RU2392071C1 - Method of oil processing waste utilisation for production of construction materials - Google Patents

Abstract

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil products waste treatment and may find application in fabrication of construction materials. The method of oil processing hydrocarbon wastes treatment for production of construction materials includes mixture of the above wastes, sand and macadam, water and an astringent substance by way of successive addition of the said wastes in an amount of 0.5-0.6% of the total components weight as well as the to astringent substance and water to sand and macadam, pre-heated to 150-180°C.

EFFECT: oil processing wastes utilisation, improved strength, adhesion and moisture insulation properties.

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Description

The invention relates to the processing of waste petroleum products and may find application in the manufacture of building materials.

A known method in which produce building materials containing sludge obtained from waste oil refining (patent No. 2272860, publ. 03/27/2006).

In the known method for the production of paving slabs significant funds are spent on the preparation of the building mixture.

The closest technical solution is the method in which waste, sand, gravel, water, binder are mixed (patent No. 2191754, publ. 10.27.2002, IPC A01F 7/06).

However, the known method is very laborious, use the oil phase at sub-zero temperatures, introduce various chemicals, followed by heating and isothermal exposure at atmospheric pressure and the introduction of the hydrolysis product.

The whole process increases the cost of implementing the method, reduces its effectiveness.

The purpose of the invention is to increase the efficiency of the method and improve the physico-chemical properties of the building material, and reduce costs.

The technical solution consists in mixing oil refinery waste, sand and gravel, water, a binder, while this mixing is carried out by sequentially adding to the sand and gravel heated to 150-180 ° C 0.5-0.6% of the total mass components, binder and water.

The method is as follows.

Fine-grained filler (MKZN) - washed quartz sand from a quarry with various grain sizes (from 0.05 to 2.5 - sieve size) with a predominance of fine structure over 40% and unfractionated crushed stone (NFSC), which can be introduced before or after sand and to the remaining components, heated to 150-180 ° C. At this temperature, the best adhesion occurs over the entire surface of MKZN with chemical additives. At this temperature, oil wastes, binder and water are added sequentially. In the temperature range of 150-180 ° C, the miscibility of chemical additives and their adhesion over the entire surface of grains MKZN and NFSC (non-fractional crushed stone) sharply increase. At temperatures below 150 ° C, the process of mechanical mixing is significantly complicated and the quality of the manufactured building material, its physical and mechanical properties are reduced. Above 180 ° C, the process of binder hydration is disturbed in the presence of HF, the quality of the building material is reduced.

With these parameters of the composition of the mixture, the process proceeds with a large number of revolutions of the mortar mixer to obtain uniformity and strength of the composition.

As petroleum refining waste, hydrocarbon petroleum refining waste can be used, and cement as a binder.

When compacting the solution, the contact area between coarse and fine fractions increases, which leads to a decrease in porosity by 10-15% due to the displacement of physically bound water and an increase in water resistance by 20-25%. The presence of a chemical additive from oil refinery waste can increase the compressive strength of the composition. The resulting products for construction using chemical additives in an amount of 0.5-0.6% of the total weight of the solution, taking into account the chemical composition of the additives, acquires not only strength, but also environmental safety. An increase in the dose of chemical additives of more than 0.6% reduces the mobility of the solution and the quality of the material obtained.

Example 1. From the quarry sand was taken weighing 500 g of a fine-grained structure, passed through sieves ranging in size from 2.5 to 0.16 mm. To the sifted material was added NFSC. The mixture was heated to 150 ° C, after which hydrocarbon oil refining was added — oil sludge — 0.5% of the total mass. Oil sludge has the following chemical composition.

Table 1 Group chemical composition, wt.% I test II test III test IV test - asphaltenes 8.1 8.1 9.0 9.2 - resin I 9.9 10.1 12,4 12,2 - resin II 16.8 16.7 17.9 18.0 - hydrocarbons: paraffin-naphthenic aromatic: 10.0 12.0 11.8 11.7 lungs 9,4 9.9 9.0 9,4 medium 8.8 8.7 8.8 8.6 heavy 37.0 34.5 31.1 30.9

A binder was added sequentially - Portland cement PC 500 DO (GOST 1108-2003, 30515-97) and water with continuous stirring in a mortar mixer. The temperature of cooling and shrinkage of the solution is 18-20 ° C with an ambient humidity of 65-75%. After cooling, heat and moisture treatment is carried out.

Example 2. The method was carried out as in the first example, with a difference in the heating of sand and gravel to 180 ° C and the addition of petroleum waste 0.6%.

These results are summarized in table 2 (based on 1 m ³ repair building material).

Thus, the use of hydrocarbon emissions in the production of building material allows us to simultaneously utilize waste and obtain material with high compressive strength, improve the adhesion of the repair composition and waterproofing properties, while ensuring economic, social and environmental effects.

table 2 Method Parameters Repair composition Physical and mechanical properties astringent, kg water kg MKZN, kg NFSC kg chemical additive, kg porosity,% water absorption,% compressive strength, % tensile strength,% Composition without chemical additives 580 280 1380 1100 0 one hundred one hundred one hundred one hundred Composition with chemical additives 0.5% 580 280 1380 1100 12.0 87-92 82-84 125-130 96-98 The proposed composition with chemical additives of 0.6% 580 280 1380 1100 13.0 85-90 75-80 135-140 90-95 Composition with chemical additives 0.7% 580 280 1380 1100 15.0 86-88 85-87 123-128 95-97

Claims (1)

A method of utilizing hydrocarbon oil refinery waste for building materials, comprising mixing said waste, sand and gravel, water, a binder, characterized in that said mixing is carried out by sequentially adding to the sand and crushed stone heated to 150-180 ° C. the amount of 0.5 -0.6% of the total weight of the components, binder and water.