CN105536419A - Special steam filtering dust collector for alpha type semi-hydrated gypsum production - Google Patents
Special steam filtering dust collector for alpha type semi-hydrated gypsum production Download PDFInfo
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- CN105536419A CN105536419A CN201610110264.1A CN201610110264A CN105536419A CN 105536419 A CN105536419 A CN 105536419A CN 201610110264 A CN201610110264 A CN 201610110264A CN 105536419 A CN105536419 A CN 105536419A
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- Prior art keywords
- dust
- steam
- inner cover
- heating
- hydrated gypsum
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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
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/4263—Means for active heating or cooling
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
A special steam filtering dust collector for alpha type semi-hydrated gypsum production comprises a cylindrical case, wherein an annular end cover is arranged at the top of the case, and a dust collecting hopper is arranged at the lower part of the case. The special steam filtering dust collector is characterized in that an inner cover is suspended in the case, a horizontal partition board is arranged at the upper part of the inner cover and divides an inner cover cavity into a pulse-jet dust cleaning chamber in the upper part and a bag dust collecting chamber in the lower part, a plurality of dust collecting filter bags are suspended in the bag dust collecting chamber, air holes directly facing the corresponding dust collecting filter bags are formed in the horizontal partition board, a top cover is arranged at the top of the inner cover, a clean air outlet is formed in the top cover, and a compressed air inlet pipe is formed outside the inner cover and communicated with the pulse-jet dust cleaning chamber; the lower part of the inner cover is open and is communicated with a pre-dust-collecting ring channel, a dust-containing steam inlet is formed in the upper part of the case, the case is covered with a heating and insulating layer, and a heating coiled pipe is further mounted in the dust collecting hopper. According to the special steam filtering dust collector, dust in the steam can be kept in an alpha type semi-hydrated gypsum state for drying and recycling, the product yield is greatly increased, the clean air emission is realized, and the special steam filtering dust collector is mainly applied to powder recovery in the alpha type semi-hydrated gypsum production.
Description
Technical field
The present invention relates to the purification dust collection device in raw material of industry production and processing, specifically a kind of alpha semi-hydrated gypsum is produced special steam and is filtered dust-precipitator.
Background technology
Bag filter is widely used a kind of powder dust collection device in industrial production, and it both can purification of exhaust gas, can collect powder again, improves product yield.But common bag filter is similar in autoclave method production alpha semi-hydrated gypsum system and can not be suitable for containing gathering dust of alpha semi-hydrated gypsum powder in steam, this is because the alpha semi-hydrated gypsum that common bag filter is collected in steam can because the internal-external temperature difference of dust-precipitator can produce condensed water, make αsemiwatergypsum fast restore become dihydrate gypsum, thus finished product use can not be collected.
Summary of the invention
Object of the present invention is exactly to solve the problem that common bag filter can not be applicable to alpha semi-hydrated gypsum collection, provides a kind of alpha semi-hydrated gypsum to produce special steam and filters dust-precipitator.
Concrete scheme of the present invention is: a kind of alpha semi-hydrated gypsum is produced special steam and filtered dust-precipitator, there is barrel-type casing, case top is provided with annular end cap, lower housing portion is provided with flue-dust retainer, powder outlet is provided with bottom flue-dust retainer, it is characterized in that: hang in housing and inner cover is housed, interior cover outer wall and annular end cap endoporus heal seal, and have spacing to form the circuit that gathers dust in advance with inner walls, inner cover top is provided with horizontal baffle, inner cover chamber is divided into the pulse dust cleaning room on top and the bag dust chamber of bottom, some dust collection filter bags are lifted with in bag dust chamber, horizontal baffle just has air vent to each dust collection filter bag, the top of inner cover is provided with top cover, top cover has pure qi (oxygen) outlet, compressed air inlet pipe is provided with in inner cover outside, be communicated with pulse dust cleaning room, inner cover bottom is uncoveredly to be communicated with the circuit that gathers dust in advance, and be provided with dust-laden steam inlet on the top of housing, housing shells is provided with heating and thermal insulation layer, keeps the temperature in heat-insulation layer consistent with temperature in housing, in flue-dust retainer, also heat(ing) coil is installed.
On compressed air inlet pipe, pulse valve is installed in the present invention.
The heating and thermal insulation layer of housing exterior walls described in the present invention is Steam Heating interlayer or installs around steam-heating pipe; Heat(ing) coil in flue-dust retainer is steam(-)coil, Steam Heating interlayer or steam-heating pipe, steam(-)coil are the air inlet sharing system vapour sources with dust-laden steam inlet, keep temperature consistent, and be provided with condensate drain outlet in the bottom of heating and thermal insulation layer or steam(-)coil.
The interlayer of Steam Heating described in the present invention or steam-heating pipe and steam(-)coil are for being arranged in parallel, and steam inlet is located on steam(-)coil and Steam Heating interlayer or steam-heating pipe respectively.
The steam inlet of dust-laden described in the present invention forms tangential admission with inner walls to arrange.
The present invention designs ingenious, structure is simple, have employed pulse compression air and timing deashing is carried out to filter bag, reliable operation, operational efficiency is high, particularly has additional heating and thermal insulation layer (pipe) in hull outside, is provided with heat(ing) coil and carries out drying to dust in flue-dust retainer, thus ensure that the dust collected in housing can be collected feeding warehouse for finished product with the form of alpha semi-hydrated gypsum dry powder, substantially increase the yield of system.
Accompanying drawing explanation
Fig. 1 is general structure schematic diagram of the present invention.
In figure: 1-compressed air inlet pipe, 2-pulse valve, 3-pure qi (oxygen) exports, 4-top cover, 5-pulse dust cleaning room, 6-horizontal baffle, 7-bag dust chamber, 8-dust-laden steam inlet, 9-dust collection filter bag, 10-inner cover, 11-heating and thermal insulation layer, 12-gather dust circuit in advance, 13-housing, 14-flue-dust retainer, 15-heat(ing) coil, 16-condensation-water drain, 17-powder outlet, 18-steam inlet, 19-annular end cap.
Detailed description of the invention
See Fig. 1, the present invention has barrel-type casing 13, housing 13 top is provided with annular end cap 19, housing 13 bottom is provided with flue-dust retainer 14, powder outlet 17 is provided with bottom flue-dust retainer 14, particularly: hang in housing 13 and inner cover 10 is housed, inner cover 10 outer wall and annular end cap 19 endoporus heal seal, and have spacing to form the circuit 12 that gathers dust in advance with housing 13 inwall, inner cover 10 top is provided with horizontal baffle 6, inner cover 10 chamber is divided into the pulse dust cleaning room 5 on top and the bag dust chamber 7 of bottom, some dust collection filter bags 9 are lifted with in bag dust chamber 7, horizontal baffle 6 just has air vent to each dust collection filter bag 9, the top of inner cover 10 is provided with top cover 4, top cover 4 has pure qi (oxygen) outlet 3, compressed air inlet pipe 1 is provided with in inner cover 10 outside, be communicated with pulse dust cleaning room 5, inner cover 10 bottom is uncoveredly to be communicated with the circuit 12 that gathers dust in advance, is provided with dust-laden steam inlet 8, is covered with heating and thermal insulation layer outside housing 13 on the top of housing 13, keeps the temperature in heating and thermal insulation layer consistent with temperature in housing 13, in flue-dust retainer 14, heat(ing) coil 15 is also installed.
Preferably on compressed air inlet pipe 1, pulse valve 2 is installed in the present embodiment.
In the present embodiment, the heating and thermal insulation layer 11 of preferred described housing 13 outer wall is Steam Heating interlayer or installs around steam-heating pipe, can also be other heating and thermal insulation layers such as electrothermal tube certainly; Heat(ing) coil 15 in flue-dust retainer 14 is steam(-)coil, Steam Heating interlayer or steam-heating pipe, steam(-)coil are the air inlet sharing system vapour sources with dust-laden steam inlet 8, keep temperature consistent, and be provided with condensate drain outlet 16 in the bottom of heating and thermal insulation layer 11.
In the present embodiment, preferred described Steam Heating interlayer 11 is with steam(-)coil 15 for being arranged in parallel, and heat(ing) coil 15 and Steam Heating interlayer 11 are equipped with steam inlet 18.
In the present embodiment, preferred described dust-laden steam inlet 8 forms tangential admission with housing 13 inwall to arrange.
Operation principle of the present invention is: see Fig. 1, the dried dust-containing water steam tail gas of vapour system is adopted to enter from dust-laden steam inlet 8 tangent line the circuit 12 that gathers dust in advance, air-flow helically moves downward, comparatively meal dirt during this in air-flow is at centrifugal force, under mutual collision effect, rely on gravity to drop in flue-dust retainer 14, which decrease the dust content into sock filtration, play the effect of gathering dust in advance.
Air-flow after gathering dust in advance, be distributed in outside indoor each dust collection filter bag 9 from bag dust chamber 7 bottom even, under circularly-supercharged compressor effect, air-flow penetrates dust collection filter bag 9 and discharges purified gas, dust is blocked on dust collection filter bag 9 outer surface, thus reaches the effect of udst separation steam.
Along with the continuity of working time, outside dust collection filter bag 9, the dust of attachment will get more and more, and resistance can constantly increase; For guarantee system is normally run, the attachment dust (i.e. deashing) on filter bag just need be removed.For strengthening ash-removal effect, adopting off-line, compressed air purge mode, namely from compressed air inlet pipe, passing through pulse valve 2, pulse press-in pressure air, makes the dust outside dust collection filter bag 9 fall to being collected.
For the situation not parching completely or condense avoiding material may occur at overheating steam drying process, spy in flue-dust retainer, arrange heat(ing) coil 15 and heating, temperature keeping layer 11 continues contact drying material, guarantees that dust-precipitator normally runs and product quality.The condensed water produced after steam heat-exchanging is discharged to condensation pond from the condensation-water drain 16 bottom flue-dust retainer 14, and the dust of collection is then discharged by powder outlet 17 bottom flue-dust retainer 14 and delivered to finished product warehouse.
Claims (5)
1. alpha semi-hydrated gypsum is produced special steam and is filtered dust-precipitator, there is barrel-type casing, case top is provided with annular end cap, lower housing portion is provided with flue-dust retainer, powder outlet is provided with bottom flue-dust retainer, it is characterized in that: hang in housing and inner cover is housed, interior cover outer wall and annular end cap inner hole welding of rapid cooling seal, and have spacing to form the circuit that gathers dust in advance with inner walls, inner cover top is provided with horizontal baffle, inner cover chamber is divided into the pulse dust cleaning room on top and the bag dust chamber of bottom, some dust collection filter bags are lifted with in bag dust chamber, horizontal baffle just has air vent to each dust collection filter bag, the top of inner cover is provided with top cover, top cover has pure qi (oxygen) outlet, compressed air inlet pipe is provided with in inner cover outside, be communicated with pulse dust cleaning room, inner cover bottom is uncoveredly to be communicated with the circuit that gathers dust in advance, and be provided with dust-laden steam inlet on the top of housing and be communicated with the circuit that gathers dust in advance, housing shells is provided with heating and thermal insulation layer, keeps the temperature in heat-insulation layer consistent with temperature in housing, in flue-dust retainer, also heat(ing) coil is installed.
2. alpha semi-hydrated gypsum according to claim 1 is produced special steam and is filtered dust-precipitator, it is characterized in that: on compressed air inlet pipe, be provided with pulse valve.
3. alpha semi-hydrated gypsum according to claim 1 is produced special steam and is filtered dust-precipitator, it is characterized in that: the heating and thermal insulation layer of described housing exterior walls is Steam Heating interlayer or installs around steam-heating pipe; Heat(ing) coil in flue-dust retainer is steam(-)coil, Steam Heating interlayer or steam-heating pipe, steam(-)coil are the air inlet sharing system vapour sources with dust-laden steam inlet, keep temperature consistent, and be provided with condensate drain outlet in the bottom of heating and thermal insulation layer or steam-heating pipe.
4. alpha semi-hydrated gypsum according to claim 3 is produced special steam and is filtered dust-precipitator, it is characterized in that: described Steam Heating interlayer or steam-heating pipe and steam(-)coil are for being arranged in parallel.
5. alpha semi-hydrated gypsum according to claim 1 is produced special steam and is filtered dust-precipitator, it is characterized in that: described dust-laden steam inlet forms tangential admission with inner walls to arrange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610110264.1A CN105536419B (en) | 2016-02-29 | 2016-02-29 | Alpha semi-hydrated gypsum production special steam filtering dust-precipitator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610110264.1A CN105536419B (en) | 2016-02-29 | 2016-02-29 | Alpha semi-hydrated gypsum production special steam filtering dust-precipitator |
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| Publication Number | Publication Date |
|---|---|
| CN105536419A true CN105536419A (en) | 2016-05-04 |
| CN105536419B CN105536419B (en) | 2017-07-04 |
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| CN201610110264.1A Active CN105536419B (en) | 2016-02-29 | 2016-02-29 | Alpha semi-hydrated gypsum production special steam filtering dust-precipitator |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101347698A (en) * | 2008-09-05 | 2009-01-21 | 自贡硬质合金有限责任公司 | Method for recycling tungsten oxide powder dust from flue gas of calcining ammonium paratungstate and recovering device |
| CN202516427U (en) * | 2012-04-13 | 2012-11-07 | 汝州市恒生科技发展有限公司 | Main bag filter for producing carbon black |
| CN104307265A (en) * | 2014-10-19 | 2015-01-28 | 耒阳市诚松有色金属再生有限公司 | Fume dust collection tank |
| CN205386388U (en) * | 2016-02-29 | 2016-07-20 | 湖北金炉节能股份有限公司 | Special steam filtration dust collector of alpha type plaster of paris production |
-
2016
- 2016-02-29 CN CN201610110264.1A patent/CN105536419B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101347698A (en) * | 2008-09-05 | 2009-01-21 | 自贡硬质合金有限责任公司 | Method for recycling tungsten oxide powder dust from flue gas of calcining ammonium paratungstate and recovering device |
| CN202516427U (en) * | 2012-04-13 | 2012-11-07 | 汝州市恒生科技发展有限公司 | Main bag filter for producing carbon black |
| CN104307265A (en) * | 2014-10-19 | 2015-01-28 | 耒阳市诚松有色金属再生有限公司 | Fume dust collection tank |
| CN205386388U (en) * | 2016-02-29 | 2016-07-20 | 湖北金炉节能股份有限公司 | Special steam filtration dust collector of alpha type plaster of paris production |
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| Publication number | Publication date |
|---|---|
| CN105536419B (en) | 2017-07-04 |
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