Fractionating tower top pressure control method and device based on air pressure unit

A pressure control and fractionation tower technology, applied in distillation regulation/control, fractionation and other directions, can solve problems such as difficult operation, energy waste, explosion accidents, etc., and achieve the effects of improving production efficiency, responding in time, and reducing the incidence of explosion accidents.

Pending Publication Date: 2022-08-09
梅胜
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Problems solved by technology

[0003] The embodiment of this specification provides a method and device for controlling the top pressure of a fractionation tower based on a pneumatic unit, which is used to solve the problem that the control of the pneumatic unit in the catalytic device and the coking unit in the prior art is basically manually adjusted, which is difficult to operate and easily causes Problems of Unit Surge, Energy Waste and Explosion Accidents

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  • Fractionating tower top pressure control method and device based on air pressure unit
  • Fractionating tower top pressure control method and device based on air pressure unit
  • Fractionating tower top pressure control method and device based on air pressure unit

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Embodiment Construction

[0056]In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0057] The technical solutions provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0058] figure 1 This is a schematic flow chart of a method for controlling the top pressure of a fractionation column based on a pneumatic unit provided in the embodiment of the p...

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Abstract

The invention discloses a fractionating tower top pressure control method and device based on a gas pressure unit, which are used for reducing the pressure of a fractionating tower, and the method comprises the following steps: judging whether a surge working point is in a safe area, and if yes, closing an anti-surge valve; and in the process of closing the anti-surge valve, adjusting the speed of the air pressure unit or/and the anti-surge valve, so that the top pressure of the fractionating tower meets a set value. The method is used for solving the problems of unit surge, energy waste and explosion accidents easily caused by high operation difficulty due to the fact that air pressure units in a catalytic device and a coking device are basically controlled by manual adjustment in the prior art. Unattended operation and full-automatic intelligent operation of a gas pressure unit are realized, the production efficiency of the device is improved, the occurrence rate of serious explosion accidents is reduced, the top pressure of a fractionating tower is accurately controlled, the liquefaction rate of products is improved, and full-automatic intelligent control of a large-scale unit is realized.

Description

technical field [0001] The application relates to the technical field of pneumatic units, and in particular, to a method and device for controlling the top pressure of a fractionation tower based on a pneumatic unit. Background technique [0002] At present, the control of the air pressure unit in the catalytic unit and the coking unit is basically manual adjustment of the unit speed and anti-surge valve. The catalytic unit requires a lot of operating intensity during the start-up process to ensure the stability of the top pressure of the fractionation tower. At the same time, the coking unit is a gap It is necessary to perform a cutting tower replacement in 16 to 36 hours, starting from the preheating of the new tower, starting to adjust the unit load, and then after a few hours, starting to cut the tower, then the operator needs to adjust the unit load again. Finally, after 1 hour, the old tower is vented, and the operator needs to adjust the load of the unit again. If the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/42B01D3/14B01D3/32
CPCB01D3/42B01D3/14B01D3/32
Inventor 梅胜石芸
Owner 梅胜
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