Method and device for producing organic calcium potassium liquid fertilizer

A liquid fertilizer and organic calcium technology, applied in the field of liquid fertilizer, can solve the problems of poor solubility and stability, and achieve the effects of maintaining stability, improving utilization rate and application value, and improving land conditions

Pending Publication Date: 2018-08-21
TIANJI COAL CHEM IND GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problems of poor solubility and stability of liquid fertilizers in the prior art, the invention discloses a method and device for producing organic calcium-potassium liquid fertilizers. After the pH value and other parameters are adjusted, it is mixed with the main raw material to obtain a liquid fertilizer with high solubility and stability.

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  • Method and device for producing organic calcium potassium liquid fertilizer

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Effect test

Embodiment 1

[0033] A method for producing organic potassium calcium liquid fertilizer, which is to dissolve and react calcium nitrate mother liquor with 58% nitric acid, which is the waste of nitrophosphate fertilizer production, to generate calcium nitrate mother liquor, and adjust the pH value of the supernatant of calcium nitrate mother liquor to 8 with milk of lime Finally, pressurize again to 0.65MPa to filter out acid insoluble matter, obtain 50% calcium nitrate clear liquid main material; stir and dissolve the process condensate evaporated by potassium fulvic acid, potassium nitrate, amino acid and calcium ammonium nitrate, and Adjust the pH value to 6.5, ferment and dissolve at 45°C for 40 minutes to obtain auxiliary materials; mix the main materials and auxiliary materials, and adjust the pH value to 5 to obtain a crude liquid, pressurize the crude liquid to 0.6 MPa and then press Filtration, the finished clear liquid of the organic potassium calcium liquid fertilizer obtained by ...

Embodiment 2

[0041] A kind of method of producing organic potassium calcium liquid fertilizer, is to produce calcium nitrate mother liquor by dissolving and reacting calcium carbonate slag, the waste of nitrophosphate fertilizer production, with 60% nitric acid; Then pressurize to 0.6MPa to filter out the acid insoluble matter to obtain 55% calcium nitrate clear liquid main material; stir the process condensate evaporated from biochemical potassium fulvate, calcium nitrate, potassium nitrate, magnesium nitrate and calcium ammonium nitrate Dissolve, adjust the pH value to 6.2, ferment and dissolve at 35°C for 40 minutes to obtain auxiliary materials; mix the main material and auxiliary materials, adjust the pH value to 6.5 to obtain a crude liquid, and pressurize the crude liquid to 0.55MPa Afterwards, pressure filtration is carried out, and the finished clear liquid obtained by pressure filtration to obtain the organic potassium calcium liquid fertilizer is tanked and stored.

[0042] Wher...

Embodiment 3

[0045] A method for producing organic potassium-calcium liquid fertilizer, comprising dissolving and reacting calcium carbonate slag, waste from nitrophosphate fertilizer production, with nitric acid to generate calcium nitrate mother liquor, and adjusting the pH value of the supernatant of calcium nitrate mother liquor to 7.8 with milk of lime, and then adding Press to 0.7MPa to filter out acid-insoluble matter to obtain 45% calcium nitrate clear liquid main material; stir and dissolve biochemical potassium fulvate, calcium nitrate, potassium nitrate, magnesium nitrate, etc. and process condensate evaporated from calcium ammonium nitrate , adjust the pH value to 5.8, ferment and dissolve at 42°C for 40 minutes to obtain auxiliary materials; mix the main material and auxiliary materials, and adjust the pH value to 10 to obtain a crude liquid, pressurize the crude liquid to 0.65MPa Press filtration is carried out, and the finished product clear liquid of the organic potassium ca...

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Abstract

The invention discloses a method and a device for producing an organic calcium potassium liquid fertilizer. The method comprises the following steps: settling a nitric phosphate produced waste such ascalcium carbonate residue with nitric acid, after filtering, mixing with dissolved solid microelement modifiers, and carrying out filter pressing to obtain the finished product. The device comprisesa main material treating system, an auxiliary material treating system and a mixed material canning system, wherein the main material treating system comprises an acid hydrolysis tank, a pH regulatingtank, a calcium nitrate liquid filtering machine and a main material tank; the auxiliary material treating system comprises a solid funnel, a metering conveyer belt, a solving liquid storage tank, adissolving tank and an auxiliary material storage tank; and the mixed material canning system comprises a mixing tank, a pressure filter, a finished product liquid storage tank and a canning machine connected with a compression air pump. After the auxiliary materials are dissolved respectively and the parameters such as concentration, pressure and pH value are regulated, the auxiliary materials are mixed with main raw materials, so that the liquid fertilizer with preferable solubleness and relatively high stability is obtained.

Description

technical field [0001] The invention belongs to the technical field of chemical production, and relates to a liquid fertilizer, in particular to a method and a device for producing an organic calcium-potassium liquid fertilizer by using a calcium ammonium nitrate liquid mother liquor. Background technique [0002] Liquid fertilizer is one of the development trends of the chemical fertilizer industry in the world today, and the development of water-soluble fertilizer has entered a golden period. Liquid fertilizers are widely used in foreign countries. The amount of liquid fertilizers in the United States accounts for 55% of the total fertilizer consumption, with an annual consumption of 16 million tons; Israel uses 100% of liquid fertilizers. China's urea ammonium nitrate solution water-soluble fertilizer production is developing well, with a total annual production capacity of more than 13 million tons. The development of liquid fertilizers in my country is relatively late....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05F17/00C05G3/80
CPCC05B17/00C05F17/00C05G5/20C05G3/80C05C1/00C05C3/00C05C5/02C05C5/04C05C11/00C05D1/00C05D5/00C05D9/02C05F11/02Y02W30/40
Inventor 刘逐涛牛天亮周劳锁邢王英张世华申庆斌李慧敏
Owner TIANJI COAL CHEM IND GROUP
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