A solvent recovery device for cellulose ether production
By introducing secondary staged filtration and secondary staged distillation separation techniques into the solvent recovery equipment, the problems of poor impurity filtration capacity and low separation rate in existing equipment have been solved, and efficient solvent recovery has been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG HEAD GRP CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-06-09
Smart Images
Figure CN224331513U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of solvent recovery equipment, and in particular to a solvent recovery device for the production of cellulose ethers. Background Technology
[0002] Cellulose ethers are high molecular weight compounds with an ether structure made from cellulose. A large amount of organic solvents are used in their production process. In order to reduce production costs, it is necessary to recycle and reuse the organic solvents during the production process.
[0003] Existing solvent recovery equipment, such as the Chinese utility model patent CN2123726522U (a solvent recovery device for cellulose ether production), represents a class of prior art whose main structure includes: a vessel, a steam inlet pipe, a buffer section, a hydrocyclone separator, and a stirrer. The vessel holds the cellulose ether solution, the steam inlet pipe heats the cellulose ether solution, the buffer section reduces the carry-out of cellulose ether, the hydrocyclone separator reduces solid impurities carried by the steam, and the stirrer stirs the cellulose ether solution, improving its heating uniformity and reducing its crystallization and dissolution.
[0004] However, the existing technology and equipment still have the following problems when in use: the existing machines have poor filtering ability for solid impurities, which makes it easy for more solid impurities to enter the inside of the vessel, resulting in low recovery efficiency. In addition, the existing machines only separate and recover the solvent through a single distillation, resulting in a low separation rate and poor machine recovery effect. Utility Model Content
[0005] To address the aforementioned technical problems, this utility model provides a solvent recovery device for cellulose ether production. The device performs secondary filtration of the solvent using a filtration unit, reducing the amount of impurities entering the machine and improving recovery efficiency. Furthermore, by combining a distillation unit and a condensation collection unit to perform secondary distillation separation and recovery of the solvent, the separation rate is improved, thereby enhancing recovery efficiency.
[0006] To achieve the above objectives, this utility model provides a solvent recovery device for cellulose ether production, including a machine body; it also includes a distillation device, a stirring device, a condensation and collection device, and a filtration device. The distillation device is mounted on the machine body, the stirring device is mounted on both the machine body and the distillation device, and the condensation and collection device and the filtration device are both mounted on the distillation device. The machine body provides support, the distillation device holds and heats the solvent, the stirring device stirs the solvent, the condensation and collection device condenses, separates, and stores the solvent vapor, and the filtration device filters the solvent entering the machine.
[0007] Preferably, the body includes a first bracket and a second bracket. The first bracket has two mounting platforms evenly spaced on it, and the second bracket is mounted on the first bracket and located between the two mounting platforms of the first bracket, thus providing support.
[0008] Preferably, the distillation apparatus includes a first vessel body, a second vessel body, two caps, and two electric heaters. The first vessel body and the second vessel body are respectively mounted on two mounting platforms of a support. The bottom of the first vessel body and the second vessel body are respectively provided with a discharge port. The top of the first vessel body is provided with a first feed port, a first evaporation port, and a first mounting groove. The bottom of the second vessel body is also provided with a second mounting groove. The top of the second vessel body is provided with a second feed port and a second evaporation port. The two caps are respectively installed at the two discharge ports of the first vessel body and the second vessel body. The two electric heaters are respectively installed at the lower part of the first vessel body and the second vessel body. The first vessel body and the second vessel body hold the solvent, and the electric heaters heat the first vessel body and the second vessel body.
[0009] Preferably, the bottom of the first and second vessel bodies are further provided with a plurality of columnar protrusions of the same material; the columnar protrusions can disrupt the swirling flow generated by the solvent during stirring, thereby improving the stirring effect, and the columnar protrusions of the same material can increase the contact area between the first and second vessel bodies and the solvent while preventing electrochemical corrosion, thereby improving the heating efficiency.
[0010] Preferably, the stirring device includes a stirring shaft, a first pulley, a second pulley, multiple belts, a reducer, and a motor. The stirring shaft is rotatably installed in mounting slots one and two of the vessel body. The first pulley is fixedly mounted on the stirring shaft and located between the vessel body and the vessel body. The second pulley is rotatably installed on the top of a support. Multiple belts are respectively installed on the first and second pulleys. The reducer is fixedly installed at the bottom of the support and rotatably connected between the support and the second pulley. The motor is fixedly installed at the bottom of the feed cover and provides power to the second pulley through the reducer. The power provided by the motor is transmitted through the reducer, belts, second pulley, and first pulley, driving the stirring shaft to rotate and stir the solvent inside the vessel body and the vessel body, thereby improving the uniformity of solvent heating.
[0011] Preferably, the condensation collection device includes a first pipe, a reducing joint, a second pipe, multiple first-sized heat dissipation fins, a storage tank, a third pipe, a heat dissipation water jacket, and multiple second-sized heat dissipation fins. One end of the first pipe is installed at the evaporation port of the first vessel, and the reducing joint is connected to the bottom of the other end of the first pipe. One end of the second pipe is installed at the bottom of the reducing joint, and the other end of the second pipe is installed at the inlet of the second vessel. The diameter of the second pipe is much larger than that of the first pipe. The multiple first-sized heat dissipation fins are evenly spaced on the first pipe. The storage tank is installed on the ground. One end of the third pipe is installed at the top of the storage tank, and the other end of the third pipe is installed at the evaporation port of the second vessel. The third pipe is arranged in an upward-pointing mountain shape between the storage tank and the second vessel. The heat dissipation water jacket is installed on the inclined portion of the third pipe near the storage tank. The multiple second-sized heat dissipation fins are evenly spaced on the third pipe near the storage tank. On the inclined section near vessel body two; after the solvent inside vessel body one evaporates, it first enters pipe one. The long and tortuous pipe one cools the steam, causing most of the solvent to fall back into vessel body one, improving the purity of solvent separation. Heat dissipation fins one dissipate heat from pipe one. The reducing joint and pipe two cooperate to expand the volume of steam at this point, causing the steam to condense quickly, reducing the amount of steam that overflows directly from evaporation port two of vessel body two, and improving the purity of solvent separation. Then, the solvent inside vessel body two evaporates and enters pipe three. In the rising section of pipe three, heat dissipation fins two dissipate heat from pipe three, cooling the steam and causing most of the solvent to fall back into vessel body two, improving the purity of solvent separation. In the descending section of pipe three, a heat dissipation water jacket rapidly dissipates heat from pipe three, causing the steam to condense completely at this point, facilitating the separation of the solvent to enter the storage tank for storage.
[0012] Preferably, the filtration device includes two sets of supports (three), a hydrocyclone separator, a collection box, a flexible pipe, a feed cover, a support (four), a filter cartridge, a filter bag, and a pipe (four). Both sets of supports (three) are installed on the ground. The hydrocyclone separator and the filter cartridge are respectively installed on the two sets of supports (three). The collection box is installed at the bottom of the hydrocyclone separator. One end of the flexible pipe is installed at the top of the hydrocyclone separator, and the feed cover is installed at the bottom of the other end of the flexible pipe. Support (four) is detachably installed at the bottom of the feed cover and is also installed at the top of the filter cartridge. Support (four) is provided with an installation groove (three). The filter bag is detachably installed in the installation groove (three). One end of pipe (four) is installed at the bottom of the filter cartridge, and the other end of pipe (four) is installed at the feed inlet of the vessel body (one). The hydrocyclone separator separates the input solvent by swirling through its own structure, removing most of the solid impurities contained in the solvent. The collection box stores the solid impurities. Then, the solvent enters the filter bag, and the filter bag filters the solvent. The filtered solvent is then input into the vessel body (one) through pipe (four).
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: by performing secondary fractional filtration on the solvent, the amount of impurities entering the machine can be reduced, and the recovery efficiency is higher; and by performing secondary fractional distillation separation and recovery on the solvent, the separation rate can be improved, thereby improving the recovery efficiency. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the isometric structure of this utility model;
[0015] Figure 2 This is an isometric structural diagram of the fuselage;
[0016] Figure 3 This is an isometric structural diagram of the distillation apparatus;
[0017] Figure 4 This is a schematic diagram of the isometric cross-sectional structure of vessel body one;
[0018] Figure 5 This is a schematic diagram of the isometric cross-sectional structure of the stirring device;
[0019] Figure 6 This is an isometric structural diagram of the condensation collection device;
[0020] Figure 7 This is a schematic diagram of the isometric cross-sectional structure of the filtration device.
[0021] The attached diagram is labeled as follows: 01, machine body; 11, support frame one; 12, support frame two; 02, distillation apparatus; 21, vessel body one; 22, vessel body two; 23, pipe cover; 24, electric heater; 03, stirring device; 31, stirring shaft; 32, pulley one; 33, pulley two; 34, belt; 35, reducer; 36, motor; 04, condensation and collection device; 41, pipe one; 42, reducing joint; 43, pipe two; 44, heat dissipation fin one; 45, storage tank; 46, pipe three; 47, heat dissipation water jacket; 48, heat dissipation fin two; 05, filtration device; 51, support frame three; 52, hydrocyclone separator; 53, collection box; 54, flexible pipe; 55, feed cover; 56, support frame four; 57, filter cartridge; 58, filter bag; 59, pipe four. Detailed Implementation
[0022] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.
[0023] Example 1:
[0024] like Figure 1As shown, the solvent recovery device for cellulose ether production provided in this embodiment includes a machine body 01; it also includes a distillation device 02, a stirring device 03, a condensation and collection device 04, and a filtration device 05. The distillation device 02 is mounted on the machine body 01, the stirring device 03 is mounted on both the machine body 01 and the distillation device 02, and the condensation and collection device 04 and the filtration device 05 are both mounted on the distillation device 02. The machine body 01 provides support, the distillation device 02 holds and heats the solvent, the stirring device 03 stirs the solvent, the condensation and collection device 04 condenses, separates, and stores the solvent vapor, and the filtration device 05 filters the solvent entering the machine.
[0025] like Figure 2 As shown, the body 01 includes a first bracket 11 and a second bracket 12. Two mounting platforms are evenly spaced on the first bracket 11. The second bracket 12 is mounted on the first bracket 11 and is located between the two mounting platforms of the first bracket 11.
[0026] like Figure 3 As shown, the distillation apparatus 02 includes a first vessel body 21, a second vessel body 22, two tube covers 23, and two electric heaters 24. The first vessel body 21 and the second vessel body 22 are respectively mounted on two mounting platforms of the support 11. The bottom of the first vessel body 21 and the second vessel body 22 are respectively provided with a discharge port. The top of the first vessel body 21 is provided with a first feed port, a first evaporation port, and a first mounting groove. The bottom of the second vessel body 22 is also provided with a second mounting groove. The top of the second vessel body 22 is provided with a second feed port and a second evaporation port. The two tube covers 23 are respectively installed at the two discharge ports of the first vessel body 21 and the second vessel body 22. The two electric heaters 24 are respectively installed at the lower part of the first vessel body 21 and the second vessel body 22.
[0027] like Figure 5 As shown, the stirring device 03 includes a stirring shaft 31, a first pulley 32, a second pulley 33, multiple belts 34, a reducer 35, and a motor 36. The stirring shaft 31 is rotatably installed in the mounting groove 1 of the first vessel body 21 and the mounting groove 2 of the second vessel body 22. The first pulley 32 is fixedly mounted on the stirring shaft 31 and is located between the first vessel body 21 and the second vessel body 22. The second pulley 33 is rotatably installed on the top of the second support 12. Multiple belts 34 are respectively installed on the first pulley 32 and the second pulley 33. The reducer 35 is fixedly installed at the bottom of the second support 12 and is rotatably connected between the second support 12 and the second pulley 33. The motor 36 is fixedly installed at the bottom of the feed cover 55 and provides power to the second pulley 33 through the reducer 35.
[0028] like Figure 6As shown, the condensation collection device 04 includes a first pipe 41, a reducing joint 42, a second pipe 43, multiple first heat dissipation fins 44, a storage tank 45, a third pipe 46, a heat dissipation water jacket 47, and multiple second heat dissipation fins 48. One end of the first pipe 41 is installed at the evaporation port of the first vessel 21, and the reducing joint 42 is connected and installed at the bottom of the other end of the first pipe 41. One end of the second pipe 43 is installed at the bottom of the reducing joint 42, and the other end of the second pipe 43 is installed at the feed inlet 2 of the second vessel 22. The diameter of the second pipe 43 is much larger than that of the first pipe 41. The pipe diameter is 41, and multiple heat dissipation fins 44 are evenly spaced on the pipe 41. The storage tank 45 is installed on the ground. One end of the pipe 46 is installed on the top of the storage tank 45, and the other end of the pipe 46 is installed at the evaporation port 2 of the vessel 22. The pipe 46 is arranged in an upward-pointing mountain shape between the storage tank 45 and the vessel 22. The heat dissipation water jacket 47 is installed on the inclined part of the pipe 46 near the storage tank 45. Multiple heat dissipation fins 48 are evenly spaced on the inclined part of the pipe 46 near the vessel 22.
[0029] like Figure 7 As shown, the filtration device 05 includes two sets of support brackets 51, a hydrocyclone separator 52, a collection box 53, a flexible pipe 54, a feed cover 55, a support bracket 56, a filter cartridge 57, a filter bag 58, and a pipe 59. Both sets of support brackets 51 are installed on the ground. The hydrocyclone separator 52 and the filter cartridge 57 are respectively installed on the two sets of support brackets 51. The collection box 53 is installed at the bottom of the hydrocyclone separator 52. One end of the flexible pipe 54 is installed at the top of the hydrocyclone separator 52, and the feed cover 55 is installed at the bottom of the other end of the flexible pipe 54. The support bracket 56 is detachably installed at the bottom of the feed cover 55 and is also installed at the top of the filter cartridge 57. The support bracket 56 is provided with an installation groove 3, and the filter bag 58 is detachably installed in the installation groove 3. One end of the pipe 59 is installed at the bottom of the filter cartridge 57, and the other end of the pipe 59 is installed at the feed inlet of the vessel body 21.
[0030] First, the solvent is introduced into the hydrocyclone 52. The hydrocyclone 52 separates the input solvent by swirling, removing most of the solid impurities. The collection box 53 stores the solid impurities. Then, the solvent enters the filter bag 58, which filters the solvent. The filtered solvent is then introduced into the first vessel 21 through pipe 49. Next, the electric heater 24 is turned on to heat the first vessel 21 and the second vessel 22. At the same time, the motor 36 is turned on, providing power. The power is transmitted through the reducer 35, belt 34, pulley 23, and pulley 132 to drive the stirring shaft 31 to rotate and stir the solvent inside the first vessel 21 and the second vessel 22, which can improve the uniformity of solvent heating. After the solvent inside the first vessel 21 evaporates, it first enters the pipe 41. The long and winding pipe 41 cools the steam, causing most of the solvent to fall back into the vessel body 21, thus improving the purity of solvent separation. The heat dissipation fins 44 dissipate heat from the pipe 41. The reducing joint 42 and the pipe 43 work together to expand the volume of the steam at this point, causing the steam to condense quickly and reducing the amount of steam that overflows directly from the evaporation port 2 of the vessel body 22, thus improving the purity of solvent separation. Then, the solvent inside the vessel body 22 evaporates into the pipe 46. In the rising section of the pipe 46, the heat dissipation fins 48 dissipate heat from the pipe 46, cooling the steam and causing most of the solvent to fall back into the vessel body 22, thus improving the purity of solvent separation. In the descending section of the pipe 46, the heat dissipation water jacket 47 dissipates heat from the pipe 46 quickly, causing the steam to condense completely at this point, facilitating the separation of the solvent into the storage tank 45 for storage.
[0031] Example 2:
[0032] like Figure 4 As shown, based on Embodiment 1, the bottom of the inner interior of the first vessel body 21 and the second vessel body 22 is also provided with a plurality of columnar protrusions of the same material.
[0033] like Figures 1 to 7As shown, this utility model discloses a solvent recovery device for cellulose ether production. During operation, the solvent is first introduced into a hydrocyclone 52. The hydrocyclone 52 separates the input solvent through its own structure, removing most solid impurities. A collection box 53 stores the solid impurities. The solvent then enters a filter bag 58, which filters the solvent. The filtered solvent is then introduced into a vessel body 21 through a pipe 59. An electric heater 24 is then turned on to heat both vessel bodies 21 and 22. Simultaneously, a motor 36 is turned on, providing power. This power is transmitted through a reducer 35, a belt 34, a pulley 33, and a pulley 32, driving a stirring shaft 31 to rotate and stir the solvent inside the vessel bodies 21 and 22. This improves the uniformity of solvent heating. The columnar protrusions disrupt the swirling flow generated by the solvent during stirring, enhancing the stirring effect. Furthermore, the columnar protrusions, made of the same material, prevent electrochemical corrosion. Simultaneously, the contact area between the first vessel 21 and the second vessel 22 and the solvent is increased to improve heating efficiency. After the solvent inside the first vessel 21 evaporates, it first enters the first pipe 41. The long and tortuous first pipe 41 cools the steam, causing most of the solvent to fall back into the first vessel 21, thus improving the solvent separation purity. The first heat dissipation fin 44 dissipates heat from the first pipe 41. The reducing joint 42 and the second pipe 43 work together to expand the volume of the steam at this point, causing the steam to condense quickly and reducing the amount of steam that overflows directly from the evaporation port 2 of the second vessel 22, thus improving the solvent separation purity. Then, the solvent inside the second vessel 22 evaporates and enters the third pipe 46. In the rising section of the third pipe 46, the second heat dissipation fin 48 dissipates heat from the third pipe 46, cooling the steam and causing most of the solvent to fall back into the second vessel 22, thus improving the solvent separation purity. In the descending section of the third pipe 46, the heat dissipation water jacket 47 dissipates heat from the third pipe 46 quickly, causing the steam to condense completely at this point, facilitating the separation of the solvent to enter the storage tank 45 for storage.
[0034] The two electric heaters 24, pulley one 32, pulley two 33, multiple belts 34, motor 36, heat dissipation water jacket 47 and cyclone separator 52 of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.
[0035] The main functions achieved by this utility model are as follows: by setting up a filtration device 05, the solvent is subjected to secondary grade filtration, reducing the amount of impurities entering the machine and improving the recovery efficiency; and by setting up a distillation device 02 and a condensation collection device 04 in conjunction to perform secondary grade distillation separation and recovery of the solvent, the separation rate is improved, thereby improving the recovery efficiency. This solves the existing technical problems that the existing machines have poor filtration capabilities for solid impurities, which easily allow a large number of solid impurities to enter the inside of the vessel, resulting in low recovery efficiency, and that the existing machines only separate and recover the solvent through a single distillation, resulting in a low separation rate and poor recovery effect.
[0036] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A solvent recovery device for cellulose ether production, comprising a main body (01); characterized in that, It also includes a distillation apparatus (02), a stirring apparatus (03), a condensation collection apparatus (04), and a filtration apparatus (05). The distillation apparatus (02) is mounted on the machine body (01), the stirring apparatus (03) is mounted on both the machine body (01) and the distillation apparatus (02), and the condensation collection apparatus (04) and the filtration apparatus (05) are both mounted on the distillation apparatus (02). The machine body (01) provides support. The distillation apparatus (02) holds and heats the solvent. The stirring apparatus (03) stirs the solvent. The condensation collection apparatus (04) condenses, separates, and stores the solvent vapor. The filtration apparatus (05) filters the solvent entering the machine.
2. The solvent recovery device for cellulose ether production as described in claim 1, characterized in that, The body (01) includes a first bracket (11) and a second bracket (12). Two mounting platforms are evenly spaced on the first bracket (11). The second bracket (12) is mounted on the first bracket (11) and is located between the two mounting platforms of the first bracket (11).
3. A solvent recovery device for cellulose ether production as described in claim 2, characterized in that, The distillation apparatus (02) includes a first vessel body (21), a second vessel body (22), two pipe covers (23) and two electric heaters (24). The first vessel body (21) and the second vessel body (22) are respectively mounted on two mounting platforms of the first bracket (11). The bottom of the first vessel body (21) and the second vessel body (22) are respectively provided with a discharge port. The top of the first vessel body (21) is provided with a first feed port, a first evaporation port and a first mounting groove. The bottom of the second vessel body (22) is also provided with a second mounting groove. The top of the second vessel body (22) is provided with a second feed port and a second evaporation port. The two pipe covers (23) are respectively installed at the two discharge ports of the first vessel body (21) and the second vessel body (22). The two electric heaters (24) are respectively installed at the lower part of the first vessel body (21) and the second vessel body (22).
4. A solvent recovery device for cellulose ether production as described in claim 3, characterized in that, The bottom of the inner part of the first (21) and the second (22) vessel bodies are also provided with multiple columnar protrusions of the same material.
5. A solvent recovery device for cellulose ether production as described in claim 4, characterized in that, The stirring device (03) includes a stirring shaft (31), a pulley one (32), a pulley two (33), multiple belts (34), a reducer (35), and a motor (36). The stirring shaft (31) is rotatably installed in the mounting groove one of the vessel body one (21) and the mounting groove two of the vessel body two (22). The pulley one (32) is fixedly mounted on the stirring shaft (31), and the pulley one (32) is located between the vessel body one (21) and the vessel body two (22). The pulley two (33) is fixedly mounted on the stirring shaft (31). 33) Rotatably mounted on the top of the second bracket (12), multiple belts (34) are respectively mounted on the first pulley (32) and the second pulley (33), the reducer (35) is fixedly mounted on the bottom of the second bracket (12), and the reducer (35) passes through the second bracket (12) and the second pulley (33) for rotational connection, the motor (36) is fixedly mounted on the bottom of the feed cover (55), and the motor (36) provides power to the second pulley (33) through the reducer (35).
6. A solvent recovery device for cellulose ether production as described in claim 5, characterized in that, The condensation collection device (04) includes a first pipe (41), a reducing joint (42), a second pipe (43), multiple heat dissipation fins (44), a storage tank (45), a third pipe (46), a heat dissipation water jacket (47), and multiple second heat dissipation fins (48). One end of the first pipe (41) is installed at the evaporation port of the first vessel (21), and the reducing joint (42) is connected to the bottom end of the other end of the first pipe (41). One end of the second pipe (43) is installed at the bottom end of the reducing joint (42), and the other end of the second pipe (43) is installed at the feed inlet of the second vessel (22). The diameter of the second pipe (43) is much larger than that of the first pipe. (41) The pipe diameter, multiple heat dissipation fins (44) are evenly spaced on the pipe (41), the storage tank (45) is installed on the ground, one end of the pipe (46) is installed on the top of the storage tank (45), and the other end of the pipe (46) is installed at the evaporation port of the vessel (22). The pipe (46) is arranged in an upward pointed mountain shape between the storage tank (45) and the vessel (22). The heat dissipation water jacket (47) is installed on the inclined part of the pipe (46) near the storage tank (45), and multiple heat dissipation fins (48) are evenly spaced on the inclined part of the pipe (46) near the vessel (22).
7. A solvent recovery device for cellulose ether production as described in claim 6, characterized in that, The filtration device (05) includes two sets of support brackets (51), a hydrocyclone separator (52), a collection box (53), a flexible pipe (54), a feed cover (55), a support bracket (56), a filter cartridge (57), a filter bag (58), and a pipe (59). Both sets of support brackets (51) are installed on the ground. The hydrocyclone separator (52) and the filter cartridge (57) are respectively installed on the two sets of support brackets (51). The collection box (53) is installed at the bottom of the hydrocyclone separator (52). The flexible pipe (54) One end is installed at the top of the hydrocyclone separator (52), the feed cover (55) is installed at the bottom of the other end of the flexible pipe (54), the bracket four (56) is detachably installed at the bottom of the feed cover (55), and the bracket four (56) is installed at the top of the filter cartridge (57). The bracket four (56) is provided with the installation groove three, the filter bag (58) is detachably installed in the installation groove three, one end of the pipe four (59) is installed at the bottom of the filter cartridge (57), and the other end of the pipe four (59) is installed at the feed inlet of the reactor body one (21).