Title:
METHOD FOR PRODUCING PETROLEUM-BASED HIGH SOFTENING POINT PITCH
Document Type and Number:
WIPO Patent Application WO/2024/034928
Kind Code:
A1
Abstract:
A method for producing a petroleum-based high softening point pitch according to the present invention comprises: an oxidation heat treatment step for charging a raw material comprising petroleum residue with an oxidizing gas and heating same; and a reduced pressure heat treatment step for heating the product of the oxidation heat treatment step under reduced pressure conditions, wherein the petroleum residue has an aromatization index value of at least 0.73, and the boiling point of the petroleum residue when 70 vol% has been distilled on a distillation curve measured according to the method of ASTM D86 is at least 300°C. In the reduced pressure heat treatment step, the rate of increase of the softening point of the product of the oxidation heat treatment step while 1/3 of the total reduced pressure heat treatment reaction time passes may be 10-20°C/h, and the produced high softening point pitch may have a softening point of 150-300°C and a coking value of 58-85 wt%.
Inventors:
LEE JOOHYUNG (KR)
KWON HANSOL (KR)
SONG YOUNGSEOK (KR)
LEE HYUNCHUL (KR)
KWON HANSOL (KR)
SONG YOUNGSEOK (KR)
LEE HYUNCHUL (KR)
Application Number:
PCT/KR2023/010869
Publication Date:
February 15, 2024
Filing Date:
July 26, 2023
Export Citation:
Assignee:
OCI CO LTD (KR)
International Classes:
C10C3/00; C10C3/04; H01M4/02; H01M4/583
Foreign References:
| KR20210012074A | 2021-02-03 | |||
| KR20180051078A | 2018-05-16 | |||
| JP2022111062A | 2022-07-29 | |||
| JP2017524746A | 2017-08-31 | |||
| KR20150058009A | 2015-05-28 |
Attorney, Agent or Firm:
DAE-A INTELLECTUAL PROPERTY CONSULTING (KR)
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