Device for preparing carbon-14 sample in water

A sample preparation and wide-mouth technology, applied in the field of carbon-14 sample preparation devices in water, can solve the problems of inconvenient cleaning of the reaction kettle, high failure rate of the prototype machine, inconvenient disassembly, etc., to achieve large market development value and prevent water sample backflow , the effect of reducing usage

Pending Publication Date: 2021-06-18
CNNC NUCLEAR POWER OPERATION MANAGEMENT
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Problems solved by technology

[0003] At present, the laboratory prototype often pumps the sludge at the bottom of the water sample; the prototype uses four peristaltic pumps to suck the reagent and needs a measuring cylinder to measure the volume of the reagent in advance, put it into the reagent bottle and suck the sample by the peristaltic pump; the whole reaction kettle is airtight Yes, it is very inconvenient to disassemble, which makes it inconvenient to clean the reactor; the prototype machine has a high failure rate and is unstable

Method used

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  • Device for preparing carbon-14 sample in water
  • Device for preparing carbon-14 sample in water

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Embodiment Construction

[0028] The device includes a water sample sampling unit, a reagent sampling unit, a nitrogen gas sampling unit, a Fenton reaction unit, a CO 2 The assembly and integration of different modular units such as the collection unit realizes the preparation of carbon-14 samples in water. Using persulfate and hydrogen peroxide as oxidants, using sulfuric acid to provide an acidic environment, using FeSO 4 Acts as a catalyst to convert carbon into carbon dioxide in a redox reaction that is absorbed by sodium hydroxide lye.

[0029] Such as figure 1 As shown, the device is designed to convert various forms of carbon in water into CO 2 The gas is absorbed by the lye under the nitrogen carrier, and the purpose of measuring carbon-14 in water has been achieved. The device mainly consists of 5 parts.

[0030] 1. Water sample injection unit: The water sample enters the reactor using a 2-4L / min centrifugal pump, and the water sample enters the pipeline through the sinker that prevents se...

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Abstract

The invention belongs to the field of environmental monitoring, and particularly relates to a device for preparing a carbon-14 sample in water. A Fenton reagent catalytic oxidation prototype machine adopts four peristaltic pumps to suck a reagent, the volume of the reagent needs to be measured in advance by a measuring cylinder, and the reagent is put into a reagent bottle and sucked by the peristaltic pumps for sample injection; the whole reaction kettle is closed and is very inconvenient to disassemble, so that the reaction kettle is inconvenient to clean; a prototype machine is high in failure rate and unstable. The device of the invention comprises a parallel reagent bottle, a diaphragm pump, a multi-position valve, a wide-mouth stirring type reaction kettle and a three-stage series absorption bottle, the parallel reagent bottle is connected with the diaphragm pump; and the wide-mouth stirring type reaction kettle is connected with the diaphragm pump through the multi-position valve. The device is used for detecting carbon-14 in water, is relatively simple and convenient, has certain popularization significance for nuclear power plants, and has great market development value.

Description

technical field [0001] The invention belongs to the field of environmental monitoring, and in particular relates to a carbon-14 sample preparation device in water. Background technique [0002] Fenton's reagent catalytic oxidation method is a H 2 o 2 as an oxidizing agent, with Fe 2+ It is an oxidation-reduction method of a catalyst. Due to the extremely strong oxidizing ability of Fenton's reagent (second only to fluorine), it can oxidize and reduce reducing substances in water to obtain stable chemical substances. This method has been widely used in the treatment process of refractory wastewater (including rubber washing wastewater, molasses alcohol wastewater, etc.), and the COD degradation effect is remarkable. [0003] At present, the laboratory prototype often pumps the sludge at the bottom of the water sample; the prototype uses four peristaltic pumps to suck the reagent and needs a measuring cylinder to measure the volume of the reagent in advance, put it into the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/00G01N1/14B01J19/18B01J4/00
CPCB01J4/001B01J4/008B01J19/18G01N1/14G01N31/005G01N2001/1418
Inventor 韩万春谷韶中高阳蒋佳宁朱震宇孙垭杰王容仁吴晓芬颜华
Owner CNNC NUCLEAR POWER OPERATION MANAGEMENT
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