REFRACTORIES IN HEAT UNITS
RAISING THE EFFICIENCY OF HEAT-POWER UNITS DUE TO THE USE
OF MODERN REFRACTORY AND HEAT-INSULATING MATERIALS
I. E. Grishin,
A. S. Gorshkov,
and B. P. Gubin
Translated from Novye Ogneupory,No.12,pp.6–9,December, 2007.
Original article submitted September 19, 2007.
The timeliness and efficiency of the use of new refractory materials in modern heat-power units and the posi
tive experience in the use of fiber refractory articles in heat-treatment furnaces and steam-generating units are
considered. Novel design solutions for linings of heating furnaces operating at a temperature exceeding
1000°C are presented.
Saving of heat-power resources has been a priority task
in all stages of development of society and remains urgent in
our days. Heat-power units operating in virtually any branch
of industry are large consumers of power resources. The in-
troduction of new technologies connected with rising of the
temperature and complication of the operating conditions,
stricter constraints imposed on labor conditions and ecology,
and introduction of advanced systems for controlling the
thermal processes requires continuous improvement of the
design of heat units and use of modern efficient and reliable
materials for linings and setting. This direction is important
for any branch of industry that employs furnaces, boilers,
heat generators, and numerous other heating units, which
makes consideration of all aspects of the topic in one paper
impossible. We will consider the experience of the
“Soyuzteplostroy-Peterburg” Company in construction and
repair of furnaces for heat treatment of metals and of water-
heating and steam boilers at boiler houses and cogeneration
The main criteria to be met by linings and settings of any
heating unit is its endurance, high capacity for heat insula
tion, simplicity of design, and convenience of assembly and
reconditioning. When all these criteria are met, the economic
effect is considerable. The absence of deep and long-term en
gineering and economic analysis with allowance for the effi
ciency of heating units in a long service period can lead to er
roneous decisions on the possibility of use of less expensive
traditional materials that ensure immediate savings in the pe
riod of construction instead of deciding in favor of more ex-
pensive advanced quality materials.
Many-years experience shows that replacement of piece
refractories and traditional insulating materials by modern cer-
tificated refractory concretes, refractory articles based on alu-
minosilicate fibers, and advanced insulating articles gives a
noticeable economic effect despite the initial growth in the
cost of the work.
Industrial introduction of refractory concretes began in
the 1950 – 1960s, but they were not produced at commercial
scale. The quality of the then concretes was not high and they
failed when used, for example, in tunnel brick kilns. At the
same time imported refractory concretes were used on a large
scale. Quality refractory concretes of domestic production
appeared in the market only in the 1990s, but they were often
produced with the use of imported components, especially
Fiber refractory materials have been used successfully
since the 1970s.
HEAT-TREATMENT AND HEATING FURNACES
Starting in 1977 fiber refractory articles began to be used
in gas-fired heat-treatment furnaces and electric furnaces of
the “Izhora Plant” within the joint venture of the Leningrad
Department of “Soyuzteplostroy” and VNIPI “Teploproekt.”
In order to test the properties of the new materials and
the efficiency of the new design solutions the roof of a
heat-treatment bogie furnace was lined with them in 1977.
The roof had a size of 6 ´ 13 m. The lining was designed for
Refractories and Industrial Ceramics Vol. 48, No. 6, 2007
1083-4877/07/4806-0391 © 2007 Springer Science+Business Media, Inc.
“Soyuzteplostroy-Peterburg” Company, St. Petersburg, Russia.