T/CI 172-2022 Active Group standards

T/CI 172-2022 Technical specifications for resource utilization of benzene-based distillation residue

Publish Date: 2022-12-29 Implement Date: 2022-12-29 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CI 172-2022

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Coal tar processing products

ICS Name: Integrated waste management

Publish Date: 2022-12-29

Implement Date: 2022-12-29

Scope

Scope: This document specifies the terms and definitions, main components, principles, process flow, process control, control of phenolic distillation residue for mixed phenolic phenolic resin production, quality control of coal-based activated carbon binder, quality control of road epoxy asphalt additives, control of hazardous components, equipment requirements, environmental protection, equipment protection, microbial hazard protection, labor protection and personnel qualification training, etc. for the resource utilization of phenolic distillation residue from the refining and extraction of phenol and other poly-phenols, as well as long-chain phenolic distillation residue generated from the production of other organic compounds using phenolic substances as raw materials. Main technical content: 6.1 Process flow description of the resource utilization of phenolic distillation residue: - Using a vacuum distillation column, the phenolic distillation residue is subjected to vacuum deep distillation. The light-weight mixed phenolic fraction is collected at the top of the column, and the heavy-weight residue is collected at the bottom. After blending a certain proportion of phenol into the light-weight mixed phenolic fraction, the phenolic resin is reacted with formaldehyde under acidic catalysts (such as oxalic acid) to produce phenolic resin. This phenolic resin replaces traditional phenolic resin as a binder for magnesia-carbon bricks. After mixing with magnesia sand powder and asphalt powder, it is used for the pressing preparation of magnesia-carbon bricks. The organic substances volatilized during the heat conversion of magnesia-carbon bricks are collected and recovered centrally. - The heavy-weight residue is mixed with formaldehyde and cross-linked under acidic catalysts to form a high-viscosity resin-like compound. After being viscosified with diluents, it can be used as a coal-based activated carbon binder. After mixing with coal tar and coal powder, i