CN104958917B - Air dielectric pipeline start up by preheating MVR vapo(u)rization systems - Google Patents
Air dielectric pipeline start up by preheating MVR vapo(u)rization systems Download PDFInfo
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- CN104958917B CN104958917B CN201510292467.2A CN201510292467A CN104958917B CN 104958917 B CN104958917 B CN 104958917B CN 201510292467 A CN201510292467 A CN 201510292467A CN 104958917 B CN104958917 B CN 104958917B
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- mvr
- air dielectric
- rization systems
- preheating
- feed liquid
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Abstract
MVR technologies are to be mainly used in the important power-saving technology of evaporation industry, and MVR vapo(u)rization systems, which start to run, is usually required for the raw supplementary means such as steam or electric heating, while MVR being required to compress function variable-speed operation, so that system is constituted complication and also increases equipment investment cost.Air dielectric pipeline start up by preheating MVR vapo(u)rization systems of the present invention, air dielectric is compressed using the compression function of MVR compressors, feed liquid to be evaporated is preheated after improving air dielectric temperature, so that feed liquid is reached evaporation conditions and is gradually disengaged out more and more indirect steams, indirect steam can provide more heats after being compressed to feed liquid, and such system operation just gradually starts.The present invention proposes a kind of new method of MVR vapo(u)rization systems startup operation, is conducive to simplify the cost that system composition also reduces the system integration.
Description
Technical field
The present invention relates to function of mechanical steam recompression systems (abbreviation MVR), are mainly used in the power-saving technology of evaporation industry.
Background technology
MVR technologies are to be mainly used in the important power-saving technology of evaporation industry, and MVR vapo(u)rization systems, which start operation, usually all to be needed
The supplementary means such as steam or electric heating are given birth to, while MVR being required to compress function variable-speed operation, so that system is constituted complication and also increases
Equipment investment cost.Air dielectric pipeline start up by preheating MVR vapo(u)rization systems of the present invention, using the compression function of MVR compressors to air
Medium is compressed, and is preheated to feed liquid to be evaporated after improving air dielectric temperature, feed liquid evaporation conditions is made gradually to reach.
Invention content
The present invention compresses air dielectric using the compression function of MVR compressors, compressed air medium temperature
Enter heating equipment heating room after raising to preheat feed liquid, feed liquid gradually starts to evaporate after obtaining certain heat, then exists
Separation equipment isolates indirect steam, and indirect steam, by MVR compressor compresses, goes successively to heating room to feed liquid with air
Offer more fully heat, just more and more fully, the relatively fully rear gradually cut-out air of feed liquid evaporation flows into for such feed liquid evaporation,
The on-condensible gas of internal system is gradually removed again, until thoroughly removing clean.
The separation equipment tank body of this system specially opens up air suction inlet what feed liquid flowed into side position, so as to feed liquid and
Air forms relative flow and is conducive to evaporate.The size of air suction inlet refers to the sucking bore of MVR compressors, air suction inlet
External gate valve is to adjust air mass flow, then external air filter.What the driving of MVR compressors can take many forms
Power plant usually all uses motor to drive, and driving motor no longer uses change control system, this is to high-voltage frequency conversion and speed-adjusting motor
Has the meaning for clearly saving equipment investment cost from the point of view of driving.To enable the MVR vapo(u)rization systems of the present invention gradually to start
Reach and maintain system evaporation balance, used raw liquor pump and may relate to circulating pump must all take frequency control motor to drive
It is dynamic.
This system must take on-condensible gas removal method after reaching the sufficient evaporation conditions of comparison.This system heating equipment
Heating ceiling portion and condensate drum at the top of open up on-condensible gas tap and be respectively adopted valve control turn on and off, valve
Outer side of door reuse pipe is connected to, and the pipeline of connection uses a valve to control and is externally directly vented, using the control of another valve and very
Empty set system connection.Vacuum system is to thoroughly remove the final measure of on-condensible gas, can also assist the outlet of control MVR compressors
Pressure.Condensate liquid is discharged in condensate drum bottom, and heating chamber pressure according to heating equipment is presented three kinds of positive pressure, negative pressure or normal pressure differences
Situation be considered as pressure-control valve, condensate pump or naturally outflow etc. different measures.
Description of the drawings
The invention belongs to the device systems in the field of evaporating, and are related to relationship between material or various media flow direction and each equipment.
Fig. 1 is that the system of air dielectric pipeline start up by preheating MVR vapo(u)rization systems constitutes schematic diagram.Arrow expresses each equipment or pipeline in Fig. 1
It makes a return journey between material or various media relationship, dotted line indicates the situation that may relate to.
Specific implementation mode
The MVR vapo(u)rization systems of the present invention, which start the important step of operation and to put item, to be described as follows：
1. prepare to start operation MVR vapo(u)rization systems, first make it is other it is necessary it is related check work, then by separation equipment air
Suction inlet gate valve is opened completely, and indirect steam pipeline and condensate liquid pipeline are all unimpeded, and heating equipment heats ceiling portion fixed gas
Fixed gas outlet valve is opened completely at the top of outlet and condensate drum, and the external blow valve of fixed gas connecting pipeline is opened completely, even
The valve for connecing vacuum system is first closed.
2. starting operation MVR compressors, heating ceiling portion fixed gas outlet valve is completely closed after starting normally, utilizes sky
Gas medium is to indirect steam pipeline and heating equipment preheating slightly time.
3. to start raw liquor pump compared with the slow-speed of revolution, monitoring enters the feed temperature of separation equipment to determine whether increasing raw liquor pump
Flow velocity.
4. being such as related to feed liquid forced circulation, to be followed compared with slow-speed of revolution startup after feed liquid accumulation certain altitude in separation equipment tank body
Ring pumps, and determines whether to accelerate cycle also according to feed temperature in separation equipment.
5. condensate drum begins with condensate liquid outflow or accumulation, starts to adjust air suction inlet gate valve, gradually reduce sky
Gas soakage is until gate valve Close All.
6. after air suction inlet gate valve Close All, starting to remove internal system on-condensible gas.It opens valve and is connected to vacuum
System closes on-condensible gas and is externally vented valve, simultaneously closes off condensate liquid outflow pipeline valve with anti-backflow, opens operation vacuum
System, alternating open/close fixed gas discharge valve at the top of heating ceiling portion's on-condensible gas discharge valve and condensate drum, repeatedly
Operation thoroughly removes totally until on-condensible gas.
7. after fixed gas thoroughly removes, closing the valve being connected with vacuum system, vacuum system is simultaneously stopped operation.It is logical
The flow velocity for the circulating pump that overregulates raw liquor pump and may relate to is put down to reach the default operating mode of MVR vapo(u)rization systems and maintain to evaporate
Weighing apparatus judges whether that starting to open at condensate liquid outflow pipeline valve starts normally to be discharged according to the actual pressure of heating room.
In summary the startup operation of the MVR vapo(u)rization systems of the present invention may be implemented in process.
Claims (5)
1. a kind of air dielectric pipeline start up by preheating MVR vapo(u)rization systems, including heating equipment, separation equipment, MVR compressors and condensate liquid
Tank belongs to the external-heat MVR vapo(u)rization systems of indirectly heat, is primarily characterized in that, in separation tank body equipment feed liquid port offside
Air suction inlet is opened up, it will be pre- to feed liquid to be evaporated after the air dielectric compression raising temperature of sucking when system starts and runs
Heat, no longer using raw steam and electric heating other supplementary means；The external gate valve of air suction inlet controls air mass flow, and gate valve is outer again
Connect air filter.
2. air dielectric pipeline start up by preheating MVR vapo(u)rization systems as described in claim 1, which is characterized in that compressor is as using electricity
Machine drives, and driving motor does not use change control system then.
3. air dielectric pipeline start up by preheating MVR vapo(u)rization systems as described in claim 1, which is characterized in that used in stoste input
Raw liquor pump must take frequency control motor to drive.
4. air dielectric pipeline start up by preheating MVR vapo(u)rization systems as described in claim 1, which is characterized in that feed liquid is as using pressure
Cycle, institute must take frequency control motor to drive using circulating pump.
5. air dielectric pipeline start up by preheating MVR vapo(u)rization systems as described in claim 1, which is characterized in that discharge must be removed not
Solidifying gas, the heating ceiling portion of this system heating equipment and condensate drum top open up on-condensible gas tap and are respectively adopted
Valve control turns on and off, and reuse pipe is connected on the outside of valve, and the pipeline of connection is externally directly vented using valve control,
Connection vacuum system is controlled using another valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510292467.2A CN104958917B (en) | 2015-06-01 | 2015-06-01 | Air dielectric pipeline start up by preheating MVR vapo(u)rization systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510292467.2A CN104958917B (en) | 2015-06-01 | 2015-06-01 | Air dielectric pipeline start up by preheating MVR vapo(u)rization systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104958917A CN104958917A (en) | 2015-10-07 |
| CN104958917B true CN104958917B (en) | 2018-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510292467.2A Expired - Fee Related CN104958917B (en) | 2015-06-01 | 2015-06-01 | Air dielectric pipeline start up by preheating MVR vapo(u)rization systems |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106422386B (en) * | 2016-12-01 | 2018-08-24 | 上海佳麟泵阀有限公司 | The MVR vaporising devices that room temperature starts |
| CN106390498B (en) * | 2016-12-01 | 2018-08-24 | 上海佳麟泵阀有限公司 | The MVR vaporising devices of low boiling point volatile matter in evaporation material can be removed |
| CN114906894A (en) * | 2022-05-31 | 2022-08-16 | 广州市心德实业有限公司 | MVR steam-free starting method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3109782A (en) * | 1954-12-30 | 1963-11-05 | British Petroleum Co | Vapor compression distillation process |
| CN201978514U (en) * | 2010-04-22 | 2011-09-21 | 姜广义 | Forced reverse circulating evaporator for steam |
| CN203540091U (en) * | 2013-10-30 | 2014-04-16 | 江苏米塔环境技术有限公司 | Evaporation preheating device applied to mechanical vapor recompression (MVR) vacuum evaporation equipment |
| CN103830923A (en) * | 2014-03-19 | 2014-06-04 | 杜明生 | Second-effect MVR (mechanical vapor recompression) vaporization system |
| CN203959850U (en) * | 2014-06-16 | 2014-11-26 | 溧阳德维透平机械有限公司 | A kind of MVR evaporation concentration equipment for fermentation industry |
| CN203954703U (en) * | 2014-06-16 | 2014-11-26 | 溧阳德维透平机械有限公司 | A kind of MVR evaporation concentration equipment for organic solvent evaporation industry |
-
2015
- 2015-06-01 CN CN201510292467.2A patent/CN104958917B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3109782A (en) * | 1954-12-30 | 1963-11-05 | British Petroleum Co | Vapor compression distillation process |
| CN201978514U (en) * | 2010-04-22 | 2011-09-21 | 姜广义 | Forced reverse circulating evaporator for steam |
| CN203540091U (en) * | 2013-10-30 | 2014-04-16 | 江苏米塔环境技术有限公司 | Evaporation preheating device applied to mechanical vapor recompression (MVR) vacuum evaporation equipment |
| CN103830923A (en) * | 2014-03-19 | 2014-06-04 | 杜明生 | Second-effect MVR (mechanical vapor recompression) vaporization system |
| CN203959850U (en) * | 2014-06-16 | 2014-11-26 | 溧阳德维透平机械有限公司 | A kind of MVR evaporation concentration equipment for fermentation industry |
| CN203954703U (en) * | 2014-06-16 | 2014-11-26 | 溧阳德维透平机械有限公司 | A kind of MVR evaporation concentration equipment for organic solvent evaporation industry |
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| CN104958917A (en) | 2015-10-07 |
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