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A kind of benzyl benzoate bottom modified coal tar pitch and preparation method thereof

A technology of benzyl benzoate and coal tar pitch, applied in building components, building insulation materials, buildings, etc., can solve the problems of finding no treatment methods, environmental pollution, etc., to achieve environmental protection, reduce costs, and improve low temperature resistance Effect

Active Publication Date: 2019-06-28
HUBEI GREENHOME MATERIALS TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no good way to dispose of benzyl benzoate waste, and some manufacturers even secretly burn or bury it, causing great pollution to the environment. Therefore, how to deal with benzyl benzoate waste has become a top priority

Method used

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  • A kind of benzyl benzoate bottom modified coal tar pitch and preparation method thereof

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Effect test

Embodiment 1

[0024] A kind of benzyl benzoate waste modified coal tar pitch, is characterized in that: this modified coal tar pitch is made of the raw material of following parts by weight: 100 parts of low-temperature coal tar pitch, 40 parts of benzyl benzoate waste, 30 parts of toluene, B 10 parts of diol, 3 parts of sodium dodecylbenzenesulfonate, 3 parts of 2,6-di-tert-butylcresol, and 3 parts of zinc stannate.

[0025] The preparation method of benzyl benzoate leftovers modified coal tar pitch comprises following processing steps:

[0026] (1) First put the coal tar pitch into the reaction kettle with reflux device, heat it to 60-110°C, then add toluene and ethylene glycol into the kettle, stir for 20-30min, and the stirring speed is 300-500r / min;

[0027] (2) Then add benzyl benzoate waste, sodium dodecylbenzenesulfonate, 2,6-di-tert-butylcresol and zinc stannate to the reaction kettle in sequence, stir for 1-2h, and the stirring speed is 300-500r / min , to obtain the modified coal ...

Embodiment 2

[0030] A kind of benzyl benzoate waste modified coal tar pitch is characterized in that: the modified coal tar pitch is made of the following raw materials in parts by weight: 50 parts of low-temperature coal tar pitch, 50 parts of medium temperature coal tar pitch, and 50 parts of benzyl benzoate waste , 30 parts of toluene, 12 parts of ethylene glycol, 5 parts of sodium dodecylbenzenesulfonate, 2 parts of 2,6-di-tert-butylcresol, and 3 parts of zinc stannate.

[0031] The preparation method of benzyl benzoate leftovers modified coal tar pitch comprises following processing steps:

[0032] (1) First put the coal tar pitch into the reaction kettle with reflux device, heat it to 60-110°C, then add toluene and ethylene glycol into the kettle, stir for 20-30min, and the stirring speed is 300-500r / min;

[0033] (2) Then add benzyl benzoate waste, sodium dodecylbenzenesulfonate, 2,6-di-tert-butylcresol and zinc stannate to the reaction kettle in sequence, stir for 1-2h, and the sti...

Embodiment 3

[0036] A kind of benzyl benzoate waste modified coal tar pitch, it is characterized in that: this modified coal tar pitch is made of the raw material of following parts by weight: 90 parts of medium temperature coal tar pitch, 60 parts of benzyl benzoate waste, 25 parts of toluene, B 15 parts of diol, 5 parts of sodium dodecylbenzenesulfonate, 2 parts of 2,6-di-tert-butylcresol, and 2 parts of zinc stannate.

[0037] The preparation method of benzyl benzoate leftovers modified coal tar pitch comprises following processing steps:

[0038] (1) First put the coal tar pitch into the reaction kettle with reflux device, heat it to 75-110°C, then add toluene and ethylene glycol into the kettle, stir for 20-30min, and the stirring speed is 300-500r / min;

[0039] (2) Then add benzyl benzoate waste, sodium dodecylbenzenesulfonate, 2,6-di-tert-butylcresol and zinc stannate to the reaction kettle in sequence, stir for 1-2h, and the stirring speed is 300-500r / min , to obtain the modified ...

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Abstract

The invention discloses a benzyl benzoate waste modified coal tar pitch. The modified coal tar pitch is made from the following raw materials in parts by weight: 60-100 parts of coal tar pitch, 40-80 parts of benzyl benzoate residue, 15-30 parts of toluene, 10-15 parts of ethylene glycol, dodecyl 2‑5 parts of sodium benzenesulfonate, 1‑3 parts of 2,6‑di-tert-butylcresol, and 1‑3 parts of zinc stannate. The present invention can significantly reduce the content of polycyclic aromatic hydrocarbons 3,4-benzopyrene (Bap) in coal tar pitch, has simple process, low equipment requirements, can produce modified coal pitch on a large scale, and the finished coal tar pitch after modification can reach National specification requirements.

Description

technical field [0001] The invention belongs to the technical field of resource recycling and asphalt materials, and in particular relates to a modified coal tar pitch by benzyl benzoate leftovers. Background technique [0002] Coal tar pitch, also known as coal tar pitch, is the residue after extraction of light oil, phenol oil, naphthalene oil, washing oil and anthracene oil from coal tar, accounting for more than 50% of the total mass of coal tar. In recent years, with the increase of domestic coal tar production and the development of coal tar deep processing industry, my country's coal tar pitch production has increased year by year. At present, domestic coal tar pitch is mainly used as carbon material forming binder, heavy oil instead of fuel oil, etc. The use is very single, and the pollution is serious, which seriously restricts the development of coal tar deep processing industry. Therefore, expanding the use of coal tar pitch has important practical significance f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08K13/02C08K5/101C08K5/07C08K5/09C08K5/053C08K3/24C08K5/13C08K5/42
CPCC08K3/24C08K5/053C08K5/07C08K5/09C08K5/101C08K5/13C08K5/42C08K13/02C08L95/00
Inventor 刘芳芳杨华肖华青黄圣
Owner HUBEI GREENHOME MATERIALS TECH INC
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