With regard to chemical products, the traditional process and public cognition are the first line of crude oil - naphtha - olefins, which have been subdivided into different chemical products. So the traditional concept is that the chemical products in daily production and life are only the original raw material, that is, crude oil.

However, with the continuous development and optimization of technology and some changes in the consumption of fossil resources, gradually the crude oil is no longer the only lead of the chemical industry, but in fact, the fossil gas and coal can be the original raw materials of the chemical products.

From the production link, both the bulk petrochemicals and the fine chemicals can be traced back to the olefin link. This link is like a fine nodule. From this to a rich raw material, there are three things from the bottom to the bottom. In recent years, the production of olefin products has been divided into three major routes, which can be divided into oil head, gas head and coal head. In our country, the differentiation of the three major routes is particularly obvious, and the structure is the most abundant. The downstream products of these three processes, especially the development of propylene industrial chain, are the most representative. There are three processes in the production of propylene in China: naphtha cracking, CTP/MTO/MTP, and PDH.

By the end of 2014, in the production of propylene production in China, the proportion of the three kinds of process routes were 81%, 10% and 9% respectively, and the capacity of naphtha route was 93% in four years ago. In just four years, the production capacity of coal head and gas head two production equipment was released, and the development of PDH was the most important.

At present, three kinds of production processes of propylene are facing different problems, and their potential for future development is also very different. For the traditional refining method, the advantage lies in its large foundation and complete matching of upstream and downstream, and its ability to resist risks is relatively strong. But in the second half of 2014, in the trend of mass commodity collective diving caused by international crude oil, the loss of oil refineries was particularly severe, almost the vast majority of the chemical products were encountered in Waterloo, but it was traced to the cost of crude oil, but it continued to be high. So in this extreme case, instead, the refinery's rich and complete large industrial chain has become a disadvantage. The more realistic problem faced by the refining line is that oil refining devices are in a state of excess, with few new additions in the future, and even some of the planned projects are in a shelved state. Therefore, in the next few years, there is almost no conventional refining route for propylene production. In the past few years, only Wuhan petrochemical and Sichuan Petrochemical have been put into operation.

Although the direction of coal chemical industry is strongly advocated in the period of 11th Five-Year, because of its high energy consumption and the actual cost in the low oil price era, there are no advantages of its actual cost, so many subsequent projects are also called to stop. At present, the coal chemical project which has been put into production and production in China is now counted as follows:

The 2015-2017 year is the stage of coal and methanol production of olefin. In East and Northwest China, many sets of capacity will be built, and the capacity of coal and methanol to make olefins will expand rapidly. In addition to the outstanding environmental protection problem of coal olefin, its location selection is also bound by a lot. In short, the device can only be built near the coal raw material, but the main consumption of its capacity is far away from the production area. Therefore, after 2017, the coal based methanol to olefin device will gradually reduce the growth rate, the development of coal based on the whole will show a state that is still not prosperous and nearly depressed.

Compared with the traditional route and coal chemical industry, in recent years and in the coming period, the best development trend is the PDH plant. The PDH device uses propane gas as the source, dehydrogenate propylene and downwards all kinds of downstream products of propylene industrial chain, which are involved in polypropylene, PO, butanol and acrylic acid. The first set of PDH devices in China started in October 2013. At present, six sets of devices have been put into use, and the total propylene production capacity is 3 million 450 thousand tons.

Because of the shortage of domestic propylene demand in the past few years, coal chemical industry and PDH equipment have come into being to a great extent, but because of the weak planning degree, the result of the project congestion has caused the domestic propylene capacity to rapidly change from the big demand gap to oversupply. In addition, because of the corresponding downstream of most of the propene, the production capacity of the downstream products of the propylene industrial chain is rapidly saturated and surplus, in which butanol and acrylic acid are already super saturated chemical products, and the future development of the market is full of the consumption pressure of overcapacity. The situation of PP is relatively good, and futures are supplemented by operation. The mode of operation of enterprises is relatively flexible.

The saturation of traditional refining route and the flash in the pan of coal chemical industry bring more space to the development of PDH. In the next few years, there are still many sets of PDH plans in our country. The concrete statistics are as follows:

From the time of production, the concentration of propane dehydrogenation capacity is concentrated in 2014-2017 years. From the distribution of propane dehydrogenation unit, East China is the most concentrated area of propane dehydrogenation unit. The source of propane is still mainly imported, and the associated gas in the Middle East and shale gas in the United States are the main sources.

In the near future, the highest number of propylene industrial chain devices with the highest market concern are the Yangzi River petrochemical and Yantai Wanhua. The two sets are all equipped with relatively rich downstream products. However, the low price of chemical products in the two quarter has made the new entry device bear huge cost pressure. As far as acrylic acid is concerned, Yantai's Wanhua acid production capacity is up to 300 thousand tons, will enter the sales link in August, will undoubtedly give the originally tired acrylic market a heavy blow, and view the end of the year, the new capacity part will greatly clamp down the overall opening rate of the acrylic industry chain and form a long pressure on the price surface. System. In addition to the butanol, this product also faces the situation of overcapacity, and the recent price again hit the low point at the beginning of the year, the Yangzi River and Wanhua are also unable to achieve profit in the short term. In fact, besides supporting PP's performance and prospects, other downstream supporting products are short of profitability in the short term.

In the second half of the year, there are still a large number of propylene and its auxiliary downstream equipment to be put into production. The development of this kind of large petrochemical industry not only has the demand for the diversified application of coal resources, but also the industrial chain of the terminal manufacturing enterprises to expand the industrial chain, and the demand for expanding the market share of the old enterprises. But the flourishing scene of a hundred flowers has met the heavy pressure of the international economic environment and the international crude oil downturn. In the future, the future of the propylene industry chain is more difficult. For enterprises, survival will be the most important.

But for China's chemical industry market, the scene is obviously beneficial, the diversified production line and the full and rich utilization of resources are the optimization and deepening of the current chemical industry structure, the ten years of coal chemical industry and PDH, and the ten years of strategic significance in the chemical industry market.