| 摘要 |
A flue gas system and a sampling unit thereof are provided to reduce flue gas sampling cost as filter replacement is not necessary and to obtain successive and uniform flue gas sampling. A flue gas system comprises a coal supply device(10), a boiler(15), a first heat exchanger(17), a second heat exchanger(18), and a flue gas sampling unit(3). The coal supply device supplies coal. The boiler is connected to the coal supply device. The boiler produces flue gas by burning the coal supplied by the coal supply device. The first heat exchanger is connected to the boiler. The second heat exchanger is connected to the first heat exchanger. The flue gas sampling unit is arranged between the first heat exchanger and the second heat exchanger. The flue gas sampling unit samples the flue gas.
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