Distributed energy resource waste heat utilization system

Abstract

The invention relates to a distributed energy resource waste heat utilization system which comprises a gas turbine generator set, a steam turbine generator set and a waste heat boiler. The system is characterized in that an exhaust end of a gas turbine is communicated with a gas inlet end of the waste heat boiler, and a steam output end of the waste heat boiler is connected with a steam inlet end of a steam turbine, so that a gas turbine waste heat utilization loop is formed; a steam outlet end of the steam turbine is connected with a water inlet end of the waste heat boiler sequentially by a condenser and a water feed pump, so that a steam turbine waste heat utilization loop is formed; a hot water heat exchanger is arranged at the tail end of the waste heat boiler; a water outlet end of the hot water heat exchanger is connected with a water inlet end of a natural gas heating unit by a hot water supply mother pipe, and a water return end of the hot water heat exchanger is connected with a water outlet end of the natural gas heating unit by a hot water return mother pipe, so that a waste heat cyclic utilization loop of the gas turbine generator set and the steam turbine generator set can be formed. The distributed energy resource waste heat utilization system can be used for solving the problems that a natural gas heating mechanism is high in energy consumption and poor in safety in the prior art, and has the beneficial effects of utilizing the flue gas of the waste heat boiler, reducing the system energy consumption and reducing the flue gas emission.

Description

technical field [0001] The invention relates to a waste heat utilization system, in particular to a distributed energy waste heat utilization system. It belongs to the technical field of energy utilization. Background technique [0002] At present, the prime mover is a distributed energy system of a small gas turbine, which generally uses natural gas as fuel, and the main equipment includes a gas turbine generator set, a waste heat boiler, and a steam turbine generator set. [0003] Since the gas turbine has certain requirements on the intake parameters of natural gas, the generator set of the natural gas power plant cannot directly use the natural gas from the gas supply terminal to generate electricity, and a pressure regulating station needs to be installed between the gas supply terminal and the gas inlet of the gas turbine. Adjust the intake pressure of natural gas. According to the Joule-Thomson effect, the pressure drop of natural gas passing through the surge stati...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a distributed energy waste heat utilization system to solve the problems of high energy consumption, poor safety performance or increase the complexity of the original thermal system in the existing natural gas heating mechanism

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