A molten salt layered energy storage system capable of constant temperature steam supply
An energy storage system and salt technology, applied in control/regulation system, temperature control, temperature control by electric means, etc., can solve the problem of high heat storage temperature of molten salt, compressing the working temperature range of molten salt, reducing heat storage capacity, etc. problem, to achieve the effect of large heat storage capacity and wide operating temperature range
Active Publication Date: 2021-11-19
XIAN XIRE ENERGY SAVING TECH
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Problems solved by technology
Since the specific heat of molten salt is about 1.4kJ / (kg K), which is much smaller than that of water, the heat storage temperature difference is large
The heat storage temperature of the molten salt is high at the initial stage of heat release, and the steam outlet temperature is too high; as the molten salt continues to release heat, the temperature of the molten salt drops rapidly, and the temperature of the steam outlet also decreases, especially in the later stage of heat release. The outlet temperature is too low to meet the production demand, thus compressing the working temperature range of the molten salt and reducing the heat storage capacity
Method used
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[0021] The present invention will be further described in detail below with reference to the accompanying drawings:
[0022] refer to Figure 1 to 2 Layered molten salt storage system according to the present invention can include a steam supply temperature heat storage tank 1, the heater 7, water inlet pipe 12, desuperheating water pipe 11, spray desuperheater 10, the steam pipe 13, the circulation pump 16 and an electric heating furnace 18; the heat storage tank from top to bottom is provided with a plurality of partition plates 1 2, wherein each of the partition plate defines overflow hole 2 are 3, heater 7 comprising a plurality of sequentially communicating heat exchange tubes, wherein each of the heat exchange tubes located in the bottom of the heat storage tank 1 between two adjacent dividing panels, water outlet conduit 12 is divided into two parts, the way in which the inlet communicates with the heater 7, another path Save hot water pipe 11 and the spray desuperheater wat...
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The invention discloses a molten salt layered energy storage system capable of supplying steam at a constant temperature. Several partition plates are arranged in the heat storage tank from top to bottom, wherein overflow holes are opened on each partition plate, and heaters It includes a number of heat exchange tubes connected in sequence, wherein each heat exchange tube is located between adjacent partition plates at the bottom of the heat storage tank, and the outlet of the water inlet pipe is divided into two paths, one of which is connected to the inlet of the heater, and the other One path is connected to the water inlet of the water spray desuperheater through the desuperheating water pipeline. The desuperheating water pipeline is provided with a first regulating valve, and the outlet of the heater is connected to the steam pipeline after passing through the water spray desuperheater. The bottom of the heat storage tank The outlet is connected to the inlet of the electric heating furnace through the circulation pump, and the outlet of the electric heating furnace is connected to the top inlet of the heat storage tank. This system has the characteristics of high heat storage capacity and wide working temperature range of molten salt, and at the same time meets the steam outlet temperature demand.
Description
Technical field [0001] The present invention belongs to the field of commercial and industrial production, particularly relates to a layered molten salt storage system capable of thermostatic steam supply. Background technique [0002] In recent years, due to the rise in demand for energy storage, the molten salt as a heat storage medium more and more widely used. Working temperature of the molten salt 150 ℃ ~ 550 ℃, low temperature molten salt, or alternatively a high temperature molten salt according to particular needs. Since the specific heat of the molten salt is about 1.4kJ / (kg · K) or so, much smaller than the specific heat of water, resulting in a large temperature difference between the heat storage. High initial exotherm the molten salt heat storage temperature, high temperature steam outlet; With continued heat molten salt, the molten salt temperature is decreased rapidly, the steam outlet temperature decreases, especially in the late exotherm temperature drop is too...
Claims
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IPC IPC(8): F28D20/02F28F27/00G05D23/19
CPCF28D20/02F28F27/00G05D23/1934Y02E60/14
Inventor 尚海军乔磊常东锋刘圣冠赵立纾翟鹏程贺凯耿如意冯铁玲赵锋
Owner XIAN XIRE ENERGY SAVING TECH