CN203464764U - Bypass wind relieving system of cement kiln - Google Patents
Bypass wind relieving system of cement kiln Download PDFInfo
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- CN203464764U CN203464764U CN201320501389.9U CN201320501389U CN203464764U CN 203464764 U CN203464764 U CN 203464764U CN 201320501389 U CN201320501389 U CN 201320501389U CN 203464764 U CN203464764 U CN 203464764U
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- cement
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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
Abstract
The utility model relates to a bypass wind relieving system of a cement kiln, which is characterized in that after bypass smoke discharged from a kiln tail smoke chamber of the cement kiln is subjected to heat exchange by a mixing chamber for cooling, the smoke passes by a cyclone separation device, more than 80% of dust enters a bypass ash bin, gas discharged from the cyclone separation device and smoke separated from the top of a kiln tail are mixed, then jointly enter a waste heat boiler of the kiln tail to be subjected to waste heat power generation, and ash being separated from the cyclone separation device and entering the bypass ash bin is conveyed to a cement grinding mill for being subjected to cement distributing or conveyed via automobile bulk shipment to leave a factory to be treated. The quantity of chlorine in ash and chlorine in RDF brought into the cement kiln is reduced, the smoke chamber is prevented from skinning and being blocked, and a bypass is fully utilized for extracting waste heat of the smoke; the bypass wind relieving system is more flexible in type selection, high in adaptability and greatly reduced in cost.
Description
Technical field
The utility model relates to Prediction for Solid Waste Treatment Technology field, specially refers to a kind of bypass system of utilizing cement kiln associated treatment domestic waste.
Background technology
cooperative disposal domestic waste in cement industry, is generally that primary house refuse is become to RDF after drying and dehydrating, sends in dore furnace burning or directly house refuse is sent into gasification furnace gasification then to enter dore furnace and burn.
In traditional mode of production process, because harmful element volatilizees, cause skinning and obstruction, thereby have influence on the normal operation of quality coal in cement kiln systems, generally need to adopt bypass system that kiln exit gas is emitted outside kiln.Cement kiln synergic processing domestic waste has inborn advantage, and disposal process does not produce bioxin, does not produce garbage flying ash; But domestic waste to the negative effect of cement kiln is: the chlorinity in house refuse is high, easily in the circulation enrichment of kiln tail smoke-box place, causes skinning and obstruction, and then affects the stable operation of kiln system.Current cement kiln, substantially all with low-temperature cogeneration device, if still simply apply mechanically traditional bypass system, can cause the waste of the energy, and increases the investment of fixed assets.
In addition, existing cement kiln bypass device, its technological process is mainly: the cold wind that the flue gas that cement rotary kiln tail smoke-box is emitted through bypass blasts with cooling blower is in mixing chamber mixing quenching to 400 ℃ left and right, by cooling blower, carry out heat exchange again flue gas is cooled to below 250 ℃, finally by bag filter, process discharge; Long-term practical application proves, this bypass technological process not only increases the investment cost of equipment and civil engineering, and because the loss of manufacture of cement hear rate and material consumption increases the cost of production run.Another kind of be that flue gas that cement rotary kiln tail smoke-box is emitted through bypass is inputted kiln tail waste heat boiler after by sedimentation separation and generated electricity, its weak point is: by containing a large amount of dust in the flue gas after sedimentation, because flue gas in boiler heat exchange process contains a large amount of dusts, can impact the operation of kiln tail waste heat boiler, finally affect the stable operation of cement production system.
Utility model content
The technical problems to be solved in the utility model is, for the above-mentioned defect of prior art and a kind of cement kiln bypass technique and system are provided, can reduce the amount that in lime-ash, in chlorine and RDF, chlorine is brought cement kiln into, and reduce RDF calcining zone CL content, reduce the generation of bioxin; Prevent smoke-box Coating clogging, and make full use of bypass extraction fume afterheat; Bypass systematic lectotype is more flexible simultaneously, and strong adaptability cost significantly reduces.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A cement kiln bypass system, is characterized in that: kiln tail smoke-box arranges bypass exhaust gases passes, and bypass exhaust gases passes is communicated with cyclone separator through mixing chamber; Cyclone separator gas vent is communicated with kiln tail waste heat boiler; Cyclone separator dust export is communicated to bypass ash silo; Dore furnace is communicated with bottom cement kiln tail smoke-box, and dore furnace top main flue gas outlet is communicated with preheater multistage cyclone cylinder; The exhanst gas outlet of preheater multistage cyclone cylinder leads to kiln tail waste heat boiler.
By technique scheme, described mixing chamber up forms inclination angle and is arranged on kiln tail smoke-box wall, and is communicated with cement kiln tail smoke-box; The mixing chamber other end is communicated with cyclone separator and refrigerating gas input channel respectively.
By technique scheme, the cooling blower of refrigerating gas input channel is connected to the mixing chamber being communicated with kiln tail smoke-box by gas flowmeter and fast gas stop valve.
By technique scheme, fast gas stop valve is set between mixing chamber and cyclone separator; Between cyclone separator and bypass dust, revolution air valve is set; Between cyclone separator and kiln tail waste heat boiler, electric louver valve is set.
The technique of leaking informaton of said system, is characterized in that: the bypass flue gas that cement kiln tail smoke-box is discharged through mixing chamber carry out heat exchange cooling after, flue gas is through cyclone separator, more than 80% dust enters bypass ash silo; The gas of discharging from cyclone separator carries out cogeneration with together enter kiln tail waste heat boiler from the isolated flue gas in cement kiln tail top mixes; Separated and enter the ash of bypass ash silo from cyclone separator, be delivered to cement grinding mill and carry out cement ingredient or load the transportation processing of dispatching from the factory in bulk through automobile.
By technique scheme, bypass flue gas is in the process of mixing chamber, and refrigerating gas leads to mixing chamber through refrigerating gas input channel and carries out heat exchange.
With respect to prior art, the utlity model has following beneficial effect:
In bypass system, due to bypass flue gas and cement kiln main flue gas are sent into kiln tail waste heat boiler simultaneously, waste heat is produced steam and is utilized it to generate electricity by boiler, and cement kiln waste gas cogeneration ability is given full play to.The layout of the utility model technological process is simultaneously simple, stable operation, the skinning and the obstruction that in the time of not only can effectively reducing harmful element to cement kiln associated treatment domestic waste, cause, but also can reduce equipment investment and fully utilize thermal source, and reduce RDF calcining zone CL content, reduce the generation of bioxin; Thereby reach the object of energy-saving and cost-reducing and stable operation kiln tail waste heat boiler system.
Accompanying drawing explanation
Fig. 1 is cement kiln bypass system architecture sketch of the present utility model.
In figure: 1-dore furnace; 2-kiln tail smoke-box; 3-multistage cyclone cylinder; 4-cooling blower; 5-gas flowmeter; 6-fast gas stop valve; 7-mixing chamber; 8-fast gas stop valve; 9-cyclone cylinder; 10-turns round air valve; 11-bypass ash silo; 12-electric louver valve; 13-kiln tail waste heat boiler.
The specific embodiment
For understanding better the utility model, below in conjunction with drawings and Examples, the utility model will be further described.
As shown in Figure 1, be cement kiln bypass system architecture sketch.The main body of cement kiln bypass system is communicated with the kiln tail smoke-box 2 of dore furnace 1 and dore furnace 1 bottom respectively, and dore furnace 1 main body is communicated with bottom kiln tail smoke-box 2; Dore furnace 1 top main flue gas outlet is communicated with preheater multistage cyclone cylinder 3, and kiln tail smoke-box 2 arranges bypass exhaust gases passes, and bypass exhaust gases passes is communicated with cyclone separator 9 through mixing chamber 7; Cyclone separator 9 gas vents are communicated with kiln tail waste heat boiler 13; Cyclone separator 9 dust exports are communicated to bypass ash silo 11.
The bypass flue gas that cement kiln tail smoke-box 2 is discharged through mixing chamber 7 carry out heat exchange cooling after, flue gas drains into cyclone separator 9, dust drains back to bypass ash silo 11; The main flue gas of discharging from dore furnace 1 top enter by multistage cyclone cylinder (as Fig. 3 five-stage whirlwind cylinder) carry out flue gas separation in the preheater that forms, the gas from the separation of preheater flue gas is inputted kiln tail waste heat boiler 13 mixing with the gas of discharging from cyclone separator 9 and is carried out cogeneration; The dust of discharging from cyclone separator 9 enters bypass ash silo 11, and an ash part for bypass ash silo 11 is delivered to cement grinding mill and carries out cement ingredient, and another part is loaded transportation in bulk through automobile and dispatched from the factory.
In Fig. 1, between mixing chamber 7 and cyclone separator 9, fast gas stop valve 8 is set; Revolution air valve 10 is set between cyclone separator 9 and bypass dust 11; Between cyclone separator 9 and kiln tail waste heat boiler 13, electric louver valve 12 is set.
By technique scheme, kiln tail smoke-box 2 is also communicated with mixing chamber 7, and the cooling blower 4 of refrigerating gas input channel is connected to the mixing chamber 7 being communicated with kiln tail smoke-box 2 by gas flowmeter 5 and fast gas stop valve 6.
Between dore furnace 1 and kiln tail smoke-box 2 connecting portions, tertiary air and coal import are set.
Above disclosed is only preferred embodiment of the present utility model, and the equivalence of doing according to the utility model changes, and still belongs to protection domain of the present utility model.
Claims (4)
1. a cement kiln bypass system, is characterized in that: kiln tail smoke-box arranges bypass exhaust gases passes, and bypass exhaust gases passes is communicated with cyclone separator through mixing chamber; Cyclone separator gas vent is communicated with kiln tail waste heat boiler; Cyclone separator dust export is communicated to bypass ash silo; Dore furnace is communicated with bottom cement kiln tail smoke-box, and dore furnace top main flue gas outlet is communicated with preheater multistage cyclone cylinder; The exhanst gas outlet of preheater multistage cyclone cylinder leads to kiln tail waste heat boiler.
2. cement kiln bypass system according to claim 1, is characterized in that: described mixing chamber up forms inclination angle and is arranged on kiln tail smoke-box wall, and is communicated with cement kiln tail smoke-box; The mixing chamber other end is communicated with cyclone separator and refrigerating gas input channel respectively.
3. cement kiln bypass system according to claim 2, is characterized in that: the cooling blower of refrigerating gas input channel is connected to the mixing chamber being communicated with kiln tail smoke-box by gas flowmeter and fast gas stop valve.
4. according to the cement kiln bypass system one of claim 1-3 Suo Shu, it is characterized in that: fast gas stop valve is set between mixing chamber and cyclone separator; Between cyclone separator and bypass dust, revolution air valve is set; Between cyclone separator and kiln tail waste heat boiler, electric louver valve is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320501389.9U CN203464764U (en) | 2013-08-16 | 2013-08-16 | Bypass wind relieving system of cement kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320501389.9U CN203464764U (en) | 2013-08-16 | 2013-08-16 | Bypass wind relieving system of cement kiln |
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| Publication Number | Publication Date |
|---|---|
| CN203464764U true CN203464764U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320501389.9U Expired - Lifetime CN203464764U (en) | 2013-08-16 | 2013-08-16 | Bypass wind relieving system of cement kiln |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224996A (en) * | 2016-09-22 | 2016-12-14 | 成都建筑材料工业设计研究院有限公司 | A kind of instability eliminating cement kiln burning waste is harmful to the system of chlorine |
-
2013
- 2013-08-16 CN CN201320501389.9U patent/CN203464764U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224996A (en) * | 2016-09-22 | 2016-12-14 | 成都建筑材料工业设计研究院有限公司 | A kind of instability eliminating cement kiln burning waste is harmful to the system of chlorine |
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| GR01 | Patent grant | ||
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Granted publication date: 20140305 |