Method and apparatus for improving heat transfer and reaction efficiency of gas hydrate reactor using scraper

Patent metadata

Field	Value
Publication number	US-10023821-B2
Application number	US-201214345501-A
Country	US
Kind code	B2
Filing date	Sep 19, 2012
Priority date	Sep 19, 2011
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

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.

First claim

The invention claimed is:

1. A method comprising:
supplying gas and water to a reactor body in which gas hydrates are created;
applying a driving force to rotate a scraper assembly which is arranged for rotation within the reactor body by using a scraper driving motor;
actuating a stirring apparatus at a different speed from a rotating speed of the scraper assembly by a speed reducer arranged to surround a rotating bar of the scraper assembly; and
removing gas hydrate particles attached onto an inner surface of the reactor body and an upper cover engaged to the reactor body, by a rotational movement of the scraper assembly relative to the inner surface of the reactor body and the upper cover,
wherein the scraper assembly operates to perform a stirring function,
wherein the stirring apparatus is actuated under a condition with the same center of rotation as the scraper, and
wherein the scraper assembly includes: the rotating bar; a first scraper for scraping the inner surface of the reactor body, the first scraper connected to the rotating bar; and a second scraper for scraping the inner surface of the upper cover, the second scraper connected to the rotating bar.

Assignees

• Korea Inst Ind Tech
• Korea Gas Corp
• Daewoo Eng & Constr Co Ltd
• Stx Offshore & Shipbuilding Co Ltd
• Sungilturbine Co Ltd
• Dongshin Hydraulics Co Ltd

Inventors

• Lee Ju Dong
• Kang Kyung Chan
• Hong Sang Yeon
• Lim Jae Il
• Jang Sang Yup
• Hong Seung Beom
• Kim Ho Kyeong
• Woo Ta Kwan
• Kim Sang Min

Classifications

• B01J10/00

  Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially adapted therefor (B01J19/08 takes precedence; separation, e.g. distillation, also combined with chemical reactions B01D, {e.g. B01D3/009}) · CPC title

• B01J2219/00094

  Jackets · CPC title

• B01J4/004 Primary

  Sparger-type elements · CPC title

• C10L3/108 Primary

  Production of gas hydrates · CPC title

• B01J19/0066

  Stirrers (mixing per se B01F) · CPC title