Sawdust biomass particle added with municipal sludge and manufacturing method thereof

Abstract

The invention discloses a sawdust biomass particle added with municipal sludge. The sawdust is firstly subjected to carbonizing treatment and then is modified, so that the toughness and density of inorganic carbon particle are improved, the combustion heat value of sawdust carbon residue is increased and the volatile component in burning process is reduced. Secondly, the straw stalk, orange peel and sunflower seed shell are subjected to fermentation treatment, so that a compact tissue structure is formed by the structure layer of the raw material and the high-content organic matter is formed. Thirdly, the modified municipal sludge and oyster shell powder are added and subjected to fermentation treatment, so that the combustibles in the organic raw materials are increased. Lastly, other valid auxiliaries are extruded and formed. The invention provides a sludge treating method which is economical, practical and high in processing capacity, and meanwhile, a sludge biomass fuel is prepared; the sludge biomass fuel can replace the natural coal and is easy to burn; the ash after burning is rich in elements including calcium, magnesium, phosphorus, potassium, sodium, and the like; the sawdust biomass particle is excellent thermal quick-acting organic manure and can solve the difficulty of municipal sludge unable to be directly returned to the field.

Description

technical field [0001] The invention relates to the technical field of biomass fuels, in particular to sawdust-based biomass particles added with urban sludge and a preparation method thereof. Background technique [0002] With the increasing demand for energy, the widely used non-renewable energy such as oil, coal, and natural gas is facing the problem of depletion. In order to solve the energy crisis that mankind is about to face, it is necessary to develop renewable new energy sources to replace non-renewable fossil fuels. Biomass energy, as a cheap and clean renewable energy, is attracting more and more attention from people. As a large agricultural country, our country has comparative advantages in raw material supply, energy demand and government policy support of biomass energy. big advantage. The source of sawdust and straw is abundant, the cost is low, and the sulfur content of sawdust is very low. The biomass pellet fuel prepared from it as a raw material replace...

AI Technical Summary

Problems solved by technology

However, the traditional biomass pellet fuel prepared by using sawdust and straw has many defects such as low calorific value, unsafe use of slagging boilers, excessive sulfur content polluting the environment, and large ash content.