BTX Gold™ Solvents

In the petrochemical industry, fractional distillation is the mainstay for separating components on the basis of different boiling points. When the individual component boiling points are close or when there is need for ultra-high purity products, then other techniques are used to facilitate the separation.

Solvent-enhanced systems are useful when the components to be separated have
different functional groups. These respond to polar solvents in this general trend of attractiveness:

The effect is either a higher solubility in the solvent for liquid-liquid extraction, or an altering of the boiling points for extractive distillation. Stage-wise contacting the solvent with the hydrocarbons builds a concentration profile until the desired product specs are reached. Once the solvent has made the primary separation into an extract and raffinate, the solvent is recovered from the extract stream to be re-used.

Our experienced team at GTC Vorro Technology has been successful in developing and applying advanced separations systems, using the synergies of blended solvents and hybrid designs that give the most robust operation and require the lowest energy consumption. For BTX separation, we use mixed polar solvents, which preferentially separate aromatics from olefins or naphthenes, and paraffins. The aromatic content and boiling range of the feed dictate the type of separation system to use and the optimum solvent formula to give the best performance. GTC Vorro Technology uses custom-formulated blends that balance the solvency and selectivity of the solvent with the feedstock to give improved performance over single-component solvents or standard blends.

BTX Gold™ solvents are available for every application containing aromatics, from 5% - 99% aromatic content, with thermal or catalytically cracked, reformed, or straight run feedstock. All of the solvents are chemically stable and environmentally acceptable for the refining and petrochemical.

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