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Composition for on-line silicon meter detection, preparation method thereof and on-line silicon meter detection method

A detection method and composition technology, which are applied in the preparation of test samples, chemical method analysis, measurement devices, etc., can solve the problems of affecting the normal operation of silicon meters, high cost, and large consumption, so as to ensure normal operation, The effect of high accuracy and high solution cost

Inactive Publication Date: 2019-07-26
CHNA ENERGY INVESTMENT CORP LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a composition for on-line silicon meter detection and its preparation method, and an on-line silicon meter detection method, so as to solve the problem caused by the large amount of online silicon meter agent in thermal power plants and the untimely supply of manufacturers in the prior art. The problem of normal operation and high cost of the table

Method used

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  • Composition for on-line silicon meter detection, preparation method thereof and on-line silicon meter detection method

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preparation example Construction

[0023] According to another aspect, the present invention also provides a method for preparing the above-mentioned composition for on-line silicon meter detection, which includes the following steps: S1, add a part of water into a marked container according to the proportion, and use a dropper to pour concentrated sulfuric acid Add it dropwise into water; then cool the container to room temperature, then add ammonium molybdate, stir until dissolved, add another part of water to obtain an acidic ammonium molybdate solution, that is, the color developer; Add a part of water to the container, add oxalic acid under constant stirring, and then add another part of water until it dissolves to obtain an oxalic acid solution, that is, a masking agent; Add ferrous ammonium sulfate under the state until it dissolves, place the container in a cold water bath, add concentrated sulfuric acid to the water dropwise with a dropper, and after cooling to room temperature, add another part of wate...

Embodiment 1

[0029] This embodiment has prepared the on-line silicon meter detection composition, specifically as follows: Chromogenic agent acidic ammonium molybdate: add about 1500 milliliters of desalted water in the marked container, carefully add 90 milliliters of vitriol oil (H 2 SO 4 The content is 98%, the density is 1.84g / cm 3 ), and then put the container into a water bath to cool to room temperature, add 100 grams of ammonium molybdate, fully stir until completely dissolved, and finally settle to 2 liters with desalted water. Equivalent to acidic ammonium molybdate solution including ammonium molybdate with a concentration of 50g / L, 81.14g / L of H 2 SO 4 and the remainder of water.

[0030] Masking agent oxalic acid: Add about 1200 ml of demineralized water into a marked container, add 80 grams of oxalic acid with constant stirring until it is completely dissolved, then add demineralized water to dilute to 2 liters. The equivalent oxalic acid solution includes oxalic acid wit...

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Abstract

The invention provides a composition for on-line silicon meter detection, a preparation method thereof and an on-line silicon meter detection method. The composition for on-line silicon surface detection comprises a color developing agent, a masking agent and a reducing agent, wherein the color developing agent is an acidic ammonium molybdate solution which comprises ammonium molybdate with the concentration of 49.8-50.2 g / L, H2SO4 with the concentration of 79.5-81.2 g / L and the balance of water; the masking agent is an oxalic acid solution which comprises oxalic acid with the concentration of39.8-40.2 g / L and the balance of water; the reducing agent is a ferrous ammonium sulfate solution which comprises ferrous ammonium sulfate with the concentration of 19.8-20.2 g / L, H2SO4 with the concentration of 22.1-22.6 g / L and the balance of water. The composition is used for replacing an outsourcing medicament for on-line silicon meter detection, has higher accuracy, effectively solves the problem of high cost of the outsourcing medicament, can ensure the normal operation of the silicon meter, and improves the efficiency of water quality detection of a thermal power plant and the continuity of related production.

Description

technical field [0001] The invention relates to the technical field of chemical detection in thermal power plants, in particular to a composition for on-line silicon meter detection, a preparation method thereof, and an on-line silicon meter detection method. Background technique [0002] With the continuous development of thermal power plants, high-parameter, large-capacity units have become the mainstream of thermal power generation. The requirements for water vapor quality are becoming increasingly stringent, and the status and role of chemical supervision in thermal power plants have become increasingly prominent. The current situation of chemical supervision in thermal power plants is mainly based on online supervision, supplemented by manual comparison. The operation rate and qualification rate of chemical online instruments have become important indicators for evaluating the chemical supervision status of each thermal power plant. The performance of chemical on-line ...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N31/00
CPCG01N1/28G01N31/00
Inventor 贾敬仪萌徐媚伊长涛
Owner CHNA ENERGY INVESTMENT CORP LTD
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