CN206382120U - A kind of system for reclaiming moisture in mill coal drying tail gas - Google Patents
A kind of system for reclaiming moisture in mill coal drying tail gas Download PDFInfo
- Publication number
- CN206382120U CN206382120U CN201621199369.0U CN201621199369U CN206382120U CN 206382120 U CN206382120 U CN 206382120U CN 201621199369 U CN201621199369 U CN 201621199369U CN 206382120 U CN206382120 U CN 206382120U
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- coal
- tail gas
- electrostatic
- collection device
- moisture
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- 239000003245 coal Substances 0.000 title claims abstract description 121
- 238000001035 drying Methods 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 81
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 230000005686 electrostatic field Effects 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 52
- 239000002737 fuel gas Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 4
- 238000011084 recovery Methods 0.000 abstract description 6
- 239000011261 inert gas Substances 0.000 description 9
- 238000000926 separation method Methods 0.000 description 9
- 150000001450 anions Chemical class 0.000 description 6
- 239000003574 free electron Substances 0.000 description 5
- 230000005684 electric field Effects 0.000 description 4
- 238000002309 gasification Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 235000007926 Craterellus fallax Nutrition 0.000 description 1
- 240000007175 Datura inoxia Species 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
- Drying Of Solid Materials (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The utility model discloses a kind of system for reclaiming moisture in mill coal drying tail gas, including raw material coal bunker, coal pulverizer, bag filter, the circulating fan being sequentially connected, the hot-blast stove being connected simultaneously with coal pulverizer and circulating fan respectively, and electrostatic water collection device, electrostatic water collection device is connected with bag filter；Electrostatic water collection device interior energy produces electrostatic field.The system of moisture can effectively be reclaimed to moisture in tail gas in the recovery mill coal drying tail gas that the utility model is provided, and reduce exhaust emissions amount, while the water after reclaiming is recycled after being handled through water treatment system, save water resource.
Description
Technical field
The utility model is related to moisture in Coal Gasification Technology field, more particularly to a kind of recovery mill coal drying system tail gas
System.
Background technology
West area of the coal resource storage compared with horn of plenty being distributed in New Coal Chemical, these areas are ecological more fragile more,
Environmental contaminants capacity is small, and water resource is more deficient.Highly water intensive is New Coal Chemical key character, is also the bottle for restricting its development
Neck；Water consume is also the important indicator that coal chemical industry selects Coal Gasification Technology.Therefore, low water consumption be the important developing direction of coal gasification it
One.
Coal gasification requires that vaporized stove fine coal water content representative value is≤2%, and how hydrogeneous hot-blast stove is fuel used general
Element.Therefore, mill coal drying system has substantial amounts of water and arranged with outside tail gas, causes water resource waste.
Utility model content
In order to overcome the defect of prior art, the purpose of this utility model is to propose a kind of recovery mill coal drying system tail
Moisture in the system of moisture in gas, the tail gas produced using electrostatic water collection device to mill coal drying system is effectively reclaimed, and is subtracted
Lack exhaust emissions amount, while the water after reclaiming is recycled after being handled through water treatment system, save water resource.
For up to this purpose, the utility model provides following technical scheme：
The system of moisture in a kind of recovery mill coal drying system tail gas that the utility model is provided, including the original being sequentially connected
Expect coal bunker, coal pulverizer, bag filter, circulating fan, and be connected simultaneously with the coal pulverizer and the circulating fan respectively
Hot-blast stove, in addition to electrostatic water collection device, the electrostatic water collection device is connected with the bag filter；In the electrostatic water collection device
Electrostatic field can be produced.
In a specific technical scheme, the electrostatic water collection device includes water collection device, control system, high voltage device；
The control system controls the intensity of the high-pressure installation generation electrostatic field.
In another specific technical scheme, air cooling is provided between the electrostatic water collection device and the bag filter
Device.
In another specific technical scheme, in addition to water treatment system, the water treatment system and electrostatic receipts
Hydrophone is connected.
In another specific technical scheme, the electrostatic water collection device has offgas outlet and/or liquid outlet；It is described
Air-introduced machine is provided with offgas outlet, the air-introduced machine discharges tail gas；The water of the liquid outlet outflow enters at the water
Reason system is recycled.
In another specific technical scheme, it is provided with and is weighed to coal between the raw material coal bunker and the coal pulverizer
Machine；The Gravimetric Coal Feeders can be quantified to coal.
In another specific technical scheme, conveying worm is provided with the bag filter；The pocket type mistake
Drying fine coal in filter delivers to fine coal pressurization and induction system through the conveying worm.
In another specific technical scheme, the hot-blast stove has air intake and/or fuel gas entrance；Air is passed through
Air intake on the hot-blast stove enters the hot-blast stove；Fuel gas enters described through the fuel gas entrance on the hot-blast stove
Hot-blast stove.
In another specific technical scheme, air blower is provided with the air intake of the hot-blast stove.
The utility model additionally provides a kind of operating method for reclaiming moisture in mill coal drying tail gas, for above-mentioned recovery mill
The system that coal dries moisture in tail gas, implements as follows：
S00：Fuel gas and air enter burning generation high temperature inert gas in the hot-blast stove；
S10：Feed coal in the raw material coal bunker, which enters in the coal pulverizer, is ground into fine coal；The fine coal is by from institute
The high temperature inert gas for stating hot-blast stove is dried；
S20：Gas solid separation after drying fine coal in coal pulverizer is transported in the bag filter by high temperature inert gas；
S30：A part of gas separated in the bag filter is circulated through the circulating fan into the hot-blast stove
Use；Another part gas is cooled into the air cooler；The fine coal separated in the bag filter is sent to fine coal
Pressurization and induction system；
S40：The gas cooled by the air cooler enters in the electrostatic water collection device, and the moisture in gas is by described quiet
Free electron in electric water collection device in electrostatic field adheres to form water droplet particulate anion, and the water droplet particulate anion is made in electric field
With lower aggregation；
S50：The water assembled in the electrostatic water collection device enters Water Sproading processing links through liquid outlet；The electrostatic receives water
The tail gas that moisture is separated in device is discharged into air through the air-introduced machine.
In a specific technical scheme, in step S00, air is pressed and delivered to the hot-blast stove through the air blower
In；Burnt in the hot-blast stove generation high temperature inert gas temperature range be 150-300 DEG C.
In another specific technical scheme, in step S10, the feed coal in the raw material coal bunker is weighed described in
Entered after feeder Weighing in the coal pulverizer.
In another specific technical scheme, in step S20, the gas in the bag filter after gas solid separation
Fine coal containing less than 10mg/Nm3 (wet basis), air temperature ranges are 95~110 DEG C.
In another specific technical scheme, in step S30, the gas into the air cooler is cooled to 50~60
℃。
Operating method of the present utility model can be carried out in any suitable system, preferably in system of the present utility model
It is middle to carry out.
The beneficial effects of the utility model are：
1. the moisture in the tail gas produced using electrostatic water collection device to mill coal drying system is effectively reclaimed, tail is reduced
Gas discharge capacity, while the water after reclaiming is recycled after being handled through water treatment system, has saved water resource；
2. quantitative to coal using Gravimetric Coal Feeders between raw material coal bunker and coal pulverizer, effectively control mill coal drying system is negative
Lotus.
Brief description of the drawings
The schematic diagram of the system of moisture in a kind of recovery mill coal drying tail gas that Fig. 1 provides for the utility model embodiment.
In figure：
1st, raw material coal bunker；2nd, Gravimetric Coal Feeders；3rd, coal pulverizer；4th, hot-blast stove；5th, air blower；6th, bag filter；7th, spiral shell
Revolve conveyer；8th, circulating fan；9th, air cooler；10th, electrostatic water collection device；11st, air-introduced machine；12nd, water treatment system.
Embodiment
Below in conjunction with the utility model embodiment and accompanying drawing, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
Embodiment 1
The utility model embodiment provides a kind of system for reclaiming moisture in mill coal drying system tail gas, as shown in figure 1,
Including raw material coal bunker 1, Gravimetric Coal Feeders 2, coal pulverizer 3, hot-blast stove 4, air blower 5, bag filter 6, conveying worm 7, follow
Ring blower fan 8, air cooler 9, electrostatic water collection device 10, air-introduced machine 11, water treatment system 12, raw material coal bunker 1, coal pulverizer 3, bag type filtering
Device 6, circulating fan 8 are sequentially connected, and hot-blast stove 4 is connected with coal pulverizer 3 and circulating fan 8 simultaneously respectively.
Gravimetric Coal Feeders 2 are arranged between raw material coal bunker 1 and coal pulverizer 3, the fine coal from raw material coal bunker 1 by weigh to
Coal pulverizer 3 is sent to after the Weighing of coal machine 2, to realize the load for quantifying to coal and controlling mill coal drying system.Hot-blast stove 4 is set
Air intake and fuel gas entrance are equipped with, air is blown into hot-blast stove 4 by air blower 5 through air intake, with being entered by fuel gas
The fuel gas mixed combustion that mouth enters, to produce high temperature inert gas, is used for drying into the high temperature inert gas in coal pulverizer 3
With conveying fine coal.The drying fine coal conveyed by inert gas, which enters bag filter, to be carried out after gas solid separation, and fine coal is through spiral transferring
Machine 7 is sent to deliver to downstream fine coal pressurization and induction system.A gas part after filtering is circulated through circulating fan 8 into hot-blast stove 4
Use.
Electrostatic water collection device 10 is connected with bag filter 6, while being set between electrostatic water collection device 10 and bag filter 6
There is air cooler 9, after the gas after another part filtering from bag filter 6 is cooled down into air cooler 9 through air, enter in meditation
Electric water collection device 10.
Electrostatic water collection device 10 includes water collection device, control system and high voltage device；In control system control electrostatic water collection device
The intensity of electrostatic field.Gas after cooling produces substantial amounts of cation and free electron, free electron in the presence of electrostatic charge
To anode movement in the presence of electric field force, when the gas by particulate of water droplets, free electron is attached to water droplet particulate
Upper formation anion.Anion is gathered on anode in the presence of electric field force, and the moisture gathered together falls under gravity
Under, realize the separation of moisture in tail gas.
The Water Sproading reclaimed in electrostatic water collection device 10 to water treatment system 12 is recycled, to reduce water consume；Separation
Gas after moisture is expelled to atmospheric environment in the presence of air-introduced machine 11.
With reference to the system for reclaiming moisture in mill coal drying system tail gas in the utility model embodiment, describe in detail
The process of moisture in mill coal drying system tail gas is reclaimed using the system.
Feed coal in raw material coal bunker 1 is entered in coal pulverizer 3 by being sent to coal pulverizer 3 after the Weighing of Gravimetric Coal Feeders 2
It is ground into fine coal；Meanwhile, air is blown into hot-blast stove 4 by air blower 5 through air intake, with the combustion entered by fuel gas entrance
Expect gas mixed combustion, it is 150-300 DEG C of high temperature inert gas to produce temperature range.If higher than 300 DEG C, can be volatilized in one side coal
Go out tar, phenol etc., there is above volatile substance in recycle-water, it is impossible to recycled by simple water process；It can be waved in another aspect coal
Substantial amounts of effective gas (CO+H2) is sent, the effective tolerance for being transported to downstream is reduced.If temperature is less than 150 DEG C, it cannot be guaranteed that
Go out the effective temperature of the gas of coal pulverizer.Fine coal is dried into the high temperature inert gas in coal pulverizer 3, and fine coal is transported to
Gas solid separation is carried out in bag filter 6, the fine coal after separation delivers to downstream fine coal processing system through conveying worm 7, filtered
Gas afterwards contains the fine coal less than 10mg/Nm3 (wet basis), and air temperature ranges are 95~110 DEG C.If temperature is less than 95 DEG C,
Moisture content can not be evaporated in coal, if on the other hand temperature is higher than 110 DEG C of consumption on the one hand adding hot-blast stove fuel gas
The probability that coal is smoldered at this temperature in system increases, and can cause system shutdown.
A part of gas separated in bag filter 6 enters in hot-blast stove 4 through circulating fan 8 to be recycled；Another portion
Gas is divided to be cooled into air cooler 9 through air to 50~60 DEG C, afterwards into electrostatic water collection device 10.
It is attached by the free electron in electrostatic field in electrostatic water collection device 10 into the moisture in the gas in electrostatic water collection device 10
Formation water droplet particulate anion, water droplet particulate anion is gathered on anode under electric field action, and the moisture gathered together exists
Fallen under Action of Gravity Field, realize the separation of moisture in tail gas；
The Water Sproading reclaimed in electrostatic water collection device 10 to water treatment system 12 is recycled, to reduce water consume；Separation
Gas after moisture is expelled to atmospheric environment in the presence of air-introduced machine 11.
The utility model has the advantages that：In the tail gas produced using electrostatic water collection device 10 to mill coal drying system
Moisture effectively reclaimed, reduce exhaust emissions amount, at the same reclaim after water enter water treatment system handle recycle, section
About water resource；It is quantitative to coal using Gravimetric Coal Feeders 2 between raw material coal bunker 1 and coal pulverizer 3, effectively control mill coal drying system
Load.
It is described above, a kind of embodiment only of the present utility model, but protection domain of the present utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model is disclosed
Change or replacement, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with institute
Scope of the claims is stated to be defined.
Claims (9)
1. a kind of system for reclaiming moisture in mill coal drying tail gas, including raw material coal bunker (1), coal pulverizer (3), the bag being sequentially connected
Formula filter (6), circulating fan (8), and the heat being connected simultaneously with the coal pulverizer (3) and the circulating fan (8) respectively
Wind furnace (4), it is characterised in that：
Also include electrostatic water collection device (10), the electrostatic water collection device (10) is connected with the bag filter (6)；The electrostatic is received
Hydrophone (10) interior energy produces electrostatic field.
2. the system according to claim 1 for reclaiming moisture in mill coal drying tail gas, it is characterised in that：
The electrostatic water collection device (10) includes water collection device, control system, high voltage device；
The control system controls the intensity of the high voltage device generation electrostatic field.
3. the system according to claim 1 for reclaiming moisture in mill coal drying tail gas, it is characterised in that：
Air cooler (9) is provided between the electrostatic water collection device (10) and the bag filter (6).
4. the system according to claim 1 or 2 for reclaiming moisture in mill coal drying tail gas, it is characterised in that：
Also include water treatment system (12), the water treatment system (12) is connected with the electrostatic water collection device (10).
5. the system according to claim 4 for reclaiming moisture in mill coal drying tail gas, it is characterised in that：
The electrostatic water collection device (10) has offgas outlet and/or liquid outlet；
Air-introduced machine (11) is provided with the offgas outlet, the air-introduced machine (11) discharges tail gas；
The water of the liquid outlet outflow is recycled into the water treatment system (12).
6. the system according to claim 1 for reclaiming moisture in mill coal drying tail gas, it is characterised in that：
Gravimetric Coal Feeders (2) are provided between the raw material coal bunker (1) and the coal pulverizer (3)；
The Gravimetric Coal Feeders (2) can be quantified to coal.
7. the system according to claim 1 for reclaiming moisture in mill coal drying tail gas, it is characterised in that：
Bag filter (6) place is provided with conveying worm (7)；
Drying fine coal in the bag filter (6) delivers to fine coal pressurization and induction system through the conveying worm (7).
8. the system according to claim 1 for reclaiming moisture in mill coal drying tail gas, it is characterised in that：
The hot-blast stove (4) has air intake and/or fuel gas entrance；
Air enters the hot-blast stove (4) through the air intake on the hot-blast stove (4)；
Fuel gas enters the hot-blast stove (4) through the fuel gas entrance on the hot-blast stove (4).
9. the system according to claim 8 for reclaiming moisture in mill coal drying tail gas, it is characterised in that：
Air blower (5) is provided with the air intake of the hot-blast stove (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621199369.0U CN206382120U (en) | 2016-11-07 | 2016-11-07 | A kind of system for reclaiming moisture in mill coal drying tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621199369.0U CN206382120U (en) | 2016-11-07 | 2016-11-07 | A kind of system for reclaiming moisture in mill coal drying tail gas |
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| Publication Number | Publication Date |
|---|---|
| CN206382120U true CN206382120U (en) | 2017-08-08 |
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ID=59485999
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|---|---|---|---|
| CN201621199369.0U Active CN206382120U (en) | 2016-11-07 | 2016-11-07 | A kind of system for reclaiming moisture in mill coal drying tail gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106391309A (en) * | 2016-11-07 | 2017-02-15 | 航天长征化学工程股份有限公司 | System and method for recovering moisture in coal grinding drying tail gas |
-
2016
- 2016-11-07 CN CN201621199369.0U patent/CN206382120U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106391309A (en) * | 2016-11-07 | 2017-02-15 | 航天长征化学工程股份有限公司 | System and method for recovering moisture in coal grinding drying tail gas |
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