General model connecting system of air separation tower and method thereof

Abstract

A general mode control system of space dividing tower comprises an on-site intelligent device connected with the space dividing tower, a data storage device for storing history data, and a superior machine, wherein the intelligent device, data storage device and superior are serially connected, the superior machine is general mode controller comprising a component controller and a general mode controller. The component controller comprises a checking module, an I / O module, and a component analyzing module. The general mode controller comprises an I / O module, a secondary curvature simulating module, a general mode controlling calculating module and a control output module. The invention also provides a relative control method. The invention can be applicable for the dynamic, non-liner and couple properties of space dividing operation, to obtain better control effect.

Description

(1) Technical field

[0001] The invention relates to the field of control system and method design of an air separation tower, in particular, to a general model control system and method of an air separation tower. (2) Background technology

[0002] The air separation plant is a device that separates the air and obtains high-purity industrial gases such as oxygen, nitrogen, and argon. It is a supporting unit operation of many industries related to the lifeline of the national economy, such as chemical industry, metallurgy, electronics, energy, aerospace, food and beverage, etc. An important indicator of the level of development.

[0003] Air separation operation is a complex process involving low temperature, multi-equipment, long process, complex operation and high safety production requirements. In production, the purity of oxygen, nitrogen, and argon products is often required to be as high as 99%, which belongs to the problem of high-purity rectification control. Compl...

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