CN105688642A - Dust removal system for removing sulfur dioxide and dioxin from sintering flue gas - Google Patents
Dust removal system for removing sulfur dioxide and dioxin from sintering flue gas Download PDFInfo
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- CN105688642A CN105688642A CN201410712978.0A CN201410712978A CN105688642A CN 105688642 A CN105688642 A CN 105688642A CN 201410712978 A CN201410712978 A CN 201410712978A CN 105688642 A CN105688642 A CN 105688642A
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- flue gas
- activated coke
- sulfur dioxide
- dioxin
- sintering flue
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Abstract
The invention relates to a dust removal system for removing sulfur dioxide and dioxin from sintering flue gas, and belongs to the technical field of flue gas treatment. The dust removal system comprises a quench tower, a cloth bag type dust remover, an activated coke filling absorption tower and another cloth bag type dust remover which are sequentially connected, wherein the activated coke filling absorption tower is divided into an upper part and a lower part from the middle by an arranged activated coke purification filter plate, a desulfurizing agent storage device and a water spray nozzle are arranged at the lower part, and a detachable activated coke purification filter layer is fitted with the inner wall of the upper part. Compared with the prior art, the dust removal system disclosed by the invention is reasonable in structure, effectively removes the harmful ingredients such as sulfur dioxide and dioxin from the sintering flue gas, can meet the process requirements, and is good in purification performance, high in efficiency and lower in usage cost.
Description
Technical field
The present invention relates to fume treatment technical field, particularly a kind of dust pelletizing system for removing sulfur dioxide in sintering flue gas and dioxin。
Background technology
Steel and iron industry is the pillar industry of Chinese national economy, and propelling and development for industrialization and urbanization are made that significant contribution。But China's steel and iron industry Environmental Protection Level is low simultaneously, pollutant discharge amount remains high, and seriously restricts the raising of steel industry whole competitiveness。In iron and steel enterprise's discharge waste gas, typical pollutant mainly includes dust, SO2, dioxin pollution thing etc., and in these pollutant, wherein more than 70% SO2, the air dioxin pollution thing of 90% discharges from steel sintering machine。Therefore it is one of the center of gravity of iron and steel pollution treatment to sintering device flue gas pollution control。
Flue gas desulfurization has dry method, semidry method, wet method three kinds。Dry desulfurization is inefficient, although wet desulphurization desulfuration efficiency is higher, but it is big to there is equipment investment, and floor space is big, and water resource waste, the shortcomings such as secondary pollution is serious, therefore the application of wet desulphurization is subject to certain restriction。The present flue gas of sintering machine overwhelming majority adopts semi-dry desulphurization。Semi-dry desulphurization has many kinds, including rotary spraying and drying sulfur removal technology, Circulating Fluidized Bed Process, dense-phase tower method desulfurization skill, ENS semi-dry desulphurization, VAI MEROS sulfur removal technology, LEC semidry methods etc. are multiple, whether adopt and in absorption reaction tower, be injected directly into quick lime serosity and flue gas react, or adopt calcium lime powder and atomized water to react with flue gas at Ta Nei, after end reaction, drop is dried rapidly by sintering flue gas heat, form dry state powder-material, then continued trapping by sack cleaner to purify, therefore semi-dry desulphurization does not produce waste water。
Summary of the invention
The invention provides a kind of dust pelletizing system for removing sulfur dioxide in sintering flue gas and dioxin, activated coke defecator is set in existing semi-dry desulphurization absorption tower, it is possible to realize sintering flue gas is carried out the purpose of high-efficiency desulfurization, de-dioxin and heavy metal。
It is an object of the invention to by realizing by the following technical solutions:
For removing the dust pelletizing system of sulfur dioxide in sintering flue gas and dioxin, described dust pelletizing system include being sequentially connected connect chilling tower, sack cleaner, activated coke packed absorber, sack cleaner, the cleaned filter plate of activated coke that described activated coke packed absorber is set is divided into upper and lower two parts from middle part, bottom is provided with desulfurizing agent memorizer and water spout, and upper inside wall is fitted with dismountable has the cleaned filtering layer of activated coke。
As the preferred technical solution of the present invention, described sack cleaner is low-pressure jet pulse bag type dust catcher。
As the preferred technical solution of the present invention, described activated coke packed absorber bottom adopts Venturi tube, and described Venturi tube is followed successively by circular cone contraction section, cylindrical section and conical expander section from the bottom up；Described desulfurizing agent memorizer is arranged at circular cone contraction section；Described water spout is arranged at conical expander section, and described circular cone contraction section is arranged below electric cleaner。
As the preferred technical solution of the present invention, the cleaned filtering layer of described activated coke is semi-spherical shape, and protruding sphere is towards entering flue gas direction。
The invention has the beneficial effects as follows: relative to prior art, present configuration is reasonable, can effectively remove the harmful components such as the sulfur dioxide sintered in flue gas and dioxin。Dust pelletizing system of the present invention disclosure satisfy that technological requirement, and its purifying property is good, efficiency is high, use cost is relatively low。
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention。
In figure: 1, chilling tower；2, sack cleaner is 1.；3, activated coke packed absorber；31, the cleaned filtering layer of activated coke；32, the cleaned filter plate of activated coke；33, water spout；34, Venturi tube；35, electric cleaner；36, desulfurizing agent memorizer；4, sack cleaner is 2.；5, chimney。
Detailed description of the invention
As shown in Figure 1, for removing the dust pelletizing system of sulfur dioxide in sintering flue gas and dioxin, including be sequentially connected connect chilling tower 1, sack cleaner 2, activated coke packed absorber 3, sack cleaner 4, the cleaned filter plate of activated coke that described activated coke packed absorber 3 is set 32 is divided into upper and lower two parts from middle part, bottom is provided with desulfurizing agent memorizer 36 and water spout 33, and upper inside wall is fitted with dismountable has the cleaned filtering layer 31 of activated coke。
In the present embodiment, sack cleaner 2 and sack cleaner 4 are low-pressure jet pulse bag type dust catcher, it includes support, casing, blowing device, filter bag and pulse control instrument, filter bag is located in casing, the lower end of casing and upper end are respectively equipped with air inlet and air outlet, casing ash-discharging device is arranged below, pulse control instrument is connected with blowing device circuit；Blowing device is arranged on above casing, and blowing device is connected with air compression plant by pipeline, and blowing device includes injection tube, nozzle and electromagnetic valve, and electromagnetic valve is located in injection tube and is connected with described Pulse Width Control instrument circuit。
This sack cleaner adopts Pressure difference feedback formula pulsed electron controller, in the pulse spacing according to cleaner running resistance regulation blowing device voluntarily, makes winding-up number of times reduce to minimum。Realizing the winding-up function of low-pressure, short pulse punching, it is lightweight, take up an area less, cost is low, and efficiency of dust collection is high, stable, dependable performance, easy to maintenance。
In the present embodiment, activated coke packed absorber bottom adopts Venturi tube 34, and Venturi tube 34 is followed successively by circular cone contraction section, cylindrical section and conical expander section from the bottom up；Desulfurizing agent memorizer 36 is arranged at circular cone contraction section；Water spout 33 is arranged at conical expander section, and circular cone contraction section is arranged below electric cleaner 35。The cleaned filter plate 32 of activated coke is semi-spherical shape, and protruding sphere, towards entering flue gas direction, adopts the cleaned filtering layer 32 of activated coke of semi-spherical shape mainly to make dust and noxious substance at semispherical surface, increases filter area, improve filter effect。
The present invention is by above-mentioned dust pelletizing system purifying sintering flue gas, it is possible to the effectively harmful components such as the sulfur dioxide in elimination sintering flue gas and dioxin, dioxin annual average < 0.5TEQng/m3, SO2<50mg/Nm3, particulate matter < 2.5mg/Nm3。Purifying property of the present invention is good, efficiency is high, and use cost is relatively low。
Claims (4)
1. the dust pelletizing system being used for removing sulfur dioxide in sintering flue gas and dioxin, it is characterized in that, described dust pelletizing system include being sequentially connected connect chilling tower, sack cleaner, activated coke packed absorber, sack cleaner, the cleaned filter plate of activated coke that described activated coke packed absorber is set is divided into upper and lower two parts from middle part, bottom is provided with desulfurizing agent memorizer and water spout, and upper inside wall is fitted with the cleaned filtering layer of dismountable activated coke。
2. the dust pelletizing system for removing sulfur dioxide in sintering flue gas and dioxin according to claim 1, it is characterised in that described sack cleaner is low-pressure jet pulse bag type dust catcher。
3. the dust pelletizing system for removing sulfur dioxide in sintering flue gas and dioxin according to claim 1 and 2, it is characterized in that, described activated coke packed absorber bottom adopts Venturi tube, and described Venturi tube is followed successively by circular cone contraction section, cylindrical section and conical expander section from the bottom up；Described desulfurizing agent memorizer is arranged at circular cone contraction section；Described water spout is arranged at conical expander section, and described circular cone contraction section is arranged below electric cleaner。
4. the dust pelletizing system for removing sulfur dioxide in sintering flue gas and dioxin according to claim 3, it is characterised in that the cleaned filtering layer of described activated coke is semi-spherical shape, protruding sphere is towards entering flue gas direction。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410712978.0A CN105688642A (en) | 2014-11-27 | 2014-11-27 | Dust removal system for removing sulfur dioxide and dioxin from sintering flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410712978.0A CN105688642A (en) | 2014-11-27 | 2014-11-27 | Dust removal system for removing sulfur dioxide and dioxin from sintering flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105688642A true CN105688642A (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410712978.0A Pending CN105688642A (en) | 2014-11-27 | 2014-11-27 | Dust removal system for removing sulfur dioxide and dioxin from sintering flue gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105688527A (en) * | 2014-11-27 | 2016-06-22 | 江苏康洁环境工程有限公司 | A device for removing sulfur dioxide and dioxin from sintering flue gas and a method therefor |
| CN109464876A (en) * | 2018-12-29 | 2019-03-15 | 广西六万山林业有限公司 | A kind of container glued board processing dust collecting and gas purifying device |
-
2014
- 2014-11-27 CN CN201410712978.0A patent/CN105688642A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105688527A (en) * | 2014-11-27 | 2016-06-22 | 江苏康洁环境工程有限公司 | A device for removing sulfur dioxide and dioxin from sintering flue gas and a method therefor |
| CN109464876A (en) * | 2018-12-29 | 2019-03-15 | 广西六万山林业有限公司 | A kind of container glued board processing dust collecting and gas purifying device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160622 |
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| WD01 | Invention patent application deemed withdrawn after publication |