CN219449377U - Concentrated solution evaporation treatment device by landfill leachate membrane method - Google Patents
Concentrated solution evaporation treatment device by landfill leachate membrane method Download PDFInfo
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- CN219449377U CN219449377U CN202222644106.8U CN202222644106U CN219449377U CN 219449377 U CN219449377 U CN 219449377U CN 202222644106 U CN202222644106 U CN 202222644106U CN 219449377 U CN219449377 U CN 219449377U
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Abstract
The utility model relates to a concentrated solution evaporation treatment device for a landfill leachate membrane method, which mainly comprises a preheating unit, an evaporation unit and a steam treatment unit, wherein the preheating unit comprises a preheating container and a heat exchange tube, the evaporation unit comprises an evaporation tank, an outer jacket is arranged on the outer side of the evaporation tank, an evaporation cavity is arranged in the evaporation tank, the heat exchange tube is communicated with the evaporation tank through a liquid inlet tube, a liquid inlet pump for pumping concentrated solution to the evaporation cavity is arranged on the liquid inlet tube, and a treated liquid outlet is arranged at the bottom of the evaporation tank; the steam treatment unit comprises a condenser, a gas collecting hood and a sucking pump, wherein the gas collecting hood is buckled at the top of the evaporation tank and is in an inverted funnel shape with a small upper part and a large lower part, the gas collecting hood is connected with an air inlet of the condenser through a sucking pipe, the sucking pump is positioned on the sucking pipe, and a coolant outlet of the condenser is communicated with the preheating container through a return pipeline.
Description
Technical Field
The utility model relates to the technical field of landfill leachate treatment, in particular to a landfill leachate membrane method concentrated solution evaporation treatment device.
Background
The garbage percolate is derived from water, organic matter decomposition water, rain and snow water and other water contained in garbage in a garbage landfill, and the conventional treatment modes include a biochemical method, a membrane method, a Dusheng ion exchange method and the like. In the membrane separation process, under a certain pressure, when the stock solution flows through the surface of the membrane, a plurality of tiny micropores densely distributed on the surface of the membrane only allow water and small molecular substances to pass through to become permeate, and substances with the volume larger than the micro pore diameter on the surface of the membrane in the stock solution are trapped on the liquid inlet side of the membrane to become concentrated solution, so that the purposes of separating and concentrating the stock solution are realized. The concentrated solution generated in the garbage leachate membrane method treatment process becomes a difficult problem in water treatment due to the characteristics of complex components, higher concentration and the like, and the evaporation treatment is one of the concentrated solution decrement treatment methods, namely the volume of the concentrated solution is reduced to 2-10% under certain pressure and temperature conditions, so that the existing evaporation equipment has the following problems that the heat contained in the steam generated by evaporation is not well recycled, and the energy waste exists; most evaporation equipment is heated through the heating medium of outside jacket, and the internal and external uneven heating of membrane concentrate, evaporation efficiency is lower.
Disclosure of Invention
The utility model aims to provide a landfill leachate membrane method concentrated solution evaporation treatment device which can solve the technical problem that the steam heat generated in the existing concentrated solution evaporation process is not well utilized.
The utility model provides the following technical scheme: the evaporation treatment device for the concentrated solution by the landfill leachate membrane method mainly comprises a preheating unit, an evaporation unit and a steam treatment unit, wherein the preheating unit comprises a preheating container and a heat exchange tube positioned in the preheating container, the heat exchange tube is used for allowing concentrated solution to pass through, the evaporation unit comprises an evaporation tank, an outer jacket used for allowing heating medium to flow in/out is arranged on the outer side of the evaporation tank, an evaporation cavity used for allowing concentrated solution to flow in is arranged in the evaporation tank, the heat exchange tube is communicated with the evaporation tank through a liquid inlet tube, a liquid inlet pump used for pumping the concentrated solution into the evaporation cavity is arranged on the liquid inlet tube, and a treated liquid outlet used for allowing the evaporated concentrated solution to flow out is formed in the bottom of the evaporation tank; the steam treatment unit comprises a condenser, a gas collecting hood and an air pump, wherein the gas collecting hood is buckled at the top of the evaporation tank and is communicated with the evaporation cavity, the gas collecting hood is in an inverted funnel shape with a small upper part and a large lower part, the gas collecting hood is connected with an air inlet of the condenser through an air extraction pipe, the air pump is positioned on the air extraction pipe, a coolant outlet of the condenser is communicated with the preheating container through a return pipeline, and coolant for preheating the concentrated solution in the heat exchange pipe is conveyed into the preheating container.
The beneficial effects are that: when the concentrated solution is treated by the utility model, the concentrated solution is evaporated in the evaporation tank under the action of the heating medium of the jacket at the outer side, the generated steam moves upwards, enters the condenser for condensation through the gas collecting hood and the gas exhaust pipe under the action of the gas exhaust pump, the temperature of the heat released in the process of condensing the coolant absorbing the steam rises, and enters the preheating container through the return pipeline, so that the concentrated solution is preheated in the previous working procedure of the evaporation unit, the heat contained in the steam is fully utilized, the energy utilization rate and the evaporation efficiency are improved, and the problem of energy waste is solved.
Further, the heat exchange tube is spiral.
The beneficial effects are that: the heat exchange area is large, and the concentrated solution is fully preheated.
Further, a central heat exchange cylinder is arranged in the middle of the inside of the evaporation tank, the upper end and the lower end of the central heat exchange cylinder are plugged, the evaporation cavity is positioned between the outer jacket and the central heat exchange cylinder and is an annular cavity, and a plurality of communicating pipes are connected between the central heating cylinder and the outer jacket.
The beneficial effects are that: the inner side and the outer side of the concentrated solution in the evaporating cavity are respectively subjected to the double heating actions of the central heat exchange cylinder and the outer jacket, so that the concentrated solution is heated comprehensively and uniformly, the evaporating speed is increased, and the evaporating efficiency is improved.
Further, the evaporation unit comprises a stirring mechanism, the stirring mechanism mainly comprises a driving motor and a stirring shaft, the driving motor is arranged on the outer side of the bottom of the evaporation tank, the stirring shaft comprises a middle shaft and a plurality of stirring rods arranged on the outer side of the middle shaft, the stirring shaft is positioned in the stirring cavity, and the middle shaft extends out of the evaporation tank and is connected with the output end of the driving motor.
The beneficial effects are that: the concentrated solution is stirred and mixed after the stirring mechanism is driven, so that the concentrated solution is heated uniformly and has uniform temperature.
Further, the intermediate shaft is rotatably connected with the bottom of the stirring tank through a bearing.
The beneficial effects are that: the central shaft is supported by the stirring tank to rotate, so that the stirring shaft is ensured to stably rotate.
Drawings
FIG. 1 is a schematic diagram of a specific example 1 of a landfill leachate membrane method concentrate evaporation treatment device according to the present utility model;
reference numerals: 11-preheating the container; 12-heat exchange tubes; 2-an evaporation tank; 21-an outer jacket; 22-a central heat exchange cylinder; 23-an evaporation chamber; 24-communicating pipe; 25-a heating medium liquid inlet; 26-a heating medium outlet; 27-a treated liquid outlet; 28-driving a motor; 29-a stirring shaft; 3-a liquid inlet pipe; 4-a liquid inlet pump; 5-a gas collecting hood; 6, an exhaust pipe; 7-an air extracting pump; 8-a condenser; 81-a coolant inlet; 82-a coolant outlet; 83-condenser inlet; 84-condenser outlet; 9-a liquid collecting tank; 10-return pipe.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings.
Specific example 1 of a landfill leachate membrane method concentrated solution evaporation treatment device of the utility model:
as shown in fig. 1, the concentrated solution evaporation treatment device for the landfill leachate membrane method mainly comprises a preheating unit, an evaporation unit and a steam treatment unit, wherein the preheating unit is positioned at the front side of the evaporation unit and comprises a preheating container 11 and a heat exchange tube 12, the heat exchange tube 12 is positioned in the preheating container 11 and is used for allowing concentrated solution to pass through, and the heat exchange tube 12 is spiral.
The evaporation unit mainly comprises an evaporation tank 2, an outer jacket 21 is arranged on the outer side of the evaporation tank 2, a central heat exchange cylinder 22 is arranged in the middle of the inner portion of the evaporation tank 2, a heating medium liquid inlet 25 and a heating medium liquid outlet 26 are formed in the outer portion of the evaporation tank 2 and used for allowing heating medium to enter and exit the outer jacket 21 respectively, the upper end and the lower end of the central heat exchange cylinder 22 are plugged, a plurality of communicating pipes 24 are connected between the central heating cylinder 22 and the outer jacket 21, an evaporation cavity 23 used for allowing concentrated solution to perform heat exchange reaction is located between the central heating cylinder 22 and the outer jacket 21 and is an annular cavity, a heat exchange pipe 12 is communicated with the evaporation cavity 23 through a liquid inlet pump 4 used for pumping concentrated solution to the evaporation cavity 23, a treated liquid outlet 27 is formed in the bottom of the evaporation tank, and the evaporated concentrated solution can be discharged through the treated liquid outlet 27. In order to increase the heated uniformity degree in the evaporation process of the concentrated solution and keep the temperature consistent, the evaporation unit is also provided with a stirring mechanism which is provided with two groups and mainly comprises a driving motor 28 and a stirring shaft 29, the driving motor 28 is fixed on the outer side of the bottom of the evaporation tank 2, the stirring shaft 29 comprises an intermediate shaft and a plurality of stirring rods fixed on the outer side of the intermediate shaft, the stirring shaft 29 is positioned in the evaporation cavity 23, the lower end of a central shaft extends out of the evaporation tank 2 and is connected with the output end of the driving motor 28, and the lower end of the central shaft is rotationally connected with the bottom of the evaporation tank 2 through a bearing.
The moisture in the concentrated solution is evaporated into steam after being heated by a heating medium, the steam treatment unit is used for carrying out post-treatment on the steam, and the steam treatment unit comprises a gas collecting hood 5, an exhaust pipe 6, an exhaust pump 7, a condenser 8 and a liquid collecting tank 9, wherein the gas collecting hood 5 is small in upper part and large in lower part, is covered at the top of the evaporation tank 2 in an inverted funnel shape and is communicated with the evaporation cavity 23. The condenser 8 is used for condensing steam, and is provided with a coolant inlet 81, a coolant outlet 82, a condenser air inlet 83 and a condenser liquid outlet 84, wherein the gas collecting hood 5 is connected with the condenser air inlet 83 through the exhaust pipe 6, the condenser liquid outlet 84 is connected with the liquid collecting tank 9, and the coolant outlet 82 is connected with the preheating container 11 through the return pipe 10. During the use, steam is acted by the air pump 7 and passes through the gas collecting hood 5 and the air extracting pipe 6, and enters the condenser through the air inlet 83 of the condenser to release heat with steam in the heat exchange process of the coolant, the generated condensed water is collected into the liquid collecting tank 9, and the coolant absorbs the heat of the steam and flows into the preheating container 11 through the return pipe 10 to preheat the concentrated solution in the heat exchange pipe 12.
The process for treating the concentrated solution by using the concentrated solution evaporation treatment device based on the landfill leachate membrane method is as follows: the concentrated solution enters an evaporation cavity 23 of an evaporation tank 2, is heated and evaporated under the action of heating mediums of an inner central heat exchange cylinder 22 and an outer jacket 21 on the outer side, the generated steam enters a condenser 8 through a gas collecting hood 5 and an exhaust pipe 6, condensed water is generated after condensation and collected into a liquid collecting pipe 9 for recovery, heat released in the condensation process is absorbed by a coolant, the coolant flows into a preheating container 11 through a backflow pipe to preheat the concentrated solution, the heat contained in the steam is recovered and reused, and the subsequent evaporation of the concentrated solution is promoted while the energy utilization rate is improved; in the evaporation process, the concentrated solution is stirred while being heated in an inner-outer dual heating mode, heated uniformly, and has high temperature consistency, high evaporation speed and high evaporation efficiency.
The above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.
Claims (5)
1. The concentrated solution evaporation treatment device for the garbage leachate membrane method is characterized by mainly comprising a preheating unit, an evaporation unit and a steam treatment unit, wherein the preheating unit comprises a preheating container and a heat exchange tube positioned in the preheating container, the heat exchange tube is used for allowing concentrated solution to pass through, the evaporation unit comprises an evaporation tank, an outer jacket for allowing a heating medium to flow in/out is arranged on the outer side of the evaporation tank, an evaporation cavity for allowing the concentrated solution to flow in is arranged in the evaporation tank, the heat exchange tube is communicated with the evaporation tank through a liquid inlet tube, a liquid inlet pump for pumping the concentrated solution into the evaporation cavity is arranged on the liquid inlet tube, and a treated liquid outlet for allowing the concentrated solution to flow out after evaporation is arranged at the bottom of the evaporation tank; the steam treatment unit comprises a condenser, a gas collecting hood and an air pump, wherein the gas collecting hood is buckled at the top of the evaporation tank and is communicated with the evaporation cavity, the gas collecting hood is in an inverted funnel shape with a small upper part and a large lower part, the gas collecting hood is connected with an air inlet of the condenser through an air extraction pipe, the air pump is positioned on the air extraction pipe, a coolant outlet of the condenser is communicated with the preheating container through a return pipeline, and coolant for preheating the concentrated solution in the heat exchange pipe is conveyed into the preheating container.
2. The landfill leachate membrane method concentrated solution evaporation treatment device according to claim 1, wherein the heat exchange tube is spiral.
3. The device for evaporating concentrated solution by a landfill leachate membrane method according to claim 1 or 2, wherein a central heat exchange cylinder is arranged in the middle of the inside of the evaporating pot, the upper end and the lower end of the central heat exchange cylinder are plugged, the evaporating cavity is positioned between the outer jacket and the central heat exchange cylinder and is an annular cavity, and a plurality of communicating pipes are connected between the central heat exchange cylinder and the outer jacket.
4. The device for evaporating concentrated solution by a landfill leachate membrane method according to claim 3, wherein the evaporating unit comprises an agitating mechanism, the agitating mechanism mainly comprises a driving motor and an agitating shaft, the driving motor is arranged on the outer side of the bottom of the evaporating pot, the agitating shaft comprises an intermediate shaft and a plurality of agitating rods arranged on the outer side of the intermediate shaft, the agitating shaft is positioned in the agitating cavity, and the intermediate shaft extends out of the evaporating pot and is connected with the output end of the driving motor.
5. The device for evaporating concentrated solution by a landfill leachate membrane method according to claim 4, wherein the intermediate shaft is rotatably connected with the bottom of the stirring tank through a bearing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222644106.8U CN219449377U (en) | 2022-10-09 | 2022-10-09 | Concentrated solution evaporation treatment device by landfill leachate membrane method |
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| CN202222644106.8U CN219449377U (en) | 2022-10-09 | 2022-10-09 | Concentrated solution evaporation treatment device by landfill leachate membrane method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117122940A (en) * | 2023-10-27 | 2023-11-28 | 深圳市中瑞远博智能系统有限公司 | MVR concentration equipment of low energy consumption |
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- 2022-10-09 CN CN202222644106.8U patent/CN219449377U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117122940A (en) * | 2023-10-27 | 2023-11-28 | 深圳市中瑞远博智能系统有限公司 | MVR concentration equipment of low energy consumption |
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