CN102408885A - Efficient sulfur solving agent for sulfur deposits in sulfur-containing gas well - Google Patents
Efficient sulfur solving agent for sulfur deposits in sulfur-containing gas well Download PDFInfo
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- CN102408885A CN102408885A CN2011103109286A CN201110310928A CN102408885A CN 102408885 A CN102408885 A CN 102408885A CN 2011103109286 A CN2011103109286 A CN 2011103109286A CN 201110310928 A CN201110310928 A CN 201110310928A CN 102408885 A CN102408885 A CN 102408885A
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- sulphur
- sodium hydroxide
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Abstract
The invention discloses an efficient sulfur solving agent for sulfur deposits in a sulfur-containing gas well, relating to the field of the sulfur solving agent. The efficient sulfur solving agent is composed of dimethyl disulfide, sodium hydroxide aqueous solution, sodium bisulfide and N, N-dimethylformamide. The efficient sulfur solving agent is high in sulfur solving capability, high in sulfur solving speed and low in cost, and thereby can be widely applied to sulfur solving of sulfur deposits in the well tube of a high sulfur-containing gas well and a surface pipeline. At 25 DEG C, 1 g of sulfur solving agent is capable of solving 1.62 g of sulfur and the time of solving is only 2.27 min; therefore, the sulfur solving effect of the efficient sulfur solving agent is obviously superior to that of the sulfur solving agent in the prior art.
Description
Technical field
The present invention relates to a kind of molten sulphur agent, particularly a kind of efficient molten sulphur agent that is used for sour gas well deposition sulphur.
Background technology
Along with the carrying out of high sulfur-bearing gas field development, the problem of sulphur deposition becomes increasingly conspicuous.The harm of sulphur deposition not only shows the obstruction stratum, reduces rate of permeation, causes gas well deliverability sharply to descend, and forces the gas well underproduction, stopping production.The more important thing is,, will wait the destruction manifold, cause the loss of sulfurous gas, the people's lives and property safety is constituted a serious threat because of burn into builds the pressure in case form " sulphur is stifled " producing manifold.At present, sulphur deposition is very serious in high sour gas well pit shaft and the surface pipeline.
Fisher had proposed dialkyl group disulfide (Merox) for the first time as dissolving the sulphur agent in 1970.Sharp in 1980 works out the non-volatility HMW that uses under the HTHP and dissolves the sulphur agent.Nineteen eighty-two Hyne has reported that benzenethiol sodium-DMF (N, dinethylformamide) catalystsystem dissolves the sulphur agent.Hyne in 1985 has reported that again the NaHS-DMF catalystsystem dissolves the sulphur agent.The mid-80, Canadian Alberta sulphur research company (ASRL) has proposed DMDS-DMF-NaHS and has dissolved sulphur agent system.U.S. Pennwalt company in 1988 has reported that the new catalystsystem of fast leading to of commodity sulphur by name-HT (SULFA-HITECH) dissolves the sulphur agent.The Zhao Ming rising sun in 1994 has reported that DMDS-CTA dissolves sulfur system.Except SULFA-HITECH and the molten sulphur agent of DMDS-DMF-NaHS, it is not high more than to dissolve the molten sulfur content of sulphur agent, and molten sulphur speed is slow.In the time of 25 ℃, the molten sulphur ability that SULFA-HITECH dissolves sulphur agent and the molten sulphur agent of DMDS-DMF-NaHS is respectively the molten sulphur 1.45-1.55g of the molten sulphur agent of 1g, 1.20-1.40 g, and the time all is 30min.
In addition; Amine, dithiocarbonic anhydride, normal heptane, toluene, spindle oil, alkane, aromatic hydrocarbons, N methyldiethanol amine, diethylolamine, N; N-N,N-DIMETHYLACETAMIDE, methyl alcohol etc. also have certain molten sulphur ability; But the molten sulfur content of the molten sulphur agent of 1g all can not surpass 0.3g in the time of 30 ℃, and little, the molten sulphur speed of molten sulfur content is slow, consumption is big, cost is high.
Summary of the invention
Problem to above-mentioned prior art existence; The invention provides a kind of efficient molten sulphur agent that is used for sour gas well deposition sulphur; It is big to dissolve the molten sulfur content of sulphur agent, and molten sulphur speed is fast, cost is low, can be widely used in the processing of sedimentary sulphur in high sour gas well pit shaft and the surface pipeline.
To achieve these goals, the technical scheme of the present invention's employing is such:
A kind of efficient molten sulphur agent that is used for sour gas well deposition sulphur is grouped into by following one-tenth:
NSC 9370;
Aqueous sodium hydroxide solution;
Sodium sulfhydrate;
N, dinethylformamide, DMAC N,N or quadrol;
As preferably, said NSC 9370, aqueous sodium hydroxide solution, Sodium sulfhydrate, N, the parts by weight of dinethylformamide constitute:
NSC 9370 5-30 part;
Aqueous sodium hydroxide solution 6-45 part;
Sodium sulfhydrate 0.01-1.5 part;
N, dinethylformamide, DMAC N,N or quadrol 0.1-2 part;
The weight ratio of sodium hydroxide and water does in the said aqueous sodium hydroxide solution, sodium hydroxide: water=1-10:5-35.
As preferably, said NSC 9370, aqueous sodium hydroxide solution, Sodium sulfhydrate, N, the parts by weight of dinethylformamide constitute:
10 parts of NSC 9370s;
13 parts of aqueous sodium hydroxide solutions;
0.08 part of Sodium sulfhydrate;
N, 0.5 part of dinethylformamide, DMAC N,N or quadrol;
The weight ratio of sodium hydroxide and water does in the said aqueous sodium hydroxide solution, sodium hydroxide: water=3:10.
The chemism that the present invention relates to is following:
CH
3SSCH
3＋xS
CH
3S
X+2CH
3?（1）
CH
3S
X+2CH
3+?xS
CH
3S
2X+2CH
3 （2）
6NaOH+3S
2Na
2S+Na
2SO
3+3H
2O （3）
Na
2S+xS
Na
2S
X+1 （4）
Molten sulphur agent of the present invention is with NSC 9370, aqueous sodium hydroxide solution, Sodium sulfhydrate, N, and dinethylformamide is a raw material, the last composite product that together obtains.Its reaction mechanism mainly is that NSC 9370 (DMDS) chemical solution sulphur and physics dissolve sulphur, and sulphur and sodium hydroxide react in addition, the product Na of reaction
2It is better that S physics dissolves the sulphur effect, DMDS, sodium hydroxide, Na
2S has played collaborative effect of dissolving sulphur, and Sodium sulfhydrate, N, dinethylformamide have played the effect of catalyzer in whole molten sulphur process, add instant sulphur.
In the preparation, concrete steps are at normal temperatures, to dispose aqueous sodium hydroxide solution earlier; Sodium hydroxide is dissolved in a certain amount of water, and mixing speed is 140r/min, stir about 3min; Wait to dissolve complete back and add Sodium sulfhydrate, stir about 3min treats to add NSC 9370, N more successively after the dissolving fully; Dinethylformamide, mix about 3min after, obtain product.
In addition, NSC 9370 does not dissolve with water, when in aqueous sodium hydroxide solution, adding NSC 9370; Can produce immiscible phenomenon, make that the mixing of raw material is not very even, not influence use of the present invention although it is so; But in order to obtain uniform system, can also use alcohol-water mixture, before adding NSC 9370 as solvent; In aqueous sodium hydroxide solution, add a certain amount of ethanol earlier, it is become mix.
Compared with prior art, the invention has the advantages that: it is big that sulfur content is dissolved in this molten sulphur agent, and molten sulphur speed is fast, cost is low, can be widely used in the molten sulphur of sulphur deposition in high sour gas well pit shaft and the surface pipeline.In the time of 25 ℃, 1g dissolves the sulphur agent and dissolves sulphur 1.62g, and the time is merely 2.27min, obviously is superior to dissolving in the prior art the molten sulphur effect of sulphur agent.
Description of drawings
Fig. 1 is temperature and molten sulfur content figure in the embodiment of the invention one;
Fig. 2 is temperature and a molten sulphur time diagram in the embodiment of the invention one;
Fig. 3 is temperature and molten sulfur content figure in the embodiment of the invention two;
Fig. 4 is temperature and a molten sulphur time diagram in the embodiment of the invention two;
Fig. 5 is temperature and molten sulfur content figure in the embodiment of the invention three;
Fig. 6 is temperature and a molten sulphur time diagram in the embodiment of the invention three;
Fig. 7 is temperature and molten sulfur content figure in the embodiment of the invention four;
Fig. 8 is temperature and a molten sulphur time diagram in the embodiment of the invention four.
Embodiment
To combine accompanying drawing that the present invention is described further below.
Embodiment 1:
Earlier the configuration aqueous sodium hydroxide solution is dissolved in 3g sodium hydroxide in the 10g water, treat that sodium hydroxide dissolves fully after; Add the 0.08g Sodium sulfhydrate, after treating to dissolve fully, add 10 g NSC 9370s, 0.5 g N more successively; Dinethylformamide obtains dissolving the sulphur agent.At 25,30,40,50,60,70,80,90 ℃, dissolve the experiment of sublimed sulphur powder respectively, the result sees Fig. 1.At 25,30,40,50,60,70,80,90 ℃, be dissolved in the maximum at each temperature half the sulphur that dissolves sulfur content respectively, dissolve the experiment of sulphur time.The result sees Fig. 2.
Experimental technique and step:
Experiment is to carry out under 1atm, the certain temperature at pressure.With quality is M
0The sublimed sulphur powder join in the molten sulphur agent that quality is M, agitator speed 280r/min after the dissolving fully pours the mixture of sulphur and molten sulphur agent into that quality is housed is M
1The funnel of filter paper in suction filtration, and, at low temperatures with the oven dry of the liquid above the filter paper, be M then up to constant mass with the flushing of the THF under relevant temperature filter paper
2, with the quality of the elemental sulfur that retains above the difference assay calculating filter paper.Obtain the molten sulfur content S:S=(M that 1g dissolves the sulphur agent then
0+ M
1-M
2)/M.
Embodiment 2:
Earlier the configuration aqueous sodium hydroxide solution is dissolved in 10g sodium hydroxide in the 25g water, treat that sodium hydroxide dissolves fully after, add the 0.2g Sodium sulfhydrate, after treating to dissolve fully, add 10 g NSC 9370s, 1.5g N more successively, dinethylformamide obtains dissolving the sulphur agent.At 25,30,40,50,60,70,80,90 ℃, dissolve the experiment of sublimed sulphur powder respectively, the result sees Fig. 3.At 25,30,40,50,60,70,80,90 ℃, be dissolved in the maximum at each temperature half the sulphur that dissolves sulfur content respectively, dissolve the experiment of sulphur time.The result sees Fig. 4.
Experimental technique and step are with embodiment 1.
Embodiment 3:
Earlier the configuration aqueous sodium hydroxide solution is dissolved in 2.5g sodium hydroxide in the 7g water, treat that sodium hydroxide dissolves fully after; Add the 0.06g Sodium sulfhydrate, after treating to dissolve fully, add 10 g NSC 9370s, 0.6 g N more successively; Dinethylformamide obtains dissolving the sulphur agent.At 25,30,40,50,60,70,80,90 ℃, dissolve the experiment of sublimed sulphur powder respectively, the result sees Fig. 5.At 25,30,40,50,60,70,80,90 ℃, be dissolved in the maximum at each temperature half the sulphur that dissolves sulfur content respectively, dissolve the experiment of sulphur time.The result sees Fig. 6.
Experimental technique and step are with embodiment 1.
Embodiment 4:
Earlier the configuration aqueous sodium hydroxide solution is dissolved in 5g sodium hydroxide in the 20g water, treat that sodium hydroxide dissolves fully after, add the 0.15g Sodium sulfhydrate, after treating to dissolve fully, add 12g NSC 9370,1.0g N more successively, dinethylformamide obtains dissolving the sulphur agent.At 25,30,40,50,60,70,80,90 ℃, dissolve the experiment of sublimed sulphur powder respectively, the result sees Fig. 7.At 25,30,40,50,60,70,80,90 ℃, be dissolved in the maximum at each temperature half the sulphur that dissolves sulfur content respectively, dissolve the experiment of sulphur time.The result sees Fig. 8.
Experimental technique and step are with embodiment 1.
Claims (3)
1. efficient molten sulphur agent that is used for sour gas well deposition sulphur is grouped into by following one-tenth:
NSC 9370;
Aqueous sodium hydroxide solution;
Sodium sulfhydrate;
N, dinethylformamide, DMAC N,N or quadrol.
2. a kind of efficient molten sulphur agent that is used for sour gas well deposition sulphur according to claim 1 is characterized in that: said NSC 9370, aqueous sodium hydroxide solution, Sodium sulfhydrate, N, and the parts by weight of dinethylformamide constitute:
NSC 9370 5-30 part;
Aqueous sodium hydroxide solution 6-45 part;
Sodium sulfhydrate 0.01-1.5 part;
N, dinethylformamide, DMAC N,N or quadrol 0.1-2 part;
The weight ratio of sodium hydroxide and water does in the said aqueous sodium hydroxide solution, sodium hydroxide: water=1-10:5-35.
3. a kind of efficient molten sulphur agent that is used for sour gas well deposition sulphur according to claim 2 is characterized in that: said NSC 9370, aqueous sodium hydroxide solution, Sodium sulfhydrate, N, and the parts by weight of dinethylformamide constitute:
10 parts of NSC 9370s;
13 parts of aqueous sodium hydroxide solutions;
0.08 part of Sodium sulfhydrate;
N, 0.5 part of dinethylformamide, DMAC N,N or quadrol;
The weight ratio of sodium hydroxide and water does in the said aqueous sodium hydroxide solution, sodium hydroxide: water=3:10.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140800A (en) * | 2013-10-29 | 2014-11-12 | 中国石油化工股份有限公司 | Sulfur dissolution agent for high sulfur-content gas fields |
| CN105112037A (en) * | 2015-09-02 | 2015-12-02 | 西南石油大学 | Novel normal-temperature efficient sulfur solvent and preparation method thereof |
| CN106706465A (en) * | 2015-11-17 | 2017-05-24 | 中国石油天然气股份有限公司 | Sulfur dissolving agent evaluation device and method using same |
| CN107523284A (en) * | 2017-09-26 | 2017-12-29 | 中国石油化工股份有限公司 | Sour gas well micro-emulsion type high temperature resistant de-plugging agent and preparation method thereof |
| CN108929666A (en) * | 2018-06-25 | 2018-12-04 | 西南石油大学 | A kind of sour gas well efficient blockage removing agent |
| CN115197685A (en) * | 2022-08-17 | 2022-10-18 | 四川申陆达能源工程技术有限公司 | Novel amine sulfur dissolving agent for high-sulfur-content gas field and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0267471A1 (en) * | 1986-10-27 | 1988-05-18 | ATOCHEM NORTH AMERICA, INC. (a Pennsylvania corp.) | Apparatus for removing sulfur from organic polysulfides |
| EP0289950A2 (en) * | 1987-05-08 | 1988-11-09 | ATOCHEM NORTH AMERICA, INC. (a Pennsylvania corp.) | Polyalkyleneoxyamine catalysts for dialkyl disulfides and/or polysulfides used in dissolving sulfur |
| EP0289951A2 (en) * | 1987-05-08 | 1988-11-09 | ATOCHEM NORTH AMERICA, INC. (a Pennsylvania corp.) | Sulfur dissolving composition |
-
2011
- 2011-10-14 CN CN2011103109286A patent/CN102408885A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0267471A1 (en) * | 1986-10-27 | 1988-05-18 | ATOCHEM NORTH AMERICA, INC. (a Pennsylvania corp.) | Apparatus for removing sulfur from organic polysulfides |
| EP0289950A2 (en) * | 1987-05-08 | 1988-11-09 | ATOCHEM NORTH AMERICA, INC. (a Pennsylvania corp.) | Polyalkyleneoxyamine catalysts for dialkyl disulfides and/or polysulfides used in dissolving sulfur |
| EP0289951A2 (en) * | 1987-05-08 | 1988-11-09 | ATOCHEM NORTH AMERICA, INC. (a Pennsylvania corp.) | Sulfur dissolving composition |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140800A (en) * | 2013-10-29 | 2014-11-12 | 中国石油化工股份有限公司 | Sulfur dissolution agent for high sulfur-content gas fields |
| CN104140800B (en) * | 2013-10-29 | 2018-07-27 | 中国石油化工股份有限公司 | A kind of molten sulphur agent of amine for high sulfur Gas Fields |
| CN105112037A (en) * | 2015-09-02 | 2015-12-02 | 西南石油大学 | Novel normal-temperature efficient sulfur solvent and preparation method thereof |
| CN105112037B (en) * | 2015-09-02 | 2018-06-29 | 西南石油大学 | A kind of room temperature sulphur solvent and preparation method thereof |
| CN106706465A (en) * | 2015-11-17 | 2017-05-24 | 中国石油天然气股份有限公司 | Sulfur dissolving agent evaluation device and method using same |
| CN106706465B (en) * | 2015-11-17 | 2019-07-05 | 中国石油天然气股份有限公司 | Molten sulphur agent evaluating apparatus and the method for using it |
| CN107523284A (en) * | 2017-09-26 | 2017-12-29 | 中国石油化工股份有限公司 | Sour gas well micro-emulsion type high temperature resistant de-plugging agent and preparation method thereof |
| CN108929666A (en) * | 2018-06-25 | 2018-12-04 | 西南石油大学 | A kind of sour gas well efficient blockage removing agent |
| CN108929666B (en) * | 2018-06-25 | 2020-11-03 | 西南石油大学 | Efficient blocking remover for sulfur-containing gas well |
| CN115197685A (en) * | 2022-08-17 | 2022-10-18 | 四川申陆达能源工程技术有限公司 | Novel amine sulfur dissolving agent for high-sulfur-content gas field and preparation method thereof |
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Application publication date: 20120411 |