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High-mixing type continuous rotary reactor and method for preparing aluminum salt lithium adsorbent by using high-mixing type continuous rotary reactor

A rotary reactor, high-mixing technology, applied in chemical/physical/physical-chemical stationary reactors, chemical instruments and methods, adsorbed water/sewage treatment, etc., can solve problems such as fluid turbulence limitation and insufficient micro-mixing , to achieve the effect of stable properties, good lithium adsorption performance and low energy consumption

Pending Publication Date: 2022-08-02
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the above-mentioned problems in the prior art, the present invention provides a high-mixing continuous rotary reactor, which is used to replace the traditional reaction kettle, and to prepare aluminum salt lithium adsorbent by co-precipitation method, so as to realize the limitation of co-precipitation reaction space And provide a high-speed rotating reaction process, which solves the problems of insufficient micro-mixing and fluid turbulence limitation, and realizes the preparation of high-uniformity aluminum salt lithium adsorbent

Method used

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  • High-mixing type continuous rotary reactor and method for preparing aluminum salt lithium adsorbent by using high-mixing type continuous rotary reactor
  • High-mixing type continuous rotary reactor and method for preparing aluminum salt lithium adsorbent by using high-mixing type continuous rotary reactor
  • High-mixing type continuous rotary reactor and method for preparing aluminum salt lithium adsorbent by using high-mixing type continuous rotary reactor

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0047] The first step, preparation of lithium-aluminum mixed solution and lye

[0048] Aluminum chloride (56 g, 0.42 mol) and lithium chloride (7 g, 0.16 mol) were dissolved in 500 mL of deionized water with Al 3+ The concentration is 0.84mol / L, Li + The concentration is 0.33mol / L. The solution was placed on a heating and stirring table and stirred for half an hour, and then sonicated for 60 min in an ultrasonic apparatus at 75° C. to ensure adequate mixing and uniformity to obtain a lithium-aluminum mixed solution.

[0049] Place 320g of sodium hydroxide in 1L of deionized water to prepare 8M sodium hydroxide lye.

[0050] The second step is to mix the reaction

[0051] The 8M sodium hydroxide lye solution passes through the first feeding port 31 and the second feeding port respectively with the feed flow rate of 10.5mL / min and the lithium-aluminum mixed solution with the feed flow rate of 30mL / min under the action of the peristaltic pumps 201 and 301. 32 is pumped into t...

example 2

[0057] In this example, the steps of "preparation of lithium-aluminum mixed solution and alkali solution" are exactly the same as in Example 1.

[0058] The second step is to mix the reaction

[0059] The 8M sodium hydroxide lye solution passes through the first feeding port 31 and the second feeding port respectively with the feed flow rate of 14.5mL / min and the lithium-aluminum mixed solution with the feed flow rate of 45mL / min under the action of the peristaltic pumps 201 and 301. 32 is pumped into the high-mix continuous rotary reactor 100, the temperature of the reaction process is controlled at 20 ° C, the reaction gap is 0.2 mm, and the rotational speed of the high-mix continuous rotary reactor is controlled to 2000 rpm. An organic dispersion solution with a mass fraction of 2% polyvinyl alcohol was added, and 10 minutes after injection, the pH value of the effluent at the outlet was monitored by a pH meter, the pH value of the effluent was controlled to be 5, and the e...

example 3

[0065] In this example, the steps of "preparation of lithium-aluminum mixed solution and alkali solution" are exactly the same as in Example 1.

[0066] The second step is to mix the reaction

[0067] The 8M sodium hydroxide lye solution passes through the first feed port 31 and the second feed port 32 respectively with the feed flow rate of 18mL / min and the lithium-aluminum mixed solution under the action of the peristaltic pumps 201 and 301 with the feed flow rate of 60mL / min. Pump into the high-mix continuous rotary reactor 100, the temperature of the reaction process is controlled at 20 ° C, the reaction gap is 0.2mm, the speed of the high-mix continuous rotary reactor is controlled to 3000 rpm, and added from any feed port in the reaction space. For an organic dispersion solution with a mass fraction of 3% polyacrylamide, 10 min after injection, use a pH meter to monitor the pH value of the effluent at the outlet, control the pH value of the effluent to 5, and collect the...

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Abstract

The invention discloses a high-mixing type continuous rotating reactor, which comprises a shell, a high-mixing type continuous rotating reactor and a high-mixing type continuous rotating reactor, wherein a containing cavity is limited in the shell, and the shell is used as a stator; the rotor is arranged in the containing cavity, the shape of the rotor is matched with the shape of the containing cavity, and a reaction gap is formed between the outer surface of the rotor and the surface of the containing cavity in a spaced mode; the at least one feeding hole is communicated with the reaction gap; the at least one sampling port is communicated with the reaction gap; the gasket placing position is arranged between the shell and the rotor and is used for placing a gasket with a certain thickness, and the reaction gap can be adjusted by adjusting the thickness of a single gasket or selecting the number of the gaskets. The invention also relates to a method for preparing the aluminum salt lithium adsorbent by using the high-mixing continuous rotary reactor.

Description

technical field [0001] The invention belongs to the field of mixed reactors, in particular to a high-mixed continuous rotary reactor. The invention also relates to a method for preparing an aluminum salt lithium adsorbent using a high-mix continuous rotary reactor. Background technique [0002] At present, with the development of portable lithium batteries and electric vehicles, the demand for lithium resources is increasing day by day. Most of my country's lithium resources exist in salt lake brine. Due to the high ratio of magnesium to lithium in salt lake brine in my country, it has created a huge obstacle to the separation and processing of lithium resources, which has seriously affected the development and utilization of salt lake resources in my country. [0003] In the prior art, traditional methods for separation and extraction of lithium resources include precipitation method, solvent extraction method, membrane separation method and adsorption method. Among them...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/18B01J4/00B01J19/00B01J20/26B01J20/28B01J20/30C02F1/28
CPCB01J19/18B01J4/001B01J19/0053B01J20/26B01J20/28085C02F1/285Y02P10/20
Inventor 林森潘亚男陈君于建国
Owner EAST CHINA UNIV OF SCI & TECH
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