The article presents a study of the coefficients of heat transfer of the built-in heat exchanger (deflegmator) of the distillation column used in technological lines of chemical processing of wood biomass. Mathematical modeling was carried out on the effect of changes in one of the technological parameters (diameter of the heat exchanger tubes, material of the heat exchanger and coolant) of the heat exchanger on the heat transfer coefficient. Rectification is widely used in the following industries: in the technologies of complex wood processing; in the forestry industry in the production of consumer products; in the recovery of extraction solutions in the extraction of biologically active substances from plant raw materials; in the technology of chemical processing of wood in the production of ethanol; when processing increasing natural waste by gasification and using synthesis gas to produce a biopolymer at the stage of solvent regeneration (methylene chloride, sodium hypochlorite, hexane, etc.), where highly efficient and productive distillation columns are also in demand. For the most part, multicomponent mixtures are subject to rectification, as a rule, azeotropic, having a similar boiling point, which explains the use of multi-stage rectification columns for their separation. At the same time, various methods of rectification are used, such as azeotropic, extractive, molecular, fractional, partial.

Topics
Gasification, Biomass energy sources, Heat transfer, Engineering thermodynamics, Mathematical modeling, Chemical processes, Biopolymers, Industry
1.
A. G.
Kasatkin
,
Basic processes and apparatus of chemical technologies
(“
Chemistry”
,
Moscow
,
1973
), p.
750
.
Google Scholar
 
2.
I. V.
Domansky
,
Machines and apparatus for chemical production: Examples and tasks
(
Mechanical Engineering, Leningrad. department
,
Leningrad
,
1982
), p.
384
.
Google Scholar
 
3.
E. O.
Materikina
,
Mathematical modeling of the operation of a built-in heat exchanger depending on the geometric design
,
Energy in the modern world
,
131
–
136
(
2019
).
Google Scholar
 
4.
A. V.
Snegireva
,
Mathematical modeling of the operation of a built-in heat exchanger with different materials
,
Energy in the modern world
,
136
–
140
(
2019
).
Google Scholar
 
5.
A. V.
Kustov
,
Hydrodynamics and mass transfer in vortex distillation stages during the processing of plant raw materials: dis. …cand. tech. Sciences ; 05.21.03
(
SibSTU
,
Krasnoyarsk
,
2010
).
6.
M. M.
Bayandina
 and
A. V.
Kustov
,
Study of the heat transfer coefficient of the built-in heat exchanger of a distillation column, Science and youth: problems, searches, solutions
,
188
–
193
(
2023
).
Google Scholar
 
7.
A. V.
Snegireva
,
Influence on the heat transfer coefficients of the material of the built-in dephlegmator Innovatika-2020
,
57
–
60
(
2020
).
Google Scholar
 
8.
E. O.
Materikina
,
The influence of the diameter of the tubes of the built-in dephlegmator on the heat transfer coefficients
,
Innovatika-2020
,
53
–
56
(
2020
).
Google Scholar
 
9.
M. M.
Bayandina
,
Determination of heat transfer coefficients for the built-in reflux condenser of a distillation column
,
Current problems of aviation and astronautics
,
271
–
273
(
2023
).
Google Scholar
 
10.
A. V.
Kustov
,
Mathematical modeling of the operation of the built-in reflux condenser Reshetnev readings
,
176
–
177
(
2020
).
Google Scholar
 
11.
N. A.
Voinov
,
Study of a built-in dephlegmator in a packed column
.
Chemical industry today
,
3
,
52
–
56
(
2010
).
Google Scholar
 
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