Large-size low-temperature destructive distillation system for low-order lignite
A technology for dry distillation and lignite, applied in the field of dry distillation, can solve the problems of waste of resources, reduce heat utilization efficiency, uneven quality of semi-coke, etc., and achieve the effect of eliminating the hidden danger of clogging, improving energy utilization rate, and avoiding secondary pyrolysis.
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[0019] The low-rank lignite large-scale low-temperature dry distillation system of the present invention is composed of a coal preparation part, a drying part, a dry distillation part, a heat source part, a semi-coke cooling and conveying part, and a gas tar treatment part, combined with the following figure 1 The present invention will be further explained.
[0020] Coal preparation part: the raw coal has a particle size of 30mm-50mm after being crushed, and is sent to the coal bunker 19 at the top of the drying tower, and sent to the tubular drying tower 17 by the raw coal screw feeder 20.
[0021] Drying part: The drying part includes a second tube group filter box 16, a tube drying tower 17, a coal storage bin 18, a second cyclone separator 21, and a second gravity dust collector 22. The filter box of the second tube group is located on the upper part of the tubular drying tower and connected to it, and the tubular drying tower is located on the upper part of the coal storage t...
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