SU1550262A2 - Method of conveying oil and viscous oil products through pipeline - Google Patents

Abstract

The invention relates to the transportation of oil, improves the efficiency of transporting viscous oils through a pipeline and reduces the consumption of surfactant. As the last use of the active mixture containing, wt.%: Alkaline waste cleaning light oil 80-95

Rosin 0.01-0.1 and water the rest. The active mixture is introduced into the oil stream in a ratio of (0.1 - 1.0): 1.0, respectively. Oil after entering into it the mixture is kept in the sump for 2 to 6 hours. Then the active mixture is removed. Water is introduced into the oil in a ratio of 1.0: (0.1 - 1.0). 1 hp f-ly.

Description

The invention relates to the transportation of oil and petroleum products, is intended to increase the efficiency of pipeline transport of viscous oils and petroleum products, and is an improvement of the method according to ed. St. No. 777339.

The purpose of the invention is to increase the transportation efficiency by preventing the formation of compaction products and reducing the overhead costs of the surfactant.

This goal is achieved by using an active blend containing May as a surfactant. %:

Alkaline waste80-95

Rosin0.01-0.1

WaterEverything,

wherein the active mixture is introduced into the oil stream in a ratio of (0.1 -1.0): 1.0, respectively. After the active mixture is introduced into it, the oil is kept in a settling tank for 2-6 hours, after which the active mixture is removed, and water is introduced into the oil in a ratio of 1.0: (1.0-1.0) and transported via a pipeline.

The use of the active mixture containing alkaline wastes (TU 38 AzSSR 20139-80), rosin and water in the proposed method as a result of its neutrality with respect to calcium and magnesium ions prevents the formation of compaction products and, accordingly, eliminates complications Associated with this process At the same time, there is a sharp decrease in the degree of neutralization of the active mixture and, accordingly, its non-productive costs. The active mixture used in the proposed method is characterized by unlimited miscibility with oil, and the viscosity of the source oil being transported, depending on the content of the active mixture in it, decreases tenfold or more, eventually approaching the viscosity of water. Moreover, after treating the oil with the active mixture and taking the latter, the oil also becomes active with respect to water, i.e. it mixes with water indefinitely, which also allows water to be used for transportation, which further reduces the consumption of the active mixture due to

(/

ate

about

Yu O GO

NJ

its selection and reuse directly at the oil treatment facility for transportation.

The method was tested under laboratory conditions. Alkaline wastes are based on alkaline wastes from oil refining obtained from refining light oil products. The rosin used is a product of wood resin processing — a fragile vitreous mass consisting mainly of resin acids. Water is used as fresh (tap) and reservoir (bicarbonate-sodium). The process of preparation of the active mixture is carried out by mechanical dissolution of rosin in alkaline waste, followed by addition of water to the mixture.

In order to determine the boundary values of the active mixture ingredients, in the first case, three mixtures are prepared, which each contain alkaline wastes 80% by weight, differ from each other in the content of rosin, respectively, 0.01; 0.05; and 0.1 May. %, the rest is water up to 100 May. %

In the second case, three mixtures are prepared, each of which contains alkaline waste of 87.5 May. % differ one from another in the content of rosin, respectively, 0.01; 0.05 and 0.1 May. %, the rest is water up to 100 May. %

In the third case, three mixtures are prepared, which each contain alkaline wastes 95 May. % differ one from another in the content of rosin, respectively, 0.01; 0.05 and 0.1 May. %, the rest is water up to 100 May. %

In addition, two mixtures are prepared, the first of which contains alkaline waste 79% by weight; rosin 0.009 wt.%; water up to 100 wt.%, and the second mixture contains alkaline waste 96 wt.%; rosin 0.11 wt.%; the rest is water to 100 wt.%. According to the data obtained, both prepared mixtures are true (molecular) solutions. The presence of compaction products in them is not observed. When mixing the active mixtures with both fresh (tap) water and reservoir (hydrocarbon sodium) formation of compaction products is also not observed.

To determine the effect of active mixtures on the process of transporting oil, the following experiments were carried out: in the first case, the active mixture is introduced into the oil transported in a ratio of 1.0: (0.1 -1.0), and the viscosity of the system being transported is determined secondly, after entering the active mixture, the oil is kept in the settling tank for 2-6 hours, after which the active mixture is removed, and water (fresh or formation) is introduced into the oil in a ratio of 1.0: (0.1 - 1.0) and the system viscosity is also determined. The increase in the content in the active mixture of water over 19.9 wt.% Reduces the time of its separation from petroleum in static conditions, however, at the lower optimal value of rosin decreases and

0 activity of the mixture in relation to oil, which is impractical. A decrease in the content in the active mixture of water less than 4.9 wt.% Increases the time of separation of the mixture from oil, which in turn increases the flow rate.

5 active mixture, which is also impractical. An increase in the content of rosin in the active mixture of more than 0.1 wt.% Is not of significant importance and it is not expedient from an economic point of view. A decrease in the content of rosin in the active mixture of less than 0.01 wt.% Reduces the activity of the mixture. An increase in the amount of input of the active mixture into the oil in excess of 1.0 wt.% Does not have a significant value and from an economic point of view it is not advisable. The increase in the amount of water input into oil (after its treatment and the selection of the active mixture) of more than 1.0 wt.% Is impractical due to a decrease in oil activity. Reducing the amount of water input into the oil (after treating it and taking the active mixture) less than 0.1 wt.% Reduces the efficiency of the process as a result of the increased viscosity of the transported mixture.

Claims (2)

Invention Formula 5 1. The method of transportation by pipeline of viscous oils and petroleum products by bus. St. No. 777339, characterized in that, in order to increase the transport efficiency and reduce the consumption of the surfactant-Q active substance, the latter uses an active mixture containing, in wt.%: Alkaline waste cleaning light oil 80-95 5 Rosin 0.01-0.1 WaterEverything, wherein the active mixture is introduced into the oil stream in a ratio of 0.1 -1.0: 1.0, respectively. 2. A method according to claim 1, characterized in that the oil after entering the active mixture into it is kept in a sump for 2-6 hours, after which the active mixture is removed and water is introduced into the oil in a ratio of 1.0: 0, respectively 1 -1.0. 0