Production method for diammonium hydrogen phosphate

A technology of diammonium hydrogen phosphate and a production method, which is applied in the direction of phosphate, phosphorus oxyacid, etc., can solve the problems of high production cost, long process route, and large energy consumption, and achieve short production cycle, short process flow, and low energy consumption. can low effect
CN104016322AInactive Publication Date: 2014-09-03GUIYANG KAILIN FERTILIZER CO LTD
5 Cites 27 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GUIYANG KAILIN FERTILIZER CO LTD
Publication Date
2014-09-03
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention relates to the technical field of chemical engineering, and particularly relates to a production method for diammonium hydrogen phosphate. A diammonium hydrogen phosphate product is prepared by subjecting a high pure urea phosphate solution and ammonia to a double decomposition reaction, reacting for 20-60 min under stirring and at a temperature of 50-80 DEG C by controlling a pH value at 7.8-8.2. Physical and chemical indexes of the diammonium hydrogen phosphate product are as follows: the total nutrient content of diammonium hydrogen phosphate is higher than 74%; the content of total nitrogen is 21.02-21.20%; the content of phosphorus pentoxide is 53.0-53.52%; moisture content is 0.25-0.32%; the content of water insoluble substances is 0.087-0.096%; and the content of fluoride is 0.1-0.14%. The diammonium hydrogen phosphate product fully meets an industrial first level product standard.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of chemical industry, in particular to a production method of diammonium hydrogen phosphate. Background technique

[0002] With the progress of human society, industry and agriculture have developed by leaps and bounds, and the awareness of safety and environmental protection has been further improved. Industrial grade diammonium hydrogen phosphate is widely used in fire protection, drip irrigation fertilizer, medicine and food. At present, the production of industrial-grade diammonium phosphate generally adopts thermal phosphoric acid or purified phosphoric acid process; the production of thermal phosphoric acid consumes a lot of energy, high cost, and heavy pollution; The impurity content is high, so it cannot be used as an industrial product, and the purification process route of wet-process phosphoric acid is long, the investment in equipment construction is large, and the cost is high; high question. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More