以生物质气为燃料的微型燃气轮机运行特性分析

发布时间：2019-04-04 09:03

【摘要】：本研究以某公司30 k W微型燃机为对象,利用仿真模拟的方法,研究其以稻草气、棉柴气、木片气和沼气4种生物质气为燃料的可行性,计算燃用不同生物质气时微型燃机的安全运行工况。研究表明:该燃机无法燃用热值较低的稻草气与棉柴气,因其无法同时满足压气机喘振裕度及透平入口温度的要求;燃用热值较高的木片气和沼气时,微型燃机可以安全运行,木片气可以在压比为3.247~3.251、功率为18.13~32 k W范围内安全运行,沼气可以在压比为3.203~3.207、功率为15.9~32 k W范围内安全运行。针对微型燃机无法燃用低热值燃料这一问题,提出改进压气机方案,该方案增大了燃用低热值燃料时压气机的喘振裕度及透平入口温度,使其能够安全运行。
[Abstract]:In this paper, the feasibility of using straw gas, cotton wood gas, wood chip gas and biogas as fuel was studied by means of simulation and simulation for a 30kW micro-gas turbine in a certain company, and the feasibility of using straw gas, cotton wood gas, wood chip gas and biogas as fuel was studied. The safe operation condition of micro gas turbine with different biomass gas is calculated. The results show that straw gas and cotton wood gas with lower calorific value can not be used in this gas turbine because it can not meet the requirements of compressor surge margin and turbine inlet temperature at the same time. When burning wood chip gas and biogas with high calorific value, the micro gas turbine can operate safely. The chip gas can operate safely in the pressure ratio of 3.247 ~ 3.251 and the power of 18.13 ~ 32 kW. The biogas can be operated at a pressure ratio of 3.203 ~ 3.207, and the gas can be operated safely at a pressure ratio of 3.247 ~ 3.251 and a power of 18.13 ~ 32 kW. The power is within the range of 15.9 and 32 kW safe operation. In view of the problem that low calorific value fuel can not be used in micro gas turbine, an improved compressor scheme is proposed, which increases the surge margin and turbine inlet temperature of the compressor when low calorific value fuel is used, so that the compressor can operate safely.
【作者单位】：上海交通大学动力机械与工程教育部重点实验室;
【基金】：国家自然科学基金资助项目(51376123) 国家高技术研究发展计划(863计划)基金资助项目(2014AA052803)
【分类号】：TK477;TK6

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