CN204342823U - A kind of smelting equipment with waste heat recycling system - Google Patents
A kind of smelting equipment with waste heat recycling system Download PDFInfo
- Publication number
- CN204342823U CN204342823U CN201520066574.9U CN201520066574U CN204342823U CN 204342823 U CN204342823 U CN 204342823U CN 201520066574 U CN201520066574 U CN 201520066574U CN 204342823 U CN204342823 U CN 204342823U
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- heat exchanger
- reactor
- still
- waste heat
- recycling system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The utility model relates to a kind of smelting equipment with waste heat recycling system, comprise pre-treatment still, reactor and separating still, wherein, the material outlet of pre-treatment still is connected by material channel with the material inlet of reactor, and separating still is positioned at immediately below reactor; The off-gas recovery passage at pre-treatment still top is connected with the heat exchanger inlet mouth of heat exchanger bottom, heat exchanger water outlet is connected with the water inlet pipe at pre-treatment still top, and the heat exchanger air outlet at heat exchanger top connects and is positioned in the middle part of reactor and/or the intake ducting of bottom.This operation of equipment is strong, less investment, and production cost is low, and the ferronickel nickel content of production is high, can fully by waste heat recovery utilization, and can dust stratification repeatedly in recovered flue gas.
Description
Technical field
The utility model belongs to smelting equipment technical field, is specially a kind of smelting equipment with waste heat recycling system.
Background technology
Current red soil nickel ore blast furnace smelting process investment is large, environmental pollution is serious, coke consumption amount is large, and also cannot realize selective reduction, product is nickeliferous few, and market demand is few, and cost is high.Secondly equipment life is short, and its major cause has that reduction zone temperature is too high, the recovery time is long, body of heater adopts global design, and a certain position of such burner hearth is once damage, and equipment will stop production to overhaul, and nature is just short for work-ing life.
For rotary kiln+mineral hot furnace technique (RKEF), this technology investment is large, and the construction period is long, and Feedstock treating stepped cost is high; Due to moisture content about 35% red soil nickel ore will after drying kiln carries out surface water process, then through rotary kiln baking prereduction, and then drop in mineral hot furnace and carry out nickel-iron smelting, therefore will consume a large amount of coking coal, electric power and suitable cost of labor.Three is rotary kiln to melt direct-reduction red soil nickel ore methods, and this technology utilization revolution cellar for storing things whole process is dewatered to nickel nodulizing, roasting, the Reduction of Oxides such as NiO, FeO, and metal object is assembled, and finally generates and melts the spongy slag inclusion ferronickel granule of state, and then carry out magnetic separation; Fusion process heat energy to burn liberated heat from coal dust (or heavy oil).During rotary kiln for directly reducing smelting ferronickel is produced, equipment is simple, this technique is quite lower at actual production operating rate, comprehensive unit energy consumption consumption is high, though invest little but nickel metal recovery rate is low, cost is high, also not overripened in smelting technology, be not widely used in the middle of actual production at home.
In smelting process, have a large amount of thermal losses and waste gas and produce, how to reduce costs while raising efficiency, when carrying out Waste Heat Reuse and waste gas recovery process, the present invention needs the problem solved.
Summary of the invention
The purpose of this utility model is exactly defect for above-mentioned existence and provides a kind of smelting equipment with waste heat recycling system.This operation of equipment is strong, less investment, and production cost is low, and the ferronickel nickel content of production is high, can fully by waste heat recovery utilization, and can dust stratification repeatedly in recovered flue gas.
A kind of smelting equipment technical scheme with waste heat recycling system of the present utility model is, comprise pre-treatment still, reactor and separating still, wherein, the material outlet of pre-treatment still is connected by material channel with the material inlet of reactor, and separating still is positioned at immediately below reactor; The off-gas recovery passage at pre-treatment still top is connected with the heat exchanger inlet mouth of heat exchanger bottom, heat exchanger water outlet is connected with the water inlet pipe at pre-treatment still top, and the heat exchanger air outlet at heat exchanger top connects and is positioned in the middle part of reactor and/or the intake ducting of bottom.
Temperature of reaction above pre-treatment still is 80-200 DEG C.
Temperature of reaction in reactor is 1120-1380 DEG C.
Temperature in separating still is 1070-1250 DEG C.
The water inlet pipe at pre-treatment still top is communicated with the water spray system being positioned at pre-treatment still inner upper, water spray system is provided with uniform spout hole.
Heat exchanger is oil-to-water heat exchanger, and water-flowing amount is far smaller than air flow, and outlet temperature is 80-95 DEG C, and heat exchanger is up-narrow and down-wide circular platform type, and reactor recovered flue gas by not easily accumulating ashes during heat exchanger on heat exchanger inwall.
Be provided with flue-dust retainer below heat exchanger, dust stratification can be collected at any time.
Heat exchanger air outlet ligation still intake ducting, intake ducting is also connected with air intake pump, and air intake pump passes into intake ducting after being mixed with the high-temperature gas in heat exchanger by oxygen-rich air.
The asbestos washer that 0.8-1.5cm is thick is provided with between reactor and separating still.
Also be provided with expanding layer outside separating still refractory brick, effectively can alleviate the pressure of molten iron to furnace shell.
Pre-treatment still, reactor are all connected with vacuum pump, in pre-treatment still and reactor, adopt negative-pressure operation, and force value is-9.5 ~-9.0Mpa.
A kind of smelting equipment beneficial effect with waste heat recycling system of the present utility model is: this operation of equipment is strong, less investment, and production cost is low, the ferronickel nickel content produced is high, waste heat recovery, at 15-20%, can fully utilize by nickel content in addition, and can dust stratification repeatedly in recovered flue gas.
Pre-treatment still is because fuel is in stove combustion, and furnace charge becomes countercurrent movement with high temperature gas flow, and thus heat exchange conditions is good.A large amount of water vapour evaporations can be produced in stove when the moisture in furnace charge and water spray system constantly moves downward, when moving downward furnace charge, fricative dust serves restraining effect, add in stove and take negative-pressure operation, a large amount of dust can be controlled can not outwards overflow, thus reaching the object of depositing dust dedusting, environment protecting is good.
Reactor furnace charge becomes molten state, and other metals such as most of nickel and a part of iron substantially all start to be reduced into elemental stage in this section, flow into separating still.
Flue gas in reactor enters in the heat exchanger of circular platform type by off-gas recovery passage, and the water entering pre-treatment still can be carried out preheating by one, and the free cigarette ash in flue gas can be carried out sedimentation by two; In addition, pass into reactor after again being heated by oxygen-rich air by the flue gas of heat exchanger, used heat can be recycled further, reduce production cost.
accompanying drawing illustrates:
Figure 1 shows that basic structure schematic diagram of the present utility model.
In figure, 1. pre-treatment still, 2. material channel, 3. reactor, 4. separating still, 5. intake ducting, 6. off-gas recovery passage, 7. heat exchanger, 8. flue-dust retainer, 9. heat exchanger water outlet, 10. heat exchanger air outlet, 11. expanding layer, 12. refractory brick, 13. asbestos washers.
embodiment:
In order to understand the utility model better, describe the technical solution of the utility model in detail with specific examples below, but the utility model is not limited thereto.
Embodiment 1
A kind of smelting equipment with waste heat recycling system of the present utility model, comprise pre-treatment still 1, reactor 3 and separating still 4, wherein, the material outlet of pre-treatment still 1 is connected by material channel 2 with the material inlet of reactor 3, and separating still 4 is positioned at immediately below reactor 3; The off-gas recovery passage 6 at pre-treatment still 1 top is connected with the heat exchanger inlet mouth of heat exchanger 7 bottom, heat exchanger water outlet 9 is connected with the water inlet pipe at pre-treatment still 1 top, and the heat exchanger air outlet 10 at heat exchanger top connects and is positioned in the middle part of reactor 4 and/or the intake ducting 5 of bottom.
Temperature of reaction above pre-treatment still 1 is 80-200 DEG C.
Temperature of reaction in reactor 3 is 1120-1380 DEG C.
Temperature in separating still 4 is 1070-1250 DEG C.
The water inlet pipe at pre-treatment still 1 top is communicated with the water spray system being positioned at pre-treatment still inner upper, water spray system is provided with uniform spout hole.
Heat exchanger 7 is oil-to-water heat exchanger, water-flowing amount is far smaller than air flow, heat exchanger water outlet 9 temperature is 80-95 DEG C, and heat exchanger 7 is in up-narrow and down-wide circular platform type, and reactor 3 recovered flue gas by not easily accumulating ashes during heat exchanger 7 on heat exchanger 7 inwall.
Be provided with flue-dust retainer 8 below heat exchanger 7, dust stratification can be collected at any time.
Heat exchanger air outlet 10 ligation still 3 intake ducting 5, intake ducting 5 is also connected with air intake pump, and air intake pump passes into intake ducting 5 after being mixed with the high-temperature gas in heat exchanger 7 by oxygen-rich air.
The thick asbestos washer of 0.8-1.5cm 13 is provided with between reactor 3 and separating still 4.
Also be provided with expanding layer 11 outside separating still 4 refractory brick 12, effectively can alleviate the pressure of molten iron to furnace shell.
Pre-treatment still 1, reactor 3 are all connected with vacuum pump, in pre-treatment still 1 and reactor 3, adopt negative-pressure operation, and force value is-9.5 ~-9.0Mpa.
Claims (8)
1. with a smelting equipment for waste heat recycling system, it is characterized in that, comprise pre-treatment still, reactor and separating still, wherein, the material outlet of pre-treatment still is connected by material channel with the material inlet of reactor, and separating still is positioned at immediately below reactor; The off-gas recovery passage at pre-treatment still top is connected with the heat exchanger inlet mouth of heat exchanger bottom, heat exchanger water outlet is connected with the water inlet pipe at pre-treatment still top, and the heat exchanger air outlet at heat exchanger top connects and is positioned in the middle part of reactor and/or the intake ducting of bottom.
2. a kind of smelting equipment with waste heat recycling system according to claim 1, is characterized in that, the water inlet pipe at pre-treatment still top is communicated with the water spray system being positioned at pre-treatment still inner upper, water spray system is provided with uniform spout hole.
3. a kind of smelting equipment with waste heat recycling system according to claim 2, is characterized in that, heat exchanger is oil-to-water heat exchanger heat exchanger is up-narrow and down-wide circular platform type.
4. a kind of smelting equipment with waste heat recycling system according to claim 3, is characterized in that, be provided with flue-dust retainer below heat exchanger.
5. a kind of smelting equipment with waste heat recycling system according to claim 4, is characterized in that, heat exchanger air outlet ligation still intake ducting, intake ducting is also connected with air intake pump.
6. a kind of smelting equipment with waste heat recycling system according to claim 5, is characterized in that, be provided with the asbestos washer that 0.8-1.5cm is thick between reactor and separating still.
7. a kind of smelting equipment with waste heat recycling system according to claim 6, is characterized in that, be also provided with expanding layer outside separating still refractory brick.
8. a kind of smelting equipment with waste heat recycling system according to claim 7, it is characterized in that, pre-treatment still, reactor are all connected with vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520066574.9U CN204342823U (en) | 2015-01-30 | 2015-01-30 | A kind of smelting equipment with waste heat recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520066574.9U CN204342823U (en) | 2015-01-30 | 2015-01-30 | A kind of smelting equipment with waste heat recycling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204342823U true CN204342823U (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520066574.9U Expired - Fee Related CN204342823U (en) | 2015-01-30 | 2015-01-30 | A kind of smelting equipment with waste heat recycling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204342823U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106834746A (en) * | 2017-01-19 | 2017-06-13 | 贵州大学 | A kind of forced convertion magnesiothermy titanium sponge production also original system of recyclable waste heat |
-
2015
- 2015-01-30 CN CN201520066574.9U patent/CN204342823U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106834746A (en) * | 2017-01-19 | 2017-06-13 | 贵州大学 | A kind of forced convertion magnesiothermy titanium sponge production also original system of recyclable waste heat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: QINGDAO HENGSHUN ZHONGSHENG GROUP CO., LTD. Free format text: FORMER NAME: QINGDAO EVERCONTAINING ELECTRIC CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 266108 Airport Industrial Park, Liuting street, Chengyang District, Shandong, Qingdao Patentee after: QINGDAO HENGSHUN ZHONGSHENG GROUP CO,. LTD. Address before: 266108 Shandong Province, Qingdao city Chengyang District Airport Industrial Park No. three West Gate Patentee before: Evercontaining Electric Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20210130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |