CN103319254A - Recycling method of monopotassium phosphate mother liquor produced by double decomposition reaction - Google Patents

Abstract

The invention discloses a recycling method of monopotassium phosphate mother liquor produced by double decomposition reaction. The mother liquor of monopotassium phosphate produced by the double decomposition reaction is recycled to prepare a biological compound fertilizer and be used as an ingredient of culture medium of edible fungi. Thus, the resources are saved; the waste is fully utilized.

Description

A kind of replacement(metathesis)reaction is produced potassium primary phosphate mother liquid recycling method

Technical field

The present invention relates generally to a kind of recycle method, relates in particular to a kind of replacement(metathesis)reaction and produces potassium primary phosphate mother liquid recycling method.

Background technology

Adopting the replacement(metathesis)reaction of energy-conserving and environment-protective solid material to produce potassium primary phosphate, mainly is to carry out replacement(metathesis)reaction by solid material Repone K and monoammonium phosphate, and reaction formula is as follows: NH ₄H ₂PO ₄+ KCL=KH ₂PO ₄+ NH ₄CL

In this production technique, raw material is solid, and is nontoxic, harmless, and byproduct can utilize again.Three-waste free discharge is produced simply, and less input.Produce in the mother liquor of potassium primary phosphate in replacement(metathesis)reaction simultaneously, contain nitrogen, phosphorus, potassium composition, can recycle, reduce resource consumption.

Summary of the invention

The object of the invention just provides a kind of replacement(metathesis)reaction and produces potassium primary phosphate mother liquid recycling method.

The present invention is achieved by the following technical solutions:

A kind of replacement(metathesis)reaction is produced potassium primary phosphate mother liquid recycling method, may further comprise the steps:

(1) described replacement(metathesis)reaction is NH ₄H ₂PO ₄+ KCL=KH ₂PO ₄+ NH ₄CL after concentrated, cooling, crystallization, obtains containing the mother liquor of nitrogen, phosphorus, potassium composition;

(2) in the mother liquor that obtains, add the distiller's dried grain of mother liquor weight 3-5%, the oily native slag of 3-4%, the pomace of 4-5%, the wood fragments bits of 1-2%, the manioc waste of 2-3%, the straw powder of 1-2%, the ferrous sulfate of 4-6%, the ammonium molybdate of 1-2%, the alum powder of 0.2-0.3%, the unslaked lime of 0.1-0.2%, the humic acids of 0.1-0.2%, mixing and stirring, under physical environment air storage 10-12 hour, oven dry back granulation gets composite bio-fertilizer;

(3) in the mother liquor that obtains, add doubly straw powder of mother liquor weight 6-8,2-3 doubly rice bran, the brown sugar of 80-90%, the terra alba of 70-80%, the soybean protein powder of 60-80%, the montmorillonite powder of 10-20%, mixing and stirring, adding concentration again is the wetting properties derosal aqueous solution stirring of 50-60%, make water content reach 60-65%, get culture medium of edible fungus.

Advantage of the present invention is:

The mother liquor of among the present invention replacement(metathesis)reaction being produced potassium primary phosphate recycles utilization, can make composite bio-fertilizer, also can be used as the composition of culture medium of edible fungus, has saved resource, and waste material is fully utilized.

Embodiment

Embodiment 1

A kind of replacement(metathesis)reaction is produced potassium primary phosphate mother liquid recycling method, may further comprise the steps:

(1) described replacement(metathesis)reaction is NH ₄H ₂PO ₄+ KCL=KH ₂PO ₄+ NH ₄CL after concentrated, cooling, crystallization, obtains containing the mother liquor of nitrogen, phosphorus, potassium composition;

(2) in the mother liquor that obtains, add the distiller's dried grain of mother liquor weight 3%, 4% oily native slag, 5% pomace, 1% wood fragments bits, 2% manioc waste, 2% straw powder, 6% ferrous sulfate, 2% ammonium molybdate, 0.3% alum powder, 0.2% unslaked lime, 0.2% humic acids, mixing and stirring, air storage is 12 hours under physical environment, oven dry back granulation gets composite bio-fertilizer;

(3) in the mother liquor that obtains, add 6 times of mother liquor weight the straw powder, 2 times rice bran, 90% brown sugar, 80% terra alba, 80% soybean protein powder, 20% montmorillonite powder, mixing and stirring, adding concentration again and be 60% the wetting properties derosal aqueous solution stirs, make water content reach 65%, get culture medium of edible fungus.

Claims (1)

1. a replacement(metathesis)reaction is produced potassium primary phosphate mother liquid recycling method, it is characterized in that may further comprise the steps:

(1) described replacement(metathesis)reaction is NH ₄H ₂PO ₄+ KCL=KH ₂PO ₄+ NH ₄CL after concentrated, cooling, crystallization, obtains containing the mother liquor of nitrogen, phosphorus, potassium composition;

(2) in the mother liquor that obtains, add the distiller's dried grain of mother liquor weight 3-5%, the oily native slag of 3-4%, the pomace of 4-5%, the wood fragments bits of 1-2%, the manioc waste of 2-3%, the straw powder of 1-2%, the ferrous sulfate of 4-6%, the ammonium molybdate of 1-2%, the alum powder of 0.2-0.3%, the unslaked lime of 0.1-0.2%, the humic acids of 0.1-0.2%, mixing and stirring, under physical environment air storage 10-12 hour, oven dry back granulation gets composite bio-fertilizer;

(3) in the mother liquor that obtains, add doubly straw powder of mother liquor weight 6-8,2-3 doubly rice bran, the brown sugar of 80-90%, the terra alba of 70-80%, the soybean protein powder of 60-80%, the montmorillonite powder of 10-20%, mixing and stirring, adding concentration again is the wetting properties derosal aqueous solution stirring of 50-60%, make water content reach 60-65%, get culture medium of edible fungus.