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Atmospheric and vacuum distillation device and atmospheric and vacuum distillation method of high acid-content crude oil

An atmospheric and vacuum distillation and equipment technology, which is applied in hydrocarbon distillation, petroleum industry and other directions, can solve the problems of low service life of equipment, influence, product quality corrosion, etc., and achieve good economic benefits and reduce costs.

Active Publication Date: 2010-01-13
CNOOC OIL & PETROCHEMICALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned atmospheric and vacuum distillation equipment is generally made of carbon steel. Such atmospheric and vacuum distillation equipment can generally meet the requirements for processing crude oil with conventional acidity. However, when using such equipment to process highly acidic crude oil, such as Penglai High When using sour crude oil, it cannot meet the anti-corrosion requirements, the service life of the equipment is low, the product quality is affected by equipment corrosion, and the cost of subsequent treatment is increased.

Method used

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  • Atmospheric and vacuum distillation device and atmospheric and vacuum distillation method of high acid-content crude oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] This embodiment is used to illustrate the atmospheric and vacuum distillation equipment and atmospheric distillation method for high sour crude oil provided by the present invention.

[0054] use figure 1 The shown atmospheric and vacuum distillation equipment and process flow are used for atmospheric and vacuum distillation processing of Penglai PL19-3 crude oil after electric desalination. Among them, the properties of No. PL19-3 crude oil are as shown in the above table 1. After electric desalting, the salt content is less than 3 mg / liter (test method GB6532-86), and the water content is less than 0.1% by weight (test method GB260-77). Less than 1 mg / L (atomic absorption spectrometry). The processing capacity is 12 million tons / year. The atmospheric tower in the atmospheric and vacuum distillation equipment has a total of 44 trays, and the tower body between the top of the tower and the 40th tray is made of 16MnR steel with a thickness of 22 mm and Monel alloy with...

Embodiment 2

[0062] This embodiment is used to illustrate the atmospheric and vacuum distillation equipment and atmospheric distillation method for high sour crude oil provided by the present invention.

[0063] According to the method of Example 1, the PL19-3 crude oil with an acid value content of 3.3 mg KOH / gram is subjected to atmospheric and vacuum distillation. The difference is that only the atmospheric tower, vacuum tower, and atmospheric furnace in the atmospheric and vacuum distillation equipment The material of the vacuum furnace is the same as that of Example 1, and the material of other parts or parts shown in Table 2 is the material 16MnR used in conventional atmospheric and vacuum distillation equipment.

[0064]It was found that after one year of continuous operation of the equipment, the corrosion amount of the tower body between the top of the atmospheric tower and the 40th tray was 0.01 mm, the corrosion amount of the tray was 0.01 mm, and the corrosion amount from the 40...

Embodiment 3

[0066] This embodiment is used to illustrate the atmospheric and vacuum distillation equipment and atmospheric distillation method for high sour crude oil provided by the present invention.

[0067] According to the method of Example 1, the PL19-3 crude oil with an acid value content of 3.5 mg KOH / g was subjected to atmospheric and vacuum distillation. The difference is that the materials of the atmospheric and vacuum distillation equipment are shown in Table 3.

[0068] table 3

[0069]

[0070]

[0071] It was found that after one year of continuous operation of the equipment, the corrosion amount of the tower body between the top of the atmospheric tower and the 40th tray was 0.02 mm, and the corrosion amount of the tray was 0.01 mm. The corrosion amount of the tower body between the bottom is 0.02 mm, the corrosion amount of the tray is 0.02 mm, the corrosion amount of the convection tube of the atmospheric furnace is 0.01 mm, and the corrosion amount of the radiant ...

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Abstract

The invention provides an atmospheric and vacuum distillation device and an atmospheric and vacuum distillation method of high acid-content crude oil. The device comprises an atmospheric tower, an atmospheric kiln, a vacuum tower and a vacuum kiln, wherein the atmospheric tower comprises a tower body, a tower tray and stuffing. The tower tray of the atmospheric tower has more than 40 layers, wherein the tower body of the atmospheric tower between the 40th layer of the tower tray and the tower top is made of metallic composite of one or a plurality of Monel, 0Cr13, 316L, SAF2205, SAF2507 and SAF 2304 and carbon steel, the tower tray is made of one or a plurality of Monel, 0Cr13, 316L, SAF2205, SAF2507 and SAF 2304, the tower body of the atmospheric tower between the tower bottom and the 40th layer of the tower tray is made of metallic composite of 316 L and carbon steel, the tower trays from the 28th layer to the 39th layer are made of 0Cr13 material and the tower trays from the first layer to the 28th layer are made of 316L. The atmospheric and vacuum distillation device effectively solves the problem of device corrosion in the atmospheric and vacuum distillation of high acid-content crude oil.

Description

technical field [0001] The invention relates to an atmospheric and vacuum distillation equipment, in particular to an atmospheric and vacuum distillation equipment and an atmospheric and vacuum distillation method for high-acid crude oil. Background technique [0002] Atmospheric and vacuum distillation is a commonly used method in crude oil processing. It is usually the first process in crude oil processing. It uses the principle of distillation to separate crude oil into various fractions with different boiling points to obtain various oil products and raw materials for downstream processing units. . The design and operation of atmospheric and vacuum distillation equipment have a great influence on the product quality, yield and effective utilization of crude oil in the refinery. [0003] figure 1 A schematic diagram of conventional process flow and equipment structure of atmospheric and vacuum distillation of crude oil is shown. Such as figure 1 As shown, the atmosphe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G7/00
Inventor 董孝利吴青姜涛郑明光夏长平陈淳黄梓友苑少军王旭安辉
Owner CNOOC OIL & PETROCHEMICALS CO LTD
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