Heating system using biomass as boiler fuel and vertical energy-saving boiler

Abstract

The invention discloses a heating system using biomass as boiler fuel and a vertical energy-saving boiler. The renewable biomass is used as the boiler fuel; the biomass enters an arched hearth formed by cold-water wall pipes in the boiler; the hearth is arched; the temperature of the cold-water wall pipe is increased by heating; the biomass fuel ash falls into a burning chamber below the hearth; the hot air flow is burnt downwards and enters the burning chamber and upwards scours a transverse water pipe; the temperature of the transverse water pipe is increased by heating; then the transverse water pipe transversely enters an energy saver outside the boiler to scour the fin pipe of the energy saver; the temperature of the fin pipe is increased by heating; and finally, the smoke is discharged by the energy saver. In the vertical energy-saving boiler, a convection hole on the boiler shell is externally connected with an energy saver, the fin pipe is longitudinally arranged in the energy saver and communicated with a water collection tank of the energy saver, and the water in the fin pipe and boiler is subjected to enough water circulation; one end of the energy saver is communicated with a boiler liner port, and a smoke outlet is arranged at the other end of the energy saver; and the boiler energy saver increases the heating area, improves the heat efficiency, saves the energy and lowers the cost.

Description

technical field [0001] The invention relates to boiler products, in particular to a heating system and a vertical energy-saving boiler utilizing renewable biomass for combustion. Background technique [0002] Small boilers are widely used in the market. Schools, hospitals, township clothing, non-staple food and other processing enterprises far away from main cities and remote areas need small boilers for heating. The vast rural breeding industry needs heat energy. Renewable biomass energy, such as orange stalks, rice bran, etc., can be used in small-scale low-pressure domestic boilers. [0003] At present, most small-capacity domestic boilers adopt the structure of vertical fire tube boilers or improved vertical horizontal water tube boilers, which have the advantages of simple structure and small footprint, but generally suffer from insufficient output, low operating thermal efficiency, High exhaust gas temperature and other fatal shortcomings. The thermal efficiency of tr...

AI Technical Summary

Problems solved by technology

[0003] At present, most small-capacity domestic boilers adopt the structure of vertical fire tube boilers or improved vertical horizontal water tube boilers, which have the advantages of simple structure and small footprint, but generally suffer from insufficient output, low operating thermal efficiency, High exhaust temperature and other fatal shortcomings, the thermal efficiency of traditional products is about 50%, and the exhaust temperature is above 300 °C, which does not meet the national energy saving and emission reduction requirements

[0004] Boilers using renewable biomass as fuel emerged as the times require, but most of them use the original coal-fired vertical boilers, which generally have disadvantages such as low thermal efficiency and high exhaust gas temperature. At the same time, there are also theoretical air volume ratios of biomass fuels. Coal and other fuels are too large, and the setting of the boiler furnace needs to consider the problem of ensuring sufficient air and volume for biomass combustion

In order to increase the heating area of ​​boiler water pipes and improve thermal efficiency, due to the limitation of the furnace structure, the installation of a large number of water pipes is limited to a certain extent, and the consumption of steel will be significantly increased, which will increase the cost of equipment

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