Process for producing multielement fertilizer by plant straw ash

Abstract

The invention relates to a plant straw ash multi-element fertilizer manufacturing method that use simple device, low invest, low producing cost. It could supply P, K, Ca, Mg, Fe, Zn, Cu, Mn and Mo to plant. It has high plant efficiency nutrient. It uses ash that is produced by firing, cracking and gasifying the plant straw as main raw material adding inorganic waste pickle liquid, agricultural use organic acid and / or organic solid waste to make the pH value of raw material decrease below 6.0-7.5, fermenting for 1-10 days, adding 3-10% binding agent after drying and smashing to grain finished fertilizer. The invention is especially suited for the ash fertilizing process and commercial process in straw generating process.

Description

technical field

[0001] The invention relates to a method for producing multi-element fertilizer by using plant straw ash residue, especially suitable for the disposal of ash residue generated by burning, pyrolysis, gasification, etc. during the power generation process of straw, and belongs to the solid waste agricultural fertilizer in the field of agricultural environmental protection Processing and Utilization Technology. Background technique

[0002] Plant straw contains combustible elements such as C, H, and S, which can be burned directly or indirectly after pyrolysis and gasification. The calorific value of 1kg of straw is generally 18-21MJ, which is equivalent to 0.61-0.72kg of standard coal. my country has a vast territory and is rich in straw resources. In 2001, the total output of rice, wheat, corn, beans, potatoes, oilseeds, cotton, sugarcane and other eight major crop straws in China reached 596.481 million tons, equivalent to 300.47 million tons of standard coa...

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