Dividing wall column and dividing-wall rectification method

A technology of dividing wall column and rectification section, which is applied in the field of dividing wall column and dividing wall rectification, can solve the problems such as the inability to achieve the lowest energy consumption on both sides of the partition and the inability to adjust the clarity of the dividing wall column.

Active Publication Date: 2020-07-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] Aiming at the problem that the clarity cannot be adjusted in the current dividing wall tower and the gas-liquid ratio on both sides of the partition often cannot reach the lowest energy consumption, the present invention provides a dividing wall tower and a rectifying method for the dividing wall

Method used

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  • Dividing wall column and dividing-wall rectification method
  • Dividing wall column and dividing-wall rectification method
  • Dividing wall column and dividing-wall rectification method

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Embodiment Construction

[0051] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

[0052] In the description of the present invention, it should be noted that, unless otherwise specified, the meaning of "several" is one or more, and the meaning of "plurality" is two or more; the terms "upper" and "lower" , "inner", "outer", "top", "bottom" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or It should not be construed as limiting the invention by implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particu...

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Abstract

The invention discloses a dividing wall column. The dividing wall column comprises a liquid-phase backflow distributor, a gas-phase adjusting assembly and a liquid-phase redistributor, wherein the gas-phase adjusting assembly intervenes in the gas-liquid mass transfer strength by changing the sectional areas of gas-phase flow channels on two sides of a partition plate, fractionation definition adjustment can be achieved, then gas-liquid transfer is limited, and heat load adjustment and product definition adjustment are achieved. The dividing wall column provided by the invention has the effects of flexibly adjusting the definition of fractionated products and saving energy consumption.

Description

technical field [0001] The invention belongs to the technical field of rectification and separation of chemical engineering, and in particular relates to a dividing wall tower and a dividing wall rectification method. Background technique [0002] Distillation technology is widely used in petrochemical, light industry, pharmaceutical and other industries. It is the main operating unit device for the separation of mixtures in chemical plants and the main technical means for product separation and purification. At present, the energy consumption of the rectification process accounts for about It accounts for more than 20% of the total energy consumption in the production process and is a major energy consumer in the refinery. [0003] At present, the distillation process in refineries and chemical plants mainly uses traditional towers to separate materials. In theory, to obtain N products, N-1 rectification towers need to be built. Although product purity can be required, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/14B01D3/32B01D3/42
CPCB01D3/141B01D3/143B01D3/32B01D3/4205
Inventor 王璐瑶薄德臣张英陈建兵高明李明一
Owner CHINA PETROLEUM & CHEM CORP
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