Industrial flue gas desulfurization post-treatment device

Abstract

The utility model relates to the technical field of flue gas treatment, and discloses an industrial flue gas desulfurization post-treatment device which comprises a treatment tower, a bubble generation assembly, a circulating pump, an ultrasonic vibration rod and an overflow assembly, the bubble generation assembly is arranged at the lower end of the inner side of the treatment tower, and the circulating pump is arranged on the side face of the treatment tower and communicates with an external heat exchanger; the ultrasonic vibration rod is arranged on the treatment tower and located on the outer side of the bubble generation assembly, and the overflow assembly comprises a variable-diameter cover arranged in the treatment tower; through cooperative use of the treatment tower, the bubble generation assembly, the circulating pump and the ultrasonic vibration rod, flue gas subjected to desulfurization treatment is converted into micro-bubbles through the bubble generator, the micro-bubbles make contact with cooling water in the water storage area, meanwhile, the ultrasonic vibration rod is used for generating a cavitation effect, the micro-bubbles are further broken, the updating rate of a gas-liquid interface is increased, and the gas-liquid separation efficiency is improved. Therefore, the efficiency of removing the particulate matters and the water content in the flue gas is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flue gas treatment, in particular to an industrial flue gas desulfurization post-treatment device. BACKGROUND

[0002] In the industrial production process, a large amount of sulfur-containing flue gas after desulfurization treatment still contains a certain amount of particulate matter and moisture. If it is directly discharged into the atmosphere, it will cause serious pollution to the environment, such as forming acid rain, smog and other bad weather, and harming the ecological balance and human health.

[0003] For the removal of fine particulate matter and moisture content in flue gas, the traditional method often relies on simple water washing or filtration, and the gas-liquid contact is not sufficient, which cannot effectively capture and remove the fine particles, resulting in that the particulate emission concentration is difficult to meet the strict environmental protection standard. At the same time, the removal effect of water is not ideal, so that the humidity of flue gas is high, and visible smoke plume is easy to form in the subsequent emission process, causing visual pollution and potential environmental problems. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the problem of insufficient gas-liquid contact, difficult to remove fine particulate matter and moisture in the traditional flue gas treatment method, the present application provides an industrial flue gas desulfurization post-treatment device.

[0005] The industrial flue gas desulfurization post-treatment device provided by the present application adopts the following technical scheme:

[0006] An industrial flue gas desulfurization post-treatment device, comprising a treatment tower, a bubble generating assembly, a circulating pump, an ultrasonic vibration rod and an overflow assembly;

[0007] The bubble generating assembly is arranged at the inner lower end of the treatment tower, and is used for generating bubbles to mix the flue gas with the water in the treatment tower;

[0008] The circulating pump is arranged on the side of the treatment tower and communicates with the external heat exchanger;

[0009] The ultrasonic vibration rod is arranged on the treatment tower and located outside the bubble generating assembly, and is used for generating ultrasonic waves to break the micro-bubbles and increase the renewal rate of the gas-liquid interface;

[0010] The overflow assembly comprises a variable-diameter cover arranged in the treatment tower, and a spraying assembly is arranged on the upper side of the variable-diameter cover of the treatment tower, and is used for spraying treatment of the flue gas.

[0011] Preferably, the treatment tower comprises a water storage area, the side of the water storage area is provided with an air inlet, the upper side of the water storage area is provided with a spraying area, two air outlets are arranged on the spraying area, and pneumatic valves are arranged on the two air outlets.

[0012] Preferably, the bubble generating assembly comprises a gas collecting cover arranged on the air inlet, an air guide pipe arranged at the end of the gas collecting cover, and a bubble generator arranged at the end of the air guide pipe.

[0013] Preferably, the variable-diameter cover is provided with overflow pipes, and the upper surface of the overflow pipes is lower than the upper surface of the air guide channel of the variable-diameter cover.

[0014] Preferably, the spraying assembly comprises a coil pipe arranged on the treatment tower, a plurality of spraying heads arranged on the lower side of the coil pipe, and a water inlet pipe arranged on the side of the coil pipe, the end of the water inlet pipe penetrating through the treatment tower and being in communication with an external heat exchanger.

[0015] Preferably, the upper side of the spraying assembly on the treatment tower is provided with a mist capturing device, and the upper side of the mist capturing device on the treatment tower is provided with a mounting port for mounting a detection end of a flue gas detector.

[0016] In summary, the present application has the following beneficial technical effects:

[0017] 1. By cooperating the treatment tower, the bubble generating assembly, the circulating pump and the ultrasonic vibration rod, the flue gas after desulfurization treatment is converted into micro-bubbles by the bubble generator, the micro-bubbles are contacted with cooling water in the water storage area, the ultrasonic vibration rod generates cavitation effect to further break the micro-bubbles and increase the renewal rate of the gas-liquid interface, thereby improving the efficiency of removing particulate matters and water content in the flue gas; compared with the prior art, the present application has the effect of high treatment efficiency.

[0018] 2. By cooperating the pneumatic valve and the mounting port, the detection end of the flue gas detector is mounted on the mounting port to detect whether the treated flue gas meets the preset treatment standard, and the corresponding pneumatic valve is opened or closed to realize flue gas emission or secondary treatment; compared with the prior art, the present application has the advantage of good treatment effect. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a first perspective view of the application embodiment;

[0020] Figure 2 is a second perspective view of the application embodiment;

[0021] Figure 3 is a third perspective view of the application embodiment.

[0022] Explanation of reference signs: 1, treatment tower; 101, water storage area; 102, gas inlet; 103, spraying area; 2, bubble generating assembly; 201, gas collecting cover; 202, gas guide pipe; 203, bubble generator; 3, circulating pump; 4, ultrasonic vibration rod; 5, overflow assembly; 501, variable diameter cover; 502, overflow pipe; 6, spraying assembly; 601, coil pipe; 602, spraying head; 603, water inlet pipe; 7, mist catching device; 8, pneumatic valve; 9, mounting port. DETAILED DESCRIPTION

[0023] The following will be described in detail in combination with the accompanying drawings. Figures 1-3 The present application is further described in detail.

[0024] The embodiment of the present application discloses an industrial flue gas desulfurization post-treatment device. Figures 1-3 An industrial flue gas desulfurization post-treatment device mainly comprises a treatment tower 1, a bubble generating assembly 2, a circulating pump 3, an ultrasonic vibration rod 4, an overflow assembly 5 and a spraying assembly 6, etc., realizes efficient purification treatment of flue gas after desulfurization, makes it reach environmental protection emission standard, has good automatic control and stable operation at the same time, and effectively reduces pollution of flue gas to the environment.

[0025] Referring to Figures 1-3 The treatment tower 1 as the core container of the whole post-treatment device is composed of a water storage area 101 and a spraying area 103. The water storage area 101 is used for storing circulating water, and the side gas inlet 102 provides an access channel for flue gas after desulfurization, so that the flue gas can smoothly enter the treatment tower 1 to start the subsequent purification process. The spraying area 103 on the upper side is the working area of the spraying assembly 6, which provides space for further treatment of the flue gas. The pneumatic valves 8 arranged on the two gas outlets are used in cooperation with the mounting ports 9, and the flue gas detector mounted on the mounting ports 9 is used to monitor various indexes of the treated flue gas in real time, such as particulate matter concentration, water content, pH value, etc., and transmit the detection data to the control system. The control system judges whether the flue gas reaches the qualified emission condition according to the preset emission standard and process requirement, so as to accurately control the opening and closing of the pneumatic valves 8, realize the standard emission or secondary treatment of the flue gas, greatly improve the treatment effect and automation degree of the whole device, and ensure that the treated flue gas can stably meet the environmental protection requirements and reduce the pollution to the atmospheric environment.

[0026] Referring to Figures 1-3, Bubble generating assembly 2 is the key part to promote gas-liquid mixing. After the flue gas after desulfurization is transported to the gas inlet 102 of the treatment tower 1 through the pipeline, it enters the gas collecting hood 201, which plays a role in collecting and preliminarily gathering the flue gas, so that the flue gas can be more concentratedly guided to the bubble generator 203 by the gas guide pipe 202. The bubble generator 203 adopts special structure design and gas dispersion technology, which can uniformly disperse the flue gas into tiny bubbles and release them into the water in the water storage area 101. The formation of such tiny bubbles greatly increases the contact area of flue gas and water, improves the gas-liquid mass transfer efficiency, and makes the particulate matter and soluble impurities in the flue gas more easily interact with water, thereby laying a good foundation for the subsequent purification process and effectively improving the removal capacity of the entire device for pollutants in the flue gas.

[0027] With reference to Figures 1-3 , The circulating pump 3 is installed on the side of the treatment tower 1 and communicates with the external heat exchanger, which plays a crucial role. After the circulating pump 3 is started, the water in the water storage area 101 is pumped out, heat exchanged through the external heat exchanger, and then sent back to the coil 601 in the treatment tower 1 after the water temperature is lowered. The lower temperature water is conducive to improving the solubility of the gas in the water, promoting the dissolution and precipitation of particulate matter and soluble impurities in the flue gas, and further enhancing the purification effect of the flue gas. At the same time, the stable operation of the circulating pump 3 ensures the smooth circulation of water in the treatment tower 1, maintains the stability and continuity of the entire treatment process, and ensures that the device can continuously and efficiently treat the flue gas, improving the efficiency and reliability of waste gas treatment in industrial production.

[0028] With reference to Figures 1-3 , The ultrasonic vibration rod 4 is arranged on the treatment tower 1 and located outside the bubble generating assembly 2. When the high-frequency ultrasonic waves generated by the ultrasonic vibration rod 4 propagate in the water, periodic negative and positive pressure changes occur. When the negative pressure reaches a certain level, tiny cavitation bubbles are formed in the water. These cavitation bubbles collapse rapidly under the action of positive pressure, generating strong shock waves and micro-jets, which impact and break the micro-bubbles generated by the bubble generator 203, further refining them and greatly increasing the area and update rate of the gas-liquid interface. In this intense gas-liquid mixing and mass transfer process, the particulate matter in the flue gas is captured by the water, and the soluble substances are dissolved in the water, thereby achieving preliminary purification of the flue gas, effectively reducing the particulate matter content and water content in the flue gas, and further improving the treatment efficiency and purification effect of the device, providing better treatment conditions for the subsequent treatment steps.

[0029] With reference to Figures 1-3The variable-diameter cover 501 of the overflow assembly 5 is located in the treatment tower 1, and its special structure design can condense water in the flue gas once, so that part of the water is discharged through the overflow pipe 502 and flows back to the bottom of the treatment tower 1. The upper surface of the overflow pipe 502 is lower than the upper surface of the gas guide hole of the variable-diameter cover 501. This design ensures that the water is discharged without affecting the normal upward channel of the flue gas, ensuring the continuity and stability of the treatment process. Through the action of the overflow assembly 5, the humidity of the flue gas is further reduced, the burden of the subsequent treatment process is reduced, the drying treatment capacity of the entire device for flue gas is improved, which helps to improve the purification quality and emission stability of the flue gas.

[0030] Referring to Figures 1-3 The spray assembly 6 includes a coil pipe 601 arranged on the treatment tower 1 and a plurality of spray heads 602 on the lower side, and a water inlet pipe 603 on the side. The water heated by the external heat exchanger is sent into the coil pipe 601 through the water inlet pipe 603, and the water is uniformly distributed in the coil pipe 601 and sprayed from the spray heads 602 to form a fine water curtain and fully contact with the flue gas. The spray water can not only further wash the residual impurities in the flue gas, but also remove the acidic substances in the flue gas through neutralization reaction, further improving the purification quality of the flue gas. The reasonable design and efficient operation of the spray assembly 6 make the flue gas after preliminary treatment can be further purified, ensuring that the treated flue gas can meet higher environmental protection standards, effectively reducing the emission of harmful substances in the flue gas, and protecting the atmospheric environment.

[0031] The implementation principle of the industrial flue gas desulfurization post-treatment device according to the embodiment of the present application is as follows:

[0032] The desulfurized flue gas is transported through a pipeline to the gas inlet 102 of the treatment tower 1, enters the gas collecting cover 201, and is guided by the gas guide pipe 202 to the bubble generator 203. The bubble generator 203 adopts a special structure design and gas dispersion technology to uniformly disperse the flue gas into small bubbles and release them into the water in the water storage area 101. At this time, the circulating pump 3 is started to pump the water in the water storage area 101 out, heat exchange through the external heat exchanger, and then sent back to the coil pipe 601 after reducing the water temperature. The water at a lower temperature is beneficial to improve the solubility of the gas in the water, promote the dissolution and precipitation of particulate matter and soluble impurities in the flue gas.

[0033] Meanwhile, the ultrasonic vibration rod 4 starts to work and generates high-frequency ultrasonic waves. When the ultrasonic waves propagate in water, periodic negative and positive pressure changes are generated, and when the negative pressure reaches a certain level, micro cavitation bubbles are formed in the water. These cavitation bubbles collapse rapidly under the action of positive pressure, generating strong shock waves and micro jets, which impact and break the micro bubbles generated by the bubble breaker 203, further refining them and greatly increasing the area and update rate of the gas-liquid interface. In this intense gas-liquid mixing and mass transfer process, the particulate matter in the flue gas is captured by the water, and the soluble substances are dissolved in the water, thereby achieving preliminary purification of the flue gas and effectively reducing the particulate matter content and water content in the flue gas.

[0034] The preliminarily treated flue gas passes through the variable-diameter cover 501 upwards, and due to the special structural design of the variable-diameter cover 501, the water in the flue gas is condensed once, and the sprayed water flows out through the overflow pipe 502 and returns to the bottom of the treatment tower 1. Subsequently, the flue gas enters the spraying area 103 and is subjected to the spraying action from the spraying assembly 6. The external heat exchanger heats the water and sends it into the coil pipe 601 through the water inlet pipe 603, and the water is uniformly distributed in the coil pipe 601 and sprayed out from the spray head 602 to form a fine water curtain that fully contacts with the flue gas. The sprayed water not only can further wash the residual impurities in the flue gas, but also can remove acidic substances in the flue gas through neutralization reaction, further improving the purification quality of the flue gas.

[0035] At the top of the treatment tower 1, the mist catcher 7 performs demisting operation on the flue gas after spraying treatment, intercepts and removes the micro liquid droplets therein, and prevents the formation of visible smoke plume during the discharge of the flue gas. The flue gas detector installed in the mounting port 9 monitors the various indicators of the treated flue gas in real time, such as particulate matter concentration, water content, pH value, etc., and transmits the detection data to the control system. The control system judges whether the flue gas meets the qualified discharge conditions according to the preset discharge standards and process requirements. If the flue gas indicators meet the requirements, the control system opens the pneumatic valve 8 on the gas outlet connected to the atmosphere, allowing the flue gas to be discharged into the atmosphere; if the flue gas does not meet the discharge standards, the control system closes the pneumatic valve 8 on the gas outlet connected to the atmosphere, opens the pneumatic valve 8 connected to the gas inlet 102, and issues an instruction to guide the flue gas to the secondary treatment equipment or adjust the operating parameters of the device for further purification treatment, to ensure that the finally discharged flue gas meets the environmental protection requirements.

[0036] Finally, it should be pointed out that in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the internal communication of two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0037] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0038] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An industrial flue gas desulfurization post-treatment device, characterized by: It comprises a processing tower (1), a bubble generating assembly (2), a circulating pump (3), an ultrasonic vibrating rod (4) and an overflow assembly (5). The bubble generating assembly (2) is arranged at the inner lower end of the processing tower (1) and is used for generating bubbles to mix the flue gas with water in the processing tower (1). The circulating pump (3) is arranged at the side of the processing tower (1) and is communicated with an external heat exchanger. The ultrasonic vibrating rod (4) is arranged on the processing tower (1) and is located outside the bubble generating assembly (2) and is used for generating ultrasonic waves to break micro-bubbles and increase the renewal rate of the gas-liquid interface. The overflow assembly (5) comprises a variable-diameter cover (501) arranged in the processing tower (1), and a spraying assembly (6) arranged on the upper side of the variable-diameter cover (501) of the processing tower (1) and used for spraying treatment of the flue gas.

2. A post treatment device for industrial flue gas desulfurization according to claim 1, characterized in that: The processing tower (1) comprises a water storage area (101), the side of the water storage area (101) is provided with an air inlet (102), the upper side of the water storage area (101) is provided with a spraying area (103), and two air outlets are arranged on the spraying area (103) and are each provided with a pneumatic valve (8).

3. An industrial flue gas desulphurization post-treatment device according to claim 2, characterized in that: The bubble generating assembly (2) comprises a gas collecting cover (201) arranged on the air inlet (102), the end of the gas collecting cover (201) is provided with a gas guide pipe (202), and the end of the gas guide pipe (202) is provided with a bubble generator (203).

4. The device for post-treatment of flue gas desulfurization according to claim 1, characterized in that: The variable-diameter cover (501) is provided with a plurality of overflow pipes (502), and the upper surface of the overflow pipe (502) is lower than the upper surface of the gas guide channel of the variable-diameter cover (501).

5. The device for post-treatment of flue gas desulfurization according to claim 1, characterized in that: The spraying assembly (6) comprises a coil pipe (601) arranged on the processing tower (1), a plurality of spraying heads (602) arranged on the lower side of the coil pipe (601), a water inlet pipe (603) arranged on the side of the coil pipe (601), and the end of the water inlet pipe (603) penetrating through the processing tower (1) and being communicated with the external heat exchanger.

6. A post treatment device for industrial flue gas desulfurization according to claim 1, characterized in that: The upper side of the spraying assembly (6) on the processing tower (1) is provided with a mist capturing device (7), and the upper side of the mist capturing device (7) on the processing tower (1) is provided with a mounting port (9) for mounting a detection end of a flue gas detector.

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