我国废橡胶资源综合利用现状

1 我国废橡胶资源综合利用历史 我国废橡胶资源利用除了直接原形利用或简单加工后供作鞋底、胶桶、船用靠坝、胶线绳等产品外,主要是生产再生胶和胶粉. 我国利用废橡胶生产再生胶开创于1930年,生产方法主要是油法,产品质量差、产量低,解放以前发展十分缓慢,最高年产量为8 000 t,到解放前的1949年降到500 t.     

我国废橡胶粉用于沥青改性的研究及应用

从道路建设与防水卷材制造两方面,描述了我国废橡胶粉在沥青改性用途中的研究及应用现状。大量国内试验及应用实例表明,与普通石油沥青相比,胶粉改性沥青的针入度、延度、软化点、温度敏感性、稳定性和抗老化性等性能均得到了改善。此外,较之其他种类的沥青改性剂,废橡胶粉成本低,具有环保与资源节约的优点,对我国循环经济的发展具有重要意义。     

专利资讯

专利名称：一种废旧轮胎胶粉/聚乙烯共混物的制备方法专利申请号：CN201010550838.X公开号：CN102093609A申请日：2010.11.19公开日：2011.06.15申请人：四川大学本发明公开了一种废旧轮胎胶粉/聚乙烯共混物的制备方法,其特点是采用臭氧处理的方法,在废橡胶微粉表面引入活性基团;采用γ-射线或电子束辐照在聚乙烯分子链上引入含氧极性基团。     

废橡胶清洁生产提速

正2018年6月7—8日,中国废橡胶综合利用行业绿色利用高峰论坛在河北定州举行。与会专家表示,我国废橡胶综合利用企业在清洁生产、环保技术、设备研发创新等方面取得众多进展,行业生产过程正加速实现绿色化。中国橡胶工业协会废橡胶综合利用分会秘书长祁学智指出,我国废橡胶综合利用行业正在加快清洁生产步伐,各     

我国废橡胶资源综合利用技术进展

1 我国废橡胶资源综合利用技术进展 近几年来,我国废橡胶利用的一些骨干企业和有关科研单位合作,根据市场需求,积极开发新的利用技术和设备,一些研究开发的新技术和设备在废橡胶利用行业中发挥了重要作用.     

废旧胶粉的制作及利用现状

简要介绍废旧胶粉的制造方法,以及胶粉在实际生产、生活当中的应用现状。提高废旧胶粉的再利用技术,拓展其应用领域,是节约资源、保护环境,促进国民经济增长方式转变和可持续发展的重要措施。     

加快开发废橡胶能源利用的必要性分析

废橡胶能源利用有各种途径，从环境保护、回收利用难度、处理消耗量等多个方面的分析，可以看出废橡胶能源利用很有必要，我国必须要加快废橡胶能源利用的研究与开发。     

绿环废橡胶综合利用成套设备项目获国家创新基金支持

日前,国家科技型技术创新基金2003年度第4批立项项目公告,浙江绿环橡胶粉体工程有限公司的"废橡胶综合利用成套设备--FCS废旧轮胎常温法精细胶粉成套生产线"项目名列其中.这是该产品在通过浙江省科技成果鉴定、获得发明专利初审合格后的又一殊荣.     

浅谈胶粉的应用 (一)

1 概述 胶粉应用最早方式是生产再生胶,其后随着胶粉生产技术的发展,各种不同方法生产的细胶粉、精细胶粉、超细胶粉以及各种特殊用途改性胶粉的出现,大大扩宽了胶粉的应用范围.到目前为止,胶粉已广泛应用于橡胶、塑料、建筑材料、公路建设等许多领域,并且还在不断扩大应用范围.可以预见,今后胶粉将作为一种特殊的弹性粉体材料逐渐被广泛应用.     

无剥离微负压废旧轮胎热解技术

20 0 1年全世界轮胎产量达 8× 10 8只 ,我国占10 %左右 ,约为 7× 10 7只。目前我国废旧轮胎的数量巨大 ,并且还会随着汽车工业和公路交通业的快速发展而同步递增。废旧轮胎的处理与利用正日益成为我国环境保护和资源综合利用的一个突出问题。废旧轮胎的处理方法主要包括热解、剥离再生、翻新、制胶粉、填埋、焚烧等。再生橡胶在 70年代曾是处理废旧轮胎的重要方式 ,但由于再生橡胶和其他原形改制方式 (制胶粉、翻新、作船弦防护等 )都不是终极处理方式 ,其制品经长时间使用报废后仍是需处理的废橡胶制品。另外 ,这些处理方法由于工艺技术…     

Pyrolysis of virgin and waste polypropylene and its mixtures with waste polyethylene and polystyrene

A comparison of waste and virgin polypropylene (PP) plastics under slow pyrolysis conditions is presented. Moreover, mixtures of waste PP with wastes of polyethylene (PE) and polystyrene (PS) were pyrolyzed under the same operating conditions. Not only the impact of waste on degradation products but also impacts of the variations in the mixing ratio were investigated. The thermogravimetric weight loss curves and their derivatives of virgin and waste PP showed differences due to the impurities which are dirt and food residues. The liquid yield distribution concerning the aliphatic, mono-aromatic and poly-aromatic compounds varies as the ratio of PP waste increases in the waste plastic mixtures. In addition to this, the alkene/alkane ratio of gas products shows variations depending on the mixing ratio of wastes.     

北京市居民衣服消费处置及对其回收利用认识调查与分析

首先对北京市居民每年购买新衣服的数量、支出、穿着时间、淘汰原因,以及闲置衣服的处理方式、数量等进行了调查与分析,然后对北京市居民对旧衣物回收利用的认识、回收形式及其处理方式,对旧衣物如何处理回收、再利用的担忧,对希望旧衣物回收箱摆放的场所等进行了调查与分析。其研究结果对废旧纺织品回收体系建设、制度及政策制定具有一定的参考价值。     

Photo-oxidation and Photo-toxicity of Crude and Refined Oils

The fate and effects of an oil spill are effected by solar radiation through the action of photo-oxidation and photo-toxicity. Photo-oxidation, an important process in the weathering of oil, produces a variety of oxidized compounds, including aliphatic and aromatic ketones, aldehydes, carboxylic acids, fatty acids, esters, epoxides, sulfoxides, sulfones, phenols, anhydrides, quinones and aliphatic and aromatic alcohols. Some of these compounds contribute to the marine biota toxicity observed after an oil spill. Photo-toxicity occurs when uptake of certain petroleum compounds, e.g. certain polycyclic aromatic hydrocarbons and benzothiophenes, is followed by solar exposure which results in much greater toxicity than after dark uptake. The mechanism of PAH photo-toxicity includes absorbance of solar radiation by the PAH which produces a free radical and this free radical in turn reacts with oxygen to produce reactive oxygen species that can damage DNA and other cellular macromolecules. While most studies on photo-toxicity have been carried out in the laboratory, there are studies showing that water from an oil spill is photo-toxic to bivalve embryos for at least a few days after the spill. Other studies have found that oil contaminated sediments are photo-toxic to several marine invertebrates. More studies are required to determine if marine fauna at an oil spill site are effected by the action of photo-toxicity and photo-oxidation.     

Synthesis and Characterization of Polyols and Polyurethane Foams from PET Waste and Crude Glycerol

In this study, polyethylene terephthalate (PET) waste from post-consumer soft-drink bottles and crude glycerol from the biodiesel industry were used for the preparation of polyols and polyurethane foams. PET waste was firstly depolymerized by the glycolysis of diethylene glycol. The glycolyzed PET oligomers were then reacted with crude glycerol at different weight ratios to produce polyols via a series of reactions, such as esterification, transesterification, condensation, and polycondensation. The polyols were characterized by titration, viscometry, gel permeation chromatography (GPC), and differential scanning calorimetry. Subsequently, polyurethane (PU) foams were made via the reaction between the produced polyols and polymeric methylene-4,4′-diphenyl diisocyanate and were characterized by mechanical testing, scanning electron microscopy, and thermogravimetric analysis. Polyols from crude glycerol and their PU foams were also prepared to compare properties with those of polyols and PU foams from PET and crude glycerol. The influence of aromatic segments existing in glycolyzed PET and glycerol content on the properties of the polyols and PU foams was investigated. It was found that aromatic segments of polyols from glycolyzed PET helped increase their molecular weights and improve thermal stability of PU foams, while high glycerol content in polyols increased the hydroxyl number of polyols and the density and compressive strength of PU foams.     

电厂建设运行中的水土流失预测与水土保持设计

在燃煤电厂建设运行的同时,将引起一系列的水土流失问题.以四川国电金堂电厂二期扩建工程为例,简要说明项目区水土流失预测的内容和方法,并在其基础上对可能产生的水土流失和危害进行了分析,同时介绍了建设期和运行期采取的综合防治措施,为类似工程的水土保持提供借鉴.     

磷对环境的污染及防治对策

我国水体富营养化严重，其主要控制因子是磷。在分析磷污染的污染状况，污染源的基础上，介绍了防治对策，采用低磷循环冷却水处理剂，减少磷排放，是防止工业磷污染的有效方法。     

Novel and innovative pyrolysis and gasification technologies for energy efficient and environmentally sound MSW disposal

Within the context of European Union (EU) energy policy and sustainibility in waste management, recent EU regulations demand energy efficient and environmentally sound disposal methods of Municipal Solid Waste (MSW). Currently, landfill with its many drawbacks is the preferred option in the EU and many other industrialised countries. Within the waste management hierarchy thermal disposal especially incineration is a viable and proven alternative. But, the dominating method, mass-burn grate incineration has drawbacks as well particularly hazardous emissions and harmful process residues. In recent years, pyrolysis and gasification technologies have emerged to address these issues and improve the energy output. To keep the many players in the field comprehensively informed and up-to-date, novel and innovative technology approaches emphasising European developments are reviewed.     

微生物絮凝剂及其在水处理中的应用

近年来对微生物絮凝剂的研究不断深入，新的高效菌种不断被发现。简要介绍了微生物絮凝剂的絮凝机理、分关、絮凝效果及影响因素，重点介绍了新型微生物絮凝剂在水处理中的应用。     

Laboratory Experiments and Estimation of Cumulative Infiltration and Sorptivity

Soil water cumulative infiltration affects the environment by controlling the irrigation rate and consequently the water and pollutants movement through the ground. In order to study the cumulative infiltration in a sandy soil sample, experiments were performed in the laboratory. The sample was placed uniformly in a transparent column with an inner diameter of 6 cm. A constant head boundary condition of a 2 mm height was applied on the surface of the sample and the cumulative volume of the incoming water was measured. Soil moisture at four locations of the column was measured, by using the TDR method in order to obtain the moisture profiles. By comparing the values of the infiltrated water volumes with those calculated by the integration of the moisture profiles, a good agreement was found out. Also the Parlange theoretical model fitted very well with the infiltration experimental points.