Cooperative special material treatment device for cement kiln

Abstract

The utility model provides a cement kiln collaborative special material treatment device which comprises a decomposing furnace, a rotary kiln, a storage pool, a clinker outlet, a material treatment device, a feeding pipeline, a first air blower, a gas cooler, a cyclone separator, a dust treatment device, a dust collector, an induced draft fan, an odor treatment system, a dilution cooler and a second air blower. The rotary kiln is cast and connected to the lower part of the decomposing furnace through bolts and is communicated with the decomposing furnace; the right side of the rotary kiln is built on the left upper side of the interior of the storage pool; the clinker outlet is formed in the right lower side of the front part of the storage pool. By utilizing the advantage of high-temperature calcination of the cement kiln, hazardous wastes such as strong acid, strong alkali and strong oxidizing property are incinerated at high temperature, so that the generated waste gas is cleanly discharged after being treated by a denitrification system, a desulfurization system and the like, and the generated residues are solidified into clinker through mineralization reaction of materials, so that the generation of secondary pollutants can be avoided; and clean, reduced and harmless treatment is realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to special material processing equipment technical field especially relates to a cement kiln cooperates special material processing device. BACKGROUND

[0002] At present, cement kiln cooperates and processes special material and has obtained the extensive application. Many developed countries utilize cement kiln to cooperatively process city garbage, industrial waste, hazardous waste and other special materials, realize the resource utilization and harmlessness of waste. But the application of cement kiln cooperates and processes special material in our country is still in the primary stage. Although some enterprises have begun to try to utilize cement kiln to cooperatively process special material, there are still many problems in technology, equipment, environmental protection policy and so on.

[0003] In addition, the patent for utility model with the patent number CN116854338A and the name of a kind of cement kiln sludge cooperative processing device relates to sludge processing equipment technical field. The present application includes drying cylinder and screw conveyor, and the screw conveyor is inserted into the drying cylinder;Drying cylinder is rotatably connected with the material stirring disc, and is connected with the bottom plate;The bottom plate is provided with a discharge chute, and is connected with the discharge conveyor;The outer wall of the screw conveyor is connected with the annular plate of umbrella structure, and the surface of the annular plate is circumferentially arranged with a plurality of blocking needles. Especially for the processing of some special materials, the technical difficulty and cost are higher, and there are still a lot of secondary pollutants in the processing process, the comprehensive utilization rate of resources is very low, which causes great waste of cost.

[0004] Therefore, it is necessary to provide a cement kiln cooperative special material processing device. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical problems, the utility model provides a cement kiln cooperative special material processing device, which utilizes the advantage of high temperature calcination of cement kiln to high temperature incinerate dangerous waste such as strong acid, strong alkali and strong oxidizing property, so that the generated waste gas is treated by denitrification and desulfurization system and then discharged clean, and the generated residue is solidified into clinker through mineralization reaction of material, which is expected to avoid the generation of secondary pollutants, realize clean, reduction and harmless disposal;The heat generated by incineration of special materials can be supplemented to the cement raw material decomposition system, so as to reduce the use of fuel and improve the comprehensive utilization rate of resources.

[0006] A special material handling device for cement kilns includes a decomposition furnace, a rotary kiln, a storage tank, a clinker outlet, a material processor, a feeding pipeline, a first blower, a gas cooler, a cyclone separator, a dust processor, a dust collector, an induced draft fan, an odor treatment system, a dilution cooler, and a second blower. The rotary kiln is cast and bolted to the lower part of the decomposition furnace and interconnected with it. The right side of the rotary kiln is built into the upper left side of the storage tank. The clinker outlet is located on the lower right side of the front part of the storage tank. The feeding pipeline is located on one side. The first blower is connected to the material processor pipeline; one side of the first blower is threadedly connected to the feeding pipeline, and the other side is connected to the gas cooler pipeline; the cyclone separator is connected to the decomposition furnace pipeline; one side of the cyclone separator is connected to the cyclone separator pipeline, and the other side is connected to the dust collector pipeline; one end of the induced draft fan is connected to the dust collector pipeline, and the other end is connected to the odor treatment system; the dilution cooler is connected to the decomposition furnace pipeline and is also connected to the second blower pipeline.

[0007] Preferably, the heating temperature of the decomposition furnace and the rotary kiln is set at 1500℃-1800℃.

[0008] Preferably, the mineralization reaction is carried out inside the decomposition furnace and rotary kiln to solidify into clinker.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] The high-temperature environment of rotary kilns and decomposition furnaces is used to finally dispose of and treat the waste gas, slag, and wastewater generated in each stage, achieving complete resource utilization and harmless treatment of waste slag and wastewater, and achieving zero emissions. Taking advantage of the high-temperature calcination of cement kilns, hazardous wastes such as strong acids, strong alkalis, and strong oxidizing agents are incinerated at high temperatures. The resulting waste gas is treated by denitrification and desulfurization systems before being discharged cleanly. The residue is solidified into clinker through the mineralization reaction of the materials, which is expected to avoid the generation of secondary pollutants and achieve clean, reduced, and harmless treatment. The heat generated by the incineration of special materials can be used to supplement the cement raw material decomposition system, thereby reducing fuel consumption and improving the comprehensive utilization rate of resources. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] In the picture:

[0013] 1. Decomposition furnace; 2. Rotary kiln; 3. Storage tank; 4. Clinker outlet; 5. Material processor; 6. Feeding pipeline; 7. First blower; 8. Gas cooler; 9. Cyclone separator; 10. Dust processor; 11. Dust collector; 12. Exhaust fan; 13. Odor treatment system; 14. Dilution cooler; 15. Second blower. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings:

[0015] Example:

[0016] As attached Figure 1 As shown, this utility model provides a cement kiln co-processing special material handling device, including a decomposition furnace 1, a rotary kiln 2, a storage tank 3, a clinker outlet 4, a material processor 5, a feeding pipeline 6, a first blower 7, a gas cooler 8, a cyclone separator 9, a dust processor 10, a dust collector 11, an induced draft fan 12, an odor treatment system 13, a dilution cooler 14, and a second blower 15. The rotary kiln 2 is cast and bolted to the lower part of the decomposition furnace 1 and interconnected with it; the right side of the rotary kiln 2 is built into the upper left side of the storage tank 3; the clinker outlet 4 is located on the lower right side of the front part of the storage tank 3; the feeding pipeline 6, the first blower 7, a gas cooler 8, a cyclone separator 9, a dust processor 10, a dust collector 11, an induced draft fan 12, an odor treatment system 13, a dilution cooler 14, and a second blower 15. The feed pipe 6 is located on one side and connected to the material processor 5; the first blower 7 is threadedly connected to the feed pipe 6 on one side and connected to the gas cooler 8 on the other side; the cyclone separator 9 is connected to the decomposition furnace 1; one side of the cyclone separator 9 is connected to the cyclone separator 9 and the other side is connected to the dust collector 11; one end of the induced draft fan 12 is connected to the dust collector 11 and the other end is connected to the odor treatment system 13; the dilution cooler 14 is connected to the decomposition furnace 1 and connected to the second blower 15.

[0017] In the above implementation scheme, specifically, the heating temperature of the decomposition furnace 1 and the rotary kiln 2 is set at 1500℃-1800℃.

[0018] Specifically, in the above implementation scheme, the mineralization reaction and solidification into clinker are carried out inside the decomposition furnace 1 and the rotary kiln 2.

[0019] The high-temperature environment of rotary kiln 2 and decomposition furnace 1 is used to finally dispose of and treat the waste flue gas, waste residue and wastewater generated in each stage, so as to completely realize the resource utilization and harmless treatment of waste residue and wastewater and achieve zero emissions. The high-temperature flue gas generated by waste incineration is cooled to 200°C by the waste heat boiler and then sent to the high-temperature zone. It is heated to 800-900°C by the high-temperature cement clinker and then sent into the decomposition furnace along with the tertiary air. The high-temperature alkaline conditions of 880°C in the furnace are used to further absorb and treat harmful substances such as dioxins generated by incineration, so that the toxic organic matter is completely decomposed and eliminated. Then, it is discharged into the atmosphere after passing through the preheater and cement kiln tail gas treatment device.

[0020] The slag from waste incineration and the slag separated from construction waste are transported together to the raw material batching system and fed into the rotary kiln with the raw materials for high-temperature calcination. The heavy metal ions are solidified in the clinker, ensuring that no secondary pollution will occur. The concentrated liquid generated in the leachate treatment system is directly sent to the decomposition furnace for high-temperature treatment.

[0021] In addition, during normal operation of the cement kiln system, part of the odor generated in the solid waste storage workshop is fed into the grate furnace as combustion air, and the other part is introduced into the high-temperature side of the cement kiln grate cooler, where both are burned, oxidized, and decomposed under high-temperature conditions. During kiln shutdown and maintenance, the odor is treated by the odor treatment system to meet standards before being released into the environment. The odor treatment system ensures that the production workshop operates under negative pressure, preventing any odor leakage and causing no disturbance to the cement plant or its surrounding environment.

[0022] By utilizing the high-temperature calcination advantage of cement kilns, hazardous wastes such as strong acids, strong alkalis, and strong oxidizing agents are incinerated at high temperatures. The resulting exhaust gas is then treated by denitrification and desulfurization systems before being discharged cleanly. The residue is solidified into clinker through the mineralization reaction of the materials, which is expected to avoid the generation of secondary pollutants and achieve clean, reduced, and harmless disposal. The heat generated from the incineration of special materials can be used to supplement the cement raw material decomposition system, thereby reducing fuel consumption and improving the comprehensive utilization rate of resources.

[0023] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A special material handling device for cement kilns, characterized in that, The cement kiln, in conjunction with a special material handling device, includes a decomposition furnace (1), a rotary kiln (2), a storage tank (3), a clinker outlet (4), a material processor (5), a feeding pipeline (6), a first blower (7), a gas cooler (8), a cyclone separator (9), a dust processor (10), a dust collector (11), an induced draft fan (12), an odor treatment system (13), a dilution cooler (14), and a second blower (15). The rotary kiln (2) is cast and bolted to the lower part of the decomposition furnace (1), and interconnected with it. The right side of the rotary kiln (2) is built into the upper left side of the storage tank (3). The clinker outlet (4) is located on the lower right side of the front part of the storage tank (3). Pipeline (6) is set on one side and connected to the material processor (5) pipeline; the first blower (7) is threadedly connected to the feeding pipeline (6) on one side and connected to the gas cooler (8) pipeline on the other side; the cyclone separator (9) is connected to the decomposition furnace (1) pipeline; one side of the cyclone separator (9) is connected to the cyclone separator (9) pipeline and the other side is connected to the dust collector (11) pipeline; one end of the induced draft fan (12) is connected to the dust collector (11) pipeline and the other end is connected to the odor treatment system (13); the dilution cooler (14) is connected to the decomposition furnace (1) pipeline and connected to the second blower (15) pipeline.

2. The cement kiln co-processing special material handling device as described in claim 1, characterized in that, The heating temperature of the decomposition furnace (1) and rotary kiln (2) is set at 1500℃-1800℃.

3. The cement kiln co-processing special material handling device as described in claim 1, characterized in that, The mineralization reaction is carried out inside the decomposition furnace (1) and the rotary kiln (2) to solidify into clinker.

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