A fragrance company in Fengxian District, Shanghai is a full investment of Japan Riken Spice Industry Co., Ltd. It was established on April 25, 2012 in the Chemical Industry Zone of Fengxian District, Shanghai, and is a production and sales company of Japan Riken Spice Industry Co., Ltd. in China. It mainly produces high quality edible flavors and is a highly concentrated product with high heat resistance. In recent years, due to the growing desire of Chinese customers to produce and supply raw materials in China, a new plant has been set up in Chuhua Road, Fengxian District, Shanghai. It is 14 acres.

Flavors and fragrances are important raw materials in the food, daily chemical, tobacco, and pharmaceutical industries in the national economy. A spice is a substance that can be smelled or tasted. Fragrance is a mixture of several, ten or even dozens of fragrances prepared by hand, or a mixture of various fragrances prepared by fermentation, enzymatic hydrolysis, thermal reaction, and the like. The flavor and fragrance industry belongs to fine chemicals. Compared with general chemicals, it has many varieties, fast replacement and small output, and most of them are produced in batch mode. Due to the wide variety of raw and auxiliary materials used in the production of flavor and fragrance, and the low odor threshold, the exhaust gas has many characteristics, complex composition and obvious odor. Therefore, how to effectively control the pollution of pollutants in flavor and fragrance production enterprises is an urgent problem to be solved.

The company produces 90 tons of edible flavors and fragrances per year. Although the production workshop has an exhaust gas ventilation and purification device, the existing activated carbon adsorption device has no desorption and regeneration system. The actual operation process is extremely saturated, and the exhaust gas emits odor. The height of the enterprise is caused by the exhaust gas problem. Pay attention to it, specially entrusted Fengjing Environmental Protection to transform its waste gas treatment system. After the installation and operation of the equipment, it effectively controlled the problem of odor and disturbing the people and created a harmonious social environment.

Fengjing Environmental Protection has conducted in-depth research on the waste gas project of the enterprise. The regenerative incineration purification process is the ultimate means of organic waste gas and odor treatment, but the daily production cycle of the enterprise is only 8h, and the measured concentration of organic matter is low, if the regenerative incineration process is adopted. , the operating cost is too high, so it is not appropriate to directly use the RTO furnace high temperature incineration treatment. The field test shows that the dielectric barrier discharge low-temperature plasma has good purification efficiency for the exhaust gas with low organic matter concentration, low operating cost, simple operation and maintenance, and can be stopped simultaneously with the production device. Therefore, water absorption is finally selected. + Low-temperature plasma cracking unit + UV photo-oxidation deodorization device, on-site inspection after the operation of the exhaust gas treatment device, the system operation is stable, the average discharge volume of the device outlet is 20537m3/h, and the odor concentration is reduced from 1738 to 130. Up to 92.5%.

Fengjing Environmental Protection For the production of exhaust gas of flavors and fragrances with complex composition, low organic matter concentration and large air volume, the water absorption + low temperature plasma cracking unit + UV photo-oxidation deodorizing device is effectively combined, the purification process is technically feasible and the economy is relatively reasonable. The field operation data shows that the odor concentration and non-methane total hydrocarbons in the purification unit meet the requirements of DB32/3151—2016 “Chemical Industry Volatile Organic Compound Emission Standards”, which effectively controls the adverse effects of the fragrance production waste on the surrounding area. Good environmental effects are of great significance for improving the quality of the regional atmospheric environment.