CN218249420U - Phosphoric acid absorption tower - Google Patents
Phosphoric acid absorption tower Download PDFInfo
- Publication number
- CN218249420U CN218249420U CN202222306720.3U CN202222306720U CN218249420U CN 218249420 U CN218249420 U CN 218249420U CN 202222306720 U CN202222306720 U CN 202222306720U CN 218249420 U CN218249420 U CN 218249420U
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- phosphoric acid
- absorption tower
- demister
- absorption
- equipment
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Abstract
A phosphoric acid absorption tower comprises an absorption tower cylinder body, wherein a phosphoric acid outlet and a phosphoric acid outlet P are sequentially arranged in the absorption tower cylinder body from bottom to top 2 O 5 Gas inlet, multistage shower, demister and gas outlet, the demister is the silk screen demister, and the silk screen demister intussuseption is filled with and removes the foam filler. Compared with the prior art, the phosphoric acid absorption tower of the utility model is provided with the multi-stage spray pipes, each spray pipe is provided with the special atomizing nozzle to ensure the sufficient absorption of P2O5 gas,the foam remover is arranged in the tower body, so that equipment additionally provided with a foam removing process is eliminated, the equipment and the production flow are simplified, and particularly, the process equipment for absorbing phosphoric acid is simplified, and the original secondary absorption equipment is improved into primary absorption equipment; the spray absorption tower is adopted to replace a packing absorption tower, the absorption efficiency is improved by 20 percent, and meanwhile, the production and maintenance cost is reduced.
Description
Technical Field
The utility model relates to a chemical industry equipment technical field, in particular to phosphoric acid absorption tower.
Background
In the preparation of phosphoric acid, a packed absorption tower is mostly adopted to wash gas containing P2O5 to prepare phosphoric acid, although the contact time of P2O5 gas and water can be improved to a certain extent, the packing can cause blockage during long-time production, the preparation efficiency of phosphoric acid is reduced, the packing needs to be replaced regularly, and the production and maintenance cost is increased.
SUMMERY OF THE UTILITY MODEL
To prior art exist above defect, the utility model provides a phosphoric acid absorption tower as follows:
the technical scheme of the utility model is realized like this:
a phosphoric acid absorption tower comprises an absorption tower cylinder body, wherein a phosphoric acid outlet and a phosphoric acid outlet P are sequentially arranged in the absorption tower cylinder body from bottom to top 2 O 5 Gas inlet, multistage shower, demister and gas outlet, the demister is the silk screen demister, and the silk screen demister intussuseption is filled with and removes the foam filler.
Preferably, the silk screen demister includes the corrugated vapour-liquid filter screen, the inside distance tube that is used for adjusting the filter screen size that is provided with of corrugated vapour-liquid filter screen, the two sides all is connected fixedly through the support mounting about the corrugated vapour-liquid filter screen.
Preferably, the multistage spray pipes comprise a first-stage spray pipe, a second-stage spray pipe and a third-stage spray pipe which are arranged from bottom to top, wherein the end heads of the spray pipes at all stages are provided with integrated atomizing nozzles.
Preferably, the integrated atomizing nozzle comprises a connecting piece and a spraying body which are integrally manufactured, the connecting piece is used for connecting the end heads of all levels of spraying pipes, the spraying body is in a spiral open type, and the spraying body is in a conical shape.
Preferably, the absorption tower cylinder is further provided with a sight glass, a manhole and an ear seat respectively.
Compared with the prior art, the utility model discloses there is following beneficial effect:
the utility model discloses a phosphoric acid absorption tower sets up multistage shower, and each shower all is equipped with special atomizing nozzle and has guaranteed the abundant absorption of P2O5 gas, and the tower body is inside to set up the demister, has abandoned the equipment that additionally increases the defoaming process, has simplified equipment and production procedure, specifically for absorbing phosphoric acid process equipment simplification, improves into the primary absorption equipment by original second grade absorption equipment; the spray absorption tower is adopted to replace a packing absorption tower, the absorption efficiency is improved by 20 percent, and meanwhile, the production and maintenance cost is reduced.
Drawings
FIG. 1 is a schematic view of the phosphoric acid absorption tower of the present invention;
FIG. 2 is a schematic structural view of the corrugated vapor-liquid filter screen of the present invention;
fig. 3 is a schematic structural view of the corrugated vapor-liquid filter screen of the present invention.
In the figure: a barrel body 1 of the absorption tower, a phosphoric acid outlet 2, P 2 O 5 The device comprises a gas inlet 3, a demister 4, a corrugated gas-liquid filter screen 4-1, a distance tube 4-2, a supporting and fixing piece 4-3, a gas outlet 5, a primary spray pipe 6, a secondary spray pipe 7, a tertiary spray pipe 8, an integrated atomizing nozzle 9, a connecting piece 9-1, a spray body 9-2, a sight glass 10, a manhole 11 and an ear seat 12.
Detailed Description
The present invention will be described more fully and clearly with reference to the accompanying drawings, which are incorporated in and constitute a part of this specification.
As shown in fig. 1, 2 and 3, the phosphoric acid absorption tower comprises an absorption tower cylinder 1, wherein phosphoric acid outlets 2 and P are sequentially arranged in the absorption tower cylinder 1 from bottom to top 2 O 5 The device comprises a gas inlet 3, a multistage spray pipe, a demister 4 and a gas outlet 5, wherein the demister 4 is a wire mesh demister, defoaming fillers are filled in the wire mesh demister, the wire mesh demister 4 comprises a corrugated vapor-liquid filter screen 4-1, a distance pipe 4-2 for adjusting the size of the filter screen is arranged inside the corrugated vapor-liquid filter screen 4-1, and the upper surface and the lower surface of the corrugated vapor-liquid filter screen 4-1 are fixedly connected through a supporting fixing piece 4-3. The multi-stage spray pipe comprises a first-stage spray pipe 6, a second-stage spray pipe 7 and a third-stage spray pipe 8 which are arranged from bottom to top, wherein the end heads of the spray pipes at all stages are provided with integrated atomizing nozzles 9. The integrated atomizing nozzle 9 comprises an integrated connecting piece 9-1 andthe spray body 9-2, the connecting piece 9-1 is used for connecting the end heads of all levels of spray pipes, the spray body 9-2 is in a spiral open type, and the spray body 9-2 is in a conical shape. The absorption tower cylinder body 1 is also respectively provided with a sight glass 10, a manhole 11 and an ear seat 12; the absorption tower cylinder 1 is a glass fiber reinforced plastic cylinder.
The production process comprises the following steps:
the phosphoric acid absorption tower adopts the contact counterflow type, and the gas containing P2O5 is from the lower part P of the tower body 2 O 5 The gas inlet 3 enters the purification tower, is quickly filled with the space of the gas inlet section under the power action of the fan, then uniformly rises to the first-stage spraying section, the absorption liquid is sprayed downwards from the nozzle at high speed to form countless fine fog drops, the downward-moving fog drops of the absorption liquid are fully mixed with the upward-moving gas to be in contact with the upward-moving gas to generate chemical reaction, the generated low-concentration liquid phosphoric acid is discharged from the phosphoric acid outlet 2 and enters the phosphoric acid temporary storage tank, and the unabsorbed gas rises to the second-stage and third-stage spraying sections to carry out the absorption process similar to the first stage. The phosphoric acid in the phosphoric acid temporary storage tank is pumped into a multistage spray pipe through a delivery pump, the low-concentration phosphoric acid continuously reacts with new gas through spraying to be absorbed, and the low-concentration phosphoric acid is continuously circularly absorbed until the high-concentration phosphoric acid reaches the qualified value and then is discharged through the pump. The pressure of each spray section in the absorption process is different, the absorption range is also different, and the sufficiency and the stability of the absorption process are ensured by adjusting the gas flow to control the empty tower flow speed and the detention time. The top of the tower body is a demister which is provided with defoaming filler, and absorption liquid fog drops in the gas are removed. The treated clean air is discharged from the upper end of the conversion tower.
According to the structure and the production process of the utility model, the phosphoric acid absorption tower is provided with the multi-stage spray pipes, each spray pipe is provided with the special atomizing nozzle to ensure the sufficient absorption of P2O5 gas, the foam remover is arranged in the tower body, the equipment additionally increasing the foam removing process is abandoned, the equipment and the production flow are simplified, in particular, the process equipment for absorbing phosphoric acid is simplified, and the original secondary absorption equipment is improved into the primary absorption equipment; the spray absorption tower is adopted to replace a packing absorption tower, the absorption efficiency is improved by 20 percent, and meanwhile, the production and maintenance cost is reduced.
Claims (5)
1. The phosphoric acid absorption tower comprises an absorption tower cylinder body and is characterized in that a phosphoric acid outlet and a phosphoric acid outlet P are sequentially arranged in the absorption tower cylinder body from bottom to top 2 O 5 Gas inlet, multistage shower, demister and gas outlet, the demister is the silk screen demister, and the silk screen demister intussuseption is filled with and removes the foam and packs.
2. The phosphoric acid absorbing tower as claimed in claim 1, wherein the wire mesh demister comprises a corrugated vapor-liquid filter screen, a distance tube for adjusting the size of the filter screen is arranged inside the corrugated vapor-liquid filter screen, and the upper and lower surfaces of the corrugated vapor-liquid filter screen are connected and fixed by a support fixing member.
3. The phosphoric acid absorption tower as claimed in claim 2, wherein the multi-stage showers comprise a first stage shower, a second stage shower and a third stage shower from bottom to top, wherein the end of each stage shower is provided with an integrated atomizing nozzle.
4. The phosphoric acid absorption tower as claimed in claim 3, wherein the integrated atomizing nozzle comprises a connecting member for connecting the tips of the stages of the spray pipes and a spray body which is spirally open and has a tapered shape, which are integrally formed.
5. The phosphoric acid absorption column as claimed in claim 1, wherein the absorption column body is further provided with a sight glass, a manhole and an ear seat, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222306720.3U CN218249420U (en) | 2022-08-30 | 2022-08-30 | Phosphoric acid absorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222306720.3U CN218249420U (en) | 2022-08-30 | 2022-08-30 | Phosphoric acid absorption tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218249420U true CN218249420U (en) | 2023-01-10 |
Family
ID=84709812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222306720.3U Active CN218249420U (en) | 2022-08-30 | 2022-08-30 | Phosphoric acid absorption tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218249420U (en) |
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2022
- 2022-08-30 CN CN202222306720.3U patent/CN218249420U/en active Active
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