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Why we must solve the problem of exhaust emission from slime dryer

  The principle of the slime dryer is to use the principle of drying gas heat exchange to take the moisture in the slime out of the drying equipment to complete the drying process. However, there are some impurities in the coal slime. These impurities will react chemically at high temperatures. The gas outside the cylinder is also called waste gas. If these waste gases are not properly treated, it will not only damage the equipment but also damage the equipment. The environment can also cause serious pollution.

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  Generally, when the exhaust gas of the slime dryer is below the dew point temperature, the difficulty of processing and discharging will increase a lot, because we should try to control the exhaust gas temperature to be higher than the dew point temperature. If the sulfur content in the coal is high, the dew point temperature will also increase accordingly. Mixing with water vapor creates an acidic liquid that corrodes equipment. Specifically, this temperature difference is about 20-50 degrees higher than the dew point temperature. If the outdoor temperature in the north is low in winter, it needs to be at least 70-80 degrees higher to ensure the effective discharge of high-temperature and high-humidity exhaust gas.

  Moreover, a higher configuration should be used for the dust removal system, because the dust content of the dried coal slime itself is relatively high, and if coupled with the higher requirements for output and lower moisture after drying, it is even more difficult to handle.

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