doi: 10.52899/24141437_2026_03_381
UDK: 623.827

Development of Operating Algorithms for the Preliminary Purification Unit of Conversion Gas

Алексин Е. Н., Балакин А. В., Дядик А. Н., Маловик Д. С., Левицкий А. Л., Худяков С. С.
Article language: русский
Citation Link: Aleksin EN, Balakin AV, Dyadik AN, Malovik DS, Levitsky AL, Khudyakov SS. Development of Operating Algorithms for the Preliminary Purification Unit of Conversion Gas. Transactions of the Saint Petersburg State Marine Technical University. 2026;5(3):381–387. DOI: 10.52899/24141437_2026_03_381 EDN: IE

Annotation

BACKGROUND: The paper presents the results of developing a control algorithm for the preliminary purification unit of conversion gas from carbon dioxide. AIM: To analyze mathematical modeling of the absorber operation and create a software module of the absorber mathematical model that makes it possible to study the dynamic characteristics of the object. METHODS: To develop the algorithm, mathematical modeling was used, assuming that the gas parameters obey the Clapeyron– Mendeleev equation. RESULTS: A control algorithm for the preliminary purification unit of conversion gas from carbon dioxide has been developed, which involves the use of discrete level switches and a classical proportional-integral-derivative controller. The calculated feedback signal is sent to a comparison block for the setpoint and actual level signals, where an error signal is generated. Subsequently, the proportional-integral-derivative controller produces a control action aimed at lowering or raising the seawater level in the apparatus. Within the accepted assumptions, it is assumed that water is fed into the preliminary purification unit by a constant-capacity pump, and this pump is not part of the automatic control system loop. Options for automatic control of external water supply are not considered in the current study. The control of water drain from the absorber is performed by the level controller, which ensures stabilization of the process parameter and maintenance of the material balance in the apparatus. CONCLUSION: The developed functional diagram of the automatic level controller operation is based on the use of a functional block that analyzes incoming information on the current state of the level in the absorber. The regulation of physical processes in the absorber is carried out by a functional block that analyzes the incoming information on the water level in the absorber during the operation of the algorithm. The proposed solution provides a basis for further optimization of the conversion gas treatment process. Keywords: mathematical modeling; control algorithm; preliminary purification unit; absorber; proportional-integral-derivative controller; level; feedback; functional block; carbon dioxide; seawater; valve; pump

Bibliography

1. Dyadik AN, Zamukov VV, Dyadik VA. Shipboard air-independent
power plants. Saint Petersburg: Sudostroenie; 2006. 424 p. (In Russ.)
EDN: QNUCWL
2. Koul AL, Rizenfeld FS. Gas purification. Moscow: Gostoptekhizdat; 1962.
396 p. (In Russ.)
3. Berdennikov AA, Bogdanov DS. Adjustment of water level in
water cleaning absorbers of the gas. Shipbuilding. 2015;(1):54–56.
EDN: UJKZJV
4. Vukalovich MP, Kirillin VA, Remizov SA. Thermodynamic properties
of gases. Moscow: Mashgiz; 1963. 376 p. (In Russ.)
5. Kalinushkin MP. Fan units. Moscow: Vysshaya Shkola; 1979. 223 p.
(In Russ.)
6. Lapidus AL, Golubeva IA, Zhagfarov FG. Gas chemistry. Processing
of hydrocarbon gases. Moscow: Gubkin Russian State University of Oil and
Gas (NRU); 2019. 344 p. (In Russ.)
7. Zemenkov YuD, Podorozhnikov SYu, Shadrin AA. Operation and
automation of integrated gas treatment plants. Tyumen: Industrial University
of Tyumen; 2018. 176 p. (In Russ.)
8. Akhmetov SA, Ishmiyarov MH, Verevkin AP. Modeling of technological
processes of oil refining and petrochemistry. Ufa: Ufa State Petroleum
Technological University 2020. 312 p. (In Russ.)
9. Belyaev AN, Shaposhnikov AI. Automatic control of technological
processes of oil and gas processing. Voronezh: Voronezh State Technical
University; 2020. 195 p. (In Russ.)
10. Afanasyev SV, Shevchenko YuN, Davydov AA. Absorption and adsorption
technologies for purification of hydrocarbon gases. Samara: SamSTU; 2018.
260 p. (In Russ.)
11. Arutyunov VS, Savchenko VI, Sedov IV. New gas chemical processes:
from purification to synthesis. Moscow: Institute of Chemical Physics
of the Russian Academy of Sciences; 2020. 280 p. (In Russ.)