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Method for oil-solid separation with reversible extraction solvent

An extraction solvent and solid separation technology, applied in the field of multifunctional extraction solvents, can solve the problems of expensive preparation of auxiliary agents, high volatility, difficult recovery, etc., and achieve the effects of clean residual solids, low volatility and simple process

Active Publication Date: 2018-03-06
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are some problems in the current solvent extraction method, such as the high volatility of the solvent used will cause the inevitable solvent loss, the difficulty of recovering the residual solvent from the residual solid after extraction, and the high Problems such as energy consumption, expensive preparation of ionic liquids and other additives, difficulty in recycling, etc.

Method used

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  • Method for oil-solid separation with reversible extraction solvent
  • Method for oil-solid separation with reversible extraction solvent
  • Method for oil-solid separation with reversible extraction solvent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A preparation method of a reversible extraction solvent, the steps are as follows:

[0032] Mix 1,3-dibromopropane (0.25 mol) and diethylamine (1 mol) and add solvent water into reactor 8, and stir and react at 40°C for 7 hours. The mixture is saturated with alkali, the product is extracted in the extraction tank II9 with an organic solvent, and sent to the rectification column 10 for rectification to obtain the prepared reversible extraction solvent 16 (N, N, N', N'-tetraethyl-1,3- Propylenediamine).

Embodiment 2

[0034] A preparation method of a reversible extraction solvent, the steps are as follows:

[0035] Mix 1,3-dichloropropane (0.25 mol) and diethylamine (0.85 mol) and add solvent water into reactor 8, and stir and react at 45°C for 9 hours. Saturate the mixture with alkali, use an organic solvent to extract the product in the extraction tank II9, and send it to the rectification tower 10 for rectification to obtain the prepared reversible extraction solvent 16 (N, N, N', N'-tetraethyl-1,3 - propylenediamine).

Embodiment 3

[0037] Several different water additions assist the reversible extraction solvent to carry out the oil-solid separation method of Indonesian bituminous ore. The steps are as follows:

[0038] The volume ratio of added water to solvent is 0:1, 01:1, 03:1, 05:1.

[0039] Take 5g of Indonesian oil sand and put it into the extraction tank I1, send 10mL of the reversible extraction solvent provided by the above example 1 and an appropriate amount of water (the ratio is as above) into the compounding tank 7 for mixing, and then send it into the extraction tank I1 for extraction. Under normal circumstances, extract for 30min. After the extraction is completed, it is sent to the solid-liquid separation tank 2 for separation to obtain the upper extraction oil / solvent phase, the middle water phase and the lower sand grains. The sand particles in the lower layer are transferred back to the extraction tank I1, continue to add 10 mL of fresh new reversible solvent and appropriate amount o...

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Abstract

The invention relates to a method for oil-solid separation with a reversible extraction solvent. Specifically, the reversible extraction solvent is mixed with a small amount of water to form an oil-water two-phase mixture, and extraction is carried out on an oily solid, the dual functions of the reversible extraction solvent are brought into full play, a carbon dioxide water solution is introducedinto a reversible extraction solvent and oil product mixture, then an oil product can be separated from the upper layer, nitrogen can be introduced into the lower layer and heating is carried out, and the reversible extraction solvent can be recovered and recycled, thus being energy saving and environment-friendly. The technology adopted by the invention has the advantages of mild extraction conditions, good oil product quality, and solid cleanness after extraction. The reversible extraction solvent provided by the invention has the advantages of low volatility, adjustable hydrophilic and hydrophobic properties, environmental friendliness and easy recovery, and the preparation process is simple.

Description

technical field [0001] The invention relates to a method for separating an oil-solid mixture, which belongs to the technical field of chemical separation, and specifically relates to providing a multifunctional extraction solvent and using the solvent to separate the oil-solid mixture. Background technique [0002] Oil-solid mixture separation is widely used in various fields, including unconventional oil extraction, oil-contaminated soil remediation, pipeline deoiling, paper deinking, etc. Currently, the use of chemicals is the main method for oil-solid separation, including surfactants, ionic liquids, polymers, nanoparticles, etc. Indonesian bituminous ore is a kind of carbonate-type unconventional petroleum mineral. Due to its rich geological reserves, it has received more and more attention in the field of oil-solid separation. Many processes have been proposed by researchers to exploit this mineral, such as solvent extraction process, thermal cracking process, microbia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/04
CPCC10G1/04
Inventor 何林杨子琪隋红李鑫钢
Owner TIANJIN UNIV