Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Putamen pattern cellulose stainless steel powder compounded microballons and the preparation process thereof

A technology of stainless steel powder and composite microspheres, which is applied in the preparation methods of peptides, chemical instruments and methods, and other chemical processes, etc., can solve the problem of not developing a spherical expanded bed adsorption matrix, and achieve regular shape, increase matrix density, The effect of less environmental pollution

Inactive Publication Date: 2004-03-31
ZHEJIANG UNIV
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Both cellulose and stainless steel powder are very readily available industrial raw materials, so far, there is no report on the combination of the two to develop a spherical expanded bed adsorption matrix

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Putamen pattern cellulose stainless steel powder compounded microballons and the preparation process thereof
  • Putamen pattern cellulose stainless steel powder compounded microballons and the preparation process thereof
  • Putamen pattern cellulose stainless steel powder compounded microballons and the preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] The steps of the preparation method of core-shell cellulose / stainless steel powder composite microspheres are as follows:

[0022] 1) Prepare composite water phase

[0023] Mix stainless steel powder superfine particles and industrial cellulose xanthate viscose at a mass percentage of 5%-40% at room temperature, stir evenly, heat up to 25-35°C, and continue stirring for 30-45 minutes;

[0024] 2) Suspension heating and solidification into balls

[0025] Stop stirring, add oil dispersion phase and surfactant, then start stirring, suspend and disperse at 25-35°C for 30-60 minutes, heat up to 90-95°C, keep warm for 1.5-2 hours, the viscose solidifies to obtain microspheres;

[0026] 3) Regeneration of homogeneous microspheres

[0027] The solidified microspheres are filtered out from the oil phase, washed with 1 to 2 times the volume of benzene to remove the oil layer, and then regenerated with 2 to 3 times the volume of methanol, ethanol solution containing 30% acetic a...

Embodiment 1

[0037] Add 100g industrial viscose (containing cellulose 8.2g, CS 2 3g, NaOH6.2g, viscosity is 6800cSt) and 20g stainless steel powder, be warming up to 30 ℃ and stir for half an hour; Stop stirring, add 600mL by the mixed oil phase of pump oil and chlorobenzene preparation (pump oil: chlorobenzene=4: 1, Mass ratio), adjust the stirring speed to 650rpm, keep the speed constant, suspend and disperse at 30°C for 45 minutes, heat up to 90°C within 15 minutes, keep warm for 1.5 hours, and solidify to obtain yellow-white microspheres; filter the microspheres from the oil phase out, washed with 150mL of benzene for 1 hour, 200mL of methanol for 1 hour, 200mL of ethanol solution containing 30% acetic acid for 1 hour, washed with tap water three times, and wet sieved to obtain 42mL of white balls with a particle size between 60 and 200μm. , with a density of 1.2g / cm 3 .

Embodiment 2

[0039] Add 100g of the above-mentioned industrial viscose (composition is the same as Example 1) and 20g stainless steel powder in a 1-liter three-necked flask, heat up to 35°C and stir for half an hour; add 450mL of mixed oil phase prepared by pump oil and chlorobenzene (pump oil: chlorine Benzene=6:1, mass ratio) and 0.9g oleic acid, adjust the stirring speed to 600rpm, suspend and disperse for 1 hour at 35°C, heat up to 90°C within 15 minutes, keep warm for 1.5 hours, and solidify to obtain yellow-white microspheres; The balls are filtered out from the oil phase, washed with 200mL benzene for 1 hour, regenerated with 200mL methanol for 1 hour, and regenerated with 200mL 10% sulfuric acid solution for 1 hour, washed with tap water three times, and sieved in a wet state to obtain a particle size between 60 and 300 μm. 48mL of white balls with a density of 1.2g / cm 3 .

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Densityaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention disclosed a shell-type cellulose / stainless steel powder composite microball and its manufacturing method. Mixing superfine stainless steel powder with industrial cellulose xanthate gel, suspending the mixture in an oil phase and forming a water-in-oil suspension, pellets are formed after improving the temperature, obtaining microballs after filtering. The steps are as the follows:1) prepare a composite water phase, mix stainless steel powder with industrial cellulose xanthate gel; 2) heating and solidifying pellets, adding an oil phase and a surfactant, forming a reverse-phase suspension, pellets are formed after improving the temperature;3) regenerating and obtaining microballs, washing by an organic solvent, regenerating by an acid, and obtaining shell-type composite microballs;4) sieve and floatation by an expanding bed, sieving regenerated microballs and flotation by an expanding bed to a range of particle size. The composite microball medium is hydrophilic, could resist acids and bases. Expansion performance test shows that the microball could be a medium for expanding absorption.

Description

technical field [0001] The invention relates to a core-shell cellulose / stainless steel powder composite microsphere and a preparation method thereof. Background technique [0002] Expanded Bed Adsorption (EBA) technology is a new type of protein separation and purification technology developed in the 1990s, which can directly capture the target product from the fermentation broth or cell homogenate, collect solid-liquid separation, concentration and initial Purification in one operation unit can reduce the number of operation units, shorten the operation time, and save production costs. It is known as the first new unit operation that has appeared in recent decades and has been quickly obtained in the downstream processing of bioengineering. Wide range of applications. Expanded bed is a special case of fluidized bed. Based on the stable classification behavior of adsorbent in expanded bed, its theoretical plate number is much higher than that of or...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01D15/02B01J20/22B01J20/32C07K1/14
Inventor 林东强姚善泾缪志俊雷引林朱自强
Owner ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com