Waste Management in Propylene Epoxidation Process with the Use of Supercritical Fluid Media

Abstract

Experimental results on solubility of the styrene, phenol, methylphenylcarbinol, acetophenone, ethyl benzene, propylene glycol and molybdenum as a complex with Trilon B in supercritical CO 2 obtained using a dynamic (flow) method are presented. The obtained data are described in the framework of Peng-Robinson equation. The results of the experiments on the extraction of organic components from waste formed in the olefin epoxidation process at Nizhnekamskneftekhim Inc., on the analysis of extract composition, and on the testing of the extract as an epoxidation catalyst are presented. The supercritical water oxidation (SCWO) process of epoxidation process waste was conducted in periodical and continuous mode. The analysis results of reaction product are given. Pilot experiments on dry sediment formation were conducted using Radio Frequency (RF) Inductively Coupled Plasma (ICP) of low pressure.

Solubility of Acetophenone in Supercritical Carbon Dioxide

“…For the design of the supercritical extraction process of acetophenone from the natural matrices, the equilibrium or solubility data of acetophenonesupercritical CO 2 is needed. Currently, several literatures [5,6] report the solubility of acetophenone in supercritical carbon dioxide. Bamberger and Maurer [5] studied the solubility several aromatic hydrocarbons including acetophenone in supercritical carbon dioxide using a flow type apparatus.…”

“…The measurements were performed at temperatures between 313 K and 393 K at pressures up to 18 MPa. Recently, Gumerov et al [6] used the supercritical CO 2 to extract several hydrocarbons and molybdenum from waste of propylene epoxidation process. They used dynamic flow method to extract and to obtain the solubility those hydrocarbons, and one of the hydrocarbons was acetophenone.…”

Review: <i>Discovering the Cluster World. Clusters’ Hidden Parameters Extraction from Thermophysical Data</i> and <i>The Wonders of Molecular Interactions. The Experimentally Based Molecular Interaction Features</i>

“…The processing of polymers [31], regeneration and synthesis of catalysts with CO 2 in a supercritical state [32] have become multimillion dollar businesses and the processing of waste from the chemical [33] and atomic energy industries [34] is an important environmental issue. The importance of the use of SFs in SFC, especially in isomer separation, is difficult to overestimate [1]- [8] [35].…”

Oxidation of Fatty Acids by Hydrogen Peroxide in Aqueous Medium Under Supercritical Fluid Conditions

“…Implementation of SCWO in a continuous mode provides a real possibility for recovery of industrial wastewater [6]. Water in supercritical fluid conditions (T cr =374.15°С; Р cr =22.13 МPа) is a universal solvent capable of increasing the intensity of heat and mass transfer processes, as well as accelerating chemical reactions [7][8][9]. When transferring water wastes into supercritical fluid state in the presence of an oxidizing agent, oxidation of organic compounds takes place, with carbon dioxide and water as the reaction products.…”