Application of GRAND and 2DGR Technique Method in Risk Assessment of Hydrogen Peroxide Production Process

摘要

Hazard reduction and elimination play a major role in designing a user-friendly plant in order to prevent accidents. To achieve this, risk assessment on the properties of the chemicals and the process during the early design stage is important to understand the hazards posed by the process involved. As we all know, Hydrogen peroxide, as a green environmentally friendly oxidant, is widely used in various fields of industry, and it causes a series of serious fire and explosion accidents due to its thermal decomposition explosion risk. In this paper, based on the principle of inherent safety, Graphical Descriptive Technique (GRAND) and the 2-Dimensional Graphic Rating technique (2DGR) technique method were applied on three processing routes for Hydrogen Peroxide production as a case study. Moreover, the root-cause of hazards were further analyzed. Among them, through the essential risk assessment of the three production processes, the hazard levels of different processes were identified and quantified. The 2DGR technology was used to analyze the two hydrogen peroxide production processes, such as the enthalpy method with similar process hazard level and the direct hydrogen synthesis method. The hydrazine method is the most dangerous process route. The root-cause of hazards analysis of the production process of hydrazine was used to determine the flammability and explosiveness of hydrogen. The short-term toxicity contact threshold of hydrogen peroxide and heavy aromatic hydrocarbons and the reactivity of hydrogen peroxide were the root causes of the hazard of the process route. Not only can quantitative risk assessment of hydrogen peroxide process, but also risk root cause analysis, which has important theoretical value for the inherently safer design and production of hydrogen peroxide.