System and method for eliminating coal slime frozen blocks in wet coal slime of power plant in winter

Abstract

The invention discloses a system and method for eliminating coal slime frozen blocks in wet coal slime of a power plant in winter. The system comprises a heating pipeline system connected with a turbine unit circulating water waste heat system of the power plant, and specifically comprises a circulating water pipeline led out of the turbine unit circulating water waste heat system of the power plant, a first heating pipeline and a second heating pipeline. The first heating pipeline is arranged on a hopper, the second heating pipeline is arranged on the wall of a stirring silo, and the first heating pipeline and the second heating pipeline are connected with the circulating water pipeline. By adoption of the system and method for eliminating the coal slime frozen blocks in the wet coal slime of the power plant in winter, melting of the large frozen blocks is facilitated, accordingly safety and conveying efficiency of a wet coal slime conveying system are guaranteed, and combustion of a boiler is guaranteed.

Description

technical field [0001] The invention relates to a system and method for eliminating frozen blocks of wet coal slime in a power plant in winter. Background technique [0002] In the production of a thermal power plant, the boiler generates high-pressure steam, and the steam drives the steam turbine to do work, and then the steam turbine drives the rotor of the generator to rotate to drive the magnetic field to rotate and cut the stator coil to generate electricity. [0003] Most factory boilers are circulating fluidized bed boilers, and the fuel of some factories is the by-product coal slime after coal washing. There are two ways to transport the boiler slime. The second type is that the wet coal slime is mixed with water to form a similar slurry, and then directly transported to the furnace through a thick slurry pump and pipeline. [0004] The dry / wet coal slime is transported and mixed in proportion to make the boiler operate stably and output qualified high-pressure stea...

AI Technical Summary

Problems solved by technology

[0005] Especially in factories located in the north, the weather is cold and dry in winter. In the past production, the coal slime was often frozen into blocks after long-distance transportation. After the coal slime passes through the hopper and the powerful mixing bin, some large pieces of frozen wet coal slime will still accumulate and stay on the vibrating screen, and even freeze twice, causing the vibrating screen to be blocked

Even sometimes the stirring rod is broken and damaged due to the freezing block being too hard, resulting in the shutdown of the conveying system

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