Simulation method and simulation system for MX oxidation process optimization
A technology of oxidation process and simulation method, which is applied in the field of simulation method and simulation system for MX oxidation process optimization, can solve the problems of no visualization, inability to realize production process visualization, difficulty in optimization of isophthalic acid operating conditions, etc., to ensure accuracy , Realize the effect of visual production
Pending Publication Date: 2021-06-15
BC P INC CHINA NAT PETROLEUM CORP +1
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[0005] However, although there are industrial simulation systems such as Aspen plus, the underlying optimization logic adapted to the existing simulation system and its relationship with the reaction system are different from those of the MX oxidation device, so it cannot be directly applied to the simulation of the MX oxidation process. There is no simulation method and simulation system for the optimization of operating conditions in the MX oxidation unit and the visualization of the production process, which makes it difficult to optimize the operating conditions in the industrial production of isophthalic acid and cannot realize the visualization of the production process.
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[0039] The MX oxidation process includes multiple processes, and the process equipment used in the process usually includes a preheater, an oxidation reactor, a dehydration tower, a condensation system, a tail gas absorption tower, and an air compression unit. The preheater is mainly used to heat the raw material; the oxidation reactor is the core of the whole process, in which MX and air are oxidized to generate isophthalic acid; the dehydration tower is used to remove the water generated in the oxidation reaction; the condensing system is used for The tail gas is cooled to recover part of the energy; the tail gas absorption tower is mainly used to spray the cooled tail gas with water to form a dilute acid solution; the air compression unit is used to enter the air into the oxidation reactor for the main reaction.
[0040] see figure 1 , the invention discloses a simulation method for optimizing the MX oxidation process, comprising the following steps:
[0041] S1: Generate ...
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The invention relates to a simulation method and a simulation system for MX oxidation process optimization, the simulation method comprises the steps of generating a simulation file for simulating an MX oxidation process and running the simulation file, wherein the step of generating the simulation file sequentially comprises the steps of selecting a physical property model, correcting parameters and optimizing operation conditions. The corrected parameters comprise binary interaction parameters between MX and HAC, between MX and CO2 and between MX and O2, and the optimized operation conditions comprise the reaction temperature in the oxidation reactor, the mass flow ratio of HAC to MX and the mass flow ratio of air to MX. The simulation system comprises a simulation file generation module and a simulation file operation module, wherein the simulation file generation module comprises a physical property model selection unit, a parameter correction unit and an operation condition optimization unit. By adopting the method to simulate the oxidation process of MX, the optimal operation condition of the production process can be quickly found, and theoretical guidance is provided for industrial production of isophthalic acid.
Description
technical field [0001] The invention relates to a simulation method and a simulation system in a chemical production process, in particular to a simulation method and a simulation system for optimizing an MX oxidation process. Background technique [0002] The m-xylene (MX) oxidation device is a very important device in the production process of isophthalic acid. The optimization and visualization of its operation are directly related to product quality, product yield and energy consumption. It is very important for enterprises to improve their own operational efficiency and competitiveness. [0003] At present, in the entire production process of MX oxidation, on the premise of ensuring product quality, if the operating conditions of each device can be optimized and the utilization rate of raw materials in each device can be maximized, this will greatly improve the overall production efficiency. At the same time, during the entire production process, real-time observation ...
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Login to View More IPC IPC(8): G16C20/10G16C20/70G16C20/80G06Q10/04G06Q50/04
CPCG16C20/10G16C20/70G16C20/80G06Q10/04G06Q50/04Y02P90/30
Inventor 刘晓玲李红坤孙爱军王新兰崔国刚殷璎孙伟振赵玲
Owner BC P INC CHINA NAT PETROLEUM CORP