According to different lamp tubes, ultraviolet sterilization lamps have thermal cathode low-pressure mercury vapor discharge lamps and cathode low-pressure mercury vapor discharge lamps; The hot cathode low-pressure mercury vapor discharge lamps can be divided into straight type, H-type, U-type tube, etc. from the appearance; new type Microwave food sterilization For different needs, it can be divided into low (no ozone), ozone, high ozone, etc. The portable microwave electrodeless ultraviolet sterilization equipment can be used for close mobile irradiation, and the ultraviolet lamp suspension irradiation can also be used. Small articles can be irradiated in the ultraviolet disinfection box. Different kinds of microorganisms have different sensitivity to ultraviolet rays. When using ultraviolet rays for disinfection, the radiation dose must be used to reach the radiation dose required to kill the target microorganisms. Microwave food sterilization manufactor The product of the irradiation intensity and irradiation time of the ultraviolet lamp used for irradiation dose at the surface of the irradiated object. Therefore, according to the irradiation intensity of the ultraviolet light source, the required irradiation time can be calculated.

VOCS catalytic combustion waste gas treatment equipment in paint shop: Catalytic combustion equipment is a kind of deodorization and deodorization waste gas treatment equipment. The concept of catalytic combustion is to use the catalytic incineration reaction of combustibles under the effect of catalyst and certain temperature conditions. Combustibles are burned under the effect of catalyst. Compared with direct incineration, catalytic incineration has a lower temperature and is quite safe. Catalytic principle and equipment composition (1) Catalyst is defined as a substance that can improve the rate of chemical reaction, control the direction of reaction, and keep its chemical properties unchanged before and after reaction. (2) The mechanism of catalytic effect The mechanism of catalytic effect is a very complicated problem, which is only briefly introduced here. In a chemical reaction process, the participation of the catalyst cannot change the original chemical balance, but only the speed of the chemical reaction. Before and after the reaction, the nature of the catalyst itself does not change. So, how does the catalyst speed up the response? The catalyst has not changed before and after the reaction, so has the catalyst participated in the reaction? In practice, the catalyst itself has participated in the reaction. It is because of its participation that the reaction has changed the original path, reduced the activation energy, and then accelerated the reaction speed. For example, the reaction A+B → C is transited through the central active complex (AB), that is, the reaction speed of A+B → [AB] → C is slow. After participating in catalyst K, the reaction is completed in an easy way: A+B+2K → [AK]+[BK] → [CK]+K → C+2K center no longer needs the transition from [AB] to C, and then the reaction speed is accelerated without changing the catalyst properties. (3) Process composition of catalytic incineration equipment: different emission occasions and different exhaust gases have different process flows. However, no matter which process flow is adopted, it is composed of the following process units. ① Waste gas pretreatment In order to avoid blocking of the catalyst bed and catalyst poisoning, it is necessary to pretreat the waste gas before entering the bed to remove the dust, droplets and catalyst poisons in the waste gas. ② Preheating equipment Preheating equipment includes waste gas preheating equipment and catalyst incinerator preheating equipment. Because all catalysts have a catalytic activity temperature, it is called catalyst ignition temperature for catalytic incineration. It is necessary to make the temperature of exhaust gas and bed reach the ignition temperature before catalytic incineration. Therefore, it is necessary to set up preheating equipment. However, for occasions where the exhaust gas temperature is high, such as enameled wire, insulating material, baking varnish, etc., and the temperature can reach more than 300 ℃, preheating equipment is not required. The hot gas heated by the preheating equipment can be arranged in the heat exchanger and bed. The heat source of the preheater can be flue gas or electric heating, and now electric heating is more used. When catalytic reaction starts, exhaust gas can be preheated with recovered reaction heat as far as possible. In the case of high reaction heat, waste heat recovery equipment should also be set to save power. The heat source temperature of preheated exhaust gas generally exceeds the catalyst activity temperature. In order to maintain the catalyst, the heating equipment should be kept a certain distance from the catalytic incineration equipment, so that the exhaust gas temperature can be evenly distributed. Starting from the need for preheating, catalytic incineration is applicable to the purification of continuous exhaust. If intermittent exhaust, not only each preheating needs energy, but also the reaction heat can not be recycled, which will result in great power waste. This should be noted in planning and selection. ③ Fixed bed catalytic reverberator is generally selected as catalytic incineration equipment. The planning of the reverberator shall be carried out according to the standard, which shall be convenient for operation, repair and catalyst loading and unloading. In the process planning of catalytic incineration, it is necessary to plan the built-up process of components according to the specific situation in the case of large air volume, that is, the preheater and the reverberator are installed separately, and the pipes are connected between them. For occasions with small air volume, catalytic incinerators can be selected to combine preheating and reaction, but pay attention to the distance between preheating section and reaction section. In the catalytic incineration of organic waste gas, the organic waste gas to be treated is easy to explode when mixed with air at high temperature, so the safety problem is very important. Therefore, on the one hand, it is necessary to control the mixing ratio of organic matter and air to keep it at the lower explosive limit; On the other hand, the catalytic incineration system should be equipped with monitoring and alarm equipment and explosion-proof measures.

Stainless steel wire woven filter screen is often used, 30-40 hole/cm filter screen is used for crude oil filtration, and 140-180 hole/cm filter screen is used for decolorization oil filtration. new type Microwave food sterilization The selection of filter medium will affect the clarification of filtered oil and fat, and whether the cake unloading is smooth. The filter media used in the grease industry are mostly woven media, Microwave food sterilization manufactor Common cotton fabrics such as canvas, twill and ordinary white muslin with 20 yarns and 5-8 strands.

Ultraviolet disinfection can ensure sterilization effect and water quality. This is a long-term effective sterilization technology. There is no reactivation reaction and no rebound of flora, ensuring complete disinfection effect and water quality safety. new type Microwave food sterilization Compared with other sterilization methods, UV has many obvious advantages, especially the difference from chemical disinfectants is that UV sterilizers will not bring toxic substances and residues into pure water, and will not change its chemical composition, odor and pH value. This function is very important in the pharmaceutical industry and related industries. Microwave food sterilization manufactor The chemical dosage of influent often changes the characteristics of the product. It can effectively kill all bacteria and viruses, and inactivate chlorine resistant microorganisms such as Legionella, Escherichia coli and Pseudomonas. Cryptosporidium, amoeba and bacteria.

Most of the microwave ultraviolet water treatment equipment is installed in the plant, but some are installed outdoors. When winter comes, the temperature also drops to below zero. Because the volume of water will increase significantly in the process of solidification and freezing, new type Microwave food sterilization Once the microwave and ultraviolet water treatment equipment and pipeline are iced, it will cause the water flowing part of the equipment and pipeline to break, resulting in economic losses. Then let's see how to maintain the microwave ultraviolet water treatment equipment in winter. Microwave food sterilization manufactor In order to increase the effective thermal insulation measures for outdoor microwave ultraviolet water treatment equipment and pipes, straw rope wrapped with plastic film can be used for thermal insulation, or 1.2-1.5cm thick insulation cotton or insulation cotton pipe can be used for tape wrapping.