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Method and device for detecting high temperature high pressure oil coal slurry rheological characteristic

A technology for measuring devices and rheological properties, applied in flow properties, measuring devices, instruments, etc., can solve problems such as inability to guarantee measurement accuracy and the impact of falling columns, and achieve prevention of coal powder deposition, wide viscosity measurement range, and frictional resistance stable effect

Inactive Publication Date: 2011-02-16
CHINA COAL RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this viscometer can be used in high-temperature and high-pressure conditions, the coal liquefaction reaction is a three-phase reaction of gas, liquid and solid. During the reaction process, hydrogen is continuously filled in. The gas introduced will affect the drop of the falling column, and the measurement cannot be guaranteed. precision

Method used

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  • Method and device for detecting high temperature high pressure oil coal slurry rheological characteristic
  • Method and device for detecting high temperature high pressure oil coal slurry rheological characteristic
  • Method and device for detecting high temperature high pressure oil coal slurry rheological characteristic

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A method for measuring the rheological properties of high-temperature and high-pressure oil-coal slurry. The method includes the following steps:

[0029] First, coal powder (particle size <0.15mm), solvent (usually heavy oil produced by coal liquefaction), and catalyst (iron-based catalyst) are made into oil-coal at a ratio of 90g coal powder, 110g solvent and 2g catalyst Pour the slurry into the reaction kettle, press the flange cover tightly, adjust the concentricity and verticality of the torque measuring device;

[0030] Second, at room temperature, first purge with nitrogen, then purge with low-pressure hydrogen, and then slowly charge high-pressure hydrogen into the kettle to an operating pressure of 10.0~14.0MPa;

[0031] Third, start the micro-motor, start stirring at the set stirring speed, the speed of the stirrer is usually 50-800 rpm, and the torque measurement system is turned on at the same time to record the measured data;

[0032] Fourth, heat the reactor at th...

Embodiment 2

[0035] The ratio of the oil-coal slurry is 112.5g coal powder, 137.5g solvent, and 2.5g catalyst; the rest of the steps are the same as in Example 1.

Embodiment 3

[0037] The ratio of the oil-coal slurry is 135g coal powder, 165g solvent, and 3g catalyst; other steps are the same as in Example 1.

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Abstract

The mensuration device is composed of autoclave reactor, measuring torque system, and data processing system. The method considers influence on rheological behavior of coal oil mixture from parameters of reaction process such as heating rate, reaction temperature and reaction pressure etc, as well as self-characteristics of coal oil mixture such as thickness of coal slurry, coaly characteristic, categories and properties of solvent. Comparing with prior art, the invention possesses features of high antijamming capability, accurate and stable measured data, simple operation and easy of controletc.

Description

Technical field [0001] The invention relates to a method and a device for measuring the rheological characteristics of coal-oil slurry under high temperature and high pressure conditions. Specifically, it can measure the rheological characteristics of coal hydroliquefaction reaction material under coal liquefaction conditions. , Investigate the influence of reaction process parameters such as heating rate, reaction temperature and reaction pressure, and the characteristics of coal slurry itself, such as coal slurry concentration, coal quality characteristics, and solvent types and properties on the rheological properties of coal slurry. Background technique [0002] The sharp rise in world oil prices, oil consumption and the consumption of oil resources have forced the energy industry to consider alternatives that can replace petroleum fuels. Coal is one of the most abundant hydrocarbon resources on the earth. Coal can be converted into liquid fuel through hydrogenation reaction....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N11/14
Inventor 何平李克健章序文李文博霍卫东费利江赵鹏何建铧张帆陈颖
Owner CHINA COAL RES INST
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