Biomass straw briquetting fuel
1. Overview of biomass fuel (straw coal):
Straw fuel (ie biofuel) is a Solid wastes such as corn stalks, wheat straw, rice straw, peanut shells, corn cobs, cotton stalks, soybean stalks, weeds, branches, leaves, sawdust, bark and other agricultural crops are used as raw materials, which are crushed, pressurized, densified and formed. It becomes a modern clean fuel formed by compression and carbonization into small rod-shaped solid particle fuel. It is also an emerging special fuel for biomass power generation. It can also be directly used in traditional coal-fired boiler equipment in cities and can replace traditional coal.
2. Characteristics of "straw fuel":
Biomass briquette fuel has high volatile content, is easy to precipitate, has good carbon activity, is flammable, has less ash content, and ignites quickly, saving more fuel. , reduce usage costs. The shaped straw charcoal block is small in size, has a large specific gravity, is resistant to combustion, and is easy to store and transport. Its volume is only equivalent to 1/30 of the original straw, which is 10-15 times that of the same weight of straw. Its density is 0.9-1.4g/ cm3, the calorific value can reach between 3500-5500 kcal, and it is a highly volatile solid fuel.
3. Application scope of "straw fuel":
"Straw fuel" can replace firewood, raw coal, liquefied gas, etc., and is widely used in domestic stoves, heating stoves, and hot water boilers. , industrial boilers, biomass power plants, etc. In urban heating, heating, hotels, restaurants, bathing and other industries, the use of coal-fired boilers does not meet environmental protection requirements. Only oil-fired boilers can be used. The cost of fuel is three times higher than that of "straw fuel", which has caused problems for the industry. Heavy economic pressure.
IV. The main technical parameters of "straw fuel" after molding:
Density: 800-1400 kg/cubic meter; calorific value: 3700-4500 kg; ash content: 1-20 ;Moisture ≦15
5. Exhaust gas emissions after combustion:
Zero emission of C0; NO214 mg/cubic meter (trace amount); SO246 mg/cubic meter is far lower than the national standard. It is negligible; the smoke dust is less than 123 mg/cubic meter, which is far lower than the national standard.
6. Ash treatment after burning biomass fuel:
The burnout rate of biomass fuel can reach 96%, and the remaining 4% ash can be recycled as potassium fertilizer, realizing the "straw → fuel" →Effective cycle of fertilizer.