Every year, global agricultural production generates hundreds of millions of tons of various agricultural wastes, most of which exist in the form of straw. As the world’s leading straw burning industry leader, Depp’s new source solutions have been applied in more than 60 power plant projects in Europe and China. Biomass straw boilers are composed of a series of core systems including water-cooled vibrating grate, which can better cope with various straw types such as wheat, corn and rice.
Straw is a by-product of agricultural production, mainly including dried stalks of grains and legume crops with grains and bran removed. Conventional straw crops include wheat, oats, barley, rice, rye, millet and other related varieties. The output of straw waste is usually half of the grain output, and therefore becomes the largest agricultural waste type. If the straw is expanded to other vegetation waste types, it also includes some wood straw types. Depu Xinyuan is a leading well-known straw waste combustion expert with relevant experience in dealing with various straw direct combustion and more than 60 different types of fuels.
Pioneer, advocate and practitioner of China’s biomass energy and ecological environment management
A large amount of water in the combustion water evaporates during combustion, and fuels with a moisture content exceeding 20% will increase the risk of corrosion. The composition of dry fuel mainly contains 50% carbon, 6% hydrogen, 42% oxygen and nitrogen, sulfur, silicon, alkali and chloride. Flue gas containing chlorides and alkali metals will generate sodium chloride and potassium chloride, which will cause serious corrosion to the boiler inner wall and pipes. The ash content is about 2-10%, with an average content of 4%. High-ash fuels are prone to coking and slagging, increasing operation and maintenance costs. Understanding the fuel chemical composition and combustion characteristics is particularly important in the design and operation of straw-throwing biomass power plants.
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