A device for deaminating hydrolyzed livestock manure

Abstract

The application discloses a kind of hydrolysis livestock and poultry manure deamination device, including deamination tank body;The rotating shaft is arranged in the inside center of the deamination tank body, and a plurality of rotating discs and paddle assemblies are fixedly installed on the rotating shaft, and the rotating disc and paddle assembly are interval arrangement;Multiple through-holes are formed in the rotating disc.The paddle assembly includes multiple paddles distributed along the rotating shaft circumferentially at intervals, and the surface of the paddle is arranged as an arc.The rotating disc is arranged, and when rotating, the raw materials below liquid level are brought to the above liquid level, the raw materials are stirred, spread and attached on the rotating disc by the rotating disc, the contact area between the raw materials and gas is increased, the ammonia nitrogen removal efficiency of raw materials is improved, and the through-hole is also arranged to ensure the circulation of stripping gas in the deamination tank body.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of livestock manure treatment, and particularly relates to a hydrolyzed livestock manure ammonia removal device. BACKGROUND

[0002] Livestock manure is rich in a large amount of available biological organic matter, and the anaerobic fermentation method is usually used at home and abroad to treat the livestock manure, so that the solid waste is harmlessly treated and green and clean biological energy is obtained.

[0003] The livestock manure contains rich organic matter, especially crude protein, which leads to a high ammonia nitrogen content in the process of anaerobic fermentation of the livestock manure, thereby affecting the stable operation of the anaerobic fermentation system.

[0004] The methods of adding straw for co-fermentation, backflow of biogas slurry ammonia removal, dilution of livestock manure with water, fermentation microbial domestication, and pre-ammonia removal of livestock manure are proposed to eliminate ammonia inhibition, but the seasonality and regionalism of straw make the co-fermentation difficult to popularize; dilution of livestock manure with water can shorten the hydraulic retention time and increase the water consumption and the treatment cost of the biogas slurry; the measures of fermentation microbial domestication and backflow of biogas slurry ammonia removal cannot fundamentally eliminate ammonia inhibition.

[0005] Pre-ammonia removal of livestock manure refers to hydrolysis treatment of the livestock manure, conversion of nitrogen in the protein into ammonium nitrogen, and removal of the ammonium nitrogen, so as to reduce the ammonia nitrogen content in the anaerobic fermentation system and fundamentally eliminate the influence of ammonia inhibition.

[0006] In the research on ammonia nitrogen removal in the prior art, it is found that increasing the gas-liquid contact area in the process of blowing off ammonia nitrogen can significantly increase the removal efficiency of ammonia nitrogen. Generally, the surface area in the equipment is increased by installing fillers in the equipment to increase the gas-liquid contact area, but this method is only suitable for the treatment of ammonia-containing wastewater, and the high solid content of livestock manure and other wastes can easily cause equipment blockage, so that the equipment cannot normally operate. Therefore, in order to achieve the purpose of quickly and efficiently removing ammonia nitrogen in livestock manure, the present application is designed from the perspective of expanding the surface area of high solid materials, and taking avoiding blockage of raw materials as the starting point, a hydrolyzed livestock manure ammonia removal device is designed. SUMMARY

[0007] The present application proposes the following technical solutions in view of the problems encountered in the process of ammonia nitrogen treatment of livestock manure in the prior art.

[0008] The present application provides a hydrolyzed livestock manure ammonia removal device, comprising:

[0009] An ammonia removal tank body;

[0010] A rotating shaft is arranged in the center of the ammonia removal tank body, a plurality of rotating discs and paddle assemblies are fixedly installed on the rotating shaft, and the rotating discs and paddle assemblies are arranged at intervals.

[0011] The turntable has multiple through holes.

[0012] As a preferred embodiment of the above technical solution, the blade assembly includes a plurality of blades spaced apart circumferentially along the axis of rotation, and the blade surfaces of the blades are configured as arc-shaped.

[0013] As a preferred embodiment of the above technical solution, the blade assembly includes a ring fixedly sleeved on the rotating shaft, and a plurality of extension rods are circumferentially spaced on the outer wall of the ring, with the blade disposed at the other end of the extension rods.

[0014] As a preferred embodiment of the above technical solution, it further includes a scraping assembly, which is disposed on both sides of the turntable in the direction of entering the liquid surface. The scraping assembly scrapes off the deaminated raw material adhering to the turntable during the turntable rotation.

[0015] As a preferred embodiment of the above technical solution, the scraping assembly includes a scraper and a sleeve. The sleeve is movably sleeved outside the rotating shaft and located between the turntable and the blade assembly. The scraper is fitted to both sides of the turntable. One end of the scraper is fixedly installed on the inner wall of the deammoniation tank above the liquid level, and the other end of the scraper is fixedly connected to the sleeve.

[0016] As a preferred embodiment of the above technical solution, it further includes baffles, which are disposed on both sides of the turntable away from the liquid surface, and are positioned on the turntable at a position higher than the liquid surface. The baffles are close to the turntable and are V-shaped together.

[0017] As a preferred embodiment of the above technical solution, the included angle between the baffle and the turntable is 15°.

[0018] As a preferred embodiment of the above technical solution, a jacket assembly is provided on the tank wall of the ammonia removal tank, the jacket assembly including a jacket cavity into which a heat exchange medium is introduced.

[0019] As a preferred embodiment of the above technical solution, the ammonia removal tank includes a feed inlet and a discharge outlet respectively disposed on the top and bottom of the tank, and an air inlet and an air outlet disposed on both sides of the tank wall.

[0020] The beneficial effects of this invention are as follows:

[0021] (1) The present invention uses a turntable that brings the raw material below the liquid surface to the top of the liquid surface when it rotates. The raw material is stirred and coated and adhered to the turntable, which increases the contact area between the raw material and the gas and improves the ammonia nitrogen removal efficiency of the raw material. At the same time, the through hole can also ensure the flow of the stripping gas inside the ammonia removal tank.

[0022] (2) The present invention uses a paddle assembly that rotates continuously with the rotating shaft. On the one hand, the paddle can bring the raw material from the bottom of the tank or a lower position to the surface of the raw material, and at the same time, some of the raw material stays on the paddle, increasing the surface area of ​​the raw material and making the contact between the raw material and the gas more sufficient, thereby improving the evaporation efficiency of ammonia in the raw material. On the other hand, replacing part of the turntable with the paddle assembly can also reduce the gas resistance in the deammoniation tank, which is conducive to the flow of the blow-off air. At the same time, the stirring of the paddle assembly can also enhance the heat exchange effect between the raw material and the tank jacket.

[0023] (3) The present invention uses a scraping assembly to scrape the deaminated raw material off the turntable before it enters the liquid, so that each time the turntable brings out the liquid surface, it is the raw material that has not been deaminated, which increases the contact area between the fresh raw material and the stripping gas, forms a continuous raw material circulation, and improves the ammonia nitrogen removal efficiency.

[0024] (4) The present invention effectively prevents the raw materials carried out of the liquid surface by the turntable from falling back below the liquid surface by setting the baffle, thereby improving the adhesion efficiency of the raw materials on the turntable, increasing the contact area between the gas and the raw materials, and improving the removal efficiency of ammonia nitrogen. Attached Figure Description

[0025] Figure 1 The diagram shown is an overall schematic of the ammonia removal device in the embodiment;

[0026] Figure 2 The diagram shown is a cross-sectional schematic of the ammonia removal device in the embodiment;

[0027] Figure 3 What is shown is Figure 2 Enlarged schematic diagram of the structure at point A in the diagram;

[0028] Figure 4 The diagram shown is a plan view of the internal structure of the ammonia removal tank in the embodiment;

[0029] Figure 5 The diagram shown is a three-dimensional schematic of the internal structure of the ammonia removal tank in the embodiment.

[0030] Figure 6 What is shown is Figure 5 Enlarged schematic diagram of the structure at point B in the diagram;

[0031] Figure 7 The diagram shown is a cross-sectional view of the internal structure of the ammonia removal tank in the embodiment.

[0032] Figure 8 The diagram shown is a schematic representation of the turntable in the embodiment;

[0033] Figure 9 The diagram shown is a schematic representation of the blade assembly in the embodiment;

[0034] Reference numerals: 10. Ammonia removal tank; 11. Feed inlet; 12. Discharge outlet; 13. Air inlet; 14. Air outlet; 21. Jacket assembly; 22. Rotating shaft; 30. Turntable; 31. Through hole; 32. Mounting hole; 40. Paddle assembly; 41. Ring clamp; 42. Extension rod; 43. Paddle; 50. Scraper assembly; 51. Scraper; 52. Sleeve; 60. Baffle. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0036] Example

[0037] like Figure 1 As shown, Figure 1 The diagram shown is an overall schematic of the ammonia removal device in the embodiment;

[0038] This device includes: an ammonia removal tank 10, which includes a feed inlet 11 and a discharge outlet 12 respectively located at the top and bottom of the tank, as well as an air inlet 13 and an air outlet 14 located on both sides of the tank wall;

[0039] The feed inlet 11, discharge outlet 12, air inlet 13, and air outlet 14 are all connected to the inner cavity of the deammoniation tank 10. The inner cavity of the deammoniation tank 10 contains hydrolyzed livestock and poultry manure raw materials, and air is introduced to strip ammonia nitrogen from the raw materials.

[0040] like Figure 2 , Figure 3 As shown, Figure 2 The diagram shown is a cross-sectional schematic of the ammonia removal device in the embodiment; Figure 3 What is shown is Figure 2 Enlarged schematic diagram of the structure at point A in the diagram;

[0041] A jacket assembly 21 is provided on the tank wall of the ammonia removal tank 10. The jacket assembly 21 includes a jacket cavity into which a heat exchange medium is introduced.

[0042] The heat exchange medium is hot water at 50-80℃, which increases the temperature of the raw material through heat transfer between the hot water and the raw material inside the tank. Specifically, the deammoniation tank 10 is equipped with an inlet and a outlet that communicate with the jacket cavity. Hot water is injected into the jacket cavity through the inlet and can be discharged from the outlet.

[0043] By using the jacket assembly 21, the temperature of the raw material inside the ammonia removal tank 10 can be increased, thereby increasing the ammonia nitrogen removal rate.

[0044] like Figure 2 , Figure 4 As shown, Figure 2 The diagram shown is a cross-sectional schematic of the ammonia removal device in the embodiment; Figure 4The diagram shown is a plan view of the internal structure of the ammonia removal tank in the embodiment;

[0045] The ammonia removal tank 10 has a rotating shaft 22 at its center, and multiple turntables 30 and blade assemblies 40 are fixedly installed on the rotating shaft 22.

[0046] One end of the rotating shaft 22 extends to the outside of the ammonia removal tank 10 and is connected to the geared motor. The geared motor drives the rotating shaft 22 to rotate, thereby driving the turntable 30 and the blade assembly 40 to rotate synchronously.

[0047] like Figure 8 As shown, Figure 8 The diagram shown is a schematic representation of the turntable in the embodiment;

[0048] The turntable 30 has through holes 31 and mounting holes 32. The mounting holes 32 are located at the center of the turntable 30. The rotating shaft 22 is inserted into the mounting holes 32 of the turntable 30. There are multiple through holes 31, which are evenly distributed in other positions of the turntable 30 except for the mounting holes 32.

[0049] When the turntable 30 rotates, it will bring the raw material below the liquid surface to the top of the liquid surface. The raw material is stirred and coated and adhered to the turntable 30 by the turntable 30, which increases the contact area between the raw material and the stripping gas and improves the ammonia removal efficiency of the raw material. At the same time, the through hole 31 can also ensure the flow of stripping gas inside the ammonia removal tank 10.

[0050] More specifically, the through hole 31 is circular with a diameter of 5-10cm, and the area of ​​the through hole 31 accounts for 10-30% of the total area of ​​the turntable 30.

[0051] like Figure 9 As shown, Figure 9 The diagram shown is a schematic representation of the blade assembly in the embodiment;

[0052] The blade assembly 40 includes a ring 41, and a plurality of extension rods 42 are arranged circumferentially on the outer wall of the ring 41, and the other end of the extension rods 42 is provided with blades 43.

[0053] In this embodiment, the blade surface of the blade 43 is arc-shaped, and the number of each group is set to 3-8. The arc-shaped blade 43 can further increase the contact area between the raw material and the stripping gas.

[0054] As the paddle assembly 40 rotates continuously with the rotating shaft 22, the paddles 43 not only bring the raw material from the bottom of the tank or a lower position to the surface of the raw material, but also allow some of the raw material to remain on the paddles 43, increasing the surface area of ​​the raw material and making the contact between the raw material and the gas more sufficient, thereby improving the evaporation efficiency of ammonia in the raw material. On the other hand, replacing part of the turntable with the paddle assembly can also reduce the gas resistance in the deammoniation tank, which is conducive to the flow of the blow-off air. At the same time, the stirring of the paddle assembly enhances the heat exchange effect between the raw material and the tank jacket.

[0055] The combined design of the rotary table 30 and the paddle assembly 40 provides two different ways to increase the surface area of ​​the feedstock. The rotary table 30 expands the liquid / gas exchange interface by bringing the feedstock above the liquid surface; while the paddle assembly 40 increases the contact area between the feedstock and the stripping gas by agitating the feedstock. These two methods complement each other and greatly improve the evaporation and stripping efficiency of ammonia.

[0056] The spacing between the turntable 30 and the blade assembly 40 reduces the flow resistance of the stripping gas inside the ammonia removal tank 10. This optimized gas flow path helps the gas to fully contact the raw material and carry more ammonia nitrogen out.

[0057] like Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, Figure 4 The diagram shown is a plan view of the internal structure of the ammonia removal tank in the embodiment; Figure 5 The diagram shown is a three-dimensional schematic of the internal structure of the ammonia removal tank in the embodiment. Figure 6 What is shown is Figure 5 Enlarged schematic diagram of the structure at point B in the diagram.

[0058] It also includes a scraping assembly 50, which is located on both sides of the turntable 30 in the direction of entering the liquid surface, and scrapes off the material adhering to the turntable 30 after ammonia and nitrogen stripping during the rotation of the turntable 30.

[0059] The scraping assembly 50 includes a scraper 51 and a sleeve 52. The sleeve 52 is movably sleeved outside the rotating shaft 22 and located between the turntable 30 and the blade assembly 40. The scraper 51 is fitted to both sides of the turntable 30. One end of the scraper 51 is fixedly installed on the inner wall of the deammoniation tank 10 above the raw material liquid level, and the other end is fixedly connected to the sleeve 52.

[0060] The scraper 51 scrapes the deammonized raw material off the liquid surface before it enters the rotating disc 30, so that each time the rotating disc 30 brings out the undeammonized raw material, a continuous raw material circulation is formed, which improves the processing efficiency.

[0061] It also includes baffles 60, which are disposed on both sides of the turntable 30 away from the liquid surface. The baffles 60 are disposed on the turntable 30 at a position higher than the liquid surface. The baffles 60 are close to the turntable 30 and are in a V-shape fit. The included angle between the baffles 60 and the turntable 30 is 15°.

[0062] The baffle 60 can effectively prevent the raw material that has been carried out of the liquid surface by the turntable 30 from falling back below the liquid surface, which increases the effective circulation of the raw material.

[0063] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A device for deammoniation of hydrolyzed livestock and poultry manure, characterized in that, include: Ammonia removal tank (10); The deammonia removal tank (10) has a rotating shaft (22) at its center. Multiple turntables (30) and blade assemblies (40) are fixedly installed on the rotating shaft (22). The turntables (30) and blade assemblies (40) are spaced apart. The turntable (30) has multiple through holes (31); It also includes a scraping assembly (50), which is located on both sides of the turntable (30) in the direction of entering the liquid surface. The scraping assembly (50) scrapes off the deaminated raw material attached to the turntable (30) during the rotation of the turntable (30).

2. The ammonia removal device for hydrolyzed livestock and poultry manure according to claim 1, characterized in that, The blade assembly (40) includes a plurality of blades (43) spaced circumferentially along the axis of rotation (22), and the blade surfaces of the blades (43) are configured to be arc-shaped.

3. The ammonia removal device for hydrolyzed livestock and poultry manure according to claim 2, characterized in that, The blade assembly (40) includes a ring (41) fixedly sleeved on the rotating shaft (22), and a plurality of extension rods (42) are arranged circumferentially on the outer wall of the ring (41), and the blade (43) is disposed at the other end of the extension rods (42).

4. The ammonia removal device for hydrolyzed livestock and poultry manure according to claim 1, characterized in that, The scraping assembly (50) includes a scraper (51) and a sleeve (52). The sleeve (52) is movably sleeved outside the rotating shaft (22) and located between the turntable (30) and the blade assembly (40). The scraper (51) is fitted to both sides of the turntable (30). One end of the scraper (51) is fixedly installed on the inner wall of the deammoniation tank (10) above the liquid level, and the other end of the scraper (51) is fixedly connected to the sleeve (52).

5. The ammonia removal device for hydrolyzed livestock and poultry manure according to claim 1, characterized in that, It also includes baffles (60), which are disposed on both sides of the turntable (30) away from the liquid surface. The baffles (60) are disposed on the turntable (30) at a position higher than the liquid surface. The baffles (60) are close to the turntable (30) and are in a V-shape.

6. The ammonia removal device for hydrolyzed livestock and poultry manure according to claim 5, characterized in that, The included angle between the baffle (60) and the turntable (30) is 15°.

7. The ammonia removal device for hydrolyzed livestock and poultry manure according to claim 1, characterized in that, The deammonia removal tank (10) is provided with a jacket assembly (21) on its tank wall. The jacket assembly (21) includes a jacket cavity into which a heat exchange medium is introduced.

8. The ammonia removal device for hydrolyzed livestock and poultry manure according to claim 1, characterized in that, The ammonia removal tank (10) includes a feed inlet (11) and a discharge outlet (12) respectively located at the top and bottom of the tank, as well as an air inlet (13) and an air outlet (14) located on both sides of the tank wall.

Images