Projektiranje sustava za vođenje kolone s razdjelnom stijenkom u 2-3-3 konfiguraciji

master's thesis

• Title (english): Control system design of a dividing wall column in the 2-3-3 configuration
• Author: David Cirimotić
• Mentor: Igor Dejanović (mentor)
• Committee member: Igor Dejanović (predsjednik povjerenstva)
• Committee member: Nenad Bolf (član povjerenstva)
• Committee member: Goran Lukač (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2024-02-23, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering

Abstract

Destilacijske kolone s razdjelnim stijenkama inovativan su koncept toplinske separacijske tehnologije za dobivanje destilacijskih proizvoda visoke čistoće uz smanjenje potrošnje energije i troškova ulaganja. KRS kolona u 2-3-3 konfiguraciji za dobivanje četiri proizvoda sastoje se od jedne kolone s rebojlerom, dva kondenzatora i tri razdjelne stijenke.
Zbog razdjelnih stijenki u unutrašnjosti kolone postoje dvije raspodjele kapljevine i tri raspodjele pare. U ovome radu korišteni su procesni simulatori Chemcad i Aspen HYSYS za izradu pojednostavljenih statičkih i proširenog dinamičkog modela, sinteze sustava za vođenje, provedbu analize osjetljivosti i ispitivanja u zatvorenom regulacijskom krugu, dok je obrada podataka provedena u MS Excelu. Sintetizirana regulacijska shema dinamičke simulacije kolone pokazuje mogućnost stabilnog vođenja kolone pri unošenju poremećaja.
Vrijeme potrebno da bi se postiglo stacionarno stanje nakon unesenog poremećaja varira od proizvoda do proizvoda za svaki ispitani slučaj, a uočeno je kako se teža ključna komponenta brže stabilizira od lakše.

Abstract (english)

Distillation columns with dividing walls (DWC) are an innovative concept of thermal separation technology for obtaining high-purity distillation products, while reducing energy consumption and investment costs. DWC in a 2-3-3 configuration for obtaining four products consists of one column with a reboiler, two condensers and three dividing walls.
Due to dividing walls, there two liquid and three vapor splits need to be ensured inside the column. In this work, process simulators Chemcad and Aspen HYSYS were used to create a simplified steady-state and extended dynamic models, perform synthesis of a control system, implement sensitivity analysis and perform closed-loop tests, while data processing was carried out in MS Excel. The sythesized control system showed stable control of the column when disturbances were introduced. The time required to reach a steady state after an introduced disturbance varies from product to product for each case tested, and it has been observed that the heavier key component stabilizes faster than the lighter one.

• Keywords: destilacija; kolone s razdjelnim stijenkama; projektiranje KRS; upravljivost procesa
• Keywords (english): distillation; dividing walls column; DWC design; process controllability
• Language: croatian
• URN:NBN: urn:nbn:hr:149:437277
• Study programme: Title: Chemical Engineering - Graduate study; Study programme type: university; Study level: graduate; Academic / professional title: sveučilišni/a magistar/magistra inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-02-29 10:47:56