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Production method of high-quality clean fuel

A clean fuel and production method technology, which is applied in the petroleum industry, hydrotreating process, and hydrocarbon oil treatment, can solve the problems of high olefin content and sulfur content, low aromatic content, octane number loss, etc., and achieve yield and The effect of high octane number, simple process and low energy consumption

Inactive Publication Date: 2016-12-07
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current situation of gasoline production in my country is that nearly 80% of gasoline comes from catalytic cracking, and its olefin content and sulfur content are high (>95% of sulfur in finished gasoline comes from catalytic cracking gasoline), while the content of aromatics is low (~20%), which is To meet the requirements of National IV or National V standards, further hydrodesulfurization is required to reduce the content of sulfur and olefins in gasoline, and the biggest problem faced by this process is the loss of octane number generated during the process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Adopt the method provided by the invention, take catalytic cracking dry gas (composition see Table 1) and petroleum toluene as raw material. The DL0812 catalyst is filled in the reactor in equal proportions in 4 stages.

[0019] Table 1 Composition of catalytic cracking dry gas

[0020]

H 2

O 2

N 2

COx

CH 4

C 2 h 4

C 2 h 6

C 3 h 6

C 3 h 8

C 4

Others

vol%

15.21

0.43

22.37

2.98

25.93

19.52

11.62

1.29

0.43

0.12

0.1

[0021] FCC dry gas is divided into 4 paths according to the loading ratio of catalysts at all levels in the reactor. After heat exchange, it enters the inlets of catalyst beds at each level. Among them, the raw material of FCC dry gas at the first stage reaction inlet is mixed with toluene (including fresh toluene and recycled toluene) After heating, it enters the reactor and reacts on the catalyst. The reaction conditions are as follows: the...

Embodiment 2

[0024] Adopt the method provided by the invention, with enriched toluene light aromatics (toluene content~75wt%, all the other are benzene and aliphatic hydrocarbon), after ether C4 (olefin content~47wt%) and oxygen-containing compound (mass ratio is: methyl alcohol: two Methyl ether: ethanol: isobutanol=4:3:2:1) is raw material, wherein the mass ratio of carbon four after ether and oxygen-containing compound is 1:4. The DL0822 catalyst is loaded in 4 different stages in the reactor, and the catalyst loading ratio of each stage of the reactor is 15:20:30:35.

[0025] The C4 after the ether enters the inlet of the catalyst bed of the first stage after heat exchange, and enters the oxygen-containing compound raw material in the second to fourth stages. Among them, the C4 raw material at the entrance of the first stage reaction and the toluene raw material (including fresh toluene and recycled toluene) are mixed and heated and then enter the reactor, where alkylation, dehydration...

Embodiment 3

[0027] Using the method provided by the present invention, using propylene-rich gas (see Table 2 for its composition) and petroleum toluene as raw materials, the DL0805 catalyst is loaded in five equal stages in the reactor.

[0028] The propylene-rich gas is divided into 5 paths according to the catalyst loading ratio of each level of the reactor, and then enters the catalyst bed inlets of each level after heat exchange. Enter the reactor and react on the catalyst. The reaction conditions are as follows: the inlet temperature of the reaction bed in each stage is 170°C, the pressure is 3.0MPa, the molar ratio of benzene to olefin is 2.0, and the space velocity of olefin is 1.0h -1 . The conversion rate of propylene and total olefins is >99%, and the olefins generate C 5 + Selectivity >99%. After the product is separated, the toluene is recycled back to the alkylation reactor, and the hydrocarbonated liquid is fractionated to obtain high-octane gasoline and a small amount of...

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PUM

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Abstract

The invention provides a production method of high-quality high-octane-rating clean gasoline for automobiles. The production method is characterized by comprising the following steps of using toluene and olefin-enriched low-carbon hydrocarbon and / or coal-based, bio-based oxygen-containing compounds as raw materials, dividing the olefin-enriched low-carbon hydrocarbon and / or the oxygen-containing compounds into multi-paths, enabling the raw materials to enter reaction bed layers of a multistage fixed bed reactor to be mixed with the toluene which enters from the top of the reactor, and performing reactions of alkylation, dehydration, polymerization, isomerization, aromatization, hydrogen transfer and the like in the presence of catalysts; and separating reaction products so as to obtain hydrocarbon liquid phase components and hydrocarbon gas phase components, wherein the liquid phase components are subjected to fractional distillation, so that arene-enriched high-octane-rating gasoline components and few light diesel oil components are obtained, and the gas phase components are separated into dry gas and alkane liquefied gas for the automobiles. The production method has the advantages of being simple in flows, low in energy consumption, high in flexibility of operation schemes, high in yield and octane rating of gasoline products, and free of sulfur and nitrogen.

Description

technical field [0001] The invention belongs to the technical field of clean vehicle fuel production, and in particular relates to a method and application for producing high-quality high-octane clean gasoline for vehicles from toluene and olefin-rich low-carbon hydrocarbons or coal-based and bio-based oxygen-containing compounds . Background technique [0002] With the rapid development of my country's economy, the demand for oil resources is increasing. In 2013, my country's oil imports exceeded 280 million tons, and its dependence on foreign countries exceeded 55%. The shortage of oil resources and low effective utilization have become the bottleneck restricting the sustainable development of my country's economy and society. In the next few decades, the most in short supply of petroleum downstream products will be vehicle transportation fuels, mainly gasoline and diesel (Contemporary Petroleum and Petrochemical, Vol. 17, No. 11, 2009, Countermeasures for the sustainable...

Claims

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Application Information

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IPC IPC(8): C10G67/02
Inventor 陈福存朱向学李秀杰谢素娟王玉忠安杰曾蓬黄声骏徐龙伢
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI