Similarities and Differences between MTO and MTP

Both MTO and MTP technologies belong to the category of using methanol to produce olefins. The main difference is that MTO technology uses methanol to produce ethylene, propylene and butadiene products ； MTP technology uses methanol to produce a single propylene product. As for the process, MTP is a fixed bed reactor using ZSM-5 catalyst ； .MTO is a fluidized bed reactor using SAPO-34 catalyst.

There are many differences, and there is a lot of information online, but no one has summarized it.

Both MTP and MTO are processes for producing olefins through the reaction of methanol. The difference is that the distribution of their products is different. The proportion of propylene in the MTP product is relatively large, while the specific gravity of ethylene is smaller, but it is not impossible, that is to say, the product of MTP is mainly propylene. The proportion of ethylene in the product of MTO is larger, but the ratio of ethylene and propylene can be adjusted within a certain range as needed.

There is not much difference on the surface, but there are many questions here. How does the catalyst used by lurgi maintain a high propylene to ethylene product ratio? This may be a fundamental question, how does the catalyst maintain a certain level of activity for a long time. MTP uses a fixed-bed process. There is no information on the specific process parameters, so the difference can only be discussed in general terms. This post was last edited by Zhenyouci on 2009-3-2 19:36 ]

MTP uses ZSM-5 catalyst, which is a large-pore molecular sieve suitable for synthesizing propylene with larger molecules. MTO uses SAPO-34 catalyst, which is a small-pore molecular sieve suitable for producing ethylene with smaller molecules. The advantage of fixed bed is that the catalyst is not easy to be damaged, but it is easy to coke and needs regular regeneration (online regeneration). The advantage of fluidized bed is that the catalyst is not easy to coke, but it is easy to wear and break, so new catalyst needs to be replenished regularly.

The State Council requires the steady development of coal chemical industry demonstrations China Coal Chemical Network 2009-5-21 May 18, 2009, China* * The website published the full text of the detailed rules (details) for the adjustment and revitalization of the petrochemical industry issued by the General Office of the State Council, which clearly requires the steady development of coal chemical industry demonstrations. The detailed rules stated that since the second half of 2008, affected by the international financial crisis, the petrochemical industry has been greatly affected. Domestic and foreign markets have shrunk, production has continued to decline, corporate inventories have increased, prices have fallen sharply, the industry's economic benefits have declined, and production and operation have become difficult. At present, my country's petrochemical product consumption is still in a growth period. There is a long-term rigid demand for oil products, fertilizers, and pesticides. The market potential for high-end petrochemical products is huge. We must seize the opportunity, accelerate the adjustment and revitalization of the petrochemical industry, and promote the stable operation and healthy development of the industry. The planning period referred to in the details is 2009-2011. The detailed rules set out six major planning goals: First, by 2011, the crude oil processing volume reached 405 million tons, and the output of refined oil and ethylene reached 247.5 million tons and 15.5 million tons respectively. Second, by 2011, the output of chemical fertilizers will reach 62.5 million tons (on a pure basis), and the output of potash fertilizer will reach 4 million tons (on a pure basis). Third, the industrial agglomeration in the Yangtze River Delta, Pearl River Delta, and Bohai Rim regions has further improved, and 3-4 20-million-ton oil refining and 2-million-ton ethylene production bases have been built. Fourth, in 2009 all vehicle gasoline met the National III standard, in 2010 all vehicle diesel met the National III standard, and in 2011 the yield of light oil products reached 75%. Fifth, breakthroughs have been made in industrial technologies such as butyl rubber, complete sets of technical equipment such as oil refining with over 10 million tons, million-ton ethylene, and large-scale pulverized coal-to-synthetic ammonia production have been localized, and demonstration projects such as coal-to-liquids, olefins, and ethylene glycol have been completed and put into operation. Sixth, by 2011, the energy consumption per unit of industrial added value in the petrochemical industry will decrease by more than 12%, and the emissions of pollutants such as sewage, sulfur dioxide, and dust will decrease by more than 6%. The standard oil consumption per ton of crude oil processing in large-scale refining units is less than 63 kilograms, the standard oil consumption per ton of ethylene in large-scale ethylene plants is less than 640 kilograms, and the comprehensive energy consumption per ton of ammonia in large-scale coal-to-synthetic ammonia plants is less than 1.8 tons of standard coal. In view of the development of the coal chemical industry, in addition to the fifth of the six major planning goals, "the localization of complete sets of technical equipment such as large-scale pulverized coal to produce synthetic ammonia, and the completion and commissioning of demonstration projects such as coal-to-liquids, olefins, and ethylene glycol", it is also proposed to steadily carry out coal chemical industry demonstrations. The detailed rules require resolutely curbing the blind development momentum of the coal chemical industry and actively guiding the healthy development of the coal chemical industry. In the next three years, we will stop approving coal chemical projects such as coke and calcium carbide that simply expand production capacity. In principle, we will no longer arrange new coal chemical pilot projects. We will focus on the existing five types of demonstration projects: coal to oil, coal to olefins, coal to dimethyl ether, coal to methane gas, and coal to ethylene glycol, and explore new ways of efficient and clean conversion of coal and diversified development of petrochemical raw materials. At the same time, the detailed rules require accelerating the elimination of backward production capacity of calcium carbide, methanol and other products, and improving the level of pollution prevention and industrial development. Use clean coal gasification and energy cascade utilization technology to adjust the raw material and power structure of existing nitrogen fertilizer production enterprises to diversify raw coal and reduce costs. ； Appropriately build large-scale nitrogen fertilizer production facilities in energy production areas to replace outdated production capacity. AsiaChem Consulting believes that judging from the full text of the latest announced petrochemical industry adjustment and revitalization planning details, in the next three years, demonstration projects of coal-to-liquid, coal-to-olefins, coal-to-dimethylether, coal-to-natural gas (SNG) and coal-to-ethylene glycol projects in the new coal chemical industry will be launched. * * strong support. After the industrialization demonstration is successful, it will be decided whether to promote it on a large scale based on the macroeconomic environment, market conditions and the cost competitiveness of these projects at the time. AsiaChem Consulting also believes that the petrochemical industry adjustment and revitalization planning details also reflect the importance of independent intellectual property rights technology. Among them, the localization of complete sets of technical equipment such as large-scale pulverized coal-to-synthetic ammonia production was highlighted. At the same time, in the fields of coal-to-liquids, coal-to-olefins, coal-to-ethylene glycol and other fields, my country's Shenhua Group, Yankuang Group, Zhongke Synthetic Oil, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Fujian Institute of Physics, Chinese Academy of Sciences, Danhua Science and Technology and other units have mastered corresponding independent intellectual property technologies, and these technologies will be applied in demonstration projects.