CN211216093U - Device for removing sulfur dioxide in smelting flue gas and preparing acid by using zinc oxide - Google Patents
Device for removing sulfur dioxide in smelting flue gas and preparing acid by using zinc oxide Download PDFInfo
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- CN211216093U CN211216093U CN201922134502.4U CN201922134502U CN211216093U CN 211216093 U CN211216093 U CN 211216093U CN 201922134502 U CN201922134502 U CN 201922134502U CN 211216093 U CN211216093 U CN 211216093U
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Abstract
The utility model discloses a device for removing sulfur dioxide in smelting flue gas and preparing acid by zinc oxide, which comprises a first dust-removing desulfurizing tower and a second desulfurizing purification tower; a high-energy turbulent flow washing section, a primary demisting dust remover, a gas-liquid bidirectional flow dividing device and a high-energy turbulent flow suction section are sequentially arranged in the first dedusting and desulfurizing tower from bottom to top; and a high-energy turbulence secondary suction section, a secondary demisting dust remover, a gas-liquid bidirectional flow dividing device, a high-energy washer, a high-energy turbulence water washing section and a tertiary demisting dust remover are sequentially arranged in the second desulfurization purification tower from bottom to top. The utility model discloses can agree with lead zinc enterprise's production technology completely to lead zinc smelting system intermediate product is the desulfurizer, but desulfurization product recycle, changing waste into valuables both can solve the desulfurization product of enterprise and deal with the problem, can reduce running cost again.
Description
Technical Field
The utility model relates to an environmental protection treatment technology field, concretely relates to device of sulfur dioxide and system acid in flue gas is smelted in zinc oxide desorption.
Background
Sulfur dioxide is an important pollutant for destroying the living environment of human beings, and a large amount of SO is discharged in the combustion process of sulfur-containing fuel or the roasting process of metal minerals in industrial production2Flue gas. SO in flue gas2Discharged into the atmosphere, dissolved in water to generate sulfurous acid, and the sulfurous acid is further oxidized in the presence of PM2.5, so that the wastewater is treatedSulfuric acid is rapidly and efficiently generated. The sulfuric acid mist or sulfate aerosol formed is a precursor for environmental acidification.
Flue gas SO adopted in China at present2The more mature treatment processes include calcium method (including semidry method and limestone-gypsum wet method), ammonia method, double alkali method, etc. Various processes have advantages and disadvantages and specific industrial applicability, for example, the calcium method process is stable, but the desulfurization product gypsum is difficult to recycle, and the method is suitable for large-air machine sets or building material industry; the ammonia desulphurization efficiency is high, but the operation cost is high, so that the method is suitable for the chemical industry or enterprises with surplus waste ammonia water; the double-alkali method is suitable for a small-gas-quantity unit, and the running cost is high due to the loss of sodium alkali. Various desulfurization processes have specific industrial applicability, and the lead-zinc smelting industry is very necessary to adopt a flue gas desulfurization technology suitable for a lead-zinc production process.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a device of sulfur dioxide and system acid in zinc oxide desorption smelting flue gas can agree with lead zinc enterprise's production technology completely to the desulfurizer is lead zinc smelting system intermediate product, but desulfurization product recycle, changing waste into valuables both can solve the desulfurization product of enterprise and deal with the problem, can reduce running cost again.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a device for removing sulfur dioxide in smelting flue gas and preparing acid by zinc oxide comprises a first dust removal desulfurization tower and a second desulfurization purification tower; a high-energy turbulence washing section, a primary demisting dust remover and a high-energy turbulence suction section are sequentially arranged in the first dedusting and desulfurizing tower from bottom to top; a high-energy turbulent flow secondary suction section, a secondary demisting and dust removing device, a high-energy washer, a high-energy turbulent flow water washing section and a tertiary demisting and dust removing device are sequentially arranged in the second desulfurization purification tower from bottom to top; the gas inlet of the first dust-removing desulfurization tower is positioned below the high-energy turbulent flow washing section, and the gas outlet of the first dust-removing desulfurization tower is positioned above the high-energy turbulent flow first suction section and communicated with the gas inlet of the second desulfurization purification tower; the gas inlet of the second desulfurization purification tower is positioned below the high-energy turbulent flow secondary suction section, and the gas outlet of the second desulfurization purification tower is positioned above the three-stage demisting dust remover; the high-energy turbulent flow washing section comprises at least one layer of spray head which is communicated with a first-stage washing liquid circulating groove through a washing pump, and washing liquid is loaded in the first-stage washing liquid circulating groove; the high-energy turbulence first suction section comprises at least one layer of spray heads which are communicated with a first-stage spray liquid circulating groove through a first-stage absorption pump, and spray liquid is loaded in the first-stage spray liquid circulating groove; the high-energy turbulent flow secondary suction section comprises at least one layer of spray heads which are communicated with a secondary spray liquid circulating groove through a secondary absorption pump, and spray liquid is loaded in the secondary spray liquid circulating groove; the high-energy turbulent water washing section comprises at least one layer of spray head which is communicated with a water washing circulating groove through a purifying pump, and clear water is loaded in the water washing circulating groove.
Further, the first-stage washing liquid circulating tank is arranged at the bottom in the first dedusting and desulfurizing tower.
Furthermore, a first gas-liquid bidirectional flow dividing device is arranged between the high-energy turbulence suction section and the primary demisting dust remover and is communicated with a liquid inlet of the primary spray liquid circulating tank.
Further, the second-stage spray liquid circulating tank is arranged at the bottom in the second desulfurization purification tower.
And a second gas-liquid bidirectional flow dividing device is arranged between the high-energy washer and the second-stage demisting dust remover and is communicated with a liquid inlet of the water washing circulation tank.
Furthermore, the liquid coverage rate of the spraying section of the high-energy turbulence washing section, the high-energy turbulence first-suction section, the high-energy turbulence second-suction section and the high-energy turbulence water washing section is not less than 300%.
Furthermore, the first-stage washing liquid circulating tank and the second-stage spraying liquid circulating tank are respectively provided with a side stirrer, and a double-layer stirrer is arranged in the first-stage spraying liquid circulating tank.
The beneficial effects of the utility model reside in that:
1. in the device, the primary demisting dust remover can ensure that the high-dust high fluorine-chlorine solution after the flue gas is washed and cooled is not carried into a subsequent desulfurization system; the secondary demisting dust remover can ensure that the flue gas after desulfurization does not carry large liquid drops, and control the soluble salt and dust carried by the discharged flue gas; the three-level demisting dust remover can ensure that the flue gas at the final cleaning and purifying section does not carry liquid drops, and ensure that the final discharged flue gas liquid drops and the dust concentration reach the standard.
2. The utility model discloses the device divide into different functional system, specifically divide into washing cooling (one-level washing liquid circulation groove, high energy torrent washing section, washer pump and one-level defogging dust remover), SO2First-stage removal (high-energy turbulence first-stage absorption section, first-stage spray liquid circulating tank and first-stage absorption pump) and SO2The two-stage removal (high-energy turbulence secondary absorption section, secondary spray liquid circulation tank, secondary absorption pump and secondary demisting dust remover), cleaning and purification (high-efficiency washer, high-energy turbulence washing section, washing circulation tank, purification pump and three-stage high-efficiency demister) are carried out, the four functional sections are subjected to tank separation treatment according to functions, materials are not confused, and the highest treatment efficiency of each functional section is ensured. Each functional system controls different process materials, and the process materials are independent and operate in a linkage mode: controlling the fluorine-chlorine concentration of the dust of the washing liquid by the washing cooling liquid; controlling different pH values and different absorbent components by the absorption liquid; the cleaning and purifying liquid controls the concentration of solid dust and salt.
3. High concentration SO treatment Using the apparatus of this example2The smelting flue gas has high efficiency and can be arranged at the flue gas inlet SO2The concentration is not less than 10000mg/Nm3While, the outlet SO2Concentration of not higher than 50mg/Nm3And realizes the removal of high-concentration SO in the flue gas2Meanwhile, the occupied area is small, and the investment is saved.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus in embodiment 1 of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, and it should be noted that the present embodiment is based on the technical solution, and the detailed embodiments and the specific operation processes are provided, but the protection scope of the present invention is not limited to the present embodiment.
Example 1
The embodiment provides a device for removing sulfur dioxide in smelting flue gas and producing acid by using zinc oxide, which comprises a first dust removal desulfurization tower 1 and a second desulfurization purification tower 10, as shown in figure 1; a high-energy turbulence washing section 3, a primary demisting and dedusting device 5, a first gas-liquid bidirectional flow dividing device 6 and a high-energy turbulence suction section 7 are sequentially arranged in the first dedusting and desulfurizing tower 1 from bottom to top; a high-energy turbulent flow secondary suction section 12, a secondary demisting dust remover 14, a second gas-liquid bidirectional flow dividing device 15, a high-energy washer 16, a high-energy turbulent flow water washing section 17 and a tertiary demisting dust remover 20 are sequentially arranged in the second desulfurization purification tower 10 from bottom to top; the gas inlet of the first dust-removing and desulfurizing tower 1 is positioned below the high-energy turbulence washing section 3, and the gas outlet thereof is positioned above the high-energy turbulence primary absorption section 7 and communicated with the gas inlet of the second desulfurizing and purifying tower 10; the gas inlet of the second desulfurization and purification tower 10 is positioned below the high-energy turbulent secondary absorption section 12, and the gas outlet thereof is positioned above the three-stage demister 20; the high-energy turbulent flow washing section 3 comprises at least one layer of spray head which is communicated with a first-stage washing liquid circulating tank 2 through a washing pump 4, and washing liquid is loaded in the first-stage washing liquid circulating tank 2; the high-energy turbulence first suction section 7 comprises at least one layer of spray heads which are communicated with a first-stage spray liquid circulating tank 8 through a first-stage absorption pump 9, and spray liquid is loaded in the first-stage spray liquid circulating tank 8; the high-energy turbulence secondary absorption section 12 comprises at least one layer of spray heads which are communicated with a secondary spray liquid circulation tank 11 through a secondary absorption pump 13, and spray liquid is loaded in the secondary spray liquid circulation tank 11; the high-energy turbulent water washing section 17 comprises at least one layer of spray heads which are communicated with a water washing circulation tank 18 through a purification pump 19, and the water washing circulation tank 18 is filled with clean water.
Further, the primary washing liquid circulating tank 2 is arranged at the bottom in the first dust-removing and desulfurizing tower 1.
Furthermore, a first gas-liquid bidirectional flow dividing device 6 is arranged between the high-energy turbulence suction section 7 and the primary demisting and dedusting device 5, and the first gas-liquid bidirectional flow dividing device 6 is communicated with a liquid inlet of the primary spray liquid circulating tank 8.
Further, the secondary spray liquid circulation tank 11 is arranged at the bottom inside the second desulfurization purification tower 10.
Further, a second gas-liquid bidirectional flow dividing device 15 is arranged between the high-energy scrubber 16 and the secondary demister 14, and the second gas-liquid bidirectional flow dividing device 15 is communicated with a liquid inlet of the water washing circulation tank 18.
Furthermore, the high-energy turbulence washing section 3, the high-energy turbulence first-suction section 7, the high-energy turbulence second-suction section 12 and the high-energy turbulence water washing section 17 all adopt an empty tower spraying structure and respectively comprise a liquid inlet pipe, and spray heads are distributed on the liquid inlet pipe; the liquid inlet main pipe of the high-energy turbulent flow washing section 3 is communicated with the primary washing liquid circulating tank 2 through a washing pump 4; the liquid inlet main pipe of the high-energy turbulence suction section 7 is communicated with a primary spray liquid circulating groove 8 through a primary absorption pump 9; a main liquid inlet pipe of the high-energy turbulent flow secondary suction section 12 is communicated with a spray head of the secondary spray liquid circulation groove 11 through a secondary absorption pump 13; the liquid inlet pipe of the high-energy turbulent water washing section 17 is communicated with a water washing circulation tank 18 through a purifying pump 19.
Further, the liquid coverage rate of the spraying section of the high-energy turbulence washing section, the high-energy turbulence first-suction section, the high-energy turbulence second-suction section and the high-energy turbulence water washing section 17 is not less than 300%. Ensuring high-efficiency washing, dust removal and desulfurization efficiency.
Furthermore, the first-stage washing liquid circulating tank 2 and the second-stage spraying liquid circulating tank 11 are respectively provided with a side stirrer 21, and a double-layer stirrer 22 is arranged in the first-stage spraying liquid circulating tank 8. By intensive stirring, it is ensured that no clogging occurs.
In the device, the primary demisting dust remover can ensure that the high-dust high fluorine-chlorine solution after the flue gas is washed and cooled is not brought into a subsequent desulfurization system; the secondary demisting dust remover can ensure that the flue gas after desulfurization does not carry large liquid drops, and control the soluble salt and dust carried by the discharged flue gas; the three-level demisting dust remover can ensure that the flue gas at the final cleaning and purifying section does not carry liquid drops, and ensure that the final discharged flue gas liquid drops and the dust concentration reach the standard. Furthermore, the device is divided into different functional systems, specifically into a washing cooling system (a first-stage washing liquid circulation tank, a high-energy turbulence washing section, a washing pump and a first-stage demisting dust remover), and an SO system2First-stage removal (high-energy turbulence first-stage absorption section, first-stage spray liquid circulating tank and first-stage absorption pump) and SO2Two stage removal (high energy turbulence)Two sections, second grade spray liquid circulation groove, second grade absorption pump and second grade defogging dust remover), four functional sections of cleaning purification (high-efficient scrubber, high energy torrent washing section, washing circulation groove, scavenging pump, tertiary high-efficient defroster), four functional sections divide the groove to handle according to the function, the material does not obscure, ensures that each functional section treatment effeciency is highest. Each functional system controls different process materials, and the process materials are independent and operate in a linkage mode: controlling the fluorine-chlorine concentration of the dust of the washing liquid by the washing cooling liquid; controlling different pH values and different absorbent components by the absorption liquid; the cleaning and purifying liquid controls the concentration of solid dust and salt.
High concentration SO treatment Using the apparatus of this example2The smelting flue gas has high efficiency and can be arranged at the flue gas inlet SO2The concentration is not less than 10000mg/Nm3While, the outlet SO2Concentration of not higher than 50mg/Nm3And realizes the removal of high-concentration SO in the flue gas2Meanwhile, the occupied area is small, and the investment is saved.
Example 2
This example provides a method of using the apparatus of example 1, comprising the steps of:
the flue gas (containing dust and high-concentration SO)2The temperature is not lower than 100 ℃) is introduced into a gas inlet of the first dust-removing and desulfurizing tower 1 through a booster fan, the washing liquid is introduced into each layer of spray heads of the high-energy turbulent washing section 3 from the first-stage washing liquid circulating tank 2 through the washing pump 4 and sprayed out from the spray heads to be in reverse spray contact with the flue gas, and the flue gas is dedusted and cooled by the washing liquid to become saturated wet flue gas;
the saturated wet flue gas is subjected to primary demisting and dedusting device 5 to remove large liquid drops and dust; spraying liquid is introduced into each layer of spray heads of the high-energy turbulence suction section 7 from the primary spraying liquid circulating tank 8 through the primary absorption pump 9 and is sprayed out of the spray heads, and SO in the spraying liquid is removed by reversely spraying and contacting with flue gas2(the specific number of layers in a suction stage of high energy turbulence is dependent on the inlet SO2Concentration and outlet SO2Emission requirement determination);
removal of SO2The flue gas is output from the gas outlet of the first dust-removing and desulfurizing tower 1 and enters the second desulfurizing and purifying tower from the gas inlet of the second desulfurizing and purifying tower 10, and the spraying liquid circulates from the second-stage spraying liquid through a second-stage absorption pump 13The annular groove 11 introduces each layer of spray heads of the high-energy turbulence secondary absorption section 12 and sprays from the spray heads, and the spray heads are in reverse spray contact with flue gas to realize secondary SO removal2；
By removing SO again2The fog drops of the flue gas are removed by a secondary demisting dust remover 14; clean water is introduced into each layer of spray heads of the high-energy turbulent water washing section 17 from the water washing circulating tank 18 through the purifying pump 19 and is sprayed out from each layer of spray heads, flue gas is firstly washed and purified through the high-efficiency washer 16, and then is reversely contacted with and sprayed with the sprayed clean water in the high-energy turbulent water washing section 17 to realize secondary purification; the flue gas is washed and purified, and then is treated by the three-stage demisting and dedusting device 20 to remove fog drops, and finally the flue gas which meets the pollutant emission requirement is discharged to the outside of the second desulfurization and purification tower.
The cleaning solution is clear water, and is used for cooling, dedusting and removing fluorine and chlorine ions from the flue gas; the first-stage washing liquid circulating tank is arranged at the bottom of the first dedusting and desulfurizing tower, and washing liquid and flue gas are reversely sprayed and contacted and then fall back into the first-stage washing liquid circulating tank; when the content of dust and fluorine and chlorine in the washing liquid exceeds the set range, the washing liquid is discharged to prevent high-dust high fluorine and chlorine from entering the subsequent desulfurization process. Furthermore, the set range is that the dust concentration is less than or equal to 1g/L, and the fluorine-containing chlorine is less than or equal to 5 g/L.
It should be noted that the second-stage spray liquid circulation tank is arranged at the bottom of the second desulfurization purification tower, and the spray liquid and the flue gas reversely spray and contact and then fall back into the second-stage spray liquid circulation tank.
It is noted that in the first dust removal and desulfurization tower, the spray liquid in the first high-energy turbulence suction section and the flue gas are in reverse spray contact, fall onto the first gas-liquid bidirectional flow dividing device and are collected back to the first-stage spray liquid circulation tank; in the second desulfurization purification tower, the clean water of the high-energy scrubber and the high-energy turbulent water washing section washes and purifies the flue gas, and then the flue gas falls onto the second gas-liquid bidirectional flow dividing device to be collected into the water washing purification tank. Therefore, the spray liquid of different upper and lower functional sections in the tower can be separated without confusion, and the treatment requirement of each functional section in the tower for the flue gas is ensured.
The pH value of the spray liquid in the primary spray liquid circulating tank is 3.5-5.0, the spray liquid comprises zinc sulfite and zinc oxide, the mass concentration of the zinc sulfite is more than or equal to 15%, and the mass concentration of the zinc oxide is less than or equal to 5%.
The pH value of the spray liquid in the secondary spray liquid circulating tank is 4.0-6.5, wherein the spray liquid comprises zinc oxide and zinc sulfite, the mass concentration of the zinc oxide is more than or equal to 15%, and the mass concentration of the zinc sulfite is less than or equal to 5%.
The pH value of clear water in the water washing circulating tank is 6.5-7.0, the concentration of particulate matters in the clear water is less than or equal to 0.5g/L, and the Zn content is less than or equal to 10 g/L.
It should be noted that the first-stage spray liquid circulating tank and the second-stage spray liquid circulating tank absorb SO2Pumping out the solid-liquid mixture of zinc oxide, zinc sulfite and zinc sulfate, separating, wherein the zinc sulfite is decomposed by acid to obtain SO2Gas, zinc sulphate solution is electrolyzed.
In the method, the zinc oxide powder is an intermediate product of a lead-zinc smelting enterprise, the desulfurization product is zinc sulfite slag and zinc sulfate solution, the zinc sulfite slag is decomposed by waste electrolyte acid to obtain high-purity sulfur dioxide gas, the high-purity sulfur dioxide gas is sent to an acid preparation system, and the zinc sulfate solution can be used as an electrolytic zinc raw material of the enterprise, so that the resource recycling can be realized, and waste materials are changed into valuable.
Example 3
Flue gas 18000Nm of electric forging furnace of certain carbon plant3H, SO in flue gas2At a concentration of 7000-1000 mg/Nm3Designed according to 1000mg/Nm3Considering that the concentration of the particulate matters in the smoke is less than or equal to 250mg/Nm3The temperature of the discharged smoke is less than or equal to 190 ℃.
Diameter of first dust-removing desulfurizing tower
Washing pump Q100 m3H, the first-stage absorption pump Q is 150m3H; diameter of second desulfurization purifying tower
Diameter of first-stage spray liquid circulation groove
Water washing circulation tankDiameter of
Two-stage absorption pump Q150 m3H, 100m for the purge pump Q3/h。
Containing SO2After the high-temperature flue gas is treated in the first dedusting and desulfurizing tower, the temperature of the flue gas is reduced to 68 ℃, and the dust concentration in the flue gas is reduced to 20mg/Nm3SO in the interior of flue gas2The concentration is reduced to 2500mg/Nm3The content of the compound is less than the content of the compound; the flue gas after primary treatment enters a second desulfurization purification tower, and SO in the flue gas is absorbed by spray liquid2The concentration is reduced to 50mg/Nm3Then enters a high-efficiency washer and a high-energy turbulent water washing section at the upper part of the desulfurization purification tower, and SO in the flue gas2The concentration is controlled at 35mg/Nm3The content and the dust are controlled to be 10mg/Nm3And finally, after the large fog drops are removed by a three-stage demisting dust remover, the standard-reaching emission is achieved.
The embodiment realizes high desulfurization efficiency (more than or equal to 99 percent) and strong adaptability to flue gas load change. The liquid materials of the circulating liquid phase of each functional unit are mutually separated, the liquid materials of each functional unit control the concentration and the pH value of different components, and finally the SO is discharged from a discharge port2Low discharge concentration (less than or equal to 35 mg/Nm)3) Low concentration of particulate matter (less than or equal to 10 mg/Nm)3). The process core equipment combines a plurality of treatment processes, the equipment arrangement is compact, the occupied area is small, and the investment is saved.
Various corresponding changes and modifications can be made by those skilled in the art according to the above technical solutions and concepts, and all such changes and modifications should be included in the protection scope of the present invention.
Claims (7)
1. A device for removing sulfur dioxide in smelting flue gas and preparing acid by zinc oxide is characterized by comprising a first dust removal desulfurization tower and a second desulfurization purification tower; a high-energy turbulence washing section, a primary demisting dust remover and a high-energy turbulence suction section are sequentially arranged in the first dedusting and desulfurizing tower from bottom to top; a high-energy turbulent flow secondary suction section, a secondary demisting and dust removing device, a high-energy washer, a high-energy turbulent flow water washing section and a tertiary demisting and dust removing device are sequentially arranged in the second desulfurization purification tower from bottom to top; the gas inlet of the first dust-removing desulfurization tower is positioned below the high-energy turbulent flow washing section, and the gas outlet of the first dust-removing desulfurization tower is positioned above the high-energy turbulent flow first suction section and communicated with the gas inlet of the second desulfurization purification tower; the gas inlet of the second desulfurization purification tower is positioned below the high-energy turbulent flow secondary suction section, and the gas outlet of the second desulfurization purification tower is positioned above the three-stage demisting dust remover; the high-energy turbulent flow washing section comprises at least one layer of spray head which is communicated with a first-stage washing liquid circulating groove through a washing pump, and washing liquid is loaded in the first-stage washing liquid circulating groove; the high-energy turbulence first suction section comprises at least one layer of spray heads which are communicated with a first-stage spray liquid circulating groove through a first-stage absorption pump, and spray liquid is loaded in the first-stage spray liquid circulating groove; the high-energy turbulent flow secondary suction section comprises at least one layer of spray heads which are communicated with a secondary spray liquid circulating groove through a secondary absorption pump, and spray liquid is loaded in the secondary spray liquid circulating groove; the high-energy turbulent water washing section comprises at least one layer of spray head which is communicated with a water washing circulating groove through a purifying pump, and clear water is loaded in the water washing circulating groove.
2. The device for removing sulfur dioxide from smelting flue gas and producing acid by using zinc oxide according to claim 1, wherein the primary washing liquid circulating tank is arranged at the bottom in the first dedusting and desulfurizing tower.
3. The device for removing sulfur dioxide from smelting flue gas and producing acid by using zinc oxide according to claim 1, wherein a first gas-liquid bidirectional flow dividing device is arranged between the high-energy turbulent suction section and the primary demister-stage, and the first gas-liquid bidirectional flow dividing device is communicated with a liquid inlet of the primary-stage spray liquid circulation tank.
4. The device for removing sulfur dioxide from smelting flue gas and producing acid by using zinc oxide according to claim 1, wherein the secondary spray liquid circulating tank is arranged at the bottom in the second desulfurization purification tower.
5. The device for removing sulfur dioxide from smelting flue gas and producing acid by using zinc oxide according to claim 1, wherein a second gas-liquid bidirectional flow dividing device is arranged between the high-energy scrubber and the secondary demisting and dedusting device, and the second gas-liquid bidirectional flow dividing device is communicated with a liquid inlet of the water washing circulation tank.
6. The device for removing sulfur dioxide from smelting flue gas and producing acid by using zinc oxide according to claim 1, wherein the liquid coverage of the spraying section of the high-energy turbulent washing section, the high-energy turbulent first-suction section, the high-energy turbulent second-suction section and the high-energy turbulent water washing section is not less than 300%.
7. The device for removing sulfur dioxide from smelting flue gas and producing acid by using zinc oxide according to claim 1, wherein the first-stage washing liquid circulating tank and the second-stage spraying liquid circulating tank are respectively provided with a side stirrer, and a double-layer stirrer is arranged in the first-stage spraying liquid circulating tank.
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Address after: No. 86, Yuantong North Road, Wuhua District, Kunming, Yunnan 650021 Patentee after: Yunnan Keli environmental protection Co.,Ltd. Address before: 650031 No. 86 Yuantong North Road, Wuhua District, Yunnan, Kunming Patentee before: YUNNAN KEENLY NEW MATERIAL Co.,Ltd. |