SU998645A1 - Method of producing material for collecting petroleum products off water surface - Google Patents

Description

The invention relates to chemical technology and can be used in the treatment of wastewater containing films of petroleum products and oils on its surface, as well as in the purification of polluted waters.

A method is known for producing such a material by coating silica particles of 0.1-1 µm in size with silane and then incorporating these particles into a matrix of polymer fibers 11.

The disadvantage of this method is the technological complexity of the preparation of materials, the scarcity of the raw material, the limited use of the materials obtained. - The closest to the invention. According to its technical nature and the achieved result, there is a method of obtaining a material for removing oil products from the surface of water, including the impregnation of sawdust with a melt of paraffin. The resulting sawdust becomes hydrophobic, but is moistened with substances like hydrocarbons. Paraffin-impregnated sawdust does not swell or sink, and the film of hydrocarbons and other wetting

their substances are crushed to sawdust and, together with them, are easily removed from the surface of the water, for example, by a rotating blade or scraper. The same sawdust, being placed in the cartridge through which waste is passed. water promotes the coagulation of wetted components, which facilitates their settling. C23. A disadvantage of the known method is the incomplete removal of mixtures containing oxidized substances from water.

In addition, paraffin deficiency.

The aim of the invention is to increase the efficiency of the material.

The goal is achieved by the fact that according to the method of semi-material for removing oil products from the surface of the water, including the impregnation of sawdust with a melt of a hydrophobic filler, the floating oil is used as the filler, which is the waste 25 of thermal processing of wood.

Splash oil is produced in wood processing plants as a result of wood frowning in retorts at temperatures in the range of 30 350-BOO C. This oil, after condensation of the coking gas, emerges as a thin layer on the surface of the sludge.

It is formed mainly due to decomposition of the bark. This oil has not been used up to now and the accumulated layer is periodically scooped from the surface of the tanks, where the zhizka is stored, and burned.

The composition of the floating oil,% s Hydrocarbons 70-85

Neutral

Oxygenator 15-25 harvester

Acid1-2

The preparation of material for the removal of petroleum products and oils from the surface of water is carried out as follows.

The seed fraction of 1-5 mm sawdust is dried to an absolute humidity of no more than -15%. The oil is washed with hot water (60-80 ° C) in a 1: 1 ratio, defended from water and heated (50-80 ° C) in hot form and mixed with sawdust in a weight ratio of oil: sawdust from 0.5: 1 to 2 :one. Since the supernatant oil contains oxygen-containing substances, according to the principle of this, it is wetted with a similar one, such material can also be used to collect oxidized hydrocarbons. Diameter Type of film on water

Before depositing material

Other oxygen-containing components of oils or petroleum products.

Example. Take 0.2 kg of Svalsky vskogo LHK splash oil, heat it up to a liquid state (60 °) and pour it into a heated separating funnel with a capacity of 0.75 l. There also pour water in an amount of 0.2 kg, pre-heated before. The funnel, together with the heater, is mounted on a shaking table, shaking simultaneously with heating is continued for 0.5 hours.

Then for 1 h was made by settling with the heating turned on.

5 By the end of settling, the temperature in the liquid was 80 ° C. From the funnel, the water and the washed oil are merged in turn, the amount of which was 0.164 kg. This amount of oil in hot form is poured into the pre-dried to a moisture content of 12% rel. pine sawdust. The weight of sawdust is 0.3 kg. After mixing, all the oil was absorbed into the sawdust. Cooled sawdust in

5, the water does not swell and the oil is not excreted, and their weight after being kept in water for 24 hours does not change.

The obtained sawdust was checked when picking A 96 gasoline, sunflower oil, their mixtures 1: 1, and engine oil oxidized by boiling with potassium permanganate from the water surface.

After making the material

by famous

the proposed method, the method of spot on the surface of water, mm

193

Petrol

205

Sunflower oil

Gasoline mixture

191 and oils

212

Oxidized oil The table presents the results of experiments and the results of testing the material of a known method.65

18

20

22

185

20

53

27

Claims (2)

91 Thus, in comparison with the known, the material prepared by the proposed method has 99,864 when collecting oxidized products with special advantages. Using the proposed method will allow to produce material that contributes to the protection of the environment from raw materials that have not previously been marketed, 5 and to increase the efficiency of the material by increasing the degree of collection of petroleum products and oils, including oxidized substances. Approximately the cost of 1t10 material, compared with the known, is reduced by 4.3 rubles. The invention The method of obtaining material for the removal of petroleum products from the top. water, including the impregnation of sawdust with a melt of a hydrophobic filler, characterized in that, in order to increase the efficiency of the material, a floating oil is used as a hydrophobic filler, which is a waste of thermal processing of wood. Information sources. taken into account in the examination 1. US patent 4199447, cl. 210-23, 198tf. 2. For Japan of Japan 53-23785, cl. On 01 D 15/00, 1978.