Ash gasification boiler material returning device

Abstract

The utility model discloses a gasification ash boiler material returning device which comprises a J-shaped pipe body, the pipe body comprises a first vertical pipe and a second vertical pipe, the lower ends of the first vertical pipe and the second vertical pipe are communicated with each other, the length of the first vertical pipe is larger than that of the second vertical pipe, the upper end of the first vertical pipe is communicated with a discharging port of a separator, and the upper end of the second vertical pipe is communicated with a combustion chamber of a hearth. The upper end of the second vertical pipe is higher than the combustion chamber. According to the utility model, the gasified ash discharged from the discharge port of the separator can build a material level in the first vertical pipe to resist higher pressure in the combustion chamber, so that the flue gas in the combustion chamber is prevented from flowing back to the separator, and the recirculated gasified ash continuously and stably returns to the combustion chamber from the separator.

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 return device. 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 re-burned 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, and then the separated gasified ash is discharged to the combustion chamber of the furnace for re-combustion in the combustion chamber of the furnace. However, the static pressure of the separator is very close to the atmospheric pressure, and the pressure in the combustion chamber is higher because the combustion chamber needs to be supplied with primary air, which causes the flue gas in the combustion chamber to flow back to the separator. Utility Model Content

[0004] In order to overcome the defects of the prior art, the utility model provides a gasification ash boiler return device, which can prevent the smoke in the combustion chamber from flowing back to the separator.

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

[0006] A gasification ash boiler return device comprises a "J"-shaped tube body, the tube body comprises a first vertical tube and a second vertical tube which are interconnected at the lower ends, the length of the first vertical tube is longer than the length of the second vertical tube, the upper end of the first vertical tube is connected to the discharge port of a separator, the upper end of the second vertical tube is connected to the combustion chamber of the furnace, and the upper end of the second vertical tube is higher than the combustion chamber.

[0007] The beneficial effects of adopting the above technical solution are: the gasified ash discharged from the separator outlet can establish a material level in the first vertical pipe to resist the higher pressure in the combustion chamber, thereby preventing the flue gas in the combustion chamber from flowing back to the separator, and allowing the recycled gasified ash to return to the combustion chamber from the separator continuously and stably.

[0008] In one embodiment, the upper end of the first vertical pipe is connected to a first flexible expansion joint for connecting to the discharge port.

[0009] The beneficial effect of adopting the above technical solution is that the first flexible expansion joint can effectively compensate for the axial deformation between the first vertical pipe and the discharge port.

[0010] In one embodiment, the upper end of the second vertical pipe is connected to a bent pipe, and the bent pipe extends downward away from one end of the second vertical pipe and is connected to the combustion chamber.

[0011] The beneficial effect of adopting the above technical solution is that the gasified ash enters the curved pipe from the upper end of the second vertical pipe and can gradually enter the combustion chamber downward.

[0012] In one embodiment, a second flexible expansion joint for connecting to the combustion chamber is connected to one end of the elbow away from the second vertical pipe.

[0013] The beneficial effect of adopting the above technical solution is that the second flexible expansion joint can effectively compensate for the axial deformation between the elbow and the combustion chamber.

[0014] In one embodiment, the elbow is connected with a feeding pipe.

[0015] The beneficial effect of adopting the above technical solution is that the feeding pipe can be used to add purified ash, dust removal ash or inert materials.

[0016] In one embodiment, a wear-resistant heat-insulating layer is provided inside the pipe body and the elbow.

[0017] The beneficial effect of adopting the above technical solution is that a wear-resistant heat-insulating layer is arranged inside the pipe body and the bent pipe to increase the service life of the pipe body and the bent pipe.

[0018] In one embodiment, a fan for blowing air into the combustion chamber is disposed on the tube body, and an output end of the fan is connected to the tube body.

[0019] The beneficial effects of adopting the above technical solution are: the fan can blow air into the combustion chamber, which on the one hand provides power for the gasified ash to flow into the combustion chamber, and on the other hand can also make it difficult for the flue gas in the combustion chamber to flow into the separator.

[0020] In one embodiment, the first vertical pipe is connected to a first pressure measuring tube for measuring pressure.

[0021] The beneficial effect of adopting the above technical solution is: a first pressure measuring tube is provided to facilitate measuring the pressure in the first vertical pipe, so as to facilitate monitoring of the material level in the first vertical pipe.

[0022] In one embodiment, the pipe body includes a horizontal pipe, two ends of which are respectively connected to the lower end of the first vertical pipe and the lower end of the second vertical pipe, and the lower part of the horizontal pipe is connected to the ash discharge pipe.

[0023] The beneficial effect of adopting the above technical solution is: an ash discharge pipe is provided to facilitate ash discharge during maintenance or emergency situations.

[0024] In one embodiment, a manhole is provided on a side of the first vertical pipe away from the second vertical pipe.

[0025] The beneficial effect of adopting the above technical solution is: a manhole is provided to facilitate workers' maintenance.

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

[0027] The gasified ash discharged from the separator outlet can establish a material level in the first vertical pipe to resist the higher pressure in the combustion chamber, thereby preventing the flue gas in the combustion chamber from flowing back to the separator and allowing the recycled gasified ash to return to the combustion chamber from the separator continuously and stably. 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] Figure 2 Shows Figure 1 Right view of;

[0032] In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale.

[0033] Reference numerals:

[0034] 1- pipe body, 101- first vertical pipe, 102- second vertical pipe, 103- horizontal pipe, 2- first flexible expansion joint, 3- discharge port, 4- second pressure measuring tube, 5- elbow, 6- feeding pipe, 7- second flexible expansion joint, 8- furnace, 9- ash discharge pipe, 10- bellows, 11- manhole, 12- first pressure measuring tube, 13- temperature measuring tube. 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 return device, such as Figure 1 and Figure 2 As shown, it includes a "J"-shaped tube body 1, and the tube body 1 includes a first vertical pipe 101 and a second vertical pipe 102 which are interconnected at the lower ends. The length of the first vertical pipe 101 is longer than the length of the second vertical pipe 102. The upper end of the first vertical pipe 101 is connected to the discharge port 3 of the separator, and the upper end of the second vertical pipe 102 is connected to the combustion chamber of the furnace 8, and the upper end of the second vertical pipe 102 is higher than the combustion chamber.

[0037] It can be understood that the gasified ash discharged from the separator outlet 3 can establish a material level in the first vertical pipe 101 to resist the higher pressure in the combustion chamber, thereby preventing the flue gas in the combustion chamber from flowing back to the separator, and allowing the recycled gasified ash to continuously and stably return to the combustion chamber from the separator, while providing a seal between the negative pressure of the separator and the positive pressure of the combustion chamber.

[0038] It should be noted that the diameter of the tube body 1 is 800 mm.

[0039] In one embodiment, the upper end of the first vertical pipe 101 is connected to a first flexible expansion joint 2 for connecting to the discharge port 3 .

[0040] It can be understood that the first flexible expansion joint 2 can effectively compensate for the axial deformation between the first vertical pipe 101 and the discharge port 3 .

[0041] In one embodiment, the upper end of the second vertical pipe 102 is connected to a bend pipe 5 , and one end of the bend pipe 5 away from the second vertical pipe 102 extends downward and is connected to the combustion chamber.

[0042] It can be understood that the gasified ash enters the curved pipe 5 from the upper end of the second vertical pipe 102 and gradually enters the combustion chamber downward.

[0043] It should be noted that the diameter of the curved pipe 5 is 800 mm.

[0044] In one embodiment, one end of the elbow 5 away from the second vertical pipe 102 is connected to a second flexible expansion joint 7 for connecting to the combustion chamber.

[0045] It can be understood that the second flexible expansion joint 7 can effectively compensate for the axial deformation between the elbow 5 and the combustion chamber.

[0046] In one embodiment, the elbow 5 is connected with a feeding pipe 6 .

[0047] It can be understood that the feeding pipe 6 can be used to add purified ash, dust removal ash or inert materials.

[0048] It should be noted that the addition of inert materials can help to strengthen the collision with the inner wall of the furnace 8 during the circulation process in the furnace 8, thereby facilitating heat conduction.

[0049] In one embodiment, wear-resistant heat-insulating layers are provided inside the pipe body 1 and the elbow 5 to increase the service life of the pipe body 1 and the elbow 5 .

[0050] In one embodiment, a fan for blowing air into the combustion chamber is disposed on the tube body 1 , and an output end of the fan is connected to the tube body 1 .

[0051] It is understandable that the fan can blow air into the combustion chamber, which can provide power for the gasified ash to flow into the combustion chamber on the one hand, and can also make it difficult for the flue gas in the combustion chamber to flow into the separator on the other hand.

[0052] It should be noted that a wind box 10 is provided at the bottom of the tube body 1 , and the fan supplies the wind in the wind box 10 into the tube body 1 .

[0053] In one embodiment, the first vertical pipe 101 is connected to a first pressure measuring tube 12 for measuring pressure.

[0054] It is understandable that the first pressure measuring tube 12 is provided to facilitate measuring the pressure in the first vertical pipe 101 so as to facilitate monitoring of the material level in the first vertical pipe 101 .

[0055] It should be noted that the bent pipe 5 is connected to a second pressure measuring tube 4 to facilitate the measurement of the pressure inside the bent pipe 5; the first vertical pipe 101 is also connected to a temperature measuring tube 13; accordingly, pressure sensors are provided on the first pressure measuring tube 12 and the second pressure measuring tube 4, and a temperature sensor is provided on the temperature measuring tube 13.

[0056] In one embodiment, the pipe body 1 includes a transverse pipe 103 , both ends of which are connected to the lower end of the first vertical pipe 101 and the lower end of the second vertical pipe 102 , respectively, and the lower part of the transverse pipe 103 is connected to the ash discharge pipe 9 .

[0057] It is understandable that the ash discharge pipe 9 is provided to facilitate ash discharge during maintenance or emergency situations.

[0058] It should be noted that, in order to facilitate the control of the ash discharge process, a valve is provided on the ash discharge pipe 9 .

[0059] In one embodiment, a manhole 11 is provided on a side of the first vertical pipe 101 away from the second vertical pipe 102 .

[0060] It is understandable that the manhole 11 is provided to facilitate workers to perform maintenance.

[0061] 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.

[0062] 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 return device, characterized in that: The invention comprises a "J"-shaped tube body (1), wherein the tube body (1) comprises a first vertical tube (101) and a second vertical tube (102) which are interconnected at the lower ends, the length of the first vertical tube (101) is longer than the length of the second vertical tube (102), the upper end of the first vertical tube (101) is connected to a discharge port (3) of a separator, the upper end of the second vertical tube (102) is connected to a combustion chamber of a furnace (8), and the upper end of the second vertical tube (102) is higher than the combustion chamber.

2. A gasification ash boiler return device according to claim 1, characterized in that: The upper end of the first vertical pipe (101) is connected to a first flexible expansion joint (2) for connecting to the discharge port (3).

3. The gasification ash boiler return device according to claim 1, characterized in that: The upper end of the second vertical pipe (102) is connected to a curved pipe (5), and the curved pipe (5) extends downward from one end of the second vertical pipe (102) and is connected to the combustion chamber.

4. A gasification ash boiler return device according to claim 3, characterized in that: One end of the curved pipe (5) away from the second vertical pipe (102) is connected to a second flexible expansion joint (7) for connecting to the combustion chamber.

5. The gasification ash boiler return device according to claim 3, characterized in that: The curved pipe (5) is connected to a feeding pipe (6).

6. The gasification ash boiler return device according to claim 3, characterized in that: The pipe body (1) and the bent pipe (5) are both provided with wear-resistant heat-insulating layers.

7. The gasification ash boiler return device according to claim 1, characterized in that: The tube body (1) is provided with a fan for blowing air into the combustion chamber, and the output end of the fan is connected to the tube body (1).

8. The gasification ash boiler return device according to claim 1, characterized in that: The first vertical pipe (101) is connected to a first pressure measuring tube (12) for measuring pressure.

9. The gasification ash boiler return device according to claim 1, characterized in that: The tube body (1) comprises a transverse tube (103), the two ends of which are respectively connected to the lower end of the first vertical tube (101) and the lower end of the second vertical tube (102), and the lower part of the transverse tube (103) is connected to an ash discharge pipe (9).

10. The gasification ash boiler return device according to claim 1, characterized in that: A manhole (11) is provided on a side of the first vertical pipe (101) away from the second vertical pipe (102).

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