Three-oil mixture phenol removing method and device

Abstract

The invention relates to a three-oil mixture phenol removing method and device. The method comprises enabling three-oil mixtures and aldehydes and / or ketones to react in an alkaline environment to form phenolic resin; then performing solid-liquid separation on the reaction products to obtain a solid phase and a liquid phase, wherein the liquid phase is phenol-removed three-oil mixtures. The device comprises a reactor and a separating device, the discharging port of the reactor is connected with the feeding port of the separating device, and the separating device is a solid-liquid separating device; the reactor is used for enabling the three-oil mixtures and the aldehydes and / or the ketones to react in the alkaline environment to form the phenolic resin, wherein the ketones comprise a-H; the solid-liquid separating device receives and separates materials from the reactor to obtain the solid phenolic resin and liquid materials. According to the three-oil mixture phenol removing method, the phenol removal process does not require a large amount of water, the content of phenol in the reaction products is lower than that in existing separating technology, and the raw material quality of industrial naphthalene can be improved.

Description

technical field [0001] The invention relates to a method for removing phenols, in particular to a method for removing phenols from triple-mixed oil and a device for removing phenols. Background technique [0002] Trimix oil is a trimix fraction of phenol oil fraction, naphthalene oil fraction and washing oil fraction cut during the distillation of coal tar. Triblend oil is an important industrial raw material, which can be used to produce industrial naphthalene raw materials. [0003] The production of industrial naphthalene raw materials from triblend oil requires separation of the phenol oil fraction, but both phenol and naphthalene are high-boiling compounds with similar boiling points, and it is difficult to separate phenol and naphthalene by distillation and fractionation. [0004] In the prior art, the method of alkali washing is used to separate the classified substances in the three-mixed oil, that is, to add alkaline substances, such as sodium hydroxide, etc. to th...

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Problems solved by technology

[0003] The production of industrial naphthalene raw materials from triblend oil requires the separation of the phenol oil fraction. However, both phenol and naphthalene are high-boiling compounds with similar boiling points. It is difficult to separate phenol and naphthalene by distillation and fractionation.

[0004] In the prior art, the classified substances in the three-mixed oil are separated by alkali washing, that is, an alkaline substance, such as sodium hydroxide, etc. is added to the three-mixed oil, and after the alkaline substance reacts with the phenol in the three-mixed oil Generate phenoxides, and then separate the generated phenoxides by washing with water. However, the existing alkali washing method consumes a lot of water in the process of removing phenols. On average, 1 ton of triple-mixed oil consumes 6-7 tons of water. The produced sodium phenate brine solution is difficult to handle, causing environmental pollution

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