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CN-121971997-A - Catalytic device for ship tail gas denitration treatment

CN121971997ACN 121971997 ACN121971997 ACN 121971997ACN-121971997-A

Abstract

The invention discloses a catalytic device for ship tail gas denitration treatment, which relates to the technical field of tail gas denitration and comprises an SCR (selective catalytic reduction) reactor, wherein a recoil structure is arranged on the upper side of the SCR reactor, a fixed support is arranged in an array in the SCR reactor, a flexible expansion body is arranged on the lower side of the fixed support, a top block is movably arranged on the fixed support in an array manner, a linkage mechanism comprises a limiting plate, a wedge-shaped movable rod and a cam, the limiting plate is fixedly arranged on the top block, a wedge-shaped movable rod is movably inserted in the fixed support, the limiting plate is propped against the wedge-shaped movable rod, and the wedge-shaped movable rod is arranged on one side of the cam. According to the invention, the gaps after installation are filled by the expansion of the flexible expansion body, so that the tightness after the installation of the catalyst can be improved, more installation space can be provided before the expansion of the flexible expansion body, and the convenience in equipment installation and the tightness after the installation are improved.

Inventors

  • WANG ZHIMIN
  • LU MENG
  • DING MENGYUN
  • GE YUHUI
  • WANG SICHENG

Assignees

  • 宸磐环保科技(盐城)有限公司

Dates

Publication Date
20260505
Application Date
20260409

Claims (9)

  1. 1. The catalytic device for ship tail gas denitration treatment comprises an SCR reactor (1), wherein a recoil structure (2) is arranged on the upper side of the SCR reactor (1), and the catalytic device is characterized in that a fixed support (3) is arranged in the SCR reactor (1) in an array manner, a flexible expansion body (4) is arranged on the lower side of the fixed support (3), and a top block (5) is movably arranged on the fixed support (3) in an array manner; The linkage mechanism (6), the linkage mechanism (6) comprises a limiting plate (601), a wedge-shaped movable rod (602) and a cam (614), the limiting plate (601) is fixedly installed on the top block (5), the wedge-shaped movable rod (602) is movably inserted into the fixed support (3), the limiting plate (601) is propped against the wedge-shaped movable rod (602), and the wedge-shaped movable rod (602) is installed on one side of the cam (614); The utility model provides a ventilation mechanism (7), ventilation mechanism (7) include mounting box (710), rotate circle piece (711) and connect trachea (714), two sets of mounting box (710) of fixed mounting on SCR reactor (1), install rotation circle piece (711) in mounting box (710) internal rotation, fixed mounting has cam (614) on rotating circle piece (711), one side fixed mounting of mounting box (710) has connect trachea (714), the upper end of connect trachea (714) is fixed and communicates with recoil structure (2) outlet duct, connect trachea (714) and flexible inflation body (4) intercommunication.
  2. 2. The catalytic device for denitration treatment of marine tail gas according to claim 1, wherein a sealing rubber pad (8) is fixedly arranged on the lower side of the flexible expansion body (4), an air-permeable groove (9) is formed in the fixed support (3), an air inlet and outlet groove (10) is formed in the lower side of the air-permeable groove (9), the air-permeable groove (9) is communicated with the flexible expansion body (4) through the air inlet and outlet groove (10), and the lower end of the ejector block (5) is inserted into the flexible expansion body (4) and fixedly arranged on the upper side of the sealing rubber pad (8).
  3. 3. The catalytic device for ship tail gas denitration treatment according to claim 1, wherein the upper side array of the fixed support (3) is provided with a placing groove (11), the upper end of the top block (5) is clamped in the placing groove (11) and is flush with the upper end of the fixed support (3), the placing groove (11) is provided with a sealing groove (12), the top block (5) is fixedly provided with a second sealing rubber ring (13), the second sealing rubber ring (13) is inserted in the sealing groove (12), and the edge of the upper end of the top block (5) is a round corner.
  4. 4. The catalytic device for denitration treatment of marine exhaust gas according to claim 1, wherein the linkage mechanism (6) further comprises a first movable groove (603), a first connecting plate (604), a hinge rod (605), a second connecting plate (606), a guide hole (607), a guide rod (608), a limit groove (609), a limit block (610), a mounting through groove (611), a first connecting plate (612) and a return spring (613), a first movable groove (603) is formed in an inner wall of the SCR reactor (1) in an array manner, the position of the first movable groove (603) is opposite to that of the fixed support (3), a first connecting plate (604) is movably inserted in the first movable groove (603), the hinge rod (605) is rotatably mounted on the first connecting plate (604) in an array manner, a second connecting plate (606) is movably mounted on one side of the first connecting plate (604), the hinge rod (605) is rotatably mounted on the second connecting plate (606), a wedge-shaped guide hole (608) is fixedly mounted on the second connecting plate (606) in an array manner, the guide rod (608) is inserted into the guide hole (607), the first connecting plate (604) is provided with an array mounting through groove (611), the first movable groove (603) is internally provided with a limiting block (610) in an array fixing manner, and the limiting block (610) is inserted into the mounting through groove (611).
  5. 5. The catalytic device for denitration treatment of marine tail gas according to claim 4, wherein the linkage mechanism (6) further comprises a limiting block (610), a mounting through groove (611), a first connecting rod (612) and a return spring (613), the mounting through groove (611) is formed in the SCR reactor (1), the mounting through groove (611) is communicated with the first movable groove (603), the same group of first connecting rods (612) are fixedly mounted on the upper sides of the two groups of first connecting plates (604), the first connecting rods (612) move in the mounting through groove (611), two groups of return springs (613) are arranged in the mounting through groove (611), the upper sides of the return springs (613) are abutted against the upper sides of the mounting through groove (611), cams (614) are rotatably mounted in the mounting through groove (611), and the cams (614) are abutted against the lower sides of the first connecting rods (612).
  6. 6. The catalytic device for denitration treatment of marine tail gas according to claim 1, wherein the ventilation mechanism (7) further comprises a mounting bracket (701), insertion blocks (702), insertion grooves (703) and sealing rubber rings (704), the mounting bracket (701) is fixedly arranged on the inner wall of the SCR reactor (1) in an array mode, the same group of insertion blocks (702) are fixedly arranged on the two groups of mounting brackets (701), the insertion grooves (703) are formed in the fixing bracket (3), the insertion blocks (702) are inserted in the insertion grooves (703), the sealing rubber rings (704) are fixedly arranged at one ends of the fixing bracket (3), and the sealing rubber rings (704) are abutted against the opening edges of the first movable grooves (603) on the inner wall of the SCR reactor (1).
  7. 7. The catalytic device for denitration treatment of marine tail gas, as set forth in claim 6, wherein the ventilation mechanism (7) further comprises a thread groove (705), a second movable groove (706), a second connecting rod (707), a wedge extrusion block (708) and a clamping groove (709), the installation support (701) is provided with the thread groove (705) and the second movable groove (706), the installation support (701) is provided with a hexagonal screw sleeve through threads, the second connecting rod (707) is movably inserted into the second movable groove (706), wedge extrusion blocks (708) are fixedly installed on the upper side and the lower side of the second connecting rod (707), the wedge extrusion blocks (708) are propped against one side of the hexagonal screw sleeve, two groups of clamping grooves (709) are formed in the end of the fixing support (3), and the wedge extrusion blocks (708) are inserted into the clamping grooves (709).
  8. 8. The catalytic device for denitration treatment of marine tail gas according to claim 1, wherein the ventilation mechanism (7) further comprises a first sealing rubber ring (712), a first ventilation groove (713), an exhaust long groove (715), a rotating motor (716), an air pressure sensor (717) and a second ventilation groove (718), the first sealing rubber ring (712) is fixedly arranged on the outer side of the rotating round block (711), the outer side of the first sealing rubber ring (712) is abutted against the inner side of a mounting box (710), the first ventilation groove (713) is formed in the rotating round block (711), the exhaust long groove (715) is formed in one side of the mounting box (710), the rotating motor (716) is fixedly arranged on the mounting box (710), the rotating round block (711) is fixedly arranged on an output shaft of the rotating motor (716), the air pressure sensor (717) is fixedly arranged on the cam (614), the second ventilation groove (718) is formed in an array, and the second ventilation groove (718) is communicated with the first ventilation groove (713).
  9. 9. The catalytic device for denitration treatment of marine tail gas according to claim 1, wherein the wedge-shaped movable rod (602) is in a reverse-folded shape, the wedge-shaped movable rod (602) is arranged on two sides of the top block (5), reinforcing ribs are fixedly arranged on the wedge-shaped movable rod (602) in an array mode, the end head of the wedge-shaped movable rod (602) is inserted into the first movable groove (603), the wedge-shaped movable rod (602) is inserted into the ventilation long groove (9), and the distance between the upper end of the wedge-shaped movable rod (602) and the ventilation long groove (9) is matched with the thickness of the limiting plate (601).

Description

Catalytic device for ship tail gas denitration treatment Technical Field The invention relates to the technical field of tail gas denitration, in particular to a catalytic device for ship tail gas denitration treatment. Background In the field of ship tail gas denitration treatment, a selective catalytic reduction technology is mainstream because of the efficient and reliable nitrogen oxide emission reduction capability. The core of this technology is that the catalyst modules are usually mounted in modular form on a support structure inside the reactor. In order to ensure denitration efficiency, the gaps between the catalyst module and the supporting structure and between the adjacent modules must be tightly sealed, so that the condition that the emission exceeds standard due to smoke leakage or the reaction caused by ammonia leakage is not sufficient is prevented. Meanwhile, after the catalyst module runs for a long time, micropores on the surface and in the catalyst module are blocked due to dust deposition, ammonium bisulfate deposition and the like, and the catalyst module needs to be periodically disassembled and replaced or regenerated off-line, so that high requirements are provided for convenience in assembly and disassembly. At present, the installation and fixation of the catalyst module mainly adopts modes of bolt compaction or filling sealing and the like. The bolt compaction mode relies on the bolt to press the pressure plate at the module edge, though commonly used, need operate the bolt one by one during dismouting, and the bolt is often because of high temperature and deposition emergence corrosion clamping stagnation after the operation, dismantles the difficulty, and when the installation, can have the minor gap to be difficult to notice and detect, has the risk of revealing. The filling sealing mode realizes sealing by filling ceramic fiber felt and other materials in the gaps, but the materials are easy to adhere to the module in operation, and the module is easy to damage due to strong knocking and even shoveling when the module is detached. Disclosure of Invention The invention aims to provide a catalytic device for ship tail gas denitration treatment, which aims to solve the problems that a small gap is difficult to block when the existing catalyst is installed and the catalyst is difficult to disassemble after the catalyst is installed in a sealing way in the prior art. The catalytic device for ship tail gas denitration treatment comprises an SCR reactor, wherein a recoil structure is arranged on the upper side of the SCR reactor, a fixed support is arranged in the SCR reactor in an array manner, a flexible expansion body is arranged on the lower side of the fixed support, and a top block is movably arranged on the fixed support in an array manner; The linkage mechanism comprises a limiting plate, a wedge-shaped movable rod and a cam, wherein the limiting plate is fixedly arranged on the top block, the wedge-shaped movable rod is movably inserted into the fixed bracket, the limiting plate is propped against the wedge-shaped movable rod, and the wedge-shaped movable rod is arranged on one side of the cam; The ventilation mechanism comprises an installation box, a rotating round block and a connecting air pipe, wherein two groups of installation boxes are fixedly installed on the SCR reactor, the rotating round block is installed in the installation box in a rotating mode, a cam is fixedly installed on the rotating round block, one side of the installation box is fixedly provided with the connecting air pipe, the upper end of the connecting air pipe is fixedly communicated with an air outlet pipe of a recoil structure, and the connecting air pipe is communicated with a flexible expansion body. Preferably, the sealing rubber pad is fixedly arranged on the lower side of the flexible expansion body, the ventilation long groove is formed in the fixing support, the air inlet and outlet groove is formed in the lower side of the ventilation long groove, the ventilation long groove is communicated with the flexible expansion body through the air inlet and outlet groove, and the lower end of the jacking block is inserted into the flexible expansion body and is fixedly arranged on the upper side of the sealing rubber pad. Preferably, the standing groove has been seted up to the upside array of fixed bolster, the upper end block of kicking block just flushes with the upper end of fixed bolster in the standing groove, the standing groove department has all been seted up the seal groove, fixed mounting has the second seal rubber circle on the kicking block, the second seal rubber circle inserts and establishes in the seal groove, the edge of the upper end of kicking block is the fillet. Preferably, the link gear further comprises a first movable groove, a first connecting plate, a hinging rod, a second connecting plate, a guide hole, a guide rod, a limiting groove, a limiting block, a mounting thr