Apparatus and Process for Cracking Hydrocarbonaceous Feed Treated to Adsorb Paraffin-Insoluble Compounds
OwnerJohn D. Y. Ou, Robert D. Strackinventors
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Abstract
An apparatus and process are provided for thermally cracking hydrocarbon feeds containing paraffin insoluble compounds by selectively adsorbing paraffin-insoluble compounds with solid particulate adsorbents, prior to cracking. An aromatics-containing stream such as one derived from cracked product is used to desorb the paraffin insoluble compounds from the adsorber stage.
Claims25
An apparatus for cracking hydrocarbonaceous feed containing paraffin-insoluble compounds, which comprises:
- A) a feed treating zone, which comprises an adsorber vessel for treating the hydrocarbonaceous feed comprising a) a hydrocarbonaceous feed inlet, b) adsorbent particles capable of selectively sorbing paraffin-insoluble compounds, and c) an outlet for removing paraffin-insoluble compounds-depleted effluent;
- B) a cracking zone comprising a) an inlet for receiving paraffin-insoluble compounds-depleted effluent from the feed treating zone, b) an outlet for removing cracked effluent containing aromatics;
- C) a separator for removing an aromatics-containing stream from the cracked effluent comprising a) an inlet for receiving the cracked effluent, b) an outlet for removing the aromatics-containing stream, and c) an outlet for removing remaining cracked effluent;
- and
- D) an inlet to the feed treating zone for receiving aromatics-containing stream as desorbent from the outlet for removing the aromatics-containing stream of step C).
A process for cracking hydrocarbonaceous feed containing paraffin-insoluble compounds that comprises:
- a) contacting the feed in an adsorption zone with adsorbent particles capable of selectively adsorbing paraffin insoluble compounds from the feed under conditions sufficient for the adsorbent particles to sorb the paraffin-insoluble compounds to provide a treated feed of reduced paraffin-insoluble compounds content and adsorbent particles at least partially sorbed with paraffin-insoluble compounds;
- b) cracking the treated feed in a cracking zone at conditions sufficient to provide a cracked product containing aromatics;
- c) separating an aromatics-containing stream from the cracked product;
- and
- d) directing the aromatics-containing stream from the cracked product to the adsorption zone and contacting with the adsorbent particles under desorption conditions sufficient to at least partially desorb the paraffin-insoluble compounds therefrom, thereby providing regenerated adsorbent particles and an aromatics-containing stream containing desorbed paraffin-insoluble compounds.
An apparatus for steam cracking hydrocarbonaceous feed containing paraffin-insoluble compounds, which comprises:
- A) a feed treating zone, which comprises an adsorber vessel for treating the hydrocarbonaceous feed comprising a) a hydrocarbonaceous feed inlet, b) adsorbent particles capable of selectively sorbing paraffin-insoluble compounds, and c) an outlet for removing paraffin-insoluble compounds-depleted effluent;
- B) a steam cracking zone comprising a) an inlet for receiving paraffin-insoluble compounds-depleted effluent from the feed treating zone, b) an outlet for removing cracked effluent containing aromatics, and c) a steam inlet;
- and
- C) a separator for removing an aromatics-containing stream from the cracked effluent comprising a) an inlet for receiving the cracked effluent, b) an outlet for removing the aromatics-containing stream, and c) an outlet for removing remaining cracked effluent.
A process for steam cracking hydrocarbonaceous feed containing paraffin-insoluble compounds that comprises:
- a) contacting the feed in an adsorption zone with adsorbent particles capable of selectively adsorbing paraffin insoluble compounds from the feed under conditions sufficient for the adsorbent particles to sorb the paraffin-insoluble compounds to provide a treated feed of reduced paraffin-insoluble compounds content and adsorbent particles at least partially sorbed with paraffin-insoluble compounds;
- b) steam cracking the treated feed in a cracking zone at conditions sufficient to provide a cracked product containing aromatics;
- and
- c) separating an aromatics-containing stream from the cracked product.
Dependencies are inferred from the claim text.