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Method for extracting salts and temperature-regenerated extracting composition

An extraction and thermal regeneration technology, applied in the field of salt ion extraction, can solve problems such as limiting high value-added applications and membrane fouling

Active Publication Date: 2019-04-16
ADIONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the electrical energy consumed is directly proportional to the salt moved, limiting its high value-added applications in the case of brine treatment
This technique is not selective for ions with the same charge and therefore not selective for the metal or anion to be extracted, and there is also a risk of membrane fouling

Method used

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  • Method for extracting salts and temperature-regenerated extracting composition
  • Method for extracting salts and temperature-regenerated extracting composition
  • Method for extracting salts and temperature-regenerated extracting composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0433] Example 1: Extraction of a single-salt salt solution with CEM1 at room temperature

[0434] In this example, the CEM used was 4-tert-butyl-calix[4]arenetetrakis(N,N-diethylacetamide) (CAS# for CEM1: 114155-16-7).

[0435] According to the synthetic procedure described in the publication "Calixarene Amide Selective Complexation of Alkali and Alkaline Earth Cations, New J. Chem, 1991, 15, 33-37", it was obtained from 4-tert-butylcalix[4]arene Molecular formula C 44 h 56 o 4 Synthesized in China, CAS# is 60705-62-6, purchased from TCI Chemicals company.

[0436] The ASM used is ASM2, CAS#32707-89-4, C 9 h 6 f 6 O, MW = 244.13 g / mol, a white solid, available from several distributors. It is characterized by:

[0437]

[0438] parameter

value

unit

density

(1.433)

kg / L

viscosity

-

mPa.s

BP

255

℃

MP

55

℃

FP

97

℃

Log P

3.0 (estimated)

-

Solubility

2.29

...

Embodiment 2

[0443] Example 2: Extraction of salt from seawater by using CEM1

[0444] The extraction composition is as follows: 0.4Mol / L of CEM1 (reference example 1, CAS#: 114155-16-7), and 1.2Mol / L of ASM9, the general formula is:

[0445]

[0446] Among them, R is a heptyl group: n-C 7 h 15 .

[0447] This compound was synthesized by the method described in Example 9 below.

[0448] The fluidizer used to dissolve these two compounds is 1,2-dichlorobenzene, CAS#95-50-1, available from TCI-Chemicals and identified by the acronym 12ClPh.

[0449] Seawater is water with a high salinity of 180g / L (ie 5.6Mol / L), composed of sodium, potassium, calcium, magnesium and chloride ions in the proportions shown in Table II below. In order to approximate the operating conditions, the brine to be treated was contacted with three relative volumes of the extraction composition.

[0450] The concentration (mMol / L) of each ion in water before and after each of the four extraction steps performed...

Embodiment 3

[0454] Example 3: Extraction of a monosalt brine solution with CEM2 at room temperature

[0455] This Example 3 was carried out under the same conditions as Example 1, except that CEM1 was replaced with CEM2.

[0456] The CEM used was 4-tert-butyl-calix[6]arene phenprotin (N,N-diethylacetamide (CAS# for CEM2: 111786-95-9)).

[0457] According to the synthesis procedure described in the publication "Selective Complexation and Membrane Transport of Guanidinium Salts by Calix [6] arene Amides, Israel J. Chem, 1992,32,79-87", it was obtained from 4-tert-butyl calix[ 6] Aromatic hydrocarbon formula C 66 h 84 o 6Synthesized in China, CAS# is 78092-53-2, purchased from TCI Chemicals company.

[0458]

[0459] The ASM used is ASM2, CAS#32707-89-4, C 9 h 6 f 6 O, MW = 244.13 g / mol, a white solid, available from several distributors.

[0460]

[0461] After carrying out the extraction (repeated) of these 7 kinds of specific salts, under room temperature and equal volume ...

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Abstract

A temperature-regenerated hydrophobic liquid composition comprising an extracting molecule of a non-alkaline cationic species, a solvating molecule of a complimentary anionic species and a fluidizingagent, wherein said composition is characterized in that the extracting molecule of a non-alkaline cationic species is a macrocycle of which the ring is formed from 24 to 32 carbon atoms and has the following formula (I) or (II): wherein -n is an integer ranging from 5 to 8, -p is 1 or 2, -m is 3 or 4, -q and t, which may be identical or different, are 0, 1 or 2, -R is a tert-butyl, tert-octyl, O-methyl, O-ethyl, O-propyl, O-isopropyl, O-butyl, O-isobutyl, O-pentyl, O-hexyl, O-heptyl, O-octyl, or OCH2Phenyl group or a hydrogen atom, and - R' and R'', which may be identical or different, are chosen from the group made up of methyl, ethyl, propyl, isopropyl, butyl, isobutyl, heptyl and octyl groups or R' and R'' together form a pyrrolidine, piperidine or morpholine ring.

Description

technical field [0001] The invention relates to the ion extraction technology of salt, in particular to the ion extraction technology of hydrophilic salt suitable for processing industrial or natural brine. Background technique [0002] Mining, petroleum or industrial activities can generate highly saline, heavily scaled and / or toxic metal-contaminated wastewater that needs to be treated before being released into the environment or even reused in industrial processes. In both cases, today's manufacturers have only very expensive solutions that are either very good or not suitable for their particular environment. [0003] There are also cases, particularly with highly scaled brines that contain high amounts of alkaline earth cations and / or contain trace metals, for which there is currently no technology to treat these waters sustainably and / or economically, and thus have to be disposed of while awaiting a solution stored in sedimentation tanks. [0004] With water mixture...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D11/04B01J45/00C02F1/68C02F5/10C22B3/38
CPCC02F1/683C02F5/10C22B3/44B01D11/0457B01D11/0492Y02P10/20C22B3/381B01J45/00C02F2103/10C02F2209/02C02F2301/02C02F2103/365C02F2101/10
Inventor 纪尧姆·德索萨杰基·普埃塞尔巴斯琴·道特里奇
Owner ADIONICS