Marine gas engine methane escape treatment device

Abstract

The utility model discloses a ship gas engine methane escape treatment device which comprises a barrel, a methane catalyst is installed in the barrel, the barrel comprises an outer shell plate and an inner shell plate, the outer shell plate and the inner shell plate are hollow cylinders, heat insulation cotton is filled between the outer shell plate and the inner shell plate, one end of the barrel is connected with a gas inlet pipe, and the other end of the barrel is connected with a gas outlet pipe. The methane escape treatment device for the ship gas engine is suitable for exhaust pipes of different specifications, meanwhile, the flow guide effect is achieved, sufficient reaction of methane is facilitated, and the content of methane in waste gas is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas engine tail gas treatment, in particular to a methane escape treatment device for ship gas engines. Background Art

[0002] In recent years, with the continued concern about air pollution, the search for low-carbon, clean fuels as ship power energy has become a hot topic of current research. Gas engines are generally considered to be the most realistic development direction at present. Compared with traditional fuel oil, the use of natural gas fuel can reduce ship CO2 emissions by 20% to 30%, NOx emissions by 80% to 85%, and SOx and PM emissions by 99%. Therefore, under the continuous promotion of emission regulations, gas engines have become a hot spot in the new energy market.

[0003] Although the NOx, SO2 and PM emissions of gas engines have dropped significantly, the main component of natural gas is methane. There is methane emission during the natural gas combustion process, which will cause methane escape problems. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a ship gas machine methane escape control device, which can effectively reduce the methane content in the exhaust gas and effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a ship gas engine methane escape control device, comprising a cylinder, in which a methane catalyst is installed, the cylinder comprising an outer shell plate and an inner shell plate, the outer shell plate and the inner shell plate are both hollow cylinders, and the space between the outer shell plate and the inner shell plate is filled with heat insulation cotton, one end of the cylinder is connected to the air intake pipe, and the other end of the cylinder is connected to the exhaust pipe.

[0006] As a preferred technical solution of the utility model, the cylinder is a segmented structure, and the two halves of the cylinder are connected by a second bolt.

[0007] As a preferred technical solution of the utility model, second flanges are respectively provided on the outer side surfaces at both ends of the cylinder, and the two ends of the cylinder are respectively connected to the intake pipe and the exhaust pipe through a reducer, and the two ends of the reducer are respectively provided with a first flange, and the second flange is connected to the first flange through a first bolt and a nut.

[0008] As a preferred technical solution of the utility model, a boss is provided at one inner end of the inner shell plate.

[0009] As a preferred technical solution of the utility model, a second sealing gasket is installed between the two half sections of the cylinder.

[0010] As a preferred technical solution of the present utility model, a first sealing gasket is installed between the first flange and the second flange.

[0011] Compared with the prior art, the beneficial effects of the utility model are: the ship gas engine methane escape control device is simple to install and reasonably designed. By installing a methane catalyst in the cylinder, the methane in the exhaust gas is reacted to generate carbon dioxide and water, which are discharged after reducing the methane content in the exhaust gas. By setting a reducer, it can be suitable for exhaust pipes of different specifications, and at the same time plays a diversion role, which is conducive to the full reaction of methane and is convenient and quick to install and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model.

[0013] In the figure: 1 first flange, 2 reducer, 3 first sealing gasket, 4 first bolt, 5 nut, 6 outer shell plate, 7 heat insulation cotton, 8 inner shell plate, 9 second sealing gasket, 10 methane catalyst, 11 second flange, 12 second bolt, 13 cylinder. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] See also Figure 1 The utility model provides a technical solution: a ship gas engine methane escape control device, including a cylinder 13, a methane catalyst 10 is installed in the cylinder 13, the cylinder 13 includes an outer shell plate 6 and an inner shell plate 8, the outer shell plate 6 and the inner shell plate 8 are both hollow cylinders, in order to save costs, the outer shell plate 6 is made of ordinary steel material, the inner shell plate 8 is made of stainless steel material due to direct contact with the exhaust gas, the outer shell plate 6 and the inner shell plate 8 are filled with heat insulation cotton 7, the heat insulation cotton 7 is provided to play a role in heat preservation to avoid heat loss, one end of the cylinder 13 is connected to the intake pipe, and the other end of the cylinder 13 is connected to the exhaust pipe.

[0016] In order to facilitate the installation of the methane catalyst, the cylinder 13 is a segmented structure. First, half of the methane catalyst 10 is installed in one segment of the cylinder, and then the other segment is installed. The two segments are connected by a second bolt 12.

[0017] In order not to be restricted by the exhaust pipe diameter, second flanges 11 are respectively provided on the outer side surfaces at both ends of the cylinder 13. The two ends of the cylinder are respectively connected to the intake pipe and the exhaust pipe through a reducer 2. The two ends of the reducer 2 are respectively provided with a first flange 1. The second flange 11 is connected to the first flange 1 by a first bolt 4 and a nut 5. The diameter reduction of the reducer 2 is suitable for exhaust pipes of various specifications and is universal in use. It also plays a guiding role, which is conducive to a more complete reaction of methane.

[0018] In order to limit the position of the methane catalyst 10, a boss is provided at one end of the inner shell plate 8 for mounting the methane catalyst 10 to prevent the methane catalyst 10 from moving, and no boss is provided at the other end.

[0019] In order to improve the sealing performance, a second sealing gasket 9 is installed between the two half sections of the cylinder, and a first sealing gasket 3 is installed between the first flange 1 and the second flange 11.

[0020] When in use: one end of the methane catalyst 10 is placed into the end with the boss in the cylinder 13, and then the other section of the cylinder is put on. The two sections of the cylinder are connected by a second bolt 12, and then the second flanges 11 at both ends of the cylinder 13 are respectively connected to the first flanges 1 on the two reducers 2 by first bolts 4, and the two reducers 2 are respectively connected to the intake pipe and the exhaust pipe.

[0021] The utility model is quick and easy to install. By setting the reducer 2, it can be suitable for installation and use in exhaust pipes of different specifications. The methane in the exhaust gas is fully reacted with the methane catalyst 10 to be converted into a large amount of carbon dioxide and water, which greatly reduces the methane content in the exhaust gas and meets environmental protection standards.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ship gas methane escape control device, characterized by: The invention comprises a cylinder (13), wherein a methane catalyst (10) is installed in the cylinder (13), wherein the cylinder (13) comprises an outer shell plate (6) and an inner shell plate (8), wherein the outer shell plate (6) and the inner shell plate (8) are both hollow cylinders, and heat insulation cotton (7) is filled between the outer shell plate (6) and the inner shell plate (8), wherein one end of the cylinder (13) is connected to an air intake pipe, and the other end of the cylinder (13) is connected to an exhaust pipe.

2. A ship gas methane escape control device according to claim 1, characterized in that: The cylinder (13) is a segmented structure, and the two half sections of the cylinder are connected by a second bolt (12).

3. A ship gas methane escape control device according to claim 1, characterized in that: Second flanges (11) are respectively provided on the outer side surfaces of both ends of the cylinder (13); both ends of the cylinder (13) are connected to the intake pipe and the exhaust pipe respectively through a reducer (2); both ends of the reducer (2) are respectively provided with a first flange (1); the second flange (11) is connected to the first flange (1) through a first bolt (4) and a nut (5).

4. A ship gas methane escape control device according to claim 1, characterized in that: A boss is provided at one inner end of the inner shell plate (8).

5. A ship gas methane escape control device according to claim 2, characterized in that: A second sealing gasket (9) is installed between the two half sections of the cylinder.

6. A ship gas methane escape control device according to claim 3, characterized in that: A first sealing gasket (3) is installed between the first flange (1) and the second flange (11).

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