A composite energy supply system based on the deep recovery of waste heat

Abstract

The invention belongs to the technical field related to energy utilization, and discloses a composite energy supply system based on the deep recovery of waste heat, which includes a gas turbine, a generator set, a potassium bromide absorption heat pump unit, a magnetic suspension heat pump unit, a high temperature Flue gas heat exchanger and flue gas condensing heat exchanger, etc., among which the flue gas outlet of the gas turbine is divided into two, the first pipeline is connected with the flue gas type lithium bromide absorption heat pump and drives it to realize cooling and heating; the second pipeline The pipeline is connected to the high-temperature flue gas heat exchanger, which is used to heat the tap water preheated by the flue gas condensing heat exchanger to the required temperature. The outlet of the high-temperature flue gas heat exchanger is connected to the flue gas inlet of the flue gas condensing heat exchanger. In addition, part of the power generated by the gas turbine is supplied to the user, and the other part is used to drive the maglev heat pump unit for cooling and heating. Through the present invention, it is possible to realize the deep recovery of waste heat while performing flexible composite energy supply, and has the characteristics of compact structure, convenient operation, strong adaptability and the like.

Description

technical field [0001] The invention belongs to the technical field related to energy utilization, and more specifically relates to a composite energy supply system based on the deep recovery of waste heat and combined cooling, heating and power supply. Background technique [0002] Combined cooling, heating and power supply system refers to the operation of gas-fired power generation equipment driven by natural gas as the main fuel. In addition to supplying the electricity demand of users, the waste heat discharged by the system after power generation can provide heat supply and Cooling function. In this way, the primary energy utilization rate of the entire system can be significantly improved, and cascade utilization of energy can be realized; in addition, grid-connected power can be provided for energy complementarity, and the economic benefits and efficiency of the entire system will increase accordingly. [0003] Some combined cooling, heating and power supply schemes...

AI Technical Summary

Problems solved by technology

For example, CN20142064744.2 discloses an urban sewage combined cooling, heating and power supply system coupled with multiple renewable energy sources, which can make full use of solar energy, wind energy and geothermal energy, and realize two coupling modes according to changes in the demand side, but this The technology is subject to the conditions of solar and wind energy, so it is subject to greater limitations

In addition, CN201210142139.0 discloses a composite system of a natural gas-based distributed energy system coupled with a ground source heat pump. This system can make full use of low-temperature flue gas and use it as an absorption dehumidification, but the system needs to be equipped with ice storage devices and Grid-connected devices, and may face the problem of difficulty in connecting power to the grid

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