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Method for intermittently producing deuterium depleted water through heavy-oxygen-enriched water separation device and device thereof

A separation device, ultra-light water technology, applied in chemical instruments and methods, heating water/sewage treatment, water, etc., can solve the problem that there is no method and device that can simultaneously obtain heavy oxygen water and ultra-light water with a specific concentration, and no use The problem of isotope separation device for continuous separation of heavy oxygen water and intermittent separation of ultra-light water at the same time

Active Publication Date: 2011-05-11
SHANGHAI RES INST OF CHEM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] At present, there are no reports at home and abroad on the use of isotope separation devices to simultaneously continuously separate heavy oxygen water and intermittently separate ultra-light water, and there is no method and device that can simultaneously obtain heavy oxygen water and ultra-light water with a specific concentration

Method used

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  • Method for intermittently producing deuterium depleted water through heavy-oxygen-enriched water separation device and device thereof
  • Method for intermittently producing deuterium depleted water through heavy-oxygen-enriched water separation device and device thereof
  • Method for intermittently producing deuterium depleted water through heavy-oxygen-enriched water separation device and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] Using natural water as the raw material, the deuterium abundance is 150ppm, and the flow rate of 250kg / hr enters the first-stage rectification tower. The operating reflux ratio of the first-stage rectification tower is 1, and the theoretical plate number of the heavy oxygen water separation device is 4000 pieces. , A=180±10, the liquid holding capacity of the separation device is 800kg, the operating pressure of the rectification towers at all levels is 120mmHg (absolute pressure), the temperature at the top of the tower is 50°C to 52°C, and the heavy oxygen water product at the bottom of the final rectification tower is collected The output is 5g / hr, and the oxygen-18 abundance is greater than 95% by weight.

[0093] The natural water added in the reflux liquid storage tank makes the total amount of material in the storage tank reach 1000kg, and then simultaneously stops the feeding of the first-stage rectification tower and the extraction at the top of the tower, and p...

Embodiment 2

[0095] Using natural water as the raw material, the deuterium abundance is 150ppm, and enters the first-stage rectification tower from the top of the tower at a flow rate of 250kg / hr. The theoretical plate number of the heavy oxygen water separation device is 4000 pieces, A=180±10, the separation device The liquid holding capacity is 400kg, the operating pressure of the rectification towers at all levels is 70mmHg (absolute pressure), the temperature at the top of the tower is 40℃~42℃, the output of heavy oxygen water product at the bottom of the last rectification tower is 2.8g / hr, and the oxygen- 18 abundance greater than 95%.

[0096] Add natural water into the reflux liquid storage tank to make the material volume in the storage tank reach 300kg, then stop the feeding and top extraction of the first-stage rectification tower at the same time, and change the first-stage rectification tower to total reflux operation , the condensate at the top of the first-stage rectificatio...

Embodiment 3

[0098] Using natural water as raw material, the deuterium abundance is 150ppm, and enters the first-stage rectification tower from the top of the tower at a flow rate of 500kg / hr. The theoretical plate number of the heavy oxygen water separation device is 2500, A=100±5, and the separation device The liquid holdup is 800kg, the operating pressure of the rectification towers at all levels is 120mmHg (absolute pressure), the temperature at the top of the tower is 50°C to 52°C, the output of heavy oxygen water products at the bottom of the final rectification tower is 4.7g / hr, and the oxygen- 18 abundance greater than 98%.

[0099] Add natural water into the reflux liquid storage tank to make the material volume in the storage tank reach 500kg, then stop the feeding and top extraction of the first-stage rectification tower at the same time, and change the first-stage rectification tower to total reflux operation , the condensate at the top of the first-stage rectification tower fl...

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Abstract

The invention provides a method for intermittently producing deuterium depleted water through heavy-oxygen-enriched water separation device, comprising the following steps: (a) providing natural water raw material (S0) which enters a cascaded rectifying apparatus (1) that is formed by connecting multi-stage rectification towers (T1)-(Tn), n being an integer from 3 to 10; and (b) carrying out the following steps to the natural water raw material (S0) in the cascaded rectifying apparatus (1): (i) carrying out cascading rectification in the multi-stage rectification towers (T1)-(Tn), carrying out partial reflow or reflow-free operation in the first stage rectification tower (T1) so as to obtain heavy-oxygen-enriched water product (S4) at the bottom of the last stage rectification tower (Tn); and (ii) carrying out full reflow operation in the first stage rectification tower (T1) so as to obtain heavy-oxygen-enriched water product (S3) of which the D abundance is between 0.2ppm and 125ppm at the top of the first stage rectification tower (T1) and obtain heavy-oxygen-enriched water product (S4) at the bottom of the last stage rectification tower (Tn). The invention also provides a device for intermittently producing deuterium depleted water through heavy-oxygen-enriched water separation device and use thereof. The invention can adopt an isotope separation device to simultaneously and continuously separate the heavy-oxygen-enriched water and the deuterium depleted water and can obtain the heavy-oxygen-enriched water having specified concentration and the deuterium depleted water having specified concentration according to requirement.

Description

technical field [0001] The invention relates to the technical field of stable isotope separation, and more particularly relates to an isotope separation device capable of intermittently producing ultralight water while continuously producing heavy oxygen water and a separation method using the device. Background technique [0002] Water molecules in nature are composed of 2 hydrogen atoms and 1 oxygen atom (H 2 O), hydrogen elements have protium ( 1 H), deuterium ( 2 H is D) two stable isotopes and tritium ( 3 H is T) a radioactive isotope, the natural abundance is 99.985%, 0.015% (150ppm), respectively, and the natural abundance of tritium is extremely low, less than one part per billion; the oxygen element has oxygen-16 ( 16 O), oxygen-17 ( 17 O), oxygen-18 ( 18 O) The natural abundances of three stable isotopes are 99.76%, 0.04%, and 0.2%, respectively. A variety of stable isotope water molecules can be composed of two hydrogen atoms and one oxygen atom, and they ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B5/00C02F1/04
Inventor 张丽雅秦川江陈大昌周建跃肖斌李猷姜永悦刘严
Owner SHANGHAI RES INST OF CHEM IND
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