Heating system for separating harmful substances in oil

Abstract

The invention discloses a heating system for separating harmful substances in oil. The heating system comprises a primary heating system, a gas-liquid separation tank, a secondary heating system and a smoke dispersion system, wherein the primary heating system and the secondary heating system comprises heating kettle bodies, drums, reducing mechanisms and driving devices; an oil circulation space is formed between the heating kettle bodies and the drums; the heating kettle bodies are connected with a housing; a ventilating chamber is formed between the housing and the heating kettle bodies; an air inlet and an air outlet are formed in the side wall of the housing; the air inlet of the primary heating system is communicated with the air outlet of the secondary heating system; the air inlet of the secondary heating system is connected with a burner; the gas-liquid separation tank comprises a tank body; the tank body is communicated with the primary heating system and the secondary heating system; the smoke dispersion system comprises a smoke dispersion tank; the smoke dispersion tank is connected with an oil smoke output pipe and a high-temperature oil outlet pipe; the smoke dispersion tank is communicated with the secondary heating system. When the heating system is adopted for oil refining, the phenomenon of local heating and fire in a heating air duct can be avoided, and the heat energy utilization rate can be improved.

Description

Technical field [0001] The invention relates to a heating system for separating harmful substances in grease. Background technique [0002] When squeezing vegetable oil or animal fat in oil refining (boiling oil), the water contained in it is heated to evaporate first, and then continue to heat to reach its smoking point, so that some of the harmful substances, free fatty acids, alcohols, phenols, Hydrocarbons, ketones, aldehydes, polycyclic aromatic hydrocarbons, peptic impurities and alcohols are separated from the oil into smoke, and at the same time, part of the esters in them produce a unique fragrance at high temperatures. [0003] In the industrial production of traditional food, the process of oil refining is basically the same as the method used in the home, which is to use a large pot with fat and fire to heat to the required temperature, and after the smoke is dispersed, it is used in the next process. Using traditional oil refining methods for oil refining mainly has t...

AI Technical Summary

Problems solved by technology

There are mainly the following defects in the traditional oil refining method: the first one is the low heat transfer efficiency. The oil in the pot is circulated by the gravity density difference of the oil at different temperatures, and the weak circulation leads to heat transfer. Low efficiency; the heat absorption efficiency of oil becomes lower and lower after the oil temperature rises from the high heat absorption efficiency at the beginning of heating at room temperature; a large amount of high-temperature flue gas cannot be fully heat-exchanged and directly discharged into the atmosphere, which is a waste of energy

The second is that there are no effective purification measures for the large amount of smoke generated after oil heating is drawn out of the workshop by the exhaust fan. The current technology can only use water foam dust removal, cyclone separation dust removal and electrostatic dust removal. The purification rate of the three methods is not high. And the first two energy consumption is very high, the latter can not run continuously, the oil film on the electrode must be cleaned with lye in a short period of time (the oil film is an insulator) before it can run, but it will bring new pollutants , thus, a large amount of oil fume permeates the surrounding environment and pollutes the environment

The third problem is that heating of any nature will cause scaling. After scaling, a small amount of scale that falls off naturally is mixed into the refined oil and becomes harmful substances. The scale that does not fall off will reduce the heat exchange efficiency and waste energy, and must be cleaned manually on a regular basis.

The fourth is the open production method. The grease of the utensils is exposed to the air, which is extremely unhygienic and does not meet the requirements of modern aseptic food production.

The fifth is that the production environment is harsh and the labor intensity of the workers is high. The workers work in high temperature and high smoke, and are prone to occupational diseases such as silicosis.

The sixth is that the production quality is guaranteed by the experience and sense of responsibility of the workers, and the production is produced at the pace of each pot. The production efficiency and quality are low, and it is not easy to realize automatic control of the production process and quality.

The seventh is that the traditional production method inevitably produces local overheating, which will cause the oil to produce carcinogens

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