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O-Dihydroxybenzene Plant buy in Wuhan
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O-Dihydroxybenzene Plant

O-Dihydroxybenzene Plant

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Price:
6000 CNY
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China, Wuhan
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Technical characteristics
  • Country of manufactureChina
Description

O-Dihydroxybenzene Plant

Proprietary Technology and Plants

Technology Introduction:

There are over 10 methods for hydroquinone production, and among them the prevailings are Aniline Oxidation Process, p-DIPB Excess Oxidation Process and Phenol Hydroxylation Process. Their comparisons are shown in the following table. SL TECH's technology is based on Phenol Hydroxylation Process, in which phenol feedstock reacts with hydrogen peroxide in presence of catalyst to yield o-dihyoxybenzene and p-dihyoxybenzene. After removing water, high boiling point substances, phenol and separating out o-dihydroxybenze, crude p-dihyoxybenze is obtained and then charged for dissolving, discoloring, recrystallization before getting hydroquinone product.

Technical Features:

 S/N

Production Process

Technical Advantages/Disadvantages

 

Aniline Oxidation Process

easy operation, but high consumption and low yield

 

p-DIPB Excess  Oxidation Process

Less side products, high conversion yield, but difficult in selecting the catalyst system

 

Phenol Hydroxylation Process

Low production cost, high yield, less pollution but with complicated separation

Performance:

Product Specification

S/N

Item

Index

Superior Grade

Acceptable Grade

1

p-dihyoxybenzene, wt%

99.0-100.5

2

o-dihyoxybenzene, wt%, ≦

0.05

3

finished melting point, oC, ≦

171-175

4

Burning residue, wt%, ≦

0.10

0.30

5

Heavy metal(as per Pb), wt5, ≦

0.002

-

6

Iron(as per Fe), wt%, ≦

0.002

-

7

Solubility Test

Passed test

-

Specific Consumption

S/N

Item

Consumption Rate

1

Phenol (mt/mt @ per ton of 99.0% p-dihyoxybenzene)

1.07

2

70% Hydrogen Peroxide 


   (mt/mt @ per ton of 99.0% p-dihyoxybenzene)

 

0.634

3

Catalyst (kg / kg @ per ton of 99.0% p-dihyoxybenzene)

15

4

3.8MPa Steam ((mt/mt @ per ton of 99.0% p-dihyoxybenzene)

16

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