CN201000061Y - Roasters special for steel-smelting ladle blast furnace gas - Google Patents
Roasters special for steel-smelting ladle blast furnace gas Download PDFInfo
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- CN201000061Y CN201000061Y CNU2006200118447U CN200620011844U CN201000061Y CN 201000061 Y CN201000061 Y CN 201000061Y CN U2006200118447 U CNU2006200118447 U CN U2006200118447U CN 200620011844 U CN200620011844 U CN 200620011844U CN 201000061 Y CN201000061 Y CN 201000061Y
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- gas
- blast furnace
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- steel
- furnace gas
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Abstract
The utility model discloses a coal gas special-purpose roaster for the steel making ladle high furnace with double preheating devices. The utility model solves the baking temperature problem which can't be satisfied by the high furnace coal gas with low heating value during the ladle baking process, during which the heat radiation of the ladle cover is very important, and the utility model has the advantages that the structure is reasonable, the operation is convenient, and the utility model can fully preheat the high furnace coal gas and the combustion-supporting air, therefore to enable the baking temperature to be greatly improved. The structure is that the utility model has a ladle cover, a preheating device connected with the high furnace coal gas pipeline is arranged on the upper part of the ladle cover, and simultaneously the ladle cover is connected with the air blasting device.
Description
Technical field
The utility model relates to the employed ladle baking facility of a kind of steel industry, relates in particular to a kind of steel-making ladle blast furnace gas Special Baking device that utilizes the band double preheating device that waste gas residual heat adds heating gas and combustion air.
Background technology
Along with the fast development of national economy, the energy consumption of iron and steel enterprises is also growing.And the international petroleum price is constantly soaring, to cost, the profit generation influence greatly of enterprise.Therefore, seeking a kind of good method, blast furnace gas (claiming blast furnace waste gas in the past) is gone to substitute oil product, is a major issue of benefiting the nation and the people.
For a long time, China rationally utilizes method what constantly explore blast furnace gas always, but conventional roaster is because its unreasonable structure, in bake process, heat energy in the ladle distributes in a large number by being incubated weak clad, heat energy in the waste gas also can't be recycled, and has not only wasted the energy but also environment is caused very big thermal pollution.Because the calorific capacity of blast furnace gas is very low, the temperature of directly burning without preheating can only reach about 800 ℃, can't satisfy the needs of the production of ladle baking, and light difficulty under the normal temperature state, very easily takes off fire, extinguishes and cause personal injury.Therefore have to add high heating value gases such as the oil liquefied gas of some or natural gas and carry out multifuel combustion, cause very big financial burden to enterprise, also be a kind of great energy waste.In order to satisfy the needed baking temperature of industrial production, reduce a large amount of energy wastes, have only the roaster clad is designed to recyclable waste gas residual heat, and, also do not find a kind of effective way that can reclaim clad heat energy up to now the ideal structure of coal gas and the abundant preheating of combustion air.
Summary of the invention
The purpose of this utility model is exactly in order to solve in the middle of the present ladle baking process, the clad heat radiation is very important, the blast furnace gas of low heating value can't satisfy the required baking temperature problem of producing, provide a kind of have rational in infrastructure, easy to use, can be with blast furnace gas and the abundant preheating of combustion air, thus make the steel-making ladle blast furnace gas Special Baking device of the band double preheating device of advantages such as baking temperature is greatly improved.
For achieving the above object, the utility model has adopted following technical scheme:
A kind of steel-making ladle blast furnace gas Special Baking device with double preheating device, it has clad, and the preheating apparatus that is connected with blast furnace gas pipeline is arranged at the top of described clad, and clad also is connected with air-supply arrangement simultaneously.
Described clad is installed on the liftable support, which is provided with the burner reserved opening, arranges a burner in this reserved opening; Also be provided with several ventilating openings on clad, they are distributed in around the burner reserved opening; Internal partition is arranged at the clad bottom, and one deck refractory material is adhered in the internal partition bottom.
The lower edge of described clad surpasses the bottom surface of refractory material.
Described burner passes clad, internal partition and refractory material.
Described preheating apparatus comprises that the top that is arranged on clad is equipped with collector mat and its inner gas preheating device; Gas chamber and back gas chamber before the gas preheating device comprises, before be attached thereto by the coal gas heat pipe between gas chamber and the back gas chamber and connect, preceding gas chamber is provided with blast furnace gas pipeline and is connected with blast furnace gas main pipe, and the back gas chamber of its other end is provided with gas exit and is connected with burner; Pressure release orifice is arranged at the top of collector mat, the relevant position before placing between gas chamber and the back gas chamber.
Described coal gas heat pipe is several, presses cellular uniform between preceding gas chamber and back gas chamber.
Described air-supply arrangement comprises air blast, and it is connected with clad by air supply duct.
The beneficial effects of the utility model are: this roaster can be put the normal combustion of fighting fast under the normal temperature state, and the optimum optimization that rapidly blast furnace gas and combustion air is heated continuously makes up thereupon.This combination has not only reduced thermal loss, but also has improved the preheat temperature of coal gas and combustion air, makes the combustion reaction of fuel more abundant, thereby reaches interaction, the optimum efficiency that brings out the best in each other.
After testing, the heat energy recovery rate in the waste gas is more than 70%, thereby greatly reduces the exhaust temperature of burnt gas, reduced the thermal pollution to environment significantly.Make the temperature of blast furnace gas and combustion air bring up to 350～450 ℃ simultaneously, and the baking temperature of ladle can be brought up to 1100～1200 ℃.Having satisfied the needed temperature index of industrial production preferably, is a kind of comparatively desirable roasting plant.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Wherein, 1. clad, 2. internal partition, 3. gas preheating device, 4. air vent, 5. coal gas heat pipe, 6. blast furnace gas pipeline, 7. burner, 8. refractory material, 9. collector mat, 10. air supply duct, 11. pressure release orifices, gas chambers before 12., 13. back gas chambers.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
Embodiment:
Among Fig. 1, clad 1 is positive circular, is fixed on the liftable support, and collector mat 9 is housed on the clad 1.The centre of clad 1 is provided with the burner reserved opening, arranges a burner 7 therebetween, and burner 7 is covered by collector mat 9.Apart from several difform air vents 4 of arranged around of burner certain distance, the layout scope of air vent 4 is not more than the scope that collector mat 9 is covered on the clad 1, and the quantity of air vent 4 is greater than the quantity of burner 7.
Internal partition 2 places in the clad 1, is positioned at the relevant position with clad 1 top certain distance, and there is the burner reserved opening in its centre.Burner 7 passes clad 1 and internal partition 2, and the flame jet is pointed to baked article.
Refractory material 8 is attached to below the internal partition 2.
Collector mat 9 is a rectangle, and gas preheating device 3 is equipped with in inside, and gas preheating device 3 is used the housing of collector mat 9, and gas chamber 12 adds the heat exchange structure that coal gas heat pipe 5 adds back gas chamber 13 before forming.Coal gas heat pipe 5 is by cellular uniform, the quantity of coal gas heat pipe 5 at least one.
Pressure release orifice 11 places collector mat 9 tops, the relevant position between preceding gas chamber and back gas chamber.
The quantity of pressure release orifice 11 at least one.
Blast furnace gas pipeline 6 places an end of collector mat 9, be positioned within the scope that combines with preceding gas chamber, blast furnace gas pipeline 6 at least one.
One side of back gas chamber 13 is provided with gas exit and is connected with burner.
One end of air supply duct 10 is connected a side of clad 1, and the other end is connected with air blast.The quantity of air supply duct 10 at least one.
Blast furnace gas enters an end of gas preheating device 3 by blast furnace gas pipeline 6, distributes to each coal gas heat pipe 5 by preceding gas chamber 12, sends into burner 7 after being assembled by back gas chamber 13.Burner 7 has jet air inducing function, can produce powerful negative pressure combustion air is sucked, and mix after-combustion, and burned flame is sprayed in the ladle by the outlet of burner 7 bottoms and toasts.
The air that air supply duct 10 blasts air blast is sent in the clad 1, flows in the formed space between clad 1 and internal partition 2, and the heat that burnt gas is imported into is taken away simultaneously.Heated air enters collector mat 9 through air vent 4 under pressure, and a part is sucked by burner 7 and participates in burning, and another part and gas preheating device 3 carry out being discharged by pressure release orifice after the heat exchange.
Because the steel-making ladle need be baked to more than 1000 ℃, ladle is inner to exist the huge temperature difference with external environment, causes the speed of thermal energy conduction to be exceedingly fast.For this reason, below internal partition 2, adhere to one deck and have certain thickness refractory material 8.Not only ladle is played insulation effect, can control the preheat temperature of air and coal gas again.
Again because the utility model has disposed the blast furnace gas special nozzle 7 of air inducing automatically, combustion air does not need to exert pressure especially and just can realize automatic mixing, so, the effect of air blast is mainly used in the intensity of cooling of strengthening clad 1, avoid internal partition 2 too early damage under condition of overhigh temperature, thus the service life of having improved equipment greatly.The air that blasts simultaneously is in the middle of process of flowing, coal gas in gas preheating device 3 is come the heat absorption in the waste gas, and coal gas and combustion air are heated in pairs, thereby increased substantially the baking temperature of ladle, satisfied preferably and produced required temperature index.Obtain energy-saving and cost-reducing, as to improve performance double effects.
Claims (7)
1, a kind of steel-making ladle blast furnace gas Special Baking device with double preheating device, it has clad (1), it is characterized in that: the preheating apparatus that is connected with blast furnace gas pipeline (6) is arranged at the top of described clad (1), and clad (1) also is connected with air-supply arrangement simultaneously.
2, the steel-making ladle blast furnace gas Special Baking device of band double preheating device according to claim 1, it is characterized in that: described clad (1) is installed on the liftable support, which is provided with the burner reserved opening, arranges a burner (7) in this reserved opening; Also be provided with several ventilating openings (4) on clad (1), they are distributed in around the burner reserved opening; Internal partition (2) is arranged at clad (1) bottom, and one deck refractory material (8) is adhered in internal partition (2) bottom.
3, the steel-making ladle blast furnace gas Special Baking device of band double preheating device according to claim 2 is characterized in that: the lower edge of described clad (1) surpasses the bottom surface of refractory material (8).
4, the steel-making ladle blast furnace gas Special Baking device of band double preheating device according to claim 2, it is characterized in that: described burner (7) passes clad (1), internal partition (2) and refractory material (8).
5, the steel-making ladle blast furnace gas Special Baking device of band double preheating device according to claim 1 and 2 is characterized in that: described preheating apparatus comprises that the top that is arranged on clad (1) is equipped with collector mat (9) and its inner gas preheating device (3); Gas preheating device (3) comprises preceding gas chamber (12) and back gas chamber (13), before gas chamber (12) and afterwards being attached thereto by coal gas heat pipe (5) between the gas chamber (13) connect, preceding gas chamber (12) is provided with blast furnace gas pipeline (6) and is connected with blast furnace gas main pipe, and the back gas chamber (13) of its other end is provided with gas exit and is connected with burner (7); Pressure release orifice (11) is arranged at the top of collector mat (9), places the relevant position between preceding gas chamber (12) and the back gas chamber (13).
6, the steel-making ladle blast furnace gas Special Baking device of band double preheating device according to claim 5 is characterized in that: described coal gas heat pipe (5) is several, is positioned between preceding gas chamber (12) and the back gas chamber (13) by cellular uniform.
7, the steel-making ladle blast furnace gas Special Baking device of band double preheating device according to claim 1, it is characterized in that: described air-supply arrangement comprises air blast, it is connected with clad (1) by air supply duct (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200118447U CN201000061Y (en) | 2006-11-28 | 2006-11-28 | Roasters special for steel-smelting ladle blast furnace gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200118447U CN201000061Y (en) | 2006-11-28 | 2006-11-28 | Roasters special for steel-smelting ladle blast furnace gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201000061Y true CN201000061Y (en) | 2008-01-02 |
Family
ID=39014466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200118447U Expired - Fee Related CN201000061Y (en) | 2006-11-28 | 2006-11-28 | Roasters special for steel-smelting ladle blast furnace gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201000061Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105014056A (en) * | 2015-07-22 | 2015-11-04 | 河北煜剑节能技术有限公司 | Unpowered internal combustion jet ladle heating device |
| CN105234383A (en) * | 2015-10-28 | 2016-01-13 | 亚新铸造（苏州）有限公司 | Ladle heater used in casting |
| CN106111964A (en) * | 2016-08-12 | 2016-11-16 | 马斌 | A kind of towed ladle ferrum bag apparatus for baking |
| CN107584105A (en) * | 2017-10-24 | 2018-01-16 | 天津理工大学 | Energy-saving premix internal combustion blast-furnace gas ladle baking facilities |
| CN108941525A (en) * | 2018-07-25 | 2018-12-07 | 青岛万恒达机械设备有限公司 | Clothoid type Ladle-casting apparatus |
-
2006
- 2006-11-28 CN CNU2006200118447U patent/CN201000061Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105014056A (en) * | 2015-07-22 | 2015-11-04 | 河北煜剑节能技术有限公司 | Unpowered internal combustion jet ladle heating device |
| CN105234383A (en) * | 2015-10-28 | 2016-01-13 | 亚新铸造（苏州）有限公司 | Ladle heater used in casting |
| CN106111964A (en) * | 2016-08-12 | 2016-11-16 | 马斌 | A kind of towed ladle ferrum bag apparatus for baking |
| CN106111964B (en) * | 2016-08-12 | 2018-08-10 | 马斌 | A kind of towed ladle iron packet apparatus for baking |
| CN107584105A (en) * | 2017-10-24 | 2018-01-16 | 天津理工大学 | Energy-saving premix internal combustion blast-furnace gas ladle baking facilities |
| CN108941525A (en) * | 2018-07-25 | 2018-12-07 | 青岛万恒达机械设备有限公司 | Clothoid type Ladle-casting apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080102 Termination date: 20141128 |
|
| EXPY | Termination of patent right or utility model |