Circulating fluidized bed garbage sludge incinerator

Abstract

The utility model relates to the field of environmental protection technology discloses a kind of circulating fluidized bed garbage sludge incinerator, including furnace body, the bottom side wall of furnace body is fixedly installed with feed pipe, the bottom end of furnace body is provided with discharge port, the top side wall of furnace body is fixedly installed with exhaust pipe, the outer wall of exhaust pipe is equipped with heat exchange bin, the inside of exhaust pipe is provided with guide component. By being provided with guide component, cooperation drainage plate and the middle guide of the plurality of baffle of its bottom setting in exhaust pipe, prevent adherent impurity four-scattered influence to the ventilation of entire exhaust pipe, simultaneously promote drainage plate and produce clockwise deflection after adhering more impurities, reduce the through area of exhaust pipe air outlet, so that the local area airflow velocity in exhaust pipe is greater, to reduce the adhesion rate of impurity in exhaust pipe, to further reduce the jam probability of exhaust pipe, guarantee the normal operation of device.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection technology, specifically a circulating fluidized bed waste sludge incinerator. Background Technology

[0002] Municipal solid waste incineration has advantages such as small footprint, fast processing, significant volume reduction, thorough harmlessness, and recyclable waste heat, and has been increasingly widely used. However, the composition of waste is complex and diverse, with high water content, which makes it easy for ash to accumulate on the heated surfaces during incineration.

[0003] According to a public notice regarding a circulating fluidized bed waste sludge incinerator (Notice No.: CN103884015B), in the aforementioned application, waste sludge material enters the fluidized bed boiler under the propulsion of a countercurrent drying and pyrolysis feeder, and is countercurrently dried and pyrolyzed under the action of a reflux dehydration secondary air device; the inlet of the primary air fan is connected to an insulated air preheater through a high-temperature flue, and the air enters the high-temperature air box after being heated; the automatic burner is turned on during ignition and startup, and the auxiliary feeding device is adjusted when combustion is difficult; the combustion furnace first exchanges heat through the fluidized bed boiler and then exchanges heat with the horizontal superheater, horizontal economizer, and insulated air preheater in the high-temperature flue.

[0004] However, in actual use, the impurities contained in the exhaust gas of the above-mentioned equipment will be scattered in the exhaust channel with the movement of the airflow. Moreover, the exhaust channel is relatively sealed when it is installed, making it difficult for the impurities to be effectively discharged. The scattered and sticky substances can easily block the exhaust channel, affecting the normal operation of the entire incinerator. In view of this, we propose a circulating fluidized bed waste sludge incinerator. Utility Model Content

[0005] The purpose of this invention is to provide a circulating fluidized bed waste sludge incinerator to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a circulating fluidized bed waste sludge incinerator, comprising a furnace body, a feed pipe fixedly installed on the bottom side wall of the furnace body, a slag discharge port opened at the bottom end of the furnace body, an exhaust pipe fixedly installed on the top side wall of the furnace body, a heat exchange chamber sleeved on the outer wall of the exhaust pipe, an air inlet pipe fixedly installed on the inner wall of the heat exchange chamber, a blower fixedly connected to the bottom end of the air inlet pipe, an air blowing pipe fixedly installed on the bottom outer wall of the furnace body, the end of the air blowing pipe fixedly connected to the output end of the blower, and a guide component provided inside the exhaust pipe;

[0007] The guiding component includes a rotating rod, which is rotatably mounted on the inner walls of the front and rear sides of the exhaust pipe. A flow guide plate is fixedly installed through the outer wall of the rotating rod. A coil spring is sleeved on the outer wall of the end of the rotating rod. A telescopic block is fixedly connected between the lower surface of the flow guide plate near the rotating rod and the top inner wall of the exhaust pipe. A baffle is fixedly installed on the lower surface of the flow guide plate. A V-shaped groove is formed on the outer wall of the baffle near the furnace body.

[0008] Preferably, the air intake pipe is arranged in a spiral shape inside the heat exchange chamber, and the end of the air intake pipe away from the fan extends out of the heat exchange chamber.

[0009] Preferably, the inner walls of the front and rear sides of the top of the exhaust pipe are provided with circular holes with a diameter larger than the outer diameter of the coil spring, and the two ends of the coil spring are respectively fixedly connected to the arc-shaped outer wall of the rotating rod and the arc-shaped inner wall of the circular hole.

[0010] Preferably, the diversion plate includes an inclined plate near the rotating rod and a flat plate fixedly installed at the end of the inclined plate. The flat plate is near the end of the exhaust pipe away from the furnace body. The up-and-down swing of the diversion plate can change the local airflow area in the exhaust pipe.

[0011] Preferably, the number of baffles is provided in multiple sets, and the multiple sets of baffles are evenly distributed in a linear array on the lower surface of the inclined plate of the flow guide plate. The baffles are inclined with their bottom ends away from the furnace body, so that they can block some of the lighter impurities in the exhaust gas without causing excessive interference to the airflow.

[0012] Preferably, the exhaust pipe is provided with a collecting component inside, the collecting component includes a collecting groove, the collecting groove is opened on the bottom inner surface of the exhaust pipe, and guide belts are fixedly installed on the inner walls of the front and rear sides of the exhaust pipe.

[0013] Preferably, the collection trough is V-shaped, and the cross-sectional area of ​​the collection trough gradually increases from left to right inside the exhaust pipe, so as to improve the collection effect of adhesive impurities in the central area at the bottom of the exhaust pipe.

[0014] Compared with the prior art, this utility model provides a circulating fluidized bed waste sludge incinerator, which has the following beneficial effects:

[0015] 1. This circulating fluidized bed waste sludge incinerator is equipped with a guiding component, which, together with a flow guide plate and multiple sets of baffles at its bottom, guides impurities in the exhaust pipe to a central position, preventing adhering impurities from scattering and affecting the ventilation of the entire exhaust pipe. At the same time, it causes the flow guide plate to deflect clockwise after adhering to a large amount of impurities, reducing the passage area at the exhaust pipe outlet and increasing the airflow velocity in local areas of the exhaust pipe. This reduces the adhesion rate of impurities inside the exhaust pipe, thereby reducing the probability of blockage and ensuring the normal operation of the device.

[0016] 2. This circulating fluidized bed waste sludge incinerator is equipped with a collection component. The semi-cylindrical guide belt on both sides of the exhaust pipe reduces the adhesion of impurities that flow with the exhaust gas, making it easier for them to fall and be collected in the collection tank for timely discharge. This avoids the residue of impurities in the exhaust pipe, which would affect the continuous permeability of the exhaust pipe and thus improve the continuous operation time of the furnace for incinerating waste. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the furnace body of this utility model;

[0019] Figure 3 This is a partial cross-sectional view of the exhaust pipe of this utility model;

[0020] Figure 4 This is a cross-sectional view of the exhaust pipe of this utility model;

[0021] Figure 5 This is a bottom view of the drainage plate of this utility model.

[0022] In the diagram: 1. Furnace body; 2. Feed pipe; 3. Slag discharge port; 4. Exhaust pipe; 5. Heat exchange chamber; 6. Air inlet pipe; 7. Fan; 8. Air blowing pipe; 9. Guiding assembly; 91. Rotating rod; 92. Flow guide plate; 93. Coil spring; 94. Telescopic stop block; 95. Baffle; 96. V-groove; 10. Gathering assembly; 101. Collection tank; 102. Guide belt. Detailed Implementation

[0023] like Figures 1-5 As shown, this utility model provides a technical solution: a circulating fluidized bed waste sludge incinerator, including a furnace body 1, a feed pipe 2 fixedly installed on the bottom side wall of the furnace body 1, a slag discharge port 3 opened at the bottom end of the furnace body 1, an exhaust pipe 4 fixedly installed on the top side wall of the furnace body 1, a heat exchange chamber 5 sleeved on the outer wall of the exhaust pipe 4, an air inlet pipe 6 fixedly installed on the inner wall of the heat exchange chamber 5, a blower 7 fixedly connected to the bottom end of the air inlet pipe 6, an air blowing pipe 8 fixedly installed on the bottom outer wall of the furnace body 1, the end of the air blowing pipe 8 fixedly connected to the output end of the blower 7, and a guide assembly 9 provided inside the exhaust pipe 4, the guide assembly 9 including a rotating rod 91, a diversion plate 92, a coil spring 93, a telescopic block 94, a baffle 95, and a V-groove 96.

[0024] In one embodiment of this utility model, the rotating rod 91 is rotatably installed on the inner walls of the front and rear sides of the exhaust pipe 4. The outer wall of the rotating rod 91 is penetrated and fixedly installed with a flow guide plate 92. A coil spring 93 is sleeved on the outer wall of the end of the rotating rod 91. A telescopic stop block 94 is fixedly connected between the lower surface of the flow guide plate 92 near the rotating rod 91 and the top inner wall of the exhaust pipe 4. A baffle 95 is fixedly installed on the lower surface of the flow guide plate 92. A V-shaped groove 96 is opened on the outer wall of the baffle 95 near the furnace body 1.

[0025] Furthermore, the top of the feed pipe 2 is connected to an external enclosed feeding device, thereby guiding the waste to be incinerated into the furnace body 1 from the feed pipe 2. An igniter is installed on the bottom inner wall of the furnace body 1 to achieve the effect of ignition and incineration. At the same time, the air intake pipe 6 is arranged in a spiral shape inside the heat exchange chamber 5, and the end of the air intake pipe 6 away from the blower 7 extends out of the heat exchange chamber 5. When the blower 7 is working, the outside air enters the air intake pipe 6 and first passes through the area of ​​the heat exchange chamber 5. The exhaust gas discharged from the exhaust pipe 4 contains a large amount of heat, which is exchanged with the air in the air intake pipe 6 through the heat exchange chamber 5 to achieve the effect of preheating. Then the blower 7 blows the preheated air into the interior of the furnace body 1 through the air blowing pipe 8 to achieve the effect of oxygen supply and continuous incineration.

[0026] Meanwhile, the inner walls of the front and rear sides of the top of the exhaust pipe 4 are provided with circular holes with a diameter larger than the outer diameter of the coil spring 93. The two ends of the coil spring 93 are fixedly connected to the arc-shaped outer wall of the rotating rod 91 and the arc-shaped inner wall of the circular hole, respectively. In the initial state, under the influence of the elastic force of the coil spring 93, the guide plate 92 is inclined at the end away from the rotating rod 91. The coil spring 93 is in a taut state and has a tendency to contract. Furthermore, the guide plate 92 includes an inclined plate near the rotating rod 91 and a flat plate fixedly installed at the end of the inclined plate. The flat plate is near the end of the exhaust pipe 4 away from the furnace body 1. By swinging the guide plate 92 up and down, the local airflow passage area in the exhaust pipe 4 can be changed. When the passage area is small, the airflow speed is increased, so that the adhering impurities in the air in the exhaust pipe 4 can be drawn out, avoiding excessive adhering of impurities in local positions and affecting the normal ventilation effect of the exhaust pipe 4.

[0027] Specifically, multiple sets of baffles 95 are arranged in a linear array and evenly distributed on the lower surface of the inclined plate of the guide plate 92. The baffles 95 are inclined with their bottom ends away from the furnace body 1. This allows them to block some lighter impurities in the exhaust gas without causing excessive interference to the airflow and affecting the normal exhaust effect of the device. Furthermore, the V-shaped groove 96 faces the direction of the exhaust gas. On the one hand, it can guide the impurities in the exhaust pipe 4 in a central position, preventing the adhesive impurities from spreading and affecting the ventilation of the entire exhaust pipe 4. On the other hand, it can also cause the guide plate 92 to deflect clockwise after adhering to a large amount of impurities, reducing the passage area at the exhaust pipe 4 outlet and making the airflow velocity in the local area of ​​the exhaust pipe 4 greater. This reduces the adhesion rate of impurities inside the exhaust pipe 4, thereby reducing the probability of blockage of the exhaust pipe 4 and ensuring the normal operation of the device.

[0028] In addition, the exhaust pipe 4 is provided with a collecting component 10, which includes a collecting groove 101. The collecting groove 101 is opened on the bottom inner surface of the exhaust pipe 4, and guide belts 102 are fixedly installed on the inner walls of the front and rear sides of the exhaust pipe 4.

[0029] In this embodiment of the present invention, the collection trough 101 is V-shaped, and the cross-sectional area of ​​the collection trough 101 gradually increases from left to right within the exhaust pipe 4 to improve the collection effect of adhesive impurities in the central area at the bottom of the exhaust pipe 4. At the same time, the guide belt 102 is semi-cylindrical to reduce the adhesion of impurities that flow with the exhaust gas, making them easier to fall and collect in the collection trough 101 for timely discharge, avoiding the residue of impurities in the exhaust pipe 4, which would affect the continuous permeability of the exhaust pipe 4, thereby increasing the continuous operating time of the furnace 1 for incinerating waste.

[0030] In this invention, the waste to be processed is fed into the furnace body 1 through the feed pipe 2, and then the waste is fully burned in the furnace body 1 by an igniter. The exhaust gas after combustion, along with impurities, is discharged outward through the exhaust pipe 4. During this process, the impurities in the exhaust pipe 4 are guided in a centered manner by the guide component 9, the guide plate 92, and multiple sets of baffles 95 at its bottom, preventing the adhering impurities from scattering and affecting the ventilation of the entire exhaust pipe 4. At the same time, the guide plate 92 will deflect clockwise after adhering to a large amount of impurities, reducing the passage area at the exhaust pipe 4 outlet, making the airflow velocity in the local area of ​​the exhaust pipe 4 greater, thereby reducing the adhesion rate of impurities inside the exhaust pipe 4, thus reducing the probability of blockage of the exhaust pipe 4 and ensuring the normal operation of the device.

[0031] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A circulating fluidized bed waste sludge incinerator, comprising a furnace body (1), wherein a feed pipe (2) is fixedly installed on the bottom side wall of the furnace body (1), a slag discharge port (3) is opened at the bottom end of the furnace body (1), an exhaust pipe (4) is fixedly installed on the top side wall of the furnace body (1), a heat exchange chamber (5) is sleeved on the outer wall of the exhaust pipe (4), an air inlet pipe (6) is fixedly installed on the inner wall of the heat exchange chamber (5), a blower (7) is fixedly connected to the bottom end of the air inlet pipe (6), and an air blowing pipe (8) is fixedly installed on the bottom outer wall of the furnace body (1), the end of the air blowing pipe (8) is fixedly connected to the output end of the blower (7), characterized in that: The exhaust pipe (4) is provided with a guide component (9); The guide assembly (9) includes a rotating rod (91), which is rotatably mounted on the inner walls of the front and rear sides of the exhaust pipe (4). A diversion plate (92) is fixedly installed through the outer wall of the rotating rod (91). A coil spring (93) is sleeved on the outer wall of the end of the rotating rod (91). A telescopic block (94) is fixedly connected between the lower surface of the diversion plate (92) near the rotating rod (91) and the top inner wall of the exhaust pipe (4). A baffle (95) is fixedly installed on the lower surface of the diversion plate (92). A V-shaped groove (96) is opened on the outer wall of the baffle (95) near the furnace body (1).

2. The circulating fluidized bed waste sludge incinerator according to claim 1, characterized in that: The air intake pipe (6) is spirally arranged inside the heat exchange chamber (5), and the end of the air intake pipe (6) away from the fan (7) extends out of the heat exchange chamber (5).

3. A circulating fluidized bed waste sludge incinerator according to claim 1, characterized in that: The exhaust pipe (4) has circular holes with a diameter larger than the outer diameter of the coil spring (93) on the inner walls of the front and rear sides. The two ends of the coil spring (93) are fixedly connected to the arc-shaped outer wall of the rotating rod (91) and the arc-shaped inner wall of the circular hole, respectively.

4. A circulating fluidized bed waste sludge incinerator according to claim 1, characterized in that: The diversion plate (92) includes an inclined plate near the rotating rod (91) and a flat plate fixedly installed at the end of the inclined plate, with the flat plate near the end of the exhaust pipe (4) away from the furnace body (1).

5. A circulating fluidized bed waste sludge incinerator according to claim 1, characterized in that: The number of baffles (95) is set in multiple sets. The multiple sets of baffles (95) are evenly distributed in a linear array on the lower surface of the inclined plate of the diversion plate (92), and the baffles (95) are set in an inclined shape with the bottom end away from the furnace body (1).

6. A circulating fluidized bed waste sludge incinerator according to claim 1, characterized in that: The exhaust pipe (4) is provided with a gathering component (10), which includes a collection groove (101) and is opened on the bottom inner surface of the exhaust pipe (4). Guide belts (102) are fixedly installed on the inner walls of the front and rear sides of the exhaust pipe (4).

7. A circulating fluidized bed waste sludge incinerator according to claim 6, characterized in that: The collection trough (101) is V-shaped, and the cross-sectional area of ​​the collection trough (101) gradually increases from left to right within the exhaust pipe (4).

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