What exhaust systems and precautions are required for the purification project decoration of the clean workshop? _Purification of knowledge_News_sz-ph

Exhaust has a very critical effect in the clean workshop, so the exhaust system is a more important purification engineering machinery and pharma machinery in the decoration of the clean workshop. However, not all the exhaust systems of clean workshops are the same. It is stipulated in the design specifications of clean workshops in my country. In some specific cases, the exhaust systems should be set up separately. Therefore, when decorating clean workshops, pay attention to the Exhaust (after the exhaust medium is mixed, it can produce or exacerbate corrosiveness, toxicity, combustion and explosion hazard and cross-contamination; the exhaust medium is toxic and non-toxic, and the toxicity is very different; flammable, explosive and general exhaust) Different exhaust systems are required. Let sz-pharma talk about which exhaust systems are needed for what kind of clean workshops in purification projects. 1. How to design the exhaust system for the decoration of the clean workshop 1. The general exhaust system of the clean workshop is divided into production auxiliary room and living room. Generally, the exhaust gas is generally discharged into the atmosphere without treatment. 2. Organic gas emission system: When various organic substances are used as raw and auxiliary materials in the production process, the gas of organic substances will be discharged at relevant places or equipment. Such places or equipment should be provided with exhaust devices. The organic gas in the exhaust system of the clean pharmaceutical cleanroom should be discharged into the atmosphere after corresponding treatment. 3. Acid gas discharge system: acid gas is discharged during the production process of the product. This kind of exhaust system is usually equipped with a wet absorption tower, which is discharged into the atmosphere after treatment. 4. Alkaline gas discharge system: acid gas is discharged during the production process of the product. The exhaust system of the clean workshop is usually equipped with a wet scrubber absorption tower, which is discharged into the atmosphere after treatment. 5. Hot gas discharge system: hot gas is discharged from various furnaces and high-temperature sterilization pharma machinery during the production process. Due to the high exhaust air temperature, the clean room can sometimes be treated with heat recovery. If the exhaust air volume is small or inconvenient to handle, it can be directly discharged into the atmosphere after taking necessary insulation measures. 6. Dust-containing exhaust system: Different production processes have different properties and concentrations of dust in the exhaust. For some with high dust concentration, dust removal equipment should be used to filter the exhaust gas and discharge it into the atmosphere after meeting the requirements. 7. Special gas exhaust system: For the production of special gas, chemical reactions in the exhaust system should be prevented, and the exhaust system should be divided. The clean workshop should choose a special waste gas treatment device, and discharge it into the atmosphere after reaching the standard. 8. Harmful and bad exhaust system in drug production: at the exhaust outlets of some special pharmacies, high-efficiency filters should be installed in the clean workshop to reduce pollution and discharge into the atmosphere. 2. Precautions for exhaust system in clean workshop 1. Exhaust system backflow We must understand what is the purpose of preventing backflow. This is mainly to prevent the air conditioning purification system from stopping the studio and outdoor air flowing back into the clean room, causing pollution and dust. The measure taken by the purification engineering company is to install a high-efficiency filter or a check valve in the appropriate position of the exhaust passage. To recover dust and prevent exhaust air from polluting the plant, most cleanrooms pass through cyclones before being released into the atmosphere. Separation devices such as dust collectors and baghouses can prevent dirty outdoor air from flowing back into the clean room. 2. Exhaust system equipment The material and coating of the air duct, regulating valve, check valve and other accessories of the exhaust system of the purification engineering workshop should be determined according to the nature of the harmful substances to be removed and the air environment conditions where they are located. Plastic air ducts can be used in air ducts to remove corrosive gases. Fire dampers should be installed where the exhaust pipes pass through the firewall. Particular attention should be paid to penicillin and other hyperallergenic, highly active and toxic drugs. Exhaust ports should be equipped with FFU or HEPA filters to minimize the risk of contamination from these drugs. A certain distance should be maintained between the air outlet of other medical air conditioning systems and the fresh air outlet. 3. Air supply and exhaust design In the purification project, the effect radius of the air outlet is small, and the movement direction of the indoor air flow is mainly determined by the air supply. Therefore, the relative relationship between air supply, exhaust and pollution sources, etc., is very important in the design. Generally, the exhaust and return air outlets are located downwind of the pollution source. After the clean air sent into the room is diluted by a small amount of nearby air that is not polluted by pollutants, the discharged pollutants have a certain momentum to move towards the exhaust direction when passing through the pollution source, and promote a large amount of discharged pollutants to move to the exhaust port. within the scope of action.

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