Biomass as a Fuel

What is Biomass

The term biomass generally refers to renewable organic matter generated by plants through photosynthesis in which the solar energy combines carbon dioxide and moisture to form carbohydrates and oxygen.

Biomass generally have high moisture an volatile matter constituents and low bulk density and calorific value.

What is Gasification

Biomass gasification is basically conversion of solid fue® (wood/ wood-waste, I agricultural residues etc.) into a combustible gas mixture normally called Producer Gas. The process is typically used for various biomass materials and it involves partial combustion of such biomass. Partial combustion process occurs when air supply (02) is less than adequate for the combustion of biomass to be completed.

The gasifier is essentially a chemical reactor where various complex physical and chemical processes take place. Biomass gets dried, heated, pyrolysed, partially oxidized and reduced in this reactor as it flows through it.Four distinct ] processes take place in a gasifier:

Why Gasification

It is a Highly Efficient Process

Efficiencies (efficiency here is defined as that part of the biomass energy that is available in the producer gas generated from the biomass) in gasification rang from 70% to 85% depending on the mode in which the gas is being used.

In Bhakti Biomass Gasifiers, we promise an efficiency of 80-85% in Hot Gas Mode* and an efficiency of 70-75% in Scrubbed Gas Mode*.

It can be applied over a range of output ratings(5 Kw to 850 Kw )

Can be used for thermal applications & electricity generation

Low initial investment and cost of power production.

Plasma Pyrolysis:

  • Plasma is the fourth state of matter containing a significant number of electrically charged particles. A plasma arc torch increases the temperatures in the reactor gasification vessel to as high as 15000 – 20000 centigrade.
  • The high temperature conditions in plasma gasification results in the decomposition of organic compounds (such as plastic, used tires, agriculture residue, medical waste) into their elemental constituents, forming a high-energy synthesis gas(Syn Gas) of CO and H2. Thermal cracking of Tar, PCB, Dioxins, Furans etc by plasma pyrolysis in clean syngas.
  • The inorganic compound (glass, metal oxides, silicates, and heavy metals) is melted and converted into a dense, inert, non-leaching vitrified slag.
  • Therefore whereas the decomposition of organic waste produces synthesis gas which can be used for efficient production of electricity and / or heat, the inorganic waste decomposition produces slag which can be converted to vitrified block and grit for road construction.