CN103254591B

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

Info

Publication number: CN103254591B
Application number: CN201310210495.6A
Authority: CN
Inventors: 陈彦; 苏蓉蓉; 苏娇; 王京; 林晓艳
Original assignee: Southwest University of Science and Technology
Current assignee: Southwest University of Science and Technology
Priority date: 2013-05-31
Filing date: 2013-05-31
Publication date: 2015-01-21
Anticipated expiration: 2033-05-31
Also published as: CN103254591A

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

Distiller's grain/PBS composite material and its preparation

技术领域 technical field

涉及用于钍废液净化的吸附材料及其制备。 The invention relates to an adsorption material for purifying thorium waste liquid and its preparation.

背景技术 Background technique

天然钍232经过快中子轰击反应，可全部转化为可裂变元素铀233，作为核燃料的理论利用率可达100%，比天然铀高200倍，其在核能方面有广阔的应用。但作为自然界三大放射性衰变系列——铀系、锕系和钍系的母体之一，钍在衰变过程中产生一系列的放射性核素，能够产生α、β、γ三种射线，不加控制的放射性将污染环境并严重危害人体等。鉴于钍的应用价值与有害性，对核工业中的钍废液处理与钍回收就具有十分重要的意义。 Natural thorium 232 can be completely converted into fissionable element uranium 233 after fast neutron bombardment reaction. The theoretical utilization rate as nuclear fuel can reach 100%, which is 200 times higher than natural uranium. It has broad applications in nuclear energy. However, as one of the three major radioactive decay series in nature——uranium series, actinide series, and thorium series, thorium produces a series of radionuclides during the decay process, which can produce three types of rays, α, β, and γ, without control The radioactivity will pollute the environment and seriously endanger the human body. In view of the application value and harmfulness of thorium, it is very important to treat thorium waste liquid and recover thorium in the nuclear industry.

发明内容 Contents of the invention

发明旨在为钍废液的净化回收处理提供一种新型可降解复合材料及其制备工艺。 The invention aims to provide a novel degradable composite material and its preparation process for the purification and recovery treatment of thorium waste liquid.

发明的复合材料，其制备主要是：以固态发酵酿酒丢糟(简称酒糟，下同)、聚丁二酸丁二醇酯(PBS)及甘油等原料，经预处理、配料、混合、成型、切粒等处理进行。 The composite material invented is mainly prepared by using raw materials such as solid-state fermentation distiller's grains (referred to as distiller's grains, the same below), polybutylene succinate (PBS) and glycerin, after pretreatment, batching, mixing, molding, Processing such as dicing is carried out.

酒糟预处理 Distiller's grain pretreatment

将酒糟用水清洗除去可溶性杂质后以60℃干燥24h，经粉碎并过80目筛(0.18mm)后备用，称酒糟料。 The distiller's grains were washed with water to remove soluble impurities, dried at 60°C for 24 hours, crushed and passed through an 80-mesh sieve (0.18 mm) for later use, and weighed as distiller's grains.

配料 ingredients

将酒糟料、PBS按5:1~1:5的量比(质量，下同)分别称取后混合，此即配合料；在配合料中均匀加入其量0.1~5%的丙三醇，此即预混料。 Distiller's grains and PBS were weighed and mixed according to the ratio (mass, the same below) of 5:1~1:5, which is the batch material; 0.1~5% of glycerol was evenly added to the batch material, This is the premix.

混合 mix

将预混料以1000~1500转/分钟的速度搅拌20min，然后以30℃干燥8~12h，此即共混料。 Stir the premixed material at a speed of 1000~1500 rpm for 20 minutes, and then dry it at 30°C for 8~12 hours, which is the blended material.

成型 forming

将共混料以可控温的双螺杆等挤出机以85℃~110℃、10~100rpm的条件挤出成型，经冷却后即为成型料。 Extrude the blended material with a temperature-controllable twin-screw extruder at 85°C~110°C, 10~100rpm, and then cool it to form a molding material.

切粒 Diced

将成型料以一定大小进行切分，即制得酒糟/PBS复合吸附材料。 The molded material is cut into certain sizes to obtain distiller's grains/PBS composite adsorption material.

Claims

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.