CN208406586U - A kind of oxidation treatment device of sulfuric acid tail gas - Google Patents
A kind of oxidation treatment device of sulfuric acid tail gas Download PDFInfo
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- CN208406586U CN208406586U CN201820606838.9U CN201820606838U CN208406586U CN 208406586 U CN208406586 U CN 208406586U CN 201820606838 U CN201820606838 U CN 201820606838U CN 208406586 U CN208406586 U CN 208406586U
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- absorption tower
- tail gas
- circulating absorption
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- sulfuric acid
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Abstract
The utility model discloses a kind of oxidation treatment devices of sulfuric acid tail gas, including circulating absorption tower, countercurrent spray absorption tower is fixedly connected on the outside of the circulating absorption tower, the top end opening inner wall on the countercurrent spray absorption tower, which is fixedly installed with, pre-washes nozzle, the circulating absorption tower is also circumscribed with replensiher and hydrogen peroxide metering pump for supplementing ionized water, the bottom end side wall of the circulating absorption tower is connected with cyclic absorption pump, the output end of cyclic absorption pump passes through the top side wall of the circulating absorption tower of pipeline connection and extends to inside, the other end of the pipeline is fixedly installed with several spray heads, the circulating absorption tower is electrically connected with electrostatic precipitator, the output end of the electrostatic precipitator is fixedly connected with chimney by smoke exhaust pipe.The beneficial effects of the utility model are: the discharge of pernicious gas in tail gas can effectively be controlled, and without secondary pollution, wherein the energy can be with recycled for multiple times, the characteristics of economizing on resources.
Description
Technical field
The utility model relates to tail gas disposal technique field, specially a kind of oxidation treatment device of sulfuric acid tail gas.
Background technique
After the 1990s, with the innovation and progress of technology, gas washing in SA production mostly uses greatly double conversion double absorption technique, and two
The tail gas for inhaling tower outlet can reach the emission request of " atmosphere pollutants emission standards " substantially, and the research of tail gas disposal technique is opened
Hair progress accordingly slows down.2010, State Ministry of Environmental Protection promulgated " sulfuric acid industry pollutant emission standard ", new standard clear stipulaties
Newly-built sulfuric acid apparatus was performed both by new discharge standard on October 1st, 2013, and the emission limit of sulfur dioxide in tail gas is
400mg/m3, acid mist emission limit value are 30mg/m3, are distinctly claimed in new discharge standard, higher in territorial development density,
Environmental bearing capacity starts to weaken or atmospheric environment capacity is smaller, ecological environment frailty, is easy to happen serious atmospheric environmental pollution
Problem and the area for needing to take special protection measure, answer the disposal of pollutants behavior of strict control enterprise, the enterprise in above-mentioned area
Industry executes the special emission limit of atmosphere pollution, i.e. sulfur dioxide (SO2) emissions limit value is 200mg/m3, and acid mist emission limit value is 5mg/
m3.To meet exhaust emissions environmental requirement, research promotion is efficient, clean sulfuric acid tail gas processing method is very necessary.
Currently, sulfuric acid tail gas desulfurization technology mainly has ammonia-acid process, absorbing by liquid caustic soda method, amine process etc., above several tail gas
Sulfur method can all generate brine waste, cause secondary pollution.
To meet pollutant emission requirement as defined in new standard, surpassing for the sulfur dioxide and acid mist in tail gas is further realized
Low emission, invention the utility model utility patent technology, is absorbed using hydrogen peroxide oxidation, and nozzle sprays and recycle in advance the side of counter-current absorption
Method handles sulfuric acid tail gas, and absorption tower tower top sets electrostatic precipitator, effectively removes the sulphuric acid mist content in emission, to reach " sulfuric acid
Emission of industrial pollutants standard " in special emission limit requirement.
Utility model content
The technical issues of the utility model solves be to overcome defect of the existing technology, provides a kind of sulfuric acid tail gas
Oxidation treatment device.The oxidation treatment device of the sulfuric acid tail gas has the discharge that can effectively control pernicious gas in tail gas,
And it is without secondary pollution, wherein the energy can be with recycled for multiple times, the characteristics of economizing on resources.
To achieve the above object, the utility model provides the following technical solutions: a kind of oxidation treatment device of sulfuric acid tail gas,
Including circulating absorption tower, countercurrent spray absorption tower is fixedly connected on the outside of the circulating absorption tower, the countercurrent spray absorbs
The top end opening inner wall of tower, which is fixedly installed with, pre-washes nozzle, and the circulating absorption tower is also circumscribed with the benefit for supplementing ionized water
Device and hydrogen peroxide metering pump are filled, the bottom end side wall of the circulating absorption tower is connected with cyclic absorption pump, the cyclic absorption pump
Output end passes through the top side wall of the circulating absorption tower of pipeline connection and extends to inside, and the other end of the pipeline is fixedly mounted
There are several spray heads, the circulating absorption tower is electrically connected with electrostatic precipitator, and the output end of the electrostatic precipitator is solid by smoke exhaust pipe
Surely chimney is connected.
Preferably, the replensiher and hydrogen peroxide metering pump are fixedly mounted on the outer wall of circulating absorption tower and it is exported
End is respectively positioned on the inside of circulating absorption tower, the connector of the countercurrent spray absorption tower and circulating absorption tower be located at replensiher and pair
The top of oxygen water metering pump.
Preferably, Tail gas measuring analyzer, the top of the chimney are also fixedly installed with inside the top end opening of the chimney
End is provided with the awning for preventing rainwater.
Preferably, the positive and negative anodes of the electrostatic precipitator are respectively and fixedly installed on the top and side wall of circulating absorption tower.
Preferably, the junction of the cyclic absorption pump and circulating absorption tower is provided with solenoid valve.
Compared with prior art, the utility model has the beneficial effects that the row of pernicious gas in tail gas can effectively be controlled
It puts, and without secondary pollution, wherein the energy can be with recycled for multiple times, the characteristics of economizing on resources.
Detailed description of the invention
Fig. 1 is the utility model.
Figure label: 1 circulating absorption tower, 2 countercurrent spray absorption towers, 3 pre-wash nozzle, 4 cyclic absorptions pump, 5 electric demistings
Device, 6 chimneys, 7 Tail gas measuring analyzers.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Referring to Fig. 1, the utility model provides a kind of technical solution: a kind of oxidation treatment device of sulfuric acid tail gas, including
Circulating absorption tower 1, the outside of the circulating absorption tower 1 are fixedly connected with countercurrent spray absorption tower 2, the replensiher and hydrogen peroxide
Metering pump is fixedly mounted on the outer wall of circulating absorption tower 1 and its output end is respectively positioned on the inside of circulating absorption tower 1, described inverse
The connector of stream spray absorber 2 and circulating absorption tower 1 is located at the top of replensiher and hydrogen peroxide metering pump, the countercurrent spray
The top end opening inner wall on absorption tower 2, which is fixedly installed with, pre-washes nozzle 3, the circulating absorption tower 1 be also circumscribed with for supplement from
The replensiher and hydrogen peroxide metering pump of sub- water, the bottom end side wall of the circulating absorption tower 1 is connected with cyclic absorption pump 4, described to follow
The junction of ring absorption pump 4 and circulating absorption tower 1 is provided with solenoid valve, and the output end of the cyclic absorption pump 4 is connected by pipeline
The top side wall of the circulating absorption tower 1 connect simultaneously extends to inside, and the other end of the pipeline is fixedly installed with several spray heads, described
Circulating absorption tower 1 is electrically connected with electrostatic precipitator 5, and the positive and negative anodes of the electrostatic precipitator 5 are respectively and fixedly installed to circulating absorption tower 1
Top and side wall on, the output end of the electrostatic precipitator 5 is fixedly connected with chimney 6 by smoke exhaust pipe, and the top of the chimney 6 is opened
Mouth is internal to be also fixedly installed with Tail gas measuring analyzer 7, and the top of the chimney 6 is provided with the awning for preventing rainwater.
Working principle
The tail gas (containing sulfur dioxide, micro sulfur trioxide and acid mist) for inhaling tower outlet from sulfuric acid apparatus two is inhaled by circulation
It receives tower import and goes out the pre- spray-absorption of nozzle installed, tail gas absorbs after entering tower with circulation fluid countercurrent spray, and sulfur dioxide is by dioxygen
Water oxidative absorption flows into tower bottom circulating slot and uses at dilute sulfuric acid.Absorption tower exit gas through electrostatic precipitator trapping droplet (water mist,
Acid mist), sulfur dioxide, acid mist in tail gas empty after reaching discharge standard through chimney.According to dioxy safe on tail gas funnel
Change sulphur concentration in-line analyzer feedback, variable frequency adjustment hydrogen peroxide metering pump controls the dioxygen water flow being pumped into.Absorption cycle pumps out
Mouth sets side line and send part diluted acid to dry absorption section as moisturizing, and adsorption tower smoke inlet sets nozzle pretreatment, exhanst gas outlet
If electrostatic precipitator, the content of the effective sulfur dioxide controlled in tail gas and acid mist, sulfur dioxide concentration is lower than 200mg/m3, acid
The concentration of mist is lower than 5mg/m3, meets " sulfuric acid industry pollutant emission standard " GB26132- of execution from October 1st, 2013
The requirement of special emission limit in 2010；Sulfur dioxide absorbed by hydrogen peroxide oxidation after benefit of the dilute sulfuric acid as dry absorption section
Water, this system is without secondary pollution, according to the difference of sulfuric acid apparatus scale, conversion process and catalyst choice, nozzle quantity, spray
Amount, the design of internal circulating load are also different.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (5)
1. a kind of oxidation treatment device of sulfuric acid tail gas, including circulating absorption tower (1), it is characterised in that: the circulating absorption tower
(1) it is fixedly connected on the outside of countercurrent spray absorption tower (2), the top end opening inner wall of the countercurrent spray absorption tower (2) is fixed
It is equipped with and pre-washes nozzle (3), the circulating absorption tower (1) is also circumscribed with based on the replensiher and hydrogen peroxide that supplement ionized water
Amount pump, the bottom end side wall of the circulating absorption tower (1) are connected with cyclic absorption pump (4), the output end of the cyclic absorption pump (4)
Pass through the top side wall of the circulating absorption tower (1) of pipeline connection and extend to inside, the other end of the pipeline is fixedly installed with
Several spray heads, the circulating absorption tower (1) are electrically connected with electrostatic precipitator (5), and the output end of the electrostatic precipitator (5) passes through row
Smoke pipe is fixedly connected with chimney (6).
2. according to a kind of oxidation treatment device of sulfuric acid tail gas described in claim 1, it is characterised in that: the replensiher and dioxygen
Water metering pump is fixedly mounted on the outer wall of circulating absorption tower (1) and its output end is respectively positioned on the inside of circulating absorption tower (1),
The connector of the countercurrent spray absorption tower (2) and circulating absorption tower (1) is located at the top of replensiher and hydrogen peroxide metering pump.
3. according to a kind of oxidation treatment device of sulfuric acid tail gas described in claim 1, it is characterised in that: the top of the chimney (6)
It is also fixedly installed with inside end opening Tail gas measuring analyzer (7), the top of the chimney (6) is provided with for preventing rainwater
Awning.
4. according to a kind of oxidation treatment device of sulfuric acid tail gas described in claim 1, it is characterised in that: the electrostatic precipitator (5)
Positive and negative anodes be respectively and fixedly installed on the top and side wall of circulating absorption tower (1).
5. according to a kind of oxidation treatment device of sulfuric acid tail gas described in claim 1, it is characterised in that: the cyclic absorption pump
(4) junction of circulating absorption tower (1) is provided with solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820606838.9U CN208406586U (en) | 2018-04-26 | 2018-04-26 | A kind of oxidation treatment device of sulfuric acid tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820606838.9U CN208406586U (en) | 2018-04-26 | 2018-04-26 | A kind of oxidation treatment device of sulfuric acid tail gas |
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| CN208406586U true CN208406586U (en) | 2019-01-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112107983A (en) * | 2020-08-17 | 2020-12-22 | 南京汇仁化工设备有限公司 | Hydrogen peroxide desulfurization process |
-
2018
- 2018-04-26 CN CN201820606838.9U patent/CN208406586U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112107983A (en) * | 2020-08-17 | 2020-12-22 | 南京汇仁化工设备有限公司 | Hydrogen peroxide desulfurization process |
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