Heat storage equipment for absorbing heat energy of molten calcium carbide by binary salt

Abstract

The invention discloses heat storage equipment for absorbing heat energy of molten calcium carbide by binary salt. The heat storage equipment comprises a heat preservation shell, a salt storage tank is embedded in the heat preservation shell, and a thick-wall rotating sleeve, a spiral water pipe and a first spiral blade are arranged on a lower cylinder of the salt storage tank. The thick-wall rotating sleeve sleeves a driven gear I, the driven gear I is meshed with a driving gear, and the driving gear, a wind wheel bin and turbofan blades are coaxially arranged. The spiral water pipe communicates with the heat preservation shell and the water storage tank. A molten liquid feeding cylinder is internally tangent to the upper cylinder of the salt storage tank, the molten liquid feeding cylinder is provided with a second shaft and a second spiral blade. According to the heat storage equipment for absorbing the heat energy of the molten calcium carbide by the binary salt, the binary salt isadopted to absorb the heat energy of the molten calcium carbide for the first time, the heat preservation shell and the salt storage tank of special structures are designed, the stirring, water lifting and conveying and water heat exchange preheating processes of the binary salt can be achieved through a screw extrusion lifting structure and an Archimedes water pump lifting structure, and calciumcarbide liquid is lifted and stirred in an enhanced mode through the screw extrusion lifting structure; and the heat storage equipment for absorbing the heat energy of the molten calcium carbide by the binary salt is high in heat exchange efficiency, free of plug-in, low in energy consumption and capable of avoiding binary salt caking and saving maintenance cost.

Description

technical field [0001] The invention relates to the technical field of calcium carbide production, in particular to a heat storage device which uses binary salt to absorb heat energy of molten calcium carbide. Background technique [0002] At present, in the calcium carbide production plant, the molten calcium carbide discharged from the calcium carbide furnace is placed in the air and solidified by natural cooling for a long time. The heat of dissolution (latent heat) released when the molten calcium carbide solidifies and the heat released during the cooling process after solidification Heat (sensible heat) has not been recycled, and this process of allowing a large amount of heat energy to be lost at will is unreasonable. [0003] The present invention attempts to introduce binary molten salt into the recovery and utilization of molten calcium carbide waste heat. After investigation, it is found that molten salt is an excellent heat transfer and heat storage medium. Binar...

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Problems solved by technology

[0004] However, in the existing photovoltaic heat storage system, the molten salt tank is one of the key equipments. The inner wall of the molten salt tank of the existing photovoltaic system is very easy to produce salt block adhesion, which often needs to be scraped and cleaned, and the existing molten salt The tank cannot directly collect the heat of molten calcium carbide, so it is necessary to design the system

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