CN106955552A - Metallurgical rotary drum dryer main flue gas dedusting electric-bag complex dust collector - Google Patents
Metallurgical rotary drum dryer main flue gas dedusting electric-bag complex dust collector Download PDFInfo
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- CN106955552A CN106955552A CN201710206851.5A CN201710206851A CN106955552A CN 106955552 A CN106955552 A CN 106955552A CN 201710206851 A CN201710206851 A CN 201710206851A CN 106955552 A CN106955552 A CN 106955552A
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- flue gas
- dust
- rotary drum
- drum dryer
- cleaner
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a kind of metallurgical rotary drum dryer main flue gas dedusting electric-bag complex dust collector, including electric cleaner and sack cleaner two parts, wherein electric cleaner has air horn and airflow-distribution board, and dust is collected using electric field, and its bottom is provided with ash bucket.Sack cleaner includes upper box, middle casing and ash bucket.Dividing plate is set between electric cleaner and sack cleaner, septum plate length is longer than middle casing, and each bag cage bottom of sack cleaner sets segmentation deflector, uniform beneficial to air flow method.The present invention can solve the problem that the influence to dust collector efficiency such as metallurgical class rotary drum dryer main flue gas chemical composition, temperature, humidity.Dusty gas is introduced into electric cleaner, serve the effect that pre- dedusting is carried out to the gas for entering sack cleaner, most of dust is captured in the electric field, and great changes will take place for dust concentration, dust fineness, dust dispersity into sack cleaner part etc., material bag-type dust efficiency is improved, while being conducive to extending the life-span of filter bag.
Description
Technical field
The present invention relates to a kind of metallurgical cleaner, and in particular to and a kind of metallurgical rotary drum dryer main flue gas dedusting electricity consumption-
Bag complex dust collector.
Background technology
The material that rotary drum dryer is used to dry certain humidity, granularity in ore dressing, field of metallurgy, its cylinder is one and water
Horizontal line is slightly into inclined rotor.Material is added from higher end, and flue gas enters by low side, with material into counter current contacting, with
The rotation material for cylinder is run to one end bottom of compared with by Action of Gravity Field.During wet stock is moved forward in cylinder, directly
Or indirectly obtained flue gas to heat, enable wet stock drying, then sent in discharge end through belt feeder or conveying worm
Go out..Flue gas is after drier, it is necessary to wherein institute's band material will be trapped by cleaner.Present metallurgical cylinder dries
The main flue gas cleaner of dry machine typically uses common electric cleaner, and its dust-collecting efficiency is influenceed by dust performance and flue gas condition
It is larger（Such as resistivity）.And the dust-collecting efficiency of electric cleaner also with dust collecting pole plate area exponentially curved line relation.In order to reach
Low emission concentration, it is necessary to set up the four, the 5th electric fields, increases equipment investment.
Though and sack cleaner is not influenceed by dust resistivity properties, because the main flue gas of rotary drum dryer has temperature
The characteristics such as height, high humidity are spent, therefore use the problems such as sack cleaner processing is easily caused condensation, paste bag, it is impossible to are directly applied.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention provides a kind of metallurgical drum dry owner
Flue gas ash removal electricity consumption-bag complex dust collector, a dedusting electric field is set in front portion, is played electric cleaner and is made in first order dedusting
With, the advantage of 80%-90% dust can be collected, most of dust in flue dust is collected, and second level cloth is designed behind deduster
Bag dedusting, makes the low flue gas of dust content by filter bag, can so significantly reduce resistance of the filter bag, extends the injection cycle, shortens
Pulse width, reduces jetting pressure, so as to greatly prolong the life-span of filter bag.
Technical scheme：In order to solve the above technical problems, the present invention provide metallurgical rotary drum dryer main flue gas dedusting electricity consumption-
Bag complex dust collector, including electric cleaner and sack cleaner in casing, the front end of the electric cleaner have into
Air horn mouthful and airflow-distribution board, set by vertical demarcation strip, the cloth bag is removed between the electric cleaner and sack cleaner
Dirt utensil has upper box and middle casing, and the tail end of upper box has gas outlet, and the bottom of middle casing is provided with segmentation deflector.
Specifically, the bottom of the casing is provided with the ash bucket corresponding with electric cleaner and sack cleaner.
Specifically, the airflow-distribution board includes the plate electrode in starting stave and the second riser, the electric cleaner
Also vertical arrangement, can make air-flow along electric field Latitudinal section even into electric field.
Specifically, the area of the demarcation strip is more than the section of middle casing, and baffling is formed between demarcation strip and bottom half
Passage.
Specifically, middle casing lower openings are not closed, and middle casing lower segment arranges deflector, and deflector length gradually increases
Long, beneficial to entering, cloth bag air-flow is uniform.
Present invention simultaneously provides the dedusting side of above-mentioned metallurgical rotary drum dryer main flue gas dedusting electricity consumption-bag complex dust collector
Method, for handling metallurgical class rotary drum dryer main flue gas, filtering dust in flue gas is come out, and electric cleaner is carried out to dusty gas
Primary dust removing, sack cleaner carries out two-stage dust removal, the most of dust of primary dust removing trapping, two-stage dust removal processing to dusty gas
Remaining dust.
Beneficial effect：The present invention is by combining electric cleaner and sack cleaner.It can solve the problem that metallurgical class rotary drum dryer
The influence to dust collector efficiency such as main flue gas chemical composition, temperature, humidity.Dusty gas is introduced into electric cleaner, serves pair
Gas into sack cleaner carries out the effect of pre- dedusting, and most of dust is captured in the electric field, and is removed into cloth bag
Great changes will take place for dust concentration, dust fineness, dust dispersity of dirt device part etc., improves material bag-type dust efficiency, simultaneously
Be conducive to extending the life-span of filter bag.
Except it is above-described present invention solves the technical problem that, constitute technical scheme technical characteristic and by these technologies
Outside the advantage that the technical characteristic of scheme is brought., below will knot to make the object, technical solutions and advantages of the present invention clearer
The accompanying drawing in the embodiment of the present invention is closed, to other skills included in the other technologies problem of the invention that can be solved, technical scheme
The advantage that art feature and these technical characteristics are brought does apparent, complete description, it is clear that described embodiment is this
Invent a part of embodiment, rather than whole embodiments.The embodiment of the present invention generally here described and illustrated in accompanying drawing
Component can arrange and design with a variety of configurations.Therefore, implementation of the invention below to providing in the accompanying drawings
The detailed description of example is not intended to limit the scope of claimed invention, but is merely representative of the selected implementation of the present invention
Example.Based on the embodiment in the present invention, the institute that those of ordinary skill in the art are obtained without creative work on its basis
There is other embodiment, belong to the scope of protection of the invention.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention one；
In figure：1. electric cleaner airflow-distribution board, 2. electric cleaner casings, 3. ash buckets, 4. demarcation strips, 5. segmentation deflectors, 6.
Casing in sack cleaner, 7. sack cleaner upper boxes.
Embodiment
Embodiment one：
The metallurgical rotary drum dryer main flue gas dedusting electricity consumption-bag complex dust collector of the present embodiment as shown in figure 1, by electric cleaner and
Sack cleaner is composed in series, between the two provided with demarcation strip 4, and each deduster bottom is respectively disposed with ash bucket 3.
Electric cleaner airflow-distribution board 1 is arranged at air inlet, and electric field is internally formed in electric cleaner casing 2.Cloth bag is removed
Dirt device is made up of casing in sack cleaner 6 and sack cleaner upper box 7, and is provided with gas outlet at top, in bag-type dust
Segmentation deflector 5 is provided with device the bottom interval of casing 6.
In use, rotary drum dryer main flue gas is introduced from deduster air horn, through two layers of airflow uniform distribution plate, make air-flow
Along electric field Latitudinal section even into electric field, dust there are about 80%-90% and be collected by electric field in flue gas, fall into the first ash bucket,
Flue gas bottom horizontal flow sheet is folded to electric field bottom, then moves from bottom to top, and by dividing plate, air-flow is under segmentation deflector effect,
Even entrance sack cleaner.Ash-laden gas leads to filter bag exterior surface, and dust is blocked on the outside of filter bag, and falls into second,
Three ash buckets, clean gas flows out from the inner chamber of filter bag, into top air-purifying chamber, and respectively enters top air valve, then the row of remittance
Airduct, flows through outlet loudspeaker discharge.
Embodiment two
The t wet basis of lateritic nickel ore 1,000,000 is handled, using long 45m, internal diameter 5m rotary drum dryer, fuel uses 1450Kcal/Nm3
Coal gas, the Nm of main flue gas amount 120,0003/ h, wherein containing 4% C02, 54% N2, 32% H2O, 9% O2, 120 DEG C of flue-gas temperature
Left and right.
Flue gas water content is up to 32%, and the m of air quantity 18.7 ten thousand is handled from electricity-bag composite dedusting3/ h, anti-condensation.
Most of dust and flue gas water content is reduced to less than 5%, in one-level electric precipitation processing flue gas while by flue-gas temperature
Reduction is less than 80 DEG C, it is ensured that do not condense.
Dust-laden is few after processing, humidity is small and low temperature flue gas enters sack cleaner through central dividing plate bottom, now cigarette
80 DEG C or so of temperature degree, using common cloth bag, does not on the one hand influence the efficiency of bag-type dust, equipment investment is reduced in addition.
From said process, one-level electric precipitation has cool-down dehumidification effect concurrently, dedusting before secondary bag-type dust is entered,
Temperature humidity is effectively suppressed, and is able to substitute high temperature resistant bag-type dust commonly used in the art using common sack cleaner
Device.
The filtrate of common normal temperature deduster is applied to temperature and is less than 130 DEG C.And the filtrate of high-temperature-resistant cloth bag dust collector is suitable to
Temperature is at 130 DEG C ~ 200 DEG C, and equipment investment is big.
In the description of the invention, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or one
Connect body；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirect by intermediary
It is connected, can is the connection of two element internals.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it further need not be defined and explained in subsequent accompanying drawing.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, or should
Orientation or position relationship that invention product is usually put when using, are for only for ease of the description present invention and simplify description, without
It is that instruction or the signified device of hint or element must have specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and it can not manage
Solve to indicate or imply relative importance.
The preferred embodiment of the present invention is the foregoing is only, is not intended to limit the invention, for this area
For technical staff, the present invention can have various modifications and variations, in the range of the principle and technological thought of the present invention, to this
A little embodiments carry out a variety of changes, modification, equivalent and improvement etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of metallurgical rotary drum dryer main flue gas dedusting electricity consumption-bag complex dust collector, including the electric precipitation in casing
Device and sack cleaner, it is characterised in that：The front end of the electric cleaner has air horn and airflow-distribution board, the electricity
Set between deduster and sack cleaner by vertical demarcation strip, the sack cleaner has upper box and middle casing, top box
The tail end of body has gas outlet, and the bottom of middle casing is provided with segmentation deflector.
2. metallurgical rotary drum dryer main flue gas dedusting electricity consumption-bag complex dust collector according to claim 1, its feature exists
In：The bottom of the casing is provided with and electric cleaner and the one-to-one ash bucket of sack cleaner.
3. metallurgical rotary drum dryer main flue gas dedusting electricity consumption-bag complex dust collector according to claim 1, its feature exists
In：The plate electrode that the airflow-distribution board is included in starting stave and the second riser, the electric cleaner is also arranged vertically.
4. metallurgical rotary drum dryer main flue gas dedusting electricity consumption-bag complex dust collector according to claim 1, its feature exists
In：The area of the demarcation strip is more than the section of middle casing, and baffling passage is formed between demarcation strip and bottom half.
5. metallurgical rotary drum dryer main flue gas dedusting electricity consumption-bag complex dust collector according to claim 1, its feature exists
In：Middle casing lower openings are not closed, and middle casing lower segment arranges deflector, and deflector length gradually increases.
6. the dust collection method of metallurgical rotary drum dryer main flue gas dedusting electricity consumption-bag complex dust collector according to claim 1,
It is characterized in that：For handling metallurgical class rotary drum dryer main flue gas, filtering dust in flue gas is come out, electric cleaner is to dust-laden
Gas carries out primary dust removing and cool-down dehumidification, and sack cleaner carries out two-stage dust removal to gas after processing.
7. the dust collection method of metallurgical rotary drum dryer main flue gas dedusting electricity consumption-bag complex dust collector according to claim 6,
It is characterized in that：Most of dust and flue gas water content is reduced to less than 5%, in one-level electric precipitation processing flue gas while by flue gas
Temperature drops to less than 80 DEG C, and dust-laden is few after being handled through one-level electric precipitation, humidity is small and low temperature flue gas enters through central dividing plate bottom
Enter sack cleaner.
8. the dust collection method of metallurgical rotary drum dryer main flue gas dedusting electricity consumption-bag complex dust collector according to claim 6,
It is characterized in that：Rotary drum dryer main flue gas is introduced from deduster air horn, through two layers of airflow uniform distribution plate, makes air-flow along electricity
Latitudinal section is even into electric field, and dust there are about 80%-90% and be collected by electric field in flue gas, fall into the first ash bucket, flue gas
Bottom horizontal flow sheet is folded to electric field bottom, then moves from bottom to top, and by dividing plate, air-flow uniformly enters under segmentation deflector effect
Enter sack cleaner；Ash-laden gas is by the filter bag outer surface of sack cleaner, and dust is blocked on the outside of filter bag, and falls into
Second, third ash bucket, clean gas flows out from the inner chamber of filter bag, into top air-purifying chamber, and respectively enters top air valve, then
Exhaust duct is imported, outlet loudspeaker discharge is flowed through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710206851.5A CN106955552A (en) | 2017-03-31 | 2017-03-31 | Metallurgical rotary drum dryer main flue gas dedusting electric-bag complex dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710206851.5A CN106955552A (en) | 2017-03-31 | 2017-03-31 | Metallurgical rotary drum dryer main flue gas dedusting electric-bag complex dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106955552A true CN106955552A (en) | 2017-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710206851.5A Pending CN106955552A (en) | 2017-03-31 | 2017-03-31 | Metallurgical rotary drum dryer main flue gas dedusting electric-bag complex dust collector |
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| CN (1) | CN106955552A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112619344A (en) * | 2020-12-19 | 2021-04-09 | 西安西热控制技术有限公司 | Efficient electric precipitation method for thermal power plant |
| CN112742132A (en) * | 2020-12-31 | 2021-05-04 | 成都易态科技有限公司 | Treatment system and treatment method for furnace gas of fuming furnace |
-
2017
- 2017-03-31 CN CN201710206851.5A patent/CN106955552A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112619344A (en) * | 2020-12-19 | 2021-04-09 | 西安西热控制技术有限公司 | Efficient electric precipitation method for thermal power plant |
| CN112742132A (en) * | 2020-12-31 | 2021-05-04 | 成都易态科技有限公司 | Treatment system and treatment method for furnace gas of fuming furnace |
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