Rice hull feeding device used for horizontal type chain-grate boiler

Abstract

A rice hull feeding device used for a horizontal type chain-grate boiler includes a hopper, the hopper is communicated with a wind closing fan through a blast pipe, the top of the wind closing fan is communicated with an air blower through a ventilation duct, the air blower is then communicated with a wind inlet pipe, the wind inlet pipe is further communicated with a wind outlet pipe, rice hulls pass through the hopper, and a packing auger is driven by a variable frequency motor to control the rice hull supply amount; a wind inlet of a fan is connected to the wind closing fan, and the rice hulls are sucked up through wind inlet of the fan; the wind is sent to a boiler tuyere through an exhaust duct of the fan, so as to blow the rice hulls and enable the rice hulls to float in the air and be subjected to fluidized combustion, and the afterwind returns to the wind inlet; and the packing auger is driven by the variable frequency motor to control the rice hull supply amount, therefore, the device has the characteristics of saving rice hull fuel, saving manpower, lowering cost and pollution to the environment, and ensuring rice hull fluidized combustion.

Description

technical field [0001] The invention belongs to the technical field of utilizing biomass energy to generate electricity, and in particular relates to a rice husk feeding device for a horizontal chain boiler. Background technique [0002] As society's demand for energy increases, fossil fuels, which are the main source of energy, are rapidly declining. Therefore, looking for a renewable alternative energy source has become the focus of widespread concern in society. Biomass energy is an ideal renewable energy source. It has a wide range of sources, and a large amount of industrial, agricultural and forest wastes are produced every year. In the world's current energy consumption, biomass energy consumption accounts for 14% of the world's total energy consumption, ranking fourth after oil, coal and natural gas. In developing countries, biomass energy (mainly corn, wheat, rice straw, rice husk, straw, wood, etc.) accounts for a relatively large proportion, reaching more than 5...

AI Technical Summary

Problems solved by technology

[0006] At present, the feeding device in the horizontal chain boiler in the past is belt transportation, and its disadvantages are: 1. It will cause dust to fly during transportation and pollute the working environment; 2. It requires a lot of labor; When it enters the furnace, it starts to burn, so the waste of rice husk fuel is caused; 4. When the rice husk is transported to the furnace by a belt, the rice husk is still burning in the furnace, and cannot be lifted up, and the combustion is insufficient, which will cause waste of rice husk fuel

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