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  • 产品名称: LHY series of fuel-type thermal oil furnace (thermal power 700KW-4200KW)
  • 上架时间: 2017-05-15
  • Views : 50

LHY60-120 million card series of thermal oil heater: I developed the company's own products. It uses advanced diesel burners to heat the heat transfer oil, through the hot oil circulation pump to heat the hot oil forced circulation, in order to heat the need to heat the site. And make it a stable high-temperature heat source, the product modeling compact, safe and reliable performance, small size, low energy consumption, does not pollute the environment, can be widely used in transportation, chemicals, paper, textile and other industries.
Technical features:
● Selection of imported burners and precise and reliable control system, the heat load will be fully adjusted to be in the best working condition;
● Furnace and pipeline design advanced, heating speed, high thermal efficiency;
● air-cooled hot oil circulation pump, excellent natural cooling structure, changing the traditional water cooling process, advanced structure, excellent manufacturing;
● bellows valve height seal, safe and reliable;
● save energy, reduce operating costs, environmental compliance;
● the most suitable for highway construction, transition convenient and fast.
 
 
 
1. Application scope and characteristics
LHY-80-type hot oil heater is our own research and development of products. It uses advanced diesel burners to heat the heat transfer oil, through the hot oil circulation pump, so that the heat of the thermal oil forced circulation, the heat through the carrier heat transfer to the heating site, so that the receptor to obtain a stable high temperature heat source. The product is compact and perfect, the performance is safe and reliable, small size, low energy consumption, does not pollute the environment, can be widely used in transportation, chemical, paper, textile and other industries.
The equipment selection of the Japanese Olympus LT81 burner and accurate and reliable control system, the heat load will be fully adjusted, so that the heating and insulation in the best working condition. It uses the air-cooled hot oil circulation pump heat fast, sealed, and abandon similar products with spare motor way, both to reduce costs and improve the use of stability. Oil gate valve is used in the bellows valve, high temperature, corrosion resistance, sealing performance, no leakage. The inner shell of the furnace is made of 16MnR or 20G material, which can fully guarantee the strength and heat resistance of the furnace.
The outer surface of the equipment after sandblasting, rust treatment, and then by spraying high-grade anti-rust paint and imported high-temperature aluminum paint, both beautiful and durable.
The equipment is equipped with waste heat recovery (reburning) device, can take full advantage of heat, energy conservation, reduce operating costs.
2. Main technical parameters and thermal calculation
2.1 Main technical parameters
Heat supply: 0.8 × 106 Kcal / h
Working temperature: 280 ℃
Working medium: YD hot oil
Hot oil outlet pressure: 0.44Mpa
Furnace circulation Sheng oil volume: 1.6M3
Thermal efficiency: ≥80%
Total heat transfer area: 30m2
Working force: 0-0.44Mpa
Internal circulation oil working pressure: 0-0.44Mpa
Hot oil pump flow: 45m3 / h
Head: 40m
Installed capacity: 14KW
Contact floor size: 5150mm × 1674mm
Dimensions: 6000mm × 2000mm × 7660mm
6000mm × 2000mm × 2700mm (excluding chimney)
Heating asphalt capacity: (excluding any heat loss of heat oil furnace)
Unit: ton / hour
 
 
 
 
80 million kcal / h
60 million kcal / h
20 ° C to 100 ° C
twenty two
17
30 ° C to 100 ° C
25
19
 
2.2 Thermal calculation
2.2.1 Calculation of heating capacity
Q for = Q lose + Q = qm = 0.8 × 106 kcal
Q for the maximum heat supply of heat transfer furnace, Kcal / h
Q for diesel combustion (diesel for 10,000 kcal / kg)
M for the burner 80 kg / h of fuel
Q - heat transfer oil furnace maximum output heat, Kcal / h
Q scattered - heat transfer furnace heat loss, Kcal / h
Q = Q1 + Q2
Q1 - heat transferred through the thermal insulation of the thermal oil furnace, Kcal / h
Q2 - Heat from combustion of flue gas, Kcal / h
Η = Q / Q supply (η-thermal oil heating furnace thermal efficiency)
If the thermally conductive oil furnace is used to heat asphalt in the asphalt tank and does not account for any heat loss from the thermal oil furnace,
Q = mc (t1-t2) / τ
M - heated asphalt mass kg
T1-asphalt to stop heating temperature ℃
T2 - asphalt initial temperature ℃
Τ-heating heating time h
C-asphalt at the temperature t1 and t2 when the average heat of the average kj / kg ℃
 
Δtm
2.2.2 Calculation of heat transfer area
 
B
Q pass = λA = 1.13 × 107 kcal / h
Q - the maximum amount of heat transferred per unit time through the heat transfer area
A-unit time within the main heat transfer area m2 (7m2)
Λ - total average heat transfer number W / m ℃ (for steel in the range of 200 ℃ -1000 ℃ value of 38)
Δtm-the average temperature error before and after the heat transfer wall (take 600 ℃)
B - heat transfer wall thickness m (0.01m)
Q is much larger than Q
The maximum heating capacity of 800,000 kcal / hour (600,000)
Total heat transfer area of ​​30 m2
Thermal efficiency 80%
Oil furnace heat transfer oil volume of 1.4 m3
2.2.3 Oil furnace heating asphalt capacity analysis
Bitumen oil is heated at 20 ° C to 100 ° C
Q = q = η = mc (t1 - t2) / τ
Ie m = Q for ητ / c (t1-t2)
Η - calculated and verified approximately 80%
 
The specific heat of asphalt at different temperatures
 
 
 
 
Asphalt temperature ℃
10-20
20-60
60-100
100-150
150-180
Asphalt specific heat
Kcal / h
0.263-0.299
0.299-0.346
0.346-0.394
0.394-0.442
0.442-0.526
 
M = 8 × 105 × 80% / {(0.299 + 0.394) / 2} × (100-20) = 22.9 tons
3. Working principle and process (see schematic diagram)
Working principle: the use of the heat generated by the burner oil, give full play to radiation, convection and conduction and other heat transfer, so that the heat transfer oil in the heat pipe and furnace cavity heating, through the hot pump back to the pump and control the pipeline forced to internal circulation, So that the heat transfer oil and heating, to set the temperature and then by the hot oil pump and control the implementation of the pipeline a large cycle of heating, and then heating, through the implementation of heating and heating purposes.
Workflow (Refer to Schematic): The heat transfer oil is injected into the furnace chamber 2 through the tank 16 from the upper tank (pouring box) and filled with the circulation line. The burner 1 is started and the flame is sufficiently burned in the hearth 3 to heat the heat transfer tube 4 and the furnace inner shell 6 so that the heat transfer oil in the furnace chamber 2 is heated. The flue gas is partitioned by the partition plate 22 so as to be wound around the front cover cavity 21 and the flue pipe 20 is discharged into the atmosphere through the chimney 14. The heat-conducting oil, which reaches the set temperature after heating, is supplied to the area to be heated by the shut-off valve 13 by the hot oil outlet pipe 8 by the hot oil pump 12. The heat transfer oil is heated by the shut-off valve 10 and the circulation pump 9 and the heat transfer tube 4, and the heat transfer oil is heated in the hot oil pump 12 Under the action of the next cycle.
 
4. Installation and precautions
4.1 installation
According to the working environment selected the best location, according to the basic map to lay the foundation, the equipment should be ground on the ground pad flat, and then connected to the oil and oil pipeline.
4.2 Use and precautions
Before the use of the equipment should be a comprehensive inspection to confirm the installation of pipelines and valves, etc., before they can put into trial operation.
First open the high slot on the hole cover, open the oil on the valve (except the oil valve), to the high tank plus hot oil, heat oil filled with oil stoves and pipelines, should pay attention to control the oil level in the upper and lower limits Between the same time to start the hot oil pump to the oil furnace heat transfer oil circulation is normal, then can only start the burner, a small fire, so that the gradual warming of the thermal oil, the new heat due to the existence of water vapor, the heating will Peng Foam) so the temperature must be slow, you can between 100-120 ℃ to maintain 2-4 hours, when the burner to run slowly, by the temperature of the heat to control the oil, to the ceiling when the automatic ceasefire, the temperature to the lower limit Automatic ignition, each cycle for a period of time to open the drain valve (sewage valve) a discharge of waste water, when the heat transfer oil 160-180 ℃, it should pay attention to the timely removal of waste water, control oil surging up to 180 ℃ after the completion of dehydration , To achieve normal use of the conditions, then the thermal oil temperature will be used by hot parts (such as asphalt tank) temperature control, to the upper limit of the burner ceasefire, to the lower limit when the automatic ignition. The generated exhaust gas is discharged from the tank through the ventilator on the upper tank.
The temperature of the heat transfer oil is reflected by the two thermometers on the oil furnace line. When used, observe the two thermometers before and after the oil furnace. When the reading reaches the same time, it is proved that the working temperature reaches the reading of the thermometer. Otherwise, the check valve should be adjusted The
Normal use of the furnace temperature level, the control room by the set temperature automatically control the burner ignition and flameout to adjust. When the oil stove is to be stopped, turn off the burner, open the valves in the pipe, cool it, and stop the pump. Long-term deactivation, if you want to release the heat transfer oil can open the lower side of the oil valve, release the heat transfer oil.
5. Maintenance and maintenance
5.1 In order to keep the performance of the furnace and parts intact, every two years (according to the actual situation can increase or decrease) on its surface to be cleaned, painted.
5.2 The parts of the activities such as valve rotation contact parts should be filled with lubricating oil to keep the rotation flexible and effective, especially for the burner should be more important protection.
5.3 often observe the operation of the various parts of the equipment and found that leakage should be dealt with in a timely manner.
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