Explosion-proof hydrocarbon removal device

Abstract

The invention provides an anti-explosion hydrocarbon removal device, and relates to the technical field of hydrocarbon removal devices. The anti-explosion hydrocarbon removal device comprises an anti-explosion shell, a gas guide and inlet assembly and a heating catalysis assembly. The distributor communicates with the gas inlet pipe and the gas diffusion pipe fitting. The front end of the inner flow guide shell is communicated with the tail end of the gas diffusion pipe fitting, a catalyst filling layer is arranged in the inner flow guide shell, the heater is installed between the outer cover box shell and the inner flow guide shell, the gas inlet pipe is wound outside the outer cover box shell, and the coil pipe section is located at the tail end of the outer cover box shell. The hydrocarbon-containing gas coiled in the gas inlet pipe outside the outer cover box shell is preheated, and when the gas catalyzed by the catalyst filling layer is discharged from the tail end of the inner flow guide shell, heat in the gas is conducted to the hydrocarbon-containing gas inside through the coiled pipe section at the tail end of the outer cover box shell. The gas in the gas inlet pipe can be better preheated, heat in the catalyzed gas is utilized, heat loss is reduced, and the heat utilization rate is higher.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrocarbon removal devices, in particular to an explosion-proof hydrocarbon removal device. BACKGROUND

[0002] The hydrocarbon removal device is used for safely removing hydrocarbons in a flammable and explosive environment, and converting the hydrocarbon gas into harmless substances through catalytic reaction. The commonly used hydrocarbon removal device generally adopts an explosion-proof shell design to ensure that the hydrocarbon removal device can safely operate in a dangerous environment.

[0003] At present, the gas introduction pipe of the hydrocarbon removal device is connected to the heater for heating and catalytic reaction. After the high temperature generated by the heater catalyzes the reaction once, part of the heat is directly discharged with the catalyzed gas, and this part of the lost heat cannot be reused, resulting in low efficiency of the heat generated by the heater. SUMMARY

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides an explosion-proof hydrocarbon removal device to solve the problem that part of the heat is directly discharged with the catalyzed gas when the gas introduction pipe of the current hydrocarbon removal device is connected to the heater for heating and catalytic reaction, and this part of the lost heat cannot be reused, resulting in low efficiency of the heat generated by the heater.

[0005] According to an explosion-proof hydrocarbon removal device according to an embodiment of the present application, the explosion-proof hydrocarbon removal device comprises an explosion-proof shell, a gas guiding and air intake assembly, and a heating and catalytic assembly.

[0006] The gas guiding and air intake assembly is installed inside the explosion-proof shell, and the gas guiding and air intake assembly comprises an air intake pipe, a distributor, and a gas diffusion pipe. The heating and catalytic assembly comprises an outer cover box, a heater, and an inner flow guide shell. The inner flow guide shell is located inside the outer cover box, and the front end of the inner flow guide shell is in communication with the tail end of the gas diffusion pipe. A catalyst filling layer is arranged inside the inner flow guide shell. The heater is installed between the outer cover box and the inner flow guide shell to heat the catalyst filling layer. The air intake pipe located inside the explosion-proof shell is coiled outside the outer cover box. The air intake pipe is provided with a coil section, and the coil section is arranged at the tail end of the outer cover box.

[0007] Preferably, the catalyst filling layer is a stacked shunt filling structure, which comprises an outer shell plate I, a vertical strip plate, a shunt end plate, and a wave plate. The shunt end plate is arranged at the front end of the wave plate, and the shunt end plate and the wave plate are arranged inside the outer shell plate I. A plurality of groups of vertical strip plates are fixed at the top end and the bottom end inside the outer shell plate I, and the vertical strip plates extend to the recessed area of the wave plate. The inner part of the outer shell plate I is filled with granular catalyst I.

[0008] Preferably, the catalyst filling layer is a honeycomb shunt filling structure, which comprises a shell plate II and a honeycomb block arranged inside the shell plate II, and the honeycomb block is internally provided with front honeycomb holes, and the tail ends of the front honeycomb holes and the oblique rear sides are respectively provided with side honeycomb holes and oblique rear honeycomb holes in communication, and the tail ends of the oblique rear honeycomb holes and the side honeycomb holes are further provided with another group of front honeycomb holes in communication, and the front honeycomb holes, the oblique rear honeycomb holes and the side honeycomb holes are internally provided with granular catalyst II.

[0009] Preferably, the gas diffusion pipe comprises a dispersion pipe and a diffusion shell, the tail end of the dispersion pipe is arranged in communication with the diffusion shell, and the front end of the dispersion pipe is arranged in communication with the distributor.

[0010] Preferably, the dispersion pipe is in a circular truncated cone structure with gradually increasing diameter from front to back.

[0011] Preferably, the gas guide and air intake assembly further comprises a gas inlet pipe, the gas inlet pipe is arranged in communication with the distributor through the explosion-proof shell, and the electromagnetic valve is mounted outside the gas inlet pipe.

[0012] Preferably, the heating and catalysis assembly further comprises a heat-conducting fin plate, which is mounted between the heater and the inner flow guide shell.

[0013] Preferably, the heater and the heat-conducting fin plate are both arranged in two groups on both sides of the inner flow guide shell.

[0014] Preferably, the heating and catalysis assembly further comprises a partition plate, and a plurality of partition plates are arranged in the internal structure of the inner flow guide shell to form a flow guide cavity in an S-shaped structure.

[0015] Preferably, the explosion-proof shell is provided with heat dissipation holes on the side.

[0016] The explosion-proof hydrocarbon removal device further comprises a heat-conducting secondary catalysis assembly, a plurality of the heat-conducting secondary catalysis assemblies are arranged in parallel at the tail end of the outer cover box shell, and the coil section penetrates through the heat-conducting secondary catalysis assembly, the heat-conducting secondary catalysis assembly comprises a tail end flow guide shell, a catalyst structure layer and a flow guide dispersion self-adjusting piece, two groups of the flow guide dispersion self-adjusting pieces are symmetrically arranged at the front flow guide port inside the tail end flow guide shell, and the catalyst structure layer is arranged inside the tail end flow guide shell at the rear side of the flow guide dispersion self-adjusting piece.

[0017] Preferably, the flow guide dispersion self-adjusting piece comprises a front flow guide plate, a rear flow guide plate, an elastic connecting plate and an arc-shaped flow resistance plate, the front flow guide plate, the rear flow guide plate, the elastic connecting plate and the flow resistance plate are integrally formed, and the elastic connecting plate and the flow resistance plate are respectively arranged on both sides of the tail end flow guide shell, the elastic connecting plate is connected with the inner wall of the tail end flow guide shell, and the rear flow guide plate is arranged on the rear side of the front flow guide plate and inclined to be close to the inner wall of the tail end flow guide shell.

[0018] The explosion-proof hydrocarbon removal device also has a flow resistance and speed reduction assembly, which comprises an outer cylinder shell, a tail shell and an elastic connecting part, the outer cylinder shell is fixedly embedded at the tail end of the dispersion pipe, the tail shell is located at the rear side of the outer cylinder shell, and the elastic connecting part connects the outer cylinder shell and the tail shell.

[0019] Preferably, the elastic connecting part comprises a connecting rod, a sleeve ring, a connecting sheet, a flow distribution cap and a spring, the flow distribution cap is arranged at one end of the connecting rod, the other end of the connecting rod is fixedly connected with the inner bottom wall of the tail shell, the sleeve ring is slidably sleeved on the outside of the connecting rod, the connecting sheet connects the sleeve ring and the inner wall of the outer cylinder shell, and the spring is sleeved on the outside of the connecting rod between the sleeve ring and the flow distribution cap.

[0020] The explosion-proof hydrocarbon removal device provided by the application has the advantages that the hydrocarbon-containing gas in the air inlet pipe outside the outer cover box shell is preheated, when the gas after catalysis 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-containing gas inside through the coil section at the tail end of the outer cover box shell. The gas in the air inlet pipe can be better preheated, and the heat in the gas after catalysis is utilized to reduce heat loss, so that the heat utilization rate is higher. The hydrocarbon-containing gas after preheating by the air inlet pipe and the coil section enters the gas diffusion pipe through the distributor, the gas diffusion pipe diffuses and reduces the flow rate of the hydrocarbon-containing gas, so that the hydrocarbon-containing gas can flow through the catalyst filling layer at a slower speed, and the catalytic efficiency of the hydrocarbon-containing gas is improved.

[0021] Additional aspects and advantages of the application will be set forth in part in the following description, will become apparent to those skilled in the art from the following description, or will be learned from practicing the application. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments of the application. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 is a structural schematic diagram of the explosion-proof hydrocarbon removal device according to the embodiments of the application; Figure 2 is a structural schematic diagram of the explosion-proof hydrocarbon removal device according to the embodiments of the application; Figure 3 is a structural schematic diagram of the gas guide air inlet assembly and the heating and catalysis assembly according to the embodiments of the application; Figure 4 is a structural schematic diagram of the gas diffusion pipe and the heating and catalysis assembly according to the embodiments of the application; Figure 5 is a schematic diagram of a gas diffusion pipe and an inner guide shell internal structure according to an embodiment of the present application; Figure 6 is a schematic diagram of a partial structure when a catalyst filling layer is a stacked shunt filling structure according to an embodiment of the present application; Figure 7 is a schematic diagram of a partial structure when a catalyst filling layer is a honeycomb shunt filling structure according to an embodiment of the present application; Figure 8 is a schematic diagram of a honeycomb block partial principle structure according to an embodiment of the present application; Figure 9 is a schematic diagram of a heat-conducting secondary catalytic assembly structure according to an embodiment of the present application; Figure 10 is a schematic diagram of a guide dispersion self-regulating piece structure according to an embodiment of the present application; Figure 11 is a schematic diagram of a resistance flow speed reduction assembly structure according to an embodiment of the present application; Figure 12 is a schematic diagram of an elastic connection part structure according to an embodiment of the present application.

[0024] Reference signs: 1, explosion-proof shell; 11, heat dissipation hole; 2, gas guide inlet assembly; 21, gas inlet pipe; 22, coil section; 23, distributor; 24, gas diffusion pipe; 241, dispersion pipe; 242, diffusion shell; 25, gas inlet pipe; 26, electromagnetic valve; 3, heating catalytic assembly; 31, outer cover box shell; 32, heater; 33, inner guide shell; 34, catalyst filling layer; 3411, shell plate I; 3412, vertical strip plate; 3413, shunt end plate; 3414, wave plate; 3415, granular catalyst I; 3421, shell plate II; 3422, front honeycomb hole; 3423, rear inclined honeycomb hole; 3424, side honeycomb hole; 3425, granular catalyst II; 35, partition plate; 36, heat-conducting fin plate; 4, heat-conducting secondary catalytic assembly; 41, tail end guide shell; 42, catalyst structure layer; 43, guide dispersion self-regulating piece; 431, front guide plate; 432, rear guide plate; 433, elastic connection plate; 434, resistance plate; 5, resistance flow speed reduction assembly; 51, outer cylinder shell; 52, tail shell; 53, elastic connection part; 531, connecting rod; 532, collar; 533, connecting sheet; 534, shunt cap; 535, spring. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0026] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0027] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0028] A kind of explosion-proof hydrocarbon removal device according to the embodiment of the present application is described below with reference to the drawings.

[0029] Please refer to Figures 1-4 A kind of explosion-proof hydrocarbon removal device according to the embodiment of the present application, including: explosion-proof shell 1, gas guide intake assembly 2 and heating catalytic component 3.

[0030] Wherein, explosion-proof shell 1 adopts the shell structure of explosion-proof performance, and has good explosion-proof protection effect to the hydrocarbon removal device as a whole. By the setting of gas guide intake assembly 2 and heating catalytic component 3, the gas with hydrocarbon imported can be preheated, heat loss is reduced, so that the device as a whole has better catalytic hydrocarbon removal effect.

[0031] Gas guide intake assembly 2 is installed inside explosion-proof shell 1, and gas guide intake assembly 2 includes intake pipe 21, distributor 23 and gas diffusion pipe 24. Distributor 23 is communicated with intake pipe 21 and gas diffusion pipe 24 respectively. Heating catalytic component 3 includes outer cover box shell 31, heater 32 and inner flow guide shell 33. Inner flow guide shell 33 is located inside outer cover box shell 31, and the front end of inner flow guide shell 33 is communicated with the tail end of gas diffusion pipe 24, and catalyst filling layer 34 is arranged in the inner flow guide shell 33. Heater 32 is installed between outer cover box shell 31 and inner flow guide shell 33 to heat catalyst filling layer 34, and intake pipe 21 located inside explosion-proof shell 1 is coiled outside outer cover box shell 31, intake pipe 21 is provided with coil section 22, and coil section 22 is arranged at the tail end of outer cover box shell 31.

[0032] The gas with hydrocarbon is introduced through the inlet pipe 21. When the heater 32 heats the inside of the inner flow guide shell 33, the heat inside the explosion-proof housing 1 can preheat the gas with hydrocarbon spiraled in the inlet pipe 21 outside the outer cover box shell 31, and when the gas after catalysis by the catalyst filling layer 34 is discharged from the tail end of the inner flow guide shell 33, the heat in the gas will be conducted to the hydrocarbon gas inside through the coil section 22 at the tail end of the outer cover box shell 31. Not only can the gas in the inlet pipe 21 be better preheated, but also the heat inside the gas after catalysis is utilized to reduce heat loss and has a higher utilization rate of heat. The hydrocarbon gas preheated through the inlet pipe 21 and the coil section 22 enters the inside of the gas diffusion pipe 24 through the distributor 23, and the gas diffusion pipe 24 diffuses and reduces the flow rate of the hydrocarbon gas, so that the hydrocarbon gas can flow through the catalyst filling layer 34 at a slower speed, improving the catalytic efficiency of the hydrocarbon gas.

[0033] In an embodiment of the present application, referring to Figure 4 and Figure 6 , the catalyst filling layer 34 is a stacked shunt filling structure. The stacked shunt filling structure includes a shell plate I 3411, a vertical strip plate 3412, a shunt end plate 3413, and a wave plate 3414. The shunt end plate 3413 is arranged at the front end of the wave plate 3414, and the shunt end plate 3413 and the wave plate 3414 are arranged inside the shell plate I 3411. A plurality of vertical strip plates 3412 are respectively fixed at the top end and the bottom end inside the shell plate I 3411, and the vertical strip plates 3412 extend to the recessed area of the wave plate 3414, and the inside of the shell plate I 3411 is filled with granular catalyst I 3415.

[0034] The hydrocarbon gas entering the gas diffusion pipe 24 is dispersed and slowed down, and enters the catalyst filling layer 34 inside the inner flow guide shell 33. This catalyst filling layer 34 is a stacked shunt filling structure, and the entering hydrocarbon gas is first evenly shunted by the shunt end plate 3413 to flow through the upper layer and the lower layer of the granular catalyst I 3415 inside the shell plate I 3411. Whether in the upper layer or the lower layer, the hydrocarbon gas can flow through the space separated by the wave plate 3414 and the vertical strip plate 3412, avoiding the hydrocarbon gas flowing through large gaps in the granular layer, which can easily cause more catalyst particles in the catalyst granular layer to be difficult to contact with the hydrocarbon gas. This design can increase the contact area between the hydrocarbon gas and the granular catalyst I 3415, and improve the catalytic effect of the hydrocarbon gas.

[0035] The shell plate I 3411 is a box-shaped structure with open ends, and the vertical strip plate 3412, the shunt end plate 3413 and the wave plate 3414 inside the shell plate I 3411 are fixed to the two side walls inside the shell plate I 3411, that is, the heat conducted by the heater 32 can be transmitted through the shell plate I 3411, the vertical strip plate 3412, the shunt end plate 3413 and the wave plate 3414, and the heat is better conducted to the inside of the granular catalyst I 3415. The granular catalyst I 3415 has better heating uniformity, which can further improve the catalytic treatment effect on the hydrocarbon-containing gas.

[0036] In another embodiment of the present application, please refer to Figure 4 、 Figure 7 and Figure 8 , the catalyst filling layer 34 is a honeycomb shunt filling structure, which includes a shell plate II 3421 and a honeycomb block arranged inside the shell plate II 3421. The honeycomb block is provided with front honeycomb holes 3422, and the tail ends of the front honeycomb holes 3422 and the oblique rear sides are respectively provided with side honeycomb holes 3424 and oblique rear honeycomb holes 3423 which are connected in communication, and the ends of the oblique rear honeycomb holes 3423 and the side honeycomb holes 3424 are further provided with another group of front honeycomb holes 3422 which are connected in communication, and the inside of the front honeycomb holes 3422, the oblique rear honeycomb holes 3423 and the side honeycomb holes 3424 is provided with granular catalyst II 3425.

[0037] In this embodiment, the catalyst filling layer 34 is a honeycomb shunt filling structure, and the entering hydrocarbon-containing gas first enters the inside of the front honeycomb holes 3422 on the front side of the honeycomb shunt filling structure. The hydrocarbon-containing gas entering the inside of the front honeycomb holes 3422 continues to flow through the oblique rear honeycomb holes 3423 at the tail end and the side honeycomb holes 3424 on both sides, and the hydrocarbon-containing gas enters the rear front honeycomb holes 3422 until finally discharged from the oblique rear honeycomb holes 3423 at the tail end of the honeycomb shunt filling structure. When the hydrocarbon-containing gas flows in the front honeycomb holes 3422, the oblique rear honeycomb holes 3423 and the side honeycomb holes 3424, it contacts with the internal granular catalyst II 3425. This technical solution can more optimally improve the contact area between the flowing hydrocarbon-containing gas and the granular catalyst II 3425, and can have a better catalytic treatment effect. The honeycomb shunt filling structure adopts a metal structure which is resistant to high temperature and easy to conduct heat, which can better disperse the heat conducted by the shell plate II 3421 to the granular catalyst II 3425 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.

[0038] The above-mentioned granular catalyst II 3425 and the granular catalyst I 3415 both adopt a compatible composite catalyst, and the heating temperature is controlled at 400-500°C.

[0039] In the specific arrangement, 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 in communication with the diffusion shell 242, the front end of the dispersion pipe 241 is in communication with the distributor 23, and the tail end of the diffusion shell 242 is in communication with the front end of the inner flow guide shell 33. The dispersion pipe 241 is in the form of a circular truncated cone structure with a gradually increasing diameter from front to back. The circular truncated cone structure of the dispersion pipe 241 causes the flow rate of the inflowing hydrocarbon-containing gas to gradually slow down. The hydrocarbon-containing gas entering the diffusion shell 242 from the dispersion pipe 241 enters a larger space inside, and the flow rate of the hydrocarbon-containing gas flowing into the diffusion shell 242 becomes slower. The slowly flowing hydrocarbon-containing gas is more easily catalytically treated by the internal catalyst in the catalyst filling layer 34, thereby improving the catalytic treatment effect on the hydrocarbon-containing gas.

[0040] Specifically, please refer to Figure 3 and Figure 4 , the gas inlet assembly 2 further includes a gas inlet pipe 25, the gas inlet pipe 25 penetrates through the explosion-proof shell 1 and is in communication with the distributor 23, and an electromagnetic valve 26 is installed outside the gas inlet pipe 25. By opening the electromagnetic valve 26, non-hydrocarbon gas can be added to the inside of the distributor 23 through the gas inlet pipe 25, so that the hydrocarbon-containing gas is diluted. The mixed and diluted hydrocarbon-containing gas passing through the distributor 23 enters the inner flow guide shell 33 and the catalyst filling layer 34 for catalytic reaction through the gas diffusion pipe 24, and has a more efficient hydrocarbon removal effect.

[0041] Further, the heating and catalysis assembly 3 further includes heat-conducting fins 36 installed between the heaters 32 and the inner flow guide shell 33. The heaters 32 and the heat-conducting fins 36 are both provided in two groups on both sides of the inner flow guide shell 33. The heat-conducting fins 36 are used to conduct the heat of the heaters 32 to the inner flow guide shell 33. The arrangement of the two groups of heaters 32 and heat-conducting fins 36 makes the heating of the catalyst filling layer 34 inside the inner flow guide shell 33 relatively more uniform.

[0042] In specific arrangement, the heating and catalysis assembly 3 further includes a plurality of partition plates 35 arranged in the inner flow guide shell 33 to form a flow guide cavity in the shape of an S. The partition plates 35 divide the inner flow guide shell 33 into flow guide cavities in the shape of an S, thereby prolonging the time for the hydrocarbon-containing gas to flow through the catalyst filling layer 34 inside. This allows the hydrocarbon-containing gas to have more time to catalytically react with the catalyst filling layer 34, thereby further improving the hydrocarbon removal effect of the device.

[0043] Preferably, the explosion-proof shell 1 is provided with heat dissipation holes 11 on the side. The heat dissipation holes 11 can be used to dissipate internal heat and internal catalyzed gas.

[0044] The above-mentioned explosion-proof hydrocarbon removal device uses one-time catalytic treatment. If a smaller space can be used for secondary catalytic treatment, the treatment effect of the device on the hydrocarbon-containing gas can be further improved.

[0045] Please refer to Figure 2 , Figure 4 , Figure 9 and Figure 10 , the explosion-proof hydrocarbon removal device also includes a heat-conducting secondary catalytic assembly 4, a plurality of heat-conducting secondary catalytic assemblies 4 are installed side by side at the tail end of the outer cover box shell 31, and the coil section 22 penetrates through the heat-conducting secondary catalytic assembly 4. The heat-conducting secondary catalytic assembly 4 includes a tail end flow guide shell 41, a catalyst structure layer 42, and a flow guide dispersion self-adjusting piece 43. Two sets of flow guide dispersion self-adjusting pieces 43 are symmetrically arranged at the front flow guide port inside the tail end flow guide shell 41, and the catalyst structure layer 42 is arranged inside the tail end flow guide shell 41 at the rear side of the flow guide dispersion self-adjusting piece 43. The flow guide dispersion self-adjusting piece 43 includes a front flow guide plate 431, a rear flow guide plate 432, an elastic connecting plate 433, and an arc-shaped flow resistance plate 434. The front flow guide plate 431, the rear flow guide plate 432, the elastic connecting plate 433, and the flow resistance plate 434 are integrally formed, and the elastic connecting plate 433 and the flow resistance plate 434 are respectively located on both sides of the front flow guide plate 431. The elastic connecting plate 433 is connected with the inner wall of the tail end flow guide shell 41, and the rear flow guide plate 432 is arranged at the rear side of the front flow guide plate 431 and is inclined to be close to the inner wall of the tail end flow guide shell 41.

[0046] The gas treated by the catalyst filling layer 34 inside the inner flow guide shell 33 passes through the flow guide ports at the front end of the tail end flow guide shell 41, enters the tail end flow guide shell 41 through the gap between the front flow guide plates 431 of the two sets of flow guide dispersion self-adjusting pieces 43, and reacts with the catalyst structure layer 42. That is, the secondary catalytic reaction treatment of the hydrocarbon-containing gas is realized, and the treatment effect of the device on the hydrocarbon-containing gas is further improved. When the front flow guide plates 431 at the front end of the tail end flow guide shell 41, the flow resistance plates 434 can block part of the gas, and under the action of the flow resistance plates 434, the forced flow resistance plates 434 will move and deflect backward around the elastic connecting plates 433, so that the gap between the two rear flow guide plates 432 increases. The gas flowing between the two front flow guide plates 431 enters a larger space, that is, the flow rate of the hydrocarbon-containing gas entering the tail end flow guide shell 41 is reduced and becomes slow, and the catalyst structure layer 42 inside the tail end flow guide shell 41 has more time to contact the hydrocarbon-containing gas, thereby improving the treatment efficiency of the hydrocarbon-containing gas.

[0047] Secondly, the tail end flow guide shell 41 is made of a plate material with good heat conductivity. The heat of the first catalytic gas can be absorbed and conducted to the coil section 22 through the tail end flow guide shell 41, so that the hydrocarbon-containing gas inside the coil section 22 is better preheated. Moreover, the tail end flow guide shell 41 is made of a plate material with good heat conductivity, so that the catalyst structure layer 42 inside the tail end flow guide shell 41 can better preheat the residual hydrocarbon-containing gas in the treated gas.

[0048] The catalyst structure layer 42 can also be the catalyst filling layer 34 in the above two embodiments, and the catalyst filling layer 34 in the two embodiments, that is, the stacked shunt filling structure or the honeycomb shunt filling structure, can better perform secondary catalysis on the hydrocarbon-containing gas. The hydrocarbon removal efficiency of the hydrocarbon removal device is further improved.

[0049] When the hydrocarbon-containing gas in the above explosion-proof hydrocarbon removal device passes through the gas diffusion pipe 24, the hydrocarbon-containing gas can be slowed down to a certain extent, but the slow flow effect is greatly reduced for the hydrocarbon-containing gas with a faster speed.

[0050] Please refer to Figure 4 , Figure 11 and Figure 12 , the explosion-proof hydrocarbon removal device also includes a flow blocking and speed reducing assembly 5, which includes an outer cylinder shell 51, a tail shell 52 and an elastic connecting part 53. The outer cylinder shell 51 is fixedly embedded at the tail end of the dispersion pipe 241, the tail shell 52 is located at the rear side of the outer cylinder shell 51, and the elastic connecting part 53 connects the outer cylinder shell 51 and the tail shell 52. The elastic connecting part 53 includes a connecting rod 531, a sleeve ring 532, a connecting piece 533, a shunt cap 534 and a spring 535. The shunt cap 534 is arranged at one end of the connecting rod 531, and the other end of the connecting rod 531 is fixedly connected with the inner bottom wall of the tail shell 52. The sleeve ring 532 is slidably sleeved on the outside of the connecting rod 531, the connecting piece 533 connects the sleeve ring 532 and the inner wall of the outer cylinder shell 51, and the spring 535 is sleeved on the outside of the connecting rod 531 between the sleeve ring 532 and the shunt cap 534.

[0051] If the hydrocarbon-containing gas enters the distributor 23 through the gas inlet pipe 21, the distributor 23 can adjust the flow of the hydrocarbon-containing gas flowing into the gas diffusion pipe 24. When the hydrocarbon-containing gas flowing into the dispersion pipe 241 flows at a faster speed, the flowing hydrocarbon-containing gas will impact the inside of the tail shell 52 through the inside of the outer cylinder shell 51. The inside of the tail shell 52 will buffer the part of the gas entering the diffusion shell 242 after being impacted by the hydrocarbon-containing gas, so as to achieve the effect of buffering the fast-flowing gas. When the tail shell 52 is impacted by the fast-flowing hydrocarbon-containing gas, the spring 535 in the elastic connecting part 53 will be compressed to play a buffering role. The flow rate of the hydrocarbon-containing gas in the dispersion pipe 241 can be appropriately slowed down by cooperating with the outer cylinder shell 51 and the tail shell 52, the catalytic reaction time of the subsequent hydrocarbon-containing gas and the catalyst filling layer 34 is increased, and the catalytic hydrocarbon removal efficiency is improved.

[0052] It should be noted that the inside of the explosion-proof housing 1 should be adapted to the corresponding temperature sensor, the outside of the explosion-proof housing 1 is provided with the corresponding control panel and adjusting switch, this design scheme is the structure commonly used in the existing hydrocarbon removal device, here will not be described. The specific type of the above-mentioned electromagnetic valve 26 and the heater 32 needs to be determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the art, so it will not be described in detail. The power supply of the electromagnetic valve 26 and the heater 32 and its principle are clear to those skilled in the art, and will not be described in detail here.

[0053] The above only describes the embodiments of the present application and does not limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0054] The above only describes the embodiments of the present application and does not limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0054] The above only describes the embodiments of the present application and does not limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

Claims

1. An explosion-proof hydrocarbon removal device, characterized in that: include: An explosion-proof housing (1) and an air guide and air intake assembly (2), wherein the air guide and air intake assembly (2) is installed inside the explosion-proof housing (1), and the air guide and air intake assembly (2) comprises an air intake pipe (21), a distributor (23), and a gas diffusion pipe (24), wherein the distributor (23) is connected to the air intake pipe (21) and the gas diffusion pipe (24), respectively; A heating catalytic component (3) includes an outer cover shell (31), a heater (32) and an inner guide shell (33), wherein the inner guide shell (33) is located inside the outer cover shell (31), and the front end of the inner guide shell (33) is connected to the rear 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 cover shell (31) and the inner guide shell (33) to heat the catalyst filling layer (34), the air intake pipe (21) located inside the explosion-proof housing (1) is coiled outside the outer cover shell (31), the air intake pipe (21) is provided with a coil section (22), and the coil section (22) is provided at the rear end of the outer cover shell (31).

2. The explosion-proof hydrocarbon removal device according to claim 1, characterized in that: The catalyst filling layer (34) is a stacked diversion filling structure, which includes an outer shell plate I (3411), a vertical strip plate (3412), a diversion end plate (3413) and a wave plate (3414). The diversion end plate (3413) is arranged at the front end of the wave plate (3414), and the diversion end plate (3413) and the wave plate (3414) are arranged inside the outer shell plate I (3411). Multiple groups of the vertical strip plates (3412) are respectively fixed to the top and bottom of the inner shell plate I (3411), and the vertical strip plates (3412) extend to the recessed area of ​​the wave plate (3414). The inner shell plate I (3411) is filled with granular 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 diversion filling structure, which includes an outer shell plate II (3421) and a honeycomb block. The honeycomb block is arranged inside the outer shell plate II (3421), and a front honeycomb hole (3422) is arranged inside the honeycomb block. The two sides of the tail end and the oblique rear side of the front honeycomb hole (3422) are respectively provided with connected side honeycomb holes (3424) and oblique rear honeycomb holes (3423). The ends of the oblique rear honeycomb holes (3423) and the side honeycomb holes (3424) are further arranged to be connected to another group of front honeycomb holes (3422). Granular catalyst II (3425) is arranged inside the front honeycomb holes (3422), the oblique rear honeycomb holes (3423), and the side honeycomb holes (3424).

4. The explosion-proof hydrocarbon removal device according to claim 1, characterized in that: The gas diffusion pipe (24) comprises a dispersion pipe (241) and a diffusion shell (242); the rear 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 rear 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) is a truncated cone-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 guide and intake assembly (2) further includes an air filling pipe (25), the air filling pipe (25) passing through the explosion-proof housing (1) and communicating with the distributor (23), and an electromagnetic valve (26) is installed outside the air filling pipe (25).

7. The explosion-proof hydrocarbon removal device according to claim 1, characterized in that: The heating catalytic assembly (3) further comprises a heat-conducting fin plate (36), and the heat-conducting fin plate (36) is installed between the heater (32) and the inner 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 groups 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 component (3) further comprises a partition plate (35), and a plurality of groups of partition plates (35) are arranged in the internal structure of the inner guide shell (33) to form a guide cavity with an S-shaped structure.

10. The explosion-proof hydrocarbon removal device according to claim 1, characterized in that: The side of the explosion-proof housing (1) is provided with heat dissipation holes (11).

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