CN1392385A - Oxygen distributing device for vertical pelleti furnace - Google Patents
Oxygen distributing device for vertical pelleti furnace Download PDFInfo
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- CN1392385A CN1392385A CN 01115024 CN01115024A CN1392385A CN 1392385 A CN1392385 A CN 1392385A CN 01115024 CN01115024 CN 01115024 CN 01115024 A CN01115024 A CN 01115024A CN 1392385 A CN1392385 A CN 1392385A
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- reversal valve
- furnace
- regenerator
- vertical
- pelleti
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention relates to steel-smelting equipment. The oxygen distributing mechanism for vertical pellet furnace has change valve connecting pipe, heat accumulating chamber filled with heat accumulating body, and change valve connected between air inlet pipe and the smoke exhaust pipe. The present invention can increase the oxygen content in fume without affecting the fume temperature obvisouly for forced oxidation roasting to increase the yield of pellet and raise its quality.
Description
The present invention relates to steel smelting equipment, is a kind of oxygen distributing device for vertical pelleti furnace.
Green-ball roasting in shaft furnace needs six stages, and wherein two stages of roasting and soaking are technical process important in the pelletizing production, the quality of decision pelletizing production.Shaft furnace generally all adopts blast furnace gas to make fuel both at home and abroad, yet blast furnace gas calorific value is lower, makes the production of shaft furnace be in roasting in the weak oxide atmosphere for a long time, causes the usage factor of shaft furnace and the quality of pellet all to be in reduced levels.Those skilled in the art once adopted the two preheatings of space gas and mixed method such as high heating value gas, and improving the flue gas oxygen content in the shaft roasting stage, reason such as big or operating cost height still can not be applied so far owing to the investment of these methods.
The objective of the invention is, a kind of oxygen distributing device for vertical pelleti furnace is provided, it is installed on the shaft furnace and uses, and it has following advantage: guaranteeing that flue-gas temperature changes under the little condition, increase considerably the oxygen content in the flue gas, reach the technological requirement of strong oxidizing roast; Increase the quality and the output of pellet; Cost is low; Long service life; Reliable.
The present invention for the technical scheme of finishing the foregoing invention purpose and providing is, it has reversal valve tube connector, regenerator, heat storage is installed in the regenerator, reversal valve tube connector upper end is connected with reversal valve, the air inlet of reversal valve tube connector lower end and regenerator lower end joins, reversal valve one end is connected with blast pipe, and the other end is connected with smoke exhaust pipe.Regenerator is two, is installed in both sides, shaft furnace combustion chamber respectively.Heat storage is spherical.Heat storage is cellular.
The present invention knows through on probation, has following advantage: can reach under the little condition of flue-gas temperature variation, increase considerably the oxygen content in the flue gas, satisfy the technological requirement of strong oxidizing roast, accelerate the speed of magnetic iron ore oxidation, increase the magnetic iron ore degree of oxidation, increased substantially the quality and the output of pellet, cost is low, long service life, reliable, do not influence the former combustion system of shaft furnace.
Description of drawings: accompanying drawing 1 is that the present invention installs and uses state diagram, and accompanying drawing 2 is A-A cutaway views in the accompanying drawing 1, mainly illustrates the internal structure of this device.The contrast drawings and Examples, the present invention will be further described:
5 is reversal valve tube connectors among the figure, the 2nd, and be regenerator, heat storage 3 is installed in the regenerator 2, reversal valve tube connector 5 upper ends are connected with reversal valve 6, the air inlet 4 of reversal valve tube connector 5 lower ends and regenerator 2 lower ends joins, and reversal valve 6 one ends are connected with blast pipe 7, and the other end is connected with smoke exhaust pipe 8.Regenerator 2 is two, is installed in both sides, shaft furnace combustion chamber respectively.Heat storage 3 can be spherical, and heat storage 3 also can be cellular.Heat storage 3 of the present invention, air inlet 4 and reversal valve tube connector 5, spout 1 are two, are symmetrically distributed in the both sides, combustion chamber.During work, when a regenerator 2 was in the smoke evacuation state, another then was in ventilation state, and the switching of their duties is finished by reversal valve 6.The effect of heat storage 3 of the present invention is, as about 2000Nm
3When 1094 ℃ of flue gases of/h entered regenerator 2, most of heat of flue gas was absorbed by heat storage 3, and the temperature of flue gas is reduced to below 150 ℃, and at this moment, flue gas enters the shaft furnace smoke evacuation system through reversal valve 6; Simultaneously, 2000Nm
3The air of/h through another regenerator, after the heat of absorption heat storage 3 is heated to 1000 ℃, sprays into shaft furnace by reversal valve 6, mixes with other flue gas, and about 1090 ℃ of formation temperatures, oxygen content is about 4.8% flue gas, sprays into the furnace zone of shaft furnace.When the present invention installs and uses, two regenerator 2 are separately positioned on the terminal distributor chamber both sides of shaft furnace burning, its course of work is, the aerial partial fume of shaft furnace burning enters 2, two heat storages 3 of two regenerator respectively through spout 1 and absorbs heat in the flue gas simultaneously, and it is lower that flue-gas temperature is reduced to, after reversal valve 6 switchings, flue gas in one of them regenerator 2 through one of them air inlet 4 and a reversal valve tube connector 5, is discharged by smoke exhaust pipe 8.Simultaneously, air (or air of adding oxygen) is through blast pipe 7 another reversal valve tube connector 5 and air inlets 4, enter another regenerator 2, sprayed into the shaft furnace combustion chamber after 3 heating of heat storage in this chamber, realized the roasting of shaft furnace strong oxidizing atmosphere, reached purpose of the present invention.Design according to technological requirement the commutating period of reversal valve 6, is generally 1-3 minute and is advisable.
Claims (4)
1, oxygen distributing device for vertical pelleti furnace, it is characterized in that: it has reversal valve tube connector (5), regenerator (2), heat storage (3) is installed in the regenerator (2), reversal valve tube connector (5) upper end is connected with reversal valve (6), the air inlet (4) of reversal valve tube connector (5) lower end and regenerator (2) lower end joins, reversal valve (6) one ends are connected with blast pipe (7), and the other end is connected with smoke exhaust pipe (8).
2, oxygen distributing device for vertical pelleti furnace according to claim 1 is characterized in that: regenerator (2) is two, is installed in both sides, shaft furnace combustion chamber respectively.
3, oxygen distributing device for vertical pelleti furnace according to claim 1 is characterized in that: heat storage (3) is spherical.
4, oxygen distributing device for vertical pelleti furnace according to claim 1 is characterized in that: heat storage (3) is cellular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01115024 CN1392385A (en) | 2001-06-20 | 2001-06-20 | Oxygen distributing device for vertical pelleti furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01115024 CN1392385A (en) | 2001-06-20 | 2001-06-20 | Oxygen distributing device for vertical pelleti furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1392385A true CN1392385A (en) | 2003-01-22 |
Family
ID=4661619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01115024 Pending CN1392385A (en) | 2001-06-20 | 2001-06-20 | Oxygen distributing device for vertical pelleti furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1392385A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019007001A1 (en) * | 2017-07-07 | 2019-01-10 | 中冶南方工程技术有限公司 | Regenerative combustion type coal-based shaft furnace and direct reduction production method |
-
2001
- 2001-06-20 CN CN 01115024 patent/CN1392385A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019007001A1 (en) * | 2017-07-07 | 2019-01-10 | 中冶南方工程技术有限公司 | Regenerative combustion type coal-based shaft furnace and direct reduction production method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |