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Flowing type high-temperature high-pressure solubility online measuring device and measuring method thereof

A high-temperature, high-pressure, measuring device technology, applied in thermal excitation analysis, material resistance, material excitation analysis, etc., to achieve accurate and reliable data, promote sufficient deposition, and facilitate data collection

Inactive Publication Date: 2020-09-04
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to obtain the basic data of phase equilibrium research, experimental equipment capable of measuring phase equilibrium data under the condition of high temperature and high pressure is indispensable. However, there are few domestic researches on the phase equilibrium of inorganic salts and water.

Method used

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  • Flowing type high-temperature high-pressure solubility online measuring device and measuring method thereof
  • Flowing type high-temperature high-pressure solubility online measuring device and measuring method thereof
  • Flowing type high-temperature high-pressure solubility online measuring device and measuring method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] (1) Fill the pre-prepared sodium sulfate solution (the molar concentration of sodium sulfate is 0.5 mol / L) in the raw material solution reagent bottle 1 .

[0057] (2) extract sodium sulfate solution with feed pump 3, feed rate is 4-5mL / min, solution is sent in the equilibrium kettle 10; After the solution stays in the equilibrium kettle 10 for a long enough time, it flows out through the sampling system; Adjust the back pressure valve 4 to increase the pressure of the balance kettle 10 to the equilibrium pressure (18-26MPa) set in the experiment, and heat the balance kettle 10 to the equilibrium temperature (643.15-723.15K) set in the experiment. When the temperature fluctuation of the system does not exceed ±1K, when the pressure fluctuation does not exceed ±0.1MPa, continue to balance for a period of time; observe the conductivity value of the solution in real time through the high-voltage conductivity detection cell 16 .

[0058] (3) When the conductivity of the sam...

Embodiment 2

[0064] (1) Fill the pre-prepared potassium sulfate solution (the molar concentration of potassium sulfate is 0.5 mol / L) in the raw material solution reagent bottle 1 .

[0065] (2) extract potassium sulfate solution with feed pump 3, and feed rate is 4-5mL / min, and solution is sent in the equilibrium kettle 10; After the solution stays in the equilibrium kettle 10 for a long enough time, it flows out through the sampling system; Adjust the back pressure valve 4 to increase the pressure of the balance kettle 10 to the equilibrium pressure (18-26MPa) set in the experiment, and heat the balance kettle 10 to the equilibrium temperature (633.15-723.15K) set in the experiment. When the temperature fluctuation of the system does not exceed ±1K, when the pressure fluctuation does not exceed ±0.1MPa, continue to balance for a period of time; observe the conductivity value of the solution in real time through the high-voltage conductivity detection cell 16 .

[0066](3) When the conduct...

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Abstract

The invention discloses a flowing type high-temperature high-pressure solubility online measuring device and a measuring method thereof. The system comprises a feeding system, a balance kettle, a sampling system and a pressure control system. A Hastelloy C276 material is adopted as the balance kettle body so that the balance kettle body can resist a high temperature of 823K and a high pressure of35MPa, and a stable phase balance state can be obtained in a relatively large temperature and pressure range; the reasonable feeding system ensures that reagents entering the balance kettle are consistent in composition and are uniformly mixed; a precise temperature and pressure control system and a mechanical stirring device ensure that a fluid phase in the balance kettle is fully balanced; the reasonable sampling system ensures that the phase balance of the flow system is not influenced in the sampling process, the high-voltage conductivity detection pool can detect the conductivity of the sample on line, and the solubility data of the fluid is further obtained.

Description

technical field [0001] The invention relates to the technical field of solubility measurement, in particular to a flow-type high temperature and high pressure online solubility measurement device and a measurement method thereof. Background technique [0002] In my country's energy structure, coal is still one of the main energy sources for a relatively long period of time. Coking wastewater is organic wastewater generated during the process of coal coke, gas purification and recovery of coking products, containing a large number of compounds (such as thiocyanate, chloride salt, sulfate, ammonium salt, phenols, polycyclic aromatic hydrocarbons, etc.), is It is one of the most toxic industrial wastewater that must be treated before discharge, accounting for about 2% of the total industrial wastewater discharge in the country. Supercritical Water Oxidation (SCWO), as an efficient green chemical technology, is suitable for treating stubborn wastes such as aromatic hydrocarbons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/10G01N21/73
CPCG01N21/73G01N27/10
Inventor 方涛刘博丁鑫姜召王斌王玉琪
Owner XI AN JIAOTONG UNIV
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