Circulating fluidized bed incinerator for incinerating sludge

Abstract

The utility model relates to the technical field of sludge incinerators, and discloses a circulating fluidized bed incinerator for incinerating sludge, which comprises an incinerator main body, an igniter is mounted on the front side of the incinerator main body, a pretreatment assembly is arranged on the rear side of the incinerator main body, and the pretreatment assembly comprises a treatment box arranged on the rear side of the incinerator main body. And an extrusion cylinder is fixed to the top face of the treatment box in a penetrating mode, a pressing plate is slidably arranged in the extrusion cylinder, the bottom face of the extrusion cylinder abuts against a separation base, and a filtering plate is fixed to the top face of the separation base. According to the sludge incineration device, sewage is firstly extruded and removed, the water content of residual sludge is greatly reduced, the incineration process can be more efficient, dry sludge is easier to burn and high in heat value, and extra energy consumption is reduced; high-temperature flue gas generated in the incineration process can be effectively utilized to evaporate moisture, the moisture is prevented from taking away a large amount of heat in the incineration process, and the overall sludge combustion efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sludge incinerator technical field especially relates to a kind of circulating fluidized bed incinerator for incinerating sludge. BACKGROUND

[0002] When sewage is treated, a large amount of sludge will accumulate at the bottom of the treatment equipment, which contains a large amount of organic matter and elements such as nitrogen and phosphorus. If it is directly discharged into the natural environment, it will pollute the environment, so it is necessary to dispose of these sludge to reduce environmental pollution. The current sludge disposal method is mainly to use an incinerator to incinerate and dispose of the sludge. This disposal method is efficient and will not have any residue.

[0003] The existing circulating fluidized bed incinerator for incinerating sludge (publication number: CN217274150U) has at least the following disadvantages: the device uses a crushing roller to crush the sludge, and the crushed sludge passes through a sieve plate into the incineration chamber for incineration. At the same time, the sludge is dried during crushing. However, since the sludge needs to be extruded during crushing, the water in the sludge will be squeezed out in advance and pass through the sieve plate into the incineration chamber with the sludge, causing the water evaporation during incineration to take away a large amount of heat, thereby affecting the incineration efficiency of the sludge. Therefore, the present utility model is proposed. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides a circulating fluidized bed incinerator for incinerating sludge.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] A circulating fluidized bed incinerator for incinerating sludge, comprising an incinerator main body, a lighter mounted on the front side of the incinerator main body, a gas inlet pipe and an air supply pipe fixed respectively on the left side of the outer wall of the incinerator main body, a slag discharge pipe fixed to the bottom surface of the incinerator main body, a slag discharge valve fixed to the bottom surface of the slag discharge pipe, a smoke exhaust pipe fixed to the top surface of the incinerator main body, a pretreatment assembly arranged on the rear side of the incinerator main body, the pretreatment assembly comprising a treatment box arranged on the rear side of the incinerator main body, an extrusion cylinder fixed through the top surface of the treatment box, a pressure plate slidably arranged in the extrusion cylinder, a separation seat abutting the bottom surface of the extrusion cylinder, a filter plate fixed to the top surface of the separation seat, and an evaporation disc arranged in the incinerator main body.

[0007] As a further scheme of the present utility model, the top surface of the processing box is fixed with a support, the top surface of the support is fixed with a first hydraulic rod, the telescopic rod end of the first hydraulic rod extends through to the bottom surface of the support and is fixed with the top surface of the pressing plate, the left side of the processing box is fixed with a second hydraulic rod, the telescopic rod of the second hydraulic rod extends through to the inside of the processing box and is fixed with the left side of the separation seat, the left side of the processing box is fixed with a water pump, one end of the water pump water suction pipe extends through to the inside of the processing box and is fixed in communication with the left side of the separation seat, one end of the water pump water delivery pipe extends through to the inside of the incinerator main body and is located above the evaporation disc, the water pump water delivery pipe inside the incinerator main body is a high-temperature-resistant heat insulation sleeve.

[0008] As a further scheme of the present utility model, the rear side of the extrusion cylinder is fixed in communication with a first alligator conveyer, the bottom surface of the processing box is fixed in communication with a second alligator conveyer, the discharge end of the second alligator conveyer is fixed in communication with the outer wall of the incinerator main body.

[0009] As a further scheme of the present utility model, the inside of the processing box and below the separation seat are rotatably connected with two crushing rollers, the front end of the two crushing rollers are fixed with gears, the two gears are in meshing engagement, the rear side of the processing box is fixed with a first motor, the output shaft of the first motor is fixed with the rear end of the corresponding crushing roller.

[0010] As a further scheme of the present utility model, the outer wall of the incinerator main body is fixed with a second motor, the output shaft of the second motor is fixed with the front side of the evaporation disc.

[0011] As a further scheme of the present utility model, the top surface of the support is slidably provided with a limiting rod, the limiting rod is fixed with the top surface of the pressing plate, the inside of the processing box is fixed with support strips on the front and rear sides, the separation seat is slidably provided with the outer wall of the support strip.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] Through setting the extrusion cylinder and the pressing plate to extrude the sludge, the water in the sludge is extruded out and collected into the inside of the separation seat, then the extruded dry and clumped sludge and the sewage are respectively input to the incinerator main body and the evaporation disc for burning and evaporation treatment, by first extruding to remove the sewage, the remaining sludge greatly reduces the water content, the burning process can be more efficient, the drier sludge is easier to burn, the heat value is high, the additional energy consumption is reduced, and the extruded sewage is guided into the evaporation disc above the incineration cavity, which can effectively utilize the high-temperature flue gas generated in the incineration process to evaporate the water, avoiding that the water takes away a large amount of heat in the incineration process, and increasing the overall sludge burning efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1The utility model provides a kind of three-dimensional structure schematic diagram of circulating fluidized bed incinerator for incineration sludge is proposed in the utility model;

[0015] Figure 2 The utility model provides a kind of three-dimensional sectional structure schematic diagram of processing box of circulating fluidized bed incinerator for incineration sludge is proposed in the utility model;

[0016] Figure 3 The utility model provides a kind of three-dimensional structure schematic diagram of separation seat of circulating fluidized bed incinerator for incineration sludge is proposed in the utility model;

[0017] Figure 4 The utility model provides a kind of three-dimensional sectional structure schematic diagram of incinerator main body of circulating fluidized bed incinerator for incineration sludge is proposed in the utility model.

[0018] In the drawing: 1, incinerator main body;101, igniter;2, processing box;201, extrusion cylinder;202, pressing plate;203, separation seat;204, filter plate;205, evaporation tray;206, support;3, crushing roller;4, limiting rod;401, support strip. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0020] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "another end" and the like is the orientation or position relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as limiting the utility model that the indicated device or element must have a particular orientation, a particular orientation and operation, so it cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through intermediate medium;It can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0022] For example, Figures 1-4As shown, a circulating fluidized bed incinerator for sludge incineration includes an incinerator body 1. An igniter 101 is installed on the front side of the incinerator body 1. A gas input pipe and an air supply pipe are fixed on the left side of the outer wall of the incinerator body 1, respectively. A slag discharge pipe is fixedly connected to the bottom surface of the incinerator body 1, and a slag discharge valve is fixedly connected to the bottom surface of the slag discharge pipe. A flue gas pipe is fixedly connected to the top surface of the incinerator body 1. A pretreatment component is provided on the rear side of the incinerator body 1. The pretreatment component includes a treatment box 2 located on the rear side of the incinerator body 1. An extrusion cylinder 201 is fixedly connected through the top surface of the treatment box 2. A pressure plate 202 is slidably arranged inside the extrusion cylinder 201. A separation seat 203 is abutted on the bottom surface of the extrusion cylinder 201. A filter plate 204 is fixedly fixed on the top surface of the separation seat 203. An evaporation plate 205 is provided inside the incinerator body 1.

[0023] like Figures 2-4 As shown, in this embodiment, a bracket 206 is fixed to the top surface of the processing box 2, and a first hydraulic rod is fixed to the top surface of the bracket 206. The telescopic end of the first hydraulic rod extends through to the bottom surface of the bracket 206 and is fixed to the top surface of the pressure plate 202. A second hydraulic rod is fixed to the left side of the processing box 2. The telescopic end of the second hydraulic rod extends through to the interior of the processing box 2 and is fixed to the left side of the separation seat 203. A water pump is fixed to the left side of the processing box 2. One end of the water pump's suction pipe extends through to the interior of the processing box 2 and is connected and fixed to the left side of the separation seat 203. One end of the water pump's delivery pipe extends through to the interior of the incinerator body 1 and is located above the evaporation plate 205. The water pump's delivery pipe inside the incinerator body 1 is a high-temperature resistant heat-insulating sleeve. By activating the second hydraulic rod, the separation seat 203 is driven to abut against the bottom surface of the extrusion cylinder 201. Activating the first hydraulic rod drives the pressure plate 202 to move downward and extrude the sludge. The water in the sludge enters the separation seat 2 through the filter plate 204. Inside the 03 chamber, the water pump is activated to extract the wastewater from the separator 203 and input it to the top surface of the evaporation plate 205. Then, the squeezed sludge is transported to the incinerator body 1. Gas and air are input into the incinerator body 1 through the gas input pipe and air supply pipe, respectively. Then, the igniter 101 is activated to ignite the sludge blocks. The high-temperature flue gas generated during combustion passes through the gaps in the evaporation plate 205, causing the wastewater inside the evaporation plate 205 to evaporate. The water vapor is discharged from the exhaust pipe with the flue gas and transported to the tail gas treatment system for treatment. By first squeezing out the wastewater, the water content of the remaining sludge is greatly reduced, making the incineration process more efficient. The drier sludge is easier to burn, has a higher calorific value, and reduces additional energy consumption. Guiding the squeezed wastewater to the evaporation plate 205 above the incineration chamber can effectively utilize the high-temperature flue gas generated during incineration to evaporate the moisture, avoiding the moisture from taking away a large amount of heat during incineration and increasing the overall combustion efficiency of the sludge.

[0024] like Figures 2-4As shown, in this embodiment, the rear side of the extrusion cylinder 201 is fixedly connected with a first alligator conveyor, the bottom surface of the treatment box 2 is fixedly connected with a second alligator conveyor, the discharge end of the second alligator conveyor is fixedly connected with the outer wall of the incinerator main body 1, the first alligator conveyor is arranged to facilitate the input of the sludge to be incinerated into the interior of the extrusion cylinder 201 for extrusion treatment, and the second alligator conveyor is arranged to facilitate the conveying of the extruded sludge block to the interior of the incinerator main body 1 for incineration treatment.

[0025] As shown in the Figures 2-4 As shown, in this embodiment, the interior of the treatment box 2 and below the separation seat 203 are rotatably connected with two crushing rollers 3, the front ends of the two crushing rollers 3 are fixedly connected with gears, the two gears are meshed with each other, the rear side of the treatment box 2 is fixedly connected with a first motor, and the output shaft of the first motor is fixedly connected with the rear end of the corresponding crushing roller 3. The crushing roller 3 is arranged to crush the large sludge block after extrusion, increase the heating area of the sludge block, and increase the incineration efficiency of the sludge block.

[0026] As shown in the Figures 2-4 As shown, in this embodiment, the outer wall of the incinerator main body 1 is fixedly connected with a second motor, the output shaft of the second motor is fixedly connected with the front side of the evaporation disc 205, the second motor is started to drive the evaporation disc 205 to rotate after the incineration of the sludge is completed, so that the residues left in the evaporation disc 205 after evaporation of the sewage fall into the interior of the incinerator main body 1, and the residues in the interior of the evaporation disc 205 are discharged.

[0027] As shown in the Figures 2-4 As shown, in this embodiment, the top surface of the support 206 is slidably provided with a limiting rod 4, the limiting rod 4 is fixedly connected with the top surface of the pressing plate 202, the interior of the treatment box 2 is fixedly connected with support strips 401 on the front and rear sides, and the separation seat 203 is slidably provided with the outer wall of the support strips 401. The limiting rod 4 can limit the pressing plate 202, and the support strips 401 can support the separation seat 203.

[0028] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects: in use, the sludge is conveyed to the inside of the extrusion cylinder 201 through the first conveyor, then the second hydraulic rod is started to drive the separation seat 203 to abut against the bottom surface of the extrusion cylinder 201, the first hydraulic rod is started to drive the pressing plate 202 to move downwards and extrude the sludge, the water in the sludge enters the inside of the separation seat 203 through the filter plate 204, the water pump is started to extract the sewage in the inside of the separation seat 203 and input to the top surface of the evaporation disc 205, the first motor is started to drive the crushing roller 3 to rotate, the two crushing rollers 3 are fixed with gears at the front ends, the two gears mesh with each other, the two crushing rollers 3 rotate relatively, then the second hydraulic rod is started to drive the separation seat 203 to separate from the bottom surface of the extrusion cylinder 201, at this time, the sludge falls between the two crushing rollers 3 and is crushed, the crushed sludge blocks fall into the inside of the second conveyor and are conveyed to the incinerator main body 1, the gas input pipe and the air supply pipe input gas and air into the inside of the incinerator main body 1 respectively, then the igniter 101 is started to ignite and burn the sludge blocks, the high-temperature flue gas generated in the burning process passes through the gap of the evaporation disc 205, so that the sewage in the inside of the evaporation disc 205 is evaporated, the water vapor is discharged from the exhaust pipe along with the flue gas and is conveyed to the tail gas treatment system for treatment, by removing the sewage by extrusion first, the water content of the remaining sludge is greatly reduced, the burning process can be more efficient, the dry sludge is easier to burn, the calorific value is high, the additional energy consumption is reduced, and the extruded sewage is guided into the evaporation disc 205 above the incineration cavity, the high-temperature flue gas generated in the incineration process can be used to evaporate water, avoiding that the water takes away a lot of heat in the incineration process, increasing the overall burning efficiency of the sludge, after the incineration of the sludge is completed, the second motor is started to drive the evaporation disc 205 to rotate, so that the residues left in the evaporation disc 205 after the evaporation of the sewage fall into the inside of the incinerator main body 1, then the residue discharge valve is opened, and the residue is discharged from the residue discharge pipe.

[0029] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited to the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, under the premise of not departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A circulating fluidized bed incinerator for incinerating sludge, comprising an incinerator main body (1), characterized by, The front side of the incinerator body (1) is provided with a lighter (101), the left side of the outer wall of the incinerator body (1) is respectively fixed with a gas input pipe and an air supply pipe, the bottom surface of the incinerator body (1) is fixedly connected with a slag discharge pipe, the bottom surface of the slag discharge pipe is fixed with a slag discharge valve, the top surface of the incinerator body (1) is fixedly connected with a smoke exhaust pipe, and the rear side of the incinerator body (1) is provided with a pretreatment assembly.

2. A circulating fluidized bed incinerator for incinerating sludge according to claim 1, wherein The top surface of the treatment box (2) is fixedly connected with a support (206), the top surface of the support (206) is fixedly connected with a first hydraulic rod, the telescopic rod end of the first hydraulic rod extends through the bottom surface of the support (206) and is fixedly connected with the top surface of the pressing plate (202), the left side of the treatment box (2) is fixedly connected with a second hydraulic rod, the telescopic rod of the second hydraulic rod extends through the inside of the treatment box (2) and is fixedly connected with the left side of the separation seat (203), the left side of the treatment box (2) is fixedly connected with a water pump, one end of the water pump water suction pipe extends through the inside of the treatment box (2) and is fixedly connected with the left side of the separation seat (203), one end of the water pump water supply pipe extends through the inside of the incinerator body (1) and is located above the evaporation disc (205), and the water pump water supply pipe in the incinerator body (1) is a high-temperature-resistant heat-insulating sleeve.

3. A circulating fluidized bed incinerator for incinerating sludge according to claim 2, wherein The rear side of the extrusion cylinder (201) is fixedly connected with a first alligator conveyor, and the bottom surface of the treatment box (2) is fixedly connected with a second alligator conveyor.

4. A circulating fluidized bed incinerator for incinerating sludge according to claim 3, wherein The inside of the treatment box (2) and below the separation seat (203) are rotatably connected with two crushing rollers (3), the front ends of the two crushing rollers (3) are fixedly connected with gears, the two gears are meshed with each other, the rear side of the treatment box (2) is fixedly connected with a first motor, and the output shaft of the first motor is fixedly connected with the rear end of the corresponding crushing roller (3).

5. A circulating fluidized bed incinerator for incinerating sludge according to claim 4, wherein The outer wall of the incinerator body (1) is fixedly connected with a second motor, and the output shaft of the second motor is fixedly connected with the front side of the evaporation disc (205).

6. A circulating fluidized bed incinerator for incinerating sludge according to claim 5, wherein The top surface of the support (206) is slidably provided with a limiting rod (4), the limiting rod (4) is fixedly connected with the top surface of the pressing plate (202), the inside of the treatment box (2) is fixedly connected with support strips (401) on the front and rear sides, and the separation seat (203) is slidably provided with the outer wall of the support strip (401).

Images