Wastewater treatment residual chlorine recovery device

Abstract

The utility model discloses a kind of wastewater treatment residual chlorine recovery devices, it is related to residual chlorine recovery technical field, including reaction kettle, support leg, first material pipe, second material pipe and fixed block;Compression mechanism is arranged above the reaction kettle, the compression mechanism includes first conveying pipe, second conveying pipe, coupling, first motor, support frame, auger and screw rod, the screw rod is installed in first conveying pipe, the auger is installed in second conveying pipe, the second conveying pipe is set to first conveying pipe side edge, the auger is set to coupling side edge, the coupling is installed above support frame, the first motor is set to support frame side edge;The flange interface mechanism of the upper end of three and the both ends of first conveying pipe, not only can effectively prevent residual chlorine-containing material leakage, but also facilitate subsequent disassembly cleaning or replacement parts, shorten maintenance time, reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of residual chlorine recovery technology, specifically to a wastewater treatment residual chlorine recovery device. Background Technology

[0002] In industrial production fields such as printing and dyeing, chemical industry, food processing, and waterworks disinfection, chlorine-containing agents such as sodium hypochlorite and chlorine are often added to water bodies to achieve sterilization, disinfection, or process auxiliary functions. After such processes are completed, a certain concentration of residual chlorine will remain in the discharged wastewater. If it is directly discharged into the natural environment, it will not only disrupt the ecological balance of the water body (such as inhibiting the activity of respiratory enzymes in aquatic organisms and causing fish deaths), but may also react with organic matter in the water to produce carcinogenic disinfection byproducts such as chloroform and haloacetic acid, posing a potential threat to soil, groundwater, and human health. Therefore, the recovery and treatment of residual chlorine in industrial wastewater has become a key requirement in the current field of environmental protection and resource recycling.

[0003] Currently, the mainstream treatment technologies for residual chlorine recovery in wastewater include adsorption, chemical reduction, and electrolysis. The corresponding recovery equipment is mostly based on a "reaction tank + auxiliary components" structure. By adding reducing agents such as sodium sulfite and ferrous sulfate into the reaction tank, or by setting up adsorption packing, the conversion and recovery of residual chlorine can be achieved. However, existing residual chlorine recovery equipment still has many technical defects in practical applications, making it difficult to meet the industrial production demand for efficient, stable, and low-consumption treatment.

[0004] For example, patent application number CN201721489474.2 discloses a device for removing residual chlorine from wastewater. This device removes residual chlorine from wastewater through an ion exchange unit. At the same time, the ion exchange unit can be eluted and loaded to achieve the recycling of the eluent, which to some extent saves costs. However, this device relies on the adsorption of ion exchange resin to remove residual chlorine. When the resin adsorption reaches saturation, it must be shut down for regeneration. It cannot achieve continuous wastewater treatment. This defect will directly interrupt the industrial wastewater treatment process. Especially for high-flow, continuously discharged industrial wastewater scenarios, it will significantly reduce the overall treatment efficiency and is difficult to adapt to the needs of continuous industrial production.

[0005] Based on this, this solution proposes "a wastewater treatment residual chlorine recovery device" to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a wastewater treatment residual chlorine recovery device to solve the problem mentioned in the background art that existing equipment on the market relies on the adsorption of ion exchange resin to remove residual chlorine, and when the resin adsorption reaches saturation, the machine must be shut down for regeneration.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a wastewater treatment residual chlorine recovery device, comprising a reaction vessel, a support leg, a first feed pipe, a second feed pipe, and a fixing block;

[0008] A compression mechanism is provided above the reactor. The compression mechanism includes a first conveying pipe, a second conveying pipe, a coupling, a first motor, a support frame, an auger, and a screw. The screw is installed inside the first conveying pipe, the auger is installed inside the second conveying pipe, the second conveying pipe is located on the side of the first conveying pipe, the auger is located on the side of the coupling, the coupling is installed above the support frame, and the first motor is located on the side of the support frame.

[0009] As a preferred technical solution of this utility model, the bottom of the reactor is fixedly connected to a support leg. There are six support legs evenly distributed in total, and the support legs are divided into upper and lower parts. The upper part of the support leg is a hollow steel pipe, and the bottom part of the support leg is an elastic gasket.

[0010] The above technical solution utilizes six evenly distributed support legs fixed to the bottom of the reactor. Through a two-part structural design, the weight of the reactor is evenly distributed across the mounting surface, effectively preventing tilting and swaying caused by uneven force during operation and ensuring the stable operation of the residual chlorine recovery process. The hollow steel pipe structure at the top ensures sufficient load-bearing strength for the support legs while significantly reducing their own weight, lowering the overall installation difficulty and transportation costs, thus balancing practicality and economy. The elastic gaskets at the bottom effectively absorb vibrations generated during reactor operation, reducing damage to the installation site and noise pollution caused by vibration, creating a more user-friendly working environment.

[0011] As a preferred technical solution of this utility model, the upper part of the reactor is connected to the second material pipe, the second material pipe is symmetrically connected to the first material pipe, the first material pipe and the second material pipe have the same structure, and the side of the reactor is connected to the third material pipe, the upper part of the third material pipe, the first material pipe and the second material pipe is a flange interface mechanism.

[0012] Using the above technical solution, the second feed pipe connected above the reactor and the symmetrically arranged first feed pipe can be used to transport different materials such as wastewater containing residual chlorine to be treated and reagents for residual chlorine recovery, respectively. The third feed pipe connected to the side can flexibly replenish auxiliary reagents or adjusting solutions. The three have clear division of labor and do not interfere with each other, avoiding the problem of reduced reaction efficiency caused by premature mixing of different materials during the feeding stage, and significantly improving the efficiency of feeding and subsequent reaction. Moreover, the flange interface mechanism used at the upper end of the first, second and third feed pipes has better sealing performance than ordinary interfaces, which can effectively prevent leakage of materials or reagents containing residual chlorine. This not only avoids environmental pollution caused by residual chlorine leakage, but also reduces material waste and ensures the utilization rate of raw materials for residual chlorine recovery. At the same time, the flange interface is easy to disassemble and assemble, and the operation is convenient when cleaning, repairing or replacing worn parts of the feed pipes, shortening equipment downtime for maintenance and reducing maintenance costs.

[0013] As a preferred technical solution of this utility model, a support frame is fixedly connected to the upper surface of the reactor, a first motor is fixedly connected above the support frame, the right shaft end of the first motor is fixedly connected to a coupling, the shaft end of the coupling is fixedly connected to an auger, the support frame is fixedly connected to a second conveying pipe, the auger is rotatably connected inside the second conveying pipe, a screw is fixedly connected to the shaft end of the auger, a first conveying pipe is bolted to the right side of the second conveying pipe, a screw is rotatably connected inside the first conveying pipe, the first conveying pipe is connected to a third material pipe, and both ends of the first conveying pipe adopt a flange interface structure;

[0014] Using the above technical solution, the support frame fixedly connected to the upper surface of the reactor provides stable installation support for the first motor. The right shaft end of the first motor is fixedly connected to the auger via a coupling, enabling synchronous driving of the auger and screw. The auger achieves stable material conveying within the second conveying pipe, while the screw compresses the material within the first conveying pipe, ensuring that the residual chlorine-containing material is compressed and compacted before entering the reactor. This significantly increases the contact area between the material and the reaction reagents inside the reactor, accelerating the residual chlorine reaction and recovery process and improving the residual chlorine recovery rate. The fixed connection between the support frame and the second conveying pipe, and the bolt fixing method between the second and first conveying pipes, ensure that the components will not shift or loosen during the operation of the auger and screw, guaranteeing the continuity of the material conveying and compression process and reducing the risk of equipment failure. The first conveying pipe connects to the third material pipe, and both ends use flange interfaces to ensure sealing during material conveying and facilitate subsequent disassembly of the first conveying pipe to clean residual material inside, preventing residual chlorine from adhering to the inner wall of the pipe and causing blockage, thus ensuring smooth material conveying.

[0015] As a preferred technical solution of this utility model, a fixing block is fixedly connected to the center position of the upper surface of the reactor, an observation groove is opened on the side of the fixing block, and a second motor is fixedly connected to the upper surface of the fixing block. The bottom output shaft of the second motor passes through the fixing block and is fixedly connected to the stirring paddle. The bottom center position of the reactor is connected to the discharge pipe.

[0016] The above-mentioned technical solution utilizes a fixed block at the center of the upper surface of the reactor, which provides a stable mounting base for the second motor. The observation slot on its side allows operators to monitor the reaction status of the materials inside the reactor in real time, facilitating timely adjustments to parameters such as the second motor's speed and feed rate. This prevents low residual chlorine recovery efficiency due to incomplete reaction or material waste due to over-reaction. The output shaft at the bottom of the second motor passes through the fixed block and is fixedly connected to the stirring paddle. The high-speed rotation of the stirring paddle inside the reactor thoroughly mixes the wastewater and the reaction reagents, breaking up material stratification, shortening the reaction time between residual chlorine and the reagents, and further improving residual chlorine recovery efficiency. The discharge pipe connected to the center of the bottom of the reactor allows for the concentrated and rapid discharge of materials after the reaction, reducing the amount of material residue at the bottom of the reactor and minimizing waste. It also facilitates subsequent cleaning of the reactor interior, preventing residual material from affecting the next residual chlorine recovery reaction.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The six evenly distributed support legs at the bottom of the reactor, with hollow steel pipes at the top to balance strength and lightweight, and elastic pads at the bottom to reduce vibration and noise, can evenly distribute the weight of the equipment to prevent tilting, reduce vibration damage to the site and noise pollution, and ensure a stable and environmentally friendly residual chlorine recovery process.

[0019] 2. The first, second, and third feed pipes symmetrically positioned above the reactor have clearly defined functions, allowing for the separate transport of wastewater, reagents, and auxiliary reagents, thus preventing premature mixing of materials from affecting the reaction. The flange interface mechanisms at the upper ends of the three pipes and both ends of the first feed pipe not only effectively prevent leakage of materials containing residual chlorine but also facilitate subsequent disassembly, cleaning, or replacement of parts, shortening maintenance time and reducing costs.

[0020] 3. The first motor is fixed to the support frame on the upper surface of the reactor. The motor synchronously drives the auger in the second conveying pipe and the screw in the first conveying pipe through the coupling. The auger stably feeds the material and the screw compresses the material, making the material containing residual chlorine more compact before entering the reactor, greatly increasing the contact area with the reagent and accelerating the reaction process. At the same time, the second motor drives the stirring paddle in the reactor to rotate at high speed, breaking up the material stratification and further shortening the reaction time between residual chlorine and the reagent. Under the dual effect, the residual chlorine recovery rate is significantly improved.

[0021] 4. The observation slot on the side of the fixed block allows operators to monitor the material status inside the reactor in real time, facilitating timely adjustment of parameters to avoid incomplete or excessive reaction; the discharge pipe at the center of the bottom of the reactor allows the material after reaction to be discharged in a concentrated manner, reducing residue at the bottom of the reactor, which not only reduces material waste but also facilitates subsequent cleaning of the reactor, avoiding residue from affecting the next recovery effect. Attached Figure Description

[0022] Figure 1 This is a side view of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the reaction vessel and support frame structure of this utility model;

[0024] Figure 3 This is a side view of the cross-sectional structure of the reaction vessel of this utility model;

[0025] Figure 4 This is a schematic diagram of the auger and screw structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the stirring paddle and the second motor structure of this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the second motor and the fixing block of this utility model.

[0028] In the diagram: 1. Reactor; 2. Support leg; 3. First feed pipe; 4. Second feed pipe; 5. Third feed pipe; 6. First conveying pipe; 7. Second conveying pipe; 8. Coupling; 9. First motor; 10. Support frame; 11. Discharge pipe; 12. Observation trough; 13. Screw; 14. Screw; 15. Agitator; 16. Second motor; 17. Fixing block. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-6 The present invention provides a wastewater treatment residual chlorine recovery device, comprising a reaction vessel 1, a support leg 2, a first feed pipe 3, a second feed pipe 4, a third feed pipe 5, a first conveying pipe 6, a second conveying pipe 7, a coupling 8, a first motor 9, a support frame 10, a discharge pipe 11, an observation trough 12, an auger 13, a screw 14, a stirring paddle 15, a second motor 16, and a fixing block 17.

[0031] A compression mechanism is installed above the reactor 1. The compression mechanism includes a first conveying pipe 6, a second conveying pipe 7, a coupling 8, a first motor 9, a support frame 10, an auger 13, and a screw 14. The screw 14 is installed inside the first conveying pipe 6, the auger 13 is installed inside the second conveying pipe 7, the second conveying pipe 7 is located on the side of the first conveying pipe 6, the auger 13 is located on the side of the coupling 8, the coupling 8 is installed above the support frame 10, and the first motor 9 is located on the side of the support frame 10.

[0032] The bottom of the reactor 1 is fixedly connected to six evenly distributed support legs 2. Each support leg 2 consists of two parts: an upper part is a hollow steel pipe, and a lower part is an elastic gasket. By adopting the above technical solution, the weight of the reactor 1 can be evenly distributed to the mounting surface, preventing tilting and shaking of the equipment due to uneven force during operation, and ensuring the stability of the residual chlorine recovery process. The hollow steel pipe structure ensures load-bearing strength while significantly reducing its own weight, reducing the difficulty of equipment installation and transportation costs, and taking into account both practicality and economy. The bottom elastic gasket can absorb the vibration generated by the operation of the equipment, reduce damage to the installation site, and reduce vibration noise, creating a more user-friendly working environment.

[0033] The reactor 1 is connected to a second feed pipe 4 at the top, which is symmetrically connected to a first feed pipe 3. The first feed pipe 3 and the second feed pipe 4 have the same structure. The reactor 1 is connected to a third feed pipe 5 on the side. The upper connection parts of the first feed pipe 3, the second feed pipe 4, and the third feed pipe 5 are all flange interface mechanisms. With the above technical solution, the first feed pipe 3 and the second feed pipe 4 can respectively transport the wastewater containing residual chlorine to be treated and the residual chlorine recovery reaction agent. The third feed pipe 5 can flexibly replenish auxiliary reagents or adjustment liquid. The three have clear division of labor and do not interfere with each other, avoiding the premature mixing of different materials, which would lead to a decrease in reaction efficiency and improve the feeding and subsequent reaction efficiency. The flange interface mechanism has better sealing performance than ordinary interfaces, which can effectively prevent the leakage of materials or agents containing residual chlorine, thus avoiding environmental pollution by residual chlorine, reducing material waste, and ensuring the utilization rate of raw materials. At the same time, the flange interface is easy to disassemble and assemble, making it convenient to clean, repair the feed pipe, or replace worn parts, shortening the equipment downtime for maintenance and reducing maintenance costs.

[0034] A support frame 10 is fixedly connected to the upper surface of the reactor 1. A first motor 9 is fixedly connected above the support frame 10. The right shaft end of the first motor 9 is fixedly connected to a coupling 8, and the shaft end of the coupling 8 is fixedly connected to an auger 13. The support frame 10 is also fixedly connected to a second conveying pipe 7. An auger 13 is rotatably connected inside the second conveying pipe 7, and a screw 14 is fixedly connected to the shaft end of the auger 13. A first conveying pipe 6 is fixed to the right side of the second conveying pipe 7 by bolts. The screw 14 is rotatably connected inside the first conveying pipe 6, and the first conveying pipe 6 is connected to a third feed pipe 5. Both ends of the first conveying pipe 6 adopt a flange interface structure. With the above technical solution, the support frame 10 provides stable installation support for the first motor 9. The first motor 9 synchronously drives the auger 13 and the screw 14 through the coupling 8. 3. Stable material conveying is achieved in the second conveying pipe 7. The screw 14 compresses the material in the first conveying pipe 6, so that the material containing residual chlorine is compressed and compacted before entering the reactor 1, which greatly increases the contact area with the reaction reagents in the reactor, accelerates the residual chlorine reaction and recovery process, and improves the residual chlorine recovery rate. The fixed connection between the support frame 10 and the second conveying pipe 7, and the bolt fixation between the second conveying pipe 7 and the first conveying pipe 6, ensure that the components do not shift or loosen during operation, ensure the continuity of material conveying and compression, and reduce the risk of equipment failure. The flange interface of the first conveying pipe 6 and the flange interface of the feeding structure form a design correspondence to ensure the sealing of material conveying, and at the same time facilitate the disassembly and cleaning of residual materials in the pipe, avoid residual chlorine adhesion causing pipe blockage, and ensure smooth conveying.

[0035] A fixing block 17 is fixedly connected to the center of the upper surface of the reactor 1. An observation slot 12 is opened on the side of the fixing block 17, and a second motor 16 is fixedly connected above it. The bottom output shaft of the second motor 16 passes through the fixing block 17 and is fixedly connected to the stirring paddle 15. The bottom center of the reactor 1 is connected to the discharge pipe 11. With the above technical solution, the fixing block 17 provides a stable installation base for the second motor 16, and its side observation slot 12 allows the operator to observe the material status inside the reactor 1 in real time, including the liquid level, mixing uniformity, and reaction color change, so as to make timely adjustments to the second motor. Parameters such as rotation speed and feed rate are set to avoid incomplete reaction leading to low residual chlorine recovery efficiency or excessive reaction causing material waste. The second motor 16 drives the agitator 15 to rotate at high speed in the reactor 1, which can fully mix the wastewater to be treated with the reaction agent, break up material stratification, shorten the reaction time of residual chlorine and the agent, and further improve the recovery efficiency. The bottom discharge pipe 11 can concentrate and quickly discharge the material containing residual chlorine recovery products after the reaction is completed, reduce the amount of residue in the reactor, reduce material waste, and at the same time provide convenience for subsequent cleaning of the reactor 1, so as to avoid residual material affecting the effect of the next reaction.

[0036] Working Principle: In the operation of a wastewater treatment residual chlorine recovery device, the feeding stage is the primary step. The device achieves branched feeding through three sets of material pipes with clearly defined structures and functions. The first material pipe 3 and the second material pipe 4, symmetrically arranged above the reaction vessel 1, are used to transport the wastewater containing residual chlorine to be treated and the residual chlorine recovery reaction agent, respectively. The third material pipe 5, connected to the side, is responsible for supplementing auxiliary reagents or adjusting liquids. The clear division of labor among the three sets of pipes can avoid the premature mixing of different materials, which would lead to a decrease in reaction efficiency. At the same time, the upper ends of the three sets of material pipes all adopt flange interface mechanisms, which can effectively prevent leakage of residual chlorine-containing materials or agents, avoid environmental pollution and material waste, and also provide convenience for subsequent cleaning, maintenance and component replacement of the material pipes, ensuring a stable and orderly feeding process.

[0037] After feeding, the material enters the compression and conveying stage. In this stage, the material is optimized by the compression mechanism above the reactor 1. The support frame 10 on the upper surface of the reactor 1 provides stable support for the first motor 9. After the first motor 9 starts, it drives the auger 13 in the second conveying pipe 7 and the screw 14 in the first conveying pipe 6 to operate synchronously through the coupling 8. The auger 13 can stably convey the material to the screw 14, and the screw 14 can compress the material, making the material containing residual chlorine dense before entering the reactor 1, which greatly increases its contact area with the reaction reagents in the reactor. In addition, the fixed connection between the support frame 10 and the second conveying pipe 7, the bolt fixing between the second conveying pipe 7 and the first conveying pipe 6, and the flange interfaces at both ends of the first conveying pipe 6 all ensure the continuity and sealing of the material conveying and compression process, reducing the risk of equipment failure.

[0038] After the compressed material enters the reactor 1, it enters the reaction and stirring stage inside the reactor. This stage is the core of residual chlorine recovery. The fixed block 17 at the center of the upper surface of the reactor 1 not only provides the installation base for the second motor 16, but the observation slot 12 opened on its side also allows the operator to observe the liquid level height, mixing uniformity and reaction color change of the material in the reactor in real time. This facilitates timely adjustment of parameters such as the speed of the second motor 16 and the feed rate, avoiding insufficient or excessive reaction. The bottom output shaft of the second motor 16 passes through the fixed block 17 and is connected to the stirring paddle 15. After the motor starts, it drives the stirring paddle 15 to rotate at high speed inside the reactor 1, breaking the material stratification phenomenon and making the wastewater to be treated, the reaction agent and the compressed auxiliary material fully mixed, shortening the reaction time of residual chlorine and the agent, and improving the residual chlorine recovery efficiency.

[0039] After the residual chlorine reacts with the reagent, the device enters the product discharge stage. The discharge pipe 11, which is connected to the center of the bottom of the reactor 1, is opened, allowing the material after the reaction, including the residual chlorine recovery product and the treated wastewater, to be discharged in a concentrated and rapid manner. This reduces the amount of material residue at the bottom of the reactor 1 and minimizes material waste. At the same time, the discharge pipe 11 can also serve as a channel for subsequent cleaning of the reactor 1, facilitating the introduction of cleaning liquid into the reactor to remove residual material from the inner wall. This prevents residual substances from affecting the purity and efficiency of the next residual chlorine recovery reaction, ensuring the stable operation of the device.

[0040] This completes a series of tasks. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wastewater treatment residual chlorine recovery device, comprising a reaction vessel (1); characterized in that: A compression mechanism is provided above the reactor (1). The compression mechanism includes a first conveying pipe (6), a second conveying pipe (7), a coupling (8), a first motor (9), a support frame (10), an auger (13), and a screw (14). The screw (14) is installed inside the first conveying pipe (6), the auger (13) is installed inside the second conveying pipe (7), the second conveying pipe (7) is located on the side of the first conveying pipe (6), the auger (13) is located on the side of the coupling (8), the coupling (8) is installed above the support frame (10), and the first motor (9) is located on the side of the support frame (10).

2. The wastewater treatment residual chlorine recovery device according to claim 1, characterized in that, The bottom of the reactor (1) is fixedly connected to a support leg (2). There are six support legs (2) evenly distributed in total. The support leg (2) is divided into upper and lower parts. The upper part of the support leg (2) is a hollow steel pipe, and the bottom part of the support leg (2) is an elastic gasket.

3. The wastewater treatment residual chlorine recovery device according to claim 2, characterized in that, The reactor (1) is connected to the upper part of the second material pipe (4), and the second material pipe (4) is connected to the first material pipe (3) at a symmetrical position. The first material pipe (3) and the second material pipe (4) have the same structure, and the reactor (1) is connected to the side of the third material pipe (5). The upper part of the third material pipe (5), the first material pipe (3) and the second material pipe (4) is a flange interface mechanism.

4. The wastewater treatment residual chlorine recovery device according to claim 3, characterized in that, The upper surface of the reactor (1) is fixedly connected to a support frame (10), and a first motor (9) is fixedly connected above the support frame (10). The right shaft end of the first motor (9) is fixedly connected to a coupling (8), and the shaft end of the coupling (8) is fixedly connected to an auger (13). The support frame (10) is fixedly connected to a second conveying pipe (7), and the auger (13) is rotatably connected inside the second conveying pipe (7). The shaft end of the auger (13) is fixedly connected to a screw (14). The right side of the second conveying pipe (7) is bolted to a first conveying pipe (6), and the screw (14) is rotatably connected inside the first conveying pipe (6). The first conveying pipe (6) is connected to a third material pipe (5), and both ends of the first conveying pipe (6) adopt a flange interface structure.

5. The wastewater treatment residual chlorine recovery device according to claim 4, characterized in that, A fixing block (17) is fixedly connected to the center of the upper surface of the reactor (1). An observation groove (12) is opened on the side of the fixing block (17). A second motor (16) is fixedly connected to the upper surface of the fixing block (17). The bottom output shaft of the second motor (16) passes through the fixing block (17). The output shaft of the second motor (16) is fixedly connected to the stirring paddle (15). The bottom center of the reactor (1) is connected to the discharge pipe (11).

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