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Gas condensate deodorization method

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

Active Publication Date: 2015-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • 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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Examples

Experimental program
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Effect test

Embodiment 1

[0047] The reactor is filled with activated carbon-supported sulfonated cobalt phthalocyanine catalyst (sulfonated cobalt phthalocyanine accounts for 0.5% of the total mass of the catalyst), the filling volume is 20mL, and the filling height-to-diameter ratio is 6:1; the activator is ammonia, methanol, and methylal. Aqueous solution, in which the mass ratio of ammonia, methanol, methylal, and water is 10:15:5:70, and air is the oxidant; the condensate A, activator, and air are mixed in a mixer, and the gas-liquid uses a filter element Mixing method, liquid-liquid adopts pipeline mixing method, condensate oil flow rate is 200mL / h, activator flow rate is 8μL / h, and air injection volume is 200mL / h; condensate oil A, activator, and air are mixed and enter the reactor to contact with the catalyst , Bottom-in and top-out feeding mode, the reactor pressure is 0.105MPa, the top of the reactor is equipped with a vent valve to release excess gas, and the reactor temperature is 12°C. The...

Embodiment 2

[0051] The reactor is filled with activated carbon-supported sulfonated cobalt phthalocyanine catalyst (sulfonated cobalt phthalocyanine accounts for 0.5% of the total mass of the catalyst), the filling volume is 20mL, and the filling aspect ratio is 6:1; the activator is hexadecyl-trimethyl Aqueous solution of ammonium hydroxide, ethanol, diethylene glycol monomethyl ether, wherein the mass ratio between hexadecyl-trimethylammonium hydroxide, ethanol, diethylene glycol monomethyl ether, water=12:13: 5:70, air is the oxidant; mix condensate A, activator, and air in a mixer, gas-liquid is mixed by filter element, liquid-liquid is mixed by pipeline, the flow rate of condensate oil is 200mL / h, and the flow rate of activator 12μL / h, the air injection volume is 200mL / h; the condensate oil A, activator, and air are mixed and enter the reactor to contact with the catalyst. Press the valve to release excess gas, and the reactor temperature is 20 °C. The condensate oil equivalent to 5...

Embodiment 3

[0055] The reactor is filled with activated carbon-supported sulfonated cobalt phthalocyanine catalyst (sulfonated cobalt phthalocyanine accounts for 0.3% of the total mass of the catalyst), the filling volume is 20mL, and the filling aspect ratio is 6:1; the activator is N,N-dimethyl- Aqueous solution of cetyl ammonium, isopropanol, and methylal, wherein the mass ratio between N,N-dimethyl-cetyl ammonium, isopropanol, methylal, and water is 7:15: 6:72, the oxidant is 30% hydrogen peroxide; mix condensate A, activator, and oxidant in a mixer, the flow rate of condensate oil is 200mL / h, the flow rate of activator is 16μL / h, and the flow rate of oxidant is 1.2mL / h. Condensate oil A, activator, and oxidant are mixed and enter the reactor to contact with the catalyst. The feeding method is top-in and bottom-out, and the temperature of the reactor is 12°C. The condensate oil equivalent to 5,000 times the volume of the catalyst was treated using the above process conditions, and the...

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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 oil 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 contains a certain amount of colloid and asphaltene, which 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. Smelly and toxic sulfides, sometimes with a content of more than 1000mg / kg, resulting in a concentration of such sulfides in the gas phase at room temperature as high as 2200mg / m 3 . Due to the high corrosiveness and strong toxicity of sulfide, high-sulfur condensate oil will cause serious corrosion to metal and rubber materials, personal safety due to volatilization during storage a...

Claims

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Application Information

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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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