Parboiled Rice Equipment: A Comprehensive Guide to Production and Advantages

In the realm of rice processing, parboiled rice has emerged as a popular choice due to its numerous health benefits and unique characteristics. This article delves into the world of parboiled rice equipment, exploring its production process, advantages, and the key factors to consider when selecting the right equipment.

1. What is Parboiled Rice?

Parboiled rice is the third type of rice recognized by the Food and Agriculture Organization of the United Nations, according to the processing technology. It is produced by subjecting rice to a series of hydrothermal treatments, including soaking, cooking, and drying, before dehulling and milling. This process results in a rice product with higher nutritional value, better cooking properties, and longer shelf life compared to ordinary polished rice.

2. Advantages of Parboiled Rice

High Nutritional Value: Hydrothermal treatment causes water - soluble nutrients such as vitamins and inorganic salts in the cortex to diffuse into the endosperm, increasing the nutritional value of parboiled rice. The content of B - vitamins, dietary fiber, and various minerals in parboiled rice is 2 - 4 times that of ordinary polished rice, with a comprehensive nutrition retention rate of up to 80%.

High Meal Rate: In the case of the same degree of dryness of the rice, the rice output rate is 37 - 76% higher than that of white rice of the same quality.

Short Cooking Time: Parboiled rice is easier to cook and can save fuel.

Shelf - stable: After cooking, most microorganisms are killed, and the rice enzyme is inactivated, reducing pest erosion and prolonging the storage period.

3. Production Process of Parboiled Rice and Related Equipment

The production process of parboiled rice generally includes pre - cleaning, soaking, steaming, hulling, rice milling, and other steps. Here are the key pieces of equipment involved:

Paddy Pre - cleaner: Removes large debris such as wheat - straw, straw, stone, and twine mixed into rice, preventing downstream equipment failure. It has a simple structure, good cleaning effect, and low power consumption.

Suction - type Specific Gravity De - stoner: Separates grains from impurities based on the difference in grain weight, impurity specific gravity, and suspension speed. It operates under negative pressure, is clean and hygienic, and has a high stone - removing efficiency.

Permanent Magnetic Cylinder Magnetic Separator: Continuously removes iron from dry material. It has a high iron - removal rate, is maintenance - free, and energy - saving.

Boiler System and Soaking Tank: The soaking tank is a pressure vessel. The vacuum system is used to extract air from the tank, increasing rice loading and reducing soaking water. The boiler system provides high - temperature steam for heat exchange to maintain the water temperature during soaking.

Cooking Machine: In this batch - processing equipment, rice with a moisture content of about 40% is sent to the digester, and saturated vapor of 120 degrees Celsius is introduced to gelatinize the starch in the endosperm.

Continuous Tower Dryer: Reduces the moisture of the initially dried rice to about 18%. After that, the rice is placed in a temporary storage bin for moisture and temperature homogenization.

Hulling Machine: Usually a rubber roller glutinous rice machine, which has a high shelling rate, low crushing rate, and large output.

Suction Separator (Rice Shell Separator): Separates low - specific gravity impurities such as chaff and dust from the rice.

Paddy and Brown Rice Separation Sieve: A coarse separation equipment with a compact structure, high screening efficiency, and simple operation.

Vertical Sand Roller Rice Milling Machine: Uses a two - way rice milling process of sand roller and iron roller to produce high - quality rice.

White Rice Grader: Accurately separates special rice, general rice, large broken rice, and small broken rice.

Color Sorter: Sorts rice based on color differences, removing bad, milky, chalky, and foreign materials.

Polishing Machine: Polishes the rice surface to form a smooth gelatinous layer, prolonging the preservation time.

4. Considerations for Selecting Parboiled Rice Equipment

Output and Power: The output of the pre - parboiled equipment must be greater than the output of the subsequent rice mill. When the output is consistent, choose equipment with lower power to save energy.

Quality and Technology: Advanced production equipment and technology ensure stable product quality. Look for equipment with a proven track record and technological innovation, such as intelligent moisture control and high - precision processing.

Safety and Durability: The equipment should be made of high - quality materials, such as stainless steel, and have safety features like guardrails and proper protection mechanisms.

In conclusion, parboiled rice equipment plays a crucial role in producing high - quality parboiled rice. By understanding the production process and the key features of different equipment, you can make an informed decision when investing in parboiled rice production. Whether you are a small - scale farmer or a large - scale rice processing enterprise, the right parboiled rice equipment can help you meet the growing demand for this nutritious and convenient rice product.

Hongdefa Machinery — Engineering Excellence, Nourishing Nations.

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