Patent ID: 8784751

Claim:
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.