Methane directly produces ethylene devices to drive

China Coatings Network
: abundant and low-cost natural gas can be directly converted into the world's largest chemical base raw material ethylene. Recently, Siluria Technologies of the United States held a grand driving ceremony for its test plant in Texas, which became the first company in the world to convert natural gas directly into ethylene on a large scale. The new route could bring about major changes in the traditional oil-based ethylene industry.
as a basic industrial raw material, ethylene occupies an important position in the petrochemical industry, and ethylene production is one of the important indicators to measure the level of petrochemical development in a country. In addition to North America and the Middle East, most countries and regions in the world, including China, use tarch oil as raw material, using steam cracking legal ethylene. This method not only consumes high energy, emits many greenhouse gases and costs high, but also squeezes out valuable oil resources because the raw materials come from oil.
in order to reduce oil dependence, countries have carried out research on natural gas olefins with the main component of methane. The route of natural gas ethylene is divided into direct and indirect methods. Compared with the lengthy and cumbersome process of indirect method, direct method can convert methane into ethylene in one step, which has high economic value and is very attractive.
But methane selection and directed conversion are world-class challenges, known as the "holy grail" of the entire chemical community, so from the 1980s to the beginning of this century, the academic community has not been able to develop industrially feasible direct methane ethylene production process.
breakthrough is in the catalyst. In 2010, Siluria creatively used biomass templates to accurately synthesize nanowire catalysts, using high-flung technologies to sift out the most suitable elemental composition from a large number of alternative catalysts, and to develop industrially viable methane directly into ethylene catalysts.
the catalyst can be lower than the conventional steam cracking operation temperature of 200 degrees C to 300 degrees C, at 5 to 10 atmospheric pressure, highly effective catalytic methane into ethylene, the activity is more than 100 times the traditional catalyst.
Siluria-designed reactor is divided into two parts, one for converting methane into ethylene and ethane, and the other for cracking the by-product ethane into ethylene, and the heat required for the cracking reaction comes from the heat released by the methane conversion reaction. This design allows the reactor to feed both natural gas and ethane, while maximizing energy savings.