CN212559834U - Horizontal cross heat exchange's hot air drying waste liquid system that circulates - Google Patents
Horizontal cross heat exchange's hot air drying waste liquid system that circulates Download PDFInfo
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- CN212559834U CN212559834U CN202021304560.3U CN202021304560U CN212559834U CN 212559834 U CN212559834 U CN 212559834U CN 202021304560 U CN202021304560 U CN 202021304560U CN 212559834 U CN212559834 U CN 212559834U
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Abstract
The utility model relates to a circulation hot air drying waste liquid system of transverse cross heat transfer, wherein the waste liquid shower head setting among the waste liquid shower system is in hot air drying evaporating chamber top, and the liquid collecting tank setting is in hot air drying evaporating chamber below, and the waste liquid filter sets up in the liquid collecting tank, and waste liquid filter and waste liquid shower head are connected to the water pump. One end of a fan in the hot air system is connected with one side of the hot air drying evaporation chamber, and the other end of the fan is connected with the other side of the hot air cooling dehumidifier, the hot air heater and the hot air drying evaporation chamber. Hot air enters the hot air drying evaporation chamber through the hot air distribution hole plate, transversely enters from one side, exits from the other side, and transversely and crossly flows and exchanges heat with downward flowing water mist generated by the waste liquid spray header. The utility model discloses a mode of indirect heating waste liquid to hot-blast as the medium, take away the moisture of evaporation, through the lowering temperature, the water content in the hot-blast reduces, and the comdenstion water up to standard that hot-blast condensation goes out discharges, and the environmental protection is effectual.
Description
Technical Field
The utility model belongs to the environmental protection processing system of industrial waste liquid, rubbish leachate concentrate relates to and is used for the higher, the waste liquid evaporation mummification that arouses contact wall face to corrode the scale deposit easily of impurity such as salt, like rubbish leachate concentrate evaporation mummification's processing system, in particular to circulation hot air mummification waste liquid system of horizontal cross heat transfer.
Background
The treatment of industrial waste liquids such as landfill leachate concentrate is an industry pain point. The liquid contains salt, has high impurity quality and substances easy to corrode and scale, and adopts the traditional dividing wall type heat exchanger, so that a heating coil is easy to scale, the operation is extremely unstable, and the liquid needs to be overhauled frequently. Because the waste liquid contains high content of impurities such as salt and the like, corrosion and scaling of a contact wall surface are easily caused, and therefore, the waste liquid needs to be evaporated and dried to further treat the waste liquid.
In view of this, science and technology in this field are dedicated to develop an environmental protection waste liquid treatment system for evaporating and drying waste liquid.
Disclosure of Invention
The utility model aims to provide a horizontal cross heat transfer's circulation hot air mummification waste liquid system, adopt the mode of indirect heating waste liquid, regard hot-blast as the medium, heat dry hot-blast to 70 ℃ -80 ℃, with waste liquid spraying lateral contact, the moisture of evaporation is taken away to hot-blast, get into the cooling dehumidifier, through lowering the temperature, the water content in the hot-blast, the comdenstion water that the hot-blast condensation goes out is up to standard and discharges; the cooled hot air is heated to 70-80 ℃ by a hot air heater, and the hot air flows circularly and transversely and crossly exchanges heat, thereby solving the problems in the prior art.
The technical solution of the utility model is as follows:
a circulating hot air drying waste liquid system with transverse cross heat exchange is disclosed, wherein the waste liquid system consists of a hot air drying evaporation chamber, a waste liquid spraying system, a hot air system and a connecting pipeline;
the hot air drying evaporation chamber is arranged in the center of a frame of the waste liquid system;
the waste liquid spraying system is provided with a waste liquid spraying head, a waste liquid filter, a water pump and a liquid collecting tank; the waste liquid spray header is arranged at the top of the hot air drying evaporation chamber, the liquid collecting tank is arranged below the hot air drying evaporation chamber, the liquid collecting tank is provided with a waste liquid inlet and an evaporated waste liquid outlet, the waste liquid filter is arranged in the liquid collecting tank, and the water pump is respectively connected with the waste liquid filter and the waste liquid spray header through connecting pipelines;
the hot air system is provided with a fan, a hot air distribution pore plate, a hot air demisting pore plate, a hot air cooling dehumidifier and a hot air heater; one end of the fan is connected with one side of the hot air drying evaporation chamber through a connecting pipeline, the other end of the fan is connected with a hot air cooling dehumidifier, the hot air cooling dehumidifier is connected with a hot air heater, and the hot air heater is connected with the other side of the hot air drying evaporation chamber; the hot air distribution pore plate is arranged on the inner side wall of the hot air drying evaporation chamber adjacent to the air inlet of the hot air heater; the hot air demisting mesh plate is arranged on the inner wall of one side of the hot air drying evaporation chamber connected with the fan;
when a fan is started, hot air with the temperature of 70-80 ℃ enters a hot air drying evaporation chamber through a hot air distribution pore plate, the hot air transversely enters from one side and exits from the other side to transversely and crossly flow and exchange heat with downward flowing water mist generated by a waste liquid spray header, the temperature of the hot air is reduced to 40-60 ℃, the wet hot air passes through a hot air demisting mesh plate, enters a hot air cooling dehumidifier and is heated to 70-80 ℃ through a hot air heater, and therefore the hot air circularly flows and transversely and crossly exchanges heat.
The hot air cooling dehumidifier adopts the cold end of the heat pump as a cold source, and the hot air heater adopts the hot end of the heat pump as a heat source.
The hot air cooling dehumidifier adopts cooling water to cool.
The hot air heater adopts hot water with the temperature higher than 75 ℃ as a heat source.
The utility model discloses a horizontal cross heat transfer's circulation hot air mummification waste liquid system adopts the mode of indirect heating waste liquid, regards hot-blast as the medium, heats dry hot-blast to 70 ℃ -80 ℃, transversely contacts with the waste liquid spraying, and the moisture of evaporation is taken away to hot-blast, gets into the cooling dehumidifier, through reducing the temperature, the water content in the hot-blast reduces, and the comdenstion water that the hot-blast condensation goes out is up to standard and discharges; the cooled hot air is heated to 70-80 ℃ by a hot air heater.
The utility model discloses a hot-blast and spraying horizontal cross heat transfer mode, the hot-blast air distribution plate of mainly considering arranges in one side of hot air drying evaporating chamber, is favorable to controlling on the droplet does not spill hot-blast air distribution plate, avoids this position scale deposit and corruption.
The utility model discloses a waste liquid system makes waste liquid spraying and dry hot-blast heat transfer that carries on, and dry hot-blast humidity increases, through cooling and dehumidification, and the condensation falls hot-blast moisture, discharge to reach standard. The condensed hot air is heated to 70-80 ℃ by a hot air heater and then enters a hot air drying evaporation chamber again to exchange heat with the waste liquid spray. Because evaporation is carried out by means of moisture content change of hot air, the hot air circulates in the system, harmful gas generated in the evaporation process is not discharged to the outside, and the environment-friendly effect is good.
Drawings
Fig. 1 is a schematic structural diagram of a transverse cross heat exchange circulating hot air drying waste liquid system of the present invention.
Reference numerals:
1 is the fan, 2 is hot-blast cooling dehumidifier, 3 is hot air heater, 4 is hot-blast cloth wind orifice plate, 5 is hot-air drying evaporation chamber, 6 is the waste liquid export after the evaporation, 7 is the collecting tank, 8 is the waste liquid filter, 9 is the waste liquid entry, 10 is hot-blast defogging mesh plate, 11 is the water pump, 12 is the waste liquid shower head.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Referring to fig. 1, the utility model provides a horizontal cross heat transfer's circulation hot air mummification waste liquid system, the waste liquid system comprises hot air mummification evaporating chamber 5, waste liquid spraying system, hot air system and connecting tube. The hot air drying evaporation chamber 5 is arranged in the center of the frame of the waste liquid system.
The waste liquid spraying system is provided with a waste liquid spraying head 12, a waste liquid filter 8, a water pump 11 and a liquid collecting tank 7. Wherein the waste liquid spray header 12 is arranged at the top of the hot air drying evaporation chamber 5. The liquid collecting tank 7 is arranged below the hot air drying evaporation chamber 5, and the liquid collecting tank 7 is provided with a waste liquid inlet 9 and an evaporated waste liquid outlet 6. A waste liquid filter 8 is disposed in the liquid collecting tank 7. The water pump 11 is connected with the waste liquid filter 8 and the waste liquid spray header 12 through connecting pipelines respectively. The fog drops sprayed by the waste liquid spraying system do not touch the wall surface of the hot air drying evaporation chamber 5 in the falling process.
The hot air system is provided with a fan 1, a hot air distribution pore plate 4, a hot air demisting pore plate 10, a hot air cooling dehumidifier 2 and a hot air heater 3. One end of a fan 1 is connected with one side of a hot air drying evaporation chamber 5 through a connecting pipeline, the other end of the fan 1 is connected with a hot air cooling dehumidifier 2, the hot air cooling dehumidifier 2 is connected with a hot air heater 3, and the hot air heater 3 is connected with the other side of the hot air drying evaporation chamber 5. The hot air distribution hole plate 4 is arranged on the inner side wall of the hot air drying evaporation chamber 5 adjacent to the air inlet of the hot air heater 3. The hot air demisting mesh plate 10 is arranged on the inner wall of one side of the hot air drying evaporation chamber 5 connected with the fan 1.
When a fan 1 is started, hot air with the temperature of 70-80 ℃ enters a hot air drying evaporation chamber 5 through a hot air distribution pore plate 4, the hot air transversely enters from one side and exits from the other side to transversely and crossly flow and exchange heat with downward flowing water mist generated by a waste liquid spray header 12, the temperature of the hot air is reduced to 40-60 ℃, the hot air containing moisture passes through a hot air demisting mesh plate 10, enters a hot air cooling dehumidifier 2, and is heated to 70-80 ℃ through a hot air heater 3, so that the hot air circularly flows and transversely and crossly exchanges heat.
The hot air cooling dehumidifier 2 can adopt the cold end of the heat pump as a cold source, and the hot air heater 3 can adopt the hot end of the heat pump as a heat source. The hot air temperature-reducing dehumidifier 2 can also adopt cooling water for temperature reduction. The hot air heater 3 may also use hot water of more than 75 deg.c as a heat source. Or the two modes are used in series.
After hot-blast process hot-blast cloth wind orifice plate 4, the wind speed control in hot-blast mummification evaporating chamber 5 is below 1m/s, hot-blast horizontal even flow, reduce the hot-blast waste liquid granule that carries, because there is impurity such as salinity to exist in the waste liquid granule, the waste liquid granule of carrying will lead to the pipeline scale deposit to corrode, influence the quality of water of condensation play water behind the hot-blast cooling simultaneously, so to wind speed control in, set up hot-blast defogging mesh plate 10 in hot-blast export, the most water droplet granule of throttle.
As shown in fig. 1, the system for drying waste liquid by circulating hot air with transverse cross heat exchange of the present invention employs the waste liquid circulating spray flow and the hot air circulating flow described below.
The waste liquid circulating spraying process comprises the following steps: the waste liquid passes through waste liquid entry 9, gets into collecting tank 7, and the waste liquid passes through waste liquid filter 8, is carried to waste liquid shower head 12 by water pump 11, and after spraying and horizontal hot-blast heat transfer, the droplet falls into collecting tank 7, and through the accumulation of certain period, the waste liquid is constantly concentrated, reaches the concentrated proportion of settlement after, the waste liquid is from the outflow of evaporation back waste liquid export 6.
The hot air circulation flow is as follows: the hot air with the temperature of 70-80 ℃ enters a hot air drying evaporation chamber 5, the temperature of the hot air is reduced to 40-60 ℃ after heat exchange with spray droplets, the hot air passes through a hot air demisting mesh plate 10 to remove moisture particles carried by the hot air, the hot air enters a hot air cooling dehumidifier 2 under the continuous work of a fan 1, water vapor contained in the hot air is removed in a cooling mode, and the temperature of the hot air is raised to 70-80 ℃ through a hot air heater 3.
The hot air entering and exiting the hot air cooling dehumidifier 2 carries out regenerative heat exchange, so that the energy consumption can be reduced. The dry hot air can also flow to the lower part through the top of the hot air drying evaporation chamber 5 and flow out from the outlet on the side surface of the lower part, and exchanges heat with the fog drops sprayed by the waste liquid spray header 12 in the same way. Considering that the wall surface of the hot air drying evaporation chamber 5 is easily corroded by spraying, the spray droplets near the wall surface are allowed to fall vertically, and the droplets are not scattered on the wall surface.
To sum up, the utility model discloses a horizontal cross heat exchange's circulation hot air mummification waste liquid system adopts the mode of indirect heating waste liquid, takes hot-blast as the medium, heats dry hot-blast to 70 ℃ -80 ℃, transversely contacts with the waste liquid spraying, and the moisture of evaporation is taken away to hot-blast, gets into the cooling dehumidifier, through reducing the temperature, the water content in the hot-blast reduces, and the comdenstion water that the hot-blast condensation goes out discharges up to standard; the cooled hot air is heated to 70-80 ℃ by a hot air heater, the hot air flows circularly and transversely and crossly exchanges heat, the hot air circulates in the system, harmful gas generated in the evaporation process is not discharged outwards, and the environment-friendly effect is good.
Of course, those skilled in the art should recognize that the above-described embodiments are merely illustrative of the present invention and are not intended to be limiting, and that changes, modifications, etc. to the above-described embodiments are intended to fall within the scope of the appended claims, provided they fall within the true spirit of the present invention.
Claims (4)
1. The utility model provides a horizontal cross heat transfer's hot air drying waste liquid system that circulates which characterized in that: the waste liquid system consists of a hot air drying evaporation chamber (5), a waste liquid spraying system, a hot air system and a connecting pipeline;
the hot air drying evaporation chamber (5) is arranged in the center of a frame of the waste liquid system;
the waste liquid spraying system is provided with a waste liquid spraying head (12), a waste liquid filter (8), a water pump (11) and a liquid collecting tank (7); the waste liquid spray header (12) is arranged at the top of the hot air drying evaporation chamber (5), the liquid collecting tank (7) is arranged below the hot air drying evaporation chamber (5), the liquid collecting tank (7) is provided with a waste liquid inlet (9) and an evaporated waste liquid outlet (6), the waste liquid filter (8) is arranged in the liquid collecting tank (7), and the water pump (11) is respectively connected with the waste liquid filter (8) and the waste liquid spray header (12) through connecting pipelines;
the hot air system is provided with a fan (1), a hot air distribution pore plate (4), a hot air demisting pore plate (10), a hot air cooling dehumidifier (2) and a hot air heater (3); one end of the fan (1) is connected with one side of the hot air drying evaporation chamber (5) through a connecting pipeline, the other end of the fan (1) is connected with the hot air cooling dehumidifier (2), the hot air cooling dehumidifier (2) is connected with the hot air heater (3), and the hot air heater (3) is connected with the other side of the hot air drying evaporation chamber (5); the hot air distribution pore plate (4) is arranged on the inner side wall of the hot air drying evaporation chamber (5) adjacent to the air inlet of the hot air heater (3); the hot air demisting mesh plate (10) is arranged on the inner wall of one side of the hot air drying evaporation chamber (5) connected with the fan (1).
2. The system of claim 1, wherein the system comprises: the hot air cooling dehumidifier (2) adopts the cold end of a heat pump as a cold source, and the hot air heater (3) adopts the hot end of the heat pump as a heat source.
3. The system of claim 1, wherein the system comprises: the hot air cooling dehumidifier (2) adopts cooling water to cool.
4. The system of claim 1, wherein the system comprises: the hot air heater (3) adopts hot water with the temperature higher than 75 ℃ as a heat source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021304560.3U CN212559834U (en) | 2020-07-08 | 2020-07-08 | Horizontal cross heat exchange's hot air drying waste liquid system that circulates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021304560.3U CN212559834U (en) | 2020-07-08 | 2020-07-08 | Horizontal cross heat exchange's hot air drying waste liquid system that circulates |
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| Publication Number | Publication Date |
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| CN212559834U true CN212559834U (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021304560.3U Active CN212559834U (en) | 2020-07-08 | 2020-07-08 | Horizontal cross heat exchange's hot air drying waste liquid system that circulates |
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| CN (1) | CN212559834U (en) |
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- 2020-07-08 CN CN202021304560.3U patent/CN212559834U/en active Active
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