Pipeline feeding system for coarse particle coal slurry and feeding method thereof

Abstract

The invention relates to a pipeline feeding system for coarse particle coal slurry. The system comprises a water tank, a coal supply funnel, a PLC control system, an inlet pipe of a slurry pump and the slurry pump. A water inlet pipe of the water tank and a water outlet pipe of the water tank are arranged at the lower end of the water tank, an inlet valve of the water tank is arranged on the waterinlet pipe of the water tank, and an outlet flow regulating valve and an outlet electromagnetic flowmeter of the water tank are arranged on the water outlet pipe of the water tank, a coal supply pipeis arranged at the lower end of the coal supply funnel, a plate gate is arranged on the coal supply pipe, the coal supply pipe and the water outlet pipe of the water tank which are gathered communicate to the inlet pipe of the slurry pump, an inlet pipe pressure transmitter and an inlet valve of the slurry pump are arranged on the inlet pipe of the slurry pump, the slurry pump is arranged at thetail end of the inlet pipe of the slurry pump, and an outlet pipe pressure transmitter of the slurry pump, an outlet valve of the slurry pump and a densimeter are arranged on the outlet pipe of the slurry pump. The system avoids phenomena of blockage and density fluctuation of the coarse particle coal slurry in pulping, slurry storing and conveying links in a conventional process; cavitation is avoided; and the stability of conveying density is guaranteed.

Description

technical field [0001] The invention relates to a coal slurry pipeline feeding system, in particular to a coarse particle coal slurry pipeline feeding system and a feeding method thereof. Background technique [0002] The traditional coal slurry pipeline feeding system is generally composed of three links: slurry making, slurry storage, and feeding and transportation. It is difficult for the storage tank agitator to achieve the uniformity of the concentration of the coarse coal slurry in the storage tank, so blockage accidents are prone to occur at the outlet of the storage tank, resulting in interruption of production continuity. At the same time, the concentration changes greatly during the transportation process, which is very Difficult to guarantee the continuity and stability of delivery. Contents of the invention [0003] The purpose of the invention is to solve the problems of frequent faults in the traditional coarse-grained coal slurry feeding system, coal slurry...

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Problems solved by technology

[0003] The purpose of the invention is to solve the problems of frequent faults in the traditional coarse-grained coal slurry feeding system, coal slurry blocking the outlet of the slurry storage tank, and a large variation range of coal slurry concentration. The invention provides a coarse-grained coal slurry pipeline feeding The system can solve the phenomenon of coal slurry plugging, poor outlet at the bottom of the tank and unstable coal slurry concentration

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