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High-temperature-resistant desulfurizer for oil-gas field and preparation method of desulfurizer

A technology for desulfurization agent and oil and gas fields, applied in the petroleum industry, gas fuel, fuel, etc., can solve the problems of low desulfurization efficiency, and achieve the effects of high desulfurization efficiency, high product cost performance, and simple synthesis process conditions

Active Publication Date: 2017-12-01
陕西日新石油化工有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a desulfurizer for high temperature resistant oil and gas fields and a preparation method thereof, so as to overcome the problem of low desulfurization efficiency of the prior art desulfurizers for oil and gas fields in the treatment of hydrogen sulfide in oil and gas fields under high temperature conditions

Method used

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  • High-temperature-resistant desulfurizer for oil-gas field and preparation method of desulfurizer
  • High-temperature-resistant desulfurizer for oil-gas field and preparation method of desulfurizer
  • High-temperature-resistant desulfurizer for oil-gas field and preparation method of desulfurizer

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preparation example Construction

[0039] The invention provides a method for preparing a high-temperature-resistant desulfurizer for oil and gas fields, and its specific operation steps are as follows:

[0040] Step 1, the preparation of triazine compound

[0041] 1.1 Add polyethylene polyamine into the container, start stirring, and add formaldehyde condensate into polyethylene polyamine while stirring. Since formaldehyde condensate is added to polyethylene polyamine, aldolamine condensation reaction will occur, which is an exothermic reaction. In order Control the temperature of the mixture in the container at 60°C to 65°C, and add the formaldehyde condensate in batches; after the formaldehyde condensate is added, stir evenly to obtain mixture A;

[0042] 1.2 Continue to stir the mixture A. If the temperature of the mixture A is lower than 60°C, keep the temperature of the mixture A at 60°C~65°C by heating; under the condition of stirring, keep the mixture A at a temperature of 60°C~65°C for 2.5 ~3.5 hours,...

Embodiment 1

[0062] A method for preparing a high-temperature-resistant desulfurizer for oil and gas fields, the specific steps of which are as follows:

[0063] Step 1, the preparation of triazine compound

[0064] 1.1 Add 180g of diethylenetriamine into the four-necked flask, connect the feed liquid dropper and the electric stirrer; the electric stirrer starts stirring at a speed of 65rpm / min, and add methylal into the diethylenetriamine while stirring , since the aldolamine condensation reaction will occur when methylal is added to diethylenetriamine, it is an exothermic reaction. In order to control the temperature of the mixture in the four-necked flask and keep it at 60°C, add formaldehyde in four batches through the feed liquid dropper. For acetal, add 30g of methylal in each batch; after all 120g of methylal is added, stir evenly to obtain mixture A;

[0065] 1.2 The electric stirrer continues to stir mixture A at a speed of 65rpm / min. If the temperature of mixture A is lower than...

Embodiment 2

[0074] A method for preparing a high-temperature-resistant desulfurizer for oil and gas fields, the specific steps of which are as follows:

[0075] Step 1, the preparation of triazine compound

[0076] 1.1 Add 300g of triethylenetetramine into a four-necked flask, connect the feed liquid dropper and electric stirrer; the electric stirrer starts stirring at a speed of 58rpm / min, and add methylal to triethylenetetramine while stirring , since methylal is added to triethylenetetramine, an aldolamine condensation reaction will occur, which is an exothermic reaction. In order to control the temperature of the mixture in the four-necked flask and keep it at 62°C, add formaldehyde in five batches through the feed liquid dropper. For acetal, add 40g of methylal in each batch; after all 200g of methylal is added, stir evenly to obtain mixture A;

[0077] 1.2 The electric mixer continues to stir the mixture A at a speed of 58rpm / min. If the temperature of the mixture A is lower than 6...

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Abstract

The invention provides a high-temperature-resistant desulfurizer for the oil-gas field and a preparation method of the desulfurizer. 30%-60% of a triazine compound, 5%-20% of organic phosphonic acid, 5%-20% of heterocyclic organic amine, 5%-20% of water-soluble imidazolidine and the balance of water are weighed firstly, wherein the sum of mass percentages of all the components is 100%; the triazine compound is added to water and stirred uniformly, and a mixture B is obtained; heterocyclic organic amine, water-soluble imidazolidine and organic phosphonic acid are added to the mixture B sequentially, the mixture is stirred uniformly, and the high-temperature-resistant desulfurizer for the oil-gas field is obtained. The prepared desulfurizer has high desulfurization efficiency under the high-temperature condition of 90 DEG C; the product has certain scale and corrosion inhibition and sterilization performance; the prepared desulfurizer has the pH value being 7-8, and the scaling trend of carbonate and sulfate in the highly mineralized water environment can be delayed; the whole synthesis process adopts simple conditions and is easy to operate, low in cost, non-toxic, environment-friendly and suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of hydrogen sulfide removal by wet method in oil and gas field exploitation and gathering and transportation process, and in particular relates to a desulfurizer for high temperature resistant oil and gas fields and a preparation method thereof. Background technique [0002] Hydrogen sulfide is a foul smelling, highly toxic and highly corrosive gas. Hydrogen sulfide in oil and gas fields mainly comes from thermal cracking of organic sulfur compounds in crude oil in formation environment, thermochemical reduction of inorganic sulfate and biological decomposition of sulfate reducing bacteria. Hydrogen sulfide dissolved in crude oil will reduce the quality of crude oil, severely corrode pipelines and equipment, and threaten personal safety. In order to prevent the occurrence of safety accidents, the mass concentration of hydrogen sulfide in crude oil is generally limited to below 20mg / L. At present, methods f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L3/10
CPCC10L3/103
Inventor 刘瑜赵全亭李飞阳左胜军范玮
Owner 陕西日新石油化工有限公司
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