Zero-emission MVR (mechanical vapor recompression) equipment for treating heavy salt water
By designing the solution of split steam preheating and filtration components in the MVR equipment, the efficiency problem of MVR equipment when the water inlet conditions are poor or the temperature is not appropriate, and the effect of efficiently removing solid pollutants in high brine is achieved.
Patent Information
- Application Number
- CN202421229153.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-31
AI Technical Summary
When the water inlet conditions are poor or the water inlet temperature is too high or too low, existing MVR equipment can easily lead to a large amount of foam inside the evaporator, affecting the steam flow and evaporation efficiency, and making it difficult to effectively deal with solid pollutants in high brine.
A high-brine treatment zero-emission MVR equipment was designed to preheat the high-brine by diversion of steam to improve steam generation efficiency, and a filter component was set up in the pretreatment box to filter out solid pollutants and ensure stable water inlet. sex.
It effectively improves the steam generation efficiency during water treatment, ensures the stability of water inlet, and successfully removes solid pollutants in high brine through the filtration module, improving the overall treatment efficiency.
Smart Images
Figure CN222454620U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water treatment equipment, in particular to a zero-discharge MVR device for high-salt water treatment. Background Art
[0002] MVR equipment usually refers to MVR evaporator, which is a common water treatment evaporation equipment. The equipment uses low temperature and low pressure steam technology and clean energy to generate steam, separate the water in the medium, and can improve the thermal efficiency of steam by mechanically compressing the secondary steam, thereby achieving the purpose of energy saving. However, the operation effect of the evaporator is affected by many factors. When the water inlet conditions are not good, a large amount of foam may be generated inside the evaporator, affecting the flow of steam and reducing the evaporation efficiency. If the water inlet temperature is too high or too low, it will also affect the generation of steam and reduce the evaporation efficiency. Therefore, optimizing and controlling the water inlet conditions and preheating process of the evaporator are of great significance to improving the operation efficiency and evaporation effect of the evaporator. Utility Model Content
[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a zero-emission MVR equipment for treating high-salt water. The high-salt water is preheated by diverting steam to improve the steam generation efficiency in the water treatment process. When the high-salt water is preheated by steam, the condensed water after the steam is condensed can be effectively discharged to ensure that the high-salt water is effectively heated by steam, and the process can ensure the stability of water intake. In addition, it can also be used to filter solid pollutants in high-salt water during the water treatment process, and the filtered impurities are collected in the filter box for easy cleaning, which can effectively solve the problems in the background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-salt water treatment zero-emission MVR device, comprising an evaporator body, a pretreatment box and a transfer box, a concentrated liquid discharge pipe connected to its inner cavity is installed at the lower part of the side of the evaporator body, a steam discharge pipe connected to its inner cavity is installed at the upper part of the side of the evaporator body, a shunt pipe connected to the inner cavity of the transfer box is installed on the side of the steam discharge pipe, and a regulating valve is installed on the shunt pipe, a steam air inlet pipe connected to the inner cavity of the pretreatment box is installed on the side of the transfer box, and a filter assembly is arranged in the pretreatment box, a water inlet pipe connected to its inner cavity is installed on the upper part of the side of the pretreatment box, and a water guide pipe connected to the inner cavity of the evaporator body is installed on the side of the pretreatment box.
[0005] As a preferred technical solution of the utility model, an installation opening is provided at the top of the pretreatment box near the filter assembly, the filter assembly includes a filter box arranged at the installation opening and located in the pretreatment box, connecting openings are provided on the upper sides of the two sides of the filter box, multiple layers of filter plates are provided in the pretreatment box, and space is reserved between two adjacent filter plates, and a positioning plate for positioning the filter plate is provided in the pretreatment box.
[0006] As a preferred technical solution of the utility model, the top of the filter box is open, a sealing plate for sealing the opening is installed on the side of the filter box, and a lifting handle is fixed on the side of the sealing plate.
[0007] As a preferred technical solution of the utility model, a plurality of heat exchange tubes are arranged in the pretreatment box, and each heat exchange tube is arranged in a spiral shape, and the spiral direction of the heat exchange tubes is from bottom to top. A main pipeline is installed in the pretreatment box, and one end of the plurality of heat exchange tubes is installed on the side of the main pipeline and connected to the inner cavity of the main pipeline, and the other end of the heat exchange tube passes through and extends to the outside of the pretreatment box.
[0008] As a preferred technical solution of the utility model, a one-way valve is installed on the diversion pipe, and the one-way valve is located between the regulating valve and the transfer box.
[0009] As a preferred technical solution of the utility model, the diversion pipe and the steam inlet pipe are both located at the upper side of the transfer box, and a discharge pipe connected to the inner cavity of the transfer box is installed at the lower side of the transfer box.
[0010] Compared with the prior art, the beneficial effects of the utility model are:
[0011] 1. The high-salt water treatment zero-emission MVR equipment of the utility model example transports the high-salt water to be treated into the pretreatment box through the water inlet pipe. When the high-salt water entering the pretreatment box flows through the filter box, the filter plate installed in the filter box filters the solid pollutants therein, such as suspended matter, tiny particles, etc., and the filtered solid pollutants are stored in the filter box. When the filter plate needs to be cleaned or replaced, the filter box is taken out of the pretreatment box through the installation port, and then the sealing plate on the top of the filter box is removed, and the filter plate is taken out of the filter box for cleaning or replacement. At the same time, the personnel clean the solid pollutants accumulated in the filter box to facilitate the use of the filter assembly.
[0012] 2. In the example of the utility model, the high-salt water treatment zero-emission MVR equipment, the high-salt water is filtered by the filter assembly and then flows into the evaporator body through the water pipe installed on the side of the pretreatment box. The steam generated after the evaporator body is heated and evaporated is discharged through the steam discharge pipe to an externally arranged heater or compressor to perform secondary pressurization of the steam. When the steam flows in the steam discharge pipe, the regulating valve on the shunt pipe is opened, and part of the steam enters the transfer box through the shunt pipe. Thereafter, the steam enters the heat exchange pipe through the steam inlet pipe installed on the side of the transfer box to heat and pre-treat the high-salt water in the pretreatment box, so as to facilitate the subsequent treatment of the high-salt water through the evaporator body.
[0013] 3. In the zero-emission MVR equipment for treating high-salt water in the example of the utility model, when the steam flows in the heat exchange tube to preheat the high-salt water, part of the steam condenses when it is cold, and the condensed water flows into the transfer box through the heat exchange tube, so as to avoid the accumulation of condensed water in the heat exchange tube and affect the flow of steam in the heat exchange tube, thereby ensuring that the steam in the heat exchange tube can effectively preheat the high-salt water in the pretreatment box. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 This is a front view structural schematic diagram of the utility model;
[0016] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;
[0017] Figure 4 for Figure 2 A schematic diagram of the enlarged structure at B in the middle;
[0018] Figure 5 for Figure 2 Schematic diagram of the enlarged structure at point C in the middle.
[0019] In the figure: 1 evaporator body, 2 concentrate discharge pipe, 3 steam discharge pipe, 4 pretreatment box, 5 water inlet pipe, 6 filter box, 7 filter plate, 8 positioning plate, 9 sealing plate, 10 water guide pipe, 11 transfer box, 12 diversion pipe, 13 regulating valve, 14 check valve, 15 steam inlet pipe, 16 main pipeline, 17 heat exchange pipe, 18 discharge pipe. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-5 The utility model provides a technical solution: a zero-emission MVR device for treating high-salt water, comprising an evaporator body 1, a pretreatment box 4 and a transfer box 11. A concentrated liquid discharge pipe 2 connected to its inner cavity is installed at the lower side of the evaporator body 1. The concentrated liquid formed by the high-salt water in the evaporator body 1 after evaporation treatment is discharged to the outside through the concentrated liquid discharge pipe 2, which is convenient for further treatment. A steam discharge pipe 3 connected to its inner cavity is installed at the upper side of the evaporator body 1. The steam generated after the high-salt water is evaporated by the evaporator body 1 is discharged through the steam discharge pipe 3. A shunt pipe 1 connected to the inner cavity of the transfer box 11 is installed on the side of the steam discharge pipe 3. 2. The shunt pipe 12 is used to shunt out part of the steam to preheat the high-salt water, and a regulating valve 13 is installed on the shunt pipe 12. The regulating valve 13 is adjusted according to the water inlet amount, so as to adjust the diversion of the steam according to the water inlet amount. A steam inlet pipe 15 connected with the inner cavity of the pretreatment box 4 is installed on the side of the transfer box 11. The steam diverted to the transfer box 11 enters the pretreatment box 4 through the steam inlet pipe 15 to preheat the high-salt water, so as to avoid the low temperature of the high-salt water affecting the evaporation efficiency of the high-salt water, and the setting of the pretreatment box 4 can ensure the stability of the high-salt water inlet, and avoid the generation of a large amount of foam inside the evaporator due to poor water inlet, which affects the steam flow.
[0022] A water inlet pipe 5 connected to the inner cavity of the pretreatment box 4 is installed on the upper side of the pretreatment box 4, and a water guide pipe 10 connected to the inner cavity of the evaporator body 1 is installed on the side of the pretreatment box 4. A filter assembly is arranged in the pretreatment box 4, and a mounting port is opened at the top of the pretreatment box 4 near the filter assembly. The filter assembly includes a filter box 6 arranged at the mounting port and located in the pretreatment box 4. The mounting port facilitates the installation of the pretreatment box 4. The upper side of both sides of the filter box 6 is provided with a connecting port, which facilitates the high-salt water to flow into the filter box 6 and out of the filter box 6, and the connecting port is arranged at the upper side of the filter box 6 to improve In order to achieve the aggregation effect of solid pollutants in the filter box 6, a multi-layer filter plate 7 is arranged in the pretreatment box 4, and a space is reserved between two adjacent filter plates 7, and the space is used to aggregate the solid pollutants filtered and blocked by the filter plate 7. A positioning plate 8 for positioning the filter plate 7 is arranged in the pretreatment box 4, and the high-salt water to be treated is transported to the pretreatment box 4 through the water inlet pipe 5. When the high-salt water entering the pretreatment box 4 flows through the filter box 6, the filter plate 7 installed in the filter box 6 filters the solid pollutants therein, such as suspended matter, tiny particles, etc., and the filtered solid pollutants are stored in the filter box 6.
[0023] The top of the filter box 6 is open, and a sealing plate 9 for sealing the opening is installed on the side of the filter box 6. Preferably, the sealing plate 9 is fixed to the opening of the filter box 6 by screws, and a lifting handle is fixed on the side of the sealing plate 9. When the filter plate 7 needs to be cleaned or replaced, the filter box 6 is taken out of the pretreatment box 4 through the installation port, and then the sealing plate 9 on the top of the filter box 6 is removed, and the filter plate 7 is taken out of the filter box 6 for cleaning or replacement. At the same time, the personnel clean the solid pollutants accumulated in the filter box 6 to facilitate the use of the filter assembly.
[0024] A plurality of heat exchange tubes 17 are arranged in the pretreatment box 4, and each heat exchange tube 17 is arranged in a spiral shape to increase the contact area between steam and high-salt water, which is convenient for preheating the high-salt water by steam. The heat exchange tubes 17 are used to block the steam and the high-salt water, prevent the steam from re-condensing in the high-salt water, and ensure the treatment efficiency of the high-salt water. The spiral direction of the heat exchange tubes 17 is from bottom to top, which is convenient for the steam condensate to flow in the heat exchange tubes 17. The pretreatment box 4 is installed with a main pipeline 16, and one end of the plurality of heat exchange tubes 17 is installed on the side of the main pipeline 16 and connected to the inner cavity of the main pipeline 16, and the other end of the heat exchange tube 17 passes through and extends to the pretreatment box. 4, the high-salt water is filtered by the filter assembly and flows into the evaporator body 1 through the water guide pipe 10 installed on the side of the pretreatment box 4. The steam generated after being heated and evaporated by the evaporator body 1 is discharged through the steam discharge pipe 3 to the external heater or compressor to perform secondary pressurization of the steam. When the steam flows in the steam discharge pipe 3, the regulating valve 13 on the shunt pipe 12 is opened, and part of the steam enters the transfer box 11 through the shunt pipe 12. Then, the steam enters the heat exchange pipe 17 through the steam inlet pipe 15 installed on the side of the transfer box 11 to heat and pre-treat the high-salt water in the pretreatment box 4, so as to facilitate the subsequent treatment of the high-salt water through the evaporator body 1.
[0025] A one-way valve 14 is installed on the shunt pipe 12 , and the one-way valve 14 is located between the regulating valve 13 and the transfer box 11 . The one-way valve 14 prevents steam or condensed water from flowing back into the steam discharge pipe 3 .
[0026] The shunt pipe 12 and the steam inlet pipe 15 are both located on the upper side of the transfer box 11 to facilitate the flow of steam. A discharge pipe 18 connected to its inner cavity is installed on the lower side of the transfer box 11 to discharge the condensed water accumulated in the transfer box 11 to the outside.
[0027] When using:
[0028] The high-salt water to be treated is transported to the pretreatment box 4 through the water inlet pipe 5. When the high-salt water entering the pretreatment box 4 flows through the filter box 6, the filter plate 7 installed in the filter box 6 filters the solid pollutants therein, such as suspended matter, tiny particles, etc., and the filtered solid pollutants are stored in the filter box 6. When the filter plate 7 needs to be cleaned or replaced, the filter box 6 is taken out of the pretreatment box 4 through the installation port, and then the sealing plate 9 on the top of the filter box 6 is removed, and the filter plate 7 is taken out of the filter box 6 for cleaning or replacement. At the same time, the personnel clean the solid pollutants accumulated in the filter box 6 to facilitate the use of the filter assembly;
[0029] After being filtered by the filter assembly, the high-salt water flows into the evaporator body 1 through the water guide pipe 10 installed on the side of the pretreatment box 4. The steam generated after being heated and evaporated by the evaporator body 1 is discharged through the steam discharge pipe 3 to an externally arranged heater or compressor to perform secondary pressurization of the steam. When the steam flows in the steam discharge pipe 3, the regulating valve 13 on the shunt pipe 12 is opened, and part of the steam enters the transfer box 11 through the shunt pipe 12. After that, the steam enters the heat exchange pipe 17 through the steam inlet pipe 15 installed on the side of the transfer box 11 to heat and pre-treat the high-salt water in the pretreatment box 4, so as to facilitate the subsequent treatment of the high-salt water through the evaporator body 1;
[0030] When steam flows in the heat exchange tube 17 to preheat the high-salt water, part of the steam condenses when it is cold, and the condensed water flows into the transfer box 11 through the heat exchange tube 17, so as to avoid the accumulation of condensed water in the heat exchange tube 17 affecting the flow of steam in the heat exchange tube 17, thereby ensuring that the steam in the heat exchange tube 17 effectively preheats the high-salt water in the pretreatment box 4.
[0031] The undisclosed parts in the present utility model are all prior art, and their specific structures, materials and working principles are not described in detail. Although the embodiments of the present utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the attached claims and their equivalents.
Claims
1. A zero-discharge MVR device for treating high-salt water, comprising an evaporator body (1), a pretreatment tank (4) and a transfer tank (11), characterized in that: A concentrated liquid discharge pipe (2) communicating with the inner cavity of the evaporator body (1) is installed at the lower part of the side surface of the evaporator body (1); a steam discharge pipe (3) communicating with the inner cavity of the evaporator body (1) is installed at the upper part of the side surface of the evaporator body (1); a shunt pipe (12) communicating with the inner cavity of the transfer box (11) is installed at the side surface of the steam discharge pipe (3); a regulating valve (13) is installed on the shunt pipe (12); a steam air inlet pipe (15) communicating with the inner cavity of the pretreatment box (4) is installed at the side surface of the transfer box (11); a filter assembly is arranged in the pretreatment box (4); a water inlet pipe (5) communicating with the inner cavity of the pretreatment box (4) is installed at the upper part of the side surface of the pretreatment box (4); and a water guide pipe (10) communicating with the inner cavity of the evaporator body (1) is installed at the side surface of the pretreatment box (4).
2. The zero-discharge MVR equipment for high-salt water treatment according to claim 1 is characterized in that: The top of the pretreatment box (4) is provided with an installation opening near the filter assembly, the filter assembly comprises a filter box (6) arranged at the installation opening and located inside the pretreatment box (4), the upper parts of the sides of both sides of the filter box (6) are provided with communication openings, the pretreatment box (4) is provided with multiple layers of filter plates (7), and a space is reserved between two adjacent filter plates (7), and the pretreatment box (4) is provided with a positioning plate (8) for positioning the filter plates (7).
3. The zero-discharge MVR equipment for high-salt water treatment according to claim 2 is characterized in that: The top of the filter box (6) is open, and a sealing plate (9) for sealing the open top is installed on the side of the filter box (6), and a lifting handle is fixed on the side of the sealing plate (9).
4. The zero-discharge MVR equipment for high-salt water treatment according to claim 1 is characterized in that: A plurality of heat exchange tubes (17) are arranged in the pretreatment box (4), and each heat exchange tube (17) is arranged in a spiral shape, and the spiral direction of the heat exchange tube (17) is from bottom to top. A main pipeline (16) is installed in the pretreatment box (4), and one end of the plurality of heat exchange tubes (17) is installed on the side of the main pipeline (16) and communicates with the inner cavity of the main pipeline (16), and the other end of the heat exchange tube (17) passes through and extends to the outside of the pretreatment box (4).
5. The zero-discharge MVR equipment for high-salt water treatment according to claim 1 is characterized in that: A one-way valve (14) is installed on the diverter pipe (12), and the one-way valve (14) is located between the regulating valve (13) and the transfer box (11).
6. The zero-discharge MVR equipment for high-salt water treatment according to claim 1 is characterized in that: The diversion pipe (12) and the steam intake pipe (15) are both located at the upper side of the transfer box (11), and a discharge pipe (18) communicating with the inner cavity of the transfer box (11) is installed at the lower side of the transfer box (11).