Apparatus and control system for heating asphalt

Details Apparatus and control system for heating asphalt Apparatus and control system for heating asphalt

1974-12-02

1977-06-07

Albritton, C. L.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

1263435A, 219312, 219330, 219477, 219483, F24H 118, H05B 100

Patent

active

040285278

ABSTRACT:
An apparatus is disclosed for melting asphalt and for maintaining it in a molten condition without producing by-products harmful to the atmosphere. The asphalt is heated and maintained in a liquid state in an enclosed vessel by transferring heat from a heating means through inner wall portions of the vessel. Air polluting by-products are minimized due to the increased surface area heating the asphalt and the resulting reduced thermal gradient which prevents decomposition of the asphalt. A control system for selectively controlling the heating of the asphalt in a manner which reduces the production of air polluting products is also disclosed.

REFERENCES:
patent: 2888545 (1959-05-01), Kinney
patent: 2922488 (1960-01-01), Gruner
patent: 3004130 (1961-10-01), Miller
patent: 3143108 (1964-08-01), Rogers
patent: 3280301 (1966-10-01), Anderson et al.
patent: 3372693 (1968-03-01), Gutzeit
patent: 3522692 (1970-08-01), Brookman
patent: 3718131 (1973-02-01), Busse et al.
patent: 3759015 (1973-09-01), Saxby
patent: 3804079 (1974-04-01), Schrader

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