Treatment method of storage tank-dissipating stinking sulfur-containing waste gas

A waste gas treatment and dissipation technology, applied in separation methods, chemical instruments and methods, steam condensation, etc., can solve problems such as danger and safety, failure to regenerate activated carbon, etc., to reduce operating costs, improve gas-liquid contact effect, and increase absorption rate and the effect of operational elasticity

Active Publication Date: 2010-12-01
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When this patent is aimed at the purification of hydrocarbon waste gas with high concentration, there are also the above-mentioned dangerous safety problems caused by excessive heat of adsorption
[0013] The above-mentioned oil and gas recovery methods are only suitable for the recovery and purification of volatile components of pure hydrocarbons, and are not suitable for the escape of high-concentration hydrogen sulfide and hydrocarbon waste gases from oil storage tanks and waste oil tanks in oil refineries, such as condensation methods When dealing with waste gas containing hydrogen sulfide, there is a corrosion problem. In the activated carbon adsorption method, the activated carbon itself is also easy to absorb hydrogen sulfide. The general vacuum technology cannot regenerate the activated carbon well.

Method used

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  • Treatment method of storage tank-dissipating stinking sulfur-containing waste gas
  • Treatment method of storage tank-dissipating stinking sulfur-containing waste gas
  • Treatment method of storage tank-dissipating stinking sulfur-containing waste gas

Examples

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Embodiment 1

[0040] The breathing gas of an enterprise's waste oil tank contains hydrogen sulfide 1000mg / m 3 , containing hydrocarbons 20v% (volume fraction), the flow rate is 100Nm 3 / h or so. A three-stage pulse bubbling absorption tower is adopted, including three bubbling absorption zones and three spraying absorption zones, and the internal components of the absorption tower are determined according to the preferred data in the specific embodiment. The thickness of the liquid layer in the bubbling absorption zone is 350mm, and the height of the spray section is 250mm. The absorbent is 5% NaOH solution, the liquid-gas ratio is 100L / m 3 , operating temperature is 25°C. After the absorbed waste gas undergoes condensation dehydration and condensation recovery of hydrocarbons, the cooling temperature of the dehydration condenser is 2°C, and the condensation temperature of the hydrocarbon recovery condenser is -75°C, and a small amount of non-condensable gas is directly evacuated.

[00...

Embodiment 2

[0043] The breathing gas of a sulfur-containing sewage tank in an enterprise contains hydrogen sulfide 1000mg / m 3 , methyl mercaptan 200mg / m 3 , dimethyl disulfide 50mg / m 3 , hydrocarbon 10v%, flow rate is 150Nm 3 / h or so. A three-stage pulse bubbling absorption tower is adopted, including three bubbling absorption zones and three spraying absorption zones, and the internal components of the absorption tower are determined according to the preferred data in the specific embodiment. The thickness of the liquid layer in the bubbling absorption zone is 350mm, and the height of the spray section is 250mm. The absorbent is a solution containing 5% NaOH, 10% NaClO, and 5% cobalt sulfonated phthalocyanine, and the liquid-gas ratio is 50L / m 3 , operating temperature is 25°C. After the absorbed exhaust gas undergoes condensation dehydration and condensation recovery of hydrocarbons, the cooling temperature of the dehydration condenser is 2°C, the condensation temperature of the r...

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Abstract

The invention discloses a treatment method of storage tank-dissipating stinking sulfur-containing waste gas, which comprises the steps that: under the action of a pipeline pressure controller at a waste gas inlet, a fan is started up, with the help of the power provided by the fan, hydrogen sulfide and organic sulfide in the waste gas are purified by using an efficient bubble column, moisture in the waste gas is then removed by preliminary condensation and hydrocarbon components in the waste gas are further condensed and recovered, and in the end, the purifying gas is exhausted; the efficient bubble column is a countercurrent pulse bubble absorption column, and gas phase is dispersed via a nozzle of the absorption column and then subject to contact oxidation together with absorbent in a bubble absorption area in order to absorb sulfur-containing compounds therein, and the nozzle of the bubble absorption column is structured as bubble pulse valve. The method according to the invention has simple flow and high treatment efficiency, can be used for the purification of sulfide and hydrocarbon mixed gas thereof in the process of various productions, and is particularly suitable for the purification of waste gas dissipated from the tanks in oil refining company, such as processing device, waste oil tank, sulfur-containing sewage tank, crude diesel tank, crude gasoline tank, etc.

Description

technical field [0001] The invention relates to a method for treating malodorous sulfur-containing waste gas dissipated from chemical storage tanks, in particular to a method for treating malodorous waste gas containing organic sulfides such as hydrogen sulfide and methyl mercaptan and harmful components such as hydrocarbons. Background technique [0002] Refinery contains various storage tanks, such as sulfur-containing sewage tanks, oil intermediate tanks, etc., which are important sources of odor gas emission. The odor gas emitted contains high concentrations of volatile hydrocarbons, hydrogen sulfide, organic sulfide, ammonia, etc. Pollutants, long-term activities of employees in an environment polluted by these substances may cause diseases such as the respiratory system, digestive system, and reproductive system, and may also cause body lesions and cancer; when the pollution is severe, it will also cause dizziness and sore throat , nausea, vomiting and other symptoms o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/18B01D5/00B01D53/48B01D53/72B65D90/30
Inventor 郭兵兵刘忠生彭德强王海波
Owner CHINA PETROLEUM & CHEM CORP
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