CN209596821U - Dry and wet joint inhibits dust and sulfur dioxide system in ilmenite concentrate drying flue gas - Google Patents
Dry and wet joint inhibits dust and sulfur dioxide system in ilmenite concentrate drying flue gas Download PDFInfo
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- CN209596821U CN209596821U CN201822002878.5U CN201822002878U CN209596821U CN 209596821 U CN209596821 U CN 209596821U CN 201822002878 U CN201822002878 U CN 201822002878U CN 209596821 U CN209596821 U CN 209596821U
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Abstract
Combine the utility model relates to a kind of dry and wet and inhibits dust and sulfur dioxide system in ilmenite concentrate drying flue gas, including flue gas washing system, pan gas washing system；Flue gas washing system includes cyclone dust collectors (2), smoke washer (3) and flue gas multiple baffle demister (4), and cyclone dust collectors (2) import is connected to flue；Pan gas washing system includes pan gas washer (7), pan gas multiple baffle demister (8) and pan gas blower (9), is connected to inside (7) import of pan gas washer and drying machine (1)；Smoke washer (3) and pan gas washer (7) are obliquely installed, and spray port face import.Flue gas is passed through into cyclone dust collectors (2) pre- dedusting, it is washed again through smoke washer (3), pan gas directly passes through pan gas washer (7) washing, water mist is inversely contacted with flue gas, make dust and the water mist collision in gas and traps, gas temperature reduces simultaneously, so that sulfur dioxide is absorbed, to complete cooling, desulfurizing dust removal process.
Description
Technical field
Combine the utility model relates to a kind of dry and wet and inhibit dust and sulfur dioxide system in ilmenite concentrate drying flue gas, belongs to
Tails dedusting sulphur removal processing technology field.
Background technique
The vanadium titano-magnetite of China Panzhihua Region is resourceful, is the main ilmenite concentrate production area in China.Ilmenite concentrate
Its water content need to be reduced to H from 10% or so in front of sales2O≤0.5%, therefore it need to be dried.Drying is mainly adopted
It is blown into rotary dryer with by coal hot-air, connects high-temperature flue gas directly or indirectly with ilmenite concentrate using the structure of rotary dryer
It touches and completes drying operation.Ilmenite concentrate flue-gas temperature after rotary dryer indirect drying is at 90~110 DEG C or so, in flue gas
Contain a small amount of coal ash dust and sulfur dioxide.And ilmenite concentrate can generate larger amount of dust shape in rotary dryer rotary course
At pan gas, and because ilmenite concentrate is understood under high temperature drying with a small amount of sulfur dioxide contained in released mineral, therefore in drying course
In can generate the independent tail gas of two parts.Due to containing a large amount of dust and sulfur dioxide, so that this partial tail gas can not be straight
Run in and puts.And in pulverized coal friring and titanium ore drying course, a large amount of dust and sulfur dioxide can be generated, for dust-laden exhaust gas current one
As processing is dusted using cloth-sack-type dust removal device or cyclone dust collector；For sulfur dioxide mostly use dry method, semidry method,
Wet process carries out desulfurization process.But the above technology is substantially individually to be handled particulate matter in flue gas and sulfur dioxide, not only
Invest larger, and operating cost is higher.
Utility model content
Technical problem to be solved in the utility model is to overcome the shortage of prior art, and providing one kind can classification processing flue gas
And pan gas, low-cost dry and wet joint inhibit dust and sulfur dioxide system in ilmenite concentrate drying flue gas.
The technical scheme adopted by the utility model to solve the technical problem is as follows: dry and wet joint inhibits ilmenite concentrate to dry flue gas
Middle dust and sulfur dioxide system, including flue gas washing system, pan gas washing system and slurry pond；
Flue gas washing system includes that cyclone dust collectors, smoke washer, flue gas multiple baffle demister and exhaust fan, whirlwind remove
Dirt device, smoke washer, flue gas multiple baffle demister and exhaust fan are sequentially connected, and the import of cyclone dust collectors and flue connect
Logical, the outlet of exhaust fan is connected to tail gas funnel；
Pan gas washing system includes pan gas washer, pan gas multiple baffle demister and pan gas blower, and pan gas washer, pan gas are multiple
Gear demister and pan gas blower are sequentially connected, and pan gas washer import is connected to dryer inner, pan gas blower and tail gas funnel
Connection；
Cyclone dust collectors, flue gas multiple baffle demister and the outlet of pan gas multiple baffle demister are connected to slurry pond；
Smoke washer and pan gas washer are obliquely installed, and import is higher than outlet, and smoke washer and pan gas washing
Device spray port face gas inlet.
Wherein, smoke washer described in above-mentioned apparatus and pan gas washer are that pipeline answers spray rinsing device, including tubulose
The shell of structure, shell both ends are provided with inlet, outlet, and enclosure interior axially spaced-apart is provided with several spray heads, and the spray head goes out
Mouth direction is axially consistent with shell, and spray outlet face gas inlet.
Further, spray head described in above-mentioned apparatus is bidirectional hollow taper low-voltage high-efficiency atomizer.
Wherein, smoke washer described in above-mentioned apparatus and pan gas washer and horizontal direction angle are 15~30 °.
Further, smoke washer and pan gas washer and horizontal direction angle are 23 ° in above-mentioned apparatus.
Wherein, it is arranged at intervals in flue gas multiple baffle demister described in above-mentioned apparatus and pan gas multiple baffle demister several same
The heart justifies baffle, and the spacing between adjacent screen is sequentially reduced from outside to inside.
Further, the height of baffle successively increases from outside to inside in above-mentioned apparatus.
The beneficial effects of the utility model are: hot fume is passed through the pre- dedusting of cyclone dust collectors by this system, it can be effectively clear
Except most dust, to effectively avoid blocking smoke washer pipeline.Flue gas after pre- dedusting is entered back into flue gas washing again
Device is washed, and the water mist sprayed through smoke washer is contacted with flue gas adverse current and efficiently mixed, and makes the mine dust and water in flue gas
Mist is collided and is trapped, while exhaust temperature reduces, and a large amount of water vapours are condensed into water after being lower than dew point on water mist, makes tail gas
In sulfur dioxide be absorbed, to complete flue gas cool-down desulfurization and dedusting process；Because of ilmenite concentrate meeting in drying machine rotary course
It generates larger amount of dust and forms pan gas, and because ilmenite concentrate can be with a small amount of dioxy contained in released mineral under high temperature drying
Change sulphur, be then directly pumped into pan gas washer by blower and washed, completes pan gas cooling, desulfurizing dust removal process.At this classification
The technology of dust and sulfur dioxide in reason tail gas can substantially reduce vent gas treatment cost.
Detailed description of the invention
Fig. 1 is the utility model flow diagram；
Fig. 2 is the structural schematic diagram of the utility model flue gas multiple baffle demister and pan gas multiple baffle demister；
Fig. 3 is the complete section structural schematic diagram of the utility model Fig. 2；
Fig. 4 is A-A diagrammatic cross-section in the utility model Fig. 2；
Fig. 5 is the structural schematic diagram of the utility model smoke washer and pan gas washer.
In the figure, it is marked as 1 is drying machine, 2 be cyclone dust collectors, and 3 be smoke washer, and 4 be flue gas multiple baffle demister, 5
It is exhaust fan, 6 be slurry pond, and 7 be pan gas washer, and 8 be pan gas multiple baffle demister, and 9 be pan gas blower, and 10 be shell, 11
It is spray head, 12 be baffle.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
As shown in Figures 1 to 5, the dry and wet joint of the utility model inhibits dust and sulfur dioxide in ilmenite concentrate drying flue gas
System, including flue gas washing system, pan gas washing system and slurry pond 6；
Flue gas washing system includes cyclone dust collectors 2, smoke washer 3, flue gas multiple baffle demister 4 and exhaust fan 5, rotation
Wind deduster 2, smoke washer 3, flue gas multiple baffle demister 4 and exhaust fan 5 are sequentially connected, the import of cyclone dust collectors 2 with
Flue connection, the outlet of exhaust fan 5 is connected to tail gas funnel；
Pan gas washing system includes pan gas washer 7, pan gas multiple baffle demister 8 and pan gas blower 9, pan gas washer 7, pot
Gas multiple baffle demister 8 and pan gas blower 9 are sequentially connected, and are connected to inside 7 import of pan gas washer and drying machine 1, pan gas blower 9 with
Tail gas funnel connection；
Cyclone dust collectors 2, flue gas multiple baffle demister 4 and the outlet of pan gas multiple baffle demister 8 are connected to slurry pond 6；
Smoke washer 3 and pan gas washer 7 are obliquely installed, and import is higher than outlet, and smoke washer 3 and pan gas are washed
Wash 7 spray port face gas inlet of device.It will be appreciated to those of skill in the art that the exhaust gas that drying machine 1 comes out mainly includes
The pan gas formed in flue gas and drying machine 1, and a large amount of dust, sulfur dioxide are mainly contained in flue gas, and pan gas then contains on a small quantity
Sulfur dioxide, since the ingredient of two kinds of exhaust gas is different, therefore this system reselection classification processing.To avoid dust from blocking spray tube
Cyclone dust collectors 2 are arranged preferably on the import leading portion pipeline of smoke washer 3, are dusted processing to flue gas for road, this system.
And the flue gas and pan gas that come out through drying machine 1 are introduced flue gas washing system and pan gas washing system by this system respectively, by flue gas
Pipeline is directly connect with 2 import of cyclone dust collectors, under the action of exhaust fan 5, flue gas after the pre- dedusting of cyclone dust collectors 2 again
It is washed into smoke washer 3, the water mist that smoke washer 3 sprays is contacted with flue gas adverse current and efficiently mixed, and makes flue gas
In mine dust and water mist collide and trapped, while exhaust temperature reduces, and a large amount of water vapours are lower than after dew point to coagulate on water mist
Become water, be absorbed the sulfur dioxide in tail gas, enters flue gas multiple baffle demister 4 afterwards and carry out gas-liquid separation, finally empty.And
The larger amount of dust that ilmenite concentrate can generate in 1 rotary course of drying machine forms pan gas, and because ilmenite concentrate is under high temperature drying
Can be with a small amount of sulfur dioxide contained in released mineral, since the pan gas amount of this part is less, and pressure is lower, therefore needs logical
It crosses the directly suction pan gas washer 7 of pan gas blower 9 to be washed, enter back into after the progress gas-liquid separation of pan gas multiple baffle demister 8 again
Emptying, to complete flue gas and pan gas cooling, desulfurizing dust removal process.This system further preferably washes smoke washer 3 and pan gas simultaneously
It washs device 7 to be obliquely installed, and import is higher than outlet, that is to say that import is located at upper end, so that flue gas or pan gas enter from upper end
Guarantee that flue gas and pan gas come into full contact with washing water, it is unobstructed will to be effectively ensured water flow, avoids hydrops and blocking.This system is also
Cyclone dust collectors 2, flue gas multiple baffle demister 4 and 8 lower end of pan gas multiple baffle demister are exported and connect with slurry pond 6, slurry pond 6 is clear
Overflow water is recycled again as washing water after clear, saves the dosage of washing water, reduces cost.Since flue gas can successively pass through
Cyclone separator, smoke washer 3 and flue gas multiple baffle demister 4, the pressure drop that will cause flue gas is larger, so that finally multiple from flue gas
It is low to keep off the flue gas pressures that the outlet of demister 4 comes out, so that gas circulation is unsmooth in whole device, equipment is easily caused to build the pressure.Therefore this
System preferably adds exhaust fan 5 in the exit of flue gas multiple baffle demister 4, guarantees that flow of flue gas is logical in flue gas washing system
Freely, treatment effeciency is improved.
Preferably, smoke washer 3 described in above-mentioned apparatus and pan gas washer 7 are that pipeline answers spray rinsing device, including
The shell 10 of tubular structure, 10 both ends of shell are provided with inlet, outlet, and 10 inside of shell is axial to be arranged at intervals with several spray heads
11, the outlet of spray head 11 direction is axial consistent with shell 10, and spray head 11 exports face gas inlet.Those skilled in the art
, it is understood that the preferred smoke washer 3 of this system and pan gas washer 7 are that pipeline answers spray rinsing device, the pipeline is multiple
Spray rinsing device mainly includes tubular shell 10 and spray head 11, and spray head 11 is provided with multiple, and each spray along 10 axially spaced-apart of shell
The equal face gas inlet of first 11 water outlet so that washing water can be larger with flue gas or pan gas contact surface, and is sufficiently mixed.
It is obliquely installed that can will to be effectively ensured water flow unobstructed simultaneously, avoids hydrops and blocking.
Preferably, spray head 11 described in above-mentioned apparatus is bidirectional hollow taper low-voltage high-efficiency atomizer 11.This field skill
Art personnel are, it is understood that this system is the contact surface for further increasing the washing water and flue gas or pan gas that spray from spray head 11
Product, therefore the further preferred spray head 11 of this system is bidirectional hollow taper low-voltage high-efficiency atomizer 11.
Preferably, smoke washer 3 described in above-mentioned apparatus and pan gas washer 7 and horizontal direction angle are 15~30 °.
It will be appreciated to those of skill in the art that this system is the tilt angle of preferred smoke washer 3 and pan gas washer 7,
So that smoke washer 3 and pan gas washer 7 and horizontal direction angle are 15~30 °, this structure setting can guarantee that water flow exists
It is unobstructed in shell 10, avoid hydrops and blocking outlet, while extend flue gas and pan gas can with washing water contact area and connect
Contact application adds, to improve absorption efficiency.
Preferably, smoke washer 3 and pan gas washer 7 and horizontal direction angle are 23 ° in above-mentioned apparatus.This field skill
Art personnel are, it is understood that the further preferred smoke washer 3 of this system and pan gas washer 7 are with horizontal direction angle
23 ° so that washing water can be flowed in shell 10 it is most unobstructed, while not will cause ponding and blocking outlet, extend equipment use
Service life.
Preferably, if being arranged at intervals in flue gas multiple baffle demister described in above-mentioned apparatus 4 and pan gas multiple baffle demister 8
Dry concentric circles baffle 12, the spacing between adjacent screen 12 are sequentially reduced from outside to inside.Skilled artisans appreciate that
It is that flue gas multiple baffle demister 4 and pan gas multiple baffle demister 8 are multiple baffle demister.And it is taper that multiple baffle demister, which includes lower part,
The cylinder of structure, shape arranged for interval and is located at the top of pyramidal structure in cylinder to baffle 12 in a ring, and multiple baffle demister
Import enters from lower tangential, and 12 section of baffle is 3/4 arc-shaped, and the import of notch face multiple baffle demister.Foam removal is kept off again
Device upper end is provided with gas outlet, and the lower end of lower taper structure is provided with liquid outlet.In actual work, due to being kept off again into flue gas
Gas in demister 4 and pan gas multiple baffle demister 8 is tangentially flowed into from its underpart shell, and gas is along inner walls and baffle 12
Side wall corkscrew motion, realize gas-liquid separation so that into multiple baffle demister tail gas and liquid foam under the action of the centrifugal force to same
The baffle 12 of heart circle arrangement and wall effect, can play the role of " cleaning ", avoid multiple baffle demister and are blocked, and realize high
Imitate foam removal.Spaced baffle 12 can will enter the intracorporal tail gas of shell simultaneously and liquid foam is separated, and increase its pressure loss,
So that the speed of gas greatly reduces.Simultaneously because its pressure loss at center is bigger, speed is slower, can make
The Time Inconsistency in pyramidal structure inner wall is fallen at gas, effectively to the intracorporal gas partitions of shell are entered, so that liquid and liquid
Foam falls branch and falls on pyramidal structure inner wall, avoids generating foam again the separation, it can be achieved that liquid and liquid foam.Simultaneously originally
Gap between the further preferred baffle 12 of system is by being sequentially reduced within outer, so that most of gas enters keeps off foam removal again
In the middle part of device, the pressure of gas is substantially reduced, so that final foam removal effect is more preferable, and tail gas is then from multiple baffle demister upper end outlet
Discharge.
Preferably, the height of baffle 12 successively increases from outside to inside in above-mentioned apparatus.Skilled artisans appreciate that
, this system is that the height of further preferred baffle 12 successively increases from outside to inside, the area in channel is increased, to have
Effect avoids channel jam, improves the effect of foam removal.
Claims (7)
1. dry and wet joint inhibits dust and sulfur dioxide system in ilmenite concentrate drying flue gas, it is characterised in that: including flue gas washing
System, pan gas washing system and slurry pond (6)；
Flue gas washing system includes cyclone dust collectors (2), smoke washer (3), flue gas multiple baffle demister (4) and exhaust fan
(5), cyclone dust collectors (2), smoke washer (3), flue gas multiple baffle demister (4) and exhaust fan (5) are sequentially connected, and whirlwind removes
The import of dirt device (2) is connected to flue, and the outlet of exhaust fan (5) is connected to tail gas funnel；
Pan gas washing system includes pan gas washer (7), pan gas multiple baffle demister (8) and pan gas blower (9), pan gas washer
(7), pan gas multiple baffle demister (8) and pan gas blower (9) are sequentially connected, and are connected inside (7) import of pan gas washer and drying machine (1)
Logical, pan gas blower (9) is connected to tail gas funnel；
Cyclone dust collectors (2), flue gas multiple baffle demister (4) and the outlet of pan gas multiple baffle demister (8) lower end connect with slurry pond (6)
It is logical；
Smoke washer (3) and pan gas washer (7) are obliquely installed, and import is higher than outlet, and smoke washer (3) and pan gas
Washer (7) spray port face gas inlet.
2. dry and wet joint according to claim 1 inhibits dust and sulfur dioxide system in ilmenite concentrate drying flue gas, special
Sign is: the smoke washer (3) and pan gas washer (7) are that pipeline answers spray rinsing device, the shell including tubular structure
(10), shell (10) both ends are provided with inlet, outlet, and shell (10) is internal to be axially arranged at intervals with several spray heads (11), described
Spray head (11) outlet direction is axial consistent with shell (10), and spray head (11) exports face gas inlet.
3. dry and wet joint according to claim 2 inhibits dust and sulfur dioxide system in ilmenite concentrate drying flue gas, special
Sign is: the spray head (11) is bidirectional hollow taper low-voltage high-efficiency atomizer (11).
Inhibit dust and two in ilmenite concentrate drying flue gas 4. combining according to claim 1 to dry and wet described in 3 any claims
Sulfur oxide system, it is characterised in that: the smoke washer (3) and pan gas washer (7) and horizontal direction angle be 15~
30°。
5. dry and wet joint according to claim 4 inhibits dust and sulfur dioxide system in ilmenite concentrate drying flue gas, special
Sign is: smoke washer (3) and pan gas washer (7) and horizontal direction angle are 23 °.
6. dry and wet joint according to claim 1 inhibits dust and sulfur dioxide system in ilmenite concentrate drying flue gas, special
Sign is: being arranged at intervals with several concentric circles baffles in the flue gas multiple baffle demister (4) and pan gas multiple baffle demister (8)
(12), and the spacing between adjacent screen (12) is sequentially reduced from outside to inside.
7. dry and wet joint according to claim 6 inhibits dust and sulfur dioxide system in ilmenite concentrate drying flue gas, special
Sign is: the height of baffle (12) successively increases from outside to inside.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822002878.5U CN209596821U (en) | 2018-11-30 | 2018-11-30 | Dry and wet joint inhibits dust and sulfur dioxide system in ilmenite concentrate drying flue gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822002878.5U CN209596821U (en) | 2018-11-30 | 2018-11-30 | Dry and wet joint inhibits dust and sulfur dioxide system in ilmenite concentrate drying flue gas |
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| CN209596821U true CN209596821U (en) | 2019-11-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109453596A (en) * | 2018-11-30 | 2019-03-12 | 四川安宁铁钛股份有限公司 | Dry and wet joint inhibits dust and sulfur dioxide system in ilmenite concentrate drying flue gas |
-
2018
- 2018-11-30 CN CN201822002878.5U patent/CN209596821U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109453596A (en) * | 2018-11-30 | 2019-03-12 | 四川安宁铁钛股份有限公司 | Dry and wet joint inhibits dust and sulfur dioxide system in ilmenite concentrate drying flue gas |
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