CN205294840U - A decoloration device that is used for sulfur production of non -ferrous metal metallurgy flue gas to tingle - Google Patents
A decoloration device that is used for sulfur production of non -ferrous metal metallurgy flue gas to tingle Download PDFInfo
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- CN205294840U CN205294840U CN201620007512.5U CN201620007512U CN205294840U CN 205294840 U CN205294840 U CN 205294840U CN 201620007512 U CN201620007512 U CN 201620007512U CN 205294840 U CN205294840 U CN 205294840U
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- sulfuric acid
- scrubbing tower
- decoloration device
- sulphuric acid
- decoloration
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Abstract
The utility model discloses a decoloration device that is used for sulfur production of non -ferrous metal metallurgy flue gas to tingle, including sulphuric acid decoloration reation kettle, sulphuric acid storage tank, sulphuric acid pump, scrubbing tower, the cooler that connects gradually, the pipe connection is passed through on the sulphuric acid pump in the upper portion of scrubbing tower, and the pipe connection is passed through on the cooler in the lower part of scrubbing tower, the lower part of scrubbing tower still with relieving haperacidity tail gas union coupling. It utilizes the high concentration acidizing fluid and the oxidability of decolorizer that contains in the liquid after the sulphuric acid decoloration, the tail gas among the non -ferrous metal metallurgy carries out the desulfurization, becomes sulphuric acid with the sulfur dioxide oxidation, both can absorb tail gas, can improve vitriolic output again, utilizes this decoloration device can make the chemical agent of interpolation few, and with low costs, process flow is short, and process is simple, and equipment area is little, extensive applicability, and once only invest and the working costs hangs down.
Description
Technical field
The utility model relates to a kind of decoloration device for the made sulfuric acid of non-ferrous metal metallurgy flue gas, belongs to vent gas treatment field.
Background technology
Sulfuric acid is one of important basic chemical industry raw material, is product important in chemical industry, mainly for the manufacture of inorganic chemical fertilizer, secondly as basic chemical industry raw material. For industrial departments such as nonferrous smelting, petroleum refining and petrochemical industry, textile printing and dyeing, inorganic chemicals industry, some inorganic acid and organic acid, rubber industry, paint industry and defence and military, agricultural chemicals medicine, process hides, coking, in addition for pickling iron and steel.
The raw material of producing sulfuric acid mainly contains sulphur, troilite, non-ferrous metal metallurgy flue gas, gypsum, hydrogen sulfide and Waste Sulfuric Acid etc. Bright sulfur acid is a kind of colorless and odorless oily liquids. The industrial sulphuric acid of troilite, sulphur, flue gas during smelting or other sulfur-bearing waste will meet national standard " industrial sulphuric acid " (GB/T534-2014), in standard, the credit rating of the concentrated sulfuric acid is in the mass concentration of sulfuric acid, have quantitative target containing aspects such as ash content, iron, arsenic, lead, mercury, transparency and colourities, the credit rating of the lower sulfuric acid of content of impurity is higher. Quality and the price of product are closely bound up, identical product different brackets price great disparity is very large, can sulfuric acid quality be more and more important for a lot of manufacturing enterprises, sell away and maintain a satisfied price and produce certain economic benefit because it is related to product. This point is particularly useful for non-ferrous metal metallurgy industry sulphur dioxide flue gas acid preparing enterprise, because these flue gas during smeltings contain much impurity, flue dust and smog conventionally, need to be removed to avoid product acid to pollute. Metal species, the smelting process selected smelted are different with apparatus-form, flue gas during smelting composition difference, the difficult quality guarantee of the sulfuric acid of producing. For ensureing the quality of product acid and the stable operation of device, sulphuric acid plant is provided with fume purifying processes, also needs in addition to improve targetedly the removal efficiency to some impurity. However, non-ferrous metal metallurgy flue gas acid preparing adopts conventional acid-making process sulfuric acid product to be difficult to the industrial sulphuric acid quality standard that reaches existing. Have not yet to see the processing method of report for coloured sulfuric acid, therefore must seek the high-quality sulfuric acid of the direct output of a kind of good process.
For sulphuric acid plant, the gap of existing relieving haperacidity technical merit and national more and more stricter sulfuric acid industry Air Pollutant Emission concentration limit, the dry SO inhaling in the relieving haperacidity tail gas out of final absorption tower of conventional relieving haperacidity2Concentration is higher than standard limited value, and the relieving haperacidity tail gas of some smelting enterprises discharge is thick smoke, has destroyed widely the atmospheric environment that the mankind depend on for existence. So must set up desulfurizer, remove dense smoke device in the dry operation of inhaling of conventional relieving haperacidity. What a lot of sulphuric acid plants were single has set up desulfurizer, uses the useful alkaline matter of more sulfur removal technology as sodium hydroxide solution, milk of lime, zinc oxide etc., or activated coke, ionic liquid, By Amine Solutions are by the SO in relieving haperacidity tail gas2After absorbing, desorb again and send to relieving haperacidity, but these method one-time investments and operating cost are as higher in desulfurizing agent, power consumption, water consumption or steam consumption. For the dense smoke of discharge, having not yet to see report has treating method; For the decolouring of coloured sulfuric acid, directly in decoloring reaction still, carry out a decoloring reaction and can not remove all foreign pigments, and the pollution of decolorizer and excessive be also one must not irrespective problem; Therefore a kind of good process of necessary searching together solves these problems.
Utility model content
The technical problem that the utility model solves is that a kind of device that not only can make sulfuric acid decolouring but also can absorb relieving haperacidity tail gas sulphur dioxide is provided.
The technical solution of the utility model is, a kind of decoloration device for the made sulfuric acid of non-ferrous metal metallurgy flue gas is provided, and comprises the sulfuric acid decoloring reaction still, sulfuric acid storage tank, sulfuric acid pump, scrubbing tower, the cooler that connect successively; The top of described scrubbing tower is connected on sulfuric acid pump by pipeline, and the bottom of scrubbing tower is connected on cooler by pipeline, and the bottom of scrubbing tower is also connected with relieving haperacidity offgas duct.
Further, relieving haperacidity offgas duct is connected to the bottom of scrubbing tower by blower fan.
Further, described blower fan is booster fan.
Further, on described sulfuric acid decoloring reaction still, establish filler, acid-adding port and add decolorizer mouth.
Further, described scrubbing tower is packed tower.
Further, described sulfuric acid storage tank is the underground storage tank of sulfuric acid.
Further, the feed pipe of described sulfuric acid storage tank and discharge nozzle are all established heat-insulation layer.
Further, on described sulfuric acid decoloring reaction still, establish exhaust outlet, described exhaust outlet is connected with relieving haperacidity offgas duct.
Device of the present utility model be metallurgical off-gas acid-making is dry inhale operation after, by the processing of decolouring of produced coloured sulfuric acid, relieving haperacidity tail gas carries out desulfurization and removes dense smoke processing. Only need to add a small amount of chemical agent, sulfuric acid good decolorizing effect, relieving haperacidity tail gas desulfuration efficiency is high, except dense smoke successful. Not only improved the added value of sulfuric acid, in FGD-Flue gas desulphurization process by the SO in flue gas2Directly change into concentrated sulfuric acid product, not only solved the SO in the relieving haperacidity tail gas discharging2And the pollution problem of dense smoke to environment, also increase the output of the concentrated sulfuric acid.
The beneficial effects of the utility model are, it utilizes the high concentration acid solution that contains in the liquid after sulfuric acid decolouring and the oxidisability of decolorizer, and the tail gas in non-ferrous metal metallurgy carries out desulfurization, and oxidizing sulfur dioxide is become to sulfuric acid, both tail gas can be absorbed, the output of sulfuric acid can be improved again. Utilize this decoloration device can make the chemical agent of interpolation few, cost is low, and technological process is short, and technical process is simple, and occupation area of equipment is little, and applicability is wide, and one-time investment and operating cost are low.
Brief description of the drawings
Fig. 1 represents the decoloration device of a kind of sulfuric acid that the utility model provides.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment 1
The present embodiment provides a kind of decoloration device for the made sulfuric acid of non-ferrous metal metallurgy flue gas, comprises the sulfuric acid decoloring reaction still 1, sulfuric acid storage tank 2, sulfuric acid pump 3, scrubbing tower 4, the cooler 5 that connect successively; The top of scrubbing tower 4 is connected on sulfuric acid pump 3 by pipeline, and the bottom of scrubbing tower 4 is connected on cooler 5 by pipeline, and the bottom of scrubbing tower 4 is also connected with relieving haperacidity offgas duct 7, and relieving haperacidity offgas duct 7 is connected to the bottom of scrubbing tower 4 by blower fan 6; Wherein, blower fan 6 is booster fan, and scrubbing tower 4 is packed tower, and sulfuric acid storage tank 2 is the underground storage tank of sulfuric acid, establishes filler, acid-adding port and add decolorizer mouth on sulfuric acid decoloring reaction still 1; The feed pipe of sulfuric acid storage tank 2 and discharge nozzle are all established heat-insulation layer, on sulfuric acid decoloring reaction still 1, establish exhaust outlet, and described exhaust outlet is connected with relieving haperacidity offgas duct 7.
Produce the advanced sulfuric acid decoloring reaction of coloured sulfuric acid still from the dry operation of inhaling, then enter the underground storage tank of concentrated acid, concentrated sulfuric acid mixed liquor is got to scrubbing tower from the underground storage tank of concentrated acid through sulfuric acid pump, at inner-tower filling material layer and containing SO2Dense smoke counter current contacting heat and mass reaction, from flowing out in tower, after the cooling of concentrated acid cooler, to send sulfuric acid storage tank to store for sale; Containing SO2Relieving haperacidity tail gas boost and send scrubbing tower through blower fan from the dry final absorption tower of operation of inhaling, after fully reacting, drain into atmosphere through tower top foam removal acid fog removing device, chimney at the concentrated sulfuric acid mixed liquor of sending here with concentrated acid underground tank in tower from bottom to top.
Processing flow with this device is 13m3The mass concentration of/h is 93.5% the concentrated sulfuric acid, and contained ash content does not meet certified products index, and transparency and colourity do not reach Grade A index; SO in dense smoke2Concentration is 600mg/m3, exceeding existing limited value of discharge standard, after the operation of this device, in the present embodiment, the sulfuric acid indices of output has reached high-class product, drains into the tail gas SO the tail gas of atmosphere from chimney2Concentration, well below the limit value in discharge standard, is 50mg/m3, desulfurization degree is 91.7%, has no dense smoke.
Claims (8)
1. for a decoloration device for the made sulfuric acid of non-ferrous metal metallurgy flue gas, it is characterized in that, comprise the sulfuric acid decoloring reaction still (1), sulfuric acid storage tank (2), sulfuric acid pump (3), scrubbing tower (4), the cooler (5) that connect successively; It is upper that the top of described scrubbing tower (4) is connected to sulfuric acid pump (3) by pipeline, and it is upper that the bottom of scrubbing tower (4) is connected to cooler (5) by pipeline, and the bottom of scrubbing tower (4) is also connected with relieving haperacidity offgas duct (7).
2. decoloration device as claimed in claim 1, is characterized in that, relieving haperacidity offgas duct (7) is connected to the bottom of scrubbing tower (4) by blower fan (6).
3. decoloration device as claimed in claim 2, is characterized in that, described blower fan (6) is booster fan.
4. decoloration device as claimed in claim 1 or 2, is characterized in that, establishes filler, acid-adding port and add decolorizer mouth on described sulfuric acid decoloring reaction still (1).
5. decoloration device as claimed in claim 1 or 2, is characterized in that, described scrubbing tower (4) is packed tower.
6. decoloration device as claimed in claim 1 or 2, is characterized in that, described sulfuric acid storage tank (2) is the underground storage tank of sulfuric acid.
7. decoloration device as claimed in claim 1 or 2, is characterized in that, feed pipe and the discharge nozzle of described sulfuric acid storage tank (2) are all established heat-insulation layer.
8. decoloration device as claimed in claim 1 or 2, is characterized in that, on described sulfuric acid decoloring reaction still (1), establishes exhaust outlet, and described exhaust outlet is connected with relieving haperacidity offgas duct (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620007512.5U CN205294840U (en) | 2016-01-07 | 2016-01-07 | A decoloration device that is used for sulfur production of non -ferrous metal metallurgy flue gas to tingle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620007512.5U CN205294840U (en) | 2016-01-07 | 2016-01-07 | A decoloration device that is used for sulfur production of non -ferrous metal metallurgy flue gas to tingle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205294840U true CN205294840U (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620007512.5U Active CN205294840U (en) | 2016-01-07 | 2016-01-07 | A decoloration device that is used for sulfur production of non -ferrous metal metallurgy flue gas to tingle |
Country Status (1)
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|---|---|
| CN (1) | CN205294840U (en) |
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2016
- 2016-01-07 CN CN201620007512.5U patent/CN205294840U/en active Active
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