Novel combined heat and power generation system and working method thereof

Abstract

The novel combined heat and power generation system comprises a gas turbine, a burner and a waste heat boiler, an exhaust port of the gas turbine is communicated with an air inlet of the burner, an exhaust port of the burner is communicated with an air inlet of the waste heat boiler, an exhaust port of the waste heat boiler is divided into two paths, one path is communicated with the air inlet of the burner through a circulating fan, and the other path is communicated with the air outlet of the waste heat boiler. And the other path is communicated with a chimney. Exhaust gas of the gas turbine serves as combustion-supporting gas of the combustor, a low-grade heat source is directly converted into a high-grade heat source, and the energy utilization rate of the gas turbine is greatly increased; the exhaust gas part passing through the waste heat boiler flows back to the combustion engine to be recycled, a low-grade heat source is converted into a high-grade heat source, the exhaust air rate of a chimney is reduced, the total amount of the low-grade heat source is reduced, through the design of an economizer, the temperature of tail gas exhausted by the chimney is reduced, the energy utilization rate is increased, and the low-nitrogen reduction combustion engine technology of staged combustion is adopted. And ultralow emission of tail gas is realized.

Description

technical field [0001] The invention relates to the technical field of cogeneration, in particular to a novel cogeneration system and a working method thereof. Background technique [0002] At present, my country is in the process of rapid industrialization, and social and economic development is increasingly dependent on energy. Energy and environmental issues have become issues at the national strategic level. In terms of sustainable development strategy, my country has proposed a development path that emphasizes quality, high growth, high efficiency, minimal energy consumption, and minimal environmental pollution; in terms of energy utilization, it implements the policy of giving priority to energy conservation, multiple structures, environmental friendliness, and market promotion. . [0003] In the existing market, the energy utilization efficiency of gas turbines is low. Small gas turbines based on cogeneration use natural gas for power generation and heating, and the t...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a new type of cogeneration system and its working method to solve the problems of low energy utilization rate of gas turbines and substandard emissions of gas boilers in the prior art

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