Solving Multi-component Mass Exchange Network Using Line-up Competition Algorithm

With the rapid development of modern economy, people are increasingly aware of energy-saving and emission-reduction as well as low carbon economy which has become the precondition of sustainable development of society, however as one of the most important technical means to realize energy saving and waste emission reduction, mass integration can not only improve the efficiency of resource, but also reduce environmental pollution.As an important technology to realize mass integration, mass exchange network synthesis(MENs) has already attracted wide public concern. Now many researchers at home and abroad have made a lot of research related. Here the several representative method are as followes, methods based on superstructure;state space method. Studies have shown that the methods based on superstructure was considered to be the most promising, whose general steps are as follows, first a superstructure which includes all the possible matchings between rich and loan streams is constructed. Second, a mixed integer nonlinear programing model based on the superstructure is established. Third, an optimization algorithm is choosed to solve the mathematical model established above. Apparently constructing a simple superstructure and solving the model based on the superstructure with a suitable global optimization algorithm are critical, because it can not only reduce searching space for great searching efficiency, but also helps to improve the quality of the results.Until now people have not found a superstructure approved universally yet, as well as matched global optimization searching algorithm, therefore not only in theory, but also in fact, it is very important to study mass exchange network synthesis based on superstructure, especially the multi-MEN synthesis.In this paper, we proposed a new and simple statement for superstructure, which combined interval with non-split superstructure, and established the corresponding MINLP model, then we study LCA(line-up competition algorithm), as well as the the solution strategies of line-up competition algorithm for solving mass exchange network, finally we solved single component MEN and multi-MEAs MEN to verify the method mentioned above.The key problems addressed in the thesis are as follows.(1) We propose a new and simple statement for MENs after much research and analysis on thesis related, and the superstructure contains all the possible match between rich and loan streams.(2) Based on the new statement about superstructure mentioned above, we established the mathematical model with the overall objective function that is comprised of the costs of external MSAs, as well as the costs of the mass exchangers.(3) A short introduction of line-up competition algorithm was made, as well as the related study on solution strategies of line-up competition algorithm for solving the mass exchange network.(4) The single component MENs is studied. A typical example of single component MEN is solved with optimal network in this paper to verify the feasibility and effective of the statement proposed in this paper.(5) The multi-component MENs is studied. While the method is successfully used to solve single component MEN, we decide to go on our research on multi-MSAs MEN, and then to verify the effectiveness a typical example is solved with the optimal network.