Anti-slag-blocking structure of semi-waste boiler gasification furnace

Abstract

The utility model belongs to the technical field of gasification furnaces, and relates to an anti-slag-blocking structure of a semi-waste boiler gasification furnace, which comprises a waste boiler section slag discharge port, a waste boiler section water cooler and a chilling section cooling pipe which are sequentially communicated from top to bottom, the waste boiler section slag tapping opening is of a tubular structure with an inverted conical longitudinal section, and the ratio of the conical wall length of the waste boiler section slag tapping opening to the inner diameter of the water cooler in the waste boiler section to the inner diameter of the semi-waste boiler gasification furnace body is 0.345: (0.4064-0.4088): 1. According to the utility model, the slag discharge port of the waste boiler section and the water cooler of the waste boiler section are transformed, so that the inner diameter of the water cooler of the waste boiler section is kept in a larger range, slag blockage can be effectively reduced, and stable operation of equipment and production is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to gasification furnace technical field relates to a kind of half waste pot gasification furnace anti-sludge structure. BACKGROUND

[0002] Gasification furnace is one of the commonly used equipment in coal chemical industry, especially the multi-nozzle opposed waste pot-quenching process gasification furnace, referred to as half waste pot gasification furnace, the half waste pot gasification furnace body contains combustion chamber section, waste pot section and quenching chamber section from top to bottom in turn, half waste pot gasification furnace can generally by-product 9.0MPa high-pressure steam, recovery high-temperature water gas sensible heat;But the gasification furnace often appears the following problems in the process of running:

[0003] When the ash and slag falling from the waste pot section slag outlet enters the quenching chamber section, it needs to pass through the lower water cooler, but because high-temperature ash and slag has greater adhesion, it will adhere to the surface of the lower water cooler, with the continuous accumulation of ash and slag, the ash and slag at the inner wall of the lower water cooler becomes thicker and thicker, making the ash and slag passage between the ash and slag and the quenching chamber section narrow, resulting in the waste pot section slag outlet often being blocked. Once blocked, water gas and ash and slag cannot pass through the lower water cooler, and ash and slag is completely accumulated in the waste pot section, affecting the normal and stable operation of the equipment.

[0004] In addition, when the waste pot section slag outlet is blocked, the half waste pot gasification furnace is forced to stop, and the slag removal personnel enter the waste pot section furnace through the uppermost manhole of the half waste pot gasification furnace body to clean the ash and slag accumulated in the waste pot section, which not only increases the maintenance cost and the safety maintenance risk of personnel, but also is not conducive to the stable operation of production. UTILITY MODEL CONTENTS

[0005] In view of the technical problem that the waste pot section slag outlet of the existing half waste pot gasification furnace is often blocked, affecting the normal and stable operation of the equipment and production, the utility model provides a half waste pot gasification furnace anti-sludge structure.

[0006] The utility model reforms the waste pot section slag outlet and the waste pot section water cooler, so that the inner diameter of the waste pot section water cooler is kept within a larger range, which can effectively reduce the slag blocking and ensure the stable operation of the equipment and production.

[0007] In order to achieve the above purpose, the utility model adopts the technical scheme of:

[0008] A half waste pot gasification furnace anti-sludge structure, comprising a waste pot section slag outlet, a waste pot section water cooler and a quenching section cooling pipe which are sequentially connected from top to bottom;The waste pot section slag outlet is a tubular structure with an inverted conical longitudinal section, and the ratio of the length of the conical wall of the waste pot section slag outlet, the inner diameter of the waste pot section water cooler and the inner diameter of the half waste pot gasification furnace body is 0.345:(0.4064-0.4088):1.

[0009] Further limited, the half waste pot gasification furnace anti-blocking slag structure further comprises a flange connector, the waste pot section lower water cooler is communicated with the quenching section cooling pipe through the flange connector, and the flange connector is located in the half waste pot gasification furnace body.

[0010] Further limited, the half waste pot gasification furnace anti-blocking slag structure further comprises a flange connector, the waste pot section lower water cooler is communicated with the quenching section cooling pipe through the flange connector, and the flange connector is located in the half waste pot gasification furnace body.

[0011] Further limited, the inclination angle of the support plate is 10°-20°.

[0012] Further limited, the flange connector comprises an inner ring and a tray flange, which are sequentially sleeved from inside to outside; the inner ring is sleeved on the outside of the waste pot section lower water cooler and the quenching section cooling pipe connection; and one end of the support plate is connected with the tray flange.

[0013] Further limited, the flange connector further comprises an upper connecting ring plate arranged on the upper portion of the tray flange and sleeved on the outer wall of the waste pot section lower water cooler, and a quenching ring arranged on the lower portion of the tray flange and connected with the quenching section cooling pipe.

[0014] Further limited, the flange connector further comprises a fastener, and the fastener sequentially penetrates the quenching ring, the tray flange and the upper connecting ring plate and is fastened.

[0015] Further limited, the fastener is a plurality of fasteners, and the plurality of fasteners are uniformly distributed in the radial direction of the tray flange.

[0016] Further limited, the waste pot section lower water cooler, the quenching section cooling pipe and the gasification furnace body are coaxially arranged.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1、 the utility model discloses a waste pot section lower slag port and waste pot section lower water cooler are reformed, and the ratio of the length of the taper wall of the waste pot section lower slag port, the inner diameter of the waste pot section lower water cooler and the inner diameter of the half waste pot gasification furnace body is 0.345 :(0.4064-0.4088): 1.

[0019] 2. In the utility model, support plates are arranged between the flange connecting piece and the inner wall of the semi-waste pot gasification furnace body, the connecting places of the waste pot section down water cooler and the quenching section cooling pipe are supported through the support plates and the flange connecting piece, and the stability of the connection is guaranteed. Preferably, the inclination angle of the support plate is 10-20°, at which the support plate can provide the maximum supporting effect.

[0020] 3. The utility model discloses a flange connecting piece to communicate the waste pot section down water cooler and the quenching section cooling pipe, ensures the compactness of the connection, and facilitates the overhaul and replacement; further fixed through the fastener, guarantees the stability of the structure connection.

[0021] 4. The utility model discloses a flange connecting piece includes the inner ring piece and tray flange of outer sleeve connection in turn by inside, and the inner ring piece is sleeved in the outside of waste pot section down water cooler and the outside of quenching section cooling pipe;Support plate one end is connected with tray flange;The flange connecting piece still includes the upper connecting ring plate of being placed on the upper portion of tray flange and being sleeved on the outer wall of waste pot section down water cooler and the quenching ring of being placed in the lower portion of tray flange and being connected on quenching section cooling pipe, not only simple structure, convenient installation, has strong connection stability and compactness, makes the gasification furnace operation safety. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the waste pot section and quenching chamber section connection schematic diagram of the utility model semi-waste pot gasification furnace;

[0023] Figure 2 It is the quenching section structure diagram;

[0024] Figure 3 It is Figure 2 The enlarged view of A in the middle;

[0025] Among them:

[0026] 1-semi-waste pot gasification furnace body;100-waste pot section water cooled wall;101-waste pot section down slag port;2-waste pot section down water cooler;3-quenching section cooling pipe;4-support plate;5-inlet pipe;6-inner ring piece;7-fastener;8-upper connecting ring plate;9-tray flange;10-toothed combination pad;11-ceramic fiber layer;12-quenching ring. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following is further detailed in combination with the drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0028] Embodiment 1

[0029] Referring to Figure 1 and Figure 2 , the half-waste pot gasifier anti-clogging structure provided by the embodiment comprises, from top to bottom, a waste pot section lower slag outlet 101, a waste pot section lower water cooler 2 and a quenching section cooling pipe 3; the waste pot section lower slag outlet 101 is a tubular structure with an inverted conical longitudinal section, and the ratio of the length of the conical wall of the waste pot section lower slag outlet 101, the inner diameter of the waste pot section lower water cooler 2 and the inner diameter of the half-waste pot gasifier body 1 is 0.345:(0.4064-0.4088):1.

[0030] In the embodiment, the half-waste pot gasifier body 1 is a cylindrical structure, and its interior is sequentially divided into a combustion section, a waste pot section and a quenching section from top to bottom, wherein the waste pot section comprises a waste pot section water-cooled wall 100 and a waste pot section lower slag outlet 101, and the waste pot section lower slag outlet 101 is located below the waste pot section water-cooled wall 100 and communicates with the waste pot section water-cooled wall 100 to form an upper column and lower cone structure. The half-waste pot gasifier body 1, the waste pot section lower water cooler 2 and the quenching section cooling pipe 3 are coaxially arranged.

[0031] In the embodiment, the inner diameter of the half-waste pot gasifier body 1 is 4200 mm, the length of the conical wall of the waste pot section lower slag outlet 101 is 1449 mm, and the inner diameter of the waste pot section lower water cooler 2 is between 1711 mm and 1717 mm.

[0032] In implementation, the inner diameter of the waste pot section lower water cooler 2 is 1711 mm, 1713 mm, 1715 mm or 1717 mm.

[0033] Preferably, the inner diameter of the half-waste pot gasifier body 1 is 4200 mm, the inner diameter of the waste pot section water-cooled wall 100 is 3163 mm, and the inner diameter of the quenching section cooling pipe 3 is 1800 mm; the conical surface of the waste pot section lower slag outlet 101 is inclined toward the central axis of the half-waste pot gasifier body 1, the included angle between the conical surface of the waste pot section lower slag outlet 101 and the axis of the half-waste pot gasifier body 1 is 30°, and the length of the conical wall of the waste pot section lower slag outlet 101 is 1449 mm; the inner diameter of the lower end of the waste pot section lower water cooler 2 is 1717 mm, and at this time, the inner diameter of the lowermost end of the waste pot section lower slag outlet 101 and the inner diameter of the waste pot section lower water cooler 2 are the largest relative to the inner diameter of the half-waste pot gasifier body 1 and the inner diameter of the waste pot section water-cooled wall 100; the inclined surface of the conical shape of the waste pot section lower slag outlet 101 facilitates the falling of the ash and slag into the quenching section cooling pipe 3 of the quenching section through the waste pot section lower water cooler 2, and at the same time, due to the short length of the conical wall of the waste pot section lower slag outlet 101, the ash and slag passage between the waste pot section water-cooled wall 100 and the waste pot section lower water cooler 2 has a large diameter, and the same cross section of the ash and slag passage can accommodate more ash and slag, effectively reducing the accumulation of ash and slag and preventing clogging.

[0034] In the embodiment, the slag blocking prevention structure of the semi-waste pot gasifier further comprises a flange connecting piece located inside the semi-waste pot gasifier body 1. The waste pot section lower water cooler 2 is communicated with the quenching section cooling pipe 3 through the flange connecting piece, so as to ensure the stability and sealing property of the connection.

[0035] In the embodiment, the slag blocking prevention structure of the semi-waste pot gasifier further comprises a support plate 4 arranged between the flange connecting piece and the inner wall of the semi-waste pot gasifier body 1. One end of the support plate 4 is connected with the flange connecting piece, and the other end of the support plate 4 is inclined from the bottom to the top and connected with the inner wall of the semi-waste pot gasifier body 1. The waste pot section lower water cooler 2 and the quenching section cooling pipe 3 are supported by the support plate, so as to ensure the stability of the waste pot section lower water cooler 2 and the quenching section cooling pipe 3.

[0036] In the embodiment, the inclination angle of the support plate 4 is 10°-20°. Specifically, the inclination angle is 10°, 12°, 15°, 18° or 20°.

[0037] Preferably, the inclination angle of the support plate 4 is 15°, so that the support effect is larger and more stable.

[0038] Embodiment 2

[0039] Referring to Figure 2 and Figure 3 On the basis of the embodiment 1, the slag blocking prevention structure of the semi-waste pot gasifier provided in the embodiment comprises a flange connecting piece comprising an inner ring piece 6 and a tray flange 9 which are sequentially sleeved from inside to outside.

[0040] In the embodiment, the flange connecting piece further comprises an upper connecting ring plate 8 arranged on the upper part of the tray flange 9 and sleeved on the outer wall of the waste pot section lower water cooler 2, and a quenching ring 12 arranged on the lower part of the tray flange 9 and connected with the quenching section cooling pipe 3.

[0041] In the embodiment, the outer end of the inner ring piece 6 is a first step structure with the upper part larger than the lower part, and the end of the tray flange 9 connected with the inner ring piece 6 is a second step structure with the upper part smaller than the lower part. The first step structure and the second step structure are matched, and the inner ring piece 6 is sleeved on the tray flange 9 to form an integral whole.

[0042] In the embodiment, the flange connecting piece further comprises a fastener 7. The fastener 7 sequentially penetrates the quenching ring 12, the tray flange 9 and the upper connecting ring plate 8 and is fastened.

[0043] Preferably, the fastener 7 is a bolt connecting piece, and can also be replaced by other fasteners, such as a screw.

[0044] In the embodiment, the inner ring piece 6 and the tray flange 9 are both ring pieces, and the fastener 7 is a plurality of fasteners. The plurality of fasteners 7 are evenly distributed in the radial direction of the tray flange 9.

[0045] In practice, the fasteners 7 are two, three, four or more.

[0046] In this embodiment, a sealing element is arranged at the upper surface of the flange connector and at the lower surface of the flange connector.

[0047] Preferably, the sealing element comprises a tooth-shaped combined gasket 10 and a ceramic fiber layer 11; the tooth-shaped combined gasket 10 is arranged at the upper surface of the tray flange 9 and at the lower surface of the tray flange 9 respectively, so that the upper connecting ring plate 8, the tooth-shaped combined gasket 10, the tray flange 9, the tooth-shaped combined gasket 10 and the quench ring 12 are stacked from top to bottom in turn, and then pass through the above components from bottom to top in turn and are fastened as a whole; by arranging a layer of tooth-shaped combined gasket 10 between the upper connecting ring plate 8 and the tray flange 9 and between the tray flange 9 and the quench ring 12, the tightness is improved, and water gas is prevented from leaking to the interlayer.

[0048] Preferably, the ceramic fiber layer 11 is arranged at the upper surface of the inner ring 6 and at the lower surface of the inner ring 6 respectively, that is, a layer of ceramic fiber layer 11 is arranged between the upper connecting ring plate 8 and the inner ring 6 and between the inner ring 6 and the quench ring 12, and the ceramic fiber layer 11 has the advantages of high temperature resistance, good thermal stability, low thermal conductivity and resistance to mechanical vibration. When the tray flange 9 and the inner ring 6 are clamped, the tooth-shaped combined gasket 10 and the ceramic fiber layer 11 are in contact.

[0049] Preferably, the thickness of the tooth-shaped combined gasket 10 is 6mm, and the thickness of the ceramic fiber layer 11 is 6mm; the height of the upper connecting ring plate 8 and the height of the quench ring 12 are both 30mm.

[0050] Referring to Figure 2 and Figure 3 In this embodiment, the half-waste pot gasification furnace anti-sludge blocking structure further comprises a water inlet pipe 5 located between the quenching section cooling pipe 3 and the half-waste pot gasification furnace body 1; one end of the water inlet pipe 5 extends to the outside of the half-waste pot gasification furnace body 1, and the other end of the water inlet pipe 5 communicates with the inside of the quenching section cooling pipe 3.

[0051] In this embodiment, the water inlet pipe 5 is four, and is symmetrically distributed in pairs about the axial direction of the quenching section cooling pipe 3.

[0052] Preferably, the water inlet pipe 5 is connected by a first water inlet pipe and a second water inlet pipe, the first water inlet pipe is placed vertically, and the angle between the axial direction of the second water inlet pipe and the axial direction of the first water inlet pipe is 145°. When connected, the first water inlet pipe and the second water inlet pipe are both located between the quenching section cooling pipe 3 and the semi-dump gasifier body 1, and the axial direction of the first water inlet pipe is the same as the axial direction of the quenching section cooling pipe 3, the second water inlet pipe is close to the quenching section cooling pipe 3, the lower end of the first water inlet pipe extends to the outside of the semi-dump gasifier body 1 and is in communication with cooling water, the upper end of the first water inlet pipe is in communication with the inside of the quenching section cooling pipe 3 through the second water inlet pipe, and the cooling water is passed into the quenching section cooling pipe 3 to wash the falling ash.

[0053] Obviously, the above embodiments are only examples for clearly illustrating, but not limitation to the embodiments. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A semi-dump gasifier anti-clogging structure, characterized in that, The structure comprises, from top to bottom, a waste pot section lower slag outlet (101), a waste pot section lower water cooler (2), and a quenching section cooling pipe (3); the waste pot section lower slag outlet (101) is a tubular structure with an inverted conical longitudinal section, and the ratio of the length of the conical wall of the waste pot section lower slag outlet (101), the inner diameter of the waste pot section lower water cooler (2), and the inner diameter of the semi-waste pot gasifier body (1) is 0.345:(0.4064-0.4088):

1.

2. The half-drum gasifier anti-clogging structure according to claim 1, characterized in that, The anti-sludge blocking structure of the semi-waste pot gasifier further comprises a flange connector, the waste pot section lower water cooler (2) is connected with the quenching section cooling pipe (3) through the flange connector; and the flange connector is located inside the semi-waste pot gasifier body (1).

3. The half-cock gasifier anti-sludge blocking structure according to claim 2, characterized in that, The anti-sludge blocking structure of the semi-waste pot gasifier further comprises a support plate (4) arranged between the flange connector and the inner wall of the semi-waste pot gasifier body (1); one end of the support plate (4) is connected with the flange connector, and the other end of the support plate (4) is inclined from bottom to top and connected with the inner wall of the semi-waste pot gasifier body (1).

4. The half-cock gasifier anti-sludge blocking structure according to claim 3, characterized in that, The inclination angle of the support plate (4) is 10-20°.

5. The half-cock gasifier anti-sludging structure according to claim 3, wherein The flange connector comprises an inner ring (6) and a tray flange (9) which are sequentially sleeved from inside to outside; the inner ring (6) is sleeved on the outside of the connection between the waste pot section lower water cooler (2) and the quenching section cooling pipe (3); and one end of the support plate (4) is connected with the tray flange (9).

6. The half-cock gasifier anti-sludging structure according to claim 5, wherein The flange connector further comprises an upper connecting ring plate (8) arranged on the upper part of the tray flange (9) and sleeved on the outer wall of the waste pot section lower water cooler (2), and a quenching ring (12) arranged on the lower part of the tray flange (9) and connected with the outer wall of the quenching section cooling pipe (3).

7. The half-cock gasifier anti-sludging structure according to claim 6, characterized in that, The flange connector further comprises a fastener (7); the fastener (7) sequentially passes through the quenching ring (12), the tray flange (9), and the upper connecting ring plate (8) and is fastened.

8. The half-cock gasifier anti-sludging structure according to claim 7, characterized in that, There are multiple fasteners (7), and the multiple fasteners (7) are uniformly distributed in the radial direction of the tray flange (9).

9. The anti-sludging structure of a semi-dry gasifier according to any one of claims 1 to 8, wherein The waste pot section lower water cooler (2), the quenching section cooling pipe (3), and the semi-waste pot gasifier body (1) are coaxially arranged.

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