CN204555718U - Cement kiln end waste gas dries coal mill deliming system - Google Patents
Cement kiln end waste gas dries coal mill deliming system Download PDFInfo
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- CN204555718U CN204555718U CN201520190588.1U CN201520190588U CN204555718U CN 204555718 U CN204555718 U CN 204555718U CN 201520190588 U CN201520190588 U CN 201520190588U CN 204555718 U CN204555718 U CN 204555718U
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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 discloses a kind of cement kiln end waste gas and dry coal mill deliming system, include kiln tail preheater, boiler of power generation by waste heat, coal dust dries mill, boiler of power generation by waste heat and coal dust are provided with high-temperature closed bag soot blower in flue between drying and grinding, dry waste gas air-introduced machine, high-temperature closed bag soot blower carries out deashing by air compressor machine, ash under high-temperature closed bag soot blower removes is delivered to raw material system by the conveyer of spiral, coal dust is dried mill and is connected with coal mill dust-precipitator, the discharging opening of coal mill dust-precipitator is connected to Pulverized Coal Bin, on coal mill dust-precipitator, air outlet place is provided with mill tail blower fan.The utility model improves the calorific value of coal dust, reduces the hear rate of grog, the manufacture of cement cost simultaneously reduced.
Description
technical field:
The utility model relates to and utilizes cement kiln end high-temp waste gas to utilize field, specifically belongs to cement kiln end waste gas and dries coal mill deliming system.
Background technology
All there is energy-saving and cost-reducing requirement in current manufacture of cement, has reached and reduced costs, and saves the energy.The oven dry of traditional manufacture of cement coal mill system, utilizes cement kiln end high-temp waste gas to dry, but containing a large amount of dust 80 ~ 100g/m in waste gas
3.If do not removed in advance, will be incorporated in coal dust, reducing calorific value.In order to not affect hear rate, traditional technique utilizes cyclone ash removal device, can remove the ash of about 80%, but now along with energy-conservation requirement, during single removing 80% grey, still have the ash of 20% that the ash content of coal of coal dust also can be made to increase by 3%, affect calorific value about 300 cal/g.
Utility model content
When the utility model is intended to overcome cement kiln end exhaust gas utilization, original ash is large, and affects the shortcoming of coal dust calorific value, provide a kind of cement kiln end waste gas and dry coal mill deliming system, improve the calorific value of coal dust, reduce the hear rate of grog, the manufacture of cement cost simultaneously finally also reduced.
The technical solution of the utility model is as follows:
A kind of cement kiln end waste gas dries coal mill deliming system, include kiln tail preheater, boiler of power generation by waste heat, coal dust oven dry mill, boiler of power generation by waste heat and coal dust are provided with high-temperature closed bag soot blower in flue between drying and grinding, dry waste gas air-introduced machine, high-temperature closed bag soot blower carries out deashing by air compressor machine, ash under high-temperature closed bag soot blower removes is delivered to raw material system by the conveyer of spiral, coal dust is dried mill and is connected with coal mill dust-precipitator, the discharging opening of coal mill dust-precipitator is connected to Pulverized Coal Bin, and on coal mill dust-precipitator, air outlet place is provided with mill tail blower fan.
Described waste gas air-introduced machine is controlled by controller.
Described boiler of power generation by waste heat and coal dust are provided with cold air adjusting valve in flue between drying and grinding.
Operation principle of the present utility model:
(1) high-temperature flue gas, from cement kiln end preheater gone out → after waste heat boiler, part high-temperature dust-containing flue gas (dust content 80g/m
3temperature 220 ~ 240 DEG C) → high-temperature closed bag soot blower → dry mill through high-temperature blower → coal dust, as oven dry thermal source → blower fan.
(2), dry after coal dust mill coal dust below enter → Pulverized Coal Bin → cement kiln, the dust burdening of this part coal dust declines 3%, and the calorific value of coal dust can carry 300 cal/g.
(3), bag soot blower heatproof is limited, sometimes needs cold blast sliding valve to regulate.Cold wind → cold blast sliding valve → bag soot blower → blower fan.
The utility model adopts the high temperature close device closed form soot blower of particular design, and replace original cyclone dust collectors, utilize original place simultaneously, increase a set of cold air adjusting valve, and adopt PLC automatically to control, connect with middle DCS of controlling, ash disposal efficiency can reach 99.9%.Air leak rate of air curtain controls 1%, makes ash in coal dust drop to original value, improves calorific value about 300 cal/g of coal dust, after deducting other transformation and operating cost, by daily output 5000 ton per day producting cost accounting, can save the standard coal of about 30 tons every day, be the requirement meeting current energy-saving and emission-reduction.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
See Fig. 1, a kind of cement kiln end waste gas dries coal mill deliming system, include kiln tail preheater 1, boiler of power generation by waste heat 2, coal dust dries mill 8, boiler of power generation by waste heat 2 and coal dust are dried between mill 8 and are provided with high-temperature closed bag soot blower 3 in flue, dry waste gas air-introduced machine 6, high-temperature closed bag soot blower 3 carries out deashing by air compressor machine 12, ash under high-temperature closed bag soot blower 3 removes is delivered to raw material system by the conveyer 5 of spiral, coal dust is dried mill 8 and is connected with coal mill dust-precipitator 9, the discharging opening of coal mill dust-precipitator 9 is connected to Pulverized Coal Bin 11, on coal mill dust-precipitator 9, air outlet place is provided with mill tail blower fan 10.
Waste gas air-introduced machine is controlled by controller, and boiler of power generation by waste heat and coal dust are provided with cold air adjusting valve in flue between drying and grinding.
Original cyclone dust collectors are removed, changes the high-temperature closed soot blower 3 through particular design and waste gas air-introduced machine 6 total head is strengthened 500-1000PA, setting up cold air adjusting valve 4, air compressor machine 12, PLC controller 7.
After system is built up, from preheater 1 high-temperature flue gas out first through boiler of power generation by waste heat 2, part high-temperature flue gas 220 ~ 240 DEG C is again through high-temperature closed soot blower 3 ash disposal efficiency more than 99.9%, neat stress after ash disposal, make a gift to someone coal dust mill 8 as drying hot gas source by air-introduced machine 6, the coal dust the ash content of coal of such process drops to original value, calorific value increase about 300 cal/g.And soot blower 3 except under ash be transferred machine 5 and deliver to raw material system when raw material and use.The wind-warm syndrome and the air quantity that enter soot blower 3 regulate by cold blast sliding valve 4, soot blower carrys out deashing by compressing air compressor machine 12, and automatically controlled by PLC controller 7, this patent technology can be used for new dry process rotary kiln system, calculate by 5000 ton per day large-scale production, about 30 tons standard coals can be saved every day, 9000 tons of standard coals within 1 year, can be saved, aggregate value 9000X600 yuan/ton=5,400,000 yuan, there is very large market.
Claims (3)
1. a cement kiln end waste gas dries coal mill deliming system, it is characterized in that, include kiln tail preheater, boiler of power generation by waste heat, coal dust dries mill, boiler of power generation by waste heat and coal dust are provided with high-temperature closed bag soot blower in flue between drying and grinding, dry waste gas air-introduced machine, high-temperature closed bag soot blower carries out deashing by air compressor machine, ash under high-temperature closed bag soot blower removes is delivered to raw material system by the conveyer of spiral, coal dust is dried mill and is connected with coal mill dust-precipitator, the discharging opening of coal mill dust-precipitator is connected to Pulverized Coal Bin, on coal mill dust-precipitator, air outlet place is provided with mill tail blower fan.
2. cement kiln end waste gas according to claim 1 dries coal mill deliming system, and it is characterized in that, described waste gas air-introduced machine is controlled by controller.
3. cement kiln end waste gas according to claim 1 dries coal mill deliming system, it is characterized in that, described boiler of power generation by waste heat and coal dust are provided with cold air adjusting valve in flue between drying and grinding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520190588.1U CN204555718U (en) | 2015-03-30 | 2015-03-30 | Cement kiln end waste gas dries coal mill deliming system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520190588.1U CN204555718U (en) | 2015-03-30 | 2015-03-30 | Cement kiln end waste gas dries coal mill deliming system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204555718U true CN204555718U (en) | 2015-08-12 |
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ID=53830816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520190588.1U Expired - Fee Related CN204555718U (en) | 2015-03-30 | 2015-03-30 | Cement kiln end waste gas dries coal mill deliming system |
Country Status (1)
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| CN (1) | CN204555718U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113200694A (en) * | 2021-05-26 | 2021-08-03 | 河南省豫鹤同力水泥有限公司 | Production process for reducing coal dilution and clinker heat consumption and improving coal powder heat value |
-
2015
- 2015-03-30 CN CN201520190588.1U patent/CN204555718U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113200694A (en) * | 2021-05-26 | 2021-08-03 | 河南省豫鹤同力水泥有限公司 | Production process for reducing coal dilution and clinker heat consumption and improving coal powder heat value |
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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 |
Granted publication date: 20150812 Termination date: 20180330 |
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| CF01 | Termination of patent right due to non-payment of annual fee |