Heavy fraction oil hydrotreating method
A heavy distillate oil and hydrotreating technology, applied in hydrotreating process, hydrocarbon oil treatment, petroleum industry and other directions, can solve the problem that catalytic cracking products do not meet the requirements of clean fuel, and reduce the investment and operating cost of the device , The effect of increasing processing capacity and reducing operating costs
Active Publication Date: 2009-03-04
CHINA PETROLEUM & CHEM CORP +1
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Therefore, FCC products do not qualify as clean fuels
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[0023] Table 1 Properties of raw oil
[0024]
[0025] * Raw material oil-1 is mixed oil (wherein VGO:CGO:DAO=50:25:25 weight ratio)
[0026] ** Raw material oil-2 is mixed oil (wherein VGO:CGO=60:40 weight ratio)
[0027] Table 2 Main composition and properties of hydrotreating catalysts
[0028] catalyst 3936 FF-14 Catalyst composition MoO 3 , wt% 24.5 24.0 NiO, wt% 3.8 2.0 CoO, wt% — 1.6 Carrier, wt% margin margin The main properties of the catalyst specific surface, m 2 / g >160 >160 Pore volume ml / g 0.33 >0.30
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The invention relates to a hydrotreatment method. Heavy diesel fractions are used as material oil; under the hydrotreatment conditions, the material oil and hydrogen are mixed and pass through a first hydrotreatment reaction area; the oil generated by the hydrotreatment is separated in a high pressure separator; the gas obtained through separation is desulfurized; the liquid obtained through separation is mixed with the hydrogen after being desulfurized and pressurized by a circulated hydrogen compressor and then pass through a second hydrotreatment reaction area; the oil generated by the hydrotreatment is separated in the high pressure separator; the gas obtained through separation directly enters the first hydrotreatment reaction area; the liquid obtained through separation obtains a low-sulfur light oil product and a heavy oil product in a fractionating tower. Compared with the prior art, the method can effectively improve the hydrotreatment depth of the material oil; besides, the two hydrotreatment reaction areas only need one set of hydrogen circulating system; the device investment and the operation cost are low.
Description
technical field [0001] The present invention relates to a hydrotreating method, in particular to a method for deeply hydrotreating inferior heavy distillate oil by making full use of low-sulfur circulating hydrogen. Background technique [0002] At present, the nature of crude oil in the world is gradually becoming heavier and worse, coupled with the continuous development of the world economy and the increasingly strict environmental regulations, it is necessary to produce a large amount of light and clean fuels. cost to produce a product that meets the requirements. [0003] Catalytic cracking (FCC) still plays an important role in the processing of heavy feedstocks to produce light products. The quality of light oil directly produced by catalytic cracking technology is poor, especially the sulfur content of catalytic gasoline is relatively high, the sulfur content of catalytic diesel oil and the content of aromatics are high, and the cetane number is low. Therefore, cat...
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Inventor 刘涛张学辉曾榕辉赵玉琢方向晨李宝忠
Owner CHINA PETROLEUM & CHEM CORP
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