RU1617948C - Method for producing furnace fuel oil component - Google Patents

Abstract

FIELD: oil-processing industry. SUBSTANCE: this method prescribes subjecting bottom products to viscosity breaking in presence of highly aromatized additive, that is, selectively refined oil extract or catalytic cracking residues that boil out at boiling terminal point of about 420 C when taken in amount of 2 to 8 percent by mass. Such being the case, structural viscosity of product is scaled down 13.8 to 76.7 times against 12 times in case of using known additive. EFFECT: reduced viscosity of desired product. 1 dwg, 2 tbl

Description

 The invention relates to methods for processing oil residues and can be used in the oil refining industry.

 The purpose of the invention is to reduce the structural viscosity of the visbreaking residue.

PRI me R s 1-10. Visbreaking is carried out on a pilot plant with a capacity of 5 kg / h using the raw materials shown in the drawing. Raw materials from tank 1 are pumped by pump 2 into a metering tank 3, from where dispenser 4 is sent to a raw material heater 5. Raw tank 1 and pipelines at the metering 4 are equipped with a steam jacket, which allows maintaining the raw material temperature at 115-135 ^о С and providing the required fluidity raw materials.

 From a tank 6, a visbreaking gasoline in the amount of 5 wt.% Of the feedstock is supplied as a turbulizer to the feed line by a pump. A flavored additive with an ambient temperature is supplied from a container 8 by a pump 9. The reaction mixture from the raw material heater 5 enters the heating-reaction system 10.

 The heating-reaction system 10 consists of a three-section heater-reactor. Adjustment in each section is carried out independently. The raw material mixture passes through an annular gap formed between the outer wall of the thermocouple pocket and the inner wall of the reactor heater.

 The reaction products are fed through a cooled pipeline to a high-pressure separator 11, where they are separated from gas and low-boiling hydrocarbons - gasoline and sent to low-pressure separators 12 and 13.

 Non-condensing gases from the low pressure separator through the droplet eliminator 14, the alkalization tank 15 and the gas meter 16 are sent for combustion.

The installation work cycle consists of the following stages:
Rise in temperature to 350 ^о С on kerosene.

 Transition to high-quality raw materials and adjustment of the required technological regime.

 Switching to basic raw materials and flushing the system from pro-raw materials.

 Work on the main raw materials with the required mode.

 Temperature reduction.

 Flushing the system with kerosene.

 Cleaning system from coke.

 The duration of the installation cycle is 45-55 hours.

The raw materials used visbreaking tar-residue boiling above 560 ^{° C,} a viscosity at 80 ° ^{C of} 913.5 VU obtained by vacuum distillation of oil.

Visbreaking conditions, the amount of added flavored fraction, material balance of the experiments are given in table 1. Table 2 shows the physicochemical properties of the sludge are added additives flavored and fractions boiling above ^about 180 C., derived from visbreaking liquid products of Examples 1-10.

 The described method, compared with the known using heavier raw materials and flavored additives with a higher boiling point, allows to reduce the structural viscosity of the visbreaking residue by 13.8-76.8 times versus 12 times by the known method.

Claims (1)

METHOD FOR PRODUCING FUEL COMPOUND COMPONENT by visbreaking oil residues in the presence of a highly aromatic additive, characterized in that, in order to reduce the viscosity of the target product, an additive of selective oil purification or catalytic cracking residues boiling in the range 420 ^o С is used as additives. taken in an amount of 2 to 8 wt.%.

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