Complete two-stage slurry production equipment of water-coal-slurry and gasified water-coal-slurry by using low-rank coal fuel

Abstract

The invention relates to complete two-stage slurry production equipment of water-coal-slurry and gasified water-coal-slurry by using low-rank coal fuel, mainly used for fuel for industrial boilers and power station boilers and fuel for gasification furnaces. The complete two-stage slurry production equipment for water-coal-slurry and gasified water-coal-slurry from low-rank coal fuel comprises a low-rank coal raw material warehouse (1), a vibration feeder (2), a type conveyer (4), a crusher (5) of a reversible counterattack hammer type, a hopper lifter (6), a low-rank coal middle warehouse (7), a measuring belt machine (10), a spiral feeder (11), a high-concentration water-coal-slurry ball mill (12), a water-coal-slurry vibration sieve (13), a water-coal-slurry buffer tank (14), a water-coal-slurry filter (16), a stability treatment tank (17), a Homogenizing tank (19) and a slurry storage tank (21), wherein a bypass is divided from a discharge port of the high-concentration water-coal-slurry ball mill (12), is a fine slurry preparation system and comprises a rotary vibration sieve (27), a front inlet tank (28) of a fine grinding machine, a medium-concentration ultrafine vertical mill (31) and a slurry storage tank (29) of the fine grinding machine. The invention can improve the product concentration of the water-coal-slurry.

Description

(1) Technical field [0001] The invention relates to a complete set of production equipment for coal water slurry. In particular, it relates to a complete set of production equipment for two-stage pulping low-rank coal fuel coal-water slurry and gasification coal-water slurry. It is mainly used as fuel for combustion of industrial boilers and power plant boilers, and fuel for gasifiers in the coal chemical industry. (2) Background technology [0002] Conventional coal-water slurry is made of about 69% coal, about 30% water and a small amount of compound additives through grinding, mixing certain chemicals, filtering, stability adjustment and homogeneous ripening. A clean fuel that is a liquid fluid with a certain viscosity. At present, in general CWS plants, most of the pulping coals are made of high-quality coking coal, but coking coal resource reserves are small and the price is expensive, which can no longer meet the development of CWS industrialization. Therefore, coal ...

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Problems solved by technology

[0004] 1. Due to the short grinding time of the grinding raw materials in the high-concentration coal-water slurry ball mill, after entering the buffer tank through the outlet of the high-concentration coal-water slurry ball mill and stirring, it can only be the primary product of coal-water slurry, and the thixotropy of coal-water slurry is relatively weak. The yield stress is low, resulting in poor rheology of CWS and low stability o

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