CN102614814A - In-parallel reaction kettles and reaction-kettle-based device for testing induction time of hydrates - Google Patents
In-parallel reaction kettles and reaction-kettle-based device for testing induction time of hydrates Download PDFInfo
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- CN102614814A CN102614814A CN2012100686036A CN201210068603A CN102614814A CN 102614814 A CN102614814 A CN 102614814A CN 2012100686036 A CN2012100686036 A CN 2012100686036A CN 201210068603 A CN201210068603 A CN 201210068603A CN 102614814 A CN102614814 A CN 102614814A
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Abstract
The invention relates to in-parallel reaction kettles and a reaction-kettle-based device for testing the induction time of hydrates, and belongs to the technical field of hydrates. The in-parallel reaction kettles are arranged annularly and comprise eight equidistant high pressure-resistant stainless steel reaction kettles, wherein an upper flange plug and a lower flange plug are arranged on each reaction kettle; an interface is formed in the center of an upper flange and is used for connecting a temperature sensing system (a thermoelectric couple); a lower flange is provided with an interface for the injection of air and liquid and vacuumizing; and different hydrates can be added into the reaction kettles to generate induction factor impact factors. The testing device consists of the in-parallel reaction kettles, a temperature control system, an air supply pressurization system, a liquid supply system, a computer data acquisition system, a vacuum pump and a safety valve. By the in-parallel reaction kettles and the reaction kettle-based device, influencing factors of induction time in the process of generating the hydrates can be measured, the condition of the influence of each induction factor on the generation of the hydrates can be found, and the problem of long test period due to slow generation of the hydrates is solved. Simultaneously, the influence degree of different influencing factors on the induction time in the process of generating the hydrates can be tested accurately and efficiently by combining a cross-over experiment.
Description
Technical field
The invention belongs to the Application of Hydrate technical field, relate to a kind of hydrate formation induction time testing arrangement and parallel agitated reactor.
Background technology
Gas hydrates are considered to a kind of cleaning, potential energy source efficiently, and reserves are very abundant.At submarine sedimentary strata and permafrost area discover gas hydrates, scholarly forecast China's natural gas hydrate reserves are huge in succession in China.
The accurate assessment of gas hydrates reservoir is most important to its exploitation.The boring method of coring is one of effective appraisal procedure.In process was cored in boring, because the variation meeting of temperature, pressure is with the formation and the decomposition of gas hydrates, this accuracy to assessment had very big influence.The accurate measurement of gas hydrates induction time is significant to the accuracy of analyzing gas hydrates forming process, raising evaluation of reservoirs.
Hydrate natural gas accumulating (NGH) is effective long-distance transport scheme, has the advantage of economy, energy-saving and environmental protection.Study different factors to the influence of gas hydrates generative process induction time be solve gas hydrates fast, a large amount of generation, and then realize the key of NGH.
Serious day by day along with greenhouse effects, collecting carbonic anhydride with seal technology (CCS) up for safekeeping and received widely and paying close attention to.Carbon dioxide (CO
2) the efficient capture be to realize CO
2The key link of sealing up for safekeeping.Hydrate CO
2Trapping technique is applicable to fossil-fuelled power plant flue gas (CO
2/ N
2) and combustible gas (CO
2/ H
2) middle CO
2Capture, it is thought the long-term CO of tool potentiality by USDOE (DOE)
2Trapping technique.Accurately test CO under the different operating modes
2The hydrate induction time is to CO
2Efficient, rapid acquiring is most important.Study CO under the different operating modes simultaneously
2The induction time of hydrate formation is for analyzing CO under the on-the-spot storage condition
2The formation and the migration rule of hydrate are significant.
The scientific research personnel has obtained certain achievement in hydrate induction time technical field of measurement and test at present; But still there is following problem in existing hydrate induction time testing arrangement in implementation process: control variate method; Experimental repeatability is poor, can not get rid of repeatedly experimental temperature, pressure and change the influence that brings; Because environmental change (temperature, pressure), it is bigger repeatedly to decide the working condition experimenting error of averaging; Hydrate generates slow, and experimental period is long; Device dismounting difficulty etc.
Summary of the invention
The invention provides a kind of parallel agitated reactor and reach survey hydrate formation induction time testing arrangement based on this parallel agitated reactor.For hydrate formation induction time test provide one reliably, test macro efficiently, solved the interference problem of various influence factors in the hydrate induction time test process, and; Utilize it to the influence factor of hydrate induction time and influence mechanism analysis, for various hydrate utilization technology are established theoretical foundation.
Technical scheme of the present invention is:
A kind of parallel agitated reactor, this parallel agitated reactor adopts annular high pressure resistant stainless steel structure, on parallel agitated reactor loop configuration, is divided into to be furnished with 8 separate high pressure resistant stainless sub-agitated reactors, can freely dismantle; Each sub-agitated reactor all comprises upper and lower ring flange plug, and wherein the upper flange plate center is provided with a connector and is used for injecting gas, liquid and vacuumizes, and the lower flange center is provided with an interface everywhere and is used to connect thermocouple.Can add porous media according to different demands in the agitated reactor, hydrates such as catalyst generate the inducement factor of influence.
The hydrate formation induction time testing arrangement of above-mentioned parallel agitated reactor; It comprises an aforesaid parallel agitated reactor, air feed pressure charging system, computer data acquisition system, liquid conveying system, temperature control system, temperature sensor, pressure sensor, vavuum pump and safety valve.
Wherein through upper flange plate water/gas inlet agitated reactor, can gather in real time and deal with data by computer data acquisition system with experimental gas for the air feed pressure charging system, its comprise one with thermocouple, pressure transmitter, and pass to industrial computer to data of gathering and handle.
Wherein, temperature control system be one with the thermostat of agitated reactor in being included in, control the temperature of agitated reactor through the temperature of ethylene glycol in the control thermostat.The air feed pressure charging system comprises a vavuum pump and a gas boosting pump, is connected with parallel agitated reactor pipeline after vavuum pump and the safety valve parallel connection, and the gas boosting pump is connected with the intake interface of parallel agitated reactor through flowmeter.Wherein, vavuum pump can be extracted impurity in the parallelly connected agitated reactor out before experiment, gets rid of unnecessary influence; Pressure-reducing valve and gas boosting pump can be with the control of experimental gas pressure within the required range.Experimental gas gets into agitated reactor after the pressurization of air feed pressure charging system.
Safety valve links to each other with parallel agitated reactor pipeline, in order to the pressure in the experimental provision is maintained below the system design temperature, has guaranteed experiment safety.
Effect of the present invention is the mechanism that influences that a kind of hydrate formation induction time test macro and parallel agitated reactor can be realized the different factors of disposable test with benefit, has reduced experiment number, has improved conventional efficient.Measure repeatedly in the time of also can deciding operating mode, reduce experimental error, operating mode error with imitating that avoided repeated test to cause a certain influence factor.Solved since hydrate generated slow, the problem that the test period is long.Combine cross-over experiment can test the influence degree of different affecting factors accurately and efficiently simultaneously to hydrate generative process induction time.
Description of drawings
Fig. 1 is a kind of hydrate formation induction time testing arrangement structured flowchart.
Fig. 2 is a kind of hydrate formation induction time testing arrangement structural representation.
Fig. 3 is the structural representation of parallel agitated reactor.
Fig. 4-the 1st, the front view of parallel agitated reactor.
Fig. 4-the 2nd, the vertical view of parallel agitated reactor.
Among the figure: 1 parallel agitated reactor; The 2CO2/H2 gas cylinder; 3a gas boosting pump; The 3b liquid booster pump; 4 gas flowmeters; 5a first controllable valve; 5b second controllable valve; 5c the 3rd controllable valve; 5d the 4th controllable valve; 5e the 5th controllable valve; 6 vavuum pumps; 7 safety valves; 8 pressure-reducing valves; 9 pressure transmitters; 10 thermocouples; 11 industrial computers; 12 experiment pipelines; 13 triple valves; 14 valves; 15 agitated reactors; 16 screws; 17 thermocouples; 18 upper flange plates; 19 lower flanges; The total thermocouple output line of 20 parallel agitated reactors; 21 single agitated reactors; 22 triple valves; 23 parallel agitated reactor water/gas injects main valve; 24 parallel agitated reactor water/gas inlets.
The specific embodiment
Be described in detail the specific embodiment of the present invention below in conjunction with technical scheme and accompanying drawing.
Shown in Figure 1 is parallel agitated reactor operation principle block diagram, and its course of work is: experiment test gas is imported in the parallel agitated reactor after the supercharging of gas boosting pump; According to the kind of the inducement of testing,, design and control each sub-agitated reactor build-in test operating mode in the parallel agitated reactor by principle of orthogonal experiment; Whole system is placed in the thermostat and makes an experiment, and accurately controls temperature and impels hydrate to form and decomposition; Reacting kettle inner pressure, temperature are measured by pressure transmitter, thermocouple, and temperature, pressure signal are by computer data acquisition system collection and real-time analysis, and then the rise time of calculated hydration thing.
Shown in Figure 2 is the system diagram of hydrate formation induction time testing arrangement, explains by system shown in the figure below:
(1) the temperature control system course of work is: before the experiment beginning whole system is placed on a period of time in the thermostat, reaches requirement of experiment until the temperature signal of thermocouple assay.
(2) gas-liquid injection process: open valve 5c, 5d injects parallel agitated reactor with water, after filling with, valve-off 5c treats that thermocouple is after temperature is test temperature, to open pressure-reducing valve 8, and valve 5a, 5b are with CO
2/ H
2Gas injects, and shows that until pressure transmitter numerical value reaches requirement.
(3) the computer data acquisition system course of work is: thermocouple 10, pressure transmitter 9, flowmeter 4 collect analog signals such as the temperature, pressure, mixed gas flow of each and every one agitated reactor, and these signals are transmitted computer and calculate.
(4) the induction time test process is: through the pressure and temp situation of change that analysis computer calculates, confirm hydrate rise time (induction time) and record.
Fig. 3 is the cutaway view of sub-agitated reactor 21, and through the independence of valve 14 each sub-agitated reactor of realization, each sub-agitated reactor all is connected into parallel agitated reactor through its supporting triple valve 13, and thermocouple 17 is used to test the temperature of each sub-agitated reactor.
Fig. 4-1, Fig. 4-2 are depicted as the agitated reactor structure chart.23 is that parallel agitated reactor water/gas injects main valve; 24 is parallel agitated reactor water/gas inlet; Each sub-agitated reactor is separate, is connected by a triple valve to get into parallel agitated reactor.
Claims (4)
1. parallel agitated reactor is characterized in that: parallel agitated reactor (1) adopts annular high pressure resistant stainless steel structure, is divided on parallel agitated reactor (1) loop configuration and is furnished with 8 separate sub-agitated reactors; Each sub-agitated reactor comprises upper and lower ring flange plug, and wherein upper flange plate (18) center is provided with water/gas inlet, and lower flange (19) center is provided with an interface and is used to connect thermocouple (17).
2. hydrate formation induction time testing arrangement based on the said parallel agitated reactor of claim 1; It is characterized in that: comprise a parallel agitated reactor, air feed pressure charging system, computer data acquisition system, liquid conveying system, temperature control system, temperature sensor (9), pressure sensor (10), vavuum pump (6) and safety valve (7);
Said air feed pressure charging system with experimental gas through upper flange plate (18) water/gas inlet agitated reactor;
Said computer data acquisition system can be gathered and deal with data in real time, its comprise one with thermocouple (10), pressure transmitter (9), and pass to industrial computer (11) to data of gathering and handle.
3. a kind of hydrate formation induction time testing arrangement according to claim 2 and parallel agitated reactor is characterized in that: said temperature control system is one parallel agitated reactor is included in interior thermostat.
4. a kind of hydrate formation induction time testing arrangement according to claim 2 and parallel agitated reactor; It is characterized in that: said air feed pressure charging system comprises a vavuum pump (6) and a gas boosting pump (3a), and vavuum pump (6) links to each other with parallel agitated reactor (1) pipeline with safety valve (7) parallel connection back; Gas boosting pump (3a) is connected with the intake interface (24) of parallel agitated reactor (1) through flowmeter (4).
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374878A (en) * | 2014-11-10 | 2015-02-25 | 大连理工大学 | Experimental device for forming hydrate in combined multi-phase fluid pipeline |
| CN106442930A (en) * | 2016-10-31 | 2017-02-22 | 华南理工大学 | Device and method for accurately observing gas hydrate induction time |
| CN110111668A (en) * | 2018-02-01 | 2019-08-09 | 中国石油大学(北京) | More kettle interconnection type Gas Hydrate Deposition/exploitation analogue simulation devices and purposes |
| CN110252222A (en) * | 2019-06-06 | 2019-09-20 | 山东科技大学 | More saturation degree lanthanum chloride hydrates, decomposition run device and method under triaxial stress |
| CN111239361A (en) * | 2020-01-20 | 2020-06-05 | 中国石油大学(华东) | Accurate measurement device for hydrate generation induction time and application thereof |
| CN112362690A (en) * | 2020-11-06 | 2021-02-12 | 西南石油大学 | Hydrate generation induction time measuring device |
| WO2021103237A1 (en) * | 2019-11-29 | 2021-06-03 | 中国科学院广州能源研究所 | Experimental device and method for carbon dioxide sequestration on seabed by hydrate method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374878A (en) * | 2014-11-10 | 2015-02-25 | 大连理工大学 | Experimental device for forming hydrate in combined multi-phase fluid pipeline |
| CN104374878B (en) * | 2014-11-10 | 2015-11-18 | 大连理工大学 | In combined type heterogeneous fluid pipeline, hydrate generates experimental provision |
| CN106442930A (en) * | 2016-10-31 | 2017-02-22 | 华南理工大学 | Device and method for accurately observing gas hydrate induction time |
| CN110111668A (en) * | 2018-02-01 | 2019-08-09 | 中国石油大学(北京) | More kettle interconnection type Gas Hydrate Deposition/exploitation analogue simulation devices and purposes |
| CN110111668B (en) * | 2018-02-01 | 2021-02-05 | 中国石油大学(北京) | Multi-kettle interconnection type natural gas hydrate accumulation/exploitation simulation device and application |
| CN110252222A (en) * | 2019-06-06 | 2019-09-20 | 山东科技大学 | More saturation degree lanthanum chloride hydrates, decomposition run device and method under triaxial stress |
| WO2021103237A1 (en) * | 2019-11-29 | 2021-06-03 | 中国科学院广州能源研究所 | Experimental device and method for carbon dioxide sequestration on seabed by hydrate method |
| CN111239361A (en) * | 2020-01-20 | 2020-06-05 | 中国石油大学(华东) | Accurate measurement device for hydrate generation induction time and application thereof |
| CN112362690A (en) * | 2020-11-06 | 2021-02-12 | 西南石油大学 | Hydrate generation induction time measuring device |
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Application publication date: 20120801 |