An Online Observer Based on Concentration Curve Characteristics for Internal Thermally Coupled Air Separation Tower
An internal thermal coupling, concentration curve technology, applied in instruments, measuring devices, comprehensive factory control, etc., can solve the problems of inability to effectively track the complex nonlinear dynamic characteristics of the air separation process, low online operation efficiency, and low accuracy.
Inactive Publication Date: 2019-11-26
ZHEJIANG UNIV
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[0004] In order to overcome the deficiencies that the existing observation system of the internal thermally coupled air separation process cannot effectively track the complex nonlinear dynamic characteristics of the air separation process, the online operation efficiency is low, and the accuracy is low, the present invention provides a system that can effectively track the internal thermally coupled air separation process. The complex nonlinear dynamic characteristics of the process, high online operation efficiency, high accuracy, internal thermally coupled air separation online observer based on the concentration curve characteristics
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[0045] The present invention will be described in detail below based on the drawings.
[0046] Reference figure 1 with figure 2 , An on-line observer for the internal thermally coupled air separation tower based on the characteristics of the concentration curve, including a smart meter 2 directly connected to the internal thermally coupled air separation tower 1 and a DCS system. The DCS system includes an upper computer observer 6, a control station 5, a storage device 4, a field bus 7 and a data interface 3. The storage device 4, a control station 5 and an upper computer observer 6 are connected to the data interface 3 through the field bus 7 . The smart meter 2 measures related parameters through a temperature detection element, a pressure detection element, and a flow detection element, and is connected to the data interface 3. The host computer observer realizes the online observation function to predict the concentration distribution of the internal thermal coupling air...
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The invention discloses an internal thermal coupling air separation tower online observer based on concentration curve characteristics; the online observer comprises an intelligent meter and a DCS system directly connected with the internal thermal coupling air separation tower; the DCS system comprises a host observer, a control station, a storage device, a field bus, and a data interface; the storage device, the control station and the host observer are connected with the data interface through the field bus; the intelligent meter measures related parameters through a temperature detection element, a pressure detection element, and a flow rate detection element, and is connected with the data interface. The host observer can realize the online observation function, can predict the stateof the internal thermal coupling air separation tower at a future moment, and comprises a concentration curve static state description module, a concentration curve dynamic description module, and a future moment internal thermal coupling air separation tower state prediction module. The online observer can well process the strong non-linear characteristics of the internal thermal coupling air separation tower, and is fast in online operation speed, thus providing highly efficient and accurate dynamic observation effects.
Description
Technical field [0001] The invention relates to the field of dynamic modeling of industrial energy-saving control, in particular, to the design of an online observer for an internal thermally coupled air separation process. Background technique [0002] The air separation device is a device that separates air and obtains high-purity industrial gases such as oxygen, nitrogen, argon, etc. It is widely used in petroleum, chemical industry, metallurgy, electronics, energy, aerospace, food and beverage, medical care, etc. Industrial field. The resulting oxygen, nitrogen and argon products are widely used in a country's national economy. Since the two "oil crises" in the 1970s, the energy crisis has deepened, and there has been a strong demand for effective use of energy in many fields. In the energy-intensive air separation industry, energy costs account for 75% of the price of air products. Therefore, such a situation arises. On the one hand, due to the development of modern indus...
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IPC IPC(8): G05B19/418G01D21/02
CPCG01D21/02G05B19/4183G05B19/4186Y02P90/02
Inventor 刘兴高王之宇
Owner ZHEJIANG UNIV