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等离子裂解煤制乙炔工艺是一种处于试验阶段的新型煤化工路线。系统的节能、平稳运行对新工艺的经济性和可行性至关重要。本文基于夹点技术对煤制乙炔全流程进行了用能分析和诊断,得出了最优的能量利用目标;在考虑实际约束的情况下提出2套换热方案。进一步,利用路径法得出两套换热方案的传递函数,由此建立了动态仿真模型,进而得到2套换热方案对扰动的动态响应特性;在对传递函数进行分析的基础上,发现影响换热网络动态性能的公用工程位置和单个换热器换热充分度2个因素。结果表明,方案1和方案2均具有较好的动态性能,能够保障节能方案的平稳运行。
Plasma pyrolysis of coal acetylene process is a new phase of the coal chemical industry in the pilot phase. System of energy-saving, smooth operation of the new technology is very important for the economy and feasibility. In this paper, based on the pinch-point technology, the whole process of coal acetylene is analyzed and diagnosed using energy, and the optimal target of energy utilization is obtained. Two sets of heat transfer schemes are proposed considering the actual constraints. Furthermore, the transfer function of two heat transfer schemes is obtained by using the path method. The dynamic simulation model is established and the dynamic response characteristics of two heat exchange schemes to disturbances are obtained. Based on the analysis of the transfer function, it is found that the influence Heat exchange network dynamic performance of the public works location and a single heat exchanger fully heat 2 factors. The results show that both scheme 1 and scheme 2 have good dynamic performance, which can ensure the smooth operation of energy saving scheme.