Heat exchanger with spiral baffle plate and corrugated tube for liquid food sterilization

A technology of helical baffles and liquid food, applied in the direction of heat exchanger shells, tubular elements, heat exchange equipment, etc., can solve the problems that have not been seen before, and achieve the effect of improving the overall heat transfer coefficient and overcoming discontinuous production.

Pending Publication Date: 2019-08-23
广西壮族自治区特种设备检验研究院
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Problems solved by technology

Spiral baffles and corrugated tube heat exchangers are the two types of heat exchangers that scholars have studied the most in recent years. They have been well applied in petrochemical, energy, pharmaceutical and other fields. Literature research has proved that they

Method used

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  • Heat exchanger with spiral baffle plate and corrugated tube for liquid food sterilization
  • Heat exchanger with spiral baffle plate and corrugated tube for liquid food sterilization
  • Heat exchanger with spiral baffle plate and corrugated tube for liquid food sterilization

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specific Embodiment

[0033] Specific example: the production capacity of a certain sauce factory is 1.2t / h, the temperature of the liquid food inlet pipe 1 is 20°C, the outlet temperature is required to be 80-85°C, heated by 120°C hot water, and the flow rate of hot water is 2.8m 3 / h. After thermodynamic calculation, the heating water is lowered from 120°C to 90°C, which can fully meet the sterilization temperature requirements of liquid food. The heat exchanger corrugated tube is DN32×1.5, the outer casing is DN50×1.5, and the helix angle of the continuous spiral baffle is 55. °, the length of a single heat exchange tube 7 is 3.0m, and the number of groups is 15 groups. The crest radius and pitch of the corrugated tube can be selected arbitrarily, but for a certain working condition, the optimal structural size can be found through a mathematical model. For this case, the particle swarm algorithm can be used to optimize the crest radius and pitch. The objective function can be established: K=f(...

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Abstract

The invention relates to a heat exchanger with a spiral baffle plate and a corrugated tube for liquid food sterilization. The heat exchanger comprises an outer sleeve, a heat exchange tube and the spiral baffle plate. The heat exchange tube is arranged in the outer sleeve and a cavity is formed between the inner wall of the outer sleeve and the outer wall of the heat exchange tube; liquid food, the flow direction of which is opposite to that of a heating fluid, is introduced into the heat exchange tube, and exchanges heat with the heating fluid to reach a sterilizing temperature, and the heatexchange tube is the corrugated tube, so that the flowing liquid food is disturbed continuously by cyclical fluctuation changes of expansion and compression; the spiral baffle plate is located in thecavity for increasing the flow rate of the heating fluid and forms a structure which increases the turbulence effect of the heating fluid together with the heat exchange tube. The heat exchanger playsefficient heating and sterilizing roles to non-Newtonian fluid food such as seafood sauce and overcomes the defects that a common sterilizing pot is discontinuous in production, other heat exchangershave flowing dead angles for sterilizing the liquid food such as seafood sauce, the liquid food is likely to deposit to block the heat exchangers, and the heat efficiency is not high.

Description

technical field [0001] The invention relates to a liquid food sterilization device, in particular to a spiral baffle corrugated tube heat exchanger for liquid food sterilization. Background technique [0002] Heat exchangers occupy an important position in my country's industrial production and energy-saving fields. They are mainly used to realize process energy conversion and heat recovery, so that the system can achieve balance, rationality, and energy conservation. It is used in industrial fields, especially in industries with high energy consumption. At most, it mainly includes food, chemical industry, oil refining, power, light industry, atomic energy, pharmaceutical, aviation and many other industrial production. Spiral baffles and corrugated tube heat exchangers are the two types of heat exchangers that scholars have studied the most in recent years. They have been well applied in petrochemical, energy, pharmaceutical and other fields. Literature research has proved th...

Claims

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Application Information

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IPC IPC(8): F28F1/36F28F9/013F28F9/24F28F19/00F28F27/00
CPCF28F1/36F28F9/013F28F9/24F28F19/00F28F27/00
Inventor 胡卫朋莫家国梁才航陆应生邓静
Owner 广西壮族自治区特种设备检验研究院
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