Horizontal paddle reaction granulator and operation method thereof

Abstract

The invention provides a horizontal paddle reaction granulator and an operation method thereof. The reaction granulator comprises a base, a motor, a coupler, a gear reducer, a bearing seat, a U-shapedgroove body, an end cover, a top cover, a paddle shaft, a hoop, a paddle and an electric control cabinet, the U-shaped groove body is mainly composed of a U-shaped outer framework and a flexible nonmetal plate. Wherein the end cover is provided with a packing seal box, the inner side of the end cover is provided with a flexible non-metal lining, the top cover is of a segmented structure, the inner side of the top cover is provided with a flexible non-metal lining, the outer surfaces of shaft heads at the two ends of the paddle shaft are lined with flexible non-metal, and the paddle blades areassembled and fixed on the paddle shaft through hoops. According to the technical scheme provided by the invention, material wall sticking and scaling are effectively prevented and reduced, large materials and spherical materials are eliminated, the reaction granulator is sealed and environmentally friendly, reaction granulation is sufficient and rapid, high performance and high efficiency of thereaction granulator are guaranteed, and the manufacturing and operating cost of the equipment is reduced.

Description

technical field [0001] The invention relates to the technical field of reaction granulation equipment used in the production of compound fertilizers such as DAP (diammonium phosphate) and MCP (calcium dihydrogen phosphate), in particular to a horizontal paddle reaction granulator. Background technique [0002] The reaction granulator is one of the main equipments in the production of compound fertilizers DAP (diammonium phosphate) and MCP (calcium dihydrogen phosphate). At present, the granulation of compound fertilizers DAP and MCP generally uses rotary cylinder granulators. °, the feed end is high, and the discharge end is low), the driving device rotates the circular cylinder at a low speed (generally lower than 10r / min) through the small gear and the large gear on the outer ring of the circular cylinder. Lined with a rubber plate, the masterbatch enters the rotary cylinder of the granulator and rolls along with it, and the surface of the masterbatch is sprayed with a ne...

AI Technical Summary

Problems solved by technology

[0003] In the actual use of the rotary cylinder granulator, there are the following shortcomings: because the tubular reactor has multiple spray holes or long narrow slit spray holes, the spraying effect is different before and after and the spray holes are easy to block, and the inner and outer layers of the material bed The dispersion of the rolled masterbatch is uneven, which makes it difficult to distribute the neutralized slurry on the surface of the masterbatch in the material bed uniformly, which reduces the coating granulation ratio, the ratio of cohesive granulation and self-granulation is more, and even produces large lumps And spherical materials, affect the contact reaction, reduce the quality and production capacity of granulation

One of the purposes of lining the cylinder with rubber plates is to prevent and reduce material sticking and fouling. However, due to the structural factors of the rotary cylinder granulator, the rubber plates and the cylinder are mostly assembled in sections and connected intermittently to keep the rubber plates constant. Flexible, but the rubber sheet and the material roll with the rotating cylinder, the material sticking to the wall and scaling will fall off and the influence of the rubber sheet's own weight, so that the rubber sheet bears a large tensile force and bending alternating stress, which is easy to cause great damage to the rubber sheet , especially when the material characteristics fluctuate, the operation management response is not timely, and after the occurrence of damp material causes serious material sticking and fouling, it is necessary to stop the machine and manually enter the granulator to remove it forcibly, which is more likely to cause damage to the rubber plate. Not only repair or replacement of the rubber plate Inconvenient, increases operating costs, and also affects overall production capacity

Due to structural reasons, the rotary cylinder granulator often needs to be stopped and discharged completely. It is necessary to manually remove the discharge port cover on the baffle plate to release the remaining material, which cannot be continuously produced; in order to roll out the bulk material and spherical material Due to the granulator and other structural reasons, the rotary cylinder granulator cannot be completely sealed, and the exhaust gas overflow affects environmental protection; the follow-up treatment of large blocks and spherical materials increases energy consumption

In order to expand the production capacity of the rotary cylinder granulator, in addition to strengthening equipment maintenance and operation management, the most important thing is to increase the diameter and length of the cylinder and use larger equipment, so it will occupy a larger plant area and space, and increase the production capacity. Manufacturing cost, energy consumption, maintenance and operation cost, cost performance and environmental protection performance are low

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