CN201840900U - Shell-and-tube type falling film evaporator - Google Patents
Shell-and-tube type falling film evaporator Download PDFInfo
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- CN201840900U CN201840900U CN2010206087241U CN201020608724U CN201840900U CN 201840900 U CN201840900 U CN 201840900U CN 2010206087241 U CN2010206087241 U CN 2010206087241U CN 201020608724 U CN201020608724 U CN 201020608724U CN 201840900 U CN201840900 U CN 201840900U
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- liquid
- tube
- shell
- liquid distributor
- falling film
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Abstract
The utility model relates to chemical equipment, in particular to a shell-and-tube type falling film evaporator. A liquid distributor of the evaporator comprises a liquid distributing tube head and a circular seat, wherein the liquid distributing tube head is in spot welding on the circular seat; the liquid distributing tube head extends into a heat exchange tube, and the length is adjustable; the outer diameter of the liquid distributing tube head is smaller than the inner diameter of the heat exchange tube; the circular seat is provided with a stop port contacting with the outer diameter of the heat exchange tube; and the circumferential direction of the upper end of the heat exchange tube is provided with a liquid flowing groove. By applying the shell-and-tube type falling film evaporator and adopting the liquid distributor with structural optimization, liquid can be distributed more evenly on the tube wall to form uniform liquid films. The liquid distributor has simple structure, is easy to adjust and is convenient to disassemble and assemble. Moreover, the heat exchange area of the evaporator is enhanced, thereby enhancing the vaporization efficiency and solving the defects of non-uniform distribution of the liquid films, larger thickness fluctuation of the liquid films, inconvenience in adjustment and the like in a traditional shell-and-tube type falling film evaporator.
Description
Technical field
The utility model relates to a kind of chemical industry equipment, relates in particular to a kind of shell-and-tube falling film evaporator.
Background technology
In chemical plant installations, it is phase transition process common in the chemical plant installations that liquid phase is become gas phase, and this phase transition process of energy-efficient realization is the key point of chemical plant installations.Need to absorb heat in the vaporizing liquid process, its energy is improved is enough to be vaporized into steam, and in absorbing the heat process, heat exchange efficiency is high more, and vaporization efficency is just high more.The efficient height of shell-and-tube falling film evaporator, its key is can form one deck liquid film at inside pipe wall through the liquid of heat exchanger tube, cold conditions liquid and tube wall fully carry out heat exchange, make liquid absorption heat and form steam, steam in pipe no any liquid resistance flow to rectifying or destilling tower, the purpose of realization rectifying or distillation.
The structure of a key is a liquid distributor in the shell-and-tube falling film evaporator, and liquid forms liquid film by liquid distributor in heat exchanger tube, liquid distributor structure difference, and the heat exchange efficiency of pairing shell-and-tube falling film evaporator is also different.The shell-and-tube falling film evaporator is different because of the difference of liquid distributor structure, the liquid distributor structure of common evaporimeter has tube head type, sawtooth pattern, vice type etc., the liquid distributor of these structures all respectively has its characteristics: tube head type structure is the simplest, only the tube head point is welded on the heat exchanger tube and gets final product tube head and heat exchanger tube concentricity when the uniformity coefficient of thickness of liquid film depends on spot welding.Evaporimeter with liquid distributor of above type structure is suitable for that work has a narrow range of temperature, the operating mode of continued operation, the temperature difference is big for working, the operating mode of single batch of intermittent operation, then because the influence of the former Weld Performance of the exchange of the spot welding between tube head and heat exchanger tube heat pipe, after using certain hour, the former weld seam of heat exchanger tube crackle occurs and causes equipment fault; Sawtooth pattern is simple in structure, and liquid flows in the pipe along the groove of sawtooth, and thickness of liquid film is even inadequately, and the evaporimeter heat exchange efficiency is low; Vice type structure is complicated, and thickness of liquid film is more even, but stops up easily.
Summary of the invention
Defective in view of existing shell-and-tube falling film evaporator existence, the utility model goes out a kind of novel shell-and-tube falling film evaporator by the structural design of transforming liquid distributor in the existing evaporimeter, causes disadvantages such as liquid film skewness in the evaporimeter, thickness of liquid film fluctuate greatly, inconvenience adjustment to solve existing traditional liquid distributor.
The technical solution that realizes the utility model purpose is:
Shell-and-tube falling film evaporator of the present utility model comprises liquid charging ring, liquid distributor, evaporator pipe sheet, housing, gaseous phase outlet; It is characterized in that: the liquid distributor of described evaporimeter comprises liquid distributor head, circular seat, and liquid distributor head point is welded on the circular seat.Described liquid distributor head puts in the heat exchanger tube, and adjustable length, and the length that the liquid distributor head puts in the heat exchanger tube is 10～15mm, preferred 15mm.Described circular seat is placed on the heat exchanger tube, and circular seat is provided with seam, contacts with the heat exchanger tube external diameter, and the heat exchanger tube upper end edge is circumferentially with 6～8 fluid grooves, preferred 8 fluid grooves.Described cloth liquid tubule head external diameter is less than the heat exchanger tube internal diameter, to form the annulus of cloth liquid.
Use shell-and-tube falling film evaporator of the present utility model, select the liquid distributor of structure optimization for use, the liquid distributor head is put in the heat exchanger tube, and the gap uniformity of liquid distributor and heat exchange tube wall can be evenly distributed the liquid that flows down more on tube wall, form uniform liquid film, this liquid distributor is simple in structure, processing easily, easy accessibility, and improved the heat exchange area of evaporimeter, thereby improved vaporization efficency.
For making the utility model innovation essence be easier to understand,, the architectural feature and the beneficial effect thereof of this kind shell-and-tube falling film evaporator is described in further detail below in conjunction with embodiment and accompanying drawing thereof.
Description of drawings
Fig. 1 is the utility model example structure schematic diagram;
Fig. 2 is that the B of Fig. 1 is to schematic top plan view;
Fig. 3 is the local enlarged diagram of liquid distributor of the present utility model;
Fig. 4 is the local enlarged diagram in liquid distributor tube head of the present utility model junction;
The implication of each mark is in the above-mentioned accompanying drawing:
1～liquid charging ring, 2～liquid distributor, 3～evaporator pipe sheet, 4～heat exchanger tube, 5～housing, 6～gaseous phase outlet, 7～liquid distributor head, 8～circular seat, 9～fluid groove, the outlet of 10～heat medium, 11～exhaust outlet, 12～heat medium inlet, 13～drain mouth.
The specific embodiment
With reference to Fig. 1: the shell-and-tube falling film evaporator, to form by liquid charging ring 1, liquid distributor 2, evaporator pipe sheet 3, heat exchanger tube 4, housing 5, gaseous phase outlet 6, this evaporimeter adopts the liquid distributor of Fig. 3, is made up of liquid distributor head 7, circular seat 8.
The utility model is applied to ethanol rectifying process units, shell-and-tube falling film evaporator heat exchange area 40m
2, the internal diameter φ 20mm of heat exchanger tube 4, length 2.5m, this liquid distributor is installed on heat exchanger tube 4 tops.The length that the external diameter φ 18mm of liquid distributor tube head 7, length 30mm, liquid distributor tube head 7 put in heat exchanger tube 4 is 15mm, and 7 of liquid distributor tube heads are welded on the circular seat 8.In ethanol rectifying is produced, crude product ethanol mother liquor, after preheater preheats, enter the distributor part on falling film evaporator top, the gap that the annulus of liquid process circular seat 8 lower inside and the annulus between circular seat 8 and the liquid distributor head 7 and fluid groove 9 enter between liquid distributor tube head 7 and the heat exchanger tube 4 forms liquid film, be evenly distributed on the inwall of heat exchanger tube 4, heating makes its vaporization to heat medium conduction oil (or steam) in the evaporimeter shell side to liquid film, the alcohol vapour of vaporization, the gaseous phase outlet 6 of flowing through in the heat exchanger tube 4 that does not have the resistance of any liquid enters in the rectifying column, in tower, separate, the ethanol vapor direction of flow cat head of lightweight, heavier material lagging is at the tower still, and the ethanol gas of cat head becomes liquid through condenser condenses, produces qualified ethanol.
Claims (5)
1. the shell-and-tube falling film evaporator comprises liquid charging ring, liquid distributor, evaporator pipe sheet, housing, gaseous phase outlet, and it is characterized in that: the liquid distributor of this evaporimeter comprises liquid distributor head, circular seat, and liquid distributor head point is welded on the circular seat; Described liquid distributor head puts in the heat exchanger tube, and adjustable length; Described liquid distributor head external diameter is less than the heat exchanger tube internal diameter; Described circular seat is provided with seam, contacts with the heat exchanger tube external diameter; Described heat exchanger tube upper end is circumferentially with fluid groove.
2. shell-and-tube falling film evaporator according to claim 1 is characterized in that: the length that described liquid distributor head puts in the heat exchanger tube is 10～15mm.
3. shell-and-tube falling film evaporator according to claim 2 is characterized in that:
The length that described liquid distributor head puts in the heat exchanger tube is 15mm.
4. shell-and-tube falling film evaporator according to claim 1 is characterized in that: the heat exchanger tube upper end edge is circumferentially with 6～8 fluid grooves.
5. shell-and-tube falling film evaporator according to claim 4 is characterized in that: the heat exchanger tube upper end edge is circumferentially with 8 fluid grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206087241U CN201840900U (en) | 2010-11-05 | 2010-11-05 | Shell-and-tube type falling film evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206087241U CN201840900U (en) | 2010-11-05 | 2010-11-05 | Shell-and-tube type falling film evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201840900U true CN201840900U (en) | 2011-05-25 |
Family
ID=44035805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206087241U Expired - Fee Related CN201840900U (en) | 2010-11-05 | 2010-11-05 | Shell-and-tube type falling film evaporator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201840900U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925220A (en) * | 2012-11-27 | 2013-02-13 | 淄博义丰机械工程有限公司 | Normal pressure phenol water evaporator used for coal gas generator |
| CN103175435A (en) * | 2013-04-22 | 2013-06-26 | 江苏华益科技有限公司 | Liquid inlet distribution device for heat exchanger tubes |
| CN105944548A (en) * | 2016-07-05 | 2016-09-21 | 山东能工低碳科技有限公司 | Desulfurizing tower inlet flue duct and system with desulfurized wastewater concentration function |
| CN107782761A (en) * | 2017-09-29 | 2018-03-09 | 温州大学 | For detecting the experimental provision and method of channel form pipe surface liquid film temperature characterisitic |
| CN109316769A (en) * | 2018-10-15 | 2019-02-12 | 重庆庆寰环保科技有限公司 | The cloth membrane module of falling film evaporator |
| CN111359242A (en) * | 2020-04-07 | 2020-07-03 | 苏州汉浩分离技术有限公司 | Falling film evaporator |
-
2010
- 2010-11-05 CN CN2010206087241U patent/CN201840900U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925220A (en) * | 2012-11-27 | 2013-02-13 | 淄博义丰机械工程有限公司 | Normal pressure phenol water evaporator used for coal gas generator |
| CN103175435A (en) * | 2013-04-22 | 2013-06-26 | 江苏华益科技有限公司 | Liquid inlet distribution device for heat exchanger tubes |
| CN103175435B (en) * | 2013-04-22 | 2015-09-02 | 江苏华益科技有限公司 | For the liquid inlet distribution apparatus of heat exchanger tube |
| CN105944548A (en) * | 2016-07-05 | 2016-09-21 | 山东能工低碳科技有限公司 | Desulfurizing tower inlet flue duct and system with desulfurized wastewater concentration function |
| CN105944548B (en) * | 2016-07-05 | 2019-01-29 | 山东能工低碳科技有限公司 | A kind of desulfurizing tower gas approach and system with desulfurization wastewater concentrating function |
| CN107782761A (en) * | 2017-09-29 | 2018-03-09 | 温州大学 | For detecting the experimental provision and method of channel form pipe surface liquid film temperature characterisitic |
| CN107782761B (en) * | 2017-09-29 | 2020-06-02 | 温州大学 | Experimental device and method for detecting temperature characteristic of liquid film on surface of grooved circular tube |
| CN109316769A (en) * | 2018-10-15 | 2019-02-12 | 重庆庆寰环保科技有限公司 | The cloth membrane module of falling film evaporator |
| CN111359242A (en) * | 2020-04-07 | 2020-07-03 | 苏州汉浩分离技术有限公司 | Falling film evaporator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20181105 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |