Desulfurization wastewater zero-emission flue gas evaporation system with evaporation dust removal structure

Abstract

The utility model belongs to the technical field of desulfurization wastewater zero discharge, in particular to a desulfurization wastewater zero discharge flue gas evaporation system with an evaporation dust removal structure, which comprises an evaporation tower and a gas inlet pipe, the gas inlet pipe is mounted on one side of the evaporation tower, and a water inlet pipe and an exhaust pipe are sequentially mounted on the upper side of the evaporation tower. According to the desulfurization waste water zero-discharge flue gas evaporation system with the evaporation dust removal structure, the evaporation tower evaporates desulfurization waste water, impurities are left, the driving motor is started, so that raw flue gas flows more uniformly in the evaporation tower, deposition of particulate matters is reduced, exchange between airflow and substances in the evaporation tower is promoted, and the dust removal effect is improved. Impurities left by evaporation of the desulfurization wastewater are removed into the dust remover along with a dust solid phase in the flue gas for dust removal, removal of nitrogen oxides is completed, the evaporation system solves the problem of desulfurization wastewater treatment, realizes zero discharge of the wastewater, does not generate solid wastes, and reduces the project investment cost and simplifies the treatment process of the desulfurization wastewater by adding one evaporation tower.

Description

TECHNICAL FIELD

[0001] The utility model relates to desulfurization wastewater zero emission technical field, concretely is a kind of desulfurization wastewater zero emission flue gas evaporation system with evaporation dust removal structure. BACKGROUND

[0002] Desulfurization wastewater refers to the wastewater containing pollutants generated in the process of flue gas desulfurization, usually derived from wet desulfurization system. Wet desulfurization technology removes sulfur dioxide in flue gas by spraying or reacting with absorbent, and its by-products may be dissolved or brought into wastewater. The pollutants in desulfurization wastewater usually include suspended solids, heavy metals, sulfates, fluorides, etc. If desulfurization wastewater is discharged into the environment without or improper treatment, harmful substances such as heavy metals and fluorides in wastewater may pollute water sources, harm aquatic organisms and surrounding ecosystems, affect the survival of aquatic organisms and ecological balance, and the pollutants in wastewater may penetrate or be discharged into soil, affecting soil quality and agricultural production, so it needs to be treated before discharge.

[0003] Wet desulfurization is the most widely used desulfurization process at present, but it generates a part of wastewater. Desulfurization wastewater is generally difficult to treat due to its high turbidity, high hardness, high salt content, multiple types of pollutants, and large fluctuations in water quality of different power plants. Physical treatment methods such as triple box, integration, and sedimentation flocculation are usually used for desulfurization treatment, and special treatment is required for solid waste, making the treatment of desulfurization wastewater more complicated. Therefore, we propose a desulfurization wastewater zero emission flue gas evaporation system with evaporation dust removal structure. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a desulfurization wastewater zero emission flue gas evaporation system with evaporation dust removal structure to solve the problem of large fluctuations in water quality of desulfurization wastewater of different power plants and the need for special treatment of solid waste, making the treatment of desulfurization wastewater more complicated.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a desulfurization wastewater zero emission flue gas evaporation system with evaporation dust removal structure, comprising an evaporation tower and an air inlet pipe, an air inlet pipe is installed on one side of the evaporation tower, a water inlet pipe and an air outlet pipe are installed on the upper side of the evaporation tower in sequence, the evaporation tower is connected with a dust collector through a connecting pipe, a clean gas bin and a clean flue gas outlet are installed on the dust collector in sequence, a driving motor is installed on one side of the evaporation tower, the output end of the driving motor drives synchronous gear one to rotate, synchronous belt is butt-jointed on the outside of synchronous gear one, synchronous gear two is butt-jointed on both ends of the synchronous belt respectively, and synchronous gear one and synchronous gear two are movably connected with the evaporation tower through bearings respectively.

[0006] Preferably, a toothed disc is fixed to one side of the first synchronous pulley and one side of each of the two second synchronous pulleys.

[0007] Preferably, the toothed disc and the toothed ring are connected to each other, and the toothed disc and the toothed ring are respectively movably connected to the evaporation tower through bearings.

[0008] Preferably, a connecting pad one is bonded to the outer side of the convex teeth of the convex tooth disk, and a connecting pad two is bonded to the outer side of the convex teeth of the convex tooth ring.

[0009] Preferably, the toothed ring of the first synchronous wheel is fixed to the outer side of the splitter plate, and the toothed rings of the two second synchronous wheels are connected to the first and second guide fans in sequence.

[0010] Preferably, the lower side of the guide fan is movably connected to the water mist nozzle via a bearing, and the water inlet end of the water mist nozzle is fixed to the lower end of the water inlet pipe.

[0011] Preferably, the first and second synchronous pulleys are meshed with the synchronous belt, and the first and second connecting pads are made of deformable rubber material, and the first and second connecting pads are pressed together.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This desulfurization wastewater zero-discharge flue gas evaporation system with evaporation and dust removal structure evaporates the desulfurization wastewater in the evaporation tower, and the remaining impurities are activated by starting the drive motor, making the original flue gas flow more evenly in the evaporation tower, reducing the deposition of particulate matter, and promoting the exchange of substances between the airflow and the inside of the evaporation tower. The impurities left by the evaporation of desulfurization wastewater go to the inside of the dust collector for dust removal along with the dust solid phase in the flue gas, and complete the removal of nitrogen oxides. This evaporation system solves the problem of desulfurization wastewater treatment, achieves zero discharge of wastewater, does not generate solid waste, reduces engineering investment costs by adding an evaporation tower, and simplifies the desulfurization wastewater treatment process. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the evaporation tower and dust collector of this utility model;

[0014] Figure 2 This is a three-dimensional structural diagram of the evaporation tower and water mist nozzle of this utility model;

[0015] Figure 3 This is a schematic diagram of the first and second guide fans and their connection structure of this utility model;

[0016] Figure 4 This utility model Figure 3 A magnified view of the structure at point A in the middle;

[0017] Figure 5 This utility model Figure 3 A magnified schematic diagram of the structure at point B in the middle.

[0018] Figure: 1, evaporation tower; 101, air inlet pipe; 102, water inlet pipe; 103, exhaust pipe; 2, connecting pipe; 3, dust remover; 301, clean gas bin; 302, clean flue gas outlet; 4, driving motor; 401, synchronous wheel one; 402, synchronous belt; 403, synchronous wheel two; 404, cog disc; 405, cog ring; 4051, flow divider; 406, connecting pad one; 4061, connecting pad two; 407, flow guide fan one; 408, flow guide fan two; 409, water mist sprayer. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] Please refer to Figures 1-5 The present application provides a technical solution: a desulfurization wastewater zero-emission flue gas evaporation system with an evaporation dust removal structure, comprising an evaporation tower 1 and an air inlet pipe 101, the evaporation tower 1 is installed with the air inlet pipe 101 on one side, the upper side of the evaporation tower 1 is sequentially installed with a water inlet pipe 102 and an exhaust pipe 103, the evaporation tower 1 is connected with a dust remover 3 through a connecting pipe 2, the dust remover 3 is sequentially installed with a clean gas bin 301 and a clean flue gas outlet 302, the evaporation tower 1 is installed with a driving motor 4 on one side, the output end of the driving motor 4 drives the synchronous wheel one 401 to rotate, the outer side of the synchronous wheel one 401 is butt jointed with the synchronous belt 402, the two ends of the synchronous belt 402 are respectively butt jointed with the synchronous wheel two 403, the synchronous wheel one 401 and the synchronous wheel two 403 are respectively movably connected with the evaporation tower 1 through bearings, one side of the synchronous wheel one 401 and one side of the two synchronous wheel two 403 are respectively fixed with the cog disc 404, the cog disc 404 is butt jointed with the cog ring 405, and the cog disc 404 and the cog ring 405 are respectively movably connected with the evaporation tower 1 through bearings, the outer side of the cog of the cog disc 404 is bonded with the connecting pad one 406, the outer side of the cog of the cog ring 405 is bonded with the connecting pad two 4061, the cog ring 405 of the synchronous wheel one 401 is fixed with the outer side of the flow divider 4051, the two cog rings 405 of the synchronous wheel two 403 are sequentially connected with the flow guide fan one 407 and the flow guide fan two 408, the lower side of the flow guide fan one 407 is movably connected with the water mist sprayer 409 through a bearing, and the water inlet end of the water mist sprayer 409 is fixed with the lower end of the water inlet pipe 102, the synchronous wheel one 401 and the synchronous wheel two 403 are in meshing butt joint with the synchronous belt 402, the connecting pad one 406 and the connecting pad two 4061 are made of deformable rubber material, and the connecting pad one 406 is extruded with the connecting pad two 4061.

[0021] In particular implementation, according to Figures 1-5 , the original flue gas of waste incineration or industrial kiln is discharged into the evaporation tower 1 through the gas inlet pipe 101, and the desulfurization wastewater is flowed into the water mist nozzle 409 through the water inlet pipe 102 at this time, the water mist nozzle 409 sprays the desulfurization wastewater at this time, and the flue gas heat of the original flue gas system is introduced into the evaporation tower 1, the evaporation tower 1 evaporates the desulfurization wastewater, and the impurities left behind, and the driving motor 4 is started at the same time, the output end of the driving motor 4 drives the synchronous gear one 401 to rotate, the synchronous gear one 401 and the synchronous gear two 403 are engaged with the synchronous belt 402, so that the synchronous gear one 401 can drive the two synchronous gear two 403 to rotate, the synchronous gear one 401 and the two synchronous gear two 403 drive the convex tooth disc 404 to rotate at the same time, and the connecting pad one 406 and the connecting pad two 4061 are made of deformable rubber material, and the connecting pad one 406 is extruded with the connecting pad two 4061, so that the convex tooth disc 404 can drive the convex tooth ring 405 to rotate, at this time, the three convex tooth rings 405 drive the flow divider 4051, the guide fan one 407 and the guide fan two 408 to rotate respectively, when the flow divider 4051 rotates, it can more evenly guide the airflow, so that the flow of the original flue gas in the evaporation tower 1 is more uniform, reducing the phenomenon of airflow dead zone or local flow speed too fast, thereby improving the contact efficiency of the original flue gas and the desulfurization wastewater, and at the same time, the guide fan one 407 blows the flue gas near the upper part or tower wall of the evaporation tower 1 downward, and the guide fan two 408 blows the flue gas near the lower part or tower wall upward, blowing the flue gas downward in the upper part of the evaporation tower 1 helps to break the laminar flow condition of the upper gas, producing relatively strong turbulent flow, which has a certain sweeping effect on particulate matter, reducing the deposition of particulate matter, blowing the flue gas upward in the lower part of the evaporation tower 1 can increase the airflow velocity at the bottom of the evaporation tower 1, break the laminar flow condition at the bottom of the evaporation tower 1, promote the exchange of airflow and the internal material of the evaporation tower 1, help to improve the mixing effect in the evaporation tower 1, and drive the particulate matter droplets upward, reduce the deposition of particulate matter in the lower part, avoid accumulation, at this time, the impurities left behind by the evaporation of the desulfurization wastewater go to the inside of the dust collector 3 with the dust solid phase in the flue gas, at this time, the particulate matter carried by the flue gas adheres to the surface of the filter cartridge of the dust collector 3, the dust collector 3 is periodically accumulated with dust at this time, at this time, the original flue gas can remove most of the impurity particles, the flue gas after dust removal enters the clean gas bin 301, the flue gas after dust removal reacts with the denitration catalyst inside the clean gas bin 301 to complete the removal of nitrogen oxides, the flue gas after dust removal and denitration is discharged from the clean flue gas outlet 302 and enters the subsequent section, this evaporation system solves the problem of desulfurization wastewater treatment, realizes zero discharge of wastewater, does not produce solid waste, reduces engineering investment cost by adding an evaporation tower 1, and simplifies the treatment process of desulfurization wastewater.

[0022] In summary, the original flue gas is discharged into the evaporation tower 1 through the inlet pipe 101, the desulfurization wastewater is sprayed out by the water mist sprayer 409, the desulfurization wastewater is evaporated in the evaporation tower 1, and the impurities are left, the driving motor 4 is started, the flow of the original flue gas in the evaporation tower 1 is more uniform, and at the same time, the laminar flow state of the upper gas is broken, the deposition of particulate matters is reduced, the exchange of the gas flow and the internal substances of the evaporation tower 1 is promoted, the impurities left after the evaporation of the desulfurization wastewater are removed with the dust solid phase in the dust remover 3, the flue gas after the dust removal enters the clean gas warehouse 301, the removal of the nitrogen oxides is completed, the flue gas after the dust removal and the denitration is discharged from the clean flue gas outlet 302, by adding an evaporation tower 1, the engineering investment cost is reduced, and the treatment process of the desulfurization wastewater is simplified, and the contents not described in detail in the description belong to the prior art known by the person skilled in the art.

[0023] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A desulfurization wastewater zero emission flue gas evaporation system with evaporation dust removal structure, comprising an evaporation tower (1) and an air inlet pipe (101), characterized in that: One side of the evaporation tower (1) is provided with an air inlet pipe (101), and the upper side of the evaporation tower (1) is sequentially provided with a water inlet pipe (102) and an air outlet pipe (103). The evaporation tower (1) is connected with a dust collector (3) through a connecting pipe (2). The dust collector (3) is sequentially provided with a clean gas bin (301) and a clean flue gas outlet (302). One side of the evaporation tower (1) is provided with a driving motor (4). The output end of the driving motor (4) drives a synchronous wheel one (401) to rotate. The outer side of the synchronous wheel one (401) is butt jointed with a synchronous belt (402). The two ends of the synchronous belt (402) are respectively butt jointed with synchronous wheels two (403). The synchronous wheel one (401) and the synchronous wheels two (403) are respectively movably connected with the evaporation tower (1) through bearings.

2. The zero-emission flue gas evaporation system with evaporation dust removal structure for desulfurization wastewater according to claim 1, characterized in that: One side of the synchronous wheel one (401) and one side of the two synchronous wheels two (403) are respectively fixed with a convex tooth disc (404).

3. The zero-emission flue gas evaporation system with evaporation dust removal structure for desulfurization wastewater according to claim 2, characterized in that: The convex tooth disc (404) is butt jointed with a convex tooth ring (405), and the convex tooth disc (404) and the convex tooth ring (405) are movably connected with the evaporation tower (1) through bearings.

4. The zero-emission flue gas evaporation system with evaporation dust removal structure for desulfurization wastewater according to claim 3, characterized in that: The outer side of the convex teeth of the convex tooth disc (404) is bonded with a connecting pad one (406), and the outer side of the convex teeth of the convex tooth ring (405) is bonded with a connecting pad two (4061).

5. The zero-emission flue gas evaporation system with evaporation dust removal structure for desulfurization wastewater according to claim 4, characterized in that: The convex tooth ring (405) of the synchronous wheel one (401) is fixed with the outer side of a flow dividing plate (4051), and the convex tooth rings (405) of the two synchronous wheels two (403) are sequentially connected with a flow guide fan one (407) and a flow guide fan two (408).

6. The zero-emission flue gas evaporation system with evaporation dust removal structure for desulfurization wastewater according to claim 5, characterized in that: The lower side of the flow guide fan one (407) is movably connected with a water mist sprayer (409) through a bearing, and the water inlet end of the water mist sprayer (409) is fixed with the lower end of the water inlet pipe (102).

7. The zero-emission flue gas evaporation system with desulfurized wastewater and evaporation dust removal structure according to claim 4, characterized in that: The synchronous wheel one (401) and the synchronous wheels two (403) are in meshing butt joint with the synchronous belt (402). The connecting pad one (406) and the connecting pad two (4061) are made of deformable rubber material, and the connecting pad one (406) is extruded with the connecting pad two (4061).

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