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Preparation method of ceramic film organic mineral substance filter aid

A technology of organic minerals and filter aids, applied in separation methods, chemical instruments and methods, grease/oily substances/floating matter removal devices, etc., can solve the problems of secondary pollution, use limitations, etc. The effect of increasing permeation flux and increasing particle size

Active Publication Date: 2014-12-24
郭涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005]In actual filtration applications, in order to improve the membrane flux and membrane retention effect of the microfiltration process, it is sometimes necessary to add filter aids to the system, such as When ceramic membrane cross-flow microfiltration treats oilfield produced water, adding bentonite to the system makes the small oil droplets and solid suspended matter in the water form flocculated large particles, and then forms a hydrophilic dynamic layer on the membrane surface to prevent fine oil Droplets and suspended particles enter the membrane pores to cause pollution, thereby increasing the membrane flux; Jeffrey Mueller et al. also found that adding suspended solids to the feed will increase the stable flux value when the cross-flow microfiltration is used to treat oily wastewater. During the process, water vapor enters the air, causing secondary pollution, and the use is limited

Method used

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  • Preparation method of ceramic film organic mineral substance filter aid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Weigh the average particle size about 1 μ 100kg of bentonite of m, add 600kg of water, stir in a stirrer (speed 600r / min) for 5 minutes, then add 5kg of hydrochloric acid with a mass concentration of 15%, and continue stirring for 30 minutes.

[0026] (2) Settling the above slurry for 40 minutes, then filter to remove blocky impurities, and then separate and purify the filtered suspension with a centrifuge (rotating speed 2200r / min).

[0027] (3) The clear liquid after purification by centrifuge 0 Boil to dry at C, grind the dried mineral solids and pass through a 400 mesh sieve.

[0028] (4) Then add 500 kg of water to the resulting powder, and then add 5 kg of sodium carbonate solution with a mass concentration of 20% and continue stirring (rotating speed 600r / min) for 1 hour.

[0029] (5) Then add 100kg of cetyltrimethylammonium bromide (CTMAB) solution with a mass concentration of 10%, and the temperature is between 40-50 0 C agitate (speed 600r / min) to react for 2 hours...

Embodiment 2

[0032] (1) Weigh the average particle size about 1 μ 100 kg of kaolin, add 800 kg of water, stir in a mixer (speed 600r / min) for 10 minutes, then add 8 kg of hydrochloric acid with a mass concentration of 20%, and continue stirring for 50 minutes.

[0033] (2) Settling the above slurry for 30 minutes, then filter to remove block impurities, and then purify the filtered suspension with a centrifuge (rotating speed 2200r / min).

[0034] (3) The clear liquid after purification by the centrifuge is at 70 0 Boil to dry at C, grind the dried mineral solids and pass through a 400 mesh sieve.

[0035] (4) Then add 500kg of water to the resulting powder, and then add 8kg of sodium carbonate solution with a mass concentration of 10% and continue stirring (rotating speed 600r / min) for 1 hour.

[0036] (5) Then add 120kg of cetyltrimethylammonium bromide (CTMAB) solution with a mass concentration of 8%, and the temperature is between 40-50 0 C agitate (speed 600r / min) to react for 2 hours, filter w...

Embodiment 3

[0039] (1) Weigh the average particle size about 1 μ Add 100kg of attapulgite clay to 100kg, add 500kg of water, and stir in a mixer (speed 600r / min) for 5 minutes, then add 4kg of hydrochloric acid with a mass concentration of 10%, and continue stirring for 20 minutes.

[0040] (2) Settling the above slurry for 60 minutes, then filter to remove blocky impurities, and then purify the filtered suspension with a centrifuge (rotating speed 2200r / min).

[0041] (3) The clear liquid after purification by centrifuge 0 Boil to dry at C, grind the dried mineral solids and pass through a 400 mesh sieve.

[0042] (4) Then add 500kg of water to the resulting powder, and then add 4kg of sodium carbonate solution with a mass concentration of 30% and continue stirring (rotating speed 600r / min) for 1 hour.

[0043] (5) Then add 80kg of cetyltrimethylammonium bromide (CTMAB) solution with a mass concentration of 12%, and the temperature is between 40-50 0 C agitate (speed 600r / min) to react for 2 hour...

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Abstract

The invention discloses a preparation method of a ceramic film organic mineral substance filter aid. The preparation method comprises the following steps of: (1) adding water into raw ores, and mixing, agitating and acidifying to obtain a slurry solution; (2) depositing the slurry solution, filtering, and centrifuging, separating and purifying a filtered suspension solution; (3) drying-out purified clean liquid at 60-900 DEG C, milling, and sieving by a 400-mesh sieve; (4) adding water into sieved powder for alkalizing; (5) adding a cetyl trimethyl ammonium bromide solution to obtain a mixture, agitating the mixture and reacting the mixture at 40-500 DEG C, filtering, washing by the water, then washing by ethanol, and centrifuging and separating; and (6) drying a filtering cake obtained after centrifuging at 800 DEG C, milling, sieving by the 400-mesh sieve and packaging. According to the preparation method disclosed by the invention, when an emulsified oil wastewater cross flow is subjected to micro- filtration, the organic mineral substance filter aid is added to effectively improve the film flux of a ceramic film and the stable flux can be increased to about 235L / (m<2>*h) as the organic mineral substance filter aid is adopted from about 180L / (m<2>*h) in the direct micro-filtration, and can be improved by 30%.

Description

technical field [0001] The invention relates to a preparation method of a ceramic membrane organic mineral filter aid. Background technique [0002] Emulsified oil (oil-water emulsion) is widely used for the lubrication and cooling of tools and workpieces in the process of metal machining. It is easy to be mixed with metal debris and bacteria during use, so the service life is very short. This type of wastewater mainly includes metal cutting fluid, metal cleaning fluid, cold rolling fluid, etc., and is characterized in that the oil is in an emulsified state, and the particle diameter is usually less than 3 mu m, the pH is alkaline, and the concentration of oil is high, requiring regular treatment. Especially for cutting oil, the general method is not easy to deal with. Although the ceramic microfiltration membrane has a good retention effect, it is still difficult to achieve the ideal treatment effect for high-concentration oil and water. [0003] Clay minerals are import...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D37/02B01J20/22B01J20/30C02F1/40C02F1/44C02F1/28
Inventor 郭涛
Owner 郭涛