CN218145931U - Direct contact type evaporator for landfill leachate membrane concentrated solution - Google Patents
Direct contact type evaporator for landfill leachate membrane concentrated solution Download PDFInfo
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- CN218145931U CN218145931U CN202221646469.9U CN202221646469U CN218145931U CN 218145931 U CN218145931 U CN 218145931U CN 202221646469 U CN202221646469 U CN 202221646469U CN 218145931 U CN218145931 U CN 218145931U
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- gas distribution
- evaporator
- distribution pipe
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- landfill leachate
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Abstract
The utility model discloses a direct contact evaporimeter for landfill leachate membrane concentrate, including the evaporimeter body, the embedded combustion chamber of installing in evaporimeter body middle part, the exhanst gas outlet has been seted up to evaporimeter body top one side, the inside position that is located the liquid level below of landfill leachate membrane concentrate of evaporimeter body transversely is provided with the gas distribution layer, the combustion chamber bottom is connected with first gas distribution nest of tubes and second gas distribution nest of tubes. The utility model discloses a direct contact evaporimeter for landfill leachate membrane concentrate not only can be more effectual carry out the breakage to the bubble, can also optimize the gas distribution homogeneity of small bubble, and reinforcing heat transfer effect can also be effectual solution simultaneously because of the hardened problem of intractable of the deposit of crystal in the evaporation process, improves the performance and the increase of service cycle of equipment.
Description
Technical Field
The utility model belongs to the technical field of the technique that landfill leachate membrane concentrate was handled and specifically relates to a direct contact evaporimeter for landfill leachate membrane concentrate is related to.
Background
Evaporation is used as an effective mode for treating high-salinity wastewater such as percolate film concentrated solution, different gas distribution structures of the high-salinity wastewater have great influence on evaporation efficiency, the traditional result is in the form of a gas distribution pipe or a gas distribution plate, the gas distribution pipe with a large aperture causes large bubbles, the liquid level is easy to fluctuate greatly, the heat exchange effect is poor, and the gas distribution pipe and the gas distribution plate with a small aperture are easy to block holes and are difficult to clean. The existing gas distribution mode has short retention time of high-temperature flue gas in liquid, poor heat exchange effect and high energy consumption.
In addition, in the evaporation process of the percolate, crystals are deposited at the bottom of the evaporator, hardening is easily caused, a drain outlet at the bottom is blocked, long-period operation of the evaporator is influenced, and certain potential safety hazards also exist.
Consequently this patent proposes a direct contact evaporator for landfill leachate membrane concentrate, not only can solve the gas distribution problem of high temperature flue gas, increases the dwell time of flue gas in the filtration liquid, and reinforcing heat transfer effect reduces the energy consumption, can effectively prevent simultaneously that the evaporator bottom solid matter deposit from hardening and a series of problems that bring.
Publication No. CN215136903U is a submerged combustion evaporator, which includes: an evaporator housing, the evaporator housing containing a liquid therein; a combustion chamber, the lower end of which is submerged in the liquid; and the flue gas distributor, the flue gas distributor with the lower extreme of combustion chamber links to each other, the flue gas distributor includes gas distribution chamber and a plurality of flue gas pipeline, wherein gas distribution chamber lateral wall open have a plurality of round holes with flue gas pipeline is connected, flue gas pipeline end is kept away from the combustion chamber and is stretched to liquid depths, flue gas pipeline end export is the cyclic annular equipartition of multilayer.
CN215136903U and the utility model patent have the following differences: (1) The gas distribution mode is different, the high-temperature flue gas produced in the combustion chamber of the patent enters into liquid through the gas distribution chamber connected with the combustion chamber, the bottom of the gas distribution chamber is connected with a plurality of flue gas pipelines, the tail end of the flue gas pipeline is far away from the combustion chamber and extends to the deep part of the liquid, the tail end of the flue gas pipeline is annularly and uniformly distributed in a multilayer mode, the tail end of the flue gas pipeline is provided with a zigzag bubble breaking structure, large bubbles are broken into small bubbles, and the utility model discloses a gas distribution layer is arranged on the gas distribution pipe, cobblestones are arranged in the gas distribution pipe, when the flue gas is sprayed out from the bottom pipeline, the cobblestones pass through the gas distribution layer in a large bubble mode, the small bubbles which are randomly accumulated are broken into small bubbles, and because the gaps of the cobblestones are complicated, the broken small bubbles are relatively uniformly distributed in the liquid, the heat exchange with the liquid is longer in the stay time, the heat exchange effect is better, the energy consumption is smaller, and meanwhile, the cobblestones cannot be corroded by the liquid; (2) Newly-increased gas distribution pipe prevents hardening, and the smoke conduit that the pipe diameter is littleer is arranged in this patent bottom the gas distribution chamber, thin smoke conduit stretches to the evaporimeter bottom, and the sedimentary crystal of evaporimeter bottom is washed away to high-speed flue gas in the pipeline, causes the disturbance, prevents to harden. Thus, the patent publication No. CN215136903U is essentially different from this patent.
SUMMERY OF THE UTILITY MODEL
The utility model provides a direct contact evaporator for landfill leachate membrane concentrate for solve in the past the evaporator distribute gas in the inhomogeneous heat transfer effect that leads to poor, the equipment vibration big, the evaporator in the crystal easily harden and block up gas distribution hole scheduling problem, thereby promote evaporation efficiency, reduce the energy consumption.
In order to achieve the above object, the present invention provides a direct contact evaporator for landfill leachate membrane concentrate, which comprises the following specific technical solutions:
the utility model provides a direct contact formula evaporimeter for landfill leachate membrane concentrate, includes the evaporimeter body, evaporimeter body middle part embedded type installs the combustion chamber, the exhanst gas outlet has been seted up to evaporimeter body top one side, the inside position that is located landfill leachate membrane concentrate's liquid level below of evaporimeter body transversely is provided with the gas distribution layer, the combustion chamber bottom is connected with first gas distribution nest of tubes and second gas distribution nest of tubes.
Further, the first air distribution pipe group and the second air distribution pipe group respectively comprise at least one air distribution pipe.
Further, the diameter of the air distribution pipe in the first air distribution pipe group is larger than that of the air distribution pipe in the second air distribution pipe group, and the air distribution pipes in the second air distribution pipe group extend to the bottom of the evaporator body.
Further, the tail ends of the air distribution pipes in the first air distribution pipe group are provided with vertical downward openings, and the tail ends of the air distribution pipes in the second air distribution pipe group are provided with openings parallel to the conical arc-shaped side wall at the bottom of the evaporator body.
Further, the air distribution pipes in the first air distribution pipe group and the second air distribution pipe group are arranged at equal intervals.
Furthermore, cobblestones are filled in the gas distribution layer.
Further, a water inlet is formed in the side wall of the evaporator body.
Compared with the prior art, the beneficial effects of the utility model are that:
from prior art, the direct contact formula evaporation equipment of handling landfill leachate on the market at present has adopted the gas distribution mode of different forms, be used for reinforcing heat transfer effect, there is porous distribution plate formula, porous diameter distribution pipe or other broken bubbles of result etc, but perforated plate or distribution pipe are little because of the gas pocket diameter, and trompil quantity is limited etc, the easy crystallization that is blockked up in the evaporation process of gas pocket, the bubble also can distribute inhomogeneously, the big velocity of flow that the little aperture brought simultaneously leads to the circumstances such as equipment vibration and noise increase, and other broken bubble effects of mechanical structure form are unstable, and the bubble distributes inhomogeneously, lead to the circumstances such as the liquid level fluctuation is great in the evaporimeter.
What is different from the prior art, the utility model discloses a novel gas distribution structure sets up the gas distribution layer of certain thickness on exhanst gas outlet upper portion, and inside packing cobblestone through the tiny clearance of cobblestone, becomes tiny bubble with the big bubble breakage of flue gas formation, and the irregular clearance of cobblestone can let the random distribution of small bubble simultaneously, has both increased gaseous dwell time in liquid, also makes the distribution of small bubble tend to evenly, reduces because of the inhomogeneous heat transfer effect who causes of bubble distribution is poor and the condition of equipment vibration appears.
In addition, percolate film concentrate has the crystallization in evaporation process to appear, and the risk that hardens can appear in the crystallization of deposit bottom the evaporimeter, all can cause the puzzlement to the operation of equipment and crystal follow-up processing, the utility model discloses an add necking down flue gas pipeline, constantly stir the evaporimeter bottom through high velocity of flow gas, make the crystallization be difficult for hardening, so this patent has higher use value.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a partially enlarged view of the first air distribution pipe and the second air distribution pipe in fig. 1 according to the present invention;
the symbols in the figure illustrate: 1. a combustion chamber; 2. a flue gas outlet; 3. a water inlet; 4. a gas distribution layer; 5. a first gas distribution pipe group; 6. and a second gas distribution pipe group.
Detailed Description
In order to better understand the purpose, structure and function of the present invention, the following description will be made in detail with reference to the accompanying drawings and preferred embodiments for a direct contact evaporator for landfill leachate membrane concentrate of the present invention.
In the description of the present invention, it should be understood that the terms "left", "right", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, "first", "second", and the like do not indicate the degree of importance of the component parts, and thus, should not be construed as limiting the present invention.
Example 1:
referring to fig. 1-2, the present invention provides a technical solution: a direct contact evaporator for landfill leachate membrane concentrated solution comprises an evaporator body, wherein the evaporator refers to a direct contact evaporator which is a heat exchange device for enabling high-temperature flue gas to be in direct contact with leachate concentrated water to enable concentrated solution to absorb heat for evaporation; the garbage leachate membrane concentrated solution is a concentrated solution obtained by separating a solvent, a solute and particles from the garbage leachate through a diaphragm; the bottom of the combustion chamber 1 is connected with a first gas distribution tube group 5 and a second gas distribution tube group 6.
Further, the first gas distribution pipe group 5 and the second gas distribution pipe group 6 each include at least one gas distribution pipe.
Further, the diameter of the air distribution pipe in the first air distribution pipe group 5 is larger than that of the air distribution pipe in the second air distribution pipe group 6, the air distribution pipes in the second air distribution pipe group 6 extend to the bottom of the evaporator body, and the air distribution pipes in the second air distribution pipe group 6 directly and continuously scour the easy deposition area of the evaporated crystals through high-temperature flue gas, so that the crystals can be effectively prevented from being hardened.
Further, the tail ends of the air distribution pipes in the first air distribution pipe group 5 are provided with vertical downward openings, and the tail ends of the air distribution pipes in the second air distribution pipe group 6 are provided with openings parallel to the conical arc-shaped side wall at the bottom of the evaporator body.
Further, the air distribution pipes in the first air distribution pipe group 5 and the second air distribution pipe group 6 are arranged in an equidistant mode.
Furthermore, cobblestones are filled in the gas distribution layer 4, so that bubbles can be broken, uniform gas distribution is realized, and the heat exchange mode is enhanced; the cobblestone gas layer can break large bubbles into small bubbles, so that the breaking effect is better; compared with other gas distribution modes such as gas distribution plates or gas distribution pipes with small gas holes, the mode adopted by the utility model is not easy to be blocked by crystallization, can effectively solve the problem of gas distribution uniformity, improves the heat exchange effect, saves energy and improves the equipment vibration caused by uneven gas distribution; of course, the cobblestones in the gas distribution layer can also be replaced by other fillers which do not react with or corrode the landfill leachate.
Further, a water inlet 3 is formed in the side wall of the evaporator body, and in the evaporation process, along with the reduction of liquid in the evaporator, percolate film concentrated solution is supplemented through the water inlet 3.
The working principle is as follows:
the utility model discloses in adopt the mode of high temperature flue gas with by the direct contact of evaporation liquid, combustible gas and air fast combustion in combustion chamber 1 to produce the high temperature flue gas and pass through first gas distribution nest of tubes 5 and second gas distribution nest of tubes 6 and get into in the evaporimeter filtration liquid film concentrate, gas that rises in the liquid is through gas distribution layer 4 after, because the cobblestone clearance in the gas distribution layer 4 is little and pile up at random, it breaks into the microfoam with the flue gas, and evenly distributed in filtration liquid film concentrate, the microfoam realizes direct heat transfer with filtration liquid film concentrate, and does not have fixed heat transfer surface, the heat transfer is fast, and the heat transfer is effectual, and the random pile up of cobblestone is also increased the dwell time of gas in the liquid, and the heat transfer is more abundant, thereby reduces the energy consumption; the tiny foam can not cause the large fluctuation of the liquid level of the percolate film concentrated solution, can not cause the vibration of equipment, and is convenient for monitoring the liquid level of the evaporator; when part of high-temperature flue gas passes through the second gas distribution pipe group 6, the flow speed of the passing flue gas is increased due to the small pipe diameter of the second gas distribution pipe group 6, the second gas distribution pipe group 6 extends to the bottom of the evaporator, and the flue gas ejected at high speed scours evaporated crystals deposited at the bottom, so that the crystals are in a discrete state and cannot be hardened. The opening of the first air distribution pipe group 5 is downward, the opening of the second air distribution pipe group 6 is parallel to the shell below the device, the arrangement mode of the air distribution pipes is shown in figure 2, and the arrangement mode of the air distribution pipes is uniform and equidistant.
In the evaporation process, along with the reduction of liquid in the evaporator, the percolate film concentrated solution is supplemented through the water inlet 3, and the flue gas after heat exchange leaves the evaporator through the flue gas outlet 2 and enters a subsequent treatment system.
The utility model discloses a neotype gas distribution structure and mode carry out direct contact evaporation to landfill leachate membrane concentrate, and the cobblestone cloth gas layer of adoption not only can be more effectual carry out the breakage to the bubble, can also optimize the gas distribution homogeneity of small bubble, reinforcing heat transfer effect, the while can also effectual solution because of the hardened problem of intractable of evaporation in-process crystallisate deposit, improve the performance and the increase of service life of equipment, so this method has very high use value.
It is to be understood that the present invention has been described with reference to certain embodiments and that various changes or equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention as defined by the appended claims. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.
Claims (7)
1. A direct contact evaporator for landfill leachate membrane concentrate, its characterized in that: the garbage leachate membrane concentrated solution evaporator is characterized by comprising an evaporator body, wherein a combustion chamber (1) is installed in the middle of the evaporator body in an embedded mode, a smoke outlet (2) is formed in one side of the top of the evaporator body, a gas distribution layer (4) is transversely arranged at a position, below the liquid level, of garbage leachate membrane concentrated solution, inside the evaporator body, and a first gas distribution pipe group (5) and a second gas distribution pipe group (6) are connected to the bottom of the combustion chamber (1).
2. Direct contact evaporator for landfill leachate membrane concentration according to claim 1, characterized in that the first gas distribution pipe bank (5) and the second gas distribution pipe bank (6) each comprise at least one gas distribution pipe.
3. Direct contact evaporator for landfill leachate membrane concentration according to claim 2, characterized in that the diameter of the gas distribution pipes in the first gas distribution pipe bank (5) is larger than the diameter of the gas distribution pipes in the second gas distribution pipe bank (6), and the gas distribution pipes in the second gas distribution pipe bank (6) each extend to the bottom of the evaporator body.
4. The direct contact evaporator for landfill leachate membrane concentrate of claim 2, wherein the gas distribution pipes of the first gas distribution pipe group (5) each have an opening facing vertically downwards at their end and the gas distribution pipes of the second gas distribution pipe group (6) each have an opening parallel to the tapered arc-shaped side wall at the bottom of the evaporator body.
5. Direct contact evaporator for landfill leachate membrane concentration according to claim 2, characterized in that the gas distribution pipes in the first (5) and second (6) pipe distribution pipe groups are arranged in an equidistant manner.
6. Direct contact evaporator for landfill leachate membrane concentration according to claim 1, characterized in that the gas distribution layer (4) is filled with cobblestones.
7. Direct contact evaporator for landfill leachate membrane concentration according to claim 1, characterized in that the side wall of the evaporator body is provided with a water inlet (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221646469.9U CN218145931U (en) | 2022-06-28 | 2022-06-28 | Direct contact type evaporator for landfill leachate membrane concentrated solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221646469.9U CN218145931U (en) | 2022-06-28 | 2022-06-28 | Direct contact type evaporator for landfill leachate membrane concentrated solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218145931U true CN218145931U (en) | 2022-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221646469.9U Active CN218145931U (en) | 2022-06-28 | 2022-06-28 | Direct contact type evaporator for landfill leachate membrane concentrated solution |
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| Country | Link |
|---|---|
| CN (1) | CN218145931U (en) |
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- 2022-06-28 CN CN202221646469.9U patent/CN218145931U/en active Active
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