Method for preparing compound amino acid organic liquid fertilizer

Abstract

The invention provides a method for preparing a compound amino acid organic liquid fertilizer. The method takes cheap fermentation industrial waste water as raw material and carries out filtration, evaporation concentration, primary evaporation crystallization, second evaporation crystallization, cooling crystallization, standing, salting-out and other process steps, thereby obtaining the high-valued and high-fertilizer efficiency compound amino acid organic liquid fertilizer. The method does not occupy high-priced limited soybean meal, blood meal, starch, other acid and basic chemical medicaments and other resources and greatly reduces the product cost; meanwhile, water-insoluble substances produced by filtration during the process can be used as protein supplement feeds for ruminants, sulfate and amino acid organic solid fertilizers are good fertilizers, and the method leads the fermentation industrial waste water to be completely recovered and utilized, has wide range of applications and is not only suitable to be completed on a small-investment evaporator at normal pressure, but also suitable to be completed on an advanced energy-saving consumption-reducing vacuum evaporation crystallization device at negative pressure; furthermore, the method does not emit any substance to the outside and does not produce any pollution.

Description

technical field

[0001] The invention relates to a method for preparing a compound amino acid organic liquid fertilizer, in particular to a method for producing a compound amino acid organic liquid fertilizer by using fermentation industrial waste liquid, which belongs to the technical field of chemical fertilizer industry. Background technique

[0002] Amino acid liquid fertilizer is a new low-salt index organic nitrogen fertilizer, which is safe to use and has excellent fertilizer efficiency. However, the amino acid liquid fertilizer produced by the existing technology is not only complicated in production process, but also the cost of amino acid liquid fertilizer remains high due to the high cost of raw materials. Therefore, although amino acid liquid fertilizer has excellent fertilizer performance, the high production cost makes it difficult to popularize and apply amino acid liquid fertilizer on a large scale. With the launch of the concept of green organic agriculture,...

Examples

Embodiment 1

[0027] A. The chemical composition is N 6.03%, SO 3 15.26%, organic matter 5.18%, the lysine waste liquid of Chuanhua Ajinomoto Co., Ltd. was filtered with a conventional vacuum filter, and the filter residue and filtrate were separated;

[0028] B, 5000 grams of above-mentioned filtrates are added in conventional evaporator, under the positive pressure condition that pressure is 0.05MPa, carry out evaporation and concentration, evaporate moisture content 1350 grams, obtain 3650 grams of concentrates;

[0029] C, sending the above-mentioned concentrated solution into a conventional vacuum evaporation crystallizer, and carrying out a vacuum evaporation crystallization under the negative pressure condition of -0.045MPa in a pressure, steaming out 1250 grams of water content, and obtaining 2400 grams of a primary crystallization mixed slurry;

[0030] D, 2400 grams of the above-mentioned primary crystallization mixed slurry are sent in the conventional centrifuge to carry out ce...

Embodiment 2

[0035] A. The chemical composition is N 6.03%, SO 3 15.26%, organic matter 5.18%, the lysine waste liquid of Chuanhua Ajinomoto Co., Ltd. was filtered with a conventional vacuum filter, and the filter residue and filtrate were separated;

[0036] B, 5000 grams of above-mentioned filtrates are added in conventional evaporator, carry out evaporation concentration under normal pressure condition, evaporate moisture content 1400 grams, obtain 3600 grams of concentrates;

[0037] C, above-mentioned concentrated solution is sent in the conventional evaporative crystallizer, carries out evaporative crystallization once under normal pressure condition, evaporates moisture content 1150 grams, obtains 2450 grams of primary crystallization mixed slurry;

[0038] D, 2450 grams of the above-mentioned primary crystallization mixed slurry are sent to a conventional centrifuge for centrifugal liquid-solid separation, and 890 grams of sulfate and 1560 grams of primary mother liquor are isolat...

Embodiment 3

[0043]A. The chemical composition is N 6.03%, SO 3 15.26%, organic matter 5.18%, the lysine waste liquid of Chuanhua Ajinomoto Co., Ltd. was filtered with a conventional vacuum filter, and the filter residue and filtrate were separated;

[0044] B, 5000 grams of above-mentioned filtrates are added in conventional evaporator, under the positive pressure condition that pressure is 0.03MPa, carry out evaporation and concentration, evaporate moisture content 1350 grams, obtain 3650 grams of concentrates;

[0045] C. Send the above-mentioned concentrated solution into a conventional vacuum evaporation crystallizer, and carry out a vacuum evaporation crystallization under the negative pressure condition of -0.03MPa, steam out 1250 grams of water, and obtain 2400 grams of primary crystallization mixed slurry;

[0046] D, 2400 grams of the above-mentioned primary crystallization mixed slurry are sent to a conventional centrifuge for centrifugal liquid-solid separation, and 905 grams ...

technical field

[0001] The invention relates to a method for preparing a compound amino acid organic liquid fertilizer, in particular to a method for producing a compound amino acid organic liquid fertilizer by using fermentation industrial waste liquid, which belongs to the technical field of chemical fertilizer industry. Background technique

[0002] Amino acid liquid fertilizer is a new low-salt index organic nitrogen fertilizer, which is safe to use and has excellent fertilizer efficiency. However, the amino acid liquid fertilizer produced by the existing technology is not only complicated in production process, but also the cost of amino acid liquid fertilizer remains high due to the high cost of raw materials. Therefore, although amino acid liquid fertilizer has excellent fertilizer performance, the high production cost makes it difficult to popularize and apply amino acid liquid fertilizer on a large scale. With the launch of the concept of green organic agriculture,...

Examples

Embodiment 1

[0027] A. The chemical composition is N 6.03%, SO 3 15.26%, organic matter 5.18%, the lysine waste liquid of Chuanhua Ajinomoto Co., Ltd. was filtered with a conventional vacuum filter, and the filter residue and filtrate were separated;

[0028] B, 5000 grams of above-mentioned filtrates are added in conventional evaporator, under the positive pressure condition that pressure is 0.05MPa, carry out evaporation and concentration, evaporate moisture content 1350 grams, obtain 3650 grams of concentrates;

[0029] C, sending the above-mentioned concentrated solution into a conventional vacuum evaporation crystallizer, and carrying out a vacuum evaporation crystallization under the negative pressure condition of -0.045MPa in a pressure, steaming out 1250 grams of water content, and obtaining 2400 grams of a primary crystallization mixed slurry;

[0030] D, 2400 grams of the above-mentioned primary crystallization mixed slurry are sent in the conventional centrifuge to carry out ce...

Embodiment 2

[0035] A. The chemical composition is N 6.03%, SO 3 15.26%, organic matter 5.18%, the lysine waste liquid of Chuanhua Ajinomoto Co., Ltd. was filtered with a conventional vacuum filter, and the filter residue and filtrate were separated;

[0036] B, 5000 grams of above-mentioned filtrates are added in conventional evaporator, carry out evaporation concentration under normal pressure condition, evaporate moisture content 1400 grams, obtain 3600 grams of concentrates;

[0037] C, above-mentioned concentrated solution is sent in the conventional evaporative crystallizer, carries out evaporative crystallization once under normal pressure condition, evaporates moisture content 1150 grams, obtains 2450 grams of primary crystallization mixed slurry;

[0038] D, 2450 grams of the above-mentioned primary crystallization mixed slurry are sent to a conventional centrifuge for centrifugal liquid-solid separation, and 890 grams of sulfate and 1560 grams of primary mother liquor are isolat...

Embodiment 3

[0043]A. The chemical composition is N 6.03%, SO 3 15.26%, organic matter 5.18%, the lysine waste liquid of Chuanhua Ajinomoto Co., Ltd. was filtered with a conventional vacuum filter, and the filter residue and filtrate were separated;

[0044] B, 5000 grams of above-mentioned filtrates are added in conventional evaporator, under the positive pressure condition that pressure is 0.03MPa, carry out evaporation and concentration, evaporate moisture content 1350 grams, obtain 3650 grams of concentrates;

[0045] C. Send the above-mentioned concentrated solution into a conventional vacuum evaporation crystallizer, and carry out a vacuum evaporation crystallization under the negative pressure condition of -0.03MPa, steam out 1250 grams of water, and obtain 2400 grams of primary crystallization mixed slurry;

[0046] D, 2400 grams of the above-mentioned primary crystallization mixed slurry are sent to a conventional centrifuge for centrifugal liquid-solid separation, and 905 grams ...