Method for improving quality and reaction period in production of gasoline by using low-carbon hydrocarbons

A gasoline quality and reaction cycle technology, applied in the petroleum industry, liquid hydrocarbon mixture production, etc., can solve the problem of gasoline octane number is not very ideal, achieve the effect of improving gasoline composition distribution, simple and easy method, and enhancing gasoline quality

Active Publication Date: 2013-12-25
SHANDONG DAQI PETROLEUM CHEM DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also research institutions researching synthetic gas to synthesize clean gasoline, but the octane number of gasoline is not very ideal

Method used

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  • Method for improving quality and reaction period in production of gasoline by using low-carbon hydrocarbons

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The raw material and dry gas enter the heating furnace 1 in a ratio of 100:10 and heat it to 350--450°C, then mix and enter the reactor 2 with a pressure of 1.5-2.5Mpa, and a series of cracking or dehydrogenation and oligomerization will occur under the action of the catalyst , isomerization, dehydrogenation and other two-way reversible reactions, the reaction liquid 2 is cooled by the cooler 3 to about 40°C and enters the vapor-liquid separation tank 4 for buffering, and the separated liquid phase is flashed out in the flash tank 5 with a temperature of 40-80°C The dry gas within C4 is mixed with the rich gas at the top of the vapor-liquid separation tank 4 out of the device, and the naphtha at the bottom of the flash tank 5 is sent to the refining equipment for treatment on the distillation range index to obtain an octane number of 98, a sulfur content of 3-5ppm, High-grade clean gasoline with 3% olefin content and 29% aromatic content. The operating cycle is 60 days....

Embodiment 2

[0018] The raw material and dry gas enter the heating furnace 1 in a ratio of 100:6 and are heated to 300-350°C, and then mixed into the reactor 2 with a pressure of 1.0-2.0Mpa. Under the action of the catalyst, a series of cracking or dehydrogenation, oligomerization, Two-way reversible reactions such as isomerization and dehydrogenation, the reaction liquid is cooled by the cooler 3 to about 40°C and enters the vapor-liquid separation tank 4 for buffering, and the separated liquid phase is flashed to the flash tank 5 at a temperature of 40-80°C to flash out C4 The dry gas is mixed with the rich gas at the top of the vapor-liquid separation tank 4 out of the device, and the naphtha at the bottom of the flash tank 5 is sent to the refining equipment for treatment on the distillation range index to obtain an octane number of 97, a sulfur content of 3-6ppm, and an olefin content 5% high-grade clean gasoline with 32% aromatic content. The operating cycle is 58 days.

Embodiment 3

[0020] The raw material and dry gas enter the heating furnace 1 in a ratio of 100:4 and are heated to 250-300°C, and then mixed into the reactor 2 with a pressure of 0.8-1.5Mpa. Under the action of the catalyst, a series of cracking or dehydrogenation, oligomerization, Two-way reversible reactions such as isomerization and dehydrogenation, the reaction liquid is cooled by the cooler 3 to about 40°C and enters the vapor-liquid separation tank 4 for buffering, and the separated liquid phase is flashed to the flash tank 5 at a temperature of 40-80°C to flash out C4 The dry gas is mixed with the rich gas at the top of the vapor-liquid separation tank 4 out of the device, and the naphtha at the bottom of the flash tank 5 is sent to the refining equipment for treatment on the distillation range index to obtain an octane number of 96, a sulfur content of 3-8ppm, and an olefin content 4-8%, high-grade clean gasoline with 35% aromatic content. 55 days running cycle

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Abstract

The invention provides a method for improving quality and reaction period in the production of gasoline by using low-carbon hydrocarbons, which belongs to the technical field of low-carbon hydrocarbon aromatization. The method adopts a reaction equipment system, and is characterized in that: the equipment system consists of a heating furnace, a reactor, a cooler, a gas-liquid separation tank and a flash drum, which are connected in turn. A low-carbon hydrocarbon material and a dry gas are mixed and introduced into the heating furnace to be pre-heated to 250 to 450 DEG C, the heated mixture is transferred to a reactor under a pressure of 0.8 to 205MPa, the reaction solution is cooled by a cooler to 35 to 45 DEG C and then transferred to the flash drum for flashing to remove dry gases having less than 4 carbon atoms, the dry gases are mixed with the rich gas on the top of an enterprise separation tank, the mixed gases are exhausted from the device, and the crude gasoline at the bottom of the flash drum is refined to produce high-grade gasoline. The method of the invention is simple and easy to implement; the equipment flow is short; the gasoline component distribution is improved; the quality of the gasoline is improved; the operation is safe and stable; the period is doubled; and the effect is obvious.

Description

technical field [0001] The invention belongs to the technical field of low-carbon hydrocarbon aromatization gasoline, and in particular relates to a method for improving the quality and reaction cycle of low-carbon hydrocarbon-made gasoline. Background technique [0002] In recent years, the international community has put forward environmental protection opinions of "low carbon" and "emission reduction". China has formulated emission standards for automobiles implemented in stages. However, the quality of fuel used in automobiles in my country is very poor, which has seriously hindered the development of the entire Chinese automobile industry. And the speed of connecting with the world. At present, China's gasoline mainly comes from catalytic cracking units, and people's attention to improving gasoline quality is mostly focused on the improvement of catalytic cracking technology. For example, Sinopec Luoyang Petrochemical Engineering Company developed the FDFCC-Ⅲ process to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G50/00
Inventor 宋金富王振武郭洪臣刘新民
Owner SHANDONG DAQI PETROLEUM CHEM DESIGN
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