【Haichuan Chemical Environmental Protection News】Sinopec Fifth Construction Company has developed two modular systems for VOCs and oil vapor recovery, as well as mechanical tank cleaning (including wastewater treatment)…
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According to Sinopec News Network: ============================= Report from Sinopec News Network: On May 18, two portable units for VOCs oil and gas recovery as well as mechanical tank cleaning (including wastewater treatment), developed independently by the Fifth Construction Company of the Refining and Chemical Engineering Group, had their product launch events held in Guangzhou. This series of products is suitable for the recovery and treatment of exhaust gases, cleaning agents, and wastewater in cleaning operations at gas stations, refined oil warehouses, crude oil storage facilities, etc. The petroleum refining and chemical industries are key sectors for VOCs control. Since taking on the project for the anti-seepage renovation and disposal of old tanks at the gas stations operated by Guangdong Petroleum Branch, Wujian Design Institute established a specialized technical team in October 2018 to address the issue of VOCs recovery from storage tanks. After more than a year, the oil and gas treatment methods and process routes for storage tanks were finally determined, and an on-vehicle VOCs oil and gas recovery skid unit was developed and assembled. This device adopts a condensation + adsorption process route and consists of four components: a condensation system, an adsorption system, an oil collection system, and an automatic control system. It features advanced technology, excellent safety performance, simple operation, high energy efficiency, great operational flexibility, and low construction difficulty. Moreover, this device has a wide range of applications and can address the VOCs emissions generated in operations at gas stations, refined oil warehouses, crude oil storage facilities, fuel oil depots, aviation fuel storage areas, ports, and chemical storage sites.
In December 2019, the device was tested at various gas stations in Guangzhou, and the test results were sampled and analyzed. Through the analysis of the verification indicators, it was found that this equipment can achieve a removal rate of ≥95% for non-methane total hydrocarbons at the organic waste gas emission outlet after oil and gas treatment ； The emission concentration of non-methane hydrocarbons in the exhaust gas collection system is less than 25 g/m3, meeting the parameter setting value of the prototype. This marks the successful development of the VOCs vapor recovery skid unit. To ensure the quality of oil, and in accordance with the regulations requiring regular cleaning of all oil storage tanks at present, cleaning is also necessary before changing the type of oil, modifying the oil tanks, or carrying out maintenance and installation of related equipment. Mechanical tank cleaning, as a new technology that is efficient, environmentally friendly, and safe, is gradually attracting widespread attention and being increasingly adopted. Taking the implementation of the project to prevent leakage and dispose of old tanks for Guangdong Petroleum Branch as an opportunity, and based on market demands and the overall situation in the cleaning industry, Wujian Design Institute conducted numerous investigations and tests before developing its own SFCC series of integrated cleaning equipment for small and medium-sized storage tanks. This series of devices utilizes a \"physical + chemical\" cleaning method. Currently, the R&D team at the design institute is assembling the fourth-generation cleaning equipment that integrates cleaning functions with hazardous waste treatment, enabling safe, environmentally friendly, and efficient operations for small and medium-sized storage tanks under 3000 meters in size. (Li Jingjing, Zhao Xing, Che Junquan)
The economic benefits are low, but it’s possible to cope with the environmental protection agency