A vertical multi-stage reinforced carbonization reaction device for household garbage incineration slag

Abstract

The utility model relates to a furnace slag processing technical field, concretely relates to a vertical multistage reinforced carbonization reaction device for household garbage incineration slag, including carbonization furnace body, broken cylinder, air inlet pump and gas holder, the lateral surface fixed mounting of carbonization furnace body has annular heating cylinder, the broken cylinder fixed mounting is in the upper end of carbonization furnace body, the position fixedly connected with air inlet pipe is approached lower end in carbonization furnace body side, the air outlet end of air inlet pump is fixedly connected with air inlet pipe, the air outlet end of gas holder is fixedly connected with gas pipe, the one end away from gas holder of gas pipe is fixedly connected with the air inlet end of air inlet pump, carbon dioxide gas flows from below to above, makes the furnace slag to stay in the inside of carbonization furnace body for a long time and carries out the full reaction, improves carbonization efficiency, and forms countercurrent contact with the furnace slag, improves the utilization of carbon dioxide, and reduces the horizontal conveying link of furnace slag, reduces energy consumption and equipment complexity, and can effectively reduce the equipment volume, reduces the installation and use cost of equipment and site.

Description

Technical Field

[0001] This utility model relates to the field of slag treatment technology, specifically to a vertical multi-stage enhanced carbonization reaction device for municipal solid waste incineration slag. Background Technology

[0002] Household waste refers to solid waste generated in daily life or in activities that provide services for daily life, as well as solid waste that is considered household waste according to laws and administrative regulations. It can generally be divided into kitchen waste, recyclable waste, hazardous waste and other waste. Examples include leftover food, paper, plastics, glass, batteries, fluorescent tubes, etc., discarded in daily life. The residue after incineration of household waste mainly consists of slag, ferrous and non-ferrous metals, ceramic fragments, glass and other non-combustible materials and unburned organic matter, accounting for about 80% of the total weight of ash. It is necessary to ensure that the pH value of the leachate of the washed slag is within the range of 6-9, and that it meets the Class I general industrial solid waste standard before it is sold for backfilling and reclamation or for the production of cement, bricks, lightweight aggregates, concrete, ceramsite, and roadbed materials.

[0003] The slag from municipal solid waste incineration is mostly carbonized in carbonization furnaces. Existing carbonization furnaces are mostly horizontal. During operation, a transmission component is needed to rotate the furnace body to transport the slag to the other end. During the transport process, the slag tends to accumulate, affecting its reaction with carbon dioxide gas and thus the carbonization effect of the furnace. Consequently, the length of the furnace body needs to be extended to ensure sufficient reaction of the slag, resulting in a large equipment footprint, high installation and production costs, and high energy consumption.

[0004] Therefore, it is necessary to invent a vertical multi-stage enhanced carbonization reaction device for municipal solid waste incineration slag to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a vertical multi-stage enhanced carbonization reaction device for municipal solid waste incineration slag, in order to solve the problems of large equipment footprint, high installation and production costs, and high energy consumption in the technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vertical multi-stage enhanced carbonization reaction device for municipal solid waste incineration slag, comprising a carbonization furnace body, a crushing cylinder, an air pump, and a gas storage tank. An annular heating cylinder is fixedly installed on the side of the carbonization furnace body. The crushing cylinder is fixedly installed at the upper end of the carbonization furnace body. An air inlet pipe is fixedly connected to the side of the carbonization furnace body near the lower end. The air outlet of the air pump is fixedly connected to the air inlet pipe. A gas delivery pipe is fixedly connected to the air outlet of the gas storage tank. The end of the gas delivery pipe away from the gas storage tank is fixedly connected to the air inlet of the air pump. Multiple sets of inclined annular guide ribs are fixedly connected to the inner wall of the carbonization furnace body.

[0007] By adopting the above technical solution, the gas storage tank is used to store carbon dioxide gas, and the heating cylinder is heated by electricity or gas to heat the inside of the carbonization furnace, thereby heating the slag inside the carbonization furnace. At the same time, the air pump, in conjunction with the gas storage tank, blows the carbon dioxide gas flow obliquely into the inside of the carbonization furnace. The rotating air flow lifts the slag, causing it to fall slowly, increasing the residence time inside the carbonization furnace. Meanwhile, the rotating air flow will disperse the slag, allowing the carbon dioxide to fully contact and react with the slag, thus improving the reaction efficiency between carbon dioxide and slag.

[0008] Optionally, a spiral annular heating tube is fixedly connected inside the carbonization furnace body, with a smoke inlet pipe fixedly connected to the upper end of the annular heating tube and a smoke exhaust pipe fixedly connected to the lower end of the annular heating tube.

[0009] Optionally, the ends of the inlet pipe and the outlet pipe away from the annular heating pipe both extend through the carbonization furnace body and the heating cylinder to the outside.

[0010] By adopting the above technical solution, the flue gas inlet pipe is connected to the combustion furnace, and the waste heat generated by the combustion furnace is guided to the interior of the carbonization furnace. The interior of the carbonization furnace is then uniformly heated by the annular heating pipe, thereby reducing the amount of electricity or gas consumed by the heating cylinder and effectively reducing energy consumption.

[0011] Optionally, an exhaust pipe is fixedly connected to the side of the carbonization furnace body near the upper end.

[0012] By adopting the above technical solution, the exhaust pipe is used to discharge the gas and dust inside the carbonization furnace. The end of the exhaust pipe away from the carbonization furnace is connected to a dust collector and a filter. The dust collector and filter work together to filter the dust and harmful substances in the gas.

[0013] Optionally, a drive shaft is provided inside the crushing cylinder, and multiple sets of crushing blades are fixedly connected to the surface of the drive shaft. The lower end of the drive shaft extends into the interior of the carbonization furnace body and is fixedly connected to a dispersing fan blade.

[0014] By adopting the above technical solution, the crushing blades are used to crush the incoming slag into small particles, while the dispersing blades are used to evenly disperse the crushed slag into the interior of the carbonization furnace, so that the slag and carbon dioxide can fully contact each other, which facilitates the reaction between the slag and carbon dioxide and further improves the reaction efficiency.

[0015] Optionally, a driving component is fixedly installed at the upper end of the crushing cylinder, and the output end of the driving component is fixedly connected to the upper end of the transmission shaft.

[0016] By adopting the above technical solution, the driving component is used to drive the transmission shaft to rotate.

[0017] Optionally, the upper end of the crushing cylinder is fixedly connected to two sets of feed pipes, and the lower end of the carbonization furnace body is fixedly connected to a discharge pipe, with a pneumatic valve installed inside the discharge pipe.

[0018] By adopting the above technical solution, the feed pipe is used to guide the screened slag into the interior of the crushing cylinder, the discharge pipe is used to discharge the slag after carbonization reaction, and the pneumatic valve is used to control the amount of slag discharged.

[0019] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0020] 1. This utility model utilizes an air pump to obliquely blow carbon dioxide airflow from the gas storage tank into the interior of the carbonization furnace. With the help of annular guide ribs, the airflow rotates and rises upward, lifting the slag and slowing down the slag's descent speed. This allows the slag to remain inside the carbonization furnace for a longer period of time. At the same time, the rotating airflow, combined with the dispersing fan blades, disperses the slag, allowing carbon dioxide to fully contact and react with the slag, thus improving the reaction efficiency between carbon dioxide and slag. This, in turn, reduces the size of the equipment, improves the ease of installation, and lowers installation and production costs.

[0021] 2. This utility model utilizes an annular heating tube to guide the waste heat generated by the combustion furnace into the interior of the carbonization furnace, and uniformly heats the interior of the carbonization furnace body through the annular heating tube, thereby reducing the amount of electricity or gas consumed by the heating cylinder, effectively reducing energy consumption, and further reducing production costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the external structure of the carbonization furnace of this utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the carbonization furnace of this utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of the crushing cylinder of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Carbonization furnace body; 11. Heating cylinder; 12. Annular heating tube; 13. Smoke inlet pipe; 14. Smoke outlet pipe; 15. Material discharge pipe; 16. Pneumatic valve; 17. Air inlet pipe; 18. Exhaust pipe; 19. Annular guide rib; 2. Crushing cylinder; 21. Feed pipe; 22. Drive component; 23. Drive shaft; 24. Crushing blades; 25. Dispersing fan blades; 3. Air pump; 4. Gas storage tank; 41. Gas delivery pipe. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0029] This utility model provides, for example Figures 1 to 4 The vertical multi-stage enhanced carbonization reactor for municipal solid waste incineration slag shown includes a carbonization furnace body 1, a crushing cylinder 2, an air pump 3, and an air storage tank 4. An annular heating cylinder 11 is fixedly installed on the side of the carbonization furnace body 1. The crushing cylinder 2 is fixedly installed at the upper end of the carbonization furnace body 1. Two sets of feed pipes 21 are fixedly connected to the upper end of the crushing cylinder 2. A discharge pipe 15 is fixedly connected to the lower end of the carbonization furnace body 1. A pneumatic valve 16 is installed inside the discharge pipe 15. A spiral annular heating pipe 12 is fixedly connected inside the carbonization furnace body 1. A flue gas inlet pipe 13 is fixedly connected to the upper end of the annular heating pipe 12. A flue gas outlet pipe 14 is fixedly connected to the lower end of the annular heating pipe 12. The ends of the flue gas inlet pipe 13 and the flue gas outlet pipe 14 away from the annular heating pipe 12 both penetrate the carbonization furnace body 1 and the heating cylinder 11 and extend to the outside.

[0030] The heating cylinder 11 and the annular heating tube 12 are used to heat the interior of the carbonization furnace body 1. The heating cylinder 11 is heated by gas or electricity, and the annular heating tube 12 introduces the residual heat inside the incinerator into its interior through the flue pipe 13 to heat the interior of the carbonization furnace body 1, thereby reducing gas or electricity consumption.

[0031] During use, the interior of the carbonization furnace body 1 is first preheated by the annular heating tube 12 in conjunction with the heating cylinder 11. Then, the screened slag is introduced into the interior of the crushing cylinder 2 through the feed pipe 21, where it is crushed to further reduce the particle size of the slag. The crushed slag falls directly into the interior of the carbonization furnace body 1 for carbonization treatment. The carbonized slag is discharged through the discharge pipe 15, and its discharge rate is controlled by the pneumatic valve 16.

[0032] See Figures 1 to 3 An air inlet pipe 17 is fixedly connected to the side of the carbonization furnace body 1 near the lower end, and an exhaust pipe 18 is fixedly connected to the side of the carbonization furnace body 1 near the upper end. The outlet end of the air pump 3 is fixedly connected to the air inlet pipe 17. The outlet end of the gas storage tank 4 is fixedly connected to the gas delivery pipe 41. The end of the gas delivery pipe 41 away from the gas storage tank 4 is fixedly connected to the air inlet end of the air pump 3. Multiple sets of inclined annular guide ribs 19 are fixedly connected to the inner wall of the carbonization furnace body 1.

[0033] Simultaneously, when the slag is introduced into the crushing cylinder 2, the valves of the air inlet pump 3 and the air storage tank 4 are opened. The air inlet pump 3 introduces the carbon dioxide gas inside the air storage tank 4 into the carbonization furnace body 1 from the bottom through the air inlet pipe 17. As multiple sets of annular guide ribs 19 spiral upward inside the carbonization furnace body 1, the high-speed rising airflow supports the falling slag, slows down the slag's falling speed, and increases the residence time of the slag inside the carbonization furnace body 1, thereby increasing the reaction time. At the same time, the rotating airflow disperses the slag, making it evenly distributed inside the carbonization furnace body 1. The carbon dioxide gas flows downward from the bottom, forming a countercurrent contact with the slag, improving the utilization rate of carbon dioxide and effectively improving the carbonization efficiency of the slag. This allows carbonization to be completed inside the small-volume carbonization furnace body 1, thereby effectively reducing the equipment volume, reducing horizontal conveying links, reducing equipment energy consumption and equipment complexity, and reducing equipment and site installation and production costs.

[0034] Furthermore, by controlling the size of the incoming airflow, the slag falling speed can be adjusted. Different airflow sizes can be adjusted for different carbonization reactions of different materials, thereby improving the adaptability of the equipment.

[0035] See Figure 3 and Figure 4 The crushing cylinder 2 is equipped with a drive shaft 23. Multiple sets of crushing blades 24 are fixedly connected to the surface of the drive shaft 23. The lower end of the drive shaft 23 extends into the interior of the carbonization furnace body 1 and is fixedly connected to a dispersing fan blade 25. A drive component 22 is fixedly installed at the upper end of the crushing cylinder 2. The output end of the drive component 22 is fixedly connected to the upper end of the drive shaft 23.

[0036] In addition, after the slag enters the crushing cylinder 2, the drive component 22 (the drive component 22 is existing technology and will not be described in detail here) drives the transmission shaft 23 to rotate. The transmission shaft 23 drives multiple sets of crushing blades 24 to rotate inside the crushing cylinder 2 to crush the slag. At the same time, the transmission shaft 23 drives the dispersing fan blades 25 to rotate to disperse the crushed slag, so that it is evenly dispersed inside the carbonization furnace body 1, further improving the uniformity of slag dispersion and improving the reaction efficiency.

[0037] The working principle of this utility model is as follows: First, the interior of the carbonization furnace body 1 is heated by the cooperation of the annular heating tube 12 and the heating cylinder 11. The slag is introduced into the interior of the crushing cylinder 2 and crushed by the crushing cylinder 2. Then, the disperser blades 25 disperse the crushed slag evenly inside the carbonization furnace body 1. At the same time, the air pump 3 delivers carbon dioxide gas along with the airflow from the bottom to the interior of the carbonization furnace body 1 to support the falling slag, delay the slag's falling time, and allow the slag to stay inside the carbonization furnace body 1 for a longer period of time to fully react. The carbon dioxide gas flows from bottom to top, forming a countercurrent contact with the slag, which improves the utilization rate of carbon dioxide. Furthermore, the slag can fall freely, reducing the horizontal conveying of slag, reducing energy consumption and equipment complexity, thereby effectively reducing the equipment volume and the installation and use costs of the equipment and site.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A vertical multi-stage enhanced carbonization reaction device for municipal solid waste incineration slag, comprising a carbonization furnace body (1), a crushing cylinder (2), an air inlet pump (3), and an air storage tank (4), characterized in that: A ring-shaped heating cylinder (11) is fixedly installed on the side of the carbonization furnace body (1). The crushing cylinder (2) is fixedly installed on the upper end of the carbonization furnace body (1). An air inlet pipe (17) is fixedly connected to the side of the carbonization furnace body (1) near the lower end. The air outlet of the air pump (3) is fixedly connected to the air inlet pipe (17). The air outlet of the gas storage tank (4) is fixedly connected to the gas delivery pipe (41). The end of the gas delivery pipe (41) away from the gas storage tank (4) is fixedly connected to the air inlet of the air pump (3). Multiple sets of inclined annular guide ribs (19) are fixedly connected to the inner wall of the carbonization furnace body (1).

2. The vertical multi-stage enhanced carbonization reaction device for municipal solid waste incineration slag according to claim 1, characterized in that: The carbonization furnace body (1) is internally connected to a spiral annular heating tube (12), the upper end of the annular heating tube (12) is fixedly connected to a smoke inlet pipe (13), and the lower end of the annular heating tube (12) is fixedly connected to a smoke exhaust pipe (14).

3. A vertical multi-stage enhanced carbonization reaction device for municipal solid waste incineration slag according to claim 2, characterized in that: The ends of the inlet pipe (13) and the outlet pipe (14) away from the annular heating pipe (12) both extend through the carbonization furnace body (1) and the heating cylinder (11) to the outside.

4. A vertical multi-stage enhanced carbonization reaction device for municipal solid waste incineration slag according to claim 1, characterized in that: An exhaust pipe (18) is fixedly connected to the side of the carbonization furnace body (1) near the upper end.

5. A vertical multi-stage enhanced carbonization reaction device for municipal solid waste incineration slag according to claim 1, characterized in that: The crushing cylinder (2) is equipped with a drive shaft (23) inside. Multiple sets of crushing blades (24) are fixedly connected to the surface of the drive shaft (23). The lower end of the drive shaft (23) extends into the interior of the carbonization furnace body (1) and is fixedly connected with a dispersing fan blade (25).

6. A vertical multi-stage enhanced carbonization reaction device for municipal solid waste incineration slag according to claim 1, characterized in that: A drive unit (22) is fixedly installed at the upper end of the crushing cylinder (2), and the output end of the drive unit (22) is fixedly connected to the upper end of the transmission shaft (23).

7. A vertical multi-stage enhanced carbonization reaction device for municipal solid waste incineration slag according to claim 1, characterized in that: The upper end of the crushing cylinder (2) is fixedly connected to two sets of feed pipes (21), and the lower end of the carbonization furnace body (1) is fixedly connected to a discharge pipe (15). A pneumatic valve (16) is installed inside the discharge pipe (15).

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