CN202983245U - MVR (Mechanical Vapor Recompression) evaporator applicable to concentration of magnesium sulfate solution - Google Patents
MVR (Mechanical Vapor Recompression) evaporator applicable to concentration of magnesium sulfate solution Download PDFInfo
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- CN202983245U CN202983245U CN2012206334977U CN201220633497U CN202983245U CN 202983245 U CN202983245 U CN 202983245U CN 2012206334977 U CN2012206334977 U CN 2012206334977U CN 201220633497 U CN201220633497 U CN 201220633497U CN 202983245 U CN202983245 U CN 202983245U
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Abstract
The utility model discloses an MVR (Mechanical Vapor Recompression) evaporator applicable to concentration of a magnesium sulfate solution. The MVR evaporator applicable to concentration of the magnesium sulfate solution is composed of an evaporator body, a first-level vapor-liquid separation chamber, a second-level vapor-liquid separation chamber, a steam compressor, a superheat degree remover and a circulating pump, wherein multiple evaporating pipes are arranged inside the evaporator body to respectively compose a rising film evaporator and a falling film evaporator; a steam inlet, a non-condensable gas exhaust port and a condensed water exhaust port are arranged at the sidewall of the evaporator body; evaporating pipes in the falling film evaporator in the evaporator body are concentric tapered pipes; the big head of each tapered pipe is connected to a material liquid while the small head of each tapered pipe is connected to the first-level vapor-liquid separation chamber; the evaporating pipes in the rising film evaporator are columnar pipes; the lower end of the tube pass of each columnar pipe is connected to a circulating pump; and the shell pass of the evaporator body is connected to the steam compressor. The MVR evaporator applicable to concentration of the magnesium sulfate solution has the advantages of saving consumption of steam as the steam compressor can change the low-quality secondary steam into high-quality steam, and being compact in structure, low in cost and easy to operate. The MVR evaporator is applicable to the concentration of the magnesium sulfate solution.
Description
Technical field
The utility model relates to a kind of evaporimeter, is a kind of concentrated MVR evaporimeter of Adlerika that is applicable to specifically.Belong to field of inorganic chemical engineering.
Background technology
In power plant's magnesium method desulfurization by-product Adlerika, magnesium sulfate quality percentage composition is lower, if adopt the common process evaporation to reclaim epsom salt, steam consumption is too high, and the operating cost expense is high.
Also contain a small amount of Ca in the Adlerika of power plant's magnesium method desulfurization slurry after catalytic oxidation, flocculation sediment, clarification filtration
2+, Cl
-, SO
3 2-Reach the impurity such as flocculant, wherein Ca
2+Can form calcium sulfate dirt in evaporation process, these dirts can adhere on the heat exchange pipe of evaporator wall, have a strong impact on heat transfer effect.And the flocculant that remains in Adlerika can make Adlerika easily produce foam in evaporation process, can form entrainment.
Multiple-effect following current forced evaporation technique is adopted in the at present evaporation of Adlerika more, this evaporation technology flow process is complicated, energy consumption is large, complicated operation and evaporation intensity low.Traditional MVR evaporimeter is only applicable to effective temperature difference in the evaporation of the material of 17-40 ℃ due to the energy that re-uses the indirect steam that self produces, and for Adlerika, certain restriction is arranged aspect temperature difference loss.
Summary of the invention
The purpose of this utility model is the defective for existing Adlerika evaporation technology, provide a kind of compact conformation, energy consumption low, be applicable to the concentrated MVR evaporimeter of Adlerika.
The technical solution of the utility model is, a kind of concentrated MVR evaporimeter of Adlerika that is applicable to is comprised of evaporator body, one-level vapor-liquid separation chamber, secondary vapor-liquid separation chamber, vapour compression machine, degree of superheat arrester, circulating pump.
Evaporator body inside is provided with many evaporation tubes, consists of shell side between evaporation tube and evaporator body sidewall, and evaporation tube consists of tube side, and the evaporator body sidewall is provided with steam inlet, fixed gas outlet and condensed water discharge outlet;
Tube side in evaporator body is divided into two groups, consist of respectively the climbing film evaporator that is positioned at the middle part and the falling film evaporator that is positioned at peripheral position, evaporation tube in falling film evaporator is the concentric tapered pipe, and the conical pipe major part is connected with liquid distributor, and the microcephaly is connected with one-level vapor-liquid separation chamber; Evaporation tube in climbing film evaporator is column tube, and the tube side lower end of climbing film evaporator is connected with circulating pump; The shell side of evaporator body is connected with vapour compression machine.
One-level as above vapor-liquid separation chamber, the upper end connects the tube side of falling film evaporator, and one-level vapor-liquid separation chamber side direction is connected with secondary vapor-liquid separation chamber by flange.Be provided with a circulation feed liquid pipeline in one-level vapor-liquid separation chamber center of inside.
Secondary as above vapor-liquid separation chamber, one secondary vapor-liquid separation chamber demister is arranged at top, secondary vapor-liquid separation chamber side direction is connected with one-level vapor-liquid separation chamber by flange, is provided with the indirect steam outlet in secondary vapor-liquid separation chamber upper end, and the lower end is provided with circulation material liquid outlet and concentrated solution outlet.
Vapour compression machine as above, upper end connection secondary vapor-liquid separation chamber, the lower end connects degree of superheat arrester.
Degree of superheat arrester as above, the upper end connects vapour compression machine, and the lower end connects the shell side of evaporator body.
The utility model has the advantages that, the low pressure that vapour compression machine will be separated from secondary vapor-liquid separation chamber, the pressure and temperature of low temperature indirect steam improve, and make it to reach manufacturing technique requirent, steam can be reused, thereby saved the energy.The fixed gas that contains in indirect steam is discharged by the fixed gas outlet, makes evaporation efficiency improve.
This MVR evaporimeter has a feed liquid circulating line, and this pipeline is connected with the climbing film evaporator tube side through one-level vapor-liquid separation chamber, this just makes the circulation feed liquid that the process of a preheating is arranged, make feed liquid through some moisture vaporization after climbing film evaporator, the indirect steam that evaporates in feed liquid flows downward fast, and with liquid film blow thinlyyer, flow velocity is faster, makes thermal resistance greatly reduce, heat transfer coefficient is higher.Selection of Tubes in Heat Exchangers taper heat exchanger tube in falling film evaporator, wide at the top and narrow at the bottom in addition, can effectively prevent dried wall, greatly reduces the formation of dirt.
The utility model has overcome that existing evaporation technology equipment needed thereby is huge, power consumption is large, expend a large amount of cooling waters, the coefficient of heat transfer is low, the shortcoming of easy fouling, is applicable to the evaporation and concentration of Adlerika.
Description of drawings
Fig. 1 is a kind of concentrated MVR evaporimeter organigram of Adlerika that is applicable to
In figure, arrow represents the flow direction of feed liquid and material in the course of work
The 1-circulating pump; 2-one-level vapor-liquid separation chamber; 3-circulation feed liquid entrance; The 4-condensed water discharge outlet; The 5-falling film evaporator; The 6-climbing film evaporator; The 7-steam inlet; The 8-liquid distributor; 9-gives birth to the steam inlet; 10-degree of superheat arrester; The 11-vapour compression machine; 12-fixed gas outlet; The 13-evaporator body; 14-indirect steam outlet; 15-secondary vapor-liquid separation chamber demister; 16-secondary vapor-liquid separation chamber; 17-circulation material liquid outlet; The 18-concentrated solution outlet; 19-material liquid entrance
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and instantiation.
A kind of concentrated MVR evaporimeter of Adlerika that is applicable to comprises evaporator body 13, one-level vapor-liquid separation chamber 2, secondary vapor-liquid separation chamber 16, vapour compression machine 11, degree of superheat arrester 10, circulating pump 1.
Evaporator body inside is provided with many evaporation tubes, consists of shell side between evaporation tube and evaporator body sidewall, and evaporation tube consists of tube side, and the evaporator body sidewall is provided with steam inlet 7, fixed gas outlet 12 and condensed water discharge outlet 4;
Tube side in evaporator body is divided into two groups, consist of respectively the climbing film evaporator 6 that is positioned at the middle part and the falling film evaporator 5 that is positioned at peripheral position, evaporation tubes in falling film evaporator 5 are the concentric tapered pipe, and the conical pipe major part is connected with liquid distributor 8, and the microcephaly is connected with one-level vapor-liquid separation chamber 2; Evaporation tubes in climbing film evaporator 6 are column tube, and the tube side lower end of climbing film evaporator is connected with circulating pump 1; The shell side of evaporator body is connected with vapour compression machine 11.
One-level as above vapor-liquid separation chamber 2, the upper end connects the tube side of falling film evaporator, and one-level vapor-liquid separation chamber side direction is connected with secondary vapor-liquid separation chamber 16 by flange.Be provided with circulation feed liquid entrance 3 in one-level vapor-liquid separation chamber center of inside.
Secondary as above vapor-liquid separation chamber 16, one secondary vapor-liquid separation chamber demister 15 is arranged at top, secondary vapor-liquid separation chamber side direction is connected with one-level vapor-liquid separation chamber 2 by flange, be provided with indirect steam outlet 14 in secondary vapor-liquid separation chamber upper end, the lower end is provided with circulation material liquid outlet 17 and concentrated solution outlet 18.
Degree of superheat arrester 10 as above, the upper end connects vapour compression machine 11, and the lower end connects the shell side of evaporator body.
Using method of the present utility model is:
The magnesium sulfate weak solution enters circulating line by material liquid entrance 19, carry out preheating in climbing film evaporator 6 and evaporate a certain amount of steam with being driven into by circulating pump 1 after the high circulation feed liquid of temperature is mixed, containing certain steam and proceed evaporation at the napex of climbing film evaporator in entering falling film evaporator 5 after by liquid distributor 8 redistributions.The feed liquid that contains a large amount of steam after evaporation is carried out initial gross separation in a vapor-liquid separation chamber 2, then enter secondary vapour liquid separator 16 and carry out Re-isolation, feed liquid after separation continues to enter in circulating line, be driven into evaporator body 13 by circulating pump 1 and continue the evaporation separation, until the indoor feed liquid of secondary vapor-liquid separation is discharged the MVR evaporimeters by feed liquid outlet 17 after reaching desired concn.
indirect steam in the 16 interior generations of secondary vapor-liquid separation chamber enters both vapor compression pump 11 through the indoor demister 15 of secondary vapor-liquid separation except after the feed liquid of deentrainment, low temperature in the both vapor compression pump, the indirect steam of low pressure becomes the steam of HTHP after overcompression, again through degree of superheat arrester 10 eliminate the degrees of superheat and become after the saturated vapor of high temperature with from giving birth to the shell side that enters evaporator body after the living steam that steam inlet 9 enters, continue the heat exchange condensation with Adlerika, wherein fixed gas is by fixed gas outlet 12 discharge systems, steam condensate (SC) is by condensed water discharge outlet 4 discharge systems.
Claims (5)
1. one kind is applicable to the concentrated MVR evaporimeter of Adlerika, is comprised of evaporator body, one-level vapor-liquid separation chamber, secondary vapor-liquid separation chamber, vapour compression machine, degree of superheat arrester, circulating pump, it is characterized in that:
Evaporator body inside is provided with many evaporation tubes, consists of shell side between evaporation tube and evaporator body sidewall, and evaporation tube consists of tube side, and the evaporator body sidewall is provided with steam inlet, fixed gas outlet and condensed water discharge outlet;
Tube side in evaporator body is divided into two groups, consist of respectively the climbing film evaporator that is positioned at the middle part and the falling film evaporator that is positioned at peripheral position, evaporation tube in falling film evaporator is the concentric tapered pipe, and the conical pipe major part is connected with liquid distributor, and the microcephaly is connected with one-level vapor-liquid separation chamber; Evaporation tube in climbing film evaporator is column tube, and the tube side lower end of climbing film evaporator is connected with circulating pump; The shell side of evaporator body is connected with vapour compression machine.
2. a kind of concentrated MVR evaporimeter of Adlerika that is applicable to as claimed in claim 1, it is characterized in that, one-level vapor-liquid separation chamber upper end connects the tube side of falling film evaporator, one-level vapor-liquid separation chamber side direction is connected with secondary vapor-liquid separation chamber by flange, is provided with a circulation feed liquid pipeline in one-level vapor-liquid separation chamber center of inside.
3. a kind of concentrated MVR evaporimeter of Adlerika that is applicable to as claimed in claim 1, it is characterized in that, one secondary vapor-liquid separation chamber demister is arranged at secondary vapor-liquid separation chamber top, secondary vapor-liquid separation chamber side direction is connected with one-level vapor-liquid separation chamber by flange, be provided with the indirect steam outlet in secondary vapor-liquid separation chamber upper end, the lower end is provided with circulation material liquid outlet and concentrated solution outlet.
4. a kind of concentrated MVR evaporimeter of Adlerika that is applicable to as claimed in claim 1, is characterized in that, the vapour compression machine upper end connects secondary vapor-liquid separation chamber, and the lower end connects degree of superheat arrester.
5. a kind of concentrated MVR evaporimeter of Adlerika that is applicable to as claimed in claim 1, is characterized in that, degree of superheat arrester upper end connection vapour compression machine, and the lower end connects the shell side of evaporator body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206334977U CN202983245U (en) | 2012-11-22 | 2012-11-22 | MVR (Mechanical Vapor Recompression) evaporator applicable to concentration of magnesium sulfate solution |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206334977U CN202983245U (en) | 2012-11-22 | 2012-11-22 | MVR (Mechanical Vapor Recompression) evaporator applicable to concentration of magnesium sulfate solution |
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| CN202983245U true CN202983245U (en) | 2013-06-12 |
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| CN2012206334977U Expired - Fee Related CN202983245U (en) | 2012-11-22 | 2012-11-22 | MVR (Mechanical Vapor Recompression) evaporator applicable to concentration of magnesium sulfate solution |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104192917A (en) * | 2014-09-06 | 2014-12-10 | 浙江华友钴业股份有限公司 | Nickel-cobalt sulfate continuous-crystallizing process |
| CN104671308A (en) * | 2013-12-02 | 2015-06-03 | 同方环境股份有限公司 | Mechanical compression evaporating device |
| CN105854323A (en) * | 2016-05-09 | 2016-08-17 | 覃景壮 | Falling-film evaporator balance device |
| CN106823421A (en) * | 2017-03-31 | 2017-06-13 | 上海方政机电自控设备有限公司 | Horizontal efficient liquid ammonia evaporator |
| CN112707419A (en) * | 2021-01-14 | 2021-04-27 | 江苏赛德力制药机械制造有限公司 | Production process for producing magnesium sulfate heptahydrate by combining MVR method |
| CN112933627A (en) * | 2021-04-06 | 2021-06-11 | 中国科学院广州能源研究所 | MVR falling film evaporator |
-
2012
- 2012-11-22 CN CN2012206334977U patent/CN202983245U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104671308A (en) * | 2013-12-02 | 2015-06-03 | 同方环境股份有限公司 | Mechanical compression evaporating device |
| CN104192917A (en) * | 2014-09-06 | 2014-12-10 | 浙江华友钴业股份有限公司 | Nickel-cobalt sulfate continuous-crystallizing process |
| CN104192917B (en) * | 2014-09-06 | 2017-01-18 | 浙江华友钴业股份有限公司 | Nickel-cobalt sulfate continuous-crystallizing process |
| CN105854323A (en) * | 2016-05-09 | 2016-08-17 | 覃景壮 | Falling-film evaporator balance device |
| CN106823421A (en) * | 2017-03-31 | 2017-06-13 | 上海方政机电自控设备有限公司 | Horizontal efficient liquid ammonia evaporator |
| CN112707419A (en) * | 2021-01-14 | 2021-04-27 | 江苏赛德力制药机械制造有限公司 | Production process for producing magnesium sulfate heptahydrate by combining MVR method |
| CN112933627A (en) * | 2021-04-06 | 2021-06-11 | 中国科学院广州能源研究所 | MVR falling film evaporator |
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