chemicallytechFine Chemical TechnologiesТонкие химические технологии2410-65932686-7575MIREA – Russian Technological University (RTU MIREA).10.32362/2410-6593-2017-12-3-33-43chemicallytech-91Research ArticleTHEORETICAL BASIS OF CHEMICAL TECHNOLOGYТЕОРЕТИЧЕСКИЕ ОСНОВЫ ХИМИЧЕСКОЙ ТЕХНОЛОГИИENERGy EFFICIENCy OF THE COMPLEX COLUMN FOR THE SEPARATION OF VAPOR CRACkING PRODUCTS UNDER THE DEPENDING ON FEED COMPOSITIONЭНЕРГЕТИЧЕСКАЯ ЭФФЕКТИВНОСТЬ СЛОЖНОЙ КОЛОННЫ ПРИ РАЗДЕЛЕНИИ ПРОДУКТОВ ПИРОЛИЗА В ЗАВИСИМОСТИ ОТ СОСТАВА ПИТАНИЯКочарянС. О.KocharyanS. O.

аспирант кафедры химии и технологии основного органического синтеза

119571, Россия, Москва, пр-т Вернадского, д. 86

Moscow 119571, Russia

kocharyanso@mitht.ruРудаковД. Г.RudakovD. G.

кандидат технических наук, ассистент кафедры химии и технологии основного органического синтеза

119571, Россия, Москва, пр-т Вернадского, д. 86

Moscow 119571, Russia

noemail@neicon.ruТимошенкоА. В.TimoshenkoA. V.

доктор технических наук, профессор кафедры химии и технологии основного органического синтеза

119571, Россия, Москва, пр-т Вернадского, д. 86

Moscow 119571, Russia

noemail@neicon.ruМосковский технологический университет (Институт тонких химических технологий)РоссияMoscow Technological University (Institute of Fine Chemical Technologies)Russian Federation2017280620171233343Copyright © Kocharyan S.O., Rudakov D.G., Timoshenko A.V., 20172017Кочарян С.О., Рудаков Д.Г., Тимошенко А.В.Kocharyan S.O., Rudakov D.G., Timoshenko A.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.finechem-mirea.ru/jour/article/view/91

The dependence of the energy consumption decrease on the different feed composition for the separation of C4+ vapor cracking fraction by means of complex columns implementation is investigated. Distillation sequences consisting of simple columns and partially thermally coupled distillation columns are compared. Cases of direct and indirect separation for all the schemes are considered. In order to reduce capital cost and industrial areas the implementation of dividing wall columns was proposed. These dividing wall columns are the thermodynamic analogs of partially thermally coupled distillation flowsheets. Analysis of temperature, liquid and vapor profiles in the partially thermally coupled distillation sequence revealed that only one column in the original flowsheets requires a structural change when converting it to the partially thermally coupled configuration. It is shown that the complex columns provide energy consumption reduction in the reboilers by 3-60% as compared to conventional distillation schemes.

Исследована зависимость снижения энергетических затрат на разделение смеси C4+ фракций продуктов пиролиза за счет применения сложных колонн для различного состава сырья. Рассмотрено ректификационное разделение как в последовательностях, состоящих из двухотборных колонн, так и в комплексах с частично связанными тепловыми и материальными потоками, полученных на их основе. Для всех вариантов схем исследованы режимы работы по первому и второму заданным разделениям. С целью снижения капитальных затрат и уменьшения занимаемых производственных площадей предложено использование колонн с перегородками, которые являются термодинамическими аналогами комплексов с частично связанными тепловыми и материальными потоками. Изучено распределение температур, потоков жидкости и пара по высоте колонн; на основе этого показано, что при переходе к комплексам с частично связанными тепловыми и материальными потоками только одна из колонн потребует конструктивных изменений. Выявлено, что использование сложных колонн обеспечивает снижение энергозатрат в кипятильниках на 3-60% относительно схем из простых колонн.

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The authors declare that there are no conflicts of interest present.