Aromatic hydrocarbon extraction device

Abstract

The invention discloses an aromatic hydrocarbon extraction device, and relates to the technical field of aromatic hydrocarbon extraction equipment. The aromatic hydrocarbon extraction device comprises an equipment frame, wherein the equipment frame comprises a bottom mounting frame and a top mounting frame which are connected with each other, wherein a solvent tank and an extraction tank are mounted at the top of the top mounting frame; a recovery tank and a fractionation tank are mounted at the top of the bottom mounting frame; a feeding pipe is fixedly connected to the top of the solvent tank; a transfer pump is mounted between the solvent tank and the extraction tank; and the liquid suction end of the transfer pump is connected to the bottom of the solvent tank through a pipeline. According to the invention, the temperature of an extracting agent can be adjusted in real time according to the change of an environment temperature through the arranged solvent tank with a temperature adjusting function, so a heat preservation interval is formed between the arranged outer tank and the inner tank; and a heating rod is arranged in the device to serve as a heat source, so when the device is used for extracting, the extracting agent is kept at a proper temperature so as to avoid the influence of the environment temperature on the whole process, and the solvent tank can effectively preserve the heat of an internal extracting solution so as to reduce energy consumption.

Description

technical field [0001] The invention relates to the technical field of aromatics extraction equipment, in particular to an aromatics extraction device. Background technique [0002] Aromatics extraction, also known as aromatics extraction, is the process of separating aromatics from hydrocarbon mixtures with extractants, mainly used to recover light aromatics (benzene, toluene, various xylenes) from catalytic reforming and hydrocarbon cracking steam, sometimes It is also used to recover naphthalene from catalytic cracking diesel oil, and the remaining non-aromatic hydrocarbons after extracting aromatics are called raffinate oil. Aromatic hydrocarbons are referred to as "aromatic hydrocarbons" for short, and generally refer to hydrocarbons containing a benzene ring structure in their molecules. [0003] The Chinese invention patent with the patent publication number CN108375549A discloses an extraction device and method for automatically separating petroleum components, whic...

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Problems solved by technology

[0004] The following problems still exist in the specific implementation of the above-mentioned patents. 1. The collection method used in this patent is laboratory equipment, which is only suitable for small-scale oil extraction and cannot be used as a large-scale production equipment; 2. Others Using ordinary distillation, the by-products with higher boiling points in the extraction process will condense together with the product when it enters the condensation, and the obtained product also contains more impurities and has a lower purity.

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