Condensate oil deodorization method

A technology for condensate and deodorization, applied in the petroleum industry, refining hydrocarbon oil, refining with halogen compounds, etc., can solve the problems affecting the processing of condensate, loss of extraction solvent, difficulty in lye separation, etc., and reduce desulfurization sewage. , long-lasting deodorization effect, simple and safe operation

Active Publication Date: 2016-05-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alkali refining treatment is used to extract hydrogen sulfide and part of mercaptan into the lye, which can partially deodorize and desulfurize, but there are two problems: the treatment of sulfur-containing lye is difficult, especially in oil fields or storage terminals. Difficult to deal with, and prominent environmental protection issues; one-time use of lye, high cost; colloids and asphaltenes in condensate oil have certain surface activity, and desulfurization by alkali refining, if the conditions are not appropriate, emulsification problems will occur, causing Difficult separation of lye will increase the residual sodium ions in the oil after refining. Sodium ions will remain in the residual oil during processing, poisoning the catalyst and seriously affecting the secondary processing of the residual oil. At the same time, the lye contains not only sulfur but also oil. Disposal of spent caustic will be more difficult
This method can transfer the sulfide in the condensate to the solvent to achieve desulfurization, but it needs heating and gas stripping to realize the regeneration of the solvent, which is difficult to realize in oil fields or docks, and requires the cost of heat sources. The hydrogen sulfide still needs to be dealt with
Another problem with the extraction method is the residual solvent in the condensate oil, which not only causes the loss of expensive extraction solvent, but also the nitrogenous compounds remaining in the condensate oil will seriously affect the processing of the condensate oil

Method used

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  • Condensate oil deodorization method
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  • Condensate oil deodorization method

Examples

Experimental program
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Effect test

Embodiment 1

[0047] The reactor was filled with activated carbon-supported sulfonated cobalt phthalocyanine catalyst (sulfonated cobalt phthalocyanine accounted for 0.5% of the total mass of the catalyst), the filling volume was 20 mL, and the filling height-diameter ratio was 6:1; the activator was ammonia, methanol, and methylal. Aqueous solution, in which the mass ratio between ammonia, methanol, methylal, and water = 10:15:5:70, air is the oxidant; condensate A, activator, and air are mixed in a mixer, and the gas-liquid adopts a filter element Mixing method, liquid-liquid adopts pipeline mixing method, the flow rate of condensate oil is 200mL / h, the flow rate of activator is 8μL / h, and the air injection rate is 200mL / h; the condensate oil A, activator and air are mixed and then enter the reactor to contact with the catalyst , the bottom-in and top-out feeding mode, the pressure of the reactor is 0.105MPa, the top of the reactor is equipped with a vent valve to release excess gas, and t...

Embodiment 2

[0051] The reactor was filled with activated carbon-supported sulfonated cobalt phthalocyanine catalyst (sulfonated cobalt phthalocyanine accounted for 0.5% of the total catalyst mass), the filling volume was 20 mL, and the filling height-diameter ratio was 6:1; the activator was hexadecyl-trimethyl An aqueous solution of ammonium hydroxide, ethanol and diethylene glycol monomethyl ether, wherein the mass ratio between cetyl-trimethylammonium hydroxide, ethanol, diethylene glycol monomethyl ether and water=12:13: 5:70, air is the oxidant; the condensate A, the activator and the air are mixed in the mixer, the gas-liquid adopts the filter element mixing method, the liquid-liquid adopts the pipeline mixing method, the condensate oil flow rate is 200mL / h, and the activator flow rate 12μL / h, the air injection volume is 200mL / h; the condensate A, activator and air are mixed and then enter the reactor to contact the catalyst. The pressure valve was pressed to release excess gas, and...

Embodiment 3

[0055] The reactor was filled with activated carbon-supported sulfonated cobalt phthalocyanine catalyst (sulfonated cobalt phthalocyanine accounted for 0.3% of the total mass of the catalyst), with a filling volume of 20 mL and a filling height-diameter ratio of 6:1; the activator was N,N-dimethyl- An aqueous solution of cetylammonium, isopropanol, and methylal, wherein the mass ratio between N,N-dimethyl-hexadecylammonium, isopropanol, methylal, and water=7:15: 6:72, the oxidant is 30% hydrogen peroxide; the condensate A, the activator and the oxidant are mixed in a mixer, the flow rate of the condensate oil is 200mL / h, the flow rate of the activator is 16μL / h, and the flow rate of the oxidant is 1.2mL / h, The condensate A, the activator and the oxidant are mixed and then enter the reactor to contact with the catalyst. The feed mode is top-in and bottom-out, and the temperature of the reactor is 12°C. The above-mentioned process conditions were used to treat the condensate oil...

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Abstract

The invention provides a gas condensate deodorization method. The method comprises the following steps of mixing or contacting gas condensate, an activator, an oxidizing agent and a deodorization catalyst, and collecting the mixed or contacted gas condensate, wherein the activator comprises a mixture of a water-soluble ether compound, inorganic base and / or organic base, and a water-soluble polar solvent, the water-soluble ether compound has a structure of R1(OR2)nOR3, R1, R2 and R3 respectively represent C1-C8 alkyl and n is an integer of 1-5. The gas condensate deodorization method transforms low-boiling point sulfide in the gas condensate into high-boiling point sulfide thereby realizing deodorization, can be operated simply and safely, does not discharge waste, is suitable for oil field, harbor, oil depot and oil refinery and is conducive to follow-up processing of gas condensate. The gas condensate deodorization method has lasting deodorization effects, can substantially improve smell, directly improves gas condensate corrosivity to a distillation column, reduces sulfur content of a follow-up product and desulphurization load in processing and reduces desulphurization sewage.

Description

technical field [0001] The invention relates to a method for deodorizing condensate oil. Background technique [0002] As we all know, condensate comes from the liquid phase components associated with the exploitation of associated natural gas in oilfields, and its main component is C 2 ~C 20 A mixture of hydrocarbons, but containing a certain amount of colloid and asphaltenes, belongs to the category of crude oil, and is a high-quality raw material for the production of solvent oil, naphtha, and aviation kerosene, but it often contains highly volatile hydrogen sulfide, mercaptan, etc. Malodorous and toxic sulfides, sometimes containing more than 1000mg / kg, resulting in a concentration of such sulfides in the gas phase as high as 2200mg / m2 at room temperature 3 . Due to the high corrosiveness and strong toxicity of sulfides, high-sulfur condensate will cause severe corrosiveness to metal and rubber materials, personal safety due to volatilization during storage and transp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G27/00C10G27/02C10G27/04C10G27/12
Inventor 吴明清李涛潘光成常春艳陶志平王征赵丽萍王小伟
Owner CHINA PETROLEUM & CHEM CORP
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