A kind of industrial production method of boron-10 acid and boron-11 acid

A technology of boric acid and calcium carbonate, which is applied in the direction of boron oxyacids and boron oxide compounds, can solve the problems of limiting the output of boron-10 acid, unfavorable industrial production, and the small amount of boron trifluoride-10 gas, etc., to achieve Simple and stable process, low cost and high reaction yield

Active Publication Date: 2017-11-24
浙江创世雷博科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method is easy to operate and low in cost, but the amount of boron trifluoride-10 gas added is small, and the volume ratio of boron trifluoride-10 to water is only 5-10:1, which severely limits the production of boron-10 acid. output, not conducive to industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1. Hydrolysis reaction:

[0040] 1. Add deionized water and calcium carbonate with a mass ratio of 1.5:1 into the reactor, start stirring, and after mixing evenly, heat to 75°C by electric heating or jacketed steam;

[0041] 2. Introduce boron trifluoride-10 gas or boron trifluoride-11 gas into the reaction kettle, and continue to stir, so that boron trifluoride-10 gas or boron trifluoride-11 gas is evenly dispersed in calcium carbonate and removed In the solid-liquid mixture of ionized water, when the volume ratio of boron trifluoride-10 gas or boron trifluoride-11 gas and calcium carbonate to the solid-liquid mixture of deionized water reaches 45:1, stop ventilation;

[0042] 3. The feed rate of boron trifluoride-10 gas or boron trifluoride-11 gas should make the residence time of boron trifluoride-10 gas or boron trifluoride-11 gas in the mixture 15 minutes;

[0043] 4. After reacting for 6 hours, keep the temperature of the reactor at 75°C, and perform suction filt...

Embodiment 2

[0049] 1. Hydrolysis reaction:

[0050] 1. Add deionized water and calcium carbonate with a mass ratio of 2.0:1 into the reactor, start stirring, and after mixing evenly, heat to 80°C by electric heating or jacketed steam;

[0051] 2. Introduce boron trifluoride-10 gas or boron trifluoride-11 gas into the reaction kettle, and continue to stir, so that boron trifluoride-10 gas or boron trifluoride-11 gas is evenly dispersed in calcium carbonate and removed In the solid-liquid mixture of ionized water, when the volume ratio of boron trifluoride-10 gas or boron trifluoride-11 gas and calcium carbonate to the solid-liquid mixture of deionized water reaches 50:1, stop ventilation;

[0052] 3. The feed rate of boron trifluoride-10 gas or boron trifluoride-11 gas should make the residence time of boron trifluoride-10 gas or boron trifluoride-11 gas in the mixture 25 minutes;

[0053] 4. After reacting for 10 hours, keep the temperature of the reactor at 80°C, and perform suction fil...

Embodiment 3

[0059] 1. Hydrolysis reaction:

[0060] 1. Add deionized water and calcium carbonate with a mass ratio of 2.5:1 into the reactor, start stirring, and after mixing evenly, heat to 85°C by electric heating or jacketed steam;

[0061] 2. Introduce boron trifluoride-10 gas or boron trifluoride-11 gas into the reaction kettle, and continue to stir, so that boron trifluoride-10 gas or boron trifluoride-11 gas is evenly dispersed in calcium carbonate and removed In the solid-liquid mixture of ionized water, when the volume ratio of boron trifluoride-10 gas or boron trifluoride-11 gas and calcium carbonate to the solid-liquid mixture of deionized water reaches 55:1, stop ventilation;

[0062] 3. The feed rate of boron trifluoride-10 gas or boron trifluoride-11 gas should make the residence time of boron trifluoride-10 gas or boron trifluoride-11 gas in the mixture 40 minutes;

[0063] 4. After reacting for 15 hours, keep the temperature of the reactor at 85°C, and perform suction fil...

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PUM

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Abstract

The invention relates to a method for industrially producing boron-10 acid and boron-11 acid from enriched boron-10 trifluoride and boron-11 trifluoride and solves the current problem that the boron-10 acid and the boron-11 acid are not good for industrial production. The method comprises the following steps: preparing a solid-liquid mixture of calcium carbonate and deionized water, heating the solid-liquid mixture, introducing boron-10 trifluoride or boron-11 trifluoride gas into a reaction kettle, and continuously stirring till the gas is uniformly dispersed in the solid-liquid mixture; performing suction filtration on the solid-liquid mixture; washing a filter cake by the deionized water, and mixing the washing solution with the mother solution; diluting the boric acid solution, rinsing and reducing the temperature, putting in a filter tank and continuously stirring; filtering the boric acid solution in the tank, reducing the temperature to room temperature and performing suction filtration again, putting the obtained boric acid solution into an evaporation tank to evaporate and condense, stopping dehydration when the solution is in a saturated mode, reducing the temperature, crystallizing, filtering and drying to obtain the boric acid crystal, namely boron-10 acid and boron-11 acid solid. The method is suitable for the industrial production.

Description

Technical field: [0001] The invention belongs to the field of chemical synthesis and separation, in particular to a method for industrially producing boron-10 acid and boron-11 acid by enriching boron trifluoride-10 and boron trifluoride-11. Background technique: [0002] Boron (B) has two stable isotopes: 10 B and 11 B, their abundance in nature is about 19.8% and 80.2%. Boron-10 ( 10 B) The ability to absorb neutrons is very strong, and it is widely used in nuclear power, military equipment, modern industry and medicine. Among them, enriched boron-10 acid is used as a good neutron absorber in the nuclear industry, and it has a very significant advantage over the naturally abundant boric acid: it can greatly increase the amount of energy in the reactor cooling system. 10 The concentration of B reduces the overall dosage of boric acid. Related research shows that, 10 The benefits brought by the increase in B concentration are: enhanced reactor capacity, increased use o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B35/10
CPCC01B35/1045
Inventor 刘小秦时天成王宏
Owner 浙江创世雷博科技有限公司
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