Drying and gas or vapor contact with solids – Apparatus – Rotary drums or receptacles
Patent
1986-02-13
1987-03-17
Schwartz, Larry I.
Drying and gas or vapor contact with solids
Apparatus
Rotary drums or receptacles
34141, 175 66, 175206, 432107, 432112, F26B 1104
Patent
active
046496556
ABSTRACT:
Apparatus for dehydrating slurries such as water based drilling fluids heavily laden with drill cuttings and other earth solids comprising a rotating drum which is heated by combustion of a fuel air mixture to generate relatively large quantities of combustion products for heating in an enclosed chamber defined by said drum. The slurry to be dehydrated is injected into the interior of the drum or against the outer sidewall thereof for rapid exposure and substantially flash evaporation of the slurry liquids. An outer housing may be constructed around the drum and in one embodiment the drum is arranged inclined to the horizontal with the slurry introduced into the interior of the drum and the combustion chamber formed between the outer housing and the drum. In another embodiment the combustion chamber is formed on the interior of the drum and the evaporation chamber is formed between the drum and the outer housing. The exhaust flues for the evaporation chamber and the combustion chamber are interconnected to provide for induced flow of gases through a stack portion of one of the flues and to dilute the vapor flow stream to minimize the generation of condensation clouds or ice fogs during operations in cold environments.
REFERENCES:
patent: 2919898 (1960-01-01), Marwil et al.
patent: 4043745 (1977-08-01), Unger
patent: 4280879 (1981-07-01), Taciuk
patent: 4319410 (1982-03-01), Heilhecker
Atlantic Richfield Company
Martin Michael E.
Schwartz Larry I.
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