Title:
METHOD FOR PRODUCING PETROLEUM-BASED HIGH-SOFTENING POINT PITCH
Document Type and Number:
WIPO Patent Application WO/2024/034929
Kind Code:
A1
Abstract:
A method for producing petroleum-based high-softening point pitch of the present invention comprises: an oxidation heat treatment step of introducing an oxidizing gas to a raw material containing petroleum-based residues, followed by heating; and a reduced-pressure heat treatment step of heating the resultant product of the oxidation heat treatment step under reduced-pressure conditions, wherein the oxidation heat treatment step is performed in an oxidation heat treatment apparatus satisfying the following condition (1). Condition (1): 40 ≤ D1/D2 ≤ 100 (where, D1 represents the diameter of an oxidation reactor; and D2 represents the diameter of a flow duct for introducing the oxidizing gas)
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Inventors:
LEE HYUNCHUL (KR)
KWON HANSOL (KR)
SONG YOUNGSEOK (KR)
LEE JOOHYUNG (KR)
KWON HANSOL (KR)
SONG YOUNGSEOK (KR)
LEE JOOHYUNG (KR)
Application Number:
PCT/KR2023/010870
Publication Date:
February 15, 2024
Filing Date:
July 26, 2023
Export Citation:
Assignee:
OCI CO LTD (KR)
International Classes:
C10C3/00; C10C3/04
Foreign References:
| KR20220105211A | 2022-07-27 | |||
| KR20210012074A | 2021-02-03 | |||
| KR20180051078A | 2018-05-16 | |||
| JP2017524746A | 2017-08-31 | |||
| KR20180040807A | 2018-04-23 |
Attorney, Agent or Firm:
DAE-A INTELLECTUAL PROPERTY CONSULTING (KR)
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