Heavy-hydrocarbon raw material hydrogenation treatment method
A technology for hydrotreating and raw materials, applied in hydrotreating process, hydrocarbon oil treatment, petroleum industry, etc., can solve the problem that the downflow fixed-bed reaction activity cannot be fully utilized, the operation period and reaction temperature do not match, and the operation period is extended, etc. problems, to achieve the effect of improving processing flexibility, improving product quality, and extending operating cycles
Active Publication Date: 2014-08-20
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
[0006] In the existing combined process of UFR reactor and downflow fixed bed reactor, there is a problem that the operating cycle and reaction temperature of UFR reactor and downflow fixed bed reactor do not match with the extension of operation time. There is no temperature raising means at the inlet of the reactor, and the reaction activity of the downflow fixed bed cannot be fully exerted, which is not conducive to prolonging the operation period
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Embodiment
[0035] In this embodiment, one UFR reactor and three downflow fixed-bed reactors are set, wherein one downflow fixed-bed reactor is placed upstream of UFR according to the technological process of the present invention, as a pre-reactor, and the other two The downflow fixed bed reactor is located downstream of the UFR and used in series with the UFR.
[0036] The raw material used is a typical Middle East residual oil, the catalyst used is FZC-10U type upflow hydrogenation catalyst, the reaction temperature is 387°C, the total reaction pressure is 15.7MPa, the volume space velocity: 0.50h -1 , under the process condition of hydrogen oil specific volume (V / V) 230, the hydrogenation upgrading reaction is carried out in the upflow residual oil hydrogenation reactor, and the upflow hydrogenation oil is obtained after mainly removing impurities such as metals and sulfides . The properties are detailed in Table 2.
[0037] The pre-reactor is filled with a desulfurization and carbo...
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The invention discloses a heavy-hydrocarbon raw material hydrogenation treatment method, which comprises the following contents: an upper flow reactor (hereinafter referred to as UFR) is adopted and is connected in series with a lower flow type fixed bed reactor, heavy-hydrocarbon raw materials sequentially pass through the UFR and the lower flow type fixed bed reactor, reaction effluents are fractionated through a fractionation tower, a prepositive reactor is adopted, tower bottom oil of the fractionation tower partially circulates back to the prepositive reactor, and partial or all reaction effluents of the prepositive reactor are mixed with the UFR reaction effluents to enter the lower flow type fixed bed reactor. The method has the advantages that the upper flow type reactor, the lower flow type fixed bed reactor and the prepositive reactor are cooperated and matched through regulating the material distribution proportion, the flow process and the technical conditions, the cooperation matching effect of a combination flow process hydrogenation device is further improved, and further, the operation period can be prolonged.
Description
technical field [0001] The invention relates to a hydrogenation treatment technology for hydrocarbon raw materials, in particular to a hydrogenation treatment process for heavy hydrocarbon raw materials including atmospheric residue oil and vacuum residue oil. Background technique [0002] As crude oil becomes heavier and worse, more and more heavy oil and residual oil need to be processed. The processing of heavy oil and residual oil not only needs to be cracked into products with low boiling points, such as naphtha, middle distillate oil and vacuum gas oil, but also to increase their hydrogen-carbon ratio, which requires decarbonization or Hydrogenation method to achieve. Among them, the decarbonization process includes coking, solvent deasphalting, heavy oil catalytic cracking, etc.; the hydrogenation process includes hydrocracking, hydrofining, hydrotreating, etc. The hydrogenation process can not only hydrogenate and convert residual oil, improve the yield of liquid p...
Claims
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IPC IPC(8): C10G67/00
Inventor 刘铁斌翁延博吴锐耿新国李洪广张庆军关明华
Owner CHINA PETROLEUM & CHEM CORP