Garbage gasification gas-fired boiler with incineration flue gas particulate matter purging device

Abstract

The utility model provides a garbage gasification gas-fired boiler with an incineration flue gas particulate matter purging device, and relates to the technical field of garbage gasification gas-fired boilers, the garbage gasification gas-fired boiler comprises a barrel body, a burner, a smoke pipe, a purging device and a gas inlet device, the burner is installed on the barrel body, the smoke pipe is arranged at a heat exchange area in the barrel body, the purging device comprises a purging pipeline, and the gas inlet device is connected with the purging pipeline. The gas inlet device is connected with the purging pipeline, the two groups of purging devices are respectively an upper purging device and a lower purging device, and the upper purging device and the lower purging device are respectively arranged on the upper side and the lower side of the smoke pipe. By designing two sets of blowing devices, accumulated particles on the inner wall and the upper and lower sides of the smoke pipe are blown away, the particles are prevented from blocking the pipeline, the running resistance of the system is reduced, and the service life of the system is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to garbage gasification fuel gas boiler technical field especially has the garbage gasification fuel gas boiler of incineration flue gas particulate matter blowing device. BACKGROUND

[0002] For county and other small garbage gasification disposal system, generally configure small fuel gas boiler to realize energy utilization and compact arrangement. SUMMARY

[0003] The utility model discloses a garbage gasification fuel gas boiler with incineration flue gas particulate matter blowing device, two groups of blowing devices are designed, realize the particulate matter blowing of two kinds of working conditions before and after the combustion flue gas heat exchange, solve the problem of the system service life and the increase of the operation resistance of the system due to the blockage of the pipe by the particulate matter.

[0004] To solve the above problems, the utility model provides a garbage gasification fuel gas boiler with incineration flue gas particulate matter blowing device, including cylinder, combustor, flue pipe, blowing device and inlet device, the combustor is installed on the cylinder, the flue pipe is arranged at the heat exchange area in the cylinder, the blowing device includes blowing pipeline, the inlet device is connected with blowing pipeline, the blowing device sets two groups, and is upper blowing device and lower blowing device respectively, the upper blowing device and lower blowing device are arranged on the upper and lower sides of flue pipe respectively, are used for carrying out reverse blowing and forward blowing to the upper and lower ends of flue pipe respectively, realize the particulate matter blowing of two kinds of working conditions (300~400 DEG C, greater than 850 DEG C) before and after the combustion flue gas heat exchange.

[0005] According to an embodiment of the utility model, the blowing pipeline includes a plurality of main pipes and a plurality of branch pipes, each flue pipe corresponds to a group of pipelines, improving the blowing effect.

[0006] According to an embodiment of the utility model, the particulate matter blowing working condition and operating temperature before and after the combustion flue gas heat exchange are not easy, especially above 850 DEG C high temperature injection before heat exchange, the present scheme is provided with refractory material outside at least part of the blowing pipeline, and the refractory material is arranged in the form of pouring or assembly.

[0007] Further, the cylinder is provided with a water cooling area, and the valve body assembly of the lower blowing device is arranged in the water cooling area, thereby further ensuring stable blowing effect at a high temperature of 850 DEG C or above before heat exchange.

[0008] According to an embodiment of the present application, the blowing device further comprises a valve body assembly, and cooperates with a time sequence controller; the blowing pipeline is connected with the valve body assembly, and is used for realizing sequential blowing of the blowing pipeline, and can be designed in groups and zones, thereby realizing controllable time sequence blowing, forward blowing and reverse blowing.

[0009] According to an embodiment of the present application, a throat is arranged in the cylinder, and the lower blowing device is arranged at a position between the throat and the smoke pipe; the throat is used for controlling the flow rate of flue gas after combustion, preventing particles after blowing of the lower blowing device from entering the burner area, and further affecting normal work of the fire detector.

[0010] According to an embodiment of the present application, the heat exchange area in the cylinder is enclosed by the upper tube plate and the lower tube plate; the lower tube plate is arc-shaped on the side facing the lower blowing device, so as to better complete blowing of the lower part.

[0011] According to an embodiment of the present application, a blowing acceleration port is arranged at the branch pipe of the upper blowing device, and is used for further accelerating the blowing gas, so as to better complete the soot blowing function.

[0012] According to an embodiment of the present application, a high-temperature-resistant sealing gasket is arranged on one side of the blowing acceleration port, and a pressing plate is arranged on the other side; the high-temperature-resistant sealing gasket is located between the blowing acceleration port and the upper tube plate.

[0013] According to an embodiment of the present application, the air inlet device comprises an air compressor or a nitrogen making machine, and is used for supplying compressed air or compressed nitrogen.

[0014] The present application has the following beneficial effects: two sets of blowing devices are designed, compressed air or compressed nitrogen is used as blowing medium, and particle blowing is realized under two working conditions of 300-400 DEG C and greater than 850 DEG C before and after heat exchange of combustion flue gas, so that particles accumulated on the inner wall of the smoke pipe and on the upper and lower sides are blown away, particle blockage of the pipeline is avoided, the running resistance of the system is reduced, normal flue gas discharge and system service life are ensured; in addition, the design in groups and zones is provided, and controllable time sequence blowing, forward blowing and reverse blowing can be realized; through corresponding structure design, the blowing working atmosphere is optimized, and the blown particles can be effectively introduced into subsequent processes from bottom to top, so that the blown particles do not enter the combustion area to affect combustion stability and work stability of the fire detector. BRIEF DESCRIPTION OF DRAWINGS

[0015] The present application will be further described below in combination with the drawings and embodiments.

[0016] Figure 1 Figure 1 is a schematic diagram of the overall structure of a waste gasification gas boiler with incineration flue gas particle blowing device;

[0017] Figure 2 Figure 2 is a schematic diagram of the pipeline arrangement of the lower blowing device;

[0018] Figure 3 Figure 3 is a schematic diagram of the pipeline arrangement of the upper blowing device;

[0019] Figure 4 Figure 4 is a schematic diagram of the lower blowing device; Figure 1 Figure 5 is an enlarged structural schematic diagram of position A in Figure 4;

[0020] Figure 5 Figure 6 is a schematic diagram of the upper blowing device; Figure 1 Figure 7 is a plan view of the lower end position of the smoke pipe in Figure 6;

[0021] Figure 6 Figure 8 is a plan view of the upper end position of the smoke pipe in Figure 6; Figure 1 Figure 9 is a schematic diagram of the upper part of the cylinder;

[0022] Figure 7 Figure 10 is a schematic diagram of the lower part of the cylinder;

[0023] Figure 8 Figure 11 is a schematic diagram of the lower part of the cylinder;

[0024] Figure 1 is a schematic diagram of the overall structure of a waste gasification gas boiler with incineration flue gas particle blowing device; 1. Lifting lug; 2. Leg; 3. Cylinder; 4. Smoke pipe; 5. Upper tube plate; 6. Lower tube plate; 7. Upper blowing device; 8. Burner; 9. Refractory material; 10. Membrane wall; 11. Water-cooled wall; 12. Lower blowing device; 13. Throat; 14. Manhole device; 15. Deflector; 16. Downcomer; 17. Header; 20. Regulating valve one; 21. Regulating valve two; 22. Regulating valve three; 23. Time sequence controller; 24. Branch pipe; 25. Valve group; 26. Ring pipe; 27. Branch pipe; 28. Blowing pipe; 29. Time sequence controller; 30. Branch pipe; 31. Butt flange group; 32. Intake main pipe; 33. Blowing branch pipe; 34. Blowing pipe; 35. Pressing plate; 36. High-temperature-resistant sealing gasket; 37. Blowing acceleration port. DETAILED DESCRIPTION

[0025] The following description is only for disclosing the present application so that those skilled in the art can implement the present application. The examples in the following description are only for example, and those skilled in the art can think of other obvious modifications. The basic principles of the present application defined in the following description can be applied to other embodiments, modifications, improvements, equivalents and other solutions without departing from the spirit and scope of the present application.

[0026] The waste gasification gas boiler with incineration flue gas particle blowing device, as shown in Figure 1The high-temperature combustible gas generated after the garbage is gasified can enter a small garbage gasification fuel gas boiler after being preliminarily purified, the lug 1 is installed on the corresponding steel frame through a lifting cable, the supporting leg 2 is installed on the corresponding steel frame through a spring installation support, and the whole fuel gas boiler can be fixed through the support of the lug 1 and the supporting leg 2.

[0027] The upper section of the cylinder body 3 contains a plurality of smoke pipes 4, the smoke pipes 4 are internally threaded smoke pipes, the internally threaded smoke pipes mainly pass high-temperature flue gas after the combustion of the combustible garbage gas inside, and the outside and the cylinder body 3 form a water jacket to form a heat exchange area for heat exchange, and the water jacket is closed and completed by the cylinder body 3, the internally threaded smoke pipes, the upper tube plate 5 and the lower tube plate 6.

[0028] The upper part of the cylinder body 3 is provided with an upper blowing device 7, and the lower part of the fuel gas boiler is a hearth, which is mainly a combustion area of the fuel gas. The combustible gas from the gasification furnace is combusted through the burner 8, the hearth is provided with the refractory material 9 to maintain the combustion temperature in the hearth, and the combustion temperature is not less than 850 DEG C under normal working conditions.

[0029] The lower part of the fuel gas boiler is provided with a membrane wall 10 for heat exchange, the upper part of the membrane wall 10 is provided with a water-cooled wall 11 for heat exchange, the water-cooled wall 11 area is provided with a lower blowing device 12, in order to better complete the function of the lower blowing device 12, the fuel gas boiler is also provided with a manhole device 14 for maintenance, the inside of the cylinder body 3 is provided with a flow guide plate 15 for connecting the header 17 and the cylinder body 3, the hot water at the bottom of the cylinder body 3 can enter the header 17 through the membrane wall 10 and the downcomer 16, and periodic blowdown is carried out, and the water jacket in the cylinder body 3 generates high-temperature steam after heat exchange and is discharged.

[0030] The lower blowing device 12 completes the lower blowing of the internally threaded smoke pipes, a large amount of white particulate matter is generated after the combustion of the household garbage gasification combustible gas, the main component is silicon dioxide, and the white particulate matter has certain adhesion, when the flue gas after combustion enters the internally threaded smoke pipes, part of the white particulate matter will accumulate at the bottom of the internally threaded smoke pipes, and if not treated in time, the white particulate matter will stick to the wall and block the internally threaded smoke pipes, thereby increasing the system operation resistance, through the blowing of the lower blowing device 12, the particulate matter at the bottom is blown off, part of the particulate matter falls from top to bottom under the action of gravity, at this time, the design of the throat 13 can accelerate the flow velocity of the flue gas in the bottom area, and under the further blowing of the lower blowing device 12, most of the particulate matter passes through the internally threaded smoke pipes upwards under the subsequent induced draft.

[0031] The gas inlet device includes an air compressor or a nitrogen making machine and valves and pipeline structures, the compressed air from the air compressor or the compressed nitrogen from the nitrogen making machine is the main blowing work gas, the gas source is connected through a pipeline, and the work gas entering the upper blowing device 7 and the lower blowing device 12 can be adjusted through the adjusting valve 1 20, the adjusting valve 2 21 and the adjusting valve 3 22 respectively.

[0032] AsFigure 2 The working gas passing through the adjusting valve 22 is divided into eight groups of sub-pipes 24 by the time sequence controller 23. Each sub-pipe 24 is provided with a valve group 25, each valve group 25 corresponds to a group of ring pipes 26, each group of ring pipes 26 is divided into a plurality of branch pipes 27, and each branch pipe 27 is provided with a plurality of injection pipes 28 along the axial direction. For example, eight injection pipes 28 are arranged on each axis.

[0033] The sub-pipes 24 and the ring pipes 26 in the lower blowing device 12 are taken as the main pipes, and the branch pipes 27 and the injection pipes 28 are taken as the branch pipes.

[0034] During operation, the sub-pipes 24 work in sequence under the action of the time sequence controller 23, and the valve groups 25 also work in sequence. The valve groups 25 are arranged in the water-cooled wall 11, and the water-cooled protection of the water-cooled wall 11 enables the injection pipes 28 to complete the related injection work at a temperature of 850°C or above.

[0035] The ring pipes 26 and the branch pipes 27 are protected by refractory material pouring, and can also be temperature-resistant through the water-cooled protection of the water-cooled wall 11. The specific requirement is selected according to the temperature of the flue gas after heat exchange. The particles detached after the injection of the lower blowing device 12 mainly enter the subsequent process along the flue gas by the positive pressure of the induced draft fan and the flue gas, and the injection of the lower blowing device 12 is forward injection.

[0036] The upper blowing device 7 completes the particle blowing of the top and the inside of the inner threaded smoke pipe. The particles detached after the blowing mainly enter the subsequent process along the flue gas by the positive pressure of the induced draft fan and the flue gas after combustion, and the injection of the upper blowing device 7 is reverse injection.

[0037] As shown in Figure 3 The working gas passing through the adjusting valve 22 is divided into eight groups of sub-pipes 24 by the time sequence controller 23. Each sub-pipe 24 is provided with a valve group 25, each valve group 25 corresponds to a group of ring pipes 26, each group of ring pipes 26 is divided into a plurality of branch pipes 27, and each branch pipe 27 is provided with a plurality of injection pipes 28 along the axial direction. For example, eight injection pipes 28 are arranged on each axis.

[0038] The working gas passing through the adjusting valve 22 is divided into eight groups of sub-pipes 24 by the time sequence controller 23. Each sub-pipe 24 is provided with a valve group 25, each valve group 25 corresponds to a group of ring pipes 26, each group of ring pipes 26 is divided into a plurality of branch pipes 27, and each branch pipe 27 is provided with a plurality of injection pipes 28 along the axial direction. For example, eight injection pipes 28 are arranged on each axis.

[0039] As shown in Figure 4The upper tube plate 5 is provided with a plurality of fasteners, and a pressing plate 35 is connected, the pressing plate 35 can be provided in a partitioned manner and can be disassembled, and the upper tube plate 5 and the pressing plate 35 are sequentially provided with a high-temperature-resistant sealing pad 36 and a blowing acceleration port 37, the high-temperature-resistant sealing pad 36 has a certain elasticity and can complete sealing and temperature resistance under the pressing action of the fastener, and the blowing acceleration port 37 is used for further accelerating the blowing gas to better complete the soot blowing function. Each blowing pipe 34 is aligned with one internally threaded smoke pipe.

[0040] When arranged, the lower blowing device 12 is arranged close to the lower tube plate 6, and the lower tube plate 6 is arranged in an arc shape to better complete the blowing of the lower part. The blowing pipe 34 has a certain height distance from the pressing plate 35, so that the disassembly and maintenance can be better completed.

[0041] Through the implementation of the present application, a small waste gasification fuel gas boiler flue gas particle blowing device is provided, and the working medium can be compressed air or nitrogen. The following problems are mainly solved:

[0042] 1. A large amount of white particles are generated in the waste gasification process, and the main component is silicon dioxide, which has a certain adhesion, especially for the heat exchange smoke pipe of the small fuel gas boiler, which is easy to accumulate and block. The present application relates to the design of the upper and lower blowing devices and the corresponding protection measures to realize particle blowing and improve the stability of the system.

[0043] 2. The temperature in the working area of the lower blowing device is relatively high, generally exceeding 850 DEG C, and through the corresponding water cooling structure design, time sequence control design, lower tube plate, throat pipe and other structure design, the lower blowing work can be efficiently completed, and the particles blown down can be effectively entered into the subsequent process along with the flue gas after combustion, for forward blowing.

[0044] 3. The temperature in the working area of the upper blowing device is mainly 300~400 DEG C, and through the structure design, the upper time sequence reverse blowing function can be realized, and the corresponding maintenance and disassembly requirements can be met.

[0045] Those skilled in the art should understand that the embodiments of the present application shown in the above description and the drawings are only examples and do not limit the present application. The purpose of the present application has been completely and effectively realized. The function and structure principle of the present application has been shown and explained in the embodiments, and the implementation manner of the present application can be any deformation and modification without departing from the principle.

Claims

1. A waste gasification gas boiler with incineration flue gas particulate matter sweeping device, characterized by: The device comprises a cylinder (3), a burner (8), a flue (4), a blowing device and an air inlet device, the burner (8) is installed on the cylinder (3), the flue (4) is arranged at a heat exchange area in the cylinder (3), the blowing device comprises a blowing pipeline, the air inlet device is connected with the blowing pipeline, the blowing device is arranged in two groups, which are an upper blowing device (7) and a lower blowing device (12), the upper blowing device (7) and the lower blowing device (12) are arranged on the upper and lower sides of the flue (4) respectively and are used for reverse blowing and forward blowing of the flue (4) respectively.

2. The garbage gasification gas boiler with incineration flue gas particulate matter purging device according to claim 1, characterized in that: The blowing pipeline comprises a main pipeline and a plurality of branch pipelines, each flue (4) corresponds to a group of pipelines.

3. The waste gasification gas boiler with incineration flue gas particulate matter sweeping device according to claim 2, characterized in that: At least part of the outside of the blowing pipeline is provided with a refractory material.

4. The waste gasification gas boiler with incineration flue gas particulate matter sweeping device according to claim 2 or 3, characterized in that: The blowing device further comprises a valve body assembly, the blowing pipeline is connected with the valve body assembly and is used for realizing sequential blowing.

5. The waste gasification gas boiler with incineration flue gas particulate matter sweeping device according to claim 4, characterized in that: The cylinder (3) is provided with a throat (13), and the lower blowing device (12) is arranged at a position between the throat (13) and the flue (4).

6. The garbage gasification gas boiler with incineration flue gas particulate matter purging device according to claim 4, characterized in that: The cylinder (3) is provided with a water cooling area, and the valve body assembly of the lower blowing device (12) is arranged in the water cooling area.

7. The garbage gasification gas boiler with incineration flue gas particulate matter purging device according to claim 5, characterized in that: The heat exchange area in the cylinder (3) is closed and formed by an upper tube plate (5) and a lower tube plate (6), and the lower tube plate (6) is arc-shaped on the side facing the lower blowing device (12).

8. The waste gasification gas boiler with incineration flue gas particulate matter sweeping device according to any of claims 5-7, characterized in that: The branch pipeline of the upper blowing device (7) is provided with a blowing acceleration port (37).

9. The waste gasification gas boiler with incineration flue gas particulate matter sweeping device according to claim 8, characterized in that: One side of the blowing acceleration port (37) is provided with a high-temperature-resistant sealing gasket (36), and the other side is provided with a pressing plate (35), and the high-temperature-resistant sealing gasket (36) is located between the blowing acceleration port (37) and the upper tube plate (5).

10. The garbage gasification gas boiler with incineration flue gas particulate matter purging device according to claim 8, characterized in that: The air inlet device comprises an air compressor or a nitrogen making machine and is used for supplying compressed air or compressed nitrogen.

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