Multi-layer liquid distribution device and method of falling-film-type reboiler

A liquid distribution device and liquid distribution technology, applied in the direction of separation methods, chemical instruments and methods, evaporator accessories, etc., can solve problems such as unstable working performance, dry wall of falling film tube, difficult to effectively fix, etc., to avoid liquid distribution Effects of unevenness, contamination avoidance, and resistance reduction

Active Publication Date: 2020-11-24
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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  • Multi-layer liquid distribution device and method of falling-film-type reboiler
  • Multi-layer liquid distribution device and method of falling-film-type reboiler
  • Multi-layer liquid distribution device and method of falling-film-type reboiler

Examples

Experimental program
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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 and 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 pip...

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-type reboiler. The multi-layer liquid distribution device comprises a first-layer liquid distribution mechanism and asecond-layer liquid distribution mechanism, wherein the first-layer liquid distribution mechanism comprises a first cylindrical shell body, an upper cover plate and a liquid inlet pipe. According tothe multi-layer liquid distribution device, the uniformity of the liquid supplied to the falling-film-type reboiler can be ensured to be good; liquid in a liquid supply system can be prevented from being polluted, the bad phenomenon of liquid leakage at the joint of the device and the falling-film-type reboiler can be effectively prevented, more importantly, the situation that the liquid distribution is uneven, bias current is generated, a falling film pipe is prone to coking, and even the bad phenomenon of dry wall of local falling film pipe occurs can be avoided, the defect that a traditional liquid distributor is prone to scale formation and blockage can be overcome, the purpose that liquid with good uniformity quickly enters the falling-film-type reboiler can be achieved, the work efficiency is effectively improved, installation is convenient, effective fixing can be achieved, and therefore it is guaranteed that work performance is stable.

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 Applications(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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