Thermodynamic performance of O2/CO2 gas turbine cycle with chemical recuperation by CO2-reforming of methane
Thermodynamic performance of O2/CO2 gas turbine cycle with chemical recuperation by CO2-reforming of methane
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DOI：
10.1016/j.fuel.2007.03.003
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发表时间：
2007-12-01
期刊：
影响因子：
7.4
通讯作者：
Zheng, Danxing
中科院分区：
文献类型：
--
作者：
Cao, Wen;Zheng, Danxing
本文提出了一种新型的动力循环系统，它由CO2-NG重整的化学回热循环和氨吸收制冷循环组成。其中，首先从透平排气中回收热量驱动CO2-NG转化炉，然后将透平排气中的低温热量提供给氨吸收制冷系统产生冷媒，用于冷却除出口以外的透平进气。本文对该循环进行了详细的热力学分析，揭示了该循环的性能，并讨论了关键参数对性能的影响。以1 kg S(-1)甲烷为原料，汽轮机进口温度为1573K，模拟结果表明，循环优化后的低热值净发电效率为49.6%，火用效率为47.9%，新系统达到净发电量24.799 MW，出口冷负荷0.609 MW，回收2.743 kg S(-1)液态二氧化碳，实现了二氧化碳和氮氧化物的零排放。(C)2007爱思唯尔有限公司。保留所有权利。
This paper proposes a novel power cycle system composed of chemical recuperative cycle with CO2-NG (natural gas) reforming and an ammonia absorption refrigeration cycle. In which, the heat is recovered from the turbine exhaust to drive CO2-NG reformer firstly, and then lower temperature heat from the turbine exhaust is provided with the ammonia absorption refrigeration system to generate chilled media, which is used to cool the turbine inlet gas except export. In this paper, a detailed thermodynamic analysis is carried out to reveal the performance of the proposed cycle and the influence of key parameters on performance is discussed. Based on 1 kg s(-1) of methane feedstock and the turbine inlet temperature of 1573 K, the simulation results shown that the optimized net power generation efficiency of the cycle rises up to 49.6% on the low-heating value and the exergy efficiency 47.9%, the new cycle system reached the net electric-power production 24.799 MW, the export chilled load 0.609 MW and 2.743 kg s(-1) liquid CO2 was captured, achieved the goal of CO2 and NOx zero-emission. (c) 2007 Elsevier Ltd. All rights reserved.