Separating agent for extracting asphalt from oil-sand

Abstract

The invention discloses a separating agent for extracting asphaltum from oil sand, the separating agent comprises components with the weight percentage as follows: sodium (or potassium) hydroxide (0.1-0.5 percent); sodium (or potassium) phosphate (0.5-2 percent), sodium (or potassium) silicic acid (1-5.5 percent), sodium (or potassium) carbonate (0.5-1 percent), sodium chloride (0.1-0.5 percent), oil solvent (3-7 percent), surfactant (0.1-0.5 percent), and water (85-94 percent). The technology with the separating agent to extract asphaltum is simple and easy to control. The recovery ratio of the asphaltum reaches to more than 94 percent, with significant separating effect. Meanwhile, the dose of sodium hydroxide needed by the separating agent is small, the agent can be used repeatedly with little loss, low price and cost, thereby greatly decreasing the separation cost, improving the economic benefits, and being favorable for environmental protection.

Description

1. Technical field [0001] The invention belongs to the product separation technology in the field of chemical industry, and in particular relates to a separation agent for obtaining crude oil from oil sands. 2. Background technology [0002] Oil sand is a sandy mineral deposit containing crude oil. Its main components are asphalt, water, clay and sand. It looks like black molasses. Its resources are huge, accounting for about 30% of the world's oil reserves. As international oil prices continue to rise, the profit margins generated by the exploitation of oil sands have greatly increased, making oil sands an important backup resource that is increasingly valued by the world. In foreign countries, the mining and refining of oil sands has a history of more than 40 years. As an important oil source in the future, the output of oil sand mines is also increasing year by year. In Canada, the proven oil sand and heavy oil resources amount to 400 billion cubic meters (2.5 trillion ...

AI Technical Summary

Problems solved by technology

Among them, the pulping agent is a mixture of sodium chloride, sodium hydroxide and OSD agent. Using this slurrying agent for separation is not only complicated and difficult to separate, but also the recovery rate of asphalt is low, only 85-90%. , the oil content of the remaining mud and sand is relatively high, and the separation effect is not ideal. At the same time, due to the large amount of sodium hydroxide, the consumption of reagents increases, which is not conducive to environmental protection.