Energy, exergy, economic and environmental analysis of a novel steam-driven vapor recompression and organic Rankine cycle intensified dividing wall column

Energy, Exergy, Economic, and Environmental Analysis of the Vapor Recompression-Assisted Liquid-Only Transfer Extractive Dividing Wall Column for Separating Minimum-Boiling Point Azeotropes

“… where H t represents the stack height of the tray and F c , as the installation coefficient for the tray, is equal to F m (material factor) + F t (type factor) + F s (space factor), where F m , F t , and F s are equal to 0, 0, and 1 for carbon steel, respectively. where A and Q (kW) represent the area and duty of the heat exchanger, respectively; U (kW/(K·m 2 )) represents the heat transfer coefficient, which is 0.852 and 0.568 for the condenser and heater, respectively; Δ T (K) is the temperature driving force; and F c , as the installation coefficient for the heat exchanger, is equal to F m (material factor) × { F t (type factor) + F p (pressure factor)}, where F m , F t , and F p are equal to 1, 1.35, and 0 for carbon steel, respectively. where bhp (kW) represents the brake horsepower of the compressor and F c , as the installation coefficient for the compressor, is equal to 1. where V outlet (m 3 /s) represents the volumetric flow rate at the outlet of the turbine. where C h ($/GJ) and Q R (GJ/h) are the price of the heat steam and heat duty of heaters, respectively; C c ($/GJ) and Q C (GJ/h) are the price of cooling water and heat duty of condensers, respectively; and C e ($/(kW·h)) and bhp (kW) are the price of electricity and the brake horsepower of the compressor, respectively. In this study, the price of electricity purchased, electricity sold, and cooling water is 0.1, 0.12, and 0.354 ($/(kW·h)), respectively . The price of heat steam is determined by the TLV system and listed in Table …”

“…where A and Q (kW) represent the area and duty of the heat exchanger, respectively; U (kW/(K•m 2 )) represents the heat transfer coefficient, which is 0.852 and 0.568 for the condenser and heater, respectively; 41 ΔT (K) is the temperature driving force; 42…”

“…where A and Q (kW) represent the area and duty of the heat exchanger, respectively; U (kW/(K•m 2 )) represents the heat transfer coefficient, which is 0.852 and 0.568 for the condenser and heater, respectively; 41 ΔT (K) is the temperature driving force; 42 where C h ($/GJ) and Q R (GJ/h) are the price of the heat steam and heat duty of heaters, respectively; C c ($/GJ) and Q C (GJ/h) are the price of cooling water and heat duty of condensers, respectively; and C e ($/(kW•h)) and bhp (kW) are the price of electricity and the brake horsepower of the compressor, respectively. In this study, the price of electricity purchased, electricity sold, and cooling water is 0.1, 0.12, and 0.354 ($/(kW•h)), respectively.…”

Separation of Ternary System 1,2-Ethanediol + 1,3-Propanediol + 1,4-Butanediol by Liquid-Only Transfer Dividing Wall Column

“…It demonstrated that product purity can be controlled by manipulating reflux ratio, side-product flow, liquid split, and ratio reboiler duty with a tiny purity deviation. However, only about 200 DWCs Processes 2023, 11, 3150 2 of 22 have been built globally [12]. Effectively controlling the vapor split ratio [13], which substantially impacts product purity, capital cost, and energy consumption, is one of the DWC application's constraints.…”