Sampling system and method for fixed gas emission source, and application thereof

Abstract

The invention provides a sampling system and method for a fixed gas emission source. The sampling system comprises a sampling device, a flow sensing device, an information calculation device, a flow control processing device and a flow integrating device, wherein the sampling device is configured to receive a gas from a fixed gas emission source; the flow sensing device is configured to monitor, read and store the wind speed value of the gas; the information calculation device is configured to obtain information processing data according to the wind speed value; the flow control processing device is configured to convert the information processing data into an electromagnetic signal and transmit the electromagnetic signal to the flow integrating device; and the flow integrating device is configured to obtain sampling data according to the electromagnetic signal. According to the sampling system and method for the fixed gas emission source, the total emission amount of gas can be accurately estimated, digital monitoring of the sampling process is achieved, and information records are obtained.

Description

technical field [0001] The invention relates to the field of gas sampling, in particular to a sampling system, a sampling method and an application of a gas fixed emission source. Background technique [0002] Urban air pollutants have attracted the attention of relevant environmental protection research teams, technical teams and the general public worldwide. After the development of related topics in recent years, research teams at home and abroad have formulated relevant research methods for various pollution sources and introduced relevant experimental equipment. [0003] As we all know, the sampling system and method of gas fixed emission sources are an indispensable basic work for the study of exhaust gas, which has an important impact on the accuracy of the final research results. For stationary gas emission sources, domestic scientific research institutions usually adopt the relevant systems and methods issued by the US Environmental Protection Agency. However, due...

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Problems solved by technology

The disadvantage of this technique is that if the volume flow and concentration of the pollutant source gas fluctuate during the sampling period, while the sampling pump still provides a constant flow rate, it will have a huge impact on the estimation of the total gas emission, which will cause waste gas for the enterprise. The investment in governance brings greater risks, and it also makes it more difficult for the environmental protection department to make pollution control decisions

[0005] In addition, there are some sampling systems for fixed gas emission sources, where the syringe device is inserted into the fixed emission source to directly extract gas as an experimental research sample. The disadvantages of this system are: 1. The total amount of gas emissions cannot be accurately estimated; 2. It cannot be realized Digital monitoring and information recording for the sampling process

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