Treatment method and device for intermediate product of long-chain alkane preparation from sugar platform chemical
A long-chain alkane and processing method technology, which is applied in the field of intermediate product processing methods and devices, can solve the problems of consuming solvent and hydrogen, and the operation process cannot be continuous, and achieves the effect of saving the separation process.
Active Publication Date: 2020-04-21
CHINA PETROLEUM & CHEM CORP +2
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Problems solved by technology
Difurylidene acetone is insoluble in various hydrocarbons and is only partially soluble in oxygenated solvents such as ethanol and acetone. Although difurylidene acetone can be dissolved in an oxygenated solvent and can be pumped into the reactor, the hydrogenation process It will cause hydrodeoxygenation reaction of oxygenated solvent, consume solvent and hydrogen, and generate cheap low-carbon alkanes
Chinese patent application CN104650947A discloses a prehydrotreatment method for similar raw materials: under the action of a catalyst, hydrogenation pretreatment is realized in a tank reactor, but the operation process of this method cannot be continuous
Method used
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Embodiment 1
[0079] bisfurylidene acetone As a solid raw material, it is filled into the preheated heating storage tank 11 and enters the mixer 10 together with the preheated reaction medium bio-jet fuel. After being fully mixed under stirring, it enters the hydrogenation reactor 20 together with hydrogen, and reacts under the action of a hydrogenation catalyst. The reacted material is separated into a gas phase and a liquid phase by a gas-liquid separator 30, and the gas phase is recycled after being boosted. . The liquid phase (prehydrogenation product and bio-jet fuel medium) flows out of the device, and the specific operating conditions and reaction results are shown in Table 1.
Embodiment 2
[0081] dimethylfurfurylidene acetone Be raw material, technological process is identical with embodiment 1, and operating condition and reaction result are shown in Table 1.
Embodiment 3
[0083] The raw materials and process flow are the same as in Example 1, and the reaction medium is 50wt% isooctane + 50wt% 2-methylnonane. The operating conditions and reaction results are shown in Table 1.
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One embodiment of the invention provides a treatment method and device for an intermediate product of long-chain alkane preparation from a sugar platform chemical. The method comprises the following steps: mixing a condensation product of the sugar platform chemical with a reaction medium, and carrying out hydrogenation pretreatment; carrying out gas-liquid separation on the material subjected tohydrogenation pretreatment to obtain a liquid product; wherein the reaction medium comprises liquid alkane and / or a liquid oxygen-containing organic matter. According to the method provided by one embodiment of the invention, the liquid alkane and / or the liquid oxygen-containing organic matter are / is used as the reaction medium, and can exist in the obtained liquid product to participate in a subsequent hydrodeoxygenation process without discharging, so that the effect of dissolving / dispersing the solid raw material is achieved, and a separation process is saved.
Description
technical field [0001] The invention relates to the preparation of long-chain alkanes by sugar platform compounds, in particular to a method and device for treating intermediate products of sugar platform compounds for preparing long-chain alkanes. Background technique [0002] Under the background of the oil crisis and the increasingly serious greenhouse effect, as the only renewable energy source containing carbon—biomass, it is currently the most promising resource that can be used to prepare hydrocarbon liquid fuels to replace petroleum. In order to make the transition from fossil energy economy to carbohydrate economy sustainable, and to convert biomass into high value-added fuels and chemicals, the Dumesic team used lignocellulosic hydrolyzate furfural as raw material, and first extended carbon through aldol condensation reaction. chain to give furylideneacetonate [4-(2-furyl)-3-buten-2-one] and diconylideneacetonate [1,5-bis-(2-furyl)-1,4-pentadiene -3-ketone], follo...
Claims
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IPC IPC(8): C10G3/00
CPCC10G3/50Y02P30/20
Inventor 闫瑞郭勇王艳芹刘晓晖夏启能赵红陶志平
Owner CHINA PETROLEUM & CHEM CORP