Temperature-controllable rotating pulverized coal combustion system integrating powder making, storage and supply

Abstract

The invention provides a temperature-controllable rotating pulverized coal combustion system integrating powder making, storage and supply. The system comprises a powder making machine, a powder storage tank and a combustor. A small powder collector and a big powder collector are arranged on the upper portion of the powder storage tank. A powder feeder is arranged at a discharge port of the powder storage tank. A second fan is arranged below the powder feeder. A coal feeder is arranged at a feed hopper of the powder making machine. A first fan is arranged on the lower portion of the powder making machine. Wind paths are arranged between the powder making machine and the big powder collector, between the first fan and the small powder collector, between the first fan and the second fan and between the second fan and the combustor. The temperature-controllable rotating pulverized coal combustion system integrating powder making, storage and supply is controlled by an electric control system in a centralized mode, achieves integrated operation of powder making, powder storage, powder supply, air supply and combustion, and provides a powerful guarantee for application to an industrial furnace and asphalt particle mixing equipment; the whole process is carried out in a closed pipeline, so that the system is clean, free of pollution, easy to operate and convenient to use, and the furnace temperature is controllable.

Description

technical field [0001] The invention relates to a pulverized coal combustion system, in particular to a temperature-controllable rotary pulverized coal combustion system integrating pulverization, storage and supply of pulverized coal. Background technique [0002] China is a large coal-producing country with cheap and abundant coal resources, which are widely used in various industries. How to use it efficiently and environmentally friendly is the content that every industry needs to study in depth. At present, there are mainly two types of similar products used in industrial furnaces and asphalt pellet mixing equipment: one is to use a coal pulverizer to grind lump coal with a particle size of less than 25mm into coal powder of about 90 mesh and spray it directly. burn in the burner. The advantage of this type is that coal grinding and powder injection are integrated, pulverization and combustion are performed on site, and the whole system has a simple structure ...

AI Technical Summary

Problems solved by technology

The disadvantage is that pulverization and powder storage are separated, and pulverized coal is a flammable product, which is not safe and environmentally friendly during transportation and storage.

If the powder storage tank is too small, it cannot meet the requirements of use, and if it is too big, it is difficult to implement safety measures.

At present, stainless steel storage tanks are used abroad, and the welding requirements are extremely strict. The internal welds are required to have no burrs, and the interior is protected by inert gas to prevent coal dust from exploding. In addition, protective measures such as safety valves need to be installed, and the project cost Very high, a 100-ton powder storage tank costs nearly one million RMB

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