An inlet mixed flow pipe of a desulfurization tower

Abstract

An inlet mixed flow pipe of a desulfurization tower comprises a bottom sealing plate and a connecting plate located above the bottom sealing plate, the bottom sealing plate and the connecting plate are connected as a whole through an outer plate, and the bottom sealing plate, the connecting plate and the outer plate enclose an internal space for exhaust gas to be discharged; the bottom sealing plate is provided with a generator air inlet, a main engine air inlet and a boiler air inlet, the connecting plate is provided with an outlet, the generator air inlet, the main engine air inlet and the boiler air inlet are all provided with an air inlet pipe, and the outlet is provided at the outlet, and the center of the main engine air inlet, the center of the air inlet pipe provided at the main engine air inlet, the center of the outlet on the connecting plate and the center of the outlet are all in the same straight line. The inlet mixed flow pipe of the desulfurization tower has a small back pressure, stable exhaust, small space occupation and a simple structure.

Description

Technical Field

[0001] The invention relates to an inlet mixed flow pipe of a desulfurization tower on a ship. Background Art

[0002] With the implementation of the MARPOL Convention, in recent years, more and more ships have installed desulfurization towers to reduce the emission of sulfides in exhaust gas. However, since the diameter of the exhaust pipes of various equipment on the ship is relatively large, it is difficult to realize the convergence of the exhaust gas from the main engine, generator and boiler to the intake pipe inlet of the desulfurization tower within the limited space of the exhaust pipe. In the industry, branch pipes are usually set on a main pipe connected to the intake pipe of the desulfurization tower, and the main engine exhaust pipe, generator exhaust pipe and boiler exhaust pipe are connected to the corresponding branch pipes respectively, so that the exhaust gas converges into the main pipe and is discharged from the main pipe into the intake pipe of the desulfurization tower. Because there are many branch pipes, they occupy a large space, and the branch pipes are complicatedly arranged when entering the main pipe, which produces a large back pressure on the exhaust gas emission, affecting the normal operation of the main engine and generator. Summary of the invention

[0003] The present invention aims to provide an inlet mixed flow pipe of a desulfurization tower which has small back pressure, stable exhaust, small space occupation and simple structure.

[0004] The inlet mixed flow pipe of a desulfurization tower described in the present invention comprises a bottom sealing plate and a connecting plate located above the bottom sealing plate, the bottom sealing plate and the connecting plate are connected as a whole via an outer plate, and the bottom sealing plate, the connecting plate and the outer plate enclose an internal space for exhaust gas to be discharged; a generator air inlet, a main engine air inlet and a boiler air inlet are arranged on the bottom sealing plate, an air outlet is arranged on the connecting plate, air inlet pipes are arranged at the generator air inlet, the main engine air inlet and the boiler air inlet, and an air outlet pipe is arranged at the air outlet, and the center of the main engine air inlet, the center of the air inlet pipe arranged at the main engine air inlet, the center of the air outlet on the connecting plate and the center of the air outlet pipe are all on the same straight line.

[0005] The inlet mixed flow pipe of the desulfurization tower described in the present invention connects the main engine exhaust pipe, the generator exhaust pipe and the boiler exhaust pipe to the inlet pipe at the main engine air inlet hole, the generator air inlet hole and the boiler air inlet hole respectively, and connects the outlet pipe on the connecting plate with the inlet pipe of the desulfurization tower. The exhaust gas generated by the main engine, the generator and the boiler will enter the internal space of the inlet mixed flow pipe of the desulfurization tower through each inlet pipe, and enter the desulfurization tower from the outlet pipe on the connecting plate through the inlet pipe of the desulfurization tower. Since the exhaust pipes of the main engine, the generator and the boiler are all connected through the holes opened on the bottom sealing plate The center of the main engine air inlet, the center of the air inlet pipe arranged at the main engine air inlet, the center of the air outlet hole on the connecting plate and the center of the air outlet pipe are all in the same straight line, thereby reducing the back pressure of the exhaust gas emission and making the exhaust gas more stable. In addition, the inlet mixing pipe of the desulfurization tower has a simple structure and is easy to connect, so it is easy to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 and Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention.

[0007] Figure 3 for Figure 1 Left view of . DETAILED DESCRIPTION

[0008] An inlet mixing pipe of a desulfurization tower, such as Figure 1 value Figure 3As shown, it includes a bottom sealing plate 1 and a connecting plate 2 located above the bottom sealing plate 1, the bottom sealing plate 1 and the connecting plate 2 are connected as a whole through an outer plate, and the bottom sealing plate 1, the connecting plate 2 and the outer plate enclose an internal space for exhaust gas to be discharged; the bottom sealing plate 1 is provided with a generator air inlet, a main engine air inlet and a boiler air inlet, and the connecting plate 2 is provided with an air outlet, the generator air inlet, the main engine air inlet and the boiler air inlet are all provided with an air inlet pipe 3, and the air outlet pipe 4 is provided at the air outlet, and the center of the main engine air inlet, the center of the air inlet pipe 3 provided at the main engine air inlet, the center of the air outlet on the connecting plate 2 and the center of the air outlet pipe 4 are all in the same straight line. A flange is provided at the air inlet end of each air inlet pipe 3, which is connected to the pipe mouth flange of the generator exhaust pipe, the pipe mouth flange of the main engine exhaust pipe and the pipe mouth flange of the boiler exhaust pipe through the flange; a flange is provided at the air outlet end of the air outlet pipe 4, and the air outlet pipe 4 is connected to the flange at the pipe mouth of the inlet pipe of the desulfurization tower through the flange; the distance from the flange end face on the air inlet end of the air inlet pipe 3 to the bottom sealing plate 1 and the distance from the flange end face on the air outlet end of the air outlet pipe 4 to the connecting plate 2 are both 120 mm, which meets the space requirement for welding and saves materials.

[0009] There are multiple generator air inlet holes, and the multiple generator air inlet holes and the boiler air inlet holes are evenly spaced and arranged on the bottom sealing plate 1. Figure 2 As shown, this is to further achieve the goal of making the exhaust gas from the generator and boiler flow smoothly into the main pipe without generating turbulence.

[0010] The outer plate is a conical structure that converges from the bottom sealing plate 1 to the connecting plate 2. Figures 1 to 3 As shown, this is to further achieve the purpose of smooth confluence and reduce occupied space.

[0011] The edge of the bottom sealing plate 1 is an irregular ridge-like structure, and also includes a plurality of lower surrounding panels 5 perpendicular to the bottom sealing plate. The bottom end of each lower surrounding panel 5 is connected as a whole with the edge of the bottom sealing plate 1 of a corresponding length, and the adjacent ends of adjacent lower surrounding panels 5 are connected as a whole. The bottom end of the outer panel is connected as a whole with the top ends of the plurality of lower surrounding panels 5. The internal space for exhaust gas discharge is formed by the connecting plate 2, the outer panel, the plurality of lower surrounding panels 5 and the bottom sealing plate 1.

[0012] The outer plate includes a plurality of panels 6, the bottom end of each panel 6 is connected to a lower edge plate 5 of a corresponding length, the adjacent ends of adjacent panels 6 are connected to each other, and the top ends of the plurality of panels 6 are connected to the connecting plate 2. The internal space for exhaust gas discharge is formed by the connecting plate 2, the plurality of panels 6, the plurality of lower edge plates 5 and the bottom sealing plate 1, so that the inlet mixing pipe forms a convergent structure as a whole, and further realizes a smooth and stable convergence.

[0013] like Figure 3As shown, a manhole 7 is provided on the peripheral plate on one side adjacent to the air inlet of the main engine, a manhole cover flange 9 is provided at the manhole 7, and a manhole cover plate 8 is provided on the manhole cover flange 9. The manhole 7 is square, and the manhole cover plate 8 and the manhole cover flange 9 thereon are also square; a sealing gasket is provided between the manhole cover plate 8 and the manhole cover flange 9 to facilitate cleaning and maintenance of the mixed flow pipe, and the manhole cover flange 9 is fixed to the manhole cover plate 8 with bolts to achieve the purpose of sealing.

[0014] A handle 10 is provided on the manhole cover 8 to facilitate opening the manhole cover 8 .

[0015] The size of the generator air inlet hole, the main engine air inlet hole and the boiler air inlet hole are 5 mm larger than the outer diameter of the air inlet pipe 3 therein, and the size of the air outlet hole is 5 mm larger than the outer diameter of the air outlet pipe 4 to facilitate welding of the bottom sealing plate 1 and the air inlet pipe 3.

[0016] The length of the air inlet pipe 3 is 150 mm, and the length of the air outlet pipe 4 is 135 mm, which is convenient for double-sided welding of the air inlet pipe 3 and the bottom sealing plate 1, meets the space requirement for welding, and can save materials.

Claims

1. An inlet mixed flow pipe of a desulfurization tower, characterized in that: The invention comprises a bottom sealing plate (1) and a connecting plate (2) located above the bottom sealing plate (1); the bottom sealing plate (1) and the connecting plate (2) are connected as a whole via an outer plate; the bottom sealing plate (1), the connecting plate (2) and the outer plate enclose an internal space for exhaust gas to be discharged; the bottom sealing plate (1) is provided with a generator air inlet, a main engine air inlet and a boiler air inlet; the connecting plate (2) is provided with an air outlet; the generator air inlet, the main engine air inlet and the boiler air inlet are all provided with an air inlet pipe (3); an air outlet pipe (4) is provided at the air outlet; the center of the main engine air inlet, the center of the air inlet pipe (3) provided at the main engine air inlet, the center of the air outlet on the connecting plate (2) and the center of the air outlet pipe (4) are all on the same straight line.

2. The inlet mixing pipe of the desulfurization tower according to claim 1, characterized in that: There are a plurality of generator air inlet holes, and the plurality of generator air inlet holes and the boiler air inlet holes are evenly spaced and arranged on the bottom sealing plate (1).

3. The inlet mixing pipe of the desulfurization tower according to claim 1, characterized in that: The peripheral plate is in a conical structure that converges from the bottom sealing plate (1) to the connecting plate (2).

4. The inlet mixing pipe of the desulfurization tower according to claim 3, characterized in that: The edge of the bottom sealing plate (1) is an irregular ridge-like structure, and further comprises a plurality of lower side panels (5) perpendicular to the bottom sealing plate, the bottom end of each lower side panel (5) being connected as a whole with an edge of a corresponding length of the edge of the bottom sealing plate (1), the adjacent ends of adjacent lower side panels (5) being connected as a whole, the bottom end of the outer panel being connected as a whole with the top ends of the plurality of lower side panels (5), and the internal space for exhaust gas to be discharged is enclosed by the connecting plate (2), the outer panel, the plurality of lower side panels (5) and the bottom sealing plate (1).

5. The inlet mixing pipe of the desulfurization tower according to claim 4, characterized in that: The outer peripheral plate comprises a plurality of panels (6), the bottom end of each panel (6) is connected to a lower edge plate (5) of a corresponding length as a whole, the adjacent ends of adjacent panels (6) are connected to a whole, and the top ends of the plurality of panels (6) are connected to a connecting plate (2) as a whole.

6. The inlet mixing pipe of the desulfurization tower according to any one of claims 1 to 5, characterized in that: A manhole (7) is arranged on the peripheral plate at one side adjacent to the air inlet of the main machine, a manhole cover flange (9) is arranged at the manhole (7), and a manhole cover plate (8) is arranged on the manhole cover flange (9).

7. The inlet mixing pipe of the desulfurization tower according to claim 6, characterized in that: A handle (10) is provided on the manhole cover plate (8).

8. The inlet mixing pipe of the desulfurization tower according to claim 1, characterized in that: The size of the generator air inlet, the main engine air inlet and the boiler air inlet are 5 mm larger than the outer diameter of the air inlet pipe (3) therein, and the size of the air outlet is 5 mm larger than the outer diameter of the air outlet pipe (4).

9. The inlet mixing pipe of the desulfurization tower according to claim 8, characterized in that: The length of the air inlet pipe (3) is 150 mm, and the length of the air outlet pipe (4) is 135 mm.

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