ISSN 0010-5082, Combustion, Explosion, and Shock Waves, 2018, Vol. 54, No. 3, pp. 337–344.
Pleiades Publishing, Ltd., 2018.
Original Russian Text
A.F. Ryzhkov, N.A. Abaimov, I.G. Donskoi, D.A. Svishchev.
Modernization of Air-Blown
Entrained-Flow Gasiﬁer of Integrated
Gasiﬁcation Combined Cycle Plant
A. F. Ryzhkov
I. G. Donskoi
, and D. A. Svishchev
Published in Fizika Goreniya i Vzryva, Vol. 54, No. 3, pp. 96–103, May–June, 2018.
Original article submitted September 28, 2017; revision submitted December 5, 2017.
Abstract: The high eﬃciency of a combined cycle and the availability of systems for deep puriﬁca-
tion of syngas before combustion allow for the study of combined-cycle gas turbines as a promising
solution to increase the eﬃciency and environmental friendliness of coal power engineering. The
key element of the device is a gasiﬁer. A Mitsubishi Heavy Industries gasiﬁer is selected as an
initial design for modernization, which consists in heating the blast air up to 900
C and supply-
ing vapor with a temperature of 900
C. The impact of modernizing the gasiﬁer characteristics is
determined by using zero-, one-, and three-dimensional models. The modernization of the gasiﬁer
allows increasing the thermal power by the syngas and cold gas eﬃciency from 77.2 to 84.9% and
increasing the ratio H
/CO from 0.34 to 0.6.
Keywords: gasiﬁcation, coal, integrated gasiﬁcation combined cycle, CFD, modeling, thermo-
An integrated gasiﬁcation combined cycle (IGCC)
is a promising solution to the problem of increasing
eﬃciency and environmental friendliness of coal en-
ergy [1, 2]. Its key element is a solid fuel gasiﬁer. By
gasifying agents, gasiﬁers are divided into oxygen-blown
and air-blown gasiﬁers. The advantage of the former is
the high cold gas eﬃciency, which is the conversion of
chemical energy of fuel into the chemical energy of syn-
gas. The advantage of the latter includes low capital
and operational costs . This paper describes the im-
provement of an air-blown gasiﬁer.
The only commercial air-blown gasiﬁer is a Mit-
subishi Heavy Industries (MHI) two-stage entrained-
ﬂow device with a capacity of 1700 tons/day . The
Eltsyn Ural Federal University, Ekaterinburg,
620002 Russia; email@example.com.
Melentiev Energy Systems Institute, Siberian Branch,
Russian Academy of Sciences, Irkutsk, 664033 Russia.
two-stage organization of the gasiﬁcation process allows
zoning its main stages (combustion and gasiﬁcation),
which increases the cold gas eﬃciency (CGE) and car-
bon conversion rate (CCR). Therefore, it is the MHI
gasiﬁer that is selected as an initial design for further
The purpose of modernization is to increase the
CGE and correct the ratio of H
/CO in the syngas to
improve the energy and environmental parameters of
combustion of syngas in the combustion chamber of an
IGCC for coal gasiﬁcation.
At this stage, modernization consists of two prin-
cipal engineering solutions:
(1) heating of the blast air;
(2) supply of vapor to the second stage.
Heating of the blast air as a method for increas-
ing the intensity of combustion and gasiﬁcation, which
is an alternative to an oxygen-enriching method, makes
it possible to reduce the disadvantages of the air-blown
process and increase the eﬃciency of the use of air and
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