CN206161465U - Experimental device for confirm to contain different group assignments's of heavy hydrocarbon coal gas absorption volume - Google Patents
Experimental device for confirm to contain different group assignments's of heavy hydrocarbon coal gas absorption volume Download PDFInfo
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- CN206161465U CN206161465U CN201621173945.4U CN201621173945U CN206161465U CN 206161465 U CN206161465 U CN 206161465U CN 201621173945 U CN201621173945 U CN 201621173945U CN 206161465 U CN206161465 U CN 206161465U
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Abstract
The utility model relates to an experimental device for confirm to contain different group assignments's of heavy hydrocarbon coal gas absorption volume, including automatic distributing device, holding vessel, gas chromatograph, automatic gaseous collection system, vacuum pump, coal sample tank, thermostated container, tee bend valve, cross valve, connect to form a complete experimental apparatus, the buggy laboratory sample that will prepare places in coal sample tank, utilizes this experimental apparatus to measure CH4 and C2H6 respectively and under the different component distribution ratios and the different adsorption equilibrium pressure circumstances, draws CH4 and the respective adsorbance of C2H6 fast. The device can perfect and richen many first gas absorption desorptions theory, understands coal bed gas reservoir mechanism in depth, and evaluation development of coal -bed gas potentiality promote reservoir simulation research.
Description
Technical field
This utility model is related to safety of coal mines exploitation field, more particularly to a kind of to determine the different component proportioning of coal containing heavy hydrocarbon
Gas absorption amount experimental provision.
Background technology
Coal bed gas belongs to Unconventional gas, mainly with adsorbed state preservation and coal seam.Coal bed gas is a kind of novel cleaning
Net energy source, exploits this energy to protecting the living environment of the mankind, solving coal mining safety problem, the Implement of sustainable development etc.
All tool is of great significance.China Coal Bed Methane Resource rich reserves, according to coal bed gas resource evaluation result in 2006, China buried
Deep 2000m is with shallow Coal bed gas project as 36.8 × 1012m3, occupy second place of the world.
The key component of coal bed gas is CH4, accessory constituent contains CO2、N2With heavy hydrocarbon (C2+) etc., coal is except adsorbing CH4
Outward, moreover it is possible to CO absorption2、N2、C2H6、C3H8Deng gas.Coalbed Methane In China component is more based on dry gas, but Pan Jiang, E Dong, Flos Bombacis Malabarici
There is dampness etc. scala media coal area, coal bed gas composition exception, heavy hydrocarbon concentration reaches 5%-43%.Heavy hydrocarbons gas component in coal seam
Content be followed successively by from high to low：C2H6、C3H8、C4H10, wherein C2H6Component accounts for more than the 90% of heavy hydrocarbon gas.Therefore adopt
Pure methane gas carry out the sorption and desorption isotherm experiment of coal, and the adsorption-desorption characteristics of the coal seam reservoirs for being obtained are unable to authentic representative coal
The truth of reservoir.If when accordingly to judge Coal bed gas project, coal seam reservoirs characterisitic parameter and evaluate Coalbed Methane Productivity, gesture
Cbm development must be affected.
At present, laboratory mainly carries out the test of methane adsorption amount with the adsorbent equipment of one-component, for coal containing heavy hydrocarbon
Layer gas Isothermal Adsorption Characteristics have no report, it is therefore proposed that a kind of test gas absorption amount for the laboratory containing heavy hydrocarbon coal seam
Method is extremely necessary.
The content of the invention
Technical problem to be solved in the utility model is to provide a kind of gas of the determination different component proportioning of coal containing heavy hydrocarbon
The experimental provision of adsorbance, can quickly determine in the lab the gas absorption of the different component proportioning of coal sample containing heavy hydrocarbon
Amount, can improve and enrich multicomponent gas adsorption-desorption theory, understand coal bed gas accumulative mechanism in depth, evaluate cbm development and dive
Power, promotes reservoir simulation research.
To solve above-mentioned technical problem, this utility model provides a kind of gas of the determination different component proportioning of coal containing heavy hydrocarbon
The experimental provision of adsorbance, including automated gas divider, holding vessel, gas chromatograph, automatic gas harvester, vacuum pump,
Coal sample tank, calorstat, three-way valve, four way valve, automated gas divider is connected with holding vessel by the first connecting tube, storage
Tank is connected with three-way valve by the second connecting tube, and three-way valve is connected with vacuum pump by the 3rd connecting tube, three-way valve
Door is connected with four way valve by the 4th connecting tube, and four way valve is connected with gas chromatograph by the 5th connecting tube, and four
Port valve door is connected with automatic gas harvester by the 6th connecting tube, and four way valve passes through the 7th connecting tube phase with coal sample tank
Connection, wherein the first connecting tube is provided with the first high pressure valve, the 4th connecting tube is provided with the second high pressure valve, the 5th connecting tube
The 3rd high pressure valve is provided with, the 6th connecting tube is provided with the 4th high pressure valve, and the 7th connecting tube is provided with the 5th high pressure valve,
The coal sample tank is located in calorstat.
3rd connecting tube is provided with vacuometer.
Pressure gauge is connected with the coal sample tank.
This utility model has the advantages that compared with prior art：Experimental provision of the present utility model and experiment side
Method can quickly determine in the lab the gas absorption amount of the different component proportioning of coal sample containing heavy hydrocarbon, improve and abundant polynary
Gas absorption desorbing is theoretical, understands coal bed gas accumulative mechanism in depth, evaluates cbm development potentiality, promotes reservoir simulation research.
Description of the drawings
Fig. 1 is the structural representation of this utility model experimental provision；
Fig. 2 is the experimental result curve chart of this utility model embodiment laboratory sample.
Specific embodiment
To make the purpose of this utility model, technical scheme and beneficial effect clearer, below in conjunction with the accompanying drawings to this practicality
New embodiment is described in further detail.
As shown in figure 1, this utility model provides a kind of gas absorption amount of the determination different component proportioning of coal containing heavy hydrocarbon
Experimental provision, including automated gas divider 1, holding vessel 2, gas chromatograph 3, automatic gas harvester 4, vacuum pump 5, coal sample
Tank 6, calorstat 7, three-way valve 8, four way valve 9, automated gas divider 1 is connected with holding vessel 2 by the first connecting tube 10,
Holding vessel 2 is connected with three-way valve 8 by the second connecting tube 11, and three-way valve 8 passes through the phase of the 3rd connecting tube 12 with vacuum pump 5
Connection, three-way valve 8 is connected with four way valve 9 by the 4th connecting tube 13, and four way valve 9 and gas chromatograph 3 pass through the
Five connecting tubes 14 are connected, and four way valve 9 is connected with automatic gas harvester 4 by the 6th connecting tube 15, four way valve 9
It is connected by the 7th connecting tube 16 with coal sample tank 6, wherein the first connecting tube 10 is provided with the first high pressure valve 17, the 4th connection
Pipe 13 is provided with the second high pressure valve 18, and the 5th connecting tube 14 is provided with the 3rd high pressure valve 19, and the 6th connecting tube 15 is provided with
4th high pressure valve 20, the 7th connecting tube 16 is provided with the 5th high pressure valve 21, and the coal sample tank 6 is located in calorstat 7.
3rd connecting tube 12 is provided with vacuometer 22, is easy to show the vacuum pressure pressure in whole experimental provision.
Pressure gauge 23 is connected with the coal sample tank 6, is easy to show the gas atmosphere pressure in coal sample tank.
When using, operate according to following steps：
The first step：To be crushed and sieved from the coal sample of collection in worksite first, make coal powder size for 0.17mm～
The laboratory sample of 0.25mm, is then balanced moisture solution by coal dust laboratory sample, weighs 100g laboratory samples and loads coal sample
In tank 6, and encapsulation process is carried out, finally the coal sample tank 6 of good seal is positioned in calorstat 7.
Second step：The air-tightness of checking experiment device, confirms that experimental provision does not have after gas leakage situation, opens the first high pressure valve
The 17, second high pressure valve 18 of door, the 3rd high pressure valve 19, the 4th high pressure valve 20, the 5th high pressure valve 21, open vacuum pump 5
Evacuation process is carried out to whole device, when the vacuum that gauge 22 shows is less than 10Pa, stops evacuation.
3rd step：The temperature of calorstat 7 is set as into 20 DEG C, open the first high pressure valve 17, the second high pressure valve 18, the
Four high pressure valves 20, the 5th high pressure valve 21, close the 3rd high pressure valve 19, using automated gas divider 1 respectively by pure gas
CH4With pure gas C2H6In being filled with coal sample tank 6, and the suction of gas in coal sample tank 6 is observed by the pressure gauge 23 on coal sample tank 6
Enclosure pressure, and reach required different adsorption equilibrium pressure, in the present embodiment its adsorption equilibrium pressure be respectively set as 1MPa,
2MPa, 3MPa, 4MPa, 5MPa, 6MPa, 7MPa, 8MPa, 9MPa, are surveyed respectively by holding vessel 2 and automatic gas harvester 4
Go out pure gas CH4With pure gas C2H6Respective adsorbance, using Langmuir models CH is obtained4Langmuir volumes and
Langmuir pressure and C2H6Langmuir volumes and Langmuir pressure.
4th step：Using automated gas divider 1 by CH4Molar fraction and C2H6Molar fraction be divided into four
Different component proportions are planted, the temperature of calorstat 7 is set as into 20 DEG C, then open the first high pressure valve 17, the second high pressure valve
The 18, the 4th high pressure valve 20 of door, the 5th high pressure valve 21, close the 3rd high pressure valve 19, carry out adsorption isotherm experiment, this enforcement
By CH in example4Molar fraction and C2H6Molar fraction distribution ratio be divided into 95%:5%th, 80%:20%th, 60%:
40%th, 50%:50%.
Work as CH4Molar fraction and C2H6Molar fraction distribution ratio be 95%:When 5%, when in coal sample tank 6
Laboratory sample adsorption equilibrium after, under reaching different adsorption equilibrium pressure conditions, adsorption equilibrium pressure point in the present embodiment
0.54MPa, 1.76MPa, 2.95MPa, 4.59MPa, 6.72MPa, 8.15MPa are not set as it.Close the first high pressure valve 17,
Two high pressure valves 18, the 4th high pressure valve 20, open the 3rd high pressure valve 19, the 5th high pressure valve 21, using gas chromatograph 3
The free phase mole fraction of binary mixture is determined, the first high pressure valve 17, the second high pressure valve 18, three-hypers is then shut off
Pressure valve 19, opens the 4th high pressure valve 20, the 5th high pressure valve 21, is measured by holding vessel 2 and automatic gas harvester 4
Different CH4Molar fraction and C2H6The total adsorbance of Molar fraction distribution ratio.
Same operating process, works as CH4Molar fraction and C2H6Molar fraction distribution ratio be 80%:
20%, when adsorption equilibrium pressure is respectively set as 0.61MPa, 1.64MPa, 2.85MPa, 4.64MPa, 6.83MPa, 8.03MPa,
Measure different CH4Molar fraction and C2H6The total adsorbance of Molar fraction distribution ratio.
Work as CH4Molar fraction and C2H6Molar fraction distribution ratio be 60%:40%, adsorption equilibrium pressure
When being respectively set as 0.59MPa, 1.72MPa, 2.77MPa, 4.50MPa, 6.61MPa, 8.08MPa, different CH are measured4Volume
Molar fraction and C2H6The total adsorbance of Molar fraction distribution ratio.
Work as CH4Molar fraction and C2H6Molar fraction distribution ratio be 50%:50%, adsorption equilibrium pressure
It is respectively set as measuring different CH when 0.71MPa, 1.70MPa, 2.91MPa, 4.55MPa, 6.79MPa, 8.10MPa4Volume
Molar fraction and C2H6The total adsorbance of Molar fraction distribution ratio.
By different CH4Molar fraction and C2H6Molar fraction distribution ratio, setting different adsorption equilibriums
The statistical data of total adsorbance is as shown in table 1 under pressure.
Wherein when automated gas divider 1 adds gas into air accumulator 2, the first high pressure valve 17 of control and automatically
The reading of the upward pressure table of air distributing device 1 can be calculated accurately into the gas flow in air accumulator 2, and with this CH is realized4With
C2H6Accurate distribution ratio, here air accumulator 2 be only used as the device of an interim storage gas, air accumulator 2 pairs enters coal sample tank
Gas in 6 plays a part of a reference pair and shines.
5th step：Using separation relation formulaAnd x1+x2=100%, four kinds of differences can be obtained
Each component absorption phase mole fraction during component proportion, surveys according to mass conservation law and binary mixture adsorption isotherm experiment
Fixed total adsorbance, you can calculate CH respectively4And C2H6Respective adsorbance, its experimental data is as shown in table 1.
In formula：xi、xjRepresent the molar fraction of component i, j in absorption phase, yi、yjRepresent component i, j in free phase
Molar fraction, VLi、VLjRepresent the Langmuir volumes of gas i, j, PLi、PLjRepresent the Langmuir pressure of gas i, j.
The CH of table 14And C2H6Adsorbed phase concentration and adsorbance of the mixed gas difference distribution ratio in adsorption isotherm experiment
6th step：The CH of four kinds of different component proportionings is calculated respectively4Absorption phase mole fraction and C2H6Absorption phase mole point
Several ratio γ, and γ is returned with the data of corresponding adsorption equilibrium pressure P, obtain exponential function relationParameter A, B in exponential relationship, C and different component proportioning x are returned simultaneously, is obtained A=0.29x+
0.38, B=0.58x+0.55, C=0.25x+2.35, bring parameter A, B, C into γ again, obtain
7th step：As shown in Fig. 2 to CH under four kinds of different component proportionings4With C2H6Absorption total amount, according to Langmuir moulds
Type is fitted, and can obtain respective Langmuir volumes and Langmuir pressure, Ran Houyu under four kinds of different component proportionings
Different component proportioning x is fitted, and obtains the binary mixture adsorbance total in adsorption equilibrium pressure P and is：Simultaneous equationsY+z=
100%.
By equation y
+ z=100% simultaneous gets up, in formula：Represent CH4、C2H6Respective adsorbance；Y represents CH in binary mixture4
Absorption molar fraction；Z represents C in binary mixture2H6Absorption molar fraction.Therefore, in known CH4And C2H6Gaseous mixture
During body distribution ratio, CH under different adsorption equilibrium pressure P can be quickly obtained4With C2H6Respective adsorbance.
Experimental provision of the present utility model can quickly determine in the lab the different component proportioning of coal sample containing heavy hydrocarbon
Gas absorption amount, it is theoretical to improve and enrich multicomponent gas adsorption-desorption, understands coal bed gas accumulative mechanism in depth, evaluates coal
Layer gas potentiality to be exploited, promotes reservoir simulation research.
, to limit parts, those skilled in the art should for the word such as " first ", " second " used in this patent
Know：" first ", the use of " second " are intended merely to facilitate description this utility model and simplify description, and above-mentioned word does not have
Special implication.
Ultimate principle of the present utility model, principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry it should be appreciated that this utility model is not restricted to the described embodiments, described in above-described embodiment and description
Simply illustrate principle of the present utility model, this utility model can also on the premise of without departing from this utility model spirit and scope
There are various changes and modifications, these changes and improvements are both fallen within the range of claimed utility model.This utility model is required
Protection domain is defined by appending claims and equivalent.
Claims (3)
1. it is a kind of determine the different component proportioning of coal containing heavy hydrocarbon gas absorption amount experimental provision, it is characterised in that：Including automatic
Air distributing device, holding vessel, gas chromatograph, automatic gas harvester, vacuum pump, coal sample tank, calorstat, three-way valve, four
Port valve door, automated gas divider is connected with holding vessel by the first connecting tube, and holding vessel is connected with three-way valve by second
Pipe is connected, and three-way valve is connected with vacuum pump by the 3rd connecting tube, and three-way valve is connected with four way valve by the 4th
Pipe is connected, and four way valve is connected with gas chromatograph by the 5th connecting tube, four way valve and automatic gas harvester
It is connected by the 6th connecting tube, four way valve is connected with coal sample tank by the 7th connecting tube, wherein setting in the first connecting tube
There is the first high pressure valve, the 4th connecting tube is provided with the second high pressure valve, the 5th connecting tube is provided with the 3rd high pressure valve, the 6th
Connecting tube is provided with the 4th high pressure valve, and the 7th connecting tube is provided with the 5th high pressure valve, and the coal sample tank is located in calorstat.
2. it is according to claim 1 it is a kind of determine the different component proportioning of coal containing heavy hydrocarbon gas absorption amount experimental provision,
It is characterized in that：3rd connecting tube is provided with vacuometer.
3. it is according to claim 2 it is a kind of determine the different component proportioning of coal containing heavy hydrocarbon gas absorption amount experimental provision,
It is characterized in that：Pressure gauge is connected with the coal sample tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621173945.4U CN206161465U (en) | 2016-11-02 | 2016-11-02 | Experimental device for confirm to contain different group assignments's of heavy hydrocarbon coal gas absorption volume |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621173945.4U CN206161465U (en) | 2016-11-02 | 2016-11-02 | Experimental device for confirm to contain different group assignments's of heavy hydrocarbon coal gas absorption volume |
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| CN206161465U true CN206161465U (en) | 2017-05-10 |
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ID=58657042
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621173945.4U Expired - Fee Related CN206161465U (en) | 2016-11-02 | 2016-11-02 | Experimental device for confirm to contain different group assignments's of heavy hydrocarbon coal gas absorption volume |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763774A (en) * | 2019-03-28 | 2020-02-07 | 武汉网锐检测科技有限公司 | Device and method for testing hydrogen evolution and absorption performance of ointment |
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2016
- 2016-11-02 CN CN201621173945.4U patent/CN206161465U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763774A (en) * | 2019-03-28 | 2020-02-07 | 武汉网锐检测科技有限公司 | Device and method for testing hydrogen evolution and absorption performance of ointment |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170510 Termination date: 20191102 |
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| CF01 | Termination of patent right due to non-payment of annual fee |