A coal tar refining tail gas treatment and purification device

Abstract

This application relates to the field of exhaust gas treatment technology and discloses a coal tar refining exhaust gas treatment and purification device, including a pretreatment mechanism. The pretreatment mechanism has two chambers, each containing a movable auxiliary adsorption box. The lower auxiliary adsorption box is filled with iron ring material, and the upper auxiliary adsorption box is filled with a polymer material. This invention, by setting up a pretreatment mechanism, pre-treats the exhaust gas before it enters the purification mechanism, effectively improving the protection of activated carbon and preventing its rapid deactivation due to moisture and oil mist clogging the micropores. This ensures the exhaust gas purification effect while reducing equipment operating costs. Furthermore, by designing the pretreatment and purification mechanisms and adopting a strategy of "step-by-step dehydration and deoiling and segmented activated carbon adsorption," the long-term, stable, and efficient purification of the exhaust gas is further guaranteed.

Description

Technical Field

[0001] This application relates to the field of exhaust gas treatment technology, and in particular to a device for treating and purifying exhaust gas from coal tar refining. Background Technology

[0002] Coal tar refining refers to the separation and transformation of coal tar, a byproduct of coal coking, through physical and chemical methods to produce more valuable chemical products and new materials, thereby achieving high-value utilization of resources. However, coal tar refining generates exhaust gases with complex and hazardous components, requiring purification devices to convert them into fuels or raw materials, achieving a balance between safety, environmental protection, and economic benefits.

[0003] Activated carbon adsorption boxes are commonly used purification devices for treating tail gas from coal tar refining. They mainly utilize the large specific surface area and microporous structure of activated carbon to efficiently adsorb various pollutants in the tail gas through physical adsorption. However, activated carbon adsorption boxes have some drawbacks in actual use: First, because coal tar refining tail gas has characteristics such as high humidity, oil mist, and complex VOCs (benzene compounds, naphthalene, phenols, etc.), the activated carbon in the box will quickly deactivate due to moisture and oil mist clogging the micropores, resulting in a short service life and high operating costs. Second, the adsorption of organic matter by activated carbon is an exothermic process. If the temperature inside the box exceeds 40°C, the adsorption efficiency will decrease, and if it exceeds 50°C, desorption or even spontaneous combustion may occur, which not only affects the adsorption efficiency but also poses safety hazards. Summary of the Invention

[0004] This application proposes a coal tar refining tail gas treatment and purification device, which has the advantages of ensuring tail gas purification effect and reducing equipment operating costs by sequentially setting a pretreatment mechanism, a purification mechanism and an emission mechanism, thereby solving the problems of short activated carbon service life and high equipment operating costs.

[0005] To achieve the above objectives, this application adopts the following technical solution: a coal tar refining tail gas treatment and purification device, comprising:

[0006] The pretreatment mechanism has two chambers, and each chamber is equipped with an auxiliary adsorption box. The lower auxiliary adsorption box is filled with iron ring material, and the upper auxiliary adsorption box is filled with polymer material.

[0007] The purification mechanism has seven chambers, with an auxiliary adsorption box movable in the uppermost chamber and a main adsorption box movable in the remaining chambers. The auxiliary adsorption box is filled with polymer material, and the main adsorption box is filled with activated carbon material.

[0008] The exhaust gas passes through the pretreatment and purification mechanisms in sequence, so that the exhaust gas is pretreated before contacting the activated carbon, thereby improving the protection of the activated carbon.

[0009] Furthermore, it also includes:

[0010] The pretreatment unit is located in front of the purification unit, and the emission unit is located behind the purification unit.

[0011] The first pipe, wherein the bottom layer of the pretreatment mechanism is fixedly connected to one end of the first pipe;

[0012] The second pipe, the top layer of the pretreatment mechanism is fixedly connected to one end of the second pipe, and the top layer of the purification mechanism is fixedly connected to the other end of the second pipe;

[0013] The third pipe, the bottom layer of the purification mechanism is fixedly connected to one end of the third pipe, and the bottom layer of the discharge mechanism is fixedly connected to the other end of the third pipe;

[0014] The water collection mechanism is connected to the pretreatment mechanism, the purification mechanism, and the discharge mechanism.

[0015] Furthermore, the water collection mechanism includes:

[0016] A water collection tank, which is equipped with a level gauge and a drain valve;

[0017] The water collection pipe connects the water collection tank to the bottom of the pretreatment unit, the purification unit, and the discharge unit respectively through the water collection pipe.

[0018] The pretreatment and purification mechanisms are equipped with drainage pipes, one end of which can be connected to the auxiliary adsorption box or the main adsorption box, and the other end of which is connected to the water collection pipe.

[0019] Furthermore, both the auxiliary adsorption box and the main adsorption box include:

[0020] The box body is movably mounted inside the warehouse, and the top and bottom surfaces of the box body are provided with several air holes;

[0021] The loading and unloading cover is provided on the upper half of one side of the box body, and the loading and unloading cover is movably engaged with the loading and unloading cover. The box body and the loading and unloading cover are connected by bolts.

[0022] The collection tube has several collection slots at the bottom of the box, and the box is movably connected to the collection tube through the collection slots. The length of the collection tube is longer than the internal width of the box, and one end of the collection tube extends into but does not extend out of one side wall of the box, while the other end of the collection tube extends into and extends out of the other side wall of the box. A collection hole is provided on the top layer of the collection tube located inside the box.

[0023] Furthermore, the drainage pipe includes:

[0024] A vertical pipe, which is fixedly embedded in the wall of the pretreatment mechanism or the purification mechanism;

[0025] The vertical tube has several horizontal tubes fixedly connected to it, and each horizontal tube corresponds to a box body.

[0026] A connecting pipe, one end of which is fixedly connected to the inside of the horizontal pipe, and the other end of which is movably connected to one end of the collection pipe extending out of the box. One connecting pipe inside the horizontal pipe corresponds to one collection pipe inside the box.

[0027] Furthermore, the main adsorption box also includes:

[0028] The auxiliary module has an auxiliary groove on the inner wall of the box, and the box is movably connected to the auxiliary module through the auxiliary groove. Several auxiliary modules are evenly arranged longitudinally inside the box.

[0029] The housing also contains an active component, one end of which is movably connected to a collection tube and the other end of which is movably connected to an auxiliary module. One active component is provided for each collection tube and two active components are provided for each auxiliary module.

[0030] Furthermore, the auxiliary module includes:

[0031] The front plate is movably engaged with the front side of the auxiliary groove, and the front plate is located on the same side as the loading and unloading cover.

[0032] The air intake pipe is movably engaged with the right side of the auxiliary slot;

[0033] An air outlet pipe is movably connected to the left side of the auxiliary groove;

[0034] The rear plate is movably engaged with the rear side of the auxiliary slot, and the rear plate is positioned opposite to the loading and unloading cover. One side wall of the front plate is fixedly connected to one end of the air inlet pipe, and the other side wall of the front plate is fixedly connected to one end of the air outlet pipe. The other end of the air inlet pipe passes through one end of the rear plate, and the other end of the air outlet pipe passes through the other end of the rear plate.

[0035] The fixing components are located between the air inlet pipe and the air outlet pipe inside the box body. The cooling gas is discharged from the air inlet pipe, passes through the fixing components, and is discharged from the air outlet pipe.

[0036] Furthermore, the front plate, air inlet pipe, air outlet pipe, and rear plate are all of equal thickness, and the thickness of the fastener is thinner than that of the front plate.

[0037] By designing the auxiliary module, it can move horizontally back and forth along the auxiliary groove of the main adsorption box during the filling and unloading of activated carbon. Specifically, when filling activated carbon, the auxiliary module can perform a back-and-forth scraping operation on the moving carbon filled into the box, ensuring that there are no obvious gaps between the activated carbon, effectively improving the uniformity of activated carbon distribution, and avoiding the situation of natural gradation and uneven density caused by pouring activated carbon from the loading and unloading cover. This enhances the uniformity of the exhaust gas flow distribution when passing through the main adsorption box, further ensuring the adsorption efficiency of the activated carbon. When unloading activated carbon, the auxiliary module can perform a back-and-forth impact operation on the activated carbon to be discharged. Since pollutants in the exhaust gas will continuously accumulate in the activated carbon and form a hard shell during actual use, the cleaning difficulty will increase. The movable design of the auxiliary module can effectively break the hard shell and reduce the cleaning difficulty. In addition, the vertical arrangement of multiple auxiliary modules can support and restrict the activated carbon in the main adsorption box, and reduce the pressure of the upper activated carbon on the lower activated carbon, preventing the lower activated carbon from being over-compacted and affecting the flow of exhaust gas.

[0038] Furthermore, the fastener includes:

[0039] A fixed body, one end of which is fixedly connected to the interior of the air intake pipe, and the other end of which is fixedly connected to the interior of the air outlet pipe, wherein the fixed body is in the shape of a broken line;

[0040] One-way air valves are provided at both ends of the fixed body, and the gas flow direction of the one-way air valves is from the inlet pipe to the outlet pipe.

[0041] Furthermore, the active component includes:

[0042] The movable block is movably sleeved inside the collecting tube, and the movable block only moves within the collecting hole of the collecting tube;

[0043] A movable spring, one end of which is fixedly connected to one side wall of the movable block, and the other end of which is fixedly connected to the inner wall of one end of the collecting tube;

[0044] A movable steel rope, one end of which is fixedly connected to the other side wall of the movable block;

[0045] The movable stud has one end of the movable steel rope that passes through the top of the other end of the collecting tube and is fixedly connected to the movable stud. The front plate has threaded holes at both ends and is movably connected to the movable stud through the threaded holes. The wall of the box has a rail groove, and the movable steel rope located between the collecting tube and the auxiliary module is movably installed in the rail groove.

[0046] By setting a movable component inside the main adsorption box, with one end of the movable component connected to the collection pipe and the other end connected to the auxiliary module, the reciprocating motion of the movable component can have different functions at different stages. Specifically, when filling activated carbon, the movable component is pulled by the auxiliary module, which will cause the box to vibrate, thereby enhancing the density of the activated carbon in the main adsorption box and further improving the uniformity of the activated carbon distribution. When unloading activated carbon, the movable component is pulled by the auxiliary module, which will cause the residual condensate and oil in the collection pipe to be discharged, thereby improving the cleaning effect of the collection pipe.

[0047] The beneficial effects of this invention are as follows:

[0048] This application provides a coal tar refining tail gas treatment and purification device. By setting up a pretreatment mechanism, the tail gas is pretreated before entering the purification mechanism, which effectively improves the protection of activated carbon and avoids its rapid deactivation due to moisture and oil mist clogging the micropores. This ensures the tail gas purification effect and reduces equipment operating costs. At the same time, through the design of the pretreatment mechanism and the purification mechanism, an auxiliary adsorption box filled with iron ring material and an auxiliary adsorption box filled with polymer material are set in the pretreatment mechanism, and an auxiliary adsorption box filled with polymer material and a main adsorption box filled with activated carbon material are set in the purification mechanism. The strategy of "step-by-step dehydration and deoiling and segmented activated carbon adsorption" is adopted to further ensure that the tail gas is purified in a long-term, stable and efficient manner.

[0049] By designing the main adsorption box, multiple auxiliary modules are arranged vertically inside. Each auxiliary module consists of a front plate, an inlet pipe, an outlet pipe, a rear plate, and fixing components. Since the fixing components are located inside the box and are in full contact with the activated carbon inside, cooling gas can be passed through the fixing components using the inlet and outlet pipes. This effectively absorbs the heat emitted when the activated carbon adsorbs organic matter, reducing the temperature inside the main adsorption box. This ensures the adsorption efficiency of the activated carbon while reducing the possibility of safety hazards. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0051] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0052] Figure 2 This is a three-dimensional structural diagram of the pretreatment mechanism and auxiliary adsorption box located in the cross-section of the pretreatment mechanism in this invention;

[0053] Figure 3This is a cross-sectional three-dimensional structural diagram of the pretreatment mechanism in this invention;

[0054] Figure 4 This is a three-dimensional structural diagram of the purification mechanism, auxiliary adsorption box, and main adsorption box located in the cross-section of the purification mechanism in this invention.

[0055] Figure 5 This is a cross-sectional three-dimensional structural diagram of the purification mechanism in this invention that does not have an auxiliary adsorption box and a main adsorption box.

[0056] Figure 6 This is a three-dimensional structural diagram of the auxiliary adsorption box in this invention;

[0057] Figure 7 This is a cross-sectional three-dimensional structural diagram of the auxiliary adsorption box in this invention;

[0058] Figure 8 This is a three-dimensional structural diagram of the main adsorption box in this invention;

[0059] Figure 9 This is a cross-sectional three-dimensional structural diagram of the main adsorption box in this invention;

[0060] Figure 10 This is a three-dimensional cross-sectional view of the main adsorption box in this invention, without auxiliary modules and moving components.

[0061] Figure 11 This is a three-dimensional structural diagram of the auxiliary module in this invention;

[0062] Figure 12 This is a cross-sectional three-dimensional structural diagram of the auxiliary module in this invention;

[0063] Figure 13 In this invention Figure 12 Enlarged structural diagram at point A;

[0064] Figure 14 This is a three-dimensional structural diagram of the drainage pipe, collection pipe, and movable components in this invention;

[0065] Figure 15 This is a cross-sectional perspective view of the drainage pipe, collection pipe, and movable components in this invention;

[0066] Figure 16 In this invention Figure 15 Enlarged structural diagram at point B;

[0067] Figure 17 In this invention Figure 15 Enlarged structural diagram at point C.

[0068] In the diagram: 1a, Pretreatment mechanism; 1b, Purification mechanism; 1c, Discharge mechanism; 11, First pipe; 12, Second pipe; 13, Third pipe; 2, Water collection mechanism; 21, Water collection tank; 22, Water collection pipe; 3, Drainage pipe; 31, Vertical pipe; 32, Horizontal pipe; 33, Connecting pipe; 4a, Auxiliary adsorption box; 4b, Main adsorption box; 41, Box body; 42, Loading / unloading cover; 5, Collection pipe; 6, Auxiliary module; 61, Front panel; 62, Air inlet pipe; 63, Air outlet pipe; 64, Rear panel; 7, Movable component; 71, Movable block; 72, Movable spring; 73, Movable steel rope; 74, Movable stud; 8, Fixing component; 81, Fixing body; 82, One-way air valve. Detailed Implementation

[0069] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0070] Example 1: A coal tar refining tail gas treatment and purification device, such as... Figure 1The system includes a pretreatment unit 1a, a purification unit 1b, and an emission unit 1c. The pretreatment unit 1a is located in front of the purification unit 1b, and the emission unit 1c is located behind the purification unit 1b. The bottom layer of the pretreatment unit 1a is fixedly connected to one end of the first pipe 11, and the top layer of the pretreatment unit 1a is fixedly connected to one end of the second pipe 12. The top layer of the purification unit 1b is fixedly connected to the other end of the second pipe 12, and the bottom layer of the purification unit 1b is fixedly connected to one end of the third pipe 13. The bottom layer of the emission unit 1c is fixedly connected to the other end of the third pipe 13. The exhaust gas travels along the following path: first, the high-humidity, oily, and VOCs-containing exhaust gas enters the pretreatment unit 1a through the first pipe 11 and moves upward within the pretreatment unit 1a, pre-treating the exhaust gas and removing oil mist and water mist. Then, it enters the purification unit 1b through the second pipe 12 and moves downward within the purification unit 1b. The exhaust gas is purified, removing VOCs, and finally enters the emission mechanism 1c through the third pipe 13. Within the emission mechanism 1c, the gas moves upwards, allowing the purified exhaust gas to be discharged to the outside, thus ensuring long-term, stable, and efficient purification. It is important to note that pressure gauges and thermometers must be installed on the first pipe 11, second pipe 12, and third pipe 13. The pressure gauges monitor the exhaust gas pressure difference; a sudden increase in resistance may indicate blockage or pulverization of the packing material, requiring immediate attention. The thermometers monitor the exhaust gas temperature, and a steam extinguishing system can be used for fire prevention. Furthermore, the exhaust gas flow rate in the pretreatment mechanism 1a and purification mechanism 1b must be strictly controlled, typically at 0.3-0.6 m / s in the adsorption section, to ensure sufficient contact time. Additionally, the exhaust gas concentration at the inlet and outlet of the pretreatment mechanism 1a and purification mechanism 1b must be monitored online to ensure timely replacement of the packing material in the auxiliary adsorption box 4a and main adsorption box 4b, ensuring effective exhaust gas purification.

[0071] like Figures 2-3 The pretreatment unit 1a has two chambers, and each chamber is equipped with an auxiliary adsorption box 4a. The lower auxiliary adsorption box 4a is filled with iron ring material, which is a stainless steel Pall ring. Utilizing the large specific surface area and tortuous channels of the stainless steel Pall ring, large-diameter oil droplets, water droplets, and dust in the exhaust gas flow collide, agglomerate, and are trapped. Under the action of gravity, they flow into the collection pipe 5 at the bottom, thereby removing most of the free liquid and particulate matter in the exhaust gas and reducing the load on subsequent treatment. The upper auxiliary adsorption box 4a is filled with a polymer material, which is a hydrophobic and oleophilic polymer material. It can deeply dehumidify and demist, further adsorbing micron-sized water mist and oil mist in the exhaust gas flow, so that the exhaust gas is deeply "dried". In addition, the auxiliary adsorption box 4a can be pulled out from the chamber of the pretreatment unit 1a to replace its filling material.

[0072] like Figures 4-5The purification unit 1b has seven chambers, with an auxiliary adsorption box 4a movable in the top chamber and a main adsorption box 4b movable in the remaining chambers. The auxiliary adsorption box 4a is filled with a hydrophobic and oleophilic polymer material, which serves as the last line of defense before entering the main adsorption box 4b, ensuring that any water mist or oil mist that may penetrate the pretreatment is intercepted, thus extending the life of the activated carbon. The main adsorption box 4b is filled with activated carbon material, which is a waterproof honeycomb activated carbon with an iodine value greater than 800 mg / g and a size of 10mm*10mm*10mm. It has a high specific surface area, a well-developed microporous structure, and a large adsorption capacity for organic compounds such as benzene and naphthalene. Because the main adsorption box 4b has six layers, it can provide a huge adsorption capacity, ensuring good purification effect and long replacement cycle. In addition, the auxiliary adsorption box 4a and the main adsorption box 4b can be removed from the chambers of the purification unit 1b for replacement of their filling materials.

[0073] The exhaust gas passes through the pretreatment unit 1a, the purification unit 1b, and the emission unit 1c in sequence, which effectively pre-treats the exhaust gas before it comes into contact with the activated carbon, improves the protection of the activated carbon, and avoids its rapid deactivation due to the blockage of micropores by moisture and oil mist. This ensures the purification effect of the exhaust gas and reduces the operating cost of the equipment.

[0074] Example 2, based on Example 1, such as Figures 6-10 Both the auxiliary adsorption box 4a and the main adsorption box 4b include a box body 41, a loading / unloading cover 42, and a collection pipe 5. The box body 41 is movably mounted inside the chamber, and a sealing layer is provided on the inner wall of the chamber that contacts the box body 41 to increase the sealing between the outer wall of the box body 41 and the inner wall of the chamber, preventing exhaust gas from escaping from the pretreatment mechanism 1a and the purification mechanism 1b. Several air holes are provided on the top and bottom surfaces of the box body 41, allowing exhaust gas to enter and exit the box body 41 through the air holes as it passes through the chamber. A loading / unloading port is provided on the upper half of one side of the box body 41, and a loading / unloading cover 42 is movably engaged with the loading / unloading port of the box body 41. The box body 41 and the loading / unloading cover 42 are connected by bolts, and the loading / unloading cover 42 can be removed from the box body by removing the loading / unloading cover 42. The filling material can be loaded and unloaded by disassembling the box 41. Several collection slots are provided at the bottom of the box 41. The distribution of the collection slots does not affect the use of the air vents. The box 41 is movably connected to the collection pipe 5 through the collection slots. The length of the collection pipe 5 is longer than the internal width of the box 41. One end of the collection pipe 5 extends into but does not extend out of one side wall of the box 41, and the other end extends into and out of the other side wall of the box 41. This ensures the stability of the collection pipe 5 on the box 41 and also helps to connect the collection pipe 5 to the drainage pipe 3. The top layer of the collection pipe 5 inside the box 41 has a collection hole to collect the liquid precipitated from the exhaust gas into the collection pipe 5.

[0075] like Figure 1The pretreatment unit 1a, purification unit 1b, and discharge unit 1c are all connected to the water collection unit 2, which can collect the liquid precipitated from the exhaust gas, namely condensate and oil, to prevent the liquid from accumulating in the pretreatment unit 1a, purification unit 1b, and discharge unit 1c and avoid its re-evaporation affecting the airflow distribution. The water collection unit 2 includes a water collection tank 21, a water collection pipe 22, and a drain pipe 3. The water collection tank 21 is equipped with a level gauge and a drain valve. The level gauge can be used to monitor the liquid content in the water collection tank 21, and the drain valve can be used to periodically and manually or automatically discharge the liquid collected in it. The water collection tank 21 is connected to the bottom of the pretreatment unit 1a, purification unit 1b, and discharge unit 1c through the water collection pipe 22, so as to discharge the liquid accumulated in the pretreatment unit 1a, purification unit 1b, and discharge unit 1c in a timely manner. Figures 2-10 The pretreatment unit 1a and the purification unit 1b are equipped with drainage pipes 3. One end of the drainage pipe 3 can be connected to the auxiliary adsorption box 4a or the main adsorption box 4b, and the other end of the drainage pipe 3 is connected to the water collection pipe 22, which precisely connects to the auxiliary adsorption box 4a and the main adsorption box 4b, and promptly discharges the liquid accumulated in the auxiliary adsorption box 4a and the main adsorption box 4b.

[0076] like Figures 14-17 The drainage pipe 3 includes a vertical pipe 31, a horizontal pipe 32, and a connecting pipe 33. The vertical pipe 31 is fixedly embedded in the wall of the pretreatment unit 1a or the purification unit 1b. Several horizontal pipes 32 are fixedly connected to the vertical pipe 31, and each horizontal pipe 32 corresponds to a box 41. One end of the connecting pipe 33 is fixedly connected to the inside of the horizontal pipe 32, and the other end of the connecting pipe 33 is movably connected to one end of the collection pipe 5 extending out of the box 41. Each horizontal pipe 32 has a corresponding connecting pipe 33 and a corresponding collection pipe 5 within the box 41. The precise connection between the collection pipe 5 and the drainage pipe 3 effectively ensures that the liquid accumulated in each box 41 can be discharged in time from the pretreatment mechanism 1a or the purification mechanism 1b, thereby preventing the liquid from accumulating in the box 41 and avoiding its re-evaporation, which would affect the airflow distribution. In addition, in the purification mechanism 1b, the exhaust gas passes through each chamber from top to bottom. This airflow direction is conducive to maintaining the stability of the activated carbon bed in the main adsorption box 4b by gravity and facilitates the downward convergence of the liquid precipitated in the main adsorption box 4b into the collection pipe 5.

[0077] Example 3, based on Example 2, such as Figures 8-10The main adsorption box 4b also includes an auxiliary module 6. An auxiliary groove is provided on the inner wall of the box body 41, and the box body 41 is movably connected to the auxiliary module 6 through the auxiliary groove. Several auxiliary modules 6 are evenly arranged longitudinally inside the box body 41. The auxiliary modules 6 can regulate the temperature inside the box body 41 to prevent the subsequent adsorption efficiency of the activated carbon from being affected by excessive temperature, or even to prevent safety hazards. The main adsorption box 4b also includes a temperature detector, which can detect the temperature inside the main adsorption box 4b in real time to ensure the timely operation of the auxiliary modules 6. It should be noted that, in order to rationally design the auxiliary modules 6, the pull-out direction of the auxiliary modules 6 is the same as the pull-out direction of the box body 41 from the chamber, and the pull-out direction of the auxiliary modules 6 is away from the loading and unloading cover 42. In addition, the vertical arrangement of multiple auxiliary modules 6 can support and restrict the activated carbon in the main adsorption box 4b, and reduce the pressure of the upper activated carbon on the lower activated carbon, so as to avoid the lower activated carbon being over-compacted and affecting the flow of exhaust gas.

[0078] like Figures 11-13 The auxiliary module 6 includes a front plate 61, an air inlet pipe 62, an air outlet pipe 63, a rear plate 64, and a fixing component 8. The front plate 61 is movably engaged with the front side of the auxiliary slot, and the front plate 61 is set on the same side as the loading and unloading cover 42. The air inlet pipe 62 is movably engaged with the right side of the auxiliary slot, the air outlet pipe 63 is movably engaged with the left side of the auxiliary slot, and the rear plate 64 is movably engaged with the rear side of the auxiliary slot, and the rear plate 64 is set opposite to the loading and unloading cover 42. The front plate 61, air inlet pipe 62, and air outlet pipe 63 are embedded into the three side walls of the housing 41 to ensure the stability of the auxiliary module 6 on the housing 41. The rear plate 64 is embedded into the three side walls of the housing 41. The remaining sidewalls of the housing 41 can be sealed to ensure that the exhaust gas does not escape outward. One end of the sidewall of the front panel 61 is fixedly connected to one end of the intake pipe 62, and the other end of the sidewall of the front panel 61 is fixedly connected to one end of the exhaust pipe 63. The other end of the intake pipe 62 passes through one end of the rear panel 64, and the other end of the exhaust pipe 63 passes through the other end of the rear panel 64. That is, the inner rings of the front panel 61, intake pipe 62, exhaust pipe 63 and rear panel 64 form a U-shape, and the cross-section of the inner ring is the same as the internal cross-section of the housing 41, which effectively ensures that the exhaust gas can pass evenly through the interior of the housing 41.

[0079] like Figures 12-13Several fixing components 8 are installed between the air inlet pipe 62 and the air outlet pipe 63 inside the housing 41. A refrigeration system is installed outside the purification mechanism 1b. During use, the refrigeration system first cools the gas. Then, the cooled gas is first discharged from the air inlet pipe 62, passes through the fixing components 8, and then is discharged from the air outlet pipe 63. Finally, the gas carrying heat re-enters the refrigeration system to be cooled again. This process repeats, thereby utilizing the fixing components 8 to effectively absorb the heat emitted during the adsorption of organic matter by the activated carbon, reducing the temperature inside the main adsorption box 4b. This ensures the adsorption efficiency of the activated carbon while reducing the possibility of safety hazards. The fixing components 8 include a fixing body 81 and a one-way valve 82. The fixing body 81... One end of the fixed body 81 is fixedly connected to the inside of the air inlet pipe 62, and the other end of the fixed body 81 is fixedly connected to the inside of the air outlet pipe 63. The fixed body 81 is zigzag-shaped and extremely narrow, which maximizes the contact area between the fixed body 81 and the activated carbon while minimizing the space occupied by the fixed body 81 in the box 41, thereby enhancing the heat adsorption capacity of the fixed body 81. Both ends of the fixed body 81 are equipped with one-way valves 82, and the gas flow direction of the one-way valves 82 is from the air inlet pipe 62 to the air outlet pipe 63, ensuring that the flow of cooling gas in each fixed body 81 is equal and that each fixed body 81 performs the same function, thereby making the temperature uniformly cooled throughout the box 41.

[0080] like Figure 11 The front panel 61, air inlet pipe 62, air outlet pipe 63, and rear panel 64 have equal thicknesses, and the thickness of the fixing member 8 is thinner than that of the front panel 61. By utilizing the thickness design of each component in the auxiliary module 6, the smooth movement of the auxiliary module 6 along the auxiliary groove of the housing 41 is effectively ensured. In addition, the design of the fixing member 8 being thinner than the front panel 61 allows the front panel 61 to bear the main impact function during the reciprocating pulling of the auxiliary module 6, effectively reducing the degree and frequency of impact between the fixing member 8 and the activated carbon, thereby improving the protection of the fixing member 8 and extending its service life.

[0081] Example 4, based on Example 3, such as Figures 8-10 The main adsorption box 4b also includes a movable component 7. The movable component 7 is also installed inside the box body 41, with one end of the movable component 7 movably connected to the collection tube 5 and the other end movably connected to the auxiliary module 6. Regarding the number of movable components 7, one movable component 7 is provided for each collection tube 5, and two movable components 7 are provided for each auxiliary module 6. Thus, during the reciprocating movement of the auxiliary module 6, the movable component 7 is driven to perform multiple functions, such as... Figures 14-17The movable component 7 includes a movable block 71, a movable spring 72, a movable steel rope 73, and a movable stud 74. The movable block 71 is movably sleeved inside the collection tube 5, and the movable block 71 only moves within the collection hole of the collection tube 5, effectively limiting the range of movement of the movable block 71 and preventing the movable block 71 from detaching from the collection tube 5 and affecting its use. One end of the movable spring 72 is fixedly connected to one side wall of the movable block 71, and the other end of the movable spring 72 is fixedly connected to the inner wall of one end of the collection tube 5. When the movable spring 72 is in its original state, the movable block 71 is located at one end of the collection tube 5 and does not affect the collection of liquid by the collection tube 5. One end of the movable steel rope 73 is fixedly connected to the other side wall of the movable block 71, and the other end of the movable steel rope 73 moves through the top end of the other end of the collection tube 5 and is fixedly connected to the movable stud 74. The front plate 61 has threaded holes at both ends, and the front plate 61 is movably connected to the movable stud 74 through the threaded holes. When the front plate 61 moves, the movable steel rope is used to move it. The movable block 71 can be pulled synchronously by 73. The wall of the box 41 is provided with a track groove, and the movable steel rope 73 located between the collection pipe 5 and the auxiliary module 6 is movably set in the track groove, effectively limiting the movement trajectory of the movable steel rope 73 and ensuring the stability of the movement of the movable steel rope 73. When the auxiliary module 6 is pulled back and forth in the box 41, if the auxiliary module 6 moves backward, the movable block 71 moves forward along the collection pipe 5 under the tension of the movable steel rope 73. If the auxiliary module 6 moves forward, the movable block 71 moves backward along the collection pipe 5 under the elastic force of the movable spring 72. During this process, the movable block 71 will rub and hit the inner wall of the collection pipe 5 and transmit the vibration to the box 41. If this is the stage of filling activated carbon, it can enhance the density of activated carbon in the main adsorption box 4b and improve the uniformity of activated carbon distribution. If this is the stage of unloading activated carbon, it can help remove the residual condensate and oil in the collection pipe 5 and improve the cleaning effect of the collection pipe 5.

[0082] The working principle of the method of using this invention is as follows:

[0083] During exhaust gas purification, the exhaust gas enters the pretreatment unit 1a through the first pipe 11, and then passes sequentially through an auxiliary adsorption box 4a containing iron ring material and another auxiliary adsorption box 4a containing polymer material. This pretreatment removes oil and water, effectively improving the protection of activated carbon and preventing it from rapidly deactivating due to moisture and oil mist clogging the micropores. This ensures the exhaust gas purification effect while reducing equipment operating costs. Next, the exhaust gas enters the purification unit 1b through the second pipe 12, and then passes sequentially through an auxiliary adsorption box 4a containing polymer material and six main adsorption boxes 4b containing activated carbon. This purification process deeply adsorbs organic matter in the exhaust gas, employing a "tiered dehydration and deoiling and segmented activated carbon adsorption" strategy to further ensure long-term, stable, and efficient purification of the exhaust gas. Finally, the exhaust gas enters the purification unit 1b through the third pipe 13 and is ultimately discharged.

[0084] During this process, the activated carbon adsorbs organic matter, causing the temperature inside the main adsorption box 4b to rise. At this time, the cooling gas is first discharged through the inlet pipe 62, then through the fixing member 8, and finally discharged through the outlet pipe 63. Since the fixing member 8 is in full contact with the activated carbon, it effectively absorbs heat and reduces the temperature inside the main adsorption box 4b, which not only ensures the adsorption efficiency of the activated carbon, but also reduces the possibility of safety hazards.

[0085] When activated carbon needs to be filled into the main adsorption box 4b, the loading and unloading cover 42 is removed, and the activated carbon is poured into the box 41 through the loading and unloading port. When the amount of activated carbon reaches the height of each auxiliary module 6, the auxiliary module 6 is pulled back and forth to perform a back and forth scraping operation on the activated carbon, ensuring that there are no obvious gaps between the activated carbon, effectively improving the uniformity of the activated carbon distribution, and avoiding the situation of natural gradation and uneven density caused by pouring activated carbon from the loading and unloading cover 42. This enhances the uniformity of the distribution of the exhaust gas flow through the main adsorption box 4b, further ensuring the adsorption efficiency of the activated carbon. During this process, the movable component 7 is pulled by the auxiliary module 6 and moves back and forth in the collection pipe 5, effectively impacting the collection pipe 5 and transmitting the vibration to the box 41, thereby enhancing the density of the activated carbon in the main adsorption box 4b and further improving the uniformity of the activated carbon distribution. After filling is completed, the loading and unloading cover 42 is installed back on the box 41 to achieve the sealing of the box 41. Finally, the main adsorption box 4b is pushed back into the purification mechanism 1b.

[0086] When activated carbon needs to be discharged from the main adsorption box 4b, the loading and unloading cover 42 is removed, and the activated carbon is poured out of the box 41 through the loading and unloading port. At the same time, the auxiliary module 6 is pulled back and forth to effectively break the hard shell formed by the continuous accumulation of pollutants on the activated carbon, reducing the difficulty of cleaning the activated carbon. During this process, the movable component 7 is pulled back and forth in the collection pipe 5 by the auxiliary module 6, effectively discharging the condensate and oil remaining in the collection pipe 5, and improving the cleaning effect of the collection pipe 5.

[0087] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those 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 invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A coal tar refining tail gas treatment and purification device, characterized in that, include: The pretreatment unit (1a) has two chambers, and each chamber is equipped with an auxiliary adsorption box (4a). The lower auxiliary adsorption box (4a) is filled with iron ring material, and the upper auxiliary adsorption box (4a) is filled with polymer material. The purification mechanism (1b) has seven chambers, and the uppermost chamber is equipped with an auxiliary adsorption box (4a), while the remaining chambers are equipped with main adsorption boxes (4b). The auxiliary adsorption box (4a) is filled with polymer material, and the main adsorption box (4b) is filled with activated carbon material. The exhaust gas passes through the pretreatment unit (1a) and the purification unit (1b) in sequence, so that the exhaust gas is pretreated before contacting the activated carbon, thereby improving the protection of the activated carbon.

2. The coal tar refining tail gas treatment and purification device according to claim 1, characterized in that, Also includes: The emission mechanism (1c) is located in front of the purification mechanism (1b), and the emission mechanism (1c) is located behind the purification mechanism (1b). The first pipe (11) is fixedly connected to one end of the bottom layer of the pretreatment mechanism (1a); The second pipe (12) has its top layer interior fixedly connected to one end of the second pipe (12), and the top layer interior of the purification mechanism (1b) is fixedly connected to the other end of the second pipe (12). The third pipe (13) is fixedly connected to one end of the bottom layer of the purification mechanism (1b) and the bottom layer of the discharge mechanism (1c) is fixedly connected to the other end of the third pipe (13). The water collection mechanism (2) is connected to the pretreatment mechanism (1a), purification mechanism (1b) and discharge mechanism (1c).

3. The coal tar refining tail gas treatment and purification device according to claim 2, characterized in that, The water collection mechanism (2) includes: A water collection tank (21) is provided with a level gauge and a drain valve; The water collection pipe (22) connects the water collection tank (21) to the bottom of the pretreatment mechanism (1a), the purification mechanism (1b) and the discharge mechanism (1c) respectively through the water collection pipe (22); Drainage pipe (3) is provided in the pretreatment mechanism (1a) and purification mechanism (1b), and one end of the drainage pipe (3) can be connected to the auxiliary adsorption box (4a) or the main adsorption box (4b), and the other end of the drainage pipe (3) is connected to the water collection pipe (22).

4. The coal tar refining tail gas treatment and purification device according to claim 3, characterized in that, Both the auxiliary adsorption box (4a) and the main adsorption box (4b) include: Box (41), the box (41) is movably mounted inside the warehouse, and the top and bottom surfaces of the box (41) are provided with a number of air holes; Loading and unloading cover (42), the upper half of one side of the box (41) is provided with a loading and unloading port, and the loading and unloading cover (42) is movably snapped onto the loading and unloading port of the box (41), and the box (41) and the loading and unloading cover (42) are connected by bolts; The collection tube (5) has several collection slots at the bottom of the box (41), and the box (41) is movably connected to the collection tube (5) through the collection slots. The length of the collection tube (5) is longer than the internal width of the box (41), and one end of the collection tube (5) extends into and does not extend out of one side wall of the box (41), while the other end of the collection tube (5) extends into and extends out of the other side wall of the box (41). The top layer of the collection tube (5) located inside the box (41) has a collection hole.

5. The coal tar refining tail gas treatment and purification device according to claim 4, characterized in that, The drainage pipe (3) includes: A vertical tube (31) is fixedly embedded in the wall of the pretreatment mechanism (1a) or the purification mechanism (1b); A horizontal tube (32) is fixedly connected to the vertical tube (31), and the horizontal tube (32) corresponds one-to-one with the box body (41); Connecting pipe (33), one end of the connecting pipe (33) is fixedly connected to the inside of the horizontal pipe (32), and the other end of the connecting pipe (33) is movably connected to one end of the collection pipe (5) extending out of the box (41). One connecting pipe (33) in the horizontal pipe (32) corresponds to one collection pipe (5) in the box (41).

6. The coal tar refining tail gas treatment and purification device according to claim 5, characterized in that, The main adsorption box (4b) also includes: The auxiliary module (6) has an auxiliary groove on the inner wall of the box (41), and the box (41) is movably connected to the auxiliary module (6) through the auxiliary groove. Several auxiliary modules (6) are evenly arranged longitudinally inside the box (41). The active component (7) is also provided inside the box (41). One end of the active component (7) is movably connected to the collection tube (5), and the other end of the active component (7) is movably connected to the auxiliary module (6). One collection tube (5) is provided with one active component (7), and one auxiliary module (6) is provided with two active components (7).

7. The coal tar refining tail gas treatment and purification device according to claim 6, characterized in that, The auxiliary module (6) includes: Front plate (61), the front plate (61) is movably engaged with the front side of the auxiliary groove, and the front plate (61) and the loading and unloading cover (42) are set on the same side; Air intake pipe (62), which is movably engaged with the right side of the auxiliary slot; An exhaust pipe (63) is movably engaged with the left side of the auxiliary groove; The rear plate (64) is movably engaged with the rear side of the auxiliary groove, and the rear plate (64) is opposite to the loading and unloading cover (42). One end of the side wall of the front plate (61) is fixedly connected to one end of the air inlet pipe (62), and the other end of the side wall of the front plate (61) is fixedly connected to one end of the air outlet pipe (63). The other end of the air inlet pipe (62) passes through one end of the rear plate (64), and the other end of the air outlet pipe (63) passes through the other end of the rear plate (64). The fixing component (8) is located between the air inlet pipe (62) and the air outlet pipe (63) inside the housing (41). The cooling gas is discharged from the air inlet pipe (62), passes through the fixing component (8), and is discharged from the air outlet pipe (63).

8. The coal tar refining tail gas treatment and purification device according to claim 7, characterized in that, The front plate (61), air inlet pipe (62), air outlet pipe (63), and rear plate (64) are of equal thickness, and the thickness of the fastener (8) is thinner than that of the front plate (61).

9. The coal tar refining tail gas treatment and purification device according to claim 8, characterized in that, The fastener (8) includes: A fixed body (81) is fixedly connected at one end to the interior of the air inlet pipe (62) and at the other end to the interior of the air outlet pipe (63). The fixed body (81) is in the shape of a broken line. One-way air valve (82), both ends of the fixed body (81) are provided with one-way air valve (82), and the gas flow direction of the one-way air valve (82) is from the inlet pipe (62) to the outlet pipe (63).

10. The coal tar refining tail gas treatment and purification device according to claim 9, characterized in that, The active component (7) includes: Movable block (71), the inside of the collection tube (5) is movably sleeved with a movable block (71), and the movable block (71) only moves within the collection hole of the collection tube (5); Movable spring (72), one end of which is fixedly connected to one side wall of movable block (71), and the other end of which is fixedly connected to one end of inner wall of collecting tube (5); A movable steel rope (73) is fixedly connected at one end to the other side wall of the movable block (71); The movable stud (74) has the other end of the movable steel rope (73) moving through the top of the other end of the collecting pipe (5) and fixedly connected to the movable stud (74). The front plate (61) has threaded holes at both ends, and the front plate (61) is movably connected to the movable stud (74) through the threaded holes. The wall of the box (41) has a rail groove, and the movable steel rope (73) located between the collecting pipe (5) and the auxiliary module (6) is movably set in the rail groove.

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