CN211998907U - Concentrated flue of desulfurization waste water and processing apparatus - Google Patents
Concentrated flue of desulfurization waste water and processing apparatus Download PDFInfo
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- CN211998907U CN211998907U CN202020432367.1U CN202020432367U CN211998907U CN 211998907 U CN211998907 U CN 211998907U CN 202020432367 U CN202020432367 U CN 202020432367U CN 211998907 U CN211998907 U CN 211998907U
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Abstract
The utility model relates to the technical field of desulfurization wastewater treatment, in particular to a desulfurization wastewater concentration flue and a treatment device, wherein the flue comprises at least one horizontal flue and at least one vertical flue; the horizontal flues and the vertical flues are sequentially and alternately communicated; or the vertical flues and the horizontal flues are sequentially and alternately communicated; a plurality of first water distribution mechanisms are arranged on the horizontal flue; and a second water distribution mechanism is arranged at the joint of the vertical flue and the next level of horizontal flue along the flow direction of the flue gas. Desulfurization waste water can enter a horizontal flue and a vertical flue through a first water distribution mechanism and a second water distribution mechanism respectively for evaporation concentration, the first water distribution mechanism and the second water distribution mechanism fully utilize the characteristics of the horizontal flue and the vertical flue, the evaporation time of waste water in the flue is prolonged, a large amount of liquid drops caused by direct spraying are effectively prevented from migrating to a desulfurization tower, and the concentration efficiency and the applicability of the flue are improved.
Description
Technical Field
The utility model belongs to the technical field of desulfurization waste water treatment technique and specifically relates to a concentrated flue of desulfurization waste water and processing apparatus is related to.
Background
With the rapid development of the industry in China, the power demand is rapidly increased, and coal-fired power generation is the main power generation mode in the present stage of China. The coal combustion generates a large amount of pollutants, most thermal power plants are provided with a desulfurization system in order to meet the national flue gas treatment strength, and among numerous desulfurization technologies, the limestone-gypsum wet flue gas desulfurization technology has the advantages of mature technology, high desulfurization efficiency, wide applicable coal variety, strong adaptability to boiler load change, cheap absorbent raw materials, recyclable byproducts and the like, and becomes the first choice of the desulfurization process of the thermal power plants. However, the process has the defects of generating a large amount of desulfurization wastewater, and the desulfurization wastewater has high salt content, complex composition, corrosiveness and strong pollution, can be discharged only by being treated independently, or can cause serious pollution to the environment.
Concentration is a key procedure in the desulfurization wastewater treatment process, a low-temperature flue concentration process is generally adopted in the conventional desulfurization wastewater concentration treatment, and the low-temperature flue gas waste heat is adopted, so that the method has the advantages of simple process and low operation cost. However, the existing low-temperature flue evaporation device is generally set as a single treatment flue due to the limitation of construction space, and the single flue is often difficult to achieve an ideal concentration effect due to the problems of insufficient length, low evaporation efficiency and the like. In addition, the desulfurization waste water is directly sprayed into the flue, the action time of the desulfurization waste water and the flue gas is short, and waste water liquid drops are brought into the desulfurization tower after being evaporated, so that the concentration efficiency of the low-temperature flue is further low, and the applicability is poor.
Therefore, in view of the defects and shortcomings of the existing desulfurization waste water flue, the development of a novel desulfurization waste water concentration flue has important application value.
SUMMERY OF THE UTILITY MODEL
The first purpose of the utility model is to provide a desulfurization waste water concentration flue, which effectively solves the problem of low evaporation efficiency of the existing flue;
a second object of the utility model is to provide a concentrated processing apparatus of desulfurization waste water, it is low to aim at solving current desulfurization waste water concentration efficiency, the poor problem of suitability.
The utility model provides a desulfurization waste water concentration flue, which comprises at least one horizontal flue and at least one vertical flue;
the horizontal flues and the vertical flues are sequentially and alternately communicated;
or the vertical flues and the horizontal flues are sequentially and alternately communicated;
a plurality of first water distribution mechanisms are arranged on the horizontal flue;
and a second water distribution mechanism is arranged at the joint of the vertical flue and the next level of horizontal flue along the flow direction of the flue gas.
The utility model discloses a concentrated flue of desulfurization waste water includes at least one horizontal flue and at least one vertical flue, and the first order flue both can be horizontal flue and can be vertical flue again, and horizontal flue and vertical flue communicate in proper order in turn promptly, or vertical flue and horizontal flue communicate in proper order in turn, and the mode that the horizontal vertical flue communicates in turn in proper order can effectively solve among the current low temperature flue evaporation plant, because of construction space's restriction, the problem that the single flue evaporation efficiency of setting is low. In addition, the horizontal flue is provided with a plurality of first water distribution mechanisms, the joint of the vertical flue and the next-stage horizontal flue is provided with a second water distribution mechanism along the flow direction of flue gas, and the arrangement of the first water distribution mechanisms and the second water distribution mechanisms fully utilizes the characteristics of the horizontal flue and the vertical flue, thereby improving the evaporation time of waste water in the flue, effectively avoiding liquid drops caused by direct spraying from migrating to the desulfurizing tower in a large quantity, and improving the concentration efficiency and the applicability of the flue.
Further, the first water distribution mechanism comprises a water distributor which is movably arranged outside the horizontal flue and a drainage pipeline which is arranged inside the horizontal flue;
one end of the drainage pipeline is abutted against the bottom wall of the horizontal flue, and the other end of the drainage pipeline extends to the top wall of the horizontal flue;
the water distributor comprises a first main pipe and a plurality of first branch pipes, wherein all the first branch pipes are distributed on the first main pipe, one end of each first branch pipe is communicated with the first main pipe, and the other end of each first branch pipe penetrates through the top wall of the horizontal flue and is detachably connected with the drainage pipeline.
The second water distribution mechanism of the last setting of horizontal flue includes the water-locator of portable setting in the horizontal flue outside and sets up the inside drainage line of horizontal flue, wherein, drainage line's one end offsets with horizontal flue's diapire, the other end extends to horizontal flue's roof, the water-locator includes first person in charge and a plurality of first branch pipe, all first branch pipe evenly distributed are on first person in charge, and communicate with first person in charge, the other end passes horizontal flue's roof and can dismantle with drainage line and be connected, drainage line's one end offsets with horizontal flue's diapire promptly, the other end can dismantle with first branch pipe and be connected. The first water distribution mechanism is arranged in a manner that the desulfurization wastewater enters each first branch pipe through the first main pipe, the water discharged from the first branch pipe enters the horizontal flue and then flows from the top wall of the horizontal flue to the bottom wall of the horizontal flue from top to bottom along the drainage pipeline, and the wastewater is subjected to sufficient heat exchange with the flue gas in the flowing process, so that the evaporation time of the wastewater is prolonged, and the wastewater concentration efficiency is improved. And the drainage pipeline is detachably connected with the first branch pipe, and when scaling is formed on the drainage pipeline, the drainage pipeline can be timely detached and cleaned.
Further, the second water distribution mechanism comprises a second main pipe and a plurality of second branch pipes;
two ends of the second main pipe are leant against the side wall of the vertical flue and are perpendicular to the axial direction of the vertical flue;
all the second branch pipes are uniformly distributed on the second main pipe and are communicated with the second main pipe; and the outlet end of each second branch pipe is provided with a rubber water nozzle.
The second water distribution mechanism comprises a second main pipe and a plurality of second branch pipes, two ends of the second main pipe are abutted against the side wall of the vertical flue and are perpendicular to the axis of the vertical flue, namely the second main pipe is installed at the uppermost end of the vertical pipeline, and the second main pipe is perpendicular to the axis of the vertical flue. Like this, waste water is responsible for the back by the second and gets into, is flowed by the second branch pipe respectively, and the waste water top-down that flows out flows to the bottom of vertical flue, can carry out abundant heat exchange with the flue gas at the flow in-process, and then realizes the concentration to desulfurization waste water. The outlet end of each second branch pipe is provided with a rubber water nozzle, the arrangement of the rubber water nozzles can adjust and control the opening degree through pressure, and scaling of the rubber water nozzles is avoided.
Furthermore, the drainage pipelines are parallel to each other and form an included angle of 30-90 degrees with the axial direction of the horizontal flue.
The drainage pipelines are parallel to each other and form an included angle of 30-90 degrees with the axial direction of the horizontal flue, namely, the included angle between the drainage pipelines and the upward wind direction of the flow velocity of the flue gas is 30-90 degrees, so that the flow direction of the water flow and the flow direction of the flue gas are integrated into a direction, and the action time of the flue gas and the water flow is prolonged.
Further, the drainage pipeline is of a tubular or solid structure, and a thread structure is arranged on the outer surface of the drainage pipeline.
The drainage pipeline only plays the effect of the drainage of rivers, consequently, the drainage pipeline can be for tubular or solid construction, and the surface of drainage pipeline sets up the helicitic texture and can promote drainage and heat transfer effect.
Further, when the horizontal flues and the vertical flues are sequentially and alternately communicated, water collecting grooves are arranged at the flue gas inlet of the first-stage horizontal flue and the lower end of the vertical flue along the flue gas flowing direction;
when the vertical flue and the horizontal flue are sequentially and alternately communicated, the lower end of the vertical flue is provided with a water collecting tank;
the water collecting grooves are all in a conical structure, and the cone angle is 30-150 degrees.
When the horizontal flue and the vertical flue are sequentially and alternately communicated, namely when the flues are arranged by the horizontal flue, the vertical flue and the horizontal flue, along the flow direction of flue gas, a water collecting tank is arranged at the flue gas inlet of the first-stage horizontal flue and the lower end of the vertical flue, the water collecting tank is arranged at the flue gas inlet of the first-stage horizontal flue and is used for collecting the concentrated wastewater of the first-stage horizontal flue, and the water collecting tank is arranged at the lower end of the vertical flue and is used for collecting the concentrated wastewater of the vertical flue and the next-stage horizontal flue; when vertical flue and horizontal flue communicate in turn, when the flue was arranged with vertical flue, horizontal flue and vertical flue promptly, only need the lowermost end in vertical flue set up the water catch bowl can, the concentrated waste water of vertical flue and next stage horizontal flue can be collected to this water catch bowl. The water collecting tank is of a conical structure, the cone angle is 30-150 degrees, and the conical structure is convenient for collecting concentrated wastewater.
Further, along the flow direction of the flue gas, a water baffle is arranged at the flue gas outlet end of the last level of the horizontal flue; the height of the water baffle is 5-15 cm.
Along the flue gas flow direction, the flue gas outlet end of the last level horizontal flue is provided with a water baffle plate to prevent the concentrated wastewater in the horizontal flue from overflowing to the subsequent process to influence the wastewater concentration efficiency. According to the amount of the concentrated water, the height of the water baffle is set to be 5-15cm, so that the concentrated wastewater can be effectively prevented from overflowing.
Furthermore, the horizontal flue and the vertical flue are both provided with temperature and humidity monitors.
The temperature and humidity monitors are arranged on the horizontal flue and the vertical flue, so that parameters such as flue gas temperature and flue gas humidity in the horizontal flue and the vertical flue can be monitored in real time, the amount of wastewater entering the horizontal flue and the vertical flue is adjusted, and the wastewater concentration efficiency is improved.
A desulfurization wastewater concentration treatment device comprises a regulating reservoir, a clarification tank, a buffer tank and the flue;
the adjusting tank, the clarification tank, the buffer tank and the flue are communicated in sequence;
the horizontal flue and the vertical flue are respectively communicated with the buffer tank through the first water distribution mechanism and the second water distribution mechanism;
the horizontal flue and the vertical flue are communicated with the regulating tank in the reverse direction.
The utility model provides a concentrated processing apparatus of desulfurization waste water includes equalizing basin, depositing reservoir, buffer pool and foretell flue, and wherein, equalizing basin, depositing reservoir, buffer pool and flue communicate in proper order, and horizontal flue and vertical flue communicate with the buffer pool through first water distribution mechanism and second water distribution mechanism respectively. Namely, the desulfurization waste water is pretreated by the regulating reservoir, the clarification tank and the buffer tank in sequence, and then heavy metal ions and solid suspended matters in the desulfurization waste water are preliminarily removed so as to reduce the corrosion and scale formation to the flue in the subsequent flue evaporation process. Desulfurization waste water gets into horizontal flue and vertical flue respectively to through the introduction and the reasonable use of first water distribution mechanism and second water distribution mechanism, horizontal flue and vertical flue can be fully utilized, waste water evaporation time in the flue is ensured, consequently, can strengthen flue evaporation process's suitability by a wide margin, effectively avoid directly spraying the liquid drop that causes to migrate to the desulfurizing tower in a large number, improve concentration efficiency. The horizontal flue and the vertical flue are communicated with the regulating tank in the reverse direction, namely the concentrated wastewater can be returned to the regulating tank for repeated treatment.
A desulfurization wastewater concentration treatment device comprises a regulating reservoir, a clarification tank, a buffer tank and the flue;
the adjusting tank, the clarification tank, the buffer tank and the flue are communicated in sequence;
the horizontal flue and the vertical flue are respectively communicated with the buffer tank through the first water distribution mechanism and the second water distribution mechanism, and regulating valves are arranged among the horizontal flue, the vertical flue and the buffer tank;
when the horizontal flues and the vertical flues are sequentially and alternately communicated, water collecting grooves are arranged at the flue gas inlet of the first-stage horizontal flue and the lower end of the vertical flue along the flue gas flowing direction;
when the vertical flue and the horizontal flue are sequentially and alternately communicated, the lower end of the vertical flue is provided with a water collecting tank;
the water collecting grooves are communicated with the adjusting tank.
The horizontal flue and the vertical flue are reversely communicated with the regulating tank through a water collecting tank arranged on the horizontal flue or the vertical flue, namely, wastewater in the water collecting tank flows back to the regulating tank for repeated treatment, and when the wastewater in the water collecting tank reaches an expected concentration multiple, concentrated water is directly discharged for subsequent treatment. All be provided with the governing valve between horizontal flue and the vertical flue and the buffer pool, the adjustable buffer pool of governing valve gets into the water yield of each horizontal flue and vertical flue, realizes the accurate control to each section waste water volume.
The utility model discloses a concentrated flue of desulfurization waste water, compared with the prior art, has following advantage:
the utility model discloses an among the concentrated flue of desulfurization waste water, horizontal flue and vertical flue set up in turn in proper order, space utilization has not only been improved, and flue length has been prolonged, evaporation efficiency is improved, furthermore, desulfurization waste water can carry out evaporative concentration in getting into horizontal flue and vertical flue through first water distribution mechanism and second water distribution mechanism respectively, first water distribution mechanism and second water distribution mechanism make full use of the characteristics of horizontal flue and vertical flue, waste water evaporation time in the flue has been improved, effectively avoided directly spraying in a large amount of migration to the desulfurizing tower of liquid drop that causes, the concentrated efficiency and the suitability of flue have been improved.
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 embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are 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 a flue for concentrating desulfurization waste water according to the present invention;
FIG. 2 is a schematic view of the desulfurization waste water concentration treatment device of the present invention.
Description of reference numerals:
1: a horizontal flue; 2: a vertical flue; 3: a water distributor; 4: a drainage line; 5: a first main tube; 6: a first branch pipe; 7: a second main pipe; 8: a second branch pipe; 9: a rubber water nozzle; 10: a water collection tank; 11: a water baffle; 12: a temperature and humidity monitor; 13: a regulating tank; 14: a clarification tank; 15: a buffer pool; 16: adjusting a valve; 17: a desulfurizing tower.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the desulfurization wastewater concentrating flue of the present invention comprises at least one horizontal flue 1 and at least one vertical flue 2; the horizontal flues 1 and the vertical flues 2 are sequentially and alternately communicated; or the vertical flues 2 and the horizontal flues 1 are sequentially and alternately communicated; a plurality of first water distribution mechanisms are arranged on the horizontal flue 1; and a second water distribution mechanism is arranged at the joint of the vertical flue 2 and the next level of the horizontal flue 1 along the flowing direction of the flue gas.
The utility model discloses a concentrated flue of desulfurization waste water, including at least one horizontal flue 1 and at least one vertical flue 2, horizontal flue 1 and vertical flue 2 communicate in turn in proper order, or vertical flue 2 and horizontal flue 1 communicate in turn in proper order, along the flue gas flow direction promptly, the flue can horizontal flue 1, vertical flue 2, horizontal flue 1 communicate in turn in proper order, or communicate in turn in proper order with vertical flue 2, horizontal flue 1, vertical flue 2. The horizontal flue 1 is provided with a plurality of first water distribution mechanisms, and a second water distribution mechanism is arranged at the joint of the vertical flue 2 and the next-stage horizontal flue 1 along the flow direction of flue gas. The introduction and reasonable use of the multi-stage flue and the multi-stage water distribution mechanism can fully utilize the horizontal flue 1 and the vertical flue 2 to ensure the evaporation time of the wastewater in the flue, thereby greatly enhancing the applicability of the flue evaporation process, effectively avoiding the liquid drops caused by direct spraying from being transferred to the desulfurizing tower 17 in large quantity and providing the concentration efficiency of the system.
On the basis of the technical scheme, the first water distribution mechanism further comprises a water distributor 3 which is movably arranged outside the horizontal flue 1 and a drainage pipeline 4 which is arranged inside the horizontal flue 1; one end of the drainage pipeline 4 is abutted against the bottom wall of the horizontal flue 1, and the other end of the drainage pipeline extends to the top wall of the horizontal flue 1; the water distributor 3 comprises a first main pipe 5 and a plurality of first branch pipes 6, wherein all the first branch pipes 6 are distributed on the first main pipe 5, one end of each first branch pipe is communicated with the first main pipe 5, and the other end of each first branch pipe penetrates through the top wall of the horizontal flue 1 and is detachably connected with the drainage pipeline 4
The first water distribution mechanism comprises a water distributor 3 movably arranged on the outer side of the horizontal flue 1 and a drainage pipeline 4 arranged inside the horizontal flue 1, one end of the drainage pipeline 4 is abutted to the bottom wall of the horizontal flue 1, the other end of the drainage pipeline extends to the top wall of the horizontal flue 1, and waste water drops entering the next-stage flue or the desulfurizing tower 17 can be reduced by the drainage pipeline 4. The water distributor 3 comprises a first main pipe 5 and a plurality of first branch pipes 6, the first branch pipes 6 are all distributed on the first main pipe 5 and are communicated with the first main pipe 5, and the other ends of the first branch pipes penetrate through the bottom wall of the horizontal flue 1 and are detachably connected with the drainage pipeline 4. The desulfurization waste water enters from the first main pipe 5 and then flows out from the first branch pipes 6 respectively, and the flowing-out waste water flows to the bottom of the horizontal flue 1 from top to bottom along the outer surface of the drainage pipeline 4.
On the basis of the above technical solution, it is further preferable that the second water distribution mechanism includes a second main pipe 7 and a plurality of second branch pipes 8; the two ends of the second main pipe 7 are lower against the side wall of the vertical flue 2 and are perpendicular to the axial direction of the vertical flue 2; all the second branch pipes 8 are uniformly distributed on the second main pipe 7 and are communicated with the second main pipe 7; the outlet end of each second branch pipe 8 is provided with a rubber water nozzle 9.
The second water distribution mechanism comprises a second main pipe 7 and a plurality of second branch pipes 8, the second main pipe 7 is arranged at the vertical upper end, two ends of the second main pipe are abutted against the side wall of the vertical flue 2, and the second branch pipes 8 are uniformly distributed on the second main pipe 7 and communicated with the second main pipe 7. Like this, waste water is responsible for 7 entering by the second, distributes and flows by second branch pipe 8, and the waste water and the flue gas interact of outflow carry out the concentration to waste water, and the exit end of every second branch pipe 8 is provided with rubber water injection well choke 9, and rubber water injection well choke 9 is that sulfur acid resistance nature such as butyl rubber, fluororubber is strong and high temperature resistant material, and rubber water injection well choke 9 has certain elasticity, and the accessible is intake pressure adjustment and is controlled the aperture, avoids the water injection well choke scale deposit. When the next-stage horizontal flue 1 is positioned at the upper part of the vertical flue 2, the lower edge of the rubber water nozzle 9 is not higher than the bottom of the next-stage horizontal flue 1; when the front level horizontal flue 1 is positioned at the lower part of the vertical flue 2, the lower edge of the rubber water nozzle 9 is not higher than the bottom height of the upper level horizontal flue 1.
On the basis of the technical scheme, preferably, the drainage pipelines 4 are parallel to each other and form an included angle of 30-90 degrees with the axial direction of the horizontal flue 1.
The included angles of the drainage pipelines 4 which are parallel to each other and are axial to the horizontal flue 1 are 30-90 degrees, namely the included angles of the drainage pipelines 4 and the upward wind direction of the flow velocity of the flue gas are 30-90 degrees, so that the flow direction of the water flow and the flow direction of the flue gas are integrated into one direction, and the action time of the flue gas and the water flow is prolonged.
In order to improve the drainage and heat exchange effects of the drainage pipeline 4, the drainage pipeline 4 is of a tubular or solid structure, and the outer surface of the drainage pipeline 4 is provided with a thread structure.
On the basis of the above preferred technical solution, more preferably, when the horizontal flues 1 and the vertical flues 2 are sequentially and alternately communicated, along the flue gas flowing direction, the flue gas inlet of the horizontal flue 1 and the lower end of the vertical flue 2 at the first stage are provided with water collecting troughs 10; when the vertical flue 2 and the horizontal flue 1 are sequentially and alternately communicated, the lower end of the vertical flue 2 is provided with a water collecting tank 10; the water collecting grooves 10 are all in a conical structure, and the cone angle is 30-150 degrees.
When the horizontal flues 1 and the vertical flues 2 are sequentially and alternately communicated, namely when the flues are arranged by the horizontal flues 1, the vertical flues 2 and the horizontal flues 1, along the flue gas flowing direction, the flue gas inlet of the first-stage horizontal flue 1 and the lower end of the vertical flue 2 are provided with a water collecting tank 10; when the vertical flues 2 and the horizontal flues 1 are sequentially communicated in turn, namely when the flues are arranged by the vertical flues 2, the horizontal flues 1 and the vertical flues 2, only the water collecting tank 10 is required to be arranged at the lowest end of the vertical flues 2, the water collecting tank 10 is in a conical structure, the cone angle is 30-150 degrees, and when the cone angle is less than 30 degrees, mud scraping plates can be arranged at two sides of the water collecting tank 10 according to the water quality condition.
On the basis of the preferred technical scheme, along the flow direction of the flue gas, the flue gas outlet end of the last level of the horizontal flue 1 is provided with a water baffle plate 11; the height of the water baffle plate 11 is 5-15 cm.
Along the flue gas flow direction, the flue gas outlet end of the last level horizontal flue 1 is provided with a water baffle 11 to prevent the concentrated wastewater in the horizontal flue 1 from overflowing to the subsequent process and influencing the wastewater concentration efficiency. The water baffle 11 is made of corrosion-resistant material and has a height of 5-15 cm.
For monitoring parameters such as flue gas temperature and flue gas humidity in the horizontal flue 1 and the vertical flue 2 in real time, the horizontal flue 1 and the vertical flue 2 are both provided with a temperature and humidity monitor 12.
As shown in fig. 2, the desulfurization wastewater concentration treatment device of the present invention comprises a regulating tank 13, a clarification tank 14, a buffer tank 15 and the above-mentioned flue; the adjusting tank 13, the clarification tank 14, the buffer tank 15 and the flue are communicated in sequence; the horizontal flue 1 and the vertical flue 2 are respectively communicated with the buffer pool 15 through the first water distribution mechanism and the second water distribution mechanism; the horizontal flue 1 and the vertical flue 2 are communicated with the regulating tank 13 in opposite directions.
The utility model discloses a concentrated processing apparatus of desulfurization waste water includes equalizing basin 13, depositing reservoir 14, buffer pool 15 and foretell flue, and wherein, equalizing basin 13, depositing reservoir 14, buffer pool 15 and flue communicate in proper order, and horizontal flueThe 1 and the vertical flue 2 are respectively communicated with a buffer pool 15 through a first water distribution mechanism and a second water distribution mechanism. SO in the wastewater is adjusted by an adjusting tank 133 2-Oxidation to SO4 2-Adjusting the pH value of the wastewater to be neutral, adding a proper amount of flocculating agent and coagulant aid, clarifying by a clarification tank 14 to ensure that the concentration of solid flocculate is less than 1000mg/L, storing effluent to a buffer tank 15, and when the flue is evaporated, enabling the effluent of the buffer tank 15 to respectively enter a horizontal flue 1 and a vertical flue 2 behind an induced draft fan. After the desulfurization wastewater is pretreated by the regulating tank 13, the clarification tank 14 and the buffer tank 15 in sequence, heavy metal ions and solid suspended matters in the desulfurization wastewater can be preliminarily removed, and the corrosion and scaling of the flue in the subsequent flue evaporation process are reduced. Desulfurization waste water gets into horizontal flue 1 and vertical flue 2 respectively to through the introduction and the rational use of first water distribution mechanism and second water distribution mechanism, can make full use of horizontal flue 1 and vertical flue 2, guarantee the interior waste water evaporation time of flue, consequently, can strengthen flue evaporation process's suitability by a wide margin, effectively avoid directly spraying the liquid drop that causes to migrate to desulfurizing tower 17 in a large number, improve concentration efficiency. The horizontal flue 1 and the vertical flue 2 are communicated with the regulating tank 13 in reverse direction, namely the concentrated wastewater can be returned to the regulating tank 13 for repeated treatment.
As shown in fig. 2, the desulfurization wastewater concentration treatment device of the present invention comprises a regulating tank 13, a clarification tank 14, a buffer tank 15 and the above-mentioned flue; the adjusting tank 13, the clarification tank 14, the buffer tank 15 and the flue are communicated in sequence; the horizontal flue 1 and the vertical flue 2 are respectively communicated with the buffer pool 15 through the first water distribution mechanism and the second water distribution mechanism, and regulating valves 16 are arranged among the horizontal flue 1, the vertical flue 2 and the buffer pool 15; when the horizontal flues 1 and the vertical flues 2 are sequentially and alternately communicated, water collecting grooves 10 are arranged at the flue gas inlet of the horizontal flue 1 and the lower end of the vertical flue 2 at the first stage along the flue gas flowing direction; when the vertical flue 2 and the horizontal flue 1 are sequentially and alternately communicated, the lower end of the vertical flue 2 is provided with a water collecting tank 10; the water collecting grooves 10 are communicated with the adjusting tank 13.
The horizontal flue 1 and the vertical flue 2 are reversely communicated with the adjusting tank 13 through the water collecting tank 10 arranged on the horizontal flue 1 or the vertical flue 2, namely, the wastewater in the water collecting tank 10 flows back to the adjusting tank 13 for repeated treatment, and when the wastewater in the water collecting tank 10 reaches the expected concentration multiple, the concentrated water is directly discharged for subsequent treatment. All be provided with governing valve 16 between horizontal flue 1 and vertical flue 2 and the buffer pool 15, the adjustable buffer pool 15 of governing valve gets into the water yield of each horizontal flue 1 and vertical flue 2, realizes the accurate control to each section waste water volume.
Examples
The actual desulfurization wastewater of a certain power plant is taken as a treatment object, a field test with the field treatment capacity of 2 tons/hour is carried out, the wastewater is discharged by adopting the existing triple box system, and the concentration of main pollutants in the wastewater is shown in table 1.
TABLE 1 concentration of major contaminants in wastewater
| Index (I) | Unit of | Numerical value |
| SS | mg/L | 1349 |
| pH | mg/L | 8.2 |
| Ca2+ | mg/L | 2238 |
| Mg2+ | mg/L | 4157 |
| TDS | mg/L | 21048 |
| Cl- | mg/L | 9041 |
Firstly, desulfurization wastewater sequentially enters an adjusting tank 13, a clarification tank 14 and a buffer tank 15, aeration treatment is carried out on the desulfurization wastewater in the adjusting tank 13 for 30min, the pH value is adjusted to 7.5, water is discharged to the clarification tank 14, a proper amount of flocculating agent and coagulant aid are added, and the concentration SS of suspended solid in the wastewater after clarification is about 80 mg/L. The clarifying tank 14 discharges water to the buffer tank 15, and then the water respectively enters a horizontal flue 1, a vertical flue 2 and a horizontal flue 13, the water distribution amount of the 3 sections of flues is respectively 0.8 ton/h, 0.6 ton/h and 0.6 ton/h, the wastewater is uniformly distributed by a first water distribution mechanism and a second water distribution mechanism after entering the flues, the wastewater in the 2 sections of horizontal flues 1 flows from top to bottom along the outer side of a drainage pipeline 4, the included angle between the drainage pipeline 4 and the air direction of flue gas is 45 degrees, the drainage pipeline 4 is made of polytetrafluoroethylene, the wastewater is heated by hot flue gas, evaporation and concentration are carried out on the surface of the drainage pipeline 4, water vapor enters a desulfurization system along with the flue gas, and the wastewater in the vertical flue 2 is subjected to heat exchange and evaporation with the flue gas flowing upwards under the action of gravity after being distributed by the second water distribution mechanism.
Experiments show that the waste water is concentrated from 2 tons/hour to 0.5 tons/hour after the waste water is concentrated once. Table 2 shows the water quality of the concentrated wastewater.
TABLE 2 quality of concentrated wastewater
As can be seen from the data in tables 1 and 2, Suspended Solids (SS), heavy metals, Total Dissolved Solids (TDS) and Cl were present in the concentrated wastewater-The concentration of (2) is greatly improved. Therefore, the utility model discloses a desulfurization waste water enrichment facility make full use of horizontal flue 1 and vertical flue 2, ensured waste water evaporation time in the flue, improved the suitability of flue evaporation technology by a wide margin, improved waste water concentration efficiency.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. The desulfurization wastewater concentration flue is characterized by comprising at least one horizontal flue (1) and at least one vertical flue (2);
the horizontal flues (1) and the vertical flues (2) are sequentially and alternately communicated;
or the vertical flues (2) and the horizontal flues (1) are sequentially and alternately communicated;
a plurality of first water distribution mechanisms are arranged on the horizontal flue (1);
and a second water distribution mechanism is arranged at the joint of the vertical flue (2) and the next level of horizontal flue (1) along the flowing direction of the flue gas.
2. The flue according to claim 1, wherein the first water distribution mechanism comprises a water distributor (3) movably arranged outside the horizontal flue (1) and a drainage pipeline (4) arranged inside the horizontal flue (1);
one end of the drainage pipeline (4) is abutted against the bottom wall of the horizontal flue (1), and the other end of the drainage pipeline extends to the top wall of the horizontal flue (1);
the water distributor (3) comprises a first main pipe (5) and a plurality of first branch pipes (6), all the first branch pipes (6) are distributed on the first main pipe (5), one end of each first branch pipe is communicated with the first main pipe (5), and the other end of each first branch pipe penetrates through the top wall of the horizontal flue (1) and is detachably connected with the drainage pipeline (4).
3. The flue according to claim 1 wherein the second water distribution mechanism comprises a second main pipe (7) and a plurality of second branch pipes (8);
the two ends of the second main pipe (7) are leant against the side wall of the vertical flue (2) and are vertical to the axial direction of the vertical flue (2);
all the second branch pipes (8) are uniformly distributed on the second main pipe (7) and are communicated with the second main pipe (7); the outlet end of each second branch pipe (8) is provided with a rubber water nozzle (9).
4. A flue according to claim 2 wherein the draft lines (4) are parallel to each other and form an angle of 30-90 ° with the axial direction of the horizontal flue (1).
5. A flue according to claim 4, wherein the tapping line (4) is of tubular or solid construction and the external surface of the tapping line (4) is provided with a threaded construction.
6. The flue according to claim 1, wherein when the horizontal flues (1) and the vertical flues (2) are communicated alternately in sequence, a water collecting tank (10) is arranged at the flue gas inlet of the horizontal flue (1) and the lower end of the vertical flue (2) in the flue gas flowing direction;
when the vertical flues (2) and the horizontal flues (1) are sequentially and alternately communicated, the lower ends of the vertical flues (2) are provided with water collecting grooves (10);
the water collecting grooves (10) are all in a conical structure, and the cone angle is 30-150 degrees.
7. The flue according to claim 1, wherein the flue gas outlet end of the last level of the horizontal flue (1) is provided with a water baffle (11) along the flow direction of the flue gas; the height of the water baffle (11) is 5-15 cm.
8. The flue according to claim 1, wherein the horizontal flue (1) and the vertical flue (2) are provided with temperature and humidity monitors (12).
9. A desulfurization wastewater concentration treatment device, which is characterized by comprising a regulating reservoir (13), a clarification reservoir (14), a buffer reservoir (15) and a flue according to any one of claims 1 to 8;
the adjusting tank (13), the clarification tank (14), the buffer tank (15) and the flue are communicated in sequence;
the horizontal flue (1) and the vertical flue (2) are respectively communicated with the buffer pool (15) through the first water distribution mechanism and the second water distribution mechanism;
the horizontal flue (1) and the vertical flue (2) are communicated with the regulating tank (13) in a reverse direction.
10. A desulfurization wastewater concentration treatment device, which is characterized by comprising a regulating reservoir (13), a clarification reservoir (14), a buffer reservoir (15) and a flue of claim 1;
the adjusting tank (13), the clarification tank (14), the buffer tank (15) and the flue are communicated in sequence;
the horizontal flue (1) and the vertical flue (2) are respectively communicated with the buffer pool (15) through the first water distribution mechanism and the second water distribution mechanism, and regulating valves (16) are arranged among the horizontal flue (1), the vertical flue (2) and the buffer pool (15);
when the horizontal flues (1) and the vertical flues (2) are sequentially and alternately communicated, water collecting grooves (10) are arranged at the flue gas inlet of the horizontal flue (1) and the lower end of the vertical flue (2) at the first stage along the flue gas flowing direction;
when the vertical flues (2) and the horizontal flues (1) are sequentially and alternately communicated, the lower ends of the vertical flues (2) are provided with water collecting grooves (10);
the water collecting grooves (10) are communicated with the adjusting tank (13).
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| CN202020432367.1U CN211998907U (en) | 2020-03-30 | 2020-03-30 | Concentrated flue of desulfurization waste water and processing apparatus |
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| CN202020432367.1U CN211998907U (en) | 2020-03-30 | 2020-03-30 | Concentrated flue of desulfurization waste water and processing apparatus |
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