A method for separating undesired components from gas mixtures comprises the following steps of providing a gas mixture containing at least two gaseous components, wherein one component is an undesired component, feeding water to the gas mixture, forming a hydrate of the undesired component and a remaining gas mixture, wherein the hydrate is formed by spraying a combination comprising the water and the gas mixture, and separating the hydrate from the remaining gas mixture.

The present invention provides an apparatus for molding gas hydrate pellets that includes: a pulverizer in which dehydrated gas hydrates are pulverized; a cooler having a rotating shaft provided therein, comprising a plurality of agitation blades installed along a height direction of the rotating shaft and configured to cool the gas hydrates to a predetermined temperature; a decompressor configured to decompress the cooled gas hydrates to a predetermined pressure; and a pellet molder configured to mold the decompressed gas hydrates to pellets.

Disclosed is a marine vessel to transport natural gas hydrates (NGH), the marine vessel includes a hull formed from solid NGH and a skeletal structure to support the hull. Additionally disclosed is a container to transport NGH including a block of solid NGH and a skeletal structure to support the block. Further disclosed is a method of fabricating a marine vessel for transporting and storing natural gas hydrates (NGH), the method includes preparing a mold, placing a skin layer in the mold, assembling a skeletal structure in the mold, preparing a NGH slurry, and pouring into NGH slurry into the mold.

A system for flue-gas hydrate-based desalination using LNG cold energy belongs to the field of hydrate technology application. The CO.sub.2 in the flue-gas is captured based on the hydrate formation. Two stage formation chambers are set to improve the hydrate formation. The two steps to purify the hydrates respectively are the gas separation and the liquid separation. The two methods of hydrate dissociation to realize the recycling of the waste heat of flue-gas and the CO.sub.2 are the heat-exchanged and the exhausted. The present invention realizes the integrated CO.sub.2 capture and seawater desalination with a proper structure and a subtle system and solves the cold energy source for hydrate-based desalination by means of using LNG cold energy. The two stage formation chambers solve the capture of CO.sub.2 in the flue-gas and guarantee the hydrate formation amounts. The two types of dissociation chambers decrease the heat emission by using the waste heat of flue-gas and realize the recycling and storage of CO.sub.2. The system will not be affected by the changes of seasons and environments and has a strong carrying capacity for the flue-gas source change. It is a system with great application value realistic.

Disclosed are a device and a method for manufacturing a natural gas hydrate. Provided is the device for manufacturing a natural gas hydrate comprising: an ice slurry generation unit for preparing ice slurry having 13-20% of ice at normal pressure; a first pipe, having one end connected to the ice slurry generation unit for withdrawing the ice slurry from the ice slurry generation unit, and in which a high-pressure pump for increasing pressure on the ice slurry is interposed; a hydrate preparation reactor, which is connected to the other end of the first pipe so as to receive the pressurized ice slurry, and to which natural gas is supplied and mixed, for generating natural gas hydrate slurry; a second pipe, having one end connected to the hydrate preparation reactor, for withdrawing the natural gas hydrate slurry; and a dehydrating portion, which is connected to the other end of the second pipe, for dehydrating the natural gas hydrate slurry.

The present disclosure provides an experimental loop system for fluidization exploitation of solid-state marine gas hydrate, comprising: four modules, namely a gas hydrate sample large-amount and rapid preparation module, a gas hydrate multi-scale smashing and slurry fidelity transfer module, a gas hydrate slurry pipeline conveying characteristic experiment module, and a data collection and monitoring and safety control module. The gas hydrate experimental loop device provided by the present disclosure may be used for researching the synthesis, decomposition, gas storage rate and phase equilibrium of gas hydrate, and researching the pipeline conveying flow resistance and heat transfer characteristics, and is significant for solving the blockage problem in the gas pipeline conveying process, storage and conveying of the gas hydrate, solid-state fluidization exploitation of the marine gas hydrate and pipeline conveying experimental simulation thereof.

A nitrogen-carbon dioxide mixed gas jet apparatus for a horizontal well and an exploitation method is presented. The jet apparatus includes: an offshore platform, a natural gas processing unit, and a pressurizing unit, wherein a portion of the gas exploitation pipe in the hydrate layer is provided with a gas injection horizontal well; a mixed gas jet unit and a nozzle assembly are disposed in the gas injection horizontal well; the mixed gas jet unit is configured to mix nitrogen and carbon dioxide, and then inject the mixed gas into a hydrate deposition layer through the nozzle assembly, so that the mixed gas replaces methane gas in the hydrate deposition layer; the portion of the gas exploitation pipe in the hydrate layer is provided with a gas exploitation horizontal well configured to collect the methane gas and convey the methane gas to the natural gas processing unit.

Gas hydrate slurry formation systems are provided. The gas hydrate slurry formation system includes a cavitation chamber configured to receive a fluid and a cavitation device placed within the cavitation chamber. The cavitation device is configured to form a plurality of bubbles within the fluid in the cavitation chamber. The gas hydrate slurry formation system also includes a gas inlet configured to introduce a gas within the cavitation chamber such that the gas is entrained in the plurality of bubbles to form a plurality of gas-entrained bubbles. The plurality of gas-entrained bubbles implode within the cavitation chamber to form a gas hydrate slurry.

The present invention relates to an apparatus comprising a reactor body to which gas and water are supplied to create a gas hydrate; an upper cover which is engaged to an upper portion of the reactor body, a scraper mounted rotationally within the reactor body, and a motor for providing a driving force to the scraper. It is possible to remove gas hydrate particles attached to at least one of an inner surface of the reactor body and an inner surface of the upper cover, by a rotary driving of the scraper. According to the invention, it is possible to prevent a material hindering a heat transfer by attaching on a wall surface of the reactor, through a process of scraping out gas hydrate particles, when the scraper which is rotationally driven about a center axis of the reactor is close to the inner surface of the reactor.

A device for simulating exploitation of a natural gas hydrate in a permeable boundary layer includes a high pressure reaction kettle, a formation simulation unit and an aquifer maintaining unit. A water bath jacket externally connected with constant temperature water bath is arranged on the outer wall of the high pressure reaction kettle for providing a necessary temperature condition for the high pressure reaction kettle. A simulative well at the center of the top of the high pressure reaction kettle is connected with liquid injection, gas injection, gas production and water production equipment. An aquifer interface at the bottom of the high pressure reaction kettle is connected to the aquifer maintaining unit through a pipeline. The simulation device simulates the geological environment of a hydrate reservoir, allowing comprehensive evaluation of hydrate exploitation under different formation permeability and different formation pressure gradients.