CN212274657U - High-efficient alloy roaster of preheating-type - Google Patents
High-efficient alloy roaster of preheating-type Download PDFInfo
- Publication number
- CN212274657U CN212274657U CN202021839751.XU CN202021839751U CN212274657U CN 212274657 U CN212274657 U CN 212274657U CN 202021839751 U CN202021839751 U CN 202021839751U CN 212274657 U CN212274657 U CN 212274657U
- Authority
- CN
- China
- Prior art keywords
- preheating
- gas
- air
- cavity
- alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a preheating type high-efficiency alloy roaster, which belongs to the field of steel-making equipment and relates to the alloy roasting technology, comprising a gas preheating mechanism, an alloy roasting mechanism and a tail gas recovery mechanism, wherein the gas preheating mechanism comprises a gas preheating cavity, an air preheating cavity, a gas conveying pipeline connected with the gas preheating cavity and an air conveying pipeline connected with the air preheating cavity; the alloy baking mechanism comprises a combustion chamber, an igniter arranged in the combustion chamber and a preheating bin arranged above the combustion chamber; the tail gas recovery mechanism comprises a recovery cover, a tail gas conveying pipe communicated with the recovery cover and a plate heat exchanger communicated with the tail gas conveying pipe; the gas preheating cavity and the air preheating cavity are wrapped on the outer wall of the preheating bin, the combustion chamber is connected with the gas conveying pipeline and the air conveying pipeline, and the recovery cover is arranged above the preheating bin. The alloy preheating device can efficiently and comprehensively preheat alloy, has the advantages of energy conservation and emission reduction, and is simple in structure and convenient to operate.
Description
Technical Field
The utility model belongs to the steelmaking equipment field relates to the alloy and toasts the technique, concretely relates to high-efficient alloy roaster of preheating-type.
Background
In both converter steelmaking and electric furnace electro-steel, in order to deoxidize molten steel or to make steel have certain characteristics and meet certain requirements, alloy is usually added into steel, so that the smelting requirements can be met quickly and efficiently.
At present, if cold alloy is directly filled into a furnace and a ladle, the following three problems occur, namely 1 alloy is easy to be affected with damp in storage, H is easy to increase in steel, and a casting blank is easy to generate white spots so that the steel becomes brittle; 2, after the cold alloy is added, a large amount of heat is absorbed, so that the tapping temperature of a converter or an electric furnace needs to be increased to make up for the temperature drop of alloying, the quality of molten steel is deteriorated, and the smelting pressure is increased; 3 the direct addition of cold alloy into the molten steel easily causes the molten steel to splash, causes iron loss and increases the operation danger. The alloy roaster at the present stage can hardly control the temperature of the outer wall of the roaster, so that the service life of the roaster is greatly reduced. And secondly, tail gas after combustion is not treated at all, so that real energy conservation and emission reduction cannot be realized, and the alloy is baked only on the surface of the storage bin, so that the alloy in the storage bin cannot be effectively preheated.
SUMMERY OF THE UTILITY MODEL
For solving exist not enough among the prior art, the utility model provides a high-efficient alloy roaster of preheating-type can be high-efficient comprehensive preheating alloy to have energy saving and emission reduction's advantage, simple structure, convenient operation.
The utility model discloses a solve the technical scheme that its technical problem adopted and be: a preheating type efficient alloy roaster comprises a gas preheating mechanism, an alloy roasting mechanism and a tail gas recovery mechanism, wherein the gas preheating mechanism comprises a gas preheating cavity, an air preheating cavity, a gas conveying pipeline connected with the gas preheating cavity and an air conveying pipeline connected with the air preheating cavity; the alloy baking mechanism comprises a combustion chamber, an igniter arranged in the combustion chamber and a preheating bin arranged above the combustion chamber; the tail gas recovery mechanism comprises a recovery cover, a tail gas conveying pipe communicated with the recovery cover and a plate heat exchanger communicated with the tail gas conveying pipe; the gas preheating cavity and the air preheating cavity are wrapped on the outer wall of the preheating bin, the combustion chamber is connected with the gas conveying pipeline and the air conveying pipeline, and the recovery cover is arranged above the preheating bin.
Further, the coal gas preheating cavity comprises an upper coal gas cavity and a lower coal gas cavity, and the upper coal gas cavity and the lower coal gas cavity are communicated through an inter-cavity connecting pipeline; the air preheating cavity comprises an upper air cavity and a lower air cavity, and the upper air cavity and the lower air cavity are communicated through a connecting pipeline between the other cavities.
Further, the lower gas cavity is connected with a gas inlet valve, and the lower gas cavity is connected with an air inlet valve; the upper gas cavity is connected with one end of a gas outlet valve, and the upper gas cavity is connected with one end of an air outlet valve.
Furthermore, the other end of the gas outlet valve is connected with a gas conveying pipeline, and the other end of the air outlet valve is connected with an air conveying pipeline.
Furthermore, the top of the combustion chamber is connected with a vent valve, the vent valve is connected with the bottom of the preheating bin, one end of the gas conveying pipeline and one end of the air conveying pipeline are respectively communicated with the bottom of the combustion chamber, and the other end of the gas conveying pipeline and the other end of the air conveying pipeline are respectively connected with a gas outlet valve and an air outlet valve.
Further, the recovery cover is of a pot cover type structure made of Q235 steel, the top of the recovery cover is communicated with one end of a tail gas conveying pipe, the other end of the tail gas conveying pipe is connected with one end of a plate heat exchanger, and the other end of the plate heat exchanger is connected with a tail gas degradation tank; the plate heat exchanger is arranged between the outer wall of the gas outlet valve and the outer wall of the air outlet valve.
Furthermore, the side wall of the preheating bin is made of a fireproof material, and the side walls of the gas preheating cavity and the air preheating cavity are made of heat insulation cotton.
Furthermore, the ventilation door is composed of ventilation bricks, and a rotary screw a is arranged at the joint of the ventilation door and the bottom of the preheating bin.
Furthermore, a rotary screw b is arranged at the joint of the recovery cover and the preheating bin.
The beneficial effects of the utility model include at least: the gas and the air are preheated in a staggered manner, so that the temperature of the gas and the air before combustion can be increased, the preheated gas and the preheated air enter a combustion chamber for combustion, and the temperature of the outer wall of the preheating bin is reduced; the bottom of the preheating bin is combusted by using coal gas, the hot gas automatically rises and penetrates through the whole alloy material, and the alloy is efficiently and comprehensively preheated; set up tail gas recovery unit, adopt plate heat exchanger to continue preheating coal gas and air with the heat of tail gas, use tail gas degradation jar to carry out pollution-free processing to last low temperature tail gas to accomplish energy-conservation, efficient and toast the alloy. The whole device is simple in structure, convenient to operate and convenient to maintain.
Drawings
Fig. 1 is a schematic sectional structure of the present invention.
The reference numbers in the figures are as follows: 1. the preheating device comprises a preheating bin, 2, a gas inlet valve, 3, an air inlet valve, 4, a lower gas cavity, 5, a lower gas cavity, 6, an inter-cavity connecting pipeline, 7, a gas outlet valve, 8, an air outlet valve, 9, a gas conveying pipeline, 10, an air conveying pipeline, 11, a combustion chamber, 12, an igniter, 13, a vent door, 14, rotary screws a, 15, a recovery cover, 16, a tail gas conveying pipeline, 17, a plate type heat exchanger, 18, a tail gas degradation tank, 19, an upper gas cavity, 20, an upper gas cavity, 21 and rotary screws b.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Example 1
A preheating type efficient alloy roaster comprises a gas preheating mechanism, an alloy roasting mechanism and a tail gas recovery mechanism, wherein the gas preheating mechanism comprises a gas preheating cavity, an air preheating cavity, a gas conveying pipeline 9 and an air conveying pipeline 10; the coal gas preheating cavity comprises an upper coal gas cavity 19 and a lower coal gas cavity 4, and the upper coal gas cavity 19 is communicated with the lower coal gas cavity 4 through an inter-cavity connecting pipeline 6; the air preheating cavity comprises an upper air cavity 20 and a lower air cavity 5, and the upper air cavity 20 and the lower air cavity 5 are communicated through another cavity connecting pipeline 6.
The lower gas cavity 4 is connected with the gas inlet valve 2, and the lower gas cavity 5 is connected with the air inlet valve 3; the upper gas cavity 19 is connected with one end of a gas outlet valve 7, and the other end of the gas outlet valve 7 is connected with a gas conveying pipeline 9; the upper air cavity 20 is connected with one end of an air outlet valve 8, and the other end of the air outlet valve 8 is connected with an air conveying pipeline 10.
The alloy baking mechanism comprises a combustion chamber 11, an igniter 12 arranged in the combustion chamber 11 and a preheating bin 1; the top of the combustion chamber 11 is connected with a vent door 13 formed by vent bricks, and the vent door 13 is connected with the bottom of the preheating bin 1, so that the whole combustion chamber 11 is positioned under the preheating bin 1; one end of the gas conveying pipeline 9 and one end of the air conveying pipeline 10 are respectively communicated with the bottom of the combustion chamber 11, and the other ends of the gas conveying pipeline and the air conveying pipeline are respectively connected with the gas outlet valve 7 and the air outlet valve 8. The preheated coal gas and air enter the combustion chamber 11 for combustion, the obtained hot gas automatically rises and penetrates through the whole alloy material, and the alloy is efficiently and comprehensively preheated.
The tail gas recovery mechanism comprises a recovery cover 15, a tail gas conveying pipe 16 and a plate type heat exchanger 17; the recovery cover 15 is of a Q235 steel pot cover type structure and is arranged above the preheating bin 1, the top of the recovery cover is communicated with one end of a tail gas conveying pipe 16, the other end of the tail gas conveying pipe 16 is connected with one end of a plate type heat exchanger 17, and the other end of the plate type heat exchanger 17 is connected with a tail gas degradation tank 18; the plate heat exchanger 17 is arranged between the outer wall of the coal gas outlet valve 7 and the outer wall of the air outlet valve 8. Therefore, the tail gas after alloy preheating can be completely recycled, and the waste heat of the tail gas is used for preheating the coal gas and the air before combustion again. The tail gas degradation tank 18 can effectively recover the residual heat of the redundant tail gas and degrade harmful substances in the tail gas.
Preferably, the preheating bin 1 is of a funnel-shaped structure with a large upper part and a small lower part, and the side wall of the preheating bin is made of refractory materials; the side walls of the gas preheating cavity and the air preheating cavity are made of heat insulation cotton, so that the temperature of the outer walls of the gas preheating cavity and the air preheating cavity can be controlled to be lower than 60 ℃, and the service life is prolonged. The coal gas preheating cavity and the air preheating cavity are wrapped on the outer wall of the preheating bin 1, so that the preheating temperature of the preheating bin 1 can be transmitted to the coal gas preheating cavity and the air preheating cavity through refractory materials, coal gas and air are further preheated, and the temperature of the coal gas and the air before combustion is improved.
As a preferable scheme capable of realizing the horizontal rotation of the combustion chamber 11, a rotary screw a14 is provided at the connection position of the ventilation door 13 and the bottom of the preheating chamber 1. As a preferable scheme capable of realizing the horizontal rotation of the recovery cover 15, a rotary screw b21 is provided at the connection part of the recovery cover 15 and the preheating bin 1.
When the preheating bin is used, the temperature of the coal gas and the air before combustion can be increased and the temperature of the outer wall of the preheating bin 1 can be reduced by adding the refractory material interlayer on the outer wall of the preheating bin 1 and alternately preheating the coal gas and the air; the bottom of the preheating bin 1 is burnt by coal gas, hot gas automatically rises and penetrates through the whole alloy material, and the alloy is preheated efficiently and comprehensively; and finally, a tail gas recovery mechanism is arranged, the heat of the tail gas is continuously preheated by adopting a plate heat exchanger 17, and the tail gas degradation tank 18 is used for carrying out pollution-free treatment on the final low-temperature tail gas, so that the alloy can be roasted with energy conservation and high efficiency, and the alloy roasting requirement is met.
The above description is only the specific implementation manner of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the design of the present invention within the technical scope of the present invention.
Claims (9)
1. The preheating type efficient alloy roaster is characterized by comprising a gas preheating mechanism, an alloy roasting mechanism and a tail gas recovery mechanism, wherein the gas preheating mechanism comprises a gas preheating cavity, an air preheating cavity, a gas conveying pipeline (9) connected with the gas preheating cavity and an air conveying pipeline (10) connected with the air preheating cavity; the alloy baking mechanism comprises a combustion chamber (11), an igniter (12) arranged in the combustion chamber (11) and a preheating bin (1) arranged above the combustion chamber (11); the tail gas recovery mechanism comprises a recovery cover (15), a tail gas conveying pipe (16) communicated with the recovery cover (15), and a plate type heat exchanger (17) communicated with the tail gas conveying pipe (16); the coal gas preheating cavity and the air preheating cavity are wrapped on the outer wall of the preheating bin (1), the combustion chamber (11) is connected with the coal gas conveying pipeline (9) and the air conveying pipeline (10), and the recovery cover (15) is installed above the preheating bin (1).
2. The preheating-type efficient alloy roaster according to claim 1, wherein the gas preheating chamber comprises an upper gas chamber (19) and a lower gas chamber (4), the upper gas chamber (19) and the lower gas chamber (4) are communicated through an inter-chamber connecting pipe (6); the air preheating cavity comprises an upper air cavity (20) and a lower air cavity (5), and the upper air cavity (20) is communicated with the lower air cavity (5) through a connecting pipeline (6) between the other cavities.
3. The preheating type high-efficiency alloy roaster according to claim 2, wherein the lower air chamber (4) is connected with the air inlet valve (2), and the lower air chamber (5) is connected with the air inlet valve (3); the upper gas cavity (19) is connected with one end of a gas outlet valve (7), and the upper gas cavity (20) is connected with one end of an air outlet valve (8).
4. The preheating type high-efficiency alloy roaster according to claim 3, wherein the other end of the gas outlet valve (7) is connected with a gas conveying pipeline (9), and the other end of the air outlet valve (8) is connected with an air conveying pipeline (10).
5. The preheating type high-efficiency alloy roaster according to claim 1, wherein the top of the combustion chamber (11) is connected with a vent door (13), the vent door (13) is connected with the bottom of the preheating chamber (1), one end of the gas conveying pipeline (9) and one end of the air conveying pipeline (10) are respectively communicated with the bottom of the combustion chamber (11), and the other end of the gas conveying pipeline and the other end of the air conveying pipeline are respectively connected with the gas outlet valve (7) and the air outlet valve (8).
6. The preheating-type efficient alloy roaster according to claim 1, wherein the recovery cover (15) is of a pot cover type structure made of Q235 steel, the top of the recovery cover is communicated with one end of the tail gas conveying pipe (16), the other end of the tail gas conveying pipe (16) is connected with one end of the plate heat exchanger (17), and the other end of the plate heat exchanger (17) is connected with the tail gas degradation tank (18); the plate heat exchanger (17) is arranged between the outer wall of the gas outlet valve (7) and the outer wall of the air outlet valve (8).
7. The preheating-type efficient alloy roaster according to claim 1, wherein the sidewall of the preheating chamber (1) is made of refractory material, and the sidewall of the gas preheating chamber and the air preheating chamber is made of heat-insulating cotton.
8. The preheating-type efficient alloy roaster according to claim 5, wherein the vent door (13) is made of vent bricks, and a rotary screw a (14) is arranged at the joint of the vent door (13) and the bottom of the preheating bin (1).
9. The preheating-type efficient alloy roaster according to claim 1, wherein a rotary screw b (21) is arranged at the joint of the recovery cover (15) and the preheating bin (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021839751.XU CN212274657U (en) | 2020-08-28 | 2020-08-28 | High-efficient alloy roaster of preheating-type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021839751.XU CN212274657U (en) | 2020-08-28 | 2020-08-28 | High-efficient alloy roaster of preheating-type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212274657U true CN212274657U (en) | 2021-01-01 |
Family
ID=73870296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021839751.XU Active CN212274657U (en) | 2020-08-28 | 2020-08-28 | High-efficient alloy roaster of preheating-type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212274657U (en) |
-
2020
- 2020-08-28 CN CN202021839751.XU patent/CN212274657U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100427865C (en) | Electric calcining furnace of using volatile and electric calcining method | |
| CN201397032Y (en) | Continuous aluminum melting holding furnace | |
| CN107779543B (en) | A kind of device and application method using converter slag waste heat preheating scrap and alloy | |
| CN106766891A (en) | A kind of aluminium melting furnace burning and EGR | |
| CN108411064A (en) | The method of waste steel for electric furnace preheating | |
| CN101457305B (en) | Double-burning and double thermal heat storing type energy-saving high efficiency furnace and tank integrated reducing furnace system | |
| CN212274657U (en) | High-efficient alloy roaster of preheating-type | |
| CN111964459A (en) | Preheating type alloy baking device | |
| CN207655905U (en) | A kind of online apparatus for baking of hot-metal bottle | |
| CN206648480U (en) | A kind of lithium battery atmosphere furnace energy saving circulating system | |
| CN105466212A (en) | Vertical heat exchange type alloy baking oven system | |
| CN101164871B (en) | Improved cooling discharging Slapple activating furnace | |
| CN212902588U (en) | Energy-saving roasting furnace | |
| CN211101577U (en) | Device for preheating scrap steel on line in hot metal ladle | |
| CN204724842U (en) | A kind of online ladle accumulation of heat roaster | |
| CN110285671B (en) | Aluminum scrap smelting system | |
| CN206616254U (en) | A kind of red copper production continuous annealing furnace | |
| CN112985082A (en) | Oxygen combustion-supporting combined type steel ladle baking device and method | |
| CN103100702A (en) | Hot metal ladle baking method | |
| CN203083381U (en) | Feeding tower capable of recycling waste heat of aluminum alloy melting furnace | |
| CN213772134U (en) | Energy-saving automatic temperature control heat accumulation burner type trolley furnace | |
| CN218511509U (en) | Non-ferrous metal smelting device | |
| CN205580194U (en) | High -efficient founding stove | |
| CN217424002U (en) | Vertical steel scrap baking and hot charging integrated device | |
| CN208178404U (en) | A kind of scrap steel preheating heat preservation backpack cover |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |