导热油在粗苯加氢精制工艺中的应用（Application of heat conducting oil in crude benzol hydrofining process）.doc

导热油在粗苯加氢精制工艺中的应用（Application of heat conducting oil in crude benzol hydrofining process） DOC documents may experience poor browsing on the WAP side. It is recommended that you first select TXT, or download the source file to the local view. Heat oil in the benzene hydrogenation process in the application of Li Tongjun Li Zhi (coking plant of Shijiazhuang (Geng Yuan) Hebei Province Department of metallurgy) is excellent heat conducting oil heat conducting medium, with the characteristics of uniform heat transfer, simple operation and convenient transportation is widely used in many industrial fields. The first oil used in the world was called Dao Sheng, a mixture of 26.5% biphenyl and 73.5% diphenyl ethers. In twentieth Century 50 ~ 70s, American and Japan has developed three biphenyl (a mixture between adjacent benzene, hydrogenation of three antithetical couplet) biphenyl, naphthalene and other oil ethyl biphenyl new varieties. In recent years, new synthetic oils such as two benzyl benzene and modified poly two siloxane have been widely used in the synthesis of benzene with excellent properties. 1 thermal oil heating system and control condition of our factory in the construction of benzene hydrogenation device, decided to adopt the thermal oil system as the heat source, therefore, we successfully design a set of independent thermal oil heating system has been put into operation, running well. According to the crude benzene hydrogenation unit of the temperature difference between the heat source requirements, the system consists of two main sub cycle in different operating temperature, the system is mainly composed of hot oil furnace with coke oven gas heating (heat load 3GJ), oil tank and hot oil circulation pump and other equipment 14m3 oil expansion tank, 115m3. Among them, the maximum flow rate of 2 main circulating pumps is 470m3/h, one is opened and the other is, the maximum flow rate of the 2 auxiliary circulating pumps is 500 m3/h, one is opened and the oth