Biomass natural gas potential measurement system

Abstract

The invention relates to the technical field of biogas and biological natural gas, in particular to a biomass natural gas potential measurement system, which systematically studies the influence of each factor on the gas production effect in the anaerobic fermentation process in detail, optimizes the flow and process selection, and can measure the potential of the biomass natural gas under the laboratory condition. The gas production potential of samples can be tested quickly and automatically in batches, unattended operation can be realized, and the workload of personnel is reduced. The influence of each factor on the gas production effect in the anaerobic fermentation process of the anaerobic fermentation reactor can be systematically researched in detail in a laboratory, so that the construction of anaerobic fermentation biogas or biogas engineering is optimized, and the efficiency of the fermentation process is improved.

Description

Technical Field

[0001] This invention relates to the field of biogas and biomethane technology, and more particularly to a biomass natural gas potential measurement system. Background Technology

[0002] Since both biomass natural gas and biogas are mixed gases produced by microbial fermentation of organic matter under anaerobic conditions, and their main component is methane, the gas production capacity measurement devices for both are the same.

[0003] Currently, when conducting biogas fermentation experiments in the laboratory, the dehydration, decarbonization (optional), and drainage gas collection method is generally adopted. That is, the biogas produced from the fermentation bottle enters the dehydration unit, the decarbonization unit, and the gas collection bottle. The water in the gas collection bottle is drained into the water collection bottle. The amount of biogas produced is known by reading the volume of water in the water collection bottle. The method is simple and easy to operate, but it has the following problems: (1) The subsequent drainage gas collection after dehydration weakens the dehydration effect. (2) The volume of the gas collection bottle is limited. When all the water in the gas collection bottle is drained into the water collection bottle, it means that the gas collection bottle is completely filled with biogas. At this time, it is necessary to manually open the gas release valve on the gas collection bottle to release the biogas in the gas collection bottle. Otherwise, the biogas produced later cannot be read, resulting in inaccurate experimental data. This forces the experimenters to stay up all night to observe whether gas needs to be released, which consumes a lot of manpower and energy, resulting in low experimental efficiency and difficulty in effectively recording the entire experimental process data. (3) The desulfurization and decarbonization materials in the purification unit, whether solid or liquid, are prone to clogging the gas path. Summary of the Invention

[0004] The purpose of this invention is to provide a biomass natural gas potential measurement system to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention provides a biomass natural gas potential measurement system, comprising: a reactor, a stirring device, a temperature control device, an intelligent control and display unit, a biogas purification and upgrading device, and a gas collection device;

[0006] The reactor is located inside the temperature control device; the stirring device is located inside the reactor to mix the fermentation material in the reactor; the biogas purification and upgrading device is connected to the reactor and the gas collection device respectively to purify the generated biogas; and the intelligent control and display unit is connected to the reactor, the stirring device, the temperature control device, the biogas purification and upgrading device, and the gas collection device respectively.

[0007] The technical effects and advantages of this invention are as follows:

[0008] This invention provides a detailed and systematic study of the impact of various factors on gas production during anaerobic fermentation, optimizing processes and techniques. Under laboratory conditions, it enables rapid, automated, and batch testing of the gas production potential of samples, allowing for unattended operation and reducing personnel workload. It allows for a detailed and systematic study of the influence of various factors on gas production during anaerobic fermentation in an anaerobic reactor, thereby optimizing the construction of anaerobic fermentation biogas / biomethane projects and improving fermentation process efficiency.

[0009] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0010] Figure 1 Diagram of the biomass natural gas potential measurement system;

[0011] The components include: reactor 1, temperature control device 2, gas replacement port 3, stirring device 4, sampling port 5, sampling valve 6 or 9, biogas purification and upgrading device 8, gas circuit check valve 7 or 10, gas flow meter 11, gas collection bag 12, intelligent control and display unit 13, and funnel-shaped air inlet 14. Detailed Implementation

[0012] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0013] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0014] To address the shortcomings of existing technologies, this invention discloses a biomass natural gas potential measurement system, such as... Figure 1 As shown. The system includes: reactor 1, temperature control device 2, gas replacement port 3, stirring device 4, sampling port 5, sampling valve 6 or 9, biogas purification and upgrading device 8, gas circuit check valve 7 or 10, gas flow meter 11, gas collection bag 12, intelligent control and display unit 13, and funnel-shaped air inlet 14.

[0015] Biomass natural gas includes biogas and biomethane.

[0016] The reactor 1 is set inside the temperature control device 2. The reactor 1 is preferably a glass bottle. The top cover is equipped with an insertion port of the stirring device 4, a sampling port 5, and a gas replacement port 3. The gas replacement port 3 is used for gas replacement in the early stage of anaerobic digestion. When the reaction effect is not good, some regulators can be added through the gas replacement port 3. Of course, gas can also be sampled in the later stage.

[0017] Among them, the temperature control device 2 is preferably a constant temperature water bath, which is used to control the temperature of the fermentation material in the reactor.

[0018] The stirring device 4 is installed inside the reactor 1 to mix the fermentation material in the reactor and promote the reaction process.

[0019] The biogas purification and upgrading device 8 is connected to both the reactor 1 and the gas collection device, and is used to purify the generated biogas. The biogas purification and upgrading device 8 includes a desulfurization and decarbonization unit to purify the generated biogas.

[0020] It should also be noted that gas sampling valves 6 or 9 can be added before and after the biogas purification and upgrading device 8 to collect biogas or biomethane samples before and after purification.

[0021] It should also be noted that reactor 1 delivers biogas to the biogas purification and upgrading device through funnel-shaped air inlet 14, which reduces the possibility of gas path blockage during long-term experiments.

[0022] The gas collection device includes a gas flow meter 11 and a gas collection bag 12, used to measure and collect the generated biogas. The gas flow meter 11 is preferably a volumetric gas flow meter.

[0023] The intelligent control and display unit 13 is connected to the reactor 1, stirring device 4, temperature control device 2, biogas purification and upgrading device 8, and gas collection device, respectively, for real-time monitoring and adjustment of parameters such as reactor temperature and stirring speed, thereby improving the accuracy and stability of the experiment. It also integrates a data acquisition system and remote monitoring capabilities, enabling unattended operation of the experiment, thus reducing waste of human resources and improving work efficiency.

[0024] To better understand this scheme, the following is a brief introduction to the usage of the biomass natural gas potential measurement system:

[0025] 1. Before starting, introduce a fixed amount of air through the gas replacement port 3 and observe the reading of the gas flow meter 11 to check the sealing performance of the gas path.

[0026] 2. After weighing the sample according to the ratio, add it to reactor 1. Set the temperature of the constant temperature water bath 2 to 37℃. Use nitrogen / argon to purge the gas path through the gas replacement port 3 for 30-60 seconds. Turn on the stirring device 4 and stir at a fixed time and speed. Input the stirring, temperature and other control parameters through the intelligent control display unit 13 to start the test.

[0027] 3. During the reaction process, the reaction liquid can be sampled through sampling port 5, the gas before purification can be sampled through sampling valve 6, and the gas after purification can be sampled through sampling valve 9. Two check valves 7 or 10 prevent backflow of gas, and the funnel-shaped air inlet 14 prevents the generated carbonate / bicarbonate from clogging the gas path. The gas passes through the biogas purification and upgrading device 8 (high-concentration alkaline solution containing a colorimetric agent to ensure purification effect) to remove components such as hydrogen sulfide, ammonia, carbon dioxide, and moisture from the biogas. The methane production is measured by the volumetric flow meter 11, and the tail gas is collected by the gas collection bag 12. The gas composition throughout the entire gas production cycle can be detected. The entire system uses an intelligent control display unit 13 to monitor and automatically control parameters such as reactor temperature and stirring speed in real time, improving the accuracy and stability of the experiment and reducing the workload of personnel.

[0028] 4. After the reaction is complete, the data can be viewed or exported on the intelligent control display unit 13.

[0029] Because gas metering needs to consider the conversion to standard conditions (20℃, 101.325kPa), and needs to consider gas moisture, atmospheric pressure, and temperature, compared with the existing technology of drainage gas collection, the water seal volumetric flow meter, through the liquid seal volumetric flow meter 11, can reduce the impact of moisture on gas generation metering. The intelligent control display unit 13 has built-in temperature and pressure sensors and built-in formulas, which can directly output the gas after conversion.

[0030] Meanwhile, the volumetric flow meter 11 enables continuous, unmanned, and full-cycle measurement of gas production, while the gas collection bag 12 collects all exhaust gas, ensuring safety and environmental friendliness. Furthermore, it allows for the measurement of gas composition throughout the entire production cycle. More importantly, the funnel-shaped inlet 14 design reduces the risk of gas path blockage during long-cycle experiments.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A biomass natural gas potential measurement system, characterized in that, include: Reactor (1), temperature control device (2), stirring device (4), biogas purification and upgrading device (8), intelligent control and display unit (13), gas collection device; The reactor (1) is located inside the temperature control device (2); the stirring device (4) is located inside the reactor (1); the biogas purification device (8) is connected to the reactor (1) and the gas collection device respectively; and the intelligent control display unit (13) is connected to the reactor (1), the stirring device (4), the temperature control device (2), the biogas purification device (8), and the gas collection device respectively.

2. The biomass natural gas potential measurement system according to claim 1, characterized in that, The reactor (1) is a glass bottle.

3. The biomass natural gas potential measurement system according to claim 1, characterized in that, The reactor (1) is provided with a gas replacement port (3) on its top cover.

4. The biomass natural gas potential measurement system according to claim 1, characterized in that, The temperature control device (2) includes: a constant temperature water bath and an oil bath.

5. The biomass natural gas potential measurement system according to claim 1, characterized in that, The biogas purification and upgrading device (8) is a desulfurization and decarbonization unit.

6. The biomass natural gas potential measurement system according to claim 1, characterized in that, The gas collection device includes a gas flow meter (11) and a gas collection bag (12) that are connected to each other.

7. The biomass natural gas potential measurement system according to claim 6, characterized in that, Gas flow meters (11) include: volumetric gas flow meters and differential pressure flow meters.

8. The biomass natural gas potential measurement system according to claim 1, characterized in that, The top cover of the reactor (1) is provided with a sampling port (5).

9. The biomass natural gas potential measurement system according to claim 1, characterized in that, The reactor (1) delivers biogas to the biogas purification and upgrading device (8) through the funnel-shaped air inlet (14).

10. The biomass natural gas potential measurement system according to claim 1, characterized in that, Gas sampling valves (6) and (9) are installed before and after the biogas purification and upgrading device (8).

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