Gasoline sweetening device

A technology for sweetening gasoline, which is applied in the field of gasoline sweetening, which can solve the problems of safety hazards and gasoline explosions, and achieve safe operation, avoid waste, and good results

Active Publication Date: 2014-12-03
SHANDONG SHOUGUANG LUQING PETROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of gasoline sweetening, in order to promote the oxidation reaction, a non-purified air pipeline is installed at the entrance of the fixed bed reactor, but when the operation is abnormal, such as the pressure reduction of the non-purified air will cause the gasoline to flow back, the currently used The solution is to add a one-way valve or a quick cut-off valve on the non-purifying air pipeline, and quickly cut off the valve when gasoline backflow occurs. This solution will still cause some gasoline to flow back into the non-purifying air pipeline, and gasoline remains in the non-purifying air pipeline. There will be an explosion in the air pipeline, which will lead to certain safety hazards

Method used

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  • Gasoline sweetening device

Examples

Experimental program
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Effect test

Embodiment 1

[0020] The gasoline sweetening device comprises a fixed bed reactor 1, the lower inlet of the fixed bed reactor 1 is connected with a gasoline inlet pipe 2, and the gasoline inlet pipe 2 is successively provided with a gasoline pump 21, a gasoline inlet valve 22 and a mixer 23, and the mixer 23 communicates with a non-purifying air pipe 3, and the non-purifying air pipe 3 is connected with a check valve 31, an air compressor 32 and a non-purifying air storage tank 33 in sequence, and a buffer tank 34 is also arranged on the non-purifying air pipe 3, and the buffer tank 34 is located between the one-way valve 31 and the air compressor 32, and the buffer tank 34 is provided with a gasoline reverse flow indicator 341. The stabilized gasoline from the stabilization tower is pre-washed with lye to remove hydrogen sulfide, and then further removes mercaptans in a fixed-bed reactor. The mercaptans in the gasoline react catalytically with the catalyst in the fixed-bed reactor to form d...

Embodiment 2

[0022] The gasoline sweetening device comprises a fixed bed reactor 1, the lower inlet of the fixed bed reactor 1 is connected with a gasoline inlet pipe 2, and the gasoline inlet pipe 2 is successively provided with a gasoline pump 21, a gasoline inlet valve 22 and a mixer 23, and the mixer 23 communicates with a non-purifying air pipe 3, and the non-purifying air pipe 3 is connected with a check valve 31, an air compressor 32 and a non-purifying air storage tank 33 in sequence, and a buffer tank 34 is also arranged on the non-purifying air pipe 3, and the buffer tank 34 is located between the one-way valve 31 and the air compressor 32. The buffer tank 34 is provided with a gasoline backflow indicator 341, and the buffer tank 34 is also provided with a liquid level gauge 342. The bottom of the buffer tank 34 is connected with gasoline through the gasoline recovery pipe 4. The recovery tank 5 and the gasoline recovery pipe 4 are provided with a gasoline recovery valve 41, the g...

Embodiment 3

[0024] The gasoline sweetening device comprises a fixed bed reactor 1, the lower part of the fixed bed reactor 1 is connected with a gasoline inlet pipe 2, and the gasoline inlet pipe 2 is successively provided with a gasoline pump 21, a gasoline inlet valve 22 and a mixer 23, and the mixer 23 Connected with a non-purifying air duct 3, the non-purifying air duct 3 is sequentially provided with a check valve 31, an air compressor 32 and a non-purifying air storage tank 33, and the non-purifying air duct 3 is also provided with a buffer tank 34, a buffer tank 34 Located between the one-way valve 31 and the air compressor 32, the buffer tank 34 is provided with a gasoline backflow indicator 341, and the buffer tank 34 is also provided with a liquid level gauge 342;

[0025] The bottom of buffer tank 34 is communicated with gasoline recovery tank 5 through gasoline recovery pipe 4, gasoline recovery valve 41 is provided on gasoline recovery pipe 4, gasoline recovery tank 5 communic...

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Abstract

The invention belongs to the technical field of gasoline sweetening, and particularly relates to a gasoline sweetening device. The gasoline sweetening device comprises a fixed bed reactor, wherein an inlet of the fixed bed reactor is communicated with a gasoline lead-in pipe; the gasoline lead-in pipe is orderly provided with a gasoline pump, a gasoline lead-in valve and a mixer; the mixer is communicated with a non-purified air duct; a one-way valve, an air compressor and a non-purified air storage tank are orderly communicated to the non-purified air duct; a buffer tank is arranged between the one-way valve and the air compressor on the non-purified air duct; and a gasoline backflow display is arranged on the buffer tank. The gasoline sweetening device is simple in structure, reasonable in design, convenient to operate, safe to run, and good in sweetening effect, can reduce resource waste, and saves the production cost.

Description

technical field [0001] The invention belongs to the technical field of gasoline sweetening, and in particular relates to a gasoline sweetening device. Background technique [0002] The rich gas from the oil-gas separator at the top of the fractionation tower contains gasoline components, and C is dissolved in the naphtha. 3 、C 4 even C 2 Components, absorption-stabilization system is to separate rich gas and crude gasoline into dry gas, liquefied gas and stable gasoline with qualified vapor pressure by means of absorption and rectification. The rich gas enters the absorption tower from the bottom after being pressurized by the compressor, cooled and condensed oil is separated; the stable gasoline and naphtha enter the tower top as the absorption liquid, and the C in the rich gas is absorbed into the absorption tower. 3 、C 4 (contains a small amount of C 2 ) and so on to obtain rich absorption oil. The lean gas from the top of the absorption tower contains a small amoun...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C10G27/04
Inventor王学清赵海伟王河清王建清马千鹏
OwnerSHANDONG SHOUGUANG LUQING PETROCHEM