Multi-channel gas mixed flow device
A multi-channel, gas technology, applied in the preparation of test samples, etc., can solve the problems of uneven flow rate distribution, increased monitoring costs, and difficulty in single-point sampling, achieving good mixing effect and flexible use.
Active Publication Date: 2015-06-24
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
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Problems solved by technology
However, the CEMS of most power plants is limited by conditions during the actual installation process, and it is difficult to meet the above requirements. In the case of unstable flow field at the monitoring section, inertial motion leads to uneven distribution of particles, gaseous pollutants, and flow velocity. Therefore, single-point sampling It is difficult to meet the requirement that the measured pollutant concentration represents the real pollutant content of the flue section. Multi-point sampling at the same monitoring section is an effective method to obtain accurate pollutant content, but on the one hand, it will undoubtedly increase the monitoring cost, and each point needs to be independently Install sampling and analysis equipment, which makes the monitoring system complicated, and the integration of different analysis systems will bring greater system errors
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[0023] Such as figure 1 and figure 2 As shown, the multi-channel gas mixing device of the present invention includes a mounting plate 11, 5 intake branches, 5 filter devices 12, and a two-stage gas mixing device. The filter device and the two-stage gas mixing device are arranged On the mounting plate 11, each intake branch is connected to the filter device 12, the gas path control device, and finally to the two-stage air mixing device.
[0024] The flue gas contains a certain amount of dust, particulate matter and other impurities. The filter device 12 removes the dust, particulate matter and other impurities in the gas, and then the gas path control device controls the input and shutdown of the gas, and controls each branch at the same time. The volume of gas input by the circuit is the same, and finally the gas from different branches is fully mixed by the two-stage gas mixing device.
[0025] When mixing the flue gas with a particularly high dust content in the flue gas to be m...
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The invention discloses a multi-channel gas mixed flow device, which comprises an installation plate, a plurality of gas inlet branches, a plurality of filtering devices and a two-stage gas mixing device, wherein a plurality of filtering devices and the two-stage gas mixing device are arranged on the installation plate; and each gas inlet branch is sequentially connected with at least one filtering device, a gas circuit control device and the two-stage gas mixing device. Fume gas contains a certain quantity of impurities such as dust and particles, the impurities such as the dust and the particles in gas are removed by the filtering devices, the gas circuit control device controls the input and non-input of the gas and determines the size consistency of the gas which is input by each branch, and the gas of different branches is fully mixed by the two-stage gas mixing device. The multi-channel gas mixed flow device is simple and compact in structure, portable, and good in effect of uniformly and quickly mixing multi-component gas in short time, can be conveniently and flexibly used in the site, and can individually control each gas inlet branch through the gas circuit control device.
Description
Technical field [0001] The invention relates to the technical field of gas mixing, in particular to a multi-channel gas mixing device. Background technique [0002] 70% of my country's energy comes from burning coal, and particulate matter, sulfur dioxide, and nitrogen oxides released by burning coal are the main pollutants that cause air pollution. Continuous Emission Monitoring System (CEMS, Continuous Emission Monitoring System) is an online monitoring system specially designed for continuous monitoring of gaseous pollutants. Most domestic power plants above 300MW are installed with CEMS to monitor gaseous pollutants, particulate matter and related exhaust parameters. , Provide basic data for environmental protection departments to timely understand and master the discharge of key pollution sources and the emission reduction of major pollutants. [0003] According to the "Technical Specification for Continuous Monitoring of Gas Emissions from Stationary Pollution Sources" (HJ / T...
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IPC IPC(8): G01N1/38
Inventor 沈跃良刘德允温智勇孙超凡李浙英刘亚明董拯
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID