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Recovery method of isohexane solvent oil

A recovery method and solvent oil technology, applied in the petroleum industry, processing hydrocarbon oil, hydrocarbon oil treatment products, etc., can solve the problems of high cost, shortage of petroleum resources, high production cost, etc., and achieve resource saving, simple recovery method and high recovery rate high effect

Inactive Publication Date: 2017-05-10
JIANGYIN WUYANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the production of isoparaffin solvent oil is mainly obtained from isoparaffin and olefins through alkylation reaction, hydrogenation, and distillation, but it is difficult to prepare high boiling point solvent oil, and the preparation cost is relatively high
[0004] Due to the difficulty in producing isoparaffin solvent oil and high cost; coupled with the increasing shortage of petroleum resources and the serious environmental pollution caused by solvent oil discharge, the recovery of isoparaffin solvent oil is of great significance, but there is no way to recycle at present Good way to isoparaffin spirits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The recovery method of isohexane solvent oil comprises the following steps:

[0019] Step 1, oxidize the waste liquid of isohexane solvent oil, select potassium hydrogen persulfate as the oxidant, and separate the organic layer;

[0020] Step 2, under the condition of 130~160 DEG C, the separated organic layer is treated with a catalyst, the active components of the catalyst are Mo, Ni, Co, the catalytic carrier is alumina, and the molar ratio of Mo, Ni, Co is 1: 0.5:0.2;

[0021] Step 3, the liquid treated in step 2 is adsorbed with activated carbon, and the crude isohexane solvent oil that slips out is collected;

[0022] Step 4, rectifying the collected crude isohexane solvent oil, and collecting fractions at 58-65°C under a pressure of 5-10 mmHg.

[0023] Preferably, in step 2, the temperature at which the catalyst treats the organic layer is 150-160°C.

[0024] The catalyst is prepared by dissolving carbonates or phosphates of Mo, Ni, and Co, adding a carrier, a...

Embodiment 2

[0026] The recovery method of isohexane solvent oil comprises the following steps:

[0027] Step 1, oxidize the waste liquid of isohexane solvent oil, select sodium peroxide and persulfuric acid as the oxidizing agent, and separate the organic layer;

[0028] Step 2, under the condition of 130~160 DEG C, the separated organic layer is treated with a catalyst, the active components of the catalyst are Mo, Ni, Co, the catalytic carrier is alumina, and the molar ratio of Mo, Ni, Co is 1: 0.8:0.5;

[0029] Step 3, the liquid treated in step 2 is adsorbed with activated carbon, and the crude isohexane solvent oil that slips out is collected;

[0030] Step 4, rectifying the collected crude isohexane solvent oil, and collecting fractions at 58-65°C under a pressure of 5-10 mmHg.

[0031] Preferably, in step 2, the temperature at which the catalyst treats the organic layer is 150-160°C.

[0032] The catalyst is prepared by dissolving carbonates or phosphates of Mo, Ni, and Co, addi...

Embodiment 3

[0034] The recovery method of isohexane solvent oil comprises the following steps:

[0035] Step 1, passing the isohexane solvent oil waste liquid into ozone for oxidation, and separating the organic layer;

[0036] Step 2, under the condition of 130~160 DEG C, the separated organic layer is treated with a catalyst, the active components of the catalyst are Mo, Ni, Co, the catalytic carrier is alumina, and the molar ratio of Mo, Ni, Co is 1: 0.4:0.3;

[0037] Step 3, the liquid treated in step 2 is adsorbed with activated carbon, and the crude isohexane solvent oil that slips out is collected;

[0038] Step 4, rectifying the collected crude isohexane solvent oil, and collecting fractions at 58-65°C under a pressure of 5-10 mmHg.

[0039] Preferably, in step 2, the temperature at which the catalyst treats the organic layer is 150-160°C.

[0040] The catalyst is prepared by dissolving carbonates or phosphates of Mo, Ni, and Co, adding a carrier, and standing still; evaporatin...

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PUM

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Abstract

The invention relates to a recovery method of isohexane solvent oil. The recovery method comprises the steps of 1, oxidizing isohexane solvent oil waste liquid, and separating out an organic layer; 2, treating the separated organic layer at the temperature of 130-160 DEG C by using a catalyst; 3, absorbing the liquid treated in the step 2 by using activated carbon, and collecting coarse isohexane solvent oil; 4, rectifying the collected coarse isohexane solvent oil, and collecting fraction with the temperature of 60-130 DEG C under the pressure of 5-10mmHg. After the method is adopted, the isohexane solvent oil can be recovered, and the recovery rate is high; the recovery method is simple and saves resources.

Description

technical field [0001] The invention relates to a recovery method of solvent oil, in particular to a recovery method of isohexane solvent oil. Background technique [0002] Solvent oils can be divided into aromatic hydrocarbons, dearomatized aliphatics, isoparaffins, naphthenes, and normal paraffins, etc. Among them, isoparaffin solvent oils have low freezing point, low odor, low toxicity and good safety, etc. Advantages, widely used in printing and dyeing thinners, ink solvents, metal processing cleaning agents, rust inhibitors, odorless sprays, odorless oil paints, organosol formulations, clothes dry cleaning oils, organic compound carriers, etc. [0003] At present, the production of isoparaffin solvent oil is mainly obtained from isoparaffin and olefin through alkylation reaction, hydrogenation and distillation, but it is difficult to prepare high boiling point solvent oil, and the preparation cost is relatively high. [0004] Due to the difficulty in producing isoparaf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/14
CPCC10G53/14C10G2300/1007C10G2400/18
Inventor 孔瑞用孔维立林国民
Owner JIANGYIN WUYANG CHEM