Novel settling tank heating device for aluminum oxide production

Abstract

The invention discloses a novel settling tank heating device for aluminum oxide production. Thenovel settling tank heating device comprises a shell and a settling separation tank, wherein the settling separation tank is movably arranged in the shell, and a feeding opening is formed in the edge of the top face of the settling separation tank. According to the invention, dead steam of steam is guided into an inner cavity of a first heat conduction semi-ring through a group of metal hoses and flange end pipes to guide the steam in the first heat conduction semi-ring into an inner cavity of a second heat conduction semi-ring through a plurality of connecting end pipes so as to introduce the steaminto an external water condenserby using a group of metal hoses and flange end pipes correspondingly arranged on the second heat conduction semi-ring to perform energy recovery, and the first heat conduction semi-ring and the second heat conduction semi-ring are wrapped on the outer surface of a settling separation tank, so that the dead steam can heat the settling separation tank in a heat conduction manner in the recovery process; and a constant-temperature heater arranged on the bottom surface of the inner side of a shell is matched, so that uniform heating of the settling separation tank is facilitated, and energy loss in the aluminum oxide production process can be reduced.

Description

Technical field [0001] The present invention relates to the field of alumina production, and in particular, a novel alumina production settling groove heating device is used. Background technique [0002] In modern aluminum industrial production, alumina production is an essential process process, in the production of alumina production dissolution preheating system, the squeezing slurry process will produce a large number of high-calorie vapor fishing, for recycling, this part Energy, conventional technology is to preheat this partial steam aerosolic pulp, enter the hydroconidist, and enter the expansion tank after condensate in the hydrocomputer, set a simple water spray pipe on the steam inlet tube of the expanded groove. The steam strain of the expanded groove is recovered, and the water of the vapor is mixed with the water spray, and the heat is hydrated by water, and the transport to the hot water station is recycled, and untrained vapor contacts from the expansion tank. Th...

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Problems solved by technology

[0004] At present, when the settling tank is heated by hot steam, there is a problem that the introduction of steam is affected by factors such as excessive liquid pressure inside the settling tank, which affects the uniformity of heating of the settling tank, and the steam used for heating is often provided by supporting equipment , due to the low recovery efficiency of the above-mentioned exhaust steam energy, and the lack of reasonable utilization, it will increase the energy consumption in the alumina production process, which is not conducive to energy conservation and environmental protection

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