GB/T 51325-2018 (English Version)

Standard No.: GB/T 51325-2018
Language: Chinese, Available in English version
Release Date: 2018
Published By: Ministry of Housing and Urban-Rural Development of the People's Replublic of China
Latest: GB/T 51325-2018

Scope: The "Design Standards for Coal Coking Crude Benzene Processing Engineering" is now approved as a national standard, numbered GB/T51325-2018, and will be implemented from April 1, 2019. This standard is published on the website of the Ministry of Housing and Urban-Rural Development (www.mohurd.gov.cn), and is published by China Planning Publishing House organized by the Institute of Standards and Quotas of the Ministry of Housing and Urban-Rural Development. Ministry of Housing and Urban-Rural Development of the People's Republic of China November 1, 2018

Introduction

Technical Specifications for the Whole Process of Crude Benzene Processing Engineering Design

Comparison of Core Technical Indicators

Parameter Category	Hydrogenation Process Indicators	Traditional Distillation Process	Unit
Hydrogen Purity	≥99.9%	-	Vol.LD
Sulfur Content Limit	≤20ppm	53ppm	mg/m³
Annual Operating Hours	>8000h

Core principles of equipment layout

According to Chapter 6.3-6.4 of the standard, the distance between the tubular heating furnace and the storage tank should be ≥50m, and the AEx explosion-proof pump should be used in hazardous areas. In a typical case, a steel plant optimized the piping system through 3D modeling, increasing the width of the maintenance channel by 42%.

Smart upgrade path

Technical milestones:

2015 version: Basic DCS control system
2020 revision: SIS safety instrument system integration
2023 trend: Digital twin platform docking

Key points of safety implementation

According to GB50160 specification:

Benzene storage tanks adopt double-layer mechanical seal + nitrogen covering system
The spacing between combustible gas detection probes is ≤7.5m
The service radius of emergency eyewash station is ≤15 seconds walking distance

GB/T 51325-2018 history

2018 GB/T 51325-2018 Coal coking crude benzene processing engineering design standard