Direct coal liquefaction process using inferior oil
A technology for direct coal liquefaction and low-quality oil, which is applied in the petroleum industry, hydroprocessing process, and hydrocarbon oil treatment, and can solve the problems of low production efficiency and low production efficiency of two-stage hydrogenation coal direct liquefaction process, so as to improve conversion efficiency, lower nitrogen content, and lower hydrogen consumption
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Embodiment 1
[0028] (1) Purify the naphthenic acid heavy oil by dehydrating and removing impurities in the purification treatment equipment. The water content of the dehydrated naphthenic acid heavy oil is less than 0.5wt%; the purified naphthenic acid heavy oil is subjected to atmospheric distillation , cut into light oil fractions 230°C;
[0029](2) Bituminous coal pulverized coal and heavy oil fraction > 230°C are mixed to form an oil-coal slurry with a coal powder content of 30wt%, and 0.03wt% iron sulfide catalyst is mixed into the oil-coal slurry, and then sent together with hydrogen into 10L of first-order reaction In-vessel reaction, the reaction pressure is 15MPa, the hydrogen partial pressure is 10MPa, the reaction temperature is 420°C, and the volume space velocity is 0.25h -1 , the reaction is completed to obtain a first-order reaction product;
[0030] (3) The primary reaction product is sent to the upper part of the 8L secondary reactor, the gas phase components in the prima...
Embodiment 2
[0032] (1) In the purification treatment equipment, the high heavy metal residue oil is dehydrated and purified, and the water content of the high heavy metal residue oil after dehydration is less than 0.5wt%; the high heavy metal residue oil after purification is subjected to atmospheric distillation , cut into light oil fractions 230°C;
[0033] (2) Bituminous coal powder and anthracite coal powder with a weight ratio of 1:1 are mixed with heavy oil fractions >230°C to form an oil-coal slurry with a total coal powder content of 50wt%, and 5wt% ZnCl is mixed into the oil-coal slurry 2 / S catalyst (where ZnCl 2 It is an active component, S is an auxiliary agent, and the atomic ratio of S and Zn is 0.5), and then sent together with hydrogen into a 10L primary reactor for reaction, the reaction pressure is 20MPa, the hydrogen partial pressure is 15MPa, and the reaction temperature is 460°C , the volume space velocity is 0.25h -1 , the reaction is completed to obtain a first-or...
Embodiment 3
[0037] (1) Purify the high heavy metal fuel oil by dehydration and impurity removal in the purification treatment equipment, the water content of the high heavy metal fuel oil after dehydration is less than 0.5wt%; the high heavy metal fuel oil after the purification treatment is subjected to atmospheric distillation , cut into light oil fractions 230°C;
[0038] (2) Mix sub-bituminous coal powder and heavy oil fraction >230°C to form an oil-coal slurry with a coal powder content of 40wt%, and mix 2wt% iron-molybdenum metal catalyst into the oil-coal slurry (the atomic ratio of iron and molybdenum is 50), hydrogen, heated to 100°C and mixed together from the bottom into a 10L primary reactor for reaction, the reaction pressure is 18MPa, the hydrogen partial pressure is 14MPa, the reaction temperature is 440°C, and the space velocity is 0.25h -1 , the reaction is completed to obtain a first-order reaction product;
[0039] (3) The primary reaction product is sent to the upper ...
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