Sampling VOC (volatile organic compound) carrier

Abstract

The invention relates to a VOC carrier capable of sampling, and relates to the field of tail gas treatment, a honeycomb carrier comprises a fixed carrier and a sampling carrier, the fixed carrier is provided with a sampling hole, and the fixed carrier is fixedly connected with a connecting cylinder inserted into the sampling hole; the sampling carrier is inserted into the connecting cylinder, a catalyst layer structure is arranged between the sampling carrier and the connecting cylinder so as to catalyze VOC flowing through the space between the sampling carrier and the connecting cylinder, and the sampling cylinder is detachably connected with the connecting cylinder through a connecting assembly. The sampling carrier is pulled out of the connecting cylinder for detection, so that the condition of the residual amount of the whole honeycomb carrier catalyst is judged, the whole honeycomb carrier can be prevented from being disassembled, and the detection convenience of the residual amount of the VOC carrier catalyst is improved.

Description

Technical Field

[0001] The present application relates to the field of tail gas treatment, and in particular to a sampleable VOC carrier. Background Art

[0002] Catalysts are substances that can accelerate the rate of chemical reactions and are widely used in industrial production and environmental protection. Catalyst carriers, as carriers of catalysts, play a vital role. VOC carriers can be used for catalytic oxidation of VOCs (volatile organic compounds), converting harmful VOCs into harmless carbon dioxide and water to reduce air pollution.

[0003] The existing VOC carrier includes an outer shell and a honeycomb core. The honeycomb core is installed in the outer shell, and the catalyst is coated in the honeycomb core. When VOC passes through the honeycomb core, it is converted into harmless carbon dioxide and water under the catalysis of the catalyst, completing the VOC treatment. However, in daily use of the VOC carrier, it is necessary to detect the remaining amount of catalyst on the VOC carrier and sample the VOC carrier. The existing VOC carrier requires the entire honeycomb core to be disassembled for testing, which makes it very inconvenient to detect the remaining amount of catalyst in the VOC carrier. Summary of the invention

[0004] In order to improve the problem that the entire honeycomb core of the VOC carrier needs to be disassembled to detect the remaining amount of catalyst, which makes the detection of the remaining amount of catalyst in the VOC carrier very inconvenient, the present application provides a sampleable VOC carrier.

[0005] The present application provides a sampleable VOC carrier using the following technical solution: A sampleable VOC carrier comprises a shell and a honeycomb carrier, wherein the honeycomb carrier comprises a fixed carrier and a sampling carrier, wherein a sampling hole is provided on the fixed carrier, and a connecting tube inserted into the sampling hole is fixedly connected to the fixed carrier; The sampling carrier is inserted into the connecting cylinder, and a catalytic layer structure is provided between the sampling carrier and the connecting cylinder so as to catalyze the VOC flowing between the sampling carrier and the connecting cylinder. The sampling cylinder and the connecting cylinder are detachably connected via a connecting assembly.

[0006] By adopting the above technical solution, when the honeycomb carrier is in use, the sampling carrier is inserted into the connecting tube, and then connected to the connecting tube through the connecting component, so as to be spliced ​​with the fixed carrier to form a completed honeycomb carrier for use. When sampling and testing the honeycomb carrier, the sampling carrier and the fixed carrier are disassembled through the connecting component, and then the sampling carrier is pulled out of the connecting tube for testing, so as to judge the remaining amount of the catalyst in the entire honeycomb carrier, thereby avoiding disassembly of the entire honeycomb carrier and improving the convenience of detecting the remaining amount of the VOC carrier catalyst.

[0007] In a specific embodiment, the sampling carrier includes a shell and a core, and the core is fixedly arranged inside the shell; The catalytic layer structure includes a plurality of catalytic sheets capable of being coated with catalysts. The plurality of catalytic sheets are fixedly arranged on the inner wall of the connecting tube and are evenly arranged along the circumference of the connecting tube. The shell is slidably connected to each of the catalytic sheets.

[0008] By adopting the above technical solution and utilizing the setting of the catalyst sheet, an installation space is provided for the connecting assembly, so that the VOC between the shell and the connecting tube can be catalytically treated by the catalyst on the catalyst sheet; when the shell expands thermally, the catalyst sheet can be squeezed to deform, thereby avoiding the phenomenon of jamming when the shell directly contacts the connecting tube, and facilitating the disassembly of the sampling carrier.

[0009] In a specific possible implementation manner, the catalyst sheet is wavy along the radial direction of the connecting tube.

[0010] By adopting the above technical solution, the catalyst sheet is set to be wavy, which can increase the contact area between the catalyst and VOC and improve the treatment effect of VOC; on the other hand, it makes the deformation of the catalyst sheet more regular and reduces the amount of catalyst dropped due to the deformation of the catalyst sheet.

[0011] In a specific possible implementation scheme, the connecting assembly includes a mounting plate, a connecting piece and an elastic fixing member. The mounting plate is fixedly arranged on the inner wall of the connecting cylinder and is located at the tail end of the connecting cylinder and opposite to the catalytic plate. The connecting piece is fixedly arranged on the shell. The elastic fixing member is arranged on the connecting cylinder and can pull the connecting piece to be tightly fixed on the mounting plate.

[0012] By adopting the above technical solution, when installing the sampling carrier, the sampling carrier is inserted into the connecting tube, the connecting plate passes through the catalytic plate and slides to the mounting plate, and then the elastic fixing part is connected to the connecting plate, and the connecting plate is pressed against the mounting plate, thereby realizing the installation of the sampling carrier; when disassembling the sampling carrier, the elastic fixing part and the connecting plate are removed, and then the sampling carrier is pulled out of the connecting tube to complete the disassembly of the sampling carrier, thereby improving the convenience of disassembly and assembly of the sampling carrier.

[0013] In a specific possible implementation scheme, the connecting plate includes a first fixing portion and a second fixing portion, the mounting plate is provided with a mounting hole for the second fixing portion to pass through, and the elastic fixing member is detachably connected to the second fixing portion so as to be able to pull the first fixing portion tightly against the mounting plate.

[0014] By adopting the above technical solution, when the connecting piece is tightened and fixed, the elastic fixing part pulls the second fixing part, so that the first fixing part is tightly fixed on the mounting plate. Through the abutment between the first fixing part and the mounting plate, the back pressure on both sides of the honeycomb carrier can further push the first fixing part to be pressed against the mounting plate, thereby improving the stability of the sampling carrier installation.

[0015] In a specific possible implementation manner, a buffer gap is left between the hole wall of the mounting hole and the second fixing portion.

[0016] By adopting the above technical solution and utilizing the setting of the buffer gap, it is possible to effectively avoid the phenomenon that the first fixing part is stuck with the mounting plate during thermal expansion, thereby facilitating the disassembly of the sampling carrier.

[0017] In a specific possible implementation scheme, the elastic fixing member includes a fixing plate and a fixing spring. The fixing plate is fixedly arranged on the inner wall of the connecting tube and is located downstream of the mounting plate. One end of the fixing spring is fixedly connected to the fixing plate, and the other end is detachably connected to the second fixing part via a hook structure.

[0018] By adopting the above technical solution, one end of the fixed spring is connected to the fixed plate, and the other end is connected to the second fixed part through a hook structure, and the sampling carrier is fixed by its own elastic contraction. At the same time, when the first fixed part expands thermally, the fixed spring elastically stretches to adapt to the thermal expansion of the first fixed part.

[0019] In a specific possible implementation scheme, the hooking structure includes a hook hole and a connecting hook, the connecting hook is fixed on the fixing spring, the hook hole is opened on the second fixing part, and the connecting hook can be inserted into or pulled out of the hook hole so that the fixing spring can be detachably connected to the second fixing part.

[0020] By adopting the above technical solution, when the first fixing part is pressed against the mounting plate, the operator pulls the fixing spring to extend and inserts the connecting hook into the hook hole, so that the fixing spring is connected to the connecting piece to fix the sampling carrier; the connecting hook is removed from the hook hole to complete the disassembly of the fixing spring and the connecting piece, and at the same time, the disassembly of the sampling carrier and the connecting tube is completed, thereby improving the convenience of disassembly and assembly of the connecting tube and the sampling carrier.

[0021] In a specific possible implementation manner, a gap is left between the hole wall of the hook hole and the connecting hook.

[0022] By adopting the above technical solution and utilizing the gap between the hook hole and the connecting hook, it is possible to avoid the connecting hook from getting stuck due to thermal expansion.

[0023] In a specific possible implementation manner, a guide surface is provided at the front end of the catalyst sheet, and the distance from the guide surface to the inner side wall of the connecting tube gradually increases along the VOC flow direction.

[0024] By adopting the above technical solution, the sampling carrier is guided by the guide surface, so that the insertion and connection between the sampling carrier and a plurality of catalytic sheets is facilitated.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the honeycomb carrier is in use, the sampling carrier is inserted into the connecting cylinder, and then connected to the connecting cylinder through the connecting assembly, so as to be spliced ​​with the fixed carrier to form a completed honeycomb carrier for use. When sampling and testing the honeycomb carrier, the sampling carrier and the fixed carrier are disassembled through the connecting assembly, and then the sampling carrier is pulled out of the connecting cylinder for testing, so as to judge the remaining amount of the catalyst of the entire honeycomb carrier, thereby avoiding the disassembly of the entire honeycomb carrier and improving the convenience of detecting the remaining amount of the VOC carrier catalyst; 2. The setting of the catalyst sheet is used to provide installation space for the connection assembly, so that the VOC between the shell and the connection tube can be catalytically treated by the catalyst on the catalyst sheet; when the shell generates thermal expansion, the catalyst sheet can be squeezed to produce deformation, thereby avoiding the phenomenon of the shell being stuck when it directly contacts the connection tube, and facilitating the disassembly of the sampling carrier; 3. When the connecting piece is tightened and fixed, the fixing spring pulls the second fixing part, so that the first fixing part is tightly fixed on the mounting plate. Through the abutment between the first fixing part and the mounting plate, the back pressure on both sides of the honeycomb carrier can further push the first fixing part to be pressed against the mounting plate, thereby improving the stability of the sampling carrier installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of a sampleable VOC carrier according to an embodiment of the present application.

[0027] Figure 2 is along Figure 1 Section view along line AA.

[0028] Figure 3 yes Figure 2 Enlarged view of part B in the middle.

[0029] Figure 4 It is a schematic diagram for showing the structure of the connecting tube.

[0030] Figure 5 yes Figure 4 Enlarged view of part C in the middle.

[0031] Explanation of the reference numerals: 1. outer shell; 2. honeycomb carrier; 21. fixed carrier; 221. shell; 222. core body; 22. sampling carrier; 23. sampling hole; 3. connecting tube; 4. catalyst layer structure; 41. catalyst sheet; 42. guide surface; 5. connecting assembly; 51. mounting plate; 511. mounting hole; 512. buffer gap; 52. connecting sheet; 521. first fixing part; 522. second fixing part; 53. elastic fixing part; 531. fixing plate; 532. fixing spring; 54. hooking structure; 541. hook hole; 542. connecting hook. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-5 This application is described in further detail.

[0033] The embodiments of the present application disclose a sampleable VOC carrier.

[0034] Reference Figure 1 A sampleable VOC carrier includes a shell 1 and a honeycomb carrier 2. The honeycomb carrier 2 is a metal carrier made of nickel or nickel-chromium alloy. The honeycomb carrier 2 is filled with a catalyst. The catalyst is a precious metal catalyst. The precious metal catalyst uses precious metals such as platinum (Pt), palladium (Pd) and other platinum group metals as active components and is loaded on a carrier such as γ-Al2O3. The honeycomb carrier 2 includes a fixed carrier 21 and a sampling carrier 22. The honeycomb carrier 2 is an annular structure and is fixedly connected to the shell 1. A sampling hole 23 coaxially arranged with the shell 1 is opened in the middle position of the fixed carrier 21. The sampling hole 23 runs through both sides of the honeycomb carrier 2 along the flow direction of VOC. A connecting tube 3 inserted into the sampling hole 23 is fixedly connected to the fixed carrier 21, and both ends of the connecting tube 3 are opened.

[0035] Reference Figure 1 , Figure 2 The sampling carrier 22 includes a shell 221 and a core 222. The core 222 is fixedly arranged inside the shell 221. The core 222 adopts the same structure of the honeycomb carrier 2. The sampling carrier 22 is inserted into the connecting tube 3. A catalytic layer structure 4 is provided between the sampling carrier 22 and the connecting tube 3. The catalytic layer structure 4 is coated with the same catalyst as that on the honeycomb carrier 2, so as to catalyze the VOC flowing between the sampling carrier 22 and the connecting tube 3. The sampling tube and the connecting tube 3 are detachably connected through a connecting component 5.

[0036] When the honeycomb carrier 2 is in use, the sampling carrier 22 is inserted into the connecting tube 3, and then connected to the connecting tube 3 through the connecting component 5, so as to be spliced ​​with the fixed carrier 21 to form a completed honeycomb carrier 2 for use. When sampling and testing the honeycomb carrier 2, the sampling carrier 22 and the fixed carrier 21 are disassembled through the connecting component 5, and then the sampling carrier 22 is pulled out of the connecting tube 3 for testing, so as to judge the remaining amount of the catalyst of the entire honeycomb carrier 2, thereby avoiding disassembly of the entire honeycomb carrier 2 and improving the convenience of detecting the remaining amount of the VOC carrier catalyst.

[0037] Reference Figure 1 The catalytic layer structure 4 in this embodiment includes a plurality of catalytic sheets 41 capable of coating catalysts. One end of each of the catalytic sheets 41 is fixedly disposed on the inner wall of the connecting tube 3 and is evenly disposed along the circumference of the connecting tube 3. Each catalytic sheet 41 is disposed along the radial direction of the connecting tube 3, and each catalytic sheet 41 is wavy along the radial direction of the connecting tube 3. A guide surface 42 is disposed at the front end of each catalytic sheet 41, and the distance from the guide surface 42 to the inner wall of the connecting tube 3 gradually increases along the flow direction of VOC. The sampling carrier 22 is inserted into the plurality of catalytic sheets 41 along the flow direction of VOC, and the sampling carrier 22 is guided by the guide surface 42, so as to facilitate the insertion of the sampling carrier 22 and the plurality of catalytic sheets 41.

[0038] Since the housing 221 is made of metal structure, the VOC treatment environment is a high temperature environment. At this time, the housing 221 is heated to generate thermal expansion. When the housing 221 generates thermal expansion, it can squeeze the catalyst sheet 41 to produce deformation, thereby avoiding the phenomenon of the housing 221 being stuck when it directly contacts the connecting tube 3, and facilitating the disassembly of the sampling carrier 22. The catalytic sheet 41 is arranged in a wavy shape, which can increase the contact area between the catalyst and the VOC and improve the VOC treatment effect; on the other hand, it makes the deformation of the catalytic sheet 41 more regular.

[0039] Reference Figure 2 , Figure 3 In this embodiment, there are two connecting components 5, and the two connecting components 5 are arranged opposite to each other along the circumference of the connecting tube 3. The connecting components 5 include a mounting plate 51, a connecting sheet 52 and an elastic fixing member 53. The mounting plate 51 is fixedly arranged on the inner wall of the connecting tube 3 and is located at the tail of the connecting tube 3 and opposite to the catalyst sheet 41. The two mounting plates 51 are arranged at intervals to ensure that the exhaust gas flowing through the connecting tube 3 and the shell 221 can flow out, thereby reducing the back pressure generated by the entire honeycomb carrier 2.

[0040] Reference Figure 2 , Figure 3The connecting piece 52 is fixedly arranged on the outer side wall of the shell 221 and is arranged along the radial direction of the shell 221. The connecting piece 52 in this embodiment includes a first fixing portion 521 and a second fixing portion 522. The first fixing portion 521 is a structure formed by the connecting piece 52 extending along the radial direction of the shell 221, and the second fixing portion 522 is a structure formed by the connecting piece 52 extending along the axial direction of the shell 221, so that a right-angle notch is formed at the connection between the first fixing portion 521 and the second fixing portion 522.

[0041] Reference Figure 2 , Figure 3 The mounting plate 51 is provided with a mounting hole 511, and the second fixing portion 522 can pass through the mounting hole 511, so that the first fixing portion 521 abuts against the mounting plate 51. The length of the mounting hole 511 is greater than the length of the second fixing portion 522 in this direction, so that a buffer gap 512 is left between the hole wall of the mounting hole 511 and the second fixing portion 522. The setting of the buffer gap 512 can effectively avoid the phenomenon that the first fixing portion 521 is stuck with the mounting plate 51 when it expands thermally, and facilitates the disassembly of the sampling carrier 22.

[0042] Reference Figure 4 , Figure 5 The elastic fixing member 53 in this embodiment includes a fixing plate 531 and a fixing spring 532. The fixing plate 531 is fixedly arranged on the inner wall of the connecting tube 3 and is located downstream of the mounting plate 51. The fixing spring 532 is located between the fixing plate 531 and the mounting plate 51. One end of the fixing spring 532 is fixedly connected to the fixing plate 531, and the other end is detachably connected to the second fixing portion 522 through a hook structure 54. The hook structure 54 in this embodiment includes a hook hole 541 and a connecting hook 542. The connecting hook 542 is a hook-shaped structure formed by bending the end of the fixing spring 532. The hook hole 541 is opened at one end of the second fixing part 522 that passes through the mounting plate 51. The connecting hook 542 can be inserted into or pulled out of the hook hole 541, so that the fixing spring 532 can be detachably connected to the second fixing part 522. A gap is left between the hole wall of the hook hole 541 and the connecting hook 542. The gap between the hook hole 541 and the connecting hook 542 can be used to prevent the connecting hook 542 from getting stuck due to thermal expansion.

[0043] When installing the sampling carrier 22, the sampling carrier 22 is inserted into the connecting tube 3, the connecting sheet 52 passes through the catalytic sheet 41 and slides to the mounting plate 51, and then the second fixing portion 522 passes through the mounting hole 511, and then the operator pulls the fixing spring 532 to extend, so that the fixing spring 532 generates an initial tension, and then the connecting hook 542 is hooked in the hook hole 541, and then the fixing spring 532 pulls the first fixing portion 521 to be tightly fixed on the mounting plate 51, completing the fixing of the sampling carrier 22 and the connecting tube 3. At the same time, the back pressure on both sides of the honeycomb carrier 2 can further push the first fixing portion 521 to be pressed against the mounting plate 51, thereby improving the stability of the installation of the sampling carrier 22.

[0044] When disassembling the sampling carrier 22 for sampling, the operator pulls out the connecting hook 542 from the hook hole 541, so that the fixing spring 532 and the connecting piece 52 are disassembled, and then the sampling carrier 22 is pulled out of the connecting tube 3 to complete the disassembly of the sampling carrier 22, thereby improving the convenience of disassembly and assembly of the sampling carrier 22. When the first fixing part 521 is thermally expanded, the fixing spring 532 elastically extends to adapt to the thermal expansion of the first fixing part 521, thereby improving the adaptability of the connection structure at high temperatures.

[0045] The implementation principle of a sampleable VOC carrier in an embodiment of the present application is as follows: when the honeycomb carrier 2 is in use, the sampling carrier 22 is inserted into the connecting tube 3, the connecting sheet 52 passes through the catalytic sheet 41 and slides to the mounting plate 51, and then the second fixing portion 522 passes through the mounting hole 511, and then the operator pulls the fixing spring 532 to extend, so that the fixing spring 532 generates an initial pulling force, and then the connecting hook 542 is hooked into the hook hole 541, and then the fixing spring 532 pulls the first fixing portion 521 to be tightly fixed on the mounting plate 51, completing the fixation of the sampling carrier 22 and the connecting tube 3, so as to be spliced ​​with the fixing carrier 21 to form a completed honeycomb carrier 2 for use.

[0046] When sampling and testing the honeycomb carrier 2, the operator pulls out the connecting hook 542 from the hook hole 541, so that the fixing spring 532 and the connecting plate 52 are removed, and then the sampling carrier 22 is pulled out of the connecting tube 3 for testing, so as to judge the remaining amount of the catalyst in the entire honeycomb carrier 2, thereby avoiding disassembly of the entire honeycomb carrier 2 and improving the convenience of detecting the remaining amount of the VOC carrier catalyst.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sampleable VOC carrier, comprising a housing (1) and a honeycomb carrier (2), characterized in that: The honeycomb carrier (2) comprises a fixed carrier (21) and a sampling carrier (22); a sampling hole (23) is provided on the fixed carrier (21); and a connecting tube (3) inserted into the sampling hole (23) is fixedly connected to the fixed carrier (21); The sampling carrier (22) is inserted into the connecting tube (3), and a catalytic layer structure (4) is provided between the sampling carrier (22) and the connecting tube (3) so as to be able to catalytically treat the VOC flowing between the sampling carrier (22) and the connecting tube (3), and the sampling tube and the connecting tube (3) are detachably connected via a connecting assembly (5).

2. The sampleable VOC carrier according to claim 1, characterized in that: The sampling carrier (22) comprises a shell (221) and a core (222), wherein the core (222) is fixedly arranged inside the shell (221); The catalytic layer structure (4) comprises a plurality of catalytic sheets (41) capable of being coated with catalysts, the plurality of catalytic sheets (41) being fixedly arranged on the inner wall of the connecting tube (3) and evenly arranged along the circumference of the connecting tube (3), and the shell (221) being slidably connected to each of the catalytic sheets (41).

3. The sampleable VOC carrier according to claim 2, characterized in that: The catalytic sheet (41) is wavy along the radial direction of the connecting tube (3).

4. The sampleable VOC carrier according to claim 2, characterized in that: The connecting assembly (5) comprises a mounting plate (51), a connecting sheet (52) and an elastic fixing member (53); the mounting plate (51) is fixedly arranged on the inner wall of the connecting cylinder (3) and is located at the rear of the connecting cylinder (3) and is opposite to the catalytic sheet (41); the connecting sheet (52) is fixedly arranged on the shell (221); the elastic fixing member is arranged on the connecting cylinder (3) and is capable of pulling the connecting sheet (52) to be tightly fixed on the mounting plate (51).

5. The sampleable VOC carrier according to claim 4, characterized in that: The connecting piece (52) comprises a first fixing portion (521) and a second fixing portion (522); a mounting hole (511) is provided on the mounting plate (51) for the second fixing portion (522) to pass through; the elastic fixing member (53) is detachably connected to the second fixing portion (522) so as to be able to pull the first fixing portion (521) to press against the mounting plate (51).

6. The sampleable VOC carrier according to claim 5, characterized in that: A buffer gap (512) is left between the hole wall of the mounting hole (511) and the second fixing portion (522).

7. The sampleable VOC carrier according to claim 5, characterized in that: The elastic fixing member (53) comprises a fixing plate (531) and a fixing spring (532); the fixing plate (531) is fixedly arranged on the inner wall of the connecting tube (3) and is located downstream of the mounting plate (51); one end of the fixing spring (532) is fixedly connected to the fixing plate (531), and the other end is detachably connected to the second fixing portion (522) via a hook structure (54).

8. The sampleable VOC carrier according to claim 7, characterized in that: The hook structure (54) includes a hook hole (541) and a connecting hook (542), wherein the connecting hook (542) is fixedly arranged on the fixing spring (532), and the hook hole (541) is opened on the second fixing part (522), and the connecting hook (542) can be inserted into or pulled out of the hook hole (541) so that the fixing spring (532) can be detachably connected to the second fixing part (522).

9. The sampleable VOC carrier according to claim 8, characterized in that: A gap is left between the hole wall of the hook hole (541) and the connecting hook (542).

10. The sampleable VOC carrier according to claim 2, characterized in that: A guide surface (42) is provided at the front end of the catalytic sheet (41), and the distance from the guide surface (42) to the inner wall of the connecting tube (3) gradually increases along the VOC flow direction.

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