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 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.