Device for detecting degradation performance of biodegradable material in high-solid anaerobic environment

Abstract

The utility model provides a device for detecting the degradation performance of a biodegradable material in a high-solid anaerobic environment, which is characterized in that constant-temperature equipment comprises a plurality of reaction flasks, and gas outlets of the reaction flasks are mutually connected with a gas inlet of a water-gas separator through gas pipes; a gas outlet of the water-gas separator is connected with a gas inlet of the electromagnetic valve through a gas pipe A gas outlet of the electromagnetic valve is connected with a gas inlet of the gas collector; a gas outlet of the gas collector is connected with a gas inlet of the electromagnetic valve; a gas outlet of the electromagnetic valve is connected with the gas detection module; opening and closing of the electromagnetic valve and operation of the gas detection module are controlled through the PLC module; the device is reasonable in design and simple and reliable in structure. The device can be used for solving the problems that the gas generation amount is difficult to measure in the degradation performance measurement of the biodegradable material in a high-solid anaerobic environment, and the conventional self-made detection device is complicated to operate, poor in reliability, high in labor intensity and the like.

Description

Technical Field

[0001] The utility model relates to the field of biodegradable material degradation performance detection, in particular to a device for detecting the degradation performance of biodegradable materials in a high-solid anaerobic environment. Background Art

[0002] Anaerobic biodegradable plastic is a type of degradable plastic. Compared with industrial composting plastics and household composting plastics, it is a less popular type. However, due to geographical influences, compared with composting treatment, anaerobic digestion technology is widely used in urban kitchen waste treatment. Therefore, compared with industrial composting plastics, the post-treatment of anaerobic biodegradable plastics has certain advantages. Some existing equipment for the degradation detection of anaerobic biodegradable plastics mainly directly measures the total volume of gas produced, and uses this to represent the total amount of methane and carbon dioxide generated by anaerobic degradation of plastics. However, this will be affected by the water vapor and other sulfur and nitrogen compounds that may be produced at the same time, thereby reducing the accuracy of the test. In addition, there are some special methods that require manual timed air extraction and then measure carbon dioxide and methane through instruments, which also have the problems of complicated operation and high labor intensity.

[0003] In order to solve the difficulty in detecting the degradation performance of biodegradable materials in the existing high-solid anaerobic environment, the utility model provides a device for detecting the degradation performance of biodegradable materials in the high-solid anaerobic environment. Summary of the invention

[0004] The purpose of the utility model is to provide a device for detecting the degradation performance of biodegradable materials in a high-solid anaerobic environment, so as to solve the problems of difficulty in measuring the amount of gas generated in the prior art, as well as the problems of complex operation, poor reliability and high labor intensity of the previous detection devices.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A device for detecting the degradation performance of biodegradable materials in a high-solid anaerobic environment, comprising: a constant temperature device (1), a reaction bottle (2), a water-gas separator (3), a gas collector (5), and a PLC control module (7), characterized in that: a reaction bottle (2) is placed in the constant temperature device (1), the gas outlet of the reaction bottle (2) is connected to the gas inlet of the water-gas separator (3) through a gas pipe, the gas outlet of the water-gas separator (3) is connected to the gas inlet of a first solenoid valve (4) through a gas pipe, the gas outlet of the first solenoid valve (4) is connected to the gas inlet of a gas collector (5) through a gas pipe, and the gas outlet of the gas collector (5) is connected to a gas detection module (6) through a second solenoid valve (9) via a pipeline. The constant temperature device (1) is a water bath or a constant temperature box, the temperature accuracy meets 52±2°C, and contains at least 9 workstations, where the reaction bottle (2) can be placed. The volume of the reaction bottle (2) is not less than 750mL. The water-gas separator (3) is a membrane air filter. The gas collector (5) is a gas collection bag with a volume of not less than 200 mL. The gas detection module (6) includes at least an online detection module or device for the concentration of two gases, carbon dioxide and methane, and is provided with an air pump (8). The advantages of the utility model are: reasonable design, simple and reliable structure. The device can solve the difficulty in measuring the amount of gas generated in the determination of the degradation performance of biodegradable materials in a high-solid anaerobic environment, as well as the problems of complex operation, poor reliability, and high labor intensity of previous detection devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0008] In the figure: 1-constant temperature equipment, 2-reaction bottle, 3-water-gas separator, 4-first solenoid valve, 5-gas collector, 6-gas detection module, 7-PLC control module, 8-vacuum pump, 9-second solenoid valve. DETAILED DESCRIPTION

[0009] The following specific examples further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0010] The figure shows a device for detecting the degradation performance of biodegradable materials in a high-solid anaerobic environment, comprising: a constant temperature device 1, a reaction bottle 2, a water-gas separator 3, a gas collector 5, and a PLC control module 7, characterized in that: a reaction bottle 2 is placed in the constant temperature device 1, the gas outlet of the reaction bottle 2 is connected to the gas inlet of the water-gas separator 3 through a trachea, the gas outlet of the water-gas separator 3 is connected to the gas inlet of the first solenoid valve 4 through a trachea, the gas outlet of the first solenoid valve 4 is connected to the gas inlet of the gas collector 5 through a trachea, and the gas outlet of the gas collector 5 is connected to the gas detection module 6 through a pipeline through a second solenoid valve 9. The constant temperature device 1 is a water bath or a constant temperature box, the temperature accuracy meets 52±2°C, and contains at least 9 stations, where the reaction bottle 2 can be placed. The volume of the reaction bottle 2 is not less than 750mL. The water-gas separator 3 is a membrane air filter. The gas collector 5 is a gas collection bag, the volume of which is not less than 200mL. The gas detection module 6 at least includes an online detection module or device for the concentration of carbon dioxide and methane, and is provided with an air pump 8. The air pump can accurately extract the gas in the gas collection bag, thereby measuring the gas volume therein. The online detection module or device for the concentration of carbon dioxide and methane can accurately analyze the concentration of the two biogases.

[0011] Example 1

[0012] See attached Figure 1 The constant temperature device 1 is a constant temperature box, which can accommodate 36 reaction bottles 2 and the control temperature is 52°C; the volume of the reaction bottle 2 is 1L, and the gas outlet is interconnected with the gas inlet of the water-gas separator 3 through the gas pipe; the gas outlet of the water-gas separator 3 is interconnected with the gas inlet of only the first solenoid valve 4 through the gas pipe, and the solenoid valve is in an open state when not measuring and closed when measuring; the gas outlet of the first solenoid valve 4 is interconnected with the gas inlet of the gas collector 5 through the gas pipe, and the gas collector is a gas collection bag; the gas outlet of the gas collector 5 is interconnected with the second solenoid valve 9 through the gas pipe; the second solenoid valve 9 has an outlet, and the outlet is interconnected with the gas inlet of the gas detection module 6 through the gas pipe, and the solenoid valve is closed when not measuring and opened when measuring; the PLC control module 7 can set the time to control the opening and closing of the two solenoid valves 4 and 9, as well as the operation of the gas detection module 6, including the operation of the vacuum pump 8 therein. The PLC control module can be used to automatically and intermittently extract the gas in the gas collector 5 and measure it, and then the precise total amount of biogas can be obtained through conversion.

Claims

1. A device for detecting the degradation performance of biodegradable materials in a high-solid anaerobic environment, comprising: A constant temperature device (1), a reaction bottle (2), a water-gas separator (3), a gas collector (5), and a PLC control module (7), characterized in that: a reaction bottle (2) is placed in the constant temperature device (1), the gas outlet of the reaction bottle (2) is connected to the gas inlet of the water-gas separator (3) through an air pipe, the gas outlet of the water-gas separator (3) is connected to the gas inlet of a first solenoid valve (4) through an air pipe, the gas outlet of the first solenoid valve (4) is connected to the gas inlet of the gas collector (5) through an air pipe, and the gas outlet of the gas collector (5) is connected to the gas detection module (6) through a pipeline via a second solenoid valve.

2. The device for detecting the degradation performance of biodegradable materials in a high-solid anaerobic environment according to claim 1, characterized in that: The constant temperature device (1) is a water bath or a constant temperature box, the temperature accuracy meets 52±2°C, and contains at least 9 workstations for placing the reaction bottle (2).

3. The device for detecting the degradation performance of biodegradable materials in a high-solid anaerobic environment according to claim 1, characterized in that: The volume of the reaction bottle (2) is not less than 750 mL.

4. The device for detecting the degradation performance of biodegradable materials in a high-solid anaerobic environment according to claim 1, characterized in that: The water-gas separator (3) is a membrane air filter.

5. The device for detecting the degradation performance of biodegradable materials in a high-solid anaerobic environment according to claim 1, characterized in that: The gas collector (5) is a gas collection bag with a volume of not less than 200 mL.

6. The device for detecting the degradation performance of biodegradable materials in a high-solid anaerobic environment according to claim 1, characterized in that: The gas detection module (6) comprises at least an online detection module or device for the concentrations of two gases, carbon dioxide and methane, and is provided with an air extraction pump (8).

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