Solvent refining method and solvent refining equipment for producing environment-friendly rubber filling oil

An environmentally friendly rubber and solvent refining technology, which is applied in the petrochemical field, can solve the problems of not being able to meet the performance requirements of environmentally friendly rubber oil, the unsatisfactory performance, and the low aromatic carbon content of refined oil, so as to improve the refining effect, improve precision and efficiency. Effect

Active Publication Date: 2012-09-19
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Using the existing solvent refining technology, if the polycyclic aromatic hydrocarbon (PCA) content and the total content of 8 kinds of harmful aromatic compounds in the refined oil meet the requirements of the EU Environmental Protection Directive 2005 / 69 / EC environmental protection indicators, the refined oil aromatic carbon Low content, can not meet the requirements of the tire industry for the performance of environmentally friendly rubber oil; if the aromatic carbon content of the refined oil meets the requirements of the tire industry for the performance of environmentally friendly rubber oil, the polycyclic aromatic hydrocarbon (PCA) content of the refined oil and 8 The total content of a variety of harmful aromatic compounds cannot meet the requirements of the EU environmental protection directive 2005 / 69 / EC environmental protection indicators

Method used

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  • Solvent refining method and solvent refining equipment for producing environment-friendly rubber filling oil
  • Solvent refining method and solvent refining equipment for producing environment-friendly rubber filling oil
  • Solvent refining method and solvent refining equipment for producing environment-friendly rubber filling oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) The first solvent extraction and separation process

[0037] The refining conditions of the extraction tower are as follows: the temperature at the top of the tower is 70°C, the temperature at the bottom of the tower is 40°C, and the mass ratio of solvent furfural to raw oil naphthenic minus third-line hydrodeacidification oil is 1.5:1.0. A part of the raffinate obtained from the top of the extraction tower is returned to the extraction tower through a pipeline, and the specific conditions are shown in (2) below.

[0038] (2) solvent refining process of the present invention

[0039] Naphthenic minus three-line hydrodeacidified oil is used as the raw material oil. See attached table 1 for its properties. The refining conditions are: the temperature at the top of the tower is 70°C, the temperature at the bottom of the tower is 40°C, and the mass ratio of the main solvent furfural to the raw oil is 1.5 : 1.0, the mass ratio of secondary solvent furfural and feedstock...

Embodiment 2

[0041] (1) The first solvent extraction and separation process

[0042] The refining conditions of the extraction tower are as follows: the temperature at the top of the tower is 100°C, the temperature at the bottom of the tower is 70°C, and the mass ratio of the solvent dimethyl sulfoxide to the raw oil naphthenic minus fourth-line distillate is 3.5:1.0. A part of the raffinate obtained from the bottom of the raffinate stripping tower 4 is returned to the stripping tower through pipelines, and the specific conditions are shown in (2) below.

[0043] (2) solvent refining process of the present invention

[0044] The naphthenic minus four-line distillate oil is used as the raw material oil, and its properties are shown in Attached Table 1. The refining conditions are: the temperature at the top of the tower is 100°C, the temperature at the bottom of the tower is 70°C, and the mass ratio of the main solvent dimethyl sulfoxide to the raw oil is is 3.5: 1.0; the mass ratio of sec...

Embodiment 3

[0046] (1) The first solvent extraction and separation process

[0047] The refining conditions of the extraction tower are as follows: the temperature at the top of the tower is 55°C, the temperature at the bottom of the tower is 40°C, and the mass ratio of solvent furfural to raw oil lubricating oil solvent extraction oil is 2.5:1.0. A part of the raffinate obtained from the bottom of the raffinate stripping tower 4 is returned to the stripping tower through pipelines, and the specific conditions are shown in (2) below.

[0048] (2) solvent refining process of the present invention

[0049] The lubricating oil solvent extraction oil is used as the raw material oil, the properties are shown in attached table 3, the tower top temperature of the extraction tower is 55°C, the tower bottom temperature is 40°C, the mass ratio of the main solvent furfural to the raw material oil is 2.5:1.0; the secondary solvent The mass ratio of furfural and raw oil is 0.4: 1; The mass ratio of t...

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Abstract

The invention belongs to the technical field of petrochemical engineering and discloses a method and equipment for producing environment-friendly rubber filling oil. The method includes: using solvent high in selectivity and appropriate in dissolving capacity as main solvent and auxiliary solvent; performing solvent refining in a counter-current extraction tower, enabling raw oil to enter the extraction tower from the lower portion thereof, enabling the main solvent to enter the extraction tower from the upper portion thereof, and enabling the auxiliary solvent to enter the extraction tower from a raw oil inlet to the lower portion of a main solvent inlet of the extraction tower; enabling part of raffinate oil or raffinate liquid to enter the extraction tower from the raw oil inlet to the lower portion of the main solvent inlet, refining under the combined action of the main solvent and the auxiliary solvent, subjecting extract at the bottom of the extraction tower to evaporation and steam stripping to recover solvent so that solvent extract oil is obtained, and subjecting raffinate liquid at the tower top to steam stripping to recover solvent so that raffinate oil, namely the environment-friendly rubber filling oil is obtained. By the aid of the method, lubricating oil distillate oil, hydrofined oil of the lubricating oil distillate oil or lubricating oil solvent extract oil can be used as raw oil to produce the environment-friendly rubber filling oil meeting requirements of environmental protection directive of European Union.

Description

technical field [0001] The invention belongs to the field of petrochemical technology, in particular to a production method and equipment for producing environmentally friendly rubber filler oil for synthetic rubber and tires. Background technique [0002] In the production and processing of rubber products such as tires, in order to improve the processing performance of the rubber compound, it is usually necessary to add a certain amount of rubber filler oil. my country is a big country in tire production, and its exports have grown rapidly in recent years. However, due to the fact that there is no environmental protection standard for tires in China, some tire manufacturers choose non-environmental protection rubber filling oil, which not only affects the environment, but also affects tires due to the failure of environmental protection indicators. Export, but the use of imported environmentally friendly rubber filler oil is expensive, and tire companies cannot bear it. Ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/04C08K5/01C08L21/00
Inventor 刘海澄黄鹤孙井侠相养冬王宏德张戬年成春张华李荣峰赵斌张东明
Owner PETROCHINA CO LTD
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