CN101625202A - Treatment process for removing sulfur, dust and fog from flue gas of sintering machine - Google Patents
Treatment process for removing sulfur, dust and fog from flue gas of sintering machine Download PDFInfo
- Publication number
- CN101625202A CN101625202A CN200810040410A CN200810040410A CN101625202A CN 101625202 A CN101625202 A CN 101625202A CN 200810040410 A CN200810040410 A CN 200810040410A CN 200810040410 A CN200810040410 A CN 200810040410A CN 101625202 A CN101625202 A CN 101625202A
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- CN
- China
- Prior art keywords
- flue gas
- sintering machine
- treatment process
- imports
- electric cleaner
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- 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.)
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- 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
Abstract
The invention aims to provide a treatment process for removing sulfur, dust and fog from flue gas of a sintering machine, which can effectively solve the problems that a sulfur removal device in the prior art for treating sintered flue gas has high expense, high cost, low sulfur removal efficiency, and the like. The treatment process has the advantages that the treatment process can effectively reduce the discharge amount of toxic gas, save electrical energy and water, reduce the discharge amount of waste water, reduce the workload of equipment maintenance and reduce the cost, and is safe and reliable to operate.
Description
Technical field
The present invention relates to a kind of treatment process for removing sulfur, dust and fog from flue gas of sintering machine.
Background technology
In metallurgy industry, sintering is meant various powdery iron-containing raw materials, allocates suitable fuel and flux into, evenly mixes, and being placed on then lights a fire on the agglomerating plant fires.In the high-temperature firing process, partially mixed mineral aggregate particle surface takes place softening and fusing, produces a certain amount of liquid metal, wetting other unfused ore particles, after the cooling, mineral powder granular is agglomerated into bulk, this process is called sintering, and the nugget of gained is in sintering deposit.What of flux amount sintering deposit add during according to its basicity height or sintering, can be divided into three kinds of ordinary sinter ore deposit, self-fluxed sinter and fluxed sinters.
Sintering machine satisfies the required raw material of blast furnace process with Iron Ore Powder and other batchings after specific sintering process is handled.After sinter fume is the sinter mixture igniting, with chassis operation, the dust-laden exhaust gas that in the high temperature sintering forming process, is produced.The sinter molding process of blast furnace gas igniting and compound all can produce toxic gas or corrosive gas such as a certain amount of hydrogen chloride, hydrogen fluoride, nitrogen oxide, sulfur oxide.In sintering process, the sintering machine middle part can produce a large amount of sulfur dioxide, and its concentration value depends on that the one-tenth of SINTERING PRODUCTION load, used Iron Ore Powder, solvent, fuel and other additives grades, and changes bigger.It is many that sinter fume carries dust, and water content is big, is rich in toxic gases such as sulfur dioxide, forms acid rain, contaminated environment easily.Existing sinter fume treatment technology, desulfurizer expense costliness, the cost height, desulfuration efficiency is low, is difficult to reach country and allows discharge standard.
Summary of the invention
The purpose of this invention is to provide a kind of treatment process for removing sulfur, dust and fog from flue gas of sintering machine, can effectively solve desulfurizer expense costliness in the existing sinter fume treatment technology, cost height, problem such as desulfuration efficiency is low.The present invention relates to a kind of treatment process for removing sulfur, dust and fog from flue gas of sintering machine, it is characterized in that, may further comprise the steps:
1) starts sintering machine;
2) start first air-introduced machine and second air-introduced machine, first air-introduced machine imports first electric cleaner by the wind collection scoop on the sintering machine sidewall and rare sulfur dioxide flue with the flue gas of sintering machine two end portions and carries out dust removal process, and second air-introduced machine imports second electric cleaner by the wind collection scoop on the sintering machine sidewall and concentration sulfur dioxide flue with the flue gas of sintering machine mid portion and carries out dust removal process;
3) start flue gas heater and wet desulphurization device, the flue gas that first electric cleaner was handled imports the flue gas heater heat treated, and the flue gas of simultaneously second electric cleaner being handled imports wet desulphurization device and carries out the desulfurization processing;
4) start the rotation fogbroom, will import the rotation fogbroom through the flue gas that desulfurization is handled and carry out processed;
5) will import flue gas heater through the flue gas of processed and carry out heat treated;
6) flue gas after the heat treated is imported dried chimney, be discharged in the atmosphere.
The invention has the advantages that: the present invention can effectively reduce toxic gas discharge capacity, saves energy and water, handling safety reliable, reduce wastewater discharge, reduce maintenance of equipment work amount and reduce cost.
The specific embodiment
The present invention relates to a kind of treatment process for removing sulfur, dust and fog from flue gas of sintering machine, it is characterized in that, may further comprise the steps:
1) starts sintering machine;
2) start first air-introduced machine and second air-introduced machine, first air-introduced machine imports first electric cleaner by the wind collection scoop on the sintering machine sidewall and rare sulfur dioxide flue with the flue gas of sintering machine two end portions and carries out dust removal process, and second air-introduced machine imports second electric cleaner by the wind collection scoop on the sintering machine sidewall and concentration sulfur dioxide flue with the flue gas of sintering machine mid portion and carries out dust removal process;
The sulfur dioxide in flue gas content that the sintering machine two end portions produces is lower, and the sulfur dioxide in flue gas content that the sintering machine middle body produces is more.Flue-gas temperature in the sintering machine is very high, and generally about 200-800 ℃, first electric cleaner and second electric cleaner all are dedustings under hot conditions.
3) start flue gas heater and wet desulphurization device, the flue gas that first electric cleaner was handled imports the flue gas heater heat treated, and the flue gas of simultaneously second electric cleaner being handled imports wet desulphurization device and carries out the desulfurization processing;
Wet desulphurization device, can adopt existing sulfur removal technology device etc., as lime lime-gypsum method, magnesium oxide method, two alkaline process, ammonia process, seawater method and semidry process desulfurizer, in sweetening process, except sulfur dioxide, toxic gases such as hydrogen chloride, hydrogen fluoride, nitrogen oxide, sulfur oxide or corrosive gas also can be removed, but can contain large quantity of moisture in the flue gas.In this process, the present invention can reach 99% desulfuration efficiency, guarantees can use in the sintering machine the various troilite that contain; In this process, the present invention can eliminate 50% dust contained flue gas, for environment protection emission has been carried out technological preparation.
4) start the rotation fogbroom, will import the rotation fogbroom through the flue gas that desulfurization is handled and carry out processed;
Wet flue gas is removed water smoke in the flue gas by the rotation fogbroom, guarantees that flue gas does not have the ability of etching apparatus at low temperatures.
5) will import flue gas heater through the flue gas of processed and carry out heat treated;
Dry flue gas after the desulfurization is with the flue gas Hybrid Heating of not desulfurization, and the dry flue gas temperature after the heating reaches the temperature above semi-dry process flue gas desulphurization, can improve the fume emission rising height, and then reaches the purpose of energy-saving and emission-reduction.
6) flue gas after the heat treated is imported dried chimney, be discharged in the atmosphere.
Claims (1)
1. a treatment process for removing sulfur, dust and fog from flue gas of sintering machine is characterized in that, may further comprise the steps:
1) starts sintering machine;
2) start first air-introduced machine and second air-introduced machine, first air-introduced machine imports first electric cleaner by the wind collection scoop on the sintering machine sidewall and rare sulfur dioxide flue with the flue gas of sintering machine two end portions and carries out dust removal process, and second air-introduced machine imports second electric cleaner by the wind collection scoop on the sintering machine sidewall and concentration sulfur dioxide flue with the flue gas of sintering machine mid portion and carries out dust removal process;
3) start flue gas heater and wet desulphurization device, the flue gas that first electric cleaner was handled imports the flue gas heater heat treated, and the flue gas of simultaneously second electric cleaner being handled imports wet desulphurization device and carries out the desulfurization processing;
4) start the rotation fogbroom, will import the rotation fogbroom through the flue gas that desulfurization is handled and carry out processed;
5) will import flue gas heater through the flue gas of processed and carry out heat treated;
6) flue gas after the heat treated is imported dried chimney, be discharged in the atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810040410A CN101625202A (en) | 2008-07-09 | 2008-07-09 | Treatment process for removing sulfur, dust and fog from flue gas of sintering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810040410A CN101625202A (en) | 2008-07-09 | 2008-07-09 | Treatment process for removing sulfur, dust and fog from flue gas of sintering machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101625202A true CN101625202A (en) | 2010-01-13 |
Family
ID=41521130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810040410A Pending CN101625202A (en) | 2008-07-09 | 2008-07-09 | Treatment process for removing sulfur, dust and fog from flue gas of sintering machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101625202A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102423727A (en) * | 2011-11-21 | 2012-04-25 | 济南钢铁股份有限公司 | Sintering machine head dust removing and ash conveying device and use method thereof |
-
2008
- 2008-07-09 CN CN200810040410A patent/CN101625202A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102423727A (en) * | 2011-11-21 | 2012-04-25 | 济南钢铁股份有限公司 | Sintering machine head dust removing and ash conveying device and use method thereof |
| CN102423727B (en) * | 2011-11-21 | 2014-02-05 | 济钢集团有限公司 | Sintering machine head dust removing and ash conveying device and use method thereof |
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Open date: 20100113 |