Carbonaceous material pyrolysis system and pyrolysis process thereof
A technology of pyrolysis and coal, applied in the field of coal pyrolysis system and its technology, can solve the problems of pyrolysis gas back-mixing, pressure fluctuation, etc.
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Embodiment 1
[0056] use image 3 The pyrolysis system and process of the present invention shown pyrolyze lignite coal whose coal quality analysis data are shown in Table 1 below.
[0057] Table 1
[0058]
[0059] The process scale of this example is 1 million tons / year (3500 tons / day), and the feed rate of raw coal S1 is 145 tons / hour.
[0060] 1) After the raw coal S1 is crushed to ≤50mm, it enters the drying device 1 and is heated to about 200°C to remove most of the moisture. The moisture content of the dried coal is about 5%;
[0061] 2) The dry tail gas S5 from the drying device 1 has a temperature of about 110°C. After being dedusted by the gas-solid separator 11, about 70% is used as the circulating tail gas S8, and the remaining part S13 is discharged into the atmosphere after desulfurization and other treatments; the circulating tail gas S8 is mixed with the waste heat gas S17 from the solid medium heater 6 to about 300°C, and enters the drying device 1 as the drying medium...
Embodiment 2
[0070] use image 3 The pyrolysis system and process of the present invention shown pyrolyzes long flame coal whose coal quality analysis data are shown in Table 2 below.
[0071] Table 2
[0072]
[0073]
[0074] The process scale of this example is 1 million tons / year (3500 tons / day), and the feed rate of raw coal S1 is 145 tons / hour.
[0075] 1) After the raw coal S1 is crushed to ≤50mm, it enters the drying device 1 and is heated to about 180°C to remove most of the moisture. The moisture content of the dried coal is about 1%;
[0076] 2) The dry tail gas S5 from the drying device 1 has a temperature of about 110°C. After being dedusted by the gas-solid separator 11, about 50% is used as the circulating tail gas S8, and the remaining part S13 is discharged into the atmosphere after desulfurization and other treatments; the circulating tail gas S8 is mixed with the waste heat gas S17 from the burner 6 to about 300°C, and enters the drying device 1 as the drying med...
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Abstract
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