CN113184817A - Diluted phosphoric acid desulfurization production line and method for improving yield of industrial-grade monoammonium phosphate - Google Patents
Diluted phosphoric acid desulfurization production line and method for improving yield of industrial-grade monoammonium phosphate Download PDFInfo
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- CN113184817A CN113184817A CN202110530038.XA CN202110530038A CN113184817A CN 113184817 A CN113184817 A CN 113184817A CN 202110530038 A CN202110530038 A CN 202110530038A CN 113184817 A CN113184817 A CN 113184817A
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- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 title claims abstract description 66
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 title claims abstract description 35
- 235000019837 monoammonium phosphate Nutrition 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 239000006012 monoammonium phosphate Substances 0.000 title claims abstract description 34
- 229910000147 aluminium phosphate Inorganic materials 0.000 title claims abstract description 33
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 31
- 230000023556 desulfurization Effects 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004140 cleaning Methods 0.000 claims abstract description 56
- 238000006243 chemical reaction Methods 0.000 claims abstract description 55
- 230000007246 mechanism Effects 0.000 claims abstract description 53
- 239000002253 acid Substances 0.000 claims abstract description 51
- 239000000463 material Substances 0.000 claims abstract description 36
- 239000002002 slurry Substances 0.000 claims abstract description 22
- 238000005086 pumping Methods 0.000 claims abstract description 14
- 238000010408 sweeping Methods 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims description 83
- 238000003756 stirring Methods 0.000 claims description 51
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 8
- 239000013049 sediment Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 abstract description 7
- 239000012535 impurity Substances 0.000 abstract description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002244 precipitate Substances 0.000 abstract description 3
- 229910052717 sulfur Inorganic materials 0.000 abstract description 3
- 239000011593 sulfur Substances 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 22
- 239000000126 substance Substances 0.000 description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 244000309464 bull Species 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 241000282849 Ruminantia Species 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- PYCBFXMWPVRTCC-UHFFFAOYSA-N ammonium metaphosphate Chemical compound N.OP(=O)=O PYCBFXMWPVRTCC-UHFFFAOYSA-N 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- 239000003674 animal food additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/18—Phosphoric acid
- C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
- C01B25/222—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen
- C01B25/223—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen only one form of calcium sulfate being formed
- C01B25/225—Dihydrate process
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/28—Ammonium phosphates
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Abstract
The invention discloses a dilute phosphoric acid desulfurization production line and a method for improving the yield of industrial monoammonium phosphate, and the dilute phosphoric acid desulfurization production line comprises a raw ore pulp box, wherein a sweeping plate is arranged inside the raw ore pulp box; the ore pulp hose is arranged on one side of the cleaning threaded rod; an air hose provided at one side of the agitating bar; the material pumping hose is arranged on one side of the inflating hose, and one end of the material pumping hose is connected with a separating, metering and pumping mechanism; and the mud box is arranged below the reaction box. Compared with the existing device, the dilute phosphoric acid desulfurization production line and the method for improving the yield of industrial monoammonium phosphate can effectively apply pressure to the precipitated slurry through the threaded rotating rod in the slurry box, so that the discharging of the precipitate in the slurry box is facilitated, and the blocking condition is avoided; the method can recycle the reacted impurity mixture, improve the utilization rate, and improve the yield of the monoammonium phosphate by the dilute acid after sulfur removal.
Description
Technical Field
The invention relates to the technical field of monoammonium phosphate production, in particular to a dilute phosphoric acid desulfurization production line and a dilute phosphoric acid desulfurization production method for improving the yield of industrial monoammonium phosphate.
Background
Ammonium dihydrogen phosphate, a chemical preparation, also called monoammonium phosphate, is a white crystal, has a chemical formula of NH4H2PO4, can be decomposed into ammonium metaphosphate (NH4PO3) by heating, can be prepared by reacting ammonia water with phosphoric acid, is mainly used as a fire retardant for fertilizers, wood, paper and fabrics, and is also used as a feed additive for pharmacy and ruminants, the content of SO3 in phosphoric acid prepared by wet-process phosphoric acid is high, and in the production of industrial monoammonium phosphate, the excessive SO3 can influence ammonium phosphate crystallization, SO that the crystal is finer and smaller, and the yield and quality of industrial monoammonium phosphate are influenced. In order to ensure the improvement of the product quality and the yield of industrial grade monoammonium phosphate, a new production process flow is needed for the desulfurization of dilute phosphoric acid.
The existing acid liquor mixture is subjected to solid-liquid separation in a gravity settling mode, the process is slow, the efficiency is too low, the impurity mixture is too much after the reaction, the useful substances cannot be recycled, waste is easily caused, and the prepared substances are low in purity, so that the dilute phosphoric acid desulfurization production line and the method for improving the yield of industrial-grade monoammonium phosphate are provided.
Disclosure of Invention
The invention aims to provide a dilute phosphoric acid desulfurization production line and a method for improving the yield of industrial monoammonium phosphate, and aims to solve the problems that the existing acid liquid mixture is slow in process and low in efficiency in a gravity settling mode during solid-liquid separation, and the impurity mixture is too much after reaction, so that useful substances cannot be recycled, waste is easily caused, and the prepared substances are low in purity.
In order to achieve the purpose, the invention provides the following technical scheme: a dilute phosphoric acid desulfurization production line for improving the yield of industrial-grade monoammonium phosphate comprises:
the device comprises a raw ore pulp box, a cleaning plate and a cleaning device, wherein the cleaning plate is arranged inside the raw ore pulp box;
a cleaning threaded rod, the thread of which is arranged inside the cleaning plate;
the cleaning motor is connected to the upper end of the cleaning threaded rod;
the ore pulp hose is arranged on one side of the cleaning threaded rod;
the dilute acid box is arranged on one side of the raw slurry box, and the raw slurry box and the dilute acid box both comprise cleaning plates;
a dilute acid hose disposed inside the dilute acid tank;
the reaction box is arranged on one side of the dilute acid box;
a stirring rod disposed inside the reaction tank;
an air hose provided at one side of the agitating bar;
the material pumping hose is arranged on one side of the inflating hose, and one end of the material pumping hose is connected with a separating, metering and pumping mechanism;
a separation tank disposed at one side of the reaction tank;
and the mud box is arranged below the reaction box.
Preferably, the sweeping board is further provided with:
and the cleaning pad brush is sleeved on the outer surface of the cleaning plate.
Preferably, the pulp hose is further provided with:
and the ore pulp metering and extracting mechanism is connected to one end of the ore pulp hose.
Preferably, the dilute acid hose is further provided with:
and the dilute acid metering and extracting mechanism is connected to one end of the dilute acid hose.
Preferably, the stirring rod is further provided with:
the power output end of the stirring motor is connected below the stirring rod;
and the stirring bodies are symmetrically arranged on two sides of the stirring rod by taking the stirring rod as a central axis.
Preferably, the inflation hose is further provided with:
the gas metering and extracting mechanism is connected to one end of the inflating hose;
and the water-gas separation mechanism is connected to one end of the gas metering and extracting mechanism.
Preferably, the separation box is further provided with:
a separation lever provided inside the separation tank;
and the separating bodies are symmetrically arranged on two sides of the separating rod by taking the separating rod as a central axis.
Preferably, the separation rod is further provided with:
the power output end of the separation motor is connected above the separation rod;
the separation bracket is movably connected below the separation rod through a bearing;
a heating rod installed on top of the separation bracket;
and the baffle plate is welded at the bottom of the separation bracket, and a mud outlet groove is formed in a gap between the outer edge of the baffle plate and the inner wall of the separation box.
Preferably, the mud tank is further provided with:
the threaded rotating rod is arranged inside the mud tank;
the power output end of the force application motor is connected with one end of the threaded rotating rod;
and the outlet support is connected to the other end of the threaded rotating rod.
Preferably, the use method of the dilute phosphoric acid desulfurization production line for improving the yield of industrial-grade monoammonium phosphate comprises the following steps:
s1: starting an ore pulp metering and extracting mechanism to enable a raw ore pulp box to penetrate materials into the reaction box through an ore pulp hose, and simultaneously starting a dilute acid metering and extracting mechanism to enable a dilute acid box to penetrate materials into the reaction box through a dilute acid hose;
s2: starting a stirring motor, and enabling the stirring motor to drive a stirring rod to perform mixing stirring reaction on the materials in the reaction box;
s3: starting a separation metering and extracting mechanism, enabling the reaction box to penetrate materials into the separation box through a material extracting hose, starting a separation motor, and enabling the separation motor to drive a separation rod to rotate to perform solid-liquid separation on the materials;
s4: starting a force application motor, driving a threaded rotating rod to rotate by the force application motor to extrude and discharge the sediment in the slurry box, and enabling the sediment to enter the reaction box again through a pipeline;
s5: and starting the heating rod to heat the object in the separation box, and simultaneously starting the gas metering and extracting mechanism to ensure that the gas generated in the separation box is reintroduced into the reaction box through the gas-water separation mechanism through the inflating hose.
Compared with the prior art, the invention provides a dilute phosphoric acid desulfurization production line and a method for improving the yield of industrial monoammonium phosphate, and the dilute phosphoric acid desulfurization production line and the method have the following beneficial effects: by the method, the concentration of excessive SO3 in the dilute phosphoric acid is reduced to 20-30g/L from the original 40-45g/L, and the desulfurization rate can reach more than 50%; the reduction in SO3 increased the production of technical grade monoammonium phosphate by 10 tons/day, with a annual growth of about 2500 tons.
1. The cleaning plate can be powered by the cleaning threaded rod to move up and down, so that automatic cleaning is realized, the cleaning efficiency is improved, the cleaning threaded rod can enable the cleaning plate to move more stably, and the cleaning plate can be used for bearing the sundries in the raw ore pulp box and the dilute acid box, so that the sundries can be conveniently cleaned;
2. the ore pulp metering and extracting mechanism can accurately meter and extract the materials in the raw ore pulp box, so that the use is convenient; the object in the dilute acid box can be accurately measured and extracted through the dilute acid measuring and extracting mechanism, so that the use is convenient;
3. the stirring rod can be driven to rotate by the arranged stirring motor, so that the stirring rod drives mixed materials in the reaction box to stir, full mixing reaction is carried out, and the reaction quality and efficiency are improved; the gas can be accurately metered and extracted through the arranged gas metering and extracting mechanism, so that the gas is accurately controlled and is convenient to use, and the arranged water-gas separating mechanism can effectively separate water vapor in the gas, so that the condition of mixed reaction is avoided;
4. the separation rod in the separation box can drive the animal to rotate, and the inverted trapezoidal box body can separate solid from liquid of different heavy sulfide-containing slurry under the action of centrifugal force, so that the efficiency is improved, and the wall of the inclined box is convenient to guide and collect; the object in the separation box can be heated through the arranged heating rod, the object is sublimated by 50 degrees by utilizing the physical characteristics of sulfur trioxide, the sulfur trioxide is collected by the collection device above the object, the sulfur trioxide is further desulfurized, and the collected sulfur trioxide is changed into sulfuric acid to continue reacting when being introduced into the reaction box and meeting water;
5. the deposited slurry can be effectively pressed through the threaded rotating rod in the slurry box, so that the deposited precipitates in the slurry box can be conveniently discharged, and the blockage condition is avoided; the method can recycle the reacted impurity mixture, improve the utilization rate, and improve the yield of the monoammonium phosphate by the dilute acid after sulfur removal.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic top view of the raw slurry tank of the present invention;
FIG. 3 is a schematic view of the interior of the separator tank of the present invention viewed from above;
FIG. 4 is a schematic view showing the front structure of the inside of the mud tank of the present invention.
In the figure: 1. a raw ore pulp tank; 2. cleaning the threaded rod; 3. cleaning the board; 4. a cleaning pad brush; 5. a pulp hose; 6. a pulp metering and extracting mechanism; 7. a dilute acid tank; 8. a dilute acid hose; 9. a dilute acid metering and extracting mechanism; 10. a reaction box; 11. a stirring rod; 12. a stirring motor; 13. a stirring body; 14. an inflation hose; 15. a gas metering and extracting mechanism; 16. a water-gas separation mechanism; 17. a material pumping hose; 18. a separation metering extraction mechanism; 19. a separation tank; 20. a separating lever; 21. a separator; 22. separating the motor; 23. separating the bracket; 24. a heating rod; 25. a baffle plate; 26. a mud tank; 27. a threaded rotating rod; 28. a force application motor.
Detailed Description
Referring to fig. 1-4, the present invention provides a technical solution: a dilute phosphoric acid desulfurization production line for improving the yield of industrial-grade monoammonium phosphate comprises:
the device comprises a raw ore pulp box 1, wherein a cleaning plate 3 is arranged inside the raw ore pulp box 1;
a cleaning threaded rod 2 with threads in the cleaning plate 3
A cleaning motor connected to the upper end of the cleaning threaded rod 2;
a pulp hose 5 provided on one side of the cleaning threaded rod 2;
the dilute acid tank 7 is arranged on one side of the raw slurry tank 1, and the raw slurry tank 1 and the dilute acid tank 7 both comprise a cleaning plate 3;
a dilute acid hose 8 disposed inside the dilute acid tank 7;
a reaction tank 10 provided on one side of the dilute acid tank 7;
a stirring rod 11 inside the reaction chamber 10;
an air hose 14 provided at one side of the agitating bar 11;
a material pumping hose 17 arranged at one side of the air inflation hose 14, wherein one end of the material pumping hose 17 is connected with a separation metering pumping mechanism 18;
a separation tank 19 provided at one side of the reaction tank 10;
and a mud tank 26 disposed below the reaction tank 10.
The sweeping board 3 is also provided with:
a cleaning pad brush 4 sleeved on the outer surface of the cleaning plate 3; clean threaded rod 2 through the setting and can provide power to cleaning board 3 and let it reciprocate to form self-cleaning, the threaded rod 2 that cleans that improves clean efficiency and set up can let the more stable that cleans board 3 and remove, clean board 3 through the setting and can accept the miscellaneous material of former ore pulp case 1 and diluted acid case 7 inside, thereby the convenient clearance to miscellaneous material, and clean through the cleaning that sets up pad brush 4 can carry out effective friction to the incasement wall and clean, the convenience is to the cleanness of inner wall.
The ore pulp hose 5 is also provided with:
the ore pulp metering and extracting mechanism 6 is connected to one end of the ore pulp hose 5; through the ore pulp measurement extraction mechanism 6 that sets up can carry out accurate measurement extraction convenience to the material of raw ore pulp case 1 inside.
The dilute acid hose 8 is also provided with:
the dilute acid metering and extracting mechanism 9 is connected to one end of the dilute acid hose 8; the dilute acid metering and extracting mechanism 9 can accurately meter and extract the objects in the dilute acid tank 7, so that the use is convenient.
The stirring rod 11 is further provided with:
the power output end of the stirring motor 12 is connected below the stirring rod 11;
the stirring bodies 13 are symmetrically arranged on two sides of the stirring rod 11 by taking the stirring rod 11 as a central axis; stirring motor 12 that sets up can drive puddler 11 and rotate to let its mixed material that drives the inside of reaction box 10 stir, carry out the intensive mixing reaction, improve reaction quality and efficiency.
The air hose 14 is also provided with:
a gas metering and extracting mechanism 15 connected to one end of the air hose 14;
a water-gas separation mechanism 16 connected to one end of the gas metering and extracting mechanism 15; gas can be accurately metered and extracted through the gas metering and extracting mechanism 15 which is arranged, so that the gas can be accurately controlled and conveniently used, the water-gas separation mechanism 16 which is arranged can effectively separate the water vapor inside the gas, and the mixed reaction condition is avoided.
The separator tank 19 is also provided with:
a separation lever 20 provided inside the separation tank 19;
separating bodies 21 symmetrically disposed on both sides of the separating rod 20 with the separating rod 20 as a central axis; the separation box 19 can be used for driving an object to rotate by the separation rod 20 inside the separation box, the inverted trapezoidal box body can be used for performing solid-liquid separation on different heavy sulfide-containing slurry under the action of centrifugal force, the efficiency is improved, and the inclined plane box wall is convenient to guide and collect.
The separation rod 20 is further provided with:
a separating motor 22, the power output end of which is connected above the separating rod 20;
a separation bracket 23 movably connected below the separation rod 20 through a bearing;
a heating rod 24 installed on the top of the separation bracket 23;
the baffle 25 is welded at the bottom of the separation bracket 23, and a sludge outlet groove is formed in a gap between the outer edge of the baffle 25 and the inner wall of the separation box 19; can heat the inside object of separator box 19 through the heating rod 24 that sets up, utilize sulfur trioxide's physical characteristic, 50 sublimes, and its top is collected sulfur trioxide through collection device, further carries out the desulfurization, and the sulfur trioxide after collecting meets water through leading-in reaction box 10 and becomes sulfuric acid and continue to react.
The mud tank 26 is also provided with:
a screw 27 provided inside the mud tank 26;
a force application motor 28, the power output end of which is connected with one end of the threaded rotating rod 27;
the exit support, its other end at screw thread bull stick 27 can effectively exert pressure to the mud that deposits through the inside screw thread bull stick 27 of mud case 26 to make things convenient for the ejection of compact of the inside precipitate of mud case 26, avoid the condition of jam.
The use method of the dilute phosphoric acid desulfurization production line for improving the yield of industrial-grade monoammonium phosphate comprises the following steps:
s1: starting an ore pulp metering and extracting mechanism 6 to enable a raw ore pulp box 1 to penetrate materials into a reaction box 10 through an ore pulp hose 5, and simultaneously starting a dilute acid metering and extracting mechanism 9 to enable a dilute acid box 7 to penetrate materials into the reaction box 10 through a dilute acid hose 8;
s2: starting the stirring motor 12, and enabling the stirring motor 12 to drive the stirring rod 11 to perform mixing and stirring reaction on the materials in the reaction box 10;
s3: starting a separation metering and extracting mechanism 18 to enable the reaction box 10 to penetrate materials into a separation box 19 through a material extracting hose 17, and starting a separation motor 22 to enable the separation motor 22 to drive a separation rod 20 to rotate to perform solid-liquid separation on the materials;
s4: starting the force application motor 28, enabling the force application motor 28 to drive the threaded rotating rod 27 to rotate to extrude and discharge the sediment in the slurry tank 26, and enabling the sediment to enter the reaction tank 10 again through the pipeline;
s5: starting the heating rod 24, enabling the heating rod 24 to heat the object in the separation box 19, and simultaneously starting the gas metering and extracting mechanism 15, and enabling the gas generated in the separation box 19 to be reintroduced into the reaction box 10 through the inflation hose 14 and the water-gas separation mechanism 16; the method can recycle the reacted impurity mixture, improve the utilization rate, and improve the yield of the monoammonium phosphate by the dilute acid after sulfur removal.
The working principle is as follows: when the dilute phosphoric acid desulfurization production line and the method for improving the yield of industrial monoammonium phosphate are used, firstly, the ore pulp metering and extracting mechanism 6 and the dilute acid metering and extracting mechanism 9 are simultaneously started, so that substances in the raw ore pulp tank 1 and the dilute acid tank 7 respectively enter the reaction tank 10 through the ore pulp hose 5 and the dilute acid hose 8, the dilute acid tank 7 adopts ceramic materials for storing materials to avoid corrosion, then the stirring motor 12 is started, the stirring rod 11 is in pin joint with the stirring motor 12, the stirring rod 11 starts to rotate, the stirring body 13 is in threaded connection with the stirring rod 11, the stirring body 13 starts to rotate and drives surrounding objects to rotate and stir, after the stirring reaction is completed, the separation metering and extracting mechanism 18 is started, so that the substances in the reaction tank 10 enter the separation tank 19 through the material pumping hose 17, then the separation motor 22 is started, the separation rod 20 is in pin joint with the separation motor 22, the separating rod 20 generates acting force, the separating rod 20 is movably connected with the separating bracket 23 through a bearing, the separating rod 20 rotates under the force, the separating body 21 is in threaded connection with the separating rod 20, the separating body 21 rotates and drives objects in the reaction box 10 to rotate, substances in the separating box 19 are separated under the action of centrifugal force, the substances with large mass slide down through the inner wall, enter the slurry box 26 through a slurry outlet groove formed by the baffle 25 and the inner wall of the separating box 19, after the separation is finished, the heating rod 24 is electrified, the temperature of the substances in the separating box 19 rises, the gas moves upwards, the gas metering and extracting mechanism 15 is started, the gas in the separating box 19 enters the water-gas separating mechanism 16 through the inflating hose 14 and then enters the reaction box 10 for re-reaction, then the force application motor 28 is started, the threaded rotating rod 27 is in pin connection with the force application motor 28, the screw rotating rod 27 generates acting force, the screw rotating rod 27 is movably connected with the outlet support, SO that the screw rotating rod 27 rotates under the action of the acting force, the rotating screw rotating rod 27 can apply pressure to the precipitated mud to enable the precipitated mud to enter the reaction box 10 again through a pipeline, when the raw slurry box 1 needs to be cleaned, the cleaning motor is started, the cleaning plate 3 is in threaded connection with the cleaning threaded rod 2, the cleaning threaded rod 2 is in pin connection with the cleaning motor, the cleaning threaded rod 2 rotates, SO that the rotating cleaning threaded rod 2 can generate acting force to the cleaning plate 3 to enable the cleaning plate 3 to move, and the cleaning plate 3 drives the sleeved cleaning pad brush 4 to move, the chemical reaction equation of the process is that Ca5F (PO4)3+5H2SO4+10H2O ═ 3H3PO4+5CaSO4 · 2H2O + HF, the inner wall of a mechanism in contact with corrosive materials is coated with an anticorrosive coating, and the anticorrosive coating such as a ceramic coating is not provided in the prior art, the working principle of the dilute phosphoric acid desulfurization production line and the method for improving the yield of industrial-grade monoammonium phosphate is shown.
Claims (10)
1. The utility model provides an improve dilute phosphoric acid desulfurization production line of industrial grade monoammonium phosphate output which characterized in that includes:
the device comprises a raw ore pulp box, a cleaning plate and a cleaning device, wherein the cleaning plate is arranged inside the raw ore pulp box;
a cleaning threaded rod, the thread of which is arranged inside the cleaning plate;
the connecting and cleaning motor is connected to the upper end of the cleaning threaded rod;
the ore pulp hose is arranged on one side of the cleaning threaded rod;
the dilute acid box is arranged on one side of the raw slurry box, and the raw slurry box and the dilute acid box both comprise cleaning plates;
a dilute acid hose disposed inside the dilute acid tank;
the reaction box is arranged on one side of the dilute acid box;
a stirring rod disposed inside the reaction tank;
an air hose provided at one side of the agitating bar;
the material pumping hose is arranged on one side of the inflating hose, and one end of the material pumping hose is connected with a separating, metering and pumping mechanism;
a separation tank disposed at one side of the reaction tank;
and the mud box is arranged below the reaction box.
2. The diluted phosphoric acid desulfurization production line for increasing the yield of industrial-grade monoammonium phosphate according to claim 1, wherein the sweeping plate is further provided with:
and the cleaning pad brush is sleeved on the outer surface of the cleaning plate.
3. The diluted phosphoric acid desulfurization production line for increasing the production of industrial-grade monoammonium phosphate according to claim 1, wherein the pulp hose is further provided with:
and the ore pulp metering and extracting mechanism is connected to one end of the ore pulp hose.
4. The dilute phosphoric acid desulfurization production line for increasing the yield of industrial-grade monoammonium phosphate according to claim 1, characterized in that: the diluted acid hose is also provided with:
and the dilute acid metering and extracting mechanism is connected to one end of the dilute acid hose.
5. The diluted phosphoric acid desulfurization production line for increasing the yield of industrial-grade monoammonium phosphate according to claim 1, wherein the stirring rod is further provided with:
the power output end of the stirring motor is connected below the stirring rod;
and the stirring bodies are symmetrically arranged on two sides of the stirring rod by taking the stirring rod as a central axis.
6. The diluted phosphoric acid desulfurization production line for increasing the yield of industrial-grade monoammonium phosphate according to claim 1, wherein the air inflation hose is further provided with:
the gas metering and extracting mechanism is connected to one end of the inflating hose;
and the water-gas separation mechanism is connected to one end of the gas metering and extracting mechanism.
7. The diluted phosphoric acid desulfurization production line for increasing the yield of industrial-grade monoammonium phosphate according to claim 1, wherein the separation tank is further provided with:
a separation lever provided inside the separation tank;
and the separating bodies are symmetrically arranged on two sides of the separating rod by taking the separating rod as a central axis.
8. The diluted phosphoric acid desulfurization production line for increasing the yield of industrial-grade monoammonium phosphate according to claim 7, wherein the separation rod is further provided with:
the power output end of the separation motor is connected above the separation rod;
the separation bracket is movably connected below the separation rod through a bearing;
a heating rod installed on top of the separation bracket;
and the baffle plate is welded at the bottom of the separation bracket, and a mud outlet groove is formed in a gap between the outer edge of the baffle plate and the inner wall of the separation box.
9. The diluted phosphoric acid desulfurization production line for increasing the yield of industrial-grade monoammonium phosphate according to claim 1, wherein the slurry tank is further provided with:
the threaded rotating rod is arranged inside the mud tank;
the power output end of the force application motor is connected with one end of the threaded rotating rod;
and the outlet support is connected to the other end of the threaded rotating rod.
10. The dilute phosphoric acid desulfurization production line for increasing the production of industrial grade monoammonium phosphate according to any one of claims 1-9, characterized in that: the use method of the dilute phosphoric acid desulfurization production line for improving the yield of industrial-grade monoammonium phosphate comprises the following steps:
s1: starting an ore pulp metering and extracting mechanism to enable a raw ore pulp box to penetrate materials into the reaction box through an ore pulp hose, and simultaneously starting a dilute acid metering and extracting mechanism to enable a dilute acid box to penetrate materials into the reaction box through a dilute acid hose;
s2: starting a stirring motor, and enabling the stirring motor to drive a stirring rod to perform mixing stirring reaction on the materials in the reaction box;
s3: starting a separation metering and extracting mechanism, enabling the reaction box to penetrate materials into the separation box through a material extracting hose, starting a separation motor, and enabling the separation motor to drive a separation rod to rotate to perform solid-liquid separation on the materials;
s4: starting a force application motor, driving a threaded rotating rod to rotate by the force application motor to extrude and discharge the sediment in the slurry box, and enabling the sediment to enter the reaction box again through a pipeline;
s5: and starting the heating rod to heat the object in the separation box, and simultaneously starting the gas metering and extracting mechanism to ensure that the gas generated in the separation box is reintroduced into the reaction box through the gas-water separation mechanism through the inflating hose.
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