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Production system and production method of heavy oil productive naphtha

A naphtha and heavy oil technology, applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problems of low naphtha yield, high energy consumption, and many by-products, and achieve high yield and high The effect of high conversion rate and conversion rate

Inactive Publication Date: 2020-11-10
张家港保税区慧鑫化工科技有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0005] The current technology for producing naphtha from heavy oil cannot be achieved in one step. Heavy oil needs to be processed through three sets of independent devices, such as an independent ebullating bed or suspended bed device and an independent fixed bed device. The energy consumption is high, the naphtha yield is low, and there are many by-products

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  • Production system and production method of heavy oil productive naphtha

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Embodiment 1

[0050] A kind of method of heavy oil prolific naphtha of the present invention, vacuum residual oil, straight-run wax oil and straight-run diesel oil mixed feed, it comprises the steps:

[0051] 1) The heavy oil raw material is one or a combination of two or more of atmospheric residue, vacuum residue, coal tar, catalytic oil slurry, and asphalt. In this embodiment, the vacuum residue is used as the primary feed to mix with hydrogen and additives through the feed unit;

[0052] 2) Put the vacuum residue, hydrogen and additives into the primary suspension bed reactor unit of the primary reaction unit for suspension bed hydrogenation reaction to generate primary reaction products, which include naphtha, distillate oil and untreated Converting heavy oil and additives; the primary feed is heated to 450-470°C through a heat exchanger and a heating furnace before entering the primary suspension bed reactor unit. The ratio of parts by weight of vacuum residue to hydrogen and additiv...

Embodiment 2

[0062] A kind of method of heavy oil prolific naphtha of the present invention, vacuum residue, straight-run wax oil feed, it comprises the steps:

[0063] 1) The vacuum residue is used as a primary feed and mixed with hydrogen and additives through a feed unit;

[0064] 2) Put the vacuum residue, hydrogen and additives into the first-order suspended bed reactor unit of the first-order reaction unit to carry out the suspension-bed hydrogenation reaction to generate the first-order reaction product;

[0065] 3) The primary reaction product of the primary suspension bed reactor unit is combined with straight-run wax oil or secondary feed to form a secondary feed, and enters the secondary fixed-bed reactor of the secondary reaction unit together with hydrogen for secondary fixed-bed hydrogenation reaction , generating secondary reaction products;

[0066] 4) The secondary reaction product enters the tertiary fixed-bed reactor of the tertiary reaction unit as the tertiary feedsto...

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Abstract

The invention relates to a heavy oil productive naphtha production system, which comprises a feeding unit, a first-stage reaction unit, a second-stage reaction unit, and a third-stage reaction unit, wherein the first-stage reaction unit comprises a first-stage heating furnace, a first-stage suspended bed hydrogenation reactor, and a first-stage separation unit, the secondary reaction unit comprises a secondary heating furnace, a secondary fixed bed hydrogenation reactor, a vacuum tower and a secondary separation unit; and the third-stage reaction unit comprises a stripping tower, a third-stageheating furnace, a fractionating tower, a third-stage fixed bed hydrogenation reactor and a third-stage separation unit. The heavy oil productive naphtha production system further includes a circulating hydrogen system. The invention relates to a production method of heavy oil productive naphtha. According to the production system and the production method of heavy oil productive naphtha, the conversion rate of components in heavy oil at 525 DEG C or above is 95%, the naphtha product yield is greater than 80%, and meanwhile, the production system and the production method are simple in process, compact in occupied area, reasonable in commercial investment, flexible in feeding and relatively low in hydrogen consumption.

Description

technical field [0001] The invention belongs to the technical field of hydrogenation of heavy oil, in particular to a production system and method for producing heavy oil and naphtha. Background technique [0002] In the next 10-15 years, my country's national economy is expected to continue to develop rapidly at a rate of about 6-7%. The consumption of petroleum products is still in the growth period. The average annual growth rate of crude oil consumption is 6.4%, while the annual growth rate of domestic crude oil production is only 1.9%. As the quantity of imported crude oil continues to increase, the availability of high-quality crude oil in the international market is also decreasing, and the proportion of light crude oil in imported crude oil is decreasing. The proportion continued to rise. The relative densities of these heavy oils and extra heavy oils are generally above 0.96, and processing is difficult. How to convert these heavy oils and extra heavy oils to produ...

Claims

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Application Information

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IPC IPC(8): C10G65/12
CPCC10G65/12
Inventor 昝大鑫王鑫
Owner 张家港保税区慧鑫化工科技有限公司
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