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Feed filter backwashing process and backwashing system in lubricating oil hydrogenation process

A hydrogenation process and filter technology, which is applied in the field of lubricating oil hydrogenation, can solve the problems of poor filtration effect, many impurities, and fast consumption of feed filtration system

Active Publication Date: 2017-06-27
HAINAN HANDI SUNSHINE PETROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the source of raw oil used by existing lubricating oil hydrogenation manufacturers is unstable, and the quality is uneven, especially the various impurities in raw oil products, which lead to unevenness in the entire lubricating oil hydrogenation process. Stable, seriously affecting the finished product quality of hydrogenated lubricating oil
Usually, for the filtration system of raw material oil, the manual operation is cumbersome and the workload is heavy, and often because the regeneration and cleaning of the filtration system is not thorough, the filtration system that has just been put into use has poor filtration effect in a short period of time, and not only needs to be replaced frequently In addition, during the replacement process, impurities, particles, rust, polycyclic aromatic hydrocarbons, etc. are likely to enter the rear path, which will affect the high-pressure feed pump components, reactor bed pressure drop and catalyst activity in the subsequent lubricating oil hydrogenation system , life expectancy, etc. have a negative impact on
In addition, the polycyclic aromatic hydrocarbons, wax, rust and impurities contained in raw oil may easily cause cost control problems such as rapid consumption and scrapping of the feed filter system

Method used

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  • Feed filter backwashing process and backwashing system in lubricating oil hydrogenation process
  • Feed filter backwashing process and backwashing system in lubricating oil hydrogenation process
  • Feed filter backwashing process and backwashing system in lubricating oil hydrogenation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Production of 82# lubricating oil with a daily output of 712 tons

[0067] The raw oil comes from the raw oil tank area, is pumped up to 1.0Mpa, and enters the first feed filter through the pipeline. Under the conditions of temperature of 110°C, filter inlet pressure of 0.85MPa, and outlet pressure of 0.84MPa, After being filtered by the first feed filter, it enters the subsequent lubricating oil hydrogenation process to obtain hydrogenated lubricating oil.

[0068] The above steps run continuously. When the outlet pressure of the first feed filter is 0.75 MPa, the automatic control program switches the raw oil to be filtered through the second feed filter, and then enters the subsequent lubricating oil hydrogenation process to obtain hydrogenated lubricating oil.

[0069] After the above switching steps, the automatic control system opens the backflush medium purge pipeline, and the nitrogen gas is passed through the purge pipeline into the first feed filter for purge....

Embodiment 2

[0083] Production of 10# lubricating oil with a daily output of 789 tons

[0084] The raw oil comes from the raw oil tank area, is pumped up to 1.0Mpa, and enters the first feed filter through the pipeline. Under the conditions of temperature of 110°C, filter inlet pressure of 0.85MPa, and outlet pressure of 0.84MPa, After being filtered by the first feed filter, it enters the subsequent lubricating oil hydrogenation process to obtain hydrogenated lubricating oil.

[0085] The above steps run continuously. When the outlet pressure of the first feed filter is 0.65MPa, the automatic control program switches the raw oil to be filtered through the second feed filter, and then enters the subsequent lubricating oil hydrogenation process to obtain hydrogenated lubricating oil.

[0086] After the above switching steps, the automatic control system opens the backflush medium purge pipeline, and the nitrogen gas is passed through the purge pipeline into the first feed filter for purge. ...

Embodiment 3

[0099] Production of 32# lubricating oil with a daily output of 811 tons

[0100] The raw oil comes from the raw oil tank area, is pumped up to 1.0Mpa, and enters the first feed filter through the pipeline. Under the conditions of temperature of 110°C, filter inlet pressure of 0.85MPa, and outlet pressure of 0.84MPa, After being filtered by the first feed filter, it enters the subsequent lubricating oil hydrogenation process to obtain hydrogenated lubricating oil.

[0101] The above steps run continuously. When the outlet pressure of the first feed filter is 0.70MPa, the automatic control program switches the raw oil to be filtered through the second feed filter, and then enters the subsequent lubricating oil hydrogenation process to obtain hydrogenated lubricating oil.

[0102] After the above switching steps, the automatic control system opens the backflush medium purge pipeline, and the nitrogen gas is passed through the purge pipeline into the first feed filter for purge. ...

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PUM

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Abstract

The invention provides a feed filter backwash process and a backwash system in the lubricating oil hydrogenation process. First, the feed oil is filtered through the first feed filter, and the pressure difference between the inlet and outlet of the first feed filter reaches After setting the value, switch raw oil to filter through the second feed filter; then pass the backflush medium into the first feed filter for purging, and then pass the backflush medium into the first feed filter for brewing , to obtain the cleaned first feed filter; finally, after the pressure difference between the inlet and outlet of the second feed filter reaches the set value, switch the feed oil to the cleaned first feed filter for filtration. The above process system provided by the present invention can work stably for a long time, has a long service life, and is easy to operate.

Description

technical field [0001] The invention relates to the technical field of lubricating oil hydrogenation, and more specifically relates to a feed filter backwashing process and a backwashing system in the lubricating oil hydrogenation process. Background technique [0002] The production of lubricating oil by hydrotreating is a new process developed rapidly in the late 1960s and early 1970s and pushed to industrial applications. Simply put, hydrogenation is to increase the hydrogen content in oil. Hydrogenation of lubricating oil can improve fuel economy and is beneficial to environmental protection, and this process can produce lubricating oil base oil with high viscosity index from low-quality raw materials, and has the characteristics of high yield, large operation flexibility and high value of by-products. Therefore, it has received extensive attention and vigorous development in the field of lubricating oil. [0003] Lubricant base oil hydrotreating (hydrocracking) is to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G49/00
Inventor 谷强王东升
Owner HAINAN HANDI SUNSHINE PETROCHEM