Is FTO synthesis wax the main product or a by-product of synthetic oils?
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This post was last edited by liaifeng on 2018-9-2 at 14:26. As the title suggests, are there any specialized FT synthesis products that are FTO synthesis waxes? Could you provide a detailed explanation of this process? Who are the main manufacturers in China at present, and what is their production process? Which company is the source of this technological process? Thank you! ! !
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Synthetic waxes and synthetic oils are produced through different F-T synthesis processes; synthetic oils use low-temperature slurry-bed iron-based catalysts, while synthetic waxes utilize high-temperature fixed-bed cobalt-based catalysts. There are currently no industrial plants for the production of waxes via the Fertox process; the relevant technologies are held by Shanxi Coal Chemical Research Institute, Yankuang, and Yasen. However, the most mature technology is likely that of SASOL, though it is difficult to acquire it in China. Even in the synthetic wax process, there are large amounts of fuel oil products, with wax accounting for only a small portion of the total output.
Thanks, I remember Shanxi Lu’an producing FTO synthetic wax for export!
The 1.8 million-ton Lu’an FTO wax production facility is a planned project; it should not yet be built, and the technology involved is likely from the Shanxi Coal Chemistry Research Institute； In addition, the 1 million-ton FTO synthesis unit at Yankuang Yulin may also be converted to a cobalt-based high-temperature FTO synthesis process.
Luan should export 180,000 tons of side-stream products, as well as wax products from the 5,000-ton cobalt-based pilot plant. The 60,000-ton cobalt-based conversion project was completed last year; due to a shortage of feed gas, it’s unclear whether it is currently in operation. 80 out of 180 is cobalt-based, so that’s still not feasible.
This post was last edited by mn197601 on 2016-1-11 at 21:47. What is exported from Lu’an should be 180,000 tons of side products, along with wax products from the 5,000-ton cobalt-based pilot plant. The 60,000-ton cobalt-based conversion project was completed last year; due to a shortage of feed gas, it’s unclear whether it is currently in operation. 80 out of 180 is cobalt-based, so that’s still not feasible. However, even in cobalt-based cases, it seems that there is more oil than wax. I didn’t look at the materials carefully; it’s probably something like that.
The product composition of Lu’an’s 60,000 tons per year methanol-to-oil waxes FTO project is as follows: 20,000 tons of hard wax, 8,000 tons of soft wax, 20,400 tons of heavy oil, and 11,600 tons of light oil. It is true that these products are exported to South Korea and Germany. The FTO waxes produced by Lu’an have performance levels comparable to those produced by Sasol and Shell; there’s no need to boast about this. In December 2015, an fire broke out at the Lu’an wax refining plant, affecting the refinement of wax.
The reaction temperature range for cobalt catalysts is between 180 and 250 degrees; there is no such thing as a high temperature. Cobalt-based fixed-bed reactors produce more paraffin. For iron-based slurry beds, there are terms related to low and high temperatures, with the temperature ranging around 250-320. Currently, the FTO wax production capacity is 70,000 tons for Saso, 50,000 tons for Shell, 20,000 tons in China by Lu’an, and about 10,000 tons for Yitai, whose wax is slightly softer.
Is there any source for Yankuang’s claim? If Yankuang’s 1 million-ton iron-based slurry bed could be converted to a cobalt-based one, that would indeed be an amazing technological achievement. In China, only Yanchang Petroleum has built a cobalt-based slurry bed with a capacity of 150,000 tons per year; internationally, only Saso possesses a cobalt-based slurry bed with a capacity of millions of tons.