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The role of high efficiency air filters in food plants
The role of high efficiency air filters in food plantsThe high-efficiency air filter is a device that traps dust from the gas-solid two-phase flow through the action of porous filter material and enables the gas to be purified.Air filters are used to purify the air with a low dust content and then send it into the room to ensure the process requirements of clean rooms and the cleanliness of the air in general air-conditioned rooms. For some clean rooms with high requirements, high-efficiency air filters are required for filtration. High-efficiency air filters are mainly used to trap particles of dust and various suspended matter below 0.5um. The high-efficiency air purifier is mainly composed of two parts: the filter element and the housing. The basic requirements are high filtration efficiency, low flow resistance, and the ability to be used continuously for a longer period to reduce the cost of consumables later on. For food factory design, clean room filter is an important equipment for clean room air purification, introduce the clean room high efficiency air filter installation in food factory design. Before the installation of high-efficiency air filters, the following work needs to be done: 1. The decoration and installation of the clean room in the food factory should be completed, and the clean room should be thoroughly cleaned and cleaned. 2. The clean air conditioning system of the clean room in the food factory needs to be cleaned, wiped, and carefully checked. If dust is found, it should be cleaned again to meet the cleaning requirements. 3. If the high-efficiency filter is installed in a technical mezzanine or lifting item, the mezzanine or lifting item should be cleaned and wiped to meet the cleaning requirements. 4. The high-efficiency filter for the food factory should be opened at the installation site for appearance inspection, including whether the frame, filter media, and sealant are damaged; whether the various dimensions meet the requirements of the drawings; whether the frame has burrs and rust spots (metal frame); whether there is a product certificate of conformity, and whether its technical performance meets the engineering design requirements. High-efficiency filters with air cleanliness class 5 or above (class 100) in clean rooms should be tested for leaks according to regulations and leak detection should be carried out before installation. After the food factory clean room and food factory purified air conditioning system reach the cleaning requirements, the purified air conditioning system needs to be put into the trial run (blowing air), with a continuous trial run time of 12-24 hours. After the blowing, the clean room is cleaned again and the HEPA filter is immediately installed. The empirical value of the life of the HEPA filter must not be arbitrarily extended for application. If the system design is unreasonable, the fresh air treatment is not in place, the clean room air shower dust control program is not scientific, the service life of the high-efficiency air filter is certainly shorter, some even use less than a year to have to replace, due to the different characteristics of the clean room, the choice of the high-efficiency air filter is firstly determined according to the different requirements of the clean room level, the degree of sterility, temperature, and humidity, the degree of fire resistance, anti-corrosion, etc. The high-efficiency air filter is High-efficiency air filters are an important piece of equipment in clean rooms. Under high temperature and high humidity conditions, it is advisable to use filters with metal dividers and metal frames; if there are requirements for corrosion resistance, it is advisable to use filters with plastic dividers and plastic frames; if there are requirements for fire resistance, all materials of the filters should be non-combustible, etc. However, the specific ones should still be defined according to the actual situation of the environment. |
