CN214059966U

CN214059966U - Micro-power MVR evaporation concentration device

Info

Publication number: CN214059966U
Application number: CN202022874883.2U
Authority: CN
Inventors: 胡霞国; 宋善祥; 江冰雨; 周卫国; 雷新海
Original assignee: Greatall Power Co ltd
Current assignee: Greatall Power Co ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-08-27
Anticipated expiration: 2030-12-04

Abstract

The utility model is suitable for the sewage treatment field, provides a micro-power MVR evaporation concentration device, including pre-heater, evaporimeter, separator and MVR compressor, be equipped with the silk screen demister in the separator, evaporimeter bottom exit end communicates to pre-heater comdenstion water entry end, pre-heater waste water exit end communicates to evaporimeter material entry end, evaporimeter material exit end communicates to separator lateral wall entry end, separator bottom exit end communicates to the circulation feed inlet of evaporimeter bottom, install V type ball valve on the pipeline between the circulation feed inlet of separator bottom exit end and evaporimeter bottom, separator top exit end communicates to evaporimeter steam entry end through the MVR compressor, the evaporimeter bottom still is equipped with the concentrate exit end, and the device is with low costs, only has a mobile device, can reduce the energy consumption by a wide margin, the screen demister is internally provided with a supporting and cleaning pipe group, and can be used for periodically cleaning the screen block, so that the screen demister is convenient to operate.

Description

Micro-power MVR evaporation concentration device

Technical Field

The utility model belongs to the sewage treatment field especially relates to a micro-power MVR evaporation concentration device.

Background

The high-salinity wastewater refers to wastewater with the total salt mass fraction of at least 1%, which is mainly from chemical plants, petroleum and natural gas collection and processing and the like, and contains various substances (including salt, oil, organic heavy metals and radioactive substances). The high-salinity wastewater has wide generation ways, the water quantity is increased year by year, and the high-salinity wastewater has great harm to the environment. The biological method is adopted for treatment, and high-concentration salt substances have an inhibiting effect on microorganisms; the physicochemical method is adopted for treatment, so the investment is large, the operation cost is high, and the expected purification effect is difficult to achieve. The prior effective triple-effect evaporation method for treating high-salinity wastewater can achieve the treatment effect, but has the defects of high energy consumption, more power equipment and the like. In addition, most of the existing separators adopt a mode of wire mesh defoaming, but most of the separators have complex structures and are troublesome to disassemble, so that the problem that the wire mesh block is inconvenient to clean is caused.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, an object of the utility model is to provide a little power MVR evaporation concentration device aims at solving that the silk screen demister in the current evaporation plant energy consumption is high, the power equipment is many and the separator dismantles trouble, washs inconvenient technical problem.

The utility model adopts the following technical scheme:

the micro-power MVR evaporation concentration device comprises a preheater, an evaporator, a separator and an MVR compressor, wherein a wire mesh demister is arranged in the separator, the outlet end of the bottom of the evaporator is communicated to the condensed water inlet end of the preheater, the waste water outlet end of the preheater is communicated to the material inlet end of the evaporator, the material outlet end of the evaporator is communicated to the side wall inlet end of the separator, the outlet end of the bottom of the separator is communicated to the circulating feed inlet at the bottom of the evaporator, a V-shaped ball valve is arranged on a pipeline between the outlet end of the bottom of the separator and the circulating feed inlet at the bottom of the evaporator, the outlet end of the top of the separator is communicated to the steam inlet end of the evaporator through the MVR compressor, and.

Further, the silk screen demister comprises an upper grid plate, a silk screen block, a supporting cleaning pipe group and a lower grid plate, the silk screen block is fixed between the upper grid plate and the lower grid plate, and the supporting cleaning pipe group is embedded into the silk screen block and is fixed to the inner wall of the separator.

Further, the supporting and cleaning pipe group comprises a circular pipe, the inner side of the circular pipe is communicated with a grid pipe, and a plurality of uniformly distributed cleaning holes are formed in the upper side and the lower side of the circular pipe and the grid pipe.

Furthermore, a liquid outlet is also arranged at the bottom of the separator.

The utility model has the advantages that: the utility model provides a micro-power MVR evaporation concentration device, the whole device only has one movable device of an MVR compressor, which not only can greatly reduce the energy consumption, but also can save the cost, reduce the fault points and solve the problems of high energy consumption and more power devices of the existing evaporation device; a silk screen demister is arranged in the separator, so that the foam can be effectively removed, and the quality of condensed water is ensured; the supporting and cleaning pipe group is arranged in the wire mesh demister, so that the wire mesh block can be cleaned regularly, the operation is convenient, the service life of the wire mesh demister is prolonged, and the problems of troublesome disassembly and inconvenient cleaning of the conventional wire mesh demister are solved; the supporting and cleaning pipe group can play a supporting role, liquid is uniformly distributed, and the washing area of the wire mesh block is increased.

Drawings

Fig. 1 is a structural diagram of a micro-power MVR evaporation and concentration device provided by an embodiment of the present invention;

FIG. 2 is a block diagram of a wire mesh demister according to an embodiment of the present invention;

fig. 3 is a structural diagram of a supporting washing pipe set according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In order to explain the technical solution of the present invention, the following description is made by using specific examples.

Fig. 1 shows the structure of a micro-power MVR evaporation and concentration device provided by an embodiment of the present invention, and only the parts related to the embodiment of the present invention are shown for convenience of description.

As shown in fig. 1, the micro-power MVR evaporation concentration device provided by the embodiment includes a preheater 1, an evaporator 2, a separator 3 and an MVR compressor 4, a wire mesh demister 5 is arranged in the separator 3, the outlet end at the bottom of the evaporator 2 is communicated with the condensed water inlet end of the preheater 1, the waste water outlet end of the preheater 1 is communicated with the material inlet end of the evaporator 2, the material outlet end of the evaporator 2 is communicated with the inlet end of the side wall of the separator 3, the outlet end at the bottom of the separator 3 is communicated with the circulation feed inlet at the bottom of the evaporator 2, a V-shaped ball valve 6 is arranged on a pipeline between the outlet end at the bottom of the separator 3 and the circulation feed inlet at the bottom of the evaporator 2, the outlet end at the top of the separator 3 is communicated with the steam inlet end of the evaporator 2 through the MVR compressor 4, and the bottom of the evaporator 2 is further provided with a concentrated solution outlet end.

In the embodiment, the whole device only has one mobile device of the MVR compressor, so that not only can the energy consumption be greatly reduced, but also the cost can be saved, and the fault points can be reduced; the preheater adopts a double-flow plate heat exchanger and a herringbone corrugated plate, and the corrugation angle is 60 degrees; the evaporator adopts a vertical thermosyphon heat exchanger, the material passes through a tube pass, and the steam passes through a shell pass; the upper part of the separator is provided with the wire mesh demister, so that the foam can be effectively removed, and the quality of the condensed water is ensured; install V type ball valve on the pipeline between the circulation feed inlet of separator bottom exit end and evaporimeter bottom, can effectively adjust evaporimeter inlet resistance, control evaporimeter export material vaporization fraction, more specifically, evaporimeter export material vaporization fraction control is at 2.5% -12%, can guarantee that the evaporation is steadily gone on.

As shown in fig. 2, the wire mesh demister 5 comprises an upper grid plate 7, a wire mesh block 8, a supporting and cleaning pipe group 9 and a lower grid plate 10, wherein the wire mesh block 8 is fixed between the upper grid plate 7 and the lower grid plate 10, and the supporting and cleaning pipe group 9 is embedded in the wire mesh block 8 and fixed to the inner wall of the separator 3.

As a concrete structure, the inner wall of the separator 3 is provided with a circle of support rings 14, the outer side of the circular pipe 11 is provided with a circle of wing plates 15, and the peripheries of the wing plates 15 are installed on the support rings 14 through a plurality of folding plates 16. The outer side of the circular tube 11 is also communicated with a water inlet pipe 17, and the water inlet pipe 17 extends out of the side wall of the separator 3.

As shown in fig. 3, the supporting and cleaning pipe group 9 includes a circular pipe 11, the inner side of the circular pipe 11 is communicated with a grid pipe 12, and a plurality of cleaning holes 13 are uniformly distributed on the upper and lower sides of the circular pipe 11 and the grid pipe 12. The supporting and cleaning pipe set can play a supporting role, the arrangement of the circular pipes and the grid pipe network can also ensure the uniform distribution of liquid, and the flushing area of the wire mesh block is increased.

When the silk screen demister used for a long time, the accessible supported the scavenge pipe group and washd it, during concrete implementation, led to water to the inlet tube, rivers evenly distributed was intraductal to pipe and graticule mesh to wash the silk screen piece through the purge hole of upper and lower both sides, convenient operation has improved the life of silk screen demister.

The bottom of the separator 3 is also provided with a liquid outlet, a valve is arranged at the position of the liquid outlet, and the liquid outlet is used for discharging cleaning wastewater generated by cleaning the wire mesh block.

This device during operation, feeding waste water gets into the evaporimeter after condensate water pre-heater preheats and carries out the circulation evaporation, the evaporimeter adopts the principle of thermosyphon, liquid in the evaporimeter becomes gas-liquid mixture after being heated, density diminishes, get into the separator middle part from evaporimeter upper portion and carry out the vapour-liquid separation, and the liquid of separator bottom is great because of density, lean on the automatic flow direction evaporimeter of pressure differential, the material passes through the separator middle part in proper order like this, the separator bottom, the evaporimeter, the separator middle part, form a natural circulation, the separator liquid is constantly heated, the vaporization. The secondary steam generated by evaporation enters the evaporator for reuse after being heated and pressurized by the MVR compressor from the top of the separator, the condensed water generated by evaporation is discharged after exchanging heat with the feeding wastewater to recover energy, and the concentrated solution is pressed out of the system by compressed air after reaching the concentration. In the process, the system is greatly energy-saving due to the repeated utilization of steam, the full recovery of condensed water heat and low energy consumption of the movable equipment.

In summary, the utility model provides a micro-power MVR evaporation concentration device, the whole device only has one movable device of MVR compressor, which not only can greatly reduce the energy consumption, but also can save the cost, reduce the fault points, and solve the problems of high energy consumption and more power devices of the existing evaporation device; a silk screen demister is arranged in the separator, so that the foam can be effectively removed, and the quality of condensed water is ensured; the supporting and cleaning pipe group is arranged in the wire mesh demister, so that the wire mesh block can be cleaned regularly, the operation is convenient, the service life of the wire mesh demister is prolonged, and the problems of troublesome disassembly and inconvenient cleaning of the conventional wire mesh demister are solved; the supporting and cleaning pipe group can play a supporting role, liquid is uniformly distributed, and the washing area of the wire mesh block is increased.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The micro-power MVR evaporation concentration device is characterized by comprising a preheater, an evaporator, a separator and an MVR compressor, wherein a wire mesh demister is arranged in the separator, the outlet end of the bottom of the evaporator is communicated to the condensed water inlet end of the preheater, the waste water outlet end of the preheater is communicated to the material inlet end of the evaporator, the material outlet end of the evaporator is communicated to the inlet end of the side wall of the separator, the outlet end of the bottom of the separator is communicated to the circulating feed inlet at the bottom of the evaporator, a V-shaped ball valve is arranged on a pipeline between the outlet end of the bottom of the separator and the circulating feed inlet at the bottom of the evaporator, the outlet end of the top of the separator is communicated to the steam inlet end of the evaporator through the MVR compressor, and the bottom of the evaporator is also provided with a concentrated solution outlet end.

2. The micropower MVR evaporative concentration device of claim 1, wherein the wire mesh demister comprises an upper grid plate, a wire mesh block, a supporting cleaning tube set, and a lower grid plate, the wire mesh block is fixed between the upper grid plate and the lower grid plate, and the supporting cleaning tube set is embedded in the wire mesh block and fixed to the inner wall of the separator.

3. The micropower MVR evaporation and concentration device according to claim 2, wherein the supporting and cleaning pipe group comprises a circular pipe, the inner side of the circular pipe is communicated with a grid pipe, and a plurality of cleaning holes are uniformly distributed on the upper side and the lower side of the circular pipe and the grid pipe.

4. The apparatus according to claim 3, wherein the bottom of the separator is further provided with a drain.