Optimization method of low-temperature thermal system

Abstract

The invention relates to an optimization method of a low-temperature thermal system. The optimization method comprises the following steps: establishing a mathematical mechanism model of the low-temperature thermal system; establishing an optimization model of the low-temperature thermal system by utilizing a simultaneous module method; and solving the optimization model of the low-temperature thermal system by using a constrained variable-scale method WHP. According to the method, the solution speed of the constrained multivariable chemical industry low-temperature thermal system model optimization problem is greatly increased. The problem that an existing mathematical solution model cannot quickly and accurately simulate and optimize a low-temperature thermal system is well solved, an optimization scheme generated based on the method better conforms to the reality of enterprises, and the energy-saving effect is more remarkable.

Description

technical field [0001] The invention belongs to the petrochemical field, and in particular relates to an optimization method for a low-temperature thermal system. Background technique [0002] The rapid development of the global economy, the growth of population, and the continuous increase in energy consumption have created a tense energy situation. In the face of the gradually depleted primary energy (coal, oil, natural gas, nuclear energy), no reasonable substitute has been found at this stage. Therefore, developing new energy and improving the utilization rate of primary energy is one of the ways to solve the current energy crisis. However, there are still many problems in the utilization of new energy sources such as solar energy, geothermal energy, nuclear energy, biomass energy, and wind energy that have not been effectively resolved, and it is difficult to undertake the heavy responsibility of alternative energy sources. Therefore, improving the utilization rate of ...

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Problems solved by technology

However, the sequential module method to solve the complex process model needs to continuously cut off the recirculation stream to reduce the order, the solution speed is slow, and there is a certain gap between the calculation results and the actual site, and the solution speed and accuracy are far from meeting the complex and changeable actual operating conditions of the low-temperature thermal system.

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