Heat pump auxiliary heating cascade waste heat recovery steam generation system and working method thereof

Abstract

The invention discloses a heat pump auxiliary heating cascade waste heat recovery steam generation system which comprises a cascade waste heat recovery system, a thermal compression system and a mechanical compression system. The invention further relates to a working method of the heat pump auxiliary heating cascade waste heat recovery steam generation system. In the application, the high-temperature waste heat is firstly recovered for the first time through direct heat exchange and low-temperature evaporation to obtain low-grade waste heat, then the temperature of the low-grade waste heat is increased by virtue of a heat pump system, and high-temperature and high-pressure water vapor is formed through heat exchange, so that the heat of the high-temperature waste heat which is recovered for one time is recovered and utilized again; and deep recovery of high-temperature waste heat is achieved.

Description

technical field

[0001] The invention relates to the field of energy saving and heat pump technology, in particular to a heat pump assisted heating cascade waste heat recovery steam generation system and a working method thereof. Background technique

[0002] Steam boilers can provide high-temperature and high-pressure steam, and are widely used in various processes in industrial production and daily life. The types of traditional steam boilers mainly include fuel boilers and electric boilers. Among them, fuel boilers usually include coal-fired boilers and gas-fired boilers. However, both fuel boilers and electric boilers have their own shortcomings that are difficult to overcome. During the fuel combustion process of the fuel boiler, due to the impurities in the fuel, it will produce pollutants such as nitrogen oxides and greenhouse gases such as carbon dioxide, which will cause great pollution and damage to the environment. The electric heat conversion efficiency of the ...

Examples

Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0036] see figure 1 , The present application provides a heat pump assisted heating cascade waste heat recovery steam generation system, which mainly includes a cascade waste heat recovery system, a thermal compression system and a mechanical compression system. exist figure 1 In the illustrated embodiment, the cascaded waste heat recovery system and the thermal compression system are connected through the high-temperature evaporation tank 10 and the low-temperature evaporation tan...

technical field

[0001] The invention relates to the field of energy saving and heat pump technology, in particular to a heat pump assisted heating cascade waste heat recovery steam generation system and a working method thereof. Background technique

[0002] Steam boilers can provide high-temperature and high-pressure steam, and are widely used in various processes in industrial production and daily life. The types of traditional steam boilers mainly include fuel boilers and electric boilers. Among them, fuel boilers usually include coal-fired boilers and gas-fired boilers. However, both fuel boilers and electric boilers have their own shortcomings that are difficult to overcome. During the fuel combustion process of the fuel boiler, due to the impurities in the fuel, it will produce pollutants such as nitrogen oxides and greenhouse gases such as carbon dioxide, which will cause great pollution and damage to the environment. The electric heat conversion efficiency of the ...

Examples

Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0036] see figure 1 , The present application provides a heat pump assisted heating cascade waste heat recovery steam generation system, which mainly includes a cascade waste heat recovery system, a thermal compression system and a mechanical compression system. exist figure 1 In the illustrated embodiment, the cascaded waste heat recovery system and the thermal compression system are connected through the high-temperature evaporation tank 10 and the low-temperature evaporation tan...

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