The market status and production technology difficulties of petroleum system needle coke
Cnooc (Qingdao) Heavy Oil Processing Engineering Technology Research Center Co., LTD
Equipment Maintenance Technology, Issue 32, 2021
Abstract: The continuous development of Chinese science and technology has promoted the development of various sectors of the society. At the same time, it has also effectively enhanced our economic strength and overall national strength. As an important part of the circuit steelmaking process, the needle coke is mainly used in the production of graphite electrodes. It plays an important role in the production of lithium battery products, as well as in the nuclear power industry and aviation fields. With the promotion of the background of science and technology, the continuous optimization and improvement of electric furnace steelmaking technology has been promoted, and the corresponding standards and requirements of needle coke in the research and development and production process have been constantly updated, in order to comply with the requirements of social production development. Due to the different raw materials used in the production process, needle coke is divided into petroleum series and coal series. According to the specific application results, it can be seen that petroleum series needle coke has stronger chemical activity than coal series. In this paper, we study the current situation of the petroleum needle-focus market and the problems in the research and production process of relevant technology, and analyze the difficulties in the production development and related technical difficulties of the petroleum needle-focus.
I. Introduction
Needle coke plays an important role in the production of graphite electrode. From the current development situation, foreign developed countries such as the United States and Japan started earlier in the research and development and production of needle coke, and the application of relevant technologies has tended to be mature, and they have mastered the core manufacturing technology of petroleum needle coke. In comparison, the independent research and production of the needle in the oil focus start late. But with the continuous development of our market economy, promoting the comprehensive expansion of various fields of industry, the research and development of the needle in the oil focus has made breakthrough in recent years, realizing industrial production. However, there are still some gaps in quality and use effect compared with imported products.Therefore, it is necessary to make clear the current market development status and technical difficulties in the petroleum system.
Ii. Introduction and analysis of the application of petroleum needle coke technology
(1) Analysis of the current development status of petroleum needle coke at home and abroad
Petroleum needle coke technology originated in the United States in the 1950s. But our country is officially open
The research on the technology and manufacturing of petroleum needling coke began in the early 1980s. Under the support of national policy on technology research and development, Chinese research institutes began to conduct various tests on petroleum needling coke and constantly explore and research a variety of test methods. In addition, in the 1990s, our country has completed a lot of experimental research on the preparation of needle-focused petroleum system, and applied for the relevant patent technology. In recent years, with the support of relevant national policies, many domestic Academy of Sciences and related enterprises have invested in research and development and promoted the development of production and manufacturing within the industry. The research and development level of petroleum needle-coke technology is also continuously improving. The main reason for this phenomenon is that there is a large domestic demand for petroleum needle-coke. However, domestic research and development and manufacturing can not meet the demand of the market, a large part of the domestic market is occupied by imported products. In view of the current development situation, although the current focus and attention for the petroleum needle-focus technology research and development and manufacturing is increasing, in terms of the level of technology research and development, there are some difficulties that make the relevant technology research and development obstacles, which leads to a big gap between our country and the developed countries.
(2) Technical application analysis of domestic petroleum needle coke enterprises
Based on the analysis of domestic and foreign product quality and application effect, it can be seen that the difference between them in the quality of petroleum needle coke is mainly due to the difference in the two indexes of thermal expansion coefficient and particle size distribution, which reflects the difference in product quality [1]. This quality gap is mainly caused by the production difficulties in the manufacturing process. Combined with the specific production process and method content of petroleum needle coke, its core production technology is mainly for the pretreatment level of raw materials. At present, only Shanxi Hongte Chemical Co., LTD., Sinosteel (Anshan) and Jinzhou Petrochemical have realized mass production. In contrast, Jinzhou Petrochemical Company's production and manufacturing system of petroleum needle coke is relatively mature, the processing capacity of the device is continuously improved, and the related products produced can reach the middle and high level in the market, which can be used for high-power or ultra-high-power steel making electrodes.
Iii. Analysis of the domestic petroleum needle coke market
(1) With the acceleration of industrialization, the demand for needle coke is increasing daily
Our country is the big industrial production country in the world, which is mainly decided by the mode of our industrial structure.
Iron and steel production is also one of the important industries to promote the development of our economy. Under this background, the demand for needling is increasing every day. But at present, our technical research and development level and production capacity do not match market demand. The main reason is that there are few petroleum needle-focused enterprises that can actually produce quality standards, and the production capacity is unstable. Although the relevant technology research and development work is advancing at present, but want to meet the high power or ultra high power graphite electrode and there is a large gap, which leads to the obstacles in the quality control of petroleum needle-focused products. At present, the needle-measure coke market is divided into petroleum needle-measure coke and coal needle-measure coke. By contrast, petroleum needle-measure coke is slightly lower than coal needle-measure coke either in project development quantity or development level, which is also one of the main reasons to hinder the effective expansion of Chinese petroleum needle-measure coke. But along with the continuous improvement of the steel industry production technology level, the steel production and manufacturing demand for ultra-high power graphite electrode is increasing. This also highlights that with the continuous improvement of our industrial development level and the acceleration of the industrialization process, the demand for needle coke will be more and more large.
(2) Analysis of the floating price of needle coke market
According to the current level of industrial development and the adjustment of industrial structure and industrial content of our country, it is found that the petroleum series of needle-measure coking is more suitable for our country than coal series of needle-measure coking, which will further aggravate the domestic situation of imbalance between supply and demand of the needle-measure coking, in order to solve the situation of imbalance between supply and demand of the petroleum system, we can only rely on imports. From the analysis of the price fluctuation characteristics of imported products in recent years, it can be seen that the price of imported petroleum needle coke products has been on the rise since 2014. Therefore, for the domestic industry, with increasing supply gap and rising import price, petroleum needle coke will become a new investment hotspot in China's needle coke industry [2].
