CN206291740U - Rotary kiln gas recovery system - Google Patents
Rotary kiln gas recovery system Download PDFInfo
- Publication number
- CN206291740U CN206291740U CN201621327321.3U CN201621327321U CN206291740U CN 206291740 U CN206291740 U CN 206291740U CN 201621327321 U CN201621327321 U CN 201621327321U CN 206291740 U CN206291740 U CN 206291740U
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- CN
- China
- Prior art keywords
- rotary kiln
- dryer
- exhaust
- recovery system
- waste gas
- 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.)
- Withdrawn - After Issue
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Drying Of Solid Materials (AREA)
Abstract
The utility model belongs to metallurgy lime calcining technology field, specifically a kind of rotary kiln gas recovery system.Including rotary kiln, rotary kiln exhaust emission pipe, rotary kiln waste gas discharge chimney, moulded coal hot air duct, coal-burning boiler and dryer, wherein one end of rotary kiln exhaust emission pipe connects with the floss hole of rotary kiln, the other end is connected with the bottom inlet and moulded coal hot air duct of rotary kiln waste gas discharge chimney, the moulded coal hot air duct is connected by the preheating chamber of coal-burning boiler with dryer, and the regulation flashboard of regulation entrance size is provided with the bottom inlet of the rotary kiln waste gas discharge chimney.The utility model dries coal briquette product using the preheating of the flue gas of the discharge of rotary kiln, so as to reach the purpose of exhaust gas utilization, heat recovery.
Description
Technical field
The utility model belongs to metallurgy lime calcining technology field, specifically a kind of rotary kiln gas recovery system.
Background technology
The main equipment of metallurgy lime calcination system is rotary kiln, and fuel is bituminous coal, and it is 200 to grind to form fineness by Vertical Mill
After the coal dust of mesh or so, it is blown by metering device via Powered Air and is burnt to the burner in rotary kiln.According to heat
Work theoretical calculation, every kilogram of coal dust burns need the air of 8-10Nm3 completely；800 tons of production lines of active lime of daily output, per small
When discharge amount of exhaust gas about 200000Nm3/h；EGT is at 160-200 DEG C.At present, domestic production enterprise more than 90% is all
Waste gas is directly discharged to air, the total emission volumn in area is not only increased, enterprise also have lost the no small thermal source cost of proportion
Fund；According to theoretical calculation, p=0.746Kg/m3；CP=1.02 (KJ/kg. DEG C)；I=193KJ/kg；Then calculate cigarette per hour
The mark coal of gas heat content loss is 1018Kg, is converted into the injection coal of Q=6000Kcal/kg for 1187Kg, is roughly equal to RMB 950
Unit.
Utility model content
Regarding to the issue above, the purpose of this utility model is to provide a kind of rotary kiln gas recovery system, to reduce back
The discharge capacity of rotary kiln flue tail gas, improves waste gas recovery utilization rate.
To achieve these goals, the utility model uses following technical scheme：
A kind of rotary kiln gas recovery system, including rotary kiln, rotary kiln exhaust emission pipe, rotary kiln waste gas discharge cigarette
The floss hole of chimney, moulded coal hot air duct, coal-burning boiler and dryer, wherein one end of rotary kiln exhaust emission pipe and rotary kiln
Connection, the other end is connected with the bottom inlet and moulded coal hot air duct of rotary kiln waste gas discharge chimney, the moulded coal hot air duct
Connected with dryer by the preheating chamber of coal-burning boiler, be provided with the bottom inlet of the rotary kiln waste gas discharge chimney adjust into
The regulation flashboard of mouth size.
Electric butterfly valve a, deduster a and blower fan a are sequentially provided with along smoke discharging direction on the rotary kiln exhaust emission pipe,
The air outlet of the blower fan a is connected by connecting pipe with the bottom inlet of rotary kiln waste gas discharge chimney, the moulded coal hot blast
Pipeline is connected with the connecting pipe.
The moulded coal hot air duct includes boiler preheating chamber air inlet side pipeline and boiler preheating chamber exhaust side pipeline, institute
State the diameter of the diameter less than preheating chamber air inlet side pipeline of preheating chamber exhaust side pipeline.
Roundabout air channel is provided with the preheating chamber of the coal-burning boiler, into the waste gas in preheating chamber by roundabout air channel heel row
Go out.
The bottom and top of the dryer are respectively equipped with main air intake passage and main air exhaust passage, with the main air intake passage
The moulded coal hot air duct of connection is provided with valve and blower fan b.
The multiple branch air channels connected with main air intake passage are provided with the dryer, on each branch air channel along its length
Multiple hot blast discharge pipes are connected with, multiple exhaust vents are distributed with each hot blast discharge pipe, be provided with many at the top of the dryer
Individual dryer exhaust outlet, each dryer exhaust outlet is connected with main air exhaust passage.
The main air exhaust passage of the dryer is connected by dryer exhaust piping with drying oven waste gas discharge chimney.It is described
On dryer exhaust piping deduster b and blower fan c are sequentially provided with along discharge directions.The drying oven waste gas discharge chimney is provided with
Electric butterfly valve b.Heat-insulation layer is provided with the outside of the rotary kiln exhaust emission pipe and moulded coal hot air duct.
Advantage of the present utility model and beneficial effect are：
1. the utility model dries coal briquette product using the preheating of the flue gas (200 DEG C of gas temperature) of the discharge of rotary kiln
Product, so as to reach the purpose of exhaust gas utilization, heat recovery.
2. the utility model is needing to change when using exhausted air quantity of briquette production line, there is provided the aperture of control valve, comes real
The waste gas of existing different production lines and the demand of temperature.
3. near 60 DEG C of EGT of the utility model after drying oven, then the discharge after sack cleaner purification
Production system enters air, and purified gas dustiness is ＜ 30mg/m3；Reach the highest standard scope of environment protection emission index
It is interior.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is enlarged drawing at the A in Fig. 1；
Fig. 3 is that the hot blast in the preheating chamber of coal-burning boiler in the utility model flows to schematic diagram；
Fig. 4 flows to schematic diagram for the hot blast inside dryer in the utility model.
In figure：1 is burner, and 2 is rotary kiln, and 3 is shaft preheater, and 4 is rotary kiln exhaust emission pipe, and 5 is electronic butterfly
Valve a, 6 is deduster a, and 7 is blower fan a, and 8 is regulation flashboard, and 9 is rotary kiln waste gas discharge chimney, and 10 is moulded coal hot air duct, 11
It is coal-burning boiler, 111 is preheating chamber, and 112 is roundabout air channel, and 12 is valve, and 13 is blower fan b, and 14 is dryer, is entered based on 141
Wind passage, 142 is branch air channel, and 143 is hot blast discharge pipe, and 144 is dryer exhaust outlet, and 145 is main air exhaust passage, and 15 is to dry
Dry machine exhaust piping, 16 is deduster b, and 17 is blower fan c, and 18 is electric butterfly valve b, and 19 is drying oven waste gas discharge chimney.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage are clearer, below in conjunction with the accompanying drawings and specific implementation
Example is described in detail to the utility model.
As shown in Figure 1-2, a kind of rotary kiln gas recovery system that the utility model is provided, including rotary kiln 2, rotary kiln
Exhaust emission pipe 4, rotary kiln waste gas discharge chimney 9, moulded coal hot air duct 10, coal-burning boiler 11 and dryer 14, wherein returning
One end of rotary kiln exhaust emission pipe 4 connects with the floss hole of rotary kiln 2, the bottom of the other end and rotary kiln waste gas discharge chimney 9
Portion's entrance and moulded coal hot air duct 10 are connected, preheating chamber 111 and drying of the moulded coal hot air duct 10 by coal-burning boiler 11
Machine 14 is connected, and the regulation flashboard 8 of regulation entrance size is provided with the bottom inlet of the rotary kiln waste gas discharge chimney 9.
On the rotary kiln exhaust emission pipe 4 electric butterfly valve a5, deduster a6 and wind are sequentially provided with along smoke discharging direction
The air outlet of machine a7, the blower fan a7 is connected by connecting pipe with the bottom inlet of rotary kiln waste gas discharge chimney 9, the type
Coal hot air duct 10 is connected with the connecting pipe.
The moulded coal hot air duct 10 includes boiler preheating chamber air inlet side pipeline and boiler preheating chamber exhaust side pipeline,
The diameter of the preheating chamber exhaust side pipeline is less than the diameter with preheating chamber air inlet side pipeline.The rotary kiln waste gas discharge
The outside of pipeline 4 and moulded coal hot air duct 10 is provided with heat-insulation layer.
As shown in figure 3, roundabout air channel 112 is provided with the preheating chamber 111 of the coal-burning boiler 11, into preheating chamber 111
Waste gas discharged by behind roundabout air channel 112.
As shown in figure 4, the bottom and top of the dryer 14 are respectively equipped with main air intake passage 141 and main air exhaust passage
145, the moulded coal hot air duct 10 being connected with the main air intake passage 141 is provided with valve 12 and blower fan b13.
The multiple branch air channels 142 connected with main air intake passage 141, each branch air channel 142 are provided with the dryer 14
On be connected with multiple hot blast discharge pipes 143 along its length, multiple exhaust vents are distributed with each hot blast discharge pipe 143, it is described
The top of dryer 14 is provided with multiple dryer exhaust outlets 144, and each dryer exhaust outlet 144 is connected with main air exhaust passage 145.
The main air exhaust passage 145 of the dryer 14 is connected by dryer exhaust piping 15 with drying oven waste gas discharge chimney 19.
On the dryer exhaust piping 15 deduster b16 and blower fan c17 are sequentially provided with along discharge directions.The drying oven
Waste gas discharge chimney 19 is provided with electric butterfly valve b18.
Embodiment
It is useless in the outlet port of tail gas exhaust machine (blower fan a7) (200 DEG C of gas temperature) of rotary kiln 2, that is, rotary kiln
Position of the bottom of gas blowdown stack 9 far from about 3 meters of ground, positioned at the bottom of fan outlet and rotary kiln waste gas discharge chimney 9
On metallic conduit (connecting pipe) between entrance (away from about 3 meters of ground), a regulation flashboard 8 for rectangle, the regulation are mounted with
Flashboard 8 possesses the function of the bottom inlet aperture of regulation rotary kiln waste gas discharge chimney 9.
The upper end of the metallic conduit between regulation flashboard 8 and blower fan a7 outlets, installs the metal tube of diameter phi 1800mm additional
Road (moulded coal hot air duct 10), extended distance about 200m is connected in the stove of coal-burning boiler 11 of briquette production line, then through straight
The metallic conduit (moulded coal hot air duct 10) of footpath φ 1500mm is sent in dryer 14, using flue gas (200 DEG C of gas temperature)
Preheat to dry coal briquette product, so as to reach the purpose of exhaust gas utilization, heat recovery.
During normal production, the aperture that flashboard 8 closes about 80% will be adjusted, the waste gas of blower fan a7 outputs diametrically φ 1800mm
The metallic conduit coal-burning boiler 11 that flows to briquette production line body of heater (preheating chamber) in, then by the metal of diameter phi 1500mm
Pipeline is sent in dryer 14, realizes being that 10% briquette prod is dried to water content.
When needing to change when using exhausted air quantity of briquette production line, different production lines are realized by adjusting the aperture of flashboard 8
Waste gas and temperature demand.
EGT after drying oven is down to 60 DEG C, then by drying oven waste gas discharge after sack cleaner purification
The discharge of chimney 19 production system enters air, and purified gas dustiness is ＜ 30mg/m3；Reach environment protection emission index most
In the range of high standard.
Implementation method of the present utility model is the foregoing is only, protection domain of the present utility model is not intended to limit.It is all
Any modification, equivalent substitution and improvements, extension made within spirit of the present utility model and principle etc., is all contained in this reality
With in new protection domain.
Claims (10)
1. a kind of rotary kiln gas recovery system, it is characterised in that including rotary kiln (2), rotary kiln exhaust emission pipe (4),
Rotary kiln waste gas discharge chimney (9), moulded coal hot air duct (10), coal-burning boiler (11) and dryer (14), wherein rotary kiln give up
One end of gas discharge tube (4) connects with the floss hole of rotary kiln (2), the bottom of the other end and rotary kiln waste gas discharge chimney (9)
Portion's entrance and moulded coal hot air duct (10) are connected, the moulded coal hot air duct (10) by coal-burning boiler (11) preheating chamber
(111) connected with dryer (14), regulation entrance size is provided with the bottom inlet of the rotary kiln waste gas discharge chimney (9)
Regulation flashboard (8).
2. rotary kiln gas recovery system according to claim 1, it is characterised in that the rotary kiln exhaust emission pipe
(4) electric butterfly valve a (5), deduster a (6) and blower fan a (7), the air-out of the blower fan a (7) are sequentially provided with along smoke discharging direction on
Mouthful connected with the bottom inlet of rotary kiln waste gas discharge chimney (9) by connecting pipe, the moulded coal hot air duct (10) and institute
State connecting pipe connection.
3. rotary kiln gas recovery system according to claim 1, it is characterised in that moulded coal hot air duct (10) bag
Include boiler preheating chamber air inlet side pipeline and boiler preheating chamber exhaust side pipeline, the diameter of the preheating chamber exhaust side pipeline
Less than the diameter of preheating chamber air inlet side pipeline.
4. rotary kiln gas recovery system according to claim 1, it is characterised in that the preheating of the coal-burning boiler (11)
Roundabout air channel (112) is provided with room (111), is discharged afterwards by roundabout air channel (112) into the waste gas in preheating chamber (111).
5. rotary kiln gas recovery system according to claim 1, it is characterised in that the bottom of the dryer (14) and
Top is respectively equipped with main air intake passage (141) and main air exhaust passage (145), the moulded coal being connected with the main air intake passage (141)
Hot air duct (10) is provided with valve (12) and blower fan b (13).
6. rotary kiln gas recovery system according to claim 5, it is characterised in that be provided with the dryer (14) with
Multiple branch air channels (142) of main air intake passage (141) connection, multiple is connected with each branch air channel (142) along its length
Hot blast discharge pipe (143), is distributed with multiple exhaust vents on each hot blast discharge pipe (143), set at the top of the dryer (14)
There are multiple dryer exhaust outlets (144), each dryer exhaust outlet (144) connects with main air exhaust passage (145).
7. rotary kiln gas recovery system according to claim 5, it is characterised in that the main air draft of the dryer (14)
Passage (145) is connected by dryer exhaust piping (15) with drying oven waste gas discharge chimney (19).
8. rotary kiln gas recovery system according to claim 7, it is characterised in that the dryer exhaust piping (15)
On be sequentially provided with deduster b (16) and blower fan c (17) along discharge directions.
9. rotary kiln gas recovery system according to claim 7, it is characterised in that the drying oven waste gas discharge chimney
(19) it is provided with electric butterfly valve b (18).
10. rotary kiln gas recovery system according to claim 1, it is characterised in that the rotary kiln exhaust pipe
Heat-insulation layer is provided with the outside of road (4) and moulded coal hot air duct (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621327321.3U CN206291740U (en) | 2016-12-06 | 2016-12-06 | Rotary kiln gas recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621327321.3U CN206291740U (en) | 2016-12-06 | 2016-12-06 | Rotary kiln gas recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206291740U true CN206291740U (en) | 2017-06-30 |
Family
ID=59096283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621327321.3U Withdrawn - After Issue CN206291740U (en) | 2016-12-06 | 2016-12-06 | Rotary kiln gas recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206291740U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106440841A (en) * | 2016-12-06 | 2017-02-22 | 丹东同合高新科技有限公司 | Exhaust gas recovery system for rotary kiln |
| CN107421340A (en) * | 2017-09-08 | 2017-12-01 | 晋城市科裕达铸造有限公司 | A kind of residual heat collection utilizes device |
| CN109779676A (en) * | 2019-03-11 | 2019-05-21 | 付耀文 | A kind of multi-functional pit mining dust-extraction unit |
-
2016
- 2016-12-06 CN CN201621327321.3U patent/CN206291740U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106440841A (en) * | 2016-12-06 | 2017-02-22 | 丹东同合高新科技有限公司 | Exhaust gas recovery system for rotary kiln |
| CN106440841B (en) * | 2016-12-06 | 2019-02-15 | 丹东同合高新科技有限公司 | A kind of rotary kiln gas recovery system |
| CN107421340A (en) * | 2017-09-08 | 2017-12-01 | 晋城市科裕达铸造有限公司 | A kind of residual heat collection utilizes device |
| CN109779676A (en) * | 2019-03-11 | 2019-05-21 | 付耀文 | A kind of multi-functional pit mining dust-extraction unit |
| CN109779676B (en) * | 2019-03-11 | 2020-08-25 | 新疆亚克斯资源开发股份有限公司 | Multifunctional mine mining dust removal device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170630 Effective date of abandoning: 20190215 |