1. Organic manure fermentation process
This process is designed based on the current problems
such as large amounts of organic waste discarded causing widespread environmental secondary pollution. This fermentation technology is different from the traditional anaerobic fermentation (pool). Using aerobic fermentation, adding bacteria, fermentation under the condition of temperature control and oxygenation it realizes fast rotten fermentation. The fermentation process has no smell, fermentation is high efficiency and can be quickly converted organic waste materials to organic fertilizer. Thus truly recycles waste materials to realize ecological cycles.
Advantages: All-weather operation, low operation cost, less equipment investment, high conversion efficiency.
Major equipment: Loaders, turning machine, the displacement car.
Using raw materials categories: Breeding livestock feces (cattle, sheep, pigs, chicken manure, etc.), industrial organic wastes (bagasse, cassava dregs, slag starch, sugar mud, sewage sludge, etc.).
Capacity: A single set can produce 100000-150000 tons/year.
The compound fertilizer producing process and the corresponding equipments
2. The disc/steam drum granulation process
Disk/steam drum granulation process is actually two kinds of process. According to its different granules machine it can be subdivided into disk granulation process and steam drum granulation process. According to the situation of raw material can also be subdivided into drum + double disk granulating process. The main difference is between the granulators, the following processes such as drying, cooling and other auxiliary equipment are the same.
(1)The disc granulating process
Advantages: The granulation capability is strong, product appearance is fruity and adaptable to wide range of raw materials.
Weakness: The production is small, needs add accessories during granulation, unable to produce high nutrient fertilizer. It is more suitable for small fertilizer production enterprises.
(2) The drum granulating process
Advantages: The production is large with small dust and can produce high nutrient fertilizer in the case of adding steam.
Weakness: It adapts to narrow range of the raw material and its granulation ability falls dramatically under the condition of not adding steam. Because of various types of raw materials to produce fertilizer and the collocation between raw materials is also varied, so the specific choice of pelleting machine depends on the determined processing plan with the specific raw material conditions.
(3)The main equipments
The granulating disc and drum granulator, dryer,
cooling machine, coating machine, belt conveyor, crusher, screening machine, mixing machine, packaging machine, etc.
(4) Adaptable fertilizer categories
The inorganic single nutrient fertilizer, inorganic multiple nutrients fertilizer, organic fertilizer, biological organic fertilizer, organic & inorganic fertilizer.
One single line can produce1-100000 tons/year.
3．The urea-based spray granulation process
The process is that we first melt urea with high temperature
then use the molten urea instead of granulation of water to spray into the granulator to the granulation material layer for granulation. Because urea liquid has very good viscosity and urea liquid will be gradually solidified with cold air thus can reduce the amount of the granulation water, therefore, using this technology can improve the efficiency of granulation of the pelleting machine and increase production. At the same time, because urea is a kind of high nitrogen fertilizer, so adopting this process can produce high content fertilizer. It is a kind of wide adaptability of the fertilizer granulation process.
Advantages: High yield, can produce high nutrient fertilizer, grain smooth, round shape and material applicable range.
Weakness: Slightly higher production cost
Major equipment: Urea melting system, disc or drum granulator, dryer, cooling machine, screening machine, coating machine, packaging machine, etc.
Adaptable fertilizer: Inorganic fertilizer, organic inorganic fertilizer.
Capacity: Single line can produce 30000-100000 tons/year.
4. Amino acid ammoniating granulation process
The two kinds of process are mainly used for producing
inorganic fertilizer. The principle of amino acid ammoniating process is to use the method of liquid ammonia reaction with dilute sulfuric acid to generate high temperature liquid ammonium sulfate pulp instead of part of the amount of water and steam, and ammonium sulfate slurry itself has certain viscosity, can significantly improve the efficiency of the granulator’s granulation, increase production and greatly reduce the production cost. On the basis of the method of amino acid process the ammoniating production process is increased a set of potassium chloride dechlorination process so it can directly produce potassium sulfate compound fertilizer within one production line and further reduce the production cost.
Advantages: High yield, low production cost, it can produce high nutrient compound fertilizer.
Weakness: Must use liquid ammonia, sulfuric acid so it has a certain risk. It is difficult passed across the examination and approval.
Major equipment: Ammonia station, acid tank, mixed acid system, reactor, drum granulator, dryer, cooling machine, screening machine, coating machine and packaging machine, etc.
Adaptable fertilizer: Inorganic compound fertilizer.
Capacity: A single line can produce 5-150000 tons/year.
5. The tower granulation process
This process is most suitable for producing high
concentration inorganic fertilizer. The principle of this process is using the characteristics of rapid solidification of urea liquid when it meets cold, after urea particle heating melting, according to a certain amount of proportioning adding phosphorus, potassium and other raw materials to molten urea after mixing sprayed to tower body by granulator and let the material slurry droplets cold solidification in the process of falling from the top of the tower, thus forming a circular particles. Through the collection, screening, coating and a series of process get made products after packing.
Advantages: High yield, low production cost, high nutrient content, beautiful appearance and easy to identify.
Weakness: Must use urea, large investment, not suitable for high phosphorus nutrient of compound fertilizer production.
Major equipment: The tower body, the melting pot, hoisting machine, granulating machine, cooling machine, screening machine, coating machine, packaging machine, etc.
Adaptable fertilizer types: High nutrient inorganic fertilizer.
Capacity: A single tower can produce 80000-150000 tons/year.
6.Urea formaldehyde process production line
This process is with urea and formaldehyde under the condition of pH8 production dimethyl urea, then in PH4.75 under the condition of gradually adding urea condensation reaction and the molar ratio of formaldehyde and urea is 1:3, after drying, cooling and sieving processes of the production of urea formaldehyde and the reaction of urea formaldehyde solution as granulation material slurry is injected into compound fertilizer granulator material layer and in the granulator rolling under the action of grain, and the final product packaging warehousing.
Advantages: it is a chemical compound fertilizer with high yield, high grain strength, good commercial property and high reputation in China.
Main equipment: urea formaldehyde preparation system, granulation machine, drying machine and cooling machine, etc.
Main raw materials: formaldehyde, urea, ammonium phosphate, potassium sulfate, etc.
Capacity: 5-15 million tons / year
7.Sulfuric acid urea production process
This is the process of the urea and sulfuric acid according to a certain proportion of reaction stability properties of urea sulfuric acid solution, then the sulfuric acid urea material slurry spray to granulating machine bed surface, by high solution viscosity and granulating machine of other nitrogen, phosphorus, potassium based materials bonded into particle by drying, sieving, cold but, package, and other normal production process, and ultimately the formation of compound fertilizer products.
Urea sulfuric acid compound fertilizer process is my company exclusive development of compound fertilizer production method, and the process can be utilized for ordinary complex mixed fertilizer production device upgrade, the technology has energy saving, good environmental protection effect, low investment, high yield, operation has the advantage of low cost, good fertilizer products, diversification of product variety, process adaptability is strong.
At the same time on the basis of existing production equipment can also be carried out on the basis of upgrading, only need to add urea sulfuric acid preparation system, transport equipment and ancillary pipes, valves, instrumentation can be.
Advantage: it is a chemical compound fertilizer with high yield, high grain strength and good commercial property.
Main equipment: urea sulfate preparation equipment, drum granulator, drying machine, cooling machine etc.
Main raw materials: sulfuric acid, urea, ammonium phosphate, potassium sulfate, etc.
Capacity: 5-15 million tons / year
8.Whole water soluble fertilizer production line
Water soluble fertilizer is with the popularity of a large area of the drip irrigation, sprinkler irrigation and fertilizer integration of the concept of development and the rapid development of a new type of fertilizer, the fertilizer for powder products, with nutrient content high (also called a lot of elements fertilizer, water soluble and quick fertilizer effect and so on the remarkable characteristic, also this type of fertilizer because of raw materials is extremely easy to absorb moisture, so in the production process need full closed, summer humidity weather production, also need to additional dehumidifiers to prevent fertilizer absorb moisture caking.
Main equipment: electronic batching machine, closed conveyor, high efficiency mixer, electronic packaging scale etc..
The main raw material of urea, potassium dihydrogen phosphate, phosphoric acid, potassium sulfate and two amine
Capacity: 1-5 tons / time
9. Extrusion granulation process
The principle of this process is that one or more powder
raw materials can be squeezed into particles through the mould, with powerful extrusion pressure. The principle is simple and less equipment used.
Advantage: Cover an area small, less investment.
Weakness: Relatively high production cost, poor grain appearance and low yield.
Major equipment: Extrusion pelleting machine, screening machine, conveyor, packing machine, etc.
Adaptable fertilizer: Inorganic fertilizer, organic fertilizer, organic inorganic compound mixing fertilizer.
Capacity: One set can produce 1-3 tons/hr.