High-efficiency melting furnace of phase-changing heat storage medium

Abstract

The invention relates to the technical field of heat storage devices, in particular to a high-efficiency melting furnace of a phase-changing heat storage medium. The high-efficiency melting furnace comprises a heat preserving cylinder body, heating burners and a smoke discharging pipe, wherein the heat preserving cylinder body is provided with an injection port for injecting the phase-changing heat storage medium, and a discharge port for discharging a liquid phase-changing heat storage medium; a plurality of supporting pipes for enabling the inside of the heat preserving cylinder body to be communicated with the outside of the heat preserving cylinder body are arranged on the outer side wall of the heat preserving cylinder body; a heating cavity is fixed in each supporting pipe, and connected with the corresponding supporting pipe in a sealed manner; the inside of the heat preserving cylinder body is isolated from the outside of the heat preserving cylinder body; the heating burners are fixedly arranged in the heating cavities; the heating cavities are connected with the smoke discharging pipe through a plurality of heating pipes respectively arranged at the inner part of the heat preserving cylinder body. According to the high-efficiency melting furnace of the phase-changing heat storage medium, disclosed by the invention, the heat generated by the heating burners directly enters the heat preserving cylinder body through the heating pipes to be exchanged, so that the solid phase-changing heat storage medium is molten into liquid; the high-efficiency melting furnace is high in salt melting efficiency and heat utilization ratio.

Description

technical field [0001] The invention relates to the technical field of energy storage devices, in particular to a high-efficiency phase-change heat storage medium melting furnace. Background technique [0002] Energy storage is a key and essential link in a solar thermal power generation system. The energy storage medium is mostly a phase-change heat storage medium, which absorbs and releases heat through the phase change of the heat storage medium, thereby realizing the heat storage function. In a commercially operated photothermal power station, the amount of phase change heat storage medium used is generally about 30,000 tons or more, and the melting capacity of the melting furnace is generally more than 720 tons per day. The melting speed is fast, efficient and safe. The furnace has become a must for the construction of solar thermal power plants. [0003] There are two kinds of phase change medium melting furnaces currently in use, one is the traditional shell and tube...

AI Technical Summary

Problems solved by technology

Because the heat is absorbed in the tube, it is easy to cause uneven local heat absorption, resulting in the decomposition of the phase-change heat storage medium due to the high temperature, forming an adsorption film, which is adsorbed on the inner wall of the heat-absorbing tube, which will reduce the heat-absorbing efficiency over time and affect the safe operation of the system; At the same time, because the phase change heat storage medium absorbs heat in the tube, the equipment is prone to blockage during operation, causing irreparable damage and affecting the safety of the entire phase change heat storage medium melting system

There are many types of system equipment, poor compatibility, and high investment costs

[0005] When the round crucible phase-change medium melting furnace is working, the solid phase-change medium can directly enter the melting device, but there is a combustion chamber outside the inner pot for the combustion equipment to work, and the other side of the combustion chamber is wrapped with heat-insulating refractory

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