Low-temperature prepn process of degradable efficient oil absorbent

An oil-absorbing agent, high-efficiency technology, applied in the field of degradable new high-efficiency oil-absorbing agent, low temperature preparation, can solve the problems of not being effectively used, no bagasse, high cost, etc., achieving low production cost, reducing production environment pollution, and low cost Effect

Inactive Publication Date: 2003-05-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country is a country with a lack of forest resources, and the cost of producing high-efficiency oil-absorbing agents from wood fibers is very high, but at the same time, my country is also a large agricultural country, and the resources of agricultural waste (such as bagasse) are very rich. Most of them are not effectively used, resulting in a great waste of resources
So far, there is no technology to use bagasse for the preparation of oil absorbents
In addition, the United Kingdom and Japan use wood cellulose to produce high-efficiency oil-absorbing agents through chemical modification, both of which are carried out under high temperature conditions (≥120 ° C), and there are no reports and technologies for this chemical modification reaction at relatively low temperatures.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Bagasse is placed in a stainless steel reactor, acetic anhydride is added according to a mass ratio of 1: 1.5, and then N-bromosuccinimide of 1% acetic anhydride quality is added, the reaction temperature is 50 ° C, and the reaction time is 24 hours, and then The reactants are separated by net filtration, and a degradable new high-efficiency oil-absorbing agent is obtained. The acetic anhydride in the remaining liquid phase can be recovered by means of concentration, and then added to the reactor for continuous recycling.

[0016] The water content of bagasse is generally controlled below 4%, and the length is controlled at 2-20cm; the water content of acetic anhydride is generally controlled below 2%, and the acetic acid content is generally controlled below 10%.

Embodiment 2

[0018] Bagasse is placed in a stainless steel reactor, acetic anhydride is added according to a mass ratio of 1: 1.5, and then N-bromosuccinimide of 1% acetic anhydride quality is added, the reaction temperature is 80 ° C, and the reaction time is 3 hours, and then The reactants are separated by net filtration, and a degradable new high-efficiency oil-absorbing agent is obtained. The acetic anhydride in the remaining liquid phase can be recovered by means of concentration, and then added to the reactor for continuous recycling.

[0019] The water content of bagasse is generally controlled below 4%, and the length is controlled within 2-20cm; the water content of acetic anhydride is generally controlled below 2%, and the acetic acid content is generally controlled below 10%.

Embodiment 3

[0021] Bagasse is placed in a stainless steel reactor, acetic anhydride is added according to a mass ratio of 1: 2.0, and then N-bromosuccinimide of 1% acetic anhydride quality is added, the reaction temperature is 60 ° C, and the reaction time is 12 hours, and then The reactants are separated by net filtration, and a degradable new high-efficiency oil-absorbing agent is obtained. The acetic anhydride in the remaining liquid phase can be recovered by means of concentration, and then added to the reactor for continuous recycling.

[0022] The water content of bagasse is generally controlled below 4%, and the length is controlled within 2-20cm; the water content of acetic anhydride is generally controlled below 2%, and the acetic acid content is generally controlled below 10%.

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Abstract

The present invention relates to a low-temperature preparation process of degradable efficient oil absorbent. It is prepared through reaction of bagasse with acetic anhydride and N-bromo-succinimide in a reactor and the separation of reaction products. The process is simple and low in cost, and utilizes natural resource effectively. Needing no separation of organic solvent and residual product, the process has high yield and less environmental pollution. Compared wth prior production process, the process has decreased reaction temperature from 120 deg.c to 50-80 deg.c and this further reducesproduction cost. In addition, the low-cost catalyst is used, the product has high oil absorbing amount, the absorbed oil may be recovered via squeezing and the oil absorbent may be used repeatedly before natural degradation producing no environmental pollution.

Description

(1) Technical field [0001] The invention relates to the technical field of new materials, in particular to a low-temperature preparation method of a degradable novel high-efficiency oil-absorbing agent. (2) Background technology [0002] Traditional inorganic oil absorbents include perlite, vermiculite, clay and diatomaceous earth. At present, organic oil-absorbing agents (such as polypropylene and polyurethane foam) are widely used in industry, but these organic synthetic polymer oil-absorbing agents cannot be automatically degraded, so the products after oil absorption cause new pollution to the environment. The production of high-efficiency oil-absorbing agents by chemically modifying wood fibers is the latest oil-absorbing agent production technology, and only the Biocomposites Research Center of the University of Wales in the United Kingdom and Japan have mastered this technology in the world. my country is a country with a lack of forest resources, and the cost of pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C09K3/32
Inventor 孙润仓孙晓锋
Owner SOUTH CHINA UNIV OF TECH
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