Study On The Chemical Industry Enterprise Environment Risk Assessment And Management

As living standards improve, more and more people to produce chemicals into life, and in the process of production of such products tend to be a lot of toxic, hazardous, flammable, ex-plosive hazardous substances, the resulting major incidents of fire, explosion and poison lea-kage also occurred frequently, seriously endanger human health, socio-economic and living environment.This paper is divided into three parts, the production of isopropyl alcohol to acetone for example, the chemical production equipment were carried Mongolia, Germany and France project environmental risk assessment; environmental impact on the normal atmospheric condi-tions, predictive analysis; work of non-normal Under environmental risks under conditions si-mulated spill; propose specific management measures. The main results are as follows:1) Acetone, isopropanol tank before compensation, all the indicators are highly disastrous D, cell toxicity categories, category indicators and gas explosion explosive areas are of high index, especially fire accord index is very high, indicating that In the area of tank fire risk is greatest, all also belong to extreme danger rating; during exponential compensation after a fire and explosion index dropped to a low, all reduced to moderate risk rating acetone, isopropanol reduced height1class. The reaction column, all the indicators are also highly disastrous frac-tionator, but the reaction column, the distillation column is a severe indicator of gas explosion indicator, which is one of the reaction column as the main raw material is hydrogen, main frac-tionator Runoff is the use of gas-liquid separation, even after a gas explosion during the com-pensation index is still a very high; addition, all risk score two units belong to the extreme be-fore compensation, compensation fell after performing a high lclass. Index of all four units be-long to highly compensated before the catastrophic category, all the risk ratings also belong to the extreme category, the initial results of the evaluation of all the indicators are relatively high, seen through the table for the different reaction unit to take Environmental risk management measures different focus, after the final compensation calculation, effectively reducing the risk category unit risk is the risk that the unit is acceptable units, thus providing reliable data to support the theory of environmental risk management.2) Under normal circumstances, the project emissions acetone, isopropanol time, hour and sensitive targets at the regional environment, the daily average, annual average concentra-tion values are very small, can satisfy the appropriate environmental quality standards; acetone hours daily, with an average annual the maximum concentration0.19956mg/m3,0.06228mg/m3,0.00476mg/m3, well below the evaluation criteria0.8mg/m3, isopropanol hours daily, the maximum annual average concentration0.15965mg/m3,0.04982mg/m30.00381mg/m3, well below the evaluation criteria0.6mg/m3, and therefore the plant boundary protected area boundary ground concentrations are standard; When abnormal discharge, ace-tone hour, daily, with an average annual concentration value to meet the appropriate environ-ment quality standards, isopropanol phenomenon appears excessive in protected area bounda-ries, new beach farms and other sensitive target landing at the maximum hourly concentrations greater impact on sensitive targets and the surrounding atmosphere. Under normal circums-tances, a non-pollutant concentrations higher than normal. Therefore, regular emission control device for project implementation, maintenance, testing and replacement, additions backup de-vice to ensure the normal operation of process equipment operation, to avoid accidents, can ef-fectively reduce the impact of pollutants on the surrounding conservation objectives.3) The continued leakage of acetone20min, within100m downwind, beyond the "workplace occupational exposure limit harmful factors" relevant standards within the down-wind1320m, beyond the "industrial enterprises to design health standards" standards. When materials spills, pollutant concentration distribution within the scope of the evaluation were not downwind reaches or exceeds the LC50lethal concentration of pollutants, mainly in the produc-tion sphere of influence in the region and around the enterprise, the atmosphere at the target without excessive protection of atmospheric protection goals less affected. After the accident, must be completed as soon as possible within the scope of the park workers, the protection ob-jectives of the evacuation, evacuation, to prevent causing acute poisoning. The spilled material should be properly collected in the workshop or storage area, the substance in the plant’s con-trol to avoid impact on the conservation objectives within the scope of the evaluation and so on.