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Determination method of hydrazinium mononitrate and hydroxylamine nitrate

A technology of hydroxylamine nitrate and determination method, which is applied in the direction of measuring device, color/spectral characteristic measurement, and material analysis through optical means, which can solve the problems of undisclosed operation steps and process parameters, and achieve the effect of simple analysis process

Inactive Publication Date: 2012-11-21
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In 2010, the "Annual Report of China Institute of Atomic Energy" disclosed the principle of the content method of hydrazine nitrate and hydroxylamine nitrate using near-infrared spectroscopy, but did not disclose its specific operation steps and process parameters

Method used

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  • Determination method of hydrazinium mononitrate and hydroxylamine nitrate
  • Determination method of hydrazinium mononitrate and hydroxylamine nitrate
  • Determination method of hydrazinium mononitrate and hydroxylamine nitrate

Examples

Experimental program
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Embodiment 1

[0019] (a) Preparation of modeling sample set:

[0020] A series of 20 modeling samples were prepared for specific analysis objects, as shown in Table 1. The sample composition includes hydrazine nitrate and hydroxylamine nitrate, and the concentration range is large enough.

[0021] serial number Concentration of hydrazine nitrate / (mol / L) Concentration of hydroxylamine nitrate / (mol / L) 1 0.05 0.20 2 0.10 0.40 3 0.15 0.60 4 0.20 0.80 5 0.25 1.00 6 0.30 0.15 7 0.35 0.35 8 0.40 0.55 9 0.45 0.75 10 0.50 0.95 11 0.55 0.10 12 0.60 0.30 13 0.65 0.50 14 0.70 0.70 15 0.75 0.90 16 0.80 0.05 17 0.85 0.25 18 0.90 0.45 19 0.95 0.65 20 1.00 0.85

[0022] According to the concentration and spectral characteristics of the sample components, the samples were divided into a calibration set and a verification set, and Nos. 5, 7, 9, 11, and 13 were selected as ...

Embodiment 2

[0035] Sample determination result in table 4 embodiment 2

[0036]

[0037] It can be seen from the table that the relative deviation of the measurement results with air as a reference is larger than that with water as a reference.

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Abstract

The invention belongs to the technical field of after treatment of nuclear fuel, and discloses a determination method of hydrazinium mononitrate and hydroxylamine nitrate. The method utilizes a near infrared spectrum method to determine the hydrazinium mononitrate and the hydroxylamine nitrate. The key points of the determination method are that the wavelength range is 1532nm-1656nm, the sweep integration time is 0.5-0.6ms, the optical path length is 2-3mm, and water or air is used as reference. The determination method disclosed by the invention has the characteristics of simpleness, high efficiency and capability of simultaneously determining the contents of the hydrazinium mononitrate and the hydroxylamine nitrate.

Description

technical field [0001] The invention belongs to the technical field of nuclear fuel post-processing, and in particular relates to a method for determining hydrazine nitrate and hydroxylamine nitrate in nuclear fuel post-processing feed liquid. Background technique [0002] The Purex process includes a uranium and plutonium co-decontamination cycle, a uranium purification cycle and a plutonium purification cycle. At present, in the plutonium purification cycle of the spent fuel reprocessing process in my country, the hydrazine nitrate-hydroxylamine nitrate system is usually used to reduce the plutonium from tetravalent to trivalent and enter the water phase, while the hexavalent uranium remains in the organic phase to achieve purification. Purification and enrichment of plutonium. [0003] In the plutonium purification cycle, in order to achieve the purpose of plutonium reduction and stripping, 2BX feed liquid is added to the 2B tank. The 2BX feed liquid is composed of reduci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/35G01N21/359
Inventor 吴继宗王玲李定明张丽华钱红娟
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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