CN204778841U - Absorption process preparation polyphosphoric acid's production line - Google Patents
Absorption process preparation polyphosphoric acid's production line Download PDFInfo
- Publication number
- CN204778841U CN204778841U CN201520369473.9U CN201520369473U CN204778841U CN 204778841 U CN204778841 U CN 204778841U CN 201520369473 U CN201520369473 U CN 201520369473U CN 204778841 U CN204778841 U CN 204778841U
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- CN
- China
- Prior art keywords
- polyphosphoric acid
- acid synthesis
- yellow phosphorus
- cauldron
- synthesis reactor
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Abstract
The utility model relates to a phosphorus chemical engineering technology field discloses an absorption process preparation polyphosphoric acid's production line, including synthetic jar of yellow phosphorus holding vessel, combustion of phosphorus cauldron, phosphoric acid, the synthetic cauldron of polyphosphoric acid and polyphosphoric acid collection tank, yellow phosphorus holding vessel bottom is connected with combustion of phosphorus cauldron top, is equipped with atomising head and air conduit in the combustion of phosphorus cauldron, and combustion of phosphorus cauldron lateral wall is equipped with two gas outlets, and two gas outlets are connected with synthetic jar of phosphoric acid and polyphosphoric acid synthesis cauldron respectively, the synthetic cauldron top of polyphosphoric acid is connected with phosphoric acid synthetic tank bottoms portion, and polyphosphoric acid synthesizes to be equipped with in the cauldron and sprays the mechanism, and the synthetic cauldron of polyphosphoric acid is connected with the polyphosphoric acid collection tank, the synthetic jar of phosphoric acid is equipped with the inlet tube. It includes flexible pipeline, shower head and cleans the pole to spray the mechanism. This production line will be prepared phosphoric pentoxide and take place in different containers with preparation polyphosphoric acid, and the polyphosphoric acid purity that makes is high, and impurity is few, can solve the polyphosphoric acid adhesion is difficult to the collection on the reaction vessel inner wall problem in addition.
Description
Technical field
The utility model relates to technical field of phosphorous chemical industry, particularly relates to the production line that a kind of absorption process prepares polyphosphoric acid.
Background technology
Polyphosphoric acid is a kind of important industrial chemicals, has a wide range of applications in fields such as pigment, medicine, spices, leathers.Polyphosphoric acid is a kind of water white transparency thick liquid, has very strong corrodibility, is by the mixture of a series of phosphoric acid polymerization thing.
The preparation method of polyphosphoric acid has a variety of, and practical application has heating method of enrichment, synthesis method, absorption process etc. more widely.Wherein, absorption process first yellow phosphorus is generated Vanadium Pentoxide in FLAKES in synthesis reactor combustion, then the phosphoric acid cooled in advance is sprayed on synthesis reactor inwall and form one deck sorrel, Vanadium Pentoxide in FLAKES is absorbed and makes polyphosphoric acid, the polyphosphoric acid purity that absorption process obtains is high, quality better, production cost is also higher.
The weak point of existing production technique is, phosphoric acid sprays on synthesis reactor inwall and distributes not evenly, and the speed causing each position in synthesis reactor to generate polyphosphoric acid differs, and reaction efficiency is not high yet.And existing absorption process to prepare polyphosphoric acid be Vanadium Pentoxide in FLAKES and polyphosphoric acid are carried out in same reactor, design like this can cause a small amount of unburned yellow phosphorus and be mingled in polyphosphoric acid after not solidifying with the Vanadium Pentoxide in FLAKES of phosphatase reaction, causes certain influence to the purity of polyphosphoric acid.
In addition, and due to polyphosphoric acid comparatively sticky, polyphosphoric acid is understood some and can be sticked on the inwall of synthesis reactor after generating, and is not only difficult to collect, and affects output, and is not easy to clean.
Utility model content
In order to overcome above-mentioned technical problem of the prior art, the utility model provides the production line that a kind of absorption process prepares polyphosphoric acid, this production line adopts absorption process to prepare polyphosphoric acid, and the generation of Vanadium Pentoxide in FLAKES and the generation of polyphosphoric acid are occurred in different containers, final obtained polyphosphoric acid purity is high, and impurity is few; In addition can also solve polyphosphoric acid and adhere to problem reaction vessel inwall being difficult to collect.
Concrete technical scheme of the present utility model is: a kind of absorption process prepares the production line of polyphosphoric acid, comprise yellow phosphorus hold-up vessel, yellow phosphorus burning still, phosphoric acid synthesis tank, polyphosphoric acid synthesis reactor and polyphosphoric acid holding tank, discharge port bottom described yellow phosphorus hold-up vessel is connected with the opening for feed at the top of described yellow phosphorus burning still, yellow phosphorus burning still inside is provided with the fog-spray nozzle be connected with its opening for feed, in yellow phosphorus burning still, bottom is provided with air line, yellow phosphorus burning still side wall upper part is provided with two air outlets, described two air outlets are connected with the inlet mouth of phosphoric acid synthesis tank and the intake ducting of polyphosphoric acid synthesis reactor respectively, the opening for feed at described polyphosphoric acid synthesis reactor top is connected with the discharge port bottom described phosphoric acid synthesis tank, is provided with the spraying mechanism be connected with its opening for feed in polyphosphoric acid synthesis reactor, and the discharge port of polyphosphoric acid synthesis reactor is connected with described polyphosphoric acid holding tank, the top of described phosphoric acid synthesis tank is also provided with water inlet pipe.
Described spraying mechanism comprises the telescopic pipes, the spray header be connected with described telescopic pipes that vertically arrange and fixes with telescopic pipes and the wiping rod of horizontal positioned, is fixed and telescopic pipes can rotation between telescopic pipes and polyphosphoric acid synthesis reactor roof by bearing.
During the utility model running, air enters in yellow phosphorus burning still from air line, yellow phosphorus enters in yellow phosphorus burning still through fog-spray nozzle with Sprayable after yellow phosphorus stores in-pot melting, react after yellow phosphorus contacts with air and generate the Vanadium Pentoxide in FLAKES of gaseous state, Vanadium Pentoxide in FLAKES is discharged from venting port, enters respectively in phosphoric acid synthesis tank and polyphosphoric acid synthesis reactor again.
Water enters phosphoric acid synthesis tank through water inlet pipe, react with Vanadium Pentoxide in FLAKES and generate phosphoric acid, phosphoric acid from phosphoric acid synthesis tank through spraying mechanism spray contact with Vanadium Pentoxide in FLAKES in polyphosphoric acid synthesis reactor after synthesize polyphosphoric acid, polyphosphoric acid falls into bottom synthesis reactor and enters polyphosphoric acid holding tank.When the polyphosphoric acid synthesized adheres to polyphosphoric acid synthesis reactor inner side-wall in a large number, can control telescopic pipes and extend and rotate, wiping block like this has enough to meet the need along polyphosphoric acid synthesis reactor inwall, can effectively scrape the polyphosphoric acid adhered on synthesis reactor.
As preferably, described telescopic pipes is located at polyphosphoric acid synthesis reactor center of top.
As preferably, the two ends of described wiping rod are provided with wiping block, and described wiping block abuts with polyphosphoric acid synthesis reactor inner side-wall respectively.
As preferably, described air line and intake ducting are coil-like, and air line and intake ducting are evenly distributed with air dispelling hole separately.Design gas like this can be distributed in synthesis reactor equably.
As preferably, the discharge outlet of described yellow phosphorus hold-up vessel, the air outlet place of yellow phosphorus burning still, the discharge outlet of polyphosphoric acid synthesis reactor, the discharge outlet of phosphoric acid synthesis tank are equipped with pump and valve.The water inlet pipe of phosphoric acid synthesis tank is also provided with valve.
Be compared with the prior art, the beneficial effects of the utility model are: this production line adopts absorption process to prepare polyphosphoric acid, and the generation of Vanadium Pentoxide in FLAKES and the generation of polyphosphoric acid are occurred in different containers, final obtained polyphosphoric acid purity is high, and impurity is few; In addition can also solve polyphosphoric acid and adhere to problem reaction vessel inwall being difficult to collect.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Reference numeral is: yellow phosphorus hold-up vessel 1, yellow phosphorus burning still 2, phosphoric acid synthesis tank 3, polyphosphoric acid synthesis reactor 4, polyphosphoric acid holding tank 5, air dispelling hole 6, pump 7, valve 8, fog-spray nozzle 21, air line 22, air outlet 23, water inlet pipe 31, intake ducting 41, telescopic pipes 42, spray header 43, wiping rod 44, wiping block 45.
Embodiment
Below in conjunction with embodiment, the utility model will be further described.
Embodiment 1
As shown in Figure 1: a kind of absorption process prepares the production line of polyphosphoric acid, comprise yellow phosphorus hold-up vessel 1, yellow phosphorus burning still 2, phosphoric acid synthesis tank 3, polyphosphoric acid synthesis reactor 4 and polyphosphoric acid holding tank 5, discharge port bottom described yellow phosphorus hold-up vessel is connected with the opening for feed at the top of described yellow phosphorus burning still, yellow phosphorus burning still inside is provided with the fog-spray nozzle 21 be connected with its opening for feed, in yellow phosphorus burning still, bottom is provided with air line 22, yellow phosphorus burning still side wall upper part is provided with two air outlets 23, described two air outlets are connected with the inlet mouth of phosphoric acid synthesis tank and the intake ducting 41 of polyphosphoric acid synthesis reactor respectively, the opening for feed at described polyphosphoric acid synthesis reactor top is connected with the discharge port bottom described phosphoric acid synthesis tank, is provided with the spraying mechanism be connected with its opening for feed in polyphosphoric acid synthesis reactor, and the discharge port of polyphosphoric acid synthesis reactor is connected with described polyphosphoric acid holding tank, the top of described phosphoric acid synthesis tank is also provided with water inlet pipe 31.
Described spraying mechanism comprises the telescopic pipes 42, the spray header 43 be connected with described telescopic pipes that vertically arrange and fixes with telescopic pipes and the wiping rod 44 of horizontal positioned, and telescopic pipes is located at polyphosphoric acid synthesis reactor center of top and and is fixed by bearing between polyphosphoric acid synthesis reactor roof and telescopic pipes can rotation.The two ends of described wiping rod are provided with wiping block 45, and described wiping block abuts with polyphosphoric acid synthesis reactor inner side-wall respectively.
Described air line and intake ducting are coil-like, and air line and intake ducting are evenly distributed with air dispelling hole 6 separately.
The discharge outlet of described yellow phosphorus hold-up vessel, the air outlet place of yellow phosphorus burning still, the discharge outlet of polyphosphoric acid synthesis reactor, the discharge outlet of phosphoric acid synthesis tank are equipped with pump 7 and valve 8, and the water inlet pipe of phosphoric acid synthesis tank is provided with valve 8.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure transformation, all still belong to the protection domain of technical solutions of the utility model.
Claims (5)
1. an absorption process prepares the production line of polyphosphoric acid, it is characterized in that, comprise yellow phosphorus hold-up vessel (1), yellow phosphorus burning still (2), phosphoric acid synthesis tank (3), polyphosphoric acid synthesis reactor (4) and polyphosphoric acid holding tank (5), discharge port bottom described yellow phosphorus hold-up vessel is connected with the opening for feed at the top of described yellow phosphorus burning still, yellow phosphorus burning still inside is provided with the fog-spray nozzle (21) be connected with its opening for feed, in yellow phosphorus burning still, bottom is provided with air line (22), yellow phosphorus burning still side wall upper part is provided with two air outlets (23), described two air outlets are connected with the inlet mouth of phosphoric acid synthesis tank and the intake ducting (41) of polyphosphoric acid synthesis reactor respectively, the opening for feed at described polyphosphoric acid synthesis reactor top is connected with the discharge port bottom described phosphoric acid synthesis tank, is provided with the spraying mechanism be connected with its opening for feed in polyphosphoric acid synthesis reactor, and the discharge port of polyphosphoric acid synthesis reactor is connected with described polyphosphoric acid holding tank, the top of described phosphoric acid synthesis tank is also provided with water inlet pipe (31),
Described spraying mechanism comprises the telescopic pipes (42), the spray header (43) be connected with described telescopic pipes that vertically arrange and fixes with telescopic pipes and the wiping rod of horizontal positioned (44), is fixed and telescopic pipes can rotation between telescopic pipes and polyphosphoric acid synthesis reactor roof by bearing.
2. absorption process as claimed in claim 1 prepares the production line of polyphosphoric acid, and it is characterized in that, described telescopic pipes is located at polyphosphoric acid synthesis reactor center of top.
3. absorption process as claimed in claim 1 prepares the production line of polyphosphoric acid, and it is characterized in that, the two ends of described wiping rod are provided with wiping block (45), and described wiping block abuts with polyphosphoric acid synthesis reactor inner side-wall respectively.
4. absorption process as claimed in claim 1 prepares the production line of polyphosphoric acid, and it is characterized in that, described air line and intake ducting are coil-like, and air line and intake ducting are evenly distributed with air dispelling hole (6) separately.
5. absorption process as claimed in claim 1 prepares the production line of polyphosphoric acid, it is characterized in that, the discharge outlet of described yellow phosphorus hold-up vessel, the air outlet place of yellow phosphorus burning still, the discharge outlet of polyphosphoric acid synthesis reactor, the discharge outlet of phosphoric acid synthesis tank are equipped with pump (7) and valve (8), and the water inlet pipe of phosphoric acid synthesis tank is provided with valve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520369473.9U CN204778841U (en) | 2015-06-01 | 2015-06-01 | Absorption process preparation polyphosphoric acid's production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520369473.9U CN204778841U (en) | 2015-06-01 | 2015-06-01 | Absorption process preparation polyphosphoric acid's production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204778841U true CN204778841U (en) | 2015-11-18 |
Family
ID=54518933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520369473.9U Expired - Fee Related CN204778841U (en) | 2015-06-01 | 2015-06-01 | Absorption process preparation polyphosphoric acid's production line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204778841U (en) |
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2015
- 2015-06-01 CN CN201520369473.9U patent/CN204778841U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20160601 |