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Crude oil continuous distillation and dehydration method

A technology of crude oil and dehydration device, which is applied in the dehydration of hydrocarbon oil, etc., and can solve the problems of energy consumption, time consumption, and limited amount of dehydrated crude oil.

Active Publication Date: 2016-06-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the existing distillation dehydration method, on the one hand, due to the limitation of the volume of the device, the amount of dehydrated crude oil obtained each time is limited. If a large amount of dehydrated crude oil needs to be obtained, the operation needs to be repeated many times, which not only consumes energy but also takes time.

Method used

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  • Crude oil continuous distillation and dehydration method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Turn on the power, set the temperature of the temperature-controllable feed pump 33 and the third heater 32 to 50° C. according to the freezing point and viscosity of the crude oil, and keep it for 10 minutes. The temperature of the second heater 22 and the upper heater 121 was set to 200°C, and the temperature of the lower heater 122 was set to 250°C. Set the temperature of the second cooling component 51 and the light oil and water storage tank 52 to 1°C, and set the temperature of the first cooling component 41 to 60°C. The cooling temperature of the gaseous hydrocarbon recovery tank 53 is -90°C.

[0085] Crude oil with a water content of 53.1% by mass was dehydrated at a temperature-controllable feed pump (gear pump) flow rate of 16ml / min. The distillation time for light oil and heavy oil was 5 minutes, and the dehydration time was 230 minutes. The mass of crude oil feed was 3099 grams, the mass of extracted water was 1639 grams, the water content of dehydrated cru...

Embodiment 2

[0087] Set the temperature of the temperature-controllable feed pump 33 and the third heater 32 to 100° C. and keep it for 10 minutes. The temperature of the second heater 22 and the upper heater 121 was set to 300°C, and the temperature of the lower heater 122 was set to 300°C. Set the temperature of the second cooling assembly 51 and the light oil and water storage tank 52 to 10°C, and set the temperature of the first cooling assembly 41 to 100°C. The cooling temperature of the gaseous hydrocarbon recovery tank 53 is -100°C.

[0088] The crude oil with a water content of 1.1% by mass is dehydrated at a temperature-controllable feed pump (gear pump) feed rate of 16ml / min. The distillation time of light oil and heavy oil is 5 minutes, and the dehydration time is 230 minutes. The material quality is 3204 grams, the crude oil dehydrated water quality is 35 grams, and the water content of dehydrated crude oil is trace (<0.03 mass %). The calculated crude oil dehydration rate is ...

Embodiment 3

[0090] Set the temperature of the temperature-controllable feed pump 33 and the third heater 32 to 20° C. and keep it for 10 minutes. The temperature of the second heater 22 and the upper heater 121 was set to 200°C, and the temperature of the lower heater 122 was set to 250°C. Set the temperature of the second cooling component 51 and the light oil and water storage tank 52 to 1°C, and set the temperature of the first cooling component 41 to 60°C. The cooling temperature of the gaseous hydrocarbon recovery tank 53 is -90°C.

[0091] The crude oil with a water content of 63.6% by mass is dehydrated at a temperature-controllable feed pump (gear pump) feed rate of 16ml / min. The distillation time of light oil and heavy oil is 5 minutes, and the dehydration time is 390 minutes. The mass of the raw material is 5311 grams, the mass of dehydrated water is 3314 grams, the water content of the dehydrated crude oil is 3.2 mass %, and the dehydration rate of the crude oil is calculated ...

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Abstract

The invention discloses a crude oil continuous distillation and dehydration method. The dehydration method includes that water-containing crude oil is continuously introduced into a feeding and conveying pipeline of a feeding and conveying assembly of an crude oil continuous distillation and dehydration device, then enters a pre-heating pipeline in a pre-heating assembly, is pre-heated, next enters a shell body of a shell body assembly and is distilled; water and light oil in the crude oil are discharged from a gas phase outlet at the upper part of the shell body, are condensed by a distillation gas recovery assembly and then enter a light oil and water storage tank, wherein the water is discharged from the bottom of the light oil and water storage tank, and gas hydrocarbons are discharged from the upper part of the light oil and water storage tank and then enter a gas hydrocarbon recovery tank; heavy oil in the crude oil is discharged from a liquid phase outlet at the lower part of the shell body, is condensed by a heavy oil recovery assembly and then enters a heavy oil recovery tank. A to-be-dehydrated material (such as the crude oil) is subjected to pre-heating treatment on the pre-heating pipeline, and then the to-be-dehydrated material after heating treatment is distilled in the shell body assembly and is subjected to gas-liquid separation at the same time to achieve dehydration.

Description

technical field [0001] The invention relates to a method for distillation and dehydration of oil products, in particular to a method for distillation and dehydration of crude oil. Background technique [0002] For crude oil evaluation and oil product analysis, the presence of water in the sample will have a direct impact on the analysis and testing items of the sample, such as density, flash point, distillation range, viscosity, ash, carbon residue, freezing point, metal, etc. Crude oil and oil products must be dehydrated before evaluation, analysis and testing. [0003] At present, there are many methods for crude oil dehydration in the laboratory, including sedimentation dehydration, autoclave dehydration, electric dehydration, microwave dehydration and distillation dehydration. Among them, the distillation dehydration method is to heat the oil to vaporize the water to achieve the purpose of dehydration of the oil. This method can almost remove all the water in the oil, ...

Claims

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Application Information

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IPC IPC(8): C10G7/04
Inventor 王京范登利李虎
Owner CHINA PETROLEUM & CHEM CORP
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