CN103616324B - A kind of wet H 2the multiphase flow erosion corrosion test platform of S environment - Google Patents
A kind of wet H 2the multiphase flow erosion corrosion test platform of S environment Download PDFInfo
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Abstract
A kind of wet H
2the multiphase flow erosion corrosion test platform of S environment, comprise gas piping, liquid line, test pipeline and safety attachment pipeline, gas piping, liquid line are connected with test section by mixer, test section outlet is connected with cyclone separator, cyclone separator gas outlet is connected with gas piping, cyclone separator liquid outlet is connected with liquid line by pipeline, and gas piping parts, liquid line parts and developmental tube circuit unit are arranged in safe house entirely, are placed with H in safe house
2s detector, safe house is communicated with the inlet duct of burner by blower fan, burner outlet is connected to alkali lye spray thrower by pipeline, the control method of testing table comprises security control, temperature controls and flow control, testing table and the external world separate by the present invention, the security of the experiment both increased, has effectively processed again the residual gas after test, has safety, saves cost, is easy to the features such as operation.
Description
Technical field
The present invention relates to the technical field of corrosive medium erosion corrosion testing table, be specifically related to a kind of multiphase flow erosion corrosion test platform of Wet H2S environment.
Background technology
In the collection, processing industry of oil and natural gas, wet H
2the multiphase flow erosion corrosion of S medium has become the major reason affecting pipeline or container life-span, the wet H of research
2the erosion corrosion mechanism of S medium and guard technology are significant for the reliability and life-span improving pipeline or container.H
2s gas is hypertoxic gas, the wet H of simulation
2the corrosion test of S environment must pay attention to safety problem.Patents retrieval is as follows:
Multifunctional annular oil-gas-water multiphase flow corrosion simulation test device (CN201210067072.9) does not arrange safe house and corresponding vent gas treatment parts, can not absorb H
2s tail gas.
Pipe flow type liquid/solid double phase flow flushing corrosion (CN00253528.9) does not arrange safe house and corresponding vent gas treatment parts, can not absorb H
2s tail gas.
In alternate oxidation-sulfldation atmosphere, the high temperature corrosion analogue means (CN01248009.6) of engineering steel does not have gas, liquid line, does not arrange safe house and corresponding vent gas treatment parts, can not absorb H
2s tail gas.
A kind of high-temp high-flow-speed outwash experiment equipment (CN01211291.7) does not arrange safe house and corresponding vent gas treatment parts, can not absorb H
2s tail gas.
Simulated petrochemical pipeline erosion-corrosion monitoring test device (CN200920278231.3) does not arrange safe house and corresponding vent gas treatment parts, can not absorb H
2s tail gas.
The loop test device (CN201220726596.X) of simulating the erosion corrosion of rock gas gas phase does not arrange safe house and corresponding vent gas treatment parts, can not absorb H
2s tail gas.
A kind of multiphase flow erosion local corrosion test macro (CN201310116589.7) does not arrange safe house and corresponding vent gas treatment parts, can not absorb H
2s tail gas.
The safety prevention measure of existing similar pilot system, or aftertreatment scheme is all not enough to meet wet H
2the requirement of the corrosion test of S environment.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of wet H
2the multiphase flow erosion corrosion test platform of S environment, can meet wet H
2the requirement of the corrosion test of S environment, has safety, saves cost, is easy to the features such as operation.
In order to achieve the above object, the technical scheme that the present invention takes is:
A kind of wet H
2the multiphase flow erosion corrosion test platform of S environment, comprises gas piping, liquid line, test pipeline, safety attachment pipeline.
In gas piping, gas cylinder 1 is connected in the import of gas-holder 3 by the first stop valve 2, the outlet of gas-holder 3 is connected by the air intake opening of compressor 4 with surge tank 7, the gas outlet of surge tank 7 is successively by the first refrigeratory 9, first pressure transducer 10, first temperature sensor 11, first-class gauge 12 is connected with the air intake opening of mixer 13, first solenoid valve 6 is connected on surge tank 7 by pipeline one end, the other end connects on gas-holder 3, first controller 8 and the first solenoid valve 6, first pressure transducer 10, first temperature sensor 11, first-class gauge 12, first refrigeratory 9 connects,
In liquid line, the outlet of fluid reservoir 22 is connected with the entrance of acid proof pump 20, the outlet of acid proof pump 20 is connected with the inlet of mixer 13 by the second refrigeratory 19, second pressure transducer 17, second temperature sensor 16, second gauge 15 successively, on the discharge pipe that second solenoid valve 21 is connected respectively to acid proof pump 20 by pipeline and fluid reservoir 22, second controller 18 is connected with the second solenoid valve 21, second pressure transducer 17, second temperature sensor 16, second gauge 15, second refrigeratory 19;
In test pipeline, the outlet of mixer 13 is connected with the entrance of test section 14, the outlet of test section 14 is connected with the entrance of cyclone separator 23, and cyclone separator 23 gas outlet is connected with gas-holder 3 by the second stop valve 29, and cyclone separator 23 liquid outlet is connected with fluid reservoir 22 by pipeline.
Described gas piping parts, liquid line parts and developmental tube circuit unit are arranged in safe house 25 entirely, are placed with H in safe house 25
2s detector 24, safe house 25 is communicated with the inlet duct of burner 27 by blower fan 26, and burner 27 exports and is connected to alkali lye spray thrower 31 by pipeline.
Described safety attachment pipeline comprises the first safety valve 5, second safety valve 30 and the 3rd solenoid valve 28, first safety valve 5 is connected on surge tank 7 by pipeline one end, and the other end is connected on the inlet duct of burner 27; Second safety valve 30 is connected on gas-holder 3 by pipeline one end, and the other end is connected on the inlet duct of burner 27; 3rd solenoid valve 28 is connected on gas-holder 3 by pipeline one end, and the other end is connected on burner 27 inlet duct, and the 3rd controller 32 respectively and H
2s detector 24, the 3rd solenoid valve 28 are connected, blower fan 26 is connected.
Described wet H
2the control method of the multiphase flow erosion corrosion test platform of S environment comprises:
Security control: H
2s detector 24 monitors the H in safe house 25
2s concentration, data are imported in the 3rd controller 32, if H
2when S concentration exceedes alarm threshold value, 3rd controller 32 first controls blower fan 26 and increases exhausting flow, and open the 3rd solenoid valve 28, gas in testing table pipe is discharged, carries out harmless process by burner 27 and alkali lye spray thrower 31, and send safety alarm, prompting operator cuts off the power supply of compressor 4 and acid proof pump 20, carry out safe escape or perform other emergency measures, after system pipeline shuts down, the 3rd controller 32 continues to read H
2the Monitoring Data of S detector 24, works as H
2when S concentration is in allowed band, just send the signal that permission personnel enter, and point out operator to delay closedown blower fan 26, burner 27 and alkali lye spray thrower 31;
Temperature controls: in system operation, temperature can raise gradually, for gas piping, first temperature sensor 11 reads pipeline medium temperature, data are sent in the first controller 8, if gas piping temperature is lower than set temperature value, carry out low-temperature warning in the first controller 8, prompting operator reduces the flow of the first refrigeratory 9, or raises the temperature in of heat eliminating medium in the first refrigeratory 9; Otherwise, if gas piping temperature is higher than set temperature value, then improve the flow of the first refrigeratory 9 or reduce the temperature in of the first refrigeratory 9 medium, in like manner, to liquid line, second temperature sensor 16 reads pipeline medium temperature, data are sent in second controller 18, if liquid line temperature is lower than set temperature value, carry out low-temperature warning in second controller 18, prompting operator reduces the flow of the second refrigeratory 19, or raises the temperature in of heat eliminating medium in the second refrigeratory 19; Otherwise, if liquid line temperature is higher than set temperature value, then points out the flow of raising second refrigeratory 19 or reduce the temperature in of the second refrigeratory 19 medium;
Flow control: for liquid line, second gauge 15 reads the volumetric flow rate of pipeline medium, data to be sent in second controller 18 and to carry out calculating and exporting, if fluid flow is lower than setting value, second controller 18 controls the second solenoid valve 21 and closes minor valve, the flow being back to fluid reservoir 22 is reduced, otherwise if flow is higher than setting value, second controller 18 controls the second solenoid valve 21 and opens large valve, the flow being back to fluid reservoir 22 is increased, until stop when flow reaches requirement; For gas piping, first-class gauge 12 reads the volumetric flow rate of pipeline medium, data to be sent in the first controller 8 and to carry out calculating and exporting, if fluid flow is lower than setting value, first controller 12 controls the first solenoid valve 6 and closes minor valve, the flow being back to gas-holder 3 is reduced, otherwise, if flow is higher than setting value, second controller 12 controls the second solenoid valve 6 and opens large valve, and the flow being back to gas-holder 3 is increased, until stop when flow reaches requirement, after flow changes, system temperature can fluctuate, and now needs to carry out temperature control.
Beneficial effect of the present invention is:
1) the present invention designs a complete totally enclosed safe house, testing table and the external world is separated, and prevents poisonous gas to safe house external leakage by blower fan suction, utilizes burner and alkali lye spray to carry out harmless process to poisonous gas, reaches the object of safety and environmental protection.
2) for testing table, the present invention devises method of controlling security, when finding that in safe house, H2S gas concentration exceedes secure threshold, controller sends safety alarm, and automatic Open valve is exhausted, and strengthens blower fan suction flow, prompting operator cuts off the power supply of compressor and acid proof pump, system can be made to be discharged by poisonous gas immediately after generation poisonous gas leaks and to there is no harm reason, without the need to manual intervention, add the security of system.
3) system arranges refrigeratory at gas piping and liquid line, designs corresponding temperature-controlled process, maintains system temperature, the problem that after solving device long-time running, temperature can progressively raise by regulating refrigeratory inlet flow rate and temperature in.
Accompanying drawing explanation
Accompanying drawing is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
With reference to accompanying drawing, a kind of wet H
2the multiphase flow erosion corrosion test platform of S environment, comprises gas piping, liquid line, test pipeline and safety attachment pipeline,
In gas piping, gas cylinder 1 is connected in the import of gas-holder 3 by the first stop valve 2, the outlet of gas-holder 3 is connected by the air intake opening of compressor 4 with surge tank 7, the gas outlet of surge tank 7 is successively by the first refrigeratory 9, first pressure transducer 10, first temperature sensor 11, first-class gauge 12 is connected with the air intake opening of mixer 13, first solenoid valve 6 is connected on surge tank 7 by pipeline one end, the other end connects on gas-holder 3, first controller 8 and the first solenoid valve 6, first pressure transducer 10, first temperature sensor 11, first-class gauge 12, first refrigeratory 9 connects,
In liquid line, the outlet of fluid reservoir 22 is connected with the entrance of acid proof pump 20, the outlet of acid proof pump 20 is connected with the inlet of mixer 13 by the second refrigeratory 19, second pressure transducer 17, second temperature sensor 16, second gauge 15 successively, second solenoid valve 21 is connected respectively on acid proof pump 20 discharge pipe and fluid reservoir 22 by pipeline, and second controller 18 is connected with the second solenoid valve 21, second pressure transducer 17, second temperature sensor 16, second gauge 15, second refrigeratory 19;
In test pipeline, the outlet of mixer 13 is connected with the entrance of test section 14, the outlet of test section 14 is connected with the entrance of cyclone separator 23, and cyclone separator 23 gas outlet is connected with gas-holder 3 by the second stop valve 29, and cyclone separator 23 liquid outlet is connected with fluid reservoir 22 by pipeline.
Described gas piping parts, liquid line parts and developmental tube circuit unit are arranged in safe house 25 entirely, are placed with H in safe house 25
2s detector 24, safe house 25 is communicated with the inlet duct of burner 27 by blower fan 26, and burner 27 exports and is connected to alkali lye spray thrower 31 by pipeline.
Described safety attachment pipeline comprises the first safety valve 5, second safety valve 30 and the 3rd solenoid valve 28, first safety valve 5 is connected on surge tank 7 by pipeline one end, and the other end is connected on the inlet duct of burner 27; Second safety valve 30 is connected on gas-holder 3 by pipeline one end, and the other end is connected on the inlet duct of burner 27; 3rd solenoid valve 28 is connected on gas-holder 3 by pipeline one end, and the other end is connected on burner 27 inlet duct, and the 3rd controller 32 respectively and H
2s detector 24, the 3rd solenoid valve 28 are connected, blower fan 26 is connected.
Principle of work of the present invention is:
When experiment starts, first carry out nitrogen purging, and store a certain amount of actuating medium in fluid reservoir 22 and gas cylinder 1.When boosting, open the first stop valve 2, close the second stop valve 29, what mix in gas cylinder 1 contains H
2s gas enters gas-holder 3, starts compressor 4, by gas inject surge tank 7 and follow-up pipeline, until reach the certain multiple of experimental pressure.Then, close the first stop valve 2, slowly open the second stop valve 29, make to be full of gases at high pressure in gas-holder, the integral pressure in pipeline can drop near experimental pressure.If pressure does not reach test pressure, can replace new in fill the gas cylinder 1 of gases at high pressure, and slowly open the first stop valve 2, close again when pressure still rises to setting value.If pressure is higher than test pressure, slowly can opens the 3rd solenoid valve 28, pipeline gas is discharged, until close again when pressure reaches setting value.
Then, start compressor 4 and acid proof pump 20, gas and liquid are pumped into mixer 13 simultaneously, and mixed medium flows through test section 14, and carries out gas-liquid separation in separation vessel 23, and gas flows into gas-holder 3, and liquid flows into fluid reservoir 22, and fluid media (medium) is circulated.In process of the test, line pressure may reduce gradually, needs at set intervals, opens a stop valve 2, allows the gases at high pressure in gas cylinder 1 pour pipeline, maintains pipeline pressure.
First controller 8 of gas piping reads the data of the first pressure transducer 10, first temperature sensor 11 and first-class gauge 12, by the aperture controlling the first solenoid valve 6, piping flow is regulated, by the inlet flow rate controlling the first refrigeratory 9, line temperature is regulated.
In like manner, the second controller 18 of liquid line reads the data of the second pressure transducer 17, second temperature sensor 16 and second gauge 15, by the aperture controlling the second solenoid valve 21, piping flow is regulated, by the inlet flow rate controlling the second refrigeratory 19, line temperature is regulated.
The medium of gas piping and liquid line mixes in mixer 13, and flows into test section 14, then enters separation vessel 23 and carry out gas-liquid separation.Gas after being wherein separated flows directly into gas-holder 3, and liquid flows directly into fluid reservoir 22.
Whole experimental facilities cover gets up by safe house 25, and form confined space, blower fan 26 aspirates the air in safe house 25, makes to form subnormal ambient, H in room
2s detector 24 detects the H in safe house 25 in real time
2s content, gives the alarm when content overproof, and prompting operator stops compressor 4 and acid proof pump 20, and carries out safe escape or perform other emergency measures.The air that blower fan 26 pumps out flows through burner 27 by pipeline, the H in burner 27 Thorough combustion air
2s, generates SO
2, and neutralized by alkali lye spray thrower 31, last gas enters air, and the alkali lye in alkali lye spray thrower 31 recycles, and supplements fresh solution in time.
In process of the test, H
2s detector 24 monitors the H in safe house 25
2s concentration, data are imported in the 3rd controller 32.If H
2when S concentration exceedes alarm threshold value, the 3rd controller 32 first controls blower fan 26 and increases exhausting flow, and opens the 3rd solenoid valve 28, gas slowly in testing table pipe is discharged, carries out harmless process by burner 27 and alkali lye spray thrower 31.And sending safety alarm, prompting operator cuts off the power supply of compressor 4 and acid proof pump 20, carries out safe escape or performs other emergency measures.
After off-test, the 3rd solenoid valve 28 slowly opened by the 3rd controller 32, and intrasystem gas is progressively flowed out, and after burner 27 burns, recycling alkali lye spray thrower 31 absorbs.3rd controller 32 continues to read H
2the Monitoring Data of S detector 24, works as H
2when S concentration is in allowed band, just send the signal that permission personnel enter, and point out operator to delay closedown blower fan 26, burner 27 and alkali lye spray thrower 31.
Second safety valve 30 and the first safety valve 5 can prevent reservoir overpressure, and the gas leaked out after superpressure flows through burner 27 by pipeline and burns, then by alkali lye spray thrower 31.
The above is only preferred embodiment of the present invention, therefore all equivalences done according to structure, feature and the principle described in patent claim of the present invention change or modify, and are included in patent claim of the present invention.
Claims (2)
1. a wet H
2the multiphase flow erosion corrosion test platform of S environment, comprises gas piping, liquid line, test pipeline and safety attachment pipeline, it is characterized in that:
In gas piping, gas cylinder (1) is connected in the import of gas-holder (3) by the first stop valve (2), the outlet of gas-holder (3) is connected by the air intake opening of compressor (4) with surge tank (7), the gas outlet of surge tank (7) is successively by the first refrigeratory (9), first pressure transducer (10), first temperature sensor (11), first-class gauge (12) is connected with the air intake opening of mixer (13), first solenoid valve (6) is connected on surge tank (7) by pipeline one end, the other end is connected on gas-holder (3), first controller (8) and the first solenoid valve (6), first pressure transducer (10), first temperature sensor (11), first-class gauge (12), first refrigeratory (9) connects,
In liquid line, the outlet of fluid reservoir (22) is connected with the entrance of acid proof pump (20), the outlet of acid proof pump (20) is successively by the second refrigeratory (19), second pressure transducer (17), second temperature sensor (16), second gauge (15) is connected with the inlet of mixer (13), on the discharge pipe that second solenoid valve (21) is connected respectively to acid proof pump (20) by pipeline and fluid reservoir (22), second controller (18) and the second solenoid valve (21), second pressure transducer (17), second temperature sensor (16), second gauge (15), second refrigeratory (19) connects,
In test pipeline, the outlet of mixer (13) is connected with the entrance of test section (14), the outlet of test section (14) is connected with the entrance of cyclone separator (23), cyclone separator (23) gas outlet is connected with gas-holder (3) by the second stop valve (29), and cyclone separator (23) liquid outlet is connected with fluid reservoir (22) by pipeline;
Described gas piping parts, liquid line parts and developmental tube circuit unit arrange that, in safe house (25), safe house is placed with H in (25) entirely
2s detector (24), safe house (25) is communicated with by the inlet duct of blower fan (26) with burner (27), and burner (27) outlet is connected to alkali lye spray thrower (31) by pipeline;
Described safety attachment pipeline comprises the first safety valve (5), the second safety valve (30) and the 3rd solenoid valve (28), first safety valve (5) is connected on surge tank (7) by pipeline one end, and the other end is connected on the inlet duct of burner (27); Second safety valve (30) is connected on gas-holder (3) by pipeline one end, and the other end is connected on the inlet duct of burner (27); 3rd solenoid valve (28) is connected on gas-holder (3) by pipeline one end, and the other end is connected on burner (27) inlet duct, and the 3rd controller (32) respectively and H
2s detector (24), the 3rd solenoid valve (28) are connected, blower fan (26) is connected.
2. one according to claim 1 wets H
2the multiphase flow erosion corrosion test platform of S environment, is characterized in that: described wet H
2the control method of the multiphase flow erosion corrosion test platform of S environment comprises:
Security control: H
2h in S detector (24) monitoring safe house (25)
2s concentration, data are imported in the 3rd controller (32), if H
2when S concentration exceedes alarm threshold value, 3rd controller (32) first controls blower fan (26) and increases exhausting flow, and open the 3rd solenoid valve (28), gas in testing table pipe is discharged, harmless process is carried out by burner (27) and alkali lye spray thrower (31), and send safety alarm, prompting operator cuts off the power supply of compressor (4) and acid proof pump (20), carry out safe escape or perform other emergency measures, after system pipeline shuts down, the 3rd controller (32) continues to read H
2the Monitoring Data of S detector (24), works as H
2when S concentration is in allowed band, just send the signal that permission personnel enter, and point out operator to delay closedown blower fan (26), burner (27) and alkali lye spray thrower (31);
Temperature controls: for gas piping, first temperature sensor (11) reads pipeline medium temperature, data are sent in the first controller (8), if gas piping temperature is lower than set temperature value, first controller carries out low-temperature warning in (8), prompting operator reduces the flow of the first refrigeratory (9), or raises the temperature in of heat eliminating medium in the first refrigeratory (9); Otherwise, if gas piping temperature is higher than set temperature value, then improve the flow of the first refrigeratory (9) or reduce the temperature in of the first refrigeratory (9) medium, in like manner, to with liquid line, second temperature sensor (16) reads pipeline medium temperature, data are sent in second controller (18), if liquid line temperature is lower than set temperature value, second controller carries out low-temperature warning in (18), prompting operator reduces the flow of the second refrigeratory (19), or raises the temperature in of heat eliminating medium in the second refrigeratory (19); Otherwise, if liquid line temperature is higher than set temperature value, then points out the flow of raising second refrigeratory (19) or reduce the temperature in of the second refrigeratory (19) medium;
Flow control: for liquid line, second gauge (15) reads the volumetric flow rate of pipeline medium, data to be sent in second controller (18) and to carry out calculating and exporting, if fluid flow is lower than setting value, second controller (18) controls the second solenoid valve (21) and closes minor valve, the flow being back to fluid reservoir (22) is reduced, otherwise, if flow is higher than setting value, second controller (18) then controls the second solenoid valve (21) and opens large valve, the flow being back to fluid reservoir (22) is increased, until stop when flow reaches requirement, for gas piping, first-class gauge (12) reads the volumetric flow rate of pipeline medium, data to be sent in the first controller (8) and to carry out calculating and exporting, if fluid flow is lower than setting value, first controller (12) controls the first solenoid valve (6) and closes minor valve, the flow being back to gas-holder (3) is reduced, otherwise, if flow is higher than setting value, second controller (12) then controls the second solenoid valve (6) and opens large valve, the flow being back to gas-holder (3) is increased, until stop when flow reaches requirement, after flow changes, system temperature can fluctuate, now need to carry out temperature control.
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| CN103926191B (en) * | 2014-03-26 | 2019-01-04 | 中国石油化工股份有限公司 | Multiphase Flow and fluidised form simulated experiment piping installation and analogue experiment method |
| CN103954549B (en) * | 2014-04-11 | 2017-02-01 | 中国石油化工股份有限公司青岛安全工程研究院 | Gas-liquid double-phase flow pipeline corrosion experiment method |
| CN106378019A (en) * | 2016-10-20 | 2017-02-08 | 福建久策气体集团有限公司 | Preparation device of toxic electronic mixed gas and preparation method thereof |
| CN107167383A (en) * | 2017-04-28 | 2017-09-15 | 中国石油大学(华东) | Circulating HTHP gas-liquid two-phase erosive wear experimental provision and method |
| CN109342301A (en) * | 2018-08-20 | 2019-02-15 | 中国纺织科学研究院有限公司 | Filter bag simulates aging equipment and simulation aging method |
| CN109100476A (en) * | 2018-10-23 | 2018-12-28 | 安徽辰控智能科技有限公司 | A kind of gas sensor detection device |
| CN113466118B (en) * | 2021-07-02 | 2023-04-28 | 兰州城市学院 | Corrosion test device for petroleum conveying equipment |
| CN113702224A (en) * | 2021-08-04 | 2021-11-26 | 常州大学 | Natural gas pipeline inner wall erosion corrosion experimental device and method |
| CN116297149B (en) * | 2023-05-18 | 2023-07-21 | 西南石油大学 | Experimental equipment and method for simulating erosion corrosion of oil and gas field pipeline material |
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