HEAT-AND-MASS TRANSFER APPARATUS Russian patent published in 1995 - IPC

Abstract RU 2046626 C1

FIELD: oil refining industry. SUBSTANCE: heat-and-mass transfer apparatus has heat-exchanging tubes incorporating shaft with spring-biased supporting members arranged in pairs one opposite the other. Strip-shaped scrapers are secured in supporting members. Additional supporting members are mounted below scrapers in spaced relation with scrapers, which are positioned along heat-exchanging tube. with space value not exceeding 0,5(Rin-Rout), where: Rin is inner radius of tube, Rout is outer radius of shaft. Scrapers may be provided with supporting protrusions, with maximum space between contact surfaces of protrusions and shaft surface not exceeding 0,5(Rin-Rout). Additional supporting members may be formed as plates with through slots where scrapers are positioned in spaced relation with respect to slot ends in plate bodies for radial displacement along them. One working edge of each pair of scrapers positioned diametrically may be provided with regularly arranged cleaning ridges and slots, with cleaning ridges of one scraper being positioned in opposed relation with respect to slots of other scraper. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 4 cl, 7 dwg

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RU 2 046 626 C1

Authors

Sel'Skij Boris Evseevich

Dates

1995-10-27Published

1994-05-20Filed