考虑反应和精馏不确定性的催化裂化装置换热网络集成研究

Catalytic-cracking is an important means of processing heavy crude oil into light products and the secondary processing of crude oil. Its reaction and distillation parameters affect the heat source and heat sink of the heat exchanger design and thereby affects the match and energy consumption of the heat exchanger network. To design the optimal Catalytic-cracking process, reactor, distillation column, heat exchanger network and utilities should be integrated and optimized synchronously.. The project aims to establish a heat exchanger network integration method considering the uncertainty of the sink and source streams, based on strict algebraic reasoning and graphic analysis. This method can be applied to consider the composition, flow rate and temperature change caused by the uncertainty of the reaction and distillation parameters. Based on this, the superimposed effect of multiple reaction and distillation streams at different source-sink properties and in different locations can be investigated, the variation of utility consumption along the uncertain parameter of the source-sink streams can be revealed. Furthermore, the method for identifying the reaction and distillation stream's effect on the energy consumption and pinch, and that for integrating the reaction, distillation and heat exchanger network can be established.. Based on the simulation by PetroSIM software, this project aims to determine the relationship between reaction and distillation related streams and the reaction and distillation parameters of the Catalytic-cracker unit, and to explore the impact law the reaction and distillation parameters on the heating and cooling utilities' consumption. Considering the minimum utility consumption of the catalyst activity cycle, the energy systems integration solutions and strategies will be established for different Catalytic-cracking units.

催化裂化是重油轻质化和原油二次加工的重要手段，其反应/精馏设计和操作决定换热网络的源阱、影响换热网络的匹配和能耗。为设计最优催化裂化过程，应同步集成其反应、精馏、换热网络和公用工程。. 本项目拟基于严格的代数推理和图像分析，建立考虑不确定源阱的换热网络集成方法，以在换热网络的集成中考虑反应和精馏不确定性导致的源阱流量、组成和温度的改变；探讨反应和精馏相关的多流股在不同源阱属性和不同位置时的叠加效应，揭示公用工程随不确定源阱参数的变化规律，建立反应和精馏流股对系统能耗和夹点影响的辨识方法，以及反应、精馏和换热网络的同步集成方法；基于PetroSIM模拟确定催化裂化装置反应和精馏相关流股与各反应和精馏参数的关系，探讨反应和精馏参数对催化裂化装置加热和冷却公用工程消耗的影响规律，综合考虑催化剂活性衰减和活性周期内的公用工程消耗，建立不同催化裂化装置能量系统的集成方案和策略。

本项目基于严格的代数推理和图像分析，建立了考虑不确定源阱的换热网络集成方法，可以在换热网络的集成中考虑反应和精馏不确定性导致的源阱流量、组成和温度的改变；考虑反应动力学和热力学，探讨了反应和精馏相关的多流股在不同源阱属性和不同位置（夹点上、夹点下和跨越夹点）时的叠加效应，揭示了公用工程随不确定源阱参数的变化规律，建立了反应和精馏流股对系统能耗和夹点影响的辨识方法；考虑循环流股的流量变化，提出了反应-精馏-换热网络-循环流股的同步集成优化方法。. 基于PetroSIM模拟确定了催化裂化装置反应和精馏相关流股与各反应和精馏参数的关系，探讨了反应和精馏参数对催化裂化装置加热和冷却公用工程消耗的影响规律，综合考虑催化剂活性衰减和活性周期内的公用工程消耗，建立催化裂化装置能量系统的集成方案和策略。