GB/T 36383-2018 in English
VALIDTreatment and disposal method for the high boiling from vinyl chloride rectification process
- Issued on:2018-06-07
- Implemented on:2019-01-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
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《GB/T 36383-2018氯乙烯精馏过程中高沸物处理处置方法》由TC294（全国废弃化学品处置标准化技术委员会）归口，主管部门为中国石油和化学工业联合会。
Introduction
1. Background and significance of standard formulation
GB/T 36383-2018 "Treatment and disposal of high-boiling substances in the distillation process of vinyl chloride" was formulated to regulate the safe treatment and rational utilization of high-boiling substances generated in the production process of vinyl chloride. This standard is under the jurisdiction of the National Technical Committee for the Standardization of Waste Chemicals Disposal, and the main drafting units include Inner Mongolia Shenglong Dadi Technology Co., Ltd., Xinjiang Zhongtai (Group) Co., Ltd., etc.
2. Comparison of Standard Frameworks
| Chapter Number | Content Overview | Keywords |
|---|---|---|
| 1 | Scope | Vinyl chloride distillation, high boiling point treatment |
| 3 | Terms and Definitions | High boiling points, vinyl chloride, ethylene dichloride |
| 4 | Composition | Vinyl chloride, ethylene dichloride, trichloroethylene |
3. Interpretation of Core Clauses
5.1 Principle of treatment and disposal method
The volatility difference of each component in the high-boiling material at different temperatures is utilized to separate through reflux of liquid phase and gas phase. Specifically, it includes the separation of vinyl chloride and ethylene dichloride, ensuring the recycling of light component vinyl chloride and further processing of heavy components such as ethylene dichloride.
5.2 Process description
- The high-boiling material enters the primary tower (vinyl chloride separation tower) for preliminary separation, controls the liquid level and temperature, and recovers high-purity vinyl chloride gas.
- The residual liquid enters the secondary tower (ethylene dichloride separation tower) to further separate high-purity 1,1-dichloroethane.
4. Process flow chart and parameter control
The process flow includes a high-boiling material storage tank, a primary tower, a secondary tower and an exhaust gas treatment system. The key process parameters are as follows:
| Equipment | Control parameters | Range |
|---|---|---|
| Vinyl chloride separation tower | Kettle temperature, reflux ratio | 65~85°C, 3~6:1 |
| Dichloroethane separation tower | Operating pressure, temperature | 15±5 kPa, 60~85°C |
5. Safety requirements and environmental protection suggestions
According to GB14544, high boiling point and ethylene dichloride storage tanks must be fireproof and explosion-proof, and direct discharge is prohibited. At the same time, it is recommended that:
- Regularly monitor the operating status of equipment to ensure the stability of process parameters.
- Strengthen employee training and familiarize yourself with emergency handling procedures.
- Establish a complete monitoring system to ensure that product quality meets standards.
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