Petroleum products producing plant

FIELD: petroleum processing and petrochemistry.

SUBSTANCE: invention relates to low-size apparatuses for production of light and heavy petroleum products from petroleum feedstock. Plant comprises heat-insulated evaporation vessel provided with electroheating ring, heat-exchanger coupled with evaporation vessel, petroleum product storage vessel, and valves, said evaporation vessel is provided with secondary heating ring and said heat-exchanger is constituted by two different-volume vessels, which are connected over coils to petroleum product storage vessel also provided with heating ring. Minor heat-exchange vessel communicates with evaporation vessel space through perforated pipe and major one communicates with evaporation vessel and minor heat-exchange vessel through pumps.

EFFECT: simplified structure and increased output of motor distillates.

1 dwg, 1 tbl

 

The invention relates to petrochemistry, and more particularly to a small-sized devices for oil (fuel oil) light and heavy petroleum products.

Known installation for continuous production of light-weight and heavy oil containing a firing furnace, distillation column, heat exchangers and tanks for oil collection. (VNIIG, Megasena, Meglumin. Chemistry and technology of oil and gas. - L.: Chemistry, 1977, pagination 126, rice).

A disadvantage of the known device is the design complexity due to the presence of fire furnaces and distillation columns, as well as a significant heat loss [in the oven] and air pollution. This prevents the use of this device as a small eco-friendly installations.

Known apparatus for producing oil containing insulated evaporative capacity with electric heating belt, a heat exchanger, coupled with evaporative capacity, capacity for petroleum products, pumps and valves (Patent RF №2175340, Appl. 03.08.2000 G., ed. Igoshin, VA, publ. BI No. 30, 27.10. 2001).

A disadvantage of this device are low yield of distillate fuels and the quality of petroleum products. Naphtha is low octane number, distillate oil require purification and separation of the viscosity, oxidized bitumen is characterized by insufficient the ductility (elongation), and the distillation of the oxidation process for aggressive capacity and the environment. Another drawback is the complexity of the design due to the necessity of using a vacuum pump and buffer tank for pumping oils and centrifugal-bubbling device for oxidation of oil residue (tar) to bitumen.

The technical effect of the invention is to increase the output of motor distillates while simplifying the structure.

This objective is achieved in that in the known device, containing insulated evaporative capacity with electric heating belt, a heat exchanger, coupled with evaporative capacity, capacity for petroleum products, pumps and valves, according to the invention, the evaporation tank is provided with a bottom heating zone and connected with the heat exchanger of the two containers of different sizes, which are connected with additional electronography capacity and large heat capacity are connected through pump evaporative capacity and low heat capacity, and the bottom of the small heat capacity is connected with the internal volume of the evaporation vessel through a pipe with a perforated tube.

The drawing shows a simplified diagram of the inventive device. It contains evaporative capacity of 1 with the top 2 and bottom nagrevatelnyh belts, the tube with the holes 4. The upper pipe of the tank 1 is connected to the coil of the tank 5 and the first coil of the tank 6. Moreover, the output coil tank 5 is connected to the input of the second coil capacity 6, bottom outlet tank 5 is connected to the input of the third coil tank 6 and the lower branch vessel 5 is connected by means of valves with tube 4 of the tank 1 and the pump 7 from the lower outlet of the container 6. Through crane capacity 1 are connected by a pump 8 with an average inlet capacities of 6 and a drain line of bituminous products. The top nozzle of the container 6 is directly connected with gasoline highway, located below the nozzle through a valve connected with the drain oil line, and the outlet at the bottom with liquid oil line. The fourth coil tank 6 is connected to the outlet pipe of the tank 9 with a heating belt 10, the outputs of the coils tank 6 is connected via taps with gasoline or diesel highways in addition to the output of the first coil is connected through the valve to the inlet side container 9, the bottom pipe which is connected to the main gas.

The proposed system for producing oil works as follows. Oil is pumped liquid line into the tank 6 by ~85% of the volume to the overflow pipe, then first a large part of the volume through the pump 8 Sukacheva is conducted into the container 1 by ~85%, and then a smaller pump 7 into the container 5 also at ~85%. Further, the container 6 is filled again.

When turning on the heating belt 3 is distilled oil, petrol and diesel fraction, which in the vapor phase through the coil capacity 5 (the valve on the outlet piping of the primary coil, the container 6 is closed) and condense, thereby increasing the temperature of the oil in the tank 5 and its evaporation. When the temperature selection of diesel fractions taps on output lines from the coils switch from gasoline to the corresponding diesel highway. Upon reaching the end temperature of the selection of the diesel fraction from the container 1, the output of the second coil taps switches to the tank 9 with continued heating oil in the tank 5.

Heat the oil in the tank 1 is continued to a temperature of ~360°Sec, then turns off the lower zone heating 3 and turns on zone 2, through which the upper layer of the resulting oil is heated to a temperature of ~410°C. Upon completion of the selection of diesel fractions from the tank 5 in the vapor phase of the tank 1 is condensed primarily in the first coil capacity 6 and when you open the faucet enters the tank 9.

Further, the oil received in the tank 5, through the open faucet sprayed from the tube with 4 holes on the surface (mirror) hot (~410° (C) fuel oil capacity is 1, where there is a thermochemical decomposition of contacting the hydrocarbons with the formation of light and heavy fractions. Light distillates go into the tank 9, and the heavy solastalgia substances are deposited in the container 1, in which the temperature difference prevents coking of sediment. At the end of the process of cracking the tank 5 is released from the oil in the tank 1 remains viscous bituminous products in the vessel 9 is accumulated distillate fractions, and in the tank 6 is heated by oil, and evaporating light gasoline comes directly in gasoline highway. After release from the container 1 bituminous products, it is filled through the valve by the pump 8, and the tank 5 through the valve by the pump 7 heated oil from the tank 6, after which the container 6 is filled with fresh oil. Then the cycle is repeated with the difference that simultaneously with the turning on of the heating belt 3 is switched on, the heating belt 10 of the container 9 which justify the gasoline-diesel fractions and drain the remaining oil. In the vessel 9 that all happens before the receipt of distillates from the tank 1. Volume of tank 5 is selected as the pickup in it the gasoline-diesel fractions due to condensation of vapors from the tank 1 at temperatures up to ~400°C.

Additional heating zone 3, located at the bottom of the tank 1, by circulating oil promotes rapid p is the rise in temperature of the light fractions, focusing on the surface of the liquid, and evaporation to education in the balance of heavy fuel oil at ~360°C, after which the heater 3 is turned off, but the temperature varies little due to the insulation. Subsequent switching of the heating zone 2 and the temperature increase leads to the intensification of the process of cracking the top layer of oil, which provides an additional yield of distillate products. Further, the spray of fuel oil through the perforated tube from the tank 5 at a temperature of 330-350° “the mirror” with a temperature of ~410°and thermochemical decomposition of contacting a heavy hydrocarbon leads not only to stabilize the reaction temperature and volume of the liquid in the tank 1, but also to the additional accumulation of distillate in the vessel 9 in the absence of coking settling in the tank 1 maloosveshchennyh substances. Secondary distillation is heated distillate in the vessel 9 by the heater 10, it's possible in “pure” form to receive gasoline and diesel fuel for a short time before the cracking processes in the vessel 1. The pumps 7 and 8, which pumps heated in the vessel 6 oil in the “hot” tank 1 and 5, to reduce the period of the technological cycle, which ultimately increases the performance (including the output of motor distillates) installation. It should be noted that the heating of the evaporation vessel 1 only nag is ovatelnym zone 2 (prototype) does not allow you to adjust the temperature at the bottom of the vessel within the required limits, consequently, the formation of bituminous product required parameters.

Bituminous products and oil, pour out at a high temperature, passed through a heat exchanger (not shown), the heat of which can be disposed of in water (for fire and domestic purposes) or oil, then served in the capacity of 6.

Bituminous products are used as a road binder, binder for briquetting coal, ingredient coatings and pastes for corrosion protection, and the oil can be raw material for further processing (including fine coal) or be used as boiler fuel.

Comparison of tangible assets (%) current setup of the prototype and experimental device with the volume of the evaporative capacity of 1 l is shown in the table for the Talakan oil field in the Republic of Sakha (Yakutia).

Table
ProductsThe placeholderThe inventive device
The straight-run gasoline8 (PTS~50)8 (PTS~50)
Gasoline octane”-5 (PTS>60)
Diesel fuel3856
Distillate oil20-
G is soil -8
Oxidized bitumen30 (Ductility~60)-
Bitumen oxidised-20 (Ductility>80)
The distillation3-
Loss (gases)13

The table shows that the output of motor distillates in the inventive device is considerably higher secondary gasoline more “octane”than straight-run and non-oxidized bitumen characterized by a greater elongation than oxidized, and aggressive distillate is missing.

The exception of the vacuum pump, buffer and oxidative capacities of centrifugal bubbler and corroding tanks for distillate substantially simplifies the design and reduces the size of the installation.

These features of the invention are its differences from the prototype and determine the novelty of the proposal. These differences are significant because they enable the creation of a positive effect, reflected in the objectives of the proposal, and there are no known technical solutions with the same effect.

Device for producing oil containing insulated evaporative capacity with electric heating belt, a heat exchanger, coupled with evaporative capacity, the capacity of the DL is oil, pumps and valves, characterized in that the evaporation tank is provided with an additional heating zone, the heat exchanger is composed of two various scaled containers, which coils are connected with capacity for petroleum products is also equipped with a heating belt, and a small heat capacity associated with the cavity of the evaporative capacity of the perforated tube, and a large heat capacity through the pump is connected with the evaporator and low heat capacities.



 

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1 dwg

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