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Multilayer liquid distribution device and method for falling film reboiler

A liquid distribution device and liquid distribution technology, applied in separation methods, chemical instruments and methods, evaporator accessories, etc., can solve the problems of dry wall of falling film tube, difficult to fix effectively, unstable working performance, etc., to reduce resistance, Good uniformity and avoid uneven distribution of liquid

Active Publication Date: 2021-06-11
WUXI CHEM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing falling film reboilers use traditional liquid distributors, mainly including tooth shape, diversion pipe shape, spiral groove diversion pipe shape and single disc shape, among which disc distributors are the most widely used, and their The disadvantage is that it is easy to scale and block, resulting in uneven distribution of feed and liquid, resulting in partial flow, easy coking of falling film tubes, and even partial dry walls of falling film tubes; secondly, the traditional liquid distributor is the supply of falling film reboiler. The liquid speed is slow, resulting in low work efficiency; in addition, the traditional liquid distributor is inconvenient to install and difficult to fix effectively, resulting in unstable work performance

Method used

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  • Multilayer liquid distribution device and method for falling film reboiler
  • Multilayer liquid distribution device and method for falling film reboiler
  • Multilayer liquid distribution device and method for falling film reboiler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A multi-layer liquid distribution device for a falling film reboiler, such as figure 1 As shown, it includes the first layer of liquid distribution mechanism 1 and the second layer of liquid distribution mechanism 2;

[0042] Among them, such as figure 1 with 3 As shown, the first layer of liquid distribution mechanism 1 includes a first cylindrical shell 101, an upper cover plate 102 and a liquid inlet pipe 105, the bottom of the first cylindrical shell 101 is a closed structure, and the first The upper part of a cylindrical shell 101 is an open structure, and the bottom wall of the first cylindrical shell 101 is uniformly provided with a plurality of first evenly distributed holes 103, and the outside of the first cylindrical shell 101 is adjacent to it. The first annular fitting seat 104 is fixedly installed on the upper part, the upper cover plate 102 is fixedly and sealingly installed on the upper part of the first cylindrical housing 101, and the liquid inlet pi...

Embodiment 2

[0050] Such as Figure 3-4 As shown in and 6-8, the difference between this embodiment and Embodiment 1 is that it also includes an anti-sticking wall mechanism 3, and the anti-sticking wall mechanism 3 includes a protective cover 302, a motor 301, a rotating shaft 303 and a scraper 304 , the protective cover 302 is fixedly and sealingly installed at the upper center of the inner bottom wall of the first cylindrical housing 101, the motor 301 is fixedly installed inside the protective cover 302, and the rotating The shaft 303 is installed vertically and fixedly at the center of the bottom wall of the first cylindrical housing 101 through a sealed bearing, and the upper end of the rotating shaft 303 is fixedly connected with the rotating shaft of the motor 301 through a coupling , the scraper 304 is provided with three, and the scraper 304 is fixedly installed on the side of the rotating shaft 303, and the three scraping boards 304 are arranged around the rotating shaft 303 in ...

Embodiment 3

[0053] Such as Figure 1-3 As shown in and 9, the difference between this embodiment and Embodiment 2 is that it also includes a pressurizing mechanism 5, which includes a fan 501, a cylindrical casing 502, an air filter element 503 and a cover 504, the The fan 501 is fixedly installed on the upper part of the upper cover plate 102 through the fixing seat 507, and the air outlet of the fan 501 communicates with the inside of the first cylindrical shell 101 through a pipe 508, and the cylindrical shell 502 is fixedly installed at the air inlet of the fan 501, and the end of the cylindrical shell 502 away from the fan 501 is an open end, and the air filter element 503 is packaged in the cylindrical housing 503 through the cover 504 Inside the casing 502, the cover 504 is screwed on the open end of the cylindrical casing 502, and several ventilation holes 505 are evenly opened on the cover 504, and the outer surface of the cover 504 A hexagonal slot 506 is also reserved at the c...

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Abstract

The invention discloses a multi-layer liquid distribution device of a falling film reboiler, which comprises a first-layer liquid distribution mechanism and a second-layer liquid distribution mechanism; the first-layer liquid distribution mechanism includes a first cylindrical shell and an upper cover plate and inlet tube. The present invention can ensure that the uniformity of the liquid supplied to the falling film reboiler is better, can avoid the liquid inside the liquid supply system from being polluted, and can effectively prevent leakage at the connection between the device and the falling film reboiler. It is especially important to avoid uneven distribution of liquid, resulting in partial flow, causing the falling film tube to coke easily, and even the occurrence of local dry wall of the falling film tube, which can make up for the traditional liquid distributor itself that is easy to scale and The disadvantage of clogging can achieve the purpose of quickly entering the falling film reboiler with better uniformity of liquid, effectively improve work efficiency, facilitate installation, and be able to be effectively fixed, so as to ensure relatively stable work performance.

Description

technical field [0001] The invention relates to the technical field of chemical production, more specifically, it relates to a multilayer liquid distribution device and method for a falling film reboiler. Background technique [0002] The falling film reboiler can evaporate heat-sensitive materials and solutions with high concentration or viscosity, and is widely used in chemical industry, medicine, metallurgy, printing and dyeing, military industry, seawater desalination and other fields. The falling film reboiler has the advantages of short material evaporation time, high evaporation capacity, energy saving, low operating cost, not easy to scale, easy to clean and can ensure that the material does not change during the evaporation process. In order to prevent the "dry wall" phenomenon from affecting its heat transfer, a liquid distribution device must be designed in the falling film reboiler. The function of the liquid distributor is to distribute the material evenly into ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D1/22B01D1/30
CPCB01D1/22B01D1/30
Inventor 曹洪海王学生陈琴珠刘建书杨湖徐泽辉
Owner WUXI CHEM EQUIP CO LTD
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