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Oil product storage tank protection method

A technology for storage tanks and oil products, which is applied in the field of protection of oil storage tanks, can solve the problems of large nitrogen consumption, easy to be pumped, and poor safety, and achieve the goal of reducing volatile emissions, reducing usage, and preventing gas phase explosions Effect

Inactive Publication Date: 2015-10-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that in the prior art, the nitrogen consumption is large, the pollution is large, the problem is easy to be deflated, and the safety is poor, and a new oil storage tank protection method is provided.

Method used

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  • Oil product storage tank protection method

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Effect test

Embodiment 1

[0019] A method for protecting an oil product storage tank, the device used includes two storage tanks (9), a buffer tank (1), a breathing valve (2), an oxygen content detector (4), a supplemental nitrogen gas pipeline (5), and a regulating valve (3), the top of the storage tank (9) is not provided with a breather valve. The gas phase space of the two storage tanks (9) is connected to the main discharge pipeline (10) through the tail gas pipeline, and the outlet of the total discharge pipeline (10) is connected to the top of the buffer tank (1), and the breathing valve (2) on the top of the buffer tank (1) ) one end is connected with the gas phase space of the buffer tank (1), the oxygen content detector (4) is arranged on the gas phase space of the buffer tank (1), and the supplementary nitrogen pipeline (5) is connected with the gas phase space of the buffer tank (1), adjusting The valve (3) is arranged on the supplementary nitrogen pipeline (5), and the oxygen content detec...

Embodiment 2

[0023] According to the conditions described in Example 1, only the number of storage tanks is 3, at least 81% of nitrogen can be saved, and the safety effect achieved is exactly the same. At the same time, it can avoid the spread of fire, the pressure of the storage tank or being deflated.

Embodiment 3

[0025] According to the conditions described in Example 1, only the number of storage tanks is 4, at least 85.8% of nitrogen can be saved, and the safety effect achieved is exactly the same. At the same time, it can avoid the spread of fire, the pressure of the storage tank or being deflated.

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Abstract

The invention relates to an oil product storage tank protection method, and mainly solves the problems of large nitrogen consumption, large pollution, easy shrunken and poor safety problems in the prior art; tail gas pipes of at least two storage tanks are connected with a total discharge pipe; an exit of the total discharge pipe is connected with a buffer tank; a gas phase zone of the buffer tank is provided with an oxygen content detector, and provided with a nitrogen supplement pipe and an adjusting valve; the adjusting valve on the nitrogen supplement pipe can be adjusted according to detection data of the oxygen content detector; the top of the buffer tank is provided with a breather valve; a tail gas outlet of the breather valve is connected with an oil gas recovery device; the tail gas pipe of the storage tank is provided with a flame arrester; the upper portion of the buffer tank is connected with a safe water seal through a pipe, thus solving the said problems; the oil product storage tank protection method is applied to oil product storage tank protection.

Description

technical field [0001] The invention relates to a method for protecting an oil product storage tank. Background technique [0002] The gas phase of the oil storage tank is often in an explosive atmosphere. In order to prevent the gas phase explosion of the oil storage tank, the most effective way is to use the gas phase nitrogen protection method to supplement nitrogen from the breathing valve of the storage tank. As the storage tank is running, the nitrogen is continuously replenished. in and out. For the operation of the entire tank farm, this mode of operation requires a huge amount of nitrogen, and the exhaled nitrogen contains saturated organic volatiles, which will cause a lot of waste of nitrogen and increase the operating cost of the enterprise. At the same time, the tail gas containing organic volatiles will pollute environment. Moreover, once the breathing valve fails, it will cause the storage tanks in the entire tank area to operate under overpressure or negati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D90/44B65D90/48
CPCB65D90/44B65D90/48
Inventor 石宁董国胜孙冰费轶姜杰
Owner CHINA PETROLEUM & CHEM CORP