CN105645364A - Device and method using hydrogen peroxide, activated carbon and smelting exhaust gas to produce acid - Google Patents
Device and method using hydrogen peroxide, activated carbon and smelting exhaust gas to produce acid Download PDFInfo
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- CN105645364A CN105645364A CN201610126435.XA CN201610126435A CN105645364A CN 105645364 A CN105645364 A CN 105645364A CN 201610126435 A CN201610126435 A CN 201610126435A CN 105645364 A CN105645364 A CN 105645364A
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- acid
- hydrogen peroxide
- activated carbon
- spraying layer
- flue gas
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- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims abstract description 187
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 115
- 239000002253 acid Substances 0.000 title claims abstract description 56
- 238000003723 Smelting Methods 0.000 title claims abstract description 47
- 239000007789 gas Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 25
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 126
- 238000005507 spraying Methods 0.000 claims abstract description 68
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims abstract description 55
- 238000004062 sedimentation Methods 0.000 claims abstract description 28
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 9
- 238000003860 storage Methods 0.000 claims abstract description 6
- 229960002163 hydrogen peroxide Drugs 0.000 claims description 89
- 239000010410 layer Substances 0.000 claims description 68
- 239000003546 flue gas Substances 0.000 claims description 60
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 56
- 238000006477 desulfuration reaction Methods 0.000 claims description 32
- 230000023556 desulfurization Effects 0.000 claims description 29
- 235000011149 sulphuric acid Nutrition 0.000 claims description 29
- 239000001117 sulphuric acid Substances 0.000 claims description 29
- 239000000243 solution Substances 0.000 claims description 27
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 claims description 26
- 230000008569 process Effects 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 16
- 230000004907 flux Effects 0.000 claims description 10
- 239000002356 single layer Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims description 3
- 238000010790 dilution Methods 0.000 claims description 2
- 239000012895 dilution Substances 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims 1
- 238000003889 chemical engineering Methods 0.000 abstract 1
- 230000008929 regeneration Effects 0.000 abstract 1
- 238000011069 regeneration method Methods 0.000 abstract 1
- 235000010269 sulphur dioxide Nutrition 0.000 description 16
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical class [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 3
- 229940069428 antacid Drugs 0.000 description 3
- 239000003159 antacid agent Substances 0.000 description 3
- 230000001458 anti-acid effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000004291 sulphur dioxide Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
- C01B17/76—Preparation by contact processes
- C01B17/80—Apparatus
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to a device and method using hydrogen peroxide, activated carbon and smelting exhaust gas to produce acid and belongs to the technical field of chemical engineering. The device is characterized in that a smelting exhaust gas inlet is formed in one side of the lower portion of a desulfurizing tower, a plurality of hydrogen peroxide solution spraying layers are arranged inside the desulfurizing tower, the topmost hydrogen peroxide solution spraying layer is provided with a group of fixing beds filled with activated carbon, the fixing beds are provided with a group of diluted sulfuric acid spraying layers, the top of the desulfurizing tower is provided with a tail gas outlet, the hydrogen peroxide solution spraying layers are sequentially connected with a hydrogen peroxide storage tank and a hydrogen peroxide preparing tank through pumps and valves, the diluted sulfuric acid spraying layers are sequentially connected with the upper portion of an acid solution sedimentation tank in the desulfurizing tower through pumps and valves, and the bottom of the acid solution sedimentation tank is sequentially connected with a regeneration tank and a finished-product acid tank through pumps and valves. The device can desulfurize the exhaust gas of a smelting system to produce sulfuric acid, and resource utilization of the sulfur dioxide in the smelting exhaust gas is achieved by the device and method.
Description
Technical field
The present invention relates to a kind of hydrogen peroxide and activated carbon apparatus and method to metallurgical off-gas acid-making of utilizing, belong to chemical technology field.
Background technology
Sulphuric acid is important chemical article, is widely used in the productions such as fertilizer, medicine, chemicals, detergent, water process. By the end of the year 2014, China's sulphuric acid production capacity reaches 123Mt/a. At present, gas washing in SA production mainly has 3 kinds of raw materials: acid production with sulphur, pyrite-based sulfuric acid production and metallurgical off-gas acid-making, accounts for the 45% of sulphuric acid total output, 25% and 30% respectively.
Containing substantial amounts of sulfur dioxide in non-ferrous metal metallurgy flue gas, air can be caused severe contamination by direct discharge, causes natural, ecological destructive unbalance, is also the waste to Sulphur ressource. Along with economic develops rapidly, the demand of non-ferrous metal being surged, according to the objective of environmental protection, the improvement of non-ferrous metal metallurgy flue gas is just particularly important, wherein metallurgical off-gas acid-making is the Main Means that metallurgical sulphur dioxide is recycled. Utilize the discharge that metallurgical off-gas acid-making can not only effectively reduce pollution gas to make its recycling, and produce good economic benefit in antacid field.
For variable concentrations SO2Flue Gas of Nonferrous Smelting, processing method is not quite similar. For SO2Concentration flue gas more than 3.5% adopts one turn one to inhale method antacid; For SO2Concentration, at the flue gas during smelting of 7% ~ 12%, mainly adopts traditional contact method antacid, such as double-absorption technology, reclaims SO from flue gas2Generate H2SO4; For SO2Oxygen-rich smelting flue gas more than 20% adopts three-conversion three-absorption technology; Conventional contacts legal system acid complex process, and relatively costly. The unstability of flue gas during smelting also makes metallurgical off-gas acid-making be subject to certain restrictions.
Summary of the invention
For above-mentioned prior art Problems existing and deficiency, the present invention provides a kind of and utilizes hydrogen peroxide and the activated carbon apparatus and method to metallurgical off-gas acid-making. These apparatus and method achieve the recycling of metallurgical sulphur dioxide, and technical solution of the present invention is achieved by.
A kind of hydrogen peroxide and activated carbon device to metallurgical off-gas acid-making of utilizing, including desulfurization tower body, flue gas during smelting entrance 1, it is filled with the fixing bed 2 of activated carbon, dilute sulfuric acid spraying layer 3, offgas outlet 4, hydrogenperoxide steam generator spraying layer 5, hydrogen peroxide accumulator tank 6, hydrogen peroxide surge-tank 7, regenerated reactor, finished product acid tank 12, pump 13 and valve 14, side, described desulfurization tower body bottom is provided with flue gas during smelting entrance 1, above flue gas during smelting entrance 1, in desulfurizing tower body, portion is provided with some layers of hydrogenperoxide steam generator spraying layer 5, the hydrogenperoxide steam generator spraying layer 5 of top is provided with the fixing bed 2 being filled with activated carbon, the fixing bed 2 being filled with activated carbon is provided with dilute sulfuric acid spraying layer 3, the fixing bed 2 and the dilute sulfuric acid spraying layer 3 that are filled with activated carbon are one group, concrete group number is according to circumstances determined, desulfurization tower body top is provided with offgas outlet 4, hydrogenperoxide steam generator spraying layer 5 passes sequentially through pump 13 and valve 14 is sequentially connected with hydrogen peroxide accumulator tank 6, hydrogen peroxide surge-tank 7, dilute sulfuric acid spraying layer 3 connects the acid solution sedimentation basin top in desulfurization tower body by pump 13 and valve 14, it is sequentially connected with regenerated reactor and finished product acid tank 12 by pump 13 and valve 14 bottom acid solution sedimentation basin.
The described fixing bed 2 being filled with activated carbon adopts dual bed.
A kind of hydrogen peroxide and activated carbon device application process to metallurgical off-gas acid-making of utilizing, it specifically comprises the following steps that
(1) first the flue gas removing dust purification heat exchange of smelting system being cooled to temperature is less than 85 DEG C, then enter into desulfurization tower body from flue gas during smelting entrance 1, in hydrogenperoxide steam generator spraying layer 5, the hydrogenperoxide steam generator of spray is commercially available hydrogenperoxide steam generator dilution gained, its concentration is below 27.5wt%, the spray flux of monolayer hydrogenperoxide steam generator spraying layer adjusts according to its concentration and flue gas flow and concentration, thus the oxidizing sulfur dioxide in flue gas generates sulphuric acid, sulphuric acid deposits in acid solution sedimentation basin;
(2) process through step (1) and do not risen to by the flue gas of hydrogenperoxide steam generator and be filled with in the fixing bed 2 of activated carbon and be tightly held by activated carbon, catalyzed oxidation reaction generates sulfur trioxide, sulfur trioxide generates sulphuric acid deposit in acid solution sedimentation basin with mix containing the dilute sulfuric acid that hydrogen peroxide, concentration are below 52.2wt% of ejection in dilute sulfuric acid spraying layer 3, and monolayer dilute sulfuric acid spraying layer (3) spray flux adjusts according to actual production;
(3) sulphuric acid in acid solution sedimentation basin that deposits to step (1) and (2) obtained enters in regenerated reactor by pump 13 and valve 14, and finished product acid tank 12 is arrived in finally storage.
In described step (1), the sulfur dioxide in flue gas content of smelting system is 50000mg/m3��800000mg/m3, the flow of the flue gas controlling smelting system is 50000��200000m3/h.
The reaction principle of the present invention is as follows:
1. react in hydrogenperoxide steam generator spray-absorption section:
H2O2+SO2��H2SO4
H in hydrogenperoxide steam generator2O2With the SO in flue gas2Reaction generates H2SO4, thus reaching the process of sulfur dioxide.
2. the reaction in the fixed bed of activated carbon it is filled with:
SO2(g)��SO2*
O2(g)��O2*
H2O(g)��H2O*
SO2*+O2*��SO3*
SO3*+H2O*��H2SO4*
Representative ADSORPTION STATE containing * in formula.
As SO in the flue gas of smelting system2When being arrived on activated carbon surface by physical absorption, owing to activated carbon surface has catalytic action, can SO2It is oxidized to SO3, and H will be become when running into the water in dilute sulfuric acid2SO4, thus being beneficial to this adsorption reaction continuous print to remove SO2. The sulphuric acid that catalytic reaction generates is enriched in the charcoal datum hole gap of activated carbon, flushes out sulphuric acid with regenerated liquid after the sulphuric acid in hole after desulfurization a period of time reaches capacity, and regenerating active carbon desulphurizing ability is restored.
The invention has the beneficial effects as follows: the present invention can effectively utilize the SO in flue gas during smelting2Produce H2SO4; The present invention can process the sulfur dioxide flue gas of variable concentrations, wide accommodation according to the concentration and the spray number of plies that regulate hydrogenperoxide steam generator; Activated carbon is renewable, absorbs liquid and recycles; Non-secondary pollution meets environmental protection development trend.
Accompanying drawing explanation
Fig. 1 is present invention process flow chart.
In figure: 1-flue gas during smelting entrance, 2-is filled with the fixing bed of activated carbon, 3-dilute sulfuric acid spraying layer, 4-offgas outlet, 5-hydrogenperoxide steam generator spraying layer, 6-hydrogen peroxide accumulator tank, 7-hydrogen peroxide surge-tank, 8-diluted acid circulating pump, 9-regenerated reactor I, 10-regenerated reactor II, 11-finished acid pump, 12-finished product acid tank, 13-pump, 14-valve.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Embodiment 1
As shown in Figure 1, this utilizes hydrogen peroxide and the activated carbon device to metallurgical off-gas acid-making, including desulfurization tower body, flue gas during smelting entrance 1, it is filled with the fixing bed 2 of activated carbon, dilute sulfuric acid spraying layer 3, offgas outlet 4, hydrogenperoxide steam generator spraying layer 5, hydrogen peroxide accumulator tank 6, hydrogen peroxide surge-tank 7, regenerated reactor, finished product acid tank 12, pump 13(includes diluted acid circulating pump 8, finished acid pump 11 and other pump) and valve 14, side, described desulfurization tower body bottom is provided with flue gas during smelting entrance 1, above flue gas during smelting entrance 1, in desulfurizing tower body, portion is provided with some layers of hydrogenperoxide steam generator spraying layer 5, the hydrogenperoxide steam generator spraying layer 5 of top is provided with the fixing bed 2 being filled with activated carbon, the fixing bed 2 being filled with activated carbon is provided with dilute sulfuric acid spraying layer 3, the fixing bed 2 and the dilute sulfuric acid spraying layer 3 that are filled with activated carbon are one group, this device is provided with two groups, desulfurization tower body top is provided with offgas outlet 4, hydrogenperoxide steam generator spraying layer 5 passes sequentially through pump 13 and valve 14 is sequentially connected with hydrogen peroxide accumulator tank 6, hydrogen peroxide surge-tank 7, dilute sulfuric acid spraying layer 3 is by pump 13(diluted acid circulating pump 8) and valve 14 connect the acid solution sedimentation basin top in desulfurization tower body, by pump 13(finished acid pump 11 bottom acid solution sedimentation basin) and valve 14 be sequentially connected with regenerated reactor and finished product acid tank 12.The fixing bed 2 being wherein filled with activated carbon adopts dual bed.
This utilizes hydrogen peroxide and the activated carbon device application process to metallurgical off-gas acid-making, and it specifically comprises the following steps that
(1) first the flue gas removing dust purification heat exchange of smelting system being cooled to temperature is less than 85 DEG C, then enter into desulfurization tower body from flue gas during smelting entrance 1, hydrogenperoxide steam generator spraying layer 5 sprays out the hydrogenperoxide steam generator that concentration is 3wt%, the spray flux controlling monolayer hydrogenperoxide steam generator spraying layer is 120m3/h, thus the oxidizing sulfur dioxide in flue gas generates sulphuric acid, sulphuric acid deposits in acid solution sedimentation basin; Wherein the sulfur dioxide in flue gas content of smelting system is 200000mg/m3, the flow of the flue gas controlling smelting system is 100000m3/ h; 99.6% is reached through this section of sulfur dioxide treatment amount;
(2) process through step (1) and do not risen to by the flue gas of hydrogenperoxide steam generator and be filled with in the fixing bed 2 of activated carbon and be tightly held by activated carbon, catalyzed oxidation reaction generates sulfur trioxide, sulfur trioxide and the generating sulphuric acid containing dilute sulfuric acid (connecting dilute sulfuric acid spraying layer 3 from acid solution sedimentation basin top by diluted acid circulating pump 8 containing the hydrogen peroxide dilute sulfuric acid) mixing that hydrogen peroxide, concentration are 8.1wt% and deposit to acid solution sedimentation basin of ejection in dilute sulfuric acid spraying layer 3, wherein controlling monolayer dilute sulfuric acid spraying layer 3 spray flux is 30m3/h; The desulfurization degree making this part reaches 80%, SO in tail gas after desulfurization2Concentration is 160mg/m3, lower than national standard 400mg/m3;
(3) sulphuric acid in acid solution sedimentation basin that deposits to step (1) and (2) obtained is entered in regenerated reactor (effect of regenerated reactor is the sulphuric acid recycling generation, improves sulfuric acid concentration) by pump 13 and valve 14, and finished product acid tank 12 is arrived in finally storage.
Embodiment 2
This utilizes hydrogen peroxide and the activated carbon device to metallurgical off-gas acid-making, including desulfurization tower body, flue gas during smelting entrance 1, it is filled with the fixing bed 2 of activated carbon, dilute sulfuric acid spraying layer 3, offgas outlet 4, hydrogenperoxide steam generator spraying layer 5, hydrogen peroxide accumulator tank 6, hydrogen peroxide surge-tank 7, regenerated reactor, finished product acid tank 12, pump 13 and valve 14, side, described desulfurization tower body bottom is provided with flue gas during smelting entrance 1, above flue gas during smelting entrance 1, in desulfurizing tower body, portion is provided with some layers of hydrogenperoxide steam generator spraying layer 5, the hydrogenperoxide steam generator spraying layer 5 of top is provided with the fixing bed 2 being filled with activated carbon, the fixing bed 2 being filled with activated carbon is provided with dilute sulfuric acid spraying layer 3, the fixing bed 2 and the dilute sulfuric acid spraying layer 3 that are filled with activated carbon are one group, concrete group number is according to circumstances determined, desulfurization tower body top is provided with offgas outlet 4, hydrogenperoxide steam generator spraying layer 5 passes sequentially through pump 13 and valve 14 is sequentially connected with hydrogen peroxide accumulator tank 6, hydrogen peroxide surge-tank 7, dilute sulfuric acid spraying layer 3 connects the acid solution sedimentation basin top in desulfurization tower body by pump 13 and valve 14, it is sequentially connected with regenerated reactor and finished product acid tank 12 by pump 13 and valve 14 bottom acid solution sedimentation basin.
This utilizes hydrogen peroxide and the activated carbon device application process to metallurgical off-gas acid-making, and it specifically comprises the following steps that
(1) first the flue gas removing dust purification heat exchange of smelting system being cooled to temperature is less than 85 DEG C, then enter into desulfurization tower body from flue gas during smelting entrance 1, hydrogenperoxide steam generator spraying layer 5 sprays out the hydrogenperoxide steam generator that concentration is 7wt%, the spray flux controlling monolayer hydrogenperoxide steam generator spraying layer is 200m3/h, thus the oxidizing sulfur dioxide in flue gas generates sulphuric acid, sulphuric acid deposits in acid solution sedimentation basin;Wherein the sulfur dioxide in flue gas content of smelting system is 800000mg/m3, the flow of the flue gas controlling smelting system is 200000m3/h; 99.7% is reached through this section of sulfur dioxide treatment amount;
(2) process through step (1) and do not risen to by the flue gas of hydrogenperoxide steam generator and be filled with in the fixing bed 2 of activated carbon and be tightly held by activated carbon, catalyzed oxidation reaction generates sulfur trioxide, sulfur trioxide and the mix generation sulphuric acid containing the dilute sulfuric acid that hydrogen peroxide, concentration are 17.7wt% and deposit in acid solution sedimentation basin of ejection in dilute sulfuric acid spraying layer 3, wherein control monolayer dilute sulfuric acid spraying layer 3 spray flux is 35m3/h; The desulfurization degree making this part reaches 90%, SO in tail gas after desulfurization2Concentration is 320mg/m3, lower than national standard 400mg/m3;
(3) sulphuric acid in acid solution sedimentation basin that deposits to step (1) and (2) obtained is entered in regenerated reactor (effect of regenerated reactor is the sulphuric acid recycling generation, improves sulfuric acid concentration) by pump 13 and valve 14, and finished product acid tank 12 is arrived in finally storage.
Embodiment 3
This utilizes hydrogen peroxide and the activated carbon device to metallurgical off-gas acid-making, including desulfurization tower body, flue gas during smelting entrance 1, it is filled with the fixing bed 2 of activated carbon, dilute sulfuric acid spraying layer 3, offgas outlet 4, hydrogenperoxide steam generator spraying layer 5, hydrogen peroxide accumulator tank 6, hydrogen peroxide surge-tank 7, regenerated reactor, finished product acid tank 12, pump 13 and valve 14, side, described desulfurization tower body bottom is provided with flue gas during smelting entrance 1, above flue gas during smelting entrance 1, in desulfurizing tower body, portion is provided with some layers of hydrogenperoxide steam generator spraying layer 5, the hydrogenperoxide steam generator spraying layer 5 of top is provided with the fixing bed 2 being filled with activated carbon, the fixing bed 2 being filled with activated carbon is provided with dilute sulfuric acid spraying layer 3, the fixing bed 2 and the dilute sulfuric acid spraying layer 3 that are filled with activated carbon are one group, concrete group number is according to circumstances determined, desulfurization tower body top is provided with offgas outlet 4, hydrogenperoxide steam generator spraying layer 5 passes sequentially through pump 13 and valve 14 is sequentially connected with hydrogen peroxide accumulator tank 6, hydrogen peroxide surge-tank 7, dilute sulfuric acid spraying layer 3 connects the acid solution sedimentation basin top in desulfurization tower body by pump 13 and valve 14, it is sequentially connected with regenerated reactor and finished product acid tank 12 by pump 13 and valve 14 bottom acid solution sedimentation basin.
This utilizes hydrogen peroxide and the activated carbon device application process to metallurgical off-gas acid-making, and it specifically comprises the following steps that
(1) first the flue gas removing dust purification heat exchange of smelting system being cooled to temperature is less than 85 DEG C, then enter into desulfurization tower body from flue gas during smelting entrance 1, hydrogenperoxide steam generator spraying layer 5 sprays out the hydrogenperoxide steam generator that concentration is 27.5wt%, the spray flux controlling monolayer hydrogenperoxide steam generator spraying layer is 100m3/h, thus the oxidizing sulfur dioxide in flue gas generates sulphuric acid, sulphuric acid deposits in acid solution sedimentation basin; Wherein the sulfur dioxide in flue gas content of smelting system is 50000mg/m3, the flow of the flue gas controlling smelting system is 50000m3/h; 99.7% is reached through this section of sulfur dioxide treatment amount;
(2) process through step (1) and do not risen to by the flue gas of hydrogenperoxide steam generator and be filled with in the fixing bed 2 of activated carbon and be tightly held by activated carbon, catalyzed oxidation reaction generates sulfur trioxide, sulfur trioxide and the mix generation sulphuric acid containing the dilute sulfuric acid that hydrogen peroxide, concentration are 52.2wt% and deposit in acid solution sedimentation basin of ejection in dilute sulfuric acid spraying layer 3, wherein control monolayer dilute sulfuric acid spraying layer 3 spray flux is 20m3/h;The desulfurization degree making this part reaches 70%, SO in tail gas after desulfurization2Concentration is 120mg/m3, lower than national standard 400mg/m3;
(3) sulphuric acid in acid solution sedimentation basin that deposits to step (1) and (2) obtained is entered in regenerated reactor (effect of regenerated reactor is the sulphuric acid recycling generation, improves sulfuric acid concentration) by pump 13 and valve 14, and finished product acid tank 12 is arrived in finally storage.
Above in association with accompanying drawing, the specific embodiment of the present invention is explained in detail, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, it is also possible to make a variety of changes under the premise without departing from present inventive concept.
Claims (4)
1. one kind utilizes hydrogen peroxide and the activated carbon device to metallurgical off-gas acid-making, it is characterized in that: include desulfurization tower body, flue gas during smelting entrance (1), it is filled with the fixing bed (2) of activated carbon, dilute sulfuric acid spraying layer (3), offgas outlet (4), hydrogenperoxide steam generator spraying layer (5), hydrogen peroxide accumulator tank (6), hydrogen peroxide surge-tank (7), regenerated reactor, finished product acid tank (12), pump (13) and valve (14), side, described desulfurization tower body bottom is provided with flue gas during smelting entrance (1), in the desulfurizing tower body of flue gas during smelting entrance (1) top, portion is provided with some layers of hydrogenperoxide steam generator spraying layer (5), the hydrogenperoxide steam generator spraying layer (5) of top is provided with the fixing bed (2) being filled with activated carbon, the fixing bed (2) being filled with activated carbon is provided with dilute sulfuric acid spraying layer (3), the fixing bed (2) and the dilute sulfuric acid spraying layer (3) that are filled with activated carbon are one group, concrete group number is according to circumstances determined, desulfurization tower body top is provided with offgas outlet (4), hydrogenperoxide steam generator spraying layer (5) passes sequentially through pump (13) and valve (14) is sequentially connected with hydrogen peroxide accumulator tank (6), hydrogen peroxide surge-tank (7), dilute sulfuric acid spraying layer (3) connects the acid solution sedimentation basin top in desulfurization tower body by pump (13) and valve (14), it is sequentially connected with regenerated reactor and finished product acid tank (12) by pump (13) and valve (14) bottom acid solution sedimentation basin.
2. hydrogen peroxide and the activated carbon device to metallurgical off-gas acid-making of utilizing according to claim 1, it is characterised in that: described in be filled with the fixing bed (2) of activated carbon and adopt dual bed.
3. hydrogen peroxide and the activated carbon device application process to metallurgical off-gas acid-making of utilizing according to claim 1 and 2, it is characterised in that specifically comprise the following steps that
(1) first the flue gas removing dust purification heat exchange of smelting system being cooled to temperature is less than 85 DEG C, then enter into desulfurization tower body from flue gas during smelting entrance (1), in hydrogenperoxide steam generator spraying layer (5), the hydrogenperoxide steam generator of spray is commercially available hydrogenperoxide steam generator dilution gained, its concentration is below 27.5wt%, the spray flux of monolayer hydrogenperoxide steam generator spraying layer adjusts according to its concentration and flue gas flow and concentration, thus the oxidizing sulfur dioxide in flue gas generates sulphuric acid, sulphuric acid deposits in acid solution sedimentation basin;
(2) process through step (1) and do not risen to by the sulfur dioxide in flue gas of the oxidation of hydrogenperoxide steam generator and be filled with in the fixing bed (2) of activated carbon and be tightly held by activated carbon, catalyzed oxidation reaction generates sulfur trioxide, in sulfur trioxide and dilute sulfuric acid spraying layer (3), mix containing the dilute sulfuric acid that hydrogen peroxide, concentration are below 52.2wt% of ejection generates sulphuric acid and deposits in acid solution sedimentation basin, and monolayer dilute sulfuric acid spraying layer (3) spray flux adjusts according to actual production;
(3) sulphuric acid in acid solution sedimentation basin that deposits to step (1) and (2) obtained enters in regenerated reactor by pump (13) and valve (14), and finished product acid tank (12) is arrived in finally storage.
4. hydrogen peroxide and the activated carbon device application process to metallurgical off-gas acid-making of utilizing according to claim 3, it is characterised in that: in described step (1), the sulfur dioxide in flue gas content of smelting system is 50000mg/m3��800000mg/m3, the flow of the flue gas controlling smelting system is 50000��200000m3/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610126435.XA CN105645364A (en) | 2016-03-07 | 2016-03-07 | Device and method using hydrogen peroxide, activated carbon and smelting exhaust gas to produce acid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610126435.XA CN105645364A (en) | 2016-03-07 | 2016-03-07 | Device and method using hydrogen peroxide, activated carbon and smelting exhaust gas to produce acid |
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|---|---|
| CN105645364A true CN105645364A (en) | 2016-06-08 |
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| CN201610126435.XA Pending CN105645364A (en) | 2016-03-07 | 2016-03-07 | Device and method using hydrogen peroxide, activated carbon and smelting exhaust gas to produce acid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113120871A (en) * | 2020-01-16 | 2021-07-16 | 吉林紫金铜业有限公司 | Method for heating desulfurization nitrogen in acid preparation by smelting flue gas |
| CN113148962A (en) * | 2021-01-19 | 2021-07-23 | 昆明理工大学 | Device and method for preparing acid from smelting flue gas by using hydrogen peroxide and activated carbon |
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| CN101274752A (en) * | 2008-04-07 | 2008-10-01 | 北京科技大学 | Separation and utilization process for sulfuric dioxide and carbon dioxide in stack gas |
| CN101695622A (en) * | 2001-04-04 | 2010-04-21 | 大阪瓦斯株式会社 | Desulfurization apparatus and desulfurization method |
| CN105363330A (en) * | 2014-08-31 | 2016-03-02 | 天津渤大硫酸工业有限公司 | Sulfuric acid tail gas desulphurization device |
| CN205575642U (en) * | 2016-03-07 | 2016-09-14 | 昆明理工大学 | Utilize hydrogen peroxide and device of active carbon to smelting flue gas relieving haperacidity |
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| JPS5539211A (en) * | 1978-09-10 | 1980-03-19 | Mitsubishi Heavy Ind Ltd | Deodorizing apparatus for malodorous gas |
| CN101695622A (en) * | 2001-04-04 | 2010-04-21 | 大阪瓦斯株式会社 | Desulfurization apparatus and desulfurization method |
| CN101274752A (en) * | 2008-04-07 | 2008-10-01 | 北京科技大学 | Separation and utilization process for sulfuric dioxide and carbon dioxide in stack gas |
| CN105363330A (en) * | 2014-08-31 | 2016-03-02 | 天津渤大硫酸工业有限公司 | Sulfuric acid tail gas desulphurization device |
| CN205575642U (en) * | 2016-03-07 | 2016-09-14 | 昆明理工大学 | Utilize hydrogen peroxide and device of active carbon to smelting flue gas relieving haperacidity |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113120871A (en) * | 2020-01-16 | 2021-07-16 | 吉林紫金铜业有限公司 | Method for heating desulfurization nitrogen in acid preparation by smelting flue gas |
| CN113148962A (en) * | 2021-01-19 | 2021-07-23 | 昆明理工大学 | Device and method for preparing acid from smelting flue gas by using hydrogen peroxide and activated carbon |
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