Water purifying agent comprising polymerized Fe-Al salt and silicic-boric acid

Abstract

The water-purifying agent is comprised of (by weight) 1-3 portions of ferro-aluminium salt, 2-4 portions of active silicic acid and 0.1-0.2 portion of boric acid. The above-mentioned materials are mixed, and can be injected into the sewage produced by oil production. By adopting said invented water-purifying agent, the alumen ustum formed after polymerization is large, and its cleaning speed is quick, cost is low, and its required dose is small, it has no secondary pollution, and is applicable to oil production.

Description

technical field [0001] The invention relates to a water purifying agent for petroleum exploitation. Background technique [0002] At present, in order to increase the oil yield in oil extraction, it is necessary to inject a large amount of high molecular polymers, surfactants, wax-loving colloidophilus, etc. Molecules, as well as stratum clay particles, etc., need to be purified in the later stage of mining. The common water purifiers currently used, such as polyaluminum chloride, polyferric sulfate, non-ionic polyacrylamide, alum, etc., all have the amount of purifying agent Large, small alum flowers, slow washing speed, high cost and other defects, while the lime polyacrylamide decontamination method has a large amount of sludge generated in the decontamination due to excessive use of lime, resulting in secondary pollution. Contents of the invention [0003] The object of the present invention is to provide a water purifying agent with high charge density, large molecul...

AI Technical Summary

Problems solved by technology

[0002] At present, in order to increase the oil yield in oil extraction, it is necessary to inject a large amount of high molecular polymers, surfactants, wax-loving colloidophilus, etc. Molecules, as well as stratum clay particles, etc., need to be purified in the later stage of mining. The common water purifiers currently used, such as polyaluminum chloride, polyferric sulfate, non-ionic polyacrylamide, alum, etc., all have the amount of purifying agent large, the formation of alum flowers is small, the washing speed is slow, and the cost is high. However, the lime polyacrylamide decontamination method has a large amount of sludge in the decontamination due to excessive use of lime, resulting in secondary pollution.