CN211650255U - Pre-combustion system for treating hazardous waste and solid waste in cooperation with cement kiln - Google Patents
Pre-combustion system for treating hazardous waste and solid waste in cooperation with cement kiln Download PDFInfo
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- CN211650255U CN211650255U CN201921479614.7U CN201921479614U CN211650255U CN 211650255 U CN211650255 U CN 211650255U CN 201921479614 U CN201921479614 U CN 201921479614U CN 211650255 U CN211650255 U CN 211650255U
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Abstract
The utility model discloses a cement kiln deals with useless precombustion system admittedly of danger in coordination burns burning furnace air inlet interface, the air inlet interface passes through the expansion joint and connects the tertiary tuber pipe, the tertiary tuber pipe is close to the upper portion of expansion joint end and has seted up the feed inlet, the thick liquid sediment pipeline is connected to the feed inlet, the both sides that the tertiary tuber pipe is close to the expansion joint end all are equipped with the side direction air bubble, the injection direction of side direction air bubble is towards the air inlet interface. The utility model discloses an add the system of burning in advance, the effectual solid useless burning treatment efficiency that has improved reduces the decomposition furnace and uses the coal volume to can effectively ensure solid useless can fully burn, make carbon monoxide in 0.1-0.2% within range, there is not obvious undulant.
Description
Technical Field
The utility model relates to a solid useless incineration disposal field.
Background
The cement kiln is used for cooperatively treating wastes, a series of national standards and technical specifications are provided in China, and through combing and summarizing of feeding ports of related technical specifications, the positions of the feeding ports of China mainly comprise a kiln head, a decomposing furnace and a raw material mill, wherein the decomposing furnace is the main feeding position. According to the requirements of environmental protection and technical protection regulations for co-processing waste in cement kilns, the specific selection of the adding position is determined according to the characteristics of the waste, which is a basic starting point from the aspects of environmental protection and waste disposal, and the general principle is to ensure that the solid waste stays for a long time at a high temperature section, the longer the time is, the more the waste is beneficial to waste incineration, and meanwhile, the influence on clinker calcination and cement production is reduced as much as possible.
As the decomposing furnace has various types, even the sizes of all parts of the decomposing furnace of the same furnace type are different, and the specific position of the adding port is not required in the approval examination guide of the hazardous waste co-disposal in the cement kiln, the problems of large influence of the incineration waste on the kiln condition, high heat consumption, large influence on the yield and the like are found in the actual operation of the waste co-disposal in the cement kiln, and the adding point position of the decomposing furnace is subjected to continuous change grope test to cause great passivity. For the reasons, the solid waste, particularly the solid waste wrapped by the material with high heat value, can cause insufficient combustion in the decomposing furnace, so that the problem of large fluctuation of carbon monoxide and restriction of disposal quantity is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that realize a system of burn-in that improves the abundant degree of burning of discarded object in cement kiln incinerator.
In order to realize the purpose, the utility model discloses a technical scheme be: the utility model provides a cement kiln deals with useless precombustion system that admits air of burning furnace in coordination, the air admitting air interface passes through the expansion joint and connects the tertiary tuber pipe, the tertiary tuber pipe is close to the upper portion of expansion joint end and has seted up the feed inlet, the thick liquid sediment pipeline is connected to the feed inlet, the both sides that the tertiary tuber pipe is close to the expansion joint end all are equipped with the side direction air bubble, the jet direction of side direction air bubble is towards the air admitting interface.
The utility model discloses a cubic air duct, including tertiary tuber pipe, incineration plate, support column, incineration plate, tertiary tuber pipe, incineration plate and tertiary tuber pipe bottom, the feed inlet below of tertiary tuber pipe is equipped with burns the board, it is latticed panel to burn the board, it passes through the support column to be fixed on tertiary tuber pipe inner wall to burn the board, it has the clearance to burn between board and.
The incineration plate is obliquely fixed in the tertiary air pipe, and the inclination direction of the incineration plate gradually reduces towards the height of the air inlet incineration plate.
Lateral air cannons are arranged above the incineration plates and between the incineration plates and the bottoms of the tertiary air pipes.
And a bottom air cannon for fixing the upward injection at the bottom of the tertiary air pipe is arranged below the incineration plate.
And a high-temperature camera fixed on the inner wall of the tertiary air pipe is arranged on the side surface or the upper part of the tertiary air pipe close to the expansion joint end.
The utility model discloses an add the system of burning in advance, the effectual solid useless burning treatment efficiency that has improved reduces the decomposition furnace and uses the coal volume to can effectively ensure solid useless can fully burn, make carbon monoxide in 0.1-0.2% within range, there is not obvious undulant.
In addition, the system does not need to increase extra equipment investment, fully utilizes the thermal pipeline of the cement kiln as a dangerous waste incineration pre-combustion space, improves the treatment efficiency of waste, realizes the reduction target, promotes the deep development of circular economy, and has positive effects.
Drawings
The following brief descriptions of the contents expressed by each figure and the marks in the figures in the specification of the present invention are as follows:
FIG. 1 is a schematic diagram of a pre-combustion system for co-processing hazardous waste and solid waste in a cement kiln;
the labels in the above figures are: 1. a decomposing furnace; 2. a tertiary air pipe; 3. an expansion joint; 4. a slurry and slag pipeline; 5. incinerating the board; 6. a high temperature camera; 7. a lateral air cannon; 8. a bottom air cannon.
Detailed Description
The following description of the embodiments with reference to the drawings is intended to illustrate the present invention in further detail, such as the shapes and structures of the components, the mutual positions and connections between the components, the functions and working principles of the components, the manufacturing process, and the operation and use methods, etc., so as to help those skilled in the art understand the present invention more completely, accurately and deeply.
Aiming at the defects existing in the adding position arranged on the shell of the decomposing furnace 1, scientific research personnel of the company determines to adjust the adding position to the port of the decomposing furnace 1 through researching a large amount of theoretical data of cement process, suspension preheating, gas-solid chemical principle and cement kiln cooperated with related process equipment, and completely solves the influence of a large amount of CO generated by incomplete combustion of slurry slag on the working condition of a kiln system by looking at the operation effect after the production line is technically improved.
The pre-combustion system for the cooperative disposal of hazardous waste and solid waste in the cement kiln is characterized in that a feed inlet is formed in the upper part of a tertiary air pipe 2 close to an end of an expansion joint 3, the feed inlet is connected with a slurry slag pipeline 4, the slurry slag pipeline 4 is used for transporting solid waste slurry slag, the slurry slag is scattered by compressed air through a spray port and then is fed into the tertiary air pipe 2 to an inlet of a decomposing furnace 1, the slurry slag stays and burns in the tertiary air pipe 2, the tertiary air is selected to enter a port of the decomposing furnace 1, the air volume is sufficient, the oxygen content is basically about 18-20%, part of the slurry slag is instantly ignited and burnt at the temperature of 800 ℃, residues after burning are in a powder shape or a block shape, and heat generated after slurry slag burning can enter the decomposing furnace.
In addition, a high-temperature camera 6 can be arranged on the side surface or the upper part of the tertiary air pipe 2, so that the combustion state of the slurry slag at the position can be monitored in real time conveniently, and the slurry slag input amount and the air cannon operation interval time can be adjusted in time.
In order to further improve the pre-burning effect and efficiency, an incineration plate 5 is arranged below a feed inlet of the tertiary air pipe 2, the incineration plate 5 is a latticed metal plate, the incineration plate 5 is fixed on the inner wall of the tertiary air pipe 2 through a support column, a gap is formed between the incineration plate 5 and the bottom of the tertiary air pipe 2, the tertiary air can pass through the gap, the tertiary air can be blown from the incineration plate 5 to the top, and the pre-burning effect and efficiency are improved. The incineration plates 5 are obliquely fixed in the tertiary air pipe 2, the height of the incineration plates 5 towards the air inlet is gradually reduced in the oblique direction of the incineration plates 5, so that the incineration plates are influenced by tertiary air, slurry and slag can gradually roll towards the incinerator, and the effect of driving the slurry and slag into the decomposing furnace 1 by the lateral air cannons 7 can be improved.
In the use process, it is found that the lateral air cannons 7 are arranged at the two side positions of the tertiary air pipe 2, the burnt residues cannot be timely driven into the decomposing furnace 1 (accumulation phenomenon exists) in work, the ventilation quantity of the tertiary air entering the furnace is influenced, coal dust in the decomposing furnace 1 is not completely burnt, meanwhile, the gridded hollowed incineration plates 5 can downwards seep the residues and deposit in the gaps to influence the ventilation effect of the tertiary air, therefore, the lateral air cannons 7 are arranged above the incineration plates 5 and between the incineration plates 5 and the bottom of the tertiary air pipe 2, the residues above and below the incineration plates 5 can be timely driven into the decomposing furnace 1, in order to further improve the treatment effect, the bottom air cannons 8 for fixing the upward injection at the bottom of the tertiary air pipe 2 are arranged below the incineration plates 5, the bottom air cannons 8 are preferentially arranged at the bottom of the tertiary air pipe 2 (slurry and slag falling accumulation point) and move 50 centimeters in the direction close, 3 bottom air cannons 8 (bottom air cannon 8 and side direction in the air cannon 7 of side direction "bottom" and "side direction" just distinguish the mounted position of two air cannons, and both are conventional air cannons), and when the in-service operator found the residue to have the pile up the phenomenon through high temperature camera 6, just manually opened bottom air cannon 8 and in time sent the sediment residue into the kiln and calcine, reduce the hindrance that causes the income stove amount of wind because of the pile up of residue now.
The current operating parameter conditions are as follows:
according to the parameter information, the influence of the slurry slag treatment capacity of 4-5t/h on the working condition of the kiln is small, and the coal consumption of clinker calcining substances is reduced after the slurry slag with high heat value enters the decomposing furnace. The heat value of the slurry slag is 2500-; the coal amount of the decomposing furnace for the slurry slag flow is reduced by about 2t per hour when the slurry slag flow is 4-5t/h compared with that before slurry slag is not added. In addition, the influence of the feeding point of the slurry slag on the kiln condition is large in the middle of the decomposing furnace 1 at present, and the fluctuation of carbon monoxide is 0.5-1.0% within 500 kilocalories; the slurry slag feeding point of the system is at the port of the tertiary air pipe 2 entering the decomposing furnace 1, the heat value is 2500-. The system solves the problem that the handling capacity is restricted and the combustion is sufficient due to the fact that the carbon monoxide is greatly fluctuated due to insufficient wrapping combustion of the high-heat-value materials.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.
Claims (6)
1. Cement kiln deals with useless solid useless precombustion system of danger in coordination, burns burning furnace air inlet interface, the air inlet interface passes through expansion joint and connects tertiary tuber pipe, its characterized in that: the upper part of the tertiary air pipe close to the expansion joint end is provided with a feed inlet, the feed inlet is connected with a slurry slag pipeline, two sides of the tertiary air pipe close to the expansion joint end are both provided with lateral air cannons, and the spraying direction of the lateral air cannons is towards an air inlet connector.
2. The pre-combustion system for the cement kiln co-processing hazardous waste and solid waste, according to claim 1, is characterized in that: the utility model discloses a cubic air duct, including tertiary tuber pipe, incineration plate, support column, incineration plate, tertiary tuber pipe, incineration plate and tertiary tuber pipe bottom, the feed inlet below of tertiary tuber pipe is equipped with burns the board, it is latticed panel to burn the board, it passes through the support column to be fixed on tertiary tuber pipe inner wall to burn the board, it has the clearance to burn between board and.
3. The pre-combustion system for the cement kiln co-processing hazardous waste and solid waste, according to claim 2, is characterized in that: the incineration plate is obliquely fixed in the tertiary air pipe, and the inclination direction of the incineration plate gradually reduces towards the height of the air inlet incineration plate.
4. The pre-combustion system for the cement kiln co-processing of hazardous waste and solid waste, according to claim 3, is characterized in that: lateral air cannons are arranged above the incineration plates and between the incineration plates and the bottoms of the tertiary air pipes.
5. The pre-combustion system for the cement kiln co-processing of hazardous waste and solid waste according to claim 2, 3 or 4, characterized in that: and a bottom air cannon for fixing the upward injection at the bottom of the tertiary air pipe is arranged below the incineration plate.
6. The pre-combustion system for the cement kiln co-processing of hazardous waste and solid waste, according to claim 5, is characterized in that: and a high-temperature camera fixed on the inner wall of the tertiary air pipe is arranged on the side surface or the upper part of the tertiary air pipe close to the expansion joint end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921479614.7U CN211650255U (en) | 2019-09-06 | 2019-09-06 | Pre-combustion system for treating hazardous waste and solid waste in cooperation with cement kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921479614.7U CN211650255U (en) | 2019-09-06 | 2019-09-06 | Pre-combustion system for treating hazardous waste and solid waste in cooperation with cement kiln |
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| Publication Number | Publication Date |
|---|---|
| CN211650255U true CN211650255U (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921479614.7U Active CN211650255U (en) | 2019-09-06 | 2019-09-06 | Pre-combustion system for treating hazardous waste and solid waste in cooperation with cement kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211650255U (en) |
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2019
- 2019-09-06 CN CN201921479614.7U patent/CN211650255U/en active Active
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