CN218130006U

CN218130006U - MVR evaporation plant with thermal cycle function

Info

Publication number: CN218130006U
Application number: CN202121771606.7U
Authority: CN
Inventors: 梁晔; 陆忠杰
Original assignee: Jiangxi Xinggan Pharmaceutical Technology Co ltd
Current assignee: Jiangxi Xinggan Pharmaceutical Technology Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-12-27
Anticipated expiration: 2031-07-30

Abstract

The utility model relates to a MVR evaporation plant especially relates to a MVR evaporation plant with thermal cycle function. The utility model provides a MVR evaporation plant with thermal cycle function, includes the heat exchanger, the feed inlet of heat exchanger upper end, the discharge gate of heat exchanger lower extreme, the air inlet of heat exchanger upper portion one side, the first gas outlet of heat exchanger lower part one side, the liquid outlet of heat exchanger lower part opposite side, the heat exchange tube of distribution in the heat exchanger, vapor compressor, first connecting tube, separator, second connecting tube and third connecting tube. The steam evaporated from the material in the heat exchange tube is used for stirring the steam outside the heat exchange tube, so that the steam and the material are prevented from being mixed, and the utilization rate of the steam for heating the material is improved.

Description

MVR evaporation plant with thermal cycle function

Technical Field

The utility model relates to a MVR evaporation plant especially relates to a MVR evaporation plant with thermal cycle function.

Background

The MVR evaporator is a novel high-efficiency energy-saving evaporation device mainly applied to the pharmaceutical industry, the device adopts low-temperature and low-pressure steaming technology and clean energy as energy sources to generate steam, water in media is separated out, the MVR evaporator is an international advanced evaporation technology at present and is an upgrading and updating product for replacing a traditional evaporator, the MVR evaporator is different from a common single-effect falling film evaporator or a multiple-effect falling film evaporator, the MVR is a single-body evaporator and integrates the multiple-effect falling film evaporator, sectional evaporation is adopted according to different required product concentrations, namely when the product cannot reach the required concentration after passing through an effect body for the first time, the product is pumped to the upper part of the effect body through a pipeline outside the effect body after leaving the effect body, and then passes through the effect body repeatedly to reach the required concentration.

However, the steam generated by heating the materials by the hot steam circulation in the prior art is easy to be mixed with the materials again, and the utilization rate of the steam is not high.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art and have the shortcoming, the utility model provides a MVR evaporation plant with thermal cycle function, the steam that the material evaporated in the heat exchange tube is used for playing the stirring effect to the steam outside the heat exchange tube, has not only prevented steam and material mixing, has improved steam heating material utilization ratio moreover.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a MVR evaporation plant with thermal cycle function, including the air inlet of the discharge gate of feed inlet, heat exchanger lower extreme on the heat exchanger, heat exchanger upper portion one side of heat exchanger, the first gas outlet of heat exchanger lower part one side, the liquid outlet of heat exchanger lower part opposite side, the heat exchange tube, vapor compressor, first connecting tube, separator, second connecting tube and the third connecting tube of distribution in the heat exchanger, still including closed block and liquid distributor and second gas outlet, the liquid outlet is located first gas outlet below, the interval is provided with two in the heat exchanger closed block, below the closed block is located liquid outlet below, top the closed block is located the air inlet top, the heat exchange tube sets up between the closed block, the closed block will spatial separation in the heat exchanger becomes upper portion space, middle part space and lower part space, under the heat exchange tube port with the lower part space is linked together, the upper portion space with the upper portion space is linked together through second gas outlet, the liquid distributor sets up in the upper portion space, the liquid distributor can follow the material that the feed inlet got into distributes to each on the inner wall of heat exchange tube.

As a further improvement of the above technical solution, the gas-liquid separator further comprises a fourth connecting pipeline, the fourth connecting pipeline is arranged between the second gas outlet and the middle space, and the middle space is communicated with the upper space through the fourth connecting pipeline.

As a further improvement of the technical scheme, the heat exchanger further comprises a sleeve and a backflow port, the heat exchanger outer wall of the middle space is sleeved with the sleeve, a shunting cavity is formed between the sleeve and the heat exchanger outer wall, the backflow port is arranged on the sleeve outer wall and communicated with the shunting cavity, two ends of a fourth connecting pipeline are respectively communicated with the second gas outlet and the backflow port, shunting holes are formed in the heat exchanger outer wall in the shunting cavity, and the shunting holes are communicated with the shunting cavity and the middle space.

As a further improvement of the above technical solution, the device further comprises an electromagnetic valve, the electromagnetic valve is arranged on the liquid outlet, the electromagnetic valve ensures that the bottom of the middle space has a condensate water liquid level with a certain height, and the condensate water liquid level is located between the liquid outlet and the first gas outlet.

As a further improvement of the above technical solution, the separator includes a steam inlet and a steam outlet, the second connecting pipe is connected between the steam inlet and the first air outlet, and the third connecting pipe is connected between the steam outlet and the inlet of the steam compressor.

As a further improvement of the technical scheme, the vapor compressor is an MVR vapor compressor.

As a further improvement of the technical scheme, the device also comprises a liquid level sensor and a controller, wherein the liquid level sensor is used for detecting the height of the liquid level of the condensed water;

and if the height of the condensate water liquid level is higher than a set value, the controller controls the electromagnetic valve to discharge condensate water, and when the height of the condensate water liquid level is within the set value, the controller controls the electromagnetic valve to stop the liquid outlet.

The beneficial effects of the utility model are that: 1. when materials are evaporated, the liquid distributor distributes the materials on the inner walls of the heat exchange tubes, the materials slowly flow down along the inner walls of the heat exchange tubes, high-temperature and high-pressure steam is introduced into the middle space of the heat exchanger by the steam compressor, so that the materials in the heat exchange tubes are heated and evaporated, the concentrated materials flow into the lower space and flow out through the discharge port, the steam evaporated in the materials flows out through the upper space and the second gas outlet, and the problem that the steam is mixed with the materials again is solved.

2. Steam that evaporates in the material enters into the middle part space through the fourth connecting tube in, stirs the steam in the middle part space to improved the high-temperature and high-pressure steam in the middle part space and carried out the efficiency that heats to the material in the heat transfer pipe, improved steam heating material utilization ratio, the steam that evaporates in the material simultaneously can further heat the evaporation to the commodity circulation, further improved steam heating material utilization ratio.

Drawings

Fig. 1 is a schematic structural view of an evaporation apparatus according to the present embodiment.

Fig. 2 is a schematic structural diagram of the bushing of the present embodiment.

Wherein the figures include the following reference numerals: 1. the heat exchanger comprises a heat exchanger body 101, an air inlet 102, a second air outlet 102, a sealing block 2, a sealing block 3, a heat exchange tube 4, a feed inlet 5, a discharge port 6, a first air outlet 7, a liquid outlet 8, an electromagnetic valve 9, a liquid distributor 10, a separator 1001, a steam inlet 1002, a steam outlet 11, a steam compressor 12, a first connecting pipeline 13, a second connecting pipeline 14, a third connecting pipeline 15, a fourth connecting pipeline 16, a sleeve 17, a flow dividing cavity 18, a return port 19 and a flow dividing hole.

Detailed Description

The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which currently preferred embodiments of the invention are shown. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for completeness and fully convey the scope of the invention to the skilled person.

As shown in fig. 1-2, an MVR evaporation device with a thermal cycle function comprises a heat exchanger 1, a feed inlet 4 at the upper end of the heat exchanger 1, a discharge outlet 5 at the lower end of the heat exchanger 1, an air inlet 101 at one side of the upper part of the heat exchanger 1, a first air outlet 6 at one side of the lower part of the heat exchanger 1, a liquid outlet 7 at the other side of the lower part of the heat exchanger 1, heat exchange tubes 3 distributed in the heat exchanger 1, a vapor compressor 11, a first connecting pipeline 12, a separator 10, a second connecting pipeline 13 and a third connecting pipeline 14, and further comprises a closing block 2, a liquid distributor 9 and a second air outlet 102, wherein the liquid outlet 7 is positioned below the first air outlet 6, two closing blocks 2 are arranged at intervals in the heat exchanger 1, the closing block 2 below the liquid outlet 7, the closing block 2 above is positioned above the air inlet 101, the heat exchange tubes 3 are arranged between the closing blocks 2, the closing blocks 2 divide the space in the heat exchanger 1 into an upper space, a middle space and a lower space, the lower port of the heat exchange tubes 3 is communicated with the upper space, the upper space of the liquid distributor 9, and the inner wall of the liquid distributor 4 can enter the inner wall of each liquid distributor.

When materials are evaporated, the liquid distributor 9 distributes the materials on the inner wall of each heat exchange tube 3, the materials slowly flow down along the inner wall of the heat exchange tubes 3, the steam compressor 11 introduces high-temperature and high-pressure steam into the middle space of the heat exchanger 1, so that the materials in the heat exchange tubes 3 are heated and evaporated, the concentrated materials flow to the lower space and flow out through the discharge port 5, the steam evaporated in the materials flows out through the upper space and the second gas outlet 102, and the problem that the steam is mixed with the materials again is solved.

Further, a fourth connecting pipeline 15 is further included, the fourth connecting pipeline 15 is arranged between the second air outlet 102 and the middle space, and the middle space is communicated with the upper space through the fourth connecting pipeline 15.

Steam evaporated in the material enters the middle space through the fourth connecting pipeline 15, and the steam in the middle space is stirred, so that the efficiency of heating the material in the heat exchange tube 3 by high-temperature and high-pressure steam in the middle space is improved, the utilization rate of the steam-heated material is improved, meanwhile, the steam evaporated in the material can further heat and evaporate logistics, and the utilization rate of the steam-heated material is further improved.

Further, still including sleeve pipe 16 and backward flow mouth 18, the cover is equipped with sleeve pipe 16 on the heat exchanger 1 outer wall in middle part space, form a reposition of redundant personnel chamber 17 between sleeve pipe 16 and the heat exchanger 1 outer wall, be provided with backward flow mouth 18 on the sleeve pipe 16 outer wall, backward flow mouth 18 is linked together with reposition of redundant personnel chamber 17, fourth connecting tube 15 both ends communicate second gas outlet 102 and backward flow mouth 18 respectively, be located and seted up reposition of redundant personnel hole 19 on the heat exchanger 1 outer wall in reposition of redundant personnel chamber 17, reposition of redundant personnel hole 19 intercommunication reposition of redundant personnel chamber 17 and middle part space.

Steam evaporated from the materials enters the diversion cavity 17 through the return port 18, and then the steam in the middle space is uniformly stirred in an all-around manner through the diversion holes 19, so that the utilization rate of the steam-heated materials is further improved.

Further, still including solenoid valve 8, be provided with solenoid valve 8 on the liquid outlet 7, solenoid valve 8 guarantees that above-mentioned middle part space bottom has the comdenstion water liquid level of a take the altitude, and the comdenstion water liquid level is located between liquid outlet 7 and first gas outlet 6.

The control of the solenoid valve 8 prevents condensed liquid from flowing into the separator 10 through the first outlet port 6.

Further, the separator 10 includes a steam inlet 1001 and a steam outlet 1002, a second connecting pipe 13 is connected between the steam inlet 1001 and the first air outlet 6, and a third connecting pipe 14 is connected between the steam outlet 1002 and the inlet of the steam compressor 11.

Further, the vapor compressor 11 is an MVR vapor compressor 11.

Furthermore, the device also comprises a liquid level sensor and a controller, wherein the liquid level sensor is used for detecting the height of the liquid level of the condensed water;

if the height of the condensate liquid level is higher than the set value, the controller controls the electromagnetic valve 8 to discharge the condensate, and when the height of the condensate liquid level is within the set value, the controller controls the electromagnetic valve 8 to stop the liquid outlet 7.

The above-mentioned embodiments only express the preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be understood as the limitation of the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations, modifications and substitutions can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a MVR evaporation plant with thermal cycle function, includes the air inlet of heat exchanger, the feed inlet of heat exchanger upper end, the discharge gate of heat exchanger lower extreme, heat exchanger upper portion one side, the first gas outlet of heat exchanger lower part one side, the liquid outlet of heat exchanger lower part opposite side, the heat exchange tube of distribution in the heat exchanger, vapor compressor, first connecting tube, separator, second connecting tube and third connecting tube, its characterized in that:

the liquid outlet is located below the first gas outlet, two sealing blocks are arranged in the heat exchanger at intervals, the sealing blocks below the sealing blocks are located below the liquid outlet, the sealing blocks above the liquid outlet are located above the gas inlet, the heat exchange tube is arranged between the sealing blocks, the sealing blocks divide a space in the heat exchanger into an upper space, a middle space and a lower space, a lower port of the heat exchange tube is communicated with the lower space, an upper port of the heat exchange tube is communicated with the upper space, the upper space is communicated with the outside through the second gas outlet, the liquid distributor is arranged in the upper space, and materials entering from the feed inlet can be distributed on the inner wall of the heat exchange tube.

2. The MVR evaporation device with thermal cycling function as claimed in claim 1, wherein:

the gas inlet is communicated with the upper space through a first connecting pipeline, and the gas outlet is communicated with the upper space through a second connecting pipeline.

3. The MVR evaporation device with heat circulation function as claimed in claim 2, wherein:

still including sleeve pipe and backward flow mouth, the middle part space the cover is equipped with on the heat exchanger outer wall the sleeve pipe, the sleeve pipe with form a reposition of redundant personnel chamber between the heat exchanger outer wall, be provided with on the sleeve pipe outer wall the backward flow mouth, the backward flow mouth with the reposition of redundant personnel chamber is linked together, fourth connecting tube both ends communicate respectively the second gas outlet with the backward flow mouth is located reposition of redundant personnel intracavity the reposition of redundant personnel hole has been seted up on the heat exchanger outer wall, the reposition of redundant personnel hole intercommunication the reposition of redundant personnel chamber with the middle part space.

4. The MVR evaporation device with heat circulation function as claimed in claim 3, wherein:

the liquid outlet is provided with the electromagnetic valve, the electromagnetic valve ensures that the bottom of the middle space has a condensate liquid level with a certain height, and the condensate liquid level is located between the liquid outlet and the first gas outlet.

5. The MVR evaporation device with the function of thermal cycling according to claim 4, wherein:

the separator comprises a steam inlet and a steam outlet, the second connecting pipeline is connected between the steam inlet and the first air outlet, and the third connecting pipeline is connected between the steam outlet and the inlet of the steam compressor.

6. The MVR evaporation device with the function of thermal cycling according to claim 5, wherein:

the vapor compressor is an MVR vapor compressor.

7. The MVR evaporation device with heat circulation function as claimed in claim 6, wherein:

the device also comprises a liquid level sensor and a controller, wherein the liquid level sensor is used for detecting the height of the liquid level of the condensed water;