Process of recycling atmospheric and vacuum distillation unit light dydrocarbon
A technology of atmospheric and vacuum distillation and light hydrocarbons, which is applied in the petroleum industry and the treatment of hydrocarbon oils, etc. It can solve the problems of heavy equipment maintenance workload, high energy consumption of compressors, and large equipment occupation, so as to achieve high equipment maintenance costs and save energy. Operating costs and the effect of occupying a large area
Inactive Publication Date: 2016-08-24
LUOYANG PETROCHEMICAL ENG CORP SINOPEC +1
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Problems solved by technology
In order to overcome the shortcomings of the existing "compressor solution", such as large equipment occupation, heavy equipment maintenance workload, high cost, high investment, complicated process and high energy consumption of the compressor; at the same time, it overcomes the high energy consumption, Disadvantages such as high equipment investment
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[0028] Such as figure 1 as shown, figure 1 It is the first process for recovering light hydrocarbons from atmospheric and vacuum distillation units. The crude oil enters the initial distillation tower 1 after heating up, and the oil gas at the top of the initial distillation tower 1 passes through the initial top oil-gas cooling equipment 21 and the initial top oil-gas low-temperature condensation equipment 22, and then enters the initial top product and reflux tank 23, and the initial top product and reflux tank 23. The initial overhead oil in the tank 23 is divided into two parts after being boosted by the initial overhead product and the return oil pump 24, one part returns to the initial distillation tower 1 as reflux, and the other part is sent to the feed buffer tank 15 in the light hydrocarbon recovery unit, and the initial distillation tower 1 The bottom oil of the tower enters the lower part of the atmospheric tower 3 after the normal pressure furnace 2 heats up, and...
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The invention discloses a process of recycling atmospheric and vacuum distillation unit light dydrocarbon. The defects that an existing device is large in occupied space, large in maintenance workload, high in investment, complex in procedure and the like are overcome. The method comprises the steps that crude oil enters a primary tower after being heated, oil gas at the top of the primary tower enters a topping oil gas cold exchange device, material flow discharged out of the topping oil gas cold exchange device enters a topping product and a return tank, oil in the topping product and the return tank is divided into two parts after being boosted, one part of oil returns the primary tower as backflow, the other part of oil is conveyed to a light dydrocarbon recovery unit, tower bottom oil of the primary tower enters the lower portion of an atmospheric tower after being heated, tower top oil gas of the atmospheric tower enters the light dydrocarbon recovery unit after being subjected to primary condensation or secondary condensation, and primary top oil and atmospheric top oil are divided into dry gas, liquefied gas, naphtha and the like in the light dydrocarbon recovery unit, wherein an oil gas pipeline on the top of the primary power and an oil gas pipeline on the top of the atmospheric tower are provided with low-temperature condensation devices, so that light dydrocarbon components in the oil gas are completely condensed in the oil phase.
Description
technical field [0001] The invention belongs to the field of atmospheric and vacuum distillation, in particular to a recovery process of light hydrocarbon components in an initial distillation-atmospheric distillation device. Background technique [0002] At present, there are mainly two schemes for the recovery of light hydrocarbon components in the atmospheric and vacuum distillation unit, one is the "compressor scheme"; the other is the "no compressor scheme", also known as the "primary distillation column pressure-lifting operation scheme" . [0003] There are two methods of "compressor scheme", the most common one is: the atmospheric part of the atmospheric and vacuum device adopts the flash evaporation-atmospheric distillation process scheme, and the light hydrocarbon-containing oil and gas separated from the constant top reflux tank is compressed After boosting the pressure (about 1.0MPa), it is mixed with part of the boosted constant top oil to make it dissolve in t...
Claims
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Inventor 畅广西李和杰赵予川钱锋陆晓青
Owner LUOYANG PETROCHEMICAL ENG CORP SINOPEC