Process for joint production of aromatic solvent, stone oil naphthalin and durene line products with C10 heavy aromatic raw material

A technology of mesitylene and aromatic hydrocarbon solvent is applied in the field of comprehensive utilization of C10 heavy aromatics, which can solve the problems of high product price, difficult to control production cost, low resource utilization rate, etc., and achieve the effect of saving resources.

Active Publication Date: 2008-12-10
常熟华虞环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Undoubtedly, if using C 10 If heavy aromatics raw materials are used to produce individual products, then, on the one hand, it will cause low resource utilization, such as making C 10 The active ingredients suitable for the application of fine chemical products with high added value in the heavy aromatics raw materials c

Method used

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  • Process for joint production of aromatic solvent, stone oil naphthalin and durene line products with C10 heavy aromatic raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Please refer to the attached drawings, A, B, C, D and E marked in the drawings represent the five steps or processes of the method of the present invention.

[0025] A) C 10 Separation of heavy aromatics feedstock:

[0026] To be purchased from Sinopec Yangzi Petrochemical Co., Ltd. in Liuhe District, Nanjing City, Jiangsu Province, China 10 The heavy aromatic hydrocarbon raw material is introduced into the first rectification column 2 through the first pipeline 1 from the middle of the first rectification column 2 with a diameter of 1.6 m, a column height of 35 m and a plate number of 130 for rectification. The technological control condition of tower 2, namely rectification condition is: tower top temperature 115 ℃, tower top absolute pressure is 11kPa, reflux ratio 1: 11, the heat transfer oil temperature of first rectifying tower tower bottom reboiler 3 is 285 ℃, The top distillate of the first rectifying tower is condensed by the first tower top condenser 4 and t...

Embodiment 2

[0038] Please refer to the attached drawings, A, B, C, D and E marked in the drawings represent the five steps or processes of the method of the present invention.

[0039] Only C purchased from Sinopec Yangzi Petrochemical Co., Ltd. in Liuhe District, Nanjing City, Jiangsu Province, China. 10 The content of mesitylene of the heavy aromatic raw material is changed to 6.8%, and the process control conditions of the first rectifying tower 2, namely the rectification conditions, are changed to: the temperature at the top of the tower is 110.5°C, the absolute pressure at the top of the tower is 14.5kPa, the reflux ratio is 1:9, The temperature of the heat-conducting oil of the reboiler 3 at the bottom of the first rectifying tower is changed to 270 ° C; The temperature of the heat transfer oil of the reboiler 11 at the bottom of the second rectifying tower is changed to 279 °C; The temperature of the heat transfer oil of the bottom reboiler 19 of the third rectifying tower is cha...

Embodiment 3

[0047] Please refer to the attached drawings, A, B, C, D and E marked in the drawings represent the five steps or processes of the method of the present invention.

[0048] Only C purchased from Sinopec Yangzi Petrochemical Co., Ltd. in Liuhe District, Nanjing City, Jiangsu Province, China. 10 The content of mesitylene of the heavy aromatics raw material is changed to 6.5%, and the process control conditions of the first rectifying tower 2, namely the rectification conditions, are changed to: the temperature at the top of the tower is 127°C, the absolute pressure at the top of the tower is 14kPa, the reflux ratio is 1:10, and the The temperature of the heat transfer oil of the reboiler 3 at the bottom of the first rectifying tower is changed to 290 ° C; The temperature of the heat transfer oil of the reboiler 11 at the bottom of the rectifying tower is changed to 295 °C; The temperature of the heat transfer oil of the reboiler 19 at the bottom of the distillation tower is cha...

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Abstract

The present invention discloses a method for jointly preparing a series of products of an aromatic solvent, petronaphthalene and durene from a C10 heavy aromatics material, belonging to the C10 heavy aromatics complex utilization technical field. The method comprises the following steps of: A) separating the C10 heavy aromatics material; B)refrigerating and crystallizing an enrichment solution of durene; C)refrigerating and crystallizing an enrichment solution of naphthalene; D) gas phase catalytically oxidizing durene; and E) preparing technical grade PMA, technical grade PMDA and electronic grade PMDA from a crude product. The method has the advantages that the method can carry out joint production to obtain the series of products of aromatic solvent, petronaphthalene and durene by the C10 heavy aromatics material so that the C10 heavy aromatics material obtains sufficient utilization, thereby contributing to resource economizing.

Description

technical field [0001] The present invention belongs to C 10 The technical field of comprehensive utilization of heavy aromatic hydrocarbons, in particular to a kind of by C 10 The invention discloses a method for co-producing series products of aromatic hydrocarbon solvent, petroleum naphthalene and mesitylene from heavy aromatic hydrocarbon raw materials. Background technique [0002] C 10 The heavy aromatics mainly come from the wide-cut catalytic reforming unit of the polyester raw material plant, and a small part comes from other production units such as ethylene tar by-produced from the ethylene unit. C 10 The components of heavy aromatics are quite complex. Chromatographic analysis shows that there are more than 100 components, and the content of each component is also very different. The minimum is only a few tenths of a percent, and the most is 3% fifteen or so. In particular, there are isomers of compounds of certain components, such as α-methylnaphthalene and...

Claims

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Application Information

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IPC IPC(8): C07C15/24C07C15/02C07C7/04C07C7/14
Inventor 苏仁球陈丽萍李凤娟陈绮峰苏惠忠王玉山赵海峰刘忠云
Owner 常熟华虞环境科技有限公司
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