Oil-gas recovery device and method in cleaning process of storage tank in petro station

Abstract

The invention belongs to the technical field of oil-gas recovery, and discloses an oil-gas recovery device and method in cleaning process of a storage tank in a petro station. The device comprises a frequency conversion draught fan, a leatherleaf type gas-liquid separator connected with the frequency conversion draught fan and a horizontal type activated carbon canister connected with the leatherleaf type gas-liquid separator, an inlet hand valve and an outlet valve are respectively arranged at the two ends of the horizontal type activated carbon canister, and a carbon filling port and a manhole are formed in the top of the horizontal type activated carbon canister; a baffle plate and a temperature meter are arranged in the horizontal type activated carbon canister, and a drain hand valveis arranged on the lower portion of the horizontal type activated carbon canister. The horizontal type activated carbon canister provided with the baffle plate is utilized, and oil gas in the underground storage tank in the petro station in the tank cleaning process is recovered to avoid uncontrol spreading of the oil gas; the device adopts a moving vehicle-mounted mode, and the oil gas recovery requirements of the underground storage tank in the cleaning process of the storage tank in the petro station is conveniently and quickly met; the device is not provided with electrical equipment, andthe safety of oil gas recovery operations of the underground storage tank in the cleaning process of the storage tank is fully ensured.

Description

technical field [0001] The invention belongs to the technical field of oil and gas recovery, and in particular relates to a device and method for recovering oil and gas in the process of clearing storage tanks of gas stations. Background technique [0002] At present, there are more than 100,000 gas stations in China, and there are about 400,000 buried storage tanks. According to the cleaning regulations of buried storage tanks, the storage tanks need to be cleaned every 3 to 5 years. If the gas station needs to be renovated, repaired or changed When storing oil, it is also necessary to clean the storage tank. Therefore, there is a large demand for tank cleaning at gas stations. In addition, during the tank cleaning process, the volatilized oil and gas in the storage tank enters the air. When encountering static electricity and electric sparks, it will cause disasters such as fire and explosion, and may also become a safety hazard. [0003] At present, the cleaning of burie...

AI Technical Summary

Problems solved by technology

[0005] Both of the above two current cleaning technologies for buried storage tanks in gas stations have the problem that oil and gas are directly discharged into the atmosphere, and there are potential safety hazards. Recycling of oil and gas not only solves potential safety hazards, but also meets the requirements of safety and environmental protection

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