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Disposable corn composite fertilizer and producing technique thereof

A compound fertilizer, one-time technology, applied in the direction of urea compound fertilizer, nitrogen fertilizer, potash fertilizer, etc., can solve the problems of reducing the fertilizer efficiency of one-time fertilization, failing to achieve one-time fertilization, etc., so as to improve the utilization rate of nitrogen fertilizer and reduce the loss of nitrogen. Effect

Inactive Publication Date: 2008-02-13
河北天人化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although the disposable corn compound fertilizer currently on the market increases the nitrogen content of the fertilizer, the fertilizer will be converted into ammonia, carbon dioxide, and even nitrogen oxides in the soil under the action of nitrifying bacteria and urease, and will volatilize into the atmosphere. loss, thus reducing the fertilizer efficiency of one-time fertilization, often not reaching the effect of one-time fertilization

Method used

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  • Disposable corn composite fertilizer and producing technique thereof
  • Disposable corn composite fertilizer and producing technique thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1 (the weight ratio of liquid ammonia and urea is 1:6.0; 231 kilograms of 45% phosphoric acid; 0.6 kilograms of amidine thiourea, 1.4 kilograms of thiourea)

[0034] The formula of the disposable corn compound fertilizer of the present invention is as follows:

[0035] Table 1

[0036] Liquid ammonia

(kg)

Urea

(kg)

Phosphoric acid

(kg)

Potassium Chloride

(kg)

amidinothiourea

(kg)

Thiourea

(kg)

Compound fertilizer 1

97.8

408.1

231.0

202.49

0.6

1.4

[0037] Its preparation steps are as follows:

[0038] The concentration is 45% (in P 2 O 5 Gauge) of dilute phosphoric acid was pressurized to 1MPa by phosphoric acid pump, and entered into the tubular reactor at 8.0t / h after metering control by flowmeter and regulating valve. Sulfuric acid with a concentration of 98% was pressurized to 1MPa by a sulfuric acid pump, and then entered into the tubular...

example 2

[0048] Example 2: (the weight ratio of liquid ammonia and urea is 1:6.2; 208 kg of 50% phosphoric acid; 1.0 kg of amidinothiourea, 1.0 kg of thiourea)

[0049] The formula of the disposable corn compound fertilizer of the present invention is as follows:

[0050] table 3

[0051] Liquid ammonia

(kg)

Urea

(kg)

Phosphoric acid

(kg)

Potassium Chloride

(kg)

amidinothiourea

(kg)

Thiourea

(kg)

Compound fertilizer 2

69.1

428.7

208

202.49

1.0

1.0

[0052] Its preparation steps are as follows:

[0053] The concentration is 50% (in P 2 O 5 Gauge) of dilute phosphoric acid was pressurized to 1MPa by phosphoric acid pump, and entered into the tubular reactor at 8.0t / h after metering control by flowmeter and regulating valve. Sulfuric acid with a concentration of 98% was pressurized to 1MPa by a sulfuric acid pump, and then entered into the tubular reactor at a rate of 6...

Embodiment 3

[0063] Embodiment 3 (the weight ratio of liquid ammonia and urea is 1:5.0; 208 kilograms of 50% phosphoric acid; 0.8 kilograms of amidine thiourea, 1.2 kilograms of thiourea)

[0064] The formula of the disposable corn compound fertilizer of the present invention is as follows:

[0065] table 5

[0066] Liquid ammonia

[0067] Its preparation steps are as follows:

[0068] The concentration is 50% (in P 2 O 5 Gauge) of dilute phosphoric acid was pressurized to 1MPa by phosphoric acid pump, and entered into the tubular reactor at 8.0t / h after metering control by flowmeter and regulating valve. Sulfuric acid with a concentration of 98% was pressurized to 1MPa by a sulfuric acid pump, and then entered into the tubular reactor at a rate of 6.0t / h after being metered and controlled by a flow meter and a regulating valve. Liquid ammonia (or gaseous ammonia, with a concentration of 99.5%) was metered and controlled by a flow meter and a regulating valve and entered th...

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Abstract

The present invention relates to a one-off mealie composite fertilizer and the corresponding produce process, which comprises a nitrogen nutrient with 26 percent molar percent, a phosphor nutrient with 10 percent molar percent calculated by P2O5 and a kalium nutrient with 12 percent molar percent calculated by K2O. The fertilizer is characterized in that: the fertilizer also comprises a nitrogenous fertilizer additive with 0.2 percent molar percent. The nitrogenous fertilizer additive in the one-off mealie composite fertilizer can restrict the hydrolyzing for carbamide nitrogen in the fertilizer; the fertilizer releases slowly. So the effect is to decrease the losing of nitrogen element, to protect the environment and to enhance the utilization ratio of the nitrogen element.

Description

technical field [0001] The invention relates to a disposable corn compound fertilizer and a production process thereof, in particular to a disposable corn compound fertilizer containing a nitrogen fertilizer synergist and a production process thereof. Background technique [0002] At present, the waste of chemical fertilizers in the world is quite serious. According to reports, the utilization rate of nitrogen fertilizer in my country is about 35%-60%, the utilization rate of phosphate fertilizer is about 10%-15%, and the utilization rate of potassium fertilizer is about 30%-60%. The waste of chemical fertilizers has attracted great attention from countries all over the world. There are many reasons for the low utilization rate of chemical fertilizers, and the reasons for the low utilization rate of various nutrient elements are also different. Rainwater loss and soil sandification lead to fertilizer leakage is one of the reasons. Crops have different nutrient requirements...

Claims

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Application Information

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IPC IPC(8): C05G1/00C05C9/00C05D1/02C05G3/08C05G5/00C05G3/90
CPCY02P60/21
Inventor 沈兵王金铬王宝安贾可梁宏江张天山
Owner 河北天人化工股份有限公司
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