Plasma cogeneration of waste and Aquaponics

8/12/2019 Plasma cogeneration of waste and Aquaponics

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Input Process Output

Waste material

Additives

SyngasThermal

exchanger

Catalyst

Air and oxygen

Energy

Plasmareactor

Ash output

Syngas

purifying

Syngas

fuel

Constructionmaterial


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Inputchoppedwaste

Inlet grill anddryer

Crudesyngas

Gasificationarea

Powersupply

Plasmatorch

Molecular

dissociation

Alkaline ash

Plasma torch


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The plasma is produced by means of electric arcs by applying hightension energy to the plasma torch, at atmospheric pressure.That ionized gas transports the heat to the waste material which ismostly a combination of carbon, hydrogen and oxygen atoms .The heated waste and ultraviolet radiation from plasma processdissociate the macromolecules of material into individual atomsthat collide between them leadin to ions and electrons.

These processes occur simultaneously, between 350C and12001300C.The effect of these processes is the producing of a clean hydrogen-rich syngas ( combination of hydrogen H2, methan CH4, carbon

monoxide CO and carbon dioxide CO2 ) with a high calorific valueand very low levels of residual tars, heavy metals and acid gases.The syngas output temperature is 400C.


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Refinedsyngas

Cooling andconditioning

Powernetwork

Syngas fuel

Reactor

Cogenerationengine

5% ashmaterialoutput


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Exhaustemission

Heavymetalemission


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Economic parameters for the five thermal technologies were determinedsuch as capital investment, operation and maintenance, by-product

production and sales, and residue produced and costs. Using theparameters of capital investment, plant capacity, energy production,operation and maintenance costs, tipping fee, green tags, energy sales,and by-product residues - an economic analysis was performed todetermine the net revenue (before taxes) of each thermal process as

shown in next Figure.


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Plasma Arc Gasification also combined these attributes:

Thermal efficiency

Process variety of different solid wastes

Minimal pretreatment/presorting of solid wastes

Production of syngas for conversion into energy sources such assteam, electricity and/or liquid fuels

Environmental appeal as the solid by-product, ash, can be used as aconstruction material ( roads, concrete, insulation ) or in agriculture

fertilization .

Environmental appeal from the use of syngas to produce variousenergy products, while any discharged gaseous effluents can betreated by currently acceptable environmental processes

Minimized if not eliminated need for landfill

Ability to process and eliminate wastes from existing landfills.


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For vegetables, day temperatures should be 21 -26 C and nighttemperatures around 16 -18.5 C, (although many new varietiesdo best with little difference between day and night temperature.For seedlings, the temperatures should be constant, 20 -22 C ,

then gradually acclimate the plants to the diurnal temperaturesbefore transplanting.

Good air circulation is necessary for proper cooling, heating,CO2 replenishment, and removal of undesirable gases, such as

.

heating, cooling, and CO2 systems in order to obtain peak

efficiency. The heat/cooling and CO2 are supplied by the plasma system

connected to hydroponic system, this way enhancing plasma

systems economic efficiency and reducing hydroponic systemcosts.


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Municipal waste,biomass, plastics,

rubber, hazardouswaste, oil waste syngaz

Electricnetwork

Plasmagasifier

5% ash

Hydroponicgreenhouse

CO2

Fishery

Distilled water


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Plasma cogeneration of waste and Aquaponics