SCIENTIFIC ABSTRACT ROZENGART, M. I. - ROZENGAUZ, D. V.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001445620011-7
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: July 13, 2001
• Sequence Number: 11
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

S/020/60/134/006/017/031
B016/BO67
AUTHORSs Kazanskiy,, B. _A.. Academician., Rozengarto No, I and
a~
Freybergq L. Ao
Effect of Potash and Phosphoric Acid Additions on the
Aromatizing AC4.:tVity of Chromium Oride
PERIODICAL3 Doklady Akademli nauk SSSR, 1960, Vol. 1349 No. 6~
PP- 1360-1362
TEXTs The aromatizing activity of the Al-.Cr catalyst.in the reactions
of dehydrocyclization.of-n-hei~ane"land the dehydrogenation of cyclo-
hexanJjis favored by the alkali ana alkaline-earth elements (Ref. 1).
The authors wanted to study the effectof addit-:ions on the catalytic
activity of.pure chromium oxide in the conversion reactions of hydro-,
carbons, since in the Al-Cr catalyst chromium is the effective agent.
The experiments which were conducted at 45001C and a volumerate.of 0.8 h
proved that an addition of 0.25 wt% or K 0 in the form of potash com-,
2
pletely inhibits the reactions of dehydrocyclization of n-heptane.
Card 1/3

Effe,,,'I of Potash and Phosphoric Acid S/020/60/134/006/017/031
Additions on the Aroma~tizing A;,-t:-Ivity of B016/BO67
Chromium Oxide
Furthermore, the formation of unsaturated compounds is reduced to 1/7,
and the cracking and isomerizing secondary effect of the catalyst is
almost completely eliminated. This addItion produced the same effect on
the dehydrogenation of cyclohexane to benzene. Howeverv toluene was
formed from an n-heptane 4- n-heptene-1-mixture if,potash was added to
the catalyst. The yield of toluene In this case was by, 60C14 1
lower than
that without addition of potash. The authors wanted to clarify whether
the inhibiting effect of potash is a speci-fic result of its alkalinme
nature. For this purpose they-.studied~"hs affect of additions of
0.14 wt%o of phosphoric acid on chromium oxidz. The effect was the same as
that of potash. Additions of both types also reduced the hydrogenating
effect of the catalyst. Thesp experiments show that the promoting effect
of potassium on the A-'!-Cr catalyst- is nol~ dus to ths interaction of the
alkaline addition with chrc!mium oxids. This effect has a more comDli~'.%ated
nature and appar-antly is the ~z-onsequenr,=- 3f the .-nt=raction of all. th:ree
components-a of chromium oxide, of aluminlim orideq and of the alkaline
addit.-L'on. One of the forms of this interaction was: described earlier
(Ref.12). The fact that the aromatization of heptane and cyclohexane
Card 2/3

Effect of Potash and Phosphoric Acid S102 6o/i54/006/017/031
Additions on the Aromatizing Activity OIL' B016%067
Chromium Oxide
ceases after the introduction of K?CO 3 or H3PO4 on pure chromium oxide,
whereas the aromatization of heptane continues, i~an be explained by the
fact that -the two additions influence the first stage of catalysis, i.e.9
activated adsorption. The authors assume that these additions prevent
the adsorption of the saturated hydrocarbons at the active centers of
,the Cr catalyst. The adsorption of the much more active olefin, molecules
s of-this ph,~n:)menon.,
is inhibited mu ch less. To explain the detail
further studies are necessary. The authors menti,).u papers b,-.r A. M. Rubin"
shteyn, N. A. Prilbytkova, and A. A. Slinkin (Ref. 2). Table 1 gives the
results of the above aromatization experiments. There are -1 table and
2 Soviet references.
ASSOCIATION3 Institut organicheskoy khimi-I Im. N. D. Zel�nskogo
Akademil nauk SSSR (Institute of Organic Chemistry imeni
N. D. Zelinskiy of the Academy of Sciences USSR)
SUBMITTEDa J,11Y 159 1960
Card 3/3

S102016011321021341067
B0111BOO2
AUTHORS: Rozengart, M. I., Slinkin, A. A., Rubinshteyn, A. M.
TITLE; structure and Catalytic Properties of Chromium-silica Gel
catalyatsk
PERIODICAL: Doklady Akademii nauk SSSR, ig6o, vol. 132, No. 2, PP. 367-370
TEXT: The authors found out that the chro'mium-silica gel catalyst first treated
with ethyl alcohol and then heated ir the air current, soon is poisoned during,
the aromatization (dehydrocyclization) of n-heptane by coke deposition. This:
catalyst had antiferromagnetic properties and its radiograph clearly showed
lines of Cr20~. The same catalyst but heated in the hydrogen current (instead
of air), remained unpoisoned during 2 hours of the experiment, and proved to be,
paramagnetical, and radiographically amorphous. Fig. 1 gives an adsorption
scheme of a paraffin hydrocarbon.on crystalline Cr203; A new molecular C-C
bond.develops besides,the aromatization. This causes. he development.of molecule.
chains and networks of the polymer on the surface.of the catalyst. They are trans-
formed into coke. The catalytic experiments were conducted according to.the
methods of Ref. 7. Fig. 2 shows the changes of the refractive index of the
Card 1/3

Structure and.Catalytic Properties of Chromium- S/020/60/132/92/34/06,7:
silica Gel Catalysts B011/3002
catalysates during the experiment,. Tabl.e.1 illustrates the aromatization of:,
n-heptaneland cyclohexane under atmospheric pressure. Hence it is clear that the
above-mentioned,differbnces in the behavior of catalysts,are not due to
admixtures of other metal oxides in silica gel. Table 2 gives data on the phase
composition and magnetic properties of the catalysts I-IX investigated by the
authors. Hence, these catalysts can be classified into two groups: 1) radio-
graphically amorphous, paramagnetic - samples II. and III. The temperature
dependence of their susceptibility follows the law of Curie-Weiss - This
allowed the calculation of the magnetic moment (3.2~L B). 2) Samples IV_IX are
,antiferromagnetic. k1l. their radiographic lines were identified as lines of
Cr203' Sample VIII produced from sampleI by heating in the hydrogen current
without alcohol treatment, thus contained crystalline Cr2031 like samples V.
and VI. Sample III however, which was produced by heating sampleJI in the H2
current, proved to be radiographically a morphous, and paramagnetic. The
authors assume that Cro in.the first case is immediately reduced into Cr2O 3Y
and by alcohol treatment in the second case develops some intermediate
compound of chromium not affected by air.. This intermediate compound however,
produces the crystalline Cr203 when heated in the air.current. This inter-
mediate compound possibly is a chromium silicate developing during the alcohol
Card 2/3

Structure and Catalytic Properties of Chromium- S1020V6011321021341067
silica Gel Catalysts B011/ .002
treatment of the catalyst. It may consist of non-stoichiometric chromium oxides,
developing during the re(ikicti~ar, Qf Q-_Q~."aj Vv% othq~r-
mineral acids,. There are 2 figures, 2 bles, and 7 references, 4 of which :are
Soviet.
,ASSOCIATION: Institut organicheskoy khimii im. W. D. Zelinskogo Akademii nauk
Acade Y of Sciences. USSR)
PHSENTED.- January 23, 196D, by B. A. Razanskiy, kcademician
SUBMITTED; Janua,r.Y 15, 1960
Card 3/3

5M SOV/20-126-4-27/62
AUTHORS: Kazanskiy, B. A.; Academician, Rozengert,
Kuznetsova, Z. F.
TITLE: The Effect of Some Admixtures of Alkali Elements on the
Properties of Aluminum-chromium Catalysts (Vliyaniye dobavok
shchelochnykh elementov na kataliticheskiye svoystva alyumo-.
khromovykh katalizatorov)
PERIODICAL: Doklady Akadomii nauk 83S11, 1959, Vol 126, Nr J, pp 787-790~
1
(USSR)
ABSTRACT: As is known, the admixture of small amounts of -potassium
and cesium to.the catalysts mentioned in the title, increases..
r
the output of final p oducts in the reaction of,.aromatizing
paraffin hydrocarbons,,(Ref 1). In publications,however, there
are no reliable statements on a similar effect of
other
,
alkaline elements. The present article is dedicated to.the
latter problem. A description follows of the effects of
equivalent amounts of Li, Na, K, Rb and Cs onthe activity
of two preparations A and B of the mentioned catalyst, in
0 ~
the reaction of dehydrogenation of n-heptane at 520 . Lithium
is ineffective for the increase of the output of aromatic
Card 1/3 products of heptane. The introduction of sodium however, raise's

SOV/20-126-4-27/62
The Effect of Some Admixtures of Alkali Elements on the Properties of
Aluminum-chromium Catalysts
3y 81/4. This promoting effect still
the output in both catalysts I
increased with potassium (13 and and reached its maximum
with rubidium (21 and 1,5%), for cesium it was 9 and 13~fo. The
same was observed in the dehydrogenation,of cyclohexane with
A and B. There is a great similarity between the effect men-
tioned above and that of the same admixtures to catalysts of
iron magnesium (Ref 3). If alkali elements are added to the
catalysts mentioned in the title, the output of the catalyst
increases, i.e. the cracking of hydrocarbons decreases,. This
,-ives reason to the opinion that.there are activecentres
in the catalyst concerned which catalyze reactions of crac.k-,.
ing and of the polymerization of unsaturated hydrocarbons. In
their course they develop carbonium ion, similar to.the clas-
sical case of the catalyst aluminum silicate. Such an ad-
mixture of alkali elements apparently reduces the "coke,"
sediment on the catalyst and thus increases..the stability,pf
the latter (Ref 4). It is to beexpected that the application
of alkali elements will reduce the temperature.o.f regeneration
in the catalyst. This would increasb the s tability of the
Card 2/3 latter, and extend the duration of their application. On the

3OV/20-126-4-27/62
The Effect of Some Admixtures of Alkali Elements on the Properties of
Aluminum-chromium Catalysts
other hand, the thermal stability of the catalyst is reduced
by alkali (Ref 4). The role of this one part of the effect
of alkali'cannot be explained sufficiently. There are 2 fig-
ures, 2 tables, and 6 references, 3 of which are Soviet.
ASSOCIATION: Institut organicheskoy khimii im. N. D. Zelinskogo Akademii
nauk SSSR
(Inatituteof Organic Chemistry imeni N. D. Zelinskiy of the
Academy of Sciences, USSR)

50) SOV/2o-126-3-31/69
AUTHORS: Kazanskiy, B. A., Academician, RoLen6art, W. I., Kuznetaova, Z. F.
TITLE: Destructive Alkylation of Benzene by Propane (Destruktivnoye al-.
kilirovaniye benzola propanom)
PERIODICLL: Doklady Akademii nauk SSSR, 1959, Vol 126, Nr 3,
PP 571 - 574 (USSR)
ABSTRACT: The reaction of paraffin hydrocarbons with aromatic hydrocarbons
,
-
can open new ways to the production of various aromatic sub-
stances, and contribute to clarify the nature of catalytic trans-
formations. But it belongs to the most poorly investigated
branches of hydrocarbon chemistry. Patents (Refs 1,2) show that_
benzene is alkylated by paraffin-hydrocarbons in the presence
of hydrogen fluoride, boron fluoride, as well.as t heir mixtures.
The patents state that only such paraffins are'.sluitable which
possess no less than 5.carbon atoms in the chain. On the basis
of.references 4-9, it was to be expected that toluene wouldi,~,,.
originate by the interaction of benzene with differentparaffin,
hydrocarbons under pressure and in the presence of nickel.cata-.
lysts. Preliminary experiments by the authors have.confirmed
this expectation, for it came true with normal paraffin hydro-,
carbons (heptane, hexane, butane, propane) at a much lower
Card 1/2 pressure (60 atmospheres overpressure) than indicated in' refer-

Destructive Alkylation of Benzene by Propane SOV/2o-126-3-31/69
ence 6. The said reaction of benzene with propane was closely
investigated by the authors on nicicel deposited on 3iliceous
earth. Table 1 shows the yields of "alkyl benzenes", table 2
the influence of temperature on this yield. Table 3 indicates
the influence of the duration of test on the activity of the
catalyst. Figures 1 and 2 show the fractionation curves o.f.th.e.
catalyzates. There are 2 figures, 3 tables, and 11 references,
2 of which are Soviet.
SSOCIATION: Institut organicheskoy'khimii im. N. D. Zelinsko.-O Akademii
A
nauk 55SR (Institute of Organic Chemistry imeni N. D. Zelinskiy.
of the Academy of Sciences'USSR)
SUBMITTED: March 11 , 1959
Card 2/2

8(2) SOV/32-25-4-54/71
AUTHORS: Buslayev, R. V~~ Lavrov., I. A., Lutsek, V. P., Rozengart, Y. I.
TITLE: Impulse Timing Relay for Rectifying Columns (Impul'snoye
rele vremeni dlya rektifikatsionnykh kolonok)
PERIODICAL: Zavodskaya Laboratoriya~ 1959, Vol 25, Nr 4,
PP 493 - 494 (USSR)
ABSTRACT: An impulse timing relay was designed for the purpose of auto-
mating the removal of distillates from laboratory rectifying:.
columns. Impulses may be altered over a wide range, from 40,
Lmpulses per minute to one impulse every three minutes, the
impulse duration ranging up to 38 seconds. The apparatus is,-,
fed with 127 v alternating current. It is 24 cm long,,,15,,cm,
wide, and 16 cm high. The relay is actuated through mechanical
switches operated by a reversible electric motor which perio-
en from~the
di--,'it~ ch-angas the sense of rotation. It. can be se
schematic -illustration of the rel4.s (Fig), and the descrip-
tion that the electric motor is of the.type RD-09, and that
an intermediate relay of the type RPT-100 is.used., ThereAs
Card 1/2 1 figure.

AUTHOR: Rozeng4rt, R. I razanskiy, B-19 A., 20-119-4-24/60
Member., Academy of Sciences, USSR
TITLE: Dehydrocyclization of'n-Hbptane on Aluminum-Chromium
Catalysts (Degidrotsiklizatsiya m-geptana na
.alyumokhromovykh,.katalizatorakh)
PERIODICAL: IToklady Akadbmif Nauk SSSR', 1958, Vole 119, ITr 4,
716-719 (USSR)
ABSTRACT: The short time of act-ion is one of the peculiarities
:of the catalysts in question in the aromatization of'
paraffinic hydrocarbons. They must be regenerated: after-
several hours since they are deactivated by coaly
deposits ("coke"). The authors'6xperimen-ts concernin6
the process.mentioned in the title showed that continuously
acting catalysts can be produced which remain active up
to 27 hours and have a yield of 67 percentage by weight
of aromatic compounds during this period. After,100
hours of action with periodic regenerations the duration

C-ard 1/3 of the working period of the catalysts was reduced'to
10 12 hours and did not change during the following

Dehydrocyclization of n-Hbptane om Aluminum-Chromium 20-119-4-24/6o
Catalysts
115 - 117 hours of action. After 215 - 217 hourr of action
the surface of the catalysts was reduced to one third,
the volume.of the pores 1 : 1-5. The total yield of the
reaction products and the toluene yield computed with
respect to the heptane which p9ssed through the catalyst
i-s not changed considerably. The experiments with catalysts
of different grain size confirmed this assumption. An
experimental part follows. From the obtained results
follows-,that the-grain size of the catalyst influences the
amount of the yield of aromatic compounds. The reaction
velocity is influenced by the diffusion of the components
of the reaction mixture. Hbnce follows that the heptane
aromatization takes place om a promoted aluminum-chromium
catalyst in the diffuaianLrange. The influence of the
grain size is a general phenomenon (references 8, 9)
for several reactions of saturated lirjdrocarbons at the
catalystsin question. This is apparently explained by
the fact that at comparatively high temperatures
Card 2/3 (450 5000) the reaction velocities become.equal or

Dehydrocyclization of n-Heptane on Aluminum-Chromium. 20-119-4-24/60
Catalysts
surpass the diffusion velocity of the hydrocarbons in the
catalyst. There are 1 figure, 2 tables,,, and 9 references,,
7 of which are Soviet.
ASSOCIATION- Iftstitut organicheskoy khimii im. N. D. Zelinskogo
Akademii nauk SSSR (Institute of Organic Chemistry imeni
N. D. Zelinskiy AS USSR)
SUBMITTED: December 269 1957
Card 3/3

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Preparation of highly purified liver esteritse. VARozen-,
AArl. C. A, Kibarifits. E. I Iteriiardelli. anti P., A~ Finognov.
j),.k4jjj
acetone J~Iwtfer (.5,41 g'), wlto4r activity %%" 0.7 (units (it
rclative activity jWr Ing, of protein). was obtained froin pig
liver placed in 400 ml. of 0,0213 N NH.Oll, incubated 0.5 hr.
at 35,7'. and filtered through cheesecloth. . This was re-
IWAted 2-3 times with fresh N11#01f. The combined cits,
1 :1 L, pit 7.5-8,0. activity 14, were acidified with 0.5 1~
AcOlf to pit 3.5-5.8. lot stand overnight at 3', and filtered.
rhe filtrate was neutralized to pit 7 by Nlls()H followed by
:91 9. (N'114W. per I(*) ml, soln. anit let stand ovemight.
The ppt. was diwarded. and the filtrate. activity 30,'w25
treated with 7.5 g per too nil. and let stand
twerstight to give a crunitily ppt. of protein that contain% the
bulk of the enzymr, The ppt. W43 C.Itd. rrpratrdly with
45%(Nll.)-.SC). at 1.117.0-7.3. the lantextit. being runover-
night near U'. The residua I ppt. was taken up in 10-12 ml.
of cold 11:0 (activity 00)a nil dialyzed against cold I fj0 for 48
hrs. The resulting plit., filtered off. yieldsa yellowish soln.
o('the enzyme with activity 210-9-10. The,product was
tested by elect roplusr";,; . which showed the presence of,:.'
components.,one 6-ing present in %mail amt. and nhowing
treater mobility. Sample,; taken from electroplioresisexpt.
-at varion4 IfIratkin,, showed that the more mobile comp-
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0, Xf, Koolal-IT

as 'I
phos ~h-t
.:reference

ROZRNGART. V.I.; MASIOVA, M.N.
Rate of incorporation of labeled melthioniae in, rabbit. tissue in
convulsions induced by 6etrazole and electric. current [With summary-
in Inglish]. Diokhtmi is 22 no.'6:947-953 N-D 157- MIRk 11:2)
1. leboratoriya, blok-himii Vses.oyuzno_po nauchno-iss ladova tell skogo
sanitarno-khimicheakogo institute Akad,emii meditsinskikh nauk SSSR,
leningrad.
(CONWISIONS, experimental,
off. on methionine incorporation in various organs in
rabbits. labeled prop. (Rua))
(MWHION1114B,. 'metabolism,
incorporation in various organs in exper. convalsioni in
rabbits, labeled prep. (Rua))

fifiaigmimi6"

SUB CoDE.-. o6, 07/ SUBM DATE -.,,lID666k/-`-.SOV REF:,..% 03 ,,OTH,REF: 012
Card 2/2

ACC NR: AR6033651 SOURCE CODE: UR/0417/66/000/009/0024/0024
AUTHOR: Rozengart, V. 1.
TITLC: Biochemical aspects in the classification of anticholinesterase
substances
SOURCE: Ref. zh. Farmalcologiya, khimloterapevtichoskiye aredstva,
tolsikologlya, Abs. 9.54.149
REF'SOURCE: Tr. Leningr. pediatr. med. in-ta, vyp. 32, 1965, 140-151
TOPIC TAGS: anticholinesterase, biochemistry, neurophysiology, enzyme
ABSTRACT:
Anticholinesteraaes were classed as "reversible" or "irre
versible" cholinesterase inhibitors on the basis of their.
-.biochemical mechanisma. Group I compounds form covalent
'bonda between the acyl group of the inhibitor and the nu-1-
cleophilic group of the covalent center Corganophosphorual
compounds, carbanates) while the nitrogen atoms of group
Il coupounds react with the anionic centiars of the sub-
strata (quaternary ammonium compounds). [LP)
SUB CODE: 06 /WA-50; CBE V0- Q4
Card UDCs .615.785.4

Prote,

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TIONS
A
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nauk'SWR~ 0_0

Ye.j.; KttatClj~7-.
-ademik;
".P.; GOVOVIKOV, U.N.; GODYNA$ ak
~P,"L'SON, M. Ya. R07ENGART Ye.V. YA KOM1:V , V.
Anticholinesterase properties of o-uthyl-S-alk-l
~ y1methyl-thiophospKi-
Plates. Inhibition kinetics and structure ol' the active surface of
cholinesterases. Dokl. All SSSR 158 no-4:880-883 0- f64-
1. Institut evolyutsionnoy fiziologii im. 1.1-1. Sechenova AN S.")EIR
'i lrstitut eleme-ntoorganicheskikh soyedineniy All SSSR.

'.ROZENGART, Ye.V..; GODYNA, Ye.I.,.GODOVIKOIT., N.N..

bss~: (I~itit~A6 of E~6i
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1-80)
AUTHORS; ja3~~~~Tayts, N. Yu., SOV/163-59-1-17/50
Sorokin, A. A., Poletayev, B. L.
TITLE: Investigation of the Performance.of a Slit Radiation Regenerator
(Issied6vaniye raboty shchelevogo radiatsionnogo rekuperatora),
PERIODICAL: Nauchnyye doklady vysshey shkoly. Metallurgiya, 1959, Nr 1,
pp 80-84 (USSR)
ABSTRACT,. At present.slit radiation regenerators are used to, a large
extent. They.'are composed of two cylinders. The combustion
gases pass through the inside cylinder, the air streams
,through the annular duct between the cylinders. The
Dnepropetrovskiy metallurgicheskiy institut .(Dnepropetrovsk
Institute of Metallurgy) in collaboration with the
metallurgicheskiy zavod im. Dzerzhinskogo (Uetallurgical Plant.,
imeni Dzerzhinskiy) designed a slit radiation regenerator.for
soaking pits. This type of regenerator differs from others
described in publications by the feature of being provided
with a bilateral heating of the walls. This is accomplished
by a'flue gas duct in the inside tube of the regenerator and
between the outside tube and the re-eneration chamber. The
Card 1/3 theoretical investigation (Ref 1) showed that by this method

Investigation of the Performance of a Slit Radiation SOV/163-59-1-17/50
Regenerator
of heating the efficiency 6f the regenerator is considerably
increased. A test unit vas erected in the above-mentioned.
works for the purpose of studying the regenerator in question.
It was composed of a furnace with two interconnected chambers,
a combustion chamber, and a regeneration chamber. The air
supply of the test unit was provided by two VVD-G high-pressure
fans with 20 kw electric motors. The slit radiation regenerator
2
with a heating surface of 21.6 m , intended for use with
soaking pits and with a rated capa city.of 250o m3/hour of air
heated to a temperature of up to 700 0 was constructed of
5.5 mm B1417 steel sheet. The investigations were carried out
at different temperatures of the flue gases enterin, the
0
regenerator (varying between 800 and 1300,) with unilateral
and bilateral heating and an uniflow direction of the flue
gases and of the air. A counterflow arrangement of air and the..
flue gases at gas temperatures of 800, 900, and 1000 0 with
bilateral heating was also investigated. V. A. Epshteyn,
Engineer, and I. I. Kharybin assisted in the experiments.-It
was found that the regenerator tested operates with a high
Card 2/3 thermal efficiency within a wide range of gas temperature.

Investigation of the Performance of a Slit Radiation SOV/163-59-1-17/50
Regenerator
The investigations substantiated the conclusions drawn from
theoretical considerations concerning the high efficiency of
such a regenerator with bilateral heating. The engineering
data obtained for a wide range of flue gas temperature (f rom
800 to 13000) indicate the-advantages of using such regene Irators
in this range of flue gas temperatures. The experiments at:
the test stand are at present continued. The problem of the
optimum flue gas distribution between the inside and the
outside duct is investigated. The Dnepropetrovbk Institute
of Metallurgy and the Stallproyekt are at present en-aged in
developing a multi-tube type of radiation regenerat ors. There
are 5 figures, 1 table, and 2 Soviet references.
ASSOCIATION: Dnepropetrovskiy metallurgicheskiy institut (Dnepropetrovsk
Institute of Metallurgy)
SUBMITTED: June 27, 1958
Card 3/3

LICIaINAMV,ju.I., dotsent, kand.tekhn.nauk; TAYTS, N.Yu., p',-if., dokto~ tbkhn.
nauk; EPSHTEYN, V.A., .1 zh.- LITOVCHEIUO, Yu.K., i.nzh.,- KHUDIK, V.T.,
j n k
inzh.; MININZON.7 R.D., inzh.
Study o If noloxidizing hpating of alloy step-1s. Stall 25 n'o.5:469--
473 My 165, (MIRA 113:6)
1. Diiepropptrovskiy metallurgicheskiy institut i zavod
Dnepro spptss tal

ROZENGART. a I., kandjekhn.nauk, dotsent; TAITS, N.Tu., doktor tekhn.nauk.,
Prof.; SPIVAY,,-E.I.: inzh.; SOROKIN A.A., inzh..: POLETAYEV B.L.,
kand.tekhn.nauk; KLIMENKO, G.P., i4-,; KOROTATE'VJ, M.H., inzh.;
STRUCHMEVSKIYP B.B.Y inzh.
Investigating the performance of holding furnaces for nonoxidizing
heating. Stall 23 no.9:848-853 S 163. (MMA 16 t 10)
1. Dnepropetrovskiy metallurgiches7xiy institut, TSentroenergochermetl.
zavod im. Dzerzhinskogo i Gosudarstvennyy soyuznyy institut p*o,,
proyektirovaniyu agregatov staleliteynogo i prokatnogo proizvodstva
dlya chernoy metallargii.

AUTHORS: Tayts, N. Yu. Doctor of Technical Science, 133-58-5-30/31~
Rozengart Yu I Candidate of Technical- Science,
orokin, A. A., ineer, and Poletayev,
B. L., Candidate
of Technical Science
TITLE: High Temperature Preheating of Air in Radiation
Recuperators ( VI T -_-okotemperalux odogrev vozdu~lia
1; G ~P~y P
v radiaLsionixykh rehuperatorakh)
PERIODICAL: Stall, 1958, Nr 57 pp 4/2-11-,-79 (USSR)
ABSTRACT: The object of the paper is to olive a theoretical analysis
of heat ezchange conditions in radiation - n'
recuperators i
order to develop a method for their design calculations
and the choice of optimal schemes of radiation
recuperators for soaking pits. Theoretical equations.
forU
'he determination of heat exchange in recuperators
are given. On the basis of the equations foLLr different
schemes of radiation recuperators are compared:
1 direct current recuperator i,.rith heating from two sides;
2 counter-current recuperator with heating from t-uo sides;
3 direct current recu-Derator with heating on one side and
4 counter-current recuperator whituh hea-tin6 on one side.
Card 1/2 It is concluded that for soaking pitus the first scheme

133-58-5-30/31
High Temperature Preheating of Air in Radiation Racuperators
is the most advantageous. An experimental recuperator
(Fig-7) was designed and its operation investigated.
The results of one heati=-5 vrith cold charge 8-re shovin
in Fig 8. The preheating of air reached 6~O C and the
coefficient of heat transfer 45 K cal/m hi. C.
The resistance of the whole air duct at 2r-00 m3/hr was
about 450 mm H 0 Some deficiencies in the operation
7ere noted: 'UN.aestruction of welded joints and
non-uniform heatin- of the surface of the tiibes due to a
non-uniform distribution of air. A second recuperator.
is beinG designed in which the above deficiencies will be
~removed.
There are 2 tables and 0 figures.
ASSOCIATIONS: Dnepropetrovskiy metallurgicheskiy institut
(Dnepropetrovsk Lletallurgical Institute),
Zavod im. Dzerzhinskogc (Plant imeni Dzerzhinsey)
Card 2/2

S/709/60/025/001/002/006
D040/Di-13
Rozengqrt,. Yu.I., Docent
TITLE: Uonox-,dizing metal heating in holding furnaces
SOURCE: !"--:iuciiro-te!