Current Status and Future Prospects of Coal Chemical Industry Development in Our Country
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Current Status and Future Prospects of Coal Chemical Industry in China: Coal is a fossilized mineral formed from the remains of ancient plants buried in geological strata, subjected to pressure and temperature conditions within the Earth’s crust that result in carbonization. If the various organic substances it contains are separated and made full use of, its value is much higher than that of simply using it as fuel. The industry that uses coal as a raw material and undergoes chemical processing to produce various chemical products is known as coal chemistry. I. Current Development Status of Coal Chemical Industry The coal chemical industry uses coal as a raw material and, through chemical reactions, produces various chemicals. At present, China’s coal chemical industry is mainly focused on coal tar, synthetic ammonia, and methanol. In 2004, China’s production of coal tar was around 4 million tons, synthetic ammonia was 42.22 million tons, and methanol was 4.4 million tons. At present, the overall level of coal chemical industry in our country is relatively low, and the main shortcomings are as follows: (1) High energy consumption, high pollution, low efficiency, and low profitability. Due to the characteristics of coal, the coal chemical industry faces issues such as long processing times, high investment costs, and severe pollution; such conditions make it more appropriate to adopt new technologies and pursue large-scale operations. (2) Slow progress in coal chemical gasification technology. Coal gasification is the cornerstone and foundation of coal chemistry, and it significantly influences the efficiency, costs, and development of coal chemistry. What we should pursue is a gasification process that is efficient, low-consumption, and pollution-free. The gasification process has a history of over 100 years. The evolution of gasification technology includes replacing air gasification with oxygen (or oxygen-enriched) gasification, using pulverized coal in place of lump coal or crushed coal, substituting fluidized beds and gasized beds for fixed beds, and progressing from atmospheric pressure gasification to high-pressure gasification – all of these represent important trends in the advancement of gasification technology. The advancement of gasification technology in our country is slow. Our country has also carried out some development and improvements in gasification technology, but few of them have been truly industrialized. In recent years, there have been advancements in the improvement of End furnace technology and the development of ash fusion furnaces in our country; some of these technologies have already been put into industrial use, with ongoing improvements being made. To actively improve the gasification technology in China’s coal chemical industry, LURGI furnaces and TE*CEO furnaces (in three pressure grades) were introduced. However, after being introduced, they underwent replacements to adapt to different coal types as well as various technical upgrades, and it took several years before normal production could be achieved. The stable operation of large-scale gasification technology presents certain challenges. Due to the slow progress of localization and other reasons, the impact of the introduced technologies on improving the overall gasification technology in the coal chemical industry is limited. The 300,000 t/a NH3 plant built using China’s proprietary multi-nozzle opposed water-coal slurry gasification technology has been put into operation at the Dezhou Fertilizer Plant. (3) There is severe low-level duplicate construction. Currently, a boom in methanol production exists across the country, with the capacity of existing and planned methanol plants exceeding 10 million tons. As is well known, the global methanol market is facing an oversupply. In the coming years, as several large-scale methanol plants around the world that use cheap natural gas as a feedstock come online, prices will fall further. Their target market is exports to our country, and as a result, some domestic methanol manufacturers will suffer severe impacts. It is worth noting that a large number of methanol plants currently under construction or planned to be built are relatively small in scale; most of the new plants have an annual production capacity of 100,000 to 200,000 tons, with the largest ones having only 600,000 tons per year. Methanol is a chemical plant with very significant economies of scale. Numerous studies indicate that coal-based methanol plants must rely on low-cost coal, large-scale operations, advanced technology, and low investment; only through the integration of these four elements can they be competitive on the international stage. Coal-based methanol lacks international competitiveness without a sufficiently large scale. (4) Lack of strategic vision and weak technological development. Coal resources play a dominant role in China’s energy supply, but the issue is that technological development for coal conversion has not been given sufficient importance, with inadequate investment and attention. The strategic resource that can ultimately replace oil is coal, and for coal to truly serve as a substitute for oil, technological development must come first, resulting in new technologies with proprietary intellectual property rights. The oil crisis of the 1970s spurred the search for alternative energy sources and the development of clean coal technologies. During the downturn in the coal chemical industry, many large foreign companies seized the opportunity to build up strategic technical reserves for the development of new coal chemical technologies. In recent years, commercialized SHELL gasification technologies, as well as MTO and MTP technologies, have all been developed over the past 10–20 years through scientific approaches and persistent efforts. Due to our insufficient efforts in developing innovations, we still need to introduce these technologies today at a high cost. II. New coal chemical projects: Due to the rising prices of international crude oil and natural gas, as well as the shortage of domestic oil and gas resources and the increasing need for oil imports, the development of alternatives to oil has become a key focus for the advancement of coal chemistry. Currently, the coal chemical projects that are viewed with optimism include methanol fuel, coal-to-oil, and methanol-to-olefins. (1) Methanol fuel includes methanol gasoline (blended or used in pure form) ； Conversion of methanol to dimethyl ether (as a substitute for liquefied petroleum gas and diesel) ； Fuel cells, etc. Methanol gasoline has long been put into industrial use, and it is currently widely applied in regions such as Shanxi. Dimethyl ether has been industrialized and widely adopted in regions such as Shandong in recent years; dimethyl ether projects have become a hot spot for investment, with new projects growing in scale. Fuel cells are still in the research and development stage and have not been put into industrial use. (2) Coal-to-oil (direct liquefaction, indirect liquefaction): Direct coal liquefaction uses coal as the main raw material to produce coal-based liquid fuels through hydrogenation. In recent years, our country has collaborated with foreign companies from Germany, Japan, and the United States to prepare pre-feasibility reports on the direct liquefaction of coal into oil products in various regions. In August 2004, Shenhua Group began construction on a project for the direct liquefaction of coal to produce oil products. Coal indirect liquefaction uses coal as a raw material, which is gasified to produce syngas, and then the syngas is used to create liquid fuels. The F-T synthesis reaction is an important reaction in the indirect liquefaction of coal, and South Africa’s SALSOL has already successfully utilized this F-T reaction to produce petroleum products. The indirect liquefaction process includes the high-temperature fixed-bed synthesis process (SAS), with products of the petrochemical type ； The product of the low-temperature slurry bed synthesis process is of the oil-type ； There is also SHELL’s synthetic middle distillate process (SMDS). Several companies in our country have already begun the preliminary work for this project. (3) Methanol to Olefins (MTO) The MTO technology was developed by UOP and NORSK HYDRO; the typical consumption rate is 5.6 tons of methanol per ton of ethylene produced, with 0.83 tons of propylene, 0.24 tons of butene, 0.1 ton of C5, and 3.97 MMBTU of fuel gas as by-products. Currently, Nigeria is building an MTO project with an annual production capacity of 400,000 tons each for ethylene and propylene, and 2.5 million tons per unit for methanol, with completion scheduled for 2006. The Methanol to Propylene (MTP) technology was developed by LURGI company. The typical consumption rate is 3.1 t of methanol per ton of propylene, with 0.37 t of gasoline as a by-product, and 0.88 MMBTU of fuel gas. Pilot tests of MTP technology began in the 1990s; the pilot plant in Norway has been in operation for over 11,000 hours, an industrial demonstration plant is under construction in Iran, and contracts for commercial-scale plants are also being discussed. An annual production of 1.7 million tons of methanol requires the construction of an ethylene production plant with a capacity of 300,000 tons or a propylene production plant with a capacity of 500,000 tons. With the significant reduction in methanol production costs and advancements in methanol-to-olefins technology, MTO and MTP are now on the verge of large-scale commercialization. There is a significant shortage of polyolefins in our country; if it becomes possible to produce olefins from methanol using coal as a raw material, it will undoubtedly represent a major breakthrough. III. Guidelines for the Development of Modern Coal Chemical Industry Modern coal chemical industry is a technology-intensive and capital-intensive sector, and construction and operation methods that are most conducive to improving economic efficiency should be adopted. The development of modern coal chemical industry should adhere to integration, centralized development, intensification, large-scale operation, and modernization in order to truly transform the mode of economic growth. Adhere to integration. It involves combining large-scale coal chemical plants with coal mines (of course, an integrated coal-electricity-chemical production model can also be adopted). Build the gasification facility at the mine (or near it) in order to reduce coal transportation costs and freight expenses, achieve optimal allocation of resources, and make rational use of coal resources (using high-quality coal for high-value applications and low-quality coal for lower-value ones, ensuring that each type is used appropriately). Only by establishing an integrated interest mechanism for coal chemical industry and coal mines can the risks related to prices, transportation, and layout in the future be reduced. Adhere to base-based and intensive development. The inherent characteristics of the chemical industry are suitable for comprehensive utilization and further processing. A base is a collective term for enterprises. By concentrating related enterprises within a base, it is possible to make full, efficient, and rational use of various resources, improve the efficiency and effectiveness of resource allocation, and leverage the agglomeration effect of enterprises. In summary, the most important purpose of adopting a centralized layout for the development of coal chemical industries is to achieve a market-based, highly optimized allocation of resources and to pursue intensive operations. Adhere to large-scale and modernization. Only by adopting first-class technology, first-class equipment, and first-class management to build large-scale facilities that achieve economies of scale can a first-class coal chemical industry base be established, enabling leapfrog development and international competitiveness.
Analysis of the Development Prospects of the Coal Chemical Industry: The world has now entered an era of diversification in energy and chemical raw materials. Technologies that utilize coal as a feedstock to produce chemicals, as well as those that convert coal into efficient and clean energy sources, are set to compete alongside the technologies related to oil, gas, and other energy sources. As various individual technologies continue to mature, the coal chemical industry is facing new opportunities for development. I. Forecast of Industry Development Trends China has developed its coal chemical industry under conditions of limited oil and gas resources but abundant coal. Since coal is an inefficient and highly polluting energy source, the sustainable development of China’s coal chemical industry depends not only on economic considerations but also on compliance with environmental protection requirements. To this end, the development of China’s coal chemical industry must be based on a sustainable development strategy, pursuing a new path of growth characterized by high levels of technological advancement, low resource consumption, minimal environmental pollution, and good economic returns. It is expected that the development of the coal chemical industry in China will exhibit the following trends: (1) In terms of product structure, in addition to developing traditional coal chemical products such as coking and synthetic ammonia, the industry will be oriented toward the market, with a focus on developing coal chemical processes aimed at energy conversion. Comprehensive coal chemical plants that combine energy conversion with co-production of various products will be established, such as those for coal liquefaction, gasification to produce synthetic fuels and chemical products, or for the simultaneous production of electricity and heat. (2) In terms of corporate structure, due to the large scale of capital investment required for new coal chemical projects, coal chemical enterprises will tend to grow larger in size. Especially in the context of global economic integration, cultivating world-class coal chemical enterprises and establishing large-scale factories with international competitiveness is an inevitable choice to enhance the competitiveness of China’s coal chemical industry and promote its sustainable development. (3) In terms of technology development, at present, most coal chemical enterprises in China rely on imported technologies and equipment, while domestic technology development is mainly carried out in relevant research institutions. With the large-scale industrialization of new coal chemical technologies, enterprises will gradually become the main drivers of their development, which will effectively accelerate the pace at which these new technologies reach the market and provide more financial support for the development of such technologies in the coal chemical sector. (4) In terms of capital investment, as the market prospects for coal chemical products become clearer and the structural adjustment of the domestic coal industry progresses, **(the central and local governments) will surely increase their support for the development of coal chemical projects; the coal chemical industry is expected to receive more funding thanks to favorable policies. At the same time, foreign and private capital may also enter the coal chemical industry on a large scale with the support of relevant policies, which will contribute to diversifying the sources of investment funds for this industry. Based on clean coal technology, as long as the new coal chemical industry adheres to the principle of giving priority to energy conservation and efficiency improvement, makes extensive use of new coal conversion technologies that are energy-efficient, efficient, and produce less pollution, and meets both ecological and economic requirements, it will surely be able to achieve sustainable development in this sector. China will also undoubtedly develop into the world’s largest coal chemical industry. II. Major risks in development: Low-level repetitive construction may result in an industry development model that remains based on extensive practices. The key to promoting the stable and healthy development of the coal chemical industry lies in shifting its growth pattern, from extensive growth to intensive growth. The foundation for the development of the coal chemical industry is coal resources. For various reasons, China’s coal industry has long been characterized by a fragmented structure and fierce competitive dynamics; the traditional coal chemical industry is also one that involves high consumption, high energy use, high emissions, and significant pollution. This extensive growth model, which focuses on expanding production volume rather than optimizing the structure or addressing pollution, has affected the quality of development in China’s coal industry, resulting in significant waste of coal resources; it has been proven to be unsustainable in practice. New coal chemical industries must adhere to the principles of giving priority to pollution reduction and energy conservation, striving to minimize pollution and material consumption, and pursuing an intensive growth path in order to achieve development that is both economically viable and competitive. However, it is concerning that as new types of coal chemical industries gradually become a focus in the industrial economy, there has also emerged a trend of following fashion within this sector: major coal-rich regions and coal companies are all planning and launching coal chemical projects. Taking methanol as an example, the existing and planned methanol production capacity is already approaching or exceeding 10 million tons, and signs of excessive investment are emerging. What is more noteworthy is that a large number of methanol plants that are under construction or planned have relatively small capacities; most of the new plants have capacities of 100,000 to 200,000 tons per year, with even the largest ones having only a capacity of 600,000 tons per year. Numerous studies indicate that coal-based methanol plants must rely on low-cost coal, large-scale operations, advanced technology, and low investment in order to gain market competitiveness; they are chemical plants with very significant economies of scale. Therefore, the development of the coal chemical industry faces a significant risk of low-level repetitive construction. Since coal chemical projects generally require large investments and have long construction periods, the losses incurred when the market finally reacts to overcapacity are also significant. In the race for market share, some companies may adopt competitive strategies based on low costs and low prices, which will severely harm the healthy and sustainable development of the coal chemical industry. The risk of technological backwardness due to insufficient investment in R&D: Technological progress is the driving force behind the sustainable development of the coal chemical industry. The oil crisis of the 1970s spurred the search for alternative energy sources and the development of clean coal technologies. During the downturn in the coal chemical industry, many large foreign companies seized the opportunity to build up strategic technical reserves for the development of new coal chemical technologies. In recent years, commercialized technologies such as Shell gasification, MTO technology, and MTP technology have all been developed over the past 10–20 years. This fully demonstrates that for the coal chemical industry to develop, technology must come first. At present, the technology for coal chemical projects under construction or planned in our country mainly comes from abroad, at a high cost. From a strategic perspective, coal will remain a core component of China’s energy structure in the long term. New coal chemical technologies with independent intellectual property rights are of great significance for China’s energy security and economic development. However, given the current situation, the development of coal chemical technology has not yet been elevated to a strategic position in China’s economic development. There is still a significant gap between China’s coal chemical technology and advanced foreign levels, and the pace of technological progress is relatively slow. Taking coal gasification technology as an example, U.G.I furnaces were discontinued abroad over 40 years ago, yet in China they remain the dominant type of furnace for coal gasification, accounting for more than 90% of the coal-based syngas produced. Since each type of gasifier and its associated process can only be adapted to certain coal types, the slow progress in coal gasification technology has hindered the development of China’s coal chemical industry. In some areas where lignite or other types of coal are available, the lack of suitable gasification technologies forces them to rely for a long time on transporting coal from other places in order to use it with certain types of furnaces and processes, which results in significantly higher operating costs. Judging from the development experiences of other industries, it is possible to bridge the technological gap in the short term by introducing external technologies, but in the long run, reliance on one’s own R&D capabilities is necessary to achieve the technological advancements required for the sustainable development of the industry. Relying on \"exchanging the market for technology\" will only result in long-term dependence on others in terms of core technologies, while at the same time leading to a gradual loss of market share. As a strategically important industry in China, coal chemical processing must intensify its efforts in technology development to create new technologies with independent intellectual property rights. Otherwise, the control over the development of this industry will fall into the hands of foreign companies, and domestic enterprises will be unable to reap the economic benefits that come from the deep processing of coal. Factors such as cost contribute to the uncertainty in the market competitiveness of coal chemical products. The market competitiveness of these products is influenced by various factors: one of them is crude oil prices. The rise in international crude oil prices in recent years has led to a rapid increase in the production costs of petrochemical products, thereby highlighting the relative investment value of coal chemical products – a factor that has also fueled enthusiasm for investment in the coal chemical industry. In the long term, due to supply and demand constraints, international oil prices are not expected to drop significantly. However, due to fluctuations in the global economy, international oil prices continue to experience periodic rises and falls. Therefore, in the absence of significant technological advancements, the market competitiveness of coal chemical products will also undergo periodic changes, and companies should be fully aware of this. The second is the development and utilization of natural gas. The rise in crude oil prices has not only spurred investment enthusiasm in the coal chemical industry but also drawn investors’ attention to the natural gas sector. The market prospects for natural gas power generation, natural gas chemicals, and similar sectors are also viewed positively by many investors. The development and utilization of natural gas can serve as a substitute for corresponding coal-based chemical products in certain sectors, which will hinder the improvement of the competitiveness of these coal-based chemical products in the market. Third is coal prices. Coal serves as both a raw material and a fuel in the production of many coal chemical products; therefore, fluctuations in coal prices have a direct impact on the market competitiveness of these coal chemical products. At present, in the feasibility studies of many coal chemical projects, the coal price used for cost calculation is the market price. Given that the cycle for coal chemical projects, from feasibility study and approval to construction and commissioning, is relatively long, coal prices may experience significant fluctuations during this period. As a result, the cost of products at the time of commissioning can deviate greatly from expectations, leading to high uncertainty regarding the competitiveness of those products in the market. III. Research on Industry Development Strategies New coal chemical industries are technology- and capital-intensive sectors; their development should adhere to principles of integration, establishment of specialized bases, large-scale operations, modernization, and intensification. By transforming the mode of economic growth, it is possible to improve the operational conditions of these industries and enhance their economic efficiency. Integration involves combining large-scale coal chemical plants with coal mines (or adopting an integrated coal-electricity-chemical production model), by locating coal gasification facilities at the mines (or in areas near them). This approach aims to reduce coal transportation costs and efforts, achieve optimal allocation of resources, and make rational use of coal resources (by using high-quality coal for high-value applications and lower-quality coal for less critical uses). Only by establishing an integrated interest mechanism for coal chemical industry and coal mines can the risks related to prices, transportation, and layout in the future be reduced. Base establishment: The inherent characteristics of the chemical industry are suitable for comprehensive utilization and further processing. A base is a collective term for enterprises; enterprises related to each other are concentrated within such a base, which enables full, efficient, and rational utilization of various resources, improves the efficiency and effectiveness of resource allocation, and leverages the agglomeration effect of enterprises. In summary, the most important purpose of adopting a centralized layout for the development of coal chemical industries is to achieve a market-based, highly optimized allocation of resources and to pursue intensive operations. As coal chemical products become larger and more modern, they will not be able to withstand the fluctuations in international oil prices nor the intense market competition resulting from economic globalization if they lack international competitiveness. Only by adopting first-class technology, first-class equipment, and first-class management to build large-scale facilities that achieve economies of scale can a first-class coal chemical industry base be established, enabling leapfrog development and enhanced international competitiveness.