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Title:
METHOD FOR PREVENTING FOULING OF HEAT EXCHANGER IN PETROLEUM PROCESS
Document Type and Number:
WIPO Patent Application WO/2022/004434
Kind Code:
A1
Abstract:
Provided is a novel method which enables the highly efficient prevention of the fouling of a heat exchanger in a petroleum process.　In one aspect, a method for preventing the fouling of a heat exchanger in a petroleum process using a fouling inhibitor is provided, the fouling preventing method comprising: adding a fouling inhibitor comprising a phosphite ester compound and a succinic acid imide compound to a process fluid when the H/C atom ratio in dirt in the heat exchanger is more than 1.3, and adding a fouling inhibitor comprising a phosphite ester compound and a succinate ester compound to the process fluid when the H/C atom ratio in the dirt in the heat exchanger is 1.3 or less; and feeding the process fluid containing the fouling inhibitor to the heat exchanger.

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Inventors:
NISHIKOHRI HIROKI (JP)
KATO KEI (JP)
Application Number:
PCT/JP2021/023222
Publication Date:
January 06, 2022
Filing Date:
June 18, 2021
Export Citation:
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Assignee:
KATAYAMA CHEMICAL WORKS CO (JP)
NALCO JAPAN G K (JP)
International Classes:
C10G7/10; C10G75/04
Domestic Patent References:
WO2018207708A12018-11-15
Foreign References:
JP2010163539A2010-07-29
JPH01247488A1989-10-03
JP2013505338A2013-02-14
JP2008506818A2008-03-06
Attorney, Agent or Firm:
IKEUCHI & PARTNERS (JP)
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