CN116396738A - Low-toxicity high-efficiency environment-friendly sulfur dissolving agent and preparation method thereof - Google Patents
Low-toxicity high-efficiency environment-friendly sulfur dissolving agent and preparation method thereof Download PDFInfo
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- CN116396738A CN116396738A CN202310377612.1A CN202310377612A CN116396738A CN 116396738 A CN116396738 A CN 116396738A CN 202310377612 A CN202310377612 A CN 202310377612A CN 116396738 A CN116396738 A CN 116396738A
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 120
- 239000011593 sulfur Substances 0.000 title claims abstract description 116
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 116
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 94
- 231100000053 low toxicity Toxicity 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title abstract description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 66
- 230000007797 corrosion Effects 0.000 claims abstract description 24
- 238000005260 corrosion Methods 0.000 claims abstract description 24
- 239000007864 aqueous solution Substances 0.000 claims abstract description 13
- 239000002904 solvent Substances 0.000 claims abstract description 11
- 239000003112 inhibitor Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000008139 complexing agent Substances 0.000 claims abstract description 8
- 239000004088 foaming agent Substances 0.000 claims abstract description 8
- -1 diaryl disulfide Chemical compound 0.000 claims description 26
- 238000003756 stirring Methods 0.000 claims description 19
- 239000000843 powder Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 13
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- WQOXQRCZOLPYPM-UHFFFAOYSA-N dimethyl disulfide Chemical compound CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 claims description 10
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 8
- 229910021538 borax Inorganic materials 0.000 claims description 8
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 8
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 8
- 239000004328 sodium tetraborate Substances 0.000 claims description 8
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 8
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 7
- UMGDCJDMYOKAJW-UHFFFAOYSA-N aminothiocarboxamide Natural products NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 6
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 6
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 6
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 5
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 claims description 5
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 4
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 claims description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 4
- PMDCZENCAXMSOU-UHFFFAOYSA-N N-ethylacetamide Chemical compound CCNC(C)=O PMDCZENCAXMSOU-UHFFFAOYSA-N 0.000 claims description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- 239000000440 bentonite Substances 0.000 claims description 4
- 229910000278 bentonite Inorganic materials 0.000 claims description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 4
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 4
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 4
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- 235000019830 sodium polyphosphate Nutrition 0.000 claims description 4
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 4
- YWYZEGXAUVWDED-UHFFFAOYSA-N triammonium citrate Chemical compound [NH4+].[NH4+].[NH4+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O YWYZEGXAUVWDED-UHFFFAOYSA-N 0.000 claims description 4
- 229960001124 trientine Drugs 0.000 claims description 4
- 239000003208 petroleum Substances 0.000 claims description 3
- UOFGSWVZMUXXIY-UHFFFAOYSA-N 1,5-Diphenyl-3-thiocarbazone Chemical compound C=1C=CC=CC=1N=NC(=S)NNC1=CC=CC=C1 UOFGSWVZMUXXIY-UHFFFAOYSA-N 0.000 claims description 2
- 239000005725 8-Hydroxyquinoline Substances 0.000 claims description 2
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 claims description 2
- SUAKHGWARZSWIH-UHFFFAOYSA-N N,N‐diethylformamide Chemical compound CCN(CC)C=O SUAKHGWARZSWIH-UHFFFAOYSA-N 0.000 claims description 2
- OHLUUHNLEMFGTQ-UHFFFAOYSA-N N-methylacetamide Chemical compound CNC(C)=O OHLUUHNLEMFGTQ-UHFFFAOYSA-N 0.000 claims description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims description 2
- VBIIFPGSPJYLRR-UHFFFAOYSA-M Stearyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)C VBIIFPGSPJYLRR-UHFFFAOYSA-M 0.000 claims description 2
- DGEZNRSVGBDHLK-UHFFFAOYSA-N [1,10]phenanthroline Chemical compound C1=CN=C2C3=NC=CC=C3C=CC2=C1 DGEZNRSVGBDHLK-UHFFFAOYSA-N 0.000 claims description 2
- YDONNITUKPKTIG-UHFFFAOYSA-N [Nitrilotris(methylene)]trisphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CP(O)(O)=O YDONNITUKPKTIG-UHFFFAOYSA-N 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 2
- 239000000975 dye Substances 0.000 claims description 2
- 150000002191 fatty alcohols Chemical class 0.000 claims description 2
- 239000010440 gypsum Substances 0.000 claims description 2
- 229910052602 gypsum Inorganic materials 0.000 claims description 2
- URXQDXAVUYKSCK-UHFFFAOYSA-N hexadecyl(dimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[NH+](C)C URXQDXAVUYKSCK-UHFFFAOYSA-N 0.000 claims description 2
- GNOIPBMMFNIUFM-UHFFFAOYSA-N hexamethylphosphoric triamide Chemical compound CN(C)P(=O)(N(C)C)N(C)C GNOIPBMMFNIUFM-UHFFFAOYSA-N 0.000 claims description 2
- DVEKCXOJTLDBFE-UHFFFAOYSA-N n-dodecyl-n,n-dimethylglycinate Chemical compound CCCCCCCCCCCC[N+](C)(C)CC([O-])=O DVEKCXOJTLDBFE-UHFFFAOYSA-N 0.000 claims description 2
- 229960003540 oxyquinoline Drugs 0.000 claims description 2
- 229960003330 pentetic acid Drugs 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims description 2
- 238000005498 polishing Methods 0.000 claims description 2
- LJCNRYVRMXRIQR-OLXYHTOASA-L potassium sodium L-tartrate Chemical compound [Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O LJCNRYVRMXRIQR-OLXYHTOASA-L 0.000 claims description 2
- 229940074439 potassium sodium tartrate Drugs 0.000 claims description 2
- 239000001397 quillaja saponaria molina bark Substances 0.000 claims description 2
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 229930182490 saponin Natural products 0.000 claims description 2
- 150000007949 saponins Chemical class 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 claims description 2
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 2
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 2
- DZCAZXAJPZCSCU-UHFFFAOYSA-K sodium nitrilotriacetate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CC([O-])=O DZCAZXAJPZCSCU-UHFFFAOYSA-K 0.000 claims description 2
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 claims description 2
- 235000011006 sodium potassium tartrate Nutrition 0.000 claims description 2
- 229940048086 sodium pyrophosphate Drugs 0.000 claims description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 2
- 235000011152 sodium sulphate Nutrition 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 235000019818 tetrasodium diphosphate Nutrition 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 21
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 239000002861 polymer material Substances 0.000 abstract 1
- 238000011156 evaluation Methods 0.000 description 15
- 230000008021 deposition Effects 0.000 description 12
- 238000004090 dissolution Methods 0.000 description 11
- 239000007789 gas Substances 0.000 description 9
- 230000008569 process Effects 0.000 description 5
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000007794 irritation Effects 0.000 description 3
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229920001021 polysulfide Polymers 0.000 description 2
- 239000005077 polysulfide Substances 0.000 description 2
- 150000008117 polysulfides Polymers 0.000 description 2
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- QGJOPFRUJISHPQ-NJFSPNSNSA-N carbon disulfide-14c Chemical compound S=[14C]=S QGJOPFRUJISHPQ-NJFSPNSNSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- MBHINSULENHCMF-UHFFFAOYSA-N n,n-dimethylpropanamide Chemical compound CCC(=O)N(C)C MBHINSULENHCMF-UHFFFAOYSA-N 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 229940080818 propionamide Drugs 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
- C09K8/532—Sulfur
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a low-toxicity high-efficiency environment-friendly sulfur-dissolving agent and a preparation method thereof, belonging to the field of petrochemical industry. The sulfur-dissolving agent consists of sodium hydroxide aqueous solution, sulfur-dissolving main agent, mutual solvent, anti-settling agent, foaming agent, complexing agent and corrosion inhibitor. The sulfur dissolving agent is light yellow or reddish brown transparent liquid and is easy to dissolve in water. The invention also discloses a preparation method of the sulfur dissolving agent. The sulfur dissolving agent prepared by the invention has the advantages of low toxicity, high efficiency, environmental protection and the like, has wide use environment temperature range, has good sulfur dissolving effect and has very little corrosiveness to metal and high polymer materials. The preparation method provided by the invention has the advantages of simplicity, small environmental impact, stable performance, low cost and convenience in working operation, and can realize industrialized mass production.
Description
Technical Field
The invention relates to the field of petrochemical industry, in particular to a low-toxicity high-efficiency environment-friendly sulfur dissolving agent and a preparation method thereof. The method is used for removing the blockage of a well shaft, a ground pipeline, a valve, a screen mesh and the like of a high sulfur-containing gas well caused by sulfur deposition, has high-efficiency sulfur dissolving capacity and is wide in use environment temperature range.
Background
With the development of high sulfur gas fields, sulfur deposition problems are becoming increasingly serious. The high sulfur-containing gas reservoir fluid contains hydrogen sulfide gas and elemental sulfur, and has strong toxicity and strong corrosiveness. In the exploitation process, the sulfur dissolving capacity of natural gas is reduced along with the reduction of temperature and pressure, so that sulfur crystals are separated out and deposited, corrosion and blockage are caused to a reservoir, a shaft and a ground pipeline, the productivity of a gas well is greatly reduced, and the gas well is forced to reduce and stop production. In addition, once the sulfur blockage is formed at the production manifold, the manifold can be damaged due to corrosion, pressure holding and the like, so that sulfur-containing gas can escape, and serious influence is formed on the life and property safety of people. Therefore, it would be important to address sulfur deposition problems at high sulfur gas well wellbores, surface lines, valves, screens, and the like.
The sulfur dissolving agent blocking removing technology is a set of sulfur deposition treatment method widely adopted at home and abroad at present. Sulfur dissolving agents are mainly divided into two main classes of physical and chemical solvents. Common physical sulfur-dissolving agents are carbon disulfide, carbon tetrachloride, toluene, naphthenes, aromatic hydrocarbons, liquid hydrocarbons, paraffinic mineral oils, petroleum fractions, etc., which are mainly treated for moderate sulfur deposition. The chemical sulfur-dissolving agent has higher sulfur-dissolving capability, is most commonly disulfide solvents, generally takes dimethyl disulfide as a main agent and is assisted with a catalyst, and the purpose of dissolving sulfur is achieved by dimethyl disulfide and sulfur element to form dimethyl polysulfide.
At present, most of foreign application is represented by sulfur dissolving agents of Alberta sulfur institute in Canada and Pennwalt company in U.S.A., which are disulfide solvents and have good sulfur dissolving effect. However, the polysulfide sulfur dissolving agent has strong volatility, strong foul smell and irritation, high toxicity and easy adsorption on clothes and hair, brings inconvenience to field application, and is unfavorable for the health and safety of field staff. Chinese patent CN102408886B discloses a high-efficiency malodor-free sulfur-dissolving agent which mainly comprises sodium hydroxide aqueous solution, sulfolane, N-methylpyrrolidone and N, N-dimethylformamide, and has the advantages of low toxicity, no malodor and a sulfur-dissolving effect, but corrosion problems can be caused by not adding a corrosion inhibitor, and freezing problems can be caused at a low temperature.
1) The disulfide sulfur dissolving agent commonly used at present has strong volatility, strong bad smell and irritation and strong toxicity; 2) The existing commonly used amine sulfur-dissolving agent has small sulfur solubility and slow dissolution speed, and cannot meet the actual requirements; 3) The existing commonly used inorganic alkali sulfur dissolving agent has corrosiveness and strong alkalinity, and is not beneficial to the operation of on-site workers;
4) The existing commonly used sulfur dissolving agent has the problem of secondary sulfur deposition, and has low effective sulfur dissolving efficiency and no long-time persistence; 5) The existing commonly used sulfur dissolving agent has high production cost, poor performance stability and narrow use temperature range.
Therefore, the developed sulfur dissolving agent with low toxicity, environment protection, high efficiency, stable performance, wide use temperature range and corrosion resistance is a key technology for solving the problem of sulfur deposition, so that the problems of the existing sulfur dissolving agent are avoided, and the environmental pressure is relieved.
Disclosure of Invention
The invention aims to provide a low-toxicity high-efficiency environment-friendly sulfur dissolving agent and a preparation method thereof.
In order to achieve the above purpose, the invention is implemented according to the following technical scheme:
the low-toxicity high-efficiency environment-friendly sulfur-dissolving agent comprises 30-85 parts by weight of sodium hydroxide aqueous solution, 10-40 parts by weight of sulfur-dissolving main agent, 1-20 parts by weight of mutual solvent, 0.5-5 parts by weight of anti-settling agent, 0.5-5 parts by weight of foaming agent, 0.5-2 parts by weight of complexing agent and 1-5 parts by weight of corrosion inhibitor.
Preferably, the weight ratio of sodium hydroxide to water in the sodium hydroxide aqueous solution is sodium hydroxide: water=10-30:30-60. The sulfur-dissolving main agent is one or more of N-methyl pyrrolidone, dimethyl sulfoxide, sulfolane, dimethyl disulfide, diaryl disulfide, ethylene glycol monomethyl ether and petroleum ether. The mutual solvent is one or more of N, N-dimethylformamide, N-dimethylacetamide, hexamethylphosphoramide, ethanolamine, triethylene tetramine, N-dimethylpropionamide, diethylformamide, N-methylacetamide and N-ethylacetamide. The anti-settling agent is one or more of fine sand, talcum powder, calcium carbonate powder, bentonite, diatomite, borax, polishing powder, gypsum powder, ceramic glaze powder, dye, pigment, alumina powder, silica powder and starch. The foaming agent is one or more of sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, sodium stearate, polyvinyl alcohol, carboxymethyl cellulose, saponin, fatty polyoxyethylene ether sodium sulfate, fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, alkyl alcohol amide, dodecyl dimethyl betaine, cetyl dimethyl ammonium chloride and octadecyl trimethyl ammonium chloride. The complexing agent is one or more of sodium tripolyphosphate, sodium polyphosphate, sodium hexametaphosphate, sodium pyrophosphate, sodium nitrilotriacetate, diethylenetriamine pentaacetic acid, aminotrimethylene phosphonic acid, dithizone, 8-hydroxyquinoline, phenanthroline, potassium sodium tartrate and ammonium citrate. The corrosion inhibitor is one or more of imidazoline quaternary ammonium salt, amide imidazoline quaternary ammonium salt, heptadecylaminoethyl imidazoline quaternary ammonium salt, undecyl hydroxyethyl imidazoline quaternary ammonium salt, dialkyl imidazoline quaternary ammonium salt, monostearyl imidazoline quaternary ammonium salt and thiourea alkyl imidazoline quaternary ammonium salt.
The preparation method of the low-toxicity high-efficiency environment-friendly sulfur dissolving agent comprises the following steps:
s1: weighing the components according to the weight portion ratio of the components for standby;
s2: adding sodium hydroxide aqueous solution into a reaction kettle, adding a sulfur-dissolving main agent into the reaction kettle, and stirring to completely mix and dissolve the sulfur-dissolving main agent;
s3: after the sulfur-dissolving main agent in the step S2 is completely mixed and dissolved, adding the mutual solvent, the anti-settling agent, the foaming agent, the complexing agent and the corrosion inhibitor into the reaction kettle in sequence, and uniformly stirring to completely dissolve;
s4: stirring for 1-3 h to obtain pale yellow or reddish brown transparent liquid, namely the low-toxicity high-efficiency environment-friendly sulfur dissolving agent.
Preferably, the stirring time in the step S4 is 1.5h.
The beneficial effects of the invention are as follows:
compared with the prior art, the low-toxicity high-efficiency environment-friendly sulfur dissolving agent provided by the invention does not use disulfide such as dimethyl disulfide and the like, has low volatility, no malodorous smell, low irritation, extremely low toxicity and environmental friendliness. The sulfur-dissolving main agent, the mutual solvent and the foaming agent are introduced, so that the sulfur-dissolving main agent has the multi-component synergistic sulfur-dissolving effect, the surface tension is reduced, impurities in the sulfur deposition block are attached to the surfaces of the mineral particles which float upwards selectively, and the system keeps higher activity and has good sulfur-dissolving effect. The addition of the anti-settling agent and the complexing agent not only solves the problem of secondary sulfur deposition in the sulfur dissolving process, but also ensures that the performance of the sulfur dissolving agent is more stable and the sulfur dissolving effect is sustainable due to the complexing effect. The corrosion inhibitor is introduced, so that the corrosiveness is greatly reduced, the health and safety of on-site workers are ensured, and the environmental hazard pressure is relieved.
Compared with the existing sulfur dissolving agent, the low-toxicity high-efficiency environment-friendly sulfur dissolving agent provided by the invention has the advantages of stable performance, wide use temperature range, excellent sulfur dissolving effect at different temperatures, no secondary sulfur deposition in the sulfur dissolving process and sustainable sulfur dissolving effect. The sulfur dissolving amount of 1g sulfur dissolving agent can reach 1.35g at 30 ℃. Can be widely applied to the petrochemical industry field, and is particularly suitable for solving the problem of sulfur deposition at the positions of a well shaft, a ground pipeline, a valve, a screen mesh and the like of a high sulfur-containing gas well.
The low-toxicity high-efficiency environment-friendly sulfur-dissolving agent provided by the invention is prepared by adopting a physical mixing method, and the method has the advantages of simplicity in operation, small environmental impact, stable performance, low cost, convenience in working operation and capability of realizing industrialized mass production.
Drawings
FIG. 1 is a graph showing the effect of the temperature of the present invention on the sulfur dissolution amount and the sulfur dissolution rate of example 3 of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments, wherein the exemplary embodiments and descriptions of the invention are for purposes of illustration, but are not intended to be limiting.
Example 1:
weighing the components according to the weight portion ratio of the components for standby:
82.5 parts of sodium hydroxide aqueous solution, 10 parts of N-methyl pyrrolidone, 5 parts of ethanolamine, 0.5 part of bentonite, 0.5 part of polyvinyl alcohol, 0.5 part of ammonium citrate and 1 part of dialkyl imidazoline quaternary ammonium salt.
Sequentially adding water, sodium hydroxide, N-methylpyrrolidone, ethanolamine, bentonite, polyvinyl alcohol, ammonium citrate and dialkyl imidazoline quaternary ammonium salt into a reaction kettle, uniformly stirring to completely dissolve the components, and continuously stirring for 1.5h to obtain light yellow or reddish brown transparent liquid, thus obtaining the low-toxicity high-efficiency environment-friendly sulfur dissolving agent.
Example 2:
weighing the components according to the weight portion ratio of the components for standby:
70 parts of sodium hydroxide aqueous solution, 15 parts of sulfolane, 10 parts of triethylene tetramine, 1 part of kieselguhr, 1 part of carboxymethyl cellulose, 1 part of sodium polyphosphate and 2 parts of thiourea alkyl imidazoline type quaternary ammonium salt.
Sequentially adding water, sodium hydroxide, sulfolane, triethylene tetramine, diatomite, carboxymethyl cellulose, sodium polyphosphate and thiourea alkyl imidazoline type quaternary ammonium salt into a reaction kettle, uniformly stirring to completely dissolve the materials, and continuously stirring for 1.5h to obtain pale yellow or reddish brown transparent liquid, namely the low-toxicity high-efficiency environment-friendly sulfur dissolving agent.
Example 3:
weighing the components according to the weight portion ratio of the components for standby:
56 parts of sodium hydroxide aqueous solution, 20 parts of dimethyl sulfoxide, 15 parts of N, N-dimethylformamide, 2 parts of borax, 2 parts of sodium dodecyl benzene sulfonate, 2 parts of sodium tripolyphosphate and 3 parts of amide imidazoline quaternary ammonium salt.
Sequentially adding water, sodium hydroxide, dimethyl sulfoxide, N-dimethylformamide, borax, sodium dodecyl benzene sulfonate, sodium tripolyphosphate and amide imidazoline quaternary ammonium salt into a reaction kettle, uniformly stirring to completely dissolve the components, and continuously stirring for 1.5h to obtain pale yellow or reddish brown transparent liquid, namely the low-toxicity high-efficiency environment-friendly sulfur dissolving agent.
Example 4:
weighing the components according to the weight portion ratio of the components for standby:
38 parts of sodium hydroxide aqueous solution, 30 parts of ethylene glycol monomethyl ether, 20 parts of N, N-dimethyl propionamide, 3 parts of borax, 3 parts of sodium dodecyl benzene sulfonate, 2 parts of sodium tripolyphosphate and 4 parts of amide imidazoline quaternary ammonium salt.
Sequentially adding water, sodium hydroxide, ethylene glycol monomethyl ether, N-dimethyl propionamide, borax, sodium dodecyl benzene sulfonate, sodium tripolyphosphate and amide imidazoline quaternary ammonium salt into a reaction kettle, uniformly stirring to completely dissolve the components, and continuously stirring for 1.5h to obtain pale yellow or reddish brown transparent liquid, namely the low-toxicity high-efficiency environment-friendly sulfur dissolving agent.
Example 5:
weighing the components according to the weight portion ratio of the components for standby:
50 parts of sodium hydroxide aqueous solution, 20 parts of dimethyl sulfoxide, 20 parts of N, N-dimethylacetamide, 2 parts of borax, 3 parts of sodium dodecyl benzene sulfonate, 2 parts of sodium tripolyphosphate and 3 parts of amide imidazoline quaternary ammonium salt.
Sequentially adding water, sodium hydroxide, dimethyl sulfoxide, N-dimethylacetamide, borax, sodium dodecyl benzene sulfonate, sodium tripolyphosphate and amide imidazoline quaternary ammonium salt into a reaction kettle, uniformly stirring to completely dissolve the components, and continuously stirring for 1.5h to obtain pale yellow or reddish brown transparent liquid, namely the low-toxicity high-efficiency environment-friendly sulfur-dissolving agent.
Evaluation of sulfur-dissolving agent performance:
according to the above-mentioned method for evaluating the performance of the sulfur-dissolving agent, the sulfur-dissolving performance, the sulfur-dissolving effect, the sulfur-dissolving rate and the corrosion rate of the sulfur-dissolving agent obtained in examples 1 to 5 were evaluated, respectively. The specific evaluation results are as follows:
table 1 shows the results of evaluation of the sulfur-dissolving amounts of the sulfur-dissolving agents in examples 1 to 5 (sulfur-dissolving amounts of 1g of the sulfur-dissolving agents at 30 ℃ C., under normal pressure):
TABLE 1
The experimental data show that the sulfur dissolving performance of the sulfur dissolving agent is ideal, and 1g of the sulfur dissolving agent can be dissolved into 1.35g of elemental sulfur powder at most.
Table 2 shows the evaluation results (room temperature and normal pressure) of the sulfur-dissolving effect of the sulfur-dissolving agent in examples 1 to 5:
TABLE 2
The experimental phenomenon shows that the sulfur dissolving process of the sulfur dissolving agent has strong reaction, high sulfur dissolving speed and obvious sulfur dissolving effect.
Table 3 shows the effect of temperature on the sulfur dissolution amount and the sulfur dissolution rate of the sulfur-dissolving agent, which was obtained by using the sulfur-dissolving agent obtained in example 3, and performing the evaluation of the sulfur dissolution amount and the evaluation of the sulfur dissolution rate at 30℃at 40℃at 50℃at 60℃at 70℃at 80℃respectively, to obtain the sulfur-dissolving agent having the same composition
The amount of dissolved sulfur of 1g of sulfur-dissolving agent and the time taken to dissolve elemental sulfur powder of 50% of the maximum amount of dissolved sulfur are as follows:
TABLE 3 Table 3
Experimental data show that as the temperature increases, the sulfur dissolving amount of the sulfur dissolving agent also increases, the sulfur dissolving time is gradually shortened, and the sulfur dissolving rate is linearly increased.
Table 4 shows the evaluation results (room temperature and normal pressure) of the corrosion rate of the sulfur-dissolving agent in examples 1 to 5:
TABLE 4 Table 4
As can be seen from Table 4, the corrosion rate of the sulfur-dissolving agent to the metal hanger is small and can be almost ignored, and the corrosion rate is gradually reduced along with the increase of the addition amount of the corrosion inhibitor in the embodiment, so that the safety of a construction site is ensured, and the harm of the surrounding environment is relieved.
As shown in FIG. 1, to illustrate the performance of the sulfur dissolving agent of the present invention, the prepared product was subjected to sulfur dissolving performance evaluation, sulfur dissolving effect evaluation, sulfur dissolving speed evaluation and corrosion rate evaluation, respectively.
1. Evaluation of Sulfur dissolution Performance
The sulfur dissolving experiment is carried out under normal pressure and a certain temperature. Will have mass of M 0 Adding the elemental sulfur-like powder into sulfur-dissolving agent with mass of M, stirring and dissolving at a rotating speed of 280r/min, and pouring the mixture of sulfur and sulfur-dissolving agent into the sulfur-dissolving agent with mass of M after the elemental sulfur-like powder is fully dissolved 1 Is filtered through a funnel of filter paper, the filter paper is rinsed with tetrahydrofuran at the corresponding temperature, and then the liquid on the filter paper is dried at low temperature until the mass is constant at M 2 The mass of sulfur remaining on the filter paper was calculated by differential method. Then, the sulfur dissolving amount S= (M) of 1g sulfur dissolving agent was obtained 0 +M 1 －M 2 )/M。
2. Evaluation of Sulfur dissolution Effect
At room normal temperature and normal pressure, 10g of prepared sulfur-dissolving agent sample is taken and placed in a 50mL beaker, then 15g of sulfur deposition block is added, experimental phenomenon in the dissolving process is observed, and the sulfur dissolving effect is evaluated by combining the sulfur dissolving amount. Wherein the sulfur dissolving amount is less than or equal to 5g and indicates poor sulfur dissolving effect, the sulfur dissolving amount is less than 5g and less than 8g and indicates general sulfur dissolving effect, the sulfur dissolving amount is less than or equal to 8g and less than 10g and indicates good sulfur dissolving effect, and the sulfur dissolving amount is more than or equal to 10g and indicates good sulfur dissolving effect.
3. Evaluation of Sulfur dissolution Rate
The sulfur dissolution rate was tested in a room. The sulfur-dissolving agent prepared in the examples at different temperatures was tested for the time it took to dissolve elemental sulfur powder at 50% of the mass of the sulfur-dissolving agent itself.
4. Corrosion Rate evaluation
The experiment was performed using a mass loss method using N80 hanging pieces. The corrosion rate is expressed by the weight lost or added to the sheet metal per unit area, and the formula is calculated: v= (W) 0 -W t ) /St. Wherein W is 0 G, the quality before hanging piece corrosion; w (W) t G, washing away the corrosion products for the hanging piece; s is the surface area of the hanging piece, m 2 The method comprises the steps of carrying out a first treatment on the surface of the t is the time for corrosion to proceed, h.
The technical scheme of the invention is not limited to the specific embodiment, and all technical modifications made according to the technical scheme of the invention fall within the protection scope of the invention.
Claims (10)
1. A low-toxicity high-efficiency environment-friendly sulfur dissolving agent is characterized in that: comprises 30 to 85 parts of sodium hydroxide aqueous solution, 10 to 40 parts of sulfur-dissolving main agent, 1 to 20 parts of mutual solvent, 0.5 to 5 parts of anti-settling agent, 0.5 to 5 parts of foaming agent, 0.5 to 2 parts of complexing agent and 1 to 5 parts of corrosion inhibitor according to parts by weight.
2. The low-toxicity high-efficiency environment-friendly sulfur dissolving agent according to claim 1, which is characterized in that: the weight ratio of sodium hydroxide to water in the sodium hydroxide aqueous solution is that sodium hydroxide is water=10-30:30-60.
3. The low-toxicity high-efficiency environment-friendly sulfur dissolving agent according to claim 1, which is characterized in that: the sulfur-dissolving main agent is one or more of N-methyl pyrrolidone, dimethyl sulfoxide, sulfolane, dimethyl disulfide, diaryl disulfide, ethylene glycol monomethyl ether and petroleum ether.
4. The low-toxicity high-efficiency environment-friendly sulfur dissolving agent according to claim 1, which is characterized in that: the mutual solvent is one or more of N, N-dimethylformamide, N-dimethylacetamide, hexamethylphosphoramide, ethanolamine, triethylene tetramine, N-dimethylpropionamide, diethylformamide, N-methylacetamide and N-ethylacetamide.
5. The low-toxicity high-efficiency environment-friendly sulfur dissolving agent according to claim 1, which is characterized in that: the anti-settling agent is one or more of fine sand, talcum powder, calcium carbonate powder, bentonite, diatomite, borax, polishing powder, gypsum powder, ceramic glaze powder, dye, pigment, alumina powder, silica powder and starch.
6. The low-toxicity high-efficiency environment-friendly sulfur dissolving agent according to claim 1, which is characterized in that: the foaming agent is one or more of sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, sodium stearate, polyvinyl alcohol, carboxymethyl cellulose, saponin, fatty polyoxyethylene ether sodium sulfate, fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, alkyl alcohol amide, dodecyl dimethyl betaine, cetyl dimethyl ammonium chloride and octadecyl trimethyl ammonium chloride.
7. The low-toxicity high-efficiency environment-friendly sulfur dissolving agent according to claim 1, which is characterized in that: the complexing agent is one or more of sodium tripolyphosphate, sodium polyphosphate, sodium hexametaphosphate, sodium pyrophosphate, sodium nitrilotriacetate, diethylenetriamine pentaacetic acid, aminotrimethylene phosphonic acid, dithizone, 8-hydroxyquinoline, phenanthroline, potassium sodium tartrate and ammonium citrate.
8. The low-toxicity high-efficiency environment-friendly sulfur dissolving agent according to claim 1, which is characterized in that: the corrosion inhibitor is one or more of imidazoline quaternary ammonium salt, amide imidazoline quaternary ammonium salt, heptadecylaminoethyl imidazoline quaternary ammonium salt, undecyl hydroxyethyl imidazoline quaternary ammonium salt, dialkyl imidazoline quaternary ammonium salt, monostearyl imidazoline quaternary ammonium salt and thiourea alkyl imidazoline quaternary ammonium salt.
9. A method for preparing the low-toxicity high-efficiency environment-friendly sulfur dissolving agent according to any one of claims 1-8, which is characterized in that: the method comprises the following steps:
s1: weighing the components according to the weight portion ratio of the components for standby;
s2: adding sodium hydroxide aqueous solution into a reaction kettle, adding a sulfur-dissolving main agent into the reaction kettle, and stirring to completely mix and dissolve the sulfur-dissolving main agent;
s3: after the sulfur-dissolving main agent in the step S2 is completely mixed and dissolved, adding the mutual solvent, the anti-settling agent, the foaming agent, the complexing agent and the corrosion inhibitor into the reaction kettle in sequence, and uniformly stirring to completely dissolve;
s4: stirring for 1-3 h to obtain pale yellow or reddish brown transparent liquid, namely the low-toxicity high-efficiency environment-friendly sulfur dissolving agent.
10. The method for preparing the low-toxicity high-efficiency environment-friendly sulfur dissolving agent, which is characterized by comprising the following steps of: the stirring time in the step S4 is 1.5h.
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