Arc Plasma for Materials Detoxification and their Conversion

2010 ◽  
Vol 13 (1) ◽  
Author(s):  
Zbigniew Kolacinski ◽  
Lukasz Szymanski ◽  
Grzegorz Raniszewski
Keyword(s):  
Laboratory Testing ◽  
Building Materials ◽  
Electric Arc ◽  
Toxic Waste ◽  
Arc Plasma ◽  
Plasma Reactors ◽  
New Approach ◽  
Chemical Reagents ◽  
Waste Destruction ◽  
Waste Conversion

AbstractThe paper presents own experience examples of plasma employing methods for gas and fluid waste destruction and solid waste conversion into valuable materials or products. Three of own design plasma reactors ROTARC, SPIRARC, PDUCR have been successfully used in the laboratory testing for gas and fluid chlorinated wastes and spent fluid chemical reagents destruction. A new approach to utilisation of mineral wastes using electric arc has been also presented. An immersed arc-plasma furnace IAF has been designed for this purpose. The conversion of toxic waste to the form of environmentally friendly and useful building materials is presented.

Plasma Destruction of Toxic Chloroorganic Wastes Towards Zero Residues

2004 ◽  
Vol 7 (1) ◽  
Author(s):  
Krystyna Cedzyńska ◽  
Zbigniew Kolaciński
Keyword(s):  
Decomposition Methods ◽  
Chlorine Content ◽  
Arc Plasma ◽  
Plasma Reactors ◽  
Solid Product ◽  
Gaseous Products ◽  
Pcb Congeners ◽  
Rotating Arc ◽  
Waste Destruction

AbstractThe most effective decomposition methods were chosen for chloroorganic compounds on the basis of thermochemical calculations. The two rotating arc plasma reactors have been applied in these waste destruction processes. Gaseous products with high calorific values were obtained from simple chloroorganic compounds. PCB congeners with a high chlorine content were melted with chosen oxides yielding a useful solid product.

Plasma parameters in atomic-emission spectral analysis of phosphate concentrates of the fission products

2019 ◽  
Vol 85 (2) ◽  
pp. 17-22
Author(s):  
M. I. Khamdeev ◽  
E. A. Erin
Keyword(s):  
Spectral Analysis ◽  
Chemical Composition ◽  
Reference Materials ◽  
Fission Products ◽  
Atomic Emission ◽  
Electric Arc ◽  
Physical Parameters ◽  
Arc Plasma ◽  
Atomic Emission Spectral Analysis ◽  
Excitation Processes

Physical parameters of electric arc plasma as well as their time dependences are calculated when analyzing phosphate precipitates of the fission products of irradiated nuclear fuel. Phosphate concentrates of the fission products are known for their complex chemical composition and high thermal and chemical stability. Hence, direct atomic emission spectral analysis of phosphate powders without transferring them into solutions is advisable. Different conditions of sample preparation and synthesis of the reference materials determine the different chemical forms of the elements to be determined. This, in turn, affects the kinetics of their evaporation in the electrode crate and excitation processes in the plasma. The known mechanisms of those processes cannot always be transferred to specific conditions of the given method of analysis thus entailing the necessity of studying the effect of the samples chemical composition on the results of determination, proper choice of spectroscopic carriers, detailed study of spectra excitation processes in spectral analysis, and analysis of the physical parameters of the electric arc plasma. We used the lines Zn I 307.206 nm and Zn I 307.589 nm to measure the effective temperature of the central hot sections of the arc in a range of4500 - 6500 K. NaCl, BaCl2 and NaCl + T1C1 were studied to reduce the effect of the sample elemental composition on excitation conditions of the spectra and their stabilization as a spectroscopic carrier. In control experiments we used carrier-free samples. The coincidence of the values of the plasma physical parameters within the measurement error not exceeding 20%, as well as the identity of the nature of the kinetic curves for samples of phosphate precipitates and synthetic reference materials prove their correctness. The result of the study substantiate correctness of the direct atomic-emission spectral procedure in analysis of phosphate concentrates of fission when using synthetic reference materials.

Recent Advances in Electric Arc Plasma Generation Technology

ARS Journal ◽  
1961 ◽  
Vol 31 (1) ◽  
pp. 4-17 ◽  
Author(s):  
RICHARD R. JOHN ◽  
WILLIAM L. BADE
Keyword(s):  
Electric Arc ◽  
Arc Plasma ◽  
Plasma Generation ◽  
Recent Advances ◽  
Generation Technology

To the Question of Studying the Regimes of Electro-Plasma Processing of Technogenic Wastes of Incineration Plants of the PRC for the Production of Melt and Fibrous Materials

2019 ◽  
Vol 945 ◽  
pp. 1001-1008
Author(s):  
S.L. Buyantuev ◽  
A.S. Kondratenko ◽  
S.A. Blagochinnov
Keyword(s):  
Specific Energy Consumption ◽  
Waste Incineration ◽  
Electric Arc ◽  
Gas Content ◽  
Arc Plasma ◽  
Fibrous Materials ◽  
Insulating Materials ◽  
X Ray ◽  
Ash Melting ◽  
Technogenic Wastes

The article presents the results of melting industrial waste incineration plants in China in electric arc plasma and demonstrated the possibility of melting the wastes in podrihtovali for production of a melt and producing fibrous materials based on it.Studies were carried out by optical and electron microscopy, spectral and x-ray analysis, as well as by capillary electrophoresis to determine the cation-anion composition. For processing of ash the electromagnetic technological reactor in which its melting was made was used. The presented melting unit made it possible to smoothly regulate the temperature and keep it at the outlet of the jet from the Letka, which made it possible to reduce the power consumption for the production of melt and fiber production. The experiments on melting showed a high gas content in the process of melting of the waste. Therefore, initially, to study the possible composition of the gas, the TERRA program modeling the process of ash melting with the release of gas was used, and the reactor parameters were calculated to determine the effective power and specific energy consumption. Thus, the purpose of the tasks was to obtain a homogeneous melt with associated purification of waste gases, followed by an analysis of its material composition, as well as the production of a thin mineral fiber to produce heat-insulating materials of the fibrous structure.

Chemical preparation of ultra-fine aluminium oxide by electric arc plasma

1981 ◽  
Vol 16 (6) ◽  
pp. 1716-1719 ◽  
Author(s):  
G. P. Vissokov ◽  
K. D. Manolova ◽  
L. B. Brakalov
Keyword(s):  
Aluminium Oxide ◽  
Electric Arc ◽  
Arc Plasma ◽  
Chemical Preparation
Sign in / Sign up

Export Citation Format

Share Document