Composition and method for elimination of hydrogen sulfide and mercaptans
A compound, hydrogen sulfide technology, applied in drilling composition, chemical instruments and methods, separation methods, etc., can solve problems such as unstable products, unusable, difficult to remove deposits, etc.
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Embodiment 1
[0096] Example 1 : In this example, as in all other examples referring to this example, when preparing the scavenger composition, the reagents are continuously added to the solution: first the reagents are dried, and then after they dissolve, then It is a liquid reagent. Mixing was carried out until a homogeneous product was obtained and all preparations were carried out at room temperature.
[0097] In the flask, 65.95 g of distilled water were added, followed by 24.3 g of sodium nitrite. After dissolving the sodium nitrite, 5.3 g of sodium hydroxide was added. After dissolving the sodium hydroxide, 4.45 g of diethanolamine (DEA) was added and mixed to obtain a homogeneous product. A scavenger composition was obtained having: sodium nitrite (24.3wt.%), sodium hydroxide (5.3wt.%), diethanolamine (4.45wt.%), and the remainder (65.95wt.%) %) is water. This scavenger composition was used to neutralize 254 ppm hydrogen sulfide in petroleum.
[0098] 96 g of crude oil were p...
Embodiment 2
[0100] Example 2 : The preparation of the solution of the scavenger composition was carried out in a similar manner as described in Example 1 above. The stoichiometric amount of the components in the scavenger composition was the same as in Example 1, except that the water content was 68.03 wt.%, and instead of diethanolamine, monoethanolamine (MEA) triazine was used, and it was used in the scavenger composition The content in the solution was 3.1 wt.%. It should be noted that since the molecule monoethanolamine (MEA) triazine С 9 h 21 N 3 o 3 Contains three nitrogen atoms, so the ratio of 25 moles of hydrogen sulfide to 1 mole of nitrogen is the same as in Example 1.
[0101] In the flask, 65.63 g of distilled water were added, followed by 24.3 g of sodium nitrite. After dissolving the sodium nitrite, 5.3 g of sodium hydroxide was added. After dissolving the sodium hydroxide, 4.77 g of a 65% aqueous solution of monoethanolamine (MEA) triazine was added and mixed to ob...
Embodiment 3
[0104] Example 3 : The preparation of the solution of the scavenger composition was carried out in a similar manner as described in Example 1 above. In the flask, 63.5 g of distilled water was added, followed by 36.5 g of sodium nitrite, and mixed to complete the dissolution. A scavenger composition with only sodium nitrite (36.5 wt.%) and water (63.5 wt.%) was obtained. The solution obtained was used to neutralize 254 ppm of hydrogen sulfide in petroleum.
[0105] The testing of the scavenger composition was carried out in a similar manner to Example 1: 96 g of crude oil were placed in a jacketed thermostatically controlled flask equipped with a magnetic stirrer. Then, the calculated amount of the scavenger composition was placed in the flask, starting with 750 g / T, ie 0.072 g. The flask was purged with argon to remove air. The reaction mixture was mixed at the indicated temperature for the indicated time. The measurement of hydrogen sulfide content in this example was ...
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