High concn. solid/water slurry and process for producing same

A manufacturing method and high-concentration technology, applied in liquid carbon-containing fuels, petroleum industry, fuels, etc., can solve problems that do not involve viscoelastic properties, high-concentration carbonaceous solid-water slurry manufacturing methods, etc.

Inactive Publication Date: 2000-07-12
NIPPON SHOKUBAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the use of (meth)acrylic polymers as additives for high-concentration carbonaceous solid-water slurries is disclosed in JP-A-63-113098 and JP-A-8-73872, etc., but none of these patent documents relate to this invention. Invented high-concentration carbonaceous solid-water slurry with viscoelastic properties and its manufacturing method

Method used

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  • High concn. solid/water slurry and process for producing same
  • High concn. solid/water slurry and process for producing same
  • High concn. solid/water slurry and process for producing same

Examples

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Effect test

Synthetic example 1

[0082] use Figure 6 The reactor shown (n·θm value of Re number 50: 150) was carried out. The reaction tank is a cylindrical vertical glass reactor with an inner diameter of 100 mm, a height of 170 mm, and a capacity of 1 liter, equipped with a thermometer, a stirrer, a gas introduction pipe, and a reflux cooler. The stirrer blades have a width of 75 mm and a height of 140 mm. Put 225 parts of water into the reaction tank, set the rotation speed of the stirrer blade at 250 rpm, replace the gas in the reaction tank with nitrogen under stirring, and heat to 95° C. in a nitrogen atmosphere. Then add the following substances to the reaction tank with a pump for 3 hours: 71.6 parts of phenoxy polyethylene glycol monoacrylate (the average addition mole number of ethylene oxide is 20) and 251.6 parts of acrylic acid and 103 parts of water a mixture of 7.6 parts of mercaptopropionic acid (as a chain transfer agent) and 53 parts of water; and a mixture of 8 parts of ammonium persulfa...

Synthetic example 2

[0084] use Figure 7 The reactor shown (n·θm value of Re number 50: 35) was carried out. The reaction tank is a cylindrical vertical glass reactor with an inner diameter of 100 mm, a height of 170 mm, and a capacity of 1 liter. It is equipped with a thermometer, a stirrer, a gas inlet pipe and a reflux cooler, and has two baffles inside. The agitator blade used has a lateral width of 54 mm, a height of 60 mm, a lateral width of the fins of 8 mm, a protruding length of 15 mm, and an overlapping length of 5 mm between the protruding fin and the lower agitator blade. The intersection angle with the lower agitator blade is 45°, the distance from the center of the shaft of the lower agitator blade to the bending point is 20mm, the bending angle is 45°, the rotation radius of the lower agitator blade is 30mm, and the height is 44mm. The distance between the lower end of the lower stirrer blade and the bottom of the tank is 4mm. Put 205 parts of water into the reaction tank, set th...

Synthetic example 3

[0086] use Figure 8 The reactor shown (n·θm value of Re number 50: 45) was carried out. The reaction tank is a cylindrical vertical glass reactor with an inner diameter of 100 mm, a height of 170 mm, and a capacity of 1 liter, equipped with a thermometer, a stirrer, a gas introduction pipe, and a reflux cooler. The width of the helical ribbon stirrer blades is 10mm, the pitch of the helical ribbon stirrer blades is 95mm, the frame width is 8mm, and the distance between the frames is 65mm. Put 200 parts of water into the reaction tank, set the rotation speed of the stirrer blade at 170 rpm, replace the gas in the reaction tank with nitrogen under stirring, and heat to 95° C. in a nitrogen atmosphere. Then add the following substances in the reaction tank with a pump in 3 hours respectively: by 71.6 parts of stearyloxy polyethylene glycol monoacrylate (the average added mole number of ethylene oxide is 25) and 139.3 parts of methacrylic acid and a mixture of 116.6 parts acryl...

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Abstract

A high-concentration solid / water slurry which has a high fluidity and excellent storability and transportation stability, and a process for producing the same. In the stress sweeping test for the determination of the dynamic viscoelasticity of this slurry, the maximum stress in a linear-elasticity region as determined at an oscillation frequency of 1 Hz is 0.3 to 10 Pa, and the strain of the slurry yielding the maximum stress in the linear-elasticity region is 2 % or higher. In the creep recovery test value determined in the linear elasticity region for the determination of the static viscoelasticity of the slurry, the elastic modulus of a Maxwell element analyzed by assuming a four-constant mechanical model based on Hookean elasticity and Newtonian viscosity is 8 to 70 Pa, and the elastic modulus of the Voigt element is 3 to 70 Pa.

Description

field of invention [0001] This invention relates to high-concentration solids-water slurries and methods for their manufacture, and more particularly to dispersing solid powders in water with high fluidity and good storage even at high concentrations of solids High concentration solids-water slurry with stability and transport stability and method for making same. Background of the invention [0002] Petroleum, which has been widely used as an energy source in the past, has seen its price increase significantly in recent years, and people are also worried about the depletion of petroleum resources. Therefore, the research and development of other energy sources with low prices and stable supply has become a top priority, and people have begun to re-evaluate the application of solid carbonaceous materials such as coal and petroleum coke. However, coal and petroleum coke are solid at room temperature, cannot be transported by pipelines, and are difficult to handle, and may ca...

Claims

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Application Information

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IPC IPC(8): C10L1/32
CPCC10L1/326
Inventor 田村俊雄林宪一郎薄井洋基佐伯隆
Owner NIPPON SHOKUBAI CO LTD
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