Fiber chelating type monoammonium phosphate and preparation method thereof

A monoammonium phosphate, chelating technology, applied in the field of phosphate fertilizers, can solve the problem of phosphorus being easily fixed by soil and utilization, and achieve the effects of reducing fixation, solving agglomeration and improving utilization

CN114133275APending Publication Date: 2022-03-04HUBEI NEWYANGFENG FERTILIZER STOCK
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2022-03-04

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Abstract

The invention provides fiber chelating type monoammonium phosphate and a preparation method thereof. The fiber chelating type monoammonium phosphate comprises monoammonium phosphate and chelating type cellulose fiber in a mass ratio of (15-20): 1, wherein the chelating cellulose fiber is obtained by acidifying cellulose fiber with lipoic acid and then carrying out condensation reaction with 2-(diphenylphosphino) ethylamine. The mass ratio of the monoammonium phosphate to the chelating cellulose fibers is 18: 1. The available phosphorus content of the monoammonium phosphate is not less than 60%. The monoammonium phosphate and the chelating cellulose fiber are compounded to prepare the fiber chelating phosphate fertilizer, and the phosphate fertilizer can reduce phosphorus fixation of soil, prevent the adverse consequence that effective phosphorus is massively converted into ineffective phosphorus, improve the utilization of phosphorus by crops, and improve the yield of the crops. And the defect that monoammonium phosphate is easy to cake is overcome.
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Description

technical field

[0001] The invention relates to the field of phosphate fertilizers, in particular to a fiber-chelated monoammonium phosphate and a preparation method thereof. Background technique

[0002] Monoammonium phosphate, also known as ammonium dihydrogen phosphate, is a binary compound fertilizer produced by the neutralization reaction of ammonia and phosphoric acid. It is widely used as a phosphorus source raw material in the field of compound fertilizer production. It is widely used in agricultural and forestry planting to increase the production and income of agricultural products. effect, its social value and market demand are greater.

[0003] The seasonal utilization rate of phosphate fertilizer monoammonium phosphate is only 10% to 25%. Through the systematic analysis of literature research progress, the main reason for the inefficient use of phosphate fertilizer is the fixation of phosphorus by the soil, and the fixation methods include adsorption fixation an...

Examples

Embodiment 1

[0046] A kind of fiber chelating type monoammonium phosphate, comprises the monoammonium phosphate and chelating type cellulose fiber that mass ratio is 18:1; Wherein, chelating type cellulose fiber is after the cellulose fiber is first acidified with lipoic acid, and then It is obtained after condensation reaction with 2-(diphenylphosphino)ethylamine. The available phosphorus content of monoammonium phosphate is not less than 60%, and the total nitrogen content is not less than 12%.

[0047] Cellulose fiber is cellulose obtained by using agricultural waste materials after being treated with inorganic acids. The inorganic acids include at least one of hydrochloric acid, sulfuric acid, nitric acid, citric acid, and oxalic acid. Agricultural waste materials include rice waste after oil extraction, rice husk, At least one of corncobs and wheat husks.

[0048] The preparation method of chelating type cellulose fiber is:

[0049] S1. Weigh the cellulose fiber and mix it with a sodiu...

Embodiment 2

[0057] A kind of fiber chelating type monoammonium phosphate, comprising the monoammonium phosphate and chelating type cellulose fiber that mass ratio is 15:1; It is obtained after condensation reaction with 2-(diphenylphosphino)ethylamine. The available phosphorus content of monoammonium phosphate is not less than 60%, and the total nitrogen content is not less than 12%.

[0058] Cellulose fiber is cellulose obtained by using agricultural waste materials after being treated with inorganic acids. The inorganic acids include at least one of hydrochloric acid, sulfuric acid, nitric acid, citric acid, and oxalic acid. Agricultural waste materials include rice waste after oil extraction, rice husk, At least one of corncobs and wheat husks.

[0059] The preparation method of chelating type cellulose fiber is:

[0060] S1. Weigh the cellulose fibers and mix them with sodium hydroxide solution or potassium hydroxide solution with a concentration of 0.01mol / L. After dispersing evenly...

Embodiment 3

[0068] A kind of fiber chelating type monoammonium phosphate, comprises the monoammonium phosphate and chelating type cellulose fiber that mass ratio is 20:1; Wherein, chelating type cellulose fiber is after the cellulose fiber is first acidified with lipoic acid, and then It is obtained after condensation reaction with 2-(diphenylphosphino)ethylamine. The available phosphorus content of monoammonium phosphate is not less than 60%, and the total nitrogen content is not less than 12%.

[0069] Cellulose fiber is cellulose obtained by using agricultural waste materials after being treated with inorganic acids. The inorganic acids include at least one of hydrochloric acid, sulfuric acid, nitric acid, citric acid, and oxalic acid. Agricultural waste materials include rice waste after oil extraction, rice husk, At least one of corncobs and wheat husks.

[0070] The preparation method of chelating type cellulose fiber is:

[0071] S1. Weigh the cellulose fiber and mix it with 0.1mo...