摘要:
A corner structure of a liquefied gas storage tank is provided, wherein the corner structure is installed at a corner of the storage tank for storing liquefied gas to support sealing walls. The corner structure includes: a stationary member secured to an inner surface of a hull structure wall; a movable member disposed on the stationary member such that the sealing walls are joined thereto; and an insulating member interposed between the sealing walls and the hull structure wall. The stationary member includes a stationary member body bent at a curved portion thereof in an opposite direction to the movable member, and the movable member includes a movable member body bent at a bent portion thereof in an opposite direction to the stationary member. The stationary member and the movable member are coupled to each other by a fastening member that penetrates the curved portion and the bent portion.
摘要:
A pipe inspection apparatus is provided according to one embodiment of the present invention. The pipe inspection apparatus may include a moving body part to travel in a pipe, at least one drive cup disposed on an outer surface of the moving body part and configured to allow the moving body part to travel along an inside of the pipe due to a pressure of a fluid flowing in the pipe, at least one front guide part disposed on a front portion of the drive cup and including a front wheel that brings into contact with the pipe, and at least one rear guide part disposed on a rear portion of the drive cup and including a rear wheel that brings into contact with the pipe.
摘要:
Disclosed is a corner structure of a liquefied gas storage tank, wherein the corner structure is installed at a corner of the storage tank for storing liquefied gas to support sealing walls. The corner structure includes: a stationary member secured to an inner surface of a hull structure wall; a movable member disposed on the stationary member such that the sealing walls are joined thereto; and an insulating member interposed between the sealing walls and the hull structure wall. The stationary member includes a stationary member body bent at a curved portion thereof in an opposite direction to the movable member, and the movable member includes a movable member body bent at a bent portion thereof in an opposite direction to the stationary member. The stationary member and the movable member are coupled to each other by a fastening member that penetrates the curved portion and the bent portion.
摘要:
Provided is a method of calculating a tortuous hydraulic diameter of a porous medium for laminar flow and turbulent flow considering a geometric feature and a friction loss feature. A method of calculating a tortuous hydraulic diameter of a porous medium, according to an embodiment of the present invention, includes providing porosity and a specific surface area of a porous medium, calculating a hydraulic diameter of the porous medium by using the porosity and the specific surface area, calculating tortuosity of the porous medium, and calculating a tortuous hydraulic diameter corresponding to a function of tortuosity, by using the hydraulic diameter and the tortuosity of the porous medium.
摘要:
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.
摘要:
The present invention provides an apparatus for regasifying gas hydrate pellets that includes: a cylinder; a piston coupled to an inside of the cylinder and configured to reciprocate up and down; a pellet providing part coupled to an one side of the cylinder in such a way that supply of gas hydrate pellets to the cylinder is adjusted by having one end thereof opened and closed by reciprocation of the piston; a pressure adjusting space having one end thereof coupled to a lower portion of the cylinder; a door formed in the pressure adjusting space and configured to define the pressure adjusting space; a transfer part having one end thereof coupled to the other end of the pressure adjusting space and configured to transfer the gas hydrate pellets; and a regasification part coupled to the other end of the transfer part and having heating water therein to allow regasification of the transferred gas hydrate pellets.
摘要:
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.
摘要:
Provided is a re-liquefying method for a stored liquid which has a simple structure or operation and excellent process efficiency. Since the method does not use separate refrigerant, the structure or operation in the re-liquefying method is significantly simplified. In addition, since a portion of a main stream is separated to form a cycle similar to a refrigerant cycle which cools the mainstream, the process efficiency of the re-liquefying method is significantly improved.The above Abstract is a more accurate literal translation of the abstract from the original priority application than the PCT abstract.
摘要:
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.
摘要:
According to an embodiment of the present invention, a power supply apparatus for detecting a gas leak is provided. The apparatus may include: a power supply pipe which is connected to a pump and has a power line passing therethrough, the power line supplying power from a power supply unit to a motor in the pump; a flexible joint pipe having one side connected to the power supply pipe and the other side connected to the power supply unit; a power inlet unit having one side facing the pump and the other side positioned on the power supply pipe so as to face the power supply unit to connect the power line, and preventing gas leak from one side to the other side in the pump; and a leak detection unit which fills the power supply pipe with an inert gas and detects a gas leak according to a change in pressure.