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Renewable Energy

From Waste to Energy

“Renewable Energy has the ability to lift the Poorest Nations to New Levels of Prosperity”
Mr Ban Ki-Moon UN Secretary General

Renewable energy can be defined as the energy we derive from naturally replenished resources, like sunlight, wind, rain, tides, and most importantly the commodities used and consumed by people.
Renewable Energy has replaced conventional fuels in four distinct areas of:-
Electricity generation
Heating
Oil and
Off grid energy services (carbon)

Based on the report of 2014 Renewable Energy Policy Network for 21st Century (REN21), renewables energy contributed 19 percent to global energy consumption and 22 percent to electricity generation in year 2012-13. Out of this production, 9% was obtained from traditional biomass, 4.2% heat energy (non-biomass), 3.8% hydro electricity and 2% from wind, solar, geothermal. Some countries get most of their power from renewables (Norway - 98%, Brazil - 86%, Austria - 62%, New Zealand - 65%, Sweden - 54%). In same year (2013), the worldwide investments in renewable technology raised to more than US $214 billion, major investors being China and USA.

According to various independent surveys in public, a strong opinion for promoting renewable energy exist among the masses. About 30 countries, around the world already have renewable energy contributing more than 20 percent of energy supply. National renewable energy markets are projected to continue to grow strongly in the coming decade and beyond.
Interestingly renewable energy projects are quite flexible. In developing countries, energy crisis is always consider a barrier for economical and social development. To suit their needs, small scale rural and remote areas projects can easily be established with in own integral limited resources.
Renewable biofuels have also contributed in significant reduction in oil consumption. Only in US oil use fell 8.5% from 2005 to 2014. The 93 billion litres of biofuels produced worldwide in 2009 displaced the equivalent of an estimated 68 billion litres of gasoline, equal to about 5% of world gasoline production.

Gasification.

Gasification is the use of heat to transfer solid biomass or other carbonaceous solids in to a synthetic “natural gas like” flammable fuel. Through gasification, we can convert nearly any dry organic matter into a clean burning fuel which ultimately can replace fossil fuel in many applications. Today gasification has gain the required abilities to transform common waste into a flexible gaseous fuel, which can be used to run internal combustion engine, steam engine, furnace or flamethrower.

Processes during Gasification

Besides various complex physical and chemical processes, following four important steps take place in gasifier

1. Drying of the biomass
2. Pyrolysis
3. Combustion
4. Reduction

Application of Gasification

In view of the decreasing reserves of fossil fuels and due to world’s awareness to reduce dependency from imported fossil fuel, there is growing interest in producing syngas from renewable source biomass i-e biosyngas. The role of biomass is becoming more significant in future global energy infrastructure for generation of power or heat. In the coming days, the dominant technology to utilise biomass will be gasification.
The end product (syngas) is directly used for generation of power or heat This can be either in stand alone combined heat and power (CHP) plants or by co-firing of the produced gas in large scale power plants. Gasification can be used for:-

Power Generations
Generation of powers and selling to National Grid
Generation of Power for Factory
Generation of Power for village / town electrification
Generation of Power for irrigation and pumping activities

Thermal Application
Industrial Furnace / kilns
Industrial Ovens
Industrial Dryer / Hot Air generation
Industrial Boiler (hot water, steam, thermal Oil)

Biomass Gasification Power Plant

The basic purpose of biomass gasification power generation system is to convert Agriculture / forestry products and wood remains (including rice husks, wood powder, branches, offcuts, corn straws, rice straws, wheat straws, cotton straws, fruit shells, coconut shells, palm shells, bagasse, corncobs etc.) into combustible gas. It is then used as fuel in gas engine to generate electricity. Biomass gasification system can function on a small piece of land and is environment friendly. It’s one of the most effective way of biomass utilization.

Type of Biomass that can be utilized in Gasification Power Plant:

Rice Husk
Wood Chips
Saw Dust
Bark
Wood Waste
Forest residue
Rice Straw
Wheat Straw
Cotton Straw
Corn Stalk
Corn Cob
Bagasse
Peat
Cocoa Husk
Coconut shell
Bamboo Waste
Willow
RDF pellets
Empty Fruit Bunch (EFB)
Palm Kernel
Shell
Palm Fiber
Energy Crops
Paper Mill
Waste
Chicken Dung
and etc.


Biomass Gasification Power Plant Process

Power generation through Biomass gasification involve three steps.

  • Biomass Gasification. it convert biomass into syngas.
  • Syngas Purification. The gas produced through gasification is usually contaminated with dust, coke, tar etc.
  • Syngas is purified through purification system to ensure smooth operation of gas engine.
  • Power Generation. The high temperature gas is then used for power generation through various means.


Advantages

  • Flexible. The complete system with full paraphernalia can be used according to various power plant capacity requirements with no downsides. All ensuring high power generating efficiency. Different capacities of biomass power generation plant can be designed with the guidance of our dedicated Consultants.
  • Clean Technology. The emission of Nitrogen oxides, carbon dioxide, sulphur dioxide and other toxic gases is very limited in the technology we provide. It has no effects on environments.
  • Economy. A small size biomass gasification power plant recommended / provided by us, is also economical and profitable, not compromising on quality and reputation. These power plants for renewable energy are simple to operate, require less man power, self sustainable and can be established on a decent piece of land.

Carbonization.

Carbonization is one of the effective means of utilizating MSW, where garbage is used as raw material to obtain a high quality man made carbon. Combustable garbage carbonization is a process in which waste is treated in high temperature pyrolysis chamber in a prefixed environment, to obtain end result of man made carbon. More than 3 decades research has now converted this technology into a simple and low energy consumption process. The by product / emissions are clear, smoke-free, sulphur-free, no heavy metals and high calorific value. The technology is presently widely promoted for municipal solid waste, rural, industrial, paper wastes, industries and sectors of municipal sludge and soil improvement. It can reduce the size of combustible waste by more than 95% than direct landfill. It also eliminates side effects of garbage stacking.

The content of fixed carbon in the end product of garbage carbonization process “the artificial carbon" has a high content of fixed carbon (approx 90%), which is nearly double to the coal (i-e 55% of fixed carbon), with good flammability being a new advanced fuels The partial carbonization of waste can be activated to a variable scale to achieve a ratio of up to 75% of fixed carbon, which is the ideal material for adsorption of activated carbon.

Garbage carbonization treatment technology is one of the best waste treatment technology in vogue. The end product of this processing technology is not only renewable energy, but it works on the principles of reduce, recycle and reuse.