A wastewater purification equipment for coking VOCs treatment project

Abstract

The present invention is a sewage purification equipment for a coking VOCs treatment project, which relates to the technical field of sewage purification equipment, including a main and auxiliary rack, a water delivery bucket in the main rack is provided with a sewage inlet pipe and a steam inlet pipe, the interior of the water delivery bucket is provided with first, second and third guide tubes, the first sewage outlet pipe at the bottom of the water delivery bucket is connected to a heating box, an electric heating pipe is provided in the heating box, the heating box is provided with a second sewage outlet pipe, a benzene series delivery pipe, and an alkane delivery pipe, the benzene series delivery pipe and the alkane delivery pipe are respectively connected with a first condenser and a second condenser, and a first cavity and a second cavity are provided in a storage box on the side of the heating box, the first cavity and the second cavity are connected with a benzene series output pipe and an alkane output pipe. The present invention can recycle alkanes and benzene series in sewage generated by VOCs treatment projects, which can reduce pollution to the atmosphere, water bodies and soil on the one hand, and effectively save resources and improve economic benefits on the other hand.

Description

Technical Field

[0001] The invention relates to the technical field of sewage purification equipment, and specifically discloses sewage purification equipment for a coking VOCs treatment project. Background Art

[0002] Coking VOCs treatment project is a complex system project. Through a variety of measures, the emission of volatile organic compounds (VOCs) can be effectively reduced and controlled to ensure environmental safety and economic benefits. Coking VOCs treatment project involves many aspects, including process transformation, equipment upgrade and management optimization, so as to ensure the treatment effect. The core of coking VOCs treatment project is mainly: identification of pollution sources and types of VOCs, selection of appropriate treatment technology, equipment selection and operation and maintenance, source reduction, process control, end-of-pipe treatment, etc. A small amount of sewage will be generated in the coking VOCs treatment project.

[0003] The invention with application announcement number: CN117902741A discloses a VOCs sewage purification device with biological treatment function. In the prior art, the mixing blades on the stirring shaft are driven to rotate by the rotating shaft, which can improve the mixing effect of the flocculant and the sewage, and then more impurities in the sewage can be settled to the bottom of the purification box, and the mixing effect can be further improved by exposing the gas, thereby improving the purification effect of the VOCs sewage. The invention with application announcement number: CN114133107A discloses a VOCs sewage treatment process. The prior art can shorten the purification treatment time by adjusting the gas-water ratio of the aeration treatment, and can accelerate the sedimentation speed by adding polyacrylamide, further improving the efficiency of sewage treatment.

[0004] The above-mentioned existing technologies are all related to the treatment technology of precipitated impurities in VOCs wastewater, but coking VOCs wastewater also contains volatile organic compounds, odorous gases and nitrogen-containing pollutants, among which volatile organic compounds are mainly alkanes and benzene series (benzene, toluene, xylene, etc.), and alkanes and benzene series can be recycled for secondary recovery through condensation. It can be seen that the existing VOCs wastewater purification equipment is not equipped with recovery and treatment equipment for alkanes and benzene series. Most of these volatile organic compounds are directly discharged into the air, which can not only pollute the atmosphere, water bodies and soil, but also be difficult to recycle and treat in time, causing the company to lose some economic benefits. Summary of the invention

[0005] In view of the problems of high pollution degree and poor secondary recovery rate in current VOCs wastewater purification equipment, the present invention provides a wastewater purification equipment for coking VOCs treatment project.

[0006] To solve the above problems, the present invention provides the following technical solutions:

[0007] A wastewater purification device for a coking VOCs treatment project comprises a main frame and an auxiliary frame, wherein a steam generator is fixedly installed in the auxiliary frame, wherein the steam generator is provided with two steam outlets and respectively connected with a first steam delivery pipe and a second steam delivery pipe; wherein a water delivery bucket is fixedly installed in the main frame, wherein a sewage inlet pipe for conveying sewage is provided on one side of the top of the water delivery bucket, wherein a steam inlet pipe connected with the first steam delivery pipe is provided on the other side of the top of the water delivery bucket, wherein a first guide tube, a second guide tube and a third guide tube connected in sequence are provided inside the water delivery bucket, wherein the first guide tube is connected with the sewage inlet pipe, wherein the third guide tube is connected with the inner cavity of the water delivery bucket, wherein the steam inlet pipe is connected with the first guide tube, the second guide tube and the third guide tube, wherein a first sewage outlet pipe is provided at the bottom of the water delivery bucket, wherein the first sewage outlet pipe is connected with A heating box is provided, which is arranged on the side of the water delivery barrel and is tightly connected to the main stand. A plurality of electric heating tubes for heating sewage are arranged in the heating box. The inner cavity of the heating box is connected to the second steam delivery pipe. A second sewage outlet pipe is arranged at the side bottom of the heating box. A benzene delivery pipe and an alkane delivery pipe are arranged on the side top of the heating box from bottom to top. The benzene delivery pipe and the alkane delivery pipe are respectively connected to the first condenser and the second condenser. A storage box is provided on the side of the heating box. A first cavity and a second cavity are arranged in the storage box. The first cavity and the second cavity are respectively connected to the first condenser and the second condenser through pipes. A benzene output pipe and an alkane output pipe are respectively arranged on the side bottoms of both sides of the storage box. The benzene output pipe and the alkane output pipe are respectively connected to the first cavity and the second cavity.

[0008] Preferably, the outlet end of the first steam delivery pipe is connected to the first guide pipe, a first ball valve is installed between the first guide pipe and the first steam delivery pipe, the outlet end of the first guide pipe is respectively connected to the second guide pipe and the third guide pipe, the outlet ends of the second guide pipe and the third guide pipe are respectively installed with the first steam regulating valve and the second steam regulating valve, the first steam regulating valve and the second steam regulating valve are both adjusted by the first motor, the first steam regulating valve, the second steam regulating valve and the first motor are all fastened to the main stand, and the outlet ends of the first steam regulating valve and the second steam regulating valve are both connected to the steam inlet pipe through pipelines.

[0009] Preferably, the inlet ends of the first flow guide tube, the second flow guide tube and the third flow guide tube are all arranged on the side wall, the outlet ends of the first flow guide tube, the second flow guide tube and the third flow guide tube are all arranged downward, the first flow guide tube, the second flow guide tube and the third flow guide tube are connected in sequence through a folded tube, the folded tube opening at the outlet end of the third flow guide tube is arranged obliquely, and the first flow guide tube, the second flow guide tube and the third flow guide tube are respectively provided with a rotatable first rotating shaft, a second rotating shaft and a third rotating shaft, and the outer walls of the first rotating shaft, the second rotating shaft and the third rotating shaft are fixedly mounted with fan blades; the end of the steam inlet pipe is connected to a four-way pipe, and the three outlet ends of the four-way pipe are respectively arranged inside the first flow guide tube, the second flow guide tube and the third flow guide tube.

[0010] Preferably, the tops of the first rotating shaft, the second rotating shaft and the third rotating shaft are rotatably mounted with the first transmission shaft, the second transmission shaft and the third transmission shaft, the outer walls of the first transmission shaft, the second transmission shaft and the third transmission shaft are respectively fixedly mounted with the first gear disc, the second gear disc and the third gear disc, the first gear disc, the second gear disc and the third gear disc are all arranged above the water conveying bucket, a rod seat is fixedly mounted on the top of the water conveying bucket, a rotating rod is rotatably mounted on the rod seat, the outer wall of the rotating rod is fixedly mounted with the first worm gear, the second worm gear and the third worm gear, the first worm gear, the second worm gear and the third worm gear are respectively matched with the first gear disc, the second gear disc and the third gear disc for transmission.

[0011] Preferably, a support is fixedly installed on the top of the water delivery bucket, a cross bar is fixedly installed on the bottom of the support, a vertical bar is installed on the internal thread of the cross bar, the top of the vertical bar is hinged to a machine base, the machine base is arranged above the support and one end is hinged to the support, a second motor is fixedly installed on the machine base, the output shaft of the second motor is connected to an extension rod through a coupling, the end of the extension rod is fixedly mounted with a first belt pulley, the end of the rotating rod is fixedly mounted with a second belt pulley, and a leather strip for transmission is mounted between the first belt pulley and the second belt pulley.

[0012] Preferably, the outlet end of the first sewage outlet pipe is arranged inside the heating box with its opening facing downward, the second steam delivery pipe is arranged close to the first sewage outlet pipe, a second ball valve is installed on the pipeline of the second steam delivery pipe, and the outlet end of the second steam delivery pipe is arranged above the outlet end of the first sewage outlet pipe. A plurality of support plates are fixedly installed on the side wall of the heating box, the outer tube wall of the electric heating tube is fastened to the support plate by a nut, the electric heating tube is arranged at the bottom of the heating box, and a wiring terminal is provided on the outer end face of the electric heating tube, a protective shell is provided around the outer periphery of the support plate, the protective shell is fastened to the outer wall of the heating box, and a plug-in terminal is provided on the outer side of the protective shell.

[0013] Preferably, the pipeline inlets of the benzene delivery pipe and the alkane delivery pipe are both arranged in the inner cavity of the heating box, and the pipeline inlets of the benzene delivery pipe and the alkane delivery pipe are both arranged on a side close to the storage box. The pipeline inlet arrangement height of the benzene delivery pipe is higher than the outlet height of the first sewage outlet pipe, and the pipeline inlet height of the alkane delivery pipe is higher than the pipeline inlet height of the benzene delivery pipe.

[0014] Preferably, a benzene delivery regulating valve is fixedly installed on the pipeline of the benzene delivery pipe, and an alkane delivery regulating valve is fixedly installed on the pipeline of the alkane delivery pipe. The benzene delivery regulating valve and the alkane delivery regulating valve are both driven and regulated by a third motor, and the benzene delivery regulating valve, the alkane delivery regulating valve and the third motor are all fastened to the top of the heating box.

[0015] Preferably, a first slow-flow tube is installed on the pipeline of the benzene-related substance delivery pipe, a second slow-flow tube is installed on the pipeline of the alkane delivery pipe, a first flow valve is fixedly installed at the outlet end of the benzene-related substance delivery pipe, a first pipe pressure sensor is fixedly installed on the top of the first flow valve, a second flow valve is fixedly installed at the outlet end of the alkane delivery pipe, a second pipe pressure sensor is fixedly installed on the bottom of the second flow valve, a meter stand is installed on the side of the heating box, a first pressure gauge and a second pressure gauge are fixedly installed on the meter stand, and the first pressure gauge and the second pressure gauge are respectively connected to the first pipe pressure sensor and the second pipe pressure sensor line.

[0016] Preferably, a partition is fixedly installed in the storage box, the first cavity and the second cavity are respectively arranged on both sides of the partition, the benzene output pipe and the alkane output pipe are both arranged on the side close to the first condenser and the second condenser, and the third ball valve and the fourth ball valve are respectively installed on the pipelines of the benzene output pipe and the alkane output pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The steam generator in the present invention can continuously deliver high-temperature steam to the water delivery barrel and the heating box. The sewage generated by the coking VOCs treatment project can be preliminarily mixed with the high-temperature steam in the first guide tube, the second guide tube, and the third guide tube, and deeply mixed and heated with the high-temperature steam in the heating box through the electric heating tube, so as to quickly increase the temperature of the sewage in the heating box, so that the alkanes and benzene series in the sewage are converted into a gaseous structure, and at the same time, they are respectively present in the upper layer and the middle layer of the inner cavity of the heating box. Finally, by setting the first condenser and the second condenser, they are restored to a liquefied state, so as to complete the secondary recovery. The present invention can perform secondary recovery on the alkanes and benzene series in the sewage generated by the VOCs treatment project, which can reduce the pollution to the atmosphere, water bodies and soil on the one hand, and effectively save resources and improve economic benefits on the other hand;

[0019] 2. In the present invention, by setting the linkage structure of the first worm, the second worm, the third worm and the first toothed disc, the second toothed disc and the third toothed disc, a transmission matching structure can be formed. On the one hand, the coordination between the various rotating shafts can be improved, so that the fan blades can form vortices in the sewage in each guide tube, thereby increasing the contact area between the high-temperature water vapor and the sewage, thereby accelerating the heating rate. On the other hand, the rotation speed of each rotating shaft can be adjusted at the same time, thereby enhancing the coordination of the overall regulation, avoiding structural resonance, and reducing the energy consumption of the overall equipment;

[0020] 3. The present invention sets a first motor, a second motor and a third motor, so that the first motor controls the flow rate of the first steam regulating valve and the second steam regulating valve, the second motor controls the flow rate of sewage in the water transfer bucket, and the third motor controls the flow rate of the benzene delivery regulating valve and the alkane delivery regulating valve, so that the high-temperature steam, sewage, alkanes and benzene series in each pipeline of the overall equipment form a linkage and coordination with each other to ensure that the flow rate is within a reasonable range, which can not only enhance the safety of the overall equipment, but also improve the coordination of the overall equipment and ensure the safe operation of the overall equipment. Therefore, it has a very broad application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a schematic diagram of the overall device structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the arrangement and installation structure of the first steam regulating valve and the second steam regulating valve of the present invention;

[0024] Figure 3 This is a schematic diagram of the second motor installation structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the leather strap installation structure of the present invention;

[0026] Figure 5 It is a schematic diagram of the installation structure of the first guide tube, the second guide tube, and the third guide tube of the present invention;

[0027] Figure 6 It is a schematic diagram of the installation structure of the first toothed disc, the second toothed disc and the third toothed disc of the present invention;

[0028] Figure 7It is a schematic diagram of the installation structure of the first worm, the second worm and the third worm of the present invention;

[0029] Figure 8 It is a schematic diagram of the machine base installation structure of the present invention;

[0030] Fig. 9 It is a schematic diagram of the internal structure of the heating box of the present invention;

[0031] Fig.10 It is a schematic diagram of the wiring terminal structure of the present invention;

[0032] Fig.11 This is a schematic diagram of the installation structure of the first condenser and the second condenser of the present invention;

[0033] Fig.12 It is a schematic diagram of the installation structure of the first pressure gauge and the second pressure gauge of the present invention;

[0034] Fig.13 It is a schematic diagram of the partition structure of the present invention;

[0035] In the figure: 1. Main rack, 2. Auxiliary rack, 3. Steam generator, 4. First steam delivery pipe, 5. Second steam delivery pipe, 6. Water delivery bucket, 7. Sewage inlet pipe, 8. Steam inlet pipe, 9. First guide tube, 10. Second guide tube, 11. Third guide tube, 12. First sewage outlet pipe, 13. Heating box, 14. Electric heating tube, 15. Second sewage outlet pipe, 16. Benzene delivery pipe, 17. Alkane delivery pipe, 18. First condenser, 19. Second condenser, 20. Storage box, 21. First cavity, 22. Second cavity, 23. Benzene output pipe, 24. Alkane output pipe, 25. First guide pipe, 26. First ball valve, 27. Second guide pipe, 28. Third guide pipe, 29. First steam regulating valve, 30. Second steam regulating valve, 31. First motor, 32. Folding pipe, 33. First rotating shaft, 34. Second rotating shaft, 35. Third rotating shaft, 36. Fan blade, 37. Cross pipe, 38. First transmission shaft, 39 .Second transmission shaft, 40. Third transmission shaft, 41. First gear plate, 42. Second gear plate, 43. Third gear plate, 44. Rod seat, 45. Rotating rod, 46. First worm gear, 47. Second worm gear, 48. Third worm gear, 49. Support, 50. Cross bar, 51. Vertical bar, 52. Machine base, 53. Second motor, 54. Coupling, 55. Extension rod, 56. First belt pulley, 57. Second belt pulley, 58. Leather strip, 59. Second ball valve, 60. Support plate , 61. Wiring terminal, 62. Protective shell, 63. Plug terminal, 64. Benzene delivery regulating valve, 65. Alkane delivery regulating valve, 66. The third motor, 67. The first slow-flow tube, 68. The second slow-flow tube, 69. The first flow valve, 70. The first pipe pressure sensor, 71. The second flow valve, 72. The second pipe pressure sensor, 73. The meter stand, 74. The first pressure gauge, 75. The second pressure gauge, 76. The partition, 77. The third ball valve, 78. The fourth ball valve. DETAILED DESCRIPTION

[0036] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below 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.

[0037] This specific implementation provides a coking VOCs treatment project wastewater purification equipment, such as Figure 1-Figure 13As shown; it includes a main frame 1, and an auxiliary frame 2 is arranged on the side of the main frame 1. The size structure of the main frame 1 is larger than that of the auxiliary frame 2. The main frame 1 is fastened to the auxiliary frame 2 to form an integrated structure. A steam generator 3 is fixedly installed in the auxiliary frame 2. The steam generator 3 can generate high-temperature water vapor by adding water and heating. Two steam outlets are arranged on the top of the steam generator 3 and are respectively connected to a first steam delivery pipe 4 and a second steam delivery pipe 5. A water delivery bucket 6 is fixedly installed in the main frame 1. The water delivery bucket 6 is a bucket-shaped structure, and its bottom diameter is smaller than the top diameter. A sewage inlet pipe 7 for conveying sewage is arranged on one side of the top of the water delivery bucket 6. The sewage generated in the VOCs treatment project can enter the inner cavity of the water delivery bucket 6 through the sewage inlet pipe 7. A steam inlet pipe 8 connected to the first steam delivery pipe 4 is arranged on the other side of the top of the water delivery bucket 6. The high-temperature water vapor generated in the steam generator 3 can enter the inner cavity of the water delivery bucket 6 through the steam inlet pipe 8.

[0038] The outlet end of the first steam delivery pipe 4 is connected to a first guide pipe 25, and a first ball valve 26 is installed between the first guide pipe 25 and the first steam delivery pipe 4. The first ball valve 26 can be used to control the on-off of the first guide pipe 25, so as to further control the flow rate of the high-temperature water vapor in the steam inlet pipe 8. The outlet end of the first guide pipe 25 is respectively connected to a second guide pipe 27 and a third guide pipe 28, and the second guide pipe 27 and the third guide pipe 28 are two branches of the first guide pipe 25. The outlet ends of the second guide pipe 27 and the third guide pipe 28 are respectively installed with a first steam regulating valve 29 and a second steam regulating valve 30; the first steam regulating valve 29 can be used to control the flow rate of the high-temperature water vapor in the second guide pipe 27, and the second steam regulating valve 30 can be used to control the flow rate of the high-temperature water vapor in the third guide pipe 28, so as to increase the flow rate in the second guide pipe 27 and the third guide pipe 28. The first steam regulating valve 29 and the second steam regulating valve 30 are both driven and adjusted by the first motor 31. The first steam regulating valve 29, the second steam regulating valve 30 and the first motor 31 are all fastened to the main frame 1. The outlet ends of the first steam regulating valve 29 and the second steam regulating valve 30 are connected to the steam inlet pipe 8 through pipelines. The steam inlet pipe 8 is arranged vertically, and the port at the bottom is connected to the outlet ends of the first steam regulating valve 29 and the second steam regulating valve 30, and the port at the top directly extends into the inner cavity of the water delivery bucket 6. By setting the first steam regulating valve 29 and the second steam regulating valve 30, not only the circulation rate of high-temperature water vapor can be controlled, but also the circulation of high-temperature water vapor can be further accelerated, so that the high-temperature water vapor enters the inner cavity of the water delivery bucket 6 at a higher flow rate, so as to be fully mixed with sewage.

[0039] The interior of the water delivery barrel 6 is provided with a uniformly arranged first guide tube 9, a second guide tube 10, and a third guide tube 11, the inlet ends of the first guide tube 9, the second guide tube 10, and the third guide tube 11 are all provided on the side wall, and the outlet ends of the first guide tube 9, the second guide tube 10, and the third guide tube 11 are all arranged downward, and the first guide tube 9, the second guide tube 10, and the third guide tube 11 are sequentially connected through a folded tube 32, and the first guide tube 9 is connected to the sewage inlet pipe 7 through the folded tube 32, so that the sewage passes through the first guide tube 9, the second guide tube 10, and the third guide tube 11 in sequence and flows into the inner cavity of the water delivery barrel 6. Among them, the opening of the folded tube 32 at the outlet end of the third guide tube 11 is arranged obliquely, which can reduce the impact of sewage on the inner wall of the water delivery barrel 6, thereby improving the service life of the water delivery barrel 6 and reducing noise at the same time.

[0040] A rotatable first shaft 33, a second shaft 34, and a third shaft 35 are respectively provided in the first guide tube 9, the second guide tube 10, and the third guide tube 11. Fan blades 36 are fixedly mounted on the outer walls of the first shaft 33, the second shaft 34, and the third shaft 35, and the fan blades 36 can rotate together with each shaft; a four-way pipe 37 is connected to the end of the steam inlet pipe 8, and the four-way pipe 37 is provided with a steam inlet port on the top and three steam outlet ports on the bottom. The three steam outlet ports at the bottom are respectively arranged inside the first guide tube 9, the second guide tube 10, and the third guide tube 11. By providing the four-way pipe 37, the high-temperature water vapor can be directly guided to the first guide tube 9, the second guide tube 10, and the third guide tube 11, respectively, so as to be fully mixed with the sewage in each guide tube.

[0041] The first rotating shaft 33, the second rotating shaft 34, and the third rotating shaft 35 are rotatably mounted on the top of the first rotating shaft 33, the second rotating shaft 34, and the third rotating shaft 35. The outer walls of the first transmitting shaft 38, the second transmitting shaft 39, and the third transmitting shaft 40 are all rotatably matched with the top cover of the water conveying bucket 6. The outer walls of the first transmitting shaft 38, the second transmitting shaft 39, and the third transmitting shaft 40 are respectively fixedly mounted with a first toothed disc 41, a second toothed disc 42, and a third toothed disc 43. The first toothed disc 41, the second toothed disc 42, and the third toothed disc 43 are all arranged above the water conveying bucket 6. A rod seat 44 is fixedly installed on the top of the water delivery bucket 6, and a rotating rod 45 is rotatably installed on the rod seat 44. A first worm 46, a second worm 47, and a third worm 48 are fixedly mounted on the outer wall of the rotating rod 45. The first worm 46, the second worm 47, and the third worm 48 are respectively matched with the first toothed disc 41, the second toothed disc 42, and the third toothed disc 43 in transmission. By setting the transmission matching structure of the worm and the toothed disc, on the one hand, the coordination between the various rotating shafts can be improved, and on the other hand, the rotation speed of each rotating shaft can be adjusted at the same time, thereby enhancing the coordination of the overall regulation.

[0042] A support 49 is fixedly installed on the upper part of the top cover of the water delivery bucket 6, and the support 49 is arranged between the first toothed disc 41 and the second toothed disc 42. A cross bar 50 is fixedly installed on the inner side of the bottom of the support 49, and a vertical opening is arranged in the cross bar 50, and a vertical rod 51 is threadedly installed in the opening, and the vertical rod 51 can be further adjusted by screwing the thread to adjust the arrangement height of the vertical rod 51; the top of the vertical rod 51 is hinged with a base 52 through a pin shaft, and the base 52 is arranged above the support 49 and one end is hinged to the support 49; a second motor 53 is fixedly installed on the base 52, and the output shaft of the second motor 53 is connected to an extension rod 55 through a coupling 54, and the end of the extension rod 55 is fixedly covered with a first belt pulley 56, and the end of the rotating rod 45 is fixedly covered with a second belt pulley 57, and a leather strip 58 for transmission is covered between the first belt pulley 56 and the second belt pulley 57. By setting the matching structure of the vertical rod 51 and the base 52, the layout position of the second motor 53 can be adjusted, so as to adjust the distance between the first belt pulley 56 and the second belt pulley 57, thereby controlling the tension of the belt 58 and matching the transmission ratio of the belt 58 with the transmission efficiency between each gear disc.

[0043] A first sewage outlet pipe 12 is provided at the bottom of the water delivery bucket 6. The first sewage outlet pipe 12 is connected to a heating box 13. The heating box 13 is arranged on the side of the water delivery bucket 6 and is tightly connected to the main stand 1. The first sewage outlet pipe 12 can transfer the sewage in the inner cavity of the water delivery bucket 6 to the heating box 13. The outlet end of the first sewage outlet pipe 12 is arranged inside the heating box 13 and the opening is arranged downward. The second steam delivery pipe 5 is connected to the heating box 13. The second steam delivery pipe 5 can deliver high-temperature water vapor to the heating box 13. The second steam delivery pipe 5 is arranged close to the first sewage outlet pipe 12. A second ball valve 59 is installed on the pipeline of the second steam delivery pipe 5. The second ball valve 59 can be used to control the flow rate of high-temperature water vapor in the second steam delivery pipe 5. The outlet end of the second steam delivery pipe 5 is arranged above the outlet end of the first sewage outlet pipe 12. A plurality of support plates 60 are fixedly installed on the side wall of the heating box 13. The support plates 6 0 is fixedly installed on the inner side, the electric heating tube 14 is arranged inside the heating box 13, the outer tube wall of the electric heating tube 14 is fastened to the support plate 60 through a nut, the electric heating tube 14 is arranged at the bottom of the heating box 13, and the outer end face of the electric heating tube 14 is provided with a wiring terminal 61, and the outer periphery of the support plate 60 is provided with a protective shell 62, the protective shell 62 is fastened to the outer wall of the heating box 13, and the outer side of the protective shell 62 is provided with a plug-in terminal 63; by providing the plug-in terminal 63 and the wiring terminal 61, an external power supply device can provide electric energy to the electric heating tube 14, so that the outer wall of the electric heating tube 14 is quickly heated up, so as to heat the sewage.

[0044] A second sewage outlet pipe 15 is provided at the bottom of the side of the heating box 13, and the sewage in the heating box 13 can flow to the outside through the second sewage outlet pipe 15; a benzene delivery pipe 16 and an alkane delivery pipe 17 are sequentially provided at the top of the side of the heating box 13 from bottom to top; the pipe inlets of the benzene delivery pipe 16 and the alkane delivery pipe 17 are both arranged in the inner cavity of the heating box 13, and the pipe inlets of the benzene delivery pipe 16 and the alkane delivery pipe 17 are both arranged on a side close to the storage box 20, and the pipe inlet arrangement height of the benzene delivery pipe 16 is higher than the outlet height of the first sewage outlet pipe 12, and the pipe inlet height of the alkane delivery pipe 17 is higher than the pipe inlet height of the benzene delivery pipe 16. The sewage in the heating box 13 can convert the volatile organic compounds (alkanes and benzene series) contained therein into gaseous structures under the action of high temperature heating. Since the density of benzene series is greater than that of alkanes, gaseous alkanes will exist at the top of the heating box 13, and gaseous benzene series will exist below the alkanes.

[0045] The benzene series delivery pipe 16 and the alkane delivery pipe 17 are connected to the first condenser 18 and the second condenser 19 respectively; a benzene series delivery regulating valve 64 is fixedly installed on the pipeline of the benzene series delivery pipe 16, and an alkane delivery regulating valve 65 is fixedly installed on the pipeline of the alkane delivery pipe 17. The benzene series delivery regulating valve 64 and the alkane delivery regulating valve 65 are both driven and regulated by the third motor 66. The benzene series delivery regulating valve 64, the alkane delivery regulating valve 65 and the third motor 66 are all fastened to the top of the heating box 13; by setting the benzene series delivery regulating valve 64 and the alkane delivery regulating valve 65, the delivery rate of the benzene series delivery pipe 16 and the alkane delivery pipe 17 can be controlled, thereby coordinating with the sewage circulation rate of the overall equipment, thereby improving the coordination of the overall equipment.

[0046] A first slow-flow tube 67 is installed on the pipeline of the benzene delivery pipe 16, and a second slow-flow tube 68 is installed on the pipeline of the alkane delivery pipe 17. The first slow-flow tube 67 and the second slow-flow tube 68 can be used to relieve the air pressure in the benzene delivery pipe 16 and the alkane delivery pipe 17, thereby improving the safety of the overall equipment. A first flow valve 69 is fixedly installed at the outlet end of the benzene delivery pipe 16, and a first pipe pressure sensor 70 is fixedly installed on the top of the first flow valve 69. A second flow valve 71 is fixedly installed at the outlet end of the alkane delivery pipe 17, and a second pipe pressure sensor 72 is fixedly installed at the bottom of the second flow valve 71. A meter stand 73 is installed on the side of the heating box 13, and a first pressure gauge 74 and a second pressure gauge 75 are fixedly installed on the meter stand 73. The first pressure gauge 74 and the second pressure gauge 75 are connected to the first pipe pressure sensor 70 and the second pipe pressure sensor 72 respectively. By providing the first pressure gauge 74 and the second pressure gauge 75, the pressure at the outlet end can be fed back in real time, thereby facilitating safety monitoring.

[0047] The side of the heating box 13 is provided with a storage box 20, and a partition 76 is fixedly installed in the storage box 20. The partition 76 divides the inner cavity of the storage box 20 into two cavities. The two sides of the partition 76 are respectively a first cavity 21 and a second cavity 22. The first cavity 21 and the second cavity 22 are respectively connected to the first condenser 18 and the second condenser 19 through pipes. The bottom of the two sides of the storage box 20 are respectively provided with a benzene output pipe 23 and an alkane output pipe 24. The benzene output pipe 23 and the alkane output pipe 24 are connected to the first cavity 21 and the second cavity 22 respectively; and the benzene output pipe 23 and the alkane output pipe 24 are both arranged on the side close to the first condenser 18 and the second condenser 19, and the third ball valve 77 and the fourth ball valve 78 are respectively installed on the pipelines of the benzene output pipe 23 and the alkane output pipe 24; the third ball valve 77 and the fourth ball valve 78 can be used to control the flow rate of the benzene output pipe 23 and the alkane output pipe 24.

[0048] The working principle of the present invention is:

[0049] The sewage generated in the coking VOCs treatment project can enter the water delivery barrel 6 through the sewage inlet pipe 7, and enter the inner cavity of the water delivery barrel 6 after passing through the first guide tube 9, the second guide tube 10, and the third guide tube 11 in sequence; during this period, the high-temperature water vapor generated by the steam generator 3 can enter the steam inlet pipe 8 at a high speed through the first guide pipe 25, the second guide pipe 27, and the third guide pipe 28, and through the action of the first steam regulating valve 29 and the second steam regulating valve 30. The high-temperature water vapor in the steam inlet pipe 8 enters the first guide tube 9, the second guide tube 10, and the third guide tube 11 respectively through the four-way pipe 37, so as to mix with the sewage flowing through, thereby preliminarily raising the temperature of the sewage; by setting the fan blades 36, the sewage can form a vortex in each guide tube, thereby increasing the contact area between the high-temperature water vapor and the sewage, thereby accelerating the heating rate. The second motor 53 can drive the rotating rod 45 to rotate, thereby causing the first worm 46, the second worm 47, and the third worm 48 to rotate together, and driving the first gear plate 41, the second gear plate 42, and the third gear plate 43 to rotate together, thereby accelerating the rotation of the fan blade 36, thereby increasing the sewage flow rate and the vortex speed.

[0050] The sewage initially mixed with the high-temperature steam enters the heating box 13 through the first sewage outlet pipe 12, and is rapidly heated by the electric heating tube. At the same time, the high-temperature steam is further sent to the heating box 13 through the second steam delivery pipe 5, thereby increasing the heating rate and converting the alkanes and benzene series in the sewage into gaseous structures. Since the density of benzene series is greater than that of alkanes, gaseous alkanes will exist at the top of the heating box 13, and gaseous benzene series will exist below the alkanes; the gaseous alkanes pass through the heating box 13. The gaseous benzene series enters the second condenser 19 through the alkane delivery pipe 17, and the gaseous benzene series enters the first condenser 18 through the benzene series delivery pipe 16, so as to be restored to liquefaction and enter the first cavity 21 and the second cavity 22 in the storage box 20, thereby gathering in the first cavity 21 and the second cavity 22, and the liquefied alkanes and benzene series flow out of the equipment through the alkane delivery pipe 17 and the benzene series delivery pipe 16 respectively, and enter the corresponding storage containers, thereby completing the secondary recovery process.

[0051] In the above process, the first motor 31, the second motor 53, and the third motor 66 form a linkage with each other, so as to further control the flow rate of high-temperature water vapor and various substances in the overall equipment, which can not only enhance the safety of the overall equipment, but also improve the coordination of the overall equipment.

[0052] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wastewater purification device for a coking VOCs treatment project, comprising a main frame (1) and an auxiliary frame (2), characterized in that: A steam generator (3) is fixedly installed in the auxiliary stand (2), and the steam generator (3) is provided with two steam outlets and respectively connected to a first steam delivery pipe (4) and a second steam delivery pipe (5); a water delivery bucket (6) is fixedly installed in the main stand (1), and a sewage inlet pipe (7) for conveying sewage is provided on one side of the top of the water delivery bucket (6), and a steam inlet pipe (8) connected to the first steam delivery pipe (4) is provided on the other side of the top of the water delivery bucket (6), and a first guide tube (9) connected in sequence is provided inside the water delivery bucket (6). (9), a second guide tube (10), and a third guide tube (11), wherein the first guide tube (9) is connected to the sewage inlet pipe (7), the third guide tube (11) is connected to the inner cavity of the water delivery bucket (6), the steam inlet pipe (8) is connected to the first guide tube (9), the second guide tube (10), and the third guide tube (11), the bottom of the water delivery bucket (6) is provided with a first sewage outlet pipe (12), the first sewage outlet pipe (12) is connected to a heating box (13), and the heating box (13) is arranged on the side of the water delivery bucket (6) and connected to the main stand. (1) are tightly connected, a plurality of electric heating pipes (14) for heating sewage are arranged in the heating box (13), the inner cavity of the heating box (13) is connected to the second steam delivery pipe (5), a second sewage outlet pipe (15) is arranged at the side bottom of the heating box (13), and a benzene series delivery pipe (16) and an alkane delivery pipe (17) are arranged at the side top of the heating box (13) from bottom to top, the benzene series delivery pipe (16) and the alkane delivery pipe (17) are connected to the first condenser (18) and the second condenser (19) respectively, and the heating box (13) is connected to the second condenser (19) and the second condenser (19) respectively. A storage box (20) is arranged on the side of the heat box (13), and a first cavity (21) and a second cavity (22) are arranged in the storage box (20), and the first cavity (21) and the second cavity (22) are respectively connected to the first condenser (18) and the second condenser (19) through pipes, and a benzene output pipe (23) and an alkane output pipe (24) are respectively arranged on the bottom of the two sides of the storage box (20), and the benzene output pipe (23) and the alkane output pipe (24) are respectively connected to the first cavity (21) and the second cavity (22).

2. A coking VOCs treatment project wastewater purification equipment according to claim 1, characterized in that: The outlet end of the first steam delivery pipe (4) is connected to a first guide pipe (25), a first ball valve (26) is installed between the first guide pipe (25) and the first steam delivery pipe (4), the outlet end of the first guide pipe (25) is connected to a second guide pipe (27) and a third guide pipe (28), respectively, the outlet ends of the second guide pipe (27) and the third guide pipe (28) are respectively installed with a first steam regulating valve (29) and a second steam regulating valve (30), the first steam regulating valve (29) and the second steam regulating valve (30) are both driven and adjusted by a first motor (31), the first steam regulating valve (29), the second steam regulating valve (30) and the first motor (31) are all fastened to the main frame (1), and the outlet ends of the first steam regulating valve (29) and the second steam regulating valve (30) are both connected to the steam inlet pipe (8) through pipelines.

3. A coking VOCs treatment project sewage purification equipment according to claim 2, characterized in that: The inlet ends of the first flow guide tube (9), the second flow guide tube (10), and the third flow guide tube (11) are all arranged on the side wall; the outlet ends of the first flow guide tube (9), the second flow guide tube (10), and the third flow guide tube (11) are all arranged downward; the first flow guide tube (9), the second flow guide tube (10), and the third flow guide tube (11) are connected in sequence via a folded tube (32); the folded tube (32) at the outlet end of the third flow guide tube (11) is arranged obliquely; the first flow guide tube (9), the second flow guide tube (10), and the third flow guide tube (11) are connected in sequence via a folded tube (32); the folded tube (32) at the outlet end of the third flow guide tube (11) is opened obliquely; A rotatable first rotating shaft (33), a second rotating shaft (34) and a third rotating shaft (35) are respectively arranged in the first guide tube (9), the second guide tube (10) and the third guide tube (11); and fan blades (36) are fixedly mounted on the outer walls of the first rotating shaft (33), the second rotating shaft (34) and the third rotating shaft (35); a four-way pipe (37) is connected to the end of the steam inlet pipe (8); and three outlet ends of the four-way pipe (37) are respectively arranged inside the first guide tube (9), the second guide tube (10) and the third guide tube (11).

4. A coking VOCs treatment project wastewater purification equipment according to claim 3, characterized in that: The first rotating shaft (33), the second rotating shaft (34) and the third rotating shaft (35) are rotatably mounted with a first transmission shaft (38), a second transmission shaft (39) and a third transmission shaft (40); the outer walls of the first transmission shaft (38), the second transmission shaft (39) and the third transmission shaft (40) are respectively fixedly mounted with a first toothed disc (41), a second toothed disc (42) and a third toothed disc (43); the first toothed disc (41), the second toothed disc (42) and the third toothed disc (43) are all arranged above the water delivery bucket (6); a rod seat (44) is fixedly mounted on the top of the water delivery bucket (6); a rotating rod (45) is rotatably mounted on the rod seat (44); a first worm gear (46), a second worm gear (47) and a third worm gear (48) are fixedly mounted on the outer wall of the rotating rod (45); the first worm gear (46), the second worm gear (47) and the third worm gear (48) are respectively transmission-coordinated with the first toothed disc (41), the second toothed disc (42) and the third toothed disc (43).

5. The wastewater purification equipment for coking VOCs treatment project according to claim 4 is characterized in that: A support (49) is fixedly mounted on the top of the water delivery bucket (6), a cross bar (50) is fixedly mounted on the bottom of the support (49), a vertical bar (51) is internally threadedly mounted on the cross bar (50), a base (52) is hingedly mounted on the top of the vertical bar (51), the base (52) is arranged above the support (49) and one end is hingedly mounted to the support (49), a second motor (53) is fixedly mounted on the base (52), an output shaft of the second motor (53) is connected to an extension rod (55) via a coupling (54), a first belt pulley (56) is fixedly mounted on the end of the extension rod (55), a second belt pulley (57) is fixedly mounted on the end of the rotating rod (45), and a leather strip (58) for transmission is mounted between the first belt pulley (56) and the second belt pulley (57).

6. The wastewater purification equipment for coking VOCs treatment project according to claim 1 is characterized in that: The outlet end of the first sewage outlet pipe (12) is arranged inside the heating box (13) with its opening facing downwards; the second steam delivery pipe (5) is arranged close to the first sewage outlet pipe (12); a second ball valve (59) is installed on the pipeline of the second steam delivery pipe (5); the outlet end of the second steam delivery pipe (5) is arranged above the outlet end of the first sewage outlet pipe (12); a plurality of support plates (60) are fixedly installed on the side wall of the heating box (13); the outer tube wall of the electric heating pipe (14) is fastened to the support plate (60) by nuts; the electric heating pipe (14) is arranged at the bottom of the heating box (13); a wiring terminal (61) is arranged on the outer end surface of the electric heating pipe (14); a protective shell (62) is arranged around the outer periphery of the support plate (60); the protective shell (62) is fastened to the outer wall of the heating box (13); and a plug-in terminal (63) is arranged on the outer side of the protective shell (62).

7. The wastewater purification equipment for coking VOCs treatment project according to claim 1 is characterized in that: The pipe inlets of the benzene series delivery pipe (16) and the alkane delivery pipe (17) are both arranged in the inner cavity of the heating box (13); the pipe inlets of the benzene series delivery pipe (16) and the alkane delivery pipe (17) are both arranged on a side close to the storage box (20); the pipe inlet of the benzene series delivery pipe (16) is arranged at a height higher than the outlet height of the first sewage outlet pipe (12); and the pipe inlet of the alkane delivery pipe (17) is arranged at a height higher than the pipe inlet of the benzene series delivery pipe (16).

8. The wastewater purification equipment for coking VOCs treatment project according to claim 1 is characterized in that: A benzene delivery regulating valve (64) is fixedly installed on the pipeline of the benzene delivery pipe (16), and an alkane delivery regulating valve (65) is fixedly installed on the pipeline of the alkane delivery pipe (17). The benzene delivery regulating valve (64) and the alkane delivery regulating valve (65) are both driven and regulated by a third motor (66). The benzene delivery regulating valve (64), the alkane delivery regulating valve (65) and the third motor (66) are all fixedly installed on the top of the heating box (13).

9. The wastewater purification equipment for coking VOCs treatment project according to claim 1 is characterized in that: A first slow-flow tube (67) is installed on the pipeline of the benzene series delivery pipe (16), a second slow-flow tube (68) is installed on the pipeline of the alkane delivery pipe (17), a first flow valve (69) is fixedly installed at the outlet end of the benzene series delivery pipe (16), a first pipe pressure sensor (70) is fixedly installed on the top of the first flow valve (69), a second flow valve (71) is fixedly installed at the outlet end of the alkane delivery pipe (17), a second pipe pressure sensor (72) is fixedly installed on the bottom of the second flow valve (71), a meter frame (73) is installed on the side of the heating box (13), a first pressure gauge (74) and a second pressure gauge (75) are fixedly installed on the meter frame (73), and the first pressure gauge (74) and the second pressure gauge (75) are respectively connected to the first pipe pressure sensor (70) and the second pipe pressure sensor (72) by wire.

10. The wastewater purification equipment for coking VOCs treatment project according to claim 1 is characterized in that: A partition (76) is fixedly installed in the storage box (20), the first cavity (21) and the second cavity (22) are arranged on both sides of the partition (76), respectively, the benzene output pipe (23) and the alkane output pipe (24) are both arranged on the side close to the first condenser (18) and the second condenser (19), and a third ball valve (77) and a fourth ball valve (78) are installed on the pipes of the benzene output pipe (23) and the alkane output pipe (24), respectively.

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