CN202485466U - Alkaliferous smoke introduction device of cement kiln bypass air discharge power generation boiler - Google Patents
Alkaliferous smoke introduction device of cement kiln bypass air discharge power generation boiler Download PDFInfo
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- CN202485466U CN202485466U CN2011205650328U CN201120565032U CN202485466U CN 202485466 U CN202485466 U CN 202485466U CN 2011205650328 U CN2011205650328 U CN 2011205650328U CN 201120565032 U CN201120565032 U CN 201120565032U CN 202485466 U CN202485466 U CN 202485466U
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
An alkaliferous smoke introduction device of a cement kiln bypass air discharge power generation boiler comprises a kiln tail smoke chamber, a kiln tail outlet smoke air pipe, a bypass air discharge boiler air pipe, a bypass air discharge boiler, a boiler outlet dust collector and a draught fan. The kiln tail is sequentially connected with the kiln tail outlet air pipe of the smoke chamber, the bypass air discharge boiler air pipe, the bypass air discharge boiler, the dust collector, the draught fan and a chimney. The device resolves the problem that kiln ash in a smoke air pipe is bonded and blocks the pipe in the air discharge alkaline discharge process through a bypass of the cement decomposition kiln, and simultaneously resolves the problem that the boiler, the pipeline and the kiln ash are bonded and blocked in the air discharge alkaline discharge process through the bypass of the cement decomposition kiln.
Description
Technical field
The utility model relates to cement kiln bypass electricity generation boiler and contains alkali flue gas introducing technology and device thereof, belongs to manufacture of cement and apparatus field.
Background technology
Much local in the China and even the world for a long time, because the alkali content of producing in the cement raw material is too high, also alkali content is too high to cause the grog of being produced; The grog that alkali content is too high; Not only reduce cement intensity, and the cement that grinds, the concrete also shortening greatly service life of getting; So the alkali content in the reduction grog is a lot of domestic and international cement production enterprise problem anxious to be solved.
The major measure that reduces the alkali content in the grog at present both at home and abroad is; Carry out bypass decomposing kiln kiln tail: be exactly decomposition kiln kiln tail smoke-box in the enrichment of alkali content; Extract one flue gas out, the kiln ash higher alkali content in the flue gas ejects, thereby reduces the alkali content in the grog.
But bypass both domestic and external all exists in the outlet flue gas airduct, and kiln ash adhesion blocking problem causes domestic and international cement production enterprise to have to abandon bypass.
The utility model content
The purpose of the utility model is,
The purpose of the utility model is to provide a kind of cement kiln bypass electricity generation boiler to contain alkali flue gas introducing device; This device can solve cement and decompose bypass of kiln and leak informaton in row's alkali process, and flue gas airduct kiln ash adhesion blocking problem simultaneously, solves cement and decomposes bypass of kiln and leak informaton in row's alkali power generation process boiler, pipeline, kiln ash adhesion blocking problem.
The technical scheme of the utility model is:
Cement kiln bypass electricity generation boiler contains the device that the alkali flue gas is introduced, and comprises, kiln tail smoke-box, kiln tail export the flue gas airduct, advance bypass boiler airduct, bypass boiler, go out boiler dust-precipitator, air-introduced machine, chimney; Described kiln tail smoke-box is with smoke-box kiln tail outlet airduct, bypass boiler airduct, bypass boiler, dust-precipitator, air-introduced machine, chimney UNICOM successively; Wherein, described kiln tail smoke-box is got the place, air port with the smoke-box that kiln tail outlet flue gas airduct is communicated with, and is provided with the grey chain of retaining; Kiln tail outlet flue gas airduct is 90 degree cloth settings vertically upward, and its bottom is provided with ash collection slot;
Advance bypass boiler airduct, be tilted to down >=the 45 setting; At the gas approach place of bypass boiler, the roots blower of the low air quantity of a high blast is housed, this blower fan is blown into cold wind through a high pressure nozzle to the bypass boiler.
Flue gas flow rate is lower than the place of 6 meter per seconds, and be sweep of gases less than the position, air bubble is installed.
The quantity of the grey chain of retaining is installed, and the Dust Capacity that is extracted with control is 15 tons/hour and is as the criterion; Said kiln tail outlet flue gas airduct, diameter is φ 3000mm, height 12500mm; Saidly advance bypass boiler airduct, be tilted to down>=45 °, diameter is φ 1600mm; At the preceding 2.5 meters distance segment of the air inlet of bypass boiler, diameter phi 2400mm; Said roots blower specification is 7m
3/ min, 68kPa; Said bypass boiler specification is 15 tons, pressure 2.4MP.
The cement kiln bypass electricity generation boiler that the utility model provides contains alkali flue gas introducing device; Having solved cement decomposes bypass of kiln and leaks informaton in row's alkali process; Flue gas airduct kiln ash adhesion blocking problem; Solving cement simultaneously decomposes bypass of kiln and leaks informaton in row's alkali power generation process boiler, pipeline, kiln ash adhesion blocking problem.Use above-mentioned method and device, can reduce the alkali content in the grog, improve cement intensity, increase concrete service life.
Description of drawings
Accompanying drawing is used for explaining and supporting the utility model, but does not limit the utility model.
Fig. 1 is the schematic flow sheet that the cement kiln bypass electricity generation boiler of the utility model contains alkali flue gas introducing device.
Among the figure, the 1-rotary kiln, the 2-smoke-box, the 3-smoke-box is got the air port, and 4-keeps off grey chain; 5-kiln exit gas outlet airduct, 6-7-8-9-bypass boiler tube, 10-roots blower, 11-bypass boiler, 12-evaporimeter; The 16-bag collector, the 17-blower fan, the 18-chimney,, the S-inspection opening; The T-air bubble, one section of A-, two sections of B-, three sections of C-, four sections of D-.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is done detailed explanation.Fig. 1 is that the cement kiln bypass electricity generation boiler of the utility model contains the schematic flow sheet that the alkali flue gas is introduced equipment.In conjunction with accompanying drawing, can find out:
Cement kiln bypass electricity generation boiler contains alkali flue gas introducing method, uses the cement kiln bypass electricity generation boiler of the utility model to contain alkali flue gas introducing device, referring to accompanying drawing 1; The technological process of adopting cement kiln bypass electricity generation boiler to contain the introducing of alkali flue gas is: after the flue gas of rotary furnace 1 got into kiln tail smoke-box 2, flue gas was got air port 3 from kiln tail smoke-box 2 through kiln tail smoke-box; Get into kiln exit gas outlet airduct 5; Again to bypass boiler airduct 6-7-8-9, again to bypass boiler 11, again to dust-precipitator 16; Again to air-introduced machine 17, again to chimney 18.
Kiln ash in the boiler 11 and the kiln ash in the dust-precipitator 16, according to the alkali content in the kiln ash, deciding is to efflux, or a part of kiln ash, gets into the raw material homogenizing storehouse, goes into the kiln calcining once more.
When adopting greater than 2% the time, the kiln ash alkalinity of extracting out all effluxes; When the kiln ash alkalinity of extracting out during at 2%-1.5%, every at a distance from 12 hours, effluxed 2 hours; When the kiln ash alkalinity of extracting out 1.5% when following, all get back to homogenizing storehouse and go into kiln and calcine.
Kiln exit gas is got the air port airduct, is divided into four sections:
Described kiln exit gas is got the air port airduct, be divided into four sections and be meant: smoke-box is first section A to getting 3 meters sections in air port 4; Getting the airduct 90 degree cloth sections of setting 5 vertically upward, is second section B; It is the 3rd section C that bypass electricity generation boiler import 6 flue gas airducts are tilted to down cloth setting >=45 a ° section 6-7-8-9; At the preceding 2.5 meters section 7-8-9 of the air inlet of boiler, be the 4th section D.
The position of dust stratification in airduct, among the figure, air bubble is installed in the position of mark " T ", the self-timing cleaning.
Described in airduct the position of dust stratification, be meant that flue gas flow rate is lower than the place of 6 meter per seconds, and be sweep of gases less than the position.The position of figure acceptance of the bid " T ".
First section A is provided with anti-gray chain 4, the extraction of dustiness in the control flue gas, and Dust Capacity is controlled in 15 tons/hour;
Second section B, 90 degree are provided with vertically upward, enlarge dust diameter, and flue gas flow rate is reduced in 6.0 meter per seconds, utilize kiln ash own wt, fall to the ash collection slot of bottom, use air bubble again, push smoke-box and advance kiln;
The 3rd section C, the kiln ash that the alkalinity that carries when flue gas is high, temperature is when 750 degree are above; The downward-sloping layout of bypass electricity generation boiler import flue gas airduct 6-7-8-9, inclination angle >=45 ° are guaranteeing that ventilation per hour reaches under 30% situation with air quantity; Reduce dust diameter, improve flue gas flow rate in the airduct, its flow velocity is not less than 10 meter per seconds; Utilize flue gas, wash away the kiln ash in the airduct, make the kiln ash get into boiler 11; The position of figure acceptance of the bid " S " is an inspection opening, through inspection opening, and the state of the kiln ash in the inspection airduct.
The 4th section D is that wind speed drops to 7 meter per seconds, uses the air high-pressure nozzle, and by the roots blower 10 of the low air quantity of a high blast, evenly is blown into cold wind, and with the kiln ash particle surface temperature in the flue gas, moment is reduced to below 600 ℃;
Cold wind will quicken to kick up at the kiln ash of boiler smoke import department 9, under fast state, via bypass boiler 11, dust-precipitator 16, air-introduced machine 17 suction boiler evaporators 12, kiln ash heat is absorbed rapidly by boiler 11.
Cement kiln bypass electricity generation boiler contains the device that the alkali flue gas is introduced, and comprises, kiln tail smoke-box 2, kiln tail export flue gas airduct 5, advance bypass boiler airduct 6-7-8-9, bypass boiler 11, go out boiler dust-precipitator 16, air-introduced machine 17, chimney 18; Described kiln tail smoke-box 2 is with smoke-box kiln tail outlet airduct 5, bypass boiler airduct 6-7-8-, bypass boiler 11, dust-precipitator 16, air-introduced machine 17, chimney 18 UNICOM successively; Wherein, described kiln tail smoke-box 2 is got 3 places, air port with the smoke-box that kiln tail outlet flue gas airduct 5 is communicated with, and is provided with the grey chain 4 of retaining; Kiln tail outlet flue gas airduct 5,90 degree cloth settings vertically upward, its bottom is provided with ash collection slot;
Advancing bypass boiler airduct 6-7-8-9 is tilted to down >=the 45 setting; At gas approach 9 places of bypass boiler 11, the roots blower 10 of the low air quantity of a high blast is housed, this blower fan is blown into cold wind through a high pressure nozzle to bypass boiler 11.
Flue gas flow rate is lower than the place of 6 meter per seconds, and be sweep of gases less than the position, air bubble is installed in the position of figure acceptance of the bid " T ".
The quantity of the grey chain 4 of retaining is installed, and the Dust Capacity that is extracted with control is 15 tons/hour and is as the criterion; Said kiln tail outlet flue gas airduct 5 diameters are φ 3000mm, height 12500mm; Saidly advance bypass boiler airduct 6-7-8-9 and be tilted to down>=45, diameter is φ 1600mm; The air inlet of bypass boiler 11 preceding 2.5 meters apart from 7-8-9 section, diameter phi 2400mm; Said roots blower 10 specifications are 7m
3/ min, 68kPa; Said bypass boiler 11 specifications are 15 tons, pressure 2.4MP.
Embodiment:
Below introduce the utility model embodiment in detail; Cement kiln bypass electricity generation boiler contains alkali flue gas introducing device; By the dust that kiln tail smoke-box extracts, get into be equipped with by kiln tail outlet flue gas airduct 5, advance bypass boiler airduct 6-7-8-9 and bypass boiler 11, go out boiler dust-precipitator 16, air-introduced machine 17 is formed.Technological process is: get airduct mouth section at kiln tail smoke-box to smoke-box, the grey chain 4 of retaining is installed, it keeps off the quantity of grey chain, and the Dust Capacity that control is extracted is 15 tons/hour; Kiln tail smoke-box 2 to kiln exit gas outlet airduct 5, diameter phi 3000mm; To bypass boiler airduct 6-7-8-9, φ 1600mm; To bypass boiler 11; To dust-precipitator 16; To air-introduced machine 17; To chimney 18.Kiln ash in the boiler 11 and the kiln ash in the dust-precipitator 16 can efflux, and can be to efflux according to the decision of the alkali content in the kiln ash also, and still a part gets into the raw material homogenizing storehouse, goes into the kiln calcining once more.
(2) kiln exit gas is got air port airduct 3, become 90 degree layings vertically upward, said flue gas airduct 5 diameters are φ 3000mm, height 12500mm; Be reduced to flue gas flow rate in every wonderful 1.0 meters. utilize kiln ash own wt to fall naturally, fall into the bottom ash collection slot, push smoke-box 2 with air bubble 7 again and advance kiln;
Flue gas carries the kiln ash, has two kinds, and a kind of is that alkalinity is high, and a kind of is that alkalinity is low, and two kinds of grey adhesives have very big-difference, and the ash that alkalinity is high is with vaporous liquid Hunan more than 750 degree, be easy to get into boiler with flue gas.In order to prevent to contain the high grey adhesion of alkali, inclination boiler airduct with bypass electricity generation boiler import flue gas airduct 6-7-8-9, is tilted to down >=45 ° of layings as far as possible, and diameter is φ 1600mm; Under the situation that does not influence ventilation, reduce dust diameter as far as possible, improve flue gas flow rate in the airduct, the kiln ash that utilizes sweep of gases power to wash away in the airduct gets into boiler 11, and the kiln ash can't be detained in airduct 4.
(3) position of some special dust stratifications in airduct, the cleaning of air bubble 7 self-timings is installed in the position of figure acceptance of the bid " T ".
(4) solve pipe in the kiln ash adhesion boiler, at bypass electricity generation boiler gas approach 9 places, at the air inlet of bypass boiler, preceding 2.5 meters distance segment 9, diameter is φ 2400mm; By the roots blower 10 of the low air quantity of a high blast, said roots blower 10 specifications are 7m
3/ min, 68kPa evenly is blown into one cold wind, and the ash fruit grain of the kiln in flue gas surface temperature moment is reduced to below 600 ℃, and the alkali in kiln ash below 600 ℃ mainly exists with solid, has not had the characteristic of adhesion.The cold wind that is blown into is kicked up the kiln ash in the airduct 9 come, and via bypass boiler 11, specification is 15 tons, pressure 2.4MP, and through dust-precipitator 1, air-introduced machine 17, suction boiler evaporator 12 is absorbed kiln ash heat rapidly by boiler 11.
Technique effect and advantage:
(1) this cement kiln bypass row alkali boiler generating flue gas introducing device that leaks informaton, airduct and boiler do not have the adhesion of kiln ash and stop up in the power generation process. realize that high-alkali area can produce low alkali cement, and the heat of extracting out successful convert electric energy to; Referring to table 1.
Table 1
Tianshan Mountains, Aksu how unrestrained cement Co., Ltd
New dry process clinker production line kiln tail bypass boiler operating parameter statistical form in 2011
Power houses November 26 in 2011
The grog alkali content is to the table of comparisons (be not arrange the production of the normal row of alkali grog beginning on October 18 alkali September 26 to October 18) of intensity
Laboratory 2011-11-26
Just can find out mean value 0.748 before October 18 from the alkalinity of grog.The whole month in November, mean value 0.54
Can the row's of finding out alkali be successful just, also be fully used from generating heat energy.
The utility model provides cement kiln bypass electricity generation boiler to contain alkali flue gas introducing device; Can solve cement decomposes bypass of kiln and leaks informaton in row's alkali process; Flue gas airduct kiln ash adhesion blocking problem; Solving cement simultaneously decomposes bypass of kiln and leaks informaton in row's alkali power generation process boiler, pipeline, kiln ash adhesion blocking problem; Therefore, the utlity model has outstanding substantive distinguishing features, creative.
To those skilled in the art, under the guidance of the design of utility model, can derive the identical a plurality of schemes of effect, still, various technical schemes are all within the protection domain of the utility model claim.
Claims (3)
1. cement kiln bypass electricity generation boiler contains the device that the alkali flue gas is introduced, and it is characterized in that, comprises, kiln tail smoke-box, kiln tail export the flue gas airduct, advance bypass boiler airduct, bypass boiler, go out boiler dust-precipitator, air-introduced machine, chimney; Described kiln tail smoke-box and smoke-box kiln tail outlet airduct, bypass boiler airduct, bypass boiler, dust-precipitator, air-introduced machine, chimney be UNICOM successively; Wherein, described kiln tail smoke-box is got the place, air port with the smoke-box that kiln tail outlet flue gas airduct is communicated with, and is provided with the grey chain of retaining; Kiln tail outlet flue gas airduct is 90 degree cloth settings vertically upward, and its bottom is provided with ash collection slot; Advancing bypass boiler airduct tilts downwards ≧ the 45 setting; At the gas approach place of bypass boiler, the roots blower of the low air quantity of a high blast is housed, this blower fan is blown into cold wind through a high pressure nozzle to the bypass boiler.
2. contain the device that the alkali flue gas is introduced according to the described cement kiln bypass of claim 1 electricity generation boiler, it is characterized in that flue gas flow rate is lower than the place of 6 meter per seconds, and be sweep of gases less than the position, air bubble is installed.
3. contain the device that the alkali flue gas is introduced according to the described cement kiln bypass of claim 2 electricity generation boiler, it is characterized in that, the quantity of the grey chain of retaining is installed, the Dust Capacity that is extracted with control is 15 tons/hour and is as the criterion; Said kiln tail outlet flue gas dust diameter is φ 3000mm, height 12500 mm; Saidly advance bypass boiler airduct and tilt downwards ≧ 45, diameter is φ 1600mm; At the preceding 2.5 meters distance segment of the air inlet of bypass boiler, diameter phi 2400mm; Said roots blower specification is
, 68kPa; Said bypass boiler specification is 15 tons, pressure 2.4MP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205650328U CN202485466U (en) | 2011-12-29 | 2011-12-29 | Alkaliferous smoke introduction device of cement kiln bypass air discharge power generation boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205650328U CN202485466U (en) | 2011-12-29 | 2011-12-29 | Alkaliferous smoke introduction device of cement kiln bypass air discharge power generation boiler |
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| Publication Number | Publication Date |
|---|---|
| CN202485466U true CN202485466U (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205650328U Withdrawn - After Issue CN202485466U (en) | 2011-12-29 | 2011-12-29 | Alkaliferous smoke introduction device of cement kiln bypass air discharge power generation boiler |
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| CN (1) | CN202485466U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519268A (en) * | 2011-12-29 | 2012-06-27 | 阿克苏天山多浪水泥有限责任公司 | Alkaliferous smoke lead-in process for bypass vent power generation boiler of cement kiln and device of alkaliferous smoke lead-in process |
| CN103063045A (en) * | 2013-01-24 | 2013-04-24 | 河南省四达仙龙实业有限公司 | Smoke-dust discharge device of medium frequency furnace |
| CN107830540A (en) * | 2017-10-23 | 2018-03-23 | 铜陵市荣伟水泥有限责任公司 | The device that cement kiln bypass electricity generation boiler flue gas containing alkali introduces |
-
2011
- 2011-12-29 CN CN2011205650328U patent/CN202485466U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519268A (en) * | 2011-12-29 | 2012-06-27 | 阿克苏天山多浪水泥有限责任公司 | Alkaliferous smoke lead-in process for bypass vent power generation boiler of cement kiln and device of alkaliferous smoke lead-in process |
| CN103063045A (en) * | 2013-01-24 | 2013-04-24 | 河南省四达仙龙实业有限公司 | Smoke-dust discharge device of medium frequency furnace |
| CN107830540A (en) * | 2017-10-23 | 2018-03-23 | 铜陵市荣伟水泥有限责任公司 | The device that cement kiln bypass electricity generation boiler flue gas containing alkali introduces |
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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 | ||
| CP02 | Change in the address of a patent holder |
Address after: 843000 Akesu economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region, Jianshe Road, Akesu (West Industrial Park, Akesu) Patentee after: Akesu Tianshan Duolang Cement Co., Ltd. Address before: 843000 No. 9, south suburb Road, the Xinjiang Uygur Autonomous Region, Akesu, Akesu Patentee before: Akesu Tianshan Duolang Cement Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20121010 Effective date of abandoning: 20140226 |
|
| RGAV | Abandon patent right to avoid regrant |