Method for separating and extracting boron from boron-containing solution

A solution and raw material liquid technology, applied in ion exchange column/bed methods, chemical instruments and methods, ion exchange, etc., can solve the problems of high energy consumption, unreasonable technology and economy, and achieve comprehensive energy consumption reduction and improved feasibility. Effect

Active Publication Date: 2016-11-30
CHINA PETROCHEMICAL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, it is possible to separate and extract boric acid from the low-boron solution as a

Method used

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  • Method for separating and extracting boron from boron-containing solution
  • Method for separating and extracting boron from boron-containing solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] B 2 o 3 The boron-containing raw material solution with a concentration of 1000mg / L is treated by removing insolubles, that is, after impurity removal treatment, and flows through the ion exchange column I at a speed of 0.1BV / h, and the tail liquid is adsorbed for discharge. When the B in the adsorption tail liquid 2 o 3 Concentration drops to raw material solution B 2 o 3 When the concentration is 10%, stop the adsorption, use 1mol / L HCl eluent to elute the boron on the exchange column at a speed of 0.1BV / h, elute the boron in the exchange column, and collect B 2 o 3 The eluent with a concentration >20g / L is called a qualified eluent, and the qualified liquid is used to produce boric acid; collect B 2 o 3 The eluent with a concentration ≥ 20g / L ≤ 15g / L is called the primary eluent circulating fluid, which is used as the eluent after the exchange column II is saturated and adsorbed, and the collected B 2 o 3 The eluent with a content of 2 o 3 When the concentra...

Embodiment 2

[0024] B 2 o 3 The boron-containing raw material solution with a concentration of 1500mg / L is treated by removing insoluble matter, that is, after impurity removal treatment, it flows through the ion exchange column I at a speed of 0.5BV / h, and the tail liquid is adsorbed for discharge. 2 o 3 The concentration rises to B in the raw material solution 2 o 3 When the concentration is 5%, stop the adsorption, use 1mol / L HCl eluent to elute the boron on the exchange column at a speed of 0.5BV / h, elute the boron in the exchange column, and collect B 2 o 3 The eluent with a concentration >20g / L is called a qualified eluent, and the qualified liquid is used to produce boric acid; collect B 2 o 3 The eluent with a concentration ≥ 20g / L ≤ 15g / L is called the primary eluent circulating fluid, which is used as the eluent after the exchange column II is saturated and adsorbed, and the collected B 2 o 3 The eluent with a content of 2 o 3 When the concentration is less than 15g / L, u...

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Abstract

The invention relates to a method for separating and extracting boron from a boron-containing solution. The method comprises that a boron-containing raw material liquid flows through an ion exchange column to adsorb the boron in the raw material liquid to the exchange column, the tail liquid after the adsorbing is discharged, the ion exchange column is leached with a leaching liquid to leach out the boron on the exchange column after the adsorbing achieving a saturated state, the eluent with the B2O3 concentration of more than 20 g/L is collected as the raw material for evaporation production of boric acid, the eluent with the B2O3 concentration of more than or equal to 20 g/L and less than or equal to 15 g/L is collected as the leaching liquid of the subsequent boron saturation exchange column, the eluent with the B2O3 content of less than 15 g/L and the boron-containing raw material liquid are mixed, and the obtained mixture enters the exchange column again, wherein the leaching liquid comprises a dilute acid and the collected eluent with the B2O3 concentration of more than or equal to 20 g/L and less than or equal to 15 g/L during the previous boron saturation exchange column desorption process. According to the method of the present invention, the ion exchange technology is used to carry out multiple adsorption enrichment on the boron in the boron-containing solution to achieve the high concentration, such that the obtained material can be used as the raw material for the forced evaporation concentration production of the boric acid.

Description

technical field [0001] The invention relates to a method for separating and extracting boron in a boron-containing solution, in particular to an ion exchange method for separating, extracting and circularly enriching boron in a boron-containing solution. Background technique [0002] At present, the production of boric acid in my country mainly uses boron ore as raw material, and adopts the method of acid hydrolysis separation and extraction. Ion exchange technology is applied to the separation of boron. Its main purpose is not to produce boron products, but to separate boron as an impurity from the substance to be refined, so that the substance to be refined can achieve the effect of boron removal and refinement. [0003] my country has abundant geothermal water resources. At present, geothermal water is mainly used as water for heating and heating. After completing the function of heating and heating, if it is directly discharged, due to the high boron content in geotherma...

Claims

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Application Information

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IPC IPC(8): C01B35/10B01J47/02B01J49/00
Inventor 刘世良刘学峰陈磊崔士波李海民
Owner CHINA PETROCHEMICAL CORP
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