CN103382441B - Experimental device and experimental method for detecting content of marsh gas produced at different stirring speeds - Google Patents
Experimental device and experimental method for detecting content of marsh gas produced at different stirring speeds Download PDFInfo
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- CN103382441B CN103382441B CN201310230617.8A CN201310230617A CN103382441B CN 103382441 B CN103382441 B CN 103382441B CN 201310230617 A CN201310230617 A CN 201310230617A CN 103382441 B CN103382441 B CN 103382441B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention provides an experimental device and an experimental method for detecting the content of marsh gas produced from fermentation raw materials at different stirring speeds, and belongs to the technical field of marsh gas. The invention solves the technical problems of poor experimental accuracy and inconvenient operation in a conventional experimental device and a conventional experimental method. The experimental device for detecting the content of the marsh gas produced from the fermentation raw materials at the different stirring speeds includes a horizontal workbench, a first constant temperature magnetic stirrer, a second constant temperature magnetic stirrer, a first collection container and a second collection container; the first constant temperature magnetic stirrer is provided with a first fermentation raw material container, and the second constant temperature magnetic stirrer is provided with a second fermentation raw material container. The experimental method includes the steps: A, preparing the fermentation raw materials; B, adding the fermentation raw materials; C, adding water, D, setting stirring speeds; E, setting time; F, recording experimental data; and G, obtaining experimental data. The experimental device has the advantages of high experimental accuracy, high automation level and the like, and the experimental method has the advantages of high experimental precision, convenient operation and the like.
Description
Technical field
The invention belongs to technical field of methane, relating to a kind of experimental installation and method for producing methane quantity under detecting different stirring velocity.
Background technology
Along with expanding economy, people use the excess load of Nonrenewable resources, make various countries all be faced with acid test to energy problem, and the energy also becomes the important leverage of various countries' sustainable economic development.Biogas is a kind of clean energy in China rural area, it utilizes the waste straw of farm crop to produce through fermentation, it can be used for heating up water, cooking, and can save the natural resourcess such as a large amount of fire coals, timber for the mankind, and the biogas after burning can not produce pollution to environment.
At present, general existing methane-generating pit or tank for sewage gas all utilize fermentation raw material to produce biogas, the generation efficiency of biogas is general is relevant to the stirring velocity of fermentation raw material temperature, fermentation raw material concentration and fermentation raw material, in order to learn fermentation raw material is under which kind of stirring velocity, produce the most effective of biogas, therefore, need to design a kind of detect different stirring velocity under produce experimental installation and the experimental technique of methane quantity.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose a kind of experimental installation that simultaneously can draw two groups of different stirring velocity bottom fermentation raw materials product methane quantity, this experimental installation also has the feature that experiment accuracy is high, automatization level is high.
Another object of the present invention be to provide a kind of detect different stirring velocity under produce the experimental technique of methane quantity, this experimental technique has simple to operate, that experiment accuracy is high feature.
First object of the present invention realizes by following technical proposal: a kind of detect different stirring velocity under produce the experimental installation of methane quantity, comprise a horizontal table, it is characterized in that, described horizontal table is placed with constant temperature blender with magnetic force one, constant temperature blender with magnetic force two, for collecting the collection container one of biogas and the collection container two for collecting biogas, described constant temperature blender with magnetic force one is provided with the fermentation raw material container one for storing fermentation raw material, described constant temperature blender with magnetic force two is provided with the fermentation raw material container two for storing fermentation raw material, described collection container one and collection container two are two identical containers, described fermentation raw material container one and fermentation raw material container two are two identical containers, described fermentation raw material container one top has opening one, described fermentation raw material container two top has opening two, described collection container one top has collects mouth one, described collection container two top has collects mouth two, the sealing member one that opening one can be closed is provided with in described fermentation raw material container one, the sealing member two that opening two can be closed is provided with in described fermentation raw material container two, the partition member one that the cavity volume sealed separation in collection container one can be become upper cavity volume and lower cavity volume is provided with in described collection container one, the partition member two that the cavity volume sealed separation in collection container two can be become upper cavity volume and lower cavity volume is provided with in described collection container one, described partition member one is identical with the elemental height of partition member two, in the lower container of described collection container one and in the lower container of collection container one, the water of equal amts is housed, collection tube one is provided with between described fermentation raw material container one and collection container one, one end of described collection tube one by sealing member one through the cavity volume entering into fermentation raw material container one, and collection tube one and fermentation raw material container one keep sealing, the other end of described collection tube one is connected with the lower cavity volume of collection container one, and collection tube one and collection container one keep sealing, collection tube two is provided with between described fermentation raw material container two and collection container two, one end of described collection tube two by sealing member two through the cavity volume entering into fermentation raw material container two, and collection tube two and fermentation raw material container two keep sealing, the other end of described collection tube two is connected with the lower cavity volume of collection container two, and collection tube two and collection container two keep sealing, be provided with laser ranger one in the upper cavity volume of described collection container one, the Laser emission mouth of laser ranger one is vertically towards described partition member one, be provided with laser ranger two in the upper cavity volume of described collection container two, the Laser emission mouth of laser ranger two is vertically towards described partition member one, and described laser ranger one is all identical with the distance between horizontal table with laser ranger two, described constant temperature blender with magnetic force one is connected with tachogenerator one, described constant temperature blender with magnetic force two is connected with tachogenerator two, described tachogenerator one by described sealing member one through entering in described fermentation raw material container one, described tachogenerator two by described sealing member two through entering in described fermentation raw material container two, be respectively arranged with magnetic valve one and magnetic valve two in described collection tube one and collection tube two, described horizontal table is also provided with PLC, described magnetic valve one is all connected with described PLC with magnetic valve two.
Described collection container one and collection container two are all cylindrically, described laser ranger one is fixed with backstay one, the length of described backstay one is greater than the diameter of described collection container one, described laser ranger one is in the upper cavity volume of collection container one, and the two ends of described backstay one act on the upper surface of collection container one; Described laser ranger two is fixed with backstay two, the length of described backstay two is greater than the diameter of described collection container two, described laser ranger two is in the upper cavity volume of collection container two, and the two ends of described backstay two act on the upper surface of collection container two.
Described collection container one and the outer wall of collection container two are provided with scale marks.
Be provided with a conduit one in described collection container one, the upper end of described conduit one is in above the water surface, and the lower end of described conduit one seals with above-mentioned collection tube one and is communicated with; Be provided with a conduit two in described collection container two, the upper end of described conduit two is in above the water surface, and the lower end of described conduit two seals with above-mentioned collection tube two and is communicated with.
Described sealing member one, sealing member two, partition member one and partition member two all adopt elastomeric material to make.
Second object of the present invention realizes by following technical proposal: a kind of detect different stirring velocity under produce the experimental technique of methane quantity, this experimental technique comprises:
A, preparation fermentation raw material: fermentation raw material market bought existing fermentation raw material or oneself allocate and make, as the fermentation raw material of experiment.
B, add fermentation raw material: be poured into respectively in fermentation raw material container one and fermentation raw material container two by identical two parts of fermentation raw materials, and opening one and opening two closed with sealing member one and sealing member two.
C, add water: be poured into respectively in collection container one and collection container two by identical two parts of water, and partition member one and partition member two are adjusted to identical height.
D, stirring velocity is set: stirring velocity value one is set in constant temperature blender with magnetic force one, constant temperature blender with magnetic force two is arranged and stirring velocity is worth not identical stirring velocity and is worth two.
E, setting-up time: in PLC, set a time value, when the aerogenesis time reaches the time value of this setting, PLC Controlling solenoid valve one and magnetic valve two are closed simultaneously, and collection container one and collection container two stop collecting biogas.
F, record experimental data: laser ranger one measures the distance value one between itself and partition member one, records this distance value one, and laser ranger two measures the distance value two between itself and partition member two, records this distance value two.
G, draw experimental data: compare distance value one and distance value two, numerical value is larger, and methane gas producing amount is less on the contrary.
Repeatedly carry out above-mentioned experiment, can show fermentation raw material is under what stirring velocity, and its gas production rate is best.Also can calculate, in concrete stirring velocity, the concrete gas production rate of every cubic metre of fermentation raw material.
Compared with prior art, the present invention has the following advantages:
1, measure by laser ranger one and laser ranger two distance that partition member one and partition member two move up, measuring accuracy is high.
2, the stirring velocity of fermentation raw material in fermentation raw material container one and fermentation raw material container two is controlled by constant temperature blender with magnetic force one and constant temperature blender with magnetic force two, control accuracy is high, under making the stirring velocity of fermentation raw material in fermentation raw material container one and fermentation raw material container two be in constant stirring velocity all the time, experiment accuracy is higher.
3, come automatically to close collection tube one and collection tube two by PLC simultaneously, reduce the error that manual operations brings, improve experiment accuracy.
4, this experimental technique producing methane quantity under detecting different stirring velocity is tested by PLC and laser ranger one, simple to operate, experiment accuracy high.
Accompanying drawing explanation
Fig. 1 is the structural representation of this experimental installation.
In figure, 1, horizontal table; 2, constant temperature blender with magnetic force one; 3, constant temperature blender with magnetic force two; 4, fermentation raw material container one; 5, fermentation raw material container two; 6, collection container one; 7, collection container two; 8, sealing member one; 9, sealing member two; 10, partition member one; 11, partition member two; 12, laser ranger one; 13, laser ranger two; 14, tachogenerator one; 15, tachogenerator two; 16, collection tube one; 17, collection tube two; 18, magnetic valve one; 19, magnetic valve two; 20, backstay one; 21, backstay two; 22, conduit one; 23, conduit two.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As shown in Figure 1, a kind of detect different stirring velocity under produce the experimental installation of methane quantity, comprise a horizontal table 1, described horizontal table 1 is placed with constant temperature blender with magnetic force 1, constant temperature blender with magnetic force 23, for collecting the collection container 1 of biogas and the collection container 27 for collecting biogas, described constant temperature blender with magnetic force 1 is provided with the fermentation raw material container 1 for storing fermentation raw material, described constant temperature blender with magnetic force 23 is provided with the fermentation raw material container 25 for storing fermentation raw material, described collection container 1 and collection container 27 are two identical containers, described fermentation raw material container 1 and fermentation raw material container 25 are two identical containers, described fermentation raw material container 1 top has opening one, described fermentation raw material container 25 top has opening two, described collection container 1 top has collects mouth one, described collection container 27 top has collects mouth two, the sealing member 1 that opening one can be closed is provided with in described fermentation raw material container 1, the sealing member 29 that opening two can be closed is provided with in described fermentation raw material container 25, the partition member 1 that the cavity volume sealed separation in collection container 1 can be become upper cavity volume and lower cavity volume is provided with in described collection container 1, the partition member 2 11 that the cavity volume sealed separation in collection container 27 can be become upper cavity volume and lower cavity volume is provided with in described collection container 1, described partition member 1 is identical with the elemental height of partition member 2 11, in the lower container of described collection container 1 and in the lower container of collection container 1, the water of equal amts is housed, collection tube 1 is provided with between described fermentation raw material container 1 and collection container 1, one end of described collection tube 1 by sealing member 1 through the cavity volume entering into fermentation raw material container 1, and collection tube 1 and fermentation raw material container 1 keep sealing, the other end of described collection tube 1 is connected with the lower cavity volume of collection container 1, and collection tube 1 and collection container 1 keep sealing, collection tube 2 17 is provided with between described fermentation raw material container 25 and collection container 27, one end of described collection tube 2 17 by sealing member 29 through the cavity volume entering into fermentation raw material container 25, and collection tube 2 17 and fermentation raw material container 25 keep sealing, the other end of described collection tube 2 17 is connected with the lower cavity volume of collection container 27, and collection tube 2 17 and collection container 27 keep sealing, be provided with laser ranger 1 in the upper cavity volume of described collection container 1, the Laser emission mouth of laser ranger 1 is vertically towards described partition member 1, laser ranger 2 13 is provided with in the upper cavity volume of described collection container 27, the Laser emission mouth of laser ranger 2 13 is vertically towards described partition member 1, and described laser ranger 1 is all identical with the distance between laser ranger 2 13 with horizontal table 1, described constant temperature blender with magnetic force 1 is connected with tachogenerator 1, described constant temperature blender with magnetic force 23 is connected with tachogenerator 2 15, described tachogenerator 1 by described sealing member 1 through entering in described fermentation raw material container 1, described tachogenerator 2 15 by described sealing member 29 through entering in described fermentation raw material container 25, magnetic valve 1 and magnetic valve 2 19 is respectively arranged with in described collection tube 1 and collection tube 2 17, described horizontal table 1 is also provided with PLC, and described magnetic valve 1 is all connected with described PLC with magnetic valve 2 19.
Constant temperature blender with magnetic force 1, constant temperature blender with magnetic force 23, laser ranger 1 and laser ranger 2 13 are all currently available productss that market can have been bought in the present embodiment.In the present embodiment, fermentation raw material is the mixture of stalk, pig manure and water.
Collection container 1 and collection container 27 all cylindrically, adopt glass material to make; Described laser ranger 1 is fixed with backstay 1, the length of described backstay 1 is greater than the diameter of described collection container 1, described laser ranger 1 is in the upper cavity volume of collection container 1, and the two ends of described backstay 1 act on the upper surface of collection container 1; Described laser ranger 2 13 is fixed with backstay 2 21, the length of described backstay 2 21 is greater than the diameter of described collection container 27, described laser ranger 2 13 is in the upper cavity volume of collection container 27, and the two ends of described backstay 2 21 act on the upper surface of collection container 27.
Described collection container 1 and the outer wall of collection container 27 are provided with scale marks.The distance that partition member 1 and partition member 2 11 rise conveniently is learnt by scale marks.
Be provided with a conduit 1 in described collection container 1, the upper end of described conduit 1 is in above the water surface, and the lower end of described conduit 1 seals with above-mentioned collection tube 1 and is communicated with; Be provided with a conduit 2 23 in described collection container 27, the upper end of described conduit 2 23 is in above the water surface, and the lower end of described conduit 2 23 seals with above-mentioned collection tube 2 17 and is communicated with.
Described sealing member 1, sealing member 29, partition member 1 and partition member 2 11 all adopt elastomeric material to make.
The principle of work of this experimental installation is such, commercially buy existing fermentation raw material, fermentation raw material is divided into identical two parts, is poured into respectively in fermentation raw material container 1 and fermentation raw material container 25, and with sealing member 1 and sealing member 29, opening one and opening two are closed; Identical two parts of water are poured in collection container 1 and collection container 27 respectively, and partition member 1 and partition member 2 11 are adjusted to identical height; Laser ranger 1 measures the initial distance value one of itself and partition member 1, such as 15cm, and laser ranger 2 13 measures the initial distance value two of itself and partition member 2 11, is similarly 15cm; Constant temperature blender with magnetic force 1 arranges stirring velocity value one, such as 30r/min, constant temperature blender with magnetic force 23 arranges stirring velocity value two, such as 32r/min; A time value is set in PLC, such as 5h, during this period of time, partition member 1 and partition member 2 11 are under the effect of biogas, move up, when the aerogenesis time reaches 5h, PLC Controlling solenoid valve 1 and magnetic valve 2 19 are closed simultaneously, collection container 1 and collection container 27 stop collecting biogas, and partition member 1 and partition member 2 11 also stop mobile; Laser ranger 1 measures the final distance value one of itself and partition member 1, such as 10cm, and laser ranger 2 13 measures the final distance value two of itself and partition member 2 11, is similarly 8cm; Draw like this, when stirring velocity 30r/min, the height of the biogas that collection container 1 is collected is 15cm-10cm=5cm, and when stirring velocity 32r/min, the height of the biogas that collection container 27 is collected is 15cm-8cm=7cm, because collection container 1 and collection container 27 are identical, the floorage of collection container 1 and collection container 27 is also identical, and the volume of biogas equals floorage and is multiplied by height; Therefore, the biogas volume that biogas volume that collection container 27 is collected is greater than collection container 1 and collects can be drawn; Prove thus: the volume that stirring velocity 32r/min situation bottom fermentation raw material produces biogas is greater than the volume that stirring velocity 30r/min situation bottom fermentation raw material produces biogas.Compare through repeatedly setting-up time value, can show fermentation raw material is under what stirring velocity, and its gas production rate is best.
Produce an experimental technique for methane quantity under detecting different stirring velocity, this experimental technique comprises:
A, preparation fermentation raw material: fermentation raw material market bought existing fermentation raw material or oneself allocate and make, as the fermentation raw material of experiment.
B, add fermentation raw material: be poured into respectively in fermentation raw material container 1 and fermentation raw material container 25 by identical two parts of fermentation raw materials, and opening one and opening two closed with sealing member 1 and sealing member 29.
C, add water: be poured into respectively in collection container 1 and collection container 27 by identical two parts of water, and partition member 1 and partition member 2 11 are adjusted to identical height.
D, stirring velocity is set: stirring velocity value one is set in constant temperature blender with magnetic force 1, such as 30r/min, constant temperature blender with magnetic force 23 is arranged and stirring velocity is worth not identical stirring velocity and is worth two, such as 32r/min.
E, setting-up time: in PLC, set a time value, when the aerogenesis time reaches the time value of this setting, such as 5h, PLC Controlling solenoid valve 1 and magnetic valve 2 19 are closed simultaneously, and collection container 1 and collection container 27 stop collecting biogas.
F, record experimental data: laser ranger 1 measures the distance value one between itself and partition member 1, records this distance value one, and laser ranger 2 13 measures the distance value two between itself and partition member 2 11, records this distance value two.
G, draw experimental data: compare distance value one and distance value two, numerical value is larger, and methane gas producing amount is less on the contrary.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ 1 herein, horizontal table; 2, constant temperature blender with magnetic force one; 3, constant temperature blender with magnetic force two; 4, fermentation raw material container one; 5, fermentation raw material container two; 6, collection container one; 7, collection container two; 8, sealing member one; 9, sealing member two; 10, partition member one; 11, partition member two; 12, laser ranger one; 13, laser ranger two; 14, tachogenerator one; 15, tachogenerator two; 16, collection tube one; 17, collection tube two; 18, magnetic valve one; 19, magnetic valve two; 20, backstay one; 21, backstay two; 22, conduit one; 23, the second-class term of conduit, but do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (5)
1. one kind detect different stirring velocity under produce the experimental installation of methane quantity, comprise a horizontal table, it is characterized in that, described horizontal table is placed with constant temperature blender with magnetic force one, constant temperature blender with magnetic force two, for collecting the collection container one of biogas and the collection container two for collecting biogas, described constant temperature blender with magnetic force one is provided with the fermentation raw material container one for storing fermentation raw material, described constant temperature blender with magnetic force two is provided with the fermentation raw material container two for storing fermentation raw material, described collection container one and collection container two are two identical containers, described fermentation raw material container one and fermentation raw material container two are two identical containers, described fermentation raw material container one top has opening one, described fermentation raw material container two top has opening two, described collection container one top has collects mouth one, described collection container two top has collects mouth two, the sealing member one that opening one can be closed is provided with in described fermentation raw material container one, the sealing member two that opening two can be closed is provided with in described fermentation raw material container two, the partition member one that the cavity volume sealed separation in collection container one can be become upper cavity volume and lower cavity volume is provided with in described collection container one, the partition member two that the cavity volume sealed separation in collection container two can be become upper cavity volume and lower cavity volume is provided with in described collection container one, described partition member one is identical with the elemental height of partition member two, in the lower container of described collection container one and in the lower container of collection container one, the water of equal amts is housed, collection tube one is provided with between described fermentation raw material container one and collection container one, one end of described collection tube one by sealing member one through the cavity volume entering into fermentation raw material container one, and collection tube one and fermentation raw material container one keep sealing, the other end of described collection tube one is connected with the lower cavity volume of collection container one, and collection tube one and collection container one keep sealing, collection tube two is provided with between described fermentation raw material container two and collection container two, one end of described collection tube two by sealing member two through the cavity volume entering into fermentation raw material container two, and collection tube two and fermentation raw material container two keep sealing, the other end of described collection tube two is connected with the lower cavity volume of collection container two, and collection tube two and collection container two keep sealing, be provided with laser ranger one in the upper cavity volume of described collection container one, the Laser emission mouth of laser ranger one is vertically towards described partition member one, be provided with laser ranger two in the upper cavity volume of described collection container two, the Laser emission mouth of laser ranger two is vertically towards described partition member one, and described laser ranger one is all identical with the distance between horizontal table with laser ranger two, described constant temperature blender with magnetic force one is connected with tachogenerator one, described constant temperature blender with magnetic force two is connected with tachogenerator two, described tachogenerator one by described sealing member one through entering in described fermentation raw material container one, described tachogenerator two by described sealing member two through entering in described fermentation raw material container two, magnetic valve one and magnetic valve two is respectively arranged with in described collection tube one and collection tube two, described horizontal table is also provided with PLC, described magnetic valve one is all connected with described PLC with magnetic valve two, described collection container one and collection container two are all cylindrically, described laser ranger one is fixed with backstay one, the length of described backstay one is greater than the diameter of described collection container one, described laser ranger one is in the upper cavity volume of collection container one, the two ends of described backstay one act on the upper surface of collection container one, described laser ranger two is fixed with backstay two, the length of described backstay two is greater than the diameter of described collection container two, described laser ranger two is in the upper cavity volume of collection container two, and the two ends of described backstay two act on the upper surface of collection container two.
2. produce the experimental installation of methane quantity under the different stirring velocity of detection according to claim 1, it is characterized in that, described collection container one and the outer wall of collection container two are provided with scale marks.
3. under the different stirring velocity of detection according to claim 1, produce the experimental installation of methane quantity, it is characterized in that, a conduit one is provided with in described collection container one, the upper end of described conduit one is in above the water surface, and the lower end of described conduit one seals with above-mentioned collection tube one and is communicated with; Be provided with a conduit two in described collection container two, the upper end of described conduit two is in above the water surface, and the lower end of described conduit two seals with above-mentioned collection tube two and is communicated with.
4. produce the experimental installation of methane quantity under the different stirring velocity of detection according to claim 1, it is characterized in that, described described sealing member one, sealing member two, partition member one and partition member two all adopt elastomeric material to make.
5. produce an experimental technique for methane quantity under detecting different stirring velocity, adopt the experimental installation producing methane quantity in claim 1-4 under the different stirring velocity of arbitrary described detection, this experimental technique comprises:
A, preparation fermentation raw material: fermentation raw material market bought existing fermentation raw material or oneself allocate and make, as the fermentation raw material of experiment;
B, add fermentation raw material: be poured into respectively in fermentation raw material container one and fermentation raw material container two by identical two parts of fermentation raw materials, and opening one and opening two closed with sealing member one and sealing member two;
C, add water: be poured into respectively in collection container one and collection container two by identical two parts of water, and partition member one and partition member two are adjusted to identical height;
D, stirring velocity is set: stirring velocity value one is set in constant temperature blender with magnetic force one, constant temperature blender with magnetic force two is arranged and stirring velocity is worth not identical stirring velocity and is worth two;
E, setting-up time: in PLC, set a time value, when the aerogenesis time reaches the time value of this setting, PLC Controlling solenoid valve one and magnetic valve two are closed simultaneously, and collection container one and collection container two stop collecting biogas;
F, record experimental data: laser ranger one measures the distance value one between itself and partition member one, records this distance value one, and laser ranger two measures the distance value two between itself and partition member two, records this distance value two;
G, draw experimental data: compare distance value one and distance value two, numerical value is larger, and methane gas producing amount is less on the contrary.
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