Condensation system and method for oil-water mixed steam containing drill cuttings dust
A technology of oil-water mixing and steam condensation, which is used in the recovery of liquid hydrocarbon mixtures and the petroleum industry. Small dosage and simple structure
Active Publication Date: 2022-04-12
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
[0006] Aiming at the deficiencies of the prior art, the present invention provides an oil-water mixed steam condensation system and condensation method containing drill cuttings dust, which can solve the problems of low condensation efficiency, large cooling water consumption, large footprint of condensation equipment and equipment blockage by dust
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Embodiment
[0042] This embodiment adopts figure 1 The system shown condenses water vapor from dusty high-temperature mixed oil, and the specific process is as follows:
[0043] The dust-laden high-temperature mixed oil and water vapor at 280°C passes through the cyclone separation device for large particle dust removal.
[0044] The dust-laden high-temperature mixed oil and water vapor enters the temperature-controlled condensing device 2 through the flow divider 203 after dedusting, and directly contacts with the condensate at 120-140°C to condense, most of the oil vapor is condensed into liquid oil, and the water vapor still exists in the form of gas. The residual oil vapor is condensed again by the 30° C. cooling oil delivered by the shower 207 at the baffle plate 206 . Finally, almost all the oil vapor is condensed and output from the condensate outlet 213, and the water vapor is discharged into the atmosphere from the water vapor outlet 208 in gaseous form.
[0045] The liquid oil...
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Abstract
The invention provides an oil-water mixed steam condensing system and a condensing method containing drill cuttings dust. Wherein, the system includes a cyclone separation device, a temperature-controlled condensation device and an oil-water separation device. The steam condensation inlet is connected to the steam outlet of the cyclone separation device, the water vapor outlet is connected to the outside atmosphere, the oil-water separation inlet is connected to the condensate outlet of the temperature control condensation device, the cooling liquid oil outlet is connected to the cooling oil tank inlet, and the cooling oil tank outlet is connected to The cooling oil inlet of the temperature-controlled condensing unit is connected. The invention can solve the problem of dust clogging the condensing device, reduce the consumption of cooling water, reduce the area of the condensing equipment and improve the condensing efficiency.
Description
technical field [0001] The invention relates to the technical field of heat exchangers, and relates to a condensation system and a condensation method for oil-water mixed steam containing drill cuttings dust. Background technique [0002] In recent years, oil-based drilling fluids have been widely used in shale gas production, resulting in a large amount of oil-bearing cuttings. Oily drill cuttings are included in the national list of hazardous wastes because their liquid phase contains dangerous and toxic substances such as heavy oil, acid, alkali, and polymer compounds. Therefore, they need to be treated before being discharged so that the oil content of drill cuttings is less than 1% or more low standards. [0003] Hammer mill thermal analysis technology has the advantages of environmental protection, high efficiency and effective recovery of base oil, and is suitable for the treatment of oily cuttings in shale gas. Oily cuttings are separated from liquid and solid unde...
Claims
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IPC IPC(8): C10G5/06
CPCC10G5/06
Inventor 李琴钟绍鹏罗思涵叶闯李万松
Owner SOUTHWEST PETROLEUM UNIV