Thermal cracking of acid tars to asphalts as a process for utilization of refinery wastes

The feasibility of manufacture of asphaltic materials by means of the thermal cracking of acid tars was shown and a corresponding bench-scale unit was designed. The dependence of the viscosity characteristics of the obtained compositions on the temperature and time of the process was examined using the penetration technique.     

Group analysis of acid tars

A unique procedure for systematic group analysis of heavy petroleum products was developed and exemplified by acid tars as a type of refinery waste. Unlike the presently known procedures of analysis of crude petroleum and petroleum products, an advantage of this method is the successive complete separation of petroleum refining products into components by extraction in a Soxhlet apparatus followed by the adsorption of some components. The procedure makes it possible to determine the fractional group composition of a representative sample of acid tar from one of the storage ponds in the Nizhni Novgorod oblast.     

Membrane technology for processing of acid tars

A process for processing acid tars using membrane technology is proposed. Petroleum products are obtained as a result — lube oil, resin, solid fuel. __________ Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 6, pp. 46–47, November–December, 2007.     

Composition of acid tars from production of oils

Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 2, pp. 32–35, February, 1990.     

The carcinogenicity of wood tars

In 1932–1933 when chemical carcinogens—polycyclic aromatic hydrocarbons (PAH)—first began to be manufactured, studies were begun concerning their separation from coal tar [1–3]. Translated fromKhimiya i Tekhnologiya Topliv i Masel, No. 1, pp. 47 – 48, January – February, 2000.     

Environmental aspect of storage of acid tars and their utilization in commercial petroleum products (Review)

Data on the formation and disposal of acid tars, as well as on the development of ways of their utilization into commercial petroleum products, are summarized. An analysis of the relevant literature over the past 60 years has made it possible to objectively assess the environmental situation that has developed as a result of the disposal of acid tars in storage ponds in Russia. The risks of harmful effects of heavy refinery wastes on humans and animals were estimated.     

奥氏体不锈钢装置连多硫酸应力腐蚀与防护

奥氏体不锈钢在连多硫酸中发生沿晶应力腐蚀开裂。文章分析了连多硫酸浓度、氯离子、不锈钢热处理状态对开裂的影响。防护措施可从环境、材料、应力三方面进行。     

SY-100薄膜防锈油的研制

用树脂、缓蚀剂和其它添加剂研制的SY-100薄膜防锈油在室内的防锈期可达1年.     

重油催化裂化再生系统设备综合检测

近年来 ,国内许多炼油企业的催化裂化装置在掺炼重油或焦化渣油后 ,装置的再生器、三旋等再生及烟气系统主体设备的一些部位产生了大量裂纹。这些裂纹大多发生在焊缝、融合线或焊缝热影响区内 ,多数为穿透性裂纹 ,并常有高温烟气和催化剂外泄的事故发生 ,不仅造成了装置的非计划停工 ,而且增加了装置检修的工作量和难度。有时甚至造成设备壳体更新 ,给企业带来了一定的经济损失 ,严重威胁到装置的安全、稳定、长周期生产。许多炼油企业针对这一情况进行了一系列研究 ,对已发生开裂的催化裂化装置设备进行各种典型裂纹试样的综合试验分析发现…