Method for preparing organic fertilizer by using aminonitrile waste liquid

An organic fertilizer and aminonitrile technology, which is applied to the preparation of organic fertilizers, organic fertilizers, and the treatment of biological organic parts. Reuse, good social benefits, and solve the effect of difficult disposal

Inactive Publication Date: 2009-03-25
四川省天然气化工研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the operation cost is high, the equipment investment is large, and the industrial practical value is not large in the tr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] Example 1:

[0034] Add 50kg of sodium hydroxide to 1000kg of iminodiacetonitrile production waste liquid (total cyanide 50000mg / kg), mix evenly, use a pump to send the waste liquid to a heater for heating, adjust the steam feed volume, and heat it to 85°C , Enter the mixing reactor, control the pressure at 0.3MPa, then add 800kg of straw powder, stir and mix for 30 minutes to prepare 1850kg of base fertilizer, and send it to the base fertilizer warehouse.

[0035] Add 5000kg of base fertilizer to the fermentation tank, stir in 500kg of bran, 50kg of monoammonium phosphate, 50kg of potassium chloride, add tap water, adjust the moisture to about 45%, adjust the pH to 6 with sulfuric acid, and make the starting mixture by heating or cooling The temperature was 15°C, then 11kg of coryneform bacteria were added, mixed evenly and placed for fermentation. After 10 days, the fermentation was completed, and the fermented product was 6200kg, which contained 11.5% humic acid and 6.5%...

Example Embodiment

[0037]Example 2:

[0038] Add 55kg of sodium hydroxide to 1000kg of ethylenediaminetetraacetonitrile production waste liquid (total cyanide 42000mg / kg), mix evenly, use a pump to send the waste liquid to the heater for heating, adjust the steam feed volume, and heat to 70 After ℃, enter the mixing reactor, the pressure is controlled at 0.1MPa, and then 850kg of straw powder is added, and after mixing and reacting for 30 minutes, 1900kg of base fertilizer is prepared and sent to the base fertilizer warehouse.

[0039] Add 5000kg of base fertilizer to the fermentation tank, add 500kg of bran, 50kg of monoammonium phosphate, 50kg of potassium chloride, add tap water, adjust the moisture to about 48%, adjust the pH to 6.2 with sulfuric acid, and start by heating or cooling The temperature of the mixture was 25°C, and 11kg of coryneform bacteria were added, mixed evenly and placed for fermentation. After 8 days, the fermentation was completed to obtain 6250kg of fermented product, cont...

Example Embodiment

[0041] Example 3:

[0042] The iminodiacetonitrile production waste liquid (total cyanide 48000mg / kg) is continuously sent to the heater to be heated by the waste liquid pump at a rate of 1000kg / h. By adjusting the size of the steam feed volume, it is heated to 80°C, and 30kg After mixing with ammonia per hour, it enters the mixing reactor and mixes with 800kg of straw powder for 10 minutes, the pressure is controlled at 0.2MPa, and the material is discharged continuously to obtain 1830kg of base fertilizer and send it to the base fertilizer warehouse.

[0043] Add 5000kg of the prepared base fertilizer to the fermentation tank, add 500kg of bran, 50kg of monoammonium phosphate, 50kg of potassium chloride, add tap water, adjust the moisture to about 42%, adjust the pH to 6.5 with sulfuric acid, and heat or cool down The temperature of the starting mixture was 25° C., 11 kg of coryneform bacteria were added, and the mixture was evenly mixed and allowed to stand for fermentation. Af...

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PUM

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Abstract

The invention provides a method for preparing an organic fertilizer by utilizing amino-nitrile waste liquor, which comprises the steps: catalyst and dispersant are added in the associated amino-nitrile waste liquor generated in the preparation of iminodiacetonitrile, aminoacetonitrile, ammonium dinitrile and EDTW, and mixed for reaction at the temperature of 30 to 150 DEG C and the pressure of 0 to 1.0MPa, so as to obtain base fertilizer which is added with biological strains for fermentation of 7 to 15 days at the temperature of 10 to 60 DEG C after nutrient allocation; and then hydrolysis is carried out to the base fertilizer to obtain a raw fertilizer which is carried out with nutrient allocation, pelleting and drying to be prepared into the organic fertilizer. The method can reduce the treatment cost, effectively utilizes the resources of the water liquor, and prepare the organic fertilizer by utilizing the amino-nitrile waste liquor.

Description

Technical field: [0001] The invention belongs to the technical field of production of nitrile compounds, and in particular relates to the preparation of organic fertilizers from aminonitrile production waste liquid produced during the preparation of nitrile compounds such as iminodiacetonitrile, glycinenitrile, nitrilotrinitrile and ethylenediaminetetraacetonitrile Methods. Background technique: [0002] At present, in the production of iminodiacetonitrile, glycinenitrile, nitrilonitrile and ethylenediaminetetraacetonitrile with hydrocyanic acid or hydroxyacetonitrile, a certain amount of waste liquid that cannot be recycled is accompanied by a certain amount of waste liquid generated during the preparation process. The waste liquid generally contains aminonitrile substances such as iminodiacetonitrile, glycinenitrile, aminotriacetonitrile and ethylenediaminetetraacetonitrile, and contains inorganic ammonium salts, cyanides and nitrile polymers. The composition of the waste ...

Claims

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Application Information

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IPC IPC(8): C05F17/00C05F7/00
CPCY02A40/20Y02W30/40
Inventor 龙志成唐劲松
Owner 四川省天然气化工研究院
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