CN108300853A - Cooling for reduced iron and waste-heat recovery device - Google Patents
Cooling for reduced iron and waste-heat recovery device Download PDFInfo
- Publication number
- CN108300853A CN108300853A CN201810148354.9A CN201810148354A CN108300853A CN 108300853 A CN108300853 A CN 108300853A CN 201810148354 A CN201810148354 A CN 201810148354A CN 108300853 A CN108300853 A CN 108300853A
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- CN
- China
- Prior art keywords
- water
- return
- water inlet
- cylinder
- cooling
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/26—Cooling of roasted, sintered, or agglomerated ores
Abstract
The present invention provides a kind of cooling for reduced iron and waste-heat recovery device, includes the cylinder of the undertaking high-temperature material circumferentially rotated, tubular axis and horizontal line angle are 15 degree, are tilted down from feed end to discharge end, it is characterised in that：The inner wall of cylinder is equipped with into water leg, return main is added in the feed end of cylinder, the water inlet manifold that is sleeved on return main, more root diameters are to water inlet pipe and more root diameters to return branch, it is water inlet manifold, return main, coaxial into water leg and return water chuck, wherein the outer wall of water inlet manifold is connected to water inlet pipe with into water leg through more root diameters, into being evenly equipped with several heat exchanger tubes between water leg and return water chuck, the two is connected to, return water chuck is connected to return branch with return main close to water inlet manifold one end through more root diameters.Since heat exchanger tube runs through the cooling duct of entire material walking, the stirring action to material and high-temperature gas is played, the cooling time of material is shortened, increases heat exchange area, enhance heat transfer effect.
Description
Technical field
The present invention relates to a kind of reduced iron cooling device, more particularly to a kind of cooling and waste heat recovery for reduced iron fills
It sets, is mainly used for cooling down reduced iron pelletizing, agglomerates of sintered pellets in UTILIZATION OF VESIDUAL HEAT IN industry.
Background technology
Cooling is one of the process of calcination reduction iron process.The temperature that direct reduced iron pelletizing is exported through rotary hearth furnace or rotary kiln
Up to 1100 DEG C of degree, needs nitrogen charging gas shielded to be cooled to 300 DEG C hereinafter, preventing reduced iron pelletizing from being aoxidized.Currently, most of steel
Inland Steel cools down high temperature pelletizing using rotation drum type cooling machine：High temperature pelletizing enters the cooling with inclination angle through chute
Cylinder, cooling cylinder rotation, material move to discharge end by feed end；Using reaching cooling effect outside the direct spray cylinder body of cooling water
Fruit.This type of cooling comes with some shortcomings：(1) heat transfer type is with the heat transfer and cooling water and cylinder between material and cylinder
Between thermal convection current based on, complex heat transfer coefficient is relatively low；(2) in revolution, material is easy to slide in cylinder body bottom cylinder, object
Transmission of heat by contact area between material and cylinder is fewer；(3) heat of material needs to be transmitted to cooling water by cylinder, due to barrel
It is thicker, thus barrel temperature is higher, deformation is serious；(4) temperature of gas is relatively low in cylinder, and convection current heat-transfer effect is weaker；(5) object
The heat of material does not recycle, and cooling efficiency is low, and cylinder is up to thirty or forty rice, and investment is high, takes up a large area, water spray reaches
To 400m3/ h or more consumes a large amount of water and wastes a large amount of waste heat.CN101787435A discloses that " reduced iron is efficient
Spray rotation drum type cooling machine ", cylinder are formed by cooling down cylinder, front end cylinder and tail end cylinder；Front end cylinder and tail end cylinder
Body is double-layer barrel, and misting cooling is used in the double-layer barrel；The drum surface of entire cooling unit is atomized cooling covering.
Since entire cylinder is atomized water droplet package, is effectively protected cylinder, reduces deformation, also improve equipment operating rate and can
By property.But the technology does not improve the material movement and heat transfer situation of inner barrel, does not have for the heat convection of gas
Invigoration effect is played, can not realize the recycling of waste heat.
Invention content
The technical problem to be solved by the present invention is to：Overcoming the deficiencies of the prior art and provide a kind of can strengthen heat convection, nothing
Spray the cooling of reduced iron pelletizing and waste-heat recovery device that water consumption, exchange capability of heat is strong, waste heat recovery is efficient.Its technical solution
For：
A kind of cooling and waste-heat recovery device for reduced iron, including circumferentially rotate undertaking high-temperature material cylinder,
Tubular axis and horizontal line angle are 1-5 degree, are tilted down from feed end to discharge end, it is characterised in that：The inner wall of cylinder is set
Have into water leg, adds return main in the feed end of cylinder, the water inlet manifold that is sleeved on return main, more root diameters are to water inlet
Branch pipe and more root diameters are water inlet manifold, return main, coaxial into water leg and return water chuck to return branch, wherein water inlet manifold
Outer wall be connected to water inlet pipe with into water leg through more root diameters, into being evenly equipped with several heat exchanger tubes between water leg and return water chuck
The two is connected to, return water chuck is connected to return branch with return main close to water inlet manifold one end through more root diameters.
Its working principle is that：High-temperature material falls into the bottom in the cylinder circumferentially rotated from feed end, and with cylinder
Rotation is slowly moved in the cooling duct constituted into water leg, return water chuck and several heat exchanger tubes to the discharge port of cylinder.
In moving process, high-temperature material is constantly contacted with into water leg, return water chuck and several heat exchanger tubes, carries out heat exchange, finally
Cooling material is discharged from discharge port；Cooling water flows into more root diameters to water inlet pipe from water inlet manifold, then flows sequentially through into water
Chuck, several heat exchanger tubes and return water chuck absorb the heat heating of the gentle body of material, most afterwards through more root diameters to return branch into
Enter return main's discharge, realizes the cooling and waste heat recovery of high-temperature material.
Compared with prior art, the present invention advantage is：Presence into water leg keeps barrel temperature relatively low and is distributed
Uniformly, barrel distortion is small.Into several heat exchanger tubes for being connected to the two are evenly equipped between water leg and return water chuck, heat exchanger tube passes through
The entire radial bed of material is worn, reduces the heat transfer distances of material, while heat exchanger tube pushes material to be rotated together with into water leg, avoids
Material is fallen after reaching a certain height into water leg basal sliding, is washed away in material dropping process into water leg, heat exchange
Pipe and return water chuck form heat convection, effectively increase heat exchange area, enhance the blending and heat transfer of material, make entirely to expect bed
It is cooling uniform, while heat exchanger tube has stirring action to high-temperature gas, enhances the movement of high-temperature gas, enhances high-temperature gas
Heat convection between cooling duct, enhances heat transfer effect.Under the premise of reaching identical cooling effect, in cooling duct
The cooling method of a variety of heat exchange approach collaborations shortens the cooling time of material, reduces the length and floor space of cylinder, together
When prevented spray water consumption, realize the efficient cooling and waste heat recovery of material.
Description of the drawings
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the A-A sectional views of embodiment illustrated in fig. 1；
Fig. 3 is the B-B sectional views of embodiment illustrated in fig. 1；
Fig. 4 is the structural schematic diagram that the C portion of embodiment illustrated in fig. 1 amplifies.
In figure：1 cylinder 2, into water leg 3, return water chuck 4, return main 5, water inlet manifold 6, radial water inlet pipe
7, radial return branch 8, heat exchanger tube
Specific implementation mode
In the embodiment shown in Fig. 1-4：Include the cylinder 1 of the undertaking high-temperature material circumferentially rotated, 1 axis of cylinder and water
Horizontal line angle is 2 degree, is tilted down from feed end to discharge end；The inner wall of cylinder 1 is equipped with into water leg 2, in the charging of cylinder 1
Return main 4, the water inlet manifold being sleeved on return main 45,4 root diameters are added to water inlet pipe 6 and 4 root diameters to return water branch in end
Pipe 7, it is water inlet manifold 5, return main 4, coaxial into water leg 2 and return water chuck 3, wherein the outer wall of water inlet manifold 5 through 4 root diameters to
Water inlet pipe 6 is connected into water leg 2, connects the two into several heat exchanger tubes 8 are evenly equipped between water leg 2 and return water chuck 3
Logical, return water chuck 3 is connected to return branch 7 with return main 4 close to 5 one end of water inlet manifold, 4 root diameter.
Claims (1)
1. a kind of cooling and waste-heat recovery device for reduced iron, including the cylinder (1) of undertaking high-temperature material that circumferentially rotates,
Cylinder (1) axis and horizontal line angle are 1-5 degree, are tilted down from feed end to discharge end, it is characterised in that：Cylinder (1)
Inner wall is equipped with into water leg (2), add return main (4) in the feed end of cylinder (1), be sleeved on return main (4) into
Supply mains (5), more root diameters to water inlet pipe (6) and more root diameters to return branch (7), water inlet manifold (5), return main (4), into
Coaxially with return water chuck (3), wherein the outer wall of water inlet manifold (5) is pressed from both sides through more root diameters to water inlet pipe (6) and water inlet water leg (2)
(2) connection is covered, is connected to the two into several heat exchanger tubes (8) are evenly equipped between water leg (2) and return water chuck (3), return water folder
Set (3) is connected to return branch (7) with return main (4) close to water inlet manifold (5) one end through more root diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810148354.9A CN108300853A (en) | 2018-02-13 | 2018-02-13 | Cooling for reduced iron and waste-heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810148354.9A CN108300853A (en) | 2018-02-13 | 2018-02-13 | Cooling for reduced iron and waste-heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108300853A true CN108300853A (en) | 2018-07-20 |
Family
ID=62865323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810148354.9A Pending CN108300853A (en) | 2018-02-13 | 2018-02-13 | Cooling for reduced iron and waste-heat recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108300853A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916009A (en) * | 2021-10-15 | 2022-01-11 | 辽宁宝来生物能源有限公司 | Cold coke machine for calcined needle coke |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2809172A1 (en) * | 1978-03-03 | 1979-09-06 | Kloeckner Humboldt Deutz Ag | PROCESS AND SYSTEM FOR COOLING REDUCED GOODS SUCH AS FINE-GRAIN ORE |
| JP2000226618A (en) * | 1999-02-04 | 2000-08-15 | Kawasaki Steel Corp | Method for recovering exhaust heat in cooler for sintered ore and cooler for sintered ore |
| CN104789761A (en) * | 2015-04-02 | 2015-07-22 | 山东理工大学 | Reduced iron efficient cooling and waste heat recovery device |
| CN204589268U (en) * | 2015-04-03 | 2015-08-26 | 张辞军 | Outer sharp formula Large Copacity roasting material water cooler |
-
2018
- 2018-02-13 CN CN201810148354.9A patent/CN108300853A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2809172A1 (en) * | 1978-03-03 | 1979-09-06 | Kloeckner Humboldt Deutz Ag | PROCESS AND SYSTEM FOR COOLING REDUCED GOODS SUCH AS FINE-GRAIN ORE |
| JP2000226618A (en) * | 1999-02-04 | 2000-08-15 | Kawasaki Steel Corp | Method for recovering exhaust heat in cooler for sintered ore and cooler for sintered ore |
| CN104789761A (en) * | 2015-04-02 | 2015-07-22 | 山东理工大学 | Reduced iron efficient cooling and waste heat recovery device |
| CN204589268U (en) * | 2015-04-03 | 2015-08-26 | 张辞军 | Outer sharp formula Large Copacity roasting material water cooler |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916009A (en) * | 2021-10-15 | 2022-01-11 | 辽宁宝来生物能源有限公司 | Cold coke machine for calcined needle coke |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180720 |
|
| RJ01 | Rejection of invention patent application after publication |