YB/T 5022-2016 in English
VALIDCrude benzol
- Issued on:2016-10-22
- Implemented on:2017-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$214.00
| Standard No: | YB/T 5022-2016 |
| Document status: | VALID |
| Title in English: | Crude benzol |
| Title in Chinese: | 粗苯 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2016-10-22 |
| Implemented on: | 2017-04-01 |
| Superseding: |
YB/T 5022-1993 Crude benzol
|
| Professional Classification: | YB-Metallurgy |
| Related Topics: | yb t5022 1993
High quality crude benzene yb/t4506-2016 Crude benzene Crude benzene tank Crude ethylbenzene Crude benzene products Industrial crude benzene Crude benzene products Crude benzene execution Crude benzene quality yb/t 5022-2016 |
本标准规定了粗苯的技术要求、试验方法、检验规则以及包装、标志、运输、贮存和质量证明书及安全注意事项。本标准适用于高温炼焦过程中所得的粗苯和轻苯。
Introduction
Core Changes in the Standard Revision
| Revision Dimensions | 1993 Edition of the Standard | 2016 Edition of the Standard | Technical Significance |
|---|---|---|---|
| Hazardous Substance Control | Undefined Sulfur and Chlorine Indicators | Newly Added Sulfur ≤7000mg/kg, Chlorine ≤15mg/kg | Strengthen environmental protection requirements and reduce subsequent processing pollution |
| Detection Methods | Basic Physical Property Testing | Newly Added Modern Instrumental Analysis Methods such as Gas Chromatography and Ultraviolet Fluorescence | Improve detection accuracy to ppm level |
| Safety Specifications | Simple packaging requirements | Eight new safety clauses, including MSDS documents and electrostatic protection | Complies with GHS Global Harmonized Classification of Chemicals |
Analysis of key technical indicators
1. Density control requirements
The density range of crude benzene for processing is 0.871-0.900g/cm³. When petroleum wash oil is used as the absorbent, the lower limit is relaxed to 0.865g/cm³. This indicator directly affects:
- Aromatic hydrocarbon recovery rate (density is positively correlated with benzene content)
- Distillation energy consumption (density difference affects separation efficiency)
2. Distillation range quality control
Critical control points for distillate volume before 180℃ ≥93% (for processing):
| Distillation range section | Control requirements | Corresponding components |
|---|---|---|
| Before 75℃ | ≤3% (light benzene) | Light components such as carbon disulfide |
| 96% distillation temperature | ≤150℃ | Benzene-toluene fraction |
Application of modern detection technology
Determination of triphenyl content by gas chromatography
Adopting 60m×0.32mm capillary column, programmed temperature conditions:
40℃(10min)→3.5℃/min→90℃(15min)→5℃/min→230℃(10min)
Key control parameters:
- Split ratio 100:1
- FID detector temperature 300℃
- Internal standard dioxane (chromatographic grade)
Determination of sulfur content by ultraviolet fluorescence method
Adopting
Comparison items Gravimetric method UV fluorescence method Detection time 4-6 hours 8 minutes Sample amount 100g 8μL
Implementation recommendations and risk control
Packaging and transportation specifications
- Tankers must be sealed with lead and marked with the flammable liquid symbol specified in GB190
- An electrostatic discharge device (resistance ≤ 10Ω) must be installed in the tank area
- Water layer control: ≤5mm for tankers, ≤1mm for drums
Emergency Plan
Three-step leak handling method:
- Immediately cut off the fire source (flash point -11°C)
- Cover with foam/dry powder fire extinguishing agent
- In case of skin contact, rinse with soapy water for 15 minutes
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