Steam exhaust waste heat recovery unit

Abstract

The invention discloses a steam exhaust waste heat recovery unit, belonging to the field of heating, ventilating and air conditioning. The steam exhaust waste heat recovery unit consists of an absorption heat pump and a condenser. Input steam exhaust enters into the condenser and the evaporator of the absorption heat pump simultaneously, hot water sequentially passes through the condenser and the absorber and condenser of the absorption heat pump to be heated step by step, the steam exhaust and the hot water in the condenser exchange heat, the hot water is heated, the heated hot water flows into the absorption heat pump, a high temperature heat source is taken as a driving energy source to absorb the heat in the steam exhaust, the steam exhaust releases heat and is condensed into condensed water, and the condensed water flows out the unit and is recovered by a condensed water recovery system by virtue of a return water pipe. By utilizing the steam exhaust waste heat recovery unit disclosed by the invention, the recovery problem of low temperature steam exhaust waste heat released by turbine in a power plant or released during industrial production, and higher temperature heat supply network hot water can be produced.

Description

technical field [0001] The invention belongs to the field of heating, ventilating and air-conditioning, and in particular relates to a exhaust steam waste heat recovery unit. Background technique [0002] At present, a large amount of low-temperature and low-pressure exhaust steam is generated in the steam turbine of a power plant or in the industrial production process. The heat of this exhaust steam is directly discharged to the atmosphere through circulating water cooling or air cooling, and is wasted in vain. Since the heat quality of this part of the exhaust steam is often very low and cannot be used directly, the heat pump heating technology can be used for the exhaust steam circulating water cooling system. It is very large and the pressure and temperature are low, so it is difficult to directly extract and utilize it. At present, there is no precedent for directly recycling this part of exhaust steam waste heat. Contents of the invention [0003] The object of the...

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Problems solved by technology

[0002] At present, a large amount of low-temperature and low-pressure exhaust steam is generated in the steam turbine of a power plant or in the industrial production process. The heat of this exhaust steam is directly discharged to the atmosphere through circulating water cooling or air cooling, and is wasted in vain.

Since the heat quality of this part of the exhaust steam is often very low and cannot be used directly, the heat pump heating technology can be used for the exhaust steam circulating water cooling system. It is very large and the pressure and temperature are low, so it is difficult to directly extract and utilize it. At present, there is no precedent for directly recycling this part of exhaust steam waste heat

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