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Method for cracking hydrocarbon feedstock in steam cracker unit

一种裂解器、烃原料的技术，应用在处理烃油、烃油处理产品、石油工业等方向，能够解决小规模加氢裂解单元资金成本高等问题

Active Publication Date: 2019-07-30
SAUDI BASIC IND CORP SA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the capital cost of a small-scale hydrocracking unit is generally considered too high to justify such an investment for steam cracker heavy by-products

Method used

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  • Method for cracking hydrocarbon feedstock in steam cracker unit
  • Method for cracking hydrocarbon feedstock in steam cracker unit
  • Method for cracking hydrocarbon feedstock in steam cracker unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0071] Feedstock 33 (which may include different types of feedstock, such as naphtha 35, kerosene 36, diesel oil 37, atmospheric gas oil (AGO) 38 from tanks 2, 3, 4, 5 respectively) is sent to hydrocracking device unit 17. In the hydrocracking unit 17, the feedstock 33 is hydrocracked in the presence of hydrogen. The hydrocracking process results in the formation of a gaseous stream 19 comprising C2-C4 paraffins, hydrogen and methane and a stream 40 high in aromatics. The gaseous stream 19 is sent to a separator 12, such as cryogenic distillation or solvent extraction, and separated into different streams, namely, a stream 55 comprising C2-C4 paraffins, a stream 20 comprising hydrogen and methane and a purge stream 18. Stream 20 may be recycled to hydrocracking unit 17 .

[0072] As before, stream 55 can be sent directly to (not shown) dehydrogenation unit 57 or directly to (not shown) steam cracker unit 11 . However, prior to sending stream 55 to steam cracker unit 11, it ...

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Abstract

The present invention relates to a process for cracking a hydrocarbon feedstock in a steam cracker unit, comprising the following steps of: feeding a liquid hydrocarbon feedstock to a hydrocracking unit, separating the stream thus hydrocracked in said hydrocracking unit into a high content aromatics stream and a gaseous stream comprising C2-C4 paraffins, hydrogen and methane, separating C2-C4 paraffins from said gaseous stream, feeding said C2-C4 paraffins thus separated to the furnace section of a steam cracker unit.

Description

[0001] This application is a divisional application of a Chinese patent application with an application date of June 30, 2014, an application number of 201480032009.9, and an invention title of "Method for Cracking Hydrocarbon Feedstock in a Steam Cracker Unit". technical field [0002] The present invention relates to a process for cracking a hydrocarbon feedstock in a steam cracker unit. Background technique [0003] Typically, crude oil is processed via distillation into a number of fractions such as naphtha, gas oil and residues. Each of these fractions has many potential uses, for example for the production of transportation fuels such as gasoline, diesel and kerosene or as a feed to some petrochemical and other processing units. [0004] Light crude oil fractions such as naphtha and some gas oils can be used to produce light olefins and monocyclic aromatics via processes such as steam cracking, in which a hydrocarbon feed stream is evaporated and diluted with steam fol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/04C10G69/06
CPCC10G67/0445C10G2400/20C10G2400/30Y02P30/40C10G69/06C10G69/00C10G2300/1044C10G2300/1051C10G2300/1055C10G2300/1059C10G2300/1085
Inventor A·M·沃德T·H·M·豪斯曼斯A·J·M·奥普因斯
Owner SAUDI BASIC IND CORP SA