Specifications for heat conduction oil boiler diesel burner room

The thermal oil boiler diesel burner refers to the boiler diesel burner heated by the thermal oil, also known as the organic heat carrier Or heat medium oil, heat transfer oil has been used in industrial heat transfer process for more than 50 years as an intermediate heat transfer medium. 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. Code for fire protection design of boiler diesel combustion engine room The boiler diesel combustion engine room shall be set up separately. The boiler diesel combustion engine room is the first and second fire protection class of the building. However, if the total amount of fixed evaporation does not exceed 4 tons/hour, according to the boiler diesel combustion engine room, a three-level fireproof building can be used. Boiler diesel burners should be installed with light roofs, generally no more than 120 kg per square meter, otherwise skylights should be installed, or high-discharge boiler diesel burners should be placed on the wall for glazing, accounting for 10% of the opening area, or A pressure relief port should be installed. When the boiler diesel combustion engine room is a multi-storey building, there should be at least two exits on each floor, one exit on each side, and a safe evacuation staircase at the operating point of each floor. The total width of a single boiler diesel combustion engine room does not exceed 12 meters, the area does not exceed 200 square meters, and the door can be opened. The distance between the chimney of the diesel combustion engine room of the boiler and the combustible roof structure shall not be less than 50 cm. In the overall layout of the factory, the boiler diesel combustion engine room should be selected in the main body of the main body or the cross-wind direction structure, and should be considered due to open flames or chimney fires, in the surrounding production workshops of side a and side b, inflammable materials, Important material warehouses, flammable liquid storage tanks, outdoor grain, cotton, wood and straw paddocks must be kept in areas such as fire isolation. The building design can be designed in accordance with the relevant provisions of the 'Fire Code', generally 25 to 50 meters, and should There are more liquid separations between the chemical oil and gas storage tanks, so that they will not cause obvious fire hazards. A fire separation distance of 6-8 meters should be maintained between the diesel combustion engine room of the boiler and the fuel. It is best to build a wall around it. Do not build flammable buildings or stack flammable materials in the boiler diesel-burning machine room about 25 meters away. The power cord of the boiler diesel combustion engine room should not be covered with bare wires or insulated wires. Metal pipes or cables should be used for wiring. They should not be laid along the surface of heat carriers such as the boiler diesel burner flue and hot water tank. The cables should not pass under the coal yard. When the boiler diesel combustion engine room is a three-story building with an area of ​​more than 3000 square meters, fire-fighting water supply equipment and fire-extinguishing equipment should be installed. And should consider installing foam, steam and other fire extinguishing equipment. Fire prevention 1. Pipe burst fire 1. The oil quality is poor and the residual carbon in the oil is too much. If the heat transfer oil is inadvertently mixed with water, impurities or other grease during storage, transportation or operation and maintenance, when the temperature of the heat transfer oil rises to 100 ℃, it will cause oil injection and fire, or the water will evaporate and generate high pressure at high temperature, resulting in The equipment exploded over pressure. Add carbon residues in the oil index. The heat transfer oil will undergo some chemical changes during the heating operation and produce a small amount of high polymer, and local overheating will produce coke. These high polymer and carbon residues are insoluble in the oil and suspended in the oil. In the operation of these substances, they will be deposited on the bottom of the drum and overheated bumps, deposited on the tube wall and overheated. Therefore, the heat transfer oil should be sampled and analyzed on a regular basis, and the quality changes of the oil products should be grasped in time, and the reasons for the changes should be analyzed. New heat transfer oil should be added regularly to make the carbon residue basically stable. The heat transfer oil added to the boiler diesel burner must be dehydrated in advance. 2. The outlet temperature exceeds the temperature and the flow rate is too low. Sometimes due to high oil temperature and engine temperature does not rise, it cannot meet production needs. Some units take the method of increasing the outlet temperature to ensure the heat supply. As a result, the outlet temperature is close to or even exceeds the maximum allowable use temperature of the heat carrier, which intensifies the degree of coking, fouling, and heat transfer efficiency. Circulate until the furnace tube bursts. In addition, too low a flow rate will cause the temperature of most or part of the tube inner wall of the heat surface to be higher than the allowable oil film temperature, and shorten the normal service life of the heat transfer oil, resulting in drums, tube bursts and overheating. Therefore, the maximum oil temperature at the outlet of the boiler diesel burner should be about 30°C lower than the working temperature of the heat carrier to prevent the oil from overheating and decomposing during use. During operation, the speed of the heat transfer oil in the radiant heating surface pipe should not be less than 2m/s, and the speed of the heat transfer oil in the convection heating surface pipe should not be less than 1.5m/s to prevent the occurrence of carbon residue, blockage of the pipe diameter and pipe wall overheat. 2. Leakage fire Due to welding quality problems, part of the welding seam of the heat medium transport monitor will fall off or evaporate in a large amount when the temperature is too high, causing pipeline vibration or even damage, leading to a large amount of heat transfer oil leakage. However, heat transfer oil has a strong permeability, especially at the flange gasket, which is more serious. Therefore, when installing, choose a qualified installation company. The pipeline connection is well welded, and the flange connection is supplemented. The screw connection cannot be used. The flange connection should use oil-resistant, pressure-resistant, high-temperature resistant high-strength graphite products as the sealing gasket . All accessories in contact with the heat carrier must not be made of non-ferrous metals or cast iron. Should steel pipe be used? Steel seamless pipes, fasteners, especially connecting bolts on the main circuit are not used. Before the boiler diesel burner is ignited, the boiler diesel burner supervision office and the installation company shall conduct pressure tests on all pipes and valves until leakage is found. The heat transfer oil should circulate in the system pipeline for no less than 60 minutes, and the ignition should be performed after confirming that it is normal. 3. Power failure and fire. When the thermal oil boiler diesel burner is in normal use, the unit will occasionally experience a sudden power failure. At this time, the circulating oil pump stops working, and the coal in the furnace continues to burn, causing the boiler diesel combustion engine oil temperature to continue to rise. If the oil temperature rises If it drops too quickly, the oil temperature will be locally overheated and coking in a short period of time, resulting in excessively high pipe overheating temperature. Therefore, in the event of a power failure and other failures, all furnace doors should be opened to immediately eliminate the remaining coal in the furnace, let a large amount of cold air enter the furnace, quickly reduce the furnace temperature, and eliminate the heat source; open the drain valve of the boiler diesel combustion engine synchronously. Slowly put the high-temperature oil into the oil storage tank, and let the cold oil in the expansion tank slowly flow into the boiler diesel burner to take out the heat. ! If you are interested in diesel combustion engines, please contact us for a quote!