CN103254591B - Vinasse/PBS (polybutylene succinate) composite material and preparation thereof - Google Patents

Abstract

The invention relates to a vinasse/PBS (polybutylene succinate) composite material and preparation thereof. The vinasse/PBS composite material is prepared from the raw materials including vinasse, polybutylene succinate (PBS), glycerine and the like via pre-treatment, proportioning, mixing, forming, dicing and other treatments. The novel composite material prepared by the method disclosed by the invention can be used for carrying out adsorption purification treatment on a thorium waste solution in the nuclear industry and the like.

Description

Vinasse/PBS matrix material and preparation thereof

Technical field

Relate to the sorbing material for thorium effluent purifying and preparation thereof.

Background technology

Natural thorium 232 is through fast neutron bombardment reaction, and can all be converted into fissionable element uranium 233, the theoretical utilization ratio as nuclear fuel can reach 100%, and higher than natural uranium 200 times, it has wide application in nuclear energy.But as the large radioactivity decay series of nature three---one of parent of uranium series, actinium series and thorium family, thorium produces a series of radionuclide in decay process, can produce α, β, γ tri-kinds of rays, out-of-control radioactivity is by contaminate environment and serious harm human body etc.In view of using value and the hazardous property of thorium, the thorium liquid waste disposal in nuclear industry and thorium are reclaimed and is of great significance with regard to tool.

Summary of the invention

Invention is intended to for the Recovery Purifying process of thorium waste liquid provides a kind of novel degradable matrix material and preparation technology thereof.

The matrix material of invention, it is prepared mainly: lose grain with liquor-making by solid fermentation and (be called for short vinasse, lower with), the raw material such as poly butylene succinate (PBS) and glycerine, carry out through process such as pre-treatment, batching, mixing, shaping, pelletizings.

Vinasse pre-treatment

By after vinasse water cleaning removing soluble impurity with 60 DEG C of dry 24h, for subsequent use after pulverizing and cross 80 mesh sieves (0.18mm), title vinasse material.

Batching

The amount of vinasse material, PBS being pressed 5:1 ~ 1:5 takes rear mixing respectively than (quality, lower with), and this i.e. admixtion; The glycerol of its amount 0.1 ~ 5% is evenly added, this i.e. Preblend in admixtion.

Mixing

Preblend is stirred 20min with the speed of 1000 ~ 1500 revs/min, and then with 30 DEG C of drying 8 ~ 12h, this i.e. blend composition.

Shaping

By blend composition with forcing machines such as the twin screws of temperature controllable with 85 DEG C ~ 110 DEG C, the condition extrusion moulding of 10 ~ 100rpm, after cooling, be molding mass.

Pelletizing

Molding mass is carried out cutting with a certain size, i.e. obtained vinasse/PBS composite adsorbing material.

Claims (1)

1. a preparation method for vinasse/PBS matrix material, is characterized in that: lose grain, poly butylene succinate (PBS) and glycerol stocks with liquor-making by solid fermentation, and through pre-treatment, batching, mixing, shaping, pelletizing process obtained, and its preparation method is:

1) vinasse pre-treatment

By after its soluble impurity of vinasse water cleaning removing with 60 DEG C of dry 24h, for subsequent use after pulverizing and cross 80 mesh sieves, title vinasse material;

2) prepare burden: vinasse material, PBS are taken rear mixing respectively by the mass ratio of 5:1 ~ 1:5, this i.e. admixtion; The glycerol of its amount 0.1 ~ 5% is evenly added, this i.e. Preblend in admixtion;

3) mix: Preblend is stirred 20min with the speed of 1000 ~ 1500 revs/min, then with 30 DEG C of drying 8 ~ 12h, this i.e. blend composition;

4) shaping: by blend composition with the twin screw extruder of temperature controllable with 85 DEG C ~ 110 DEG C, the condition extrusion moulding of 10 ~ 100rpm, after cooling, be molding mass;

5) pelletizing

Molding mass is carried out cutting with a certain size, i.e. obtained vinasse/PBS composite adsorbing material.

2., by preparation method described in claim 1, they are 4 years old) shaping in melt blending temperature be control in multi-region/section thermograde mode.

3. by preparation method described in claim 1, to 4) in molding mass lower the temperature with air blast cooling or cold wind mode.