CN103712905B - For the experimental system that trace impurity in high temperature and pressure experiment supplements - Google Patents
For the experimental system that trace impurity in high temperature and pressure experiment supplements Download PDFInfo
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- CN103712905B CN103712905B CN201310727832.9A CN201310727832A CN103712905B CN 103712905 B CN103712905 B CN 103712905B CN 201310727832 A CN201310727832 A CN 201310727832A CN 103712905 B CN103712905 B CN 103712905B
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Abstract
The present invention relates to a kind of experimental system of supplementing for trace impurity in high temperature and pressure experiment, this experimental system comprises mixing gas cylinder, supercharge pump, air compressor machine, high pressure storage tank, highly pressurised liquid volume pump, high-temperature high-pressure reaction kettle, alkali liquor absorption pond; Mixing gas cylinder is connected with the air intake opening of supercharge pump by mixed gas export pipeline; Air compressor machine is connected with the power input port of supercharge pump by power intake pipeline, and supercharge pump connects the air intake opening of high pressure storage tank by supercharging intake pipeline; The gas outlet of high pressure storage tank is made up line by foreign gas and to be connected with high-temperature high-pressure reaction kettle air intake opening; Highly pressurised liquid volume pump is connected with high-temperature high-pressure reaction kettle liquid inlet by liquid input tube line; High-temperature high-pressure reaction kettle gas outlet is connected with alkali liquor absorption pond air intake opening by gas outlet pipe line, and gas outlet, alkali liquor absorption pond is connected with Purge gas vent line.The supplementary foreign gas in corrosion reaction system of Absorbable organic halogens of the present invention: avoid pressure transient problem.
Description
Technical field
The invention belongs to corrosion experimental device field, particularly, relate to a kind of experimental system of supplementing for trace impurity in high temperature and pressure experiment, in high temperature and high pressure experimentation, the moisture of gas that is sustainable or intermittently supplement trace and trace.
Background technology
Carbon trapping and (CarbonCaptureandStorage, be called for short CCS) technology of sealing up for safekeeping are the cutting edge technologies that of great potential slows down greenhouse gas emission.This technology is by the CO of trapping
2inject Oil/gas Well and improve the rate of oil and gas recovery (CO
2-EOR), applied more than 30 year in the U.S., and domestic CNPC and Sinopec are carried out at multiple oil gas field and have been utilized CO
2improve the guide-testing well-teams of oil recovery rate, all achieve good effect.CO
2conveying is as CO
2from trapping to store ground intermediate hub, be one of gordian technique of carbon sequestration.Medium and long distance carries CO on a large scale
2generally by CO
2be separated and be compressed to supercriticality (CO
2critical point: 31.06 DEG C, 7.38MPa) after utilize Cemented filling, be most economical, effective method.But, supercritical CO
2the internal corrosion problem of conveyance conduit is one of key factor of restriction CCS development and application.At supercritical CO
2in corrosion environment, CO
2main body, minor amount of water wherein, O
2, SO
x, NO
xit is then the principal element of bringing out corrosive pipeline Deng impurity.
At present, lab simulation supercritical CO
2conveyance conduit corrosion experiment generally all carries out in high-temperature high-pressure reaction kettle.Due to supercritical CO
2the H contained in gas
2o, O
2, SO
x, NO
xconcentration Deng impurity is very low, and in experimentation, moisture and foreign gas constantly consume, and concentration must be caused to reduce or approach exhaustion, be difficult to the length determining this consumption process.Report from current research, no matter experimental period length, because trace impurity supplements more difficult, people often ignore the change of impurity concentration to the impact of corrosion, give tacit consent to concentration within whole experimental period and do not change, therefore, the accuracy of the experimental result obtained is worth discussion, and especially long period experiment, to the corrosion later stage, impurity concentration reduces, and must cause the distortion of corrosion rate.Especially, water is the key factor of impact corrosion, and when liquid water content reduces, even after approach exhaustion, lack enough moisture, corrosion reaction will stop, and have a strong impact on corrosion experiment result.Due to supercritical CO
2conveyance conduit is in a kind of corrosion environment of high pressure, will reach this supercriticality in simulating lab test process, often needs to be increased in high-temperature high-pressure reaction kettle by gas with supercharge pump.But the supercharging of employing supercharge pump is the process of a lasting supercharging, after reaching setup pressure value, cannot maintain pressure stability.Therefore, it is infeasible for directly using supercharge pump to continue to supplement foreign gas or maintain pressure stability.In addition, need, before high temperature and pressure experiment starts, in advance water be added in high-temperature high-pressure reaction kettle, carry out, in process, can not high-temperature high-pressure reaction kettle being dismantled in experiment, therefore, cannot keep the skin wet in reactor in whole experimentation.These factors finally may cause the distortion of experimental data above, thus cause the experimental result guarded.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of experimental system of supplementing for trace impurity in high temperature and pressure experiment; Coordinated with Pressure-stabilizing pressure reducing table by high pressure storage tank, continue in operating high-temperature high-pressure reaction kettle or the supplementary foreign gas of interval; By highly pressurised liquid volume pump, the moisture of supplement trace in operating high-temperature high-pressure reaction kettle.
For achieving the above object, the present invention adopts following scheme:
For the experimental system that trace impurity in high temperature and pressure experiment supplements, comprising: mixing gas cylinder, supercharge pump, air compressor machine, high pressure storage tank, highly pressurised liquid volume pump, high-temperature high-pressure reaction kettle, alkali liquor absorption pond;
Mixing gas cylinder is connected with the air intake opening of supercharge pump by mixed gas export pipeline;
Air compressor machine is connected with the power input port of supercharge pump by power intake pipeline, and supercharge pump connects the air intake opening of high pressure storage tank by supercharging intake pipeline;
The gas outlet of high pressure storage tank is made up line by foreign gas and to be connected with high-temperature high-pressure reaction kettle air intake opening;
Highly pressurised liquid volume pump is connected with high-temperature high-pressure reaction kettle liquid inlet by liquid input tube line;
High-temperature high-pressure reaction kettle gas outlet is connected with alkali liquor absorption pond air intake opening by gas outlet pipe line,
Gas outlet, alkali liquor absorption pond is connected with Purge gas vent line.
Relative to prior art, the present invention has following advantage:
1, the supplementary foreign gas in corrosion reaction system of Absorbable organic halogens: in high pressure storage tank, squeeze into the foreign gas higher than experiment set pressure in advance.By regulating Pressure-stabilizing pressure reducing table output pressure, pressure stability can be maintained.
2, the pressure transient problem caused directly to supercharging in high-temperature high-pressure reaction kettle by supercharge pump is effectively avoided.Solve conventional high temperature autoclave in experimentation, cannot the problem of supplement trace moisture.
3, this experimental system is easy to operate, all applicable for long and short cycle corrosion experiment, does not have an impact to corrosion reaction system, effectively can improve the accuracy of experimental result.
Accompanying drawing explanation
Fig. 1 is the experimental system of supplementing for trace impurity in high temperature and pressure experiment.
Embodiment
As shown in Figure 1, for the experimental system that trace impurity in high temperature and pressure experiment supplements, comprising: mixing gas cylinder 1, supercharge pump 2, air compressor machine 3, high pressure storage tank 4, highly pressurised liquid volume pump 5, high-temperature high-pressure reaction kettle 6, alkali liquor absorption pond 7.
The mixed gas of experiment containing trace impurity is housed in mixing gas cylinder 1, and mixing gas cylinder 1 is connected with the air intake opening of supercharge pump 2 by mixed gas export pipeline 12, and mixing gas cylinder 1 provides foreign gas by mixed gas export pipeline 12 to supercharge pump 2 air intake opening; Mixed gas export pipeline 12 is provided with decompression table 121, and decompression table 121 controls the outlet pressure of mixing gas cylinder 1.
Air compressor machine 3 is connected with the power input port of supercharge pump 2 by power intake pipeline 23, and air compressor machine 3 provides driving force to increase pump 2.
Supercharge pump 2 connects the air intake opening of high pressure storage tank 4 by supercharging intake pipeline 24, and supercharge pump 2 should have good acid-resistant corrosion and sealing, and high pressure storage tank 4 is made up of stainless steel.The gas outlet of high pressure storage tank 4 is made up line by foreign gas and 46 to be connected with high-temperature high-pressure reaction kettle 6 air intake opening, and foreign gas makes up line and 46 is provided with Pressure-stabilizing pressure reducing table 461.The poly-doped impurity gas higher than experiment set pressure increasing pump 2 and be pressed into is housed in high pressure storage tank 4.Regulate Pressure-stabilizing pressure reducing table 461 to experiment set pressure, being made up line by foreign gas 46 stablely in high-temperature high-pressure reaction kettle 6 exports gas.
Highly pressurised liquid volume pump 5 is connected with high-temperature high-pressure reaction kettle 6 liquid inlet by liquid input tube line 56.Liquid input tube line 56 end should be processed into taper, is coated with coating of wax at cone point, ensures that droplet size is stablized.The time controling liquid input quantity inputted by metering liquid.
High-temperature high-pressure reaction kettle 6 gas outlet is connected with alkali liquor absorption pond 7 air intake opening by gas outlet pipe line 67, and gas outlet pipe line 67 is provided with exhaust and regulates decompression table 671.Regulate exhaust to regulate decompression table 671, slowly exhaust (1 second 2 ~ 3 bubble), ensure gas circulation in high-temperature high-pressure reaction kettle 9, realize supplementing of foreign gas in experimentation.
Gas outlet, alkali liquor absorption pond 7 is connected with Purge gas vent line 8, and Purge gas vent line 8 discharges purified gas, protection of the environment.
Mixed gas export pipeline 12, supercharging intake pipeline 24, foreign gas make up line 46, liquid input tube line 56, gas outlet pipe line 67, Purge gas vent line 8 are made by stainless steel.
Apparatus of the present invention are mainly used for supplementing of trace impurity in high temperature and pressure experiment, the poly-doped impurity gas higher than experiment set pressure stored in high pressure storage tank, by regulating, Pressure-stabilizing pressure reducing table is stable exports gas, ensures the supplementary foreign gas continued in high-temperature high-pressure reaction kettle in experimentation or interval is stable.Micro-moisture needed for experiment, by regulating highly pressurised liquid volume pump, is supplemented in experimental system as required.Like this, after impurity concentration reduces in high temperature and pressure experiment process, can be supplemented in time, be maintained the stable of impurity concentration in whole experimentation, reduce the impact of impurity concentration change on corrosion process, guarantee the accuracy of experimental result.
Claims (1)
1. for the experimental system that trace impurity in high temperature and pressure experiment supplements, comprising: mixing gas cylinder, supercharge pump, air compressor machine, high pressure storage tank, highly pressurised liquid volume pump, high-temperature high-pressure reaction kettle and alkali liquor absorption pond; It is characterized in that: mixing gas cylinder is connected with the air intake opening of supercharge pump by mixed gas export pipeline; Air compressor machine is connected with the power input port of supercharge pump by power intake pipeline, and supercharge pump connects the air intake opening of high pressure storage tank by supercharging intake pipeline; The gas outlet of high pressure storage tank is made up line by foreign gas and to be connected with high-temperature high-pressure reaction kettle air intake opening; Highly pressurised liquid volume pump is connected with high-temperature high-pressure reaction kettle liquid inlet by liquid input tube line; High-temperature high-pressure reaction kettle gas outlet is connected with alkali liquor absorption pond air intake opening by gas outlet pipe line, and gas outlet, alkali liquor absorption pond is connected with Purge gas vent line; Mixed gas export pipeline is provided with decompression table; Foreign gas makes up line and is provided with Pressure-stabilizing pressure reducing table; Gas outlet pipe line is provided with exhaust and regulates decompression table; Mixed gas export pipeline, supercharging intake pipeline, foreign gas make up line, liquid input tube line, gas outlet pipe line and Purge gas vent line are made by stainless steel; High pressure storage tank is made up of stainless steel; Liquid input tube line end should be processed into taper, is coated with coating of wax at cone point.
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|---|---|---|---|
| CN201310727832.9A CN103712905B (en) | 2013-12-25 | 2013-12-25 | For the experimental system that trace impurity in high temperature and pressure experiment supplements |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310727832.9A CN103712905B (en) | 2013-12-25 | 2013-12-25 | For the experimental system that trace impurity in high temperature and pressure experiment supplements |
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| Publication Number | Publication Date |
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| CN103712905A CN103712905A (en) | 2014-04-09 |
| CN103712905B true CN103712905B (en) | 2016-03-23 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435546A (en) * | 2011-09-07 | 2012-05-02 | 中国核动力研究设计院 | Supercritical autoclave bubbling deoxygenation system |
| CN202471565U (en) * | 2012-03-14 | 2012-10-03 | 东北石油大学 | High temperature and high pressure H2S/CO2 corrosion reaction device capable of realizing dynamic electrochemical test |
| CN102928330A (en) * | 2012-11-09 | 2013-02-13 | 南京钢铁股份有限公司 | Experimental device for simulating corrosion of crude oil tank of goods oil tanker and experimental method of experimental device |
| CN203658228U (en) * | 2013-12-25 | 2014-06-18 | 中国石油大学(华东) | Experimental system for trace impurity supplementary for high-temperature high-pressure experiments |
-
2013
- 2013-12-25 CN CN201310727832.9A patent/CN103712905B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435546A (en) * | 2011-09-07 | 2012-05-02 | 中国核动力研究设计院 | Supercritical autoclave bubbling deoxygenation system |
| CN202471565U (en) * | 2012-03-14 | 2012-10-03 | 东北石油大学 | High temperature and high pressure H2S/CO2 corrosion reaction device capable of realizing dynamic electrochemical test |
| CN102928330A (en) * | 2012-11-09 | 2013-02-13 | 南京钢铁股份有限公司 | Experimental device for simulating corrosion of crude oil tank of goods oil tanker and experimental method of experimental device |
| CN203658228U (en) * | 2013-12-25 | 2014-06-18 | 中国石油大学(华东) | Experimental system for trace impurity supplementary for high-temperature high-pressure experiments |
Non-Patent Citations (1)
| Title |
|---|
| 超临界二氧化碳萃取中试装置的工艺改进;李昶红等;《化工进展》;20041231;第23卷(第11期);1.2 工艺流程设计，2 主要功能设计及结构设计，2.2 缓冲釜设计，图1 * |
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| CN103712905A (en) | 2014-04-09 |
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