CN207175996U - A kind of heater using converter gas waste-heat steel scrap - Google Patents
A kind of heater using converter gas waste-heat steel scrap Download PDFInfo
- Publication number
- CN207175996U CN207175996U CN201720944032.6U CN201720944032U CN207175996U CN 207175996 U CN207175996 U CN 207175996U CN 201720944032 U CN201720944032 U CN 201720944032U CN 207175996 U CN207175996 U CN 207175996U
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- steel scrap
- scrap
- converter
- heating storehouse
- valve
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
It the utility model is related to a kind of heater using converter gas waste-heat steel scrap, heater includes exhaust fume collecting hood, evaporated flue, conveying pipeline, scrap heating storehouse, steel scrap storage bin, steel scrap thermal insulation barn, the air inlet in scrap heating storehouse is connected by being provided with the first gas transmission line of the first stop valve with evaporated flue, the gas outlet in scrap heating storehouse connects with by the second gas transmission line with evaporated flue, the discharging opening of steel scrap storage bin is connected by one section of conveying pipeline for being provided with the first valve with the charging aperture in scrap heating storehouse, the discharging opening in scrap heating storehouse is connected by one section of conveying pipeline for being provided with the second valve with the charging aperture of steel scrap thermal insulation barn, the conveying pipeline that the discharging opening of steel scrap thermal insulation barn is provided with the 3rd valve by one section connects with the lower end of evaporated flue.The utility model is preheated using high-temperature flue gas burning to steel scrap, come the initial temperature improved, improve converter smelting efficiency and smelting in steel scrap in the feed where ratio, reduce smelting cost.
Description
Technical field
It the utility model is related to technical field of smelting, and in particular to a kind of heating using converter gas waste-heat steel scrap
Device.
Background technology
In metallurgical industry, the source of steelmaking feed mainly has two：Molten iron and steel scrap, steel scrap are the production-goods again of recovery
Source, therefore there is the low advantage of cost relative to molten iron.Steel mill should be multi-purpose useless with molten iron less as far as possible in smelting
Steel, not only improves protection resource, is advantageous to save the sustainable development of the energy, the resource that reduces environmental pollution, promotes again.
At present in converter smelting process, the ratio of steel scrap is typically in 10-15%, and with social production, steel scrap amount is not
Disconnected accumulation, require to add a high proportion of steel scrap in the case that steel scrap has the low advantage of cost compared with molten iron, in convertor steelmaking process, favorably
In reducing smelting cost, but in converter steelmaking process, molten iron is reduced, is increased after steel scrap ratio because heat caused by converter has
Limit, it is difficult to the rapid steel scrap melted in converter, cause programming rate in stove early stage slow, steel scrap is difficult to melt rapidly in converter,
Both operating rate is influenceed, does not reach the purpose for improving steel scrap ratio again.
Utility model content
The purpose of this utility model is to provide a kind of heater using converter gas waste-heat steel scrap and heating
Method, to solve the problems, such as that the ratio that smelting steel scrap in existing converter steeling technology be present is low low with efficiency.
To achieve the above object, the utility model provides a kind of heater using converter gas waste-heat steel scrap,
The heater is provided with the steel scrap of charging aperture and bottom provided with discharging opening including exhaust fume collecting hood, evaporated flue, conveying pipeline, top and added
Hot storehouse, top are provided with charging aperture and bottom is provided with the steel scrap storage bin of discharging opening, top is provided with charging aperture and bottom is provided with discharging
The steel scrap thermal insulation barn of mouth, steel scrap storage bin, scrap heating storehouse and steel scrap thermal insulation barn are arranged at different height from high to low successively
Spend, be provided with air inlet and gas outlet in the side wall in the scrap heating storehouse, the air inlet in the scrap heating storehouse passes through installation
The first gas transmission line for having the first stop valve connects with the evaporated flue, and the gas outlet in the scrap heating storehouse is with passing through second
Gas transmission line connects with the evaporated flue, and the discharging opening of the steel scrap storage bin passes through one section of conveying for being provided with the first valve
Pipe connects with the charging aperture in the scrap heating storehouse, and the discharging opening in the scrap heating storehouse is provided with the second valve by one section
Conveying pipeline connects with the charging aperture of the steel scrap thermal insulation barn, and the discharging opening of the steel scrap thermal insulation barn is provided with the 3rd valve by one section
The conveying pipeline of door connects with the lower end of the evaporated flue, and the exhaust fume collecting hood is arranged at the top of converter mouth, the exhaust fume collecting hood
Upper port and evaporated flue lower port connect.
Preferably, second is provided with the evaporated flue between first gas transmission line and second gas transmission line to cut
Disconnected valve.
Preferably, first stop valve and second stop valve are high temperature stop valve.
Preferably, the heater also includes smoke eliminator, the air inlet of the smoke eliminator with it is described
The upper port connection of evaporated flue.
Preferably, the bottom of steel scrap storage bin, scrap heating storehouse and steel scrap thermal insulation barn is in funnel-form.
Corresponding, another object of the present utility model is to provide a kind of adding using converter gas waste-heat steel scrap
Hot method, the heating means using converter gas waste-heat steel scrap comprise the following steps：
Step S1, steel scrap is added into steel scrap storage bin；
Step S2, check in scrap heating storehouse whether there is steel scrap；
Step S3, if not having steel scrap in scrap heating storehouse, the first valve is opened, makes the steel scrap in steel scrap storage bin
The first valve is turned off after into scrap heating storehouse, goes to step S4；Otherwise step S2 is gone to；
Step S4, checks whether converter is in the smelting phase；
Step S5, if converter is now in the smelting phase, opens the first stop valve and close the second stop valve, by converter
Caused high-temperature flue gas is imported in scrap heating storehouse, and steel scrap is heated to preset temperature by the heat carried using high-temperature flue gas,
Go to step S6；Otherwise close the first stop valve and open the second stop valve, go to step S4；
Step S6, the second valve is opened, the steel scrap after heating is fully entered steel scrap thermal insulation barn；
Step S7, if now converter is in the smelting phase, after the 3rd valve of opening makes the steel scrap after heating enter converter
The 3rd valve is turned off, if now converter is in the non-smelting phase, the 3rd valve is opened again after converter enters next smelting phase
The steel scrap after heating is set to turn off the 3rd valve after entering converter.
Preferably, following steps are also performed while step S5 is performed：Scrap heating storehouse high temperature flue gas is given up
Caused low-temperature flue gas after steel, and converter are in low-temperature flue gas caused by the non-smelting phase and import smoke eliminator progress only
Change.
Preferably, the scope of the preset temperature is 600-1200 DEG C.
Preferably, the temperature range of the high-temperature flue gas is 1600-1800 DEG C.
The utility model has the following advantages that：Heater of the present utility model using converter gas waste-heat steel scrap
And heating means using high-temperature flue gas waste heat caused by converter to steel scrap by before steel scrap enters converter smelting, being carried out pre-
Heat, to improve the initial temperature into converter of steel scrap, accelerate the speed of converter heating, improve efficiency and the smelting of converter smelting
In refining steel scrap in the feed where ratio, reduce smelting cost.
Brief description of the drawings
Fig. 1 is structural representation of the utility model using the heater of converter gas waste-heat steel scrap.
Fig. 2 is schematic flow sheet of the utility model using the heating means of converter gas waste-heat steel scrap.
Embodiment
Following examples are used to illustrate the utility model, but are not limited to the scope of the utility model.
Embodiment 1
As shown in figure 1, this using converter gas waste-heat steel scrap heater include exhaust fume collecting hood 1, evaporated flue 2,
Conveying pipeline 3, scrap heating storehouse 4, steel scrap storage bin 5 and steel scrap thermal insulation barn 6, steel scrap storage bin 5, scrap heating storehouse 4 and steel scrap
Thermal insulation barn 6 is set from high to low successively, and scrap heating storehouse 4, steel scrap storage bin 5 and steel scrap thermal insulation barn 6 are that bottom is in funnel
The warehouse of shape, in 6 three scrap heating storehouse 4, steel scrap storage bin 5 and steel scrap thermal insulation barn warehouses, the top of each warehouse is set
There are charging aperture, bottom to be provided with discharging opening, air inlet and gas outlet, scrap heating storehouse 4 are provided with the side wall in scrap heating storehouse 4
Air inlet connected by being provided with the first gas transmission line 14 of the first stop valve 12 with evaporated flue 2, scrap heating storehouse 4 goes out
Gas port connects with by the second gas transmission line 15 with evaporated flue 2, between the first gas transmission line 14 and the second gas transmission line 15
Second stop valve 13 is installed, the first stop valve 12 and the second stop valve 13 are high temperature stop valve, and steel scrap stores up on evaporated flue 2
The conveying pipeline 3 that the discharging opening of feed bin 5 is provided with the first valve 7 by one section connects with the charging aperture in scrap heating storehouse 4, and steel scrap adds
The conveying pipeline 3 that the discharging opening in hot storehouse 4 is provided with the second valve 8 by one section is connected with the charging aperture of steel scrap thermal insulation barn 6, and steel scrap is protected
The conveying pipeline 3 that the discharging opening in warm storehouse 6 is provided with the 3rd valve 9 by one section connects with the lower end of evaporated flue 2, and exhaust fume collecting hood 1 is in
Inverted funnel-form, exhaust fume collecting hood 1 are arranged at the top of the fire door of converter 10, the upper port of exhaust fume collecting hood 1 and the lower port of evaporated flue 2
Connection, exhaust fume collecting hood 1 enter the entrance of evaporated flue 2 as high-temperature flue gas.
Further, in order to prevent the pollution of the environment, the heater in the present embodiment also includes smoke eliminator 11, cigarette
The air inlet of air purifying apparatus 11 connects with the upper port of evaporated flue 2, and smoke eliminator 11 is LT nonaqueous dust cleaners or OG
Hydrofilter, smoke eliminator 11 are used to reduce the temperature of high-temperature flue gas and remove the dust in high-temperature flue gas, high temperature
The air inlet of flue gas from smoke eliminator 11 enters fashionable, and temperature is carried out at 900 DEG C or so, by smoke eliminator 11 to it
After cooling and dust separation, the gas temperature of the gas outlet discharge of smoke eliminator 11 is down to 70 DEG C or so, dust concentration drop
To 50mg/m3Left and right.
As shown in Fig. 2 the utility model also provides a kind of heating means using converter gas waste-heat steel scrap, should add
Hot method comprises the following steps：
Step S1, steel scrap is added into steel scrap storage bin 5；
During steel scrap is added into steel scrap storage bin 5, a certain amount of steel scrap can be added, can also be filled it up with
Steel scrap, particular number according to be actually needed determine.
Step S2, check in scrap heating storehouse 4 whether there is steel scrap；
Step S3, if there is no steel scrap in scrap heating storehouse 4, the first valve 7 is opened, makes the steel scrap in steel scrap storage bin
Material turns off the first valve 7 after entering scrap heating storehouse 4, goes to step S4；Otherwise step S2 is gone to；
When adding steel scrap into scrap heating storehouse 4, if not having steel scrap in scrap heating storehouse 4, the first valve is opened
Door 7, steel scrap under gravity can be automatically into scrap heating storehouses 4, when the steel scrap in scrap heating storehouse 4 reaches one
When quantitative, the first valve 7 is closed, goes to step S4；There is steel scrap in scrap heating storehouse 4, can not now open the first valve 7,
Because if there is steel scrap in scrap heating storehouse 4, the first valve 7 is opened, unheated steel scrap and steel scrap in steel scrap storage bin 5
Heated steel scrap mixing in heating cabinet 4, heated steel scrap can be made to enter the initial temperature of converter 10 and dropped
It is low, do not reach the purpose that steel scrap ratio is improved in smelting process, therefore, if having steel scrap in scrap heating storehouse 4, go to step
S2。
Step S4, checks whether converter 10 is in the smelting phase；
Step S5, if converter 10 is now in the smelting phase, opens the first stop valve 12 and close the second stop valve 13, will
Caused high-temperature flue gas is imported in scrap heating storehouse 4 in converter 10, and steel scrap is heated to by the heat carried using high-temperature flue gas
Preset temperature, go to step S6；Otherwise close the first stop valve 12 and open the second stop valve 13, go to step S4；
Converter 10 is in the smelting phase, and converter 10 can produce substantial amounts of high-temperature flue gas, and the temperature range of high-temperature flue gas is 1600-
1800 DEG C, the steel scrap in scrap heating storehouse 4 is heated to preset temperature, the value of preset temperature by the heat that high-temperature flue gas carries
Scope is 600-1200 DEG C, and in the case where not considering that heat scatters and disappears, preset temperature is equal to steel scrap and enters the initial of converter 10
Temperature, therefore preset temperature is higher, is more advantageous to improve the ratio of steel scrap in smelting process, when steel scrap is heated to default temperature
After degree, step S6 is gone to；When being in the non-smelting phase due to converter 10,10 generation low-temperature flue gas of converter, these low-temperature flue gas enter
Enter in scrap heating storehouse 4, steel scrap can not only be heated, can also absorb the heat of heated rear steel scrap, drop is useless
The temperature of steel material, now, close the first stop valve 12 and open the second stop valve 13 so that these low-temperature flue gas directly pass through vapour
Change the importing smoke eliminator 11 of flue 2 to be purified.Therefore, if converter 10 is now in the non-smelting phase, close first and cut
Disconnected valve 12 simultaneously opens the second stop valve 13, goes to step S4；
Step S6, the second valve 8 is opened, the steel scrap after heating is fully entered steel scrap thermal insulation barn 6；
Step S7, if now converter 10 is in the smelting phase, opening the 3rd valve 9 makes the steel scrap after heating enter converter
The 3rd valve 9 is turned off after 10, if now converter 10 is in the non-smelting phase, is opened again after converter 10 enters next smelting phase
3rd valve 9, the steel scrap after heating is set to turn off the 3rd valve 9 after entering converter 10.
Further, in order to energy-conserving and environment-protective, following steps are also performed while step S5 is performed：By scrap heating storehouse
Caused low-temperature flue gas after 4 high temperature flue gas steel scraps, and converter 10 are in low-temperature flue gas caused by the non-smelting phase and imported
Smoke eliminator 11 is purified.
Heater of the present utility model and heating means have following characteristics：
1st, steel scrap heat content is high
Steel scrap increases to 600-1200 DEG C by normal temperature, and steel scrap 10 per ton can improve more than heat 405MJ.
2nd, the heating-up time is shortened in stove
Converter 10 smelt initial stage, the steel scrap of identical ratio, such as 40% scrap ratio when, in-furnace temperature leads to when rising to 1650 DEG C
The method crossed the heating steel scrap of the present utility model of this law and improve smelting scrap ratio can shorten second time 40-60.
3rd, improve and smelt scrap ratio
After the technology, 60-180 tons converter 10 can improve scrap ratio in smelting to 60%, effectively reduce converter 10
Smelting cost, reduce energy consumption.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be modified or improved, this is apparent to those skilled in the art
's.Therefore, the these modifications or improvements on the basis of without departing from the utility model spirit, belonging to the utility model will
Seek the scope of protection.
Claims (5)
1. a kind of heater using converter gas waste-heat steel scrap, the heater include exhaust fume collecting hood, evaporated flue,
Conveying pipeline, top are provided with charging aperture and bottom is provided with the scrap heating storehouse of discharging opening, top is provided with charging aperture and bottom is provided with out
The steel scrap storage bin of material mouth, top are provided with charging aperture and bottom is provided with the steel scrap thermal insulation barn of discharging opening, it is characterised in that steel scrap stores up
Feed bin, scrap heating storehouse and steel scrap thermal insulation barn are set from high to low successively, be provided with the side wall in the scrap heating storehouse into
Gas port and gas outlet, the air inlet in the scrap heating storehouse pass through the first gas transmission line for being provided with the first stop valve and the vapour
Change flue connection, the gas outlet in the scrap heating storehouse connects with by the second gas transmission line with the evaporated flue, described useless
The discharging opening of steel storage bin is connected by one section of conveying pipeline for being provided with the first valve with the charging aperture in the scrap heating storehouse, institute
The discharging opening for stating scrap heating storehouse is connected by the charging aperture of one section of conveying pipeline for being provided with the second valve and the steel scrap thermal insulation barn
Logical, the discharging opening of the steel scrap thermal insulation barn is connected by the lower end of one section of conveying pipeline for being provided with the 3rd valve and the evaporated flue
Logical, the exhaust fume collecting hood is arranged at the top of converter mouth, and the upper port of the exhaust fume collecting hood and the lower port of evaporated flue connect.
2. the heater according to claim 1 using converter gas waste-heat steel scrap, it is characterised in that described
The second stop valve is installed on evaporated flue between one gas transmission line and second gas transmission line.
3. the heater according to claim 2 using converter gas waste-heat steel scrap, it is characterised in that described
One stop valve and second stop valve are high temperature stop valve.
4. the heater according to claim 1 using converter gas waste-heat steel scrap, it is characterised in that described to add
Thermal also includes smoke eliminator, and the air inlet of the smoke eliminator connects with the upper port of the evaporated flue.
5. the heater according to claim 1 using converter gas waste-heat steel scrap, it is characterised in that steel scrap stores up
The bottom of feed bin, scrap heating storehouse and steel scrap thermal insulation barn is in funnel-form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720944032.6U CN207175996U (en) | 2017-07-31 | 2017-07-31 | A kind of heater using converter gas waste-heat steel scrap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720944032.6U CN207175996U (en) | 2017-07-31 | 2017-07-31 | A kind of heater using converter gas waste-heat steel scrap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207175996U true CN207175996U (en) | 2018-04-03 |
Family
ID=61744046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720944032.6U Expired - Fee Related CN207175996U (en) | 2017-07-31 | 2017-07-31 | A kind of heater using converter gas waste-heat steel scrap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207175996U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107236841A (en) * | 2017-07-31 | 2017-10-10 | 安徽盛博冶金环保科技有限公司 | The heater and heating means of a kind of use converter gas waste-heat steel scrap |
| CN108517387A (en) * | 2018-05-24 | 2018-09-11 | 武汉钢铁有限公司 | A kind of converter coal gas purification and waste heat recycling system |
-
2017
- 2017-07-31 CN CN201720944032.6U patent/CN207175996U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107236841A (en) * | 2017-07-31 | 2017-10-10 | 安徽盛博冶金环保科技有限公司 | The heater and heating means of a kind of use converter gas waste-heat steel scrap |
| CN108517387A (en) * | 2018-05-24 | 2018-09-11 | 武汉钢铁有限公司 | A kind of converter coal gas purification and waste heat recycling system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180403 Termination date: 20180731 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |