Ceramic dielectric sensor and preparation method thereof used for detecting relative volume concentration of methanol gasoline

A technology of ceramic medium and methanol gasoline, which is applied in the field of sensors, can solve the problems of unsuitable on-line detection, complicated detection methods, and low quality of methanol, and achieve the effects of low energy consumption and preparation cost, fast response-recovery time, and high sensitivity

Inactive Publication Date: 2013-04-24
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the quality of methanol is low, and its calorific value is lower than that of gasoline. The demand for oxygen in the combustion process varies with the content of methanol. How to monitor the content of methanol in this mixed fuel in real time and match different air-fuel ratios , becomes a new topic
Among the methods for judging the content and proportion of methanol in gasoline, there are mainly dielectric constant, spectrophotometer method, surface acoustic wave device (SAW) method, photorefraction method and component analysis method, etc., but these methods have complex detection methods. , not suitable for online detection and other issues

Method used

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  • Ceramic dielectric sensor and preparation method thereof used for detecting relative volume concentration of methanol gasoline
  • Ceramic dielectric sensor and preparation method thereof used for detecting relative volume concentration of methanol gasoline
  • Ceramic dielectric sensor and preparation method thereof used for detecting relative volume concentration of methanol gasoline

Examples

Experimental program
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Effect test

Embodiment 1

[0025] 1) Weigh 100 grams of titanium dioxide, add it to a ball mill, wet grind it with water for 20 hours, dry it completely at a temperature of 100-120°C, pass through a 200-mesh sieve, and then calcinate it in an air sintering furnace at 1000°C for 2 hours according to a conventional sintering system , to synthesize TiO with rutile structure 2 Weigh 80 grams of titanium dioxide and 168 grams of magnesium carbonate, add them to a ball mill, use water as the grinding medium for wet grinding for 10 hours, dry them completely at a temperature of 100-120°C, and pass through a 200-mesh sieve. Afterwards, it was calcined at 1150 °C for 2 h in an air sintering furnace according to the conventional sintering system to synthesize Mg 2 TiO 4 Material.

[0026] 2) According to 0.8TiO 2 -0.2Mg 2 TiO 4 The material weighs the TiO of the rutile synthesized in the front (1). 2 Material 80g, Mg 2 TiO 4 Mix 20 grams of raw materials to form a composite powder, put into a ball mill, u...

Embodiment 2

[0031] The preparation process steps are the same as in Example 1, except that in step 1), the sintering temperature is 1150° C. for 2 h in an air sintering furnace to synthesize TiO with a rutile structure. 2 ; Calcined at 1200°C for 2 hours in an air sintering furnace to synthesize Mg 2 TiO 4 Material; take the TiO of rutile structure in step 2) 2 Material 50g, take Mg 2 TiO 4 50 grams of materials, mixed to form a composite powder; after the molded ceramic green body with the same size as in Example 1 is subjected to the debinding process, the sintering temperature is 1280 ° C under air conditions and sintered to form a ceramic medium; in step 5) In Table 1, the test results of different concentrations of methanol gasoline liquid capacitors are shown in Table 1.

Embodiment 3

[0033] The preparation process steps are the same as in Example 1, except that in step 1), the sintering temperature is 1200 ° C for 2 h in an air sintering furnace to synthesize TiO with a rutile structure. 2 ; Calcined at 1250°C for 2 hours in an air sintering furnace to synthesize Mg2 TiO 4 Material; take the TiO of rutile structure in step 2) 2 Material 50g, take Mg 2 TiO 4 80 grams of materials, mixed to form a composite powder; after the molded ceramic green body with the same size as in Example 1 is subjected to the debinding process, the sintering temperature is 1380 ° C under air conditions and sintered to form a ceramic medium; in step 5) The test results of different concentrations of methanol gasoline liquid capacitors are shown in Table 1.

[0034] Table 1 has listed the result that adopts ceramic dielectric sensor of the present invention to test different volume concentration methanol gasoline fuels as follows:

[0035]

[0036]

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Abstract

The invention discloses a ceramic dielectric sensor and a preparation method thereof used for detecting the relative volume concentration of methanol gasoline. The ceramic dielectric sensor comprises a tubular casing, ceramic dielectric tubular outer-ring electrodes arranged on two end covers inside the casing, and an inner-core electrode with holes in the rod-shaped center, wherein a ceramic dielectric material is composed of rutile-structured TiO2 and Mg2TiO4 according to a mass ratio. The preparation method of the ceramic dielectric sensor comprises the steps of: preparing the rutile-structured TiO2 and the Mg2TiO4; mixing the TiO2 and the Mg2TiO4, pressure-forming, static-pressure blank-forming and sintering into ceramic dielectric; coating an electrode paste on the ceramic dielectric, and sintering into a tubular or rod-shaped ceramic dielectric electrode; and arranging the ceramic dielectric electrode in the tubular casing to constitute the ceramic dielectric sensor. The ceramicdielectric sensor and the preparation method, disclosed by the invention, have the advantages of high sensitiveness, quick response and recovery time, good stability, reliable use and low preparationcost.

Description

technical field [0001] The invention relates to a ceramic medium sensor for detecting the relative volume concentration of methanol gasoline and a preparation method thereof, belonging to the technical field of sensors. Background technique [0002] With the development of society, on the one hand, the number of automobiles in our country continues to increase at this stage, and on the other hand, the world's oil resources are also facing an increasingly severe situation, which makes the contradiction between supply and demand of fuel oil in our country increasingly aggravated. In 2010, my country's dependence on foreign oil was close to 55%. Seeking a resource that can effectively replace petroleum and meet the energy demand and strategic needs of my country's economic construction has become one of the problems that our country urgently needs to solve. In view of the special national conditions of our country, which is more coal, less oil and less gas, and the development...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/22C04B35/46C04B35/462C04B35/622
Inventor 姚春德赵新峰季惠明耿鹏周玉贵
Owner TIANJIN UNIV
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