Method for utilizing Fischer-Tropsch synthesis product
A Fischer-Tropsch synthesis and product technology, which is applied in the petroleum industry, hydroprocessing process, and hydrocarbon oil treatment, etc., can solve the problems of insufficient utilization of Fischer-Tropsch synthesis products, single economic benefits of production line products, and low raw material utilization, etc., to achieve rich The effect of product content, the ability to achieve refined utilization, and the ability to increase price fluctuations
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[0036] According to a preferred embodiment of the present invention, the first distillation obtains a wax oil fraction with a distillation range greater than 450°C. Under this preferred embodiment, the production cost is further reduced, and it is more conducive to the refined utilization of Fischer-Tropsch synthesis products.
[0037] According to the present invention, the hydrofinishing adopts the method of catalytic hydrogenation to remove unsaturated olefins, aromatics and oxygen-containing compounds in the wax oil fraction, and to produce candle raw materials and high melting point waxes with the obtained Fischer-Tropsch synthesis refined wax, which solves the problem of The problem that the color number of the product is too low is caused by the coking of the material in the subsequent distillation and separation process.
[0038] In the present invention, the range of conditions for hydrofinishing the wax oil fraction is relatively wide, and in a specific embodiment, t...
specific Embodiment approach
[0044] In the present invention, the second distillation can be carried out by using multiple distillation towers connected in series, or by using a single distillation tower under reduced pressure and elevated temperature conditions. In the present invention, the distillation tower for the second distillation is not particularly limited, specifically, it may be a short-path distillation device, a vacuum still distillation apparatus, or a rectification tower. The short-path distillation device is a system that uses the free path of material molecules to divide raw materials into products of different fractions. In a specific embodiment, the rectification column is a sieve tray column.
[0045] In the present invention, the selection range of the second distillation of the Fischer-Tropsch synthesis refined wax obtained by the hydrofinishing is relatively wide.
[0046] Preferably, the distillation conditions of the fraction 1 include: a pressure of 0.5-1.5kPa and a temperature...
Embodiment 1
[0090] The utilization method of the Fischer-Tropsch synthesis product in this embodiment adopts figure 1 In the process flow shown, the raw material used is the Fischer-Tropsch synthesis product from the oil synthesis unit of the 4 million tons / year coal-to-oil branch of Guoneng Ningxia Coal Industry Company. The properties are listed in Table 1.
[0091] The active component of the catalyst used in hydrofining reactor 2 is MoO 3 / NiO, as oxide, MoO 3 The weight ratio to NiO is about 2:5, and the support is Al 2 o 3 , based on the dry basis weight of the catalyst, the content of the active component is 12% by weight, the catalyst is in the shape of a four-leaf clover, and its bulk density is 0.57g / cm 3 about. The operating pressure of the reactor is 7MPa, the temperature is 270°C, and the liquid hourly volume space velocity is 2h -1 , The volume ratio of hydrogen to oil is 350:1.
[0092] Table 1
[0093]
[0094]
[0095] Send the above-mentioned Fischer-Tropsch...
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Abstract
Description
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