Operation points of gas heat conduction oil boiler diesel burner

The thermal oil boiler diesel burner refers to the boiler diesel burner heated by the thermal oil. Heat transfer oil, also known as organic heat carrier or heat medium oil, has been used as an intermediate heat transfer medium in industrial heat transfer processes for more than 50 years. The boiler diesel burner is developed based on the design concept of forced circulation. Generally, coal, petroleum, and natural gas are used as fuels, and heat transfer oil is used as a medium. The hot oil circulation pump is used to force the medium to circulate in the liquid phase. The heat energy is transferred to the heating equipment and then returned to the heating furnace for reheating. (1) The design of the full oil circulation system of the heat transfer oil furnace and light oil burner should be comfortable. Minimize elbows and valves. Use a circulating pump. To clean the filter in time, you must ensure that the flow rate of the heat transfer oil at high temperatures is not less than 2 m/s. (2) Correctly select the heating furnace (generally, the nominal capacity is 1. Choose 5 times of Ⅲ) to avoid large overload ratio and uneconomic phenomenon. The selection of the heating capacity of the heating furnace is not only related to the safety and service life of the heating furnace, but also affects the service life and production cost of the heat transfer oil. (3) Choose heat transfer oil with good thermal stability, oxidation resistance and coking resistance. When purchasing heat-conducting oil for light oil burners, be careful not to choose heat-conducting oil with dark odor and color. The service life of heat transfer oil is measured by four indicators: carbon residue, acid value, flash point and viscosity (Table 1). An oil test is conducted every six months to grasp the quality of heat transfer oil in operation. When a problem is found, replace the heat transfer oil in time, and find out the reasons for the deterioration of the heat transfer oil and preventive measures in advance. At the same time, do not strictly mix heat transfer oils of different product numbers. (4) Use the thermal oil boiler diesel burner in strict accordance with the operating procedures to avoid rapid fire and temperature rise (heating rate should be controlled at 10-40℃, h), over-temperature, over-pressure, emergency stop measures should be taken quickly and decisively, Observe the oil level and oil temperature of the expansion tank at any time. In the case of shortage of oil resources, timely replenishment. Prevent air and moisture from entering the oil circulation system. The high temperature heat transfer oil will accelerate the oxidation rate after directly contacting the air (when the temperature rises by 10°C, the oxidation rate will increase by 2 times), preventing the high temperature oil from directly contacting the air. A better method is to seal the upper space of the expansion tank with nitrogen. The protective gas film layer is formed under unconditional nitrogen sealing conditions. Under normal circumstances, the heat transfer oil temperature of the high water tank shall not exceed 60℃, and the high water tank shall not be directly connected in series in the circulation system. (5) Improve the thermal efficiency of the heat-conducting oil boiler diesel burner, and timely remove the dust and dirt on the inner wall of the furnace and the wall of the coil to ensure a good heat transfer effect. At the same time, better quality coal should be used as much as possible so that the heat generated by burning coal can be converted into hot oil in a timely and comprehensive manner. (6) When the boiler diesel combustion engine is insulated, the heat transfer oil circulating pump must not be stopped. Do not stop the circulating pump before the furnace temperature drops to the specified range. In the event of a sudden power failure or failure of the circulation system, in addition to ventilation and cooling. Also need to replace the cold heat transfer oil. Clean technology If your heat transfer oil boiler diesel burner is used for a long time or the selected heat transfer oil is not good or improperly used, coking and carbon deposits will block the pipes and heating surfaces, reduce heat transfer efficiency, increase energy consumption, and finally it is difficult to meet Production demand. Heat transfer oil boiler diesel combustion engine oil carbon scale cleaning technology First of all, the heat transfer oil boiler diesel burner is quickly using the heat transfer oil boiler diesel burner (heat medium boiler diesel burner) is a kind of organic heat medium oil as heat transfer muon boiler diesel combustion Due to the safety and efficiency of petroleum, chemical, printing and dyeing, food, etc., the machine can obtain a higher working temperature under a lower working pressure. Chemical fiber, plastics, coatings, building materials and other industrial enterprises quickly spread and use. Problems existing in the use of heat-conducting oil boiler diesel burner Problem 1: Condensation of heat-conducting oil easily makes the heat transfer area of ​​boiler diesel burner coking heat-conducting oil prone to thermal cracking and polymerization chemical reactions after high temperature heating, which reduces oil quality. For example, the heat transfer oil gel is thick, the carbon residue and acid value exceed the standard, and the coke crystals precipitate and deposit, causing the coking oil carbon scale in the heat transfer zone of the boiler diesel burner. Question 2: Coke fouling in the heat transfer area will increase energy consumption and cause fire accidents. The accumulation of oil coke fouling on the heat transfer tube wall of the heat transfer oil boiler diesel burner not only greatly reduces the heat transfer efficiency, increases the fuel cost, but also affects the downstream The temperature of the production process. Severely lead to overheating of the heat transfer wall, cracks in the pipe wall, corrosion and pipeline explosion, and major safety accidents such as fire and casualties caused by heat conduction oil leakage. Heat transfer oil coke resistance and anti-scaling technology First of all, the deterioration of petroleum accelerates the carbon coking of boiler diesel burners. In the process of using heat transfer oil boiler diesel burners, the chemical components of heat transfer oil are prone to high-temperature oxidation, cracking decomposition and thermal condensation and other chemical reactions , Make the grease gel. The coke particles produced by polycondensation greatly increase the carbon residual value of the heat transfer oil and form coke scale on the heat transfer surface. The scale of oil and carbon endangers the safe operation of boiler diesel burners. The carbon scale formed by the thermal oil product oil coke not only greatly reduces the heat transfer efficiency of the thermal oil boiler diesel burner, but also greatly increases the energy consumption cost, and it also leads to diesel combustion in the thermal oil boiler. The machine-corrosive metal corrodes and scales at high temperatures, the furnace tube metal is damaged by cracks or corroded holes, and the furnace tube can be burned in severe cases. The leakage of heat transfer oil may cause major accidents such as fire and human life. ! If you are interested in diesel combustion engines, please contact us for a quote!