CN204063993U - The bypass device of cement kiln associated treatment rubbish - Google Patents
The bypass device of cement kiln associated treatment rubbish Download PDFInfo
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- CN204063993U CN204063993U CN201420434706.4U CN201420434706U CN204063993U CN 204063993 U CN204063993 U CN 204063993U CN 201420434706 U CN201420434706 U CN 201420434706U CN 204063993 U CN204063993 U CN 204063993U
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The bypass device of cement kiln associated treatment rubbish, comprise bypass flue, temperature adjustment blower fan, described bypass flue comprises high temperature airduct, spiral case I and spiral case II, high temperature airduct is divided into spiral case I section, oxidation panel, spiral case II section, middle-temperature section, spiral case I is located on spiral case I section, spiral case II is located on spiral case II section, described temperature adjustment blower fan is through low temperature airduct I, be connected with spiral case I after low temperature airduct II, described temperature adjustment blower fan is through low temperature airduct I, be connected with shell II after low temperature airduct III, the middle-temperature section of the high temperature airduct of bypass flue is provided with the flue air-valve for ending and adjust bypass amount.The utility model structure is simple, take up room little, investment in technological upgrading is little, automatically can eliminate high temperature skinning condition and airduct dust stratification that in time cleaning is possible and get air port sticky stifled, thoroughly can eliminate the waste incineration hydrocarbon of after-flame and the cement kiln carbon granules of after-flame and carbon monoxide in time in time.
Description
Technical field
The utility model relates to a kind of bypass device of cement kiln associated treatment rubbish.
Background technology
Bypass is carried out at decomposition kiln kiln tail smoke-box, be at present both at home and abroad major measure that the alkali content institute Bian in reduction grog gets, it is exactly the decomposition kiln kiln tail smoke-box in the most enrichment of alkali content, extract one flue gas out, kiln ash higher for alkali content in flue gas is ejected, thus reduces the alkali content in grog.But bypass both domestic and external, all exists in exiting flue gas airduct, the problem of kiln ash adhesion blocking, finally causes both at home and abroad cement production enterprise mostly to have to abandon bypass.
Cement kiln bypass electricity generation boiler disclosed in CN102519268A introduces technique and device thereof containing alkali flue gas, adopt transformation kiln tail smoke-box, and kiln tail smoke-box is got air port airduct be divided into huge four sections: first paragraph gets 3 meters, air port section space installing dustproof chain smoke-box is improved, to control the extraction of the dustiness in flue gas, Dust Capacity controls within 15 tons/hour; Second segment connect vertically upward 90 degree the low wind speed airduct of cylindrical vertical of diameter 3 meters is set and adds air bubble; 3rd section of setting folds down inclination angle > 45
°the high speed airduct of the diameter 1.6 meters at angle; 4th section connects 2.4 meters of expanding airducts, and install air high pressure nozzle in diameter 2.4 mitron, with ad hoc roots blower air blast, be cooled to 600 DEG C.The method and device on the one hand technology innovation project amount are large, the large in-site installation pole predicament in the space occupied and investment is large, on the other hand, high temperature resistant (>=1200 DEG C) chain of anti-gray is easily denuded, and actual anti-gray effect is not had for smoke-box ultrafine dust, 900 ~ 1200 DEG C in fact chain can adhere to a large amount of containing alkali fusion ash, (namely Japanese a kind of patent processing method is hang high temperature resistant stainless steel chain to adhere to molten caustic soda at smoke-box and air outlet, then take out and remove sode ash, insert again and take out again), more importantly, the uncombusted thing in rear high temperature section (first to the 3rd section) airduct of outlet can not be eliminated, as coal grain and hydrocarbon and carbon monoxide, the reducing atmosphere in high temperature airduct can not be eliminated, the reduction sticking problem under high temperature can not be solved, that is: reduction can not be solved sticky stifled, thoroughly can not eliminate the hydrocarbon of not timely after-flame in waste incineration and cause secondary pollution.
Cement kiln bypass system disclosed in cement kiln bypass technique disclosed in CN103486867A and system and CN203464764U, for reducing chlorinity in grog, at kiln tail smoke-box, bypass system is set, the bypass flue gas that cement kiln tail smoke-box is discharged carries out after heat exchange cooling through mixing chamber, flue gas is through cyclone separator, the dust of more than 80% enters bypass ash silo, and the gas of discharging from cyclone separator carries out cogeneration with together entering kiln tail waste heat boiler after the isolated flue gas mixing in cement kiln tail top; Its mixing chamber is arranged on kiln tail smoke-box wall with up forming inclination angle, and is communicated with cement kiln tail smoke-box; The mixing chamber other end is communicated with refrigerating gas input channel with cyclone separator respectively.Also be provided with gas flowmeter and fast gas stop valve.The new cement designer of warp-wise China examines its mixing chamber flue gas and is directly cooled to about 400 DEG C and merges with kiln tail preheater 340 DEG C of waste gas and enter kiln tail SP waste heat boiler.The method and device chlorinity in reduction grog has certain effect, and can be used to be incorporated to kiln tail SP Waste Heat Generation, but still the sticky of the unresolved mouthful pipeline that leaks informaton blocks up problem first, second in unresolved bypass pipeline, the active combustion of uncompleted burned carbon and hydrocarbon and carbon monoxide is complete, reducing atmosphere can not be eliminated fast, can not thoroughly solve smoke secondary pollution problem to cement kiln associated treatment rubbish, and cause coal consumption slightly to be risen.
A kind of bypass technological process disclosed in CN102636038A, is directly extract 3 ~ 6% of waste gas total amount in kiln from kiln tail smoke-box, enters kiln tail SP or PH waste heat boiler, then bag dust collector dedusting discharged after expansion chamber.This technological process and device can not solve the sticky stifled problem of bypass first, second can not solve the quick after-flame problem at kiln tail smoke-box uncombusted carbon granules and hydrocarbon and carbon monoxide in time, can not solve the secondary pollution problem in waste incineration.
" technological design of bypass system " [new century cement Leader (the 6th phase in 2007)], " process study of firing system bypass device and development and Design " [cement works (first phase in 2008)], " calculating of bypass system and technological process " (author Wang Shiqun, Zhu Bing) and " SFL cement firing system garbage incineration technology " [Chinese cement (2013.10)] Series Design investigation and application, for the alkali reduced in grog, chlorine, sulfur content creates positive meaning, but one is fundamentally do not solve bypass to glue stifled serious main cause--reducing atmosphere aggravation powder sticks, two is can not effectively solve when cement kiln is burnt away the refuse with the hydrocarbon of bypass discharge and the secondary pollution problem of carbon monoxide, three is easily sticking the ad-hoc location of material without Automatic clearance measure.
Utility model content
Technical problem to be solved in the utility model is, overcome the above-mentioned defect that prior art exists, provide during a kind of cement kiln associated treatment rubbish and automatically can remove the bypass device that bypass flue glues rubbish uncompleted burned carbon hydrogen compound and unburned carbon in stifled and flue gas.
The utility model solves the technical scheme that its technical problem adopts:
The bypass device of cement kiln associated treatment rubbish, comprise bypass flue, temperature adjustment blower fan, described bypass flue comprises high temperature airduct, spiral case I and spiral case II, high temperature airduct is divided into spiral case I section, oxidation panel, spiral case II section, middle-temperature section, spiral case I is located on spiral case I section, spiral case II is located on spiral case II section, described temperature adjustment blower fan is through low temperature airduct I, be connected with spiral case I after low temperature airduct II, described temperature adjustment blower fan is through low temperature airduct I, be connected with shell II after low temperature airduct III, the middle-temperature section of the high temperature airduct of bypass flue is provided with the flue air-valve for ending and adjust bypass amount.
Further, described high temperature airduct inwall is provided with insulating refractory layer.
Further, the oxidation panel of described high temperature airduct is provided with air bubble I and thermocouple I, the middle-temperature section of high temperature airduct is provided with air bubble II and thermocouple II, to get skinning possible in air port place and high temperature airduct sticky stifled for automatically removing smoke-box for air bubble I and air bubble II, and thermocouple I, thermocouple II are for automatically detecting the hot blast temperature of high temperature airduct internal oxidition section and middle-temperature section; High temperature airduct is also provided with online pressure detecting instrument, is used for detecting the blast in high temperature airduct.
Further, described low temperature airduct II is provided with temperature adjustment air-valve II, and temperature adjustment air-valve II is for ending and adjusting the low temperature air quantity, blast and the wind speed that enter spiral case I; Low temperature airduct III is provided with temperature adjustment air-valve III, and temperature adjustment air-valve III is for ending and adjusting the low temperature air quantity, blast and the wind speed that enter spiral case II; Low temperature airduct I is provided with temperature adjustment air-valve I, and temperature adjustment air-valve I is for ending and adjusting the low warm air total blast volume, blast and the wind speed that enter spiral case I and spiral case II.
Further, high temperature airduct head end is provided with gets air port, and get air port and be arranged on the kiln tail smoke-box of cement kiln by the circumferential side wall top above rotary kiln side, bypass flue is connected with kiln tail smoke-box; Bypass flue end is connected with rotoclone collector, waste heat boiler successively by connecting pipe.
About 1100 DEG C of high temperature reducing atmosphere flue gases in the high temperature airduct of bypass flue are entered from getting air port, wrapped up completely containing oxygen air (normal temperature to 300 DEG C) by low temperature completely in spiral case I, described low temperature carrys out self-temperature-regulating blower fan through low temperature airduct I containing oxygen air, low temperature airduct II is sent in spiral case I, on the one hand, due to entering containing oxygen air, at oxidation panel more than 600 DEG C uncompleted burned carbon hydrogen compounds and a small amount of uncombusted carbon granules and the rapid after-flame of carbon monoxide, reducing atmosphere is eliminated, remove the secondary pollution that waste incineration is possible, under being in oxidizing atmosphere in high temperature airduct, alleviate the sticky wall skinning of material to greatest extent, on the other hand, high-temperature flue gas has no chance to contact wall, fundamentally solves the sticky wall sheeting problems of material in spiral case I upper pyrometer airduct, combustible is through the oxidation panel high-temperature oxydation afterburnt of high temperature airduct, the oxygen gas of higher temperature (>=600 DEG C) enters spiral case II, to be wrapped up and hybrid cooling to 400 DEG C the ~ middle temperature of 500 DEG C completely by Cryogenic air (normal temperature to 300 DEG C) in spiral case II, the chlor-alkali sulphur zinc lead that cohesion solidification enters in flue waits nuisance, and the high-load nuisance fine powder of cohesion enters rotoclone collector with drawing wind, described Cryogenic air is carried out self-temperature-regulating blower fan 2 and is sent in spiral case II through low temperature airduct I, low temperature airduct III, that automatically removes smoke-box at the air bubble I of oxidation panel and middle-temperature section and air bubble II gets possible dust stratification and skinning in air port and high temperature airduct, flue gas from bypass flue out after, carry out dedusting through sending into rotoclone collector with connecting pipe, finally fume afterheat can be supplied waste heat boiler.
The bypass device of the cement kiln associated treatment rubbish of the utility model can be used on existing cement kiln low-temperature cogeneration device and bypass TRT, the top of the kiln tail smoke-box be connected with bypass flue is connected with the dore furnace of quality coal in cement kiln systems, kiln system dore furnace is connected with the pre-heating system of kiln system, the material that dore furnace decomposes enters kiln tail smoke-box through the bottom cyclone preheater collection of pre-heating system, kiln tail smoke-box is connected with rotary kiln, the material entering kiln tail smoke-box is directly sent in rotary kiln, material is through 1450 DEG C of high-temperature calcination ripe materials, high temperature chamotte is discharged in the grate-cooler under the kiln head cover be connected with rotary kiln and cools, the hyperthermia radiation heat of rotary kiln shell, the low temperature exhaust heat heat energy of the heat energy of kiln head cover inwall and cooling head row all can collect the low temperature wind-heat energy as temperature adjustment blower fan, be beneficial to the generated energy significantly improving afterheat generating system.
The beneficial effects of the utility model:
1), structure is simple, and take up room little, investment in technological upgrading is little, automatically can eliminate high temperature skinning condition and cleaning is possible in time airduct dust stratification and get air port sticky stifled.
2), thoroughly eliminate the waste incineration hydrocarbon of after-flame and the cement kiln carbon granules of after-flame and the carbon monoxide in time that enter bypass flue in time, be beneficial to environmental protection.
3), effectively can reduce plumbous etc. the content of objectionable impurities element chlor-alkali sulphur zinc in grog, improve clinker quality, and be conducive to the sticky stifled impact of the pre-heating system alleviated cement kiln.
4) when, the bypass device of the cement kiln associated treatment rubbish of the utility model being used for existing cement kiln low-temperature cogeneration device and bypass TRT, waste gas residual heat, kiln shell radiant heat and kiln head cover inwall heat energy that cooling head is arranged all can be used for Waste Heat Generation, utilization rate of waste heat is high, institute has surplus heat and all can be used for generating, can effectively improve cogeneration amount, energy-saving and emission-reduction.
Accompanying drawing explanation
Fig. 1 is the bypass apparatus structure schematic diagram of the cement kiln associated treatment rubbish of the utility model.
In figure, 1-bypass flue, 101-spiral case I, 102-spiral case II, 103-high temperature airduct, 1a-oxidation panel, 1b-middle-temperature section, 1c-spiral case I section, 1d-spiral case II section, 104-air bubble I, 105-thermocouple I, 106-fireclay insulating refractory, 107-air bubble II, 108-thermocouple II, 109-gets air port, 2-temperature adjustment blower fan, 201-temperature adjustment air-valve I, 202-temperature adjustment air-valve II, 203-temperature adjustment air-valve III, 204-low temperature airduct I, 205-low temperature airduct II, 206-low temperature airduct III, 3-flue air-valve, 4-connecting pipe, 5-rotoclone collector, 6-waste heat boiler, 7-kiln tail smoke-box, 701-smoke-box circumferential side wall.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail.With reference to Fig. 1, a kind of bypass device of cement kiln associated treatment rubbish, comprise bypass flue 1, temperature adjustment blower fan 2, described bypass flue 1 comprises high temperature airduct 103, spiral case I 101 and spiral case II 102, high temperature airduct 103 is divided into spiral case I section of 1c, oxidation panel 1a, spiral case II section of 1d, middle-temperature section 1b, spiral case I 101 is located on spiral case I section, spiral case II 102 is located on spiral case II section, described temperature adjustment blower fan 2 is through low temperature airduct I 204, be connected with spiral case I 101 after low temperature airduct II 205, described temperature adjustment blower fan 2 is through low temperature airduct I 204, be connected with shell II 102 after low temperature airduct III 206, the middle-temperature section 1b of the high temperature airduct 103 of bypass flue 1 is provided with the flue air-valve 3 for ending and adjust bypass amount.
Described high temperature airduct 103 inwall is provided with insulating refractory layer 106 fireclay insulating refractory 106.
The oxidation panel 1a of described high temperature airduct 103 is provided with air bubble I 104 and thermocouple I 105, the middle-temperature section 1b of high temperature airduct 103 is provided with air bubble II 107 and thermocouple II 108, to get skinning possible in air port 109 place and high temperature airduct 103 sticky stifled for automatically removing smoke-box 7 for air bubble I 104 and air bubble II 107, thermocouple I 105, thermocouple II 108 is for automatically detecting the hot blast temperature of high temperature airduct 103 internal oxidition section 1a and middle-temperature section 1b, high temperature airduct 103 is also provided with online pressure detecting instrument (not shown), for detecting the blast in high temperature airduct 103.
Described low temperature airduct II 205 is provided with temperature adjustment air-valve II 202, and temperature adjustment air-valve II 202 is for ending and adjusting the low temperature air quantity, blast and the wind speed that enter spiral case I 101; Low temperature airduct III 206 is provided with temperature adjustment air-valve III 203, and temperature adjustment air-valve III 203 is for ending and adjusting the low temperature air quantity, blast and the wind speed that enter spiral case II 102; Low temperature airduct I 204 is provided with temperature adjustment air-valve I 201, and temperature adjustment air-valve I 201 is for ending and adjusting the low warm air total blast volume, blast and the wind speed that enter spiral case I 101 and spiral case II 102.
High temperature airduct 103 head end is provided with gets air port 109, and get air port 109 and be arranged on the kiln tail smoke-box 7 of cement kiln by circumferential side wall 701 top above rotary kiln side, bypass flue 1 is connected with kiln tail smoke-box 7; Bypass flue 1 end is connected with rotoclone collector 5, waste heat boiler 6 successively by after connecting pipe 4.
About 1100 DEG C of high temperature reducing atmosphere flue gases in the high temperature airduct 103 of bypass flue 1 are entered from getting air port 109, wrapped up completely containing oxygen air (normal temperature to 300 DEG C) by low temperature completely in spiral case I 101, described low temperature carrys out self-temperature-regulating blower fan 2 through low temperature airduct I 204 containing oxygen air, low temperature airduct II 205 is sent in spiral case I 101, on the one hand, due to entering containing oxygen air, at oxidation panel more than 600 DEG C uncompleted burned carbon hydrogen compounds and a small amount of uncombusted carbon granules and the rapid after-flame of carbon monoxide, reducing atmosphere is eliminated, remove the secondary pollution that waste incineration is possible, under being in oxidizing atmosphere in high temperature airduct 103, alleviate the sticky wall skinning of material to greatest extent, on the other hand, high-temperature flue gas has no chance to contact wall, fundamentally solves the sticky wall sheeting problems of material in spiral case I 101 upper pyrometer airduct 103, combustible is through the oxidation panel 1a high-temperature oxydation afterburnt of high temperature airduct 103, the oxygen gas of higher temperature (>=600 DEG C) enters spiral case II 102, to be wrapped up and hybrid cooling to 400 DEG C the ~ middle temperature of 500 DEG C completely by Cryogenic air (normal temperature to 300 DEG C) in spiral case II 102, the chlor-alkali sulphur zinc lead that cohesion solidification all enters in flue waits nuisance, and the high-load nuisance fine powder of cohesion enters rotoclone collector with drawing wind, described Cryogenic air is carried out self-temperature-regulating blower fan 2 and is sent in spiral case II 102 through low temperature airduct I 204, low temperature airduct III 206, that automatically removes smoke-box 7 at the air bubble I 104 of oxidation panel 1a and middle-temperature section 1b and air bubble II 107 gets possible dust stratification and skinning in air port 109 and high temperature airduct 103, flue gas from bypass flue 1 out after, carry out dedusting through sending into rotoclone collector 5 with connecting pipe 4, finally fume afterheat can be supplied waste heat boiler 6.
Claims (4)
1. the bypass device of cement kiln associated treatment rubbish, it is characterized in that, comprise bypass flue, temperature adjustment blower fan, described bypass flue comprises high temperature airduct, spiral case I and spiral case II, high temperature airduct is divided into spiral case I section, oxidation panel, spiral case II section, middle-temperature section, spiral case I is located on spiral case I section, spiral case II is located on spiral case II section, described temperature adjustment blower fan is through low temperature airduct I, be connected with spiral case I after low temperature airduct II, described temperature adjustment blower fan is through low temperature airduct I, be connected with shell II after low temperature airduct III, the middle-temperature section of the high temperature airduct of bypass flue is provided with the flue air-valve for ending and adjust bypass amount.
2. the bypass device of cement kiln associated treatment rubbish according to claim 1, is characterized in that, described high temperature airduct inwall is provided with insulating refractory layer.
3. the bypass device of cement kiln associated treatment rubbish according to claim 1 and 2, it is characterized in that, the oxidation panel of described high temperature airduct is provided with air bubble I and thermocouple I, the middle-temperature section of high temperature airduct is provided with air bubble II and thermocouple II, high temperature airduct is also provided with the online pressure detecting instrument for detecting blast in high temperature airduct.
4. the bypass device of cement kiln associated treatment rubbish according to claim 1 and 2, is characterized in that, described low temperature airduct II is provided with the temperature adjustment air-valve II for ending and adjust the low temperature air quantity, blast and the wind speed that enter spiral case I; Low temperature airduct III is provided with the temperature adjustment air-valve III for ending and adjust the low temperature air quantity, blast and the wind speed that enter spiral case II; Low temperature airduct I is provided with the temperature adjustment air-valve I for ending and adjust the low warm air total blast volume, blast and the wind speed that enter spiral case I and spiral case II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420434706.4U CN204063993U (en) | 2014-08-04 | 2014-08-04 | The bypass device of cement kiln associated treatment rubbish |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420434706.4U CN204063993U (en) | 2014-08-04 | 2014-08-04 | The bypass device of cement kiln associated treatment rubbish |
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| CN204063993U true CN204063993U (en) | 2014-12-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225038A (en) * | 2018-04-08 | 2018-06-29 | 天津健威泽节能环保科技股份有限公司 | A kind of cement kiln reduces the air mixing device and cool-down method of high-temperature flue-gas |
| CN108534543A (en) * | 2018-06-07 | 2018-09-14 | 天津水泥工业设计研究院有限公司 | A kind of bypass technique and its equipment |
-
2014
- 2014-08-04 CN CN201420434706.4U patent/CN204063993U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225038A (en) * | 2018-04-08 | 2018-06-29 | 天津健威泽节能环保科技股份有限公司 | A kind of cement kiln reduces the air mixing device and cool-down method of high-temperature flue-gas |
| CN108534543A (en) * | 2018-06-07 | 2018-09-14 | 天津水泥工业设计研究院有限公司 | A kind of bypass technique and its equipment |
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Effective date of registration: 20161110 Address after: 410205 Hunan city high tech Development Zone Changsha Changsha Wenxuan Road No. 27 Lu Valley Yuyuan D3-101 building two floor Patentee after: CHANGSHA ZICHEN TECHNOLOGY DEVELOPMENT CO., LTD. Address before: 410013 Hunan province high tech Development Zone C2 group Binjiang fortune Silicon Valley building, room 5, building 510, room Patentee before: Yin Xiaolin |