CN206724727U - A kind of coke drying system - Google Patents
A kind of coke drying system Download PDFInfo
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- CN206724727U CN206724727U CN201720558254.4U CN201720558254U CN206724727U CN 206724727 U CN206724727 U CN 206724727U CN 201720558254 U CN201720558254 U CN 201720558254U CN 206724727 U CN206724727 U CN 206724727U
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- coke
- flue
- air
- butterfly valve
- inducing pipeline
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Abstract
A kind of coke drying system is the utility model is related to, belongs to blast furnace ironmaking equipment technical field.Technical scheme is：Include hot-blast stove（1）, flue（2）, electric butterfly valve one（3）, chimney（4）, electric butterfly valve two（5）, air inducing pipeline（6）, blank-plate valve（7）, air-introduced machine（8）And coke bin（9）, hot-blast stove（1）Flue gas outlet pass through flue（2）With chimney（4）Connection, the flue（2）It is provided with electric butterfly valve one（3）, air inducing pipeline（6）One end and flue（2）Connection, air inducing pipeline（6）The other end pass through air-introduced machine（8）And coke bin（9）Connection, the air inducing pipeline（6）It is provided with electric butterfly valve two（5）And blank-plate valve（7）.The beneficial effects of the utility model are：Solve the problems, such as that coke moisture is too high, breathability of stock column for blast furnace is poor and top temperature is low, promote the stable smooth operation of the working of a furnace.Also hot-blast stove flue gas residual heat resources are recycled simultaneously, have saved the energy.
Description
Technical field
A kind of coke drying system is the utility model is related to, belongs to blast furnace ironmaking equipment technical field.
Background technology
The coke that blast furnace ironmaking uses, due in short supply, very greatly, water content is by normal 7% for the moisture change in coke
25% or so is increased to, causes blast furnace roof temperature to be reduced to 40 DEG C -70 DEG C by original 120 DEG C -150 DEG C, causes bag-type dust
Coal gas condenses in device, and pressure difference rise, sack cleaner can not normal operation.Further, since feeding density charcoal moisture rises, sieved under groove
Point effect is poor, and feeding density powder increases, and causes breathability of stock column for blast furnace to be deteriorated.
In addition, hot-blast stove, during hot blast is sent for blast furnace, caused flue gas directly by being arranged outside chimney, is also made
Into the waste of waste heat.
Utility model content
The utility model purpose is to provide a kind of coke drying system, is dried using the flue gas STRENGTH ON COKE of hot-blast stove
It is dry, the moisture effectively gone in coke removal, solve problem present in background technology.
The technical solution of the utility model is：
A kind of coke drying system, comprising hot-blast stove, flue, electric butterfly valve one, chimney, electric butterfly valve two, air inducing pipeline,
Blank-plate valve, air-introduced machine and coke bin, the flue gas outlet of hot-blast stove are connected by flue with chimney, and the flue is provided with electronic butterfly
Valve one, one end of air inducing pipeline are connected with flue, and the other end of air inducing pipeline is connected by air-introduced machine with coke bin, the induced duct
Road is provided with electric butterfly valve two and blank-plate valve.
The air-introduced machine is close to coke bin.
The outside of the coke bin is provided with flue gas passage, and air inducing pipeline connects with the flue gas passage on the outside of coke bin.
The air inducing pipeline is provided with insulation asbestos.
Using the utility model, can be controlled into the useless of coke bin by electric butterfly valve one, electric butterfly valve two and blank-plate valve
Exhaust gas volumn, flue gas is sent in coke bin by air-introduced machine, the coke in coke bin heated using the waste heat of flue gas
Drying.
The beneficial effects of the utility model are：Solve that coke moisture is too high, breathability of stock column for blast furnace is poor and top temperature is low
Problem, be advantageous to the use of sack cleaner and the output of coal gas, also have facilitation to the stable smooth operation of the working of a furnace, it is high for ironmaking
Stove high and stable yields create condition.Also hot-blast stove flue gas residual heat resources are recycled simultaneously, have saved the energy.
Brief description of the drawings
Fig. 1 is the utility model structure diagram；
In figure：Hot-blast stove 1, flue 2, electric butterfly valve 1, chimney 4, electric butterfly valve 25, air inducing pipeline 6, blank-plate valve 7, draw
Blower fan 8, coke bin 9, flue gas passage 10.
Embodiment
Below in conjunction with accompanying drawing, by example, the utility model is described in further detail.
Referring to the drawings 1, a kind of coke drying system, hot-blast stove 1, flue 2, electric butterfly valve 1, chimney 4, electronic butterfly are included
Valve 25, air inducing pipeline 6, blank-plate valve 7, air-introduced machine 8 and coke bin 9, the flue gas outlet of hot-blast stove 1 are connected by flue 2 with chimney 4
Logical, the flue 2 is provided with electric butterfly valve 1, and one end of air inducing pipeline 6 connects with flue 2, and the other end of air inducing pipeline 6 leads to
Cross air-introduced machine 8 to connect with coke bin 9, the air inducing pipeline 6 is provided with electric butterfly valve 25 and blank-plate valve 7.
In the present embodiment, the model of air-introduced machine 8：G4- 73NO9D centrifugal induced draught fans, air quantity are 24000- 24 800
M3/ h, high-temperature waste flue gas caused by hot-blast stove are sent into coke bin.It is higher in view of EGT, to mitigate to air-introduced machine leaf
Wheel use brings adverse effect, and air-introduced machine 8 is arranged on close at coke bin 9.And install insulation asbestos additional to air inducing pipeline 6, solve
Flue gas overheat, the contradiction scattered and disappeared again more than blower fan temperature in use and flue gas heat of subcooling.
Using the utility model, moisture can remove 5%-10% after coke drying, and drying effect is notable, has reached expected mesh
's.With the reduction of feeding density charcoal moisture, top temperature is gone up therewith, and more than 80 DEG C are raised to by 50 DEG C or so original of 40-.
Coke drying solves the problems, such as that moisture is too high, breathability of stock column for blast furnace is poor and top temperature is low, while reduces coke ratio, has saved energy
Source.As the working of a furnace progressively recovers direct motion, yield also increases substantially, and usage factor rises to 3.7 or so by 3.1 or so.By
Sufficient in coal gas, hot-blast stove supplies blast furnace air temperature and rises to more than 1050 DEG C by 800 DEG C, and reducing coke ratio for blast furnace process creates
Condition.
Using this coke drying system safety notice：
（1）Hot blast operation will ensure certain excess air coefficient, make gas-fired abundant, prevent remaining coal gas from largely entering
Coke bin, air pressure is low and post someone guards during cloudy feeding, ensures the safety of post operation personnel；
（2）For a long time without using coke bin in coke or beans can not be passed through heating by the exhaust gases drying for a long time, in order to avoid because it is long when
Between pre-heating drying, coke bin internal temperature is higher, and coke or beans can spontaneous combustions under natural ventilating status in addition；
（3）When coke moisture is relatively low, during without the use of stack gases pre-heating drying, flue electric butterfly valve one must be in blowing-out
Machine front opening, in order to avoid after stopping air-introduced machine, flashboard does not open influence hot blast stove burning.
Claims (4)
- A kind of 1. coke drying system, it is characterised in that：Include hot-blast stove（1）, flue（2）, electric butterfly valve one（3）, chimney （4）, electric butterfly valve two（5）, air inducing pipeline（6）, blank-plate valve（7）, air-introduced machine（8）And coke bin（9）, hot-blast stove（1）Flue gas Outlet passes through flue（2）With chimney（4）Connection, the flue（2）It is provided with electric butterfly valve one（3）, air inducing pipeline（6）One end With flue（2）Connection, air inducing pipeline（6）The other end pass through air-introduced machine（8）And coke bin（9）Connection, the air inducing pipeline（6）On Provided with electric butterfly valve two（5）And blank-plate valve（7）.
- A kind of 2. coke drying system according to claim 1, it is characterised in that：The air-introduced machine（8）Close to coke bin （9）.
- A kind of 3. coke drying system according to claim 1 or 2, it is characterised in that：The coke bin（9）Outside be provided with Flue gas passage（10）, air inducing pipeline（6）With coke bin（9）The flue gas passage in outside（10）Connection.
- A kind of 4. coke drying system according to claim 3, it is characterised in that：The air inducing pipeline（6）It is provided with and protects Chrysotile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720558254.4U CN206724727U (en) | 2017-05-19 | 2017-05-19 | A kind of coke drying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720558254.4U CN206724727U (en) | 2017-05-19 | 2017-05-19 | A kind of coke drying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206724727U true CN206724727U (en) | 2017-12-08 |
Family
ID=60513973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720558254.4U Active CN206724727U (en) | 2017-05-19 | 2017-05-19 | A kind of coke drying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206724727U (en) |
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2017
- 2017-05-19 CN CN201720558254.4U patent/CN206724727U/en active Active
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