A multi-component collaborative device for incineration systems

Abstract

The utility model discloses a kind of multi-component collaborative devices of incineration system, including rotary kiln and two combustion chambers, and the connecting flue connected between the two, rotary kiln is cylindrical, and it is in the way of inclination and extends into connecting flue;The outside of connecting flue is equipped with auxiliary burner, the inner ring of auxiliary burner is uniformly connected with multiple fuel extension spray head, the middle section inside of two combustion chambers is equipped with combustion ring, the start of rotary kiln is equipped with frequency conversion motor below;The start of rotary kiln is equipped with residual liquid pipe, and extends into rotary kiln, the end of rotary kiln is equipped with scale contact type sealing ring, scale contact type sealing ring is fixedly connected with connecting flue.This design is mutually coordinated with two combustion chambers through rotary kiln, and the residual liquid of methane chlorides added in rotary kiln is continuously rotated, so that the residual liquid of methane chlorides is evaporated, cracked into small molecule combustible gas and carbon residue, then is transported to two combustion chambers, and the gaseous pollutant that is not burnt is combusted secondly and thoroughly.

Description

Technical Field

[0001] This utility model relates to the field of methane chlorination and incineration technology, and in particular to a multi-component collaborative device for an incineration system. Background Technology

[0002] Methane chloride residue primarily originates from the distillation stage of the methane chloride production process. During methane chloride production, a mixture of various chloromethanes is generated simultaneously, such as monochloromethane, dichloromethane, trichloromethane, and carbon tetrachloride, which need to be separated using a distillation column. Methane chloride residue is an industrial waste liquid containing high concentrations of toxic and harmful chlorinated organic compounds generated during methane chloride production. These chlorinated organic compounds are chemically stable and difficult to degrade in the natural environment, accumulating over a long period in water bodies, soil, and organisms. They can bioaccumulate through the food chain and ultimately enter the human body, posing a health hazard.

[0003] In existing technologies, methane chloride residues are typically incinerated to meet emission standards before being discharged. Incineration involves the residue entering the incinerator through nozzles, where it combines with internal gases for combustion, achieving oxidation or cracking. However, due to gravity, the organic residue tends to fall to the bottom of the incinerator when it enters, causing some residue to accumulate before it can be oxidized and decomposed. This results in low incineration efficiency, incomplete combustion, and secondary pollution. Utility Model Content

[0004] This invention addresses the technical problem of secondary pollution caused by incomplete combustion of methane chloride residue due to gravity during incineration. It provides a multi-component collaborative device for an incineration system, including a rotary kiln and a secondary combustion chamber, and a connecting flue between the two. The connecting flue is connected to the middle of the secondary combustion chamber, and the rotary kiln is cylindrical and extends into the connecting flue at an angle.

[0005] An auxiliary burner is fitted around the outer side of the connecting flue. Multiple fuel extension nozzles are evenly connected to the inner ring of the auxiliary burner and extend into the interior of the rotary kiln's end. The inner wall of the rotary kiln is coated with refractory material. A combustion ring is located inside the middle section of the secondary combustion chamber, and multiple flame nozzles are evenly distributed along the inner ring of the combustion ring.

[0006] A transmission gear is fixedly connected to the beginning of the rotary kiln, and a variable frequency motor is provided below the beginning of the rotary kiln. A drive gear that meshes with the transmission gear is fixedly connected to the rotation output end of the variable frequency motor.

[0007] The rotary kiln has a residual liquid pipe at the beginning that extends into the rotary kiln, and a fish-scale contact sealing ring is fitted at the end of the rotary kiln. The fish-scale contact sealing ring is fixedly connected to the connecting flue.

[0008] Preferably, the above technical solution further includes a fan and an output air duct connected to one side of the fan, the output air duct being connected to the bottom of the secondary combustion chamber.

[0009] Preferably, in the above technical solution, the bottom of the secondary combustion chamber is provided with a fan plate, the fan plate is connected to the output air duct, and the top of the fan plate is provided with multiple vertical air outlets evenly distributed.

[0010] Preferably, in the above technical solution, the output air duct is provided with a tee pipe and connected to a branch pipe, and the end of the branch pipe is provided with a branch pipe reducing bend pipe and extends into the beginning of the rotary kiln.

[0011] Preferably, in the above technical solution, the end of the residual liquid pipe is provided with a residual liquid reducing bend pipe, which extends into the beginning of the rotary kiln. The cross-sections of the branch pipe reducing bend pipe and the residual liquid reducing bend pipe are both semi-circular and symmetrical to each other.

[0012] Preferably, in the above technical solution, the outer sides of the branch pipe reducing bend and the residual liquid reducing bend are fitted with clamps and overlap to form a round pipe.

[0013] Preferably, in the above technical solution, the rotary kiln is provided with a sealed bearing at the beginning, the inner ring of the sealed bearing is fixedly connected to the branch pipe reducing bend and the residual liquid reducing bend, and a control valve is provided on the branch pipe.

[0014] Preferably, in the above technical solution, the tilt angle of the rotary kiln is 2°~5°.

[0015] Preferably, in the above technical solution, a filter plate is provided at the bottom of the secondary combustion chamber, and the filter plate is located above the fan coil unit.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention utilizes the coordinated operation of a rotary kiln and a secondary combustion chamber. The methane chloride residue added to the rotary kiln is heated by the continuous rotation of the kiln. During the continuous rotation and tumbling process, the methane chloride residue is agitated, which greatly improves the heat transfer efficiency. This causes the methane chloride residue to evaporate and decompose into small-molecule combustible gases and carbon slag, which are then transported to the secondary combustion chamber for secondary combustion and complete combustion of unburned gaseous pollutants, ensuring that they are completely destroyed at high temperatures.

[0018] This invention connects an air supply duct to the beginning of the rotary kiln via a blower, accelerating the delivery of combustible gas from the evaporation and cracking of methane chloride residue to the secondary combustion chamber. An air duct is connected to the bottom of the secondary combustion chamber, and an air fan evenly distributes oxygen from the air into the chamber, improving the combustion efficiency of the combustible gas within the secondary combustion chamber. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a multi-component collaborative device for an incineration system according to the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the secondary combustion chamber of a multi-component collaborative device for an incineration system according to the present invention;

[0021] Figure 3 for Figure 2 Enlarged view of the connection relationship between the residual liquid pipe, branch pipe and rotary kiln;

[0022] Figure 4 This is a schematic diagram showing the connection relationship between the rotary kiln and the connecting flue of a multi-component collaborative device for an incineration system according to this utility model.

[0023] Figure 5 This is a schematic diagram of the internal structure of the rotary kiln and connecting flue of a multi-component collaborative device for an incineration system according to this utility model.

[0024] Figure 6 This is a top view of the combustion ring structure of a multi-component collaborative device for an incineration system according to the present invention;

[0025] Figure 7 This is a side view of the connection relationship between the branch pipe reducing diameter bend and the residual liquid reducing diameter bend in a multi-component collaborative device of an incineration system according to this utility model.

[0026] Explanation of key figure labels:

[0027] 1-Rotary kiln, 2-Secondary combustion chamber, 3-Connecting flue, 4-Fan, 5-Variable frequency motor, 6-Residual liquid pipe, 7-Clamp, 8-Auxiliary burner, 11-Transmission gear, 12-Refractory material, 13-Sealed bearing, 21-Combustion ring, 22-Filter plate, 23-Wind coil, 31-Fish scale contact sealing ring, 32-Through hole, 33-First condenser pipe, 41-Output air duct, 42-T-connector pipe, 44-Control valve, 45-Branch pipe, 46-Branch pipe reducing bend, 51-Drive gear, 61-Residual liquid reducing bend, 81-Fuel extension nozzle, 211-Flame nozzle, 231-Vertical air outlet. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figures 1-7As shown, this utility model discloses a multi-component collaborative device for an incineration system, including a rotary kiln 1 and a secondary combustion chamber 2, and a connecting flue 3 connecting the two. The connecting flue 3 is connected to the middle of the secondary combustion chamber 2. The rotary kiln 1 is cylindrical and extends into the connecting flue 3 at an incline. The connecting flue 3 is a short and robust connecting channel, which is the only channel for gaseous pyrolysis products, flue gas, and possibly entrained fine droplets and dust to enter the secondary combustion chamber. The inclination angle of the rotary kiln 1 is 2°~5°. When the rotary kiln 1 rotates, the material inside is continuously lifted and then slid down under the action of gravity. However, because the kiln body is inclined, the position of each slide is closer to the discharge end than the previous one, thereby achieving the slow advancement of the material. An auxiliary burner 8 is fitted around the outer side of the connecting flue 3. Multiple fuel extension nozzles 81 are evenly connected to the inner ring of the auxiliary burner 8 and extend into the interior of the end of the rotary kiln 1. The inner wall of the rotary kiln 1 is coated with refractory material 12. A combustion ring 21 is located inside the middle section of the secondary combustion chamber 2, and multiple flame nozzles 211 are evenly arranged on the inner ring of the combustion ring 21. A filter plate 22 is located at the bottom of the secondary combustion chamber 2, above the air fan 23. The filter plate 22 is made of a breathable material to filter dust and slag particles in the rotary kiln 1 without affecting the subsequent oxygen supply effect. The filter plate 22 can be designed to be detachable for easy periodic cleaning of residues, dust, and other filtered particles. The main function of the secondary combustion chamber 2 is secondary combustion or complete combustion, specifically responsible for handling unburned gaseous pollutants from the rotary kiln, ensuring their complete destruction at high temperatures. The auxiliary burner 8 and the connected multiple fuel extension nozzles 81 primarily heat the rotary kiln 1, exposing the residual methane chloride liquid inside directly to the high-temperature inner wall of the rotary kiln 1, greatly improving heat transfer efficiency. A transmission gear 11 is fixedly connected to the beginning of the rotary kiln 1, and a variable frequency motor 5 is located below the beginning of the rotary kiln 1. The rotational output end of the variable frequency motor 5 is fixedly connected to a drive gear 51 that meshes with the transmission gear 11. The variable frequency motor 5 drives the drive gear 51, which in turn drives the transmission gear 11 and the rotary kiln 1 as a whole to rotate, thus realizing the rotation of the rotary kiln 1 and the agitation of the residual methane chloride liquid inside. A residual liquid pipe 6 is provided at the beginning of the rotary kiln 1 and extends into the rotary kiln 1. A fish-scale contact sealing ring 31 is fitted at the end of the rotary kiln 1, and the fish-scale contact sealing ring 31 is fixedly connected to the connecting flue. The fish-scale contact sealing ring 31 is a flexible seal. The fish-scales, relying on their own elasticity or through a counterweight lever system, gently adhere to the outer circumferential surface of the rotating kiln head sleeve with a constant pressure. The fish-scale contact sealing ring 31 minimizes the leakage of external cold air into the rotary kiln 1, while preventing the leakage of harmful gases and dust from the rotary kiln 1. When the rotary kiln 1 rotates, there is sliding friction contact between the fish-scales and the sleeve.It features good sealing performance, adapts well to the movement stroke of rotary kiln 1, and effectively prevents gas and dust leakage. In this embodiment, the support and bracket mechanism of rotary kiln 1 can be freely modified to ensure that the support mechanism has support rollers. The support rollers themselves can rotate, and through friction with the tire, the rotary kiln 1 rotates smoothly on them. The specific shape of the support mechanism will not be described in detail. Rotary kiln 1 should be "long and slender". Its internal refractory material 12 can withstand an internal working temperature of over 1100°C and resist corrosion from acidic gases such as hydrogen chloride produced by the combustion of methane chloride residue. This ensures that the material has sufficient residence time in rotary kiln 1 to ensure that the residue can be fully evaporated and pyrolyzed.

[0030] In the front middle section of rotary kiln 1, after the residual liquid is heated, most of the volatile components evaporate directly into steam. Simultaneously, some large organic molecules undergo chemical bond breakage (cracking) at high temperatures, generating small-molecule combustible pyrolysis gases such as CO, H2, CH4, and various low-molecular-weight hydrocarbons. These high-temperature gaseous substances, propelled by the negative pressure generated by the fan at the tail end of the rotary kiln or by the system's own pressure, naturally enter the lower part of the secondary combustion chamber through the aforementioned connecting flue. Inside the secondary combustion chamber, excess air (typically with an excess air coefficient >1.5) is drawn in through specially designed secondary air nozzles, resulting in a vigorous and thorough mixing with these combustible gases. Under the "three-T conditions" of a maintained high-temperature environment (typically ≥1100°C) and a sufficiently long residence time (typically ≥2 seconds), these combustible gases undergo complete oxidation (combustion), generating harmless substances such as CO2 and H2O.

[0031] It should be further explained that the system also includes a blower 4 and an output duct 41 connected to one side of the blower 4. The output duct 41 is connected to the bottom of the secondary combustion chamber 2. A fan plate 23 is provided at the bottom of the secondary combustion chamber 2, which is connected to the output duct 41. Multiple vertical air inlets 231 are evenly distributed on the top of the fan plate 23. The main function of the fan plate 23 and the multiple vertical air inlets 231 on the top is to supplement oxygen through the blower 4, thereby intensifying the complete combustion of combustible gases in the secondary combustion chamber 2. A three-way pipe 42 is provided on the output duct 41, which connects to a branch pipe 45. The end of the branch pipe 45 is provided with a branch pipe reducing bend 46, which extends into the beginning of the rotary kiln 1. The end of the residual liquid pipe 6 is provided with a residual liquid reducing bend 61, which extends into the beginning of the rotary kiln 1. The cross-sections of the branch pipe reducing bend 46 and the residual liquid reducing bend 61 are both semi-circular and symmetrical. The branch pipe reducing bend 46 and the residual liquid reducing bend 61 are fitted with clamps 7 on their outer sides and overlap to form a circular pipe. The rotary kiln 1 is equipped with a sealing bearing 13 at its starting end. The inner ring of the sealing bearing 13 is fixedly connected to the branch pipe reducing bend 46 and the residual liquid reducing bend 61. The branch pipe 45 is equipped with a control valve 44. The branch pipe reducing bend 46 and the residual liquid reducing bend 61 are designed as symmetrically distributed semi-circular pipes, which are fixed by clamps 7 to form a complete circular pipe. After being fixedly connected to the inner ring of the sealing bearing 13, it ensures that the starting end of the rotary kiln 1 also has good sealing performance, avoiding heat loss inside the rotary kiln 1 and the escape of gasified toxic substances inside, which would cause greater pollution.

[0032] In practical use, in the front and middle section of rotary kiln 1, after the residual liquid is heated, most of the volatile components evaporate directly into steam. Simultaneously, some large organic molecules undergo chemical bond breakage (cracking) at high temperatures, generating small-molecule combustible pyrolysis gases such as CO, H2, CH4, and various low-molecular-weight hydrocarbons. These high-temperature gaseous substances, propelled by the air pressure created by the combined action of branch pipe 45 and control valve 44, naturally enter the interior of the secondary combustion chamber through the connecting flue 3. Inside the secondary combustion chamber 2, more oxygen is delivered through the fan 23 and multiple vertical air vents 231 at the top, resulting in a vigorous and thorough mixing with these combustible gases. Under the high-temperature environment (typically ≥1100°C) and sufficiently long residence time (typically ≥2 seconds) maintained in the secondary combustion chamber 2, these combustible gases undergo complete oxidation (combustion), generating harmless substances such as CO2 and H2O.

[0033] This invention utilizes the coordinated operation of a rotary kiln and a secondary combustion chamber. The methane chloride residue added to the rotary kiln is heated by the continuous rotation of the kiln. The constant rotation and tumbling of the residue greatly improves heat transfer efficiency, causing it to evaporate and decompose into small-molecule combustible gases and carbon residue. This residue is then transported to the secondary combustion chamber for secondary and complete combustion of any unburned gaseous pollutants, ensuring their complete destruction at high temperatures. A blower connects an air duct to the beginning of the rotary kiln, accelerating the delivery of the combustible gases from the evaporated and decomposed methane chloride residue to the secondary combustion chamber. An air duct connects to the bottom of the secondary combustion chamber, and a fan coil unit evenly distributes oxygen from the air into the chamber, improving the combustion efficiency of the combustible gases within. A system for the co-incineration of methane chloride residues was developed, which solved the technical problem of secondary pollution caused by the incomplete incineration of methane chloride residues due to gravity when they were treated by incineration. This created a stable, high-temperature reaction environment for the smooth feeding and complete pyrolysis of hazardous waste.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-component collaborative device for an incineration system, characterized in that: It includes a rotary kiln (1) and a secondary combustion chamber (2), and a connecting flue (3) connecting the two. The connecting flue (3) is connected to the middle of the secondary combustion chamber (2). The rotary kiln (1) is cylindrical and extends into the connecting flue (3) at an angle. An auxiliary burner (8) is fitted on the outer side of the connecting flue (3). The inner ring of the auxiliary burner (8) is evenly connected with multiple fuel extension nozzles (81) and extends into the interior of the end of the rotary kiln (1). The inner wall of the rotary kiln (1) is coated with refractory material (12). A combustion ring (21) is provided in the middle section of the secondary combustion chamber (2). The inner ring of the combustion ring (21) is evenly provided with multiple flame nozzles (211). A transmission gear (11) is fixedly connected to the beginning of the rotary kiln (1), and a variable frequency motor (5) is provided below the beginning of the rotary kiln (1). A drive gear (51) that meshes with the transmission gear (11) is fixedly connected to the rotation output end of the variable frequency motor (5). The rotary kiln (1) is provided with a residual liquid pipe (6) at the beginning and extends into the rotary kiln (1). The rotary kiln (1) is provided with a fish scale contact sealing ring (31) at the end and the fish scale contact sealing ring (31) is fixedly connected to the connecting flue.

2. The multi-component collaborative device for an incineration system according to claim 1, characterized in that: It also includes a fan (4) and an output duct (41) connected to one side of the fan (4), the output duct (41) being connected to the bottom of the secondary combustion chamber (2).

3. The multi-component collaborative device for an incineration system according to claim 2, characterized in that: The bottom of the secondary combustion chamber (2) is provided with a fan plate (23), which is connected to the output air pipe (41), and the top of the fan plate (23) is provided with multiple vertical air outlets (231).

4. The multi-component collaborative device for an incineration system according to claim 3, characterized in that: The output air duct (41) is provided with a three-way pipe (42) and connected to a branch pipe (45). The end of the branch pipe (45) is provided with a branch pipe reducing bend pipe (46) and extends into the beginning of the rotary kiln (1).

5. The multi-component collaborative device for an incineration system according to claim 4, characterized in that: The end of the residual liquid pipe (6) is provided with a residual liquid variable diameter bend pipe (61) and extends into the beginning of the rotary kiln (1). The cross-sections of the branch pipe variable diameter bend pipe (46) and the residual liquid variable diameter bend pipe (61) are both semi-circular and symmetrical to each other.

6. The multi-component collaborative device for an incineration system according to claim 5, characterized in that: The outer sides of the branch pipe reducing bend (46) and the residual liquid reducing bend (61) are fitted with clamps (7) and overlap to form a round pipe.

7. The multi-component collaborative device for an incineration system according to claim 6, characterized in that: The rotary kiln (1) is provided with a sealed bearing (13) at the beginning. The inner ring of the sealed bearing (13) is fixedly connected to the branch pipe diameter-changing bend pipe (46) and the residual liquid diameter-changing bend pipe (61). The branch pipe (45) is provided with a control valve (44).

8. The multi-component collaborative device for an incineration system according to claim 1, characterized in that: The tilt angle of the rotary kiln (1) is 2°~5°.

9. The multi-component collaborative device for an incineration system according to claim 3, characterized in that: The bottom of the secondary combustion chamber (2) is provided with a filter plate (22), which is located above the fan plate (23).

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