40results about How to "Quick income" patented technology

The invention discloses a distillate yield improving vacuum distillation method and device. A flash vaporization vessel is arranged on an oil transfer line between a vacuum furnace and a vacuum distillation tower. Vacuum distillation raw materials enter the oil transfer line and the flash vaporization vessel after being heated by the vacuum furnace. Gas liquid separation is carried out in the flash vaporization vessel: liquid discharged from the bottom of the flash vaporization vessel, namely flash bottom oil, is introduced into the vacuum distillation tower; and gas discharged from the top of the flash vaporization vessel, namely flash top gas, is led out of the device after being condensed into liquid. According to the vacuum distillation method and device with the flash vaporization vessel arranged behind the vacuum furnace, on one hand, the yield of vacuum distillate is increased, on the other hand, a conventional decompression oil transfer line low-speed section is omitted, the operation load of the vacuum tower is reduced, and the diameter of the vacuum tower can be appropriately reduced, so equipment investment is saved, and the operating cost is reduced.

The invention discloses a crude oil deep vacuum distillation process and a system, a first-stage flash column is arranged between an atmospheric distillation column and a vacuum furnace, a vacuum transfer line from the outlet of the vacuum furnace to a vacuum distillation column is eliminated, a second-stage flash column is arranged between the vacuum furnace and the vacuum distillation column, the heavy oil on the bottom of the atmospheric distillation column, i.e. bottom oil, is mixed with cyclic vacuum residue and then the mixture enters into the first-stage flash column; the bottom oil of the first-stage flash column enters into the second-stage flash column with special structure after being heated by the vacuum furnace, the bottom oil of the second-stage flash column is introduced into the flash section of the vacuum distillation column for vacuum distillation. Gas phase producing is performed on the gas phase region upon at lease one liquid phase side line of the vacuum distillation column, and a vacuum pumping system is connected. Compared with the prior art, with the invention, on the one hand, the yield of vacuum residue can be reduced, and economic benefit of the device can be improved; and on the other hand, the load of the vacuum furnace and the vacuum distillation column can be reduced, the equipment investment can be saved, and the energy consumption of the device can be reduced.

The invention discloses a crude oil vacuum distillation method and a device. According to the invention, a vacuum flash tank is added to a vacuum heavy oil outlet at a vacuum distillation tower bottom so as to make the vacuum heavy oil flowing out of the vacuum tower bottom undergo flashing in the vacuum flash tank under the condition of a vacuum degree higher than that of the vacuum tower bottom. A vacuum flash tank top gas enters a gas-liquid separation tank after heat exchange and cooling. The top of the gas-liquid separation tank is in connection with a vacuum-pumping system to maintain the vacuum degree of the flash tank. The vacuum distillate oil extracted from the bottom is taken as a product, and vacuum residual oil is extracted from the vacuum flash tank bottom. The vacuum distillation method disclosed in the invention improves the crude oil vacuum distillation process, and makes the vacuum heavy oil enter the vacuum flash tank with a high vacuum degree to undergo further flashing, thus acquiring relatively light distillate from the vacuum heavy oil by flashing completely and ensuring that the content of distillate lower than 500DEG C in vacuum residual oil is reduced to a minimum. Therefore, the distillate yield of vacuum distillation can be improved, and the economic benefits of the device can be increased.

The invention discloses a pressure reduction distillation process method, in particular to a pressure reduction distillation process applicable to the pressure reduction deep drawing treatment of crude oil pressure reduction distillation. A gas phase extraction opening is arranged in a gas phase region above at least one side line outlet material liquid phase region, and the gas phase extraction opening is connected with a vacuum pumping system. The pressure reduction distillation process method is characterized in that the in-tower sectional vacuum pumping operation is carried out on the gas phase region above each condensing section in a pressure reduction distillation tower, so the vacuum degree in the pressure reduction distillation tower is improved, and further, the vacuum degree of the flash distillation section and the steam extraction section is improved, so more light ingredients in pressure reduction slag oil are evaporated out, and the drawing rate in the crude oil pressure reduction distillation process is obviously improved.

The invention discloses a vacuum distillation method for gradual gasification segmented feed. The method includes: making atmospheric tower bottom oil enter a first stage gasification furnace, conducting heating to make the tower bottom oil enter a first stage flash tank to perform separation, leaving a gas phase to enter an upper fractionation segment of a vacuum tower, and leaving a liquid phase to enter a second stage gasification furnace; heating the liquid phase and making it enter a second stage flash tank, letting the generated gas phase enter a middle fractionation segment of the vacuum tower, and letting the generated liquid phase enter a third stage gasification furnace; heating the liquid phase and making it enter a third stage flash tank, letting the generated gas phase enter a lower fractionation segment of the vacuum tower, and letting the generated liquid phase enter a flash segment of the vacuum tower; and subjecting the feed of each segment to vacuum distillation in the vacuum tower, extracting a lateral line product from a vacuum tower lateral line, and extracting vacuum residue from the tower bottom. The method provided in the invention can substantially enhance the distillate yield of a crude oil vacuum distillation process, reduce equipment energy consumption, increase equipment economic benefits, and save equipment investment.

The invention discloses a method and a device for crude oil deep vacuum distillation. The method disclosed in the invention includes: introducing atmospheric tower bottom oil into a primary gasification furnace, conducting heating and leaving the oil to enter a primary flash tank to undergo separation, making the obtained gas phase enter a vacuum tower upper fractionation section, and letting the liquid phase enter a second stage gasification furnace; heating the liquid phase and making it enter a second-stage flash tank, leaving the obtained gas phase to enter a vacuum tower middle fractionation section, and making the obtained liquid phase enter a third-stage gasification furnace; heating the liquid phase and making it enter a third-stage flash tank, letting the obtained gas phase enter a vacuum tower lower fractionation section, and leaving the obtained liquid phase to enter a vacuum tower flash section; subjecting the feed of each section to vacuum distillation is the vacuum, extracting a lateral line product from a vacuum tower lateral line, and extracting vacuum residual oil from the tower bottom; and introducing part of the vacuum residual oil into the flash tanks of different stages respectively. The method provided in the invention can significantly improve the distillate yield of the crude oil in the distillation process, reduce device energy consumption, increase device economic benefits, and save device investment.

The invention discloses a reduced pressure distillation method and a reduced pressure distillation device. A flash tower is arranged between a reduced pressure furnace and a reduced pressure distillation tower, an oil transfer line is canceled, a reduced pressure distillation raw material is heated in the reduced pressure furnace and then directly enters the flash tower, and gas-liquid separation is performed in the flash tower; the liquid phase, namely flash bottom oil, discharged from the bottom of the flash tower is introduced into the reduced pressure distillation tower; and the gas phase, namely flash top gas, discharged from the top of the flash tower is condensed into liquid phase, and the liquid phase is led out of the device. According to the reduced pressure distillation method and the reduced pressure distillation device using the flash tower in back of the reduced pressure furnace, on the one hand, the yield of reduced pressure distillate is improved; and on the other hand, the conventional reduced pressure oil transfer line is canceled, the operation load of the reduced pressure tower is reduced, and the diameter of the reduced pressure tower can be properly reduced so that the equipment investment is saved and the operation cost is lowered.

The invention discloses a crude oil deep drawing process method. Partial pressure reduction slag oil cyclically returns to a position in front of a pressure reduction furnace to be mixed with heavy oil at the bottom of a normal pressure distillation tower for entering a pressure reduction flash distillation tower arranged in front of the pressure reduction furnace, high-temperature hydrogen or nitrogen or overheated steam accounting for 1 percent to 3 percent of the mass of inlet materials is introduced into the tower bottom of the pressure reduction flash distillation tower, the tower top gas phase of the pressure reduction flash distillation tower is converted into a liquid phase to be used as products through heat exchange and condensing, bottom oil of the pressure reduction flash distillation tower is introduced into the pressure reduction distillation tower for pressure reduction distillation after being heated through the pressure reduction furnace, pressure reduction fraction oil is extracted out from the side line of the pressure reduction distillation tower, pressure reduction slag oil is extracted from the tower bottom of the pressure reduction distillation tower, a part of the pressure reduction slag oil is sent out of the device, and a part of the pressure reduction slag oil cyclically returns to the pressure reduction flash distillation tower for recycling. In the method, heat carried by the high-temperature cyclic pressure reduction slag oil and the steam extraction effect of the high-temperature nitrogen are sufficiently utilized, and lighter fraction in the normal bottom oil is evaporated out in the pressure reduction flash distillation tower. The yield of the pressure reduction slag oil is reduced, and in addition, the load of the pressure reduction furnace is reduced.

The invention discloses a reduced-pressure flash tank and a crude oil reduced-pressure distillation method. The reduced-pressure flash tank comprises a tank body, a supergravity rotating evaporator is arranged in a gas phase area in the upper part of the reduced-pressure flash tank, and the rotating evaporator is fixed on a rotating shaft arranged at a longitudinal axial center position of the tank body. In the crude oil reduced-pressure distillation method, the reduced-pressure flash tank is arranged between a reduced-pressure furnace and a reduced-pressure distillation tower, a reduced-pressure distillation raw material is heated in the reduced-pressure furnace and then enters the reduced-pressure flash tank for evaporation and gas-liquid separation, a liquid phase, namely bottom oil, discharged from the bottom of the reduced-pressure flash tank is introduced into the reduced-pressure distillation tower, and a gas phase, namely a top gas, discharged from the top of the reduced-pressure flash tank is discharged from the flash tank and is condensed into a liquid phase to be led out of the device. When the reduced-pressure flash tank and the crude oil reduced-pressure distillation method are used, the drawing rate of a crude oil reduced-pressure distillation process can be increased obviously, and the energy consumption of the device can be lowered.