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Method for cleaning oil tank

A technology for oil tanks and cleaning tanks, applied in the field of cleaning, can solve problems such as high cost, low recovery rate of oil products, and no guarantee of personnel safety, so as to achieve the effect of ensuring safety

Inactive Publication Date: 2012-12-19
JEREH ENERGY SERVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and provide a method for cleaning oil tanks, which mainly solves the problems of personnel safety, low recovery rate of oil products, damage to oil product quality, and long cleaning cycle in the existing oil tank cleaning methods. , high cost and secondary pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1, cleaning a crude oil tank of 50,000 cubic meters as an example, first transfer the residual crude oil in the tank to an adjacent tank, then inject inert gas into the tank and monitor it at any time, and control the oxygen content in the tank to 8% Then use the same oil to wash the sludge at the bottom of the tank, which can crush and dissolve the sludge in the tank, and through circular stirring, the effective components in the sludge can be recovered to the maximum; then wash the tank wall and bottom with warm water, and pass through The circulation and oil-water separation device continuously separates and recovers the oil until it is clean; then ventilates the tank through natural or forced methods until the gas detection is qualified (the oxygen concentration in the gas is greater than 20%, the H2S concentration is less than 10ppm, and the combustible gas concentration is low 2% of the lower explosion limit); finally clean up the residue in the tank.

[0...

Embodiment 2

[0018] Example 2, take the cleaning of a 100,000 cubic crude oil tank as an example, first transfer the residual crude oil in the tank to an adjacent tank, then inject inert gas into the tank and monitor it at any time, and control the oxygen content in the tank to 8% Then use the same oil to wash the sludge at the bottom of the tank, which can crush and dissolve the sludge in the tank, and through circular stirring, the effective components in the sludge can be recovered to the maximum; then wash the tank wall and bottom with warm water, and pass through The circulation and oil-water separation device continuously separates and recovers the oil until it is clean; then ventilates the tank through natural or forced methods until the gas detection is qualified (the oxygen concentration in the gas is greater than 20%, the H2S concentration is less than 10ppm, and the combustible gas concentration lower than 2% of the lower explosion limit); finally clean up the residue in the tank...

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PUM

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Abstract

The invention discloses a method for cleaning an oil tank. The method for cleaning the oil tank is characterized by adopting the following sequential steps under the totally closed condition: crude oil transporting, inert gas filling, homogenic oil cleaning, warm water cleaning, tank ventilating, tank slag removing and other pure physical and mechanical cleaning methods. After the method is adopted for cleaning, above 95% of residual oil in the tank can be recycled and reused, so the comprehensive benefit is obvious; the tank is cleanly and thoroughly cleaned, and even the metal can be seen; and the flame operation standard can be realized in the tank.

Description

technical field [0001] The invention relates to the technical field of cleaning, in particular to an oil tank cleaning method. Background technique [0002] Because crude oil contains a small amount of impurities such as mud, sand, and water, these impurities are deposited on the bottom and accessories of the oil storage tank, reducing the effective volume of the oil storage tank, and at the same time corroding the bottom and wall of the tank, resulting in oil leakage. There are major security risks. In order to protect the tank, reduce energy waste, and prevent safety accidents, oil storage tanks must be cleaned regularly according to regulations. Commonly used oil tank cleaning methods are as follows: 1. Manual method, affected by the weather, personnel safety is not guaranteed, oil recovery rate is extremely low, causing secondary pollution to the environment; 2. Steam method, affected by the weather, personnel safety is not guaranteed, Destroy the quality of oil produc...

Claims

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Application Information

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IPC IPC(8): B08B9/08
Inventor 王禹喻学孔舒振国贾志男
Owner JEREH ENERGY SERVICES
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