CN203648680U - Circulating utilization device for hot air of cement grinding mill - Google Patents
Circulating utilization device for hot air of cement grinding mill Download PDFInfo
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- CN203648680U CN203648680U CN201420018616.7U CN201420018616U CN203648680U CN 203648680 U CN203648680 U CN 203648680U CN 201420018616 U CN201420018616 U CN 201420018616U CN 203648680 U CN203648680 U CN 203648680U
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- grinding mill
- powder concentrator
- cement grinding
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Abstract
The utility model discloses a circulating utilization device for hot air of a cement grinding mill, relating to the technical field of cement production waste heat utilization. The circulating utilization device comprises a chimney arranged on a main exhaust fan of the cement grinding mill for exhausting hot air, and a primary air inlet and a secondary air inlet, which are formed on a powder concentrator; one hot exhaust gas pipeline is connected on the chimney, the outlet of the hot exhaust gas pipeline is connected with the secondary air inlet of the powder concentrator, and the hot exhaust gas pipeline comprises a gas circulating pipe and an insulating pipe sheathed outside the gas circulating pipe. According to the circulating utilization device for hot air of the cement grinding mill, the hot exhaust gas pipeline is arranged between the cement grinding mill and the powder concentrator, high-temperature hot air exhausted from the main exhaust fan of the cement grinding mill is introduced into the secondary air inlet of the powder concentrator, the indoor and outdoor temperature difference of the powder concentrator is effectively reduced, and a phenomenon that granular cement is bonded and blocked on a guide vane of the powder concentrator is avoided.
Description
Technical field
The utility model relates to the UTILIZATION OF VESIDUAL HEAT IN technical field of manufacture of cement, relates in particular to a kind of recycling device of cement grinding mill hot blast.
Background technology
The weather in the north, spring and autumn, winter temperature was low colder.When normal production, in cement production process, can use larger wet desulfurization gypsum and the slag of moisture, average mill feed material moisture content reaches 1.8% left and right, far beyond the requirement of mill feed material moisture content below 1%, therefore the circulated air moisture content that, cement grinding mill circulating fan is taken out of is larger.Because some circulated air in former design will enter in powder concentrator, every spring, autumn, winter air humidity, day and night temperature is large and the equipment inner air and outer air temperature difference is large, cause with circulated air and thin material of cement of larger moisture content and bond on guide vane for powder dressing machines, stop up the guide vane of whole powder concentrator, gap between wind blade is just stuck with paste full in the class of production (8 hours) by cement material, select powder air quantity sharply to reduce, grinding efficiency straight line declines, when platform, be forced to lower, have a strong impact on mill hourly output, stop up when serious, each production class will be shut down and within one hour, be cleared up the material of adhering on blade, have a strong impact on and produce and product quality, cause product cost to increase.For improving the temperature of powder concentrator inner second air, Field Force once erected stove and provided hot blast for powder concentrator, but effect is very little and cause the wasting of resources.
For preventing Coating clogging, subject matter to be solved is to dwindle powder concentrator internal-external temperature difference, must improve powder concentrator first and second wind-warm syndrome.Obviously, guarantee that first and second wind-warm syndrome is unpractical if go up again a set of firing equipment, by checking field layout situation, consider hot gas in the air draft chimney that whether can the use cement grinding mill secondary wind regime as powder concentrator, reason is: (1) main smoke evacuation chimney and powder concentrator Secondary Air entrance distance are not far, air line distance 20m; (2) the outer row's of chimney gas has certain temperature, can reach 75.8 ℃ through measuring chimney external temperature, quite approaching with the temperature of 90 ℃ of left and right in powder concentrator.
Utility model content
The technical problems to be solved in the utility model is: a kind of recycling device of cement grinding mill hot blast is provided, and the cement material of can efficient solution determining in powder concentrator is bonding serious, affects the production of cement and the problem of product quality.
To achieve these goals, the technical solution adopted in the utility model is: the recycling device of cement grinding mill hot blast, comprise on cement grinding mill main exhaust fan for discharging the chimney of hot blast and being positioned at wind entrance and the Secondary Air entrance on powder concentrator, on chimney, be connected with a road hot waste gas pipeline, the outlet of hot waste gas pipeline is connected with the Secondary Air entrance of powder concentrator; Described hot waste gas pipeline comprises gas flow siphunculus and is set in the insulating tube of gas flow siphunculus outside, in gas flow siphunculus, be provided with the filter screen that stops solid impurity, a side that is positioned at filter screen is connected with the delivery pipe for discharging solid impurity on gas flow siphunculus, delivery pipe passes the tube wall of gas flow siphunculus and insulating tube and has an external part, bulkhgead gate is installed on external part, and delivery pipe is positioned at hot waste gas by the side before filter screen.
The below of described insulating tube is provided with support.
The beneficial effect that the utility model brings is:
The utility model is provided with hot waste gas pipeline between cement grinding mill and powder concentrator, the high temperature hot gas of discharging in cement grinding mill main exhaust fan is introduced to the Secondary Air entrance of powder concentrator, effectively reduce the internal-external temperature difference of powder concentrator, can prevent the phenomenon that thin material of cement bonds, stops up on guide vane for powder dressing machines; And effective and reasonable utilization the high-temp waste gas in cement grinding mill main exhaust fan, do not need another frame stove that hot blast is provided, saved resource.
Hot waste gas pipeline comprises gas flow siphunculus and the insulating tube that is set in gas flow siphunculus outside, and hot waste gas flows in gas flow siphunculus, and longer because of hot waste gas pipeline, hot waste gas can cause temperature to reduce in course of conveying, and insulating tube can play the effect of insulation.
In gas flow siphunculus, be provided with the filter screen that stops solid impurity, a side that is positioned at filter screen is connected with the delivery pipe for discharging solid impurity on gas flow siphunculus, delivery pipe passes the tube wall of gas flow siphunculus and insulating tube and has an external part, bulkhgead gate is installed on external part, and delivery pipe is positioned at hot waste gas by the side before filter screen.Because the hot waste gas that cement grinding mill is discharged contains more solid impurity dust, filter screen can eject by delivery pipe after solid impurity is stopped, has improved the degree of purity that enters the hot waste gas in powder concentrator.
Accompanying drawing explanation
Fig. 1 is the overall structural representation of the utility model embodiment;
Fig. 2 is the structural representation of the utility model hot waste gas pipeline.
Reference numeral: 1, a wind entrance, 2, powder concentrator, 3, Secondary Air entrance, 4, dust-precipitator, 5, hot waste gas pipeline, 6, chimney, 7, gas flow siphunculus, 8, filter screen, 9, insulating tube, 10, delivery pipe, 11, bulkhgead gate, 12, support.
The specific embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
As shown in the figure, the recycling device of cement grinding mill hot blast, comprise on cement grinding mill main exhaust fan for discharging the chimney 6 of hot blast and being positioned at wind entrance 1 and the Secondary Air entrance 3 on powder concentrator 2, on chimney 6, be connected with a road hot waste gas pipeline 5, the outlet of hot waste gas pipeline 5 is connected with the Secondary Air entrance 3 of powder concentrator 2; Described hot waste gas pipeline 5 comprises gas flow siphunculus 7 and is set in the insulating tube 9 of gas flow siphunculus 7 outsides, be provided with the filter screen 8 that stops solid impurity 7 li of gas flow siphunculus, a side that is positioned at filter screen 8 is connected with the delivery pipe 10 for discharging solid impurity on gas flow siphunculus 7, delivery pipe 10 passes the tube wall of gas flow siphunculus 7 and insulating tube 9 and has an external part, bulkhgead gate 11 is installed on external part, and delivery pipe 10 is positioned at hot waste gas by the side before filter screen 8.
The below of described insulating tube 9 is provided with support 12.
On described powder concentrator 2, be also connected with dust-precipitator 4.
Hot waste gas pipeline 5 comprises gas flow siphunculus 7 and the insulating tube 9 that is set in gas flow siphunculus 7 outsides, and hot waste gas flows 7 li of gas flow siphunculus, and insulating tube 9 plays the effect of insulation.
Be provided with the filter screen 8 that stops solid impurity 7 li of gas flow siphunculus, a side that is positioned at filter screen 8 is connected with the delivery pipe 10 for discharging solid impurity on gas flow siphunculus 7, delivery pipe 10 passes the tube wall of gas flow siphunculus 7 and insulating tube 9 and has an external part, bulkhgead gate 11 is installed on external part, and delivery pipe 10 is positioned at hot waste gas by the side before filter screen 8, because the hot waste gas that cement grinding mill is discharged contains more solid impurity dust, after filter screen 8 stops solid impurity, can regularly open bulkhgead gate 11, then eject by delivery pipe 10, improve the degree of purity that enters the hot waste gas in powder concentrator 2.
Long 20 meters of hot waste gas pipeline 5, diameter are 1.5 meters of left and right, and pipeline is heavier, therefore below the insulating tube 9 of hot waste gas pipeline 5, are provided with support 12 and support.
Claims (2)
1. the recycling device of cement grinding mill hot blast, comprise on cement grinding mill main exhaust fan for discharging the chimney (6) of hot blast and being positioned at a wind entrance (1) and the Secondary Air entrance (3) on powder concentrator (2), it is characterized in that: on chimney (6), be connected with a road hot waste gas pipeline (5), the outlet of hot waste gas pipeline (5) is connected with the Secondary Air entrance (3) of powder concentrator (2), described hot waste gas pipeline (5) comprises gas flow siphunculus (7) and is set in the outside insulating tube (9) of gas flow siphunculus (7), at the inner filter screen (8) that stops solid impurity that is provided with of gas flow siphunculus (7), a side that is positioned at filter screen (8) is connected with the delivery pipe (10) for discharging solid impurity on gas flow siphunculus (7), delivery pipe (10) passes the tube wall of gas flow siphunculus (7) and insulating tube (9) and has an external part, bulkhgead gate (11) is installed on external part, and delivery pipe (10) is positioned at hot waste gas by the front side of filter screen (8).
2. the recycling device of cement grinding mill hot blast as claimed in claim 1, is characterized in that: the below of described insulating tube (9) is provided with support (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420018616.7U CN203648680U (en) | 2014-01-13 | 2014-01-13 | Circulating utilization device for hot air of cement grinding mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420018616.7U CN203648680U (en) | 2014-01-13 | 2014-01-13 | Circulating utilization device for hot air of cement grinding mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203648680U true CN203648680U (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420018616.7U Expired - Fee Related CN203648680U (en) | 2014-01-13 | 2014-01-13 | Circulating utilization device for hot air of cement grinding mill |
Country Status (1)
| Country | Link |
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| CN (1) | CN203648680U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113426563A (en) * | 2021-06-26 | 2021-09-24 | 黑龙江省宾州水泥有限公司 | Hot air recycling device for cement mill |
-
2014
- 2014-01-13 CN CN201420018616.7U patent/CN203648680U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113426563A (en) * | 2021-06-26 | 2021-09-24 | 黑龙江省宾州水泥有限公司 | Hot air recycling device for cement mill |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20170113 |