Explosion-proof hydrocarbon removal device

Abstract

The application provides an explosion-proof hydrocarbon removal device, and relates to the technical field of hydrocarbon removal devices.The explosion-proof hydrocarbon removal device comprises an explosion-proof shell, a gas guide and air intake assembly, and a heating and catalysis assembly.A distributor is connected to an air intake pipe and a gas diffusion pipe respectively.The front end of an inner flow guide shell is connected to the tail end of the gas diffusion pipe, and a catalyst filling layer is arranged in the inner flow guide shell.A heater is arranged between the outer cover box shell and the inner flow guide shell.The air intake pipe is coiled outside the outer cover box shell, and the coil section is located at the tail end of the outer cover box shell.The hydrocarbon gas in the air intake pipe coiled outside the outer cover box shell is preheated, and the gas catalyzed by the catalyst filling layer is discharged from the tail end of the inner flow guide shell.The heat in the gas is conducted to the hydrocarbon gas inside the outer cover box shell through the coil section at the tail end of the outer cover box shell.The gas in the air intake pipe can be better preheated, the heat inside the catalyzed gas is utilized, heat loss is reduced, and the utilization rate of heat is higher.

Description

Technical Field

[0001] This application relates to the field of hydrocarbon removal equipment technology, and more specifically, to an explosion-proof hydrocarbon removal equipment. Background Technology

[0002] Hydrocarbon removal devices are used to safely remove hydrocarbons from gases in flammable and explosive environments by converting hydrocarbon gases into harmless substances through catalytic reactions. Commonly used hydrocarbon removal devices typically employ explosion-proof enclosures to ensure safe operation in hazardous environments.

[0003] In current hydrocarbon removal units, the gas inlet pipe is fed into a heater for heating and catalytic reaction. After the first heating and catalytic reaction, some of the heat generated by the heater is directly discharged with the catalytically produced gas, and this lost heat cannot be reused, resulting in inefficient heat utilization of the heater. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes an explosion-proof hydrocarbon removal device to solve the problem that in current hydrocarbon removal devices, when the gas inlet pipe is introduced into the heater for heating and catalytic reaction, a portion of the heat is directly discharged along with the catalytically produced gas, making it impossible to reuse this lost heat and resulting in insufficient heat utilization efficiency of the heater.

[0005] An explosion-proof hydrocarbon removal device according to an embodiment of this application includes: an explosion-proof housing, a gas inlet assembly, and a heating catalytic assembly.

[0006] The gas guide and intake assembly is installed inside the explosion-proof enclosure. The gas guide and intake assembly includes an intake pipe, a distributor, and a gas diffusion pipe. The distributor is connected to the intake pipe and the gas diffusion pipe respectively.

[0007] The heating catalytic assembly includes an outer casing, a heater, and an inner guide shell. The inner guide shell is located inside the outer casing, and its front end is connected to the rear end of a gas diffusion pipe. A catalyst filling layer is provided inside the inner guide shell. The heater is installed between the outer casing and the inner guide shell to heat the catalyst filling layer. The air inlet pipe, located inside the explosion-proof housing, is coiled around the outside of the outer casing. The air inlet pipe has a coiled section, and the coiled section is located at the rear end of the outer casing.

[0008] Preferably, the catalyst filling layer is a stacked split-flow filling structure, which includes an outer shell plate I, vertical strip plates, split-flow end plates, and corrugated plates. The split-flow end plates are disposed at the front end of the corrugated plates, and the split-flow end plates and the corrugated plates are disposed inside the outer shell plate I. Multiple sets of vertical strip plates are respectively fixed to the top and bottom of the inner shell plate I, and the vertical strip plates extend into the recessed area of ​​the corrugated plates. The outer shell plate I is filled with particulate catalyst I.

[0009] Preferably, the catalyst filling layer is a honeycomb split filling structure, which includes an outer shell plate II and honeycomb blocks. The honeycomb blocks are disposed inside the outer shell plate II. The honeycomb blocks are provided with front honeycomb holes. The two sides of the tail end of the front honeycomb holes and the oblique rear side are respectively provided with interconnected side honeycomb holes and oblique rear honeycomb holes. The ends of the oblique rear honeycomb holes and side honeycomb holes are further provided to connect with another set of front honeycomb holes. The front honeycomb holes, oblique rear honeycomb holes and side honeycomb holes are provided with particulate catalyst II inside.

[0010] Preferably, the gas diffusion fitting includes a dispersion tube and a diffusion shell, the tail end of the dispersion tube is connected to the diffusion shell, the front end of the dispersion tube is connected to the distributor, and the tail end of the diffusion shell is connected to the front end of the inner guide shell.

[0011] Preferably, the dispersion tube has a frustum-shaped structure with a gradually increasing diameter from front to back.

[0012] Preferably, the air intake assembly further includes a gas filling pipe, which passes through the explosion-proof housing and is connected to the distributor, and a solenoid valve is installed on the outside of the gas filling pipe.

[0013] Preferably, the heating catalytic assembly further includes a heat-conducting fin, which is installed between the heater and the inner flow guide shell.

[0014] Preferably, the heater and the heat-conducting fins are arranged in two sets on both sides of the inner flow guide shell.

[0015] Preferably, the heating catalytic assembly further includes a partition plate, and multiple partition plates are arranged in an S-shaped flow guide cavity inside the inner flow guide shell.

[0016] Preferably, the explosion-proof housing has heat dissipation holes on its side.

[0017] The explosion-proof hydrocarbon removal device also includes a thermally conductive secondary catalytic component. Multiple sets of the thermally conductive secondary catalytic components are installed side by side at the tail end of the outer casing, and the coil section runs through the thermally conductive secondary catalytic component. The thermally conductive secondary catalytic component includes a tail end guide shell, a catalyst structure layer, and a flow guiding and dispersing self-adjusting component. Two sets of the flow guiding and dispersing self-adjusting components are symmetrically arranged at the front guide port inside the tail end guide shell. The catalyst structure layer is located inside the tail end guide shell behind the flow guiding and dispersing self-adjusting component.

[0018] Preferably, the flow guiding and dispersing self-adjusting component includes a front guide plate, a rear guide plate, an elastic connecting plate, and an arc-shaped baffle plate. The front guide plate, rear guide plate, elastic connecting plate, and baffle plate are integrally formed, and the elastic connecting plate and baffle plate are respectively located on both sides of the tail end guide shell. The elastic connecting plate is connected to the inner wall of the tail end guide shell, and the rear guide plate is located behind the front guide plate and inclined close to the inner wall of the tail end guide shell.

[0019] The explosion-proof hydrocarbon removal device also includes a flow-blocking and speed-reducing component, which includes an outer shell, a tail shell, and an elastic connecting part. The outer shell is fixedly embedded at the tail end of the dispersion tube, the tail shell is located behind the outer shell, and the elastic connecting part connects the outer shell and the tail shell.

[0020] Preferably, the elastic connection includes a connecting rod, a collar, a connecting piece, a diverter cap, and a spring. The diverter cap is disposed at one end of the connecting rod, and the other end of the connecting rod is fixedly connected to the inner bottom wall of the tail shell. The collar is slidably sleeved on the outside of the connecting rod. The connecting piece connects the collar and the inner wall of the outer shell. The spring is sleeved on the outside of the connecting rod located between the collar and the diverter cap.

[0021] The beneficial effects of this application are as follows: The explosion-proof hydrocarbon removal device obtained by the above design preheats the hydrocarbon-laden gas circulating in the inlet pipe outside the outer casing. When the gas, after being catalyzed by the catalyst filling layer, is discharged from the tail end of the inner guide shell, the heat in the gas is conducted to the hydrocarbon-laden gas inside through the coil section at the tail end of the outer casing. This allows for better preheating of the gas in the inlet pipe and utilizes the heat inside the catalyzed gas, reducing heat loss and achieving higher heat utilization efficiency. The hydrocarbon-laden gas, preheated by the inlet pipe and coil section, enters the gas diffusion pipe through a distributor. The gas diffusion pipe diffuses the hydrocarbon-laden gas, reducing its flow rate, allowing it to flow through the catalyst filling layer at a slower speed, thus improving the catalytic efficiency of the hydrocarbon-laden gas.

[0022] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the explosion-proof hydrocarbon removal device according to an embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the internal structure of the explosion-proof hydrocarbon removal device according to an embodiment of this application;

[0026] Figure 3 This is a schematic diagram of the structure of the air intake assembly and the heating catalytic assembly according to an embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the internal structure of the gas diffusion pipe and the heating catalytic assembly according to an embodiment of this application;

[0028] Figure 5 This is a schematic diagram of the internal structure of the gas diffusion tube and the inner guide shell according to an embodiment of this application;

[0029] Figure 6 This is a partial structural diagram of a catalyst filling layer according to an embodiment of this application when it is a stacked split-flow filling structure;

[0030] Figure 7 This is a partial structural diagram of a catalyst filling layer with a honeycomb split filling structure according to an embodiment of this application;

[0031] Figure 8 This is a schematic diagram of a partial principle structure of a cellular block according to an embodiment of this application;

[0032] Figure 9 This is a schematic diagram of the structure of the thermally conductive secondary catalytic component according to an embodiment of this application;

[0033] Figure 10 This is a schematic diagram of the flow guiding and dispersing self-adjusting component structure according to an embodiment of this application;

[0034] Figure 11 This is a schematic diagram of the flow-blocking and speed-reducing component structure according to an embodiment of this application;

[0035] Figure 12 This is a schematic diagram of the elastic connection structure according to an embodiment of this application.

[0036] Figure label:

[0037] 1. Explosion-proof housing; 11. Heat dissipation holes; 2. Gas guide and intake assembly; 21. Intake pipe; 22. Coil section; 23. Distributor; 24. Gas diffusion fittings; 241. Dispersion pipe; 242. Diffusion shell; 25. Gas filling pipe; 26. Solenoid valve; 3. Heating catalytic assembly; 31. Outer casing; 32. Heater; 33. Inner guide shell; 34. Catalyst filling layer; 3411. Outer shell plate I; 3412. Vertical strip plate; 3413. Diverter end plate; 3414. Corrugated plate; 3415. Particulate catalyst I; 3421. Outer shell plate II; 3422. Front honeycomb holes 3423, Slanted rear honeycomb holes; 3424, Side honeycomb holes; 3425, Particulate catalyst II; 35, Separator plate; 36, Heat-conducting fin plate; 4, Heat-conducting secondary catalytic component; 41, Tail end guide shell; 42, Catalyst structural layer; 43, Flow guiding and dispersing self-adjusting component; 431, Front guide plate; 432, Rear guide plate; 433, Elastic connecting plate; 434, Flow baffle plate; 5, Flow baffle and speed reduction component; 51, Outer shell; 52, Tail shell; 53, Elastic connecting part; 531, Connecting rod; 532, Collar ring; 533, Connecting piece; 534, Flow divider cap; 535, Spring. Detailed Implementation

[0038] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0041] An explosion-proof hydrocarbon removal device according to an embodiment of this application is described below with reference to the accompanying drawings.

[0042] Please see Figures 1-4 An explosion-proof hydrocarbon removal device according to an embodiment of this application includes: an explosion-proof housing 1, a gas inlet assembly 2, and a heating catalytic assembly 3.

[0043] The explosion-proof housing 1 adopts an explosion-proof housing structure, providing excellent explosion protection for the entire hydrocarbon removal device. The gas inlet assembly 2 and the heating catalytic assembly 3 preheat the introduced hydrocarbon-laden gas, reducing heat loss and resulting in better overall catalytic hydrocarbon removal performance.

[0044] The gas inlet assembly 2 is installed inside the explosion-proof enclosure 1. The gas inlet assembly 2 includes an inlet pipe 21, a distributor 23, and a gas diffusion pipe 24. The distributor 23 connects to both the inlet pipe 21 and the gas diffusion pipe 24. The heating catalytic assembly 3 includes an outer casing 31, a heater 32, and an inner guide shell 33. The inner guide shell 33 is located inside the outer casing 31, and its front end is connected to the rear end of the gas diffusion pipe 24. A catalyst filling layer 34 is disposed inside the inner guide shell 33. The heater 32 is installed between the outer casing 31 and the inner guide shell 33 to heat the catalyst filling layer 34. The inlet pipe 21, located inside the explosion-proof enclosure 1, is coiled around the outside of the outer casing 31. The inlet pipe 21 has a coil section 22, which is located at the rear end of the outer casing 31.

[0045] Hydrocarbon-laden gas is introduced through inlet pipe 21. When heater 32 heats the interior of inner guide shell 33, the heat inside explosion-proof shell 1 preheats the hydrocarbon-laden gas circulating in inlet pipe 21 outside outer casing 31. As the gas, after being catalyzed by catalyst filling layer 34, exits from the tail end of inner guide shell 33, the heat in the gas is conducted to the hydrocarbon-laden gas inside through coil section 22 at the tail end of outer casing 31. This not only better preheats the gas in inlet pipe 21 but also utilizes the heat inside the catalyzed gas, reducing heat loss and achieving higher heat utilization. The hydrocarbon-laden gas, preheated by inlet pipe 21 and coil section 22, enters the gas diffusion pipe 24 through distributor 23. The gas diffusion pipe 24 diffuses the hydrocarbon-laden gas, reducing its flow rate, allowing it to flow through catalyst filling layer 34 at a slower speed, thus improving the catalytic efficiency of the hydrocarbon-laden gas.

[0046] In one embodiment of this application, please refer to Figure 4 and Figure 6 The catalyst packing layer 34 is a stacked and diverted packing structure. This structure includes an outer shell plate I 3411, vertical strip plates 3412, diverting end plates 3413, and corrugated plates 3414. The diverting end plate 3413 is located at the front end of the corrugated plate 3414, and both the diverting end plate 3413 and the corrugated plate 3414 are located inside the outer shell plate I 3411. Multiple sets of vertical strip plates 3412 are fixed to the top and bottom of the inner interior of the outer shell plate I 3411, extending into the recessed area of ​​the corrugated plate 3414. The outer shell plate I 3411 is filled with particulate catalyst I 3415.

[0047] The hydrocarbon-laden gas, after being dispersed and slowed down by the gas diffusion pipe 24, enters the catalyst-filled layer 34 inside the inner guide shell 33. This catalyst-filled layer 34 has a stacked, split-flow filling structure. The incoming hydrocarbon-laden gas is first evenly distributed by the split-flow end plate 3413, flowing between the upper and lower layers of the particulate catalyst I 3415 inside the outer shell plate I 3411. Whether flowing in the upper or lower layer, the hydrocarbon-laden gas can flow along the space separated by the corrugated plate 3414 and the vertical strip plate 3412, preventing it from flowing through large gaps in the particulate layer, which would make it difficult for many catalyst particles to contact the hydrocarbon-laden gas. This design increases the contact area between the hydrocarbon-laden gas and the particulate catalyst I 3415, improving the catalytic effect of the hydrocarbon-laden gas.

[0048] The outer shell plate I 3411 is a box-shaped structure with open ends. The internal vertical strip plate 3412, flow-dividing end plate 3413, and corrugated plate 3414 are all fixed to the internal side walls of the outer shell plate I 3411. This allows the outer shell plate I 3411 to conduct heat from the heater 32, and through the vertical strip plate 3412, flow-dividing end plate 3413, and corrugated plate 3414, the heat is better conducted to the interior of the granular catalyst I 3415. The granular catalyst I 3415 exhibits better heating uniformity, further enhancing its catalytic treatment effect on hydrocarbon-containing gases.

[0049] In another embodiment of this application, please refer to Figure 4 , Figure 7 and Figure 8 The catalyst filling layer 34 is a honeycomb split-flow filling structure, which includes an outer shell plate II 3421 and honeycomb blocks. The honeycomb blocks are disposed inside the outer shell plate II 3421. A front honeycomb hole 3422 is provided inside the honeycomb block. Connected side honeycomb holes 3424 and oblique rear honeycomb holes 3423 are respectively provided on both sides of the tail end of the front honeycomb hole 3422 and on the oblique rear side. The ends of the oblique rear honeycomb holes 3423 and side honeycomb holes 3424 are further connected to another set of front honeycomb holes 3422. Particulate catalyst II 3425 is disposed inside the front honeycomb holes 3422, oblique rear honeycomb holes 3423, and side honeycomb holes 3424.

[0050] In this implementation, the catalyst packing layer 34 is a honeycomb split-flow packing structure. The incoming hydrocarbon-laden gas first enters the front honeycomb aperture 3422 on the front side of the honeycomb split-flow packing structure. The hydrocarbon-laden gas entering the front honeycomb aperture 3422 continues to flow through the rear inclined honeycomb aperture 3423 and the side honeycomb apertures 3424 on both sides, eventually exiting from the rear inclined honeycomb aperture 3423 at the tail end of the honeycomb split-flow packing structure. When the hydrocarbon-laden gas flows through the front honeycomb aperture 3422, the inclined honeycomb aperture 3423, and the side honeycomb apertures 3424, it comes into contact with the internal particulate catalyst II 3425. This technical solution can better increase the contact area between the flowing hydrocarbon-laden gas and the particulate catalyst II 3425, resulting in a better catalytic treatment effect. The honeycomb distribution filling structure adopts a high-temperature resistant and thermally conductive metal structure, which can better disperse the heat conducted from the outer shell plate II3421 to the particulate catalyst II3425 inside the front honeycomb holes 3422, the oblique rear honeycomb holes 3423, and the side honeycomb holes 3424, so as to further improve the catalytic reaction effect.

[0051] Both the above-mentioned particulate catalyst II3425 and particulate catalyst I3415 are composite catalysts with compatible phases, and the heating temperature is controlled at 400℃-500℃.

[0052] For specific settings, please refer to Figure 5 The gas diffusion pipe 24 includes a dispersion pipe 241 and a diffusion shell 242. The tail end of the dispersion pipe 241 is connected to the diffusion shell 242, and the front end of the dispersion pipe 241 is connected to the distributor 23. The tail end of the diffusion shell 242 is connected to the front end of the inner guide shell 33. The dispersion pipe 241 has a frustum-shaped structure with a gradually increasing diameter from front to back. The frustum-shaped structure of the dispersion pipe 241 causes the flow rate of the hydrocarbon-laden gas to gradually slow down. The hydrocarbon-laden gas entering the diffusion shell 242 from the dispersion pipe 241 enters a larger space, which further slows down the flow rate of the hydrocarbon-laden gas flowing into the diffusion shell 242. The slowly flowing hydrocarbon-laden gas is more easily catalyzed by the catalyst inside the catalyst filling layer 34, improving the catalytic treatment effect of the hydrocarbon-laden gas.

[0053] For details, please refer to Figure 3 and Figure 4 The gas inlet assembly 2 also includes a gas filling pipe 25, which penetrates the explosion-proof housing 1 and is connected to the distributor 23. A solenoid valve 26 is installed on the outside of the gas filling pipe 25. When the solenoid valve 26 is opened, non-hydrocarbon gas can be added to the distributor 23 through the gas filling pipe 25, thereby diluting the hydrocarbon-containing gas. The hydrocarbon-containing gas, after being mixed and diluted by the distributor 23, then enters the inner guide shell 33 through the gas diffusion pipe 24 and undergoes a catalytic reaction with the catalyst filling layer 34, resulting in a more efficient hydrocarbon removal effect.

[0054] Furthermore, the heating catalytic assembly 3 also includes heat-conducting fins 36, which are installed between the heater 32 and the inner flow guide shell 33. Both the heater 32 and the heat-conducting fins 36 are arranged in two sets on both sides of the inner flow guide shell 33. The heat-conducting fins 36 are used to conduct heat from the heater 32 to the inner flow guide shell 33. The arrangement of the two sets of heaters 32 and heat-conducting fins 36 ensures that the catalyst filling layer 34 inside the inner flow guide shell 33 is heated more uniformly.

[0055] In a specific configuration, the heating catalytic assembly 3 also includes partition plates 35. Multiple sets of partition plates 35 are arranged inside the inner guide shell 33 to form an S-shaped guide cavity. The partition plates 35 divide the interior of the inner guide shell 33 into S-shaped guide cavities, extending the time that hydrocarbon-laden gas flows through the catalyst packing layer 34. This allows the hydrocarbon-laden gas more time to undergo a catalytic reaction with the catalyst packing layer 34, further enhancing the hydrocarbon removal efficiency of the device.

[0056] Preferably, the explosion-proof housing 1 has heat dissipation holes 11 on its side. The heat dissipation holes 11 can be used to dissipate internal heat and internal catalytic gases.

[0057] The aforementioned explosion-proof hydrocarbon removal device uses primary catalytic treatment. If a secondary catalytic treatment can be performed using a smaller space, the device's treatment effect on hydrocarbon-containing gases can be further improved.

[0058] Please see Figure 2 , Figure 4 , Figure 9 and Figure 10 The explosion-proof hydrocarbon removal device also includes a thermally conductive secondary catalytic converter 4. Multiple sets of thermally conductive secondary catalytic converters 4 are installed side-by-side at the tail end of the outer casing 31, and the coil section 22 penetrates through the thermally conductive secondary catalytic converter 4. The thermally conductive secondary catalytic converter 4 includes a tail end guide shell 41, a catalyst structure layer 42, and a flow guiding and dispersing self-adjusting component 43. Two sets of flow guiding and dispersing self-adjusting components 43 are symmetrically arranged at the front guide port inside the tail end guide shell 41, and the catalyst structure layer 42 is located inside the tail end guide shell 41 behind the flow guiding and dispersing self-adjusting component 43. The flow guiding and dispersing self-adjusting component 43 includes a front guide plate 431, a rear guide plate 432, an elastic connecting plate 433, and an arc-shaped flow baffle 434. The front guide plate 431, the rear guide plate 432, the elastic connecting plate 433, and the flow baffle 434 are integrally formed, and the elastic connecting plate 433 and the flow baffle 434 are located on both sides of the front guide plate 431, respectively. The elastic connecting plate 433 is connected to the inner wall of the tail end guide shell 41, and the rear guide plate 432 is located on the rear side of the front guide plate 431 and is inclined close to the inner wall of the tail end guide shell 41.

[0059] After primary treatment by the catalyst-filled layer 34 inside the inner guide shell 33, the gas passes through the guide port at the front end of the tail guide shell 41, and enters the interior of the tail guide shell 41 through the gap between the front guide plate 431 between the two sets of guide and dispersion self-adjusting components 43, where it undergoes a catalytic reaction with the catalyst structure layer 42. This achieves secondary catalytic reaction treatment of hydrocarbon-containing gases, further improving the device's treatment efficiency for hydrocarbon-containing gases. When the front guide plate 431 at the front end of the tail end guide shell 41 is between the two guide plates 432, the baffle plate 434 can block part of the gas. Under the baffle plate 434's blocking effect, the baffle plate 434 will move and deflect backward around the elastic connecting plate 433, which increases the gap between the two sets of rear guide plates 432. The gas flowing from between the two sets of front guide plates 431 enters a larger space, that is, the flow rate of hydrocarbon-laden gas entering the tail end guide shell 41 will decrease and become slower. The catalyst structure layer 42 inside the tail end guide shell 41 has more time to contact the hydrocarbon-laden gas, improving the hydrocarbon-laden gas treatment efficiency.

[0060] Secondly, the tail-end guide shell 41 is made of a plate with good thermal conductivity. It can absorb the heat after the primary catalytic gas is released, and this heat can be conducted through the tail-end guide shell 41 to the coil section 22, so that the hydrocarbon-laden gas inside the coil section 22 can be better preheated. Moreover, the tail-end guide shell 41 is made of a plate with good thermal conductivity, which also allows the catalyst structure layer 42 inside the tail-end guide shell 41 to be better preheated to treat the residual hydrocarbon-laden gas in the gas.

[0061] The catalyst structure layer 42 can also be the catalyst filling layer 34 in the two embodiments described above. Using the catalyst filling layer 34 in these two embodiments, i.e., a stacked split-flow filling structure or a honeycomb split-flow filling structure, can better perform secondary catalysis on hydrocarbon-laden gases, further improving the hydrocarbon removal efficiency of the hydrocarbon removal device.

[0062] When the hydrocarbon-laden gas in the explosion-proof hydrocarbon removal device passes through the gas diffusion pipe 24, it can play a certain role in slowing down the flow of the hydrocarbon-laden gas. However, the slowing effect is greatly reduced for hydrocarbon-laden gas with a high velocity.

[0063] Please see Figure 4 , Figure 11 and Figure 12The explosion-proof hydrocarbon removal device also includes a flow-blocking and speed-reducing assembly 5, which comprises an outer shell 51, a tail shell 52, and an elastic connecting part 53. The outer shell 51 is fixedly embedded at the tail end of the dispersion tube 241, the tail shell 52 is located behind the outer shell 51, and the elastic connecting part 53 connects the outer shell 51 and the tail shell 52. The elastic connecting part 53 includes a connecting rod 531, a collar 532, a connecting piece 533, a flow-diverting cap 534, and a spring 535. The flow-diverting cap 534 is disposed at one end of the connecting rod 531, and the other end of the connecting rod 531 is fixedly connected to the inner bottom wall of the tail shell 52. The collar 532 is slidably sleeved on the outside of the connecting rod 531. The connecting piece 533 connects the collar 532 and the inner wall of the outer shell 51. The spring 535 is sleeved on the outside of the connecting rod 531 located between the collar 532 and the flow-diverting cap 534.

[0064] When hydrocarbon-laden gas enters the distributor 23 through the inlet pipe 21, the distributor 23 can regulate the flow rate of the hydrocarbon-laden gas flowing into the gas diffusion pipe 24. When the hydrocarbon-laden gas flowing into the dispersion pipe 241 flows at a relatively fast speed, the flowing hydrocarbon-laden gas will impact the tail shell 52 through the outer shell 51. After being impacted by the hydrocarbon-laden gas, the tail shell 52 will buffer this part of the gas entering the diffusion shell 242, thus achieving the function of buffering the rapidly flowing gas. When the tail shell 52 receives the impact of the rapidly flowing hydrocarbon-laden gas, the spring 535 in the elastic connection part 53 will be compressed to play a buffering role. This can work with the outer shell 51 and the tail shell 52 to appropriately slow down the flow rate of the hydrocarbon-laden gas inside the dispersion pipe 241, increase the catalytic reaction time between the subsequent hydrocarbon-laden gas and the catalyst filling layer 34, and improve the catalytic hydrocarbon removal efficiency.

[0065] It should be noted that the explosion-proof enclosure 1 should be equipped with a corresponding temperature sensor, and the explosion-proof enclosure 1 should have a corresponding control panel and adjustment switch on the outside. This design scheme is a commonly used structure in existing hydrocarbon removal devices, and will not be elaborated further here. The specific model and specifications of the aforementioned solenoid valve 26 and heater 32 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts existing technology in this field, and will not be described in detail here. The power supply and principle of the solenoid valve 26 and heater 32 are clear to those skilled in the art, and will not be described in detail here.

[0066] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0067] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An explosion-proof hydrocarbon removal device, characterized in that, include: An explosion-proof housing (1) and a gas inlet assembly (2) are installed inside the explosion-proof housing (1). The gas inlet assembly (2) includes an inlet pipe (21), a distributor (23) and a gas diffusion pipe (24). The distributor (23) is connected to the inlet pipe (21) and the gas diffusion pipe (24) respectively. The heating catalyst assembly (3) includes an outer casing (31), a heater (32), and an inner guide shell (33). The inner guide shell (33) is located inside the outer casing (31), and the front end of the inner guide shell (33) is connected to the tail end of the gas diffusion pipe (24). A catalyst filling layer (34) is provided inside the inner guide shell (33). The heater (32) is installed between the outer casing (31) and the inner guide shell (33) to heat the catalyst filling layer (34). The air inlet pipe (21) located inside the explosion-proof shell (1) is coiled around the outside of the outer casing (31). The air inlet pipe (21) is provided with a coil section (22), and the coil section (22) is located at the tail end of the outer casing (31). A thermally conductive secondary catalytic component (4) is provided. Multiple sets of the thermally conductive secondary catalytic components (4) are installed side by side at the tail end of the outer casing (31), and the coil section (22) penetrates through the thermally conductive secondary catalytic component (4). The thermally conductive secondary catalytic component (4) includes a tail end guide shell (41), a catalyst structure layer (42), and a flow-dispersing self-adjusting component (43). Two sets of the flow-dispersing self-adjusting components (43) are symmetrically arranged at the front flow-dispersing port inside the tail end guide shell (41). The catalyst structure layer (42) is located inside the tail end guide shell (41) behind the flow-dispersing self-adjusting component (43). The flow guiding and dispersing self-adjusting component (43) includes a front guide plate (431), a rear guide plate (432), an elastic connecting plate (433), and an arc-shaped baffle plate (434). The front guide plate (431), the rear guide plate (432), the elastic connecting plate (433), and the baffle plate (434) are integrally formed. The elastic connecting plate (433) and the baffle plate (434) are located on both sides of the tail end guide shell (41). The elastic connecting plate (433) is connected to the inner wall of the tail end guide shell (41). The rear guide plate (432) is located behind the front guide plate (431) and is inclined close to the inner wall of the tail end guide shell (41).

2. The explosion-proof hydrocarbon removal device according to claim 1, characterized in that, The catalyst filling layer (34) is a stacked split filling structure, which includes an outer shell plate I (3411), vertical strip plates (3412), a split end plate (3413), and a corrugated plate (3414). The split end plate (3413) is disposed at the front end of the corrugated plate (3414), and the split end plate (3413) and the corrugated plate (3414) are disposed inside the outer shell plate I (3411). Multiple sets of vertical strip plates (3412) are respectively fixed at the top and bottom of the inner shell plate I (3411), and the vertical strip plates (3412) extend to the recessed area of ​​the corrugated plate (3414). The outer shell plate I (3411) is filled with particulate catalyst I (3415).

3. The explosion-proof hydrocarbon removal device according to claim 1, characterized in that, The catalyst filling layer (34) is a honeycomb split filling structure, which includes an outer shell plate II (3421) and a honeycomb block. The honeycomb block is disposed inside the outer shell plate II (3421). A front honeycomb hole (3422) is provided inside the honeycomb block. A side honeycomb hole (3424) and a rear honeycomb hole (3423) are respectively provided on both sides of the tail end of the front honeycomb hole (3422) and on the oblique rear side. The ends of the oblique rear honeycomb hole (3423) and the side honeycomb hole (3424) are further provided to communicate with another set of front honeycomb holes (3422). A particulate catalyst II (3425) is disposed inside the front honeycomb hole (3422), the oblique rear honeycomb hole (3423), and the side honeycomb hole (3424).

4. The explosion-proof hydrocarbon removal device according to claim 1, characterized in that, The gas diffusion pipe (24) includes a dispersion pipe (241) and a diffusion shell (242). The tail end of the dispersion pipe (241) is connected to the diffusion shell (242), the front end of the dispersion pipe (241) is connected to the distributor (23), and the tail end of the diffusion shell (242) is connected to the front end of the inner guide shell (33).

5. The explosion-proof hydrocarbon removal device according to claim 4, characterized in that, The dispersion tube (241) has a frustum-shaped structure with a gradually increasing diameter from front to back.

6. The explosion-proof hydrocarbon removal device according to claim 1, characterized in that, The air intake assembly (2) also includes an air filling pipe (25), which is connected to the distributor (23) through the explosion-proof shell (1), and a solenoid valve (26) is installed on the outside of the air filling pipe (25).

7. The explosion-proof hydrocarbon removal device according to claim 1, characterized in that, The heating catalytic assembly (3) also includes a heat-conducting fin (36), which is installed between the heater (32) and the inner flow guide shell (33).

8. The explosion-proof hydrocarbon removal device according to claim 7, characterized in that, The heater (32) and the heat-conducting fins (36) are both arranged in two sets on both sides of the inner guide shell (33).

9. The explosion-proof hydrocarbon removal device according to claim 1, characterized in that, The heating catalytic assembly (3) also includes a partition plate (35), and multiple partition plates (35) are arranged in an S-shaped structure inside the inner guide shell (33).

10. The explosion-proof hydrocarbon removal device according to claim 1, characterized in that, The explosion-proof housing (1) has heat dissipation holes (11) on its side.

Images