Fired heater for coal liquefaction process

Details Fired heater for coal liquefaction process Fired heater for coal liquefaction process

1983-10-19

1985-12-17

Yuen, Henry C.

Furnaces

Process

Burning pulverized fuel

208 8R, 208 10, 110229, F23D 100, C10G 106

Patent

active

045586519

ABSTRACT:
A fired heater for a coal liquefaction process is operated under conditions to maximize the slurry slug frequency and thereby improve the heat transfer efficiency. The operating conditions controlled are (1) the pipe diameter and pipe arrangement, (2) the minimum coal/solvent slurry velocity, (3) the maximum gas superficial velocity, and (4) the range of the volumetric flow velocity ratio of gas to coal/solvent slurry.

REFERENCES:
patent: 3855070 (1974-12-01), Squires
patent: 3884794 (1975-05-01), Bull et al.
patent: 3884796 (1975-05-01), Hinderliter et al.
patent: 3950146 (1976-04-01), Funk
patent: 3951615 (1976-04-01), Gernhardt et al.
patent: 3997423 (1976-12-01), Greene
patent: 4012311 (1977-03-01), Greene
patent: 4069020 (1978-01-01), Bond et al.
patent: 4411767 (1953-10-01), Garg
patent: 4473459 (1984-09-01), Bose et al.

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