CN104353344B - The method removing iron and steel sulfide in flue gas - Google Patents
The method removing iron and steel sulfide in flue gas Download PDFInfo
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- CN104353344B CN104353344B CN201410617741.4A CN201410617741A CN104353344B CN 104353344 B CN104353344 B CN 104353344B CN 201410617741 A CN201410617741 A CN 201410617741A CN 104353344 B CN104353344 B CN 104353344B
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- sulfur dioxide
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000003546 flue gas Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 43
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 55
- 229910052742 iron Inorganic materials 0.000 title claims description 23
- 229910000831 Steel Inorganic materials 0.000 title claims description 17
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 title claims description 17
- 239000010959 steel Substances 0.000 title claims description 17
- 238000005406 washing Methods 0.000 claims abstract description 87
- 238000001179 sorption measurement Methods 0.000 claims abstract description 82
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 68
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims abstract description 68
- 150000001875 compounds Chemical class 0.000 claims abstract description 43
- 239000003463 adsorbent Substances 0.000 claims abstract description 42
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 34
- 239000007789 gas Substances 0.000 claims abstract description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 31
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 239000001117 sulphuric acid Substances 0.000 claims abstract description 18
- 235000011149 sulphuric acid Nutrition 0.000 claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 16
- 238000002360 preparation method Methods 0.000 claims abstract description 16
- 238000000926 separation method Methods 0.000 claims abstract description 15
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 14
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 230000001590 oxidative effect Effects 0.000 claims abstract description 14
- 239000012286 potassium permanganate Substances 0.000 claims abstract description 14
- 239000010457 zeolite Substances 0.000 claims abstract description 14
- 238000010521 absorption reaction Methods 0.000 claims 1
- 238000006477 desulfuration reaction Methods 0.000 abstract description 21
- 230000023556 desulfurization Effects 0.000 abstract description 19
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 abstract description 2
- 235000011130 ammonium sulphate Nutrition 0.000 abstract description 2
- 239000000443 aerosol Substances 0.000 abstract 1
- 150000003464 sulfur compounds Chemical class 0.000 abstract 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 21
- 229910052717 sulfur Inorganic materials 0.000 description 21
- 239000011593 sulfur Substances 0.000 description 21
- 239000003795 chemical substances by application Substances 0.000 description 17
- 230000003009 desulfurizing effect Effects 0.000 description 14
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000011575 calcium Substances 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000440 bentonite Substances 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 description 2
- 125000001741 organic sulfur group Chemical group 0.000 description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- AOSFMYBATFLTAQ-UHFFFAOYSA-N 1-amino-3-(benzimidazol-1-yl)propan-2-ol Chemical compound C1=CC=C2N(CC(O)CN)C=NC2=C1 AOSFMYBATFLTAQ-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Diammonium sulfite Chemical compound [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- NKWPZUCBCARRDP-UHFFFAOYSA-L calcium bicarbonate Chemical compound [Ca+2].OC([O-])=O.OC([O-])=O NKWPZUCBCARRDP-UHFFFAOYSA-L 0.000 description 1
- 229910000020 calcium bicarbonate Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- LDHBWEYLDHLIBQ-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide;hydrate Chemical compound O.[OH-].[O-2].[Fe+3] LDHBWEYLDHLIBQ-UHFFFAOYSA-M 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses a kind of method purifying sulfur compound flue gas, comprise the following steps: 1) in the first washing adsorption tower, from tail gas, partly isolate sulfur dioxide with ammonia；2) then tail gas transmission is entered the second washing adsorption tower, by flue gas emptying qualified after washing adsorption treatment；Potassium permanganate solution adds the second washing adsorption tower be sulphuric acid by the oxidizing sulfur dioxide in flue gas and separate, the sulphuric acid of unreacted ammonia and generation from the first washing adsorption tower is thus made to form cleaning mixture to realize gas-liquid separation, and the outlet at the second washing adsorption tower arranges compound adsorbent, the activated carbon specifically comprising 20 60wt% of compound adsorbent, the ZSM 11 type zeolite of ZSM 5 and 20 30wt% of 20 40wt%, the preparation method of this compound adsorbent is mixing method.The method can efficiently separate sulfur dioxide and avoids again the release of ammonia and avoid the generation of the Ammonium Sulfate Aerosol being generated by simultaneously, has higher desulfurization degree, it is achieved extremely low sulfur dioxide and the clean gas of ammonia density.
Description
Technical field
The present invention relates to a kind of method removing iron and steel sulfide in flue gas.
Background technology
CN1067828A discloses one " room temperature loss of essence organic sulfur and inorganic sulfur new technology ", uses the method bag
Include with modified activated carbon or ferrum oxide desulfurization at normal temperatures, then at a temperature of 30-120 DEG C, use ordinary-temp hydrolysis
Organic sulfur catalyst, ordinary-pressure hydrolysis absorbs sulfur, or last the most again with modified activated carbon or ferrum oxide the most at normal temperatures
Desulfurization.Wherein ferric oxide desulfurizer is commercially available TG-1, SN-1 and ET-1, in that patent the most in detail
Record composition and the preparation method of these desulfurizing agents.Desulfurization precision is 0.1ppm, does not mention Sulfur capacity.
CN1068356A discloses one " coal gas of high temperature one-step desulfurization agent ", the method include primary desulfurization and
High temperature second step desulfurization, second step desulfurization is carried out at 650 DEG C.The desulfurizing agent of primary desulfurization is by giving up
Iron cement blends 4-15% calcium oxide and the bentonite of 10-40%, and under the high temperature of 800-1000 DEG C, roasting is made
, desulfuration efficiency ＞ 90%, Sulfur capacity is 8%.The most do not mention the temperature of first step desulfurization,
The most do not mention the calcination atmosphere of desulfurizing agent.The desulfurizing agent of second step desulfurization is ferrum oxide and zinc oxide blending
10-40% bentonite, makes 800-1000 DEG C of high-temperature roasting, desulfuration efficiency ＞ 90%, and Sulfur capacity is
8%.The composition of iron cement is considerably complicated, also differs from its composition of the iron cement in the different courses of processing,
And containing many impurity in iron cement, such as aluminum, phosphorus, sulfur, manganese, carbon etc., additionally, may in useless mud
Containing ferrum, the most do not describe the composition of scrap iron mud in detail, the most just cannot judge in iron cement
The content of middle ferrum.But from its character express it can be seen that this ferric oxide desulfurizer is only used for thick desulfurization.
Additionally, CN1094331A discloses one " normal temp zinc oxide desulfuriging agent and preparation method ".
The performance of a kind of desulfurizing agent depends primarily on its Sulfur capacity, desulfurization precision, Sulfur capacity is the biggest, desulfurization precision more
Height, then the performance of desulfurizing agent is the best.In CN1067828A, the desulfurization precision of desulfurizing agent is not high enough；
In CN1068356A, the Sulfur capacity of desulfurizing agent is big not, and desulfurization precision is the most not high enough, so needing two step ability
Desulfurization is to≤1ppm.
CN99100754 discloses desulfurizing agent and contains the Ca of specific composite construction2Fe2O5Active component,
Ca2Fe2O5The amount of active component is more than the 40% of desulfurizing agent gross weight, with less than desulfurizing agent gross weight during use
The water activation of amount 20%.Inventive desulfurization agent can contain the CaO less than desulfurizing agent gross weight 40%,
Ca(OH)2, Fe2O3And SiO2.Desulfurizing agent is so prepared as follows: Main Ingredients and Appearance is oxygen by a.
Change ferrum and/or the powder of hydrated ferric oxide. and/or ferric nitrate and calcium oxide and/or calcium hydroxide and/or calcium bicarbonate
And/or the powder mixing of calcium carbonate, wherein ferrum is 1: 1 to 1: 5 with the mol ratio of calcium；B. compound is added
Water stirs, molding, is dried；C. roasting 0.5 to 24 in the oxidizing atmosphere at a temperature of 700 DEG C～1100 DEG C
Hour；The most uniformly spray a small amount of water and prepare desulfurizing agent finished product.
The method illustrating to remove sulfur dioxide from flue gas in DE 37 33 319 C2.It relates to point
From three stage countercurrent scrubber techniques of sulfur dioxide, wherein, at dust filter with for by washing with water
After device separates the chilling scrubber step of hydrochloric acid and Fluohydric acid., it is provided with three stage countercurrent scrubber dresses
Put.The first two sulfur dioxide scrubber processing step operates by adding ammonia, and in third step
Add the ammonia that sulphuric acid is discharged with separation.
From DE 197 31 062 C2 understand a kind of from flue gas, particularly tail gas and refuse from electric station burn
Change the method for separating acid gas in the tail gas of stove.Illustrate the two stage countercurrent washings for separating SO 2
Device technique.For separating SO 2 preset to remove hydrochloric acid and Fluohydric acid. by washing dust filter with
Chilling/scrubber's step.In the scrubber of the first order is circulated, ammonium sulfite/ammonium bisulfite is oxygenous
Body is oxidized to ammonium sulfate.
EP 0 778 067 B1 discloses the equipment for purifying the flue gas with different amounts of acid ingredient and behaviour
The method making this equipment.At dust filter with for being separated the chilling of hydrochloric acid and Fluohydric acid ./wash by washing
After washing device step, it is scheduled that countercurrent washer technique is with separating SO 2.
Summary of the invention
It is an object of the invention to propose a kind of method removing iron and steel sulfide in flue gas.
For reaching this purpose, the present invention by the following technical solutions:
The method removing iron and steel sulfide in flue gas, comprises the following steps: 1) wash in adsorption tower first with ammonia
From tail gas, part isolates sulfur dioxide；2) then tail gas transmission is entered the second washing adsorption tower, washing is inhaled
Flue gas emptying qualified after attached process；Potassium permanganate solution is added the second washing adsorption tower by two in flue gas
Sulfur oxide is oxidized to sulphuric acid and separates, and thus makes unreacted ammonia and the sulfur of generation from the first washing adsorption tower
Acid formation cleaning mixture is to realize gas-liquid separation, and arranges compound adsorbent in the second outlet washing adsorption tower,
The activated carbon specifically comprising 20-60wt% of compound adsorbent, the ZSM-5 of 20-40wt% and
The ZSM-11 type zeolite of 20-30wt%, the preparation method of this compound adsorbent is mixing method.
The method can efficiently separate sulfur dioxide and avoids again the release of ammonia and avoid the sulphuric acid being generated by simultaneously
The aerocolloidal generation of ammonium, has higher desulfurization degree, it is achieved extremely low sulfur dioxide and the clean gas of ammonia density
Body.
Detailed description of the invention
Embodiment 1
The method removing iron and steel sulfide in flue gas, partly divides in the first washing adsorption tower with ammonia from tail gas
Separate out sulfur dioxide；Then tail gas transmission is entered the second washing adsorption tower, by qualified after washing adsorption treatment
Flue gas empties；It is sulfur by the oxidizing sulfur dioxide in flue gas that potassium permanganate solution adds the second washing adsorption tower
Acid also separates, thus make the sulphuric acid of unreacted ammonia and generation from the first washing adsorption tower formed cleaning mixture with
Realize gas-liquid separation, and compound adsorbent is set in the second outlet washing adsorption tower, compound adsorbent
Specifically comprise the activated carbon of 30wt%, the ZSM-11 type zeolite of ZSM-5 and 30wt% of 40wt%,
The preparation method of this compound adsorbent is mixing method.
Embodiment 2
The method removing iron and steel sulfide in flue gas, partly divides in the first washing adsorption tower with ammonia from tail gas
Separate out sulfur dioxide；Then tail gas transmission is entered the second washing adsorption tower, by qualified after washing adsorption treatment
Flue gas empties；It is sulfur by the oxidizing sulfur dioxide in flue gas that potassium permanganate solution adds the second washing adsorption tower
Acid also separates, thus make the sulphuric acid of unreacted ammonia and generation from the first washing adsorption tower formed cleaning mixture with
Realize gas-liquid separation, and compound adsorbent is set in the second outlet washing adsorption tower, compound adsorbent
Specifically comprise the activated carbon of 40wt%, the ZSM-11 type zeolite of ZSM-5 and 20wt% of 40wt%,
The preparation method of this compound adsorbent is mixing method.
Embodiment 3
The method removing iron and steel sulfide in flue gas, partly divides in the first washing adsorption tower with ammonia from tail gas
Separate out sulfur dioxide；Then tail gas transmission is entered the second washing adsorption tower, by qualified after washing adsorption treatment
Flue gas empties；It is sulfur by the oxidizing sulfur dioxide in flue gas that potassium permanganate solution adds the second washing adsorption tower
Acid also separates, thus make the sulphuric acid of unreacted ammonia and generation from the first washing adsorption tower formed cleaning mixture with
Realize gas-liquid separation, and compound adsorbent is set in the second outlet washing adsorption tower, compound adsorbent
Specifically comprise the activated carbon of 50wt%, the ZSM-11 type zeolite of ZSM-5 and 30wt% of 20wt%,
The preparation method of this compound adsorbent is mixing method.
Embodiment 4
The method removing iron and steel sulfide in flue gas, partly divides in the first washing adsorption tower with ammonia from tail gas
Separate out sulfur dioxide；Then tail gas transmission is entered the second washing adsorption tower, by qualified after washing adsorption treatment
Flue gas empties；It is sulfur by the oxidizing sulfur dioxide in flue gas that potassium permanganate solution adds the second washing adsorption tower
Acid also separates, thus make the sulphuric acid of unreacted ammonia and generation from the first washing adsorption tower formed cleaning mixture with
Realize gas-liquid separation, and compound adsorbent is set in the second outlet washing adsorption tower, compound adsorbent
Specifically comprise the activated carbon of 60wt%, the ZSM-11 type zeolite of ZSM-5 and 20wt% of 20wt%,
The preparation method of this compound adsorbent is mixing method.
Embodiment 5
The method removing iron and steel sulfide in flue gas, partly divides in the first washing adsorption tower with ammonia from tail gas
Separate out sulfur dioxide；Then tail gas transmission is entered the second washing adsorption tower, by qualified after washing adsorption treatment
Flue gas empties；It is sulfur by the oxidizing sulfur dioxide in flue gas that potassium permanganate solution adds the second washing adsorption tower
Acid also separates, thus make the sulphuric acid of unreacted ammonia and generation from the first washing adsorption tower formed cleaning mixture with
Realize gas-liquid separation, and compound adsorbent is set in the second outlet washing adsorption tower, compound adsorbent
Specifically comprise the activated carbon of 50wt%, the ZSM-11 type zeolite of ZSM-5 and 25wt% of 25wt%,
The preparation method of this compound adsorbent is mixing method.
Embodiment 6
The method removing iron and steel sulfide in flue gas, partly divides in the first washing adsorption tower with ammonia from tail gas
Separate out sulfur dioxide；Then tail gas transmission is entered the second washing adsorption tower, by qualified after washing adsorption treatment
Flue gas empties；It is sulfur by the oxidizing sulfur dioxide in flue gas that potassium permanganate solution adds the second washing adsorption tower
Acid also separates, thus make the sulphuric acid of unreacted ammonia and generation from the first washing adsorption tower formed cleaning mixture with
Realize gas-liquid separation, and compound adsorbent is set in the second outlet washing adsorption tower, compound adsorbent
Specifically comprise the activated carbon of 50wt%, the ZSM-11 type zeolite of ZSM-5 and 30wt% of 20wt%,
The preparation method of this compound adsorbent is mixing method.
Embodiment 7
The method removing iron and steel sulfide in flue gas, partly divides in the first washing adsorption tower with ammonia from tail gas
Separate out sulfur dioxide；Then tail gas transmission is entered the second washing adsorption tower, by qualified after washing adsorption treatment
Flue gas empties；It is sulfur by the oxidizing sulfur dioxide in flue gas that potassium permanganate solution adds the second washing adsorption tower
Acid also separates, thus make the sulphuric acid of unreacted ammonia and generation from the first washing adsorption tower formed cleaning mixture with
Realize gas-liquid separation, and compound adsorbent is set in the second outlet washing adsorption tower, compound adsorbent
Specifically comprise the activated carbon of 45wt%, the ZSM-11 type zeolite of ZSM-5 and 30wt% of 25wt%,
The preparation method of this compound adsorbent is mixing method.
Embodiment 8
The method removing iron and steel sulfide in flue gas, partly divides in the first washing adsorption tower with ammonia from tail gas
Separate out sulfur dioxide；Then tail gas transmission is entered the second washing adsorption tower, by qualified after washing adsorption treatment
Flue gas empties；It is sulfur by the oxidizing sulfur dioxide in flue gas that potassium permanganate solution adds the second washing adsorption tower
Acid also separates, thus make the sulphuric acid of unreacted ammonia and generation from the first washing adsorption tower formed cleaning mixture with
Realize gas-liquid separation, and compound adsorbent is set in the second outlet washing adsorption tower, compound adsorbent
Specifically comprise the activated carbon of 55wt%, the ZSM-11 type zeolite of ZSM-5 and 20wt% of 25wt%,
The preparation method of this compound adsorbent is mixing method.
Embodiment 9
The method removing iron and steel sulfide in flue gas, partly divides in the first washing adsorption tower with ammonia from tail gas
Separate out sulfur dioxide；Then tail gas transmission is entered the second washing adsorption tower, by qualified after washing adsorption treatment
Flue gas empties；It is sulfur by the oxidizing sulfur dioxide in flue gas that potassium permanganate solution adds the second washing adsorption tower
Acid also separates, thus make the sulphuric acid of unreacted ammonia and generation from the first washing adsorption tower formed cleaning mixture with
Realize gas-liquid separation, and compound adsorbent is set in the second outlet washing adsorption tower, compound adsorbent
Specifically comprise the activated carbon of 50wt%, the ZSM-11 type zeolite of ZSM-5 and 22wt% of 28wt%,
The preparation method of this compound adsorbent is mixing method.
Embodiment 10
The method removing iron and steel sulfide in flue gas, partly divides in the first washing adsorption tower with ammonia from tail gas
Separate out sulfur dioxide；Then tail gas transmission is entered the second washing adsorption tower, by qualified after washing adsorption treatment
Flue gas empties；It is sulfur by the oxidizing sulfur dioxide in flue gas that potassium permanganate solution adds the second washing adsorption tower
Acid also separates, thus make the sulphuric acid of unreacted ammonia and generation from the first washing adsorption tower formed cleaning mixture with
Realize gas-liquid separation, and compound adsorbent is set in the second outlet washing adsorption tower, compound adsorbent
Specifically comprise the activated carbon of 50wt%, the ZSM-11 type zeolite of ZSM-5 and 23wt% of 27wt%,
The preparation method of this compound adsorbent is mixing method.
Embodiment 11
The method removing iron and steel sulfide in flue gas, partly divides in the first washing adsorption tower with ammonia from tail gas
Separate out sulfur dioxide；Then tail gas transmission is entered the second washing adsorption tower, by qualified after washing adsorption treatment
Flue gas empties；It is sulfur by the oxidizing sulfur dioxide in flue gas that potassium permanganate solution adds the second washing adsorption tower
Acid also separates, thus make the sulphuric acid of unreacted ammonia and generation from the first washing adsorption tower formed cleaning mixture with
Realize gas-liquid separation, and compound adsorbent is set in the second outlet washing adsorption tower, compound adsorbent
Specifically comprise the activated carbon of 50wt%, the ZSM-11 type zeolite of ZSM-5 and 24wt% of 26wt%,
The preparation method of this compound adsorbent is mixing method.
Claims (1)
1. the method removing iron and steel sulfide in flue gas, comprises the following steps: 1) wash in adsorption tower first with ammonia
From tail gas, part isolates sulfur dioxide；2) then tail gas transmission is entered the second washing adsorption tower, will washing
Flue gas emptying qualified after adsorption treatment；It is characterized in that: potassium permanganate solution is added the second washing absorption
Oxidizing sulfur dioxide in flue gas is sulphuric acid and separates by tower, thus makes unreacted from the first washing adsorption tower
The sulphuric acid of ammonia and generation form cleaning mixture to realize gas-liquid separation, and in the outlet of the second washing adsorption tower
Compound adsorbent is set, the activated carbon specifically comprising 30-60wt% of compound adsorbent, 20-40wt%'s
The ZSM-11 type zeolite of ZSM-5 and 20-30wt%, the preparation method of this compound adsorbent is mixing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410617741.4A CN104353344B (en) | 2014-11-05 | 2014-11-05 | The method removing iron and steel sulfide in flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410617741.4A CN104353344B (en) | 2014-11-05 | 2014-11-05 | The method removing iron and steel sulfide in flue gas |
Publications (2)
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| WO2006096376A2 (en) * | 2005-03-03 | 2006-09-14 | Conocophillips Company | Mercury removal sorbent |
| CN102753518A (en) * | 2010-02-12 | 2012-10-24 | 斯塔米卡邦有限公司 | Removal of ammonia in urea finishing |
| CN103566746A (en) * | 2013-11-26 | 2014-02-12 | 武汉凯迪电力环保有限公司 | External efficient oxidation ammonia desulphurization process and device |
| CN103657367A (en) * | 2013-12-13 | 2014-03-26 | 何金整 | Device and process for changing one-tower calcium desulphurization to double-tower ammonia desulphurization |
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| WO2006096376A2 (en) * | 2005-03-03 | 2006-09-14 | Conocophillips Company | Mercury removal sorbent |
| CN102753518A (en) * | 2010-02-12 | 2012-10-24 | 斯塔米卡邦有限公司 | Removal of ammonia in urea finishing |
| CN103566746A (en) * | 2013-11-26 | 2014-02-12 | 武汉凯迪电力环保有限公司 | External efficient oxidation ammonia desulphurization process and device |
| CN103657367A (en) * | 2013-12-13 | 2014-03-26 | 何金整 | Device and process for changing one-tower calcium desulphurization to double-tower ammonia desulphurization |
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