CN211283731U - Extraction purification water inlet and outlet system in hydrogen peroxide production - Google Patents
Extraction purification water inlet and outlet system in hydrogen peroxide production Download PDFInfo
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- CN211283731U CN211283731U CN201922312162.XU CN201922312162U CN211283731U CN 211283731 U CN211283731 U CN 211283731U CN 201922312162 U CN201922312162 U CN 201922312162U CN 211283731 U CN211283731 U CN 211283731U
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Abstract
An extraction purification water inlet and outlet system in hydrogen peroxide production relates to a hydrogen peroxide production process, and comprises a pure water pipe, a phosphoric acid pipe, a finished product pipe, an extraction tower and a purification tower, wherein the extraction tower is provided with an oxidation liquid inlet, a pure water inlet, an extraction liquid outlet and a raffinate outlet; an aromatic hydrocarbon inlet, a hydrogen peroxide inlet and a hydrogen peroxide outlet are arranged on the purification tower; the water outlet of the pure water pipe is connected with the cold side inlet of the plate heat exchanger, the cold side outlet of the plate heat exchanger is connected with the pure water heater, and the water outlet of the pure water heater is connected with the pure water inlet of the extraction tower after being connected with the outlet of the phosphoric acid pipe in parallel; an extract liquid outlet of the extraction tower is connected with a hot side inlet of the plate heat exchanger, a hot side outlet of the plate heat exchanger is connected with a hydrogen peroxide inlet of the purification tower, a hydrogen peroxide outlet of the purification tower is connected with a first hydrogen peroxide pipeline pump, an outlet of the first hydrogen peroxide pipeline pump is sequentially connected with a hydrogen peroxide filter and a coalescer, and a liquid outlet of the coalescer is connected with a finished product pipe. The utility model discloses the running cost is low, the security is high.
Description
Technical Field
The utility model relates to a hydrogen peroxide production process, in particular to an extraction purification water inlet and outlet process flow.
Background
In the hydrogen peroxide production process, the extractant pure water which needs to participate in extraction is sent from the outside, as shown in fig. 2, the extractant pure water firstly enters a pure water head tank 20 of a third-fourth tower, the pure water in the pure water head tank 20 flows to a pure water preparation tank 21 by the position difference, the pure water preparation tank 21 is generally divided into two tanks, and the prepared pure water is directly sent to a pure water distributor at the top of an extraction section of an extraction tower 23 by a pure water pump 22 in the normal operation process; the other tank starts to supplement pure water, add acid and heat up, and the two tanks are changed in turn for use. Pure water sent to the upper part of the extraction section of the extraction tower 23 by a pure water pump 22 is subjected to countercurrent extraction with the oxidation liquid in an oxidation liquid pipe 24 at the bottom of the extraction tower 23, an extraction liquid (crude hydrogen peroxide) is obtained from an outlet at the bottom of the extraction tower, and then the extraction liquid (crude hydrogen peroxide) with a certain flow is controlled to enter an extraction liquid distributor at the top of a purification tower 25 by means of potential difference; the crude hydrogen peroxide flows downwards in the purification tower 25 and carries out countercurrent extraction with the aromatic hydrocarbon added from the bottom of the extraction section of the purification tower, the extracted hydrogen peroxide enters an aromatic hydrocarbon separator 26, the aromatic hydrocarbon in a free state is initially separated by standing, then enters a hydrogen peroxide intermediate tank 27 by the potential difference to remove part of the aromatic hydrocarbon in the free state by adding a stabilizing agent and air blowing, and then is sent to a finished product tank area through a dilute intermediate pump 28.
The defects of water inlet and outlet in the traditional extraction and purification process are as follows:
the separation effect of the dilute product separator in the traditional extraction and purification process is poor, the free aromatic hydrocarbon is difficult to separate from hydrogen peroxide by standing for too short time, and the free aromatic hydrocarbon is swept by air in a hydrogen peroxide intermediate tank, so that the aromatic hydrocarbon loss is large, the site environment pollution is serious, and the danger of explosion is caused.
Secondly, in the traditional extraction and purification process, a large amount of manual operation is needed for adding water into a pure water tank, adding phosphoric acid, heating the pure water, adding a stabilizer into a hydrogen peroxide intermediate tank, switching the pure water tank for use, delivering dilute products from the hydrogen peroxide intermediate tank, detecting the acidity of the pure water tank and the like, so that the labor is wasted, and misoperation is easily caused.
And thirdly, in the traditional extraction and purification process, because no filter is used for filtering solid particle impurities and the like, the solid particle impurities brought into the finished product can cause the reduction of the stability of the finished product.
The traditional extraction and purification process needs 9 pure water tanks, two dilute product intermediate tanks, two pure water pumps, two dilute product intermediate pumps, a pure water head tank and the like, and the investment is large; electric energy is wasted by normally turning on a pure water pump and intermittently turning on a dilute intermediate pump.
Disclosure of Invention
The utility model aims at overcoming the defects of the prior art and providing an extraction purification water inlet and outlet system in hydrogen peroxide production with low operation cost and high safety.
The purpose of the utility model is realized like this: the extraction purification water inlet and outlet system in hydrogen peroxide production comprises a pure water pipe connected with an external pure water pump, a phosphoric acid pipe connected with a phosphoric acid pump, a finished product pipe connected with a finished product tank area, an extraction tower and a purification tower, wherein the extraction tower is provided with an oxidizing liquid inlet, a pure water inlet, an extract liquid outlet and a raffinate liquid outlet, and the pure water inlet is positioned at the upper part of the extraction tower; an aromatic hydrocarbon inlet, a hydrogen peroxide inlet and a hydrogen peroxide outlet are arranged on the purification tower; the water outlet of the pure water pipe is connected with the cold side inlet of the plate heat exchanger, the cold side outlet of the plate heat exchanger is connected with the pure water heater, and the water outlet of the pure water heater is connected with the pure water inlet of the extraction tower after being connected with the outlet of the phosphoric acid pipe in parallel; the extraction liquid outlet of the extraction tower is connected with the hot side inlet of the plate heat exchanger, the hot side outlet of the plate heat exchanger is connected with the hydrogen peroxide inlet of the purification tower, the hydrogen peroxide outlet of the purification tower is connected with the first hydrogen peroxide pipeline pump, the outlet of the first hydrogen peroxide pipeline pump is connected with the hydrogen peroxide filter, the outlet of the hydrogen peroxide filter is connected with the coalescer, and the liquid outlet of the coalescer is connected with the inlet of the finished product pipe.
In the production process of hydrogen peroxide, extracting agent pure water to be extracted is sent by an external pure water pump, a certain flow is controlled by a flow meter to exchange heat with an extraction liquid (crude hydrogen peroxide) at an extraction liquid outlet of an extraction tower, then the extraction liquid is heated by steam through a pure water heater to control a certain temperature, then a certain amount of phosphoric acid is sent by a phosphoric acid meter, then the extraction liquid is sent to a pure water inlet at the upper part of an extraction section of the extraction tower to carry out countercurrent extraction with an oxidation liquid added from the bottom of the extraction tower, extraction liquid (crude hydrogen peroxide) is obtained from an outlet at the bottom of the extraction tower, the extraction liquid exchanges heat with pure water newly fed into a plate heat exchanger through the plate heat exchanger, and then the; the crude hydrogen peroxide in the purification tower flows downwards from the top of the purification tower and carries out countercurrent extraction with the aromatic hydrocarbon added from the bottom of the extraction section of the purification tower, and the extracted hydrogen peroxide is pressurized and sent to a finished product tank area through a pipeline pump after most of solid impurities and most of free organic solvent are removed by a hydrogen peroxide filter and a coalescer.
The utility model has the advantages that:
the pure water is directly sent to the upper part of the extraction section of the extraction tower by the pressure of an external pure water pump, and water is directly added into the extraction tower, so that the original investment of a pure water pump, a pure water tank, a pure water head tank and the like is saved.
Secondly, a platen heat exchanger is added, the heat of the extraction liquid is used for heating pure water, the heat energy of the system is fully utilized, and meanwhile, the purification temperature is reduced, so that a better purification effect is achieved; a set of small heaters (pure water heaters) is added for heating pure water, so that the heating temperature of the pure water is more stable.
And thirdly, most solid impurities are filtered by the hydrogen peroxide filter, so that the content of the solid impurities in the finished product is low, and the stability of the finished product is high.
The effect of removing the free organic impurities in the hydrogen peroxide by the coalescer is better than that of the traditional purging effect, most of the free organic matters (mainly aromatic hydrocarbons) in the hydrogen peroxide can be recycled, the aromatic hydrocarbon consumption of a system is reduced, the environment is not polluted, and the explosion is avoided.
Fully utilizing the pressure potential energy of an external pure water pump to directly send the pure water to the upper part of the extraction section of the extraction tower, and utilizing the pressure potential energy of a hydrogen peroxide outlet of the purification tower to directly send the hydrogen peroxide to a finished product tank through the pressurization of a hydrogen peroxide pipeline pump; compared with the traditional process, the process saves the electric energy of a pure water delivery pump (a centrifugal pump) and a hydrogen peroxide intermediate pump (a centrifugal pump).
The utility model discloses a business turn over water system still includes second hydrogen peroxide solution pipeline pump, and the import of second hydrogen peroxide solution pipeline pump is connected with the hydrogen peroxide solution export of purifying column after parallelly connected with the import of first hydrogen peroxide solution pipeline pump, and the export of second hydrogen peroxide solution pipeline pump is connected with the import of hydrogen peroxide solution filter after parallelly connected with the export of first hydrogen peroxide solution pipeline pump. The first and the second pump are provided.
The utility model discloses still set up useless aromatic hydrocarbon export on the purifying column, the useless aromatic hydrocarbon storage tank is connected to the useless aromatic hydrocarbon export of purifying column and the parallelly connected back of the aromatic hydrocarbon discharge port of coalescer, concentrates useless aromatic hydrocarbon to retrieve.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of a conventional technique.
Detailed Description
As shown in figure 1, the extraction purification water inlet and outlet system in hydrogen peroxide production comprises an extraction tower 5 and a purification tower 7, wherein the extraction tower 5 is provided with an oxidation liquid inlet 5-1, a pure water inlet 5-3, an extract liquid outlet 5-4 and a raffinate outlet 5-2. The extraction tower 5 comprises an upper separation section and a lower extraction section, an oxidation liquid inlet 5-1 is positioned at the lower part of the extraction section of the extraction tower 5, a pure water inlet 5-3 is positioned at the upper part of the extraction section of the extraction tower 5, an extract liquid outlet 5-4 is positioned at the bottom of the extraction section of the extraction tower 5, and a raffinate liquid outlet 5-2 is positioned at the middle part of the separation section of the extraction tower 5. An aromatic hydrocarbon inlet 7-1, a hydrogen peroxide inlet 7-3, a hydrogen peroxide outlet 7-2 and a waste aromatic hydrocarbon outlet 7-4 are arranged on the purifying tower 7, the aromatic hydrocarbon inlet 7-1 is positioned at the lower part of the purifying tower 7, the hydrogen peroxide inlet 7-3 is positioned at the upper part of the purifying tower 7, the hydrogen peroxide outlet 7-2 is positioned at the bottom of the purifying tower 7, and the waste aromatic hydrocarbon outlet 7-4 is positioned at the upper part of the purifying tower 7.
The water inlet and outlet system also comprises a pure water pipe 1 connected with an external pure water pump and a phosphoric acid pipe 2 connected with the phosphoric acid pump, the water outlet of the pure water pipe 1 is connected with a cold side inlet 6-1 of the plate heat exchanger 6, a cold side outlet 6-2 of the plate heat exchanger 6 is connected with a pure water heater 3, the pure water heater 3 is heated by steam conveyed by a steam pipe 4 to control a certain temperature, and the water outlet of the pure water heater 3 is connected with the pure water inlet 5-3 of the extraction tower 5 after being connected with the outlet of the phosphoric acid pipe 2 in parallel. An extract liquid outlet 5-2 of the extraction tower 5 is connected with a hot side inlet 6-3 of the plate heat exchanger 6, and a hot side outlet 6-4 of the plate heat exchanger 6 is connected with a hydrogen peroxide inlet 7-3 of the purification tower 7.
An inlet of the first hydrogen peroxide pipeline pump 8 is connected with an inlet of the second hydrogen peroxide pipeline pump 9 in parallel and then connected with a hydrogen peroxide outlet 7-2 of the purification tower 7, an outlet of the first hydrogen peroxide pipeline pump 8 is connected with an outlet of the second hydrogen peroxide pipeline pump 9 in parallel and then connected with an inlet of a hydrogen peroxide filter 10, an outlet of the hydrogen peroxide filter 10 is connected with a liquid inlet of a coalescer 11, a liquid outlet of the coalescer 11 is connected into a product pipe 12, and an outlet of the product pipe 12 is connected with a finished product tank area.
The waste aromatic hydrocarbon outlet 7-4 of the purifying tower 7 is connected with the waste aromatic hydrocarbon storage tank 13 after being connected with the aromatic hydrocarbon discharge port of the coalescer 11 in parallel.
Claims (3)
1. The extraction purification water inlet and outlet system in hydrogen peroxide production comprises a pure water pipe connected with an external pure water pump, a phosphoric acid pipe connected with a phosphoric acid pump, a finished product pipe connected with a finished product tank area, an extraction tower and a purification tower, wherein the extraction tower is provided with an oxidizing liquid inlet, a pure water inlet, an extract liquid outlet and a raffinate liquid outlet, and the pure water inlet is positioned at the upper part of the extraction tower; an aromatic hydrocarbon inlet, a hydrogen peroxide inlet and a hydrogen peroxide outlet are arranged on the purification tower; the method is characterized in that: the water outlet of the pure water pipe is connected with the cold side inlet of the plate heat exchanger, the cold side outlet of the plate heat exchanger is connected with the pure water heater, and the water outlet of the pure water heater is connected with the pure water inlet of the extraction tower after being connected with the outlet of the phosphoric acid pipe in parallel; the extraction liquid outlet of the extraction tower is connected with the hot side inlet of the plate heat exchanger, the hot side outlet of the plate heat exchanger is connected with the hydrogen peroxide inlet of the purification tower, the hydrogen peroxide outlet of the purification tower is connected with the first hydrogen peroxide pipeline pump, the outlet of the first hydrogen peroxide pipeline pump is connected with the hydrogen peroxide filter, the outlet of the hydrogen peroxide filter is connected with the coalescer, and the liquid outlet of the coalescer is connected with the inlet of the finished product pipe.
2. The extraction purification water inlet and outlet system in hydrogen peroxide production according to claim 1, which is characterized in that: the water inlet and outlet system further comprises a second hydrogen peroxide pipeline pump, the inlet of the second hydrogen peroxide pipeline pump is connected with the hydrogen peroxide outlet of the purification tower after being connected with the inlet of the first hydrogen peroxide pipeline pump in parallel, and the outlet of the second hydrogen peroxide pipeline pump is connected with the inlet of the hydrogen peroxide filter after being connected with the outlet of the first hydrogen peroxide pipeline pump in parallel.
3. The extraction purification water inlet and outlet system in hydrogen peroxide production according to claim 1, which is characterized in that: and the purification tower is also provided with a waste aromatic hydrocarbon outlet, and the waste aromatic hydrocarbon outlet of the purification tower is connected with the waste aromatic hydrocarbon storage tank after being connected with the aromatic hydrocarbon discharge port of the coalescer in parallel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922312162.XU CN211283731U (en) | 2019-12-20 | 2019-12-20 | Extraction purification water inlet and outlet system in hydrogen peroxide production |
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| CN201922312162.XU CN211283731U (en) | 2019-12-20 | 2019-12-20 | Extraction purification water inlet and outlet system in hydrogen peroxide production |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114956006A (en) * | 2021-12-13 | 2022-08-30 | 安徽国泰化工有限公司 | Pure water heating energy-saving system for supplementing hydrogen peroxide extraction tower |
| CN115557470A (en) * | 2022-10-31 | 2023-01-03 | 湖南双阳高科化工有限公司 | Production method and production device of electronic-grade hydrogen peroxide |
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2019
- 2019-12-20 CN CN201922312162.XU patent/CN211283731U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114956006A (en) * | 2021-12-13 | 2022-08-30 | 安徽国泰化工有限公司 | Pure water heating energy-saving system for supplementing hydrogen peroxide extraction tower |
| CN115557470A (en) * | 2022-10-31 | 2023-01-03 | 湖南双阳高科化工有限公司 | Production method and production device of electronic-grade hydrogen peroxide |
| CN115557470B (en) * | 2022-10-31 | 2023-10-17 | 湖南双阳高科化工有限公司 | Production method and production device of electronic grade hydrogen peroxide |
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Address after: Room 101, Building 11, Jinrong Science and Technology Park, No. 158 Ji'an South Road, High tech Development Zone, Yangzhou City, Jiangsu Province, 225128 Patentee after: Jiangsu Zhongxu Technology Co.,Ltd. Address before: No. 4, Huagang Road, Hanjiang Industrial Park, Yangzhou, Jiangsu 225128 Patentee before: Yangzhou Rongxiang Technology Development Co.,Ltd. |