Three-grade-film-falling distribution heater

A heater and distributed technology, applied in the field of mechanical equipment, can solve problems such as unevenness, easy coking of feed liquid, dry wall, uneven film distribution, etc., achieve uniform film distribution, wide application range, and improve evaporation efficiency

Inactive Publication Date: 2015-11-11
ZHEJIANG SUNNY MACHINERY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heater (falling film type) has the problems of uneven film distribution, easy coking and dry wall of the feed liquid, and the inlet of the heating tube (that is, the feed nozzle) is on the same level as the tube sheet, and there is a weld and a The unevenness of the weld scar makes the liquid distribution on the inner wall of the heating tube uneven

Method used

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Embodiment Construction

[0009] refer to figure 1 , figure 2 It can be seen that the three-stage falling film distributed heater of the present invention includes a heater cylinder 21, a heating tube 22, and a tube plate 23, and a primary distribution nozzle 27 is installed in the top of the heater cylinder 21. Inside the cylinder 21, a secondary distribution plate 26 is installed between the primary distribution nozzle 27 and the tube plate 23. The inlet of the heating pipe 22 protrudes above the tube plate 23 and has a zigzag overflow port 29 (a three-level distribution method), thus forming a three-level distribution structure. The secondary distribution plate 26 has several distribution holes 28 , and a support rod 24 is installed between the secondary distribution plate 26 and the tube plate 23 .

[0010] In the three-stage falling film distributed heater, the first-stage distribution method is the (shower-like) first-stage distribution nozzle, and the materials entering the heater are sprayed...

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Abstract

The invention discloses a three-grade-film-falling distribution heater. The three-grade-film-falling distribution heater comprises a heater cylinder (21), heating tubes (22) and a tube plate (23). A first-grade distribution spraying head (27) is installed in the top of the heater cylinder (21). A second-grade distribution disc (26) is installed at the portion, in the heater cylinder (21), between the first-grade distribution spraying head (27) and the tube plate (23). Tube openings of the heating tubes (22) extend to the portion above the tube plate (23) and are provided with sawtooth-shaped overflowing openings (29). According to the three-grade-film-falling distribution heater, due to a three-grade-film-falling distribution mode, material film-type distributing is even, film-type flowing evaporation of materials is formed in the heating tubes, the aim that coking and walling drying of the heating tubes are avoided is achieved, and the effect of improving the heating efficiency of the heater is achieved.

Description

technical field [0001] The invention relates to the field of mechanical equipment, in particular to a heater for evaporators used in pharmaceutical, food, chemical, environmental protection and other industries. Background technique [0002] At present, the mechanical vapor recompression (MVR for short) evaporator is to reuse the principle of secondary steam heating to maintain the boiling state of the feed liquid in the evaporator system and increase the concentration of the feed liquid to meet the technical requirements. It includes feed pumps, condensation Water pumps, discharge pumps, vacuum pumps, heaters, separators, compressors. The heater (falling film type) has the problems of uneven film distribution, easy coking and dry wall of the feed liquid, and the inlet of the heating tube (that is, the feed nozzle) is on the same level as the tube sheet, and there is a weld and a The unevenness of the weld scar makes the liquid distribution on the inner wall of the heating ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D1/22
Inventor 何小创黄宗玉郑礼荣曾琴妃曾朝光尤胜利
Owner ZHEJIANG SUNNY MACHINERY TECH
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