CN102218260A - Absorbent used for removing sulfides in malodorous gases - Google Patents
Absorbent used for removing sulfides in malodorous gases Download PDFInfo
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- 239000002250 absorbent Substances 0.000 title claims abstract description 39
- 230000002745 absorbent Effects 0.000 title claims abstract description 39
- 239000007789 gas Substances 0.000 title abstract description 20
- 150000003568 thioethers Chemical class 0.000 title abstract description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 33
- 239000002994 raw material Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910001868 water Inorganic materials 0.000 claims abstract description 15
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 claims abstract description 14
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000002360 preparation method Methods 0.000 claims abstract description 12
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims abstract description 10
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims abstract description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 9
- 235000018553 tannin Nutrition 0.000 claims abstract description 9
- 229920001864 tannin Polymers 0.000 claims abstract description 9
- 239000001648 tannin Substances 0.000 claims abstract description 9
- CMZUMMUJMWNLFH-UHFFFAOYSA-N sodium metavanadate Chemical compound [Na+].[O-][V](=O)=O CMZUMMUJMWNLFH-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229960001484 edetic acid Drugs 0.000 claims abstract description 3
- UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 claims abstract 2
- 239000000203 mixture Substances 0.000 claims description 12
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 claims description 8
- 229940005561 1,4-benzoquinone Drugs 0.000 claims description 6
- 239000006184 cosolvent Substances 0.000 claims description 6
- 239000007800 oxidant agent Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 239000003085 diluting agent Substances 0.000 claims description 5
- 150000007529 inorganic bases Chemical class 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims description 5
- VZOPRCCTKLAGPN-ZFJVMAEJSA-L potassium;sodium;(2r,3r)-2,3-dihydroxybutanedioate;tetrahydrate Chemical compound O.O.O.O.[Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O VZOPRCCTKLAGPN-ZFJVMAEJSA-L 0.000 claims description 4
- 229940074446 sodium potassium tartrate tetrahydrate Drugs 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 2
- 159000000000 sodium salts Chemical class 0.000 claims description 2
- 239000002594 sorbent Substances 0.000 claims 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 abstract description 26
- 238000000034 method Methods 0.000 abstract description 25
- 230000000694 effects Effects 0.000 abstract description 14
- 229910000037 hydrogen sulfide Inorganic materials 0.000 abstract description 11
- 238000006477 desulfuration reaction Methods 0.000 abstract description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 7
- 230000023556 desulfurization Effects 0.000 abstract description 7
- 125000001741 organic sulfur group Chemical group 0.000 abstract description 7
- 239000002904 solvent Substances 0.000 abstract description 7
- 239000011593 sulfur Substances 0.000 abstract description 5
- 229910052717 sulfur Inorganic materials 0.000 abstract description 5
- 230000002378 acidificating effect Effects 0.000 abstract 1
- HELHAJAZNSDZJO-OLXYHTOASA-L sodium L-tartrate Chemical compound [Na+].[Na+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O HELHAJAZNSDZJO-OLXYHTOASA-L 0.000 abstract 1
- 239000001433 sodium tartrate Substances 0.000 abstract 1
- 229960002167 sodium tartrate Drugs 0.000 abstract 1
- 235000011004 sodium tartrates Nutrition 0.000 abstract 1
- 235000001508 sulfur Nutrition 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 20
- 238000006243 chemical reaction Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 12
- 239000007788 liquid Substances 0.000 description 9
- 150000001412 amines Chemical class 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- CRVGTESFCCXCTH-UHFFFAOYSA-N methyl diethanolamine Chemical compound OCCN(C)CCO CRVGTESFCCXCTH-UHFFFAOYSA-N 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- -1 thioether sulfides Chemical class 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 4
- 230000000536 complexating effect Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 150000003335 secondary amines Chemical class 0.000 description 3
- 150000005208 1,4-dihydroxybenzenes Chemical class 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000005504 petroleum refining Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 2
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- PTKWYSNDTXDBIZ-UHFFFAOYSA-N 9,10-dioxoanthracene-1,2-disulfonic acid Chemical compound C1=CC=C2C(=O)C3=C(S(O)(=O)=O)C(S(=O)(=O)O)=CC=C3C(=O)C2=C1 PTKWYSNDTXDBIZ-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 240000005373 Panax quinquefolius Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- MPMSMUBQXQALQI-UHFFFAOYSA-N cobalt phthalocyanine Chemical compound [Co+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 MPMSMUBQXQALQI-UHFFFAOYSA-N 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- VLXBWPOEOIIREY-UHFFFAOYSA-N dimethyl diselenide Natural products C[Se][Se]C VLXBWPOEOIIREY-UHFFFAOYSA-N 0.000 description 1
- WQOXQRCZOLPYPM-UHFFFAOYSA-N dimethyl disulfide Chemical compound CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 150000001455 metallic ions Chemical class 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 150000002898 organic sulfur compounds Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003335 steric effect Effects 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention provides an absorbent used for removing sulfides in malodorous gases and a preparation method thereof, and aims at solving the problems that the existing desulfurization methods have high operating cost, poor desulfurization effects and high solvent cost. The absorbent is prepared from the following raw materials of water, sodium hydroxide or potassium hydroxide, a sodium salt of ethylene diamine tetra-acetic acid (EDTA) or sodium tartrate, p-benzoquinone or tannin, vanadium pentoxide or sodium metavanadate and ethanolamine according to the preparation method provided by the invention. The absorbent can absorb hydrogen sulfide, mercaptans, thioethers and other sulfur-containing acidic gases, and has low cost and a wide application range, the removal rate of hydrogen sulfide is more than 99% and the removal rate of other organic sulfurs is more than 90%.
Description
Technical field
The invention belongs to the master gas technical field, relate to a kind of absorbent that removes sulfide in the foul gas specifically.
Background technology
Petroleum refining industry is the key industry that produces odor pollution, and the chemical reaction of complexity can produce a large amount of H in the petroleum refining process
2Odorants such as S, COS, mercaptan, thioether.These materials enter atmosphere in modes such as discharging, volatilization, leakages in production, transporting procedures, cause the pollution sources different odor pollution of degree on every side.In recent years, more and more enterprises begins the processing foreign sour crude.It is more outstanding that especially odor pollution problem of environmental pollution becomes.The surrounding environment of each oil plant all faces the trend that odor pollution increases the weight of day by day.
The method that removes these stench sulfide is a lot, is divided into two kinds of dry desulfurization and wet desulphurizations.The method of wet desulphurization both at home and abroad mainly contains at present: anthraquinone disulphonate method (ADA), tannin extract method (TV method), phthalocyanine cobalt sulfonate method, complexing iron, amine method desulfurization etc.
Patent documentation CN1421264 discloses a kind of absorption liquid that removes sulfide from admixture of gas, and this absorption liquid comprises (1) main absorbent, is made up of sterically hindered amines (I) and N methyldiethanol amine (II); (2) cosolvent (III).Adopt this absorption liquid, can be simultaneously with H
2S, COS, mercaptan, thioether sulfides remove.This absorption liquid is based on organic amine, the operating cost costliness, and organic solvent amine itself is degraded easily, need remove heat stable salt.
Patent documentation CN1384046 discloses a kind of desulfurizing tanning extract process, and this technology is squeezed into the solution circulating slot with alkaline tannin extract solution, and the self-loopa groove comes out, and enters splitting of system after the pressurization after filtration and takes off tower, absorbs the H in the gas
2S takes off solution that tower comes out and enters to split and take off regenerator by splitting, the good solution of regeneration by tower bottom flow to the solution circulating slot, pressurized circulation use after filtration; Desulfuration solution comes out to take off tower after filter-press is delivered to become from circulating slot, absorbs the H in the gas
2S takes off solution that tower comes out by change and enters and become precipitation liquid regenerator, and the solution that regeneration is good takes off regenerator by change and comes out, and enters to become precipitation liquid circulating slot, and pressurization after filtration so recycles again.This method is formed complexity for the foul gas of some cell arrangement discharging of petrochemical enterprise, contains multiple complicated organic matter, and hydrogen sulfide, organic sulfur content are all higher.Utilize existing desulfurizing agent and method, be difficult to effective desulfurization.
Patent documentation CN1887406 discloses a kind of H that removes from gaseous mixture
2The solvent of S, this solvent are that the organic amine that adds a kind of secondary amine and have space steric effect in based on the N methyldiethanol amine solution of water or sulfolane is as activator, in order to from containing or do not contain CO
2Mist in remove the method for hydrogen sulfide.The invention provides two groups of solution formulas: (1) is suitable for never containing in organic sulfur or the low organic sulfur compound gas and removes H
2The solution formula of S is: N methyldiethanol amine 30~50 weight %, secondary amine 1~10 weight %, sterically hindered amines 1~15 weight %, and all the other components are water; (2) be suitable for from contain volatile sulfur gases, removing H
2The solution formula of S and part organic sulfur is: N methyldiethanol amine 30~40 weight %, secondary amine 1~5 weight %, sterically hindered amines 1~15 weight %, water 5 weight %, all the other components are sulfolane.This solvent is the organic amine solvent, hydrogen sulfide and organic sulfur are all had removal effect preferably, but solvent cost is very high.
Summary of the invention
In order to solve the high problem of operating cost height, bad desulfurization effects, solvent cost that exists in the above-mentioned sulfur method, the invention provides a kind of absorbent that can remove sulfide in the foul gas.Sulfur-bearing sour gas such as this absorbent energy absorbing hydrogen sulphide, mercaptan, thioether do not produce secondary pollution after the absorption, waste liquid is easily handled, and does not contain elemental sulfur in the product, has avoided reactor plugs.
The raw material that removes the absorbent of sulfide in the foul gas provided by the invention form and content as follows:
(A) diluent 67~85 weight %,
(B) strong inorganic base 10~30 weight %,
(C) complex compound cosolvent 0.5~2 weight %,
(D) catalyst 0.1~1 weight %,
(E) oxidant 0.5~2 weight %,
(F) strengthen absorbent 1~4 weight %.
Above-mentioned raw materials mixed, reacts by following preparation method can make absorbent of the present invention:
(1) calculates the required weight of each component according to the proportional meter of each component in the raw material;
(2) elder generation adds in container and should add 60%~80% of component (A) total amount, add the component (C) of capacity afterwards, and be stirred to dissolving fully, add the component (B) of capacity then, and be stirred to dissolving, dissolve, react in the adding container with the component (D) of capacity with (E) at last;
(3) treat in the container all components all dissolving and temperature reduced to below 40 ℃ after, in container, add component (F), replenish simultaneously and add remaining component (A) and also mix, absorbent preparation is so far finished.
Wherein, described diluent (A) is pure water or running water, is used for diluting the active ingredient in the absorbent;
Described strong inorganic base (B) is NaOH or potassium hydroxide, preferred NaOH, and this component is main chemical absorbing component, and sulfide is sour gas, and most component all can react with highly basic;
Described complex compound cosolvent (C) is the sodium salt (EDTA) or the sodium potassium tartrate tetrahydrate of ethylenediamine tetra-acetic acid, or both mixtures, and main effect is a complexing part metals ion, prevents that a small amount of ion from producing precipitation, shields some active metallic ion and participates in reaction;
Described catalyst (D) is 1,4-benzoquinone or tannin, plays catalytic action, and itself can be an oxidizing substance by dioxygen oxidation, has the function of catching oxygen in the foul gas;
Described oxidant (E) is vanadic anhydride or sodium metavanadate, plays oxidation, and itself can be by the reduction of the sulfide in the foul gas, and the low price vanadium of Sheng Chaning can be oxidized to the high price vanadium by oxygen and catalyst (D) simultaneously;
Described reinforcement absorbent (F) is a monoethanolamine, and the process of absorbing hydrogen sulphide is the Physical Absorption process.
According to double-film theory, absorb resistance in the Physical Absorption process and comprise air film resistance and liquid-film resistance, the gas phase total absorption coefficient is:
In MODEL OF CHEMICAL ABSORPTION PROCESS, chemical reaction velocity has great influence to absorption process, divides according to chemical reaction velocity, and may there be three kinds of reactions in MODEL OF CHEMICAL ABSORPTION PROCESS: transient response, fast reaction and long response time.
Component among the present invention (B) absorbing hydrogen sulphide is irreversible chemical reaction at a slow speed, when component (B) when concentration ratio is higher, can be considered irreversible chemical reaction at a slow speed.The MODEL OF CHEMICAL ABSORPTION PROCESS resistance can be similar to Physical Absorption.But component (F) absorbing hydrogen sulphide is instantaneous reversible reaction, can greatly strengthen absorption process with component (F) solution absorbing hydrogen sulphide.Component (F) boiling point substance height, good stability are difficult for decomposing.The reaction of component (F) absorbing hydrogen sulphide generates salt, and is with component (B) reaction, born more again.Like this, in component (B), add component (F), can in absorption process, play the effect of similar catalyst.
The principle that this absorbent absorbs oxidation of sulfureted hydrogen, mercaptan, thioether is as follows:
H
2S+2OH
-→S
2-+2H
2O S
2-+4[O]+OH→SO
4 2-+H
2O
RSH+OH
-→RS
-+H
2O RSH+[O]+OH
-→(RS)
2+H
2O
(RS)
2+[O]+OH
-→SO
4 2-+H
2O+RCOO
-
Absorbent of the present invention is the special-purpose absorbent of a kind of volatility gases containing stench sulphureous gases of function admirable, can be applicable to refine oil, the foul waste gas of factories such as chemical industry, natural gas administers.Sulfur-bearing sour gas such as this absorbent can absorbing hydrogen sulphide, mercaptan, thioether, do not produce secondary pollution after the absorption, promptly do not produce DMDS, the product that generates is high price sulfate radical, inferior sulfate radical, thiosulfate anion etc., waste liquid is easily handled, do not contain elemental sulfur in the product, avoided reactor plugs.This absorbent cost is low, nontoxic, the scope of application is wide, remove in the waste gas hydrogen sulfide content from several milligrams/cubic metres to thousands of milligram/cubic meters, other organic sulfur contents can both reach satisfied effect from several milligrams/cubic metres to hundreds of milligram/cubic meters, the hydrogen sulfide stripping rate is more than 99%, and other organic sulfur removal rates are more than 90%.
The specific embodiment:
The present invention will be further described below in conjunction with specific embodiment, and embodiment 1~6 is the preparation example of absorbent of the present invention, and embodiment 7 is the effect example of absorbent of the present invention.
Embodiment 1
Raw material composition and content are as follows:
(A) running water of 76.5 weight %;
(B) NaOH of 20 weight %;
(C) sodium potassium tartrate tetrahydrate of 1 weight %;
(D) 1,4-benzoquinone of 0.5 weight %;
(E) sodium metavanadate of 1 weight %;
(F) monoethanolamine of 1 weight %.
Above-mentioned raw materials is prepared by preparation method of the present invention can makes absorbent of the present invention.
Embodiment 2
Raw material composition and content are as follows:
(A) running water of 76 weight %;
(B) NaOH of 20 weight %;
(C) sodium potassium tartrate tetrahydrate of 1 weight %;
(D) 1,4-benzoquinone of 1 weight %;
(E) sodium metavanadate of 1 weight %;
(F) monoethanolamine of 1 weight %.
Above-mentioned raw materials is prepared by preparation method of the present invention can makes absorbent of the present invention.
Embodiment 3
Raw material composition and content are as follows:
(A) running water of 76.5 weight %;
(B) NaOH of 20 weight %;
(C) EDTA of 1 weight %;
(D) 1,4-benzoquinone of 1 weight %;
(E) sodium metavanadate of 0.5 weight %;
(F) monoethanolamine of 1 weight %.
Above-mentioned raw materials is prepared by preparation method of the present invention can makes absorbent of the present invention.
Embodiment 4
Raw material composition and content are as follows:
(A) running water of 76 weight %;
(B) NaOH of 20 weight %;
(C) EDTA of 1 weight %;
(D) tannin of 1 weight %;
(E) vanadic anhydride of 1 weight %;
(F) monoethanolamine of 1 weight %.
Above-mentioned raw materials is prepared by preparation method of the present invention can makes absorbent of the present invention.
Embodiment 5
Raw material composition and content are as follows:
(A) running water of 76.5 weight %;
(B) NaOH of 20 weight %;
(C) EDTA of 1 weight %;
(D) tannin of 1 weight %;
(E) vanadic anhydride of 0.5 weight %;
(F) monoethanolamine of 1 weight %.
Above-mentioned raw materials is prepared by preparation method of the present invention can makes absorbent of the present invention.
Embodiment 6
Raw material composition and content are as follows:
(A) running water of 73 weight %;
(B) NaOH of 20 weight %;
(C) EDTA of 1 weight %;
(D) tannin of 1 weight %;
(E) vanadic anhydride of 1 weight %;
(F) monoethanolamine of 4 weight %.
Above-mentioned raw materials is prepared by preparation method of the present invention can makes absorbent of the present invention.The absorbent color of each embodiment and character pair ratio see Table 1.
The color of table 1 embodiment and proterties
Project | Color | Proterties |
Embodiment 1 | Rufous | A small amount of white solid |
Embodiment 2 | Rufous | A small amount of white solid |
Embodiment 3 | Rufous | Solution is more transparent |
Embodiment 4 | Bronzing | A small amount of brown solid |
Embodiment 5 | Bronzing | A small amount of brown solid |
Embodiment 6 | Bronzing | A small amount of brown solid |
Solid particle among embodiment 1 and the embodiment 2 is the solid precipitation that metal ions such as small amount of calcium, magnesium do not have complete complexing dissolving to generate.Mixture after embodiment 4, embodiment 5 and embodiment 6 produce is the bronzing transparency liquid, and a spot of sediment is arranged at the solution bottom, and the inert impurities in this sediment catalyst is not produced novel substance with other substance reactions, does not influence desulfurized effect.
Embodiment 7
With the common fillers tower is absorption equipment, and absorbent of the present invention is carried out hydrogen sulfide absorption effect contrast test, and the concentration of hydrogen sulfide of foul gas is 1500~5000mg/m
3, test result sees Table 2.
The absorbent of each embodiment of table 2 removes the effect of hydrogen sulfide
Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 |
Air inlet H 2S content, mg/m 3 | 3260 | 2160 | 3650 | 3780 | 3490 | 3150 |
H gives vent to anger 2S content, mg/m 3 | 10.8 | 9.5 | 11.2 | 5.9 | 7.1 | 2.6 |
H 2The S removal efficiency, % | 99.7 | 99.6 | 99.7 | 99.8 | 99.8 | 99.9 |
By the tables of data behind the analytical test 2 as can be seen: embodiment 4, embodiment 5 and embodiment 6 assimilation effects obviously are better than embodiment 1, embodiment 2 and embodiment 3; Comparative example 4 and embodiment 6 strengthen the content height of absorbent, good absorbing effect as can be seen.
Form also discovery by the material after the further analysis absorption: the absorption product Central Asia sulfate concentration of embodiment 4 and embodiment 6 is starkly lower than other embodiment, by analyzing possible reason be: 1,4-benzoquinone generates a spot of hydroquinones in the process that participates in reaction, and hydroquinones has stabilization to sulphite; The a little higher than sodium metavanadate of the oxidation effectiveness of vanadic anhydride.
The desulfurization oxidation effectiveness of comprehensive comparative analysis embodiment 6 is better, and embodiment 6 has been carried out the test of mercaptan assimilation effect, and test result sees Table 3.
The absorbent of table 3 embodiment 6 removes the effect of mercaptan
The air inlet mercaptans content, mg/m 3 | 207.5 | 134.4 | 121.9 |
The mercaptans content of giving vent to anger, mg/m 3 | 0 | 0 | 0 |
The mercaptan removal efficiency, % | 100 | 100 | 100 |
Claims (2)
1. an absorbent that removes sulfide in the foul gas is characterized in that, the raw material composition and the content of this absorbent are as follows:
(A) diluent 67~85 weight %,
(B) strong inorganic base 10~30 weight %,
(C) complex compound cosolvent 0.5~2 weight %,
(D) catalyst 0.1~1 weight %,
(E) oxidant 0.5~2 weight %,
(F) strengthen absorbent 1~4 weight %;
This absorbent prepares by following preparation method:
(1) calculates the required weight of each component according to the proportional meter of each component in the raw sorbent;
(2) elder generation adds in container and should add 60%~80% of component (A) total amount, add the component (C) of capacity afterwards, and be stirred to dissolving fully, add the component (B) of capacity then, and be stirred to dissolving, dissolve, react in the adding container with the component (D) of capacity with (E) at last;
(3) treat in the step (2) all components all dissolving and temperature reduced to below 40 ℃ after, in container, add component (F), replenish simultaneously and add remaining component (A) and also mix;
Wherein, described diluent (A) is pure water or running water; Described strong inorganic base (B) is NaOH or potassium hydroxide; Described complex compound cosolvent (C) is the sodium salt (EDTA) or the sodium potassium tartrate tetrahydrate of ethylenediamine tetra-acetic acid, or both mixtures; Described catalyst (D) is 1,4-benzoquinone or tannin; Described oxidant (E) is vanadic anhydride or sodium metavanadate; Described reinforcement absorbent (F) is a monoethanolamine.
2. absorbent according to claim 1 is characterized in that described diluent is a running water, and strong inorganic base is a NaOH, and the complex compound cosolvent is the sodium salt of ethylenediamine tetra-acetic acid, and catalyst is a tannin, and oxidant is a sodium metavanadate.
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CN103285714A (en) * | 2013-06-17 | 2013-09-11 | 连云港盛和生物科技有限公司 | Method for removing odor organic gas |
CN103432883A (en) * | 2013-07-09 | 2013-12-11 | 南京信息工程大学 | Compound desulfurizer for flue gas |
CN106823693A (en) * | 2017-03-28 | 2017-06-13 | 中北大学 | A kind of deep desulfuration absorbent for smoke-gas wet desulfurization |
CN114790130A (en) * | 2021-01-26 | 2022-07-26 | 山东新时代药业有限公司 | Deodorization recovery method for organic waste liquid |
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CN103285714A (en) * | 2013-06-17 | 2013-09-11 | 连云港盛和生物科技有限公司 | Method for removing odor organic gas |
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CN106823693B (en) * | 2017-03-28 | 2019-08-27 | 中北大学 | A deep desulfurization absorbent for flue gas wet desulfurization |
CN114790130A (en) * | 2021-01-26 | 2022-07-26 | 山东新时代药业有限公司 | Deodorization recovery method for organic waste liquid |
CN115893711A (en) * | 2022-10-26 | 2023-04-04 | 中国石油化工股份有限公司 | Method for treating organic sulfur in fracturing flow-back fluid suitable for oil and gas field |
CN115893711B (en) * | 2022-10-26 | 2023-10-31 | 中国石油化工股份有限公司 | Treatment method suitable for organic sulfur in fracturing flowback fluid of oil and gas field |
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