Cleaning char filter, involves vacuuming char filter to obtain vacuumed filter, and soaking vacuumed filter in first aqueous solution for first predetermined period to obtain partially soaked filter
	EBENEZER J A; DAS A K; DURAISWAMI D; MADDILA A K; JOSHI M B; CHINTHALA P K
	2023-07-14
专利权人	RELIANCE IND LTD (RELN-C)
申请日期	2023-07-14
专利号	IN202321047634-A
成果简介	NOVELTY - Cleaning a char filter, involves vacuuming a char filter to obtain a vacuumed filter, and soaking the vacuumed filter in a first aqueous solution for a first predetermined period to obtain a partially soaked filter. The first aqueous solution comprises a predetermined amount of first acid and optionally first surfactant. The partially soaked filter is soaked in a second aqueous solution at 50-70℃ for a second predetermined time to obtain a soaked filter. The second aqueous solution comprises a predetermined amount of at least one alkali, and optionally at least one additive. The soaked filter is rinsed with water to obtain a rinsed filter, and purged the rinsed filter with air at a predetermined pressure to obtain a purged filter. The purged filter is sonicated in a third aqueous solution at a first predetermined frequency for a third predetermined time to obtain a pre-treated filter, where the third aqueous solution comprises a predetermined amount of the second acid. USE - Method for cleaning a char filter. ADVANTAGE - The method efficiently achieves the desired differential pressure, Frazier permeability (N2 permeability), radial crushing strength, bubble pressure, mean pore diameter, and bubble point of the used char filter. DETAILED DESCRIPTION - Cleaning a char filter, involves vacuuming a char filter to obtain a vacuumed filter, and soaking the vacuumed filter in a first aqueous solution for a first predetermined period to obtain a partially soaked filter. The first aqueous solution comprises a predetermined amount of first acid and optionally first surfactant. The partially soaked filter is soaked in a second aqueous solution at 50-70℃ for a second predetermined time to obtain a soaked filter. The second aqueous solution comprises a predetermined amount of at least one alkali, and optionally at least one additive. The soaked filter is rinsed with water to obtain a rinsed filter, and purged the rinsed filter with air at a predetermined pressure to obtain a purged filter. The purged filter is sonicated in a third aqueous solution at a first predetermined frequency for a third predetermined time to obtain a pre-treated filter, where the third aqueous solution comprises a predetermined amount of the second acid. The pre-treated filter is sonicated in a fourth aqueous solution at a second predetermined frequency for a fourth predetermined time to obtain a treated filter. The fourth aqueous solution comprises a predetermined amount of at least one anti-corrosive agent, and optionally at least one third acid, and then dried the treated filter in hot air under vacuum to obtain a cleaned char filter. An INDEPENDENT CLAIM is included for a device for cleaning a char filter, which comprises a metal tank configured to hold said filter, a piezo transducer bonded to the bottom side of the metal tank, and (c) an electrical generator configured to generate an electrical signal of a predetermined frequency
IPC 分类号	B01D-041/04 ; B01D-065/02 ; C11D-003/39 ; G03G-015/08 ; H01L-021/322
国家	印度
专业领域	材料科学
语种	英语
成果类型	专利
文献类型	科技成果
条目标识符	http://119.78.100.226:8889/handle/3KE4DYBR/21304
专题	中国科学院新疆生态与地理研究所
作者单位	RELIANCE IND LTD (RELN-C)
推荐引用方式 GB/T 7714	EBENEZER J A,DAS A K,DURAISWAMI D,et al. Cleaning char filter, involves vacuuming char filter to obtain vacuumed filter, and soaking vacuumed filter in first aqueous solution for first predetermined period to obtain partially soaked filter. IN202321047634-A[P]. 2023.

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