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Oil gas recovery method

A recovery method, oil and gas technology, applied in separation methods, chemical instruments and methods, steam condensation, etc., can solve problems such as complicated processes and inability to be used directly

Active Publication Date: 2009-01-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the process in this method is relatively complicated. When gasoline is absorbed, the components of gasoline and the original gasoline often have a large change, so it cannot be used directly.

Method used

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  • Oil gas recovery method

Examples

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Effect test

Embodiment 1

[0034] In this example, condensation-adsorption is used to treat benzene-containing gas at a temperature of 50°C and a concentration of 3000 mg / m 3 , mechanical refrigeration method, the adsorbent is activated carbon, the oil gas temperature at the inlet of the condenser is 8°C, the condensation temperature is -55°C, the oil gas temperature at the inlet of the adsorption tower is -5°C, and the adsorption space velocity is 1000h -1 , the gas velocity is 0.3m / s, and the outlet temperature of the adsorption tower is 10°C. After treatment by this process, the concentration of benzene in the outlet gas is less than 10mg / m 3 , The recovery rate is 98% (mass).

Embodiment 2

[0036] In this embodiment, the exhaust gas is 20% (volume) oil gas, the temperature is 35°C, the oil gas temperature at the inlet of the condenser is -5°C, the condensation method is mechanical refrigeration, and the condensation temperature is -75°C. The adsorbent adopts carbon molecular sieve, the oil gas temperature at the inlet of the adsorption tower is -15°C, and the adsorption space velocity is 2000h -1 , the gas velocity is 0.2m / s, and the outlet temperature of the adsorption tower is 5°C. After this process, the outlet oil and gas concentration is less than 10mg / m 3 , Recovery > 99.9% (mass).

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Abstract

The present invention relates to an oil gas recovery method. The oil gas recovery method adopts an oil gas-reclaiming technique including cooling, condensing, adsorption, vacuum regeneration and regenerated gas circulation, and the cooling medium used by the cooling step adopts the condensed oil gas. Compared with the prior art, the oil gas-reclaiming method has the advantages of high oil gas recovery rate, low energy consumption, no potential safety hazards, etc., and the tail gas can measure up to the emission standard. The oil gas recovery method is applicable to the oil gas recovery in cases such as oil loading and unloading on vehicles or boats, oil cut-off at crude oil depots and large and small tank breathing.

Description

technical field [0001] The invention provides an oil gas recovery method, specifically an oil gas recovery method for recovering hydrocarbons from waste gas containing volatile hydrocarbons and making the tail gas meet the discharge standard. Background technique [0002] Crude oil, gasoline, some chemical solvents such as benzene, toluene, xylene production workshops, coatings and other organic solvents contain or have highly volatile light hydrocarbon components. During the transportation, transfer, and sales of processed products (gasoline, diesel, etc.), a large amount of oil vapor (oil gas) escapes into the atmosphere. The oil vapor mentioned here is usually called VOCs, also known as non-methane hydrocarbons . At present, most railway tank cars, automobile tank cars, and oil tankers are filled with open tops. Especially in the process of gasoline loading and unloading, the interface between the oil tank and the truck is not strictly sealed, and there is no collection ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D5/00B01D53/04
CPCY02P70/10
Inventor 郭兵兵许谦孙永琳侯学杰
Owner CHINA PETROLEUM & CHEM CORP
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