CN201625779U

CN201625779U - Water gap baking oven

Info

Publication number: CN201625779U
Application number: CN201020172333XU
Authority: CN
Inventors: 孙云虎; 王延峰; 马建宏; 成军; 周志祥; 陈大忠; 刘贵福; 张余
Original assignee: Wuhan Iron and Steel Group Corp
Current assignee: Wuhan Iron and Steel Group Corp
Priority date: 2010-04-20
Filing date: 2010-04-20
Publication date: 2010-11-10
Anticipated expiration: 2020-04-20

Abstract

The utility model relates to a water gap baking oven. The water gap baking oven comprises a draught fan (1), a closed baking oven (3) and a pipeline (2), wherein the draught fan (1) is communicated with the baking oven (3) through the pipeline (2); the baking oven (3) wraps the lower part of a water gap (4) on a tundish (7); and the baking oven (3) is communicated with a lining of the tundish (7) through the water gap (4). Waste heat and waste gas produced by a working layer of the lining of the tundish are pumped downwards through the draught fan, the waste heat quickly heats the water gap, the un-burnt gas of the waste gas can be combusted in the baking oven to heat the water gap, the water gap has good heat insulation effect in the baking oven, the baking time can be effectively reduced, and the water gap baking oven is convenient to assemble and flexible to operate. The waste gas is used for heating and baking so as to save the using amount of the baking gas and reduce the noise produced by baking of a burner.

Description

Mouth of a river oven

Technical field

The utility model relates to the continuous casting technology field that smelts, specifically to the online baking applications of continuous casting middle water containing opening.

Background technology

In smelting the continuous casting production field, the cured effect of middle water containing opening is directly connected to open and waters the stable of success rate and slab quality, has crucial meaning in continuous casting production.Existing mouth of a river baking process is two kinds substantially, and first kind is used the off-line baking case that many mouths of a river are toasted simultaneously, install when to be produced.The temperature of mouth of a river baking is controlled well under this mode, but gas consumption is excessive, and mouth of a river genus refractory material, toasts easy oxidation for a long time and causes the mouth of a river to scrap, and have rehandling, installation, and complicated operation causes the mouth of a river to damage easily.The second way is used more, and it adopts baking to burn to chew at the mouth of a river, bottom side opening and toasts heating, flame rising heating nozzle, and this kind method gas consumption height, the baking noise is big, and waste gas directly is discharged into baking zone.

In addition, tundish is when baking, and the waste gas of generation has very high-temperature, and waste gas has been wasted a large amount of heat energy, if can use waste gas to utilize, the mouth of a river is heated again, and is for energy savings and protection environment, all significant.

The utility model content

Technical problem to be solved in the utility model is: a kind of mouth of a river oven is provided, and it utilizes waste gas residual heat and burnt gas that the tundish submersed nozzle is heated with being extracted into the baking mouth of a river, place, the mouth of a river under the waste gas in the bakie working lining.

The utility model solves the problems of the technologies described above the technical scheme that is adopted:

Mouth of a river oven, it comprises air-introduced machine, airtight oven and pipeline, and air-introduced machine is by pipeline and oven UNICOM, and oven encases the bottom, the mouth of a river on the tundish, and oven is by the liner UNICOM of the mouth of a river and tundish.

In the such scheme, it also comprises convergent-divergent channel mouth of a river oven, and pipeline is by convergent-divergent channel and oven UNICOM.

In the such scheme, be covered with refractory masses on the oven inwall.

In the such scheme, convergent-divergent channel is from the sidewall and the oven UNICOM of oven.

Compared with prior art, the waste heat waste gas that the utility model utilizes tundish liner working lining to produce is taken out by under the air-introduced machine, utilize the waste heat Fast Heating mouth of a river, the gas that while waste gas burns incompletely can be oven internal combustion heating nozzle, the mouth of a river is high insulating effect in oven, can effectively reduce stoving time, easy for installation, flexible operation.

The beneficial effects of the utility model also are:

1, utilizes waste gas to carry out heated baking, saved the baking gas consumption, reduced to adopt to burn and chewed the noise that baking produces.

Expand rapidly when 2, convergent-divergent channel can make waste heat waste gas leave oven and reduce pressure, can further reduce noise, more help drive baking furnace gas and outwards flow, make warm quick rising the in the stove.

3, air-introduced machine is drawn waste gas, helps treatment of waste gas, reduces the pollution to environment.

Description of drawings

Fig. 1 is the utility model embodiment side view

Fig. 2 is the utility model embodiment vertical view

Among the figure: 1-air-introduced machine, 2-pipeline, 3-oven, the 4-mouth of a river, 5-refractory masses, 6-convergent-divergent channel, 7-tundish.

The specific embodiment

Below in conjunction with the specific embodiment, the utility model is further described:

The utility model mouth of a river oven embodiment as depicted in figs. 1 and 2, it comprises air-introduced machine 1, airtight oven 3 and pipeline 2, air-introduced machine 1 is by pipeline 2 and oven 3 UNICOMs, and oven 3 encases 4 bottoms, the mouth of a river on the tundish 7, and oven 3 is by the liner UNICOM of the mouth of a river 4 with tundish 7.Be covered with refractory masses 5 on oven 3 inwalls, can protect oven 3 furnace walls, refractory masses 5 is a fire clay.

Mouth of a river oven also comprises convergent-divergent channel 6, and pipeline 2 is by convergent-divergent channel 6 and oven 3 UNICOMs.Internal diameter in the middle of the convergent-divergent channel 6 is little, and the internal diameter at two ends is big.Convergent-divergent channel 6 is from the sidewall and oven 3 UNICOMs of oven 3.

When the utility model mouth of a river oven embodiment works, tundish 7 liners are toasted, produce large quantity of exhaust gas, air-introduced machine 1 is opened, 4 extractions enter oven 3 from the mouth of a river to make the waste heat waste gas that toasts tundish 7, in oven 3 Fast Heating is carried out at the mouth of a river 4, the gas that while waste gas burns incompletely can reach the cured effect that needs oven 3 internal combustion heating nozzles 4.

Adopt the utility model mouth of a river oven that the mouth of a river 4 is toasted, the 90min that stoving time is chewed baking by original burning is reduced to present 70min, and mouth of a river baking fault rate significantly reduces, and watering failure by opening of mouth of a river baking problem initiation is zero.

In addition, oven 3 can be designed to fixed or packaged type, is placed on 4 belows, the mouth of a river that need online baking tundish 7, and the mouth of a river 4 drops down onto lowest order during baking, keeps 4 bottoms, the mouth of a river and oven 3 bottoms that certain distance is arranged.

Claims

1. mouth of a river oven, it is characterized in that: it comprises air-introduced machine (1), airtight oven (3) and pipeline (2), air-introduced machine (1) is by pipeline (2) and oven (3) UNICOM, oven (3) encases the bottom, the mouth of a river (4) on the tundish (7), and oven (3) is by the liner UNICOM of the mouth of a river (4) with tundish (7).

2. the mouth of a river as claimed in claim 1 oven is characterized in that: it also comprises convergent-divergent channel (6), and pipeline (2) is by convergent-divergent channel (6) and oven (3) UNICOM.

3. the mouth of a river as claimed in claim 1 or 2 oven is characterized in that: be covered with refractory masses (5) on oven (3) inwall.

4. the mouth of a river as claimed in claim 2 oven is characterized in that: convergent-divergent channel (6) is from the sidewall and oven (3) UNICOM of oven (3).