Stepped waste heat recycling device and working method

Abstract

The invention discloses a stepped waste heat recycling device and a working method. The stepped waste heat recycling device comprises an absorption-type heat pump system and a heat-work conversion system. The device is integrated with an absorption-type heat pump and heat engine technology and is driven by a waste heat working medium, the waste heat working medium sequentially passes through a superheater, a high-pressure generator, a low-pressure generator and a waste heat recoverer, high-temperature and high-pressure steam produced by the high-pressure generator of the device is super-heated, then a turbine motor expands to output mechanical work for generating power, the dead steam exhausted by the turbine motor and the high-temperature and high-pressure steam produced by the low-pressure generator enters a condenser to be condensed and to release heat for heat supply and heating in winter, a steam generator produces cold energy for refrigeration and cooling, and the effects of combined heat and power generation in winter and combined cold and power generation in summer are achieved. The device fully recovers waste heat energy of a working medium in a stepped waste heat recycling mode, makes waste heat mass-energy utilization most economized, effectively reduces atmosphere heat pollution while the energy utilization rate is improved and has the lots of advantages of saving energy, reducing emissions, economic in operation and wide in application range.

Description

technical field [0001] The invention relates to a waste heat recovery device, and more specifically relates to a heat pump device for waste heat recovery, which belongs to the technical field of energy engineering. Background technique [0002] Energy conservation and emission reduction is a long-term strategic policy for my country's economic and social development, and it is also an extremely urgent task. Recycling waste heat to reduce energy consumption is of great practical significance to my country's energy-saving, emission reduction, and environmental protection development strategies; at the same time, waste heat utilization plays an increasingly important role in improving labor conditions, saving energy, increasing production, improving product quality, and reducing product costs. greater effect. [0003] In real life, there is a lot of lack of steam and waste heat in the power plant and the waste heat of the flue gas is discharged in vain, which causes a waste of ...

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Problems solved by technology

[0003] In real life, there is a lot of lack of steam and waste heat in the power plant and the waste heat of the flue gas is discharged in vain, which causes a waste of energy and emits a large amount of heat into the atmosphere, resulting in thermal pollution; During the discharge process, a large amount of heat energy is also released into the atmosphere

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