Russian Journal of Applied Chemistry, 2009, Vol. 82, No. 9, pp. 1721−1728.
Pleiades Publishing, Ltd., 2009.
Original Russian Text
F.A. Baibikov, G.A. Vlasov, A.L. Kozen, G.I. Buravtseva, M.E. Balduev, 2009, published in Khimicheskaya Promyshlennost’, 2009,
Vol. 86, No. 4, pp. 189−200.
TECHNOLOGY OF ORGANIC
AND INORGANIC CHEMISTRY
Deep Catalytic Treatment of Waste Gas from Sulfur Dioxide,
Nitrogen Oxides and Carbon Monoxide at Processing Products
of Detoxication of Toxic Substances
F. A. Baibikov, G. A. Vlasov, A. L. Kozen, G. I. Buravtseva, and M. E. Balduev
Russian Scientiﬁ c Center “Applied Chemistry,” St. Petersburg, Russia
Received April 18, 2009
Abstract—The Russian Federation in January 1993 signed the Parisian “Convention about the prohibition of
development, production, accumulation and application of chemical weaponry and about its destruction.” In
1996 Federal target program “The destruction of the reserves of chemical weaponry in the Russian Federation”
that has status of presidential was approuved for purposes of the realization of the Convention. The convention
came into force on April 29, 1997.
The Perm branch of Russian Sci. Center “Applied
Chemistry” was practically immediately involved into the
works on chemical disarmament. In particular, a work on
the destruction of the chemical weaponry of 2nd class,
phosgene, was carried out on the mobile plant developed
according to technology that was suggested by Perm
branch, in 20012002. Phosgene was recalibrated from
3844 artillery ammunition into the 40-liter balloons and
utilized in the experimental production of the Permian
branch of Russian Sci. Center “Applied Chemistry.”
In the context of State Contract since 2003 in
the Permian branch were carried out studies on the
development of the alternative technology of the processing
the products of the detoxication of the organophosphorus
toxic substances (POS]), reaction masses (RM), by a
technique of low-temperature oxidation by calcium
nitrate. The technology that consisted in the oxidation of
RM at 300450°C by calcium nitrate in a reactor with the
aerated bed was suggested [1, 2].
A solid slime and a waste gas containing SO
, CO are the main products of processing
RM. The solid slime from the processing RM-sarin or
RM-soman according to the data of X-ray diffraction
analysis is the analog of natural mineral francolite
(carbonatehydroxyﬂ uoroapatit]) of the general formula
(ОН)F, ﬂ uoride, nitrate and calcium oxide
present as the admixtures. The content of francolite in
the slime reaches 80%. During processing RM-Vx the
slime contains mainly calcium sulﬁ te and calcium sulfate,
calcium nitrate and calcium oxide.
The neutralization of the waste gas is attained ﬁ rstly
by a wet alkaline cleaning in a nozzle scrubber then by the
ﬁ nal treatment of gases in two bulk ﬁ lters [2, 3]. The ﬁ rst
ﬁ lter (on the motion of gas) is equipped with chemisorbent
MDS, and the second ﬁ lter is ﬁ lled with activated carbon
of grade SKT-6 impregnated with urea.
The nozzle scrubber is sprinkled by 6–9% NaOH
solution and intended for the recovery of a basic amount
from the gas. An efﬁ ciency of the treatment is 95%.
The deep treatment of the gas from SO
is conducted with
the aid of the bulk ﬁ lter equipped with the chemisorbent
MDC, and from NOX, with the aid of a ﬁ lter with the
activated carbon SCT-6.
Drawbacks in this scheme of puriﬁ cation are:
– the necessity of the presence of a unit for recovery
of the spent scrubber liquid produced in the course of
regeneration of a hard realized dump of calcium sulﬁ te.
– the necessity of conducting the operations of the
regeneration of worked out chemisorbents MDS and
coal SKT-6 directly in the ﬁ lters themselves that requires
additional apparatuses in the plant of the gas puriﬁ cation.