MODELING OF EFFECTIVE ENVIRONMENT NEUTRALIZATION SYSTEMS OF HARMFUL GASES BY METAL-OXIDE CATALESTS OF PHOTOCHEMICAL DECOMPOSITION

摘要

Fast development of the world industry creates the problems connected with protection of the population from consequences of accidents, periodically happening on chemical plants, in the gas and oil-extracting industry, on transport, etc. In addition to man-caused accidents it is necessary to remember threat of the terrorist attacks concerned with application of poison gases. Timely response in such extreme situations can be executed on the basis of the equipment capable to fast operational readiness and high efficiency when for a poisonous cloud it is necessary-enough highly active catalytic particles can be disseminated in the given area in at any moment. Well-known, that TiO_2 nanoparticles in crystal updating anatase show excellent photocatalytic properties guaranteeing ability to destruction of various harmful substances. In the present paper results of the mathematical modeling of a cloud the nanosizes catalyst particles formation and evolution process are presented at their formation by three technical systems: (1) as a operation result of solid propellant gas generator with charges specially picked up pyrotechnic titan substance mixtures in which combustion products contains the high percent of particles TiO_2 of metastable crystal updating; (2) at explosion of special explosives on the basis of urea's nitro-compounds and metal salts; (3) at dispersion of the ready catalyst by explosive way and/or cocurrent jet of gasgenerator combustion products.