CN203518639U - Waste heat recovery unit for metallurgical rotary type lime kiln - Google Patents
Waste heat recovery unit for metallurgical rotary type lime kiln Download PDFInfo
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- CN203518639U CN203518639U CN201320489618.XU CN201320489618U CN203518639U CN 203518639 U CN203518639 U CN 203518639U CN 201320489618 U CN201320489618 U CN 201320489618U CN 203518639 U CN203518639 U CN 203518639U
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- waste heat
- heat recovery
- flue
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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 waste heat recovery units for the metallurgical technology and aims to provide a waste heat recovery unit which is high in waste heat utilization rate, safe, friendly to environment and low in cost for a metallurgical rotary type lime kiln. The waste heat recovery unit comprises an original smoke flue and a chimney, and is characterized by further comprising a waste heat recovery smoke flue; the waste heat recovery smoke flue comprises a high-temperature smoke regulating valve, a high-temperature smoke flue valve, a gravity dust collector, a drum, a waste heat boiler and a smoke stop valve; the original smoke flue is connected with the high-temperature smoke regulating valve, the two ends of the high-temperature smoke regulating valve are connected with the high-temperature smoke flue valve, the gravity dust collector, the waste heat boiler and the smoke stop valve in parallel in sequence; the drum is connected with the waste heat boiler through an ascending pipe and a descending pipe.
Description
Technical field
The utility model relates to a kind of lime kiln residual heat recovery device, particularly relates to a kind of swinging lime kiln residual heat recovery device for metallurgical process.
Background technology
The production of China's metallurgy lime has obtained larger progress the eighties in last century, and several large enterprises have started to introduce the rotary kiln of West Germany, Japan, and existing domestic technique is ripe.Qualified lime stone leaves in feed bin, through elevator, promotes and be transported into preheater top feed bin.Preheater top feed bin, controls feeding quantity by upper and lower two level-sensing devices, and each is indoor then by tremie pipe, lime stone to be evenly distributed to preheater.Lime stone by 1150 ℃ of kiln flue gas to 900 ℃ left and right, approximately has 30% decomposition at preheater, and in hydraulic push rod pushes rotary kiln, lime stone is decomposed into CaO and CO through sintering in rotary kiln
2.The lime stone generating after decomposing enters cooler, in cooler, by the chilled air cools to 100 blasting ℃, is discharged below.600 ℃ of hot-airs through heat exchange enter rotary kiln and coal gas mixed combustion.And the waste gas of 300 ℃ of left and right after preheating material is blended into cold wind and enters sack cleaner through air-introduced machine, then enter chimney discharge through exhaust blower.The EGT that uses said method to discharge is very high, has wasted large energy.
Utility model content
The technical problems to be solved in the utility model is to provide that a kind of utilization rate of waste heat is high, safety and environmental protection, metallurgical swinging lime kiln residual heat recovery device that cost is low.
The metallurgical swinging lime kiln residual heat recovery device of the utility model, comprise former flue and chimney, it is characterized in that: also comprise waste heat reclaiming flue, described waste heat reclaiming flue comprises high-temperature flue gas control valve, high-temperature flue valve, gravitational precipitator, drum, waste heat boiler and flue gas stop valve, on former flue, be connected with high-temperature flue gas control valve, described high-temperature flue gas control valve two ends are parallel with high-temperature flue valve, gravitational precipitator, waste heat boiler and flue gas stop valve successively, and described drum is connected with waste heat boiler with down-comer by tedge.
The metallurgical swinging lime kiln residual heat recovery device of the utility model, is provided with air-cooler between wherein said high-temperature flue gas control valve and chimney.
The metallurgical swinging lime kiln residual heat recovery device of the utility model, is provided with sack cleaner between wherein said air-cooler and chimney.
The metallurgical swinging lime kiln residual heat recovery device of the utility model, is provided with smoke induced draught fan between wherein said sack cleaner and chimney.
The metallurgical swinging lime kiln residual heat recovery device of the utility model difference from prior art is that the metallurgical swinging lime kiln residual heat recovery device of the utility model effectively utilizes flue gas waste heat, produce more high-grade saturated vapor or superheated steam, the utilization rate of waste heat of flue gas is reached more than 50%, really realize industry energy conservation consumption reduction and reduce the object of discharging.
Below in conjunction with accompanying drawing, metallurgical swinging lime kiln residual heat recovery device of the present utility model is described further.
Accompanying drawing explanation
Fig. 1 is the structural representation of the metallurgical swinging lime kiln residual heat recovery device of the utility model.
The specific embodiment
As shown in Figure 1, the metallurgical swinging lime kiln residual heat recovery device of the utility model comprises former flue 1, waste heat reclaiming flue 2 and chimney 12.High-temperature flue gas control valve 5, air-cooler 9, sack cleaner 10, smoke induced draught fan 11 and chimney 12 are installed on former flue 1 successively, at former flue 1 high-temperature flue gas control valve 5 and air-cooler 9 both sides, be parallel with waste heat reclaiming flue 2, on waste heat reclaiming flue 2, be connected with high-temperature flue valve 6, gravitational precipitator 7, waste heat boiler 3, economizer 4 and flue gate valve 8 in turn, waste heat boiler 3 is connected drum 33 by down-comer 31 with tedge 32, the import of economizer 4 connects boiler feed pipe, and outlet is connected with drum 33 by outlet pipe.Wherein gravitational precipitator 7 can reclaim 70 microns of above big dust particles, and the rate of recovery reaches 50%, to reduce the erosive wear of heat exchanger and the load of sack cleaner; Waste heat boiler 3 and economizer 4 adopt hot pipe technique to do heat transfer element, have both realized high efficient heat exchanging under Low Temperature Difference, the dew point corrosion problem of avoiding again flue gas low-temperature discharge to cause, and the while is control system resistance effectively.
During the work of kiln device for recovering excess heat of flue gas, first open high-temperature flue valve 6 and flue gate valve 8 on waste heat reclaiming flue 2, close high-temperature flue gas control valve 5 and air-cooler 9 on former flue 1.The high-temperature flue gas of 300 ℃ of left and right of kiln tail, by entering waste heat boiler 3 after gravitational precipitator 7 dedustings on waste heat reclaiming flue 2, water in drum 33 enters waste heat boiler 3 simultaneously, high-temperature flue gas and water carry out lowering the temperature after heat exchange, water after being heated is back to drum 33, once the flue gas after cooling enters economizer 4, boiler feedwater simultaneously enters economizer 4, heat exchange is carried out in flue gas and boiler feedwater, low-temperature flue gas after heat release enters former flue 1 through flue gate valve 8 again, discharges successively by sack cleaner 10, smoke induced draught fan 11 and chimney 12.
Above-described embodiment is described preferred embodiment of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model, all should fall in the definite protection domain of the utility model claims.
Claims (4)
1. a metallurgical swinging lime kiln residual heat recovery device, comprise former flue and chimney, it is characterized in that: also comprise waste heat reclaiming flue, described waste heat reclaiming flue comprises high-temperature flue gas control valve, high-temperature flue valve, gravitational precipitator, drum, waste heat boiler and flue gas stop valve, on former flue, be connected with high-temperature flue gas control valve, described high-temperature flue gas control valve two ends are parallel with high-temperature flue valve, gravitational precipitator, waste heat boiler and flue gas stop valve successively, and described drum is connected with waste heat boiler with down-comer by tedge.
2. metallurgical swinging lime kiln residual heat recovery device according to claim 1, is characterized in that: between described high-temperature flue gas control valve and chimney, air-cooler is installed.
3. metallurgical swinging lime kiln residual heat recovery device according to claim 2, is characterized in that: between described air-cooler and chimney, sack cleaner is installed.
4. metallurgical swinging lime kiln residual heat recovery device according to claim 3, is characterized in that: between described sack cleaner and chimney, smoke induced draught fan is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320489618.XU CN203518639U (en) | 2013-08-12 | 2013-08-12 | Waste heat recovery unit for metallurgical rotary type lime kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320489618.XU CN203518639U (en) | 2013-08-12 | 2013-08-12 | Waste heat recovery unit for metallurgical rotary type lime kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203518639U true CN203518639U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320489618.XU Expired - Fee Related CN203518639U (en) | 2013-08-12 | 2013-08-12 | Waste heat recovery unit for metallurgical rotary type lime kiln |
Country Status (1)
| Country | Link |
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| CN (1) | CN203518639U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826962A (en) * | 2018-07-31 | 2018-11-16 | 广西锰华新能源科技发展有限公司 | All-metal structure restores fast-assembling metallurgical equipment |
| CN114739194A (en) * | 2022-05-19 | 2022-07-12 | 山西太钢工程技术有限公司 | Lime kiln hood flue gas waste heat utilization system |
-
2013
- 2013-08-12 CN CN201320489618.XU patent/CN203518639U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826962A (en) * | 2018-07-31 | 2018-11-16 | 广西锰华新能源科技发展有限公司 | All-metal structure restores fast-assembling metallurgical equipment |
| CN114739194A (en) * | 2022-05-19 | 2022-07-12 | 山西太钢工程技术有限公司 | Lime kiln hood flue gas waste heat utilization system |
| CN114739194B (en) * | 2022-05-19 | 2023-11-21 | 山西太钢工程技术有限公司 | Kiln head flue gas waste heat utilization system of lime kiln |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20190812 |