CN103335522B - Drying grate blasting drying period hot-air system - Google Patents
Drying grate blasting drying period hot-air system Download PDFInfo
- Publication number
- CN103335522B CN103335522B CN201310326731.0A CN201310326731A CN103335522B CN 103335522 B CN103335522 B CN 103335522B CN 201310326731 A CN201310326731 A CN 201310326731A CN 103335522 B CN103335522 B CN 103335522B
- Authority
- CN
- China
- Prior art keywords
- drying
- hot
- central cooler
- air duct
- hot air
- Prior art date
- 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.)
- Active
Links
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The invention belongs to grate-kiln pelletizing process process heat wind system technical field, especially a kind of drying grate blasting drying period hot-air system is related to, comprise drying grate blasting drying period, preheating I section, central cooler secondary cooling zone, three cold sections, be arranged on the hot air duct I between drying grate blasting drying period and cold section of central cooler three, be arranged on the hot air duct II between drying grate preheating I section and central cooler secondary cooling zone, it is characterized in that being provided with hot blast connecting pipe between hot air duct I and hot air duct II, this hot blast connecting pipe is provided with pipeline butterfly valve, hot air duct I is provided with thermocouple, this thermocouple is connected with automatic temperature control device respectively with pipeline butterfly valve.Drying grate blasting drying period hot-air system of the present invention, the part hot blast of central cooler secondary cooling zone is incorporated in the hot air duct of cold section of central cooler three, automatically control hot air flow by thermocouple and pipeline butterfly valve, thus meet the independent dry object of drying grate blasting drying period.
Description
Technical field
The invention belongs to grate-kiln pelletizing process process heat wind system technical field, especially relate to a kind of drying grate blasting drying period hot-air system.
Background technology
The recycling of hot blast in drying grate-rotary kiln-circular cooler pelletizing process hot-air system, play very important effect to energy-saving and cost-reducing, it directly determines the energy consumption index of pellet production line and the normal production of whole system.In grate-kiln pelletizing technique, there is the relation utilized each other in the hot blast between this three large main frame of drying grate, rotary kiln, central cooler, makes good use of, effectively can save the energy.
Central cooler to the hot-bulb nodulizing from rotary kiln carry out air blast cooling after outward transport, central cooler is generally divided into four cooling sections, is followed successively by from hot-bulb to cold ball: one cold section, secondary cooling zone, three cold sections, four cold sections.Drying grate has the function of drying to green-ball and preheating, and generally, drying grate is divided into four sections, separates between each section with partition wall, is followed successively by blasting drying period, down-draft drying zone, preheating I section, preheating II section from feed end.The hot blast of each section of drying grate is respectively from rotary kiln, central cooler and the hot air circulation of itself.Wherein blasting drying period hot blast is from cold section of central cooler three, and the hot blast that preheating is I section is from central cooler secondary cooling zone.Drying grate blasting drying period generally needs the hot blast of about 200 DEG C, and the heatrejection of central cooler three cold sections of hot air duct outlets is 270 DEG C, through the conduit running in long distance, thermal loss temperature is down to 150 DEG C-180 DEG C (if bloodstone, temperature may be lower), actual Production requirement cannot be met.In order to avoid the loss of heat, usually adopt in actual production and the partition wall between drying grate down-draft drying zone and blasting drying period is upwards raised, or partition wall will be opened two circular holes, object wants that the heat by down-draft drying zone flows backward to blasting drying period by gap or circular hole, and the heatrejection of blasting drying period is raised.The method of this partition wall heat conduction can improve the temperature of blasting drying period to a certain extent really, but it also also exists some drawbacks:
(1) " partition wall heat conduction " is under the incomplete prerequisite of hot-air system, and the one being forced to adopt " remedies " means, fundamentally can not improve the temperature of blasting drying period;
(2) although " partition wall heat conduction " can improve the temperature of blasting drying period, and temperature is also distribution gradient, namely the closer to partition wall, temperature is higher.So " partition wall heat conduction " fundamentally can not solve the low situation of blasting drying period temperature, and " partition wall heat conduction " can not the temperature of manual control blasting drying period, and temperature control is dumb;
(3) if the iron ore concentrate raw material limonite that to be crystal water content more, so the burst temperature of green-ball will be very low.In partition wall place temperature close to down-draft drying zone, and when green-ball water content is also many, green-ball just has the danger that explosion occurs at blasting drying period.Do not have the green-ball burst, after entering down-draft drying zone, if burst temperature is lower than down-draft drying zone temperature, so green-ball just very easily bursts, thus affects the production of pellet.
Summary of the invention
The object of the invention is one independently, temperature automatically controlled drying grate blasting drying period hot-air system can be realized.
The object of the invention is to be realized by following technical proposals:
Drying grate blasting drying period hot-air system of the present invention, comprise drying grate blasting drying period, drying grate down-draft drying zone, drying grate preheating I section, drying grate preheating II section, cold section of central cooler one, central cooler secondary cooling zone, cold section of central cooler three, cold section of central cooler four, be arranged on the hot air duct I between described drying grate blasting drying period and cold section of central cooler three, be arranged on the hot air duct II between described drying grate preheating I section and central cooler secondary cooling zone, it is characterized in that having built refractory material body of wall by laying bricks or stones between described drying grate blasting drying period and drying grate down-draft drying zone, hot blast connecting pipe is provided with between described hot air duct I and hot air duct II, this hot blast connecting pipe is provided with pipeline butterfly valve, described hot air duct I is provided with thermocouple, this thermocouple is connected with automatic temperature control device respectively with described pipeline butterfly valve.
Advantage of the present invention:
Drying grate blasting drying period hot-air system of the present invention, structure is simple, easy construction, stop the problem that " partition wall heat conduction " brings, drying grate blasting drying period hot-air system of the present invention is incorporated into the part hot blast of central cooler secondary cooling zone in the hot air duct of cold section of central cooler three, automatically hot air flow is controlled by thermocouple and pipeline butterfly valve, by the hot blast temperature manual control in the hot air duct of cold for central cooler three section to 200 ~ 250 DEG C, thus meet the independent dry object of drying grate blasting drying period, not only add the drying capacity of blasting drying period, also reduce the burden of drying grate down-draft drying zone.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
The specific embodiment of the present invention is further illustrated below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of drying grate blasting drying period hot-air system of the present invention, comprise drying grate blasting drying period 5, drying grate down-draft drying zone 7, drying grate preheating I section 8, drying grate preheating II section 9, central cooler one cold section 10, central cooler secondary cooling zone 12, central cooler three cold section 13, central cooler four cold section 14, be arranged on the hot air duct I 15 between described drying grate blasting drying period 5 and central cooler three cold section 13, be arranged on the hot air duct II 11 between described drying grate preheating I section 8 and central cooler secondary cooling zone 12, it is characterized in that having built refractory material body of wall 6 by laying bricks or stones between described drying grate blasting drying period 5 and drying grate down-draft drying zone 7, hot blast connecting pipe 2 is provided with between described hot air duct I 15 and hot air duct II 11, this hot blast connecting pipe 2 is provided with pipeline butterfly valve 1, described hot air duct I 15 is provided with thermocouple 4, this thermocouple 4 is connected with automatic temperature control device 3 respectively with described pipeline butterfly valve 1.
Drying grate blasting drying period hot-air system of the present invention, structure is simple, easy construction, refractory material body of wall 6 has been built by laying bricks or stones between drying grate blasting drying period 5 and drying grate down-draft drying zone 7, drying grate blasting drying period 5 and drying grate down-draft drying zone 7 are thoroughly separated, stop the problem that " partition wall heat conduction " brings, drying grate blasting drying period 5 hot-air system of the present invention is incorporated into the part hot blast of central cooler secondary cooling zone 12 in the hot air duct 15 of central cooler three cold section 13, automatically hot air flow is controlled by thermocouple 4 and pipeline butterfly valve 1, by the hot blast temperature manual control in the hot air duct 15 of cold for central cooler three section 13 to 200 ~ 250 DEG C, thus meet the independent dry object of drying grate blasting drying period 5, not only add the drying capacity of forced air drying 5, also reduce the burden of drying grate down-draft drying zone 7.
Claims (1)
1. a drying grate blasting drying period hot-air system, comprise drying grate blasting drying period, drying grate down-draft drying zone, drying grate preheating I section, drying grate preheating II section, cold section of central cooler one, central cooler secondary cooling zone, cold section of central cooler three, cold section of central cooler four, be arranged on the hot air duct I between described drying grate blasting drying period and cold section of central cooler three, be arranged on the hot air duct II between described drying grate preheating I section and central cooler secondary cooling zone, it is characterized in that having built refractory material body of wall by laying bricks or stones between described drying grate blasting drying period and drying grate down-draft drying zone, hot blast connecting pipe is provided with between described hot air duct I and hot air duct II, this hot blast connecting pipe is provided with pipeline butterfly valve, described hot air duct I is provided with thermocouple, this thermocouple is connected with automatic temperature control device respectively with described pipeline butterfly valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310326731.0A CN103335522B (en) | 2013-07-31 | 2013-07-31 | Drying grate blasting drying period hot-air system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310326731.0A CN103335522B (en) | 2013-07-31 | 2013-07-31 | Drying grate blasting drying period hot-air system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103335522A CN103335522A (en) | 2013-10-02 |
| CN103335522B true CN103335522B (en) | 2015-08-12 |
Family
ID=49243731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310326731.0A Active CN103335522B (en) | 2013-07-31 | 2013-07-31 | Drying grate blasting drying period hot-air system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103335522B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944910A (en) * | 2021-04-02 | 2021-06-11 | 北京首钢国际工程技术有限公司 | Air-channeling-preventing device between drum pumping partition walls of chain grate |
| CN113186390B (en) * | 2021-04-22 | 2023-08-01 | 江苏省沙钢钢铁研究院有限公司 | Hot air system of rotary kiln of chain grate machine |
| CN113188335B (en) * | 2021-04-22 | 2023-12-26 | 江苏省沙钢钢铁研究院有限公司 | Chain grate rotary kiln hot air system suitable for active coke desulfurization and denitrification process |
| CN115574604A (en) * | 2022-09-28 | 2023-01-06 | 江苏鑫润冶金机械制造有限公司 | Sintered pellet chain grate-circular cooler hot air circulating system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2676802B1 (en) * | 1991-05-22 | 1993-09-24 | Siderurgie Fse Inst Rech | DEVICE FOR CAPTURING GASES OR FUMES EMITTED BY AN ELECTRIC OVEN AND ELECTRIC OVEN EQUIPPED WITH SUCH A CAPTURING DEVICE. |
| CN102121786B (en) * | 2011-03-08 | 2012-03-28 | 中冶北方工程技术有限公司 | Hot air system of grate-rotary kiln-circular cooler |
| CN202304414U (en) * | 2011-10-27 | 2012-07-04 | 中冶北方工程技术有限公司 | Hot blast rate-adjustable half wall for grate kiln |
| CN202902860U (en) * | 2012-11-26 | 2013-04-24 | 中冶北方（大连）工程技术有限公司 | Defroster for chain grate drying section chimney |
-
2013
- 2013-07-31 CN CN201310326731.0A patent/CN103335522B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103335522A (en) | 2013-10-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103335522B (en) | Drying grate blasting drying period hot-air system | |
| CN102538479B (en) | Device and method for cooling circulating cooling water | |
| CN203454767U (en) | Forced air drying section hot air system of chain gate | |
| CN104374213B (en) | Heat exchange device for carrying out heat exchange on solid hot material | |
| CN103779049A (en) | Heat pump type main-transformation heat-exchanging device with SF6 (sulfur hexafluoride) as heat-exchanging medium and heat-exchanging method | |
| CN204141697U (en) | The heating plant of a kind of temperature controller and boiler coordinated signals | |
| CN207945969U (en) | A kind of folded warm recovery system of ceramic kiln rapid cooling low temp area waste heat | |
| CN206222286U (en) | Heat energy recycle device is used in a kind of foamed production | |
| CN204757701U (en) | Energy -conserving kiln of waste heat utilization and balanced rapid cooling amount of wind | |
| CN105352329A (en) | Energy-saving kiln capable of utilizing waste heat and balancing snap-cooling air volume | |
| CN203323580U (en) | Device preventing blast drying section emission chimney of chain grate from dewing | |
| CN207501705U (en) | The energy conserving system that a kind of super wide roller kiln slow cooling high-temperature residual heat recycles | |
| CN205332788U (en) | Lithium electricity material kiln with novel heat sink | |
| CN205473861U (en) | It mixes wind device to spout formula offset in hot -blast standpipe on using | |
| CN203342903U (en) | Energy-saving and emission-reduction device used for industrial vertical mill | |
| CN203706797U (en) | Heat pump type main transformer heat exchange device with SF6 medium as heat exchange medium | |
| CN203665941U (en) | Hot air reflowing heating box and formed composite tube hot air reflowing heating device | |
| CN103029928B (en) | Carbon-containing refractory product particle storage and heating device | |
| CN203147894U (en) | Radiator structure used on heating and ventilation automatic control system | |
| CN204718422U (en) | A kind of furnace cupola of waste heat recovery | |
| CN206113538U (en) | Day shape disk hot air drying stove | |
| CN204128286U (en) | Vacuum drying tank accelerate cooling system | |
| CN207019209U (en) | A kind of cooling cycle system of non-woven fabrics job shop | |
| CN206503976U (en) | A kind of freezing valve for spinning solution break-make | |
| CN205687569U (en) | A kind of for crystalline silicon reduction furnace pre-warmed to mixed raw material gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |