CN1075312A - The production method of humic acid liquid compound fertilizer - Google Patents

Abstract

A kind of production method of humic acid liquid compound fertilizer mainly is that papermaking wastewater is produced humic acid liquid compound fertilizer through synthetic and total synthetic reaction synthetic, zinc humic acid synthetic, potassium humate of acidification reaction, precipitation extraction, (OH) root solubilizing reaction, ammonium humate phosphorus.The present invention can make full use of the humic acids in the papermaking wastewater, reduces farmland, water quality and environmental pollution, and used production unit and technology are also fairly simple, and 12 kilograms of its effects of liquid composite fertilizer that use the inventive method is produced are suitable with 50 kilograms chemical fertilizer effect.

Description

The production method of humic acid liquid compound fertilizer

The present invention relates to the production method of a kind of production method of chemical fertilizer, particularly a kind of humic acid liquid compound fertilizer.

Compound manure is the main developing direction of world Fertilizer industry, and the compound prescription fertilizer that states such as U.S., day, moral produce and use has accounted for 70% of chemical fertilizer ultimate production, and wherein nitrogenous fertilizer accounts for 80%, and phosphorus, potash fertilizer account for 90%.In recent years, the chemical fertilizer industry development of China is very fast, ultimate production has accounted for the 3rd of the world, some areas, south have begun to produce, use liquid composite fertilizer, its main technique is by certain proportioning with urea, ammonium nitrate, add water in the input reactor and make nitrogen solution, add iron, zinc, manganese, copper, boron, molybdenum trace element and humic acids again in nitrogen solution, this explained hereafter cost is higher.

At present, the Northeast still uses chemical fertilizer in a large number in the proportion of crop planting process, and its consequence is that soil alkalizes year by year, hardens, and the organic matter in the soil lacks, and production cost also improves year by year, and Higher output is not accompanied by a higher income; On the other hand, the paper mill gives off many waste liquids that contain a large amount of humic acidss every day, and humic acids can effectively prevent alkalization of soils and harden, after a large amount of papermaking wastewater dischargings, not only waste many humic acidss, also caused the pollution of farmland, water quality and environment.

The purpose of this invention is to provide a kind of production method of utilizing papermaking wastewater to produce liquid composite fertilizer.

The object of the present invention is achieved like this: get the dense black waste liquid under the papermaking roll, its pH value is produced according to following step then generally at 12-14:

(1), acidification reaction: in pH value is the papermaking wastewater of 12-14, splash into the vitriol oil of 1-2%, when pH value is a reaction end during for 1-2.

(2), precipitation is extracted: with cotton-shaped solution precipitation 1-2 hour after the acidifying, get rid of clear liquor and dry throw out, make its water content reach 13-15%, make humic acids.

(3), (OH) root solubilizing reaction: in Manufactured humic acids, add 9-10% ammoniacal liquor (NH4CH) or 3-4% caustic soda, stir under the normal temperature, make fulvo acid.

(4), ammonium humate phosphorus is synthetic: get the fulvo acid of 23-24%, add 16-17% diammonium phosphate [(NH4) 2HPO4] again, stir hydrolysis and carried out replacement(metathesis)reaction 20-30 minute, make ammonium humate phosphorus.

(5), potassium humate synthetic: get the fulvo acid of 22-23%, add vitriolate of tartar 6-7%(K2SO4 again), stir hydrolysis and carried out replacement(metathesis)reaction 20-30 minute, make potassium humate.

(6), zinc humic acid is synthetic: get the fulvo acid of 22.5-23%, add the zinc sulfate (ZnSO4 7H2C) of 7-8% again, stir hydrolysis and carried out replacement(metathesis)reaction 20-30 minute, make zinc humic acid.

(7), building-up reactions: get the phosphorus humic acid phosphorus 39-41% that has produced, it is even that potassium humate 28-30%, zinc humic acid 29.5-31% drop in the reactor stirring at normal temperature, promptly makes humic acid liquid composite fertilizer.

Humic acid liquid compound fertilizer production technique of the present invention has following advantage:

1, can make full use of humic acids in the papermaking wastewater, reduce the pollution of farmland, water quality and environment.

2, production unit and technology are simple.

Below will be further described the inventive method by embodiment.

Embodiment 1

With pH value is after 3000 kilograms of 14 papermaking wastewaters are put into reactor, adds content again and be 60 kilograms of 93% the vitriol oils (H2SO4), stir while splashing into, and when pH value is 1 the acidification reaction terminal point; Cotton-shaped solution after the acidifying is precipitated 2 hours in settling bath, get rid of clear liquor, the centrifuge dripping throw out makes its water content reach 14%, makes 1000 kilograms of humic acidss that are insoluble in water; After 1000 kilograms humic acids put into reactor, splash into content again and be 100 kilograms of 16% ammoniacal liquor, stir, make fulvo acid; Each 240 kilograms of fulvo acids that drop into, add 170 kilograms of diammonium phosphate [(NH4) 2HPO4] respectively again by 230 kilograms in reactor; 60 kilograms of vitriolate of tartar (K2SO4), 70 kilograms in zinc sulfate (ZnSO4 7H2O) stirs hydrolysis 20-30 minute, produces 410 kilograms in ammonium humate phosphorus respectively, 290 kilograms of potassium humates, 290 kilograms of zinc humic acids.Manufactured ammonium humate phosphorus, potassium humate, zinc humic acid are put in the reactor, promptly made 990 kilograms of humic acid liquid composite fertilizers after stirring.

Embodiment 2

Respectively 239.5 kilograms of Manufactured fulvo acids, 229 kilograms, 229.5 kilograms are put in the reactor, added 170.5 kilograms of diammonium phosphate [(NH4) 2HPO4] more respectively; 60.5 kilograms of vitriolate of tartar (K2SO4), 70.5 kilograms in zinc sulfate (ZnSO4 7H2O), stir hydrolysis 20-30 minute, produce 410 kilograms in ammonium humate phosphorus respectively, 290 kilograms of potassium humates, 300 kilograms of zinc humic acids, other technology can get 1000 kilograms of humic acid liquid compound fertilizers with embodiment 1.

Claims (2)

1, a kind of production method of humic acid liquid compound fertilizer is at first got the dense black waste liquid under the papermaking roll, and its pH value is characterized in that producing according to following step generally at 12-14:

(1), acidification reaction: in pH value is the papermaking wastewater of 12-14, splash into the vitriol oil of 1-2%, when pH value is a reaction end during for 1-2;

(2), precipitation is extracted: with cotton-shaped solution precipitation 1-2 hour after the acidifying, get rid of clear liquor and dry throw out, make its water content reach 13-15%, make humic acids;

(3), (OH) root solubilizing reaction: in Manufactured humic acids, add 9-10% ammoniacal liquor (NH4CH) or 3-4% caustic soda, stir under the normal temperature, make fulvo acid;

(4), ammonium humate phosphorus is synthetic: get the fulvo acid of 23-24%, add 16-17% diammonium phosphate [(NH4) 2HPO4] again, stir hydrolysis and carried out replacement(metathesis)reaction 20-30 minute, make ammonium humate phosphorus;

(5), potassium humate is synthetic: get the fulvo acid of 22-23%, add vitriolate of tartar 6-7% (K2SO4) again, stir hydrolysis and carried out replacement(metathesis)reaction 20-30 minute, make potassium humate;

(6), zinc humic acid is synthetic: get the fulvo acid of 22.5-23%, add the zinc sulfate (ZnSO47H2C) of 7-8% again, stir hydrolysis and carried out replacement(metathesis)reaction 20-30 minute, make zinc humic acid;

(7), building-up reactions: get the phosphorus humic acid phosphorus 39-41% that has produced, it is even that potassium humate 28-30%, zinc humic acid 29.5-31% drop in the reactor stirring at normal temperature, promptly makes humic acid liquid composite fertilizer.

2, method according to claim 1 is characterized in that the vitriol oil concentration that adds in the acidification reaction is 90-98%.