Knowledge of electromagnetic radiation: Introduction to the application field of microwave technology

2024-10-12

Knowledge of electromagnetic radiation: Introduction to the application field of microwave technology

Microwave technology is a new technology developed in the 1950 s. Microwave as an energy source for heating, drying, treatment, insecticidal, sterilization, etc., has been thirty years of history.

 

Industrial applications, the first success in food processing, the emergence of household microwave ovens to further expand the application of microwave heating technology. Now, microwave heating as a pro-technology by the attention of all walks of life.

 

Our unit is one of the earliest microwave application research units in China, and has made progress in some major projects. At present, it has been applied in China's food, health products, beverages, beer, traditional Chinese medicine, biological fertilizers, wood, paper, color printing, chemicals, ceramics, building materials, rubber and medical industries, and has achieved good economic benefits. Microwave technology should be combined with the characteristics of various industries for application or technological transformation. With the increasing expansion of the application field, the development prospect is broad.

 

At present, some new application fields at home and abroad mainly include the following aspects:
2-2, food, health products industry

Food is the most important thing for the people, and the food industry is rising at an unprecedented speed. The use of microwaves can sterilize, dehydrate, dry, puff, flavor, deodorize, thaw, urge aging and preserve food and health products. At present, it has been used in milk powder, bone strengthening powder, ginseng pills, bean powder, moon cakes, cakes, instant noodles, beef jerky, preserved meat, meat strips, meat floss, dried fish fillets, fish floss, shellfish, salted duck, thawed fish, meat and poultry eggs, pickles, potato chips, cashew nuts, peanuts, melon seeds, soybeans, liquor, rice wine, beer, milk, oral liquid, etc.

 

2-2, wood processing
Use925MHz, 40KW microwave dryer to 2-20cm thick wood drying, fast drying speed, wood does not crack, small deformation, at the same time can kill the eggs and larvae inside the wood, furniture, flooring, packaging materials use wood processing is appropriate. It is also ideal for curing the junction of plywood and plywood.

2-3, insecticidal sterilization

The application of microwave heating technology can sterilize and kill insects under low humidity, if microwave treatment of food and materials, in50-80 degrees can play a role in insecticidal sterilization. This field is: tobacco processing, bamboo, wood, paper, food, medicine, etc.

2-4, rubber industry

(2) 2450MHz-5-25kw microwave heating equipment is used as heating, and hot air is used for heat preservation after heating to vulcanization temperature, which can vulcanize ordinary rubber strips or sealing rubber strips with metal skeleton.
(2) the use of microwave heater, preheating of large tires, heating evenly, the entire vulcanization time can be shortened by about 1/3.

2-5, ceramic industry

(2) The pre-drying of the microwave in the ceramic industry can greatly shorten the pre-drying time of the ceramic without affecting the yield of the ceramic firing.
(2) ceramic sintering is a new world of microwave energy applications.

2-6. Raw coal desulfurization

(2) The sulfur in raw coal appears in the form of pyrite, which has a higher loss tangent than coal, so pyrite can be selectively heated and reflected by gas to generate sulfide. Coal is not affected.
(2) microwave acid-base desulfurization.

2-7. Flue desulfurization

The use of microwave energy technology can also be flue sulfur dioxide and nitrogen oxide reduction treatment, this technology than the existing flue treatment technology cost savings, but also very easy to operate.

2-8, microwave and other high ion technology

Microwave plasma technology has been used in the semiconductor production process, which can be etched, sputtered, vapor deposition, silicon oxide wafers; it can be used for surface treatment of metals, alloys, and non-metals; it can be used for high-temperature sintering of ceramics; it can be used for plasma spectrum analysis, can detect more than a dozen elements, and is also used to decompose toxic compounds.

2-9, microwave biological effects

Microwave biological effects have thermal effects and non-thermal effects. Thermal effect in medical treatment can be microwave physiotherapy, with radiotherapy and chemotherapy, can be diathermy cancer. In addition, microwave can be used to heat plasma, thaw and refrigerate organs, and microwave knife can also be designed, which is characterized by fast hemostasis and low postal blood volume during surgery.