CN113716642A - Device for concentrating desulfurization wastewater by using waste heat and low-temperature flue gas concentration device - Google Patents
Device for concentrating desulfurization wastewater by using waste heat and low-temperature flue gas concentration device Download PDFInfo
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- CN113716642A CN113716642A CN202111048820.4A CN202111048820A CN113716642A CN 113716642 A CN113716642 A CN 113716642A CN 202111048820 A CN202111048820 A CN 202111048820A CN 113716642 A CN113716642 A CN 113716642A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/16—Treatment of water, waste water, or sewage by heating by distillation or evaporation using waste heat from other processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
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Abstract
The invention relates to a device for concentrating desulfurization wastewater by utilizing waste heat and a low-temperature flue gas concentration device, wherein the device for concentrating desulfurization wastewater by utilizing waste heat comprises an evaporation structure, a water storage tank, a circulating pump, a water supplementing pipe and a water collecting pipe; the plurality of evaporation structures are arranged in a layered mode in the vertical direction; each layer of evaporation structure is fixed at a smoke inlet of the desulfurization absorption tower; the top of the water storage tank is provided with an input port, and the lower part of one side of the water storage tank is provided with an output port; the input end of the circulating pump is communicated with the output port of the water storage tank, and the output end of the circulating pump is communicated with the water replenishing pipe; the water replenishing pipe is vertically arranged and communicated with the at least one layer of evaporation structure; the water collecting pipe is vertically arranged and is respectively communicated with the at least one layer of evaporation structure and the input port of the water storage tank. The flue gas that is about to get into in the inlet flue gas of desulfurization absorption tower has the heat, can flow through every layer of evaporation structure's top side and bottom side, carries out conduction and heat convection with the desulfurization waste water on the evaporation structure, so for the heat of low temperature flue gas is by rational utilization, has improved the heat utilization ratio of low temperature flue gas.
Description
Technical Field
The invention relates to the technical field of desulfurization wastewater treatment, in particular to a device for concentrating desulfurization wastewater by using waste heat and a low-temperature flue gas concentration device.
Background
The desulfurization absorption tower mainly has the function of circularly spraying the slurry mixed with limestone and gypsum to absorb sulfur dioxide in the flue gas entering the absorption tower. In order to balance chloride ions in the absorption tower in the reaction process of the desulfurization absorption tower, a certain amount of desulfurization wastewater needs to be discharged periodically, and the wastewater has complex components, high salt content, can not be recycled and can only realize zero discharge.
Therefore, how to reasonably combine the heat energy of the low-temperature flue gas flowing through the flue gas inlet of the desulfurization absorption tower with zero emission of the desulfurization wastewater, and realizing low-cost concentration by utilizing the heat energy concentration and decrement desulfurization wastewater of the low-temperature flue gas becomes a technical problem to be solved urgently in the field.
Disclosure of Invention
In order to solve the problem that the heat of the low-temperature flue gas flowing through the flue gas inlet of the desulfurization absorption tower cannot be effectively utilized, the invention provides a device for concentrating desulfurization wastewater by utilizing waste heat and a low-temperature flue gas concentration device.
The device for concentrating the desulfurization wastewater by using the waste heat comprises an evaporation structure, a water storage tank, a circulating pump, a water replenishing pipe and a water collecting pipe;
the evaporation structures are multiple and are arranged in a layered mode along the vertical direction; each layer of evaporation structure is fixed at a smoke inlet of the desulfurization absorption tower;
the top of the water storage tank is provided with an input port, and the lower part of one side of the water storage tank is provided with an output port;
the input end of the circulating pump is communicated with the output port of the water storage tank, and the output end of the circulating pump is communicated with the water replenishing pipe;
the water replenishing pipe is vertically arranged and communicated with the at least one layer of evaporation structure;
the water collecting pipe is vertically arranged and is respectively communicated with the at least one layer of evaporation structure and the input port of the water storage tank.
In one specific embodiment, each layer of evaporation structure comprises an evaporation plate, a water distributor and a recovery tank;
the evaporating plate is obliquely arranged;
the water distributor is arranged above the higher end of the evaporation plate and can distribute water to the plate surface of the evaporation plate; the water distributor of at least one layer of evaporation structure is communicated with the water replenishing pipe;
the recovery tank is arranged at the lower end of the evaporation plate; the recovery tank of at least one layer of evaporation structure is communicated with the water collecting pipe.
In one embodiment, the top side of the evaporating plate is a concave side and the bottom side is a convex side.
In one embodiment, the water distributor is a long hollow structure, the axial direction of the water distributor is the same as the body width direction of the evaporation plate, the bottom end of the water distributor is fixedly connected with the higher end of the evaporation plate, and the lower part of the water distributor is provided with a water distribution hole facing the top surface of the evaporation plate.
In one embodiment, each layer of the evaporation structure further comprises a smoke barrier;
one side of the smoke blocking bar is fixedly connected with the upper part of one side of the water distributor provided with the water distribution holes, and the opposite side is a free side and extends towards the top surface of the evaporation plate to shield the water distribution holes.
In one embodiment, the recycling groove is a long hollow structure with an open top end, the axial direction is the same as the body width direction of the evaporation plate, and the top end of one side wall is fixedly connected with the lower end of the evaporation plate.
In one embodiment, the evaporation plate of the at least one layer of evaporation structure comprises a first flow guide section;
the first drainage section is obliquely arranged, the cross section of the first drainage section is of a linear structure, a water distributor of an evaporation structure is arranged above the higher end of the first drainage section, and a recovery tank of the evaporation structure is arranged at the lower end of the first drainage section.
In one embodiment, the evaporation plate of the at least one layer of evaporation structure further comprises a second flow guide section;
the second drainage section is integrally arranged below the first drainage section and is also obliquely arranged, the cross section of the second drainage section is of an arc-shaped structure, the higher end of the second drainage section is fixedly connected with the lower end of the first drainage section, and a recovery tank is arranged below the lower end of the second drainage section.
In one embodiment, the evaporation plate of the at least one layer of evaporation structure further comprises a third flow guide section;
the third drainage section is integrally arranged below the second drainage section and is also obliquely arranged, the cross section of the third drainage section is of a linear structure, the higher end of the third drainage section is fixedly connected with the lower end of the second drainage section, and the lower end of the third drainage section is provided with a recovery tank.
The low-temperature flue gas concentration device based on the same conception comprises a smoke inlet and a device for concentrating desulfurization wastewater by using waste heat, which is provided by any one of the embodiments;
the smoke inlet is of a trapezoidal hollow structure, the two opposite sides of the smoke inlet are provided with side plates, and the middle part of the smoke inlet is provided with a partition plate;
the plane of the evaporation plate of each layer of evaporation structure is parallel to the axial direction of the smoke inlet; the lower end of the evaporation plate of at least one layer of evaporation structure is fixedly connected with the side plate on one side, and the higher end of the evaporation plate of at least one layer of evaporation structure is fixedly connected with the side plate on the other side.
The invention has the beneficial effects that: the device for concentrating the desulfurization wastewater by using the waste heat is provided with the water storage tank, and the desulfurization wastewater in the water storage tank flows into the water replenishing pipe under the driving of the circulating pump and is then distributed to at least one layer of evaporation structure. The desulfurization wastewater concentrated on at least one layer of evaporation structure can flow back to the water storage tank through the water collecting pipe. Flue gas in the inlet smoke that is about to get into desulfurization absorption tower has certain heat, can flow through every layer of evaporation structure's top side and bottom side, carries out the heat transfer with sending out structural desulfurization waste water for partial moisture evaporation in the last desulfurization waste water of evaporation structure, the desulfurization waste water that does not evaporate flows to and retrieves in the storage water tank. On the whole, carry out reasonable utilization to the heat energy that will flow into the interior low temperature flue gas of entering of desulfurization absorption tower in the mouth, improved the heat utilization efficiency of low temperature flue gas, comparatively energy-concerving and environment-protective has improved the protection to the environment.
Drawings
FIG. 1 is a schematic structural view of an embodiment of an apparatus for concentrating desulfurization waste water using waste heat according to the present invention;
FIG. 2 is a schematic configuration diagram of another embodiment of an apparatus for concentrating desulfurization waste water using waste heat according to the present invention;
FIG. 3 is a schematic structural view showing an embodiment of a layer 1 evaporation structure in the apparatus for concentrating desulfurization waste water using waste heat shown in FIG. 2;
FIG. 4 is an enlarged view of a portion of area A of FIG. 3;
FIG. 5 is a partial enlarged view of area B of FIG. 3;
FIG. 6 is a schematic structural view showing an embodiment of a layer 2 evaporation structure in the apparatus for concentrating desulfurization waste water using waste heat shown in FIG. 2;
FIG. 7 is a schematic structural view showing an embodiment of a layer 3 evaporation structure in the apparatus for concentrating desulfurization waste water using waste heat shown in FIG. 2;
FIG. 8 is a schematic structural view showing an embodiment of a layer 4 evaporation structure in the apparatus for concentrating desulfurization waste water using waste heat shown in FIG. 2;
FIG. 9 is a schematic structural view showing an embodiment of a layer 5 evaporation structure in the apparatus for concentrating desulfurization waste water using waste heat shown in FIG. 2;
FIG. 10 is a schematic structural view showing an embodiment of a layer 6 evaporation structure in the apparatus for concentrating desulfurization waste water using waste heat shown in FIG. 2;
FIG. 11 is a schematic structural view showing an embodiment of a layer 7 evaporation structure in the apparatus for concentrating desulfurization waste water using waste heat shown in FIG. 2;
FIG. 12 is a schematic structural view showing an embodiment of the layer 8 evaporation structure of the apparatus for concentrating desulfurization waste water using waste heat shown in FIG. 2;
FIG. 13 is a schematic structural view showing an embodiment of a layer 9 evaporation structure in the apparatus for concentrating desulfurization waste water using waste heat shown in FIG. 2;
FIG. 14 is a schematic structural view showing an embodiment of a layer 10 evaporation structure in the apparatus for concentrating desulfurization waste water using waste heat shown in FIG. 2;
FIG. 15 is a schematic structural view showing an embodiment of the layer 11 evaporation structure of the apparatus for concentrating desulfurization waste water using waste heat shown in FIG. 2;
fig. 16 is a schematic structural view of an embodiment of a 12 th evaporation structure in the apparatus for concentrating desulfurization waste water using waste heat shown in fig. 2.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "top," "bottom," "inner," "outer," "axial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention or for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to 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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "secured," "engaged," "hinged," and the like are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 and 16, the present invention also provides an apparatus for concentrating desulfurization waste water using waste heat, which includes an evaporation structure 100, a water storage tank 300 having a square structure, a circulation pump 400, a water supplement pipe 500 and a water collection pipe 600. The evaporation structure 100 is provided in plurality and is layered in the vertical direction. Each layer of evaporation structure 100 is fixed at the smoke inlet 200 of the desulfurization absorption tower. The water storage tank 300 can store desulfurization waste water. An input port is provided at the top of the water storage tank 300, and an output port is provided at the lower part of one side. The input port is arranged at the top of the water storage tank 300, so that the energy consumption required for filling the water storage tank 300 is reduced. The output port is arranged at the lower part of one side of the water storage tank 300, so that the energy consumption required by outputting the desulfurization wastewater in the water storage tank 300 is reduced. The input end of the circulating pump 400 is communicated with the output port of the water storage tank 300, the output end is communicated with the water replenishing pipe 500, and the desulfurization wastewater in the water storage tank 300 can be input into the water replenishing pipe 500. The vertical setting of moisturizing pipe 500, with at least one deck evaporation structure 100 intercommunication, can carry desulfurization waste water to at least one deck evaporation structure 100, its cross-sectional diameter is 100 mm. The water collecting pipe 600 is vertically arranged and is respectively communicated with the at least one layer of evaporation structure 100 and the input port of the water storage tank 300, and the diameter of the cross section of the water collecting pipe is 150 mm. The desulfurization waste water on at least one layer of the evaporation structure 100 can be collected in the water collecting pipe 600 and conveyed into the water storage tank 300.
In this embodiment, the desulfurization waste water in the storage tank 300 flows into the water replenishing pipe 500 under the driving of the circulation pump 400, and then is distributed to the at least one layer of evaporation structure 100. The desulfurization waste water concentrated on the at least one layer of evaporation structure 100 can flow back to the water storage tank 300 through the water collecting pipe 600. The flue gas that is about to enter into in the smoke inlet 200 of desulfurization absorption tower has certain heat, can flow through the top side and the bottom side of every layer of evaporation structure 100, carries out the heat transfer with the desulfurization waste water on the evaporation structure 100 for partial moisture in the desulfurization waste water on the evaporation structure 100 evaporates, and the desulfurization waste water that does not evaporate flows to the storage water tank 300 in and retrieves. On the whole, the heat energy of the low-temperature flue gas about to flow into the smoke inlet 200 of the desulfurization absorption tower is reasonably utilized, the heat utilization rate of the low-temperature flue gas is improved, energy is saved, the environment is protected, and the environment is protected.
In an embodiment of the present invention, each layer of evaporation structure 100 includes an evaporation plate 110, a water distributor 120, and a recovery tank 130. Wherein the evaporation plate 110 is obliquely disposed. The water distributor 120 is disposed above the higher end of the evaporation plate 110, and is capable of distributing water to the plate surface (top surface) of the evaporation plate 110. The recovery groove 130 is provided at a lower end of the evaporation plate 110. The water distributors 120 of at least one layer of evaporation structures 100 are all communicated with the water replenishing pipe 500, and the recovery tanks 130 of at least one layer of evaporation structures 100 are communicated with the water collecting pipe 600.
In this embodiment, the evaporation plates 110 of each evaporation structure 100 are inclined to the right at an angle of 72 degrees from the vertical direction, and the right end is the higher end and the left end is the lower end. As such, the desulfurization waste water can be retained on the top side surface of the evaporation plate 110 for a long time, so that the desulfurization waste water is evaporated and concentrated. The water distributors 120 of each layer of evaporation structure 100 are communicated with the water replenishing pipe 500, and the desulfurization wastewater in the water replenishing pipe 500 can be distributed into the water distributors 120 of each layer of evaporation structure 100. Then, the desulfurization waste water flows toward the recovery tank 130 after passing through the top side of the evaporation plate 110. The water collecting pipe 600 is respectively communicated with the recovery grooves 130 of the evaporation structures 100 of the 1 st, 2 nd, 3 rd, 4 th, 5 th and 6 th layers, and the recovery grooves 130 of the evaporation structures 100 of the 7 th to 12 th layers are not communicated with the water collecting pipe 600. The desulfurization waste water in the recovery tank 130 of the evaporation structure 100 of the 1 st to 6 th layers can be collected in the water collecting pipe 600 and flow into the water storage tank 300 for recovery. The water distributor 120 is disposed above the higher end of the evaporation plate 110, and the water distributor 120 can distribute water to the top side of the evaporation plate 110, where the water distribution refers to that the desulfurization wastewater is uniformly distributed on the top side of the evaporation plate 110. The recovery groove 130 is disposed at a lower end of the evaporation plate 110. The desulfurization wastewater discharged from the water distributor 120 flows through the top surface of the evaporation plate 110 and then is collected in the recovery tank 130. The low-temperature flue gas flowing through the top side and the bottom side of the evaporation plate 110 of each layer of evaporation structure 100 and the desulfurization wastewater on the top surface of the evaporation plate 110 of the evaporation structure 100 are subjected to direct contact heat transfer, and can be subjected to indirect heat transfer through the evaporation plate 110, and partial water in the desulfurization wastewater on the top side of the evaporation plate 110 is evaporated by utilizing the heat conduction and convection heat transfer principle, and the non-evaporated desulfurization wastewater flows into the recovery tank 130 to be recovered. So, realized carrying out the purpose of rational utilization to the heat energy of the low temperature flue gas of the inlet 200 department of flue gas through the desulfurization absorption tower, improved the heat utilization efficiency of the low temperature flue gas of the inlet 200 department of flue gas of desulfurization absorption tower, need not to heat the concentrated processing operation to desulfurization waste water alone again, comparatively energy-concerving and environment-protective, improved the protection to the environment. And the desulfurization wastewater in the water storage tank 300 may flow through the top side of the evaporation plate 110 several times, completing several concentration processes on the top side of the evaporation plate 110.
In one embodiment of the present invention, the top side of the evaporation plate 110 is a concave surface, and the bottom side is a convex surface. The desulfurization waste water flows through the top side of the evaporation plate 110. Because the top side of the evaporation plate 110 is a concave surface, the effective contact area of the desulfurization wastewater and the low-temperature flue gas is increased, and the heat utilization rate of the low-temperature flue gas is improved.
In an embodiment of the present invention, the water distributor 120 is a long hollow structure, the axial direction of the water distributor is the same as the body width direction of the evaporation plate 110, the bottom end of the water distributor is fixedly connected to the upper end of the evaporation plate 110, and the lower portion of the water distributor is provided with a water distribution hole 121 facing the top surface of the evaporation plate 110. Here, it should be noted that the water distributor 120 and the recovery tank 130 are respectively located at both ends of the evaporation plate 110 in the body length direction. The axial direction of the water distributor 120 is the same as the body width direction of the evaporation plate 110, which means that the axial direction of the water distributor 120 is perpendicular to the body length direction of the evaporation plate 110. Both ends of the water distributor 120 are flush with both sides of the evaporation plate 110 in the body width direction. Desulfurized wastewater is temporarily stored in the water distributor 120. The water distribution holes 121 opened at the lower part of the water distributor 120 are in a thin strip structure, and both ends of the water distribution holes extend along the axial direction of the water distributor 120 and face the top surface of the evaporation plate 110. In this manner, the desulfurization wastewater discharged from the water distributor 120 can exist in the form of a thin film on the top side of the evaporation plate 110. Therefore, the effective contact area of the desulfurization waste water and the low-temperature flue gas is further increased, and the heat utilization rate of the low-temperature flue gas is improved. Moreover, because the top side of the evaporation plate 110 is a concave surface, the desulfurization wastewater in the form of a thin film is less influenced by the power of flowing flue gas, is not easy to be carried away by the flue gas, has a large adsorption force on the evaporation plate 110, and avoids the desulfurization wastewater from flowing into the desulfurization absorption tower. In addition, the evaporation plate 110 may be made of a material having corrosion resistance, high thermal conductivity, and high hydrophilicity. So, make evaporating plate 110's life longer, the heat conductivity is better, improves the conduction efficiency to the heat energy of low temperature flue gas, simultaneously, has increased evaporating plate 110's hydrophilicity for desulfurization waste water can be attached to on evaporating plate 110's the top side better, is difficult for being taken away by the flue gas. Water distributor 120 can be for the cross-sectional diameter for 110 supplyes 120 mm's water pipe, set up on the water pipe water distribution hole 121 can, water distribution hole 121's size is according to the water yield design, simple structure, and the water distribution effect is better. In addition, the water distributor 120 is made of corrosion-resistant materials, so that the service life is long.
In an embodiment of the present invention, each layer of evaporation structure 100 further includes a smoke blocking strip 140, one side of the smoke blocking strip 140 is fixedly connected to the upper portion of the side of the water distributor 120 having the water distribution holes 121, and the opposite side is a free side and extends toward the top surface of the evaporation plate 110 to block the water distribution holes 121. The free side of the cigarette blocking bar 140 is higher than the top surface of the corresponding position of the evaporation plate 110 by a predetermined height. Specifically, the preset height is 5-10 mm. The body width of the cigarette blocking bar 140 is 300-400 mm. In this way, the water distribution holes 121 are located in the relatively closed space enclosed by the smoke barrier 140 and the evaporation plate 110. The smoke blocking strip 140 can effectively prevent the smoke flowing through the top side of the evaporation plate 110 from rushing to the water distribution holes 121, thereby improving the water outlet effect of the water distribution holes 121 and further improving the water distribution effect of the water distributor 120. Meanwhile, the flow of the desulfurization waste water flowing out of the water distribution holes 121 to the entire top side surface of the evaporation plate 110 is not affected.
In an embodiment of the present invention, the recycling slot 130 is a long hollow structure with an open top end, the axial direction is the same as the body width direction of the evaporation plate 110, two ends of the recycling slot are flush with two sides of the evaporation plate 110 in the body width direction, and the top end of one sidewall is fixedly connected to the lower end of the evaporation plate 110. The recycling tank 130 has a simple structure, and can better collect the concentrated desulfurization wastewater flowing down from the top side surface of the evaporation plate 110, thereby facilitating the recycling and further concentration of the concentrated desulfurization wastewater. Furthermore, the recovery groove 130 is fixed to one side wall and the opposite side wall of the evaporation plate 110 and is smoothly connected to the bottom, respectively. Specifically, the depth of the recycling groove 130 is 165-170mm, the distance between the top ends of the two sidewalls is 340-350mm, and the recycling groove has a larger opening. Therefore, the concentrated desulfurization wastewater can flow into the recovery tank 130 more smoothly, and the desulfurization wastewater is prevented from splashing. Furthermore, the desulfurization waste water is not easily retained in the recovery tank 130, which is advantageous for discharging the desulfurization waste water in the recovery tank 130. In addition, the recovery tank 130 is made of corrosion-resistant metal material, such as titanium plate, 1.4529 alloy, 2205 alloy, etc., so that the service life of the recovery tank 130 is longer.
In a specific embodiment of the present invention, the number of the evaporation structures 100 is 12, and the evaporation structures are layered in the vertical direction and respectively include a 1 st layer evaporation structure 100, a 2 nd layer evaporation structure 100, a 3 rd layer evaporation structure 100, a 4 th layer evaporation structure 100, a 5 th layer evaporation structure 100, a 6 th layer evaporation structure 100, a 7 th layer evaporation structure 100, an 8 th layer evaporation structure 100, a 9 th layer evaporation structure 100, a 10 th layer evaporation structure 100, an 11 th layer evaporation structure 100, and a 12 th layer evaporation structure 100. Wherein, the evaporation plate 110 of at least one layer of evaporation structure 100 includes a first flow guiding section 111, and the first flow guiding section 111 is disposed obliquely. A water distributor is arranged above the higher end of the first drainage section 111, and a recovery tank 130 is arranged at the lower end. In some of these embodiments, the evaporation plates 110 of the 11 th and 12 th layer evaporation structures 100 include first flow-directing segments 111. First drainage section 111 has better drainage effect for desulfurization waste water can smoothly steadily flow downwards high-efficiently. In addition, the length of the first flow guiding section 111 of the evaporation plate 110 of the 12 th layer of evaporation structure 100 is smaller than the length of the second flow guiding section 112 of the evaporation plate 110 of the 11 th layer of evaporation structure 100. Here, the body length direction of the first flow directing section 111 is the same as the body length direction of the entire evaporation plate 110. The mode that 11 th and 12 th layer evaporation structure 100's evaporating plate 110 set up is the adaptation with the flue gas in the distribution condition in space of the smoke inlet 200 department of desulfurization absorption tower, has both carried out reasonable utilization to the heat energy of low temperature flue gas, has saved the material again, has reduced manufacturing cost, can also carry out structural dodging to other parts. The flow-leading sections of the layer 1 to layer 10 evaporation structures 100 include at least the first flow-leading section 111, and may not include the second flow-leading section 112 and the third flow-leading section 113.
In another embodiment of the present invention, the number of the evaporation structures 100 is 12, and the evaporation structures are layered in the vertical direction and respectively include a 1 st layer evaporation structure 100, a 2 nd layer evaporation structure 100, a 3 rd layer evaporation structure 100, a 4 th layer evaporation structure 100, a 5 th layer evaporation structure 100, a 6 th layer evaporation structure 100, a 7 th layer evaporation structure 100, an 8 th layer evaporation structure 100, a 9 th layer evaporation structure 100, a 10 th layer evaporation structure 100, an 11 th layer evaporation structure 100, and a 12 th layer evaporation structure 100. Wherein the evaporation plate 110 of the at least one layer of evaporation structure 100 comprises a first flow guide section 111 and a second flow guide section 112. First conduction section 111 and second conduction section 112 all incline to set up, and the top of second conduction section 112 is located to first conduction section 111 whole, and the cross-section is linear structure, and the top of higher end is equipped with the water-locator. The cross-section of the second flow guiding section 112 is an arc-shaped structure, the higher end of the second flow guiding section is fixedly connected with the lower end of the first flow guiding section 111, and the lower end of the second flow guiding section is provided with a recovery tank 130. In some of the embodiments, the evaporation plates 110 of the 9 th and 10 th layer evaporation structures 100 comprise a first diversion section 111 and a second diversion section 112, and the second diversion sections 112 of the evaporation plates 110 of the 9 th and 10 th layer evaporation structures 100 are both located in the middle of the flue gas inlet 200 of the desulfurization absorption tower. The top side of the second drainage section 112 is a concave surface, and the bottom side is a convex surface, so that the effective contact area of the desulfurization wastewater and the flue gas can be increased, and the heat utilization rate of the low-temperature flue gas is improved. First drainage section 111 has better drainage effect for desulfurization waste water can smoothly steadily flow downwards high-efficiently. In addition, the length of the second flow guiding section 112 of the evaporation plate 110 of the 10 th layer of evaporation structure 100 is smaller than that of the second flow guiding section 112 of the evaporation plate 110 of the 9 th layer of evaporation structure 100, and the length of the first flow guiding section 111 of the evaporation plate 110 of the 10 th layer of evaporation structure 100 is also smaller than that of the first flow guiding section 111 of the evaporation plate 110 of the 9 th layer of evaporation structure 100. Here, the length direction of the first flow directing segment 111 is the same as the length direction of the entire evaporation plate 110, and the length direction of the second flow directing segment 112 is also the same as the length direction of the entire evaporation plate 110. The mode that the evaporating plate 110 of the 9 th layer and the 10 th layer of evaporation structure 100 set up is the adaptation with the flue gas of the smoke inlet 200 department of desulfurization absorption tower in the distribution situation in space, has both carried out reasonable utilization to the heat energy of low temperature flue gas, has saved the material again, has reduced manufacturing cost, can also carry out structural dodging to other parts. The flow-leading sections of the evaporation structures 100 of the 1 st to 8 th layers, the evaporation structures 100 of the 11 th layer and the evaporation structures 100 of the 12 th layer include at least the first flow-leading section 111, and may not include the second flow-leading section 112 and the third flow-leading section 113.
In a specific embodiment of the present invention, the number of the evaporation structures 100 is 12, and the evaporation structures are layered in the vertical direction and respectively include a 1 st layer evaporation structure 100, a 2 nd layer evaporation structure 100, a 3 rd layer evaporation structure 100, a 4 th layer evaporation structure 100, a 5 th layer evaporation structure 100, a 6 th layer evaporation structure 100, a 7 th layer evaporation structure 100, an 8 th layer evaporation structure 100, a 9 th layer evaporation structure 100, a 10 th layer evaporation structure 100, an 11 th layer evaporation structure 100, and a 12 th layer evaporation structure 100. Wherein, the evaporation plate 110 of at least one layer of evaporation structure 100 includes first conduction leg 111, second conduction leg 112 and third conduction leg 113, and first conduction leg 111, second conduction leg 112 and third conduction leg 113 all incline the setting. The first flow guiding section 111 is integrally arranged above the second flow guiding section 112 and the third flow guiding section 113, the cross section of the first flow guiding section is of a linear structure, and a water distributor is arranged above the higher end of the first flow guiding section. The second flow guiding section 112 is integrally arranged above the third flow guiding section 113, the cross section of the second flow guiding section is of an arc-shaped structure, and the higher end of the second flow guiding section is fixedly connected with the lower end of the first flow guiding section 111. The section of the third flow guiding section 113 is a linear structure, the higher end of the third flow guiding section is fixedly connected with the lower end of the second flow guiding section 112, and the lower end of the third flow guiding section is provided with a recovery groove 130. In some of the embodiments, the evaporation plates 110 of the evaporation structures of the 1 st to 8 th layers 100 include a first diversion section 111, a second diversion section 112 and a third diversion section 113, and the second diversion sections 112 of the evaporation plates 110 of the evaporation structures of the 1 st to 8 th layers 100 are all located in the middle of the flue gas inlet 200 of the desulfurization absorption tower. The top side of the second drainage section 112 is a concave surface, and the bottom side is a convex surface, so that the effective contact area of the desulfurization wastewater and the flue gas can be increased, and the heat utilization rate of the low-temperature flue gas is improved. First conduction section 111 and third conduction section 113 have better drainage effect for desulfurization waste water can smoothly steadily flow downwards with high efficiency. In addition, the lengths of the third flow guiding sections 113 of the evaporation plates 110 of the evaporation structures 100 of the 1 st to 6 th layers are the same. Here, the body length direction of the third flow directing section 113 is the same as the body length direction of the entire evaporation plate 110. The length of the third flow guiding section 113 of the evaporation plate 110 of the layer 7 evaporation structure 100 is smaller than that of the third flow guiding section 113 of the evaporation plate 110 of the layer 6 evaporation structure 100, and the length of the third flow guiding section 113 of the evaporation plate 110 of the layer 8 evaporation structure 100 is smaller than that of the third flow guiding section 113 of the evaporation plate 110 of the layer 7 evaporation structure 100. The mode that evaporating plate 110 of 1 st floor to 8 th floor evaporation structure 100 set up and the flue gas of the smoke inlet 200 department of desulfurization absorption tower are the adaptation in the distribution condition in space, have both carried out reasonable utilization to the heat energy of low temperature flue gas, have saved the material again, have reduced manufacturing cost, can also carry out structural dodging to other parts. The flow-leading sections of the evaporation structures 100 of layers 9 to 12 include at least the first flow-leading section 111, and may not include the second flow-leading section 112 and the third flow-leading section 113.
In a specific embodiment of the present invention, the number of the evaporation structures 100 is 12, and the evaporation structures are layered in the vertical direction and respectively include a 1 st layer evaporation structure 100, a 2 nd layer evaporation structure 100, a 3 rd layer evaporation structure 100, a 4 th layer evaporation structure 100, a 5 th layer evaporation structure 100, a 6 th layer evaporation structure 100, a 7 th layer evaporation structure 100, an 8 th layer evaporation structure 100, a 9 th layer evaporation structure 100, a 10 th layer evaporation structure 100, an 11 th layer evaporation structure 100, and a 12 th layer evaporation structure 100. The evaporation plates 110 of the evaporation structures 100 of the 1 st to 8 th layers comprise a first diversion section 111, a second diversion section 112 and a third diversion section 113, and the second diversion sections 112 of the evaporation plates 110 of the evaporation structures 100 of the 1 st to 10 th layers are all positioned in the middle of the smoke inlet 200 of the desulfurization absorption tower. The evaporation plates 110 of the 9 th and 10 th layer evaporation structures 100 comprise a first diversion section 111 and a second diversion section 112, and the second diversion sections 112 of the evaporation plates 110 of the 9 th and 10 th layer evaporation structures 100 are both positioned in the middle of the smoke inlet 200 of the desulfurization absorption tower. The evaporation plates 110 of the 11 th and 12 th layer evaporation structures 100 include first lead sections 111. In addition, the lengths of the third flow guiding sections 113, the lengths of the second flow guiding sections 112 and the lengths of the first flow guiding sections 111 of the evaporation plates 110 of the evaporation structures 100 from the 1 st layer to the 4 th layer are the same. The third flow guiding section 113 of the evaporation plate 110 of the 5 th layer of evaporation structure 100 is the same as the third flow guiding section 113 of the evaporation plate 110 of the 4 th layer of evaporation structure 100, the length of the second flow guiding section 112 is smaller than the length of the second flow guiding section 112 of the evaporation plate 110 of the 4 th layer of evaporation structure 100, and the length of the first flow guiding section 111 is smaller than the length of the first flow guiding section 111 of the evaporation plate 110 of the 4 th layer of evaporation structure 100. Moreover, a preset distance is reserved between one end of the second flow guiding section 112 of the evaporation plate 110 of the 5 th layer evaporation structure 100, which is far away from the third flow guiding section 113, and one end of the first flow guiding section 111, which is far away from the water distributor 120, and the inclination angles of the second flow guiding section 112 of the 5 th layer evaporation structure 100 and the first flow guiding section 111 are the same. The preset distance enables the layer 5 evaporation structure 100 to avoid other structures of the smoke inlet 200 of the desulfurization absorption tower. The third flow guiding section 113 of the evaporation plate 110 of the 6 th layer of evaporation structure 100 is the same as the third flow guiding section 113 of the evaporation plate 110 of the 5 th layer of evaporation structure 100 in length, the second flow guiding section 112 is the same as the second flow guiding section 112 of the evaporation plate 110 of the 5 th layer of evaporation structure 100 in length, the first flow guiding section 111 is the same as the first flow guiding section 111 of the evaporation plate 110 of the 5 th layer of evaporation structure 100 in length, and one end of the second flow guiding section 112 of the evaporation plate 110 of the 6 th layer of evaporation structure 100, which is far away from the third flow guiding section 113, is fixedly connected with one end of the first flow guiding section 111, which is far away from the water distributor 120. The length of the third flow guiding section 113 of the evaporation plate 110 of the 7 th layer of evaporation structure 100 is smaller than that of the third flow guiding section 113 of the evaporation plate 110 of the 6 th layer of evaporation structure 100, the length of the second flow guiding section 112 is the same as that of the second flow guiding section 112 of the evaporation plate 110 of the 6 th layer of evaporation structure 100, and the length of the first flow guiding section 111 is the same as that of the first flow guiding section 111 of the evaporation plate 110 of the 6 th layer of evaporation structure 100. The length of the third flow guiding section 113 of the evaporation plate 110 of the 8 th layer of evaporation structure 100 is smaller than that of the third flow guiding section 113 of the evaporation plate 110 of the 7 th layer of evaporation structure 100, the length of the second flow guiding section 112 is the same as that of the second flow guiding section 112 of the evaporation plate 110 of the 7 th layer of evaporation structure 100, and the length of the first flow guiding section 111 is the same as that of the first flow guiding section 111 of the evaporation plate 110 of the 7 th layer of evaporation structure 100. The length of the second flow guiding section 112 of the evaporation plate 110 of the 9 th layer of evaporation structure 100 is smaller than that of the second flow guiding section 112 of the evaporation plate 110 of the 8 th layer of evaporation structure 100, and the length of the first flow guiding section 111 is smaller than that of the first flow guiding section 111 of the evaporation plate 110 of the 8 th layer of evaporation structure 100. The length of the second flow guiding section 112 of the evaporation plate 110 of the 10 th layer of evaporation structure 100 is smaller than that of the second flow guiding section 112 of the evaporation plate 110 of the 9 th layer of evaporation structure 100, and the length of the first flow guiding section 111 is also smaller than that of the first flow guiding section 111 of the evaporation plate 110 of the 9 th layer of evaporation structure 100. The length of the first flow guiding section 111 of the evaporation plate 110 of the 11 th layer of evaporation structure 100 is smaller than the length of the second flow guiding section 112 of the evaporation plate 110 of the 10 th layer of evaporation structure 100. The length of the first flow guiding section 111 of the evaporation plate 110 of the 12 th layer of evaporation structure 100 is smaller than the length of the second flow guiding section 112 of the evaporation plate 110 of the 11 th layer of evaporation structure 100. On the whole, the arrangement mode of the evaporation plate 110 of the evaporation structure 100 from the 1 st layer to the 12 th layer is matched with the distribution condition of the flue gas at the flue gas inlet 200 of the desulfurization absorption tower in the space, so that the heat energy of the low-temperature flue gas is reasonably utilized, the material is saved, the manufacturing cost is reduced, and other components can be structurally avoided.
The invention also provides a low-temperature flue gas concentration device with a device for concentrating desulfurization waste water by using waste heat, which comprises a smoke inlet 200 and the device for concentrating desulfurization waste water by using waste heat provided by any one of the above embodiments. The smoke inlet is of a trapezoidal hollow structure, the two opposite sides of the smoke inlet are provided with side plates, and the middle of the smoke inlet is provided with a partition plate. The plane of the evaporation plate of each layer of evaporation structure is parallel to the axial direction of the smoke inlet, the lower end of the evaporation plate of at least one layer of evaporation structure is fixedly connected with the side plate on one side, and the higher end of the evaporation plate of at least one layer of evaporation structure is fixedly connected with the side plate on the other side. Specifically, the common side of the lower ends of the third flow guiding sections 113 of the evaporation plates 110 of the evaporation structures 100 of the 1 st to 6 th layers can be fixedly connected with a side plate of the smoke inlet 200 of the desulfurization absorption tower, and the common side of the upper ends of the first flow guiding sections 111 of the evaporation plates 110 of the evaporation structures 100 of the 1 st to 5 th layers and the first flow guiding sections 111 of the evaporation plates 110 of the evaporation structures 100 of the 7 th to 12 th layers can be fixedly connected with the other side plate of the smoke inlet 200 of the desulfurization absorption tower. The first flow guiding section 111 of the evaporation plate 110 of the 6 th layer of evaporation structure 100 is not fixedly connected with the other side wall of the smoke inlet 200 of the desulfurization absorption tower, and the projection of the higher end of the first flow guiding section 111 of the evaporation plate 110 of the 5 th layer of evaporation structure 100 in the vertical direction coincides with that of the lower end of the first flow guiding section 111 of the evaporation plate 110 of the layer to structurally avoid the partition plate of the smoke inlet 200. Before entering the smoke inlet 200 of the desulfurization tower, the low-temperature flue gas flows through the top side and the bottom side of the evaporation plate 110 of each layer of evaporation structure 100 in the body width direction of the evaporation plate 110 of each layer of evaporation structure 100, so that the desulfurization wastewater flowing through the top side of the evaporation plate 110 of each layer of evaporation structure 100 can reasonably utilize the heat energy of the low-temperature flue gas.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," "one specific embodiment," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of the term does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the scope of the present invention by equivalent replacement or change according to the technical solution and the inventive concept of the present invention within the scope of the present disclosure.
Claims (10)
1. An apparatus for concentrating desulfurization waste water using waste heat, comprising:
the device comprises an evaporation structure, a water storage tank, a circulating pump, a water replenishing pipe and a water collecting pipe;
the evaporation structures are multiple and are arranged in a layered mode in the vertical direction; each layer of evaporation structure is fixed at a smoke inlet of the desulfurization absorption tower;
the top of the water storage tank is provided with an input port, and the lower part of one side of the water storage tank is provided with an output port;
the input end of the circulating pump is communicated with the output port of the water storage tank, and the output end of the circulating pump is communicated with the water replenishing pipe;
the water replenishing pipe is vertically arranged and is communicated with at least one layer of evaporation structure;
the water collecting pipe is vertically arranged and is respectively communicated with the evaporation structure and the input port of the water storage tank.
2. The apparatus for concentrating desulfurization waste water using waste heat according to claim 1, wherein each layer of the evaporation structure comprises an evaporation plate, a water distributor and a recovery tank;
the evaporation plate is obliquely arranged;
the water distributor is arranged above the higher end of the evaporation plate and can distribute water to the plate surface of the evaporation plate; the water distributor of at least one layer of evaporation structure is communicated with the water replenishing pipe;
the recovery tank is arranged at the lower end of the evaporation plate; the recovery groove of at least one layer of the evaporation structure is communicated with the water collecting pipe.
3. The apparatus for concentrating desulfurization waste water using waste heat according to claim 2, wherein the top side surface of the evaporation plate is a concave surface, and the bottom side surface is a convex surface.
4. The apparatus as claimed in claim 2, wherein the water distributor has a hollow structure with a long axis direction same as the width direction of the evaporation plate, a bottom end fixed to the upper end of the evaporation plate, and a lower end having a water distribution hole facing the top surface of the evaporation plate.
5. The apparatus for concentrating desulfurization waste water using waste heat according to claim 4, wherein each layer of the evaporation structure further comprises a smoke barrier;
one side of the smoke blocking bar is fixedly connected with the upper part of one side of the water distributor provided with the water distribution holes, and the opposite side is a free side and extends towards the top surface of the evaporation plate to shield the water distribution holes.
6. The apparatus for concentrating desulfurization waste water using waste heat according to claim 2, wherein the recovery tank has a hollow elongated structure with an open top end, and has a top end fixedly connected to a lower end of the evaporation plate in the same axial direction as the width direction of the evaporation plate.
7. The apparatus for concentrating desulfurization waste water using waste heat according to any one of claims 2 to 6, wherein the evaporation plate of at least one layer of the evaporation structure comprises a first guide section;
the first drainage section is obliquely arranged, the cross section of the first drainage section is of a linear structure, the water distributor of the evaporation structure is arranged above the higher end of the first drainage section, and the recovery tank of the evaporation structure is arranged at the lower end of the first drainage section.
8. The apparatus for concentrating desulfurization waste water using waste heat according to claim 7, wherein the evaporation plate of at least one layer of the evaporation structure further comprises a second guide section;
the second drainage section is integrally arranged below the first drainage section and is also obliquely arranged, the cross section of the second drainage section is of an arc-shaped structure, the higher end of the second drainage section is fixedly connected with the lower end of the first drainage section, and the recovery tank is arranged below the lower end of the second drainage section.
9. The apparatus for concentrating desulfurization waste water using waste heat according to claim 8, wherein the evaporation plate of at least one layer of the evaporation structure further comprises a third induction section;
the third drainage section is integrally arranged below the second drainage section and is also obliquely arranged, the cross section of the third drainage section is of a linear structure, the higher end of the third drainage section is fixedly connected with the lower end of the second drainage section, and the lower end of the third drainage section is provided with the recovery tank.
10. A low-temperature flue gas concentration device, which is characterized by comprising a smoke inlet and the device for concentrating desulfurization waste water by using waste heat, as claimed in any one of claims 2 to 9;
the smoke inlet is of a trapezoidal hollow structure, the two opposite sides of the smoke inlet are provided with side plates, and the middle part of the smoke inlet is provided with a partition plate;
the plane of the evaporation plate of each layer of evaporation structure is parallel to the axial direction of the smoke inlet; the lower end of the evaporation plate of at least one layer of the evaporation structure is fixedly connected with the side plate on one side, and the higher end of the evaporation plate of at least one layer of the evaporation structure is fixedly connected with the side plate on the other side.
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| CN213803337U (en) * | 2020-11-03 | 2021-07-27 | 山东国舜建设集团有限公司 | Multilayer plate type low-salt wastewater evaporation concentration device with built-in flue |
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| TW201130742A (en) * | 2010-03-05 | 2011-09-16 | Bin-Juine Huang | Diffusion type multi-effect distillation system |
| CN103827041A (en) * | 2010-09-17 | 2014-05-28 | 李种华 | Apparatus for evaporating and condensing wastewater and system for evaporating and condensing wastewater |
| CN206279034U (en) * | 2016-11-16 | 2017-06-27 | 四川苏源环保工程有限公司 | Airflow on surface forced evaporation concentration-type waste water from power plant device |
| CN213803337U (en) * | 2020-11-03 | 2021-07-27 | 山东国舜建设集团有限公司 | Multilayer plate type low-salt wastewater evaporation concentration device with built-in flue |
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