Internal Thermally Coupled Distillation Column Control Device Based on Temperature Wave Characteristics

An internal thermal coupling and control device technology, applied in the direction of distillation adjustment/control, fractionation, etc., can solve the problems of low online operation efficiency, low sensitivity to noise, poor control effect, etc.

CN104587695BInactive Publication Date: 2015-08-05CHINA UNIV OF PETROLEUM (EAST CHINA)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2015-08-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an internal thermally coupled rectification tower control device based on temperature wave characteristics, including an internal thermally coupled rectification tower, an intelligent instrument, a control station, a data storage device and a host computer, an intelligent instrument and an internal thermally coupled rectification tower Connection, the control station is connected with the internal thermally coupled rectification tower, the data storage device is connected with the intelligent instrument and the control station, the host computer is connected with the data storage device and the control station, and the host computer includes a concentration gradient description module, a temperature gradient description module, a temperature wave Static description module, temperature fluctuation dynamic description module, set value conversion module and control parameter solving module. The nonlinear control scheme of the present invention is based on a high-precision nonlinear model, which can suppress the interference in time; handles the coupling problem well, and can quickly and accurately track the change of the set value; with high measurement accuracy and small measurement delay Temperature is the main control method, which greatly improves the control speed and control performance.
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Description

technical field

[0001] The invention belongs to the field of nonlinear control in rectification and energy-saving process, and in particular relates to an internal heat coupling rectification tower control device based on temperature wave characteristics. Background technique

[0002] The energy consumption of the distillation process accounts for 20% of the total energy consumption of the national economy and 67% of the petrochemical industry. It is a unit operation widely used in petroleum, chemical, metallurgy, coal chemical and other industries, and is closely related to many pillar industries of my country's national economy. However, the energy utilization rate of the rectification process is extremely low, only 5%-10%, which seriously restricts the economic development.

[0003] The internal thermal coupling rectification technology makes full use of the heat exchange between the rectification section and the stripping section, saving energy by more than 30% compared ...

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Embodiment Construction

[0060] The present invention will be further described below in conjunction with accompanying drawing.

[0061] Such as figure 1 and figure 2 As shown, an internal thermally coupled rectification tower control device based on temperature wave characteristics includes an internal thermally coupled rectification tower 1, an intelligent instrument 2, a control station 3, a data storage device 4, and a host computer 5. The intelligent instrument 2 is connected to the internal thermally coupled rectification tower 1 for data collection; the control station 3 is connected to the internal thermally coupled rectification tower 1 for controlling the internal thermally coupled rectification tower 1; The data storage device 4 is connected with the smart meter 2 and the control station 3 for realizing data storage; the host computer 5 is connected with the data storage device 4 and the control station 3 for realizing control For the solution of parameters, the upper computer 5 includes...