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Safe and environment-friendly method for protecting storage tanks

A safe, environmentally friendly, storage tank technology, applied in containers, packaging, transportation and packaging, etc., can solve the problems of high cost, large amount of nitrogen protection gas, and difficult to deal with odorous gases such as sulfur, so as to reduce production costs and reduce gas. Treatment process, the effect of reducing nitrogen consumption

Inactive Publication Date: 2015-02-25
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is that in the prior art, the amount of gas used for nitrogen protection is too large, the cost is high, and the gas containing sulfur and other odors is difficult to handle. It provides a new method for protecting the safety and environmental protection of storage tanks.

Method used

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  • Safe and environment-friendly method for protecting storage tanks

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Embodiment 1

[0016] The purpose of the present invention is to protect the safety of the storage tank by using the sulfur-containing gas produced by the liquid itself in the storage tank and part of the external nitrogen, and send the excess gas to the torch or incinerator for treatment, so as to protect the safety and environmental protection of the storage tank.

[0017] The schematic flow diagram of the present invention is as figure 1 As shown, it includes four storage tanks (1, 2, 3, 4), a gas buffer tank (5), pressure gauges (6, 7, 8, 9, 10) on each tank, and resistors on each gas phase pipeline. Firearms (11, 12, 13, 14, 15, 16), pressure relief valve (17), compressor (18), gas main pipe (19).

[0018] The four storage tanks (1, 2, 3, 4) and the buffer tank (5) are connected by gas phase pipelines to form a gas main pipe (19), and the gas charging pipe (21) of the gas main pipe passes through the compressor (18) and the buffer tank (5 ), the return pipe (20) of the gas main pipe is...

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Abstract

The invention relates to a safe and environment-friendly method for protecting storage tanks to mainly solve the problems that in the prior art, the gas consumption of nitrogen protection is excessively large, cost is high, and sulfur-containing gas and other peculiar smell gas are hard to treat. According to the safe and environment-friendly method for protecting the storage tanks, the gas produced by liquid in the storage tanks enters a compressor (18) through a main gas pipe (19) and an inflation pipe (21), the gas is pressurized by the compressor (18) and stored in a buffering tank (5) to serve as one part of positive-pressure protection gas, when the gas stored in the buffering tank (5) cannot meet the positive-pressure protection of all storage tanks, the nitrogen from a nitrogen inlet pipeline (22) is used for performing supplementation, and when the pressure stored in the buffering tank (5) exceeds the designed pressure, the residual gas is sent to a torch or combustion furnace through a torch or combustion furnace leading pipeline (22), the problems are well solved through the technical scheme, and the method can be used in storage tank protection.

Description

technical field [0001] The invention relates to a safety and environmental protection method for a storage tank. Background technique [0002] In petroleum refining and chemical enterprises, sulfur-containing and oily sewage is produced along with production, and storage tanks are required for storage, oil-water separation and purification treatment. At present, most sewage tanks, cold coke water tanks, and alkali slag tanks are made of carbon steel. In the part above the liquid level in the tank, the sulfur-containing gas in the tank contacts with the tank wall and reacts to generate ferrous sulfide. When feeding into the tank, the gas pressure above the liquid level in the tank rises, and the gas starts to be discharged outside through the breathing valve or water-sealed tank. When the material is discharged from the tank, the gas pressure above the liquid level in the tank decreases, and starts to pass through the breathing valve Or the water-sealed tank sucks air inwar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D88/04B65D90/22
CPCB65D88/04B65D90/22
Inventor 卢均臣王延平
Owner CHINA PETROLEUM & CHEM CORP
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