Cleaning of oil storage tanks

Oil storage tank equipment is usually installed in various distribution points of petrochemical products in the petrochemical industry, used to store transported crude oil, gasoline, diesel and other products. The oil products transferred to underground and ground storage tanks often contain fine rust, impurities, moisture and oil bacteria; On the one hand, crude oil contains a large amount of substances such as sludge, paraffin, and other impurities. These fine rust and impurities accumulate and adhere to the bottom and inner walls of the storage oil tank, which cannot be cleaned and can cause blockage, corrosion, and leakage of the oil tank; The oil tank storing diesel fuel is constantly growing with oil bacteria in a water environment, and oil sludge grows. The sludge can easily enter the customer's vehicle engine oil injection system through the oil delivery system, blocking the oil injection system; On the other hand, if these impurities and oil bacteria are not removed and prevented from growing for a long time, it will directly affect the quality of the oil product. Therefore, the cleanliness and maintenance of underground and ground storage oil tanks directly affect the operational safety and oil quality of the petrochemical industry.

Cleaning of oil storage tanksThere are various methods such as manual cleaning, dry cleaning, steam cleaning, and chemical cleaning. High pressure water jet cleaning technology is a commonly used method for oil tank cleaning. Generally, underground and ground storage oil tanks are cleaned every few years to ensure the quality of the oil products. For a long time, cleaning work has been regarded as a highly dangerous engineering operation by the industry because it is a very tricky problem. Due to deficiencies in professional support and insufficient professional quality of construction personnel in terms of health, safety, and environmental protection, as well as the lack of a professional team in China for a long time, there is no scientific, safe, and standardized construction process for this projectCleaning of oil storage tanksWork procedures often result in personnel injuries and property losses during construction.

The working pressure of high-pressure water jet cleaning equipment for cleaning oil tanks is slightly higher. Compared with traditional chemical high-pressure water mechanical flushing, manual cleaning methods, etc., it has the characteristics of not corroding the cleaned object, not polluting the environment, and not damaging the object. Fast cleaning speed, high cleanliness, low cost, energy-saving, simple operation, easy to achieve mechanization and automation control, can safely clean under toxic, radiation, flammable and explosive conditions.

High pressure water jet cleaning has a wide range of applications and can basically meet the cleaning requirements under various conditions. For example, cleaning various condensers, heat exchangers, and industrial heat exchanger pipelines; High safety technology for cleaning various chemical storage tanks and other material reserves with high-pressure water jet cleaning of oil tanks; Topology diagram for transporting small and medium-sized substances during cleaningCleaning the old paint dirt layer is highly environmentally friendly, and high-pressure hot water can quickly remove the exterior wall paint; Clean the surface of ships and vehicles of microorganisms, oil stains, and rust deposits; Clean the surface oil stains of buildings, remove heavy oil stains, gum, dry asphalt, etc. under high pressure; Clean the cement on the building formwork, high-pressure water sandblasting can penetrate the concrete and visible steel bars for welding; The roughening of concrete in the construction industry; In the metallurgical industry, the cleaning and cooling of oxide layers and casting sand particles, as well as the sandblasting and rust removal of production lines, cutting of various materials, and removal of coking and raw material plate formation during the production process, are carried out.

The cleaning of oil storage tanks, based on the longer the oil is stored, the more sediment is generated by oxidation, which has a more severe impact on the quality of the oil. Once the metal of the oil tank corrodes and punctures, a large amount of oil will leak, causing economic waste and environmental damage, and even triggering fires. Therefore, it is necessary to inspect the bottom of the tank once a year to determine whether it needs to be cleaned. The cleaning cycle for various oil tanks related to oil storage requirements is once every five to eight years for crude oil; Clean the light oil and lubricating oil storage tanks once every three years; Heavy diesel oil storage tanks should be cleaned every two years. The cleaning and regular inspection of storage tanks can not only prevent oil contamination, but also provide users with an accurate understanding of the condition of their tanks, avoiding larger safety accidents.

1、 High pressure cleaning machine for oil transportation equipment cleaning

Oil transportation equipment generally uses hot water high-pressure cleaning machines and is equipped with three-dimensional tank washers and feeding mechanisms to complete the entire cleaning operation. When pure water enters the hot water tank through the high-pressure cleaning machine pipeline, steam is used to heat the water to50-70 ℃ is more suitable. The pure water required for the water supply pump is transported through pipelines.

Usually, a high-pressure cleaning machine water pump is used to transport water through pipelines to the core high-pressure water pump of the high-pressure cleaning machine. Then, the high-pressure water pump pressurizes ordinary pressure water into high-pressure water, which passes through the high-pressure cleaning machine pipeline to the control system and is finally cleaned by a three-dimensional rotating nozzle.

2、 High pressure cleaning machine pipeline cleaning

The high-pressure cleaning machine's pipeline cleaning nozzle drives the high-pressure hose forward, ultimately completing the pipeline cleaning operation. Some companies nowadays also install a cleaning device feed mechanism when using high-pressure cleaning machines to clean pipelines. It can be used for both internal and external cleaning of pipelines, but is limited by the length of the feed mechanism, so it is mainly used for cleaning short pipes.

3、 High pressure cleaning machine oil storage tank cleaning

Regularly cleaning the dirt and floating rust inside the oil storage tank is an important part of oil quality. High pressure water cleaning machines are generally equipped with three-dimensional tank washers for cleaning large oil tanks. The movement of the three-dimensional tank washer includes the rotation and revolution of the nozzle. The rotation of the nozzle is driven by its own hydraulic force. When the water jet of the high-pressure cleaning machine is sprayed from the nozzle, a reverse thrust is generated. The reverse thrust acting on the two nozzles arranged eccentrically generates hydraulic rotational torque, causing the two nozzles connected to the high-pressure cleaning machine nozzle to rotate on their own.

The revolution of the high-pressure cleaning machine nozzle mainly has two driving methods: self hydraulic drive and electro-hydraulic pneumatic drive. Its principle is that the rotational motion of the rotating body passes through a deceleration mechanism with a certain ratio, which drives the cleaner connected to the water pipe of the high-pressure cleaning machine to rotate around its fixed spindle, thereby achieving revolution