Advanced treatment system and method for sulfur dioxide in sulfuric acid tail gas

Abstract

The invention relates to the technical field of sulfur dioxide deep treatment, in particular to a sulfuric acid tail gas sulfur dioxide deep treatment system and method.The system comprises a conditioning tower body, a desulfurizing tower body and a spraying support and further comprises a regulation and control assembly; the regulation and control assembly comprises a side through frame, a steam communication frame, a control valve, a detection component and a flow regulation component; the side communicating frame is communicated with the conditioning tower body through openings formed in the two sides, the steam communicating frame is provided with two branch channels and is connected with the spraying support and the side communicating frame through the two branch channels respectively, and the two control valves are installed on the branch channels, connected with the side communicating frame and the spraying support, of the steam communicating frame respectively. The sulfur dioxide humidity and concentration of corresponding monitoring equipment can be detected through arranged components, then automatic cleaning, maintenance and proper isolation can be carried out, the monitoring equipment is prevented from being in an environment with sulfur dioxide waste gas for a long time, the service life of the whole monitoring element is guaranteed, and the corresponding maintenance cost and operation cost are further reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of sulfur dioxide deep treatment, and in particular to a system and method for deep treatment of sulfur dioxide in sulfuric acid tail gas. Background Art

[0002] Sulfur dioxide in sulfuric acid tail gas is one of the main sources of air pollution. It is very harmful to human health and the ecological environment. Sulfur dioxide undergoes a series of chemical reactions in the atmosphere and easily forms acid rain, which damages the ecological environment. Therefore, a system specially designed to reduce and control sulfur dioxide emissions in tail gas during sulfuric acid production is usually required;

[0003] The sulfuric acid tail gas sulfur dioxide deep treatment system is mainly based on chemical and physical principles. It converts sulfur dioxide in the tail gas into harmless or low-harmful substances through a series of treatment steps, which mainly include humidity conditioning treatment and desulfurization treatment. First, the sulfuric acid tail gas generated in the sulfuric acid production process is sent to the conditioning tower. The relative humidity of the sulfuric acid tail gas is adjusted to an appropriate range by adding water vapor or spraying water, usually not more than 20%, to meet the needs of subsequent desulfurization treatment. Then, the sulfuric acid tail gas after humidity conditioning treatment is sent to the desulfurization tower to flow through the catalyst bed. Under the catalytic oxidation action of the catalyst, the sulfur dioxide, oxygen and water in the sulfuric acid tail gas are converted into sulfuric acid. The desulfurization operation temperature is usually not less than 50°C. The obtained sulfuric acid solution can be returned to the sulfuric acid production system or directly used as a product.

[0004] When the existing sulfuric acid tail gas sulfur dioxide deep treatment system is being processed, a corresponding monitoring system is usually set up to monitor various parameter indicators in the designated area. For example, when adjusting the relative humidity, it is necessary to monitor the humidity of the gas and the sulfur dioxide concentration in the gas. At the same time, after the gas is desulfurized, it is still necessary to monitor the sulfur dioxide concentration in the gas to ensure the stability of the entire desulfurization treatment system. Since the discharged sulfur dioxide gas is corrosive to a certain extent, and the equipment for concentration detection is mostly directly installed inside the equipment, the detection equipment will be corroded or even damaged due to long-term direct contact with the sulfur dioxide gas, which greatly reduces the service life of the entire monitoring system, thereby increasing the maintenance cost and operation cost of the entire system. Summary of the invention

[0005] The object of the present invention is to provide a system and method for deep treatment of sulfur dioxide in sulfuric acid tail gas, which can automatically clean, maintain and properly isolate the corresponding monitoring equipment after detecting the humidity and concentration of sulfur dioxide through the provided components, so as to avoid the monitoring equipment being in an environment with sulfur dioxide exhaust gas for a long time, ensure the service life of the entire monitoring element, and thus reduce the corresponding maintenance cost and operating cost.

[0006] To achieve the above-mentioned object, the present invention provides a sulfuric acid tail gas sulfur dioxide deep treatment system and method, comprising a conditioning tower body, a desulfurization tower body and a spray bracket, wherein the desulfurization tower body is connected to the conditioning tower body, the spray bracket is installed on the top of the conditioning tower body, and also includes a regulating component;

[0007] The regulating assembly includes a side-through frame, a steam communication frame, a control valve, a detection component and a flow regulating component;

[0008] The side through frame is connected with the tempering tower body through openings provided on both sides, and is installed on one side of the tempering tower body. The steam connecting frame is provided with two branch channels, which are respectively connected with the spray bracket and the side through frame through the two branch channels. The two control valves are respectively installed on the branch channels connecting the steam connecting frame with the side through frame and the spray bracket. The detection component is connected with the side through frame for detecting the composition of the gas inside the tempering tower body. The two groups of flow regulating components are respectively installed at the two openings connecting the side through frame and the tempering tower body, so as to control the connection relationship between the side through frame and the tempering tower body.

[0009] Wherein, the detection component includes a detection instrument and an air guiding mechanism. The detection instrument is installed on the side frame and is used to detect the gas composition inside the side frame; the air guiding mechanism is installed on the side frame and is used to guide the gas to flow.

[0010] Wherein, the flow regulating component includes a throttling slide and a screw driving mechanism, the throttling slide is slidably mounted on the side frame; the screw driving mechanism is mounted on the side frame and is used to drive the throttling slide to move.

[0011] Among them, the regulating component also includes a blocking block, a plug guide rod, a lifting spring, a fine-pore tube, a driving component and a delayed driving component, the blocking block is slidably installed at the bottom of the side frame; the plug guide rod is fixedly connected to the blocking block and is slidably installed at the bottom of the side frame; the two sides of the lifting spring are respectively connected to the blocking block and the side frame; the fine-pore tube is connected to the plug guide rod and is installed at the bottom of the side frame; the driving component is connected to the tempering tower body to complete the coordinated driving of the blocking block; the delayed driving component is connected to the throttling slide to provide a power source for the driving component.

[0012] Among them, the driving component includes an inclined platform guide frame, a sliding bracket and a matching component, the inclined platform guide frame is fixedly installed on the tempering tower body; the sliding bracket is slidably installed on the inclined platform guide frame; the matching component is connected to the sliding bracket for matching with the blocking block.

[0013] Wherein, the time-delay driving component comprises a connecting bracket, a piston rod and an air cylinder, wherein the connecting bracket is fixedly mounted on the throttling slide; the piston rod is fixedly mounted on the connecting bracket; the air cylinder is connected to the piston rod and fixedly mounted on the sliding bracket.

[0014] Among them, the matching parts include a movable locking block, an extrusion spring, an inclined bracket and a buckle frame, the movable locking block is slidably installed on the top of the sliding bracket; the two sides of the extrusion spring are respectively connected to the movable locking block and the sliding bracket; the inclined bracket is fixedly installed on the bottom of the movable locking block; the buckle frame is fixedly installed on the movable locking block.

[0015] The present invention provides a system and method for deep treatment of sulfur dioxide in sulfuric acid tail gas. The generated sulfur dioxide tail gas is introduced into the tempering tower body, and then an appropriate amount of water vapor is introduced through the steam connecting frame in cooperation with the spray bracket and the corresponding control valve to complete the humidity adjustment of the sulfur dioxide tail gas. During the humidity adjustment of the sulfur dioxide tail gas, the detection component arranged on the side through frame can perform real-time detection of the adjusted sulfur dioxide tail gas. After the humidity adjustment is completed, the connection between the side through frame and the tempering tower body is cut off by the flow adjustment component. After the side through frame and the tempering tower body are cut off from the connection, the detection component will no longer be corroded by the exhaust gas. At the same time, the sulfur dioxide tail gas after the humidity adjustment treatment can also be introduced into the desulfurization tower body to complete the subsequent desulfurization treatment, thereby completing the deep treatment of the sulfur dioxide tail gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0017] Figure 1 It is a structural schematic diagram of the sulfur dioxide deep treatment system of sulfuric acid tail gas of the present invention.

[0018] Figure 2 It is a schematic diagram of the installation structure of the side through frame of the present invention.

[0019] Figure 3 It is a schematic diagram of the installation structure of the blocking block of the present invention.

[0020] Figure 4 The present invention Figure 3 Enlarged view of point A.

[0021] Figure 5 It is a schematic diagram of the installation structure of the connecting bracket of the present invention.

[0022] Figure 6 The present invention Figure 5 Enlarged view of point B.

[0023] Figure 7 It is a schematic structural diagram of a side through frame of the present invention when it is cut apart.

[0024] Figure 8 It is a schematic diagram of the structure inside the air guide mechanism of the present invention.

[0025] Fig. 9 The present invention is a flow chart of the method for deep treatment of sulfur dioxide in sulfuric acid tail gas.

[0026] In the figure: 101-tempering tower body, 102-desulfurization tower body, 103-spray bracket, 104-side through bracket, 105-steam connecting bracket, 106-control valve, 107-detection instrument, 108-air guide mechanism, 109-throttling slide plate, 110-screw drive mechanism, 201-blocking block, 202-plug guide rod, 203-lifting spring, 204-fine-pore cylinder, 301-inclined platform guide frame, 302-sliding bracket, 303-movable locking block, 304-extrusion spring, 305-inclined bracket, 306-buckle bracket, 401-connecting bracket, 402-piston rod, 403-air cylinder. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of the present invention, it should be understood that “plurality” means two or more than two, unless otherwise clearly and specifically defined.

[0029] See also Figures 1 to 8 The present invention provides a sulfuric acid tail gas sulfur dioxide deep treatment system and method: comprising a tempering tower body 101, a desulfurization tower body 102, a spray bracket 103 and a regulating component, the regulating component comprising a side through frame 104, a steam connecting frame 105, a control valve 106, a detection component and a flow regulating component, the detection component comprising a detection instrument 107 and an air guide mechanism 108, the flow regulating component comprising a throttling slide 109 and a screw drive mechanism 110, the above-mentioned scheme solves the problem that the discharged sulfur dioxide gas has a certain corrosiveness, and most of the equipment for concentration detection is directly arranged inside the equipment, so the detection equipment will be corroded or even damaged due to long-term direct contact with the sulfur dioxide gas, which greatly reduces the service life of the entire monitoring system, thereby increasing the maintenance cost and operation cost of the entire system.

[0030] Furthermore, the desulfurization tower body 102 is connected to the tempering tower body 101, the spray bracket 103 is installed on the top of the tempering tower body 101, the side frame 104 is connected to the tempering tower body 101 through openings provided on both sides, and is installed on one side of the tempering tower body 101, the steam connecting frame 105 is provided with two branch channels, which are respectively connected to the spray bracket 103 and the side frame 104 through the two branch channels, and the two control valves 106 are respectively installed on the branch channels connecting the steam connecting frame 105 with the side frame 104 and the spray bracket 103, the detection component is connected to the side frame 104, and is used to detect the composition of the gas inside the tempering tower body 101, and the two groups of the flow regulating components are respectively installed at the two openings where the side frame 104 is connected to the tempering tower body 101, so as to control the connection relationship between the side frame 104 and the tempering tower body 101.

[0031] Specifically, the tempering tower body 101 is connected to the desulfurization tower body 102 through corresponding connecting pipes, and the tempering tower body 101 is connected to the exhaust gas input mechanism through corresponding connecting pipes. Corresponding electric control valves are provided on the exhaust gas inlet and outlet pipes on both sides of the tempering tower body 101 to control the exhaust gas inlet and outlet. At the same time, a corresponding pressure plate is also provided inside the tempering tower body 101, and the pressure plate is driven by a cylinder installed at the bottom of the tempering tower body 101. In this way, the gas storage space at the top of the tempering tower body 101 can be changed by moving the internal pressure plate up and down, thereby facilitating the rapid introduction and discharge of exhaust gas. When exhaust gas is discharged, it is only necessary to One side of the waste gas introduction pipeline is closed by the corresponding electric control valve, and then the pressure plate is driven to move up, so that the treated gas can be quickly squeezed into the desulfurization tower body 102. When the waste gas is introduced, it is only necessary to move the pressure plate downward to enlarge the gas storage space above the tempering tower body 101, thereby generating negative pressure, so that the gas can quickly enter the tempering tower body 101. It should be noted that when the gas is introduced, since the introduced waste gas has not been treated, the connection channel connecting the tempering tower body 101 and the desulfurization tower body 102 will be intercepted and closed by the corresponding electric control valve, so as to facilitate the generation of negative pressure inside the tempering tower body 101 and the introduction of waste gas;

[0032] The side through frame 104 is arranged on the side of the tempering tower body 101, and the side through frame 104 is connected with the tempering tower body 101 through two openings. At the same time, the side through frame 104 and the spray bracket 103 installed on the top of the tempering tower body 101 are connected with the steam generating equipment through the steam connecting frame 105, so as to complete the steam transportation. The steam connecting frame 105 is divided into a main pipeline and two branch channels. The main pipeline is connected with the steam outlet of the steam generating equipment, and the two branch channels are respectively used to connect the side through frame 104 and the spray bracket 103. At the same time, the two branch channels are provided with corresponding control valves 106 for controlling the conduction direction of the steam connecting frame 105. By introducing steam into the spray bracket 103, the sulfur dioxide tail gas inside the tempering tower body 101 can be humidified, and by introducing steam into the side through frame 104, the corresponding detection element for gas component detection can be cleaned, thereby completing the automatic maintenance and cleaning of the corresponding detection element.

[0033] Furthermore, the detection instrument 107 is installed on the side frame 104 to detect the gas composition inside the side frame 104; the air guide mechanism 108 is installed on the side frame 104 to guide the gas to flow.

[0034] Furthermore, the throttling slide 109 is slidably mounted on the side frame 104; the screw driving mechanism 110 is mounted on the side frame 104 to drive the throttling slide 109 to move.

[0035] When the present embodiment is in use, the detection instrument 107 is arranged on the side frame 104, the detection probe of the detection instrument 107 is located inside the side frame 104, the air guide mechanism 108 is installed on the side frame 104, the driving source of the air guide mechanism 108 is arranged outside the side frame 104, the air guide mechanism 108 is mainly composed of an outer shell, a fan blade shaft, a gear transmission structure and a motor, the middle and lower part of the outer shell of the air guide mechanism 108 is embedded in the side frame 104, the fan blade shaft of the air guide mechanism 108 is installed in the middle and lower part of the outer shell, the motor of the air guide mechanism 108 is arranged at the upper end of the outer shell, and the corresponding motor is installed on the outer layer of the side frame 104, and the motor of the air guide mechanism 108 drives the corresponding gear transmission mechanism to control the fan blades arranged in the middle and lower part of the outer shell. The shaft is driven, and the rotation of the fan shaft drives the air flow inside the side frame 104 to flow. The wind guide mechanism 108 with an external power source can guide the internal air flow to flow while avoiding direct contact between the driving element and the internal gas, thereby completing the protection of the corresponding driving element. Moreover, when the side frame 104 and the interior of the quenching and tempering tower body 101 are in a connected state, the wind guide mechanism 108 can accelerate the mixing of the internal air flow, and at the same time, the actual parameters of the internal air flow can be more accurately detected through the flowing air flow. When the detection parameters of the detection instrument 107 are stable within a specific range, it proves that the internal air flow has been mixed. At the same time, the sulfur dioxide content and humidity of the internal air flow can be judged through the detected numerical range, so as to facilitate better subsequent processing.

[0036] The two openings connecting the side frame 104 and the quenching and tempering tower body 101 are provided with the corresponding throttling slide 109 and the screw driving mechanism 110. The screw driving mechanism 110 is mainly composed of a corresponding screw and a motor. The motor drives the screw to rotate, and then the corresponding screw drives the corresponding plate to move. In this way, the screw driving mechanism 110 drives the corresponding throttling slide 109 to move, so that the connection of the openings on both sides of the side frame 104 can be regulated.

[0037] When the exhaust gas is normally tested and humidified after being introduced, the throttling slides 109 on both sides are in an upward state, that is, both sides of the side frame 104 are connected to the tempering tower body 101. When humidification is performed, since the air guide mechanism 108 guides the airflow to flow, the airflow will enter from an opening on one side of the side frame 104 and then be discharged from an opening on the other side of the side frame 104. When the humidification is completed, the opening at the air inlet end of the side frame 104 can be blocked and closed by the corresponding throttling slide 109, and at the same time, the connection relationship between the steam connecting frame 105 and the spray bracket 103 can be controlled by the corresponding control valve. 106 is cut off so that steam can only be introduced from the side frame 104. After that, the detection instrument 107 detects that the sulfur dioxide concentration in the gas inside the side frame 104 is reduced to a preset range due to the flushing of steam. The throttling slide 109 on the other side will also move downward through the screw driving mechanism 110, thereby blocking the openings on both sides of the side frame 104. In this way, the sulfur dioxide gas inside the tempering tower body 101 cannot enter the side frame 104, so that when the sulfur dioxide gas is subsequently discharged and re-introduced, it can be cleaned by the filled water vapor and the air guide mechanism 108.

[0038] Preferably, the regulating component provided by the present invention also includes a blocking block 201, a plug guide rod 202, a lifting spring 203, a fine-pore cylinder 204, a driving component and a delayed drive component, the driving component includes a ramp guide frame 301, a sliding bracket 302 and a matching component, the delayed drive component includes a connecting bracket 401, a piston rod 402 and an air cylinder 403, and the matching components include a movable locking block 303, an extrusion spring 304, a slope bracket 305 and a buckle frame 306.

[0039] Furthermore, the blocking block 201 is slidably installed at the bottom of the side frame 104; the plug guide rod 202 is fixedly connected to the blocking block 201 and slidably installed at the bottom of the side frame 104; the two sides of the lifting spring 203 are respectively connected to the blocking block 201 and the side frame 104; the fine-pore cylinder 204 is connected to the plug guide rod 202 and installed at the bottom of the side frame 104; the driving component is connected to the tempering tower body 101, and is used to complete the coordinated driving of the blocking block 201; the delayed driving component is connected to the throttling slide 109, and is used to provide a power source for the driving component.

[0040] When the present embodiment is in use, the blocking block 201 is arranged on the lead-out frame body opened at the bottom of the side through frame 104, the plug guide rod 202 is fixed to the bottom of the blocking block 201, the plug guide rod 202 is connected to the fine-pore cylinder 204 arranged at the bottom of the lead-out frame body of the side through frame 104, the piston plate arranged at the bottom of the plug guide rod 202 matches the aperture inside the fine-pore cylinder 204, the fine-pore cylinder 204 is provided with a plurality of fine holes at the bottom, and the lifting spring 203 is installed between the bottom of the blocking block 201 and the inner side wall of the bottom of the lead-out frame body of the side through frame 104 Under normal circumstances, the lifting spring 203 will drive the blocking block 201 and the plug guide rod 202 to move upward by applying pressure, so that the blocking block 201 blocks the opening at the bottom of the side frame 104 to ensure the overall sealing performance of the side frame 104. However, after the communication between the side frame 104 and the tempering tower body 101 is completely cut off, the blocking block 201 will move downward under the action of the driving member and the extending driving member, so that the bottom of the side frame 104 can be opened to discharge excess water vapor, and it is also convenient for The detection instrument 107 is blown dry by the air guide mechanism 108, and when the blocking block 201 is completely moved down, the blocking block 201 will be moved up again by the lifting spring 203. In order to prevent the moisture inside the side frame 104 from being completely discharged due to the blocking block 201 resetting too quickly, the plug guide rod 202 provided can be used to cooperate with the fine-pore tube 204 to slow down the upward reset speed of the lifting spring 203, because when the blocking block 201 is completely moved down, the plug guide rod 202 will also move down together, thereby pressing the fine-pore tube The gas at the bottom of 204 is completely squeezed out, and when the blocking block 201 moves upward, the gas needs to enter the fine-pored tube 204, so as to fill the storage area formed at the bottom of the fine-pored tube 204 after the plug guide rod 202 moves upward. Since a plurality of fine holes are arranged at the bottom of the fine-pored tube 204, the gas filling efficiency will be greatly limited, thereby increasing the reset time of the lifting spring 203, so that the moisture inside the side frame 104 can be discharged through the air guide mechanism 108, and at the same time, the detection probe of the detection instrument 107 can be dried.

[0041] Furthermore, the inclined platform guide frame 301 is fixedly mounted on the tempering tower body 101 ; the sliding bracket 302 is slidably mounted on the inclined platform guide frame 301 ; and the matching component is connected to the sliding bracket 302 for matching with the blocking block 201 .

[0042] Furthermore, the connecting bracket 401 is fixedly mounted on the throttling slide 109 ; the piston rod 402 is fixedly mounted on the connecting bracket 401 ; the air cylinder 403 is connected to the piston rod 402 , and is fixedly mounted on the sliding bracket 302 .

[0043] Furthermore, the movable locking block 303 is slidably installed on the top of the sliding bracket 302; the two sides of the extrusion spring 304 are respectively connected to the movable locking block 303 and the sliding bracket 302; the inclined bracket 305 is fixedly installed on the bottom of the movable locking block 303; the buckle frame 306 is fixedly installed on the movable locking block 303.

[0044] When the present embodiment is in use, the ramp guide frame 301 is composed of a clamping guide frame and an outer inclined boss, the sliding bracket 302 cooperates with the clamping guide frame of the ramp guide frame 301, the sliding bracket 302 is slidably provided with the movable locking block 303 on the top, the movable locking block 303 cooperates with the transverse cylindrical boss provided on the top of the sliding bracket 302 through the circular hole boss provided at the bottom, and a circular hole boss is installed between the side wall of the circular hole boss at the bottom of the movable locking block 303 and the inner side wall of the transverse cylindrical boss on the top of the sliding bracket 302. The extrusion spring 304 and the top surface of the end of the movable locking block 303 are provided with a corresponding arc surface, and the bottom side of the blocking block 201 is also provided with a corresponding toggle boss, and the bottom surface of the toggle boss is provided with an arc surface. At the same time, the bottom of the movable locking block 303 is also provided with the inclined bracket 305 and the buckle bracket 306, and the inclined bracket 305 can cooperate with the inclined boss of the inclined platform guide frame 301, and the buckle bracket 306 can limit the toggle boss at the bottom of the blocking block 201 in the corresponding direction;

[0045] The piston rod 402 is connected to the throttling slide 109 provided on the gas outlet opening of the side frame 104 through the provided connecting bracket 401. The piston rod 402 cooperates with the gas cylinder 403 installed on the sliding bracket 302. When the throttling slide 109 is driven by the corresponding screw driving mechanism 110, the piston rod 402 will move up and down with the throttling slide 109 due to the driving of the connecting bracket 401, thereby realizing the corresponding driving of the sliding bracket 302. When the throttling slide 109 equipped with the connecting bracket 401 moves up to open the corresponding opening of the side frame 104, the piston rod The locking cam 303 is engaged with the locking cam 301 and the locking cam 302 is engaged with the locking cam 301. The locking cam 303 is engaged with the locking cam 301 and the locking cam 302 is engaged with the locking cam 301.

[0046] When the throttling slide 109 moves downward to block the corresponding opening of the side through frame 104, the corresponding connecting bracket 401 will drive the piston rod 402 to move downward, and the downward movement of the piston rod 402 will quickly compress the inner bottom area of ​​the gas cylinder 403, so that the air pressure in the bottom area of ​​the gas cylinder 403 increases, and then the gas cylinder 403 will drive the sliding bracket 302 to move downward under the action of the bottom air pressure, and then the moving locking block 303 provided in cooperation with the sliding bracket 302 can drive the blocking block 201 to move downward. When the movable locking block 303 moves down to a certain position, the inclined bracket 305 provided at the bottom of the movable locking block 303 will cooperate with the inclined boss on the side of the inclined platform guide frame 301, so that the movable locking block 303 slides sideways under the cooperation of the inclined bracket 305 and the inclined boss on the side of the inclined platform guide frame 301, so that the limit of the blocking block 201 can be released, so that the blocking block 201 can be reset under the action of the corresponding structure, avoiding the subsequent upward movement of the throttling slide 109 to move the side frame 104 is reconnected with the quenching and tempering tower body 101, and the piston rod 402 and the gas cylinder 403 are used to drive the sliding bracket 302, so that delayed driving can be achieved. That is, when the throttling slide 109 is quickly moved down and closed, the blocking block 201 will not open the bottom opening of the side through frame 104 during the closing process of the throttling slide 109, so as to prevent the exhaust gas inside the quenching and tempering tower body 101 from leaking out from the bottom opening of the side through frame 104. At the same time, it should be noted that when the throttling slide 109 is set When the throttling slide 109 of the gas outlet opening of the side frame 104 is moved down to block, the steam inside the side frame 104 is still continuously introduced, and the throttling slide 109 is only moved down to block when the sulfur dioxide composition of the gas outlet from the side frame 104 is monitored by the detection instrument 107 to meet the set standard. Therefore, when the bottom opening of the side frame 104 is subsequently opened, no non-compliant gas will be discharged, only excess steam will be discharged and the detection probe of the detection instrument 107 will be blown dry in cooperation with the air guide mechanism 108.

[0047] See also Fig. 9 A method for deep treatment of sulfur dioxide from sulfuric acid tail gas, using the system for deep treatment of sulfur dioxide from sulfuric acid tail gas, comprises the following steps:

[0048] S1: introducing the generated sulfur dioxide tail gas into the conditioning tower body 101, and then introducing a proper amount of water vapor through the steam connecting frame 105, the spraying frame 103 and the corresponding control valve 106 to complete the humidity control of the sulfur dioxide tail gas;

[0049] S2: During the humidity adjustment process of the sulfur dioxide tail gas, the detection component arranged on the side frame 104 can detect the adjusted sulfur dioxide tail gas in real time, and after the humidity adjustment is completed, the connection between the side frame 104 and the conditioning tower body 101 is cut off by the flow adjustment component;

[0050] S3: After the side through frame 104 is disconnected from the tempering tower body 101, the detection component will no longer be corroded by the exhaust gas. At the same time, the sulfur dioxide tail gas after the humidity conditioning treatment can also be introduced into the desulfurization tower body 102 to complete the subsequent desulfurization treatment, thereby completing the deep treatment of the sulfur dioxide tail gas.

[0051] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A sulfuric acid tail gas sulfur dioxide deep treatment system, comprising a conditioning tower body, a desulfurization tower body and a spray bracket, wherein the desulfurization tower body is connected to the conditioning tower body, and the spray bracket is installed on the top of the conditioning tower body, characterized in that: Also included are regulatory components; The regulating assembly includes a side-through frame, a steam communication frame, a control valve, a detection component and a flow regulating component; The side through frame is connected with the tempering tower body through openings provided on both sides, and is installed on one side of the tempering tower body. The steam connecting frame is provided with two branch channels, which are respectively connected with the spray bracket and the side through frame through the two branch channels. The two control valves are respectively installed on the branch channels connecting the steam connecting frame with the side through frame and the spray bracket. The detection component is connected with the side through frame for detecting the composition of the gas inside the tempering tower body. The two groups of flow regulating components are respectively installed at the two openings connecting the side through frame and the tempering tower body, so as to control the connection relationship between the side through frame and the tempering tower body.

2. The sulfuric acid tail gas sulfur dioxide deep treatment system according to claim 1, characterized in that: The detection component includes a detection instrument and an air guide mechanism. The detection instrument is installed on the side frame and is used to detect the gas composition inside the side frame; the air guide mechanism is installed on the side frame and is used to guide the gas to flow.

3. The sulfuric acid tail gas sulfur dioxide deep treatment system according to claim 1, characterized in that: The flow regulating component comprises a throttling slide and a screw driving mechanism. The throttling slide is slidably mounted on the side frame. The screw driving mechanism is mounted on the side frame and is used to drive the throttling slide to move.

4. The sulfuric acid tail gas sulfur dioxide deep treatment system according to claim 3, characterized in that: The regulating assembly also includes a blocking block, a plug guide rod, a lifting spring, a fine-pore tube, a driving member and a time-delay driving member. The blocking block is slidably mounted on the bottom of the side frame; the plug guide rod is fixedly connected to the blocking block and slidably mounted on the bottom of the side frame; the two sides of the lifting spring are respectively connected to the blocking block and the side frame; the fine-pore tube is connected to the plug guide rod and mounted on the bottom of the side frame; The driving member is connected to the tempering tower body to complete the cooperative driving of the blocking block; the time-delay driving member is connected to the throttling slide to provide a power source for the driving member.

5. The sulfuric acid tail gas sulfur dioxide deep treatment system according to claim 4, characterized in that: The driving component includes an inclined platform guide frame, a sliding bracket and a matching component. The inclined platform guide frame is fixedly installed on the tempering tower body; the sliding bracket is slidably installed on the inclined platform guide frame; the matching component is connected to the sliding bracket for matching with the blocking block.

6. The sulfuric acid tail gas sulfur dioxide deep treatment system according to claim 5, characterized in that: The time-delay driving component comprises a connecting bracket, a piston rod and an air cylinder. The connecting bracket is fixedly mounted on the throttling slide; the piston rod is fixedly mounted on the connecting bracket; the air cylinder is connected to the piston rod and fixedly mounted on the sliding bracket.

7. The sulfuric acid tail gas sulfur dioxide deep treatment system according to claim 6, characterized in that: The matching parts include a movable locking block, an extrusion spring, an inclined bracket and a buckle bracket. The movable locking block is slidably installed on the top of the sliding bracket; the two sides of the extrusion spring are respectively connected to the movable locking block and the sliding bracket; the inclined bracket is fixedly installed on the bottom of the movable locking block; and the buckle bracket is fixedly installed on the movable locking block.

8. A method for deep treatment of sulfur dioxide from sulfuric acid tail gas, using the system for deep treatment of sulfur dioxide from sulfuric acid tail gas as claimed in claim 1, characterized in that: The following steps are included: The generated sulfur dioxide tail gas is introduced into the conditioning tower body, and then an appropriate amount of water vapor is introduced through the steam connecting frame, the spray bracket and the corresponding control valve to complete the humidity adjustment of the sulfur dioxide tail gas; During the humidity adjustment process of sulfur dioxide tail gas, the detection component arranged on the side through frame can detect the adjusted sulfur dioxide tail gas in real time, and after the humidity adjustment is completed, the connection between the side through frame and the conditioning tower body is cut off by the flow adjustment component; After the side through frame is disconnected from the tempering tower body, the detection component will no longer be corroded by the exhaust gas. At the same time, the sulfur dioxide tail gas after the humidity conditioning treatment can also be introduced into the desulfurization tower body to complete the subsequent desulfurization treatment, thereby completing the deep treatment of the sulfur dioxide tail gas.

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