Combustion gas turbine methanol compound cycle power generation system

By integrating methanol cracking for hydrogen production and expander technology, and utilizing turbine exhaust waste heat and combined work, the fuel economy and electrification issues of marine gas turbines have been solved, achieving efficient and low-carbon power generation.

CN121828006APending Publication Date: 2026-04-10SHANGHAI NAIRUOSHI POWER TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202610217300.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-15
Publication Date
2026-04-10

AI Technical Summary

Technical Problem

Existing marine gas turbines suffer from insufficient fuel economy and low electrification, leading to increased operating costs and system complexity.

Method used

By integrating methanol cracking hydrogen production technology, expander technology and gas turbine cycle, the waste heat from turbine exhaust is used for the thermal cracking and gasification of methanol fuel. Combined with the combined work of expander and gas turbine power generation unit, the efficient conversion of methanol fuel and power generation are achieved.

Benefits of technology

It improves combustion and power generation efficiency, saves fuel consumption, and the overall system power generation efficiency reaches 46.6%, which is far higher than that of gas turbines of the same power level, and has low carbon and environmental protection characteristics.

✦ Generated by Eureka AI based on patent content.
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Abstract

The invention provides a gas turbine methanol compound cycle power generation system. The gas turbine methanol compound cycle power generation system comprises a liquid methanol storage tank, a pump unit, a liquid methanol gasifier unit, a gaseous methanol cracker unit, an expansion machine power generation unit and a gas turbine power generation unit, exhaust smoke of the gas turbine sequentially passes through the gaseous methanol cracker unit and the liquid methanol gasifier unit to be subjected to heat exchange and cooling and then enters the exhaust system. Liquid methanol is discharged from a liquid methanol storage tank, sequentially passes through a booster pump, a liquid methanol gasifier unit and a gaseous methanol cracker unit and then is converted into mixed gas of methanol, hydrogen and carbon monoxide, and the mixed gas is expanded by an expansion machine power generation unit to do work and then enters a combustion chamber of a gas turbine to be mixed with air for combustion. The system has the advantages that the methanol cracking hydrogen production technology, the expansion machine technology and the gas turbine cycle are integrated, and efficient low-carbon power generation is achieved.
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