Technology Introduction:

 is produced by the alkylation of phenol by reacting with olefin, aliphatic alcohol, or chloro-hydrocarbon. They are important intermediates for fine chemical synthesis, widely applied in the manufacture of surface active agent, anti-oxidation agent, paint and coating. SL TEC offers the technology of phenol's alkylation into o-cresol, and cresol's alkylation into 2-t-butyl-p-cresol, 6-t-butyl-m-cresol, 2,6-di-t-butyl-p-cresol,  and etc.

Also SL TEC supplies the technology of producing m-cresol/p-cresol by the isomerization of o-cresol.

Technical Features:

He+reinafter 2,3,6-TMP production technology will be introduced as an example. 2,3,6-TMP is mainly used in pharmaceutical industry to synthesize vitamin E; it is the monomer for the production of thermoresitant PPE engineering plastic and the feedstock for plastic alloy production; also 2,3,6-TMP is the necessary intermediates for the manufacture of some pesticides, disinfectants and etc.

Compared to the process starting from phenol and methanol, SL Tec offers the one-step process starting from m-cresol and methanol under gas phase catalysis. the catalyst is based on Fe2O3, with the conversion of m-cresol reaching 98% and the yield reaching 98%.

Performance:

1. Product Specification of 2,3,6-TMP

 

S/N	Item	index
1	Appearance	Colorless or light yellow solid
2	Purity, % wt	99.5
3	Moisture, ≤% wt	0.3
4	Density(20/4℃) , kg/L	169
5	Melting Point, ℃	62.5~64.0

 

 

2. Specific Consumption

S/N	Item	Specification	Unit	Consumption Rate
1	RM & Auxiliaries
1.1	M-cresol	≥99.5%	Kg/mt of 2,3,6-TMP	840
1.2	Methanol	First Grade	Kg/mt of 2,3,6-TMP	980
1.3	Catalyst		Kg/mt of 2,3,6-TMP	2.86
2	Fuel and Power
2.1	Industrial Water		M3/mt of 2,3,6-TMP	3.2
2.2	Circulating Water	Delta t= 8oC	Mt/mt of 2,3,6-TMP	400
2.3	Electricity	380/220V,50HZ	Kwh/mt of 2,3,6-TMP	720
2.4	Steam	Low pressure, saturated steam	Mt/mt of 2,3,6-TMP	2.88
2.5	Instrumental Air	0.7Mpa, dew point -25℃	Nm3/mt of 2,3,6-TMP	3
2.6	Nitrogen	0.7MPa	Nm3/mt of 2,3,6-TMP	3