Thermal Performance Analysis of Coupled Catalytic Combustion and Rotary Regenerative of Gas Turbine

doi:10.3901/JME.2016.12.144

Abstract

Abstract: There are a lot kinds of low calorific value gas fuels in the world, and the total amount is very huge. Due to low calorific value most of these fuels can’t be realized by ignition and combustion. These fuels are discarded directly, resulting in inadvertent waste of a valuable energy and serous pollution to the atmosphere. In order to utilize these fuels, a new type of gas turbine with coupled catalytic combustion and rotary regenerative have been provided, which had combined combustion and regenerative into one component. Compared with conventional gas turbine, this new machine has many outstanding advantages. Such as using low calorific value gas as main fuel, and the application of catalytic combustion. Rotary regenerative can keep the continue reaction of catalytic combustion. The composition of structure is more compact. The thermal cycle feature of this new type gas turbine system is analyzed, the thermal performance of this new type gas turbine is calculated, effect of rotary period parameter etc to performance is studied. The results prove that when using low calorific value gas containing CH₄ 2% as main fuel, the temperature into turbine can be kept between 1 030 K and 1 200 K, then the gas turbine can work normally. It has shown that this new type gas turbine is feasible in theory. The variation of thermal parameter is low 3% between rotary period, so the thermal parameter is quasi-period. The thermal parameter fluctuated during the rotary period. Reducing the rotary period, the output power and the thermal efficiency are decreased, the fluctuation also decreased.

Key words: catalytic combustion, low calorific value gas fuels, quasi-period, rotary period, rotary regenerative

CLC Number:

TK115

SANG Zhenkun, ZHANG Qianqian, BO Zemin, WENG Yiwu. Thermal Performance Analysis of Coupled Catalytic Combustion and Rotary Regenerative of Gas Turbine[J]. Journal of Mechanical Engineering, 2016, 52(12): 144-151.

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