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Steam quench performance improvement

一种蒸汽、急冷水的技术，应用在自然水体处理、分离方法、烃油处理产品等方向，能够解决装置停工、能量效率低、生产率低等问题

Active Publication Date: 2019-07-19
SABIC GLOBAL TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fouling of equipment in quench systems can lead to inefficient energy efficiency, low productivity and, in worst-case scenarios, can lead to unit shutdown for cleaning if excessive fouling is sufficient to restrict the flow of process water in the quench system

Method used

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  • Steam quench performance improvement
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Examples

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Embodiment Construction

[0031] Systems and methods have been discovered that reduce or limit the occurrence of fouling in a steam cracker quench system. The discovered systems and methods allow for sufficiently long residence times in the quench oil / water settler to improve oil / water separation and eliminate or at least minimize tarry fouling material in the stream from the quench oil / water settler , the stream from the quench oil / water settler returns to the quench water column as the quench column bottoms stream.

[0032] figure 2 A system 20 is shown in relation to a quench water tower loop in accordance with an embodiment of the present invention. Furnace effluent 201 is fed at the bottom of quench column QC-201. In the quench tower QC-201, the furnace effluent 201 is washed with circulating water to quench it and stop other 2 to C 4 Thermal side reactions with selective loss of olefin, preferably ethylene and / or propylene) product. Feed gas stream 202, which may be saturated with water, ex...

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Abstract

Methods that reduce fouling of equipment in a quench water recycling loop of a steam cracker quench system by separating tar from water in the quench water recycling loop. The methods may include settling a bottom stream comprising pyrolysis gasoline, from a quench tower, in at least two quench water settlers in parallel, each of the quench water settlers producing a settler hydrocarbon stream anda settler bottom quench water stream. The methods may also include mixing a bottom stream comprising pyrolysis gasoline, from a quench tower, with quench tower effluent water to form a combined stream. The method may further include settling the combined stream in at least two quench water settlers in parallel to produce settler hydrocarbon streams, settler bottom quench water streams, and settler process water streams.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application No. 62 / 431196, filed December 7, 2016, the entire contents of which are incorporated herein by reference for all purposes. technical field [0003] The invention relates to a quenching system of a steam cracker. More particularly, the present invention relates to reducing fouling in a steam cracker quench system, thereby improving the performance of the steam cracker quench system. Background technique [0004] Steam crackers are used to produce certain hydrocarbons, such as ethylene, by steam cracking hydrocarbon feedstocks such as naphtha, ethane and propane. During steam cracking (pyrolysis), hydrocarbons are superheated in reactors to temperatures as high as 750°C to 950°C. For the cracking process, a dilution steam generator (DSG) supplies dilution steam to the reactor to reduce the partial pressure of hydrocarbons. The superheated hydrocarbons are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G9/36C10G75/00C10G9/00C10G9/16B01J19/00C10G7/04C02F11/12
CPCC10G75/00C10G7/04C10G9/002C10G9/16C10G9/36B01J2219/00247B01J2219/00252C10G2300/4075C02F2103/365B01J19/0026B01D17/0211B01D17/0214B01D19/0042C02F2001/007C02F2101/32C10G2400/02
Inventor 穆斯塔法·N·卡里默哈特姆·贝勒法迪勒
Owner SABIC GLOBAL TECH BV
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