A Generalized Modeling Method for Simulation of Dynamic Characteristics of Wet Desulfurization Tower
A dynamic characteristic and wet desulfurization technology, which is applied in the field of simulation modeling, can solve problems such as the difficulty of generalizing the simulation model of the dynamic characteristics of the desulfurization tower
Active Publication Date: 2019-03-12
SOUTHEAST UNIV
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a generalized modeling method for the simulation of the dynamic characteristics of the wet desulfurization tower to solve the problem in the prior art that it is difficult to establish a generalized model for the simulation of the dynamic characteristics of the desulfurization tower
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Embodiment 1
[0053] Model assumptions: For the convenience of calculation, the following assumptions are made on the mathematical model based on the operation process and theoretical analysis of the desulfurization tower: SO in the flue gas 2 The mass transfer rate with the absorption liquid is controlled by the gas film and the liquid film; the entire chemical reaction is completed in the liquid film; the droplets on any interface of the desulfurization tower are evenly distributed and the same size, and the droplets remain spherical during the falling process; the desulfurization tower The two phases of gas and liquid in the interior are one-dimensional flow; the ionization of the liquid droplets and the material under the liquid level of the desulfurization tower is completed instantaneously; the mixing of the material under the liquid level is completed instantaneously.
[0054] Desulfurization tower absorption reaction model: This model simulates two wet desulfurization modes, namely a...
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The invention discloses a generalized simulation modeling method of a desulfurizing tower with dynamic characteristics. By researching and analyzing technological designs and reaction processes of desulfurizing towers in different flue gas desulfurization systems, a generalized mathematical model is set up for the desulfurizing tower with dynamic characteristics by utilizing a wet ammonia process and a limestone-plaster wet process.In a model for the desulfurizing tower, simulation of two desulphurization methods can be easily switched and independently operated in order to satisfy the simulation need of different desulphurization processes. Compared with a signal method, the desulphurization model is more practical.Compared with the prior art, the generalized simulation modeling method of desulfurizing tower with dynamic characteristics has following beneficial effects: based on the modularization modeling method of a control body, the overall dynamic process of the desulfurizing tower can be simulated. Dynamic parameters such as in-vivo temperature, pressure, pH value, SO2 concentration and desulfurization rate can be calculated.The generalized simulation modeling method of the desulfurizing tower with dynamic characteristics has following beneficial effects: by using the desulfurization tower in a thermal power plant as a simulation object, dynamic simulation tests are conducted to the model; dynamic characteristics of the object can be simulated by a simulation operation result; accuracy and generality of the model can be proved; and the model can be used for simulation and development of a wet flue gas desulfurization system.
Description
technical field [0001] The invention belongs to the technical field of simulation modeling, and in particular relates to a generalized modeling method for simulation of dynamic characteristics of a wet desulfurization tower. Background technique [0002] With today's air pollution becoming more and more serious, the concept of environmental protection has been deeply rooted in the hearts of the people. The state has continuously strengthened the control of air pollution, especially the strict requirements on the discharge of pollutants from coal-fired power plants. The power industry is the main body of coal combustion, and the soot-type pollution caused by coal combustion is still the largest pollution source of sulfur dioxide, nitrogen oxides and dust in my country. Coal-fired power stations are still the focus and leading industry of desulfurization. Desulfurization systems are generally installed in current thermal power units to meet the country's SO requirements for t...
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IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 王永文冷伟
Owner SOUTHEAST UNIV
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