The feasibility of the high return high quality commercial fish feed mill for floating fish and shrimp feed production

Aquafeed is an integral part of aquaculture and the most important part of the aquaculture process.

With the stricter and stricter bans on marine juvenile fish in various countries in the future, the price of chilled fish will increase and even be replaced. Moreover, the penetration rate of aquafeed is relatively low, compared with poultry feed and pig feed. Compared with the penetration rate of industrial feed, there is a lot of room for development.

Therefore, it will be the future trend for aquaculture to gradually increase the proportion of feed used. In addition to the promotion of the popularization of aquafeed by environmental protection policies, the advantages of aquafeed itself will inevitably encourage farmers to gradually favor it.

In order to meet the market demand, this 6-7t/h commercial fish feed mill project client, Qingdao Sai Aode Biotechnology Co., Ltd., invested 30 million yuan (4710000USD) in Jiaozhou City to build a commercial aqua shrimp fish feed mill for compound feed production.

Raw materials feeding

The 6-7 tons per hour new build shrimp fish feed mill plant project covers an area of ​​19999.08m² and plans to build two workshops with a construction area of ​​9111.4m². Using the existing office building and workshop of 5945.04m², two new fish shrimp compound feed production lines will be built.

After the commercial fish feed mill for extruded floating fish feed and shrimp prawn feed pellets project is completed, the annual output of complete formula compound feed for fish and shrimp will be 20,000 tons.

Overview of the automatic high quality commercial fish feed mill for floating fish and shrimp feed production

• Project Name: Compound Fish Feed Miller Production Project of Qingdao Sai Aode Biotechnology Co., Ltd.
• Construction Nature: New Build
• Products and production capacity: It is planned to build two compound feed processing lines, with an annual output of 20,000 tons of complete formula compound feed for fish and shrimp.
• Construction time: start in August 2019 and put into production in October 2020.
• Labor quota and working system: The prawn fish feed mill project runs for 300d a year, and implements a one-shift system, each 10h. The labor quota is 20 people, and there are no dormitories and canteens in the aqua feed mill factory. According to the fish feed miller's work system, it can be calculated that the output of the aqua fish shrimp feed mill project is 1666t/m, 66t/d, 6.6t/h (6-7t/h).

  

  Construction site of the floating fish feed mill

Construction content and layout of the 6-7t/h high return high quality commercial fish feed mill

The client of this 6-7 tons per hour high quality commercial fish feed mill project directly purchased an idle aqua feed factory area, built a new workshop and a finished product warehouse in the open space of the aqua feed factory area, and transformed the existing workshop into a raw material warehouse.

The automatic shrimp and floating fish feed mill project covers an area of ​​19,999.08m², and plans to build two new workshops with a construction area of ​​9,111.4m², using the existing office building and workshop of 5,945.04m². The main works, auxiliary works, public works and environmental protection works are classified as follows:

Parking lot and finished product warehouse of floating fish feed mill

Consumption of raw and auxiliary materials of the automatic good quality commercial fish feed mill for floating fish and shrimp feed production

Main fish feed mill machine of the automatic good quality commercial fish feed company for floating fish and shrimp feed production

Commercial fish feed mill process flow diagram for 6-7t/h high quality fish and shrimp feed production

1. Fish meal, soybean meal and flour are all packed in bags and transported by forklift to the feeding port. After manually unpacking, they are put into the lower hopper.

2. After initial cleaning and sieving to remove impurities and permanent magnet drum to remove iron, they enter the batching bin, and pass the central control according to the fish feed formula. The system accurately batches to the fish feed mixer for first batching and mixing.

3. The mixed raw materials are transported to the ultra-fine pulverizer by the screw conveyor for ultra-fine secondary pulverization. Various auxiliary materials and fish oil (or soybean oil) are added to the pulverized raw materials for secondary ingredients mixing. After the mixing is completed, the raw materials enter in the fish floating feed extruder machime conditioner.
   

4. Then add water and steam (the steam is provided by a gas steam generator, the temperature of the material reaches 100℃-130℃, and the moisture reaches 28%), and the temperature rises during the extrusion process of the twin-screw fish feed extruder for floating feed.

   And the physical and chemical properties of the material occur starch gelatinization and protein denaturation, the instantaneous pressure of extrusion from the die hole drops sharply, the water in the feed is converted from liquid to gaseous state, and it is emitted from the feed to cause the material to expand and form an extruded feed.
   

5. The extruded feed is being dried (gas hot air oven), and the dryer removes the moisture of the feed through the flowing hot air to reduce the moisture of the shrimp and fish feed.

6. After drying, it enters the silo, and the oil pump in the oil injection system provides pressure to atomize the liquid oil and spray it evenly on the fish pellet feed. The fish pellet feed is sent to the cooler and cooled by natural air.

7. After cooling, the feed is screened, and the qualified products will be automatically weighed and packaged by the extruded feed packaging system if they meet the pellet size;
   

As an integral part of the fish feed mill production system, dust collectors in the feed industry are not used as environmental protection facilities. Particulate matter is collected by the fish feed mill system's own dust collector and used as raw material, which is not a solid waste.

Utilities of the automatic good quality commercial fish feed mill for floating fish and shrimp feed production

Water supply——6-7tph fish and shrimp feed mill

• The production water during the operation of the 6-7 tons commercial shrimp fish feed mill project is mainly water for conditioning and tempering, water for natural gas steam generator, water for resin regeneration, water for circulating cooling of extruder, water for deodorization device, and domestic water for employees.
• The water consumption for conditioning and tempering of the 6-7t/h commercial shrimp fish feed mill project is 4000m3/a.

  

• The steam generated by the natural gas steam generator of the commercial shrimp fish feed mill project is passed through the pipeline into the conditioner for ingredients. The steam consumption is 2000t/a. In addition, the steam in the pipeline has a loss of about 20t/a, and the generator needs to discharge 3m3/a of sewage regularly.

  The generator is equipped with a resin tank, and the water needs to be softened by the resin tank before use. The water output efficiency of the resin tank is 85%, and the calculated water consumption of the natural gas generator is 2380m3/a.

  The resin tank needs to be periodically washed and regenerated with saturated brine, and the water consumption of this part is 1m3/a. In summary, the water consumption of the natural gas steam generator is 2381m3/a.

  
  Project site and surroundings

• The extruder machine to make fish feed of the 6-7t/h commercial shrimp fish feed mill project is equipped with a circulating cooling water pump and a water tank, and the cooling water is recycled. Due to the loss of evaporation and leakage, fresh water needs to be added regularly. The annual consumption of fresh water in this part is 2m3/a.

• The water in the deodorization device is recycled and used without discharge. Due to the loss of evaporation and dripping, fresh water needs to be added regularly. The annual water consumption of this part is 70m3/a.

  
  Project site and surroundings

• 20 new workers will be added to the 6-7t/h commercial shrimp fish feed mill project. There are no canteens and dormitories in the shrimp fish aqua feed factory.

• The total fresh water consumption during the operation period of the 6-7t/h commercial shrimp fish feed mill project is 6753m3/a, which is provided by the water supply network of Shuijiaolai Street, which can meet the water requirements of the shrimp fish feed mill plant.

Drainage——6-7tph fish and shrimp feed mill

• The 6-7t/h commercial fish and shrimp feed mill project adopts the rainwater and sewage separation system. Rainwater is collected by the rainwater system in the shrimp fish feed mill plant and then enters the nearby ditches.

  During the 6-7t/h commercial fish and shrimp feed mill project operation period, the sewage from the steam generator is 3m3/a, the regeneration wastewater from the resin tank is 0.9m3/a, and the concentrated water from the resin tank is 357m3/, used for plant greening and road dust suppression, not discharged;

  
  Fish feed mill layout

• The water in the deodorization device is recycled and not discharged;

• In addition, employees produce domestic sewage, which is 255m3/a based on 85% of the water consumption. At this stage, the wastewater is temporarily stored in a septic tank and then regularly shipped out to be used as agricultural fertilizer;

• After the local Sewage Treatment Plant in the area is officially put into operation and the sewage pipe network is connected, the pre-treated domestic sewage in the septic tank will be discharged into the local sewage treatment plant through the municipal pipe network for centralized treatment.

  The septic tank and sewage pipe network of the 6-7t/h commercial fish and shrimp feed mill project have been treated with anti-seepage, which can effectively prevent the leakage of waste water and have little impact on the surrounding water environment.

  

Power——6-7tph fish and shrimp feed mill

The electricity for the 6-7t/h commercial fish and shrimp feed mill project is provided by Jiaozhou Power Grid, which can meet the electricity requirements.

Gas——6-7tph fish and shrimp feed mill

The natural gas for the 6-7t/h commercial fish and shrimp feed mill project is provided by the local gas company through pipeline.

Air supply——6-7tph fish and shrimp feed mill

The steam required for 6-7t/h commercial fish and shrimp feed mill production is provided by two 0.5t/h gas steam generators.

Heating——6-7tph fish and shrimp feed mill

The 6-7t/h commercial fish and shrimp feed mill workshop does not need to be heated, and the office is heated by air conditioners in winter.