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Recycling process for middle and low concentration oil gases

A low-concentration, oil-gas technology, applied in gas treatment, membrane technology, dispersed particle separation, etc., can solve problems such as the inability to extend environmental protection laws and regulations

Pending Publication Date: 2018-03-27
BEIJING SINO HYPRO PETROCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of relevant technology support, environmental protection laws and regulations cannot be extended to this field

Method used

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  • Recycling process for middle and low concentration oil gases
  • Recycling process for middle and low concentration oil gases

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] The process flow of the test device is as follows: figure 1 shown. The diameter of the adsorption bed is Φ50mm, the length is 500mm, and 1L of coal-based activated carbon is installed inside. The vacuuming equipment is a 10L / min scroll vacuum pump, and the concentrated oil and gas recovery equipment is a condenser and a recovery liquid tank. The raw material gas is benzene oil gas with a benzene concentration of 0.8v% and a nitrogen gas of 99.2v%. The raw material gas is fed at a rate of 1L / min, the adsorption space velocity is 60, the skimming pressure is 5 kPa(A), and the vacuum recovery pressure is 0.05 kPa(A) , vacuum cleaning pressure 1kPa (A), condenser condensing temperature 7 ℃. Equal time switching mode is adopted, the switching period is about 120min, of which the vacuum cleaning time is 90min, the nitrogen flow rate of vacuum cleaning injection is 0.01L / min, the test device runs continuously for 48h, and the benzene concentration in the tail gas is continuou...

Embodiment 2

[0083] The process flow of the test device is as follows: figure 2 shown. The adsorption bed has a diameter of Φ50mm and a length of 500mm. It is equipped with 0.2L activated alumina and 0.8L coal-based activated carbon. The vacuum equipment is a 10L / min scroll vacuum pump, and the concentrated oil gas recovery equipment is an absorption tower. The raw material gas is aviation kerosene oil and gas, the concentration of non-methane total hydrocarbons in oil and gas is 1.2v%, the air is 98.8v%, and the absorption oil is aviation kerosene. The raw material gas is fed at a speed of about 1L / min, and the adsorption space velocity is about 60. The switching mode of the raw material gas volume is set, and the switching feeding volume is set to 90L. Skimming pressure 6kPa(A), vacuum recovery pressure 0.05KPa(A), vacuum cleaning pressure 1.5KPa(A), vacuum recovery time 10min, vacuum cleaning time 70min, vacuum cleaning injection nitrogen flow rate 0.01L / min, vacuum breaking time 1mi...

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Abstract

The invention relates to a recycling process for middle and low concentration oil gases exhausted from chemical or oil product liquid storage tank or exhausted in a charging process. Organic matter components in the oil gases are adsorbed with an adsorbent in an adsorption step, and tail gas hardly containing organic matters is directly discharged into atmosphere; and a high-vacuum degree and highstrength organic cleaning combined regeneration manner is adopted during the regeneration of an adsorption bed, and organic matters in concentrated oil gas obtained in the regeneration process are recycled by virtue of concentrated oil gas recycling equipment. After the oil gas is treated by virtue of the recycling process, the concentration of organic matters in the exhausted tail gas can be farlower than the level of the most strict international industrial exhaust gas emission standard at present, and the recycling rate of the organic matters is more than 99.99%.

Description

technical field [0001] The invention relates to a process for recovering medium and low concentration oil and gas discharged during the storage or filling process of chemical products or oil liquid atmospheric storage tanks in the fields of petroleum, petrochemical, coal chemical, organic chemical and other organic liquid processing and storage and transportation. Background technique [0002] The treatment of organic waste gas is an important task of environmental protection. There are two main ways to treat organic waste gas. One is the recovery type, which is to separate the organic matter in the waste gas from other components, recover valuable organic components, or recover organic components and other component gases at the same time; two. It is a destruction type, which is to oxidize or decompose the organic components in the exhaust gas into environmentally harmless gas components, such as carbon dioxide and water, by means of oxidation or decomposition. Compared wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/047B01D53/14B01D53/18B01D53/00
CPCB01D53/002B01D53/0476B01D53/14B01D53/1487B01D53/18B01D2252/20B01D2253/102B01D2253/104B01D2257/702B01D2257/7027
Inventor 张国瑞胡小鹏
Owner BEIJING SINO HYPRO PETROCHEM TECH