Apparatus and process for the periodic cleaning-out of solids de

Details Apparatus and process for the periodic cleaning-out of solids de Apparatus and process for the periodic cleaning-out of solids de

1980-11-25

1982-12-28

Fisher, Richard V.

Cleaning and liquid contact with solids

Processes

Combined

134 2212, 134 2215, 165 1, 165 95, 15316A, 55 97, B08B 302, B08B 502, B08B 902

Patent

active

043660037

ABSTRACT:
The invention concerns an apparatus and a process for the periodic cleaning out of the pipes of heat exchangers to remove deposits of finely-divided solids, in particular carbon black or pyrogenically produced inorganic oxides. The apparatus consists of jet nozzles, which are arranged at a spacing above the gas entry openings of the pipes and are supplied with a cleaning gas, having excess pressure with respect to the process gas, via ducts provided with shut-off elements. The jet nozzles can be stationary or arranged for displacement along a row of the heat exchanger pipes. The process envisages flushing the pipes to be cleaned preferably in succession during operation of the heat exchanger, periodically, with a gas stream released with an impact and maintained for a short time at high speed.

REFERENCES:
patent: 2069574 (1937-02-01), Bowers
patent: 2717658 (1955-09-01), Bethea et al.
patent: 3364983 (1968-01-01), Krinov et al.
patent: 3827102 (1974-08-01), Adiutori
patent: 4141754 (1979-02-01), Frauenfeld

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