Household Oxygen Generator is a type of machine for producing oxygen, its principle is to use air separation technology. First, the air is compressed at a high density and then the different condensation points of each component in the air are used to separate the gas and liquid at a certain temperature, and then rectify it to separate it into oxygen and nitrogen. In general, people are used to calling it an oxygen generator because it is mostly used to produce oxygen. Because oxygen and nitrogen are widely used, oxygen generators are also widely used in the national economy. Especially Homecare Oxygen Concentrator and Household Medical Devices for hospital and household.
The first countries in the world to produce oxygen generators were Germany and France. The German Linde Company made the world's 10th m3/s oxygen generator in 1903. Following Germany, the French Air Liquide Company also began to produce oxygen generators in 1910. Since 1903, the oxygen generator has a history of 100 years.
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Biodebinding technology
Raw ramie obtained by scraping by the farmers must be degummed because it contains 22% to 30% of non-fibre materials (pectin, hemicellulose, lignin, etc., commonly known as “gumâ€). Pure fibers are used in textiles. At present, ramie degumming methods mainly include chemical and biological methods. Production practice proves that chemical degumming method. There are deficiencies such as high costs, high energy consumption, reduced fiber production and quality, and serious environmental pollution. With the shortage of global resources and energy and the enhancement of environmental protection awareness, new technologies for efficient and energy-saving and low-pollution ramie biological degumming have received increasing attention. First, the main content of the new biological degumming test The second generation of biological degumming technology (Patent No.: ZL95ll2564, 8) has been successfully researched by the Bast Fiber Research Institute of the Chinese Academy of Agricultural Sciences. Its main features are: the selection by the researcher Liu Zhengchu A new strain, T85-260, which has a fast propagation rate and extensive culture conditions, produces the key enzymes for degumming. Under mild conditions, raw ramie with different varieties, origins, seasons, and scraping quality can be processed into loose, soft and pure products. Ramie fiber (dried hemp). The process flow is: bar--→ cage--→ bacteria species preparation--→inoculation one-one-→bio-degumming--one--→wash mahse one-one→→oil one by one—→ drying. 1. Bars: Separate large batch raw ramie sacks according to variety, lot number and grade, then open the sacks, spread the small linen bundles in the sacks one by one, shake loose and remove the debris, mud and other debris, and then tie them into suitable weights. , elastic suitable mahjong. 2. Loading cages: The bar will be woven into a bark, and each cage will be filled with 500kg of hemp, ensuring that the cage is tight and moderate. 3. Preparation of strains: The cultured bacteria can be propagated for 5 to 6 hours under suitable conditions. 4. Inoculation: Diluted culture broth is diluted at a certain bath ratio and soaked with raw ramie for several minutes. 5. Biological degumming: After the inoculated raw castor is fermented for 5-7 hours under proper conditions, the mahjong is softened and the fibers are dispersed. 6. Washing linen: It can be disc-typed with a disc-type copying machine, but it can also be used with a roller-type straight-opening machine or a linen washing machine. Due to the key enzyme of degumming T85-260, the colloid is completely collapsed. Easy to remove, therefore, biological degumming laundering requires a light and heavy wash. 7. Oil stain: Due to the fact that the surface of the biological degumming fiber is not as smooth as the chemical degumming, the specific surface is large, and the oiling rate is relatively high when the oil is stained. 8. Drying: Drying methods include drying, drying or drying. Second, the advantages of biological degumming technology Compared with conventional chemical degumming process, biological degumming has the following advantages. 1. Low cost and low energy consumption. Among them, about 60% of the input of technological aids is saved; the degumming agent input is reduced by more than 80%; the energy consumption is reduced by 44%. 2. Fiber production is high and quality is good. Due to the “directional blasting†of ramie gum by the degumming enzyme, the damage to the fiber caused by strong acid and strong alkali under high temperature can be eliminated, and the degumming production rate can be increased by 5%-6%, and the test fiber can be preserved due to its morphological structure. The amplitude improves its spinnability. 3. Environmental pollution is light. The emission of inorganic and organic pollutants is reduced by 80% and 50%, respectively. At the same time, the wastewater from bio-degumming is easy to handle and the cost of pollution control can be saved. 4. Safe and economical. It can reduce labor intensity, improve the working environment, and improve the personal safety factor. 5. The potential benefits of lean hemp are significant. Can improve combing combing rate of 5% -6%, combed bar without hard strips, and little wire; pure linen yarn dry, mixed, hairiness, strength, product multi-level indicators improved significantly; Hang, young, weaving operations, machine failure rate is low. The industrial production practice proves that this technology is suitable for the transformation of the original ramie chemical degumming enterprises, and is suitable for the construction of township enterprises in the ramie production areas, and the processing of raw ramie into high value-added industrial semi-finished products or finished products in situ.