Plasma-chemical Technologies (During Development) Limited Liability Company “R & D Center PLAZER” Kiev E-mail: [email protected] Tel: [phone] Fax: [phone]

PLASMA – CATALYST OF COMBUSTION OF LOW-REACTIVE COALS
The plasma technology seems to hold the highest promise among the alternative technologies available for solving the problems of combustion of low0reactive coals. This technology provides a substantial increase in cost effectiveness and improvement in environmental indicators of power-generating plants working with solid fuel.
Plasmatron and its installation on a direct-flow coal torch
Decrease in formation NOx and mechanical undercombustion

plasma processing of low-reactive coals
Main principle of plasma-power technology is dramatic decrease in the required electric power
Multiplication of capacity
Plasma-jet reactor
Plasma jet
(10kW )
Coal torch
(200 kW)

Optimal utilization of the steam-plasma effects, leading to a substantial increase in rates of gasification and combustion (10 and more times) of coal particles
The scheme of a plasma-jet reactor
Quartz pipe muffle
Combined
Plasma-coal torch
Plasmatron
Secondary air
muffle furnace
Plasmatron
Feeder of a coal dust
Control panel
Power supply
Water steam

Dramatic decrease in the required electric power (by an order of magnitude) provides real technical and economical preconditions for efficient and wide-scale application of this technology in
power generation
Using such combined plasma-coal torch devices, it is possible to realize different sophisticated energy fuel-utilization technologies. They include:
plasma ignition of the coal-dust flame (fuel oil free kindling of boilers, lighting of the coal-dust flame, stabilization of the liquid slag yield in furnaces with liquid slag removal);
electric-thermochemical preparation of fuel (ETCPF) for combustion;
coal distillation;
plasma-steam coal distillation, production of synthesis gas;
integrated processing of low-grade solid fuels in plasma reactors;
processing of coal production wastes – coal slime.

The average gain of manufacture of the solar electric power in the world with 1990 г on 2001 г has made 22 % a year. The nearest years higher rates of growth c corresponding escalating of manufacture highly purity solar silicon - from 65000 tons in 2001 г up to 350000 tons in 2010 are expected
МВт
The solar electric power

The forecast
of the industries highly purity silicon
Opportunities of electronic industry
Expected need

The price of silicon is defined by its cleanliness and today this dependence looks as follows

Manufacture of solar silicon
Equilibrium output of silicon
(temperature, pressure)

Manufacture of solar silicon
According to thermodynamic calculations of 100 % decomposition of monosilane occurs already at 700 °C.
Experimental data give higher value of temperature Т « 1000 °C, but in any case disintegration SiH4 occurs
At temperatures a lot of smaller temperatures of fusion of silicon
Тпл. Si = 1690 °C.

Machines of electroarc decomposition of monosilane should meet following requirements:
1. To provide a high degree of transformation of silicon in the condensed phase;
2. To provide necessary granulemetric structure of a received product;
3. To exclude pollution of received silicon by products of erosion of electrodes;
4. To have there is enough high efficiency and small power inputs.

Dependence of power inputs on temperature

Manufacture of solar silicon
At optimum a temperature mode and a degree dilution SiH4 (1:2) and as considering efficiency plasmatron (> 0,5) a level Power inputs it is possible to estimate as 15-25 МДж (4-6 kw hour) on kg Si.
The level of development of plasma technics reached to the present time will allow to count on creation of installation by capacity 1-2 МВт and Productivity up to 300-400 kg/hours Si.

Plasma-chemical reactor
for pyrolysis of silane

Hydrogen plasmatron 200 kw
for pyrolysis of silane

Demonstration machine of plasma pyrolysis of silane

Plasmatron in operate for
pyrolysis of silane

Origin of particles of silicon from steam in plasma

Productivity of the plasma unit with plasmatron capacity of 200 kw makes 50 kg/hours of silicon. It provides at three-shift work and 220 working days in a year 200 Ton/year
Manufacture of solar silicon

PLASMA-ARC TECHNOLOGY OF PRODUCTION OF NEW ECOLOGICALLY PURE GASEOUS FUEL
Such gas is formed in conditions of very intensive magnetic fields
in the electric arc shipped in processed liquid raw material

PLASMA-ARC MACHINE OF PRODUCTION OF NEW
ECOLOGICALLY PURE GASEOUS FUEL FOR MOTOR TRANSPORT

DEVELOPMENT OF ELECTROARC GENERATORS OF
STEAM-WATER PLASMA
Steam Plasmatron
40 КW
Laboratory Steam Plasma
Machine by capacity of 40 KW