CN203392865U - Device for improving operation cycle of wet-process phosphoric acid concentration system - Google Patents
Device for improving operation cycle of wet-process phosphoric acid concentration system Download PDFInfo
- Publication number
- CN203392865U CN203392865U CN201320452197.3U CN201320452197U CN203392865U CN 203392865 U CN203392865 U CN 203392865U CN 201320452197 U CN201320452197 U CN 201320452197U CN 203392865 U CN203392865 U CN 203392865U
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- China
- Prior art keywords
- phosphoric acid
- concentration system
- wet
- dilute phosphoric
- operation cycle
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a device for improving an operation cycle of a wet-process phosphoric acid concentration system and relates to phosphoric acid. The device comprises a membrane filter (1) and a dilute phosphoric acid pump (5), wherein a clear liquid outlet of the membrane filter (1) is connected to a concentration system (4) by the dilute phosphoric acid pump (5); a slurry outlet of the membrane filter (1) is connected with a slag discharging tank (2); an outlet of the slag discharging tank (2) is connected to an MAP (Monoammonium Phosphate) device (6) by a pipeline; a stirrer (7) is arranged in the slag discharging tank (2). The device disclosed by the utility model is adopted, so that solid content in dilute phosphoric acid in dihydrate wet-process phosphoric acid can be lowered, the filtered dilute phosphoric acid is clear, a blockage condition of a heat exchanger tube nest of the concentration system is relieved, and operation cycle of the concentration system is improved, thereby lowering production cost of phosphoric acid and having better social benefits and economic benefits.
Description
Technical field
The utility model relates to phosphoric acid, furthermore, relates to the concentrating unit of phosphoric acid by wet process.
Background technology
As everyone knows, in dihydrate wet-process phosphoric acid production process, the phosphoric acid product obtaining only has the concentration of 25% left and right, also needs further to concentrate and just can reach 46% left and right.In traditional technology, reaction slurry directly enters dilute phosphoric acid storage tank after filtering by filter, and the running of storage tank by turning rake deposits to the cone end by slurry and by shurry pump, be transported to reactive tank again.Because filter cloth cracky can directly cause the rising of dilute phosphoric acid solid content, higher to the product acid solid content that makes diluted acid after concentrated, thus accelerate the cycle of operation and the derived product quality that concentration systems fouling affects concentration systems.When serious, even can bury extremely turning rake, have to clear up diluted acid storage tank.Increase the loss of phosphoric acid, have a strong impact on phosphoric acid production cost.
In relevant prior art, in wet method two water law production process of phosphoric acid, in dilute phosphoric acid, due to solid content height, affect the heat exchanger tube fouling duration of congestion of concentration systems, concentrated strong phosphoric acid product solid content height out directly has influence on the quality of derived product DAP and the production cost of PPA in addition, though also there is the Scale inhibitors of adding to increase concentration systems working time, but can not reduce strong phosphoric acid solid content, so people constantly find the technology that reduces phosphoric acid solid content in wet method two water law production process of phosphoric acid.
Summary of the invention
The purpose of this utility model is to provide a kind of and improves the device of the concentration systems cycle of operation by reducing solid content in phosphoric acid by wet process dilute phosphoric acid.
The device that contriver provides comprises: film filter and dilute phosphoric acid pump, and the purified liquor outlet of described film filter is connected to concentration systems by dilute phosphoric acid pump, and the slurry outlet of described film filter connects deslagging pond; The outlet in described deslagging pond connects shurry pump and is connected to MAP device by pipeline; Described deslagging is provided with agitator in pond.
Contriver points out: increase a film filter, the dilute phosphoric acid that reaction slurry is filtered, by film filter, obtains the dilute phosphoric acid of clarification, then by pump delivery to concentration systems as dilute phosphoric acid feed, thereby reduce the amount of scale buildup of phosphoric acid when concentrated, improve the concentration systems cycle of operation.
The beneficial effects of the utility model are: adopt after this device, reduced the solid content in dilute phosphoric acid in wet method two water law phosphoric acid, make to filter the dilute phosphoric acid clarification that becomes, alleviate concentration systems heat exchanger tube stopping state, the concentration systems cycle of operation doubles.Thereby reduce phosphoric acid production cost, there is good Social benefit and economic benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1-film filter; 2-deslagging pond; 3-shurry pump; 4-concentration systems; 5-dilute phosphoric acid pump; 6-MAP device; 7-agitator.
embodiment
Wengfu phosphate fertilizer plant of Wengfu (group) company limited phosphoric acid production device.
embodiment 1:device comprises film filter 1 and dilute phosphoric acid pump 5, and the purified liquor outlet of described film filter 1 is connected to concentration systems 4 by dilute phosphoric acid pump 5, and the slurry outlet of described film filter 1 connects deslagging pond 2; The outlet in described deslagging pond 2 connects shurry pump 3 and is connected to MAP device 6 by pipeline; In described deslagging pond 2, be provided with agitator 7.
Claims (1)
1. a device that improves the wet-process phosphoric acid concentration system cycle of operation, it is characterized in that described device comprises film filter (1) and dilute phosphoric acid pump (5), the purified liquor outlet of described film filter (1) is connected to concentration systems (4) by dilute phosphoric acid pump (5), and the slurry outlet of described film filter (1) connects deslagging pond (2); The outlet in described deslagging pond (2) connects shurry pump (3) and is connected to MAP device (6) by pipeline; In described deslagging pond (2), be provided with agitator (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320452197.3U CN203392865U (en) | 2013-07-29 | 2013-07-29 | Device for improving operation cycle of wet-process phosphoric acid concentration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320452197.3U CN203392865U (en) | 2013-07-29 | 2013-07-29 | Device for improving operation cycle of wet-process phosphoric acid concentration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203392865U true CN203392865U (en) | 2014-01-15 |
Family
ID=49904412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320452197.3U Withdrawn - After Issue CN203392865U (en) | 2013-07-29 | 2013-07-29 | Device for improving operation cycle of wet-process phosphoric acid concentration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203392865U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104340962A (en) * | 2013-07-29 | 2015-02-11 | 瓮福（集团）有限责任公司 | Method and apparatus for improving operation period of wet-process phosphoric acid condensation system |
-
2013
- 2013-07-29 CN CN201320452197.3U patent/CN203392865U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104340962A (en) * | 2013-07-29 | 2015-02-11 | 瓮福（集团）有限责任公司 | Method and apparatus for improving operation period of wet-process phosphoric acid condensation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140115 Effective date of abandoning: 20160413 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |