Method for measuring mixing effect of mixing equipment by measuring mixing uniformity of alcohol solution
A technology of mixing uniformity and mixing effect, which is applied in the field of measurement and can solve problems such as unified description and measurement of difficult mixing characteristics, large differences in flow resistance, and differences.
Active Publication Date: 2015-08-19
HANGZHOU DIANZI UNIV
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Problems solved by technology
[0007] In addition, due to the different densities of oil and water, oil-water stratification occurs in the fluid in the mixing equipment, which will cause a large difference between the experimental measurement results and the actual mixing process
And for different mixing equipment, the mixing of oil and water has different behavior characteristics, it is difficult to uniformly describe and measure the mixing characteristics
In addition, during the sampling process, due to the large difference in flow resistance between oil and water passing through relatively thin sampling tubes, it is bound to cause the water content of the sample to be greater than the actual local water content.
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[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0026] The method of measuring the mixing effect of the mixing equipment by measuring the mixing uniformity of the alcohol solution, the specific steps are as follows:
[0027] Step 1. Take the mixer whose mixing effect is to be tested, and set m small circles evenly distributed along the circumference on the same cross-section of the tube wall near the outlet of the mixer (the section of pipe between the vortex generator and the outlet). holes, m=12;
[0028] Step 2, the pure water is fed into the mixer at a constant initial flow rate, and at the same time, the absolute alcohol in the dosing box is added to the mixer at a constant initial flow rate through a peristaltic pump to form an aqueous alcohol solution;
[0029] Step 3, divide the cross section provided with small circular holes into m ring sector sampling areas equally, and the center of each...
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The invention discloses a method for measuring the mixing effect of mixing equipment by measuring the mixing uniformity of alcohol solution. The mixing features of different mixing equipment cannot be described and measured in a unified way. The method comprises the following steps: machining m small circular holes in the cross section of the pipe wall of a mixer to be measured near the outlet; feeding alcohol aqueous solution into the mixer; evenly dividing the cross section with the small circular holes into m fan-shaped sampling areas; dividing each fan-shaped sampling area into k fan-shaped sampling blocks; selecting a sampling point in each fan-shaped sampling block; measuring the alcohol relative density of each sampling point by a density meter; inversely calculating the alcohol concentration of each sampling point according to a mapping table of alcohol relative density and alcohol concentration of alcohol aqueous solution; measuring the flow velocity of each sampling point; and calculating the mixing uniformity of anhydrous alcohol and pure water at the cross section of the outlet. According to the invention, the mixing uniformity at the outlet of mixing equipment is calculated by measuring the mixing uniformity of alcohol solution, so that methods for measuring the mixing effect of different mixing equipment are unified.
Description
technical field [0001] The invention belongs to the technical field of measurement and relates to the detection of mixing effects of mixing equipment, in particular to a method for measuring the mixing effect of mixing equipment by measuring and calculating the mixing uniformity of alcohol solutions. Background technique [0002] Mixing equipment is commonly used in chemical, environmental, water treatment and other industrial fields. The quality of the mixing process directly affects the consumption of raw materials, chemicals, energy, etc. in subsequent processes and the final product quality. [0003] The degree of mixing is a measurement of the uniformity of dispersion and blending achieved by mixing different materials; in many industries, it is necessary to fully mix the mixture with the liquid to ensure that the subsequent process is carried out more effectively. [0004] To evaluate the mixing effect of mixing equipment, theoretically, it is necessary to determine th...
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IPC IPC(8): G01M99/00G01N9/36
Inventor 聂欣徐江荣谷王俞衡路一丁李萌蔚余辉江承成
Owner HANGZHOU DIANZI UNIV