Ash gasification boiler vertical shaft

Abstract

The utility model discloses a gasification ash slag boiler vertical shaft which comprises a vertical shaft body, a water cooling enclosure wall is arranged in the vertical shaft body, the vertical shaft body is internally divided into a first flue and a second flue through a vertical partition wall, the upper end of the first flue is provided with an input port used for inputting flue gas, and the lower end of the first flue is communicated with the lower end of the second flue. An output port is formed in the upper end of the second flue, the first flue is an empty flue, and a plurality of superheaters are arranged in the second flue. In the utility model, after flowing into the first flue, flue gas can be efficiently cooled by the water-cooling enclosure wall on the side surface of the first flue, so that the flue gas acts with the heating surface of the superheater after being cooled, and the corrosion of the flue gas to the tube bundle of the superheater can be effectively prevented; meanwhile, when the smoke enters the second flue from the first flue, large turning needs to occur, so that ash mixed in the smoke falls off from the smoke due to inertia, the dust content of the smoke entering the second flue is reduced, and contamination to the superheater is reduced to a certain extent.

Description

Technical Field

[0001] The utility model belongs to the technical field of gasification ash recycling, and in particular relates to a gasification ash boiler shaft. Background Art

[0002] At present, some factories often burn coal as fuel in industrial production to provide energy for industrial production. However, in the process of coal combustion, incomplete combustion will occur more or less and gasification ash will be produced.

[0003] After the gasification ash is burned, a superheater is often used to exchange heat with the flue gas to absorb the heat contained in the flue gas. However, the flue gas is often mixed with ash, making the heating surface of the superheater very easy to be contaminated. Utility Model Content

[0004] The utility model overcomes the defects of the prior art and provides a gasification ash boiler shaft, which can reduce the contamination of the heating surface of the superheater.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] A gasification ash boiler shaft comprises a vertical shaft body, a water-cooled wall is arranged in the vertical shaft body, a first flue and a second flue are separated in the vertical shaft body by a vertical partition wall, an input port for inputting flue gas is arranged at the upper end of the first flue, the lower end of the first flue is connected to the lower end of the second flue, an output port for outputting flue gas is arranged at the upper end of the second flue, the first flue is an empty flue, and a plurality of superheaters are arranged in the second flue.

[0007] The beneficial effects of adopting the above technical solution are as follows: after the flue gas flows into the first flue, it can be efficiently cooled by the water-cooled wall on the side of the first flue, so that the flue gas can react with the heating surface of the superheater after cooling, which can effectively prevent the flue gas from corroding the superheater tube bundle; at the same time, the flue gas needs to make a large turn when entering the second flue from the first flue, so that the ash mixed in the flue gas will fall from the flue gas due to inertia, thereby reducing the dust content of the flue gas entering the second flue, and reducing the contamination of the superheater to a certain extent.

[0008] In one embodiment, an ash hopper for collecting ash is provided at the lower end of the vertical shaft.

[0009] The beneficial effect of adopting the above technical solution is: an ash hopper is arranged at the lower end of the vertical shaft body to facilitate the collection of ash.

[0010] In one embodiment, at least two ash discharge ports are provided at the lower end of the ash hopper.

[0011] The beneficial effect of adopting the above technical solution is: at least two ash discharge ports are provided, so that when one ash discharge port is blocked, the other ash discharge ports can be used to discharge ash or clear the blockage.

[0012] In one embodiment, a valve is provided at the ash discharge port.

[0013] The beneficial effect of adopting the above technical solution is that the ash discharge port can be opened or closed by opening or closing the valve, thereby facilitating the control of ash discharge.

[0014] In one embodiment, the water-cooled wall includes water-cooled walls arranged on the front side, the rear side, the left side and the right side of the vertical shaft.

[0015] The beneficial effect of adopting the above technical solution is that the water-cooled walls on the front, rear, left and right sides of the vertical well body together constitute a water-cooled wall to perform water cooling on the front, rear, left and right sides of the vertical well body.

[0016] In one embodiment, the vertical partition walls are water-cooled walls.

[0017] The beneficial effect of adopting the above technical solution is that the vertical partition wall is a water-cooled wall, so that the vertical partition wall can also participate in cooling the flue gas.

[0018] In one embodiment, the input end and the output end of any water-cooled wall are both connected to a lower header for supplying water and an upper header for discharging a steam-water mixture.

[0019] The beneficial effects of adopting the above technical solution are: the lower header can collect water and then supply it to the water-cooled wall, and the upper header can collect the steam-water mixture produced in the water-cooled wall and then discharge it to the outside.

[0020] In one embodiment, the lower header and the input end of the water-cooled wall, and the upper header and the output end of the water-cooled wall are both connected through a plurality of connecting pipes.

[0021] The beneficial effects of adopting the above technical solution are: the lower header discharges water into the water-cooled wall through several connecting pipes to facilitate the supply of water to multiple positions of the water-cooled wall; the upper header discharges the steam-water mixture through several connecting pipes to facilitate the discharge of the steam-water mixture from multiple positions of the water-cooled wall.

[0022] In one embodiment, tube bundles of several superheaters are arranged in series.

[0023] The beneficial effect of adopting the above technical solution is: the tube bundles of the superheater are arranged in series to reduce dust accumulation on the heating surface of the superheater.

[0024] In one embodiment, a soot blower is provided at the lower end of each superheater.

[0025] The beneficial effect of adopting the above technical solution is that the soot blower can blow away the ash accumulation that may be generated at the lower end of the superheater to avoid long-term ash accumulation on the heating surface at the lower end of the superheater.

[0026] The beneficial effects of the utility model are:

[0027] After the flue gas flows into the first flue, it can be efficiently cooled by the water-cooled wall on the side of the first flue, so that the flue gas can react with the heating surface of the superheater after cooling, which can effectively prevent the flue gas from corroding the superheater tube bundle; at the same time, the flue gas needs to make a big turn when entering the second flue from the first flue, so that the ash mixed in the flue gas will fall from the flue gas due to inertia, thereby reducing the dust content of the flue gas entering the second flue, and reducing the contamination of the superheater to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0029] in:

[0030] Figure 1 A schematic structural diagram of an embodiment of the utility model is shown;

[0031] In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale.

[0032] Reference numerals:

[0033] 1-first flue, 2-inlet, 3-water-cooled wall, 4-vertical partition wall, 5-ash hopper, 6-valve, 7-ash discharge port, 8-second flue, 9-superheater, 10-outlet. DETAILED DESCRIPTION

[0034] The utility model will be further described below in conjunction with the accompanying drawings.

[0035] The utility model provides a gasification ash boiler shaft, such as Figure 1 As shown, it includes a vertical well body, a water-cooled wall 3 is arranged in the vertical well body, a first flue 1 and a second flue 8 are separated in the vertical well body by a vertical partition wall 4, an input port 2 for inputting flue gas is arranged at the upper end of the first flue 1, the lower end of the first flue 1 is connected to the lower end of the second flue 8, and an output port 10 for outputting flue gas is arranged at the upper end of the second flue 8, the first flue 1 is an empty flue, and two superheaters 9 are arranged in the second flue 8.

[0036] It can be understood that after the flue gas flows into the first flue 1, it can be efficiently cooled by the water-cooled wall 3 on the side of the first flue 1, so that the flue gas can react with the heating surface of the superheater 9 after cooling, which can effectively prevent the flue gas from corroding the tube bundle of the superheater 9; at the same time, the flue gas needs to make a 180° turn when entering the second flue 8 from the first flue 1, so that the ash mixed in the flue gas will fall from the flue gas due to inertia, thereby reducing the dust content of the flue gas entering the second flue 8, and reducing the contamination of the superheater 9 to a certain extent.

[0037] It should be noted that the heat exchange medium in the superheater 9 is steam, and the steam is introduced from the upper end of the superheater 9 and discharged from the lower end of the superheater 9 to facilitate countercurrent heat exchange.

[0038] In one embodiment, an ash hopper 5 for collecting ash is provided at the lower end of the vertical shaft.

[0039] It can be understood that an ash hopper 5 is provided at the lower end of the vertical shaft body to facilitate the collection of ash.

[0040] In one embodiment, two ash discharge ports 7 are provided at the lower end of the ash hopper 5 so that when one ash discharge port 7 is blocked, the other ash discharge ports 7 can be used to discharge ash or clear the blockage.

[0041] In one embodiment, a valve 6 is provided at the ash discharge port 7 .

[0042] It can be understood that by opening or closing the valve 6, the ash discharge port 7 can be opened or closed, thereby facilitating the control of ash discharge.

[0043] It should be noted that the valve 6 can be a manual valve or an electric valve.

[0044] In one embodiment, the water-cooled enclosure wall 3 includes water-cooled walls arranged on the front side, the rear side, the left side and the right side of the vertical shaft body.

[0045] It can be understood that the water-cooled walls on the front, rear, left and right sides of the vertical shaft together constitute a water-cooled enclosure wall 3 to perform water cooling on the front, rear, left and right sides of the vertical shaft.

[0046] In one embodiment, the vertical partition wall 4 is a water-cooled wall, so that the vertical partition wall 4 can also participate in cooling the flue gas.

[0047] In one embodiment, the input end and the output end of any water-cooled wall are both connected to a lower header for supplying water and an upper header for discharging a steam-water mixture.

[0048] It can be understood that the lower header can collect water and then supply it to the water-cooled wall, and the upper header can collect the steam-water mixture produced in the water-cooled wall and then discharge it to the outside.

[0049] In one embodiment, the lower header and the input end of the water-cooled wall, and the upper header and the output end of the water-cooled wall are both connected through a plurality of connecting pipes.

[0050] It can be understood that the lower header discharges water into the water-cooled wall through several connecting pipes to facilitate the supply of water to multiple locations of the water-cooled wall; the upper header discharges the steam-water mixture through several connecting pipes to facilitate the discharge of the steam-water mixture from multiple locations of the water-cooled wall.

[0051] In one embodiment, the tube bundles of several superheaters 9 are arranged in series.

[0052] It can be understood that the tube bundles of the superheater 9 are arranged in series to reduce dust accumulation on the heating surface of the superheater 9.

[0053] In one embodiment, a soot blower is provided at the lower end of the superheater 9 .

[0054] It is understandable that the soot blower can blow away the accumulated ash that may be generated at the lower end of the superheater 9 to avoid long-term accumulation of ash on the heating surface at the lower end of the superheater 9.

[0055] It should be noted that the ash swept down may fall downward to the ash hopper 5 due to the effect of gravity and be discharged from the ash discharge port 7 .

[0056] It should also be noted that the soot blower can be arranged horizontally, with its output end facing the lower end of the superheater 9.

[0057] In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0058] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments, and other arrangements may be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the features described in the various dependent claims and herein may be combined in a manner different from that described in the original claims. It may also be understood that the features described in conjunction with the individual embodiments may be used in other described embodiments.

Claims

1. A gasification ash boiler shaft, characterized in that: The invention comprises a vertical well body, wherein a water-cooled wall (3) is arranged in the vertical well body, wherein a first flue (1) and a second flue (8) are separated in the vertical well body by a vertical partition wall (4), wherein an input port (2) for inputting flue gas is arranged at the upper end of the first flue (1), the lower end of the first flue (1) is connected to the lower end of the second flue (8), and an output port (10) for outputting flue gas is arranged at the upper end of the second flue (8), the first flue (1) is an empty flue, and a plurality of superheaters (9) are arranged in the second flue (8).

2. A gasification ash boiler shaft according to claim 1, characterized in that: An ash hopper (5) for collecting ash is provided at the lower end of the vertical well body.

3. A gasification ash boiler shaft according to claim 2, characterized in that: The lower end of the ash hopper (5) is provided with at least two ash discharge ports (7).

4. A gasification ash boiler shaft according to claim 3, characterized in that: A valve (6) is provided at the ash discharge port (7).

5. The gasification ash boiler shaft according to claim 1, characterized in that: The water-cooling wall (3) comprises water-cooling walls arranged on the front side, the rear side, the left side and the right side of the vertical well body.

6. A gasification ash boiler shaft according to claim 5, characterized in that: The vertical partition wall (4) is a water-cooled wall.

7. A gasification ash boiler shaft according to claim 6, characterized in that: The input end and the output end of any water-cooled wall are both connected to a lower header for supplying water and an upper header for discharging a steam-water mixture.

8. A gasification ash boiler shaft according to claim 7, characterized in that: The lower header and the input end of the water-cooled wall, and the upper header and the output end of the water-cooled wall are both connected through a plurality of connecting pipes.

9. The vertical shaft of a gasification ash boiler according to claim 1, characterized in that: The tube bundles of the plurality of superheaters (9) are arranged in series.

10. A gasification ash boiler shaft according to claim 9, characterized in that: A soot blower is provided at the lower end of each superheater (9).

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