Outdoor Wood Burning Furnace Forced Air

Outdoor Wood Burning Furnace Forced Air has simple structure, strong adaptability of raw materials, continuous use of equipment, and is suitable for various large-scale industrial energy equipment.Suitable for Fuel gas burning coal, boiler industry (steam boiler, heat transfer oil furnace, hot water boiler), smelting industry, (melting aluminum furnace, reverberatory furnace, etc.) drying industry (food drying, sawdust drying), spraying industry (hardware spraying, electroplating heating , greenhouses), construction industry (asphalt heating).

Product Display

Running Process

2.1 Biomass storage system

The biomass raw materials received by the biomass storage warehouse are stored after weighing and sampling to analyze the moisture and calorific value. During the production process, the biomass is sent to the vibrating screen through a transfer device such as a loader and a grab to filter out the unqualified organisms. The material is then sent to the atmospheric pressure silo of the biomass pressurized feed system via a screw conveyor and conveyor belt.

2.2 Pressurized feed

The biomass material stored in the atmospheric pressure silo enters and fills the lock bucket through the feeding device and the valve, and then the control system pressurizes the lock cylinder to 0.1-0.3 MPa with nitrogen gas, and the biomass fuel passes through the lowering valve and the lower The material device enters the pressurized feeding bin, and a screw conveyor is installed at the bottom of the pressurized feeding bin, and the biomass material is continuously sent to the human material gasifier by the screw conveyor. After the biomass locker is unloaded, the lock bucket will return to the normal pressure state, re-feeding and charging, and the next cycle of material transportation.

2.3 Biomass gasification and gas purification

The gasification furnace is the main equipment of the whole gasification system. The fluidized bed is used as the furnace type of the gasification furnace. The biomass conveyed from the pressurized feed tank enters the furnace reaction zone from the middle and lower part of the gasification furnace; in the gasification furnace At the bottom, air and oxygen are fed into the furnace as a gasifying agent. The biomass, air and oxygen in the furnace are thoroughly mixed to form a fluidized state. At the same time, the gasification temperature is 700-980 ° C, and the gasification pressure is Under the condition of 0.1-0.3Mpa, and the effective heat transfer and mass transfer in the high-temperature bed material, the gasification reaction speed is accelerated, and the high temperature of the components C0, H2, C02, CH4, H20, N2 and a small amount of tar can be finally formed. Gas.

Biomass raw materials contain a certain amount of ash, so ash will be generated during the gasification process, part of the ash is discharged from the bottom of the gasifier, cooled and sent to the storage system; another part of the ash can be passed from the downstream cyclone from the combustible gas The separation is carried out and the ash is discharged from the bottom of the cyclone and sent to the storage system. The combustible gas comes out from the top of the cyclone and enters the downstream waste heat boiler.

2.4 Heat recovery

The temperature of the combustible gas entering the waste heat boiler is about 900 °C. Because of the high temperature, the gas unit volume density is small. In order to reduce the volume and material grade of the gas transmission equipment, it is also necessary to ensure that the tar in the combustible gas does not condense, and the high temperature combustible gas After the waste heat boiler releases heat to cool to about 400 °C, and also according to the boiler operating parameters, the temperature drop is controlled by itself, and the low-pressure steam generated by the waste heat boiler is connected to the power plant pipe network system.

2.5 Gas transmission and combustion

After the flammable gas in the dust removal and waste heat boiler, the gas flow rate is about 5x104 Nm3/h, the temperature is about 400 ° C, and the pressure is about 0.2 MPa. The combustible gas is analyzed by online composition, and the flow rate of the combustible gas is calculated according to the heat of the input boiler, and a specific amount of combustible gas is sent to the independent gas burner of the coal-fired boiler to enter the boiler for re-combustion power generation. In the event of an accident, the flammable gas has an independent emergency discharge and shut-off system. The safety protection system of the gasifier will start an emergency stop, cut off the gasification system and the coal-fired boiler, and the flammable gas will be led to a safe area for treatment. The nitrogen displacement protection program, the gas discharge device is equipped with an ignition device and a nitrogen fire extinguishing device.

Technical Parameter

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