CN223561330U - Stacked multi-effect evaporation concentration device for wastewater - Google Patents
Stacked multi-effect evaporation concentration device for wastewaterInfo
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- CN223561330U CN223561330U CN202422772521.0U CN202422772521U CN223561330U CN 223561330 U CN223561330 U CN 223561330U CN 202422772521 U CN202422772521 U CN 202422772521U CN 223561330 U CN223561330 U CN 223561330U
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Abstract
The utility model discloses a stacked multi-effect evaporation concentration device for wastewater, which comprises a main tower body of a concentration tower, a wastewater circulating pipeline, a plurality of water distribution plates, a plurality of groups of demisting devices, a wastewater circulating pump and a plurality of heat exchangers, wherein the wastewater circulating pipeline is arranged on the outer side of the main tower body of the concentration tower, one end of the wastewater circulating pipeline is communicated with a liquid holding section, the other end of the wastewater circulating pipeline is communicated with the top of the main tower body of the concentration tower, the plurality of water distribution plates are arranged in the main tower body of the concentration tower, the plurality of groups of demisting devices are arranged on the outer side of the main tower body of the concentration tower, and openings of the plurality of groups of demisting devices are respectively arranged below each water distribution plate, and the wastewater circulating pump and the plurality of heat exchangers are arranged on the wastewater circulating pipeline, and are respectively connected with the plurality of the heat exchangers through pipelines. The utility model has the advantages of reduced energy consumption, simple system, small occupied area, no pretreatment of desulfurization waste water, no scale formation of waste water and high concentration ratio of waste water.
Description
Technical Field
The utility model relates to wastewater treatment equipment, in particular to desulfurization wastewater concentration treatment equipment, and belongs to the field of environmental protection.
Background
The limestone-gypsum wet desulfurization process is the most widely and most mature desulfurization technology applied in the world at present, and accounts for more than 90% of the total desulfurization technology of coal-fired thermal power plants in China, and becomes the primary choice of the desulfurization process of the current coal-fired power plants. Lime milk is adopted for limestone-gypsum wet desulfurization to circularly absorb SO 2 in flue gas, gypsum is generated in the absorption process, cl-concentration is generally adopted for controlling in order to ensure the slurry characteristics and gypsum quality, a certain amount of desulfurization wastewater is discharged periodically, and fresh absorption liquid is supplemented. Desulfurization waste water of coal-fired power plants has become a key factor for restricting zero emission of waste water of the whole thermal power plants due to high suspended matter concentration, strong corrosiveness, easy scaling, high heavy metal content and high treatment difficulty.
At present, desulfurization wastewater treatment mainly comprises three stages of pretreatment, concentration and decrement and tail end zero emission treatment, wherein the concentration and decrement stages mainly comprise membrane concentration and thermal concentration. The membrane concentration can recycle the crystalline salt and the wastewater, but has the defects of complex system, high investment and operation cost. The thermal method concentration mainly comprises a low-temperature flue gas concentration and evaporation process and a multi-effect evaporation and concentration process, wherein the low-temperature flue gas concentration and evaporation process has the problems of large inlet and outlet flues, large occupied area, difficult arrangement, low pH value of concentrated solution and the like, and the multi-effect evaporation and concentration process has the problems of complex system, large occupied area and high investment cost.
Disclosure of utility model
Aiming at the problems in the background art, the utility model aims to provide the desulfurization wastewater concentration device which has low energy consumption, simple system, small occupied area, no pretreatment of desulfurization wastewater, no scaling of wastewater, high wastewater concentration ratio and no dosing treatment of wastewater concentrate, so as to solve the problems in the background art.
The technical aim of the utility model is realized by the following technical scheme:
The utility model provides a fold vertical waste water multiple effect evaporation enrichment facility, includes the main tower body of concentration tower, the below of the main tower body of concentration tower be the changeover portion the below of changeover portion is for holding the liquid section, the waste water concentrate outlet pipe way is installed to the bottom of holding the liquid section, waste water inlet pipe way is installed to the lateral wall of holding the liquid section, still includes:
The wastewater circulating pipeline is arranged at the outer side of the main tower body of the concentration tower, one end of the wastewater circulating pipeline is communicated with the liquid holding section, and the other end of the wastewater circulating pipeline is communicated with the tower top of the main tower body of the concentration tower;
At least one water distribution plate arranged in the main body of the concentration tower;
The plurality of groups of demisting devices are arranged on the outer side of the main tower body of the concentration tower, and openings of the demisting devices are respectively positioned below each water distribution plate;
a wastewater circulating pump and a plurality of heat exchangers installed on the wastewater circulating pipe;
the inlet is communicated with the outlet of the wastewater circulating pump, and the outlet is communicated with the liquid holding section;
and the condensing device is respectively connected with the heat exchangers through pipelines.
Further, the condensing device comprises condensing tanks which are respectively connected with a plurality of heat exchangers through pipelines;
a gas-liquid separator connected with the top of the condensing tank through a pipeline;
And a vacuum pump connected with the gas-liquid separator through a pipeline.
Further, the demisting device comprises a vertical pipeline, a demister body arranged in the vertical pipeline, and an inclined pipeline, wherein one end of the inclined pipeline is connected with the vertical pipeline, the other end of the inclined pipeline is connected with the main tower body of the concentration tower, the inclined pipeline is inclined to the main tower body of the concentration tower, an included angle alpha between the inclined pipeline and the horizontal direction is more than or equal to 10 degrees, the steam flow rate is less than or equal to 30m/s, and the height from the lower edge of the inclined pipeline to the highest liquid level of wastewater is more than or equal to 0.5m.
Furthermore, the water distribution plate is a flat plate with one or more water holes uniformly distributed in the middle, and the minimum aperture of the water holes is more than or equal to 30mm.
Further, the heat exchanger at least comprises a zeroth heat exchanger and a supplementary heat exchanger, wherein an initial heat source of the zeroth heat exchanger is a driving heat source, a supplementary heat source of the supplementary heat exchanger is outlet flash steam of the demisting device, and a cold side working medium of the heat exchanger is desulfurization wastewater or cooling water.
Further, the number of the water distribution plates is at least two, and the number of the demisting devices is the same as that of the water distribution plates.
Furthermore, the heat exchanger is a shell-and-tube heat exchanger or a wide-channel plate heat exchanger, and 2205 stainless steel, 2507 stainless steel or titanium is selected as a material.
Further, the liquid holding section is internally filled with desulfurization wastewater, the upper part of the liquid holding section is cylindrical, the ratio of the diameter of the upper part of the liquid holding section to the diameter of the main tower body of the concentration tower is 1:1-2:1, the lower part of the liquid holding section is conical, and the cone angle of the lower part of the liquid holding section is less than or equal to 90 DEG
Further, the tail end of the waste water disturbing pipe penetrates into the cone section of the liquid holding section, and the radial included angle between the waste water disturbing pipe and the liquid holding section is more than or equal to 45 degrees.
Further, the driving heat source is steam, hot water or flue gas, and the temperature of the driving heat source is 60-150 ℃.
Furthermore, the medium conveyed by the wastewater inlet pipeline is desulfurization wastewater which is not subjected to precipitation, filtration and dosing pretreatment or municipal wastewater, high-salt wastewater and other wastewater.
The working principle of the utility model is as follows:
The desulfurization waste water which is not pretreated enters the liquid holding section through a waste water inlet pipeline, is pumped into a heat exchanger in sequence through a waste water circulating pump to be heated, enters a concentration tower to be flashed, the pressure is reduced, the desulfurization waste water is vaporized and flashed to steam, the steam enters the heat exchanger to heat circulating desulfurization waste water after demisting, the desulfurization waste water after temperature reduction continues to be subjected to multi-stage flash evaporation, the steam with the temperature reduced in sequence enters the corresponding heat exchanger to heat the desulfurization waste water respectively, the temperature of the desulfurization waste water after flash evaporation is reduced, the moisture is reduced, and the desulfurization waste water is concentrated. Condensing water of the heat exchanger enters a condensing tank for storage, and non-condensing gas is pumped out through a vacuum pump, so that the vacuum degree of the flash tower is ensured.
In summary, the utility model has the following advantages:
(1) The utility model has low energy consumption, simple system, small occupied area, no pretreatment of desulfurization waste water, no scale formation of waste water, high concentration ratio of waste water and no chemical treatment of waste water concentrate.
(2) The raw water of the desulfurization wastewater contains a large amount of gypsum crystals, wherein scaling substances have the same structure as the seed crystal. Since the seed crystal surface exhibits much greater affinity for scale-forming substances than the pipe and the inner walls of the apparatus, calcium sulfate molecules precipitated in the wastewater preferentially adhere to suspended calcium sulfate crystals. At the same time, the surface area of calcium sulfate crystals in the wastewater is much larger than the area of the inner walls of the pipes and equipment. In the concentration process, most of precipitated calcium sulfate takes the seed crystal as a core and grows continuously. Therefore, the scaling of the system can be effectively prevented by adopting a seed crystal method, and the desulfurization wastewater does not need to be subjected to softening and hardening pretreatment.
(3) In the utility model, the heating and concentrating of the waste water are mutually separated operation processes, the heating of the waste water is completed in a special heat exchanger, and the evaporating and concentrating process of the waste water is performed in a concentrating tower. In the concentration column, the wastewater evaporates at the gas-water interface, which has a significantly reduced tendency to scale compared to the manner in which that water evaporates at the metal surfaces of the heat exchanger in conventional evaporators. The separation type treatment mode and the unique evaporation environment provide a more favorable condition for reducing the scaling problem in the wastewater treatment process, and are beneficial to improving the operation stability and efficiency of the whole wastewater treatment system.
(4) In the utility model, the desulfurization waste water from the waste water flow disturbing pipe promotes the waste water in the liquid holding section to perform circular motion, and the salt sand in the raw water of the desulfurization waste water performs scouring friction on the surface of the liquid holding section, so that the phenomenon that the desulfurization waste water deposits and scales on the inner wall of the liquid holding section is avoided, and the lower end of the liquid holding section is conical. Effectively solves the problem of scaling on the inner wall possibly occurring in the desulfurization wastewater treatment process, ensures the stable operation of equipment and the reliability of the treatment effect, and provides powerful support for the smooth proceeding of the whole wastewater treatment flow.
(5) In the utility model, the temperature of the desulfurization wastewater in the heat exchanger is at a relatively low level, and the scaling tendency of the wastewater is relatively small in the low-temperature state, so that the conditions of equipment operation obstacle, treatment efficiency reduction and the like possibly caused by scaling problem can be reduced to a certain extent, and the stable operation of the whole desulfurization wastewater treatment system and the reliability of the treatment effect are ensured.
(6) In the utility model, the pH value of the desulfurization wastewater concentrated solution is slightly reduced, but the desulfurization wastewater concentrated solution is kept in a substantially unchanged state, and no additional dosing treatment is needed.
(7) The utility model effectively reduces scaling in the process of evaporating and concentrating the desulfurization wastewater, and simultaneously greatly improves the concentration ratio of the wastewater, wherein the concentration ratio is 5-10 times.
(8) The driving heat source adopted by the wastewater evaporation and concentration is from hot water, and the energy density is high, so that the corresponding pipeline size can be designed to be small, and the arrangement is flexible. In contrast, the conventional low-temperature flue gas concentration and evaporation process has a heat source derived from low-temperature flue gas, and has a smaller energy density, so that the required flue size is larger, which results in a certain limitation of equipment in arrangement. This difference in heat source and energy density directly affects the size and flexibility of the arrangement of the piping and equipment.
(9) While the conventional triple-effect evaporation requires three evaporation towers, the utility model only requires one concentration tower, which greatly reduces the occupied area. Meanwhile, the power machines involved in the technology are fewer, so that the energy consumption per ton of water is obviously lower than three-effect evaporation. The method has the advantages of being more efficient in space utilization, showing good economical efficiency in energy consumption, providing a more optimized solution for the field of wastewater treatment, being beneficial to reducing the operation cost and land resource occupation of enterprises and improving the overall economic benefit and environmental protection benefit.
(10) The utility model has wide applicability, can be effectively applied to the concentration treatment of desulfurization wastewater, and can be expanded to the treatment fields of municipal wastewater, high-salt wastewater and other types of wastewater. Is beneficial to promoting the comprehensive development and application of the sewage treatment technology, improves the recycling efficiency of water resources, reduces environmental pollution, and has important practical value and social significance.
Drawings
FIG. 1 is a schematic view of a first embodiment of the present utility model;
FIG. 2 is an enlarged view of portion A of FIG. 1 in accordance with the present utility model;
FIG. 3 is a top view of a water distribution plate according to an embodiment of the present utility model;
FIG. 4 is a cross-sectional view of FIG. 3 of the present utility model;
FIG. 5 is a schematic diagram of a second embodiment of the present utility model;
FIG. 6 is a top view of a distributor plate according to a third embodiment of the present utility model;
Fig. 7 is a cross-sectional view of fig. 6 of the present utility model.
Reference numerals:
The main tower body 1 of the concentration tower, the transition section 2, the liquid holding section 3, the waste water concentrated liquid outlet pipeline 4, the waste water inlet pipeline 5, the waste water circulating pipeline 6, the first water distribution plate 7, the second water distribution plate 8, the third water distribution plate 9, the first demisting device 10, the second demisting device 11, the third demisting device 12, the waste water circulating pump 13, the second heat exchanger 14, the first heat exchanger 15, the zeroth heat exchanger 16, the waste water disturbing pipe 17, the condensation tank 18, the gas-liquid separator 19, the vacuum pump 20, the vertical pipeline 21, the demister body 22, the inclined pipeline 23, the water hole 24, the driving heat source 25, the third heat exchanger 26, the cooling water supply pipeline 27, the cooling water return pipeline 28, the flat plate 29, the fourth water distribution plate 30, the fourth demisting device 31 and the fourth heat exchanger 32.
Detailed Description
Example 1
Referring to fig. 1 to 4, the multi-effect evaporation and concentration device for stacked wastewater according to this embodiment includes a main tower body 1 of a concentration tower, a transition section 2 is arranged below the main tower body of the concentration tower, a liquid holding section 3 is arranged below the transition section, a wastewater concentrate outlet pipeline 4 is installed at the bottom of the liquid holding section, a wastewater inlet pipeline 5 is installed at the side wall of the liquid holding section, and the multi-effect evaporation and concentration device further includes:
The wastewater circulating pipeline 6 is arranged outside the main tower body of the concentration tower, one end of the wastewater circulating pipeline is communicated with the liquid holding section, and the other end of the wastewater circulating pipeline is communicated with the tower top of the main tower body of the concentration tower;
the first water distribution plate 7, the second water distribution plate 8 and the third water distribution plate 9 are arranged in the main tower body of the concentration tower at intervals;
The first demisting device 10, the second demisting device 11 and the third demisting device 12 are arranged on the outer side of the main tower body of the concentration tower, and openings of the first demisting device, the second demisting device 11 and the third demisting device are respectively positioned at the lower parts of the first water distribution plate, the second water distribution plate and the third water distribution plate;
A wastewater circulating pump 13, a second heat exchanger 14, a first heat exchanger 15 and a zeroth heat exchanger 16 which are sequentially arranged on the wastewater circulating pipeline from the liquid holding section to the tower top direction;
A third heat exchanger 26 connected to the third demisting device, the cooling water supply pipe 27, and the cooling water return pipe 28 through pipes;
A waste water disturbing pipe 17 with an inlet communicated with the outlet of the waste water circulating pump and an outlet communicated with the liquid holding section;
a condensing tank 18 connected to the second heat exchanger and the third heat exchanger through pipes;
a gas-liquid separator 19 connected to the top of the condensing tank through a pipe;
a vacuum pump 20 connected to the gas-liquid separator by a pipe.
The first demisting device, the second demisting device and the third demisting device are composed of a vertical pipeline 21, a demister body 22 arranged in the vertical pipeline, and an inclined pipeline 23, one end of which is connected with the vertical pipeline, the other end of which is connected with the main tower body of the concentration tower, wherein the inclined pipeline inclines to the main tower body of the concentration tower, an included angle alpha between the inclined pipeline and the horizontal direction is more than or equal to 10 degrees, the steam flow rate is less than or equal to 30m/s, and the height from the lower edge of the inclined pipeline to the highest liquid level of wastewater is more than or equal to 0.5m.
The first water distribution plate, the second water distribution plate and the third water distribution plate are flat plates 29 with water holes 24 uniformly distributed in the middle, the minimum aperture of the water holes is more than or equal to 30mm, and the distance between two adjacent water distribution plates is more than or equal to 1m.
The zero-th heat exchanger hot side working medium is a driving heat source 25, the zero-th heat exchanger cold side working medium is first heat exchanger outlet desulfurization waste water, the first heat exchanger hot side working medium is first demister outlet flash evaporation steam, the first heat exchanger cold side working medium is second heat exchanger outlet desulfurization waste water, the second heat exchanger hot side working medium is second demister outlet flash evaporation steam, the second heat exchanger cold side working medium is waste water circulating pump outlet desulfurization waste water, the third heat exchanger hot side working medium is third demister outlet flash evaporation steam, and the third heat exchanger cold side working medium is cooling water 26.
The zeroth heat exchanger, the first heat exchanger and the second heat exchanger are shell-and-tube heat exchangers or wide-channel plate heat exchangers, and 2205 stainless steel, 2507 stainless steel or titanium is selected as a material.
The upper part of the liquid holding section is cylindrical, the ratio of the diameter of the upper part of the liquid holding section to the diameter of the main tower body of the concentration tower is 1:1-2:1, the lower part of the liquid holding section is conical, and the cone angle of the lower part of the liquid holding section is less than or equal to 90 DEG
The tail end of the waste water disturbing pipe penetrates into the cone section of the liquid holding section, and the radial included angle between the waste water disturbing pipe and the liquid holding section is more than or equal to 45 degrees.
The driving heat source is hot water, and the temperature of the driving heat source is 60-150 ℃.
The waste water inlet pipeline is used for conveying desulfurization waste water which is not subjected to precipitation, filtration and dosing pretreatment.
The working principle of the utility model is as follows:
The desulfurization waste water which is not pretreated enters a liquid holding section through a waste water inlet pipeline, is pumped into a second heat exchange section, a first heat exchanger and a zeroth heat exchanger in sequence through a waste water circulating pump, and enters a first flash chamber of a concentration tower after being heated, the pressure is reduced, the desulfurization waste water is vaporized and flashed to steam, the steam enters the desulfurization waste water heated and circulated by the first heat exchanger after demisting, the desulfurization waste water after temperature reduction continuously enters a second flash chamber and a third flash chamber, the steam with the flashed temperature reduced in sequence enters the second heat exchanger to heat the desulfurization waste water and the third heat exchanger to be condensed into condensed water respectively, the temperature of the desulfurization waste water after flashing is reduced, the moisture is reduced, and the desulfurization waste water is concentrated. The condensation water of the zeroth heat exchanger, the first heat exchanger, the second heat exchanger and the third heat exchanger enters the condensing tank for storage, and the non-condensation gas is pumped out through the vacuum pump, so that the vacuum degree of the flash tower is ensured.
Example two
Referring to fig. 5, the stacked multi-effect evaporation concentration device for wastewater in this embodiment includes a main tower body 1 of a concentration tower, a transition section 2 is arranged below the main tower body of the concentration tower, a liquid holding section 3 is arranged below the transition section, a wastewater concentrate outlet pipeline 4 is installed at the bottom of the liquid holding section, a wastewater inlet pipeline 5 is installed at the side wall of the liquid holding section, and the stacked multi-effect evaporation concentration device further includes:
The wastewater circulating pipeline 6 is arranged outside the main tower body of the concentration tower, one end of the wastewater circulating pipeline is communicated with the liquid holding section, and the other end of the wastewater circulating pipeline is communicated with the tower top of the main tower body of the concentration tower;
The first water distribution plate 7, the second water distribution plate 8, the third water distribution plate 9 and the fourth water distribution plate 30 are arranged in the main tower body of the concentration tower at intervals;
The first demisting device 10, the second demisting device 11, the third demisting device 12 and the fourth demisting device 31 are arranged on the outer side of the main tower body of the concentration tower, and openings of the first demisting device, the second demisting device, the third demisting device and the fourth demisting device are respectively positioned at the lower parts of the first water distribution plate, the second water distribution plate, the third water distribution plate and the fourth water distribution plate;
A wastewater circulating pump 13, a fourth heat exchanger 32, a second heat exchanger 14, a first heat exchanger 15 and a zeroth heat exchanger 16 which are sequentially arranged on the wastewater circulating pipeline from the liquid holding section to the tower top direction;
A third heat exchanger 26 connected to the third demisting device, the cooling water supply pipe 27, and the cooling water return pipe 28 through pipes;
A waste water disturbing pipe 17 with an inlet communicated with the outlet of the waste water circulating pump and an outlet communicated with the liquid holding section;
a condensing tank 18 connected to the second heat exchanger and the third heat exchanger through pipes;
a gas-liquid separator 19 connected to the top of the condensing tank through a pipe;
a vacuum pump 20 connected to the gas-liquid separator by a pipe.
The zero-th heat exchanger hot side working medium is a driving heat source 25, the zero-th heat exchanger cold side working medium is first heat exchanger outlet desulfurization waste water, the first heat exchanger hot side working medium is first demister outlet flash evaporation steam, the first heat exchanger cold side working medium is second heat exchanger outlet desulfurization waste water, the second heat exchanger hot side working medium is second demister outlet flash evaporation steam, the second heat exchanger cold side working medium is waste water circulating pump outlet desulfurization waste water, the fourth heat exchanger hot side working medium is third demister outlet flash evaporation steam, the fourth heat exchanger cold side working medium is waste water circulating pump outlet desulfurization waste water, the third heat exchanger hot side working medium is fourth demister outlet flash evaporation steam, and the third heat exchanger cold side working medium is cooling water 26.
Example III
Referring to fig. 6 and 7, in this embodiment, the first water distribution plate, the second water distribution plate, the third water distribution plate and the fourth water distribution plate are all flat plates with a plurality of water holes uniformly distributed in the middle.
Example IV
In this embodiment, the medium to be transported in the wastewater inlet pipeline is municipal wastewater, high-salt wastewater, or other wastewater.
Claims (10)
1. The utility model provides a fold vertical waste water multiple effect evaporation enrichment facility, includes concentration tower main tower body (1), the below of concentration tower main tower body (1) be changeover portion (2) the below of changeover portion (2) is for holding liquid section (3), waste water concentrated solution outlet pipe (4) are installed to the bottom of holding liquid section (3), waste water inlet pipe (5) are installed to the lateral wall of holding liquid section (3), a serial communication port, still include:
A wastewater circulating pipeline (6) which is arranged at the outer side of the main tower body (1) of the concentration tower, one end of which is communicated with the liquid holding section (3) and the other end of which is communicated with the top of the main tower body (1) of the concentration tower;
at least one water distribution plate arranged in the main tower body (1) of the concentration tower;
The demister is arranged at the outer side of the main tower body (1) of the concentration tower, and the openings of the demister are respectively positioned below each water distribution plate;
a wastewater circulating pump (13) and a plurality of heat exchangers which are arranged on the wastewater circulating pipeline (6);
and the condensing device is respectively connected with the heat exchangers through pipelines.
2. The multi-effect evaporation and concentration device for stacked wastewater is characterized by comprising a vertical pipeline (21), a demister body (22) arranged in the vertical pipeline (21) and an inclined pipeline (23) with one end connected with the vertical pipeline (21) and the other end connected with a main tower body (1) of a concentration tower, wherein the inclined pipeline (23) is inclined to the main tower body (1) of the concentration tower.
3. The multi-effect evaporation and concentration apparatus for wastewater in stacked form according to claim 2, wherein an included angle α between the inclined pipeline (23) and the horizontal direction is not less than 10 °.
4. The multi-effect evaporation and concentration apparatus for wastewater in stacked form according to claim 1, further comprising a wastewater disturbing pipe (17) having an inlet communicated with an outlet of the wastewater circulating pump (13) and an outlet communicated with the liquid holding section (3).
5. The multi-effect evaporation and concentration device for stacked wastewater according to claim 1, wherein the heat exchangers at least comprise a zeroth heat exchanger and a supplementary heat exchanger, an initial heat source of the zeroth heat exchanger is a driving heat source (25), a supplementary heat source of the supplementary heat exchanger is flash evaporation steam at an outlet of the demisting device, and a cold side working medium of the heat exchanger is desulfurization wastewater or cooling water.
6. The multi-effect evaporation and concentration device for wastewater in a stacked manner according to claim 1, 2, 3, 4 or 5, wherein the number of water distribution plates is at least two, and the number of demisting devices is the same as the number of water distribution plates.
7. The multi-effect evaporation and concentration device for wastewater in a stacked manner according to claim 6, wherein the heat exchanger is a shell-and-tube heat exchanger or a wide-channel plate heat exchanger, and is made of 2205 stainless steel, 2507 stainless steel or titanium.
8. The multi-effect evaporation and concentration device for stacked wastewater, as claimed in claim 6, is characterized in that the liquid holding section (3) is internally filled with desulfurization wastewater, the upper part of the liquid holding section (3) is cylindrical, and the lower part of the liquid holding section (3) is conical.
9. The multi-effect evaporation and concentration apparatus for wastewater in a stacked manner according to claim 4, wherein the tail end of the wastewater disturbing pipe (17) penetrates into the cone section of the liquid holding section (3).
10. The multi-effect evaporation and concentration apparatus for wastewater as claimed in claim 5, wherein said driving heat source (25) is steam, hot water or flue gas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202422772521.0U CN223561330U (en) | 2024-11-13 | 2024-11-13 | Stacked multi-effect evaporation concentration device for wastewater |
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| CN202422772521.0U CN223561330U (en) | 2024-11-13 | 2024-11-13 | Stacked multi-effect evaporation concentration device for wastewater |
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