CN212523633U

CN212523633U - Tail gas treatment device is used in production of fodder level calcium hydrogen phosphate

Info

Publication number: CN212523633U
Application number: CN202020561709.XU
Authority: CN
Inventors: 曾宪珠
Original assignee: Hubei Chuxiang Chemical Industry Co ltd
Current assignee: Hubei Chuxiang Chemical Industry Co ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2021-02-12
Anticipated expiration: 2030-04-16

Abstract

The utility model discloses a tail gas processing apparatus is used in production of fodder level calcium hydrogen phosphate, the air inlet has been seted up to the lateral part of tower body, has seted up the mud discharging mouth in the lower part of tower body, and there is the valve in the mud discharging mouth department intercommunication of tower body, has seted up the tail at the top of tower body and has seted up the mouth, the shower is fixed to wear to put in the tower body that is located the air inlet top, the water inlet and the tower body of water pump are inside to be linked together under, and the delivery port and the shower of water pump are linked together, are provided with the rotatory nozzle in bank on the shower, defroster fixed mounting is in the tower body that is located the shower top, oxidation rabbling mechanism is including casing, body, sealed pad, sealing filler, motor and connector, casing fixed mounting is on the tower body lateral wall that: the spraying range of the alkali liquor is improved, and the contact area of the alkali liquor and the tail gas is increased, so that the tail gas desulfurization treatment effect is improved.

Description

Tail gas treatment device is used in production of fodder level calcium hydrogen phosphate

Technical Field

The utility model relates to a technical field of tail gas processing apparatus, more specifically say so and relate to tail gas desulfurization processing apparatus's technical field.

Background

Feed grade calcium hydrogen phosphate is commonly used as a supplement of phosphorus and calcium in feed processing, and is one of the best feed mineral additives recognized at home and abroad at present because the phosphorus-calcium ratio is closest to that in animal bones and can be completely dissolved in animal gastric acid. At present, the process route of feed-grade calcium hydrophosphate is generally as follows: the method comprises the steps of performing reaction extraction on sulfuric acid and ground phosphate rock to generate crude phosphoric acid, performing neutralization reaction on the crude phosphoric acid and calcium carbonate to prepare fertilizer-grade calcium hydrophosphate, removing impurities from the crude phosphoric acid to prepare refined phosphoric acid, performing neutralization reaction on the refined phosphoric acid and lime milk to prepare feed-grade wet calcium hydrophosphate, crushing and drying the feed-grade wet calcium hydrophosphate to prepare powdery feed-grade calcium hydrophosphate. Feed-grade calcium hydrogen phosphate can produce the tail gas that contains sulfur dioxide etc. and contain sulphur harmful gas in process of production, consequently need carry out desulfurization treatment to tail gas through the desulfurizing tower, can produce by-products such as calcium sulfate in the tail gas treatment process. However, the common desulfurizing tower used in the current production of calcium hydrogen phosphate is not ideal in the desulfurizing effect of tail gas, so that the tail gas treatment effect is influenced, and the production efficiency and the quality of the by-products of the tail gas treatment such as calcium sulfate are not ideal.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above-mentioned insufficiency and providing a tail gas processing device for feed grade calcium hydrogen phosphate production that has fine tail gas treatment effect to can improve production efficiency and tail gas treatment accessory substance quality.

The utility model discloses a solve above-mentioned technical problem and the technical solution who adopts as follows:

tail gas processing apparatus is used in production of fodder level calcium hydrogen phosphate, it includes tower body, shower, water pump, defroster, oxidation rabbling mechanism and high-pressure air-blower the air inlet has been seted up to the lateral part of tower body, has seted up row's thick liquid mouth in the lower part of tower body, and row's thick liquid mouth department intercommunication at the tower body has the valve, has seted up the tail row mouth at the top of tower body, the shower is fixed to be worn to put in the tower body that is located the air inlet top, the water inlet of water pump and tower body inside are linked together down, and the delivery port and the shower of water pump are linked together, are provided with the rotatory nozzle in a row on the shower, defroster fixed mounting is in the tower body that is located the shower top, oxidation rabbling mechanism is including casing, body, sealed pad, sealing filler, motor and connector, casing fixed mounting is on the tower body lateral wall that is located the, the high-pressure air blower comprises a casing, a pipe body, a sealing filler, a hollow stirring rod, a connecting sleeve, a connector and a high-pressure air blower, wherein the pipe body is movably installed in the casing, the sealing filler is clamped in the casing, the sealing filler is tightly sleeved outside the pipe body, the pipe body penetrates through the tower body, the hollow stirring rod communicated with the pipe body is arranged on the pipe body in the tower body, an air hole is formed in the hollow stirring rod, a gear ring is arranged on the pipe body, the motor is fixedly installed on the casing, a gear is arranged on an output shaft of the motor and meshed with the gear ring, the connecting sleeve is arranged at the end part of the pipe body, the connector is fixedly installed on the casing through a support, the.

The rotary spray head comprises a shell, a hollow core shaft, a ring sleeve, paired first radial bearings, paired thrust bearings, a first sealing ring and a spray head body, wherein rows of liquid discharge ports are formed in the spray pipe, the shell is fixedly arranged at the liquid discharge port of the spray pipe, the hollow core shaft is movably inserted into the shell, a first annular limiting plate is arranged on the hollow core shaft, the paired thrust bearings are arranged in the shell, the paired thrust bearings are respectively sleeved outside the hollow core shaft and positioned at the upper side and the lower side of the first annular limiting plate, the paired first radial bearings are arranged in the shell, the paired first radial bearings are respectively sleeved outside the hollow core shaft, the ring sleeve is clamped in the shell, the ring sleeve is positioned between the paired first radial bearings, and a first annular groove is formed in the outer peripheral wall of the hollow core shaft above the thrust bearings, the first sealing ring is clamped in the first annular groove and is in contact with the inner wall of the shell, the upper portion of the shell is provided with a pore passage communicated with the liquid discharge port and the hollow mandrel, the lower end portion of the hollow mandrel penetrates out of the shell, the spray head body is fixedly installed on the lower end portion of the hollow mandrel and is communicated with the hollow mandrel, inclined holes uniformly distributed along the circumferential direction are formed in the side wall of the spray head body, the bottom of the spray head body is arc-shaped, and the bottom of the spray head body is provided with divergent spray holes.

The oxidation stirring mechanism further comprises paired second radial bearings, the pipe body penetrates through the machine shell in a movable mode, a second annular limiting plate is arranged on the pipe body, the paired second radial bearings are installed in the machine shell, and the paired second radial bearings are sleeved on the outer side of the pipe body and located on two sides of the second annular limiting plate.

The oxidation stirring mechanism further comprises a second sealing ring, a second annular groove is formed in the inner wall of the connecting sleeve, the second sealing ring is clamped in the second annular groove, and the second sealing ring is in contact with the peripheral wall of the connecting head.

The utility model adopts the beneficial effect that above-mentioned technical solution can reach is: the tail gas that produces in the feed level calcium hydrogen phosphate production process is discharged into the tower body from the air inlet, through the alkali lye pump sending to the shower in the tower body of water pump to spout from rotatory nozzle's inclined hole and orifice, spray the absorption processing to tail gas, when alkali lye spouts from rotatory nozzle's inclined hole, push nozzle body and rotate under fluidic reaction force, realize rotatory injection, thereby effectively improved the spray range of alkali lye, increased the area of contact of alkali lye and tail gas, thereby promoted tail gas desulfurization treatment effect. Rotate through motor drive body and cavity puddler, let in the oxidation air in to the cavity puddler through high-pressure air-blower simultaneously, the oxidation air is from the gas pocket blowout, with calcium sulfite oxidation to calcium sulfate in the alkali lye, the puddler of oxidation rabbling mechanism is when rotating the stirring, the oxidation air is from the gas pocket blowout to improved the oxidation reaction efficiency of oxidation air with calcium sulfite by a wide margin, effectively improved the quality of production efficiency and tail gas treatment accessory substance.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

fig. 4 is a cross-sectional view C-C of fig. 3.

Detailed Description

By shown in figure 1, tail gas processing apparatus is used in production of fodder level calcium hydrogen phosphate, it is including tower body 1, shower 2, water pump 3, defroster 4, oxidation rabbling mechanism and high-pressure air-blower 5 air inlet 6 has been seted up to the lateral part of tower body 1, has seted up row thick liquid mouth 7 in the lower part of tower body 1, has communicated valve 8 in row thick liquid mouth 7 department of tower body 1, has seted up tail row mouth 9 at the top of tower body 1, shower 2 is fixed to wear to put in tower body 1 that is located air inlet 6 top, the water inlet of water pump 3 is linked together with tower body 1 inside down, and the delivery port of water pump 3 is linked together through pipeline 46 and shower 2, is provided with rotatory nozzle 10 in a row on shower 2. As shown in fig. 3, the rotary nozzle 10 includes a housing 11, a hollow core 12, a ring sleeve 13, a pair of first radial bearings 14, a pair of thrust bearings 15, a first seal ring 16, and a nozzle body 17, a row of liquid discharge ports 18 are formed in the shower pipe 2, and the housing 11 is fixedly mounted at the liquid discharge port 18 of the shower pipe 2. The hollow mandrel 12 is movably inserted into the shell 11, a first annular limiting plate 48 is arranged on the hollow mandrel 12, the paired thrust bearings 15 are installed in the shell 11, the paired thrust bearings 15 are respectively sleeved outside the hollow mandrel 12 and located on the upper side and the lower side of the first annular limiting plate 48, the paired first radial bearings 14 are installed in the shell 11, the paired first radial bearings 14 are respectively sleeved outside the hollow mandrel 12, the ring sleeve 13 is clamped in the shell 11, and the ring sleeve 13 is located between the paired first radial bearings 14. A first annular groove is arranged on the outer peripheral wall of the hollow mandrel 12 above the thrust bearing 15, the first sealing ring 16 is clamped in the first annular groove and is contacted with the inner wall of the shell 11, and a pore passage 19 communicated with the liquid discharge port 18 and the hollow mandrel 12 is arranged at the upper part of the shell 11. The lower end of the hollow mandrel 12 penetrates out of the housing 11, the spray head body 17 is fixedly mounted on the lower end of the hollow mandrel 12 and is communicated with the hollow mandrel 12, as shown in fig. 4, inclined holes 20 are uniformly distributed along the circumferential direction on the side wall of the spray head body 17, the bottom of the spray head body 17 is arc-shaped, and spray holes 21 are formed in the bottom of the spray head body 17 in a divergent manner. The demister 4 is fixedly arranged in the tower body 1 above the spray pipe 2. As shown in fig. 2, the oxidizing and stirring mechanism includes a casing 30, a pipe 31, a sealing gasket 32, a sealing filler 33, a pair of second radial bearings 34, a second sealing ring 35, a motor 36 and a connector 37, the casing 30 is fixedly mounted on the outer side wall of the tower body 1 below the air inlet 6, the sealing gasket 32 is fixedly clamped between the casing 30 and the outer wall of the tower body 1, the pipe 31 is movably mounted in the casing 30, and is movably mounted in the following manner: the tube 31 is movably inserted into the casing 30, the tube 31 is provided with a second annular limiting plate 38, the paired second radial bearings 34 are installed in the casing 30, the paired second radial bearings 34 are sleeved outside the tube 31 and located at two sides of the second annular limiting plate 38, the packing 33 is clamped in the casing 30, the packing 33 is tightly fitted and sleeved outside the tube 31, the tube 31 is inserted into the tower body 1, the tube 31 located in the tower body 1 is provided with a hollow stirring rod 39 communicated with the tube 31, the hollow stirring rod 39 is provided with an air hole 40, the tube 31 is provided with a gear ring 41, the motor 36 is fixedly installed on the casing 30, an output shaft of the motor 36 is provided with a gear 42, the gear 42 is engaged with the gear ring 41, an end of the tube 31 is provided with a connecting sleeve 43, the connecting head 37 is fixedly installed on the casing 30 through a bracket 44, the connector 37 is movably clamped in the connecting sleeve 43, the connector 37 is communicated with the pipe body 31, a second annular groove is formed in the inner wall of the connecting sleeve 43, the second sealing ring 35 is clamped in the second annular groove, and the second sealing ring 35 is in contact with the outer peripheral wall of the connector 37. The high-pressure blower 5 is communicated with the connector 37 through an air pipe 45.

The utility model discloses a tail gas processing apparatus is used in production of fodder level calcium hydrogen phosphate at the during operation, stores alkali lye 47 such as sodium hydroxide or calcium hydroxide in tower body 1 that is located air inlet 6 below, and calcium hydroxide is chooseed for use to this embodiment. The tail gas that produces in the production process of feed level calcium hydrogen phosphate is discharged into in the tower body 1 from air inlet 6, through water pump 3 with the alkali lye 47 pump sending in the tower body 1 to shower 2 to spout from inclined hole 20 and the orifice 21 of rotatory nozzle 10, spray tail gas, make sulfur dioxide in the tail gas etc. contain sulfur gas and calcium hydrate neutralization generation calcium sulfite and calcium sulfate's mixture and fall into in alkali lye 47, tail gas after spraying the desulfurization passes through defroster 4 and carries out the defogging back and discharges into the atmosphere from tail discharge opening 9. When the alkali liquor is sprayed out from the inclined holes 20 of the spray head body 17 of the rotary spray head 10, the spray head body 17 is pushed to rotate under the reaction force of the fluid, so that the rotary spraying is realized, the spraying range of the alkali liquor is effectively increased, the contact area of the alkali liquor and the tail gas is increased, and the tail gas desulfurization treatment effect is improved. The pipe body 31 and the hollow stirring rod 39 are driven to rotate by the motor 36, meanwhile, the high-pressure blower 5 is used for introducing oxidizing air into the hollow stirring rod 39, the oxidizing air is sprayed out from the air hole 40, calcium sulfite in the alkali liquor 47 is oxidized into calcium sulfate, the calcium sulfate is deposited at the bottom of the tower body 1, the valve 8 is periodically opened, and the calcium sulfate slurry is discharged through the slurry outlet 7 for recycling. The stirring rod 39 of the oxidation stirring mechanism rotates and stirs, and simultaneously, the oxidation air is sprayed out from the air hole 40, so that the oxidation reaction efficiency of the oxidation air and the calcium sulfite is greatly improved, and the production efficiency and the quality of the tail gas treatment by-products are effectively improved.

Claims

1. Tail gas processing apparatus is used in production of fodder level calcium hydrogen phosphate, its characterized in that: the device comprises a tower body, a spray pipe, a water pump, a demister, an oxidation stirring mechanism and a high-pressure air blower, wherein an air inlet is arranged at the side part of the tower body, a slurry discharge port is arranged at the lower part of the tower body, the slurry discharge port of the tower body is communicated with a valve, a tail discharge port is arranged at the top part of the tower body, the spray pipe is fixedly arranged in the tower body above the air inlet in a penetrating way, a water inlet of the water pump is communicated with the lower inner part of the tower body, a water outlet of the water pump is communicated with the spray pipe, a row of rotary spray nozzles are arranged on the spray pipe, the demister is fixedly arranged in the tower body above the spray pipe, the oxidation stirring mechanism comprises a casing, a pipe body, a sealing gasket, a sealing filler, a motor and a connector, the casing is fixedly arranged on the outer side wall below the air inlet, the, the sealing filler is clamped in the casing, the sealing filler is tightly sleeved outside the pipe body, the pipe body penetrates in the tower body, a hollow stirring rod communicated with the pipe body is arranged on the pipe body in the tower body, an air hole is formed in the hollow stirring rod, a gear ring is arranged on the pipe body, the motor is fixedly installed on the casing, a gear is arranged on an output shaft of the motor and meshed with the gear ring, a connecting sleeve is arranged at the end part of the pipe body, the connector is fixedly installed on the casing through a support, the connector is movably clamped in the connecting sleeve, the connector is communicated with the pipe body, and the high-pressure air blower is communicated with the connector.

2. The tail gas treatment device for producing feed-grade calcium hydrophosphate according to claim 1, characterized in that: the rotary spray head comprises a shell, a hollow core shaft, a ring sleeve, paired first radial bearings, paired thrust bearings, a first sealing ring and a spray head body, wherein rows of liquid discharge ports are formed in the spray pipe, the shell is fixedly arranged at the liquid discharge port of the spray pipe, the hollow core shaft is movably inserted into the shell, a first annular limiting plate is arranged on the hollow core shaft, the paired thrust bearings are arranged in the shell, the paired thrust bearings are respectively sleeved outside the hollow core shaft and positioned at the upper side and the lower side of the first annular limiting plate, the paired first radial bearings are arranged in the shell, the paired first radial bearings are respectively sleeved outside the hollow core shaft, the ring sleeve is clamped in the shell, the ring sleeve is positioned between the paired first radial bearings, and a first annular groove is formed in the outer peripheral wall of the hollow core shaft above the thrust bearings, the first sealing ring is clamped in the first annular groove and is in contact with the inner wall of the shell, the upper portion of the shell is provided with a pore passage communicated with the liquid discharge port and the hollow mandrel, the lower end portion of the hollow mandrel penetrates out of the shell, the spray head body is fixedly installed on the lower end portion of the hollow mandrel and is communicated with the hollow mandrel, inclined holes uniformly distributed along the circumferential direction are formed in the side wall of the spray head body, the bottom of the spray head body is arc-shaped, and the bottom of the spray head body is provided with divergent spray holes.

3. The tail gas treatment device for producing feed-grade calcium hydrogen phosphate according to claim 1 or 2, characterized in that: the oxidation stirring mechanism further comprises paired second radial bearings, the pipe body penetrates through the machine shell in a movable mode, a second annular limiting plate is arranged on the pipe body, the paired second radial bearings are installed in the machine shell, and the paired second radial bearings are sleeved on the outer side of the pipe body and located on two sides of the second annular limiting plate.

4. The tail gas treatment device for producing feed-grade calcium hydrophosphate according to claim 3, characterized in that: the oxidation stirring mechanism further comprises a second sealing ring, a second annular groove is formed in the inner wall of the connecting sleeve, the second sealing ring is clamped in the second annular groove, and the second sealing ring is in contact with the peripheral wall of the connecting head.