Device for producing diammonium phosphate containing humic acid

Abstract

The utility model relates to a device for producing diammonium phosphate containing humic acid. The humic acid tank is sequentially communicated with the humic acid pump and the wrapping cylinder through pipelines, the humic acid pipeline is arranged at the rear section of the wrapping cylinder, a humic acid nozzle is arranged at the rear end of the humic acid pipeline, the anti-blocking agent pipeline is arranged at the front section of the wrapping cylinder, an anti-blocking agent nozzle is arranged at the front end of the anti-blocking agent pipeline, and a spiral shoveling plate is arranged at the middle section of the wrapping cylinder. And physical fusion with humic acid is carried out at the front end of the wrapping cylinder. Then, an anti-blocking agent is added to the rear end of the wrapping barrel, the diammonium phosphate material containing humic acid is wrapped, and therefore the diammonium phosphate product containing humic acid is prepared. The technological process is simple and convenient, the technology is advanced, direct contact between humic acid and a high-temperature environment is effectively avoided, the problem that thermosensitive components are inactivated when heated is solved, and the functional characteristics of the humic acid-containing diammonium phosphate product are ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of production of phosphate compound fertilizer, in particular to a device for producing phosphoric acid diammonium containing humic acid. BACKGROUND

[0002] In the market of phosphoric acid diammonium, the traditional 64.0% product occupies the dominant position. However, such product has many defects, the utilization rate of fertilizer effect is low, and it has adverse effects on the soil environment. If the enterprise can add humic acid as a fertilizer synergist in the 64.0% phosphoric acid diammonium product, and solve the technical problem of loss of activity caused by heat in the production process, and ensure the functional activity of the produced phosphoric acid diammonium containing humic acid product, the defects of low utilization rate of phosphoric acid diammonium fertilizer effect and soil pollution can be made up. Therefore, a device for producing phosphoric acid diammonium containing humic acid must be developed. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a device for producing phosphoric acid diammonium containing humic acid (content of 64%), which has simple process flow, advanced technology, effectively avoids the direct contact of humic acid with high temperature environment, solves the problem of heat inactivation of heat-sensitive components, and ensures the functional characteristics of the humic acid-containing phosphoric acid diammonium product.

[0004] To solve the above technical problems, the technical scheme adopted by the present application is:

[0005] The present application aims to provide a device for producing humic acid containing phosphoric acid diammonium. The humic acid tank is connected with the humic acid pump and the wrapping cylinder in sequence through the pipeline, the humic acid pipeline is arranged at the rear section of the wrapping cylinder, and the humic acid nozzle is arranged at the rear end, the anti-caking agent pipeline is arranged at the front section of the wrapping cylinder, and the anti-caking agent nozzle is arranged at the front end, and the spiral scraper is arranged in the middle section of the wrapping cylinder.

[0006] The inclination angle of the wrapping cylinder is controlled at 3°-5°.

[0007] The humic acid nozzle is a vortex type nozzle, the nozzle spraying fan angle is controlled at 60°-70°, and the phosphoric acid diammonium material in the wrapping cylinder is sprayed to realize wrapping.

[0008] The spiral scraper and the inner wall of the wrapping cylinder are connected by stainless steel plates, and the thickness and height of the steel plates are respectively controlled at 5-10mm and 300-600mm.

[0009] A flow meter is arranged on the connecting pipeline from the humic acid tank to the wrapping cylinder, and the humic acid pump is a variable frequency regulating pump.

[0010] The wrapping cylinder and the finished product belt are connected through the pipeline, and the belt scale is arranged on the finished product belt.

[0011] The humic acid addition amount is adjusted by the belt scale load weight, and the humic acid addition amount is connected in series by the humic acid flow meter and the humic acid pump frequency.

[0012] The device uniformly sprays humic acid on the front end of the wrapping cylinder by using the vortex nozzle, and adds an anti-caking agent at the rear end to wrap the DAP material containing humic acid. In addition, the modular control technology of electrical instruments is introduced to realize the process interlocking of the humic acid addition amount and the belt load of the wrapping cylinder outlet, ensuring the accurate and stable addition of humic acid, so as to generate DAP products containing humic acid. The device effectively solves the problem of inactivation of heat-sensitive components in humic acid during the heating process, and prevents the technical difficulties of material caking and pulverization in wrapping, thereby ensuring the functional characteristics of DAP products containing humic acid.

[0013] The humic acid from the humic acid tank is transported to the humic acid nozzle at the front end of the wrapping cylinder through the humic acid pump and the related pipeline, and is sprayed onto the DAP material in the wrapping cylinder through the vortex nozzle. The spraying fan angle of the nozzle is controlled at 60°-70°.

[0014] Preferably, the DAP material from the cooling process enters the head of the front section of the wrapping cylinder through the pipeline, sprays humic acid through the vortex nozzle of the front section of the wrapping cylinder, sprays the fertilizer anti-caking agent through the nozzle of the rear section of the wrapping cylinder, and the temperature of the DAP material after the cooling process is controlled at 45-60℃.

[0015] Preferably, the DAP material is uniformly wrapped with humic acid and fertilizer anti-caking agent on the surface of the DAP particles under the rotation of the wrapping cylinder and the separation and stirring action of the spiral flight, realizing the effect of double wrapping and solving the problem of insolubility of humic acid (aqueous substance) and anti-caking agent (oily substance).

[0016] Preferably, the DAP material wrapped with humic acid and fertilizer anti-caking agent in the wrapping cylinder is discharged to the finished product belt scale through the pipeline at the tail of the wrapping cylinder under the rotation of the wrapping cylinder, and the belt scale load is controlled at 100-120t / h, and the inclination angle of the wrapping cylinder is controlled at 3°-5°.

[0017] Preferably, the addition amount of humic acid is controlled at 500-600L / h by the weight-flow interlocking of the belt scale and the humic acid pump, and the humic acid addition amount is controlled at 3-5L / t.

[0018] In the preferred scheme, the humic acid tank is made of 316L material.

[0019] In the preferred scheme, the humic acid tank, humic acid pump, humic acid flow meter and humic acid nozzle are connected by stainless steel, the pipeline is controlled according to DN15-DN50, preferably DN25 pipeline and 316L material.

[0020] In the preferred scheme, the maximum range of the humic acid flow meter is 10-50L / h, preferably 20L / h, and the material is 316L.

[0021] In the preferred scheme, the wrapping cylinder and finished product belt are connected by stainless steel, controlled according to DN125-DN300, preferably DN200 pipeline and 316L material.

[0022] In the preferred scheme, the spiral scraper and the inner wall of the wrapping cylinder are connected by stainless steel plate, the thickness and height of the steel plate are controlled according to 5-10mm and 300-600mm respectively, preferably 8mm in thickness and 500mm in height, and the material is 316L.

[0023] In the preferred scheme, the maximum range of the belt scale is 200-500t / h, preferably 300t / h.

[0024] The utility model has the beneficial effects:

[0025] The utility model provides a device for producing 64% diammonium phosphate containing humic acid, utilizes the device to produce diammonium phosphate containing humic acid, and the product is rich in nutrition and can improve soil structure, stimulate crop growth, improve agricultural product quality, improve fertilizer utilization rate and promote nutrient absorption. BRIEF DESCRIPTION OF DRAWINGS

[0026] The utility model will be further described in connection with the drawings and examples:

[0027] Figure 1 is a structural schematic view of the device of example 1, wherein, 1. humic acid tank, 2. humic acid pump, 3. humic acid flow meter, 4. humic acid nozzle, 5. anti-caking agent nozzle, 6. wrapping cylinder, 7. spiral scraper, 8. finished product belt, 9. belt scale.

[0028] Figure 2 is a structural schematic view of example 2, wherein: 1' pipe reverse tank, 2' pipe reverse pump, 3' pipe reactor, 4' granulator, 5' dryer, 6' hot blast furnace, 7' process sieve, 8' finished product sieve, 9' plate cooler, 10' wrapping cylinder, 11' finished product belt. DETAILED DESCRIPTION

[0029] Example 1

[0030] As Figure 1As shown, the humic acid tank 1 is connected with the humic acid pump 2 and the wrapping cylinder 6 through pipes in sequence, a flow meter 3 is arranged on the pipe connected with the wrapping cylinder 6, and the humic acid pump 2 is a variable frequency regulating pump. The humic acid nozzle 4 is arranged at the rear section of the wrapping cylinder, the anti-caking agent nozzle 5 is arranged at the front section of the wrapping cylinder, and the spiral scraper 7 is arranged at the middle section of the wrapping cylinder. The wrapping cylinder 6 is connected with the finished product belt 8 through a pipe, and the finished product belt 8 is provided with a belt scale 9. The humic acid addition amount is adjusted by the load weight of the belt scale 9, and the humic acid addition amount is flow interlocking through the humic acid flow meter 3 and the frequency of the humic acid pump 2.

[0031] Preferably, the diammonium phosphate material from the cooling process enters the head of the front section of the wrapping cylinder through a pipe, and the humic acid is sprayed and wrapped through the vortex nozzle of the front section of the wrapping cylinder, and the anti-caking agent of the fertilizer is sprayed and wrapped through the nozzle of the rear section of the wrapping cylinder.

[0032] Preferably, under the rotation of the wrapping cylinder and the separation and stirring of the spiral scraper, the diammonium phosphate material is uniformly wrapped with humic acid and anti-caking agent of the fertilizer on the surface of the diammonium phosphate particles in sequence, realizing a double wrapping effect and solving the problem of incompatibility between humic acid (aqueous substance) and anti-caking agent (oily substance).

[0033] Preferably, the diammonium phosphate material wrapped with humic acid and anti-caking agent of the fertilizer is discharged to the finished product belt scale under the action of the rotation of the wrapping cylinder, and the load of the belt scale is controlled at 100-120 t / h, and the inclination angle of the wrapping cylinder is controlled at 3°-5°.

[0034] The humic acid from the humic acid tank 1 is transported to the wrapping cylinder 6 through the humic acid pump 2. At the front end of the wrapping cylinder 6, the vortex humic acid nozzle 4 is responsible for uniformly spraying the humic acid in the cylinder. The diammonium phosphate material after granulation, drying, screening, crushing and cooling treatment is physically fused with the humic acid at the front end of the wrapping cylinder 6. In this process, by adjusting the frequency of the humic acid pump 2, the variable frequency control of the humic acid addition amount is realized, and the flow interlocking control with the load of the finished product belt 8 is realized. Subsequently, at the rear end of the wrapping cylinder 6, the anti-caking agent is coated and wrapped on the diammonium phosphate material containing humic acid through the nozzle 5. After sufficient wrapping, the diammonium phosphate product containing humic acid is prepared, and finally transported to the diammonium phosphate storage through the finished product belt 8.

[0035] Example 2

[0036] As Figure 2As shown, humic acid is added to the tubular reactor and mixed with concentrated phosphoric acid in the tank to form a mixed solution containing humic acid. The solution is transported by the delivery pump of the tubular reactor into the tubular reactor and reacts with liquid ammonia to generate a phosphoric acid ammonium slurry containing humic acid. Subsequently, the slurry is introduced into the granulator and coated with DAP master batch for granulation. The granulated material is subjected to moisture drying treatment by hot air provided by the hot air furnace in the drying machine, and then subjected to particle size screening by the process screen and the finished product screen. The material with a particle size meeting the standard is then cooled by the plate cooler and transported to the wrapping cylinder for wrapping treatment by adding an anti-caking agent. The wrapped DAP product containing humic acid is transported to the DAP storage warehouse by the finished product belt.

[0037] Preferably, the amount of humic acid added is flow-locked with the amount of concentrated phosphoric acid, and the amount of concentrated phosphoric acid is controlled at 45-55 m 3 / h, the amount of slurry sprayed by the granulator is 61-76 t / h, and the amount of humic acid added is controlled at 12 L / h-15 L / h, and the humic acid content in the humic acid-containing DAP is 5 L / t.

[0038] In humic acid, there are heat-sensitive components such as amino acids, alginic acid, etc. When these components are exposed to a high-temperature environment exceeding 100°C, they will cause deactivation. In the case of Example 1, the temperature of the DAP material after the cooling process is controlled between 45-60°C, and the humic acid is physically integrated with the DAP material in the wrapping process after the cooling process, which can effectively prevent the humic acid from being heat-inactivated and ensure that the final humic acid-containing DAP product is not functionally impaired.

[0039] In Example 2, in the tubular reactor, humic acid is mixed with concentrated phosphoric acid, and the mixed solution reacts with liquid ammonia to generate DAP material, and the reaction temperature is above 110°C. Subsequently, the material is subjected to drying, screening, cooling, etc., and finally forms a DAP product by wrapping an anti-caking agent. In this process, the drying machine uses hot air generated by a coal-fired hot air furnace for drying treatment, and the drying temperature needs to be maintained above 450°C. However, in the high-temperature environment of the tubular reactor and the drying machine, heat-sensitive components in humic acid, such as amino acids, alginic acid, etc., will inevitably be heat-inactivated, which leads to the loss of functionality of the final humic acid-containing DAP product.

[0040] In the comparative analysis of Process Example 1 and Example 2, Example 1 has obvious advantages over Example 2 in the production of humic acid-containing DAP. Specifically, Example 1 can effectively prevent heat-sensitive components such as amino acids and alginic acid in humic acid from being exposed to a high-temperature environment exceeding 100°C, thereby ensuring that the final product remains intact and is not functionally impaired.

[0041] The above-mentioned embodiments are only preferred technical solutions of the present application, and should not be regarded as limiting the present application, and the protection scope of the present application should be the technical solutions recited in the claims, including the equivalent replacement solutions of the technical features recited in the claims as the protection scope. That is, the equivalent replacement improvements within the scope are also within the protection scope of the present application.

Claims

1. An apparatus for producing a humic acid-containing diammonium phosphate, characterized by: Humic acid tank (1) is communicated with humic acid pump (2) and wrapping cylinder (6) through pipeline, Humic acid pipeline is arranged at rear section of wrapping cylinder (6), and humic acid nozzle (4) is arranged at rear end, anti-blocking agent pipeline is arranged at front section of wrapping cylinder (6), and anti-blocking agent nozzle (5) is arranged at front end, and spiral scraper (7) is arranged at middle section of wrapping cylinder (6).

2. The device for producing diammonium phosphate containing humic acid according to claim 1, characterized in that: The inclination angle of wrapping cylinder (6) is controlled to be 3°-5°.

3. The device for producing diammonium phosphate containing humic acid according to claim 1, characterized by the fact that: Humic acid nozzle (4) is vortex nozzle, and the spraying fan angle of nozzle is controlled to be 60°-70°, and is sprayed to DAP material in wrapping cylinder to realize wrapping.

4. The apparatus for producing diammonium phosphate containing humic acid according to claim 1, characterized by: Spiral scraper (7) is connected with inner wall of wrapping cylinder (6) by stainless steel plate, and the thickness and height of steel plate are controlled to be 5-10 mm and 300-600 mm respectively.

5. The apparatus for producing diammonium phosphate containing humic acid as claimed in claim 1 wherein: Flow meter (3) is arranged on the communication pipeline from humic acid tank (1) to wrapping cylinder (6), and humic acid pump (2) is variable frequency regulating pump.

6. The apparatus for producing diammonium phosphate containing humic acid as claimed in claim 1 wherein: Wrapping cylinder (6) is connected with finished product belt (8) through pipeline, and belt scale (9) is arranged on finished product belt (8).

7. The device for producing diammonium phosphate containing humic acid according to claim 1, characterized by the fact that: The humic acid adding amount is adjusted by the load weight of belt scale (9), and the humic acid adding amount is flow interlocking through humic acid flow meter (3) and frequency of humic acid pump (2).

Images