The invention relates to a vertical furnace
carbonization chamber with internal gas collection cavities. The vertical furnace
carbonization chamber comprises a
carbonization chamber, wherein gas collection cavities are arranged at the two ends and / or in the middle of the carbonization chamber along the height direction of the carbonization chamber;
coal gas export holes are formed between the carbonization chamber and the gas collection cavities; a convergence gas channel is arranged at the top of the carbonization chamber, is communicated with each gas collection cavity and leads to an ascending
pipe; the gas collection cavities, the
coal gas export holes and the convergence gas channel can be formed by
refractory bricks and can be also formed by
welding heat-resisting
steel plates. Compared with the prior art, the vertical furnace carbonization chamber has the beneficial effects that 1) the vertical furnace carbonization chamber can be widely used for preparing
tar,
coal gases and semi-
coke through
dry distillation of various low-rank coal, is not limited by feed coal
granularity requirements, is suitable for lump coal raw materials and is also suitable for pulverized coal raw materials; 2) the pressure in the furnace can be reduced, furnace body blowby can be reduced, the
coal gas recovery rate can be increased, the production safety can be improved, and the furnace body life can be prolonged; 3) the amount of
coke powder entrained by raw gas produced by the device is smaller, and
coal tar and coal gases with higher quality can be produced.