CN203342903U - Energy-saving and emission-reduction device used for industrial vertical mill - Google Patents
Energy-saving and emission-reduction device used for industrial vertical mill Download PDFInfo
- Publication number
- CN203342903U CN203342903U CN 201320283255 CN201320283255U CN203342903U CN 203342903 U CN203342903 U CN 203342903U CN 201320283255 CN201320283255 CN 201320283255 CN 201320283255 U CN201320283255 U CN 201320283255U CN 203342903 U CN203342903 U CN 203342903U
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- pipe
- shaped pipe
- heat exchanger
- vertical mill
- backwind tube
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- 238000007789 sealing Methods 0.000 claims abstract description 4
- 241000283216 Phocidae Species 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 239000000428 dust Substances 0.000 abstract description 10
- 239000002918 waste heat Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000002035 prolonged Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 8
- 238000000227 grinding Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 201000010874 syndrome Diseases 0.000 description 3
- 239000004566 building material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000012054 meals Nutrition 0.000 description 2
- 230000000505 pernicious Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 229920002456 HOTAIR Polymers 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Abstract
The utility model discloses an energy-saving and emission-reduction device used for an industrial vertical mill. The device comprises a hot blast stove, a vertical mill, a dust collector, a fan, an air regulation valve and a chimney which are connected sequentially through pipelines, wherein a t-branch pipe is arranged between the fan and the chimney, two ends of the t-branch pipe are connected with the fan and the chimney respectively, and another end of the t-branch pipe is connected with an air outlet of the hot blast stove through an air return pipe; and the air regulation valve is arranged in the t-branch pipe, a U-shaped pipe is arranged on the air return pipe, a heat exchanger is arranged in the position of the U-shaped pipe, cold ends of the heat exchanger are mounted in the U-shaped pipe, a hot end of the heat exchanger is mounted at an outlet of the U-shaped pipe, and a self-sealing drainage pipe is arranged at the bottom of the U-shaped pipe. The device sufficiently recycles waste heat of tail wind, and adopts the U-shaped pipe to be matched with the heat exchanger for removing water in the tail wind, so that the efficiency of the dust collector is improved, the work efficiency of the dust collector is improved, the load of the fan is reduced, the power consumption per unit of a product is reduced, the service life of a dust collecting bag is prolonged, and the production cost is further reduced.
Description
Technical field
The utility model relates to a kind of vertical mill system, particularly a kind of energy-saving emission-reducing apparatus for industrial Vertical Mill.
Background technology
The industry Vertical Mill has the advantages such as technique is simple, mill efficiency is high, energy consumption is low, the unit ability is large, occupation area of equipment is little, is replacing rapidly traditional grinding process, in industries such as building materials, metallurgy, coals, is used widely.
In the Vertical Mill production process, material enters Vertical Mill, be extruded fragmentation, grinding between grinding roller and mill, the material after grinding is blown afloat and sends into the powder concentrator that is positioned at Vertical Mill top by the hot blast from hot-blast stove, by powder concentrator, the material after grinding is divided into to meal and fine powder.Fine powder is brought to dust-precipitator by thermal current, after collecting after filtration, sends into warehouse for finished product.In this process, slag and hot-air produce heat exchange, and moisture content is dried.Meal falls back on mill by grinding again, and tail wind is discharged into atmosphere.
The water content of material before entering Vertical Mill generally is not less than 8%, in order to maintain material bed stablizing on mill, also needs timely and appropriate discovery to spray water to the bed of material.Because thermal current contains moisture content, in order to guarantee the Quality and yield of product, in the service life of extension device consumable accessory, the outlet wind-warm syndrome of Vertical Mill must be higher than the steam dew-point temperature more than 20 degrees centigrade.
Therefore, vertical mill system contains moisture content, heat, dust and other all kinds of pernicious gases in the tail wind to airborne release.In order to reclaim heat and dust to reach the effect of energy-saving and emission-reduction, industrial trying in recent years installed backwind tube additional on vertical mill system, and the waste heat in the hot tail wind of part (<50%) is utilized.Moisture but this has also circulated simultaneously in tail wind, improved the water capacity of system, makes the moisture balance in vertical mill system wayward, the easy dewfall of dust-precipitator.
It is all that single argument is controlled that current industrial Vertical Mill moisture balance is controlled, and namely the experience of single temperature variable is controlled.System running temperature substantially constant, insensitive to system water capacity and environmental temperature fluctuation.This has increased energy consumption, has reduced the operational efficiency of dust-precipitator and the service life of dust collecting sleeve.
In recent years, country-driven energy-saving and emission-reduction policy, particularly proposed stricter requirement to the industrial discharge total amount since 2013, makes building materials grinding industry be faced with formidable challenges in the environmental protection and energy saving link.
Reduce the discharge of industrial vertical mill system, increase the utilization rate of waste heat, key issue is that the control of dust-precipitator operating temperature and tail wind dewater.
The utility model content
The utility model, for above-mentioned the deficiencies in the prior art, provides a kind of energy-saving emission-reducing apparatus that can be dewatered to the tail wind of vertical mill system, in the utilization rate that increases waste heat, has improved the operational efficiency of dust-precipitator and the service life of dust collecting sleeve.
The technical solution of the utility model is achieved in that
A kind of energy-saving emission-reducing apparatus for industrial Vertical Mill, comprise by pipeline connected hot-blast stove in turn, Vertical Mill, dust-precipitator, blower fan, adjusting valve and chimney, be provided with a three-way pipe between blower fan and chimney, the two ends of three-way pipe are connecting fan and chimney respectively, the other end of three-way pipe connects the air outlet of hot-blast stove by backwind tube, adjusting valve is arranged in three-way pipe, be provided with the U-shaped pipe on backwind tube, at the U-shaped pipe, place is provided with heat exchanger, the cold junction of heat exchanger is arranged in the U-shaped pipe, the hot junction of heat exchanger is arranged on the exit position of U-shaped pipe, be provided with the self sealss drainpipe in the bottom of U-shaped pipe.
As preferably, the cross-sectional area of U-shaped pipe is greater than the cross-sectional area of backwind tube.The Main Function of U-shaped pipe is to reduce wind speed, thereby can reduce the wind speed of tail wind, makes the moisture content in tail wind have time enough to separate.The existence form of water in tail gas has two kinds, and the one, gas, the 2nd, the liquid state existed with little water droplet form, i.e. water smoke.Under the condition of high wind speed, water smoke can't be separated from air-flow.Therefore need the U-shaped pipe to reduce wind speed, a metastable environment is provided, make little water droplet the time enough cohesion be arranged and separate from thermal current.
As preferably, the cross-sectional area of U-shaped pipe is 5～6 times of backwind tube cross-sectional area.Make wind speed drop to 3 meter per second left and right, thereby can effectively reduce wind speed, make the moisture content in tail wind have time enough to separate.
As preferably, be provided with the heat exchanger for the air inlet of preheating heat wind furnace on this section backwind tube between U-shaped pipe and three-way pipe, heat exchanger is a sleeve pipe, casing pipe sleeve is located on backwind tube, the caliber of sleeve pipe is greater than the caliber of backwind tube, and the sealing of the tube wall of the two ends of sleeve pipe and backwind tube is connected, and at an end of sleeve pipe sidewall, is provided with open air inlet, the other end at the sleeve pipe sidewall is provided with gas outlet, and the gas outlet of sleeve pipe is connected to the air inlet of hot-blast stove by airduct.Thereby the fresh air that can preheating initially enters into hot-blast stove.
Effect of the present utility model is as follows: the utlity model has double benefit, economic benefit and social benefit.Fully recycling of tail wind waste heat, and adopt the U-shaped pipe to coordinate heat exchanger to be dewatered to tail wind, having improved the efficiency of dust-precipitator, the raising of dust-precipitator operating efficiency also can alleviate the load of blower fan, reduces the power consumption of unit product.The prolongation in dust collecting sleeve service life, reduced again production cost.Tail wind due to 90% is circulated, and the discharge capacity of dust can reduce by 90%.Other pernicious gas in tail wind can be removed by mature technology.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
The specific embodiment of the present utility model is as follows:
Embodiment: a kind of energy-saving emission-reducing apparatus for industrial Vertical Mill, as shown in Figure 1, comprise by pipeline connected hot-blast stove 1 in turn, Vertical Mill 2, dust-precipitator 3, blower fan 4, adjusting valve 5 and chimney 6, be provided with a three-way pipe 7 between blower fan 4 and chimney 6, the two ends of three-way pipe 7 are connecting fan 4 and chimney 6 respectively, the other end of three-way pipe 7 connects the air outlet of hot-blast stove 1 by backwind tube 8, adjusting valve 5 is arranged in three-way pipe 7, adjusting valve 5 is a tee ball valve, be provided with U-shaped pipe 9 on backwind tube 8, at the U-shaped pipe, 9 places are provided with heat exchanger, the cold junction 10 of heat exchanger is arranged in U-shaped pipe 9, the hot junction 11 of heat exchanger is arranged on the exit position of U-shaped pipe 9, be provided with self sealss drainpipe 12 in the bottom of U-shaped pipe 9.Self sealss drainpipe 12 is a U-shaped drainpipe, in U-shaped drainpipe all the time water storage form water seal and spill from here to prevent tail wind, and the water of 9 li of U-shaped pipes can spill out by self sealss drainpipe 12.
Tail wind enters U-shaped pipe 9 through backwind tube 8, through the cold junction 10 of over-heat-exchanger, is freezed, and by the cohesion of the aqueous water in tail wind, separate, tail wind is heated through the hot junction 11 of over-heat-exchanger again, again heats up.
The cross-sectional area of U-shaped pipe 9 is greater than the cross-sectional area of backwind tube 8.Be provided with the heat exchanger 13 for the air inlet of preheating heat wind furnace on this section backwind tube between U-shaped pipe 9 and three-way pipe 7, heat exchanger 13 is a sleeve pipe, casing pipe sleeve is located on backwind tube 8, the caliber of sleeve pipe is greater than the caliber of backwind tube 8, and the two ends of sleeve pipe are connected with the sealing of the tube wall of backwind tube, an end at the sleeve pipe sidewall is provided with open air inlet 14, at the other end of sleeve pipe sidewall, is provided with gas outlet 22, and the gas outlet 22 of sleeve pipe is connected to the air inlet of hot-blast stove 1 by airduct 15.The setting of heat exchanger 13 not only can improve the wind-warm syndrome of hot-blast stove 1 air inlet, and can reduce tail wind wind-warm syndrome prior to the U-shaped pipe, and tail wind is dewatered in advance.
Claims (4)
1. the energy-saving emission-reducing apparatus for industrial Vertical Mill, comprise by pipeline connected hot-blast stove in turn, Vertical Mill, dust-precipitator, blower fan, adjusting valve and chimney, be provided with a three-way pipe between blower fan and chimney, the two ends of three-way pipe are connecting fan and chimney respectively, the other end of three-way pipe connects the air outlet of hot-blast stove by backwind tube, adjusting valve is arranged in three-way pipe, it is characterized in that: be provided with the U-shaped pipe on backwind tube, at the U-shaped pipe, place is provided with heat exchanger, the cold junction of heat exchanger is arranged in the U-shaped pipe, the hot junction of heat exchanger is arranged on the exit position of U-shaped pipe, be provided with the self sealss drainpipe in the bottom of U-shaped pipe.
2. a kind of energy-saving emission-reducing apparatus for industrial Vertical Mill according to claim 1, it is characterized in that: the cross-sectional area of U-shaped pipe is greater than the cross-sectional area of backwind tube.
3. a kind of energy-saving emission-reducing apparatus for industrial Vertical Mill according to claim 2, it is characterized in that: the cross-sectional area of U-shaped pipe is 5～6 times of backwind tube cross-sectional area.
4. a kind of energy-saving emission-reducing apparatus for industrial Vertical Mill according to claim 1, it is characterized in that: on this section backwind tube between U-shaped pipe and three-way pipe, be provided with the heat exchanger for the air inlet of preheating heat wind furnace, heat exchanger is a sleeve pipe, casing pipe sleeve is located on backwind tube, the caliber of sleeve pipe is greater than the caliber of backwind tube, and the two ends of sleeve pipe are connected with the sealing of the tube wall of backwind tube, an end at the sleeve pipe sidewall is provided with open air inlet, the other end at the sleeve pipe sidewall is provided with gas outlet, and the gas outlet of sleeve pipe is connected to the air inlet of hot-blast stove by airduct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320283255 CN203342903U (en) | 2013-05-21 | 2013-05-21 | Energy-saving and emission-reduction device used for industrial vertical mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320283255 CN203342903U (en) | 2013-05-21 | 2013-05-21 | Energy-saving and emission-reduction device used for industrial vertical mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203342903U true CN203342903U (en) | 2013-12-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320283255 Withdrawn - After Issue CN203342903U (en) | 2013-05-21 | 2013-05-21 | Energy-saving and emission-reduction device used for industrial vertical mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203342903U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301921A (en) * | 2013-05-21 | 2013-09-18 | 吴海鸥 | Energy-saving and emission-reducing device and method for industrial vertical mill |
-
2013
- 2013-05-21 CN CN 201320283255 patent/CN203342903U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301921A (en) * | 2013-05-21 | 2013-09-18 | 吴海鸥 | Energy-saving and emission-reducing device and method for industrial vertical mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131218 Effective date of abandoning: 20140820 |
|
| RGAV | Abandon patent right to avoid regrant |