Novel alkali liquor buffer tank

Abstract

The invention discloses a novel alkali liquor buffer tank and relates to the technical field of the caustic soda or solid caustic soda process. According to the novel alkali liquor buffer tank, the heating mode than a heat insulation assembly is arranged on the outer portion of a tank body and a heating assembly is arranged in the tank body is adopted; the heat insulation assembly is of a shell structure corresponding to the contour of the tank body and is arranged outside the tank body in a covering mode, and loss of heat of molten alkali liquor can be effectively reduced from the source; theupper end of the heating assembly is connected to a tank cover, and the lower end of the heating assembly extends to the bottom of an inner cavity of the tank body, that is, the molten alkali liquoris subjected to direct contact heating through the heating assembly arranged in the tank body, heat loss of the heating assembly is effectively reduced, and heat of the heating assembly is made full use of. Accordingly, energy consumption is effectively reduced, and economic benefits are greatly increased. The novel alkali liquor buffer tank has the characteristics of being simple in structure, safe and reliable.

Description

technical field [0001] The invention relates to the technical field of solid alkali or caustic soda industry, in particular to a novel alkali buffer tank. Background technique [0002] In the 99% alkali evaporation process of the chlor-alkali industry, it is necessary to transport the concentrated alkali (90% molten alkali) discharged from the final concentrator into the alkali buffer tank, and then pressurize the alkali buffer tank into the alkali through the concentrated alkali pump In the liquid metering tank, the temperature of the molten alkali is about 300°C. Setting the lye buffer tank can play a role of buffering or buffering the concentrated lye discharged from the final concentrator, so that the concentrated lye pump can be smoothly delivered to the lye metering tank, ensuring the supply speed of the concentrated lye and improving process efficiency. [0003] The structure of the lye buffer tank is mainly composed of a tank body, a tank cover, a liquid inlet pipe,...

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Problems solved by technology

[0004] However, the lye buffer tank of the above-mentioned technical solution exists: the external heating method of partitioning the bottom and side wall of the tank body by electric heating and flowing heating medium respectively, although the cost of a single heating method is reduced to a certain extent, and the heating effect is guaranteed. , but still did not fundamentally solve the problem of heat loss in the tank or save energy consumption. According to the principle of energy conservation, in order to ensure the temperature of the molten lye, the energy naturally transmitted or emitted by the tank is equal to the energy required by the heating device. Therefore, even if the external heating of zones is carried out in consideration of the structure of the tank body, it cannot completely reduce a large amount of waste of energy, thereby greatly increasing the production cost

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