Ventilation method suitable for exhaust gas generation site

Abstract

In a ventilation method suitable for an exhaust gas generation site, a pipeline ventilation array is arranged in the underground part of the exhaust gas pollutant generation site, exhaust pipes for discharging exhaust gas downwards are arranged in the exhaust gas pollutant generation site, the exhaust pipes are connected with the pipeline ventilation array, and valves are arranged in the exhaust pipes; the pipeline ventilation array is connected with an induced draft fan to discharge exhaust gas pollutants; and fresh air is input from the upper layer of the exhaust gas pollutant generation site. The input amount of the fresh air can be worked out according to the concentration of locally generated pollutants and the prescribed limit specified in GBZ1 of Hygienic Standards for the Design ofIndustrial Enterprises, and then the amount of needed diluent air is calculated. By means of the method, treated and purified exhaust gas can be delivered back to a workshop at a lower position, thefresh air related to human health is input from the upper layer, different ventilation measures under different release intensities of pollutants in different regions can be achieved, and the concentration of poisonous and harmful pollutants in a space can reach the standard.

Description

technical field [0001] The invention relates to a ventilation method for hazardous waste warehouses or distributed waste gas generation workshops, and belongs to the technical field of ventilation and ventilation. Background technique [0002] The molecular weight of most VOCs (volatile organic compounds) is greater than the average molecular weight of the air. The management of VOCs or odors generated during temporary storage and production mostly refers to the maximum allowable concentration limits and According to the process calculation requirements of the preliminary design of the project, the air change coefficient of the workshop (3-6 times / hour) is usually selected by analogy. Due to the huge area of ​​warehouses or workshops, for hazardous waste warehouses, materials with different volatile properties are stacked separately in the warehouse, and it is difficult to unify the unified ventilation frequency of the whole warehouse and the ventilation requirements corresp...

AI Technical Summary

Problems solved by technology

The molecular weight of most volatile gas pollutants or dust is greater than the average molecular weight of the air, and it is easy to sink to the ground in workshops and warehouses. Therefore, ventilation design specifications generally require that the distance between the discharge and suction ports should be less than 30cm from the ground. Even at this height, sinking Pollutants such as HCl and most of the VOCs diffuse along the ground, making it difficult to complete the up-to-down and up-to-standard ventilation process

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