System for improving quality of industrial-grade hydrogen peroxide product

Abstract

Industrial-grade hydrogen peroxide is purified through heavy aromatics, demulsification is conducted through the coalescer, the hydrogen peroxide is further clarified and transparent, then the hydrogen peroxide is cooled through a low-temperature water cooling method, the solubility of organic matter is reduced, and finally the industrial-grade hydrogen peroxide is conveyed into the filter through the pump to be filtered and then loaded for sale. The method can fully improve the quality of the industrial-grade hydrogen peroxide product, effectively reduce the content of organic matters in hydrogen peroxide, avoid the problem that the organic matters float on the surface of the hydrogen peroxide product due to temperature reduction in the transportation process, and greatly improve the quality of the hydrogen peroxide product.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of chemical industry relates to the production of hydrogen peroxide, concretely is a kind of system for improving the quality of industrial grade hydrogen peroxide product. BACKGROUND

[0002] At present, the vast majority of domestic hydrogen peroxide production device is using anthraquinone fixed bed process, using 2-ethylanthraquinone as carrier, C9~C10 heavy aromatic hydrocarbon, trioctyl phosphate, ortho-methylcyclohexyl acetate, four kinds of butyl urea are used as solvent to prepare working fluid, hydrogenation, oxidation, extraction, purification and other processes are obtained Industrial grade hydrogen peroxide product.

[0003] In the production process of hydrogen peroxide product, a large amount of organic chemical raw materials are used, so that the hydrogen peroxide product inevitably carries part of the organic matter, which can easily increase the turbidity of the product under certain conditions, and the product will also be precipitated and floated on the product after temperature reduction, thereby reducing the quality of hydrogen peroxide product. UTILITY MODEL CONTENTS

[0004] In view of the above problems, the utility model provides a kind of system for improving the quality of industrial grade hydrogen peroxide product, including extraction tower, extraction tower is connected to purification tower, purification tower is connected to coalescer, coalescer is connected to cooler, cooler is connected to filter.

[0005] The cooler and filter are connected in sequence by tank and delivery pump.

[0006] The bottom of the extraction tower is provided with a flow control valve, and the extraction tower is connected to the upper part of the purification tower through the flow control valve.

[0007] The bottom of the purification tower is provided with a pipeline connected to the coalescer, and the lower part of the purification tower is provided with an aromatic hydrocarbon inlet.

[0008] The top of the coalescer is provided with a tail gas outlet, and the side is provided with a hydrogen peroxide outlet connected to the cooler.

[0009] The lower part of the cooler is provided with a cooling water inlet, and the upper part is provided with a cooling water outlet.

[0010] The utility model purifies industrial grade hydrogen peroxide by heavy aromatic hydrocarbon, and then uses coalescer to break emulsion and make hydrogen peroxide clear and transparent, and then uses low-temperature water cooling method to cool hydrogen peroxide, reduces the solubility of organic matter, and finally uses pump to deliver industrial grade hydrogen peroxide to filter for filtering treatment and then loading and selling.

[0011] The system uses fresh or system recycled heavy aromatic hydrocarbon to purify hydrogen peroxide, and uses product coalescer to coalesce and break emulsion of the purified product, to reduce turbidity.

[0012] The product cooler uses low-temperature water medium, effectively reduces the temperature of hydrogen peroxide product, and enables part of anthraquinone organic matter to be precipitated and intercepted by the filter.

[0013] The aromatic hydrocarbon used for purification is derived from system recovered aromatic hydrocarbon and fresh aromatic hydrocarbon, and the recovered aromatic hydrocarbon is mainly from the oxidation tail gas recovered aromatic hydrocarbon.

[0014] The hydrogen peroxide product purified by the aromatic hydrocarbon is further demulsified and separated by the product coalescing separator, cooled by low-temperature water, and returned to the hydrogen peroxide storage tank.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model discloses a system for improving the quality of industrial-grade hydrogen peroxide product, which comprises an extraction tower, a purification tower connected to the extraction tower, a coalescer connected to the purification tower, a cooler connected to the coalescer, and a filter connected to the cooler.

[0017] 2. The utility model discloses a system for improving the quality of industrial-grade hydrogen peroxide product, which comprises an extraction tower, a purification tower connected to the extraction tower, a coalescer connected to the purification tower, a cooler connected to the coalescer, and a filter connected to the cooler.

[0018] 3. The utility model discloses a system for improving the quality of industrial-grade hydrogen peroxide product, which comprises an extraction tower, a purification tower connected to the extraction tower, a coalescer connected to the purification tower, a cooler connected to the coalescer, and a filter connected to the cooler. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The utility model discloses a device schematic diagram.

[0020] In the figure, the annotations are as follows: 1, extraction tower, 2, purification tower, 3, coalescer, 4, cooler, 5, storage tank, 6, delivery pump, 7, filter, 2-1, aromatic hydrocarbon inlet. DETAILED DESCRIPTION

[0021] The embodiments of the utility model will be described in detail below in combination with examples, and the following examples are only used to illustrate the utility model and should not be regarded as limiting the scope of the utility model.

[0022] Example 1

[0023] As shown in the figure, a system for improving the quality of industrial-grade hydrogen peroxide product comprises an extraction tower 1, a purification tower 2 connected to the extraction tower 1, a coalescer 3 connected to the purification tower 2, a cooler 4 connected to the coalescer 3, and a filter 7 connected to the cooler 4.

[0024] The cooler 4 and the filter 7 are connected in sequence through a storage tank 5 and a delivery pump 6.

[0025] The bottom of the extraction tower 1 is provided with a flow control valve, and the extraction tower 1 is connected with the upper part of the purification tower 2 through the flow control valve.

[0026] The bottom of the purification tower 2 is connected with the coalescer 3 through a pipeline, and the lower part of the purification tower 2 is provided with an aromatic hydrocarbon inlet 2-1.

[0027] The top of the coalescer 3 is provided with a tail gas outlet, and the side is provided with a hydrogen peroxide outlet connected with the cooler 4.

[0028] The lower part of the cooler 4 is provided with a cooling water inlet, and the upper part is provided with a cooling water outlet.

[0029] Example 2

[0030] Specific process conditions:

[0031] The hydrogen peroxide with a temperature of 50℃ in the extraction tower 1 is controlled by the flow control valve, and then enters the upper part of the purification tower 2 to contact with the aromatic hydrocarbon in the purification tower 2 (the aromatic hydrocarbon enters the purification tower 2 through the aromatic hydrocarbon inlet 2-1), and part of the organic matter mixed in the hydrogen peroxide is adsorbed by the aromatic hydrocarbon. The purified hydrogen peroxide flows out from the bottom of the purification tower 2, is broken and coalesced by the coalescing separator 3, then enters the cooler 4 through the hydrogen peroxide outlet on the side of the coalescing separator 3, and the tail gas flows out through the outlet on the top of the coalescing separator 3. The cooler 4 is connected with low-temperature water, the temperature of the hydrogen peroxide is reduced to 10-20℃, and then the hydrogen peroxide enters the storage tank 5, and finally the hydrogen peroxide is transported to the filter 7 by the conveying pump 6, and after filtering the solid impurities, it is loaded into the car and sold.

[0032] In a specific case, the organic carbon content of the hydrogen peroxide at the outlet of the extraction tower is 320ppm, and the turbidity is 250NTU, after purification by aromatic hydrocarbon, coalescing separation, low-temperature cooling and filtration, the organic carbon content of the final product is 150ppm, and the turbidity is 25NTU.

Claims

1. A system for improving the quality of an industrial grade hydrogen peroxide product, characterized by, It comprises an extraction tower (1), the extraction tower (1) is connected with a purification tower (2), the purification tower (2) is connected with a coalescer (3), the coalescer (3) is connected with a cooler (4), and the cooler (4) is connected with a filter (7).

2. The system for improving the quality of industrial-grade hydrogen peroxide products according to claim 1, characterized by, The cooler (4) and the filter (7) are connected in sequence through a storage tank (5) and a delivery pump (6).

3. The system for improving the quality of industrial-grade hydrogen peroxide products according to claim 2, characterized by, The bottom of the extraction tower (1) is provided with a flow control valve, and the extraction tower (1) is connected with the upper part of the purification tower (2) through the flow control valve.

4. The system for improving the quality of industrial-grade hydrogen peroxide products according to claim 3, characterized by, The bottom of the purification tower (2) is provided with a pipeline connected with the coalescer (3), and the lower part of the purification tower (2) is provided with an aromatic hydrocarbon inlet (2-1).

5. The system for improving the quality of industrial-grade hydrogen peroxide products according to claim 4, characterized by, The top of the coalescer (3) is provided with a tail gas outlet, and the side is provided with a hydrogen peroxide outlet connected with the cooler (4).

6. The system for improving the quality of industrial-grade hydrogen peroxide products according to claim 5, characterized by, The lower part of the cooler (4) is provided with a cooling water inlet, and the upper part is provided with a cooling water outlet.

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