Technique and industrial device for refining rice by supercritical polybasic fluid

Abstract

The invention belonges to the field of refining rice by supercritical polybasic fluid. The invention is characterized in that the supercritical polybasic fluid industrial device with carbon-dioxide zero emission, with pressure less than 22 MPa and temperature less than 40 DEG C, pre-breaks wall of brown rice layer to be directly prepared as high-nutrient rice; meanwhile, harmful bacteria, mould and ova are killed, so that freshness date is prolonged and storage loss is reduced; impurities in the brown rice such as pesticide residue, heavy metal and dust are removed via ultrasonic and microwave extraction; the brown rice becomes good-looking and delicious by colouring and aromatizing; besides, anti-free-radical, anti-aging, anti-radiation and immunity-improving natural bioactive substances are uniformly added so as to improve health-care function and added value of the rice, further; thus, fresh and delicious rice with advantages of high nutrient, water saving, washing prevention and rapid cooking is produced, with yield being increased by more than 25%; the invention is executed and popularized widely in rice planting regions, thereby ensuring national food safety and international food safety.

Description

technical field [0001] The invention belongs to the field of supercritical multi-component fluid refining rice, and is characterized in that it is a supercritical multi-component fluid industrial device with zero emission of carbon dioxide. Under the condition that the pressure is lower than 22MPa and the temperature is lower than 40°C, the paddy brown rice layer is pre-broken and directly prepared as High-nutrition rice, while killing harmful bacteria, mold and insect eggs to prolong the storage period and loss in storage, with ultrasonic and microwave extraction technology to remove pesticide residues, heavy metals and dust and other impurities in brown rice, coloring, adding Fragrance, improve the appearance and taste of brown rice, evenly add natural bioactive substances that resist free radicals, anti-aging, anti-radiation, and improve the body's immunity to further improve the health function and added value of rice. Compared with traditional rice industrial production tech...

AI Technical Summary

Problems solved by technology

[0009] my country's Taiwan Province and South Korea's existing supercritical CO 2 The common disadvantage of rice processing technology is that the selected supercritical CO 2 The pressure is as high as 25-32MPa, the equipment investment is large, the construction period is long, the energy consumption is high, and the production cost is high. It is difficult to implement and promote the annual production of 200 million tons of rice in my country.

Furthermore, since both Taiwan and South Korea adopt pure carbon dioxide liquid pump circulation, in order to avoid the water hammer phenomenon caused by the air brought into the system when the rabbit extraction tank is loading and unloading, a large amount of carbon dioxide needs to be discharged to operate normally. According to the "United Nations Climate Change Framework" The Kyoto Protocol to the Convention requires that this would risk a "halt"

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