Fine coal low-temperature destructive distillation kiln

Abstract

The invention relates to a fine coal low-temperature destructive distillation kiln, which is characterized in that a fire wall is arranged in a furnace wall of a kiln body, a fire path is arranged in the fire wall, the upper part of the fire path is communicated with a smoke evacuation pipeline, the bottom of the fire path is communicated to a gas combustor, the gas combustor and a gas pipeline are communicated to an air pipeline, at least one charing chamber is arranged at the inner side of the fire wall, the upper part of the charing chamber is communicated to a feed opening, the upper part of the feed opening is connected to a frequency conversion spiral feeder, the upper part of the frequency conversion spiral feeder is connected to a bunker at the top of the kiln, an upper row precipitate gas main pipe which is connected to the charing chamber is laterally arranged at one side of the feed opening, the upper row precipitate gas main pipe is communicated to a gas recycling pipe, a quenching water groove is arranged at the bottom of the charing chamber, a frequency conversion spiral discharging machine is arranged at the lower part of the quenching water groove, a belt conveyor is arranged at one side of the frequency conversion spiral discharging machine, the charing chamber is composed of three small charing chambers, so that the fine coal can be uniformly distributed, the destructive distillation kiln is benefit for collecting gas, and has the advantages of uniform heating, adjustable temperature and energy saving.

Description

technical field [0001] The invention relates to a dry distillation furnace, in particular to a pulverized coal low-temperature dry distillation kiln. Background technique [0002] Jurassic coal belongs to long-flame coal and non-caking coal. It has the characteristics of low ash, low sulfur, low phosphorus, low ash melting point, high calorific value, high inert component content, and high calcium oxide content. It is a high-quality chemical coal. And power coal, suitable for low and medium temperature dry distillation to produce semi-coke. However, in the current low-temperature dry distillation industry, pulverized coal cannot be comprehensively utilized, product quality is not ideal, and environmental protection issues have not been fundamentally resolved. [0003] Semi-coke is fired from the high-quality Jurassic clean coal abundant in Shenfu Coalfield. As a new type of carbon material, it has high fixed carbon, high specific resistance, high chemical activity, low ...

AI Technical Summary

Problems solved by technology

Generally, semi-coke is quenched by wet method, and the produced semi-coke contains a lot of water, which limits the use of semi-coke, increases transportation costs, and requires additional energy to dry it.

Moreover, the waste steam generated during the coke quenching process contains a large amount of toxic and harmful substances, which deteriorates the on-site operating environment and pollutes the atmosphere

The coke quenching process produces a large amount of phenolic wastewater, which requires a lot of cost to treat

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