SU63243A1 - The method of alkaline cleaning of petroleum products - Google Patents

Description

D.: I for cleaning petroleum products consumes significant amounts of alkalis, which come to deliver to areas of oil: npoiibiuieniuosti. Instead of these np-and, mainly, alkaline hydroxides, it is proposed to use brines obtained by concentrating the alkaline formation waters of oil fields.

By It is known that already the method of complex nonrecycling of these waters (ai; tor certificate L1 58839) alkaline brines is prepared by combining drilling waters in natural basins. In the Bakpn region, such a basin: M is Lake Boyuk-Shore. Concentrated; Salt in the water goes quickly only in the summer season, especially in summer, and can be significantly accelerated by spraying water 1 | with the spins of the “Lako. Still to get brines. the field requires at least a year. In addition, the work of n.i lake baoseinization and the nesting level are necessary for the concentration of salts in natural basins.

To speed up the preparation of alkaline brines, it is recommended to use the existing refinery boiler plants, which

allows you to get substitutes for caltzpinsrsiio-Pp caustic sedi for cleaning oil products without a cap,; overlaid}.

The proposed method is carried out with / hedioipol;, in approximately the same manner.

Malshshneralzhozgnye alkaline silt waters of the oil fields of Petrozavodsk, the first alkali carbonate, and Palmer's characteristics from 30 d; n above, that about words, -1; n5 almost on; July, the absence of calcium mudflows ;; Magnesiums are used as feedwater for steam boilers.

In Baku pafioHC. ) Ianpi; ; cp. for this purpose are used

Alkaline Alkaline Codes

1KINcKoi nknrMn :: ki; 1skog suite,

Steam boilers, working pa-mye: ksi water or other hard zodah, translated iui niti) ;. niclochpy: p1 drilling water. Along with noluchitsgsm steam for industrial purposes;: iron; 1sparsi ", in steam boilers every day H1, fir-tree trunks a lot of money: a 1,150-1,160 with the cost; Putting sodium (before and hlornsthch) sodium to- 10-12 -ii. soda in brines of the decree; 1H; the specific gravity contains about 1.5o of boiling water (up to 300 mg) and 600 mg of blom

The alkaline brines obtained are used for the purification of petroleum products: kerosene distillate, gasoline, chygroin and oils. Inspection of the purification of kerosene distillate in the factory gave good results.

In addition to alkaline brines at no cost, there is a hierarchy of steam boilers (Baku heating plants) from marine hard: water to alkaline drilling water has several advantages. In addition, this additionally saves a lot by increasing the total amount of steam, the absence of pakini, reducing the consumption of oil and reducing the corrosion of boiler iron.

So, iri salt

composition of the water of the Caspian Sea in. W. per 1 kg of water.):

NaCl

-7.4763

KC1 -0.5550

Ca (nCO., V

W., weight at -0.2800

CaSO4 -0.9756 1.010. -2.9090

MgSO

.IgCl, -0.5957

in steam boilers during the evaporation of marine WATER: there is a huge accumulation of scale, which consists mainly of calcium sulfate from carbon salts and carbonate particles (dirt). Therefore, in oil refineries when working to-tl on; Maritime / water is set to a certain mode in which the boiler is blown through after 4 hours, i.e. 6) per day. “The boiler run before stopping it for cleaning pakip is installed no more than one month. In this mode, the boiler salt concentration reaches 12 ° B. That gives an increase in the salt content of 8 times. The deposition of scale in boilers when working on sea water leads to the need to stop to clean it from scale and to increase fuel consumption. In addition, the increase in water m ineralizacin leads to an increase in the content of porous magnesium, which causes increased corrosion of boiler iron.

Alkaline bzfova water is different from seawater.

When the salt composition of the compound is: Od to, and, ak and and with to and IpaiMiMax per 1 kg of water):

NaCl - 7.30I

N; iHCO .. -6,10I

beats. weight

 -0.97 1.005. CaCO .. -0.012

MgCda -0,006I

Its copied components are chloride and bicarbonate atrium.

With such a salt composition, only about 20 kg of Z-acidic calcium and magnesium salts can be extracted from 1000 n alkaline water, i.e., almost no scale is formed, since insoluble salts that fall out in a small amount will be removed when the boiler is purged. (If you take the same amount of sea water, then; And 3 nbe more than 1000 kg of calcium sulphate is allocated.) Therefore, the operating mode of a new boiler with schtechnoe differs favorably from the operation of the boiler in seawater: first, the boiler operates without blowing on shchelo.chnoy water 5-6 days; when the salt concentration of specific iBeca 1,150-1,160 is reached, the boiler is blown from I up to 2 c per day, which gives on average up to 3-3.5 m of rasgol with hycella content (NagCOa and) Translated to soda up to 6-7%.

Experienced cleaning of the tractor kerosene with such a brine, carried out on a factory scale, showed complete obyazhennost. Uses of kerosene with normal acidity and ash.

In addition to the purification of kerosene, good results have been achieved in obtaining a slush from alkaline waste due to the presence of sodium chloride in brines.

The economic effect of the proposed method consists of the following:

1. Alloys for the purification of petroleum products can be obtained directly at refineries.

2. Replacements of Kaltsin1Iro13: ai0y and caustic soda - brines from other borehole drilling waters - received from