CN203231633U - Kiln head primary-air supply device for cement kiln - Google Patents
Kiln head primary-air supply device for cement kiln Download PDFInfo
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- CN203231633U CN203231633U CN2013201980065U CN201320198006U CN203231633U CN 203231633 U CN203231633 U CN 203231633U CN 2013201980065 U CN2013201980065 U CN 2013201980065U CN 201320198006 U CN201320198006 U CN 201320198006U CN 203231633 U CN203231633 U CN 203231633U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
A kiln head primary-air supply device for a cement kiln comprises a Roots blower, a primary-air pipe, a burner and a heating pipeline. The primary-air pipe is connected with the air outlet of the Roots blower and the heating pipeline. The air outlet of the heating pipeline is connected with the air inlet of a coal-injection pipe in the burner. The heating pipeline is arranged on the top portion of the medium heat section of a grate cooler, and primary air in the heating pipeline is heated by waste-heat air generated when clinkers are cooled by the grate cooler. The kiln head primary-air supply device is optimized starting from air temperature regulation of the primary air, energy consumption during production is reduced, corporate profitability is improved indirectly, and clinker quality and output are further improved.
Description
Technical field
The utility model relates to a kind of cement manufacture plant, specifically cement kiln wind feedway first time.
Background technology
At present, all need to use the kiln hood burner in the New Type Dry-process Cement Production technology, it has two aspect effects, and the one, be pulverized coal conveying fuel in the kiln; The 2nd, the primary air of generation high-voltage high-speed guarantees that coal dust can fully mix with high temperature secondary wind in the kiln, is convenient to the rapid diffusion combustion of coal dust.The normal temperature air that a wind of existing burner is provided by roots blower, the technical staff finds in actual production process, because the cement kiln kiln hood is supplied with temperature and the isoparametric influence of air quantity of a wind, energy consumption in the production also embodies very big gap, and how optimizing technology then is the technical problem that presses for solution to alleviate energy consumption.
The utility model content
For solving the problems of the technologies described above, the utility model provides cement kiln wind feedway for the first time, this utility model has been optimized cement kiln wind supply for the first time scheme, this scheme is started with from the wind-warm syndrome regulation and control of a wind, reduced the energy consumption in the production process, improve the performance of enterprises indirectly, but also improved clinker quality and output.
The technical scheme that the utility model adopts is: cement kiln is the wind feedway for the first time, airduct, burner and a heating pipe line comprising roots blower, link to each other with the roots blower air outlet, one time airduct is connected with heating pipe line, the air outlet of heating pipe line links to each other with the air inlet of coal powder injection pipe in the burner, described heating pipe line is arranged on the top of cold prevention machine middle-temperature section, and the waste heat air that is cooled off grog by cold prevention machine heats a wind in the heating pipe line.
This device, described heating pipe line comprises blast pipe, discharge pipe and heat exchanger tube, and heat exchanger tube is arranged in the cold prevention machine middle-temperature section zone, and the first and last end of heat exchanger tube is connected with blast pipe, discharge pipe respectively.
This device, a described airduct is connected with the coal powder injection pipe, between airduct and coal powder injection pipe, be provided with control valve A, blast pipe is connected with an airduct, between blast pipe and an airduct, be provided with control valve B, discharge pipe is connected with the coal powder injection pipe, is provided with control valve C between discharge pipe and coal powder injection pipe.
The beneficial effects of the utility model are: the utility model has improved effect of coal saving by improving a wind feedway, and effect is very obvious, and is as follows by data list: by wind being added three of the branches of economizing on coal of heat supply technology; One, one be primary air flow because being heated, volume expands.As calculated, one time wind is heated to 250 ℃ from 30 ℃ of normal temperature, is guaranteeing that its normal temperature flow can reduce about 40% on the former flow basis of invariable, and the combustion air of this part saving is alternative by about 1000 ℃ high temperature secondary wind fully.Can save coal consumption; Two, one is that this residue wind-warm syndrome of 60% has reduced from 30 ℃ of heat absorptions that are heated to 250 ℃ of this section processes of normal temperature; Three, another piece is that wind facies has lacked 40% to consumption because of one time, its rotation speed of fan can descend 3 ~ 5 hertz (can descend in theory 10 ~ 15 hertz, but because heater has increased duct length and elbow, equally also can increase the part resistance).
The hear rate that comprehensive this three part is saved, conversion is among grog, and about per kilogram grog can be saved standard coal consumption 1kg.And by using a wind heater, the kiln hood secondary air temperature can improve 20 ~ 50 ℃, black duration and degree of heating contraction in length 1/3 in the kiln, and clinker quality, output all increase.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Reference numeral: 1, airduct, 2, burner, 201, the coal powder injection pipe, 3, heating pipe line, 301, blast pipe, 302, discharge pipe, 303, heat exchanger tube, 4, the cold prevention machine middle-temperature section, 5, control valve A, 6, control valve B, 7, control valve C, 8, rotary kiln, 9, kiln hood cover high-temperature area, 10, kiln hood platform, 11, the grate bed.
The specific embodiment
As shown in drawings, cement kiln is the wind feedway for the first time, the airduct 1, burner 2 and the heating pipe line 3 that comprise roots blower, link to each other with the roots blower air outlet, one time airduct 1 is connected with heating pipe line 3, the air outlet of heating pipe line 3 links to each other with the air inlet of coal powder injection pipe 201 in the burner 2, described heating pipe line 3 is arranged on the top of cold prevention machine middle-temperature section 4, waste heat air by cold prevention machine cooling grog heats a wind in the heating pipe line 3, this structure can fully reclaim the grog waste heat, saves coal consumption.
The utility model, described heating pipe line 3 comprises blast pipe 301, discharge pipe 302 and heat exchanger tube 303, heat exchanger tube 303 is arranged in cold prevention machine middle-temperature section 4 zones, and heat exchanger tube 303 belows are grate bed 11, and the first and last end of heat exchanger tube 303 is connected with blast pipe 301, discharge pipe 302 respectively; A described airduct 1 is connected with coal powder injection pipe 201, between airduct 1 and coal powder injection pipe 201, be provided with control valve A5, blast pipe 301 is connected with an airduct 1, between blast pipe 301 and an airduct 1, be provided with control valve B6, discharge pipe 302 is connected with coal powder injection pipe 201, is provided with control valve C7 between discharge pipe 302 and coal powder injection pipe 201.When not needing heating pipe line work, can open control valve A, closed control valve B and control valve C, one time wind directly enters the coal powder injection pipe from former airduct, adopts traditional mode of operation; When heating pipe line comes into operation, but closed control valve A opens control valve B and control valve C, and one time wind enters heater through management, returns the coal powder injection pipe again after the flue gas heating through 400 ~ 500 ℃ of cold prevention machine middle-temperature sections, plays the effect of burning aid coal saving.
Described burner comprises a running gear and a coal powder injection pipe 201, and running gear is arranged on the kiln hood platform 10, and coal powder injection Guan Yiduan passes kiln hood high-temperature area 9 and is connected with rotary kiln 8.
The utility model, in order to increase the wearability of heating pipe line, heating pipe line adopts stainless steel heat-resistant, wear-resistant steel pipe to make, and is connected with the burner air inlet with the refractory metal flexible pipe after going out cold prevention machine, does not influence the mobility of burner.Simultaneously when guaranteeing equal heat time heating time, reduce elbow as far as possible, reduce resistance, the shape of heating pipe line can be two (groups) side by side, the mode that also can be several rings by series and parallel connects.
Cement kiln is the wind supply method for the first time, comprise that roots blower provides the step, burner of a wind to the step that coal dust fuel and a wind are provided in the rotary kiln to burner, the heating steps that also comprises a wind, the wind that roots blower provides out heats by heater, the air themperature that guarantees a wind increases by 150 ~ 200 ℃, and a wind after the heating enters burner.Can calculate from three aspects by wind being added the effect that heat supply technology brings; One, a wind are because being heated, and volume expands, as calculated, one time wind is heated to 250 ℃ from 30 ℃ of normal temperature, guaranteeing that its normal temperature flow can reduce about 40% on the former flow basis of invariable, the combustion air of this part saving is alternative by about 1000 ℃ high temperature secondary wind fully.Can save coal consumption; It two is that this residue wind-warm syndrome of 60% has reduced from 30 ℃ of heat absorptions that are heated to 250 ℃ of this section processes of normal temperature; It three is that wind facies has lacked 40% to consumption because of one time, and its rotation speed of fan can descend 3 ~ 5 hertz.
Claims (3)
1. cement kiln wind feedway for the first time, it is characterized in that: comprise roots blower, an airduct (1) that links to each other with the roots blower air outlet, burner (2) and heating pipe line (3), an airduct (1) is connected with heating pipe line (3), the air outlet of heating pipe line (3) links to each other with the air inlet of coal powder injection pipe (201) in the burner (2), described heating pipe line (3) is arranged on the top of cold prevention machine middle-temperature section (4), and the waste heat air that is cooled off grog by cold prevention machine heats a wind in the heating pipe line (3).
2. cement kiln according to claim 1 wind feedway for the first time, it is characterized in that: described heating pipe line (3) comprises blast pipe (301), discharge pipe (302) and heat exchanger tube (303), heat exchanger tube (303) is arranged in cold prevention machine middle-temperature section (4) zone, and the first and last end of heat exchanger tube (303) is connected with blast pipe (301), discharge pipe (302) respectively.
3. cement kiln according to claim 2 wind feedway for the first time, it is characterized in that: a described airduct (1) is connected with coal powder injection pipe (201), between an airduct (1) and coal powder injection pipe (201), be provided with control valve A(5), blast pipe (301) is connected with an airduct (1), between blast pipe (301) and an airduct (1), be provided with control valve B(6), discharge pipe (302) is connected with coal powder injection pipe (201), is provided with control valve C(7 between discharge pipe (302) and coal powder injection pipe (201)).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201980065U CN203231633U (en) | 2013-04-19 | 2013-04-19 | Kiln head primary-air supply device for cement kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201980065U CN203231633U (en) | 2013-04-19 | 2013-04-19 | Kiln head primary-air supply device for cement kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203231633U true CN203231633U (en) | 2013-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201980065U Expired - Fee Related CN203231633U (en) | 2013-04-19 | 2013-04-19 | Kiln head primary-air supply device for cement kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203231633U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110958A (en) * | 2013-04-19 | 2014-10-22 | 天瑞集团水泥有限公司 | Method and device for supplying primary air for kiln head of cement kiln |
-
2013
- 2013-04-19 CN CN2013201980065U patent/CN203231633U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110958A (en) * | 2013-04-19 | 2014-10-22 | 天瑞集团水泥有限公司 | Method and device for supplying primary air for kiln head of cement 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 |
Granted publication date: 20131009 Termination date: 20170419 |
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| CF01 | Termination of patent right due to non-payment of annual fee |