28
A natural gas supply station according to the present invention includes an installation structure on which an LNG tank container is installed and a gas vaporizer that receives a liquefied natural gas from the LNG tank container to vaporize the liquefied natural gas. Here, the installation structure includes a moving part reciprocatively moving in a direction in which the LNG tank container is unloaded from a transport unit, and the moving part is separably fixed to the LNG tank container to move the LNG tank container loaded on the transport unit to the installation structure or the LNG tank container loaded on the installation structure to the transport unit.
Korea Gas Corporation | Date: 2012-05-21
Disclosed herein is a gas separation membrane for a DEM production process, including: a porous support having a carbon dioxide permeability of more than 300 GPU (GPU=110
Dongguk University, Dongshin Hydraulics Co., Korea Gas Corporation, Sungilturbine Co., Daewoo Engineering & Construction Co. and Stx Offshore & Shipbulding Co. | Date: 2013-06-27
The present invention provides an apparatus for storing gas hydrate pellets that includes: a storage tank having an inlet formed at a top portion thereof for having gas hydrate pellets injected therein; a transfer part formed at a lower portion of the storage tank so as to transfer the injected gas hydrate pellets to an outside of the storage tank; a rotating shaft vertically formed in the storage tank; a plurality of division plates coupled to the rotating shaft to partition an internal space of the storage tank, each having a bottom portion thereof formed above a top portion of the transfer part; an extension plate coupled to a lower portion of each of the division plates in such a way that the extension plate is movable up and down; and a guide formed at an upper portion of the transfer part and configured to guide the extension plate so as to allow the extension plate to be revolved by rotation of the rotating shaft without an interruption with the transfer part.