Biomass and coal dual-purpose boiler

Abstract

A dual-purpose boiler for biomass and coal, including a feed combustion device, a heating device, and a negative pressure generating device, the feed combustion device is connected to the heating device, the negative pressure generation device is connected to the heating device, and the feed combustion device is used for burning coal or biomass , and transport the generated high-temperature flue gas to the heating device. The heating device has a coaxially arranged columnar flue, a columnar annular water channel, and a columnar annular fire channel. The columnar flue communicates with the columnar annular fire channel. The flue is connected, and the columnar annular flue is also connected with the high-temperature flue gas inlet of the feeding combustion device. The columnar annular flue of the heating device is used to fully burn the high-temperature flue gas, and fully absorb the heat carried by the high-temperature flue gas and the high-temperature flue gas. The heat generated by combustion is transferred to the heat carrier in the columnar annular water channel. The columnar flue of the heating device is used to collect the flue gas in the columnar annular fire channel and discharge the flue gas under the action of the negative pressure generating device.

Description

technical field [0001] The invention relates to a boiler, in particular to a biomass and coal dual-purpose boiler. Background technique [0002] The boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electrical energy in the fuel, and the boiler outputs steam, high-temperature water or organic heat carrier with certain thermal energy. The hot water or steam generated in the boiler can directly provide the required thermal energy for industrial production and people's life, and can also be converted into mechanical energy through a steam power device, or converted into electrical energy through a generator. Boilers that provide hot water are called hot water boilers, which are mainly used in life and also have a small amount of applications in industrial production. Boilers that generate steam are called steam boilers, often referred to as boilers, and are mostly used in thermal power plants, ships, locomotives, and industrial ...

AI Technical Summary

Problems solved by technology

[0004] However, the existing coal-fired boilers have the following technical problems: because coal-fired boilers do not convert all the heat effectively, some of them are consumed reactively, and the current coal-fired hot water boilers generally have unreasonable internal structures and uncompact layouts. Short flue gas flow, small heating area and other problems lead to poor heat transfer effect of the boiler, slow heating speed, large amount of flue gas, and high heat carried, resulting in low thermal efficiency of the boiler and high energy consumption. Coal can only be used as fuel instead of Combustion of biomass as fuel

Images