Biomass fuels are mostly environmentally-friendly new energy sources produced by processing stem crops. The diameter is generally 6~8 cm, the length is 4~5 times the diameter, the crushing rate is less than 1.5%~2.0%, and the dry basis moisture content Less than 10%~15%, ash content is less than 1.5%, sulfur content and chlorine content are both less than 0.07%, and nitrogen content is less than 0.5%. If additives are used, they should be agricultural and forestry products, and the type and quantity used should be indicated. The EU standard does not provide specific values ​​for the calorific value of biomass fuels, but requires sellers to mark them. The Swedish standard requires that the calorific value of biomass fuel should generally be 16.9 MJ.

About biomass

According to the Swedish and EU classification standards for biomass particles, if the intermediate classification is taken as an example, biomass particles can be roughly described as the following characteristics: the diameter of biomass particles is generally 6-8 mm, and the length is its diameter. The crushing rate is less than 1.5%~2.0%, the dry basis moisture content is less than 10%~15%, the ash content is less than 1.5%, the sulfur content and chlorine content are both less than 0.07%, and the nitrogen content is less than 0.5%. If additives are used, they should be agricultural and forestry products, and the type and quantity used should be indicated. The EU standard does not propose a specific value for the calorific value of biomass particles, but requires sellers to mark it. The Swedish standard requires that the calorific value of biomass particles should generally be 16.9 megajoules.

At present, the granulation methods adopted in our country are all traditional production methods:

1. It is the same as the existing feed pelletizing method, that is, the raw materials are added from the inside of the ring die, and the pellets are formed by rolling and extruding the ring die through a pressing roller.

2. Including raw material drying, pressing, cooling, packaging, etc. This process requires a large amount of energy. First, during the pellet compression molding process, the pressure reaches 50-100MPa, the raw material deforms and heats up under high pressure, and the temperature can reach 100℃～120℃. The driving of the motor requires a large amount of electric energy; , The humidity of the raw materials is required to be about 12%. To achieve this humidity, many raw materials must be dried before they can be used for granulation. Third, the temperature can reach 95℃～110℃) to be cooled before packaging. The energy consumed by the latter two processes accounts for 25% to 35% in the whole process of granulation. In addition, the machine wears a lot during the molding process, so the manufacturing cost of the traditional pellet molding machine is relatively high.
Biomass boiler is a kind of boiler that burns biomass briquette fuel. It runs environmentally friendly and saves fuel. It is a boiler that is now recommended by the society. Biomass boilers are also divided into many types, including biomass heating stoves and biomass cooking and heating. Furnaces, biomass hot water boilers, biomass numerical control boilers, etc. Biomass fuel is a high-density pellet or block fuel formed by processing agricultural and forestry waste.

Biomass boiler is a type of boiler. The boilers that use biomass energy as fuel are called biomass boilers. They are divided into biomass steam boilers, biomass hot water boilers, biomass hot blast stoves, and biomass heat conduction oil boilers.
Biomass fuel is a new type of fuel supported by the state. Biomass fuel refers to crops and solid wastes such as corn stalks, wheat stalks, cotton stalks, straw, rice husks, peanut husks, corn cobs, branches, leaves, sawdust, etc. As a raw material, it is crushed, pressurized, and densified to form a “biomass fuel”. It is a renewable resource.

The benefits that the use of biomass boilers can bring to customers are mainly reflected in two aspects:

1. It can greatly save operating costs. For every 600,000 calories (1 ton of steam) generated, 160Kg of fuel consumption is about RMB 208, while oil-fired boilers need to consume 67Kg of light diesel, which is about RMB 435.

2. It can greatly reduce pollutant emissions.