Steam rotary drying system for ammonium salt and method for preparing ammonium salt

Abstract

The invention provides a steam rotary drying system for ammonium salt and a method for preparing the ammonium salt. The steam rotary drying system is used in an ammonium salt drying process for the first time, a novel energy-saving and environmental-friendly ammonium salt drying technology is proposed, and the ammonium salt steam rotary drying system with the less moisture, low product breakage rate, high thermal efficiency, low power consumption, stable operation and energy conservation and the method for preparing the ammonium salt are provided. The steam rotary drying system for the ammonium salt comprises a feeding device, a steam rotary dryer, a conveying device, a vibration conveying cooling sieving machine and a tail gas dedusting device. The steam rotary dryer comprises a feeding cover, a rotary cylinder, a discharge cover, a transmission device and multiple heat exchange tubes arranged in the rotary cylinder. The hot air inlet of the steam rotary dryer is in a countercurrent mode.

Description

technical field [0001] The invention relates to drying equipment for ammonium salts and a drying method for ammonium salts, in particular to equipment for drying ammonium salts using a steam rotary drying system and a method for preparing dry ammonium salts. Background technique [0002] With the development of our society, the demand for ammonium salts in civil and industrial applications is also increasing. The drying of ammonium salt is a process with high energy consumption. Continuously improving and improving the level of drying equipment in the ammonium salt industry will definitely play an important role in promoting the development of my country's ammonium salt industry. With the rapid development of technology and technology in my country's ammonium salt industry, higher requirements are put forward for drying: deep drying is required to prevent materials from agglomerating during long-term storage; energy consumption needs to be reduced, thereby reducing operating...

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Problems solved by technology

[0004] (1) Energy consumption: large amount of exhaust gas, difficult recovery of exhaust heat, low heat utilization rate, high steam consumption; fluidization power is provided by wind, high power consumption, large air volume and pressure, and large power of supporting fans

[0005] (2) Environmental protection: large exhaust gas volume, high pressure for subsequent dust removal; large amount of water vapor and dust in the drying workshop, poor environment; large air volume, high pressure head, high speed and high noise of the fan

[0006] (3) Product quality: The material is violently fluidized, the crushing rate is high, the product shape is poor, and there is a lot of powder; a large amount of tail gas carries a large amount of powder, which is collected by the cyclone, resulting in a large amount of powder products, which are difficult to sell; the integrated structure of drying and cooling, the material The cooling effect is poor, and the temperature of the discharged product is high

[0007] (4) Equipment operation: Fan failure, fluidization stops, system paralyzed; manual block material is required, operation is cumbersome and difficult to manage

[0009] (6) The material sticks to the wall, agglomerates, and the thermal efficiency is low

[0010] (7) The ammonium content of tail gas is too high

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