Hydrogen Peroxide Plant (Fixed Bed Process)

Hydrogen Peroxide Plant

Hydrogen Peroxide Plant (Fixed Bed Process)

Agent Technology and Plants

Technology Introduction:

There are several methods for hydrogen peroxide production, among them the AO(auto-oxidation) process is the most prevailing one. In this process, 2-alkyl anthraquinone is mixed with organic solvent to make up the working solution, which is hydrogenated in presence of catalyst, and the resulting is oxidized by air (or oxygen) in counter-current way before being extracted, regenrated, purified and enriched to get commercial hydrogen peroxideproduct. Depending upon the different reactor type in the hydrogenation unit, AO process is further divided into Fixed Bed Reactor Process and Fluidized Bed Reactor Process. SL Tec provides both processes. The Fixed Bed Reactor Process SL TEC provides is the most advanced technology in China. It employs heavy aromatics-TBU-TOP tertiary solvent in the working solution and alumina-supported Pd catalyst with high activity.

Technical Features:

Compared to the other Fixed Bed Ractor Process prevailing in China, the technology offered by SL TEC has advantages as below:

1. The working solution has higher solubility of anthrahydroquinone and anthraquinone, and can ensure the hydrogen peroxide plant's normal running with the process productivity as the WS (working solution) capacity over 9.5g/L.

2. The catalyst has higher activity and better selectivity, with the unit production capability of 6.5 kg/ kg of 100% hydrogen peroxide.

3. The working solution has higher partition coeficient, which makes it easier to produce high concentration hydrogen peroxide in the extraction column, meanwhile the raffinate phase is lessened to increase the operation safety.

4. With this new kind working solution, the oxidation time under same conditions is increased to more than 97%.

5. Due to the obvious lower consumption rate, the production cost of per ton of industrial grade product can be saved by 10-20%.

6. After revamping, the capacity of the plant using the traditional process can be increased by 30-50%, which saves the investment and especially favorable for the old plant revamping.

Performance:

1. Product Specification

Item	Index
	Superior Grade	First Grade	Acceptable Grade
Hydrogen Peroxide Content／％  ≥	50.0	50.0	50.0
Free Acid (as per sulfuric acid )／％   ≤	0.04	0.06	0.12
Non-volatile Matter Content／％  ≤	0.08	0.12	0.24
Stability／％， ≥	97.0	97.0	97.0
Appearance	Colorless transparent

2. Specific Consumption

2.1 Specific Consumption based on per ton of 27.5% hydrogen peroxide

S/N	Name	Unit	Unit Consumption	Remark
1	H2	Nm3	196
2	Air	Nm3	1250
3	Nitrogen	Nm3	3.5
4	EAQ	kg	0.40
5	Heavy aromatic	kg	3.5	Expander set + carbon adsorption set
6	TOP	kg	0.10
7	TBU	kg	0.20
8	Potassium Carbonate	kg	0.85
9	Activated Alumina	kg	4.5
10	Phosphoric Acid	kg	1.0
11	Stabilizer	kg	0.05
12	Pure Water	t	0.90	For the main process production use
13	Circulating Cooling Water	t	170	Δt＝5℃
14	Steam	t	0.1	0.2MPa
15	Electricity	kWh	185

2.2 Specific Consumption based on per ton of 50% hydrogen peroxide

undefined S/N	undefined Name	undefined Unit	undefined Unit Consumption	undefined Remark
undefined 1	undefined Hydrogen peroxide	undefined t	undefined 1.87	undefined 27.5%
undefined 2	undefined Steam	undefined t	undefined 1.0	undefined 0.8MPa
undefined 3	undefined Circulating water	undefined t	undefined 100	undefined Δt＝5℃
undefined 4	undefined Complex stabilizer	undefined kg	undefined 0.1	undefined Chemical reagents
undefined 5	undefined electricity	undefined kWh	undefined 30	undefined