CN101914677A - Drying and dust-removing apparatus for forced air drying section of chain grate and drying and dust-removing technology - Google Patents
Drying and dust-removing apparatus for forced air drying section of chain grate and drying and dust-removing technology Download PDFInfo
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- CN101914677A CN101914677A CN2010102731215A CN201010273121A CN101914677A CN 101914677 A CN101914677 A CN 101914677A CN 2010102731215 A CN2010102731215 A CN 2010102731215A CN 201010273121 A CN201010273121 A CN 201010273121A CN 101914677 A CN101914677 A CN 101914677A
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Abstract
The invention relates to the field of a forced air drying technology of a chain grate in a chain grate-rotary kiln pelletizing technology, in particular to a drying and dust-removing apparatus for the forced air drying section of the chain grate and a drying and dust-removing technology. The technology comprises the following steps: carrying out dust-removing treatment and compulsory air draft on waste air in the forced air drying section by using a dust-removing fan and a dust remover; using a pipeline to connect the waste air in two auxiliary air boxes under a grate bed with a main waste air pipeline to completely draining the waste air in the auxiliary air boxes; using the pipeline to transmit the waste air in a dust-removing hood to the main waste air pipeline, thereby ensuring that a sufficient negative pressure can completely drain the waste air in the dust-removing hood; and using the pipeline to introduce the hot air in the high temperature section of the chain grate into the dust-removing apparatus and the fan, wherein an electrically operated valve and a temperature measuring instrument are arranged on the pipeline, thereby ensuring that the waste air has enough temperature without forming dew. The invention has the advantages that the drying effect of the forced air drying section can be ensured, and a green-ball can not burst because of overlarge moisture when entering into a next link; the production environment in a workshop of the forced air drying section is improved; and the pollution of waste air discharge on the environment is reduced.
Description
Technical field
The present invention relates to chain grate machine-rotary kiln pelletizing process medium chain grate apparatus for forced Technology field, particularly a kind of dust-removing apparatus for forced air drying section of chain grate and dry dust collecting process.
Background technology
Energy-saving and emission-reduction will run through in the long term among the economic life as a fundamental state policy, have influence on all trades and professions.A plurality of fly-ash separators have been designed in chain grate machine-rotary kiln pelletizing process production line link, these fly-ash separators not only to the process dedusting also to final exhaust gas discharged dedusting, we can say that whole process has fewer environmental impacts, still, the waste gas of chain grate apparatus for forced section is taked the directly way of discharging always.Consider that this part waste gas water content is big, do not have the dust removal installation that is fit to; Because this part waste gas dustiness is lower, therefore, all think in a very long time to there is no need dedusting again.Following problem before not adopting dust collecting process, chain grate apparatus for forced section is arranged: one, not enough owing to diffusing chimney height, can't provide enough negative pressure that cover waste gas on the blasting drying period is directly all extracted out, this just makes a part of waste gas enter the workshop from chain grate machine feed end or bellows interface and slit, and this part waste gas constitutes very big influence to the production environment in workshop.Because this part spent air temperture is at 60～70 ℃, is being mingled with not only dust simultaneously and giving the people's feel to be exactly not only heat but also dirty; Two, because the process characteristic of blasting drying period needs up-draught drying fan that the hot waste gas from central cooler is passed the green-ball bed of material from bottom to top, waste gas afterwards need carry moisture that green-ball takes off and discharge on the blasting drying period and cover.But, if there is not the dedusting fan forced draft, only rely on the draft of diffusing chimney can't realize enough negative pressure, such result assembles one section very large waste gas layer of water content in green-ball upper surface space, the water content of the green-ball on these waste gas and chain grate machine grate bed top forms dynamic balance, and just this part green-ball does not only obtain drying and may make the increase of green-ball moisture on the contrary.The a large amount of broken reasons of green-ball in producing before Here it is.At these problems, must improve technology.
Summary of the invention
The purpose of this invention is to provide a kind of dust-removing apparatus for forced air drying section of chain grate.
Another object of the present invention provides a kind of apparatus for forced air drying section of chain grate dust collecting process.
A kind of dust-removing apparatus for forced air drying section of chain grate of the present invention comprises the fly-ash separator, dedusting fan of chain grate machine, the exhaust pipeline that is connected of fly-ash separator, dedusting fan therewith, it is characterized in that:
1) draw hot air duct from chain grate apparatus for forced section and be connected with described fly-ash separator, dedusting fan,
2) under chain grate apparatus for forced section feeding end grate bed two secondary bellows are set, these two secondary bellows are connected with main exhaust pipeline by hot air duct,
3) on chain grate apparatus for forced section feeding end grate bed top a dust excluding hood is set, this dust excluding hood is connected with main exhaust pipeline by the dust excluding hood pipeline,
4) the described exhaust pipeline that is connected with fly-ash separator, dedusting fan is connected by the high temperature section of hot air duct with chain grate machine, is connected with fly-ash separator and dedusting fan from described chain grate apparatus for forced section introduction pipe.
Electrically operated valve and temperature measuring device are set on described hot air duct.
Described pipeline is the pipeline of integral heat insulation.
A kind of dry dust collecting process that adopts described dust-removing apparatus for forced air drying section of chain grate is characterized in that comprising following processing step:
1) by the hot air duct of drawing the waste gas of blasting drying period is introduced described dedusting fan, fly-ash separator, utilizes dedusting fan and fly-ash separator that the waste gas of blasting drying period is carried out dust removal process and forced draft from chain grate apparatus for forced section,
2) by under chain grate apparatus for forced section feeding end grate bed, two secondary bellows being set and these two secondary bellows being connected with main exhaust pipeline, the waste gas in two secondary bellows is introduced main exhaust pipeline enters dust removal installation and dedusting fan with hot air duct,
3) dust excluding hood by being provided with on chain grate apparatus for forced section feeding end grate bed top is delivered to main exhaust pipeline to the waste gas in the dust excluding hood with pipeline,
4) with hot air duct the high temperature section hot blast of chain grate machine is introduced main exhaust pipeline and enter dust removal installation and blower fan.
The invention provides a kind of novel chain grate apparatus for forced segment process is: 1) utilize dedusting fan and fly-ash separator that the waste gas of blasting drying period is carried out dust removal process and forced draft; 2) again the waste gas in following two the secondary bellows of chain grate apparatus for forced section feeding end grate bed is connected with main exhaust pipeline with pipeline, can guarantees that so enough negative pressure pump the waste gas in the secondary bellows fully; 3) on chain grate apparatus for forced section feeding end grate bed top a dust excluding hood is set, the waste gas in the dust excluding hood is delivered to main exhaust pipeline, can guarantee that equally enough negative pressure pump the waste gas in the dust excluding hood fully with pipeline; 4) with pipeline chain grate machine high temperature section hot blast is introduced main exhaust pipeline and enter dust removal installation and blower fan, electrically operated valve and temperature measuring device are set on pipeline guarantee not dewfall of spent air temperture.
Advantage of the present invention:
1) guarantee the blasting drying period drying effect, green-ball enters next link explosion can not take place because moisture is excessive;
2) improve production environment in the blasting drying period workshop;
3) reduce the pollution of exhaust gas emission to environment.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the side-view of Fig. 1.
Embodiment
Below in conjunction with description of drawings the specific embodiment of the present invention.
As shown in Figure 1 and Figure 2, dust-removing apparatus for forced air drying section of chain grate of the present invention comprises the fly-ash separator, dedusting fan of chain grate machine, the exhaust pipeline that is connected of fly-ash separator, dedusting fan therewith, it is characterized in that:
1) draw hot air duct 2 from chain grate apparatus for forced section 1 and be connected with described fly-ash separator, dedusting fan,
2) under chain grate apparatus for forced section 1 feed end grate bed two secondary bellows 3 are set, these two secondary bellows 3 are connected with main exhaust pipeline 4 by hot air duct 2,
3) on chain grate apparatus for forced section feeding end grate bed top a dust excluding hood 5 is set, this dust excluding hood 5 is connected with main exhaust pipeline 4 by dust excluding hood pipeline 6,
4) the described exhaust pipeline that is connected with fly-ash separator, dedusting fan is connected by the high temperature section of hot air duct 7 with chain grate machine,
Be connected with fly-ash separator and dedusting fan from described chain grate apparatus for forced section 1 introduction pipe.
Electrically operated valve 8 and temperature measuring device 9 are set on described hot air duct 2.
Described pipeline is the pipeline of integral heat insulation.
A kind of dry dust collecting process that adopts described dust-removing apparatus for forced air drying section of chain grate is characterized in that comprising following processing step:
1) by the hot air duct of drawing the waste gas of blasting drying period is introduced described dedusting fan, fly-ash separator from chain grate apparatus for forced section, utilize dedusting fan and fly-ash separator that the waste gas of blasting drying period is carried out dust removal process and forced draft, forced draft helps the moisture of green-ball and deviates from
2) two secondary bellows by under chain grate apparatus for forced section feeding end grate bed, being provided with, these two secondary bellows are connected with main exhaust pipeline with hot air duct, waste gas in two secondary bellows is introduced main exhaust pipeline enter dust removal installation and dedusting fan, guarantee that enough negative pressure pump the waste gas in the secondary bellows fully, guarantee dust removing effects
3) dust excluding hood by being provided with on chain grate apparatus for forced section feeding end grate bed top is delivered to main exhaust pipeline to the waste gas in the dust excluding hood with pipeline, guarantees that enough negative pressure pump the waste gas in the dust excluding hood fully,
4) with hot air duct chain grate machine high temperature section hot blast is introduced main exhaust pipeline and enter dust removal installation and blower fan, guarantee that waste gas has enough temperature and can dewfall, introduce hot blast from chain grate machine high-temperature area, reduce the probability of dewfall so effectively with pipeline.
Advantage of the present invention:
1) guarantee the blasting drying period drying effect, green-ball enters next link explosion can not take place because moisture is excessive;
2) improve production environment in the blasting drying period workshop;
3) reduce toxic emission to the pollution of environment.
Claims (4)
1. dust-removing apparatus for forced air drying section of chain grate comprises the fly-ash separator, dedusting fan of chain grate machine, the exhaust pipeline that is connected of fly-ash separator, dedusting fan therewith, it is characterized in that:
1) draw hot air duct from chain grate apparatus for forced section and be connected with described fly-ash separator, dedusting fan,
2) under chain grate apparatus for forced section feeding end grate bed two secondary bellows are set, these two secondary bellows pass through hot blast
Pipeline is connected with main exhaust pipeline,
3) on chain grate apparatus for forced section feeding end grate bed top a dust excluding hood is set, this dust excluding hood is connected with main exhaust pipeline by the dust excluding hood pipeline,
4) the described exhaust pipeline that is connected with fly-ash separator, dedusting fan is connected by the high temperature section of hot air duct with chain grate machine,
Be connected with fly-ash separator and dedusting fan from described chain grate apparatus for forced section introduction pipe.
2. dust-removing apparatus for forced air drying section of chain grate according to claim 1 is characterized in that being provided with electrically operated valve and temperature measuring device on described hot air duct.
3. dust-removing apparatus for forced air drying section of chain grate according to claim 1 is characterized in that described pipeline is the pipeline of integral heat insulation.
4. dry dust collecting process that adopts the described dust-removing apparatus for forced air drying section of chain grate of claim 1 is characterized in that comprising following processing step:
1) by the hot air duct of drawing the waste gas of blasting drying period is introduced described dedusting fan, fly-ash separator, utilizes dedusting fan and fly-ash separator that the waste gas of blasting drying period is carried out dust removal process and forced draft from chain grate apparatus for forced section,
2) by under chain grate apparatus for forced section feeding end grate bed, two secondary bellows being set and these two secondary bellows being connected with main exhaust pipeline, the waste gas in two secondary bellows is introduced main exhaust pipeline enters dust removal installation and dedusting fan with hot air duct,
3) dust excluding hood by being provided with on chain grate apparatus for forced section feeding end grate bed top is delivered to main exhaust pipeline to the waste gas in the dust excluding hood with pipeline,
4) with hot air duct the high temperature section hot blast of chain grate machine is introduced main exhaust pipeline and enter dust removal installation and blower fan.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102731215A CN101914677B (en) | 2010-09-06 | 2010-09-06 | Drying and dust-removing apparatus for forced air drying section of chain grate and drying and dust-removing technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102731215A CN101914677B (en) | 2010-09-06 | 2010-09-06 | Drying and dust-removing apparatus for forced air drying section of chain grate and drying and dust-removing technology |
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| CN101914677A true CN101914677A (en) | 2010-12-15 |
| CN101914677B CN101914677B (en) | 2012-06-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697711A (en) * | 2013-02-28 | 2014-04-02 | 中冶北方（大连）工程技术有限公司 | Dust removal system of chain grate machine tail part |
| CN104501574A (en) * | 2014-11-25 | 2015-04-08 | 南通四通林业机械制造安装有限公司 | Split type fast drying and dedusting connection device |
| CN107300327A (en) * | 2017-07-05 | 2017-10-27 | 鞍钢集团矿业有限公司 | A kind of drying and preheating new method of pelletizing production |
| CN110652844A (en) * | 2019-11-01 | 2020-01-07 | 中冶北方（大连）工程技术有限公司 | Waste gas purification system and method for upper cover of dry section of pellet drum |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278017A (en) * | 2013-05-27 | 2013-09-04 | 中冶北方（大连）工程技术有限公司 | Device preventing diffusing chimney of blower-driven drying segment of grate kiln from condensing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3945817A (en) * | 1973-12-17 | 1976-03-23 | Nippon Kokan Kabushiki Kaisha | Method for the collection of dust of a high zinc content during the production of reduced iron pellets |
| JPS5597433A (en) * | 1979-01-19 | 1980-07-24 | Hitachi Zosen Corp | Preparation of sintered ore |
| JPS56105435A (en) * | 1980-01-23 | 1981-08-21 | Mitsubishi Heavy Ind Ltd | Recovery of waste heat in sintering plant |
| CN101624647A (en) * | 2009-08-04 | 2010-01-13 | 武汉钢铁(集团)公司 | Pellet roasting production technology recycling residual heat and system thereof |
| CN201764837U (en) * | 2010-09-06 | 2011-03-16 | 中冶北方工程技术有限公司 | Drying dust-cleaning apparatus for forced air drying section of chain grate machine |
-
2010
- 2010-09-06 CN CN2010102731215A patent/CN101914677B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3945817A (en) * | 1973-12-17 | 1976-03-23 | Nippon Kokan Kabushiki Kaisha | Method for the collection of dust of a high zinc content during the production of reduced iron pellets |
| JPS5597433A (en) * | 1979-01-19 | 1980-07-24 | Hitachi Zosen Corp | Preparation of sintered ore |
| JPS56105435A (en) * | 1980-01-23 | 1981-08-21 | Mitsubishi Heavy Ind Ltd | Recovery of waste heat in sintering plant |
| CN101624647A (en) * | 2009-08-04 | 2010-01-13 | 武汉钢铁(集团)公司 | Pellet roasting production technology recycling residual heat and system thereof |
| CN201764837U (en) * | 2010-09-06 | 2011-03-16 | 中冶北方工程技术有限公司 | Drying dust-cleaning apparatus for forced air drying section of chain grate machine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697711A (en) * | 2013-02-28 | 2014-04-02 | 中冶北方（大连）工程技术有限公司 | Dust removal system of chain grate machine tail part |
| CN103697711B (en) * | 2013-02-28 | 2015-08-19 | 中冶北方（大连）工程技术有限公司 | The dust pelletizing system of chain grate drive end unit |
| CN104501574A (en) * | 2014-11-25 | 2015-04-08 | 南通四通林业机械制造安装有限公司 | Split type fast drying and dedusting connection device |
| CN107300327A (en) * | 2017-07-05 | 2017-10-27 | 鞍钢集团矿业有限公司 | A kind of drying and preheating new method of pelletizing production |
| CN110652844A (en) * | 2019-11-01 | 2020-01-07 | 中冶北方（大连）工程技术有限公司 | Waste gas purification system and method for upper cover of dry section of pellet drum |
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| CN101914677B (en) | 2012-06-20 |
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