Device for producing cement clinker by utilizing semi-coke fly ash
By designing a device that uses orchid dust removal ash to produce cement clinker, the problem of the impact of dust and high calorific value on cement quality during transportation and storage of orchid dust removal ash is solved, and the effective utilization of orchid dust removal ash and the stability of cement production are achieved.
Patent Information
- Application Number
- CN202421466133.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-06-25
AI Technical Summary
In the prior art, orchid dust removal ash is prone to dust during transportation and storage, resulting in secondary environmental pollution; its high calorific value may lead to excessive temperature of the cement firing system, affecting the quality of the cement; and the amount is difficult to accurately control, affecting the stability of cement production.
A device for producing cement clinker using orchid dust removal ash was designed, including a steel plate bin, a rotor scale, a Roots fan and a coal mill. The orchid dust removal ash was conveyed through pipelines, and the use of a rotor scale in the steel plate bin was accurately controlled. The Roots fan and a coal mill were ground into coal powder to reduce the calorific value and ensure stable supply.
It realizes the effective utilization of orchid dust removal ash, reduces cement production costs, improves the quality of cement products, avoids dust pollution and excessive temperature of cement firing system, and ensures the stability of cement production.
Smart Images
Figure CN222877833U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of cement production, and in particular relates to a device for producing cement clinker by utilizing blue coke dust removal ash. Background Art
[0002] Semi-coke is a new type of coal processing product, which is characterized by high fixed carbon content, high specific resistance and high chemical activity. It is a high-quality fuel and chemical raw material. However, in the production process of semi-coke, a large amount of dust ash will be generated. The main component of this dust ash is carbon, and it also contains a small amount of harmful substances such as sulfur and nitrogen. If not handled properly, this dust ash will cause serious pollution to the environment.
[0003] In the existing technology, the blue charcoal dust is used as fuel to produce cement clinker. Although the existing technical solution can realize the resource utilization of blue charcoal dust to a certain extent, there are still some problems: due to the small particle size of blue charcoal dust, it is easy to generate dust during transportation and storage, causing secondary pollution to the environment; due to the high calorific value of blue charcoal dust, directly using it as fuel may cause the temperature of the cement burning system to be too high, affecting the quality of cement; the amount of blue charcoal dust cannot be accurately controlled, which will also affect the stability of cement production. Therefore, improvements are needed. Summary of the invention
[0004] The utility model aims to provide a device for producing cement clinker by utilizing blue coke dust ash, thereby solving the problem in the prior art that it is inconvenient to recycle blue coke dust ash.
[0005] In order to achieve the above-mentioned purpose, the utility model provides a device for producing cement clinker using blue coke dust ash, comprising a steel silo, a material shut-off valve is arranged at the bottom of the steel silo, a Roots blower is arranged at the lower end of the steel silo and on the left side of the material shut-off valve, a rotor scale is arranged at the lower end of the material shut-off valve, a coal mill is arranged on the right side of the rotor scale, an air-locking discharger is arranged on the top of the coal mill, a Roots blower is arranged at the lower end of the rotor scale, and the Roots blower is connected to the coal mill through a pipeline.
[0006] The principle of the utility model is that when in use, the blue coke dust ash is transported to the factory by a tank truck and transported to a steel silo with a capacity of 1000 cubic meters through a pipeline with a diameter of 500mm. In this process, the pressure inside the pipeline is maintained between 0.8-1.2MPa to ensure the smooth transportation of blue coke dust ash. A rotor scale is installed at the lower part of the steel silo, and the metering range of the metering scale is 0-10t / h and the accuracy is ±0.5%. Through the metering scale, the amount of blue coke dust ash can be accurately controlled to ensure the stability of cement production. After the blue coke dust ash is measured by the rotor scale, it is blown into the coal mill through a Roots blower with a power of 7.5kW, and at the same time, the air lock discharger inputs coal into the coal mill, and the blue coke dust ash is ground together with the mixed coal. In this process, the speed of the coal mill is maintained at 1440r / min, and the grinding time is 30 minutes to ensure the full grinding of blue coke dust ash. The ground semi-coke dust is transported to the coal powder bin together with the mixed coal for use at the kiln head and kiln tail. During this process, the conveying speed is maintained at 10m / s to ensure the timely supply of semi-coke dust. Through the above steps, the semi-coke dust is effectively utilized, the cement production cost is reduced, and the quality of cement products is improved. At the same time, due to the use of closed transportation and storage methods, the dust problem generated by the semi-coke dust during transportation and storage is effectively prevented, reducing secondary pollution to the environment.
[0007] During the use of the Roots blower, when the air pressure inside the air outlet is too high, the gas will enter the fixed box, flow into the fixed pipe through the guide cover, and then enter the connecting pipe. The gas will push the plug to move, and the plug will drive the connecting pipe to move. The connecting pipe drives the slide rod to slide along the guide rod, and the slide rod squeezes the spring to separate the plug from the fixed seat. At this time, the gas inside the fixed seat can be discharged to achieve the purpose of depressurizing the inside of the air outlet, preventing the excessive air pressure during material transportation from affecting the conveying work.
[0008] The beneficial effects of the utility model are:
[0009] By using lignite dust ash as fuel to produce cement clinker, waste resource utilization is achieved and the environmental pollution caused by lignite dust ash is effectively reduced. The rotor scale can accurately control the dosage of lignite dust ash to avoid environmental pollution caused by inaccurate dosage. By grinding lignite dust ash with mixed coal, the calorific value of lignite dust ash is effectively reduced, avoiding the excessive temperature of the cement burning system caused by excessive calorific value, thereby improving the quality of cement. The lignite dust ash is transported through pipelines to avoid dust generated during transportation and storage, reducing secondary pollution to the environment.
[0010] By designing the function of the fixed seat, when the air pressure inside the air outlet is high, the gas will enter the fixed seat, and the gas will enter the connecting pipe to push the plug to move, so that the plug and the fixed seat can be separated, so that the gas entering the fixed seat can be discharged, thereby achieving the purpose of relieving the pressure inside the air outlet and preventing the excessive air pressure during material transportation from affecting the transportation work.
[0011] Furthermore, an air inlet is arranged at the top of the Roots blower, an air outlet is arranged at the right end of the Roots blower, a fixing seat is fixedly connected to the top of the air outlet, and a pressure relief mechanism is arranged on the fixing seat.
[0012] Furthermore, the pressure relief mechanism includes a deflector, the interior of the fixed seat is fixedly connected with the deflector, the top of the deflector is fixedly connected with a fixed pipe, the outer side of the fixed pipe is slidably sleeved with a connecting pipe, the outer side of the connecting pipe is fixedly connected with an air outlet, the left and right ends of the connecting pipe are fixedly connected with a sliding rod, the sliding rod is slidably connected with the fixed seat, the interior of the sliding rod is slidably sleeved with a guide rod, and a spring is arranged on the outer side of the guide rod. By designing the pressure relief mechanism, excessive internal air pressure can be prevented during material transportation.
[0013] Furthermore, the number of the wind outlets is multiple, and the multiple wind outlets are evenly distributed in a ring shape on the connecting pipe. By designing the wind outlets, the gas inside the connecting pipe can be discharged through the wind outlets.
[0014] Further, one end of the spring is fixedly connected to the slide bar, and the other end of the spring is fixedly connected to the fixing seat. The spring is designed so that the force of the spring can act on the slide bar. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the overall structure of a device for producing cement clinker using blue coke dust removal ash according to an embodiment of the present invention;
[0016] Figure 2 The present invention is a device for producing cement clinker using blue carbon dust removal ash Figure 1 Schematic diagram of Roots blower;
[0017] Figure 3 The present invention is a device for producing cement clinker using blue carbon dust removal ash Figure 2 An enlarged cross-sectional view of the air outlet;
[0018] Figure 4 The present invention is a device for producing cement clinker using blue carbon dust removal ash Figure 3 Enlarged view of point A. DETAILED DESCRIPTION
[0019] The following is further described in detail through specific implementation methods:
[0020] The reference numerals in the drawings of the specification include:
[0021] Steel silo 1, material shut-off valve 2, Roots blower 3, rotor scale 4, coal mill 5, air lock discharger 6, Roots blower 7, air inlet 8, pressure relief mechanism 9, air outlet 10, fixed seat 11, air guide cover 91, fixed pipe 92, connecting pipe 93, air outlet head 94, plug 95, slide rod 96, guide rod 97, spring 98.
[0022] like Figure 1 As shown, the present embodiment provides a device for producing cement clinker using lignite dust ash, comprising a steel silo 1, a material shut-off valve 2 is arranged at the bottom of the steel silo 1, a Roots blower 3 is arranged at the lower end of the steel silo 1 and on the left side of the material shut-off valve 2, a rotor scale 4 is arranged at the lower end of the material shut-off valve 2, a coal mill 5 is arranged on the right side of the rotor scale 4, the coal mill 5 maintains the rotation speed of the coal mill at 1440r / min, and the grinding time is 30 minutes. By designing the coal mill 5, sufficient grinding can be ensured, an air lock discharger 6 is arranged at the top of the coal mill 5, a Roots blower 7 is arranged at the lower end of the rotor scale 4, and the Roots blower 7 is connected to the coal mill 5 through a pipeline.
[0023] like Figure 1 , Figure 2 , Figure 3 As shown, an air inlet 8 is provided at the top of the Roots blower 7, an air outlet 10 is provided at the right end of the Roots blower 7, a fixing seat 11 is fixedly connected to the top of the air outlet 10, and a pressure relief mechanism 9 is provided on the fixing seat 11.
[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the pressure relief mechanism 9 includes a deflector 91, the deflector 91 is fixedly connected to the inside of the fixed seat 11, the top of the deflector 91 is fixedly connected to a fixed pipe 92, the outer side of the fixed pipe 92 is slidably sleeved with a connecting pipe 93, the outer side of the connecting pipe 93 is fixedly connected to an air outlet 94, the number of the air outlet 94 is multiple, and the multiple air outlets 94 are annular and evenly distributed on the connecting pipe 93. By designing the air outlet 94, the internal gas of the connecting pipe 93 can be discharged through the air outlet 94, and the top of the connecting pipe 93 is fixedly connected to a plug 95, and the plug 95 is connected to the fixed The seat 11 is slidably connected, and the fixed seat 11 can be closed by designing a plug 95. The left and right ends of the connecting pipe 93 are fixedly connected with a sliding rod 96. The sliding rod 96 is slidably connected to the fixed seat 11. The inner sliding sleeve of the sliding rod 96 is connected with a guide rod 97. The outer side of the guide rod 97 is provided with a spring 98. One end of the spring 98 is fixedly connected to the sliding rod 96, and the other end of the spring 98 is fixedly connected to the fixed seat 11. By designing the spring 98, the force of the spring 98 can act on the sliding rod 96. By designing the pressure relief mechanism 9, it can prevent the internal air pressure from being too high during material transportation.
[0025] The specific implementation process of the utility model is as follows: when in use, the blue charcoal dust is transported to the factory by a tank truck and transported to a steel silo 1 with a capacity of 1000 cubic meters through a pipeline with a diameter of 500mm. In this process, the pressure inside the pipeline is maintained between 0.8-1.2MPa to ensure the smooth transportation of blue charcoal dust. A rotor scale 4 is installed at the lower part of the steel silo 1, and the metering range of the metering scale is 0-10t / h and the accuracy is ±0.5%. Through the metering scale, the amount of blue charcoal dust can be accurately controlled to ensure the stability of cement production. After the blue charcoal dust is measured by the rotor scale 4, it is blown into the coal mill 5 through a Roots blower 7 with a power of 7.5kW, and at the same time, the air lock discharger 6 inputs coal into the coal mill 5, and the blue charcoal dust is ground together with the mixed coal. In this process, the speed of the coal mill is maintained at 1440r / min, and the grinding time is 30 minutes to ensure the full grinding of the blue charcoal dust. The ground semi-coke dust is transported to the coal powder bin together with the mixed coal for use at the kiln head and kiln tail. During this process, the conveying speed is maintained at 10m / s to ensure the timely supply of semi-coke dust. Through the above steps, the semi-coke dust is effectively utilized, the cement production cost is reduced, and the quality of cement products is improved. At the same time, due to the use of closed transportation and storage methods, the dust problem generated by the semi-coke dust during transportation and storage is effectively prevented, reducing secondary pollution to the environment.
[0026] During the use of the Roots blower 7, when the air pressure inside the air outlet 10 is too high, the gas will enter the fixed box 11, and the gas will flow to the fixed pipe 92 through the deflector 91, and then the gas will enter the connecting pipe 93, and the gas will push the plug 95 to move, and the plug 95 will drive the connecting pipe 93 to move, and the connecting pipe 93 will drive the sliding rod 96 to slide along the guide rod 97, and the sliding rod 96 will squeeze the spring 98, so that the plug 95 is separated from the fixed seat 11, and the gas inside the fixed seat 11 can be discharged at this time, so as to achieve the purpose of relieving the pressure inside the air outlet 10, and prevent the excessive air pressure from affecting the conveying work during the material conveying process.
[0027] The beneficial effects of the utility model are:
[0028] By using lignite dust ash as fuel to produce cement clinker, waste resource utilization is achieved and the environmental pollution caused by lignite dust ash is effectively reduced. The rotor scale 4 can accurately control the dosage of lignite dust ash to avoid environmental pollution caused by inaccurate dosage. By grinding lignite dust ash with mixed coal, the calorific value of lignite dust ash is effectively reduced, and the excessive temperature of the cement burning system caused by excessive calorific value is avoided, thereby improving the quality of cement. The lignite dust ash is transported through pipelines to avoid dust generated during transportation and storage, thereby reducing secondary pollution to the environment.
[0029] By designing the function of the fixed seat, when the air pressure inside the air outlet 10 is relatively high, the gas will enter the fixed seat 11, and the gas will enter the connecting pipe 93 to push the plug 95 to move, thereby realizing the separation of the plug 95 from the fixed seat 11, so that the gas entering the fixed seat 11 can be discharged, thereby achieving the purpose of relieving the pressure inside the air outlet 10, and preventing the excessive air pressure during material transportation from affecting the transportation work.
[0030] It should be noted in advance that, in the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0031] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A device for producing cement clinker using blue coke dust, comprising a steel silo, characterized in that: A material shut-off valve is provided at the bottom of the steel silo, a Roots blower is provided at the lower end of the steel silo and on the left side of the material shut-off valve, a rotor scale is provided at the lower end of the material shut-off valve, a coal mill is provided on the right side of the rotor scale, an air-locking discharger is provided at the top of the coal mill, a Roots blower is provided at the lower end of the rotor scale, and the Roots blower is connected to the coal mill through a pipeline.
2. The device for producing cement clinker using blue carbon dust removal ash according to claim 1, characterized in that: An air inlet is arranged at the top of the Roots blower, an air outlet is arranged at the right end of the Roots blower, a fixing seat is fixedly connected to the top of the air outlet, and a pressure relief mechanism is arranged on the fixing seat.
3. The device for producing cement clinker using blue carbon dust removal ash according to claim 2 is characterized in that: The pressure relief mechanism includes a deflector cover, the interior of the fixed seat is fixedly connected with the deflector cover, the top of the deflector cover is fixedly connected with a fixed tube, the outer side of the fixed tube is slidably sleeved with a connecting tube, the outer side of the connecting tube is fixedly connected with an air outlet, the top of the connecting tube is fixedly connected with a plug, the plug is slidably connected to the fixed seat, the left and right ends of the connecting tube are fixedly connected with a sliding rod, the sliding rod is slidably connected to the fixed seat, the interior of the sliding rod is slidably sleeved with a guide rod, and a spring is provided on the outside of the guide rod.
4. The device for producing cement clinker using blue carbon dust removal ash according to claim 3 is characterized in that: There are multiple wind outlets, and the multiple wind outlets are arranged in a ring shape and evenly distributed on the connecting pipe.
5. The device for producing cement clinker using blue carbon dust removal ash according to claim 3 is characterized in that: One end of the spring is fixedly connected to the slide bar, and the other end of the spring is fixedly connected to the fixing seat.