Petroleum fraction alkyl sulfur transferring method

A technology for petroleum distillate and alkylation sulfur, which is applied in the petroleum industry, refining hydrocarbon oil, refining with solid acid, etc., and can solve problems such as short lifespan

Inactive Publication Date: 2005-04-06
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0008] The method adopts a fluidized bed and other catalyst-movable reactors for the alkylation reaction, so that the catalyst can be continuously or intermittently regenerated, overcomes the short life of the alkylation catalyst, and can maintain the activity of the alkylation catalyst for a long time; Since the alkylating agent is added, it minimizes the loss of product volume and product octane number while removing thiophene impurity sulfur in the raw material

Method used

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  • Petroleum fraction alkyl sulfur transferring method

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Embodiment Construction

[0010] The method provided by the invention is specifically implemented as follows: the alkylating agent and the petroleum fraction raw material are premixed in a weight percentage of 0.1 to 99.9, preferably 5 to 45, and then enter the catalyst movable reactor, and the sulfide and alkane in the petroleum fraction are The alkylating agent is in contact with the powdered alkylation catalyst at a temperature of 35°C to 400°C, preferably 90°C to 280°C, a pressure of 0.001MPa to 8MPa, preferably 0.2MPa to 4MPa, and a space velocity of 1h -1 ~4h -1 The alkylation reaction is carried out under certain conditions. At the same time, the alkylating agent can be superimposed to form a component with a higher octane number. The sulfide reacts with the alkylating agent to form a sulfide with a higher boiling point. The reaction product enters the distillation tower Distillation is carried out, the low-sulfur light petroleum fraction is distilled from the top of the tower, and the heavy pet...

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Abstract

The present invention is petroleum fraction alkyl sulfur transferring method. Heated petroleum fraction and alkylating agent are made to enter movable catalyst reactor, so that the sulfide in petroleum fraction and the alkylating agent produce alkylation reaction under the action of powdered alkylating catalyst. The reaction products are separated to obtain low-sulfur light petroleum fraction and high--sulfur heavy petroleum fraction, and the deactivated catalyst from the reactor is regenerated in regenerator and returned to the reactor for circular use. The said process can regenerate catalyst continuously or intermittently to maintain the catalytic activity of the alkylating catalyst for long period and has lowest loss of produce in amount and octane number while eliminating the thiofuran sulfur impurity in material.

Description

technical field [0001] The present invention relates to a process for the refining of hydrocarbon oils in the absence of hydrogen. More specifically, a method of transferring sulfur compounds in petroleum fractions by alkylation. Background technique [0002] It is an indisputable fact that the environmental protection laws of various countries in the world have increasingly strict requirements on petroleum products. How to meet the requirements of relevant laws and produce qualified environmentally friendly green products has become an urgent task. With the strengthening of environmental awareness around the world, governments of various countries have enacted stricter and stricter laws to ensure sustainable development. However, there are many problems in many refining processes at present. Taking catalytic cracking gasoline as an example, the common hydrorefining process cannot be applied to the refining of catalytic cracking gasoline because ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G17/095C10G29/20
Inventor 渠红亮张凯姜蕾毛俊义王少兵张占柱
Owner CHINA PETROLEUM & CHEM CORP
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