Method for producing water-soluble ammonium polyphosphate by using industrial ammonium phosphate-ammonia gas
A technology of ammonium polyphosphate and ammonium phosphate salt, applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., can solve the problems of insoluble in water and high cost, and achieve the effect of low cost and obvious economic benefits.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0020] Mix 500kg of industrial monoammonium phosphate and 40kg of oxalic acid in the first reactor, stir and melt at 195°C, and then control the reaction temperature at 215-235°C and the reaction time in 180-300 minutes in a continuous series of 5 reactors. At this time, industrial monoammonium phosphate is condensed into acid ammonium polyphosphate.
[0021] The ammoniation neutralization reactor is heated to 150°C, and ammonia gas is fed into the atomization reactor through a compressor to ensure that the ammonia partial pressure in the atomization reactor is 0.6 MPa. The liquid acidic ammonium polyphosphate is sprayed from the upper port of the ammoniation reaction kettle, and the reaction time is 60 to 180 minutes. The ammonium polyphosphate product of molten state is extruded from reaction kettle lower port, pulverizes, and 455kg obtains white water-soluble ammonium polyphosphate powder product.
Embodiment 2
[0023] Mix 500kg of industrial monoammonium phosphate and 20kg of formic acid in the first reactor, stir and melt at 195°C, and then control the reaction temperature at 220-250°C and the reaction time in 180-300 minutes in a continuous series of 5 reactors. At this time, industrial monoammonium phosphate is condensed into acid ammonium polyphosphate.
[0024] The ammoniation neutralization reactor is heated to 150°C, and ammonia gas is fed into the atomization reactor through a compressor to ensure that the ammonia partial pressure in the atomization reactor is 1MPa. The liquid acidic ammonium polyphosphate is sprayed from the upper port of the ammoniation reaction kettle, and the reaction time is 60 to 180 minutes. The ammonium polyphosphate product of molten state is extruded from reaction kettle lower port, pulverized, and 430kg obtains white water-soluble ammonium polyphosphate powder product.
Embodiment 3
[0026] Mix 500kg of industrial monoammonium phosphate and 40kg of ammonium formate in the first reaction kettle, stir and melt at 200°C, and then control the reaction temperature at 200-230°C in the continuous 5-stage series reaction kettle, and the reaction time is 180-300 minutes . At this time, industrial monoammonium phosphate is condensed into acid ammonium polyphosphate.
[0027] The ammoniation neutralization reactor is heated to 150°C, and ammonia gas is fed into the atomization reactor through a compressor to ensure that the partial pressure of ammonia in the atomization reactor is 0.2 MPa. The liquid acidic ammonium polyphosphate is sprayed from the upper port of the ammoniation reaction kettle, and the reaction time is 60 to 180 minutes. The ammonium polyphosphate product of molten state is extruded from reaction kettle lower port, pulverizes, and 500kg obtains white water-soluble ammonium polyphosphate powder product.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More