On-line testing method for PH value of bypass supercritical water oxidation environment and private apparatus thereof

A technology of supercritical water oxidation and online testing, which is applied in the field of corrosion online monitoring, can solve problems such as the inability to guarantee the high-pressure conditions of the SCWO test environment, and achieve stable work, wide application range, and rapid results

Inactive Publication Date: 2004-01-14
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

However, if it is applied to the SCWO test environment, the common Ag / AgCl reference electrode can meet the high temperature use conditions, but cannot guarantee the high pressure use conditions of the SCWO test environment

Method used

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  • On-line testing method for PH value of bypass supercritical water oxidation environment and private apparatus thereof
  • On-line testing method for PH value of bypass supercritical water oxidation environment and private apparatus thereof
  • On-line testing method for PH value of bypass supercritical water oxidation environment and private apparatus thereof

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Embodiment Construction

[0045] The structure and principle of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0046] Such as figure 2 As shown, the special equipment of the present invention is mainly composed of a supercritical water oxidation electrochemical cell with a main inlet and a main outlet, a pH value sensor and a reference electrode for on-line monitoring of the supercritical water oxidation reaction environment, wherein: the electrochemical cell 1. The body of the cell is an autoclave structure. The main entrance connected to the cavity of the autoclave is connected to the measuring pipeline through the pipe joint 3 and the high pressure valve 2 in turn. The pH value sensor 9 and the reference electrode 6 are respectively installed adjacent to the cell body of the electrochemical cell 1. The main inlet and main outlet are connected to the autoclave cavity, and the waste liquid tank 7 is communicated with the main outlet of...

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Abstract

The invention discloses a by-passage super critical water oxidation environment pH value online measuring method and dedicated apparatus thereof characterized by that, filling a standard solution into the electrochemical cell through a pH sensor, filling a reference solution into the electrochemical pool through a reference electrode, obtaining the electrode potential E1 of the pH value sensor in relative to the reference electrode, filling another standard solution into the electrochemical cell through the pH sensor, obtaining the electrode potential E2 of the pH value sensor in relative to the reference electrode in the same manner, stopping the filling of the standard solution, filling the test solution into the electrochemical cell, at the same time filling the reference solution into the reference electrode, obtaining the electrode potential test of the pH value sensor in the test solution environment in relative to the reference electrode, obtaining the pH-test value of the measured solution according to the high temperature calculating formula.

Description

technical field [0001] The invention relates to an on-line corrosion monitoring technology, in particular to an on-line test method for the pH value of a bypass supercritical water oxidation environment and special equipment thereof. Background technique [0002] With the rapid development of modern society, the discharge of industrial waste and urban waste is increasing year by year, and the problem of environmental pollution worldwide has attracted more and more attention. extensive research. [0003] Supercritical Water Oxidation (Super-critical Water Oxidation), referred to as SCWO technology, is currently a research hotspot in waste treatment technology worldwide (Document 1: Tester J.W., Cline J.A., Corrosion, 1999, 55(11): 1088). It utilizes water in a supercritical state and oxygen dissolved in it to undergo strong oxidation and hydrolysis with organic waste, and within a reaction residence time of less than 1 minute, more than 99.99% of the structure of toxic organ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/26G01N27/30
Inventor 张丽韩恩厚柯伟
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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