CN204543942U - A kind of sulfuric acid tail gas mother liquid disposal apparatus system - Google Patents
A kind of sulfuric acid tail gas mother liquid disposal apparatus system Download PDFInfo
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- CN204543942U CN204543942U CN201520188475.8U CN201520188475U CN204543942U CN 204543942 U CN204543942 U CN 204543942U CN 201520188475 U CN201520188475 U CN 201520188475U CN 204543942 U CN204543942 U CN 204543942U
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- tail gas
- sulfuric acid
- apparatus system
- absorption tower
- disposal apparatus
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Abstract
The utility model relates to a kind of sulfuric acid tail gas mother liquid disposal apparatus system, for the treatment of the tail gas of discharging in sulfuric acid preparation process, described apparatus system comprises absorption tower, multiple spray rinsing cylinder, mother liquor storage tank, Ammonia vessel, nitration mixture groove, neutralization chamber, slurry-spraying pelletizing machine; The air inlet of bottom side, described absorption tower accepts the tail gas of sulfuric acid preparation process discharge, and the spray liquid import of the top side on described absorption tower is connected with Ammonia vessel; The offgas outlet on top, described absorption tower is connected with multiple spray rinsing cylinder air inlet; Bottom described absorption tower, tail gas mother liquor outlet is connected with mother liquor storage tank, and mother liquor storage tank is connected with neutralization chamber by pumping line; Neutralization chamber is connected with nitration mixture groove, and meanwhile, neutralization chamber is connected with Ammonia vessel; Neutralization chamber is also provided with pumping line to be connected with slurry-spraying pelletizing machine inlet.The utility model apparatus system is without the need to providing extra steam condensing crystallizing to ammonium sulfate liquor, and steam saving consumption, avoids sulfur dioxide and steam effusion simultaneously, improve environmental protection index.
Description
Technical field
The utility model relates to a kind of chemical production device system, and particularly a kind of sulfuric acid tail gas mother liquid disposal apparatus system, belongs to sulfuric acid tail gas Treatment process field.
Background technology
Existing sulfuric acid tail gas treatment system is adopt the sulfur dioxide in washing or ammonia water absorption removing tail gas mostly.Due in sulfuric acid tail gas remaining unconverted be the composition mainly sulfur dioxide of sulfuric acid, and the solubility of sulfur dioxide in water and stability not good, if directly wash absorption with water, usually secondary discharges, and causes environmental pollution.Ammonia absorption then has good stability, the ammonium sulfite good stability in aqueous that reaction generates except sulfur dioxide, and conveniently can pass into air oxidation conversion sulfite ion is sulfate ion.
Although mainly ammonium sulfate in the solution after catalytic oxidation, still can residual fraction sulfurous acid acid ammonium, so when ammonium sulfate evaporative crystallization generates ammonia sulfate crystal, wherein a small amount of sulfur dioxide can discharge again again, causes environmental pollution.
In order to when solving ammonium sulfate crystallization so the sulfur dioxide discharged, need in catalytic oxidation, utilize stronger oxidant or catalyst to ensure the complete of conversion, and this lifting needs to use excessive catalyst oxidant etc. usually, define the 3rd pollution sources, make the quality of ammonium sulfate not occur fluctuating widely, the quality control for chemical fertilizer is extremely unfavorable.
Utility model content
Goal of the invention of the present utility model is: for the problem of sulfur dioxide desorption release contaminated environment during prior art process sulfuric acid tail gas mother liquor, provide a kind of brand-new sulfuric acid tail gas mother liquid disposal apparatus system.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of sulfuric acid tail gas mother liquid disposal apparatus system, for the treatment of the tail gas of discharging in sulfuric acid preparation process, described apparatus system comprises absorption tower, multiple spray rinsing cylinder, mother liquor storage tank, Ammonia vessel, nitration mixture groove, neutralization chamber, slurry-spraying pelletizing machine.
The air inlet that bottom side, described absorption tower is provided with, for accepting the tail gas that sulfuric acid preparation process is discharged, the top side on described absorption tower is provided with spray liquid import, and described spray liquid import is connected with Ammonia vessel.
The offgas outlet on top, described absorption tower is connected with multiple spray rinsing cylinder air inlet.
Tail gas mother liquor outlet bottom described absorption tower is connected with mother liquor storage tank, and mother liquor storage tank is connected with neutralization chamber by pumping line.Neutralization chamber is connected with nitration mixture groove, and meanwhile, neutralization chamber is connected with Ammonia vessel.Neutralization chamber is provided with pumping line and is connected with slurry-spraying pelletizing machine inlet.
In the utility model, mother liquid disposal system structure of device is simple, and without redundant equipment running, production cost is low.Mother liquor storage tank is provided with air inlet duct road, for carrying out oxidative ammonium to input air in sulfuric acid tail gas mother liquor.Ammonium sulfite obtains the ammonium phosphate of stable chemical nature through oxidation processes, significantly reduces environmental pollution, improves the utilization rate of element sulphur in sulfuric acid tail gas, improves the conversion ratio in sulfuric acid preparation process.
As preferred version of the present utility model, be provided with the second inlet at the middle part on absorption tower, mother liquor storage tank is also connected with the second inlet in the middle part of absorption tower by pumping line.Sulfate liquor in mother liquor storage tank carries out cyclic absorption according to the situation of its actual sulfur dioxide absorption, improves the concentration of sulfuric acid imonium in mother liquor, reduces the consumption of absorbing liquid, also improves the final utilization rate of sulfuric acid tail gas mother liquor.
As preferred version of the present utility model, described sulfuric acid tail gas mother liquid disposal apparatus system also comprises cyclone separator, and cyclone separator air inlet is connected with described multiple spray rinsing cylinder gas outlet.Discharge sulfur dioxide and Ammonia vessel in gas through the absorption tower of multiple spray rinsing and can both be absorbed removal fully, further improve the environmental protection index of exhaust emissions, prevent the escape of ammonia absorption liquid from polluting.
As preferred version of the present utility model, described sulfuric acid tail gas mother liquid disposal apparatus system also comprises hydro-peening tank, and described hydro-peening tank stores the water being used for multiple spray rinsing.Hydro-peening tank is connected by the inlet of pumping line with multiple spray rinsing cylinder, and meanwhile, hydro-peening tank is also connected by the 3rd inlet of pumping line with the side, middle part on absorption tower.Utilize special hydro-peening tank to store spray washing and carry out cyclic absorption and the separation of tail gas moisture, improve the consumption of tail gas environmental protection exponential sum water resource.
As preferred version of the present utility model, the liquid outlet bottom cyclone separator is connected with hydro-peening tank.The liquid that cyclone separator is separated mainly answers the moisture being carried secretly out by tail gas in spray rinsing cylinder, is back in hydro-peening tank and is more conducive to repeatedly making full use of of water resource.
As preferred version of the present utility model, described sulfuric acid tail gas mother liquid disposal apparatus system also comprises particles packing machine, and the outlet of slurry-spraying pelletizing machine particulate material is connected with particles packing machine.The particulate material of slurry-spraying pelletizing is the chemical fertilizer pellet of finished product, is directly connected with packing machine by comminutor, improves the efficiency of production and processing greatly.
in sum, owing to have employed technique scheme, the beneficial effects of the utility model are:
1, the ammonium sulfate liquor not recrystallization generated after neutralization, avoiding sulfur dioxide gas and steam effusion, improving the ambient influnence to causing.
2, no longer provide extra steam to carry out condensing crystallizing to ammonium sulfate liquor, saved the consumption of steam, reduced production cost.
3, the ammonium sulfate liquor generated after neutralization is directly squeezed in compound fertilizer neutralization chamber and is used, for composite heat transfer is supplied raw materials.
4, Overall Reconstruction process is simple, without the need to additionally increasing too much equipment, remarkable in economical benefits.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model apparatus system.
Mark in figure: 1-absorption tower, 2-multiple spray rinsing cylinder, 3-mother liquor storage tank, 31-mother liquor storage tank discharging pump, 4-Ammonia vessel, 41-ammonium hydroxide delivery pump, 5-nitration mixture groove, 6-neutralization chamber, 61-neutralization chamber slurry delivery pump, 7-slurry-spraying pelletizing machine, 8-cyclone separator, 9-hydro-peening tank, 91-hydro-peening tank pump, 10-packing machine.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, sulfuric acid tail gas mother liquid disposal apparatus system comprises absorption tower 1, multiple spray rinsing cylinder 2, mother liquor storage tank 3, Ammonia vessel 4, nitration mixture groove 5, neutralization chamber 6, slurry-spraying pelletizing machine 7.The tail gas that sulfuric acid preparation process is discharged enters absorption tower from the air inlet of bottom side, absorption tower, spray from the spray liquid import of the top side on absorption tower 1 after ammonia spirit in Ammonia vessel is exported by ammonium hydroxide delivery pump 41, generate ammonium sulfite with sulfuric acid tail gas countercurrent reaction, ammonium sulfite is blended in spray liquid and enters mother liquor storage tank 2 from absorber column bottoms stream.Tail gas through absorption cleaning is then discharged from the offgas outlet on top, absorption tower 1, then at multiple spray rinsing cylinder 2 by water washing cleaning again.
Add catalytic oxidant in ammonium sulfite solution in mother liquor storage tank 3, sulfite oxidation is obtained the ammonium sulfate of stable chemical nature by the air passed in mother liquor tank.Ammonium sulfate then in mother liquor storage tank 3 is pumped in neutralization chamber 6 by mother liquor storage tank discharging pump 31.Neutralization chamber 6 is for accepting the mixed acid in nitration mixture groove 5 and the ammoniacal liquor in Ammonia vessel 4, makes the reaction vessel of its mutual neutralization reaction production composite fertilizer.The solution of mother liquor storage tank 3 is pumped in neutralization chamber 6, and the composite fertilizer produced with neutralization reaction mixes, and directly as the slip preparing compound fertilizer granules material, is transported in slurry-spraying pelletizing machine and is a granulated into complex fertilizer product.
Without unnecessary useless structure in above-mentioned mother liquid disposal apparatus system, only increase a small amount of conveyance conduit and pump machine relative to original structure, namely to overcome in prior art sulfur dioxide in sulfuric acid imonium crystallization process and to escape the secondary pollution caused.And can making full use of element sulphur in sulfuric acid tail gas, while improving production environment protective index, improve the utilization rate of raw material, reduce production cost.
Further, the second inlet that mother liquor storage tank 3 is also connected in the middle part of absorption tower 1 by mother liquor storage tank discharging pump 21 pumping line is as shown in Figure 1 connected.Absorption mother liquor in mother liquor storage tank 3 carries out cyclic absorption according to the situation of its actual sulfur dioxide absorption, improves the concentration of sulfuric acid imonium in mother liquor, reduces the consumption of absorbing liquid, also improves the final utilization rate of sulfuric acid tail gas mother liquor.
Further, described sulfuric acid tail gas mother liquid disposal apparatus system also comprises cyclone separator 8, and cyclone separator 8 air inlet is connected with described multiple spray rinsing cylinder 2 gas outlet.Described sulfuric acid tail gas mother liquid disposal apparatus system also comprises hydro-peening tank 9, and the water for multiple spray rinsing is deposited in described hydro-peening tank storage 9.Hydro-peening tank 9 is connected by the inlet of hydro-peening tank pump 91 pumping line with multiple spray rinsing cylinder 2, and meanwhile, hydro-peening tank 9 is also connected by the 3rd inlet of pumping line with the side, middle part on absorption tower 1.Utilize special hydro-peening tank to store spray washing and carry out cyclic absorption and the separation of tail gas moisture, improve the consumption of tail gas environmental protection exponential sum water resource.
Further, the liquid outlet bottom cyclone separator is connected with hydro-peening tank 9.
Finally, described apparatus system can also comprise particles packing machine 10, and the outlet of slurry-spraying pelletizing machine particulate material is connected with particles packing machine.The particulate material of slurry-spraying pelletizing is the chemical fertilizer pellet of finished product, is directly connected with packing machine 10 by comminutor 7, improves the efficiency of production and processing greatly.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. a sulfuric acid tail gas mother liquid disposal apparatus system, for the treatment of the tail gas of discharging in sulfuric acid preparation process, described apparatus system comprises absorption tower, multiple spray rinsing cylinder, mother liquor storage tank, Ammonia vessel, nitration mixture groove, neutralization chamber, slurry-spraying pelletizing machine;
Bottom side, described absorption tower is provided with air inlet, and for accepting the tail gas that sulfuric acid preparation process is discharged, the top side on described absorption tower is provided with spray liquid import, and described spray liquid import is connected with Ammonia vessel;
The offgas outlet on top, described absorption tower is connected with the air inlet of multiple spray rinsing cylinder;
Tail gas mother liquor outlet bottom described absorption tower is connected with mother liquor storage tank, and mother liquor storage tank is connected with neutralization chamber by pumping line;
Neutralization chamber is connected with nitration mixture groove, and meanwhile, neutralization chamber is connected with Ammonia vessel;
Neutralization chamber is also provided with pumping line to be connected with slurry-spraying pelletizing machine inlet.
2. sulfuric acid tail gas mother liquid disposal apparatus system according to claim 1, is characterized in that, mother liquor storage tank is also connected with the second inlet in the middle part of absorption tower by pumping line.
3. sulfuric acid tail gas mother liquid disposal apparatus system according to claim 1, is characterized in that, described sulfuric acid tail gas mother liquid disposal apparatus system also comprises cyclone separator, and cyclone separator air inlet is connected with described multiple spray rinsing cylinder gas outlet.
4. the sulfuric acid tail gas mother liquid disposal apparatus system according to claim 1 or 3, is characterized in that, described sulfuric acid tail gas mother liquid disposal apparatus system also comprises hydro-peening tank, and described hydro-peening tank stores the water being used for multiple spray rinsing;
Hydro-peening tank is connected by the inlet of pumping line with multiple spray rinsing cylinder.
5. sulfuric acid tail gas mother liquid disposal apparatus system according to claim 4, is characterized in that, hydro-peening tank is also connected by the 3rd inlet of pumping line with the side, middle part on absorption tower.
6. sulfuric acid tail gas mother liquid disposal apparatus system according to claim 3, it is characterized in that, the liquid outlet bottom cyclone separator is connected with hydro-peening tank.
7. sulfuric acid tail gas mother liquid disposal apparatus system according to claim 1, is characterized in that, described sulfuric acid tail gas mother liquid disposal apparatus system also comprises particles packing machine, and the outlet of slurry-spraying pelletizing machine particulate material is connected with particles packing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520188475.8U CN204543942U (en) | 2015-03-31 | 2015-03-31 | A kind of sulfuric acid tail gas mother liquid disposal apparatus system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520188475.8U CN204543942U (en) | 2015-03-31 | 2015-03-31 | A kind of sulfuric acid tail gas mother liquid disposal apparatus system |
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| CN204543942U true CN204543942U (en) | 2015-08-12 |
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| CN201520188475.8U Expired - Fee Related CN204543942U (en) | 2015-03-31 | 2015-03-31 | A kind of sulfuric acid tail gas mother liquid disposal apparatus system |
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2015
- 2015-03-31 CN CN201520188475.8U patent/CN204543942U/en not_active Expired - Fee Related
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 Termination date: 20160331 |