A kind of oil storage tank cleaning method
A technology for oil storage tanks and cleaning fluids, applied in cleaning methods and appliances, chemical instruments and methods, dehydration/demulsification by chemical methods, etc., can solve problems such as non-environmental protection, personnel poisoning, oil tank explosions, etc., and achieve improved results , Reduce processing costs, and strong applicability
Active Publication Date: 2021-11-12
北京大凤太好环保工程有限公司
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Problems solved by technology
[0005] In the prior art, manual cleaning is used to directly discharge the oil and gas in the oil storage tank into the atmosphere, which is not environmentally friendly, and it is easy to cause personnel poisoning and oil tank explosion
[0006] Aiming at the problem that manual cleaning is used in the prior art to directly discharge the oil and gas in the oil storage tank into the atmosphere, which is not environmentally friendly, and is likely to cause personnel poisoning and oil tank explosion, no effective solution has been proposed so far
Method used
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Embodiment Construction
[0096] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0097] The cleaning method of the oil storage tank comprises the steps of:
[0098] Step 1, oil storage and oil gas recovery, recovering the remaining oil and oil gas in the oil storage tank:
[0099] Step 1.1, the first time the oil is recovered, the oil in the oil storage tank is pumped to the oil storage tank:
[0100] Step 1.1.1, using a vacuum-assisted centrifugal pump to suck the oil stored in the oil storage tank, and pump the stored oil into the oil storage tank;
[0101] Step 1.1.2, when the vacuum-assisted centrifugal pump is evacuated, turn off the vacuum-assisted centrifugal pump through the PLC controller;
[0102] Step 1.1.3, start the pneumatic diaphragm pump through the PLC controller, suck the oil stored in the oil storage tank, and pump the stored oil into the oil storage tank;
[0103] Step 1.1.4, when the pneuma...
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The invention discloses a method for cleaning an oil storage tank, which includes: storing oil and recovering oil and gas, recovering the remaining oil and oil and gas in the oil storage tank; cleaning the oil storage tank, cleaning the inner wall of the oil storage tank with high-pressure water; Collect and store the cleaning liquid in the oil tank; filter the cleaning liquid, filter the cleaning liquid in the recovery tank, and separate the oil, water, and solids in the cleaning liquid; stir and separate the oil residue in the mixer, and separate out the oil residue in the oil, water, and solids; filter the water in the water supply tank, and use a three-stage filter unit to circulate and filter the water in the water supply tank; remove the sediment residue, remove the sediment residue in the oil storage tank; restore the tank , After the construction personnel finish cleaning the slag, install and fix the manhole cover on the flange of the manhole of the oil storage tank, and the recovery of the tank body is completed. The invention adopts the oil gas recovery unit to recover the oil gas squeezed out during the nitrogen filling process, eliminating the hidden dangers of personnel poisoning and oil tank explosion.
Description
technical field [0001] The invention relates to the technical field of oil storage tank cleaning, in particular to a method for cleaning an oil storage tank. Background technique [0002] The oil storage tank is a container for storing oil products, and it is the main equipment for refined oil products. During the long-term storage and transportation of refined oil storage tanks, a small amount of sand, soil, heavy metal salts and other impurities in the refined oil will settle and accumulate at the bottom of the storage tank together with water due to the density difference, forming a black and thick gel Substance, that is, oil storage tank bottom sludge. Impurities and moisture will reduce the quality of refined oil and affect the accuracy of oil product calculation; accelerate the corrosion of oil storage tanks, and in severe cases will cause perforation of the bottom plate, resulting in oil leakage accidents; generate and accumulate static electricity, resulting in stat...
Claims
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IPC IPC(8): B08B9/08B08B9/093B08B13/00B04B5/10C02F9/04C10G33/04
CPCB04B5/10B08B9/08B08B9/0936B08B13/00C02F1/001C02F1/283C02F1/40C02F1/52C02F9/00C10G33/04
Inventor 刘战平
Owner 北京大凤太好环保工程有限公司