CN203807174U - 70 phosphoric acid production device - Google Patents
70 phosphoric acid production device Download PDFInfo
- Publication number
- CN203807174U CN203807174U CN201420204503.6U CN201420204503U CN203807174U CN 203807174 U CN203807174 U CN 203807174U CN 201420204503 U CN201420204503 U CN 201420204503U CN 203807174 U CN203807174 U CN 203807174U
- Authority
- CN
- China
- Prior art keywords
- acid
- graphite
- tower
- graphite tower
- nozzle
- Prior art date
- 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.)
- Expired - Lifetime
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- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 229910000147 aluminium phosphate Inorganic materials 0.000 title claims abstract description 17
- 239000002253 acid Substances 0.000 claims abstract description 75
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 72
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 72
- 239000010439 graphite Substances 0.000 claims abstract description 72
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 23
- 239000011574 phosphorus Substances 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 125000004122 cyclic group Chemical group 0.000 claims description 9
- 239000010881 fly ash Substances 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 10
- 239000003546 flue gas Substances 0.000 abstract description 10
- 239000007789 gas Substances 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 239000010802 sludge Substances 0.000 abstract 3
- 239000000428 dust Substances 0.000 abstract 2
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 16
- 238000010521 absorption reaction Methods 0.000 description 3
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a 70 phosphoric acid production device which comprises a sludge phosphorus combustion furnace, a graphite tower, a Venturi tube, a draft fan, an emptying pipe, a finished product acid tank, a dust remover, a dilute acid tank, a circulating acid pump, a concentrated acid tank, an acid liquid conveying pipeline and a graphite nozzle, wherein the sludge phosphorus combustion furnace, the graphite tower, the Venturi tube, the draft fan and the emptying pipe are communicated in sequence; the dust remover is arranged below the draft fan; the graphite nozzle is formed in the top of the graphite tower; the acid liquid conveying pipeline is communicated with the circulating acid pump and the graphite nozzle and is used for conveying a liquid in the dilute acid tank or the concentrated acid tank into the graphite tower; the dilute acid tank is communicated with the concentrated acid tank by virtue of the acid liquid conveying pipeline. According to the 70 phosphoric acid production device, sludge phosphorus flue gas can be completely absorbed, the utilization rate is very low, the occupied area of the whole set of production device is relatively small, only water steam is existent in discharged tail gas, and the environmental pollution is alleviated.
Description
Technical field
The utility model relates to phosphoric acid production field, is specifically related to a kind of 70 phosphoric acid production devices.
Background technology
Producing in the process of phosphoric acid, need to wash the tail gas producing on its production line, the one, in order to reach emission standard, the 2nd, recycle useful material in tail gas.And in Yellow Phosphorus Industry the production present stage of 70 phosphoric acid be mainly to carry out in Graphite Tower, traditional Graphite Tower is produced 70 phosphoric acid and is referred to after mud phosphorus burns in roasting kiln and produce Vanadium Pentoxide in FLAKES flue gas and water vapour, Vanadium Pentoxide in FLAKES flue gas and water vapour naturally absorb cooling generation 70 phosphoric acid in Graphite Tower, this mode of production causes Vanadium Pentoxide in FLAKES not absorb completely, be discharged in a large number and in atmosphere, cause environmental pollution, utilization ratio is also very low, process length consuming time.The passage that simultaneously needs graphite to form is longer, generally needs 5～6 graphite tower bodies, and a whole set of production equipment floor space is large.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of 70 phosphoric acid production devices, and this production equipment improves the utilization ratio of mud phosphorus, reduces environmental pollution.
In order to solve the problems of the technologies described above, the utility model is realized in the following manner:
A kind of 70 phosphoric acid production devices, comprise mud phosphorus roasting kiln, Graphite Tower, Venturi tube, induced draft fan, evacuated tube, finished product acid tank and fly-ash separator, described mud phosphorus roasting kiln, Graphite Tower, Venturi tube, induced draft fan and evacuated tube are connected successively, described fly-ash separator is positioned at induced draft fan below, wherein also comprise dilute acid bath, cyclic acid pump, concentrated acid groove, acid solution transport pipe and graphite nozzle, described graphite nozzle is positioned at graphite tower top inside, described acid solution transport pipe is connected with cyclic acid pump and graphite nozzle, for the liquid in dilute acid bath or concentrated acid groove is squeezed in Graphite Tower, between described dilute acid bath and concentrated acid groove, there is acid solution transport pipe to communicate.
The number of described Graphite Tower is 3, is respectively Graphite Tower I, Graphite Tower II and Graphite Tower III.
Preferably, the number of described graphite nozzle in Graphite Tower I, Graphite Tower II and Graphite Tower III is respectively 2.
Compared with prior art, the utlity model has following beneficial effect:
1) by the degree of depth of Vanadium Pentoxide in FLAKES flue gas is absorbed, mud phosphorus produces sour amount can increase by 20% on former basis, and equal mud phosphorus amount can be produced 200 tons of 70 phosphoric acid every year;
2) production equipment after improvement decreases to the mud phosphorus specification of quality using, in traditional production method requirement mud phosphorus, phosphorus content is more than 20%, can use now 5%～20% lean phosphorus mud production, like this lean phosphorus mud in yellow phosphorus circulatory pool is processed, solved the disposal difficulties of lean phosphorus mud;
3) by the circulation active absorption to Vanadium Pentoxide in FLAKES flue gas, production efficiency improves more than 2 times;
4) this device can, to the absorption completely of mud phosphorus flue gas, only have water vapour in the tail gas of discharge, has reduced environmental pollution.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure, each mark is respectively: 1, mud phosphorus roasting kiln, 21, Graphite Tower I, 22, Graphite Tower II, 23, Graphite Tower III, 3, dilute acid bath, 4, cyclic acid pump, 5, concentrated acid groove, 6, acid solution transport pipe, 7, graphite nozzle, 8, Venturi tube, 9, induced draft fan, 10, evacuated tube, 11, finished product acid tank, 12, fly-ash separator.
Embodiment
Below in conjunction with the drawings and specific embodiments, embodiment of the present utility model is described in further detail.
As shown in Figure 1, a kind of 70 phosphoric acid production devices, comprise mud phosphorus roasting kiln 1, Graphite Tower I21, Graphite Tower II22, Graphite Tower III23, dilute acid bath 3, cyclic acid pump 4, concentrated acid groove 5, acid solution transport pipe 6, graphite nozzle 7, Venturi tube 8, induced draft fan 9, evacuated tube 10, finished product acid tank 11 and fly-ash separator 12, described mud phosphorus roasting kiln 1, Graphite Tower I21, Graphite Tower II22, Graphite Tower III23, Venturi tube 8, induced draft fan 9 and evacuated tube 10 are connected successively, fly-ash separator 12 is positioned at induced draft fan 9 belows, described graphite nozzle 7 is positioned at graphite tower top inside, described acid solution transport pipe 6 is connected with cyclic acid pump 4 and graphite nozzle 7, for the liquid in dilute acid bath or concentrated acid groove is squeezed in Graphite Tower, between described dilute acid bath 3 and concentrated acid groove 5, there is acid solution transport pipe 6 to communicate.
Preferably, described graphite nozzle is respectively 2 in the number in Graphite Tower I, Graphite Tower II and Graphite Tower III.
The spontaneous combustion in mud phosphorus roasting kiln 1 of yellow phosphorus waste slag mud phosphorus generates Vanadium Pentoxide in FLAKES flue gas, enters Graphite Tower I21, Graphite Tower II22, Graphite Tower III23; Then the graphite nozzle 7 that the cyclic acid pump 4 in concentrated acid groove 5 is squeezed into Graphite Tower I and Graphite Tower II by the acid solution of content 30%～50% by acid solution transport pipe 6 forms acid mist, vaporific acid cycle absorbs Vanadium Pentoxide in FLAKES flue gas, until the acid in concentrated acid groove enters finished acid groove 11 after reaching 70% concentration; Residue flue gas enters Graphite Tower III23, the graphite nozzle 7 that cyclic acid pump 4 in dilute acid bath 3 is squeezed into Graphite Tower III by the diluted acid of content 10%～20% by acid solution transport pipe 6 forms acid mist, vaporific diluted acid circulation absorbs the few Vanadium Pentoxide in FLAKES flue gas of surplus, the acid solution forming in Graphite Tower III flows in dilute acid bath, after concentration reaches preset value, squeeze into concentrated acid groove by acid solution transport pipe, in concentrated acid groove, acid solution is by constantly circulation absorption, when concentration reaches requirement, squeeze into finished product acid tank and store.In Graphite Tower III, remaining gas is by Venturi tube dedusting, cooling, finally by induced draft fan, fly-ash separator and evacuated tube discharge.
The above is only embodiment of the present utility model; statement again; for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also carry out some improvement to the utility model, these improvement are also listed in the protection domain of the utility model claim.
Claims (3)
1. a phosphoric acid production device, comprise mud phosphorus roasting kiln (1), Graphite Tower, Venturi tube (8), induced draft fan (9), evacuated tube (10), finished product acid tank (11) and fly-ash separator (12), described mud phosphorus roasting kiln (1), Graphite Tower, Venturi tube (8), induced draft fan (9) and evacuated tube (10) are connected successively, described fly-ash separator (12) is positioned at induced draft fan (9) below, it is characterized in that: also comprise dilute acid bath (3), cyclic acid pump (4), concentrated acid groove (5), acid solution transport pipe (6) and graphite nozzle (7), described graphite nozzle (7) is positioned at graphite tower top inside, described acid solution transport pipe (6) is connected with cyclic acid pump (4) and graphite nozzle (7), for the liquid in dilute acid bath or concentrated acid groove is squeezed in Graphite Tower, between described dilute acid bath (3) and concentrated acid groove (5), there is acid solution transport pipe (6) to communicate.
2. a kind of 70 phosphoric acid production devices according to claim 1, is characterized in that: the number of described Graphite Tower is 3, are respectively Graphite Tower I (21), Graphite Tower II (22) and Graphite Tower III (23).
3. a kind of 70 phosphoric acid production devices according to claim 2, is characterized in that: the number of described graphite nozzle (7) in Graphite Tower I, Graphite Tower II and Graphite Tower III is respectively 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420204503.6U CN203807174U (en) | 2014-04-24 | 2014-04-24 | 70 phosphoric acid production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420204503.6U CN203807174U (en) | 2014-04-24 | 2014-04-24 | 70 phosphoric acid production device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203807174U true CN203807174U (en) | 2014-09-03 |
Family
ID=51445959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420204503.6U Expired - Lifetime CN203807174U (en) | 2014-04-24 | 2014-04-24 | 70 phosphoric acid production device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203807174U (en) |
-
2014
- 2014-04-24 CN CN201420204503.6U patent/CN203807174U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |
|
| CX01 | Expiry of patent term |