A highly efficient purification, dehydration and deoxidation device

Abstract

The present invention relates to a high-efficiency purification, dehydration and de-whitening device, comprising: a flue gas intake device and an exhaust device, which are coaxially arranged and are a vertical tube shell structure, wherein the exhaust device is sleeved on the inner side of the flue gas intake device, and the two ends of the exhaust device extend out of the outer side of the flue gas intake device, and the lower end of the flue gas intake device is the intake end, and the intake air flows along the inside of the flue gas intake device and the outside of the exhaust device, and the bottom of the exhaust device is a low-humidity air inlet; a condensation purification component, which is located at the periphery of the flue gas intake device, and the upper end of the condensation purification component is connected to the upper end of the flue gas intake device, and the lower end of the condensation purification component is connected to the low-humidity air inlet at the lower end of the exhaust device. The condensation de-whitening of high-temperature flue gas and the high-temperature emission of low-temperature flue gas are achieved, mechanical water droplets in the flue gas are removed, and white smoke plumes are avoided when the flue gas is discharged.

Description

Technical Field

[0001] The invention belongs to the technical field of environmental protection machinery, and in particular relates to a high-efficiency purification, dehydration and de-whitening device. Background Art

[0002] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention, and should not necessarily be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art.

[0003] In the iron and steel metallurgy, coal-fired power plants and other industries, wet dust removal systems and wet desulfurization systems are widely used. These wet purification systems require a large amount of water to be sprayed into the system for cooling and dust removal. In this process, the flue gas often contains a large amount of mechanical water droplets, which will produce a large amount of white smoke plumes when discharged from the exhaust pipe. The smoke plumes carry fine particles and are discharged into the atmosphere to cause environmental pollution, which is one of the important factors in the generation of haze. At the same time, it causes a large amount of water resources. At present, the continuous improvement of national environmental protection standards requires that dust removal systems gradually achieve ultra-low emissions of particulate matter. The control of white smoke plumes in dust removal systems has gradually become an assessment indicator for environmental protection departments to meet environmental protection requirements of polluting enterprises.

[0004] At present, the dehydration method for wet flue gas in wet purification systems generally adopts dehydration by dehydrator, and commonly used ones include gravity dehydrator, wire mesh dehydrator, cyclone dehydrator, etc.; the whitening method for discharging wet flue gas generally first cools the flue gas by air cooling and then heats the flue gas. The inventor believes that the dehydration efficiency is low when using a dehydrator for dehydration, and a large amount of water vapor is still discharged into the atmosphere, causing waste of water resources and environmental pollution. The air cooling method is used to cool the flue gas and then heat it, which has low cooling efficiency, large equipment, large land area, and high energy consumption. Summary of the invention

[0005] In view of the problems existing in the above-mentioned prior art, the object of the present invention is to provide a high-efficiency purification, dehydration and dewhitening device.

[0006] In order to solve the above technical problems, the technical solution of the present invention is:

[0007] A highly efficient purification, dehydration and deoxidation device, comprising:

[0008] The smoke inlet device and the exhaust device are coaxially arranged and are a vertical tube shell structure. The exhaust device is sleeved on the inner side of the smoke inlet device, and both ends of the exhaust device extend out of the outer side of the smoke inlet device. The lower end of the smoke inlet device is the inlet end. The intake air flows along the inside of the smoke inlet device and the outside of the exhaust device. The bottom of the exhaust device is a low-humidity air inlet.

[0009] The condensation purification component is located at the periphery of the flue gas intake device. The upper end of the condensation purification component is connected to the upper end of the flue gas intake device, and the lower end of the condensation purification component is connected to the low-humidity air inlet at the lower end of the exhaust device.

[0010] In the present invention, the condensation and dewhitening of high-temperature flue gas and the high-temperature emission of low-temperature flue gas are achieved, mechanical water droplets in the flue gas are removed, and the appearance of white smoke plumes during flue gas emission is avoided.

[0011] Beneficial effects of the present invention:

[0012] (1) In the present invention, the low-temperature and low-humidity flue gas pipeline after treatment is concentrically arranged with the high-temperature and high-humidity flue gas pipeline before treatment, and the two flue gases flow in a downstream manner for heat exchange. During the flow process, the high-temperature and high-humidity flue gas is cooled to facilitate the condensation of water vapor and the low-temperature and low-humidity flue gas is heated to keep it away from the saturated state to achieve the de-whitening function. The functional sections of the device work in coordination and support each other to jointly achieve the functions of purification, dehydration and de-whitening. The entire device is compactly arranged, occupies a small area and has low operating costs.

[0013] (2) The present invention adopts a condensation purification unit to perform indirect water cooling heat exchange on the high-temperature flue gas, which can quickly and efficiently cool the high-temperature flue gas, condense and precipitate the moisture in the flue gas, and the removed dust-containing mechanical water is discharged through the lower sewage pipe for recycling. A plurality of condensation purification units are provided, and flanges are provided at the front and rear to facilitate inspection and maintenance. Supply and return water loop pipes are provided, and cooling water is indirectly heat exchanged and circulated. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0015] Figure 1 This is a structural schematic diagram of Example 1;

[0016] Figure 2 For along Figure 1 Sectional view of 1-1;

[0017] Figure 3 For along Figure 1 Sectional view of 2-2;

[0018] Figure 4 It is a plan view of the condensation purification unit;

[0019] Figure 5 This is a schematic elevation diagram of the condensation purification unit;

[0020] In the figure, 1. air inlet pipe, 2. flue gas inlet device, 3. bell mouth, 4. air distribution device, 5. condensation purification component, 51. purification component, 52. heat exchange tube flange, 53. closing plate, 54. water supply branch pipe, 55. return branch pipe, 56. drain pipe, 6. dropping device, 7. discharge port, 8. guide pipe, 9. exhaust device, 91. spiral flap, 92. guide inclined plate, 10. water supply ring pipe, 11. return ring pipe, 12. inspection manhole, 13. sewage pipe, 14. inclined partition. DETAILED DESCRIPTION

[0021] It should be noted that the following detailed descriptions are all illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0023] The present invention proposes a highly efficient purification, dehydration and deoxidation device, which mainly includes a flue gas intake device 2, an exhaust device 9 and a condensation purification component 5. Figure 1 As shown, the high-efficiency water-intake and whitening device of the present invention can be understood as a vertical structure. The flue gas enters from the flue gas intake device 2, moves upward along the channel between the inner wall of the flue gas intake device 2 and the outer wall of the exhaust device 9, and then enters the condensation purification component 5 for condensation, so that the mechanical water carried in the flue gas is removed and the moisture content in the flue gas is reduced.

[0024] The lower end of the condensation purification component 5 is connected to the exhaust device 9. The low-temperature and low-humidity flue gas after dehumidification enters the exhaust device 9 and exchanges heat with the newly entered high-temperature flue gas from the flue gas intake device 2. The temperature is increased, which keeps the flue gas away from the saturated state and achieves the purpose of white emission.

[0025] At the same time, the high-temperature flue gas newly entering the flue gas intake device 2 is cooled, so that the cooling effect of the flue gas is better.

[0026] The above describes the main structure of the present application to achieve flue gas purification and deodorization. The following describes the basic configuration structure required for flue gas purification and deodorization:

[0027] The high-efficiency purification, dehydration and deoxidation device is divided into three parts: upper, middle and lower. The middle part is the condensation purification component 5, the upper part is the gas distribution device 4, and the lower part is the material dropping device 6. First, the material dropping device 6 is explained. The material dropping device 6 realizes the collection of mechanical water after condensation and the intake of flue gas, as well as the transfer of low-temperature and low-humidity flue gas into the exhaust device.

[0028] Optionally, the high-efficiency purification, dehydration and dewhitening device also includes a blanking device 6, the top portion of the blanking device 6 is open, the open portion is sealed with the bottom of the condensation purification component 5, the lower parts of the flue gas intake device 2 and the exhaust device 9 are located in the blanking device 6, and the air inlet of the exhaust device 9 is located in the blanking device 6.

[0029] like Figure 1 As shown, the blanking device 6 can be a hollow cavity structure, the top of which is sealed with the condensation purification component 5. The flue gas condensed by the condensation purification component 5 enters the interior of the blanking device 6 through the open part, and then enters the exhaust device 9 through the air inlet of the exhaust device 9.

[0030] Optionally, an air intake pipe 1 is provided at the air intake port at the lower end of the smoke intake device 9 , one end of the air intake pipe 1 is connected to the smoke intake device 2 , and the other end is connected to the side wall of the blanking device 6 .

[0031] The air intake pipe 1 is connected to the air intake port of the smoke intake device 2, and the air intake port of the smoke intake device 2 is located higher than the low-humidity air intake port of the exhaust device 9 (such as Figure 1 As shown) or below the low-humidity air inlet of the exhaust device 9, the material coming down from the condensation purification component passes through the dropping device 6 and then enters the exhaust device 9, so that the low-humidity flue gas and the high-temperature flue gas enter the flue gas intake device 2 and the exhaust device 9 respectively, and then perform heat exchange.

[0032] Optionally, the air inlet pipe 1 is an inverted ladder-shaped structure, one side of the hypotenuse of the inverted ladder-shaped structure is connected to the smoke inlet device 2, and the bottom corner of the inverted ladder-shaped structure is located at the top.

[0033] The outlet of the air inlet pipe 1 is connected to a cavity formed by the inner wall of the smoke inlet device 2 and the outer wall of the exhaust device 9. Figure 1 and Figure 3 As shown, in an inverted trapezoidal structure, the air intake pipe 1 changes from a small opening to a large opening along the direction of the smoke flow, which plays a role in balancing the air flow and allows the smoke to evenly enter the air intake device 2.

[0034] Optionally, an inclined partition 14 is provided inside the blanking device 6, and the inclined partition 14 is located above the air inlet of the smoke intake device 2. The side of the inclined partition 14 is sealed to the inner wall of the blanking device 6, and a blanking port 7 is formed between the lower side and the blanking device.

[0035] like Figure 1 and Figure 3As shown, the inclined partition 14 is sealed with the material discharge device 6 and the flue gas intake device 2, and the mechanical water (including water and solid particles) condensed by the condensation purification component 5 and the purified flue gas flow along the inclined partition to the position of the material discharge port 7.

[0036] Optionally, a guide pipe 8 is provided inside the blanking device, the upper end of the guide pipe 8 is connected to the blanking port 7 , and the lower end is connected to the exhaust device 9 .

[0037] like Figure 1 and Figure 3 As shown, the mechanical water and the purified flue gas flowing down from the discharge port 7 enter the exhaust device through the guide pipe 8, the purified flue gas is discharged through the exhaust device 9, and the water and solid particles are discharged through the sewage pipe 13, thereby achieving flue gas purification.

[0038] Optionally, the flow guide pipe 8 is a rectangular elbow or a circular elbow, etc. The cross section of the flow guide pipe can be square or circular, etc.

[0039] Optionally, the exhaust device 9 is provided with a discharge port, which is located directly below the air inlet of the exhaust device. The discharge port utilizes gravity to discharge the mechanical water in the flue gas and the particles entrained in the mechanical water.

[0040] Optionally, a drain pipe 13 is provided inside the blanking device 6, and the drain pipe 13 is connected to the blanking port of the exhaust device. The drain pipe 13 is used to discharge mechanical water.

[0041] Optionally, a guide ramp 92 is provided at the position of the discharge port of the exhaust device, and the bottom end of the guide ramp 92 is connected to the discharge port. The guide ramp 92 is located inside the exhaust device, and the guide ramp 92 allows the mechanical water to flow down along the guide ramp.

[0042] Secondly, the air distribution device part is explained, which realizes the air distribution of the flue gas intake.

[0043] Optionally, the high-efficiency purification, dehydration and dewhitening device also includes an air distribution device 4, the bottom of which is connected to the condensation purification component 5, the bottom portion of the air distribution device 4 is open, and the open portion is sealed to the condensation purification component 5, the upper portion of the flue gas intake device 2 is located in the air distribution device 4, the flue gas is discharged from the top of the flue gas intake device 2, and the exhaust device 9 passes through the air distribution device 4.

[0044] The flue gas is discharged from the top of the flue gas inlet device 2 and enters the gas distribution device 4. Then, the flue gas passes through the open part of the gas distribution device 4 and enters the interior of the condensation purification component 5 for condensation (ie, enters the purification component).

[0045] Optionally, the upper end of the smoke inlet device 2 is an open structure, and the opening part is a trumpet-shaped structure. The trumpet-shaped structure facilitates the smoke to flow around, flow out along the circumference, and then smoothly enter the condensation purification device in the circumference. The upper air distribution device 4 is a large space cavity, and the smoke enters the cavity for balanced airflow.

[0046] Optionally, the outer wall of the exhaust device 9 is provided with spiral flaps 91, which helps to improve the heat exchange effect.

[0047] Optionally, the condensation purification component 5 includes a plurality of purification components 51 and a heat exchange component arranged in a radial circular shape. The heat exchange component and the purification component are coaxial sleeve structures, and the heat exchange component is located outside the purification component 51 .

[0048] Optionally, a sealing plate 53 is disposed around the condensation purification component 5, and a plurality of cavities are formed between the sealing plate 53 and the purification component 51, which are heat exchange components.

[0049] like Figure 4 As shown, the flue gas flows along the condensation purification component 5. During the flow, the high-temperature flue gas exchanges heat with cooling water to reduce the temperature of the flue gas, gradually separate the moisture in the flue gas, and complete efficient cooling, dehydration and purification.

[0050] Optionally, along the radial direction, the diameter of the purification component 51 increases successively. Figure 2 As shown, this can maximize the flow area of ​​the flue gas in the fan-shaped condensation purification component 5, reduce the size of the equipment, and improve the heat exchange efficiency.

[0051] Optionally, a high-efficiency purification, dehydration and dewhitening device is provided with a plurality of water supply pipes 54, return pipes 55 and drain pipes 56, and the plurality of water supply pipes 54, return pipes 55 and drain pipes 56 are respectively connected to a plurality of heat exchange components, the water supply pipes and drain pipes are connected to the lower end of the condensation purification component, and the return pipe is connected to the upper end of the condensation purification component.

[0052] Optionally, a water supply ring pipe 10 and a water return ring pipe 11 are arranged on the outside of the high-efficiency purification, dehydration and deoxidation device, and the water supply ring pipe 10 is respectively connected to a plurality of water supply branch pipes 54, and the water return ring pipe 11 is respectively connected to a plurality of water return branch pipes 55. The water supply ring pipe 10 and the water return ring pipe 11 are annular circular pipes, and a plurality of condensation purification unit water supply pipes 54 are connected to the water supply ring pipe 10, and all the water return ring pipes 11 are connected to a plurality of condensation purification unit water return branch pipes 55.

[0053] like Figure 1 , Figure 4 and Figure 5As shown, the water supply ring pipe 10 is a circular ring structure, which is arranged around the outer side of the high-efficiency purification, dehydration and deoxidation device, and the return water ring pipe 11 is a circular ring structure, which can be conveniently connected with various heat exchange components in the circular direction. The water supply branch pipe 54, the return water branch pipe 55 and the drain pipe 56 are located on the outer side of the high-efficiency purification, dehydration and deoxidation device, and a cooling medium such as water is provided by a power device such as a pump.

[0054] In the present invention, the condensation purification assembly 5, the gas distribution device 4, and the blanking device 6 are cylindrical structures or square structures. The top of the gas distribution device 4 is sealed with the exhaust device 9 to prevent gas from escaping. Flanges 52 are respectively provided between the gas distribution device 4, the blanking device 6 and the condensation purification assembly 5.

[0055] A closing plate 53 is arranged on the outside of the condensation purification component 5. The purification component is a cylindrical structure. Flanges 52 are arranged at the upper and lower ends of the purification component 51. The flange 52 is located on the outside of the closing plate 53. A water supply branch pipe 54 is connected from the lower part of the condensation purification component 5 to the closed cavity (cooling component) composed of the inner wall of the closing plate 53 and the outer wall of the purification component 51. A valve is arranged on the water supply branch pipe 54. A return branch pipe 55 is connected from the upper part of the condensation purification component 5. A drain pipe 56 is connected from the lower end of the condensation purification component 5. A valve is arranged on the drain pipe 56.

[0056] An inspection manhole 12 is provided at the lower part of the material dropping device 6 for easy inspection and maintenance.

[0057] The exhaust device 9 and the smoke inlet device 2 are respectively cylindrical structures or square structures, and are coaxially arranged with the gas distribution device 4 and the material dropping device 6.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A highly efficient purification, dehydration and deoxidation device, characterized in that: include: The smoke inlet device and the exhaust device are coaxially arranged and are a vertical tube shell structure. The exhaust device is sleeved on the inner side of the smoke inlet device, and both ends of the exhaust device extend out of the outer side of the smoke inlet device. The lower end of the smoke inlet device is the inlet end. The intake air flows along the inside of the smoke inlet device and the outside of the exhaust device. The bottom of the exhaust device is a low-humidity air inlet. The condensation purification component is located at the periphery of the flue gas intake device, the upper end of the condensation purification component is connected to the upper end of the flue gas intake device, and the lower end of the condensation purification component is connected to the low-humidity air inlet at the lower end of the exhaust device; The high-efficiency purification, dehydration and deoxidation device also includes a blanking device, the top portion of which is open, and the open portion is sealed with the bottom of the condensation purification component. The lower portions of the flue gas inlet device and the exhaust device are located in the blanking device, and the air inlet of the exhaust device is located in the blanking device. The condensation purification component comprises a plurality of purification components and heat exchange components which are arranged in a radial circle. The heat exchange component and the purification component are coaxial sleeve structures.

2. The high-efficiency purification, dehydration and deoxidation device according to claim 1 is characterized in that: An air inlet pipe is arranged at the air inlet at the lower end of the smoke inlet device, one end of the air inlet pipe is connected to the smoke inlet device, and the other end is connected to the side wall of the blanking device.

3. The high-efficiency purification, dehydration and deoxidation device according to claim 1 is characterized in that: The air inlet pipe is an inverted ladder-shaped structure, one side of the hypotenuse of the inverted ladder-shaped structure is connected to the smoke inlet device, and the bottom corner of the inverted ladder-shaped structure is located at the top.

4. The high-efficiency purification, dehydration and deoxidation device according to claim 1 is characterized in that: An inclined partition is arranged inside the blanking device, and the inclined partition is located above the air inlet of the smoke inlet device. The side of the inclined partition is sealed and connected to the inner wall of the blanking device, and a blanking port is formed between the lower side and the blanking device. Or, a guide pipe is arranged inside the blanking device, the upper end of the guide pipe is connected to the blanking port, and the lower end is connected to the exhaust device; Or, a sewage discharge pipe is arranged inside the blanking device, and the sewage discharge pipe is connected to the blanking opening of the exhaust pipe; Alternatively, a guide ramp is provided at the location of the blanking opening of the exhaust pipe, and the bottom end of the guide ramp is connected to the blanking opening.

5. The high-efficiency purification, dehydration and deoxidation device according to claim 4 is characterized in that: The flow guide pipe is a rectangular elbow or a circular elbow.

6. The high-efficiency purification, dehydration and deoxidation device according to claim 1 is characterized in that: The exhaust device is provided with a drop opening, and the drop opening is located directly below the air inlet of the exhaust device.

7. The high-efficiency purification, dehydration and deoxidation device according to claim 1 is characterized in that: The high-efficiency purification, dehydration and deoxidation device also includes an air distribution device, the bottom of the air distribution device is connected to the condensation purification component, the bottom part of the air distribution device is open, and the open part is sealed with the condensation purification component. The upper part of the flue gas intake device is located in the air distribution device, and the flue gas is discharged from the top of the flue gas intake device, and the exhaust device passes through the air distribution device.

8. The high-efficiency purification, dehydration and deoxidation device according to claim 1 is characterized in that: The upper end of the smoke inlet device is an open structure, and the opening part is a trumpet-shaped structure.

9. The high-efficiency purification, dehydration and deoxidation device according to claim 1 is characterized in that: The outer side wall of the exhaust device is provided with a spiral flap.

10. The high-efficiency purification, dehydration and deoxidation device according to claim 1 is characterized in that: The heat exchange component is located outside the purification component; Or, the high-efficiency purification, dehydration and deoxidation device is provided with a plurality of water supply pipes, return pipes and drain pipes, the plurality of water supply pipes, return pipes and drain pipes are respectively connected to a plurality of heat exchange components, the water supply pipes and drain pipes are connected to the lower end of the condensation purification component, and the return pipe is connected to the upper end of the condensation purification component; Alternatively, a water supply ring pipe and a water return ring pipe are arranged on the outside of the high-efficiency purification, dehydration and deoxidation device, the water supply ring pipe is respectively connected to a plurality of water supply branch pipes, and the water return ring pipe is respectively connected to a plurality of return branch pipes.

11. The high-efficiency purification, dehydration and deoxidation device according to claim 1 is characterized in that: Along the radial direction, the diameter of the purification component increases successively.

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