Special-proportion combustion accelerant adding device for smelting triple furnace
By installing nozzles and piping systems in the side-blown furnace and fuming furnace systems of the smelting triple furnace, and using combustion accelerator solutions with different addition points and concentration ratios, the problem of incomplete combustion was solved, achieving efficient addition of combustion accelerators and improved energy utilization.
Patent Information
- Application Number
- CN202520253925.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-02-18
AI Technical Summary
The existing technology has defects in the location and method of adding combustion promoters, which leads to incomplete combustion, low energy utilization, and energy waste.
A combustion accelerator addition device with a special ratio for a smelting triple furnace is designed. By setting up nozzles and pipeline systems in the side-blown furnace system and the fuming furnace system, and using combustion accelerator solutions with different addition points and concentration ratios, combined with micro-droplet multi-point sprinkler nozzles, the uniform distribution and efficient addition of the combustion accelerator can be achieved.
It improves the utilization rate of combustion promoters, enhances combustion efficiency, reduces the impact of moisture on pulverized coal, and achieves more efficient energy utilization and easier equipment installation.
Smart Images
Figure CN223755787U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of metal smelting technology relates to a special proportion's combustion accelerator adding device for smelting three -in -one furnace. BACKGROUND
[0002] The main application range of three -in -one smelting furnace is in the metal smelting process, and three -in -one furnace technology shows its efficient, environmental protection and the characteristics of the characteristics. And most of the coal-fired power plant enterprises, smelting three -in -one furnace also faces the problem of coal combustion burnout rate, and the insufficient combustion of raw coal not only causes the waste of energy materials, but also brings certain hidden danger to the safe and stable operation of smelting furnace. In order to solve the problem of insufficient coal combustion and low energy utilization rate, more and more smelting enterprises choose to use additives to solve similar problems. As the preferred product for promoting raw coal combustion, improving the burnout rate of coal and improving the utilization rate of energy, combustion accelerator is also more widely applied. The previous adding mode is mostly fixed position, fixed dose, fixed proportion, and the specific position of adding is not specifically required, although it can achieve the purpose of promoting combustion to a certain extent, but it cannot realize the maximum efficiency, thereby leading to the waste of energy resources. CONTENT OF THE UTILITY MODEL
[0003] The utility model aims at providing a special proportion's combustion accelerator adding device for smelting three -in -one furnace to solve the technical problem of insufficient utilization of combustion accelerator caused by the defects of adding position and adding mode in the prior art.
[0004] The special proportion's combustion accelerator adding device for smelting three -in -one furnace, including the storage liquid container of storage combustion accelerator, liquid pump and spray head, the spray head is equipped with several and is divided in the side blown furnace system and the fuming furnace system, the spray head in the side blown furnace system is connected to the storage liquid container through the first pipe system, the spray head of the fuming furnace system is connected to the storage liquid container through the second pipe system, the first pipe system and the second pipe system are equipped with the liquid pump and the adjusting valve for controlling the liquid amount of each spray head.
[0005] Preferably, the side blown furnace system sequentially includes a side blown furnace coal storage yard, a side blown furnace transfer bin and a side blown furnace, the coal storage yard is connected to the transfer bin inlet through a side blown furnace yard belt, and the side blown furnace transfer bin is sequentially connected to the side blown furnace through a plurality of side blown furnace transfer belts and a side blown furnace into the furnace belt.
[0006] Preferably, the side blown furnace system is provided with an adding point, and each adding point is provided with at least one spray head; the adding point includes one, two or more of the discharge port of the side blown furnace coal storage yard, the discharge port of the side blown furnace transfer bin, each side blown furnace transfer belt and the side blown furnace into the furnace belt.
[0007] Preferably, the coking furnace system sequentially comprises a coking furnace raw coal yard, a coking furnace yard belt, a coking furnace coal bunker, an out-of-bunker belt, a coal feeding bucket elevator, a coking furnace coal bin, a raw coal coal mill, a coal powder classifier, a raw coal coal powder bin, a coal powder transfer bin, a coal powder into-furnace pipeline and a coking furnace, the coking furnace raw coal yard is connected to the coking furnace coal bunker through the coking furnace yard belt, and the coking furnace coal bunker is connected to the coking furnace coal bin through the out-of-bunker belt and the coal feeding bucket elevator.
[0008] Preferably, the coking furnace system is provided with adding points, each adding point is provided with at least one of the spray heads; the adding points comprise one, two or more of a discharge port of the coking furnace raw coal yard, the coking furnace yard belt, a discharge port of the coking furnace coal bunker, the out-of-bunker belt, a discharge end of the coal feeding bucket elevator, an output pipeline on the coking furnace coal bin, a feeding port of the coal powder classifier and the coal powder into-furnace pipeline.
[0009] Preferably, the liquid storage container has two, and the concentrations of the solutions in the two liquid storage containers are different, one liquid storage container is connected to the first pipeline system, and the other liquid storage container is connected to the second pipeline system.
[0010] Preferably, the spray head adopts a micro-droplet multi-point shower head.
[0011] Preferably, the solution in the liquid storage container directly uses 100% of a mother liquor of the combustion accelerator or is mixed by the mother liquor of the combustion accelerator and water, and when the solution in the liquid storage container is mixed by the mother liquor of the combustion accelerator and water, the ratio of the mother liquor of the combustion accelerator to water ranges from 1:1 to 3.
[0012] The utility model has the following advantages: the utility model sets the adding device of the combustion accelerator in the side-blown furnace system and the coking furnace system, realizes the reasonable adding of the combustion accelerator, the combustion accelerator can be fully stirred and uniformly distributed after adding, and the product performance of the combustion accelerator is improved and stabilized.
[0013] The scheme also provides different combustion accelerator concentration ratios (by mixing the mother liquor and water) and suitable spray head types when adding at different adding points in the side-blown furnace system and the coking furnace system, which makes the adding of the combustion accelerator at the corresponding positions have a good combustion promotion effect and reduces the influence of water input on the combustion of the fuel such as the coal powder. Finally, the scheme also provides specific ways of adding the combustion accelerator in the side-blown furnace system and the coking furnace system, thereby realizing better combustion promotion effect for the three-in-a-row smelting furnace system and overcoming the defects of the traditional adding device. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 The utility model relates to a special proportion combustion promoter adding device for smelting three continuous furnaces.
[0015] Figure 2 The utility model discloses a structure diagram of a side-blown furnace system.
[0016] Figure 3 The utility model discloses a structure diagram of a fuming furnace system.
[0017] The reference signs in the drawings are as follows: 1, liquid storage container, 2, first pipeline system, 3, second pipeline system, 4, spray head, 5, infusion pump, 6, side-blown furnace, 7, fuming furnace, 8, side-blown furnace coal storage yard, 9, side-blown furnace yard belt, 10, side-blown furnace transfer bin, 11, side-blown furnace transfer belt, 12, side-blown furnace into furnace belt, 13, fuming furnace raw coal yard, 14, fuming furnace yard belt, 15, fuming furnace coal bunker, 16, out-of-bunker belt, 17, coal conveying bucket elevator, 18, fuming furnace coal bin, 19, raw coal coal mill, 20, coal powder powder selecting machine, 21, raw coal coal powder bin, 22, coal powder transfer bin, 23, coal powder into furnace pipeline. DETAILED DESCRIPTION
[0018] The utility model discloses a structure diagram of a side-blown furnace system.
[0019] As Figures 1-3 The utility model discloses a special proportion combustion promoter adding device for smelting three continuous furnaces, in full research and combination smelting three continuous furnace's technological characteristics, the present application chooses and drops combustion promoter in the side-blown furnace system and fuming furnace system of raw coal use. In the analysis and avoid the unreasonable aspect of traditional adding mode, the adding mode and adding combination of combustion promoter in three continuous smelting furnaces are designed specifically, and then the deficiency of traditional adding mode is improved.
[0020] The smelting three-in-line furnace includes a side-blown furnace 6, a bottom-blown furnace and a fuming furnace 7, the combustion promoter adding device includes a liquid storage container 1 for storing the combustion promoter, a liquid delivery pump 5 and a plurality of spray heads 4 arranged in the side-blown furnace system and the fuming furnace system, the spray heads 4 in the side-blown furnace system are connected to the liquid storage container 1 through a first pipeline system 2, the spray heads 4 in the fuming furnace system are connected to the liquid storage container 1 through a second pipeline system 3, the first pipeline system 2 and the second pipeline system 3 are both provided with the liquid delivery pump 5 and an adjusting valve for controlling the liquid spraying amount of each spray head 4. The spray head 4 can be a micro-droplet multi-point shower head 4, which can ensure uniform addition even when the addition amount is small. The combustion promoter in the liquid storage container 1 is mixed by a mother liquor of the combustion promoter and water.
[0021] The side-blown furnace system sequentially includes a side-blown furnace coal storage yard 8, a side-blown furnace transfer bin 10 and a side-blown furnace 6, the coal storage yard is connected to the transfer bin through a side-blown furnace yard belt 9, and the side-blown furnace transfer bin 10 is sequentially connected to the side-blown furnace 6 through a plurality of side-blown furnace transfer belts 11 and a side-blown furnace charging belt 12. In this embodiment, the side-blown furnace transfer belts 11 are sequentially connected by four belts from the outlet of the transfer bin to the side-blown furnace charging belt 12, which are a first belt, a second belt, a third belt and a fourth belt. The side-blown furnace system is provided with an adding point, and each adding point is provided with at least one spray head 4. The adding point includes one, two or more of the discharge outlet of the side-blown furnace coal storage yard 8, the discharge outlet of the side-blown furnace transfer bin 10, each side-blown furnace transfer belt 11 and the side-blown furnace charging belt 12.
[0022] The discharge outlet of the side-blown furnace coal storage yard 8 and the discharge outlet of the side-blown furnace yard belt 9 are provided with the spray head 4 for spraying the combustion promoter, and the ratio of the mother liquor of the combustion promoter to water is 1:3. The main reason is that the coal amount is large during the coal feeding, and the combustion promoter diluted by a large ratio can be better distributed in the raw coal. The combustion promoter can also be fully stirred and uniformly distributed during the coal transfer. The combustion promoter has been transported for many times during the charging and burning, and is basically uniformly distributed, thereby improving and stabilizing the product performance of the combustion promoter.
[0023] The discharge outlet of the side-blown furnace transfer bin 10 and each side-blown furnace transfer belt 11 are provided with the spray head 4 for spraying the combustion promoter, and the ratio of the mother liquor of the combustion promoter to water is less than or equal to 1:2. In this way, the water evaporation consumption heat after charging can be reduced, and since the whole material flow line from the side-blown furnace transfer belt 11 to the charging stage is relatively long, the addition of the combustion promoter in this ratio range facilitates the selection of the installation position of the appropriate equipment and the pipeline layout.
[0024] The side-blown furnace inlet belt 12 is provided with a spray head 4 for spraying combustion accelerant. The ratio of the mother liquor of the combustion accelerant to water is equal to 1:2, and the spray head 4 is a micro-droplet multi-point shower head 4. This design can help achieve the purpose of better fusion of the combustion accelerant and raw coal in a shorter distance.
[0025] If the adding points are two, which are the side-blown furnace transfer belt 11 discharge port and the side-blown furnace inlet belt 12, and the combustion accelerant is added in a simultaneous adding mode, the spray heads 4 at the two adding points add 50% of the total amount of the combustion accelerant, and the ratio of the mother liquor of the combustion accelerant to water in the liquid storage container 1 is 1:2. This adding mode can combine the advantages of the two adding modes to achieve better results.
[0026] The fuming furnace system sequentially comprises a fuming furnace raw coal yard 13, a fuming furnace yard belt 14, a fuming furnace coal bunker 15, an out-of-bunker belt 16, a coal bucket elevator 17, a fuming furnace coal bin 18, a raw coal mill 19, a coal powder classifier 20, a raw coal powder bin 21, a coal powder transfer bin 22, a coal powder inlet pipe 23, and a fuming furnace 7. The fuming furnace raw coal yard 13 is connected to the fuming furnace coal bunker 15 through the fuming furnace yard belt 14, and the fuming furnace coal bunker 15 is connected to the fuming furnace coal bin 18 through the out-of-bunker belt 16 and the coal bucket elevator 17. The fuming furnace system is provided with adding points, and each adding point is provided with at least one spray head 4. The adding points include the discharge port of the fuming furnace raw coal yard 13, the fuming furnace yard belt 14, the discharge port of the fuming furnace coal bunker 15, the out-of-bunker belt 16, the discharge end of the coal bucket elevator 17, the output pipe on the fuming furnace coal bin 18, one, two or more of the inlet of the coal powder classifier 20 and the coal powder inlet pipe 23.
[0027] The combustion accelerant in the liquid storage container 1 is mixed by the mother liquor of the combustion accelerant and water. If the adding point is located in the area between the fuming furnace raw coal yard 13 and the raw coal mill 19, the ratio of the mother liquor of the combustion accelerant to water is 1:2. Here, a higher concentration ratio is used to reduce the input of water to prevent affecting the quality of the coal powder.
[0028] If the adding point is located in the area between the coal powder classifier 20 and the coal powder transfer bin 22, the ratio of the mother liquor of the combustion accelerant to water is less than or equal to 1:2. Because the powder material is mixed with air in this section when conveying the coal powder, the water input should be reduced to some extent to ensure smooth flow.
[0029] If the adding point is arranged in the area between the coal powder transfer bin 22 and the flue furnace 7, the adding is directly performed using 100% of the mother liquor of the combustion accelerator. Mainly because the area is the air-coal mixing area, and the material flow rate is large, the combustion accelerator can be uniformly distributed, the water input is reduced, and the evaporation heat consumption is also reduced.
[0030] The combined adding mode in the flue furnace system can achieve better results, and generally two adding points are arranged at a proportion of 50% respectively. In the embodiment, the two adding points are arranged in the area between the coal pile 13 of the flue furnace and the coal bucket elevator 17 and the area between the coal powder transfer bin 22 and the flue furnace 7 respectively, the spray heads 4 at the two adding points are added at a proportion of 50% of the total adding amount, and the proportion of the mother liquor of the combustion accelerator and water is 1:3. In this way, the uniformity of the mixed agent, the water mixing, and the installation simplicity of the equipment are all obviously improved.
[0031] In addition, the scheme can also add the combustion accelerator in the side-blown furnace system, and simultaneously add the combustion accelerator in the flue furnace system downstream of the side-blown furnace system, and the proportion of the mother liquor of the combustion accelerator and water is 1:3. The material can be fully stirred in long-distance transportation. Through the intelligent dripping control device and the corresponding valve group in the system, the system can also meet the requirement of simultaneously dripping at four points. The system can also automatically mix two kinds of solution concentrations, that is, two liquid storage containers 1 are used to store combustion accelerators with different concentrations, and the two liquid storage containers 1 are used to supply the combustion accelerators with corresponding concentrations to the spray heads 4 of different adding points, for example, one liquid storage container 1 is connected with the first pipeline system 2, and the other liquid storage container 1 is connected with the second pipeline system 3, as shown in the figure. Figure 1 The system has higher accuracy and controllability than the traditional device by using the adding device with sufficient accuracy and the corresponding valve group.
[0032] The utility model has been described above in combination with the drawings, and obviously, the specific implementation of the utility model is not limited by the above mode, as long as various non-essential improvements are made by using the inventive concept and technical scheme of the utility model, or the inventive concept and technical scheme are directly applied to other occasions without improvement, all of which are within the protection scope of the utility model.
Claims
1. A special proportioning combustion promoter addition device for a three- hearth smelting furnace, characterized in that: The system comprises a liquid storage container (1) for storing combustion accelerant, a liquid delivery pump (5) and a plurality of spray heads (4) arranged in a side-blown furnace system and a fuming furnace system, the spray heads (4) in the side-blown furnace system are connected to the liquid storage container (1) through a first pipe system (2), the spray heads (4) in the fuming furnace system are connected to the liquid storage container (1) through a second pipe system (3), and the first pipe system (2) and the second pipe system (3) are both provided with the liquid delivery pump (5) and regulating valves for controlling the liquid delivery amount of each spray head (4).
2. A special proportioning combustion promoter addition device for a three-heat furnace according to claim 1, characterized in that: The side-blown furnace system comprises a side-blown furnace coal storage yard (8), a side-blown furnace transfer bin (10) and a side-blown furnace (6) in sequence, the side-blown furnace coal storage yard (8) is connected to the side-blown furnace transfer bin (10) through a side-blown furnace yard belt (9), and the side-blown furnace transfer bin (10) is connected to the side-blown furnace (6) through a plurality of side-blown furnace transfer belts (11) and a side-blown furnace entry belt (12) in sequence.
3. A specially proportioned combustion accelerator additive device for a three strand furnace as claimed in claim 2, wherein: The side-blown furnace system is provided with addition points, each of which is provided with at least one spray head (4); the addition points include one, two or more of the discharge port of the side-blown furnace coal storage yard (8), the discharge port of the side-blown furnace transfer bin (10), the side-blown furnace entry belt (12) and each of the side-blown furnace transfer belts (11).
4. A special proportioning combustion promoter addition device for a three-heat furnace according to claim 1, characterized in that: The fuming furnace system comprises a fuming furnace raw coal storage yard (13), a fuming furnace yard belt (14), a fuming furnace coal storage (15), an out-of-storage belt (16), a coal bucket elevator (17), a fuming furnace coal bin (18), a raw coal pulverizer (19), a coal powder classifier (20), a raw coal powder bin (21), a coal powder transfer bin (22), a coal powder entry pipe (23) and a fuming furnace (7) in sequence, and the fuming furnace raw coal storage yard (13) is connected to the fuming furnace coal storage (15) through the fuming furnace yard belt (14), and the fuming furnace coal storage (15) is connected to the fuming furnace coal bin (18) through the out-of-storage belt (16) and the coal bucket elevator (17).
5. A specially proportioned combustion accelerator additive device for a three strand furnace as claimed in claim 4, wherein: The fuming furnace system is provided with addition points, each of which is provided with at least one spray head (4); the addition points include one, two or more of the discharge port of the fuming furnace raw coal storage yard (13), the fuming furnace yard belt (14), the discharge port of the fuming furnace coal storage (15), the out-of-storage belt (16), the discharge end of the coal bucket elevator (17), the output pipe of the fuming furnace coal bin (18), the inlet of the coal powder classifier (20) and the coal powder entry pipe (23).
6. A special proportioning combustion promoter addition device for a three-heat furnace according to claim 1, characterized in that: The liquid storage container (1) has two, and the solution concentrations in the two liquid storage containers (1) are different, one liquid storage container (1) is connected to the first pipe system (2), and the other liquid storage container (1) is connected to the second pipe system (3).
7. A special proportioning combustion promoter addition device for a three-heat furnace according to claim 1, characterized in that: The spray head (4) is a micro-droplet multi-point shower head (4).
8. A special proportioning combustion promoter addition device for a three-heat furnace according to claim 1, characterized in that: The solution in the solution storage container (1) is directly used as 100% of the mother liquor of the combustion accelerator or is mixed with water, and when the solution in the solution storage container (1) is mixed with water, the ratio of the mother liquor of the combustion accelerator to water is in the range of 1:1 to 3.