Gasification ash slag boiler separator
By adopting a combined design of a cyclone separator, a steam-cooled film wall and a wear-resistant layer in the gasified ash boiler separator, the problem of vulnerability to gasified ash separator in the prior art is solved, and the durability of the gasified ash separator is achieved.
Patent Information
- Application Number
- CN202421386510.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-18
AI Technical Summary
In the prior art, gasified ash separator is easily damaged when used in high-temperature flue gas, and it is difficult to permanently separate gasified ash.
A gasified ash slag boiler separator is designed, using a cyclone separator that combines a steam-cooled membrane wall and a wear-resistant layer. The steam-cooled membrane wall absorbs the heat of the gasified ash slag and flue gas, and isolates the wear-resistant layer from wear and combustion effects.
It effectively reduces the temperature of gasified ash slag and flue gas, reduces damage to the separator, and achieves the long-lasting separation of gasified ash slag.
Smart Images
Figure CN222677484U_ABST
Abstract
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 separator. 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 gasified ash is reburned in the furnace, part of the gasified ash will be discharged with the generated flue gas. In order to reduce the waste of gasified ash, a separator is often set at the outlet of the furnace to separate the gasified ash from the flue gas. However, due to the high temperature of the flue gas and gasified ash discharged from the furnace, the gasified ash will burn in the separator, making the conventional separator very easy to be damaged. Utility Model Content
[0004] In order to overcome the defects of the prior art, the utility model provides a gasification ash boiler separator which can permanently separate the gasification ash.
[0005] The purpose of the utility model is achieved through the following technical solutions:
[0006] A gasification ash boiler separator includes a cyclone separator, which includes a cyclone barrel, an exhaust pipe, a feed port for connecting to an upper outlet of a furnace, and a discharge port for returning materials to the furnace. A first steam-cooled film wall is arranged inside the cyclone separator, and a first wear-resistant layer is arranged on the inner side of the first steam-cooled film wall.
[0007] The beneficial effects of adopting the above technical scheme are as follows: after the gasified ash enters the cyclone separator with the flue gas, the gasified ash will be separated from the flue gas due to its larger inertial centrifugal force. During this process, the first steam-cooled film wall can absorb the heat of the gasified ash and the flue gas to reduce the temperature of the gasified ash and the flue gas, thereby reducing the impact of the temperature on the cyclone separator. At the same time, the first wear-resistant layer can isolate the wear effect of the gasified ash on the first steam-cooled film wall, and can also reduce the impact of combustion on the first steam-cooled film wall, that is, this is conducive to the long-term separation of the gasified ash.
[0008] In one embodiment, a first header for inputting steam and a second header for outputting steam are respectively disposed at the lower and upper parts of the cyclone separator, and the lower and upper ends of the first steam cold film wall are respectively connected to the first header and the second header.
[0009] The beneficial effects of adopting the above technical solution are: the first header collects the steam and then supplies it to the first steam cold film wall, and the second header collects the heated steam and then discharges it to the outside; in addition, the steam is supplied from the lower end to the upper end of the first steam cold film wall to make the steam flow upward in countercurrent.
[0010] In one embodiment, the feed port is connected to an inlet flue, and a second steam-cooled film wall is arranged in the inlet flue.
[0011] The beneficial effects of adopting the above technical solution are: the flue gas carrying part of the gasified ash can enter the cyclone separator from the inlet flue, and the second steam-cooled film wall can perform preliminary cooling before the gasified ash and flue gas enter the cyclone separator.
[0012] In one embodiment, a third header and a fourth header are respectively disposed at the upper end and the lower end of the inlet flue, and the third header, the second steam-cooled film wall, the fourth header and the first header are sequentially connected.
[0013] The beneficial effects of adopting the above technical solution are: the third header collects the steam and then supplies it to the second steam cold film wall, and the fourth header collects the steam heated in the second steam cold film wall and then supplies it to the first header.
[0014] In one embodiment, the cross-sectional size of the inlet flue gradually decreases in a direction approaching the cyclone separator.
[0015] The beneficial effect of adopting the above technical solution is that such an arrangement allows the flue gas to enter the cyclone separator more smoothly, reducing the disturbance of the continuous flue gas flow caused by the sudden change of the inlet flue shape, thereby improving the efficiency of the cyclone separator.
[0016] In one embodiment, a second wear-resistant layer is provided on the inner side of the second steam-cooled film wall.
[0017] The beneficial effect of adopting the above technical solution is that the second wear-resistant layer can isolate the wear influence of gasified ash on the second steam-cooled film wall.
[0018] In one embodiment, the first header and the second header are both annular headers, the axes of the first header and the second header coincide with the axis of the first steam cold film wall, and the first header and the second header are both evenly provided with a plurality of holes for communicating with the first steam cold film wall along the circumferential direction.
[0019] The beneficial effect of adopting the above technical solution is that such an arrangement can make the steam evenly enter the first steam cold film wall from the first header, and can also make the heated steam evenly enter the second header from the first steam cold film wall.
[0020] In one embodiment, the upper portion of the first steam-cooled film wall extends inwardly.
[0021] The beneficial effect of adopting the above technical solution is that the upper part of the first steam-cooled film wall extends inwardly, so as to facilitate the formation of a sealing structure between the tube of the first steam-cooled film wall and the exhaust pipe.
[0022] In one embodiment, the upper portion of the first steam-cooled film wall extends to the exhaust pipe.
[0023] In one embodiment, the axis of the exhaust pipe does not coincide with the axis of the cyclone.
[0024] The beneficial effects of adopting the above technical solution are: the particle size of gasified ash fuel is small, and the axis of the exhaust pipe is set to be non-coincident with the axis of the cyclone, that is, an eccentric structure is adopted between the exhaust pipe and the cyclone to improve the separation efficiency of the cyclone separator.
[0025] The beneficial effects of the utility model are:
[0026] After the gasified ash enters the cyclone separator along with the flue gas, the gasified ash will be separated from the flue gas due to its larger inertial centrifugal force. During this process, the first steam-cooled film wall can absorb the heat of the gasified ash and the flue gas to reduce the temperature of the gasified ash and the flue gas, thereby reducing the impact of the temperature on the cyclone separator. At the same time, the first wear-resistant layer can isolate the wear effect of the gasified ash on the first steam-cooled film wall, and can also reduce the impact of combustion on the first steam-cooled film wall, that is, this is conducive to the long-term separation of the gasified ash. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.
[0028] in:
[0029] Figure 1 A schematic structural diagram of an embodiment of the utility model is shown;
[0030] Figure 2 Shows Figure 1 A top view of
[0031] Figure 3 Shows Figure 1 A partial enlarged view of the middle A;
[0032] In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale.
[0033] Reference numerals:
[0034] 1-cyclone separator, 101-cyclone barrel, 102-exhaust pipe, 103-discharge port, 104-feed port, 2-first steam-cooled film wall, 3-first wear-resistant layer, 4-second header, 5-first header, 6-inlet flue, 7-second steam-cooled film wall. DETAILED DESCRIPTION
[0035] The utility model will be further described below in conjunction with the accompanying drawings.
[0036] The utility model provides a gasification ash boiler separator, such as Figure 1-3 As shown, the cyclone separator 1 includes a cyclone barrel 101, an exhaust pipe 102, a feed port 104 for connecting to the furnace upper outlet and a discharge port 103 for returning materials to the furnace. A first steam-cooled film wall 2 is arranged in the cyclone separator 1, and a first wear-resistant layer 3 is arranged on the inner side of the first steam-cooled film wall 2.
[0037] It can be understood that after the gasified ash enters the cyclone separator 1 along with the flue gas, the gasified ash will be separated from the flue gas due to its larger inertial centrifugal force. During this process, the first steam-cooled film wall 2 can absorb the heat of the gasified ash and the flue gas to reduce the temperature of the gasified ash and the flue gas, thereby reducing the impact of the temperature on the cyclone separator 1. At the same time, the first wear-resistant layer 3 can isolate the wear effect of the gasified ash on the first steam-cooled film wall 2, and can also reduce the impact of combustion on the first steam-cooled film wall 2, that is, this is conducive to the long-term separation of the gasified ash.
[0038] It should be noted that the exhaust pipe 102 is a cylindrical steel plate part, which is rolled from austenitic stainless steel RA-253MA steel plate, and has the characteristics of high strength, high temperature resistance, corrosion resistance and wear resistance; the first wear-resistant layer 3 is made of wear-resistant and refractory material laid on the inner surface of the cyclone separator 1, and is fixed by high-density pins. It is not easy to fall off, and the operation is safe and reliable. The thickness of the first wear-resistant layer 3 is 25 mm.
[0039] It should also be noted that in order to ensure separation efficiency and reduce the resistance of the cyclone separator 1, the flue gas inlet velocity needs to be controlled.
[0040] In one embodiment, the lower and upper parts of the cyclone separator 1 are respectively provided with a first header 5 for inputting steam and a second header 4 for outputting steam, and the lower and upper ends of the first steam cold film wall 2 are respectively connected to the first header 5 and the second header 4.
[0041] It can be understood that the first header 5 collects the steam and then supplies it to the first steam cold film wall 2, and the second header 4 collects the heated steam and then discharges it to the outside; in addition, steam is supplied from the lower end to the upper end of the first steam cold film wall 2 to make the steam flow upward in countercurrent.
[0042] In one embodiment, the feed port 104 is connected to an inlet flue 6 , and a second steam-cooled film wall 7 is disposed in the inlet flue 6 .
[0043] It is understandable that the flue gas carrying part of the gasified ash can enter the cyclone separator 1 from the inlet flue 6 , and the second steam-cooled film wall 7 can perform preliminary cooling before the gasified ash and flue gas enter the cyclone separator 1 .
[0044] In one embodiment, a third header and a fourth header are respectively disposed at the upper end and the lower end of the inlet flue 6, and the third header, the second steam-cooled film wall 7, the fourth header and the first header 5 are sequentially connected.
[0045] It can be understood that the third header collects the steam and then supplies it to the second steam cold film wall 7 , and the fourth header collects the steam heated in the second steam cold film wall 7 and then supplies it to the first header 5 .
[0046] It should be noted that the third header can be connected to the steam outlet end of the boiler drum, so that the boiler drum supplies saturated steam to the third header.
[0047] In one embodiment, the cross-sectional size of the inlet flue 6 gradually decreases in a direction approaching the cyclone separator 1 .
[0048] It can be understood that such an arrangement allows the flue gas to enter the cyclone separator 1 more smoothly, reduces the disturbance of the continuous flue gas flow caused by the sudden change of the shape of the inlet flue 6, and thus improves the efficiency of the cyclone separator 1.
[0049] In one embodiment, a second wear-resistant layer is provided on the inner side of the second steam-cooled film wall 7 .
[0050] It can be understood that the second wear-resistant layer can isolate the second steam-cooled film wall 7 from the wear effect of gasified ash.
[0051] In one embodiment, the first collecting box 5 and the second collecting box 4 are both annular collecting boxes, the axes of the first collecting box 5 and the second collecting box 4 coincide with the axis of the first steam cold film wall 2, and the first collecting box 5 and the second collecting box 4 are both evenly provided with a plurality of holes for communicating with the first steam cold film wall 2 along the circumferential direction.
[0052] It can be understood that such an arrangement allows the steam to enter the first steam cold film wall 2 from the first header 5 evenly, and also allows the heated steam to enter the second header 4 from the first steam cold film wall 2 evenly.
[0053] In one embodiment, the upper portion of the first steam-cooled film wall 2 extends inwardly.
[0054] It can be understood that the upper portion of the first steam-cooled film wall 2 extends inwardly so as to form a sealing structure between the pipe of the cyclone separator 1 and the exhaust pipe 102 .
[0055] Specifically, the upper portion of the first steam-cooled film wall 2 extends to the exhaust pipe 102 .
[0056] In one embodiment, the axis of the exhaust pipe 102 does not coincide with the axis of the cyclone 101 .
[0057] It is understandable that the particle size of gasified ash fuel is small, and the axis of the exhaust pipe 102 is set to be non-coincident with the axis of the cyclone 101, that is, an eccentric structure is adopted between the exhaust pipe 102 and the cyclone 101 to improve the separation efficiency of the cyclone separator 1.
[0058] 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.
[0059] 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 separator, comprising a cyclone separator (1), wherein the cyclone separator (1) comprises a cyclone barrel (101), an exhaust pipe (102), a feed port (104) for communicating with an upper outlet of a furnace, and a discharge port (103) for returning material to the furnace, wherein: A first steam-cooled film wall (2) is arranged inside the cyclone separator (1), and a first wear-resistant layer (3) is arranged on the inner side of the first steam-cooled film wall (2).
2. A gasification ash boiler separator according to claim 1, characterized in that: A first header (5) for inputting steam and a second header (4) for outputting steam are respectively provided at the lower and upper parts of the cyclone separator (1), and the lower end and the upper end of the first steam-cooled film wall (2) are respectively connected to the first header (5) and the second header (4).
3. A gasification ash boiler separator according to claim 2, characterized in that: The feed port (104) is connected to an inlet flue (6), and a second steam-cooled film wall (7) is arranged in the inlet flue (6).
4. A gasification ash boiler separator according to claim 3, characterized in that: A third header and a fourth header are respectively provided at the upper end and the lower end of the inlet flue (6); the third header, the second steam-cooled film wall (7), the fourth header and the first header (5) are sequentially connected.
5. The gasification ash boiler separator according to claim 3, characterized in that: The cross-sectional dimensions of the inlet flue (6) gradually decrease in a direction approaching the cyclone separator (1).
6. The gasification ash boiler separator according to claim 3, characterized in that: The inner side of the second steam-cooled film wall (7) is provided with a second wear-resistant layer.
7. The gasification ash boiler separator according to claim 2, characterized in that: The first header (5) and the second header (4) are both annular headers, the axes of the first header (5) and the second header (4) coincide with the axis of the first steam-cooled film wall (2), and the first header (5) and the second header (4) are both uniformly provided with a plurality of holes along the circumference for communicating with the first steam-cooled film wall (2).
8. The gasification ash boiler separator according to claim 1, characterized in that: The upper portion of the first steam-cooled film wall (2) extends inwardly.
9. The gasification ash boiler separator according to claim 8, characterized in that: The upper portion of the first steam-cooled film wall (2) extends to the exhaust pipe (102).
10. The gasification ash boiler separator according to claim 1, characterized in that: The axis of the exhaust pipe (102) does not coincide with the axis of the cyclone barrel (101).