Method for separating hydrocarbon hydrocracking products

A hydrocracking and separation method technology is applied in the field of separation of hydrocarbon hydrocracking products, which can solve the problems of increasing a naphtha fractionator, increasing one-time investment and operating costs, increasing energy consumption, etc. The effect of solving the problem of hydrogen sulfide corrosion and liquefied gas desulfurization and avoiding the possibility

Inactive Publication Date: 2002-10-02
LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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Problems solved by technology

Although theoretically this patent can well avoid the problem of naphtha corrosion, but the naphtha fractionation tower is correspondingly added, which increases the primary investment and operating costs, and the energy consumption also increases accordingly

Method used

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  • Method for separating hydrocarbon hydrocracking products
  • Method for separating hydrocarbon hydrocracking products

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Embodiment Construction

[0032] h 2 S

[0033] It can be concluded from the above table: 1. The hydrogen sulfide content in the bottom of the stabilization tower 1 is approximately zero, which greatly reduces the material corrosion problem currently existing in this tower; 2. The bottom stream of the deethanizer 4 can be used as a liquefaction The petroleum gas product is directly discharged from the device, and the product does not contain hydrogen sulfide. Under this working condition, the mass recovery rate of the low-fraction oil relative to the fractionated part of the feedstock is 99.64%. The recovery rate can be adjusted by adjusting the operating parameters of the debutanizer 3 3. Since the bottom stream of stabilization tower 1 and debutanizer 3 does not contain hydrogen sulfide, the problem of unqualified hydrogen sulfide corrosion of light oil products such as naphtha is avoided to a large extent.

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Abstract

The separation method of hydrocracked product of hydrocarbons incldudes stabilization tower, hydrogen sulfide washing tower, debutanizing tower, deethanizing column and light hydrocarbon absorption tower. The stabilizatino tower is designed according to cutting portion or all C6 component, the absorption oil of light hydrocarbon absorption tower is from tower bottom product flow of debutanizing tower, the overhead gas of stabilizaltion tower, overhead gas of debutanizing tower and overhead gas of deethanizing column are mixed, and fed into light hydrocarbon absorption tower to recover light hydrocarbon, and the tower bottom rich absorption oi lof light-hydrocarbon absorption tower and hydrogen sulfide washing tower feeding material coming from stabilizatino tower and mixed, and fed into hydrogen sulfide washing tower. The C3 and C4 components can be completely recovered, and its liquified gas yield is high.

Description

technical field [0001] The invention relates to a method for separating hydrocarbon hydrocracking products, in particular to a method for recovering and desulfurizing light hydrocarbons of hydrocarbon hydrocracking products. technical background [0002] Hydrocracking unit has increasingly become a key means to balance refinery production and market demand due to its wide range of raw oil processing, flexible product structure, good product quality, and high liquid yield. At present, the fractionation process of the hydrocracking unit mostly adopts the scheme of first stabilization and then fractionation, that is, the low-fraction oil from the reaction part is first separated from C by the stabilization tower. 4 The following components are removed by deethanizer 1 and C 2 , recovery of liquefied gas, and C 4 The above cuts are fractionated into various product components in the normal and vacuum fractionation towers. This scheme has simple process and convenient operati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G49/22
Inventor 师敬伟曾茜李立权
Owner LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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