Producing sales quality PVC from raw materials involves several steps. Initially, ethylene dichloride (EDC) must be produced from the feed stocks of ethylene and chlorine. The EDC is then thermally cracked to produce vinyl chloride (VCM), …

The EDC from the oxychlorination process and the unconverted EDC from the cracking process are purified in the EDC distillation unit. Water and low boiling components are removed in the dewatering column.

Nov 25, 2024 · We are currently looking for inhibitor to stop free radical polymerization of Chloroprene in our EDC-VCM systems. during the shutdown, we found severe chloroprene choking in the light end's column, the overhead line, the reflux, line and in reflux drum.

Initially, ethylene dichloride (EDC) must be produced from the feed stocks of ethylene and chlorine. The EDC is then thermally cracked to produce vinyl chloride (VCM), which is the chemical precursor to the PVC polymer. The VCM must be purified and dosed with a polymerization inhibitor to prevent spontaneous polymerization.

EDC uses proximity data domains to narrow down the inferred results to identify close-to-identical columns or fields for a data domain. EDC displays the results as a match score for the data domain.

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Learn by example and propagated by looking at column similarity. Exist as an object in the catalog and can be enriched as well. Identify clusters of columns that contain similar data within and across data sources. When data domains are inferred against specific columns, the associated glossary terms are recommended for those columns.

The actual production of VCM involves three distinct processes: 1) the chlorination of ethylene, 2) the oxychlorination of ethylene and 3) the thermal cracking of ethanedichloride (EDC). In this project we will focus solely on the thermal cracking of …

... distillation column under study belongs to a commercial plant producting 1,2-EDC, one of the steps prior to obtaining the final product PVC (poly- vinyl chloride). Figure 2 shows the...

Mar 26, 2017 · I am working on the rating of a Recycle EDC (ethylene dichloride) Column for a VCM expansion project. I rated the column in KG Tower. (1) I assumed there is no foaming and used system factor of 1. (2) I got warnings for the dry tray pressure drop in the top section of the tower, around 4.9 mmHg.