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Multi-overflow circle tower plate

A multi-overflow, annular technology, applied in fractionation and other directions, to achieve the effect of reducing equipment cost, reducing pressure drop, and improving tray efficiency

Active Publication Date: 2009-06-03
HANGZHOU HANGYANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is a pity that most of the research developers do not fully explain it theoretically, but in fact it is such a small improvement that the liquid flow on the tray is close to the plug flow, resulting in the tray efficiency synergy factor ζ

Method used

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Examples

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Effect test

Embodiment 1

[0052] Example 1, air separation plant model KOD-900 type high-purity nitrogen equipment medium nitrogen tower, the design parameters of the tower: the number of overflows is 2, the diameter of the tower body is 600mm, the diameter of the central support tube is 200mm, and the theoretical plate is 43 The actual tray is 60; the test run report shows that the composition of nitrogen at the 50th actual tray has reached the design value, the total pressure drop of the tower is basically consistent with the design value, and the tower can still operate stably under the working condition of 34%. That is to say, compared with the conventional design, the efficiency of the whole tower is increased by 20%, the pressure of each theoretical plate is reduced by 20%, and the ability to adjust the load can reach 34% of the working condition.

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Abstract

The invention provides a multi-overflow circle tower plate, comprising at least a circle tower disc. The center of the circle tower disc is provided with a central supporting pipe which forms a circle tower disc; the circle tower disc is equally divided into sector blocks according to the overflow number; each sector block is divided into three blocks: a liquid receiving disc, a sector tower disc and a liquid falling area; the liquid falling area of the next layer of tower plate is arranged right below the liquid falling area of the circle tower disc; the liquid falling area is connected with the liquid receiving disc of the lower layer of tower plate by a slope; a circle liquid communicating vessel is arranged in the middle of the central supporting pipe of the circle tower disc; the bottom surface of the communication vessel is aligned to the bottom surface of the liquid receiving disc, the top surface thereof is about 50mm higher than the maximum liquid level of the liquid receiving disc, and the external side surface is communicated with the liquid falling pipe. The multi-overflow circle tower plate has the advantages of improving the tower plate efficiency, reducing the pressure reduction of the tower plate, reducing the separation energy dissipation, shortening the dimension of distillation column, reducing the cost of equipment, meeting the high requirement on separation performance of the tower plate during the modernized separation process, and the like.

Description

field of invention [0001] The invention relates to a tray plate, which is a core component of a plate rectification tower, and belongs to the technical field of vapor-liquid separation devices. Background technique [0002] In the production of work in the petrochemical field, the rectification operation significantly affects the energy consumption of the petrochemical industry. For example, in 1989, about 40,000 rectification towers in the United States accounted for 41.2% of the total energy consumption in the petrochemical industry and 2.99% of the total energy consumption in the country. In the rectification tower, the plate rectification tower accounts for a large proportion, so a small increase in the efficiency of the plate rectification tower can produce huge economic benefits. The current research on distillation mainly includes two aspects: simulation of distillation process and design of distillation equipment. The main task of distillation simulation is to theo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/16
Inventor 顾燕新唐清建
Owner HANGZHOU HANGYANG
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