CN106907922A - A kind of cement rotary kiln kiln tail smoke-box for being provided with negative pressure adjusting device - Google Patents
A kind of cement rotary kiln kiln tail smoke-box for being provided with negative pressure adjusting device Download PDFInfo
- Publication number
- CN106907922A CN106907922A CN201710147503.5A CN201710147503A CN106907922A CN 106907922 A CN106907922 A CN 106907922A CN 201710147503 A CN201710147503 A CN 201710147503A CN 106907922 A CN106907922 A CN 106907922A
- Authority
- CN
- China
- Prior art keywords
- kiln tail
- kiln
- tail smoke
- box body
- cement rotary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/30—Arrangements of partitions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/36—Arrangements of air or gas supply devices
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
A kind of cement rotary kiln kiln tail smoke-box for being provided with negative pressure adjusting device disclosed by the invention, including kiln tail smoke-box body, the top of kiln tail smoke-box body offers a dore furnace connected entrance, its bottom sides offers a cement rotary kiln connected entrance, the side wall middle part of the kiln tail smoke-box body offers a feed opening, the bottom of the kiln tail smoke-box body is formed with the blanking slope of a lower edge that the cement rotary kiln connected entrance is extended to by the lower edge of the feed opening, middle position on the blanking slope is provided with a baffle plate, when the material got off from raw material tremie pipe is by the baffle plate, partial material is kicked up and risen by kiln tail gas.The present invention matches regulative mode with kiln by increasing tertiary air with wind, increases the necking of kiln tail smoke-box and tertiary-air pipe this ventilation section area at two, reduces invalid SR, energy-saving.
Description
Technical field
The present invention relates to the peace cement rotary kiln technical field, more particularly to a kind of production suitable for cement industry clinker
Cement rotary kiln kiln tail smoke-box equipped with negative pressure adjusting device.
Background technology
In clinker production process, grate-cooler is the critical host equipment in the sinter leaching system of cement plant, its master
It is clinker to be cooled down, is conveyed to want function；It is to burn till to be simultaneously for cement rotary kiln and dore furnace etc. provide hot-air
The capital equipment of system recuperation of heat, enters into cement rotary kiln, while in cement from grate-cooler warm air high (First air) out
Coal dust firing is sprayed into rotary kiln, kiln tail gas enter into dore furnace tapering, come from raw material tremie pipe by kiln tail smoke-box
Raw material are entered into cement rotary kiln along kiln tail smoke-box slope, are adjusted by adjusting tertiary air flapper valve aperture size
In cement rotary kiln and tertiary air matching, keep the negative pressure of kiln tail in -500Pa, tertiary air outlet pressure in -300Pa or so,
So that the wind of about 60%-70% passes through from tertiary-air pipe.
In clinker production process, when blown sands is more in clinker, can be deposited in tertiary-air pipe, increase tertiary air
Resistance, readjusted by progressively increasing tertiary air valve aperture in production in cement rotary kiln and tertiary air matching, when
After tertiary air valve standard-sized sheet, balance just cannot be again kept.Maintenance every time need to spend a large amount of manpower and materials to come to the collection in tertiary-air pipe
Material is cleared up, and environmental pollution is big and dangerous during construction.
Therefore, applicant carried out beneficial exploration and trial, have found result of the above problems, will be detailed below being situated between
The technical scheme for continuing is produced under this background.
The content of the invention
The technical problems to be solved by the invention：One kind is provided in view of the shortcomings of the prior art negative pressure regulation dress is installed
The cement rotary kiln kiln tail smoke-box put, kiln tail smoke-box vacuum magnitude is adjusted by negative pressure adjusting device, so as to control cement to return
Wind size is used in rotary kiln, the interior wind of cement rotary kiln and tertiary air ratio is adjusted, the resolution ratio of material in kiln, energy-conservation drop is improved
Consumption.
Technical problem solved by the invention can be realized using following technical scheme：
A kind of cement rotary kiln kiln tail smoke-box for being provided with negative pressure adjusting device, including kiln tail smoke-box body, raw material blanking
Pipe and tertiary-air pipe, the top of the kiln tail smoke-box body offer a dore furnace connected entrance, and its bottom sides offers one
Cement rotary kiln connected entrance, the dore furnace connected entrance and cement rotary kiln connected entrance of the kiln tail smoke-box body respectively with dore furnace
Bottom of furnace body and cement rotary kiln kiln tail connection so that the kiln tail smoke-box body connects cement rotary kiln with dore furnace,
The side wall middle part of the kiln tail smoke-box body offers a feed opening, and the bottom of the kiln tail smoke-box body is formed with one by described
The lower edge of feed opening extends to the blanking slope of the lower edge of the cement rotary kiln connected entrance, the lower end of the raw material tremie pipe with
The feed opening connection of the kiln tail smoke-box body, its other end is tilted upward and stretched out, and one end of the tertiary-air pipe connects
It is connected on the bottom of furnace body of dore furnace outside, its other end stretches out and is connected with tertiary air wind regime, in the tertiary-air pipe
It is provided with a tertiary air valve；Characterized in that, the middle position on the blanking slope is provided with a baffle plate, when from described
When the material that raw material tremie pipe gets off is by the baffle plate, partial material is kicked up and risen by kiln tail gas.
In a preferred embodiment of the invention, the baffle plate is described by the lateral surface insertion of the kiln tail smoke-box body
In kiln tail smoke-box body, the inventory kicked up by kiln tail gas is adjusted by adjusting the insertion depth of the baffle plate.
In a preferred embodiment of the invention, the baffle plate is L-shaped baffle plate, and the side of the L-shaped baffle plate leans against institute
State blanking slope it is domatic on, its opposite side is domatic vertical with the blanking slope.
In a preferred embodiment of the invention, the baffle plate is made of heat resisting steel.
As a result of technical scheme as above, the beneficial effects of the present invention are：Due under kiln tail smoke-box body
Expect that the middle position on slope is provided with a baffle plate, by kiln tail gas when passing through baffle plate from the partial material that raw material tremie pipe gets off
Kick up and rise, the negative pressure of kiln tail is also increased, and kiln ventilation is accordingly reduced.When in normal production, by tertiary air valve
Standard-sized sheet, the inventory kicked up by kiln tail gas is adjusted by the insertion depth of controllable register, so as to adjust the negative pressure of kiln tail, is made
It is obtained to match with tertiary air outlet negative pressure.When need clear up tertiary-air pipe in when gathering materials, keep systematic air flow it is constant, will keep off
The insertion depth of plate is adjusted to maximum, and operation about 8 hours can be clean by the treatment of gathering materials in tertiary-air pipe.The present invention is by increasing
Tertiary air matches regulative mode with the interior wind of kiln, increases this ventilation section face at two of the necking of kiln tail smoke-box and tertiary-air pipe
Product, reduces invalid SR, energy-saving.Additionally, the small volume of baffle plate of the invention, manufacturing cost is relatively low, just
In regulation and sealing.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is structural representation of the invention.
Fig. 2 is enlarged drawing at the A of Fig. 1.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is expanded on further.
Referring to Fig. 1, what is be given in figure is a kind of cement rotary kiln kiln tail smoke-box for being provided with negative pressure adjusting device, including kiln
Tail smoke-box body 100, raw material tremie pipe 200 and tertiary-air pipe 300.
The top of kiln tail smoke-box body 100 offers a dore furnace connected entrance 110, and its bottom sides offers a cement and returns
Rotary kiln connected entrance 120, the dore furnace connected entrance 110 and cement rotary kiln connected entrance 120 of kiln tail smoke-box body 100 respectively with decomposition
The bottom of furnace body and cement rotary kiln kiln tail 20 of stove 10 are connected so that kiln tail smoke-box body 100 is by cement rotary kiln 20 and decomposes
Stove 10 is connected.The side wall middle part of kiln tail smoke-box body 100 offers a feed opening 130, and the bottom of kiln tail smoke-box body 100 is formed
There is the blanking slope 140 of a lower edge that cement rotary kiln connected entrance 120 is extended to by the lower edge of feed opening 130.
The lower end 210 of raw material tremie pipe 200 is connected with the feed opening 130 of kiln tail smoke-box body 100, and its other end 220 inclines
Obliquely and stretch out.One end 310 of tertiary-air pipe 300 is connected on the bottom of furnace body of dore furnace 10 outside, its other end
320 stretch out and are connected with tertiary air wind regime, and one is provided with tertiary-air pipe 300 is used to adjust the air intake of tertiary-air pipe 300
The tertiary air valve of amount.
Middle position on the blanking slope 140 of kiln tail smoke-box body 100 is provided with a baffle plate 400, when under raw material
When the material that expects pipe 200 is got off is by baffle plate 400, partial material is kicked up and risen by kiln tail gas, and the negative pressure of kiln tail is also therewith
Raise, kiln ventilation is accordingly reduced.Preferably, baffle plate 400 inserts kiln tail smoke-box body by the lateral surface of kiln tail smoke-box body 100
In 100, the inventory kicked up by kiln tail gas can be thus adjusted by the insertion depth of controllable register 400, so as to adjust
Save the negative pressure of kiln tail so that it matches with tertiary air outlet negative pressure.When need clear up tertiary-air pipe in when gathering materials, maintainer
System air quantity is constant, and the insertion depth of baffle plate 400 is adjusted into maximum, and operation about 8 hours can be by the place that gathers materials in tertiary-air pipe 300
Reason is clean.
Referring to Fig. 2, in the present embodiment, baffle plate 400 is L-shaped baffle plate, and the side 410 of the L-shaped baffle plate leans against kiln tail smoke-box
The blanking slope 140 of body 100 it is domatic on, its opposite side 420 is domatic with the blanking slope 140 of kiln tail smoke-box body 100
Vertically.Baffle plate 400 is made of heat resisting steel, it is ensured that baffle plate 400 can be used normally in high temperature environments.
General principle of the invention and principal character and advantages of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not limited to the above embodiments, simply explanation described in above-described embodiment and specification this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appending claims and its
Equivalent thereof.
Claims (4)
1. a kind of cement rotary kiln kiln tail smoke-box for being provided with negative pressure adjusting device, including kiln tail smoke-box body, raw material tremie pipe
And tertiary-air pipe, the top of the kiln tail smoke-box body offers a dore furnace connected entrance, and its bottom sides offers a water
Mud rotary kiln connected entrance, the dore furnace connected entrance and cement rotary kiln connected entrance of the kiln tail smoke-box body respectively with dore furnace
Bottom of furnace body and cement rotary kiln kiln tail are connected so that the kiln tail smoke-box body connects cement rotary kiln with dore furnace, institute
The side wall middle part for stating kiln tail smoke-box body offers a feed opening, and the bottom of the kiln tail smoke-box body is formed with one by under described
The lower edge of material mouth extends to the blanking slope of the lower edge of the cement rotary kiln connected entrance, the lower end of the raw material tremie pipe and institute
The feed opening connection of kiln tail smoke-box body is stated, its other end is tilted upward and stretched out, one end connection of the tertiary-air pipe
On on the outside of the bottom of furnace body of dore furnace, its other end stretches out and is connected with tertiary air wind regime, is set in the tertiary-air pipe
It is equipped with a tertiary air valve；Characterized in that, the middle position on the blanking slope is provided with a baffle plate, when from the life
When the material that material tremie pipe gets off is by the baffle plate, partial material is kicked up and risen by kiln tail gas.
2. the cement rotary kiln kiln tail smoke-box of negative pressure adjusting device is installed as claimed in claim 1, it is characterised in that described
Baffle plate is inserted in the kiln tail smoke-box body by the lateral surface of the kiln tail smoke-box body, by the insertion depth for adjusting the baffle plate
Spend to adjust the inventory kicked up by kiln tail gas.
3. the cement rotary kiln kiln tail smoke-box of negative pressure adjusting device is installed as claimed in claim 2, it is characterised in that described
Baffle plate is L-shaped baffle plate, the side of the L-shaped baffle plate lean against the blanking slope it is domatic on, its opposite side is oblique with the blanking
Slope it is domatic vertical.
4. the cement rotary kiln kiln tail smoke-box of negative pressure adjusting device is installed as claimed any one in claims 1 to 3, it is special
Levy and be, the baffle plate is made of heat resisting steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710147503.5A CN106907922B (en) | 2017-03-13 | 2017-03-13 | Kiln tail smoke chamber of rotary cement kiln provided with negative pressure adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710147503.5A CN106907922B (en) | 2017-03-13 | 2017-03-13 | Kiln tail smoke chamber of rotary cement kiln provided with negative pressure adjusting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106907922A true CN106907922A (en) | 2017-06-30 |
| CN106907922B CN106907922B (en) | 2022-12-23 |
Family
ID=59186578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710147503.5A Active CN106907922B (en) | 2017-03-13 | 2017-03-13 | Kiln tail smoke chamber of rotary cement kiln provided with negative pressure adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106907922B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113834323A (en) * | 2021-10-08 | 2021-12-24 | 华润水泥技术研发（广西）有限公司 | Rotary kiln gas flow velocity control method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2859422Y (en) * | 2005-12-24 | 2007-01-17 | 张相红 | Cement predecomposing and kiln-tail sheet-preventing smoke room |
| CN202648402U (en) * | 2012-03-30 | 2013-01-02 | 新疆天业（集团）有限公司 | Device for calcining portland cement clinker by using high chlorine ion residue raw material |
| CN203336972U (en) * | 2013-05-24 | 2013-12-11 | 滕州中联水泥有限公司 | Discharge tongue-type plate assembly of feed-end chamber of dry-method cement kiln |
| CN204100783U (en) * | 2014-09-16 | 2015-01-14 | 郑州嘉耐特种铝酸盐有限公司 | Rotary kiln hermetically-sealed construction |
| CN204329580U (en) * | 2014-11-28 | 2015-05-13 | 天瑞集团水泥有限公司 | A kind of rotary kiln and kiln tail smoke-box sealing and connecting device |
| CN205090795U (en) * | 2015-09-22 | 2016-03-16 | 湖北白兆山水泥有限公司 | Kiln tail sealing device |
| CN206683392U (en) * | 2017-03-13 | 2017-11-28 | 上海万澄环保科技有限公司 | A kind of cement rotary kiln kiln tail smoke-box for being provided with negative pressure adjusting device |
-
2017
- 2017-03-13 CN CN201710147503.5A patent/CN106907922B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2859422Y (en) * | 2005-12-24 | 2007-01-17 | 张相红 | Cement predecomposing and kiln-tail sheet-preventing smoke room |
| CN202648402U (en) * | 2012-03-30 | 2013-01-02 | 新疆天业（集团）有限公司 | Device for calcining portland cement clinker by using high chlorine ion residue raw material |
| CN203336972U (en) * | 2013-05-24 | 2013-12-11 | 滕州中联水泥有限公司 | Discharge tongue-type plate assembly of feed-end chamber of dry-method cement kiln |
| CN204100783U (en) * | 2014-09-16 | 2015-01-14 | 郑州嘉耐特种铝酸盐有限公司 | Rotary kiln hermetically-sealed construction |
| CN204329580U (en) * | 2014-11-28 | 2015-05-13 | 天瑞集团水泥有限公司 | A kind of rotary kiln and kiln tail smoke-box sealing and connecting device |
| CN205090795U (en) * | 2015-09-22 | 2016-03-16 | 湖北白兆山水泥有限公司 | Kiln tail sealing device |
| CN206683392U (en) * | 2017-03-13 | 2017-11-28 | 上海万澄环保科技有限公司 | A kind of cement rotary kiln kiln tail smoke-box for being provided with negative pressure adjusting device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113834323A (en) * | 2021-10-08 | 2021-12-24 | 华润水泥技术研发（广西）有限公司 | Rotary kiln gas flow velocity control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106907922B (en) | 2022-12-23 |
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