Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for removing free oxygen from inferior hydrogenation raw oil

A raw material oil and free oxygen technology, applied in hydrotreating process, petroleum industry, hydrocarbon oil treatment, etc., can solve the problems of waste of coal tar resources, inability to remove free oxygen, coking of distillation tower, etc., and achieve extended operation period, Simple and convenient operation, the effect of improving the running time

Active Publication Date: 2013-05-15
安徽摩力孚再生资源有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method removes heavy components, wastes valuable coal tar resources, and has high cutting temperature, large investment and high energy consumption.
In addition, the operating temperature of 300 ~ 360 ℃ is also easy to cause coking in the distillation tower
[0006] In addition, there are methods such as diluting oil technology, electric desalting technology, and adding coke inhibitors to suppress coking in the device, but none of them can remove free oxygen in inferior hydrogenation feedstock oil.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The coal tar is heated to 120°C, and pumped into the flash tower. The light components at the top of the tower are condensed to recover light oil, and the light oil is returned to the flash tower. The non-condensable gas enters the vent system, and the coal tar in the tower is used as hydrogenation The device feeds, and the hydrogenation process adopts a two-stage process of pre-hydrogenation and main hydrogenation. See Table 1 for the operating cycle of the 100ml hydrogenation unit after the coal tar hydrogenation feed is flashed.

[0022] Table 1 Operation cycle of coal tar after flashing

[0023] Coal tar hydrogenation feed Device running time, h unprocessed 348 after flash 1860

[0024] It can be seen from Table 1 that after the coal tar hydrogenation feed is stripped, the operating time of the device is greatly extended.

Embodiment 2

[0026] The coked gasoline is heated to 120°C and pumped into the flash tower. The light components at the top of the tower are condensed to recover light oil, and the light oil is returned to the flash tower. The non-condensable gas enters the vent system, and the coked gasoline in the tower is used as hydrogenation The device feeds, and the hydrogenation process adopts a two-stage process of pre-hydrogenation and main hydrogenation. See Table 2 for the operating cycle of the 100ml hydrogenation unit after the coker gasoline hydrogenation feed is flashed.

[0027] Table 2 Operation cycle of coked gasoline after flashing

[0028] Coking gasoline hydrogenation feed Device running time, h unprocessed 256 after flash 1782

[0029] It can be seen from Table 2 that after the coal tar hydrogenation feed is stripped, the operating time of the device is greatly extended.

Embodiment 3

[0031] Crude benzene is heated to 70°C and pumped into the flash tower. The light components at the top of the tower are condensed to recover light oil, and the light oil is refluxed to the flash tower. The non-condensable gas enters the vent system, and the crude benzene in the tower is used as hydrogenation The device feeds, and the hydrogenation process adopts a two-stage process of pre-hydrogenation and main hydrogenation. See Table 3 for the operating cycle on the 100ml hydrogenation unit after the crude benzene hydrogenation feed is flashed.

[0032] Table 3 Operation cycle after flashing of crude benzene

[0033] Crude benzene hydrogenation feed Device running time, h unprocessed 196 after flash 2006

[0034] It can be seen from Table 3 that after the coal tar hydrogenation feed is stripped, the operating time of the device is greatly extended.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for removing free oxygen from inferior hydrogenation raw oil. In the method, the inferior hydrogenation raw oil is heated and then conveyed to a flash tower, the free oxygen in the inferior hydrogenation raw oil is carried away by evaporated light components, the light components are condensed to recover light oil which is to be returned to the flash tower, non-condensable gas is exhausted, and the inferior hydrogenation raw oil in the flash tower is used as the feedstock of a hydrogenation device. Compared with the prior art, the method in the invention is simple, feasible and low in investment, prolongs the operation period of the hydrogenation device considerably and is suitable for the hydrogenation process of inferior raw oil, particularly the hydrogenation process of high free oxygen-concentration inferior raw oil.

Description

technical field [0001] The invention relates to the deep processing of inferior hydrogenated feedstock oil, in particular to a method for removing free oxygen from inferior hydrogenated feedstock oil. Background technique [0002] Crude benzene, coal tar, coker gasoline, biomass pyrolysis oil, tire oil and other low-quality raw material oils are hydrogenated and modified to remove sulfur, nitrogen, oxygen, metal impurities, saturated olefins, aromatics and other compounds to improve their stability. High-quality clean fuel oil and chemical raw materials can be obtained. This is not only in line with the national energy strategy and environmental protection policy, but also can bring good economic benefits to the enterprise. [0003] However, the free oxygen present in these low-quality hydrogenated raw oils has a significant promotion effect on coking. Free oxygen can oxidize aromatic mercaptans in low-quality hydrogenation feedstock oil to produce sulfonic acid, and the c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C10G53/02C10G67/14
Inventor 佘喜春李庆华朱方明刘呈立郭朝晖
Owner 安徽摩力孚再生资源有限公司