Compositions and methods for recovering and/or removing reagents from porous media

Inactive Publication Date: 2016-02-11
GREEN SOURCE ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a method for extracting, removing, and recovering trapped solvent and associated liquids from rubber, plastics, and other materials that have been treated with a solvent. The method involves contacting the material with an alcohol, an organic compound with a hydroxyl functional group, and / or an organic or inorganic solvent, to form a recovery mixture containing the solvent and a residual material. The residual material includes non-soluble material from the material and a reduced portion of the trapped solvent. The recovery mixture is then separated from the residual material. The residual material can also include a reduced portion of the trapped solvent. The invention also provides a composition for extracting, removing, and recovering trapped solvent and associated liquids from hydrocarbon-containing materials. The technical effects of the invention include improved methods for extracting, removing, and recovering trapped solvent and associated liquids from various materials, which can help to reduce the amount of solvent waste and improve the efficiency of the process.

Problems solved by technology

However, because a substantial portion of the solvents, e.g., turpentine liquids, remain trapped within these materials after treatment, there remains a need in the art for a method of dissolving, extracting, and / or removing solvents such as turpentine liquids from the turpentine liquid-treated rubbers, plastics, and hydrocarbon-containing materials.
The liquefaction, solubilization and / or extraction of fossil fuels, also called hydrocarbon-containing organic matter, in solid, semi-solid, highly viscous or viscous form (individually and jointly referred to as fossil fuels hereafter) have proven to be extremely challenging and difficult.
The difficulty can in part be attributed to the fact that these fossil fuels include complex organic polymers linked by oxygen and sulfur bonds, which are often imbedded in the matrices of inorganic compounds.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

Extraction of Turpentine Liquid from Rubber

[0054]A crumb rubber sample having turpentine liquid trapped within its pores was subjected to solvent extraction according to the present invention. The crumb rubber sample was initially tested and found to have about 200 wt. % turpentine. The crumb rubber sample was mixed with isopropyl alcohol (IPA) at a 1:1 mass ratio under ambient pressure and at about 15° C. for 5 minutes. The mixing procedure was repeated twice. After extraction, the amount of turpentine liquid remaining in the pores of the crumb rubber sample was about 0.001 wt. % of the crumb rubber.

example 2

Extraction of Turpentine Liquid from Coal

[0055]A coal sample having turpentine liquid trapped within its pores was subjected to solvent extraction according to the present invention. The coal sample was initially tested and found to have about 40 wt. % turpentine. The coal sample was mixed with hexane at a 1:1 mass ratio under ambient pressure and at about 70° C. for about 30 minutes. The mixing procedure was performed twice. After extraction, the amount of turpentine liquid remaining in the pores of the coal sample was about 1 wt. % of the coal.

example 3

Extraction of Solvents from Rubber

[0056]Crumb rubber samples having various solvents trapped within pores were subjected to solvent extraction according to the present invention as summarized in the below table.

Percentage ofContactSolvent-TrappedTimeextractingSolventSolventTemperature(min)PressureCompositionExtractedPara-cymene  ~20° C.5-15Ambientisopropanol95-99%Pinene  ~20° C.5-15Ambientisopropanol95-99%Dimethyl  ~20° C.5-15Ambientisopropanol95-99%sulfoxide(DMSO)Mixture of  ~20° C.5-15Ambientisopropanol95-99%DMSO with ablend ofturpentine liquids(30:70)Mixture of  ~20° C.5-15Ambientisopropanol95-99%toluene with ablend ofturpentine liquids(50:50)Blend of~20-40° C.5-15Ambientmethanol95-99%turpentine liquidsBlend of~20-40° C.5-15Ambientethanol95-99%turpentine liquidsBlend of~20-40° C.5-15Ambientpropanol95-99%turpentine liquidsBlend of~20-40° C.5-15Ambientisopropanol95-99%turpentine liquidsBlend of~20-40° C.5-15Ambientbutanol95-99%turpentine liquids

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PUM

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Abstract

A composition and method for displacing, dissolving, extracting, recovering, and / or removing solvent and / or any solvent-associated liquids from a solvent-treated material or penetrating through pores or the surface of a solvent-treated material using a solvent-extracting composition for contacting solvent-treated material and separating the solvent and any solvent-associated liquids from the solvent-treated material as well as the solvent-extracting composition.

Description

FIELD OF THE INVENTION[0001]The present invention relates to the field of removal, displacement, dissolution, extraction, or penetration through pores or surface of a material containing solvent trapped in its pores after a process of extracting hydrocarbons from the material or solvent treatment of the materials.BACKGROUND OF THE INVENTION[0002]Processes for the devulcanization of rubber, as well as the liquefaction, solubilization and / or extraction of hydrocarbon-containing organic matter from hydrocarbon-containing materials, using turpentine liquids have been developed as described in U.S. Pat. No. 7,767,722 and U.S. Pat. No. 8,101,812. Processes for the recycling of plastics comprising polymers via solvent treatment have been developed as described in PCT Pub. No. WO 2012 / 033742. However, because a substantial portion of the solvents, e.g., turpentine liquids, remain trapped within these materials after treatment, there remains a need in the art for a method of dissolving, extr...

Claims

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Application Information

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IPC IPC(8): C10G1/04C10G1/10
CPCC10G1/10C10G1/04
InventorFAN, LIANG-TSENGSHAFIE, SHAHRAM REZATOLLAS, JULIUS MICHAELLEE, WILLIAM ARTHUR FITZHUGH
OwnerGREEN SOURCE ENERGY