0.2-5T/H Multifunctional Premix Feed Mill In Vietnam

Origin of Multifunctional premix feed mill In Vietnam

Since the original project was a rented factory building, the factory area was limited, and the factory layout and environment could no longer meet the company's production capacity needs. Therefore, the Vietnamese customer's feed company relocated the feed factory to adapt to market development.

After the relocation is completed, the premix feed mill In Vietnam project will reach an annual production scale of 100,000 tons of additive premixed feed, including aquatic compound premix, pig compound premix, poultry compound premix, ruminant compound premix and corresponding animals Various types of trace elements and vitamin premixes.

All factories and ancillary buildings in the new factory area will be newly built, and 2 vitamin, trace element and compound premixed feed processing production lines and their supporting facilities will be built at the same time.

After the production line of this project is completed, it will mainly carry out pre-dilution, screening, mixing, packaging and other processes for the product, and does not involve the fermentation process.

• Construction nature: new construction (relocation)
• Total project investment: US$2 million
• Project area: 12,000m2.
• Construction content and scale: This project will build all factory buildings, office buildings and ancillary buildings in the new factory area, and build 2 vitamins, trace elements and compound premixed feed processing production lines and their supporting facilities. The products cover 12 kinds of premixed products. The design The production capacity is 100,000 tons/year.
• Power consumption: 500,000 kwh
• Water consumption: 500 tons
• Air consumption: 1000 m³
• Number of employees: After the relocation of this project is completed, the labor quota will be 15 people.
• Working system: The annual working time is 300 days, 1 shift, 8 hours per shift.

Project composition

The total investment of this premix feed mill In Vietnam project is US$2 million to build production workshops, warehouses, office buildings, canteens and supporting buildings. The project components and main environmental issues are shown in the table below.

Product solutions

After the premix feed mill In Vietnam project construction is completed, the factory product plan is shown in the table below:

Comparison of product solutions before and after project reconstruction

Premix feed production Process design

The main production process of this premix feed mill In Vietnam project is to transport the raw materials directly to the raw material warehouse through vehicles, and then make the finished premixed feed through dilution, screening and mixing processes.

The project has 2 production lines, located in the main workshop in the middle of the site, with a total of 7 floors. It mainly produces vitamins, trace elements and compound premixed feed.

Process Description:

1. Pre-dilution of trace elements, vitamins, etc.:
   Various monomeric vitamins are pre-diluted twice as small materials by the premixer according to the proportion to form semi-finished products, pre-processed trace elements and vitamins, and are lifted to the small material feeding hopper through a bucket elevator.
2. Preliminary cleaning screen:
   open the pulse bag dust collector, put the required carrier raw materials into the large bag feeding port vibrating screen for screening. After the powder is initially screened, it is transported to the sealed self-cleaning bucket elevator via a closed scraper conveyor.
   After the drawer-type screening machine screens out different fineness, the iron in it is absorbed by the permanent magnet cylinder, and then lifted to the rotating distributor by the bucket elevator, and distributed to the corresponding raw material bin.
   During the initial cleaning and screening process, separate larger particles, iron and other impurities, and return the sifted material to the feed hopper for re-screening.
3. Batching and mixing:
   According to the formula, the computer controls the batching scale, and the required carrier raw materials are transported to the batching scale through a closed pipeline according to a certain proportion, and then enter the closed twin-shaft paddle mixer to mix evenly, and at the same time turn on the pulse dust removal .
   The pre-treated trace elements and vitamins are put into the small material feeding hopper in order according to the formula and proportion. After the feeding is completed, they are mixed to form various additive premixes.
4. Automatic packaging:
   After mixing, put the premix into the finished product bin, turn on the pulse dust collector, and use a computer-controlled automatic quantitative packaging scale to perform packaging operations. At the same time, the products are inspected, and trace elements and vitamins are re-added to products that fail the inspection.
5. Warehousing:
   Warehouse the packaged products for sale.

Main premix feed production equipment list

This premix feed mill In Vietnam project is a technical transformation project. The main production equipment and parameters are shown in the table below:

Raw and auxiliary material consumption

The main raw and auxiliary material consumption of this premix feed mill In Vietnam project is shown in the table below:

Introduction to raw and auxiliary materials:

• Calcium dihydrogen phosphate:
  Calcium dihydrogen phosphate, an inorganic compound, is a colorless triclinic flake, granular or crystalline powder with a relative density of 2.22 (16°C).
  It is slightly hygroscopic, easily soluble in hydrochloric acid and nitric acid, slightly soluble in cold water, and almost insoluble in ethanol, widely used as feed additives for aquaculture animals and livestock and poultry breeding animals, as leavening agents, dough conditioners, buffers, nutritional supplements, emulsifiers, stabilizers and other quality improvers.
  The calcium dihydrogen phosphate used in this project complies with the "Feed Additive Dicalcium Phosphate" (relevant technical standards).
• Rice bran:
  The crude fiber is obtained by crushing the rice husk removed during the rice hulling process.
• Medical stone:
  Medical stone is a natural silicate mineral. The main chemical component of medical stone is inorganic aluminosilicate. These include SiO2, Al2O3, Fe2O3, FeO, MgO, CaO, K2O, Na2O, TiO2, P2O5, MnO, etc., and also contain all the major elements needed by animals, such as: K, Na, Ca, Mg, Cu, Mo and other trace elements elements and rare earth elements.
• Zeolite powder:
  Zeolite powder is made from finely ground natural zeolite rock and is light green or white in color. Zeolite has all the basic conditions for being used as a carrier and diluent for additive premixes. Zeolite has a neutral pH between 7 and 7.5, and its water content is only 3.4 to 3.9%.
  It is not susceptible to moisture and contains trace amounts of inorganic salts containing crystal water. The blending of ingredients can absorb moisture and enhance the fluidity of the feed. The calcium dihydrogen phosphate used in this project complies with the relevant technical standards of "Feed Grade Zeolite Powder".
• Additives:
  Additives are small or trace substances added during feed production, processing and use, including additives for pigs, poultry, ruminants, and aquatic animals.
  They mainly contain minerals, vitamins, and trace elements (Fe, Cu, Mn, Zn, Mg ), amino acids, growth promoters, antioxidants, antifungal agents, etc., are semi-finished products of compound feeds and can be used to produce full-price compound feeds and concentrated feeds.
  The dosage is very small (the amount added in compound feeds is generally 0.5% to 3 %), but it has great effects, such as supplementing nutrition, promoting animal growth, preventing and treating diseases, and improving the quality of animal products.

Factory layout of premix feed mill In Vietnam

This premix feed production line In Vietnam project is a relocation and expansion project. The original feed factory buildings and related equipment will be demolished. The project will build new production workshops and office buildings. The basic principles of project layout are as follows:

1. On the premise of meeting the production process flow, the functional divisions must be clear. The layout of the building should meet the requirements of the premix production process, ensure the continuity of the production process, make the operation assembly line the shortest and the production most convenient.
2. Carry out reasonable arrangements according to the production process to separate the flow of people and logistics, and separate raw materials and finished products.
3. The definition of production area and workshop layout shall strictly comply with the requirements of current national explosion protection, fire prevention, safety, health and other regulations.

According to the general layout of the premix feed mill In Vietnam project, the project office building is located on the southwest side of the site, the raw material and finished product warehouses are located in the middle of the site, and the main production workshop is located in the middle of the factory warehouse, far away from residents on the west and south sides, which can reduce the impact of project noise and exhaust gas on the surrounding areas.

At the same time, the production process mainly includes ingredients, feeding, screening, mixing, packaging, etc., which produces less air pollutants.

Moreover, the office building of this project is located in the cross-wind direction of the production workshop, so it will have less environmental impact. Overall, the layout of each production workshop in the project facilitates production, and the transportation in each section is reasonably organized, which can reduce the impact on surrounding sensitive points.

Environmental management

Exhaust gas

Dust

Source of pollution: Dust in this premix feed mill In Vietnam project is mainly generated from feeding, batching, screening, mixing, packaging and other processes, and the production processes are all located in the main workshop of this project.

During the project processing, feeding, screening, mixing, packaging and other processes are all in a closed space. A small amount of dust will be generated only when the raw materials are fed and put in and out. The pollution production coefficient of compound feed in the premixed feed product selection coefficient form is multiplied by the adjustment coefficient of 1.2. Therefore, the pollution coefficient of this project is 0.0492.

This premix feed mill In Vietnam project has a total of 2 production lines, producing a total of 100,000 tons of additive premix per year. The dust generation volume in the main workshop of the project is 4.92t/a, and the generation rate is 2.05kg/h (the annual working time is 300 days, 8 Hour).

Control measures: Each production line's feeding, batching, screening, mixing, packaging machine and other dust-producing positions are equipped with gas collection devices to collect dust. After collection, it is processed by pulse-type bag dust collectors (10 sets in total) matched with each equipment. , and finally discharged through a 15m-high exhaust pipe P1.

The collection efficiency of the dust collector is 95%, the processing efficiency of the pulse bag dust collector is 98%, and the total air volume of the pulse bag dust collector fan in the main workshop is 17,400m3/h. After calculation, the amount of dust collected and processed by the pulse bag dust collector device is 4.58t/a, and the organized emission amount is 0.09t/a.

This part of the dust is processed by the pulse bag dust collector and passes through the 15m high exhaust gas Barrel P1 discharges. In addition, the amount of dust that does not enter the pulse bag dust collector device is 0.25t/a, and this part of the dust is discharged through unorganized emissions.

Generator combustion exhaust gas

This premix feed mill In Vietnam project is equipped with a diesel generator set as an emergency power source in the standby generator room. The generator set uses diesel as fuel, which will produce a small amount of smoke, NOx, SO2 and other pollutants during use.

Treatment measures: After the combustion exhaust gas of the generator is processed by the built-in smoke and dust removal device, it is collected by the exhaust system and led to the roof through the ventilation duct for discharge.

Since the combustion of 0# diesel produces less pollution, the frequency of use of the generator is extremely low, and it has its own smoke and dust removal device. As long as it is operated strictly according to the requirements and the combustion conditions are well controlled, the main pollutants in the combustion exhaust gas, such as smoke, NOx, and SO2, can be eliminated.

Achieve emission standards. At the same time, because the backup generator is only used during power outages, it has a low probability of use, a short use time, and intermittent emissions, so it has little impact on the surrounding air quality.

Noise

During the operation of the premix feed mill In Vietnam project, the noise source is mainly from the operation of production equipment in the main workshop. Based on the characteristics of the project’s noise sources, the project plans to take the following noise prevention and control measures:

• Select low-noise equipment that meets national standards and conduct regular equipment maintenance to ensure the normal operation of the equipment and reduce faulty noise emissions.
• For equipment such as high-noise vibrating screens, mixers, air compressors, pulse bag dust collectors and fans to set up vibration reduction foundations, measures such as platform vibration reduction, rubber vibration reduction joints and shock absorption pads can be taken; try to use heavy foundations Then place the vibration isolation material between the concrete block and the ground. The vibration isolation material should be a material with greater damping, make a flexible connection, and install a muffler to reduce the impact of vibration.
• Optimize the equipment layout, arrange all production equipment in the workshop, and use the factory building for sound insulation; rationally arrange the factory floor plan, effectively use distance attenuation, and achieve factory boundary noise emission standards.
• Carry out greening in the factory area and plant evergreen trees around the production workshop and factory boundaries to form a sound-insulating green belt.

After taking the above control measures, the noise can be effectively reduced. After the sound insulation and distance attenuation of the factory building, the noise at the factory boundary can meet the "Environmental Noise Emission Standard for Industrial Enterprises at the Boundary" and achieve emission standards.

Solid waste

The solid waste generated by this premix feed mill In Vietnam project mainly includes impurities screened out by primary cleaning, waste packaging materials, office and domestic waste, dust collected by dust collectors, waste particles, septic tank sludge, waste engine oil, oily gloves, and laboratory waste liquid.

• Screening impurities:
  The impurities produced by primary cleaning and screening of raw and auxiliary materials are mainly small stones, iron filings, etc. The amount produced is 0.1t/a, which belongs to general solid waste and is collected and stored centrally. It is regularly entrusted to sanitation together with domestic waste. Department clearance and proper disposal.
• Waste packaging materials:
  Waste packaging materials will be generated during the storage and packaging process of bagged products in the project. According to the information provided by the owner, the amount of waste packaging materials generated is about 5.0t/a, sold to an external waste recycling company.
• Office domestic waste:
  There are 15 employees in the premix feed mill In Vietnam project. The domestic waste generated by the employees is calculated as 0.5kg/person per day. Then the daily domestic waste generated by the project employees is 7.5kg/d, and the annual domestic waste is 2.25t.
  After using trash can collection , hand it over to the environmental sanitation department for clearing and proper disposal.
• Dust collector collects dust:
  The project is equipped with pulse bag dust collectors in each dust-generating link. The bag dust collection capacity is 4.58t/a. All the collected dust can be returned to the production process.
• Unqualified raw materials:
  According to the premix feed mill In Vietnam project engineering analysis and the information provided by the owner, the amount of unqualified raw materials produced in this project is about 5.0t/a, which will be downgraded or returned to the supplier.
• Inspection of unqualified products:
  The amount of unqualified products produced in this project is about 5.0t/a, which will be downgraded according to the formula of the technical department.
• Septic tank sludge:
  The septic tank will produce sludge during operation, and the amount produced is about 0.2t/a. The sludge will be removed regularly and handed over to agricultural companies for fertilizer free of charge.
• Waste engine oil:
  The machine repair room generates a small amount of waste engine oil, oily waste gloves and other wastes due to equipment maintenance and repair.
  Waste engine oil belongs to the waste mineral oil and mineral oil-containing waste/non-specific industries/900- in the "Hazardous Waste List" 214-08 Waste engine oil, brake oil, automatic transmission oil, gear oil and other waste oil generated during the maintenance of vehicles, ships and other machinery. The production volume is 0.1t/a, which is regularly delivered to qualified units for processing.
• Oil-containing gloves:
  The amount of oil-containing waste gloves produced is about 0.02t/a, which belongs to the abandoned oil-containing rags and labor protection supplies numbered 900-041-49 in the hazardous waste exemption management list.
  The exemption links are all links, and the exemption content is: The entire process is not managed as hazardous waste. Therefore, oil-containing gloves must be collected separately according to the exemption requirements and then disposed of as general industrial solid waste (can be disposed together with domestic waste).
• Laboratory waste liquid:
  The laboratory waste liquid in this premix feed mill In Vietnam project is mainly wastewater from cleaning instruments. The discharge volume of laboratory waste liquid is 0.005m3/d, totaling 1.5t/a.
  This part of the waste liquid mainly contains waste acid (HW34) and waste alkali (HW35). It should be classified and collected with special instruments in the laboratory, then stored in a temporary hazardous waste storage room, and recycled and processed by relevant qualified units on a regular basis.

In addition to the premix feed mill In Vietnam project, Richi Machinery have also established premix feed factory projects in Thailand, El Salvador, Indonesia, India, Malaysia and other countries. If you want to start a premix processing business, contact us to customize the most suitable solution!

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