Closed self-regenerating semiconductor heat pump low-temperature evaporation system and method
A low-temperature evaporation and semiconductor technology, applied in the field of energy and power, can solve the problems of crystallizer, secondary steam compressor with large structure size, and low steam evaporation pressure
Active Publication Date: 2017-10-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
Although the use of mechanical vapor recompression heat pump evaporation is a technology with significant energy-saving potential, however, when the evaporation crystallization temperature is lower than the ambient temperature, the corresponding steam evaporation pressure is not high, resulting in the structural size of the crystallizer and the secondary steam compressor. huge
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[0010] Refer below figure 1 The operation process of the self-enclosed self-regenerating semiconductor heat pump low-temperature evaporation system is described. When starting up the system for the first time, it is necessary to evacuate the entire system. The main operation steps are as follows:
[0011] First, the raw material 2 from the raw material tank 1 is conveyed by the raw material pump 3, enters the preheater 4 to absorb the partial condensation latent heat of the steam in the casing 6, and the raw material 2 at the outlet of the preheater 4 is heated to a higher temperature, and then the raw material 2 is combined with the crystallizer 5 After the part of the concentrated solution at the liquid phase outlet is mixed, it is sent into the crystallizer 5 by the circulation pump 10;
[0012] In the crystallizer 5, the solution is partially evaporated after the heat released by the semiconductor cooling plate 8, and the evaporated steam first passes through the screen ...
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The invention discloses a closed self-backheating semiconductor heat pump low-temperature vaporization system and method and belongs to the field of energy and power. The closed self-backheating semiconductor heat pump low-temperature vaporization system and method is characterized by comprising a raw material tank (1), a raw material pump (3), a preheating pipe (4), a crystallizer (5), a shell jacket (6), a direct-current power source (7), a semiconductor chilling plate (8), a graphite heat conduction film (9), a circulating pump (10), a screen separator (12), a condensed fluid storage tank (14), a concentrated solution pump (15), a concentrated solution storage tank (17) and a refrigerant water pipe (18). The heat pump performance coefficient of the whole low-temperature vaporization system is smaller than 1, and the low-temperature vaporization system saves energy compared with a conventional direct electric heating low-temperature evaporative crystallization system. In addition, compared with a low-temperature vaporization system adopting mechanical vapor recompression, though the closed self-backheating semiconductor heat pump low-temperature vaporization system has the low heat pump performance coefficient, the overall investment cost is also low as no compression of huge structural dimensions is adopted.
Description
technical field [0001] The invention relates to a closed self-regenerating semiconductor heat pump low-temperature evaporation system and a working method, belonging to the field of energy and power. Background technique [0002] Low-temperature evaporation crystallization is a technical process widely used in chemical, food, and pharmaceutical industries. Since the evaporation process requires a large amount of potential, the method of direct electric heating consumes a large amount of electric energy, and consumes a large amount of low-temperature cold medium for cooling. secondary steam. Although the use of mechanical vapor recompression heat pump evaporation is a technology with significant energy-saving potential, however, when the evaporation crystallization temperature is lower than the ambient temperature, the corresponding steam evaporation pressure is not high, resulting in the structural size of the crystallizer and the secondary steam compressor. huge. Therefor...
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IPC IPC(8): B01D9/02B01D1/00F25B21/02
Inventor 韩东岳晨何纬峰蒲文灏
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS