# US 8,784,751 B2 · Thermowell compound apparatus of high shell for residue hydrogen desulfurization

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 8,784,751 B2
- Document ID: US8784751B2
- Status: Granted
- Kind: B2
- Application number: 12/452,724
- Filed: 2008-08-06
- Published: 2010-06-03
- Granted: 2014-07-22
- Earliest claimed: 2007-08-06
- Assignees: SK Innovation Co., Ltd.; SK Energy Co., Ltd.
- Applicants: Hyung No Yoon; Sang Mo Lee; Jin Gyu Kim; Mock Huh; Choo Jei Kim
- Inventors: Hyung No Yoon; Sang Mo Lee; Jin Gyu Kim; Mock Huh; Choo Jei Kim
- Web page: https://patentgrep.com/patent/US8784751B2

## CPC

- C10G 31/06: by heating, cooling, or pressure treatment
- B01J 3/03: Pressure vessels, or vacuum vessels, having closure members or seals specially adapted therefor
- B01J 8/025: {in a cylindrical shaped bed}
- C10G 45/02: to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing
- C10G 45/72: Controlling or regulating
- B01J 2208/00061: of the reactants
- B01J 2219/00256: Leakage
- C10G 2300/202: Heteroatoms content, i.e. S, N, O, P
- C10G: CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION (cracking to hydrogen or synthesis gas C01B; cracking or pyrolysis of hydrocarbon gases to individual hydrocarbons or mixtures thereof of definite or specified constitution C07C; cracking to cokes C10B); RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS

## Abstract

The present invention relates to a thermowell blocking apparatus for a high-pressure reactor used in a desulfurization process, which can rapidly prevent noxious high-temperature and high-pressure gases from leaking out of a high-pressure reactor when the noxious high-temperature and high-pressure gases leak from the high-pressure reactor due to unexpected damage occurring to a thermowell used for measuring a reaction temperature of a catalyst. The thermowell blocking apparatus can prevent the economic losses caused by the stoppage of the desulfurization process, and can reduce consequential damages to human life, the environment, and the like.

## Claims

### Claim 1

A thermowell blocking apparatus for a high-pressure reactor used in a desulfurization process, comprising:
a protection tube passing through a high-pressure reactor;
a thermowell provided at a front end of the protection tube to be immersed in a catalyst charged
in the high-pressure reactor;
a temperature sensor provided in the protection tube to measure a reaction temperature of the catalyst, the temperature sensor being connected with the thermowell;
leakage prevention means provided at the protection tube exposed to the outside of the high pressure reactor to block a leakage path of noxious gases; and
a boss adhered to an inner surface of the high-pressure reactor to include the protection tube therein;
wherein the leakage prevention means includes a compression blocking unit which is provided at a rear end of the protection tube and blocks a leakage path of noxious gases, and the leakage path of noxious gases is blocked by providing the leakage prevention means at the protection tube and then welding them together,
wherein the rear end of the protection tube and the compression blocking unit are provided with screw threads, respectively, to rapidly block the leakage path and are then welded.

### Claim 2

A thermowell blocking apparatus for a high-pressure reactor used in a desulfurization process, comprising:
a protection tube passing through a high-pressure reactor;
a thermowell provided at a front end of the protection tube to be immersed in a catalyst charged in the high-pressure reactor;
a temperature sensor provided in the protection tube to measure a reaction temperature of the catalyst, the temperature sensor being connected with the thermowell;
leakage prevention means provided at the protection tube exposed to the outside of the high-pressure reactor to block a leakage path of noxious gases; and
a boss adhered to an inner surface of the high-pressure reactor to include the protection tube therein;
wherein the leakage prevention means comprises:
an extended protection tube provided at a rear end of the protection tube; and
an auxiliary compression blocking unit which is provided at a rear end of the extended protection tube and blocks a leakage path of noxious gases,
wherein the rear end of the extended protection and the auxiliary compression blocking unit are provided with screw threads, respectively, to rapidly block the leakage path and then welded.

### Claim 3 (depends on 1)

The thermowell blocking apparatus according to claim 1, wherein the compression blocking unit is covered with a sealing cap having a sealing space and thus isolated, and the sealing space is charged with a sealing agent.

### Claim 4 (depends on 2)

The thermowell blocking apparatus according to claim 2, wherein the auxiliary compression blocking unit is covered with a sealing cap having a sealing space and thus isolated, and the sealing space is charged with a sealing agent.