Environment-friendly chlorine tail gas treatment device for recycling chlorobenzoyl chloride residues and treatment method of environment-friendly chlorine tail gas treatment device

Abstract

The invention relates to the related technical field of tail gas treatment, in particular to an environment-friendly chlorine tail gas treatment device for recycling chlorobenzoyl chloride residues and a treatment method thereof.The environment-friendly chlorine tail gas treatment device for recycling chlorobenzoyl chloride residues comprises a support and an absorption tower arranged on the support; the first disc body, the second disc body and the third disc body are arranged in the absorption tower, so that a reaction area, a buffer area, a liquid storage area and a liquid collection area which are distributed from top to bottom are formed in the absorption tower, the second disc body is fixed in the absorption tower, and the first disc body and the third disc body are arranged in the absorption tower in a sealing and sliding manner; the first disc body can move relative to the second disc body to promote the volume change of the reaction area and the buffer area; the switching mechanism can promote the recovery pipeline to be automatically conducted, the reaction area is communicated with the liquid collection area, and the function of automatically and additionally recovering the reaction residual liquid after each round of treatment is completed is achieved.

Description

Technical Field

[0001] The invention relates to the technical field related to tail gas treatment, and in particular to an environmentally friendly chlorine tail gas treatment device for recovering chlorobenzoyl chloride residue and a treatment method thereof. Background Art

[0002] During the recovery process of chlorobenzoyl chloride, chlorine gas may be released due to incomplete reaction or the existence of side reactions. Chlorine gas is a highly toxic gas with a strong pungent odor, which is seriously harmful to the human body and the environment, so it needs to be effectively treated. Strong alkali spraying is a commonly used tail gas treatment method, which mainly uses strong alkali (such as sodium hydroxide solution) to react chemically with chlorine gas to convert it into harmless or low-harm substances.

[0003] Therefore, using a spray tower to treat chlorine tail gas is a common treatment method. Existing spray towers usually pass reactants continuously and uniformly, and the products naturally fall to the bottom of the tower and are used for spraying again, thereby achieving recycling and saving resources. However, this method of circulating the reaction residue to the bottom of the tower is likely to affect the concentration of the strong alkali solution, which may further weaken the chlorine treatment capacity of the strong alkali concentration.

[0004] In this regard, the industry will introduce a progressive treatment method to separate the strong alkali storage chamber from the reaction chamber, that is, a specific ratio of strong alkali and chlorine is introduced into the reaction chamber, and the pressure in the reaction chamber changes according to the reaction of the two. When the pressure change reaches a specific value, the valve connecting the chamber and the reaction residual liquid recovery point is automatically opened by pressure control to achieve additional recovery of the reaction residual liquid. However, the valve that switches the open and closed state according to the pressure change is prone to fluctuations at the conduction critical point, and thus its conduction time is prone to be insufficient, resulting in more residual reaction residual liquid. Moreover, it is under ideal conditions that a specific ratio of strong alkali and chlorine can react completely in the chamber. In actual implementation, the reaction efficiency cannot reach 100%. Therefore, there will be untreated chlorine in the reaction chamber, which will cause more chlorine to be present in the reaction residual liquid finally recovered, resulting in poor tail gas treatment effect. Of course, a timer may generally be set to control the conduction time of the valve. However, due to the volatility of the reaction situation in the reaction chamber, it is difficult to accurately determine the timing parameters of the timer. Summary of the invention

[0005] The object of the present invention is to provide an environmentally friendly chlorine tail gas treatment device and a treatment method for recovering chlorobenzoyl chloride residue, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: An environmentally friendly chlorine tail gas treatment device for recovering chlorobenzoyl chloride residue comprises a support and an absorption tower arranged on the support, and also comprises: The first disk, the second disk, and the third disk are sequentially arranged in the absorption tower from top to bottom, so that a reaction zone, a buffer zone, a liquid storage zone, and a liquid collection zone are formed inside the absorption tower from top to bottom. The second disk is fixed in the absorption tower, and the first disk and the third disk are sealed and slidably arranged in the absorption tower. The first disk can move relative to the second disk to cause the reaction zone and the buffer zone to change in volume. The reaction area and the liquid storage area are connected through multiple groups of atomization mechanisms, the third disk can rise in the absorption tower to pump the strong alkali in the liquid storage area into the reaction area, and the top of the absorption tower is provided with a solenoid valve for introducing chlorine; The first disk body is connected to a recovery pipeline extending into the liquid collection area. When the volume change of the buffer area reaches a preset value, a switching mechanism arranged in the buffer area is triggered to switch the closed state of the recovery pipeline to a conducting state, so that the liquid after reaction in the reaction area enters the liquid collection area.

[0007] As a further solution of the present invention: the atomizing mechanism comprises a conduit fixed to the second disk and connected to the liquid storage area, the conduit passes through the first disk and is sealed and slidably connected to the first disk, and an atomizing nozzle is installed at one end of the conduit away from the second disk, and the atomizing nozzle is located above the first disk; A first spring is also sleeved on the outer circumference of the catheter, one end of the first spring is connected to the first disk, and the other end is connected to a limiting ring fixed on the catheter.

[0008] As a further solution of the present invention: the absorption tower is provided with a plurality of power mechanisms for driving the third disk to rise and fall in the absorption tower, the power mechanisms comprising a hydraulic cylinder mounted on the support and a column fixed to the movable end of the hydraulic cylinder through a connecting plate; The column passes through the first disk body and the second disk body and is connected to the third disk body, and the column is sealed and slidably connected to the first disk body and the second disk body.

[0009] As a further solution of the present invention: the recovery pipeline includes a standpipe fixed to the first disk body, the standpipe passes through the second disk body and the third disk body and extends into the liquid collecting area, the standpipe is sealingly and slidingly connected to the second disk body and the third disk body, and a valve body is also provided on the standpipe. When the valve body is opened, the standpipe can connect the reaction area with the liquid collecting area, and the switching mechanism can switch the opening and closing state of the valve body.

[0010] As a further solution of the present invention: the switching mechanism includes a deflection structure arranged on the second disk body and an elastic release component cooperating with the deflection structure, and the elastic release component can move radially along the second disk body and perform a state switching action on the valve body.

[0011] As a further solution of the present invention: the deflection structure includes a rotating ring rotatably mounted on the second disk body, a gear fixed on the rotating ring, a second movable seat capable of moving radially along the second disk body is also slidably engaged on the second disk body, and the second movable seat is connected to a toothed plate meshing with the gear; Wherein, a sector plate cooperating with the elastic release assembly is also arranged on the rotating ring, a connecting rod is arranged between the second movable seat and the first disk body, and two ends of the connecting rod are respectively hinged to the first disk body and the tooth plate.

[0012] As a further solution of the present invention: the elastic release assembly includes a third movable seat slidably engaged on the second disk body and arranged in a "U" shape, and a follower rod slidably connected to the third movable seat, an annular protrusion is formed on the follower rod, and two sides of the annular protrusion are respectively connected to a second spring and a third spring sleeved on the outer circumference of the follower rod; The third movable seat can move radially along the second disk body, the second spring and the third spring are in contact with the third movable seat at one end away from the annular protrusion, one end of the follower rod cooperates with the fan-shaped plate, and the other end is connected to the valve body.

[0013] As a further solution of the present invention: the valve stem of the valve body is connected to a driven rod, the driven rod is provided with a through slot, a first movable seat which can move radially along the first disk body is slidably engaged with the bottom of the first disk body, the first movable seat is connected to a driving column through a connecting arm, the driving column passes through the through slot and is slidably connected to the driven rod; The first movable seat is also connected to a connecting rod, a connecting sleeve is slidably sleeved on the connecting rod, and the connecting sleeve is fixed to the follower rod.

[0014] As a further solution of the present invention: a second boss is provided at one end of the follower rod away from the connecting sleeve, a first boss is provided on the third movable seat, and a bending groove and a fan-shaped groove respectively adapted to the first boss and the second boss are provided on the fan-shaped plate, the first boss and the second boss respectively extend into the bending groove and the fan-shaped groove and are slidably connected with the fan-shaped plate.

[0015] The method for treating chlorine tail gas by using the environmentally friendly chlorine tail gas treatment device comprises the following steps: Step 1: reactants are introduced, the solenoid valve is opened, the third disk rises, chlorine gas and strong alkali enter the reactor, and the atomizing mechanism atomizes the strong alkali; Step 2: The reaction proceeds and the first disk moves until the volume change of the buffer zone reaches a preset value; Step 3: After the reaction is finished, the residual liquid is recovered, and the switching mechanism connects the recovery pipeline, and the reaction residual liquid enters the liquid collection area; Step 4: The recovery pipeline is restored to a closed state for the next round of reaction.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present application arranges a first tray, a second tray and a third tray in the absorption tower, so that the interior of the absorption tower is divided into a reaction zone, a buffer zone, a liquid storage zone and a liquid collection zone arranged from top to bottom; During operation, when the pressure in the reaction zone changes, the first disc can automatically move upward according to the pressure change, so that the capacity of the reaction zone is reduced, and the pressure automatic replenishment function is realized. It has a weakening function for the pressure difference between the reaction zone and the liquid collection zone, and avoids the problem that after the valve body is turned on, the reaction residual liquid in the reaction zone flows too fast due to excessive pressure difference, and even the chlorine gas that has not been treated in the reaction zone is recovered together, resulting in the problem of treatment omission; In addition, during the movement of the switching mechanism, after the valve body opens, in order to balance the pressure, the first spring will rebound, and the rebound process of the first spring is related to the pressure in the reaction zone. During this process, the second protrusion is in the third groove, and the valve body still remains open, which has a delay effect, thereby providing time for the removal of the reaction residue, making up for the shortcomings of using a timer to control the duration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a structural schematic diagram of an embodiment of an environmentally friendly chlorine tail gas treatment device for recovering chlorobenzoyl chloride residue.

[0018] Figure 2 The present invention is a structural schematic diagram from another angle of an embodiment of an environmentally friendly chlorine tail gas treatment device for recovering chlorobenzoyl chloride residue.

[0019] Figure 3 A schematic diagram of the internal structure of an absorption tower in one embodiment of an environmentally friendly chlorine tail gas treatment device for recovering chlorobenzoyl chloride residue.

[0020] Figure 4 A schematic structural diagram of another angle inside the absorption tower in one embodiment of an environmentally friendly chlorine tail gas treatment device for recovering chlorobenzoyl chloride residue.

[0021] Figure 5 for Figure 4A magnified view of the structure at center.

[0022] Figure 6 A schematic diagram of the distribution of the first tray, the second tray and the third tray in one embodiment of an environmentally friendly chlorine tail gas treatment device for recovering chlorobenzoyl chloride residue.

[0023] Figure 7 A schematic diagram of the distribution of multiple groups of atomization mechanisms in one embodiment of an environmentally friendly chlorine tail gas treatment device for recovering chlorobenzoyl chloride residue.

[0024] Figure 8 An exploded view of the structure of the switching mechanism in one embodiment of an environmentally friendly chlorine tail gas treatment device for recovering chlorobenzoyl chloride residue.

[0025] In the figure: 1, support; 2, absorption tower; 201, conduction port; 202, liquid inlet; 203, liquid outlet; 3, first plate; 4, second plate; 5, third plate; 6, hydraulic cylinder; 7, column; 8, connecting plate; 9, guide tube; 901, limit ring; 10, atomizing nozzle; 11, first spring; 12, vertical pipe; 13, valve body; 14, driven rod; 15, connecting rod; 16, first movable seat; 17, connecting arm; 1701, driving column; 18, second movable seat; 19, Tooth plate; 20, gear; 21, rotating ring; 22, fan-shaped plate; 2201, first groove; 2202, second groove; 2203, third groove; 2204, fourth groove; 2205, fifth groove; 2206, sixth groove; 23, third movable seat; 2301, first boss; 24, follower rod; 2401, annular protrusion; 2402, second boss; 25, connecting sleeve; 26, connecting rod; 27, second spring; 28, third spring; 29, solenoid valve. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0028] See also Figure 1-Figure 8 In an embodiment of the present invention, an environmentally friendly chlorine tail gas treatment device for recovering chlorobenzoyl chloride residue comprises a support 1 and an absorption tower 2 arranged on the support 1, and further comprises: The first tray 3, the second tray 4, and the third tray 5 are sequentially arranged in the absorption tower 2 from top to bottom, so that a reaction zone, a buffer zone, a liquid storage zone, and a liquid collection zone are formed inside the absorption tower 2 from top to bottom. The second tray 4 is fixed in the absorption tower 2, and the first tray 3 and the third tray 5 are sealed and slidably arranged in the absorption tower 2. The first tray 3 can move relative to the second tray 4, so as to cause the reaction zone and the buffer zone to change in volume. The reaction area and the liquid storage area are connected through multiple groups of atomization mechanisms, the third disk 5 can rise in the absorption tower 2 to pump the strong alkali in the liquid storage area into the reaction area, and the top of the absorption tower 2 is provided with a solenoid valve 29 for introducing chlorine gas; The first disk body 3 is connected to a recovery pipeline extending into the liquid collection area. When the volume change of the buffer area reaches a preset value, a switching mechanism arranged in the buffer area is triggered to switch the closed state of the recovery pipeline to a conducting state, so that the liquid after reaction in the reaction area enters the liquid collection area.

[0029] Furthermore, the method for treating chlorine tail gas in the present application is an alkaline solution absorption method, which utilizes a strong base (such as sodium hydroxide) to react with chlorine to generate hypochlorite and chloride, thereby removing chlorine from the tail gas.

[0030] Specifically, during operation, the solenoid valve 29 is automatically controlled by a program. Whenever the solenoid valve 29 is opened, the chlorine tail gas can enter the reaction zone. At the same time, the third disk 5 rises in the absorption tower 2, and the strong alkali in the liquid storage area can be pumped into the reaction zone through the atomization mechanism. It is worth mentioning that after the strong alkali passes through the atomization mechanism, it can enter the reaction zone in the form of atomization. The surface area of ​​the strong alkali is greatly increased after atomization, and the contact area with the chlorine is also increased accordingly, so that the chlorine molecules can react with the strong alkali more quickly, thereby accelerating the reaction process. Secondly, atomization helps the reaction to be more complete. The evenly distributed atomized droplets can allow the chlorine molecules to contact the strong alkali more evenly, reducing the situation where the local concentration is too high or too low, making the reaction more uniform, and improving the conversion rate of chlorine. Since the reaction is more complete, the chlorine content in the tail gas will be reduced, thereby reducing pollution to the environment, which meets the requirements of environmentally friendly chlorine tail gas treatment.

[0031] It should be noted that when chlorine and strong base are introduced into the reaction zone for reaction, chlorine is consumed as gas and no gas is generated, resulting in a decrease in the amount of gaseous substances in the reaction zone and a decrease in pressure. Although the reaction is exothermic and releases heat, resulting in an increase in temperature, which will accelerate the movement of gas molecules and increase pressure, in this reaction, the effect of the decrease in the amount of gaseous substances exceeds the effect of the increase in temperature, and the pressure in the reaction zone will decrease overall, and then the first disk 3 will move upward relative to the second disk 4.

[0032] It should be explained that the preset value is the corresponding pressure value in the reaction zone when the reaction is finished, which causes the change in the buffer zone.

[0033] Please refer again Figure 7 The atomizing mechanism includes a conduit 9 fixed to the second disk 4 and connected to the liquid storage area. The conduit 9 passes through the first disk 3 and is sealed and slidably connected to the first disk 3. An atomizing nozzle 10 is installed at one end of the conduit 9 away from the second disk 4. The atomizing nozzle 10 is located above the first disk 3.

[0034] Among them, for the atomizing nozzle 10, its model is not specifically limited in this application. Of course, its material must be corrosion-resistant to avoid the problem of poor durability caused by strong alkali corrosion.

[0035] A first spring 11 is also sleeved on the outer circumference of the conduit 9 , one end of the first spring 11 is connected to the first disk 3 , and the other end is connected to a limiting ring 901 fixed on the conduit 9 .

[0036] During the reaction, since the pressure in the reaction zone is reduced, the first disk 3 moves upward, and the first spring 11 is compressed, so that the volume of the reaction zone and the buffer zone changes. Specifically, the volume of the reaction zone decreases, and the volume of the buffer zone increases. Therefore, the reaction zone is automatically expanded, and the sealing performance of the absorption tower 2 is not adversely affected when the pressure changes due to the fixed volume of the reaction zone. This can effectively reduce the risk of chlorine leakage due to the destruction of the sealing function, thereby improving work safety.

[0037] It should be pointed out that in order to ensure that the first disk 3 can smoothly adapt to the environmental changes in the reaction zone and move during the reaction process, the buffer zone cannot be a closed chamber. For this purpose, a conducting port 201 is also provided on the absorption tower 2, and the conducting port 201 connects the buffer zone with the outside world.

[0038] Secondly, it should be added that the absorption tower 2 is also provided with a liquid inlet 202 and a liquid outlet 203, the liquid inlet 202 is connected to the liquid storage area, and is used to add strong alkali to the liquid storage area. It should be emphasized that the liquid inlet 202 needs to be equipped with a control valve. When adding strong alkali, the control valve is opened, and after the addition is completed, the control valve is closed, so that when the chlorine tail gas is subsequently treated, the strong alkali in the liquid storage area can enter the conduit 9 during the rising process of the third disk 5, and finally participate in the reaction in the reaction area in the form of atomization; the liquid outlet 203 is connected to the liquid collection area, and the liquid in the liquid collection area (i.e., the liquid after the strong alkali and chlorine react) can be recovered through the liquid outlet 203. Specifically, after the liquid outlet 203 guides the reaction residual liquid, the reaction residual liquid can be detected to further realize the recovery of the strong alkali solution to save raw materials. Secondly, the gas in the liquid collection area can be directly discharged into the activated carbon filter device, and the activated carbon is used to further ensure the thoroughness of the tail gas treatment.

[0039] Please refer again Figure 6 The absorption tower 2 is provided with a plurality of power mechanisms for driving the third disk 5 to rise and fall in the absorption tower 2, and the power mechanisms include a hydraulic cylinder 6 installed on the support 1 and a column 7 fixed to the movable end of the hydraulic cylinder 6 through a connecting plate 8; the column 7 penetrates the first disk 3 and the second disk 4 and connects the third disk 5, and the column 7 is sealed and slidably connected to the first disk 3 and the second disk 4.

[0040] During operation, whenever a strong alkali needs to be sprayed into the reaction zone, the hydraulic cylinder 6 works to drive the third plate 5 to rise a certain distance in the absorption tower 2 through the connecting plate 8 and the column 7, and then the strong alkali in the liquid storage area can enter the conduit 9 and then diffuse in the reaction zone in the form of atomization through the atomizing nozzle 10; It should be noted that, during each reaction, the rising stroke of the third disk 5, that is, the injection amount of the strong alkali, needs to be controlled. At the same time, the opening time of the solenoid valve 29 is strictly controlled to control the amount of chlorine introduced to avoid the problem of waste of resources and insufficient chlorine treatment caused by the incoordination of the amount of strong alkali and chlorine.

[0041] Please refer again Figure 5 and Figure 6The recovery pipeline includes a standpipe 12 fixed to the first disk body 3, the standpipe 12 passes through the second disk body 4 and the third disk body 5 and extends into the liquid collection area, the standpipe 12 is sealed and slidably connected with the second disk body 4 and the third disk body 5, and a valve body 13 is also provided on the standpipe 12. When the valve body 13 is opened, the standpipe 12 can connect the reaction area with the liquid collection area, and the switching mechanism can switch the opening and closing state of the valve body 13.

[0042] Furthermore, the valve body 13 can be a ball valve or a butterfly valve. When working, as the reaction in the reaction zone proceeds, when the pressure in the reaction zone reaches a preset value, the switching mechanism switches the closed state of the valve body 13 to the open state, so that the reacted liquid on the first disk 3 at this time will flow into the liquid collection area through the riser 12, thereby realizing the automatic recovery function of the reacted liquid after the reaction is completed; In order to avoid liquid residue on the first plate body 3 , a conical concave surface is provided on the upper portion of the first plate body 3 , thereby facilitating the liquid to gather at the riser 12 .

[0043] The present application provides a first disk body 3 that can move according to the reaction process, so that the volume of the buffer zone and the reaction zone changes. After each reaction, the switching mechanism can switch the closed state of the valve body 13 to the open state, so that the reacted liquid is recovered into the liquid collection area through the riser 12; Therefore, this device can realize the function of automatically recovering the reaction residual liquid after each reaction. In some existing spray towers, the reaction residual liquid is usually directly recycled into the strong alkali solution, which will cause the concentration of the strong alkali to gradually decrease. As the concentration of the strong alkali decreases, its ability to treat chlorine will also decrease, which may cause the problem of insufficient chlorine treatment. However, this device avoids the influence of the residual liquid on the concentration of the strong alkali by recovering the reaction residual liquid separately, ensuring that the strong alkali treatment capacity always remains stable. This design not only improves the reliability of chlorine treatment, but also optimizes the reaction efficiency.

[0044] On the other hand, the present application arranges a first tray 3, a second tray 4 and a third tray 5 in the absorption tower, which are arranged from top to bottom, so that the inside of the absorption tower 2 is divided into a reaction zone, a buffer zone, a liquid storage zone and a liquid collection zone arranged from top to bottom; During operation, when the pressure in the reaction zone changes, the first disk 3 can automatically move up according to the pressure change, so that the capacity of the reaction zone is reduced, realizing the automatic pressure replenishment function, and has a weakening function for the pressure difference between the reaction zone and the liquid collection zone, so as to avoid the problem that after the valve body 13 is turned on, the reaction residual liquid in the reaction zone flows too fast due to excessive pressure difference, and even the chlorine gas that cannot be treated in the reaction zone is recovered together, resulting in the problem of treatment omission.

[0045] Please refer again Figure 5 , Figure 7 as well as Figure 8 The switching mechanism includes a deflection structure provided on the second disk body 4 and an elastic release component matched with the deflection structure. The elastic release component can move along the radial direction of the second disk body 4 and perform a state switching action on the valve body 13. The deflection structure includes a rotating ring 21 rotatably mounted on the second disk body 4 and a gear 20 fixed on the rotating ring 21. The second disk body 4 is also slidably engaged with a second movable seat 18 that can move along the radial direction of the second disk body 4. The second movable seat 18 is connected to a toothed plate 19 meshing with the gear 20. The rotating ring 21 is also provided with a sector plate 22 matched with the elastic release component. A connecting rod 15 is provided between the second movable seat 18 and the first disk body 3. The two ends of the connecting rod 15 are respectively hinged to the first disk body 3 and the toothed plate 19.

[0046] Furthermore, the inner diameter of the rotating ring 21 is larger than the outer diameter of the stand pipe 12 , so that the stand pipe 12 can pass through smoothly.

[0047] During the reaction, when the first plate 3 moves upward, the first plate 3 can move by pulling the toothed plate 19 through the connecting rod 15, and the second movable seat 18 is used to guide the toothed plate 19. The second movable seat 18 slides toward the rotating ring 21, and the toothed plate 19 causes the rotating ring 21 to drive the sector plate 22 to deflect through the gear 20; When the volume change of the buffer zone reaches a preset value, that is, the deflection degree of the fan-shaped plate 22 reaches a certain value, the elastic release component is triggered to switch the closed state of the valve body 13 to the open state, so that the reaction residual liquid in the reaction zone can be recovered to the liquid collection area through the riser 12.

[0048] The elastic release assembly includes a third movable seat 23 slidably engaged on the second plate 4 and arranged in a "U" shape, and a follower rod 24 slidably connected to the third movable seat 23, an annular protrusion 2401 is formed on the follower rod 24, and two sides of the annular protrusion 2401 are respectively connected to a second spring 27 and a third spring 28 sleeved on the outer periphery of the follower rod 24; The third movable seat 23 can move along the radial direction of the second disk body 4, the second spring 27 and the third spring 28 are in contact with the third movable seat 23 at one end away from the annular protrusion 2401, one end of the follower rod 24 cooperates with the fan-shaped plate 22, and the other end is connected to the valve body 13. The valve stem of the valve body 13 is connected with a follower rod 14, and a through groove is provided on the follower rod 14. The bottom of the first disk body 3 is slidably engaged with a first movable seat 16 that can move along the radial direction of the first disk body 3, and the first movable seat 16 is connected to a driving column 1701 through a connecting arm 17, and the driving column 1701 passes through the through groove and is slidably connected to the follower rod 14; the first movable seat 16 is also connected to a connecting rod 26, and a connecting sleeve 25 is slidably engaged on the connecting rod 26, and the connecting sleeve 25 is fixed to the follower rod 24. A second boss 2402 is provided at one end of the follower rod 24 away from the connecting sleeve 25, a first boss 2301 is provided on the third movable seat 23, and a bending groove and a fan-shaped groove respectively adapted to the first boss 2301 and the second boss 2402 are provided on the fan-shaped plate 22, the first boss 2301 and the second boss 2402 respectively extend into the bending groove and the fan-shaped groove and are slidably connected with the fan-shaped plate 22.

[0049] It should be supplemented that the fan-shaped groove includes a first groove 2201, a second groove 2202, a third groove 2203 and a fourth groove 2204 which are connected; The bending groove includes a fifth groove 2205 and a sixth groove 2206 connected to each other, wherein the fifth groove 2205 is concentric with the rotating ring 21, and the distance between one end of the sixth groove 2206 connecting the fifth groove 2205 and the center of the rotating ring 21 is greater than the distance between the other end of the sixth groove 2206 and the center of the rotating ring 21.

[0050] Attach Figure 7 Taking the state shown in the figure as an example, at this time, the first convex column 2301 is located at the end of the fifth groove 2205 away from the sixth groove 2206, the second convex column 2402 is located at the connection between the first groove 2201 and the fourth groove 2204, and the valve body 13 is in a closed state; As the reaction proceeds, the first disk body 3 moves upward, causing the toothed plate 19 to deflect the sector plate 22 through the gear 20 (at this time, the connecting sleeve 25 and the connecting rod 26 slide relative to each other), and the first spring 11 is gradually compressed, and the first groove 2201 passes through the second protrusion 2402. At the same time, the fifth groove 2205 and the sixth groove 2206 pass through the first protrusion 2301 in sequence. When the fifth groove 2205 passes through the first protrusion 2301, the third movable seat 23 does not change in displacement, and when the sixth groove 2206 passes through the first protrusion 2301, it will cause the first protrusion 2301 and the third movable seat 23 to give way. Specifically, the third movable seat 23 slides toward the rotating ring 21. Since the second protrusion 2402 is still located in the first groove 2201 at this time, the second spring 27 is compressed. When the connection between the first groove 2201 and the second groove 2202 corresponds to the second convex column 2402, the second spring 27 can rebound, prompting the follower rod 24 to move toward the rotating ring 21, and the second convex column 2402 reaches the connection between the second groove 2202 and the third groove 2203. Correspondingly, the follower rod 24 also drives the first movable seat 16 to slide close to the valve body 13 through the connecting sleeve 25 and the connecting rod 26, and the connecting arm 17 and the driving column 1701 move together with the first movable seat 16. The driving column 1701 and the driven rod 14 are slidably matched, prompting the driven rod 14 to drive the valve stem of the valve body 13 to rotate, so that the valve body 13 is opened; After the valve body 13 is opened, the reaction area and the liquid collection area are connected, and the reaction residual liquid on the first disk body 3 can enter the liquid collection area for recovery through the vertical pipe 12. At the same time, the first spring 11 rebounds (the elastic potential energy of the first spring 11 is greater than the elastic potential energy of the second spring 27 and the third spring 28), so that the first disk body 3 moves up and resets. During this process, the toothed plate 19 drives the rotating ring 21 to drive the sector plate 22 to reversely deflect and reset through the gear 20; During the resetting process of the sector plate 22, the third groove 2203 passes through the second convex column 2402, the sixth groove 2206 and the fifth groove 2205 pass through the first convex column 2301 in sequence, and when the fifth groove 2205 passes through the first convex column 2301, the first convex column 2301 and the third movable seat 23 give way. Specifically, the third movable seat 23 slides away from the rotating ring 21. Since the second convex column 2402 is still located in the third groove 2203 at this time, the third spring 28 is compressed. When the fan plate 22 is reset, that is, the connection between the third groove 2203 and the fourth groove 2204 corresponds to the second convex column 2402, then the third spring 28 rebounds, prompting the follower rod 24 to move away from the rotating ring 21, the connection between the first groove 2201 and the fourth groove 2204 of the second convex column 2402, correspondingly, the follower rod 24 also drives the first movable seat 16 to slide away from the valve body 13 through the connecting sleeve 25 and the connecting rod 26, the connecting arm 17 and the driving column 1701 move with the first movable seat 16, the driving column 1701 and the driven rod 14 slide together, prompting the driven rod 14 to drive the valve stem of the valve body 13 to rotate, so that the valve body 13 returns to the closed state, which is convenient for the next round of reaction.

[0051] Therefore, through the coordination of various structures, the device uses a mechanical interlocking mechanism to realize the automatic switching of the state of the valve body 13, and has the characteristics of rapid response. The transmission design of each component ensures the timeliness of the switching process and avoids the occurrence of delays. In addition, the design adapts to the complex working conditions of the absorption tower 2, effectively reduces the failure rate of the state switching function of the valve body 13, and thus provides a reliable guarantee for the stable operation of the absorption tower 2.

[0052] Furthermore, during the movement of the switching mechanism, after the valve body 13 is opened, in order to balance the pressure, the first spring 11 will rebound, and the rebound process of the first spring 11 is related to the pressure in the reaction zone. During this process, the second boss 2401 is in the third groove 2203, and the valve body 13 still remains in an open state, which has a delay effect, thereby providing time for the removal of the reaction residue, making up for the shortcomings of using a timer to control the duration.

[0053] As another embodiment of the present invention, a method for treating chlorine tail gas using the environmentally friendly chlorine tail gas treatment device is also proposed, comprising the following steps: Step 1: reactants are introduced, the solenoid valve 29 is opened, the third disk 5 rises, chlorine gas and strong alkali enter the reactor, and the atomizing mechanism atomizes the strong alkali; Step 2: The reaction proceeds and the first disk 3 moves until the volume change of the buffer zone reaches a preset value; Step 3: After the reaction is finished, the residual liquid is recovered, and the switching mechanism connects the recovery pipeline, and the reaction residual liquid enters the liquid collection area; Step 4: The recovery pipeline is restored to a closed state for the next round of reaction.

[0054] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0055] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An environmentally friendly chlorine tail gas treatment device for recovering chlorobenzoyl chloride residue, comprising a support and an absorption tower arranged on the support; It is characterized in that Also includes: The first disk, the second disk, and the third disk are sequentially arranged in the absorption tower from top to bottom, so that a reaction zone, a buffer zone, a liquid storage zone, and a liquid collection zone are formed inside the absorption tower from top to bottom. The second disk is fixed in the absorption tower, and the first disk and the third disk are sealed and slidably arranged in the absorption tower. The first disk can move relative to the second disk to cause the reaction zone and the buffer zone to change in volume. The reaction area and the liquid storage area are connected through multiple groups of atomization mechanisms, the third disk can rise in the absorption tower to pump the strong alkali in the liquid storage area into the reaction area, and the top of the absorption tower is provided with a solenoid valve for introducing chlorine; The first disk body is connected to a recovery pipeline extending into the liquid collection area. When the volume change of the buffer area reaches a preset value, a switching mechanism arranged in the buffer area is triggered to switch the closed state of the recovery pipeline to a conducting state, so that the liquid after reaction in the reaction area enters the liquid collection area.

2. The environmentally friendly chlorine tail gas treatment device for recovering chlorobenzoyl chloride residue according to claim 1, characterized in that: The atomizing mechanism comprises a conduit fixed to the second disk and connected to the liquid storage area, the conduit passes through the first disk and is sealed and slidably connected to the first disk, and an atomizing nozzle is installed at one end of the conduit away from the second disk, and the atomizing nozzle is located above the first disk; A first spring is also sleeved on the outer circumference of the catheter, one end of the first spring is connected to the first disk, and the other end is connected to a limiting ring fixed on the catheter.

3. The environmentally friendly chlorine tail gas treatment device for recovering chlorobenzoyl chloride residue according to claim 1, characterized in that: The absorption tower is provided with a plurality of power mechanisms for driving the third disk to rise and fall in the absorption tower, and the power mechanisms include a hydraulic cylinder mounted on the support and a column fixed to the movable end of the hydraulic cylinder through a connecting plate; The column passes through the first disk body and the second disk body and is connected to the third disk body, and the column is sealed and slidably connected to the first disk body and the second disk body.

4. The environmentally friendly chlorine tail gas treatment device for recovering chlorobenzoyl chloride residue according to claim 1, characterized in that: The recovery pipeline includes a standpipe fixed to the first disk, the standpipe passes through the second disk and the third disk and extends into the liquid collection area, the standpipe is sealingly and slidingly connected to the second disk and the third disk, and a valve body is also provided on the standpipe. When the valve body is opened, the standpipe can connect the reaction area with the liquid collection area, and the switching mechanism can switch the opening and closing state of the valve body.

5. The environmentally friendly chlorine tail gas treatment device for recovering chlorobenzoyl chloride residue according to claim 4, characterized in that: The switching mechanism includes a deflection structure disposed on the second disk body and an elastic release component cooperating with the deflection structure. The elastic release component can move along the radial direction of the second disk body and perform a state switching action on the valve body.

6. The environmentally friendly chlorine tail gas treatment device for recovering chlorobenzoyl chloride residue according to claim 5, characterized in that: The deflection structure includes a rotating ring rotatably mounted on the second disk body, and a gear fixed on the rotating ring. The second disk body is also slidably engaged with a second movable seat that can move radially along the second disk body. The second movable seat is connected to a toothed plate meshing with the gear. Wherein, a sector plate cooperating with the elastic release assembly is also arranged on the rotating ring, a connecting rod is arranged between the second movable seat and the first disk body, and two ends of the connecting rod are respectively hinged to the first disk body and the tooth plate.

7. The environmentally friendly chlorine tail gas treatment device for recovering chlorobenzoyl chloride residue according to claim 6, characterized in that: The elastic release assembly includes a third movable seat slidably engaged on the second disk body and arranged in a "U" shape, and a follower rod slidably connected to the third movable seat, an annular protrusion is formed on the follower rod, and two sides of the annular protrusion are respectively connected to a second spring and a third spring sleeved on the outer circumference of the follower rod; The third movable seat can move radially along the second disk body, the second spring and the third spring are in contact with the third movable seat at one end away from the annular protrusion, one end of the follower rod cooperates with the fan-shaped plate, and the other end is connected to the valve body.

8. The environmentally friendly chlorine tail gas treatment device for recovering chlorobenzoyl chloride residue according to claim 7, characterized in that: The valve stem of the valve body is connected to a driven rod, a through slot is provided on the driven rod, a first movable seat which can move radially along the first disk body is slidably engaged with the bottom of the first disk body, the first movable seat is connected to a driving column through a connecting arm, the driving column passes through the through slot and is slidably connected to the driven rod; The first movable seat is also connected to a connecting rod, a connecting sleeve is slidably sleeved on the connecting rod, and the connecting sleeve is fixed to the follower rod.

9. The environmentally friendly chlorine tail gas treatment device for recovering chlorobenzoyl chloride residue according to claim 8, characterized in that: A second boss is provided at one end of the follower rod away from the connecting sleeve, a first boss is provided on the third movable seat, a bending groove and a fan-shaped groove respectively matched with the first boss and the second boss are provided on the fan-shaped plate, the first boss and the second boss respectively extend into the bending groove and the fan-shaped groove and are slidably connected with the fan-shaped plate.

10. A method for treating chlorine tail gas using the environmentally friendly chlorine tail gas treatment device according to claim 1, characterized in that: The following steps are involved: Step 1: reactants are introduced, the solenoid valve is opened, the third disk rises, chlorine gas and strong alkali enter the reactor, and the atomizing mechanism atomizes the strong alkali; Step 2: The reaction proceeds and the first disk moves until the volume change of the buffer zone reaches a preset value; Step 3: After the reaction is finished, the residual liquid is recovered, and the switching mechanism connects the recovery pipeline, and the reaction residual liquid enters the liquid collection area; Step 4: The recovery pipeline is restored to a closed state for the next round of reaction.

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