Device for improving safety and production efficiency of semi-coke drying kiln
By installing sieve plates and cooling components on the semi-coke drying kiln, the problems of bag damage and uneven hot air caused by sieve plate gaps during vertical kiln drying were solved, thus improving the safety and production efficiency of the semi-coke drying kiln.
Patent Information
- Application Number
- CN202422726548.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-08
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-08
AI Technical Summary
In existing vertical kiln drying technology, the gaps between the screen plates cause semi-coke particles to enter the bag filter, resulting in damage to the filter bags and uneven hot air, which affects the drying effect and production safety.
A sieve plate and a cooling component are installed on the semi-coke drying kiln. The inner ring of the sieve plate has sieve holes, while the outer ring does not. Combined with the cooling layer, exhaust fan, and circulating cold air fan, a cooling cycle is formed to prevent high-temperature particles from entering the filter bag and to evenly cool the hot airflow.
It effectively prevents damage to the cloth bags, ensures uniform airflow, improves drying efficiency, reduces the risk of production safety accidents, and ensures the safe operation of the production line.
Smart Images
Figure CN223448952U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of calcium carbide production, and in particular relates to a device for improving the safety and production efficiency of a semi-coke drying kiln. BACKGROUND
[0002] Semi-coke, as one of the important raw materials for producing calcium carbide, has the characteristics of high moisture content, low ignition point, and poor strength, and therefore must be dried before entering the calcium carbide furnace. At present, the main equipment for the semi-coke drying process is a rotary kiln and a vertical kiln. The vertical kiln is the preferred choice for the main equipment for semi-coke drying because of its advantages in terms of breakage rate and energy consumption.
[0003] The semi-coke drying process requires very high technology and equipment because the semi-coke has a high moisture content, a complex internal pore structure, and a slow evaporation rate of moisture, and is loose in texture and prone to producing powder after drying, which affects the evaporation of moisture. The semi-coke drying process is also very demanding, and the moisture content must be reduced to below 1%. The existing vertical kiln drying technology mainly uses the heat provided by a fluidized bed furnace to draw hot air into the drying vertical kiln through an air blower. The inner core of the vertical kiln has an inner and outer conical structure, which allows the hot air to pass through the annular material layer multiple times, thereby improving the drying efficiency. This design to some extent solves some technical problems in the semi-coke drying process, such as improving the drying speed and reducing energy consumption.
[0004] However, the vertical kiln drying technology still faces some challenges in actual operation. In particular, the gap between the two sides of the vibrating screen plate has a negative impact on the drying effect of the semi-coke and the safe operation of the equipment. Because of the gap between the screen plates, larger particles of semi-coke can easily flow through the gap and be sucked into the dust cloth bag. These particles are high in temperature and can easily exceed the temperature limit of the cloth bag, thereby easily burning out the cloth bag, increasing the equipment maintenance cost, and possibly affecting the normal operation of the production line. In addition, the gap has no resistance, and the air volume is large, which leads to uneven air distribution, making the semi-coke unevenly heated during the drying process, and thus affecting the drying effect and the moisture content. The damage to the cloth bag and the instability of the drying effect can cause production safety accidents, such as fires and explosions, which pose a serious threat to the safe operation of the production line.
[0005] In summary, the existing vertical kiln drying technology still has some problems to be solved when processing semi-coke. In order to improve the safety and production efficiency of the semi-coke drying kiln, a new device needs to be developed to solve these problems. SUMMARY
[0006] The device for improving the safety and production efficiency of a semi-coke drying kiln solves the problems of high-temperature particles damaging the cloth bag and uneven air distribution, and improves the safety and production efficiency of the semi-coke drying kiln.
[0007] The technical scheme used by the utility model is as follows:
[0008] A device for improving the safety and production efficiency of the semi-coke drying kiln is arranged on the semi-coke drying kiln and comprises a sieve plate and a cooling assembly, the sieve plate is fixed on the top of the kiln body of the semi-coke drying kiln, the cooling assembly is fixedly connected to the sieve plate, a plurality of sieve holes are formed in the sieve plate,
[0009] The cooling assembly comprises a cooling layer, an air extractor and a circulating cold air fan, the cooling layer is fixedly connected to the sieve plate, one side of the cooling layer is communicated with the air guide pipeline of the semi-coke drying kiln, an air extraction pipeline is communicated with one side of the top of the cooling layer, the air extraction pipeline is connected to the air extractor, the air extractor is connected to the circulating cold air fan, an air outlet pipeline is connected to the air outlet of the circulating cold air fan, and the air outlet pipeline is communicated with one side of the cooling layer which is away from the air guide pipeline.
[0010] Further, the air extraction pipeline and the air outlet pipeline are located on opposite sides of the cooling layer.
[0011] Further, the sieve holes are not formed in the outer ring of the sieve plate, and a plurality of sieve holes are uniformly formed in the inner ring of the sieve plate.
[0012] Further, the opening area of the sieve plate is greater than the sectional area of the air guide pipeline.
[0013] Further, the sieve holes are formed in the area 100mm away from the edge of the sieve plate, the sieve hole diameter is 10mm, and the center distance of the sieve holes is 20mm.
[0014] The utility model has the advantages of:
[0015] 1. The safety of the semi-coke drying kiln is significantly improved: in the utility model, the design of the sieve plate not only effectively avoids the large-particle semi-coke from flowing through the gap between the sieve plates and entering the bag-type dust collector, reduces the risk of damage to the bag due to high-temperature particles, prolongs the service life of the bag, and ensures the uniformity of the air distribution, which helps the uniform heating of the semi-coke during the drying process and improves the drying efficiency.
[0016] 2. The utility model comprises a cooling assembly, the combination of the cooling layer, the air extractor and the circulating cold air fan forms an efficient cooling cycle, the hot air flow is affected by the cold air flow in the space formed by the sieve plate and the cooling layer, the temperature is significantly reduced, and when the hot air flow enters the bag-type dust collector, the temperature is within the safe range, further ensuring the safety of the bag; and the cooling layer buffers and cools the hot air flow, but does not change the flow direction and speed of the hot air flow, so that the hot air flow can smoothly pass through the annular material layer and contact the semi-coke multiple times, thereby improving the drying speed.
[0017] 3. Since the risk of bag damage is reduced and the temperature of the hot air flow is effectively controlled, the utility model significantly reduces the risk of production safety accidents such as fire and explosion caused by bag damage or high temperature, and provides a strong guarantee for the safe operation of the production line. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the assembly of a device for improving the safety and production efficiency of a semi-coke drying kiln provided by the present invention;
[0019] Figure 2 This is a schematic diagram of the partial structure of the device provided by the utility model for improving the safety and production efficiency of the semi-coke drying kiln.
[0020] In the accompanying drawings, the components represented by the reference numerals are as follows:
[0021] 1. Kiln body; 2. Hot air furnace; 3. Bag filter; 4. Induced draft fan; 5. Sieve plate; 6. Cooling component; 7. Induced draft duct; 61. Cooling layer; 62. Exhaust duct; 63. Exhaust fan; 64. Circulating air cooler; 65. Exhaust duct. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings.
[0024] like Figure 1 As shown, this embodiment provides a device for improving the safety and production efficiency of a lignite drying kiln, which is arranged on a lignite drying kiln and includes a sieve plate 5 and a cooling component 6. The sieve plate 5 is fixed on the top of the kiln body 1 of the lignite drying kiln, and the cooling component 6 is fixedly connected to the sieve plate 5. No sieve holes are provided on the outer circle of the sieve plate 5, and multiple sieve holes are evenly provided on the inner circle of the sieve plate 5. The opening area of the sieve plate 5 is larger than the cross-sectional area of the induced draft duct 7 to prevent affecting the normal flue gas flow. Specifically, in this embodiment, the opening area of the sieve holes is 100 mm away from the edge of the sieve plate 5, the sieve hole diameter is 10 mm, and the center spacing of the sieve holes is 20 mm. This opening design can maintain the gas flow direction, so that the air distribution on the sieve plate 5 is uniform, the moisture content of the lignite can be kept uniform, and high-temperature large particles can be effectively prevented from entering the bag collector 3.
[0025] Specifically, if Figure 1 and Figure 2As shown, the cooling assembly 6 includes a cooling layer 61, an air extractor 63 and a circulating cold air fan 64, the cooling layer 61 is fixedly connected to the sieve plate 5 and is in a cylindrical shape, the bottom of the cooling layer 61 is fixedly connected to the edge of the sieve plate 5, one side of the cooling layer 61 is communicated with the induced draft duct 7 of the semi-coke drying kiln, so that the hot gas in the kiln body 1 is buffered in the sealed space formed by the cooling layer 61 and the sieve plate 5 after being sucked by the induced draft fan 4 and then enters the bag-type dust collector 3, the top and the side of the cooling layer 61 are hollow, the top of the cooling layer 61 is communicated with the induced draft duct 7 on the same side through an air extraction duct 62, the air extraction duct 62 is connected with the air extractor 63, the air extractor 63 is connected with the circulating cold air fan 64 through a duct, the circulating cold air fan 64 is connected with an air outlet duct 65, the air outlet duct 65 is communicated with the side of the cooling layer 61 away from the induced draft duct 7, the air extraction duct 62 and the air outlet duct 65 are located on opposite sides of the cooling layer 61, the air extractor 63 extracts the airflow in the cooling layer 61 to the circulating cold air fan 64 for cooling and then blows back into the cooling layer 61, so that the airflow in the cooling layer 61 is always at a low temperature, so as to cool the hot gas flow in the sealed space formed by the cooling layer 61 and the sieve plate 5, and avoid the damage of high-temperature particles to the bag again.
[0026] The use principle of the utility model is that: the hot blast stove 2 provides heat for combustion, the semi-coke in the kiln body 1 is dried, the induced draft fan 4 works, the hot gas flow is extracted to the bag-type dust collector 3 through the induced draft duct 7, in this process, the hot gas flow is first blocked by the sieve plate 5, the larger particles are blocked in the kiln body 1, avoiding entering the bag-type dust collector 3, the hot gas flow stays in the space formed by the sieve plate 5 and the cooling layer 61 and is cooled by the cold airflow in the cooling layer 61, then enters the air extraction duct 62, avoiding the adverse effects of high-temperature particles on the bag, the cold gas in the cooling layer 61 absorbs heat and the temperature rises, the air extractor 63 works, the airflow with the rising temperature is extracted to the circulating cold air fan 64 for cooling, and the circulating cold air fan 64 is connected with the air outlet duct 65, the air outlet duct 65 is communicated with the side of the cooling layer 61 away from the induced draft duct 7, the air extraction duct 62 and the air outlet duct 65 are located on opposite sides of the cooling layer 61, the air extractor 63 extracts the airflow in the cooling layer 61 to the circulating cold air fan 64 for cooling and then blows back into the cooling layer 61, so that the airflow in the cooling layer 61 is always at a low temperature, so as to cool the hot gas flow in the sealed space formed by the cooling layer 61 and the sieve plate 5, and avoid the damage of high-temperature particles to the bag again.
[0027] The above embodiment of the utility model is described in detail, but the content is only the preferred embodiment of the utility model and cannot be considered as limiting the scope of the utility model. Any equivalent changes and improvements within the scope of the utility model application should still belong to the patent coverage range of the utility model.
Claims
1. A device for improving the safety and production efficiency of a semi-coke drying kiln, which is arranged on a semi-coke drying kiln and is characterized in that: The invention comprises a sieve plate (5) and a cooling component (6), wherein the sieve plate (5) is fixed on the top of the kiln body (1) of the semi-coke drying kiln, and the cooling component (6) is fixedly connected to the sieve plate (5), and the sieve plate (5) is provided with a plurality of sieve holes. The cooling component (6) comprises a cooling layer (61), an exhaust fan (63) and a circulating cooling fan (64); the cooling layer (61) is fixedly connected to the sieve plate (5); one side of the cooling layer (61) is connected to the air duct (7) of the blue charcoal drying kiln; the top side of the cooling layer (61) is connected to an exhaust duct (62); the exhaust duct (62) is connected to the exhaust fan (63); the exhaust fan (63) is connected to the circulating cooling fan (64); the air outlet of the circulating cooling fan (64) is connected to an air outlet duct (65); the air outlet duct (65) is connected to the side of the cooling layer (61) facing away from the air duct (7).
2. The device for improving the safety and production efficiency of a semi-coke drying kiln according to claim 1, characterized in that: The air exhaust duct (62) and the air outlet duct (65) are located on opposite sides of the cooling layer (61).
3. The device for improving the safety and production efficiency of a semi-coke drying kiln according to claim 1, characterized in that: The outer ring of the sieve plate (5) does not have the sieve holes, and the inner ring of the sieve plate (5) has a plurality of the sieve holes evenly arranged thereon.
4. A device for improving the safety and production efficiency of a semi-coke drying kiln according to claim 1 or 3, characterized in that: The opening area of the sieve plate (5) is larger than the cross-sectional area of the air duct (7).
5. The device for improving the safety and production efficiency of a semi-coke drying kiln according to claim 4, characterized in that: The opening area of the sieve holes is 100 mm away from the edge of the sieve plate (5), the sieve hole diameter is 10 mm, and the center spacing of the sieve holes is 20 mm.