# US 2013/0158306 A1 · Device and method for manufacturing natural gas hydrate > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0158306 A1 - Document ID: US20130158306A1 - Status: Published application - Kind: A1 - Application number: 13/818,477 - Filed: 2010-08-23 - Published: 2013-06-20 - Earliest claimed: 2010-08-23 - Assignees: Daewoo Enginerring & Construction Co., Ltd. - Inventors: Myung Ho Song; Yong Seok Yoon; Hye Jung Hong; Jung Huyk Ahn; Mun Keun Ha; Seok Ku Jeon; Hoon Ahn; Ta Kwan Woo - Web page: https://patentgrep.com/patent/US20130158306A1 ## CPC - C10L 5/12: with inorganic binders - B01J 3/04: Pressure vessels, e.g. autoclaves - B01J 19/18: Stationary reactors having moving elements inside (B01J19/08, B01J19/26 take precedence) - C10L 3/107: {Limiting or prohibiting hydrate formation} - C10L 3/108: {Production of gas hydrates} - B01J 2219/00063: of the reactants - B01J 2219/00065: Pressure measurement - B01J 2219/00162: controlling the pressure - B01J 2219/00164: controlling the flow - B01J 2219/002: inside the reactor - B01J 2219/00213: Fixed parameter value - B01J 2219/00236: at the reactor outlet - B01J 2219/182: horizontal - C10L: FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS - B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS ## Abstract 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. ## Claims ### Claim 1 A device for manufacturing natural gas hydrate, comprising: an ice slurry generation unit configured to prepare ice slurry having 13-20% of ice at normal pressure; a first pipe having one end thereof connected to the ice slurry generation unit so as to allow the ice slurry to be discharged from the ice slurry generation unit and having a high-pressure pump interposed therein for increasing pressure on the ice slurry; a hydrate preparation reactor connected to the other end of the first pipe and configured to generate natural gas hydrate slurry by having the pressurized ice slurry flowed thereinto and natural gas supplied thereto and mixed with each other; a second pipe having one end thereof connected to the hydrate preparation reactor so as to allow the natural gas hydrate slurry to be discharged; and a dehydrating portion connected to the other end of the second pipe and configured to dehydrate the natural gas hydrate slurry. ### Claim 2 (depends on 1) The device of claim 1, wherein the high-pressure pump is configured to pressurize the ice slurry to 50-70 bar. ### Claim 3 (depends on 1) The device of claim 1, wherein the hydrate preparation reactor comprises: a pipe having one end thereof connected to the first pipe and being horizontally disposed; and an agitator installed inside and along the pipe. ### Claim 4 (depends on 3) The device of claim 3, further comprising a pressure sensor configured to measure a pressure inside the pipe, wherein the pressure inside the pipe is measured by the pressure sensor, and the natural gas is supplied in such a way that the pressure inside the pipe is constant. ### Claim 5 (depends on 3) The device of claim 3, further comprising a temperature sensor placed at the other end of the pipe and configured to measure a temperature of the natural gas hydrate slurry, wherein an amount of the natural gas hydrate slurry discharged through the second pipe is controlled according to the temperature measured by the temperature sensor. ### Claim 6 (depends on 5) The device of claim 5, wherein the amount of the discharged natural gas hydrate slurry is increased if the temperature measured by the temperature sensor is 4 degrees Celsius or higher, and the amount of the discharged natural gas hydrate slurry is decreased if the temperature measured by the temperature sensor is 2 degrees Celsius or lower. ### Claim 7 (depends on 1) The device of claim 1, wherein the agitator comprises an impeller or a rotor screw. ### Claim 8 (depends on 1) The device of claim 1, wherein the natural gas hydrate slurry generated by the hydrate preparation reactor has 10-15% of hydrate. ### Claim 9 (depends on 1) The device of claim 1, wherein the dehydrating portion is configured to separate the natural gas hydrate slurry into powder and water having 90% of hydrate. ### Claim 10 (depends on 9) The device of claim 9, wherein the water separated by the dehydrating portion is returned to the ice slurry generation unit. ### Claim 11 A method for manufacturing natural gas hydrate, comprising: forming ice slurry having 13-20% ice at normal pressure and storing the ice slurry in an ice slurry generation unit; pressurizing the ice slurry discharged from the ice slurry generation unit with a high-pressure pump and injecting the pressurized ice slurry into a hydrate preparation reactor through a first pipe, and injecting natural gas into the hydrate preparation reactor; generating natural gas hydrate slurry by mixing the ice slurry and the natural gas in the hydrate preparation reactor; supplying the natural gas hydrate slurry prepared by the hydrate preparation reactor to a dehydrating portion through a second pipe; and separating the natural gas hydrate slurry into natural gas hydrate powder and water in the dehydrating portion. ### Claim 12 (depends on 11) The method of claim 11, wherein the high-pressure pump is configured to pressurize the ice slurry to 50-70 bar. ### Claim 13 (depends on 11) The method of claim 11, wherein the hydrate preparation reactor comprises: a pipe having one end thereof connected to the first pipe and being horizontally disposed; and an agitator installed inside and along the pipe, wherein the natural gas hydrate slurry is prepared as the ice slurry and the natural gas pass through the pipe. ### Claim 14 (depends on 13) The method of claim 13, wherein the hydrate preparation reactor further comprises a pressure sensor configured to measure a pressure inside the pipe, and wherein the pressure inside the pipe is measured by the pressure sensor, and the natural gas is supplied in such a way that the pressure inside the pipe is constant. ### Claim 15 (depends on 13) The method of claim 13, wherein the hydrate preparation reactor further comprises a temperature sensor placed at the other end of the pipe and configured to measure a temperature of the natural gas hydrate slurry, and wherein an amount of the natural gas hydrate slurry discharged through the second pipe is controlled according to the temperature measured by the temperature sensor. ### Claim 16 (depends on 15) The method of claim 15, wherein the amount of the discharged natural gas hydrate slurry is increased if the temperature measured by the temperature sensor is 4 degrees Celsius or higher, and the amount of the discharged natural gas hydrate slurry is decreased if the temperature measured by the temperature sensor is 2 degrees Celsius or lower. ### Claim 17 (depends on 11) The method of claim 11, wherein the natural gas hydrate slurry generated by the hydrate preparation reactor has 10-15% of hydrate. ### Claim 18 (depends on 11) The method of claim 11, wherein the dehydrating portion is configured to separate the natural gas hydrate slurry into powder and water having 90% of hydrate. ### Claim 19 (depends on 18) The method of claim 18, wherein the water separated by the dehydrating portion is returned to the ice slurry generation unit.