CN202730198U - Oxygen-rich blowing device of steel rolling heating furnace - Google Patents
Oxygen-rich blowing device of steel rolling heating furnace Download PDFInfo
- Publication number
- CN202730198U CN202730198U CN 201220407840 CN201220407840U CN202730198U CN 202730198 U CN202730198 U CN 202730198U CN 201220407840 CN201220407840 CN 201220407840 CN 201220407840 U CN201220407840 U CN 201220407840U CN 202730198 U CN202730198 U CN 202730198U
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- oxygen
- input tube
- pressure
- pure oxygen
- heating furnace
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Abstract
The utility model relates to an oxygen-rich blowing device of a steel rolling heating furnace. The device comprises a regenerative heating furnace which are respectively provided with a gas inlet pipe, an air inlet pipe and an exhaust gas output pipe, wherein the air inlet pipe is parallelly connected with a pure oxygen input pipe, the air inlet pipe and the pure oxygen input pipe are respectively provided with a pressure control valve, a controlled signal of the pressure control valve is connected with a pressure balance controller which controls that the pressure of the pure oxygen input pipe is always greater than that of the air inlet pipe. The oxygen-rich blowing device of the steel rolling heating furnace is simple in structure, and solves a problem of the oxygen-rich combustion of the regenerative heating furnace by parallelly connecting a pure oxygen supplying pipe to a blowing pipeline.
Description
Technical field
The utility model relates to metallurgical field of steel-making, particularly a kind of heater for rolling steel oxygen enriched blast device.
Background technology
The combustion processes of heater for rolling steel routine all exists weak point, and local anoxic produces incomplete combustion, and flame temperature is on the low side also can to produce incomplete combustion, and combustiblesubstance becomes flue dust drains, and wastes energy, and causes topsoil.Oxygen-enriched combusting is for the oxygen-starved area, and local oxygen enriching makes sufficient combustion, and flame temperature improves, and yield of radiation significantly promotes, thereby the utilization ratio of heat energy is significantly promoted.The oxygen-enriched combusting of heater for rolling steel is to substitute pressurized air (replacement gas blower) with pure oxygen to burn at present, because be pure oxygen, make the clean-burning while of coal gas, accelerated combustionvelocity, temperature raising is fast, save combustion time, and 78.09% nitrogen not band carry out process furnace tail gas amount and significantly reduce, calorific loss is little.Needed like this coal gas amount also significantly reduces the basis of (approximately saving 30%) save energy that Here it is, but it is larger using the amount of oxygen usage quantity, secondly usefulness is also heated in present most steel rolling is recuperative heater (at present domestic generally use be exactly this), to burn with air blast, then the heat of tail gas is reclaimed, make steel billet carry out in advance again preheating, such effect is the same, therefore to use pure gas firing be uneconomic to recuperative heater, and therefore how carrying out oxygen-enriched combusting when using air blast in recuperative heater is a new problem.
Summary of the invention
The purpose of this utility model is a kind of heater for rolling steel oxygen enriched blast device technique scheme that proposes for the problems referred to above, by in the air blast pipeline and connect a pure oxygen supply-pipe and solved recuperative heater oxygen-enriched combusting problem.
To achieve these goals, the technical solution of the utility model is: a kind of heater for rolling steel oxygen enriched blast device, comprise recuperative heater, be respectively arranged with gas inlet pipe, air input tube and exhaust output tube at recuperative heater, wherein, on the air input tube and be connected to the pure oxygen input tube, be respectively equipped with pressure controlled valve at described air input tube and pure oxygen input tube, the manipulated signal of pressure controlled valve is connected to a pressure balance controller, and pressure balance controller control pure oxygen input tube pressure is all the time greater than air input tube pressure.
Described pure oxygen input tube pressure is greater than air input tube pressure 0.01 kg/cm
2To 0.05kg/cm
2
The beneficial effects of the utility model are: simple in structure, and by in the air blast pipeline and connect a pure oxygen supply-pipe and solved recuperative heater oxygen-enriched combusting problem.
Below in conjunction with drawings and Examples the utility model is done further detailed description.
Description of drawings
Fig. 1 the utility model structural representation.
Embodiment
A kind of heater for rolling steel oxygen enriched blast device, comprise recuperative heater 1, be respectively arranged with gas inlet pipe 2, air input tube 3 and exhaust output tube 4 at recuperative heater, wherein, on the air input tube and be connected to pure oxygen input tube 5, be respectively equipped with pressure controlled valve 3-1 and 5-1 at described air input tube and pure oxygen input tube, the manipulated signal of pressure controlled valve is connected to a pressure balance controller 6, and pressure balance controller control pure oxygen input tube pressure is all the time greater than air input tube pressure.
Wherein, for pure oxygen continuously being inputted with air, described pure oxygen input tube pressure is greater than air input tube pressure 0.01 kg/cm
2To 0.05kg/cm
2
Embodiment utilize enterprise's oxygen more than needed (mainly be allow iron and steel enterprise produce in unnecessary oxygen be recycled utilization) oxygenation in heater for rolling steel, the oxygenation approach is oxygenation on the house steward of blower export.The air of oxygen enrichment enters process furnace, coal gas is burning fully, shorten heat-up time, because heat demand is constant, thus air and coal gas all can save in a large number, among the embodiment, as long as oxygen pressure is slightly larger than the air pressure of gas blower, oxygen can be at the enterprising process furnace of air draft house steward, and the oxygen amount can add according to the consumption of reality, and what do not limit (the pure oxygen burning amount is following).Therefore, oxygen can be regulated use according to the practical situation of producing.Can reduce the air quantity of blower fan behind the adding oxygen, ratio is oxygenase-1 % checking 5%.Coal gas amount system can automatically regulate and reduce.Thereby energy-conservation, warm-up time can shorten because of quick heating.Output of steel can corresponding raising.
Claims (2)
1. heater for rolling steel oxygen enriched blast device, comprise recuperative heater, be respectively arranged with gas inlet pipe, air input tube and exhaust output tube at recuperative heater, it is characterized in that, on described air input tube and be connected to the pure oxygen input tube, be respectively equipped with pressure controlled valve on described air input tube and the pure oxygen input tube, the manipulated signal of pressure controlled valve is connected to a pressure balance controller, and pressure balance controller control pure oxygen input tube pressure is all the time greater than air input tube pressure.
2. a kind of heater for rolling steel oxygen enriched blast device according to claim 1 is characterized in that described pure oxygen input tube pressure is greater than air input tube pressure 0.01kg/cm
2To 0.05kg/cm
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220407840 CN202730198U (en) | 2012-08-17 | 2012-08-17 | Oxygen-rich blowing device of steel rolling heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220407840 CN202730198U (en) | 2012-08-17 | 2012-08-17 | Oxygen-rich blowing device of steel rolling heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202730198U true CN202730198U (en) | 2013-02-13 |
Family
ID=47655915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220407840 Expired - Fee Related CN202730198U (en) | 2012-08-17 | 2012-08-17 | Oxygen-rich blowing device of steel rolling heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202730198U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103566829A (en) * | 2013-11-09 | 2014-02-12 | 七台河宝泰隆圣迈煤化工有限责任公司 | Automatic nitrogen pressure regulating control device of refining and cracking buffer tanks |
-
2012
- 2012-08-17 CN CN 201220407840 patent/CN202730198U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103566829A (en) * | 2013-11-09 | 2014-02-12 | 七台河宝泰隆圣迈煤化工有限责任公司 | Automatic nitrogen pressure regulating control device of refining and cracking buffer tanks |
| CN103566829B (en) * | 2013-11-09 | 2016-01-06 | 七台河宝泰隆圣迈煤化工有限责任公司 | Refine and cracking surge tank nitrogen pressure regulation automaton |
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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: 20130213 Termination date: 20200817 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |