CN206940931U - Blast furnace raw gas heat riser - Google Patents
Blast furnace raw gas heat riser Download PDFInfo
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- CN206940931U CN206940931U CN201720837247.8U CN201720837247U CN206940931U CN 206940931 U CN206940931 U CN 206940931U CN 201720837247 U CN201720837247 U CN 201720837247U CN 206940931 U CN206940931 U CN 206940931U
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Abstract
A kind of blast furnace raw gas heat riser, to solve existing blast furnace gas cloth bag dedusting device, because blast furnace raw gas temperature is low, cause raw coke oven gas pipeline to block, a series of problems, such as cloth bag service life shortens, ash discharge difficulty and invent.It is characterized in that：The device is to connect a hot blast manifold in blast furnace gas sealing cover from the hot air duct of blast furnace, passes through hot blast and lifts blast furnace raw gas temperature with the raw coke oven gas mixed combustion in blast furnace gas fan housing.Wherein, hot blast manifold is anterior is provided with hot-blast valve, and hot blast manifold is provided with exhaust stack and diffusion valve, and diffusion valve end is provided with muffler.The device effectively heats up blast furnace raw gas, it is ensured that the normal working temperature of blast furnace gas cloth bag dedusting device.The device simultaneously has the advantages that small investment, operating cost are low, simple in construction, easy to operate.It can be widely used for blast furnace gas cloth bag dedusting technical field.
Description
Technical field：
The utility model belongs to blast furnace gas cloth bag dedusting technical field, more particularly to a kind of blast furnace raw gas heating dress
Put.
Background technology：
It is well-known：In the blast furnace gas cloth bag dedusting device course of work, the coal gas into sack cleaner needs necessarily
Technological temperature, if temperature is too high, cloth bag can be burnt out, cause finally work；If temperature is too low, coal can be made
Contained moisture condensation in gas, raw coke oven gas pipeline is caused to block, a series of problems, such as cloth bag service life shortens, ash discharge difficulty.
With blast furnace technology technological progress, blast furnace fuel consumption reduces, and the latter's performance is very prominent, therefore, how to lift and ensure famine
The normal working temperature of coal gas is just into the practical problem for being badly in need of solving.Therefore, Chinese patent CN101818220A was once disclosed
A kind of " blast-furnace gas heating-up system ", the high-temperature hot-air that the system is manufactured by equipment set facility are sent to blast furnace coal
In letter shoot road, its hot blast is set to be mixed with coal gas, so as to lift gas temperature to ensure that the operating temperature of sack cleaner will
Ask.Further, " the blast-furnace gas heating-up method and device " that CN1597995A is announced, party's subtraction unit is by blast furnace gas
A set of heat riser is set up in main channel lining or outside, allows the heat riser to produce high-temp waste gas and is mixed into coal gas
In, raise gas temperature by its caused heat, so as to reach the operating temperature needed for nonaqueous dust cleaner.This two
Although technology can lift gas temperature, there is also defect：Because the two is made an issue of on gas piping, have using combustion
Gas or electric energy heating air and produce the process of high energy hot blast or high temperature hot gas, former capital have it is a set of be connected with gas piping set
Standby facility, therefore, it is difficult to avoid is caused：Invention itself is complicated, takes up an area and space-consuming area is big, and implementing process
Difficulty is big, and working link is more, so that operation troubles is more, complex operation, thus naturally also there is cost of investment and operation
The practical problems such as expense height.
The content of the invention：
The technical problems to be solved by the invention are：In view of the above-mentioned problems, a kind of blast furnace raw gas heat riser is provided, should
Device can effectively heat up blast furnace raw gas, reach the technological temperature needed for sack cleaner, and with simple in construction, behaviour
Facilitate, pacify the features such as reliable entirely.
Its technical scheme is：A kind of blast furnace raw gas heat riser, including blast furnace gas sealing cover, it is characterised in that：From height
The hot air duct of stove connects a hot blast manifold to blast furnace gas sealing cover, wherein, hot blast manifold front portion is provided with hot-blast valve.In addition,
Hot blast manifold is provided with exhaust stack and diffusion valve, and is provided with muffler diffusing pipe end.
The operation principle of apparatus of the present invention is：
When needing heating, hot-blast valve is opened, now because hot-blast pressure is higher than raw coke oven gas pressure in blast furnace gas sealing cover, therefore
Hot blast enters in blast furnace gas sealing cover；Again due to ignition point of the hot blast temperature higher than raw coke oven gas in blast furnace gas sealing cover, therefore enter
Part blast furnace raw gas in blast furnace gas sealing cover is lighted generation high-temp waste gas by the hot blast of blast furnace gas sealing cover, high-temp waste gas with
Unburned blast furnace raw gas is mixed so as to lift blast furnace raw gas temperature in blast furnace gas sealing cover.At that time, hot blast valve opening is bigger,
The hot blast being sent into stove is more, and blast furnace raw gas temperature is lifted higher, therefore by controlling hot blast valve opening to realize
Control to blast furnace raw gas temperature raising amplitude.
If blast furnace raw gas system need not heat up, then close hot-blast valve.Hot blast manifold temperature after hot-blast valve is closed
It can gradually reduce, when hot blast manifold needs heating, open diffusion valve, now due to hot-blast pressure superatmospheric power, thus it is hot
Wind is discharged into air.At that time, the hot blast of hot air duct flows through hot blast manifold, then through exhaust stack by diffusion valve, eventually through disappearing
Sound device is discharged into air, and discharge capacity is controlled by diffusion valve discharge area.Because exhaust stack is between hot-blast valve and hot air duct, and
Close to hot-blast valve, therefore the hot blast for flowing through hot blast manifold can play thermogenic action to whole hot blast manifold.
Compared with prior art, the invention has the advantages that：
1st, blast furnace raw gas heat riser provided by the invention, by improving blast furnace raw gas temperature in blast furnace gas sealing cover
Degree, the gas temperature that can be effectively ensured from furnace roof output meet the technological requirement of sack cleaner, so as to solve because blast furnace is waste
Series of technical caused by gas temperature is low.
2nd, the present apparatus, which only needs into blast furnace gas sealing cover to draw from blast-furnace hot-air pipeline, connects a hot blast manifold, utilizes existing heat
Wind, only mixed by being burnt between hot blast and the raw coke oven gas in blast furnace gas sealing cover, the temperature-rise period of raw coke oven gas can be realized, be
It is safe, direct, efficient, convenient, economical, environmentally friendly.
3rd, the gas temperature due to blast furnace output and the heat positive correlation in entrance blast furnace gas sealing cover, therefore hot-blast valve
The temperature control that can easily realize to blast furnace output coal gas is set, i.e., exported by holding the aperture of hot-blast valve to control blast furnace
Gas temperature, so just cause the present invention that there is extensive regulation space, to adapt to the temperature of different types of sack cleaner
Need, therefore have a wide range of application.
4th, because above feature is not difficult to find out that the utility model is simple in construction, it is easy to implement, easy to operate, beneficial to maintenance
Management.And floor space and occupy little space, person property's power less investment, thus cost is low, economic benefit and social benefit are obvious,
Therefore promoted beneficial to large-area applications.
Brief description of the drawings：
Fig. 1 is structural representation of the present utility model.
Embodiment：
The utility model is elaborated below in conjunction with the accompanying drawings.
As shown in figure 1, blast furnace raw gas heat riser provided by the utility model, including blast furnace gas sealing cover 1, its feature
It is：In from one hot blast manifold 6 of connection of hot air duct 7 of blast furnace to blast furnace gas sealing cover 1, wherein, the front portion of hot blast manifold 6 is provided with
Hot-blast valve 2.Here, on hot blast manifold 6 and exhaust stack 3 and diffusion valve 4 are provided with, muffler 5 is provided with the end of exhaust stack 3.And
Exhaust stack 3 is between hot-blast valve 2 and hot air duct 7, and exhaust stack 4 is close to hot-blast valve 2.
Be not difficult to find out by above scheme, the utility model be connected from the hot air duct 7 of blast furnace a hot blast manifold 6 to
In blast furnace gas sealing cover 1, it is to make hot blast and blast furnace raw gas that mixed combustion occur that it, which is acted on, so as to lift blast furnace raw gas temperature
Degree, and then ensure the normal work of blast furnace gas cloth bag dedusting device.Hot air duct 7 mentioned here refers to blast funnace hot blast stove hot blast
It is exported to the pipeline of all logical hot blasts of air-supply apparatus of blast furnace and flows backwards damping down pipeline.In actual motion, if blast furnace raw gas
When temperature has reached the operating temperature needed for blast furnace gas cloth bag dedusting device, hot-blast valve 2 is closed.Hot-blast valve 2 treats heat after closing
Wind branch pipe temperature is reduced to when needing heating, opens diffusion valve 3, you can hot blast manifold 6 is heated up in good time and is discharged into hot blast greatly
In gas.
The utility model can be widely used for blast furnace gas cloth bag dedusting technical field.
Claims (3)
1. a kind of blast furnace raw gas heat riser, including blast furnace gas sealing cover (1), it is characterised in that：From the hot air duct of blast furnace
(7) it is interior to blast furnace gas sealing cover (1) to connect a hot blast manifold (6), wherein, hot blast manifold (6) front portion is provided with hot-blast valve (2).
2. blast furnace raw gas heat riser according to claim 1, it is characterised in that：It is provided with and puts on hot blast manifold (6)
Separate tube (3) and diffusion valve (4).
3. blast furnace raw gas heat riser according to claim 2, it is characterised in that：It is provided with and disappears in exhaust stack (3) end
Sound device (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720837247.8U CN206940931U (en) | 2017-07-05 | 2017-07-05 | Blast furnace raw gas heat riser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720837247.8U CN206940931U (en) | 2017-07-05 | 2017-07-05 | Blast furnace raw gas heat riser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206940931U true CN206940931U (en) | 2018-01-30 |
Family
ID=61368509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720837247.8U Active CN206940931U (en) | 2017-07-05 | 2017-07-05 | Blast furnace raw gas heat riser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206940931U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114058758A (en) * | 2020-08-03 | 2022-02-18 | 阜新达诚科技有限公司 | Blast furnace raw gas heating method and device |
-
2017
- 2017-07-05 CN CN201720837247.8U patent/CN206940931U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114058758A (en) * | 2020-08-03 | 2022-02-18 | 阜新达诚科技有限公司 | Blast furnace raw gas heating method and device |
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