CN202724715U - Improved thermal vapor recompression system - Google Patents
Improved thermal vapor recompression system Download PDFInfo
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- CN202724715U CN202724715U CN 201220381462 CN201220381462U CN202724715U CN 202724715 U CN202724715 U CN 202724715U CN 201220381462 CN201220381462 CN 201220381462 CN 201220381462 U CN201220381462 U CN 201220381462U CN 202724715 U CN202724715 U CN 202724715U
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Abstract
The utility model belongs to material concentration and particularly relates to an improved thermal vapor recompression system. The improved thermal vapor recompression system comprises vaporizers arranged at intervals and an MVR (mechanical vapor recompression) machine, wherein material input ports are arranged at the upper parts of the vaporizers; the vapor input ports at the tops of the vaporizers are communicated with exogenous vapor; three output ports are arranged at the lower parts of the vaporizers and connected with input ports of a condensate pump, a material output pump and a gas-liquid separator; the gas-liquid separator is provided with two output ports; the gas phase output port of the gas-liquid separator is connected with the input end of the MVR machine; the liquid phase output port of the gas-liquid separator is connected with a material output pump; and the output end of the MVR machine is respectively communicated with the vapor supply inlets of the vaporizers through pipelines. The improved thermal vapor recompression system solves the problem of high energy consumption in the prior art and has the advantages of low energy consumption, low emission, low improvement and operation costs and the like.
Description
Technical field
The utility model belongs to the concentrated of material, refers to that especially a kind of improved thermodynamic steam recompresses system.
Background technology
Evaporimeter is to make solution concentrate or separate out the equipment of crystal grain from solution by heating.Mainly formed by heating clamber and vaporization chamber two parts.Heating clamber for the needed heat of evaporation, impels the liquid boiling vaporization to liquid carrying; Vaporization chamber separates gas-liquid two-phase fully.The steam that produces in the heating clamber is with a large amount of liquid foams, arrived the vaporization chamber than large space after, the effect of these liquid thereby self cohesion or demister etc. is able to separate with steam.Usually demister is located at the top of vaporization chamber.The groundwork of evaporimeter comprises thermodynamic steam recompression (TVR), function of mechanical steam recompression (MVR).
Wherein thermodynamic steam recompression (TVR) be a separator indirect steam part out under the drive of high-pressure work steam, after entering injector and mixing increasing temperature and pressure, enter heating clamber and be used as heating steam and use, heat feed liquid.Another part enters condenser, discharges after the condensation.Heating steam condenses into water and discharges in heating clamber.Solution evaporation and concentration under the heating of heating steam in the pipe is discharged after reaching requirement.
According to incompletely statistics, China has 50,000 multi-effect evaporators in industries such as medicine, sucrose, starch sugar, chemical industry at present, all belongs to the falling film type multi-effect evaporator.Multi-effect evaporator mainly consumes the steam energy consumption, this evaporimeter must adopt the external source air supply system to continue to provide steam, be generally 5kg pressure, the heat exchange mode of 125 ℃ steam by cascade utilization evaporates the moisture in the material, on average whenever evaporates 1 ton of water and need consume 0.5 ton of steam; Evaporimeter also must be equipped with condenser system, material balance system, vacuum system in addition, on average whenever evaporates 1 ton of water and need consume the 135kg standard coal.Calculate by ton water consumption 135kg standard coal, then 50,000 multi-effect evaporators in the whole nation are pressed 10t/h, the annual power consumption 4.86 hundred million t standard coals that need.
Traditional multi-effect evaporator is that 5kg pressure, 125 ℃ steam are entered vapo(u)rization system from an effect, through discharging from end effect after the step heat exchange, temperature is generally 85-90 ℃, and the steam of discharge namely enters condenser system and becomes condensed water and go out of use, and has wasted greatly the heat energy of water.
MVR technology system utilizes the energy of the indirect steam that it self produces, thereby reduces a to external world power-saving technology of the demand of the energy.As far back as the sixties, the successful fields such as chemical industry, food, papermaking, medicine, desalinization and sewage disposal that this technology is used for of Germany and France.In the Multi-effect Evaporation Processes, the indirect steam of a certain effect of evaporimeter can not be directly as this effect thermal source, can only be as the thermal source of inferior effect or inferior several effects.As must additionally giving its energy as this effect thermal source, its temperature (pressure) is improved.Steam jet pump can only the compression section indirect steam, and the MVR evaporimeter is all indirect steams in the compressible evaporimeter then.
Yun Shichang has delivered in 1993 and has proposed theoretical point view that MVR directly is combined with multi-effect evaporator among document " function of mechanical steam recompression (MVR) " (the 21st volume the 2nd phase P78-P81 in " China Dairy Industry " April in 1993), general MVR technology can raise vapor (steam) temperature 8 ℃ by compression, so for temperature difference 12-20 ℃ of reaching multi-effect evaporator, two MVR are together in series, make recovered steam can promote 16 ℃ through second-compressed.Although this technology has proposed a new reducing energy consumption scheme, but at that time, only be confined to theoretical research stage, and himself exist certain defective: at that time China's supply of electric power is relatively more nervous, price ratio of electricity to gas is high, the gas consumption that adopted this Techniques For Reducing, but power consumption increases, and promotes limitedly in situation at that time, and the price of a cover MVR equipment is at 200-400 ten thousand in the market.Adopt many MVR equipment that TVR equipment is transformed, greatly increased improvement expenses.
Summary of the invention
The purpose of this utility model is to provide improved thermodynamic steam recompression system, dexterously the MVR technology is transformed existing thermodynamic steam recompression system, when reducing energy consumption, has significantly reduced scrap build expense and operating cost.
The purpose of this utility model is achieved in that
The thermodynamic steam recompression system of improved thermodynamic steam recompression technique special use comprises the evaporimeter that the interval arranges, and the MVR compressor; Each evaporimeter top is provided with the material input port, the steam input port at each evaporimeter top is communicated with exogenous steam, and each evaporimeter bottom has three tunnel outputs, and its first via connects condensate pump, it the second the tunnel connects the material rear pump, and its Third Road connects the input port of gas-liquid separator; The total two-way output of gas-liquid separator, its gas phase output connects the input of MVR compressor, and its liquid phase output connects the material rear pump, and the output of MVR compressor is communicated with the additional steam inlet of each evaporimeter respectively by the road.
Concrete technical scheme of the present utility model also has:
For ease of the material of inputting each evaporimeter is measured, the material input port on each evaporimeter top is communicated with respectively flowmeter.
For the material that enters evaporimeter is carried out preheating, further to be beneficial to the concentrated of material.Preferably technical scheme is, also comprises a preheater, and the output of this preheater is communicated with the input of flowmeter, the input termination material input of this preheater.
The obtained technological progress of the utility model is:
1, the MVR compressor adopts mode in parallel to be connected with each evaporimeter in the improved thermodynamic steam recompression system, a kind of with one-to-multiple form, this is connected to original multi-effect evaporator after MVR is connected, save great deal of investment.The price of a cover MVR equipment is at 200-400 ten thousand in the market.So by reaching after this technological transformation under the same output condition, can save a cover MVR equipment investment.And enterprise do not need discarded existing multi-effect evaporator, gets final product original multi-effect evaporator transformation, and newly buys a whole set of equipment and compares and saved especially a large amount of equipment investments.
2, adopting system of the present utility model is the indirect steam that the material boiling produces owing to what reuse, so whole system does not need the subsidiary condenser system of original multi-effect evaporator, vacuum system etc., decrease the operating costs such as the water resource of enterprise and power consumption.
3, the more traditional multi-effect evaporator of improved thermodynamic steam recompression system can save energy more than 61% before transforming after the water transformation of every evaporation equivalent.The steam that provides that the external source air supply system continues is provided traditional multi-effect evaporator, not needing after the transformation provides lasting exogenous steam to evaporimeter, just when system opens, provide a certain amount of steam to get final product, again enter heat-exchange system after system can utilize the indirect steam of material generation by the mechanical compress recovery it to be heated afterwards and carry out recycling.
The energy consumption comparison situation of improved thermodynamic steam recompression system and traditional triple effect evaporator is as shown in the table.
Table 1 10t/h improved thermodynamic steam recompression system and traditional triple effect evaporator
The contrast of operating cost inventory
Annotate: the steam standard coal coefficient is 0.125; The electricity standard coal coefficient is 0.35
As can be known from the above table, the traditional triple effect evaporator of 1 ton of water of every evaporation need consume energy: 4000 ÷, 10 * 0.125+80 ÷, 10 * 0.35=52.8kg standard coal.
1 ton of improved thermodynamic steam recompression of water of every evaporation system need consume energy: 150.5 ÷, 10 * 0.125+354 ÷, 10 * 0.35=14.27kg standard coal.
So the improved thermodynamic steam recompression of 1 ton of water of every evaporation system can save energy than triple effect evaporator: (52.8-14.27) ÷ 52.8 * 100%=72.97%.
4, improved thermodynamic steam recompression system's employing parallel way is connected with multi-effect evaporator, can make things convenient for enterprise to require to control the keying of the valve that is connected with each evaporimeter according to the output in dull season and busy season, can make so the balanced distribution of enterprise, production control efficient, this is that the multi-effect evaporator of the form of originally connecting is beyond one's reach.
5, whole equipment running temperature is low than the multiple-effect evaporation equipment, will be less to the infringement of the nutritional labeling in the feed liquid.
Description of drawings
Accompanying drawing of the present utility model has:
Fig. 1 is the structural representation of thermodynamic steam recompression system in the utility model.
Reference numeral in the accompanying drawing is as follows:
1, material rear pump; 2, preheater; 3, flowmeter; 4, steam input port; 5, condensate pump; 6, evaporimeter; 7, replenish the steam inlet; 8, gas-liquid separator; 9, MVR compressor.
The specific embodiment
Below in conjunction with embodiment the utility model is described further; but conduct is not to restriction of the present utility model; protection domain of the present utility model is as the criterion with the content of claim record; any equivalence techniques means of having done according to this specification are replaced, and all do not break away from protection domain of the present utility model.
Embodiment 1
Evaporimeter in the utility model is four, and its overall technical architecture is as follows:
The thermodynamic steam recompression system of improved thermodynamic steam recompression technique special use comprises the evaporimeter 6 that the interval arranges, and MVR compressor 9; Each evaporimeter 6 top is provided with the material input port, also comprises a preheater 2, and the output of this preheater 2 is communicated with the input of flowmeter 3, the input termination material input of this preheater 2; The steam input port 4 at each evaporimeter 6 top is communicated with exogenous steams, and each evaporimeter 6 bottom has three tunnel outputs, and its first via connects condensate pump 5, and it the second the tunnel connects material rear pump 1, and its Third Road connects the input port of gas-liquid separator 8; Gas-liquid separator 8 total two-way outputs, its gas phase output connects the input of MVR compressor 9, and its liquid phase output connects material rear pump 1, and the output of MVR compressor 9 is communicated with the additional steam inlet 7 of each evaporimeter 6 respectively by the road.
Operation principle of the present utility model is as follows:
A, material input
Material passes through first preheater 2 preheatings, and the material warp after the preheating enters each evaporimeter 6 with the flowmeter 3 that the material input port on each evaporimeter 6 top is communicated with respectively.
B, exogenous steam input
Exogenous steam through steam input port 4 each evaporimeter 6 inside of input at each evaporimeter 6 top, heats concentrated respectively to material;
C, MVR steam boosting
Steam after material concentrates in each evaporimeter 6 separates through gas-liquid separator 8, and liquid phase wherein connects respectively 1 output of material rear pump, and gas phase is wherein inputted respectively 9 compressions of MVR compressor;
Steam input after D, the supercharging
The steam of output is through 7 each evaporimeter 6 inside of input, additional steam inlet on each evaporimeter 6 top after 9 compressions of MVR compressor;
E, material output
Repeating step C, D reach the concentrated requirement of material, and the material after heating is concentrated connects 1 discharge of material rear pump by the material outlet of each evaporimeter 6 bottom.
Also comprise a step F behind described step B, C, D, the E, the process conditions of this step are as follows:
The discharging of water in F, each evaporimeter
The water that each evaporimeter 6 produces at work is by discharging with the condensate pump 5 that its bottom is connected respectively.
Claims (3)
1. improved thermodynamic steam recompresses system, comprises the evaporimeter (6) that the interval arranges, and MVR compressor (9); It is characterized in that each evaporimeter (6) top is provided with the material input port, the steam input port (4) at each evaporimeter (6) top is communicated with exogenous steam, each evaporimeter (6) bottom has three tunnel outputs, its first via connects condensate pump (5), it the second the tunnel connects material rear pump (1), and its Third Road connects the input port of gas-liquid separator (8); The total two-way output of gas-liquid separator (8), its gas phase output connects the input of MVR compressor (9), its liquid phase output connects material rear pump (1), and the output of MVR compressor (9) is communicated with the additional steam inlet (7) of each evaporimeter (6) respectively by the road.
2. improved thermodynamic steam according to claim 1 recompresses system, it is characterized in that the material input port on each evaporimeter (6) top is communicated with respectively flowmeter (3).
3. improved thermodynamic steam according to claim 2 recompresses system, characterized by further comprising a preheater (2), and the output of this preheater (2) is communicated with the input of flowmeter (3), the input termination material input of this preheater (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220381462 CN202724715U (en) | 2012-08-03 | 2012-08-03 | Improved thermal vapor recompression system |
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| CN 201220381462 CN202724715U (en) | 2012-08-03 | 2012-08-03 | Improved thermal vapor recompression system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104069642A (en) * | 2013-03-28 | 2014-10-01 | 中国科学院理化技术研究所 | Positive-displacement compressor MVR heat pump evaporation system with adjustable pressure ratio working condition |
| CN106031831A (en) * | 2015-03-12 | 2016-10-19 | 沈美忠 | A PVR pressure-difference gas-liquid vapor cycle system |
| CN109457058A (en) * | 2018-11-23 | 2019-03-12 | 中粮融氏生物科技有限公司 | Novel energy-conserving starch sugar four-effect evaporator |
-
2012
- 2012-08-03 CN CN 201220381462 patent/CN202724715U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104069642A (en) * | 2013-03-28 | 2014-10-01 | 中国科学院理化技术研究所 | Positive-displacement compressor MVR heat pump evaporation system with adjustable pressure ratio working condition |
| CN104069642B (en) * | 2013-03-28 | 2015-12-23 | 中国科学院理化技术研究所 | The positive displacement compressor MVR thermo-compression evaporation system of pressure ratio climatic conditioning |
| CN106031831A (en) * | 2015-03-12 | 2016-10-19 | 沈美忠 | A PVR pressure-difference gas-liquid vapor cycle system |
| CN106031831B (en) * | 2015-03-12 | 2018-11-06 | 沈美忠 | A kind of pressure difference gas-liquid steam circulation |
| CN109457058A (en) * | 2018-11-23 | 2019-03-12 | 中粮融氏生物科技有限公司 | Novel energy-conserving starch sugar four-effect evaporator |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20160803 |