CN101972578A - Rotary kiln flue gas treating device capable of automatically controlling blowing rate of draught fan - Google Patents
Rotary kiln flue gas treating device capable of automatically controlling blowing rate of draught fan Download PDFInfo
- Publication number
- CN101972578A CN101972578A CN2010102781036A CN201010278103A CN101972578A CN 101972578 A CN101972578 A CN 101972578A CN 2010102781036 A CN2010102781036 A CN 2010102781036A CN 201010278103 A CN201010278103 A CN 201010278103A CN 101972578 A CN101972578 A CN 101972578A
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- CN
- China
- Prior art keywords
- rotary kiln
- flue gas
- acid mist
- cyclone dust
- connects
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 239000003546 flue gas Substances 0.000 title claims abstract description 21
- 238000007664 blowing Methods 0.000 title abstract 3
- 239000000428 dust Substances 0.000 claims abstract description 37
- 239000002253 acid Substances 0.000 claims abstract description 29
- 239000003595 mist Substances 0.000 claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 238000005201 scrubbing Methods 0.000 claims description 20
- 238000004062 sedimentation Methods 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 14
- 239000002351 wastewater Substances 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 4
- 230000003472 neutralizing effect Effects 0.000 claims description 3
- 239000008400 supply water Substances 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000001354 calcination Methods 0.000 abstract description 4
- 239000004408 titanium dioxide Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 6
- 238000005406 washing Methods 0.000 abstract 5
- 235000010215 titanium dioxide Nutrition 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000001038 titanium pigment Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Muffle Furnaces And Rotary Kilns (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a rotary kiln flue gas treating device capable of automatically controlling the blowing rate of a draught fan, which relates to flue gas treating equipment for a rotary kiln used in titanium dioxide production. A main structure is that: a primary cyclone dust collector is connected with the rotary kiln and a secondary cyclone dust collector; the secondary cyclone dust collector is connected with a Venturi dust collector; the Venturi duct collector is connected with an acid mist washing tower; the acid mist washing tower is connected with a chimney through an exhaust pipe; an induced draught fan is arranged on the exhaust pipe and provided with a frequency converter; a sprayer and a washing sprayer on the Venturi dust collector and the acid mist washing tower are connected with water supply pipes respectively; the water supply pipes are connected with a water supply pump of a cooling and settling pond; water ponds at the bottoms of the Venturi dust collector and the acid mist washing tower are connected with water return pipes; and the water return pipes are connected with the cooling and settling pond. The rotary kiln flue gas treating device capable of automatically controlling the blowing rate of the draught fan captures and cools about 600 DEG C high temperature flue gas and fine dust which are generated in a metatitanic acid calcining process by the rotary kiln, and finally realizes the clean emission standard of tail gas and the recycling of captured dry ash.
Description
Technical field
The present invention relates to the fume treatment auxiliary of used rotary kiln in the titanium white production equipment, particularly titanium white production.
Background technology
Calcining is one of three most critical operations of decision titanium dioxide quality, in the titanium white production calcining, needs to use rotary kiln.Rotary kiln flue gas dust collecting system automatic control technology is reasonable, stable for the air quantity excessively that keeps dedusting gas circuit and rotary kiln in the calcined by rotary kiln production process of titanium pigment, reduce the dust loss amount, improve the recovery rate of product, realize that finally the cleaning qualified discharge of tail gas has important effect.
Through retrieval, domestic do not see as yet rotary kiln titanium dioxide flue gas processing device adopt with this project control automatically the fan delivery technology type with the pertinent literature report.
Summary of the invention
The rotary kiln flue gas processing device that the purpose of this invention is to provide a kind of automatic control fan delivery, the present invention reaches high-temperature flue gas, fine dust about 600 ℃ by the temperature of using this device that rotary kiln is produced and captures cooling processing and the final cleaning qualified discharge of realizing tail gas, also can be recycled to the dry ash that traps in calcining metatitanic acid process.
The rotary kiln flue gas processing device of automatic control fan delivery of the present invention comprises one-level cyclone dust collectors 2-1, second cyclone dust extractor 2-2, venturi scrubber 3, acid mist scrubbing tower 5, cooling sedimentation basin 10, air-introduced machine 11; One-level cyclone dust collectors 2-1 air inlet connects rotary kiln 1 by pipeline, one-level cyclone dust collectors 2-1 gas outlet connects second cyclone dust extractor 2-2 air inlet, second cyclone dust extractor 2-2 gas outlet connects the air inlet of venturi scrubber 3, the gas outlet of venturi scrubber 3 connects the air inlet of acid mist scrubbing tower 5, the gas outlet of acid mist scrubbing tower 5 connects chimney 12 by blast pipe 7, air-introduced machine 11 is installed on blast pipe 7, on the air-introduced machine 11 frequency converter is installed; Spray thrower 4 is arranged in venturi scrubber 3, wash spray device 6 is arranged in acid mist scrubbing tower 5, spray thrower 4 is connected feed pipe 8 respectively with wash spray device 6, feed pipe 8 connects the supply-water pump of cooling sedimentation basin 10, venturi scrubber 3 is connected return pipe 9 with the pond of acid mist scrubbing tower 5 bottoms, and return pipe 9 connects cooling sedimentation basin 10.
The main points of technical solution of the present invention are: 1. id-motor adds frequency converter, controls rotation speed of fan automatically according to exhaust gas volumn.2. venturi scrubber and acid mist scrubbing tower return pipe enter the cooling sedimentation basin, by adding in the alkali and waste water, return venturi scrubber and acid mist scrubbing tower nozzle after the neutralization.
The invention has the advantages that:
(1) Venturi tube inwall brushing anticorrosive coat, effectively high temperature, acidic flue gas increase the service life to the corrosion of equipment.
(2) can reduce the dust loss amount, improve the recovery rate of product.
(3) by adding alkali (lime) neutralizing acid wastewater toward the cooling sedimentation basin, the waste water after the neutralization returns Venturi tube and acid mist scrubbing tower nozzle is recycling, realizes flue gas desulfurization, cleaning qualified discharge.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Symbol description among the figure: rotary kiln 1, one-level cyclone dust collectors 2-1, second cyclone dust extractor 2-2, venturi scrubber 3, spray thrower 4, acid mist scrubbing tower 5, wash spray device 6, blast pipe 7, feed pipe 8, return pipe 9, cooling sedimentation basin 10, air-introduced machine 11, chimney 12.
The specific embodiment
Below in conjunction with accompanying drawing and with illustrated embodiments the present invention is done detailed explanation.
Consult Fig. 1, control the rotary kiln flue gas processing device of fan delivery automatically, comprise one-level cyclone dust collectors 2-1, second cyclone dust extractor 2-2, venturi scrubber 3, acid mist scrubbing tower 5, cooling sedimentation basin 10, air-introduced machine 11; One-level cyclone dust collectors 2-1 air inlet connects rotary kiln 1 by pipeline, one-level cyclone dust collectors 2-1 gas outlet connects second cyclone dust extractor 2-2 air inlet, second cyclone dust extractor 2-2 gas outlet connects the air inlet of venturi scrubber 3, the gas outlet of venturi scrubber 3 connects the air inlet of acid mist scrubbing tower 5, the gas outlet of acid mist scrubbing tower 5 connects chimney 12 by blast pipe 7, air-introduced machine 11 is installed on blast pipe 7, on the air-introduced machine 11 frequency converter is installed; Spray thrower 4 is arranged in venturi scrubber 3, wash spray device 6 is arranged in acid mist scrubbing tower 5, spray thrower 4 is connected feed pipe 8 respectively with wash spray device 6, feed pipe 8 connects the supply-water pump of cooling sedimentation basin 10, venturi scrubber 3 is connected return pipe 9 with the pond of acid mist scrubbing tower 5 bottoms, and return pipe 9 connects cooling sedimentation basin 10.
In cooling sedimentation basin (10), add alkali neutralizing acid wastewater.
The present invention is a kind of rotary kiln flue gas processing mode of automatic control fan delivery, and main feature is: rotary kiln flue gas dust collecting system automatic control technology comprises two stage cyclone dry method dust, two-stage wet dedusting and frequency conversion fan, and the smoke treatment amount is 2000m
3/ h.Wherein the flue-gas temperature of one-level cyclone dust removal processing is 600 ℃, the about 1900Pa of resistance, and the flue-gas temperature that secondary cyclone dust removal is handled is 500 ℃, the about 1500Pa of resistance.
The high-temperature flue gas that the calcined by rotary kiln titanium dioxide produces contains a large amount of SO
3Etc. harmful substance,, through Venturi tube and acid mist scrubbing tower high temperature, high humidity, exhaust gas dust that viscosity is stronger are captured again through one-level, secondary cyclone pre-dusting.Blower fan add frequency converter can according to exhaust gas volumn control automatically rotation speed of fan with keep dedusting gas circuit and rotary kiln cross air quantity rationally, stable, reduce the dust loss amount, improve the recovery rate of product.
Above embodiment is the more preferably specific embodiment a kind of of the present invention, the common variation that those skilled in the art carry out in the technical program scope and replace and should be included in protection scope of the present invention.
Claims (2)
1. control the rotary kiln flue gas processing device of fan delivery automatically, it is characterized in that, comprise one-level cyclone dust collectors (2-1), second cyclone dust extractor (2-2), venturi scrubber (3), acid mist scrubbing tower (5), cooling sedimentation basin (10), air-introduced machine (11); One-level cyclone dust collectors (2-1) air inlet connects rotary kiln (1) by pipeline, one-level cyclone dust collectors (2-1) gas outlet connects second cyclone dust extractor (2-2) air inlet, second cyclone dust extractor (2-2) gas outlet connects the air inlet of venturi scrubber (3), the gas outlet of venturi scrubber (3) connects the air inlet of acid mist scrubbing tower (5), the gas outlet of acid mist scrubbing tower (5) connects chimney (12) by blast pipe (7), air-introduced machine (11) is installed on blast pipe (7), and air-introduced machine is equipped with frequency converter on (11); Spray thrower (4) is arranged in venturi scrubber (3), wash spray device (6) is arranged in acid mist scrubbing tower (5), spray thrower (4) is connected feed pipe (8) respectively with wash spray device (6), feed pipe (8) connects the supply-water pump of cooling sedimentation basin (10), venturi scrubber (3) is connected return pipe (9) with the pond of acid mist scrubbing tower (5) bottom, and return pipe (9) connects cooling sedimentation basin (10).
2. control the rotary kiln flue gas processing device of fan delivery according to claim 1 automatically, it is characterized in that, in cooling sedimentation basin (10), add alkali neutralizing acid wastewater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102781036A CN101972578A (en) | 2010-09-10 | 2010-09-10 | Rotary kiln flue gas treating device capable of automatically controlling blowing rate of draught fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102781036A CN101972578A (en) | 2010-09-10 | 2010-09-10 | Rotary kiln flue gas treating device capable of automatically controlling blowing rate of draught fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101972578A true CN101972578A (en) | 2011-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102781036A Pending CN101972578A (en) | 2010-09-10 | 2010-09-10 | Rotary kiln flue gas treating device capable of automatically controlling blowing rate of draught fan |
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| CN (1) | CN101972578A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102247708A (en) * | 2011-07-19 | 2011-11-23 | 北京北科环境工程有限公司 | Process for treating tail gas of rare earth mineral powder and concentrated sulphuric acid roasting process |
| CN104667637A (en) * | 2015-03-04 | 2015-06-03 | 安徽池州博源非金属矿研发中心有限公司 | Rotary kiln flue gas purification device |
| CN105561721A (en) * | 2015-12-23 | 2016-05-11 | 上海颜钛实业有限公司 | Titanium dioxide production process calcining tail gas processing method |
| CN105727727A (en) * | 2016-02-25 | 2016-07-06 | 攀枝花学院 | Treating method for vanadium slag roasting tail gas |
| CN108246084A (en) * | 2018-02-12 | 2018-07-06 | 攀枝花市仁通钒业有限公司 | Rotary kiln exhaust gas processing system |
| CN105709569B (en) * | 2016-03-08 | 2018-07-24 | 中冶南方工程技术有限公司 | The removing system of volatile organic matter for coal tar processing process discharge |
| CN110026046A (en) * | 2019-05-22 | 2019-07-19 | 国核维科锆铪有限公司 | A kind of device and method of processing calcining exhaust gas |
| CN110711763A (en) * | 2019-10-25 | 2020-01-21 | 嘉兴双军环保科技有限公司 | A harmless treatment system for phosphating slag |
| WO2020082570A1 (en) * | 2018-10-23 | 2020-04-30 | 沭阳凤凰美术颜料有限公司 | Purification system for pigment vacuum disperser |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2703966Y (en) * | 2004-05-06 | 2005-06-08 | 沈国华 | Wet flue gas high-efficiency desulfurizing and dust-removing equipment suitable for various desulfurizing agents |
| CN1631493A (en) * | 2004-11-10 | 2005-06-29 | 北京市劳动保护科学研究所 | A wet flue gas desulfurization method and device thereof |
| CN201433189Y (en) * | 2009-06-22 | 2010-03-31 | 柯荣义 | Intelligent flue gas recovering device |
-
2010
- 2010-09-10 CN CN2010102781036A patent/CN101972578A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2703966Y (en) * | 2004-05-06 | 2005-06-08 | 沈国华 | Wet flue gas high-efficiency desulfurizing and dust-removing equipment suitable for various desulfurizing agents |
| CN1631493A (en) * | 2004-11-10 | 2005-06-29 | 北京市劳动保护科学研究所 | A wet flue gas desulfurization method and device thereof |
| CN201433189Y (en) * | 2009-06-22 | 2010-03-31 | 柯荣义 | Intelligent flue gas recovering device |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102247708A (en) * | 2011-07-19 | 2011-11-23 | 北京北科环境工程有限公司 | Process for treating tail gas of rare earth mineral powder and concentrated sulphuric acid roasting process |
| CN104667637A (en) * | 2015-03-04 | 2015-06-03 | 安徽池州博源非金属矿研发中心有限公司 | Rotary kiln flue gas purification device |
| CN105561721A (en) * | 2015-12-23 | 2016-05-11 | 上海颜钛实业有限公司 | Titanium dioxide production process calcining tail gas processing method |
| CN105561721B (en) * | 2015-12-23 | 2018-01-12 | 上海颜钛实业有限公司 | The processing method of tail gas is calcined in production process of titanium pigment |
| CN105727727A (en) * | 2016-02-25 | 2016-07-06 | 攀枝花学院 | Treating method for vanadium slag roasting tail gas |
| CN105709569B (en) * | 2016-03-08 | 2018-07-24 | 中冶南方工程技术有限公司 | The removing system of volatile organic matter for coal tar processing process discharge |
| CN108246084A (en) * | 2018-02-12 | 2018-07-06 | 攀枝花市仁通钒业有限公司 | Rotary kiln exhaust gas processing system |
| WO2020082570A1 (en) * | 2018-10-23 | 2020-04-30 | 沭阳凤凰美术颜料有限公司 | Purification system for pigment vacuum disperser |
| CN110026046A (en) * | 2019-05-22 | 2019-07-19 | 国核维科锆铪有限公司 | A kind of device and method of processing calcining exhaust gas |
| CN110711763A (en) * | 2019-10-25 | 2020-01-21 | 嘉兴双军环保科技有限公司 | A harmless treatment system for phosphating slag |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20110216 |