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Long-time continuous monitoring-oriented flue oil fume VOCs gas concentration monitoring method and equipment

A technology of gas concentration and monitoring equipment, which is applied to the analysis of gas mixtures, measuring devices, instruments, etc., can solve the problems of difficulty in ensuring monitoring reliability, increasing material costs and labor costs, and achieve low-cost long-term continuous monitoring solutions, saving Material cost and labor cost, effect of maintaining sensitive characteristics

Pending Publication Date: 2021-08-13
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

This approach is not only difficult to ensure the reliability of monitoring, but also greatly increases the cost of materials and labor

Method used

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  • Long-time continuous monitoring-oriented flue oil fume VOCs gas concentration monitoring method and equipment
  • Long-time continuous monitoring-oriented flue oil fume VOCs gas concentration monitoring method and equipment
  • Long-time continuous monitoring-oriented flue oil fume VOCs gas concentration monitoring method and equipment

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Embodiment Construction

[0042] Embodiments of the present invention are described in detail below, and the embodiments are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0043] The long-term continuous monitoring-oriented oil fume VOCs gas concentration monitoring method of the present invention includes an oil fume sampling method using a side branch structure and an automatic identification algorithm for cloud failure sensors.

[0044] Among them, taking the oil fume flow rate of 4-6 m / s and the flue cross section of 400mm×600mm as an example, the schematic diagram of the oil fume sampling method using the side branch structure can be found in figure 1 ,Specifically:

[0045] Using the diameter of the oil fume pipe, the shape of the pipe, and the flow rate of the oil fume, and aiming at the flow rate of the oil fume reaching the center of the flue opening at 2.3-2.5 m / s, the size of the flue opening is calculated by the flui...

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Abstract

The invention relates to a long-time continuous monitoring-oriented flue oil fume VOCs gas concentration monitoring method and equipment, an oil fume sampling method of a bypass structure and a cloud failure sensor automatic identification algorithm are designed based on flue oil fume characteristics, the service life of a gas sensor for oil fume VOCs monitoring is prolonged, and monitoring personnel can be prompted to replace the failed sensor in time. On the basis, the oil fume VOCs gas concentration monitoring equipment is provided. a sampling device is used for sampling oil fume in a smoke exhaust pipeline; a gas sensor array is used for measuring various indexes of oil fume VOCs gas; a calculation device is used for collecting and correcting the measured value of the gas sensor array in the process of measuring the oil fume concentration; and a communication device is used for uploading the data to a monitoring center and receiving an instruction sent by the monitoring center. The equipment is flexible to install and convenient to maintain, a new way for continuously monitoring the concentration of the VOCs in the oil fume for a long time is provided, and meanwhile high precision, low cost and high safety of monitoring of the gas concentration of the VOCs in the oil fume are guaranteed.

Description

technical field [0001] The invention relates to the technical field of oil fume monitoring, in particular to a method and equipment for monitoring the concentration of oil fume VOCs gas for long-term continuous monitoring. Background technique [0002] With the continuous improvement of the living standards of urban residents in our country, the contradiction between the fume emission brought about by the vigorous development of the catering industry and the atmospheric environment and the living environment of residents has become increasingly acute. The fume emission of catering enterprises has become one of the sources of air pollution that cannot be ignored. The fumes generated during food cooking contain particulate matter, volatile organic compounds, carbon oxides and other harmful pollutants, posing potential hazards to the health of surrounding residents. [0003] According to the spirit of relevant laws and regulations, the state has formulated the "Catering Fume Em...

Claims

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Application Information

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IPC IPC(8): G01N33/00
CPCG01N33/0004Y02A50/20
Inventor 王众丞杨建华侯宏
Owner NORTHWESTERN POLYTECHNICAL UNIV
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