Feed inlet device of solid waste incineration system

Abstract

The utility model relates to the technical field of solid waste incineration, and provides a feed port device of a solid waste incineration system. The system comprises a hopper, a stock bin, a material pushing and combustion system, an exhaust device, a nitrogen making device and a monitoring controller. A partition device is arranged on the material pipe, divides the interior of the material bin into a feeding bin and a discharging bin and is communicated with the exhaust device and the nitrogen making device. The isolating device comprises three isolating valves which respectively form a feeding bin and a discharging bin. The feeding bin and the discharging bin are each provided with an oxygen detection probe, a pressure detection probe, a temperature detection probe, a nitrogen conveying port and an air exhaust port, and the nitrogen conveying ports and the air exhaust ports are communicated with the nitrogen making device and the exhaust device respectively. And the exhaust device and the nitrogen making device are respectively provided with a plurality of control valves which are controlled by the monitoring controller. According to the system, material combustion and explosion are effectively prevented through graded feeding, oxygen content control and nitrogen fire extinguishing, equipment damage is reduced, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solid waste incineration, in particular to a feed inlet device of a solid waste incineration system. Background Art

[0002] Hazardous waste incineration is a mainstream process for hazardous waste treatment. During this process, combustion and even explosions often occur at the feed inlet, causing varying degrees of damage to the equipment. To prevent combustion and explosions at the feed inlet and minimize damage to the equipment, we aim to stabilize production and reduce equipment losses.

[0003] Therefore, there is an urgent need to develop a feed inlet device for a solid waste incineration system that can reduce damage to equipment. Utility Model Content

[0004] The purpose of the utility model is to solve the deficiencies of the prior art and provide a feed inlet device for a solid waste incineration system, thereby reducing damage to the equipment caused by direct combustion or explosion of solid waste in the silo and extending the service life of the equipment.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A feed inlet device of a solid waste incineration system includes a hopper, a silo arranged below the hopper, an exhaust device, a nitrogen generator, and a monitoring controller. The silo is provided with a partition device, which divides the interior of the silo into a feed silo and a discharge silo from top to bottom. The feed silo is respectively connected to the exhaust device and the nitrogen generator, and the discharge silo is respectively connected to the exhaust device and the nitrogen generator. The bottom of the silo is connected to a pushing and combustion system, and the monitoring controller is respectively electrically connected to the feed silo, the discharge silo, the exhaust device, and the nitrogen generator.

[0007] Preferably, the isolation device includes a first isolation valve, a second isolation valve and a third isolation valve, a feed bin is formed between the first isolation valve and the second isolation valve, and a discharge bin is formed between the second isolation valve and the third isolation valve.

[0008] Preferably, the feed bin is provided with a first oxygen detection probe, a first pressure detection probe, a first temperature detection probe, a first nitrogen delivery port and a first air exhaust port, the first nitrogen delivery port is connected to the nitrogen production device, and the first air exhaust port is connected to the exhaust device; the discharge bin is provided with a second oxygen detection probe, a second pressure detection probe, a second temperature detection probe, a second nitrogen delivery port and a second air exhaust port, the second nitrogen delivery port is connected to the nitrogen production device, and the second air exhaust port is connected to the exhaust device.

[0009] Preferably, the exhaust device is provided with a first exhaust control valve, a second exhaust control valve and a third exhaust control valve, the first exhaust control valve is arranged at the upper end of the exhaust device, the second exhaust control valve is arranged between the first air exhaust port and the exhaust device, and the third exhaust control valve is arranged between the second air exhaust port and the exhaust device.

[0010] Preferably, the nitrogen generating device is provided with a first nitrogen supply control valve, a second nitrogen supply control valve and a third nitrogen supply control valve, the first nitrogen supply control valve is provided at the end of the nitrogen generating device, the second nitrogen supply control valve is provided between the first nitrogen delivery port and the nitrogen generating device, and the third nitrogen supply control valve is provided between the second nitrogen delivery port and the nitrogen generating device.

[0011] Preferably, the pushing and combustion system is provided with a monitoring controller, the input end of the monitoring controller is electrically connected to the first oxygen detection probe, the first pressure detection probe, the first temperature detection probe, the second oxygen detection probe, the second pressure detection probe, and the second temperature detection probe, respectively, and the output end of the monitoring controller is electrically connected to the first exhaust control valve, the second exhaust control valve, the third exhaust control valve, the first nitrogen supply control valve, the second nitrogen supply control valve, and the third nitrogen supply control valve, respectively.

[0012] Preferably, the nitrogen production device adopts a pressure swing adsorption nitrogen production machine.

[0013] Preferably, the exhaust device adopts a start-stop air pump.

[0014] The utility model discloses a feed inlet device of a solid waste incineration system, which has the following beneficial effects.

[0015] First, by setting up isolation devices and multiple isolation valves, the feed bin and the discharge bin are separated, thereby achieving graded feeding and preventing materials from entering other equipment during combustion and explosion, causing equipment damage or endangering personnel safety.

[0016] Secondly, by installing oxygen, pressure and temperature detection probes, as well as nitrogen delivery ports and air exhaust ports in the feed and discharge silos, the pressure and oxygen content in the silos can be monitored and adjusted in real time, reducing damage to the equipment caused by combustion or explosion and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the feed inlet device of the solid waste incineration system in the present utility model.

[0018] Figure 2 This is a schematic diagram of the middle silo of the utility model.

[0019] Figure 3 This is a schematic diagram of the input and output terminals of the monitoring controller in this utility model.

[0020] In the accompanying drawings: 1. Hopper; 2. Isolation device; 21. First isolation valve; 22. Second isolation valve; 23. Third isolation valve; 3. Feed bin; 31. First oxygen detection probe; 32. First pressure detection probe; 33. First temperature detection probe; 34. First nitrogen delivery port; 35. First air exhaust port; 4. Discharge bin; 41. Second oxygen detection probe; 42. Second pressure detection probe; 43. Second temperature detection probe; 44. Second nitrogen delivery port; 45. Second air exhaust port; 5. Pushing and combustion system; 6. Exhaust device; 61. First exhaust control valve; 62. Second exhaust control valve; 63. Third exhaust control valve; 7. Nitrogen production device; 71. First nitrogen supply control valve; 72. Second nitrogen supply control valve; 73. Third nitrogen supply control valve; 8. Monitoring controller; 9. Silo. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They 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. Therefore, they cannot be understood as limitations on the present invention.

[0023] The utility model discloses a feed inlet device for a solid waste incineration system. When feeding solid waste incineration materials, the device prevents the materials from entering other equipment during combustion and explosion, thereby causing damage to the equipment or endangering personnel safety.

[0024] Reference Figure 1 , a feeding port device of a solid waste incineration system, comprising a hopper 1, a silo 9 arranged below the hopper 1, the top of the silo 9 welded to the bottom of the hopper 1, the bottom of the silo 9 welded to the top of a pushing and combustion system 5, an exhaust device 6, a nitrogen generator 7, and a monitoring controller 8, a partition device 2 is fixed to the silo 9 through a flange, and the partition device 2 divides the internal space of the silo 9 into a feeding silo 3 and a discharging silo 4 from top to bottom, the feeding silo 3 is respectively connected to the exhaust device 6 and the nitrogen generator 7 through a pipeline, the discharging silo 4 is respectively connected to the exhaust device 6 and the nitrogen generator 7 through a pipeline, the bottom of the silo 9 is connected to the pushing and combustion system 5, and the monitoring controller 8 is electrically connected to the feeding silo 3, the discharging silo 4, the exhaust device 6 and the nitrogen generator 7 through an electric wire;

[0025] Specific as Figure 2 As shown, the isolation device 2 includes a first isolation valve 21, a second isolation valve 22 and a third isolation valve 23. The isolation valves are water-cooled plug valves. A feed bin 3 is formed between the first isolation valve 21 and the second isolation valve 22, and a discharge bin 4 is formed between the second isolation valve 22 and the third isolation valve 23.

[0026] The feed bin 3 is provided with a first oxygen detection probe 31, a first pressure detection probe 32, a first temperature detection probe 33, a first nitrogen delivery port 34 and a first air exhaust port 35. Specifically, the first oxygen detection probe 31, the first pressure detection probe 32 and the first temperature detection probe 33 are fixed to the feed bin 3 through a pipe with an internal thread provided on the outer wall of the feed bin 3. The first nitrogen delivery port 34 and the first air exhaust port 35 are pipes welded to the outer wall of the feed bin 3. The first nitrogen delivery port 34 is connected to the nitrogen generator 7 through a pipe, and the first air exhaust port 35 is connected to the exhaust device 6 through a pipe. The discharge bin 4 is provided with a second oxygen detection probe 41, a second pressure detection probe 42, a second temperature detection probe 43, a second nitrogen delivery port 44, and a second air exhaust port 45. Specifically, the second oxygen detection probe 41, the second pressure detection probe 42, and the second temperature detection probe 43 are fixed to the discharge bin 4 through a pipe with an internal thread provided on the outer wall of the discharge bin 4. The second nitrogen delivery port 44 and the second air exhaust port 45 are pipes welded to the outer wall of the feed bin 3. The second nitrogen delivery port 44 is connected to the nitrogen production device 7 through a pipe, and the second air exhaust port 45 is connected to the exhaust device 6 through a pipe.

[0027] Specifically, the exhaust device 6 is provided with a first exhaust control valve 61, a second exhaust control valve 62 and a third exhaust control valve 63. The control valves are electric valves. The first exhaust control valve 61 is provided at the upper end of the exhaust device 6, and is used to simultaneously control the connection status of the exhaust device 6 with the first air exhaust port 35 and the second air exhaust port 45. The second exhaust control valve 62 is provided between the first air exhaust port 35 and the exhaust device 6, and is used to separately control the connection status of the exhaust device 6 with the first air exhaust. The third exhaust control valve 63 is provided between the second air exhaust port 45 and the exhaust device 6, and is used to separately control the connection status of the exhaust device 6 with the second air exhaust port 45.

[0028] The nitrogen generator 7 is equipped with a first nitrogen supply control valve 71, a second nitrogen supply control valve 72, and a third nitrogen supply control valve 73. These control valves are electrically operated. The first nitrogen supply control valve 71 is located at the upper end of the nitrogen generator 7 and is used to simultaneously control the connection between the nitrogen generator 7 and the first and second nitrogen supply ports 34, 44. The second nitrogen supply control valve 72 is located between the first nitrogen supply port 34 and the nitrogen generator 7 and is used to independently control the connection between the nitrogen generator 7 and the first nitrogen supply port 34. The third nitrogen supply control valve 73 is located between the second nitrogen supply port 44 and the nitrogen generator 7 and is used to independently control the connection between the nitrogen generator 7 and the second nitrogen supply port 44. The nitrogen generator 7 utilizes a pressure swing adsorption nitrogen generator. The exhaust device 6 utilizes a start-stop air pump.

[0029] like Figure 3 As shown, the monitoring controller 8 adopts a PLC control system, and the input end of the monitoring controller 8 is electrically connected to the first oxygen detection probe 31, the first pressure detection probe 32, the first temperature detection probe 33, the second oxygen detection probe 41, the second pressure detection probe 42, and the second temperature detection probe 43 through wires, and the output end of the monitoring controller 8 is electrically connected to the first exhaust control valve 61, the second exhaust control valve 62, the third exhaust control valve 63, the first nitrogen supply control valve 71, the second nitrogen supply control valve 72, and the third nitrogen supply control valve 73 through wires.

[0030] In this embodiment, hazardous waste materials first enter the hopper 1, enter the feed bin 3 through the first isolation valve 21, the materials in the feed bin 3 enter the discharge bin 4 through the second isolation valve 22, and the materials in the discharge bin 4 enter the pushing and combustion system 5 through the third isolation valve 23. The feed bin 3 and the discharge bin 4 form a graded feeding through the first isolation valve 21, the second isolation valve 22 and the third isolation valve 23 to prevent the materials from entering other equipment during combustion and explosion, causing equipment damage or endangering personnel safety.

[0031] When the first oxygen detection probe 31 detects that the oxygen concentration in the feed bin 3 is too high, the exhaust device 6 and the nitrogen generator 7 are started, the first exhaust control valve 61 and the second exhaust control valve 62, the first nitrogen supply control valve 71 and the second nitrogen supply control valve 72 are opened, and the oxygen concentration in the feed bin 3 is reduced. When the oxygen concentration is reduced to the set value, the exhaust device 6 stops pumping air, the first exhaust control valve 61 and the second exhaust control valve 62 are closed, and when the pressure value returns to the set value range, the nitrogen generator 7 is closed, and the first nitrogen supply control valve 71 and the second nitrogen supply control valve 72 are closed;

[0032] When the second oxygen detection probe 41 detects that the oxygen concentration in the discharge bin 4 is too high, the exhaust device 6 and the nitrogen generator 7 are started, the first exhaust control valve 61 and the third exhaust control valve 63, the first nitrogen supply control valve 71 and the third nitrogen supply control valve 73 are opened to reduce the oxygen concentration in the discharge bin 4. When the oxygen concentration drops to the set value, the exhaust device 6 stops pumping air, the first exhaust control valve 61 and the third exhaust control valve 63 are closed, and when the pressure value returns to the set value range, the nitrogen generator 7 is closed, and the first nitrogen supply control valve 71 and the third nitrogen supply control valve 73 are closed.

[0033] When the first temperature detection probe 33 in the feed bin 3 detects that the temperature of the material in the feed bin 3 is too high and reaches the combustion temperature, the nitrogen generating device 7 and the exhaust device 6 are started to start supplying nitrogen, the first nitrogen supply control valve 71 and the second nitrogen supply control valve 72, the first exhaust control valve 61 and the second exhaust control valve 62 are opened, and nitrogen is introduced into the feed bin 3 to extinguish the flame in the feed bin 3 and prevent the pressure in the feed bin 3 from being too high. When the temperature drops to the set value, the nitrogen generating device 7 is closed, the supply of nitrogen is stopped, the first nitrogen supply control valve 71 and the second nitrogen supply control valve 72 are closed, and when the pressure value returns to the set value range, the exhaust device 6 is closed, and the first exhaust control valve 61 and the second exhaust control valve 62 are closed;

[0034] When the second temperature detection probe 43 in the discharge bin 4 detects that the temperature of the material in the discharge bin 4 is too high and reaches the combustion temperature, the nitrogen generating device 7 and the exhaust device 6 are started to deliver nitrogen. The first nitrogen supply control valve 71 and the third nitrogen supply control valve 73, the first exhaust control valve 61 and the third exhaust control valve 63 are opened, and nitrogen is passed into the discharge bin 4 to extinguish the flame in the discharge bin 4 and prevent the pressure in the feed bin 3 from being too high. When the temperature drops to the set value, the nitrogen generating device 7 is closed, the delivery of nitrogen is stopped, the first nitrogen supply control valve 71 and the third nitrogen supply control valve 73 are closed, and when the pressure value returns to the set value range, the exhaust device 6 is closed, and the first exhaust control valve 61 and the third exhaust control valve 63 are closed.

[0035] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Replacements may include partial structures, devices, or method steps, or they may be complete technical solutions. Equivalent replacements or modifications based on the technical solution and its concept of the present invention are intended to fall within the scope of protection of the present invention.

Claims

1. A feed inlet device for a solid waste incineration system, characterized in that: The invention comprises a hopper (1), a silo (9) arranged below the hopper (1), an exhaust device (6), a nitrogen generator (7), and a monitoring controller (8); the silo (9) is provided with a partition device (2); the partition device (2) divides the interior of the silo (9) into a feed silo (3) and a discharge silo (4) from top to bottom; the feed silo (3) is respectively connected to the exhaust device (6) and the nitrogen generator (7); the discharge silo (4) is respectively connected to the exhaust device (6) and the nitrogen generator (7); the bottom of the silo (9) is connected to a pushing and combustion system (5); and the monitoring controller (8) is respectively electrically connected to the feed silo (3), the discharge silo (4), the exhaust device (6), and the nitrogen generator (7).

2. The feed inlet device of a solid waste incineration system according to claim 1, characterized in that: The isolation device includes a first isolation valve, a second isolation valve and a third isolation valve. A feed bin is formed between the first isolation valve and the second isolation valve, and a discharge bin is formed between the second isolation valve and the third isolation valve.

3. The feed inlet device of a solid waste incineration system according to claim 1, characterized in that: The feed bin (3) is provided with a first oxygen detection probe (31), a first pressure detection probe (32), a first temperature detection probe (33), a first nitrogen delivery port (34) and a first air exhaust port (35); the first nitrogen delivery port (34) is connected to the nitrogen generating device (7), and the first air exhaust port (35) is connected to the exhaust device (6); the discharge bin (4) is provided with a second oxygen detection probe (41), a second pressure detection probe (42), a second temperature detection probe (43), a second nitrogen delivery port (44) and a second air exhaust port (45); the second nitrogen delivery port (44) is connected to the nitrogen generating device (7), and the second air exhaust port (45) is connected to the exhaust device (6).

4. The feed inlet device of a solid waste incineration system according to claim 1, characterized in that: The exhaust device (6) is provided with a first exhaust control valve (61), a second exhaust control valve (62) and a third exhaust control valve (63), wherein the first exhaust control valve (61) is provided at the upper end of the exhaust device (6), the second exhaust control valve (62) is provided between the first air exhaust port (35) and the exhaust device (6), and the third exhaust control valve (63) is provided between the second air exhaust port (45) and the exhaust device (6).

5. The feed inlet device of a solid waste incineration system according to claim 1, characterized in that: The nitrogen generating device is provided with a first nitrogen supply control valve, a second nitrogen supply control valve and a third nitrogen supply control valve. The first nitrogen supply control valve is provided at the upper end of the nitrogen generating device, the second nitrogen supply control valve is provided between the first nitrogen delivery port and the nitrogen generating device, and the third nitrogen supply control valve is provided between the second nitrogen delivery port and the nitrogen generating device.

6. The feed inlet device of a solid waste incineration system according to claim 1, characterized in that: The input end of the monitoring controller (8) is electrically connected to the first oxygen detection probe (31), the first pressure detection probe (32), the first temperature detection probe (33), the second oxygen detection probe (41), the second pressure detection probe (42), and the second temperature detection probe (43), respectively; and the output end of the monitoring controller (8) is electrically connected to the first exhaust control valve (61), the second exhaust control valve (62), the third exhaust control valve (63), the first nitrogen supply control valve (71), the second nitrogen supply control valve (72), and the third nitrogen supply control valve (73), respectively.

7. The feed inlet device of a solid waste incineration system according to claim 1, characterized in that: The nitrogen making device adopts a pressure swing adsorption nitrogen making machine.

8. The feed inlet device of a solid waste incineration system according to claim 1, characterized in that: The exhaust device adopts a start-stop air pump.

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