Styrene storage tank VOCs safety recovery system and recovery process

A recovery system and styrene technology, which is applied in the recovery of liquid hydrocarbon mixtures, petroleum industry, packaging, etc., can solve the problems of storage tanks exceeding the pressure range, large nitrogen consumption, and large dependence on pressure sensors, so as to save nitrogen consumption and improve the treatment effect Excellent, increase the effect of investment

Active Publication Date: 2022-02-25
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned prior art consumes a lot of nitrogen and relies heavily on the pressure sensor. Once the pressure sensor fails, it may cause the operation of the storage tank beyond the pressure range

Method used

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  • Styrene storage tank VOCs safety recovery system and recovery process

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Embodiment Construction

[0030] The present invention proposes a styrene storage tank VOCs safe recovery system and recovery process. In order to make the advantages and technical solutions of the present invention clearer and clearer, the present invention will be described in detail below in conjunction with specific examples.

[0031] Such as figure 1 As shown, the styrene storage tank VOCs safe recovery system of the present invention includes a styrene atmospheric storage tank one 1, a styrene atmospheric pressure storage tank two 2, a suction cryocooler one 9, a suction cryocooler two 10, Suction coolant window 11, suction coolant window 2 12, first breathing valve 5, second breathing valve 6, first suction port muffler 7, second suction port muffler 8, suction wind 16 And flame arrester 19.

[0032] The exhaust port of the styrene atmospheric storage tank one 2 is connected to the suction fan 16 through the first pipeline, and the suction cryocooler one is installed on the first pipeline, and ...

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Abstract

The invention discloses a safe recovery system and recovery process for VOCs in styrene storage tanks, and belongs to the technical field of petrochemical environmental protection management. It includes styrene normal pressure storage tank one, styrene normal pressure storage tank two, suction cryocooler one, suction cryocooler two, suction coolant window one and suction coolant window two. In styrene normal The exhaust port of the pressure storage tank 1 is connected to a suction fan through a first pipe. The suction cryocooler 1 is installed on the first pipe. The suction cryocooler 1 is used to cool the mixed gas, in which the cooling liquid passes through The second pipe connected to the suction cryocooler leads to the underground waste oil tank; the suction fan is also connected to the steam superheating furnace burner, and the styrene and air mixed gas extracted by the suction fan flows into the steam superheating furnace burner incineration. The invention can prevent environmental pollution caused by the volatilization of styrene gas, ensure the safety and reliability of the recycling process, and requires almost no nitrogen consumption during normal operation.

Description

technical field [0001] The invention relates to the technical field of petrochemical environmental protection treatment, in particular to a VOCs safe recovery system and recovery process of a styrene storage tank. Background technique [0002] "Code for Design of Vertical Cylindrical Steel Welded Oil Tanks" (GB50341-2014) stipulates that the operating pressure range of fixed roof oil tanks is -0.295~18KPa. The breathing valve on the top of the conventional styrene storage tank directly discharges to the air. When the pressure of the storage tank is higher than 18KPa, the breathing valve opens and the gas containing styrene and other organic substances in the gas phase space of the storage tank is discharged into the air, causing environmental pollution. When the pressure of the storage tank is lower than -0.295KPa, the breathing valve is opened to inhale air; in order to ensure that the air does not enter the storage tank, forming a negative pressure state and generating exp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D90/30
CPCC10G5/06
Inventor 陈文武牛鲁娜邱枫黄贤滨韩磊刘艳
Owner CHINA PETROLEUM & CHEM CORP
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