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Oxygen-enriched ladle baking device and ladle baking method thereof

An oxygen-enriched, baking bun technology, applied in the field of metallurgy, can solve the problems of short service life of the reversing valve, hidden dangers in safety production, insufficient combustion, etc., and achieve the effects of increasing the flame spray pressure, improving the safety factor, and improving the quality of the baking bun.

Active Publication Date: 2022-07-08
JIANGSU BINXIN STEEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of roaster has the problems of short service life of the reversing valve and easy blockage of the heat storage body.
[0003] At the same time, due to the requirements of the heat storage process, it is difficult to adjust the air and gas flow during work, which may cause insufficient combustion, and when the ladle is separated from the lid and ladle mouth at the end of the ladle, some flames will escape. out of the baker, which poses a certain hidden danger to safe production

Method used

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  • Oxygen-enriched ladle baking device and ladle baking method thereof
  • Oxygen-enriched ladle baking device and ladle baking method thereof
  • Oxygen-enriched ladle baking device and ladle baking method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1, refer to Figure 1-5 , an oxygen-enriched baking bag device, comprising a rack 1 and a cover 2 installed on the rack 1 for covering the mouth of the ladle, the rack 1 can be constructed from profiles, and the rack 1 can be configured with a lifting cover 2 hoist and work with it, the cover 2 is installed with a burner 3, the burner 3 can be selected according to the needs of the existing technology, and the specific material can be 0Cr25Ni20 stainless steel, which can operate at a high temperature of 1200 degrees for a long time. It includes a gas pipeline 4 and an oxygen-enriched gas pipeline that is connected to the burner 3 on the rack 1 and the cover 2, and the cover 2 has a function for improving the combustion of the oxygen-enriched baking bun. A high-rate oxygen-enriched gas heating chamber 4 and a tempering tank 5 for treating the open flame between the cover 2 and the ladle mouth;

[0038] The oxygen-enriched gas heating chamber 4 is provided with a...

Embodiment 2

[0040] Embodiment 2, the oxygen-enriched baking bag device described in Embodiment 1, the gas pipeline includes a gas pipe 10 arranged on the rack 1 and the bag cover 2, the gas pipe 10 is a DN200 pipe, and the gas pipe is The pipe 10 is provided with a stop valve, a gas electric blind valve 11, a pressure transmitter, a mechanical pressure gauge, a gas drain valve 12, a pneumatic butterfly valve and a pneumatic control valve in sequence according to the gas flow direction. The stop valve is a manual stop valve, and the mechanical pressure The table shows the specification of 0-30MPa. The oxygen-enriched gas pipeline includes a compressed air pipe 13 and an oxygen pipe 14 arranged on the frame 1 and the cover 2. The specification of the compressed air pipe 13 is DN100. According to the flow direction of the gas, a stop valve, a compressed air tank 15 with a mechanical pressure gauge, a pressure transmitter, a pneumatic stop valve, a flow regulating valve, a mechanical pressure ...

Embodiment 3

[0041] Embodiment 3, an oxygen-enriched baking bag device described in Embodiment 1, an annular mounting seat 18 is fixedly arranged on the bag cover 2 below the oxygen-enriching gas heating chamber 4, and the inner peripheral surface of the bottom of the annular mounting seat 18 is fixed. An annular nitrogen seat 19 is fixed and extended inward, and an annular guide seat 20 is fixed on the top surface of the annular nitrogen seat 19. The top surface of the annular guide seat 20 and the inner wall of the cover 2 below the oxygen-enriched gas heating chamber 4 are reserved. There is a moving port 21 for guiding the moving open flame. The space formed between the inner wall of the annular mounting seat 18, the upper part of the annular nitrogen seat 19 and the outer wall of the annular guiding seat 20 constitutes the tempering groove 5. The contact part of the inner wall of the upper end of the annular mounting seat 18 and the cover 2 has rounded corners and is set as a tempering...

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Abstract

According to the oxygen-enriched ladle baking device and the ladle baking method thereof, the oxygen-enriched ladle baking device comprises a rack and a ladle cover which is installed on the rack and used for covering a steel ladle opening, a burner is installed on the ladle cover, the oxygen-enriched ladle baking device comprises an oxygen-enriched gas pipeline, and the ladle cover is provided with a tempering groove; a coil pipe is arranged in the oxygen-enriched gas heating cavity, the outlet end of the oxygen-enriched gas pipeline is communicated with the inlet end of the coil pipe, and the outlet end of the coil pipe is communicated with the burner. The tempering groove is provided with an in-groove nitrogen opening, an out-groove nitrogen opening and a straight nitrogen opening; in the ladle baking period, flames at a steel ladle opening easily run into the tempering groove, the tempering groove is designed to be provided with a plurality of tempering corners, the flames can be guided to a tempering corner III, the flames at the tempering corner III are purged through an upper nitrogen channel, and nitrogen is jointly supplied to a nitrogen opening outside the groove and a straight nitrogen opening in cooperation with a lower nitrogen channel. Flames are effectively prevented from jumping out of the ladle baking device, and the safety coefficient of ladle baking operation is improved.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to an oxygen-enriched bun baking device and a bun baking method. Background technique [0002] The existing bun roaster mainly uses air and gas for mixed combustion. During the combustion process, only O2 and fuel participate in the reaction. Not only can N2 and inert gas not support combustion, but also reduce the contact surface between O2 and fuel, resulting in incomplete combustion. The heating is uneven and local high temperature is easily generated, which will make N2 react with O2 to generate a large amount of NOx at high temperature, thereby greatly reducing the probability of collision reaction between O2 and fuel. There are three types of roasters currently used: 1) Self-preheating roasters. The burner of this roaster is equipped with a flue gas recycling device, which absorbs high-temperature flue gas for heating combustion air and reduces roasting heat loss. It has t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D41/015
CPCB22D41/015Y02E20/34
Inventor 邢涛王辉林志旺万延林赵莹苏晓
Owner JIANGSU BINXIN STEEL GRP
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