Heavy oil combustion system common faults and troubleshooting

Heavy oil combustion system common faults and troubleshooting

1. the burner will not start

Burning device cannot normal started of reasons has many, encountered this species situation of troubleshooting steps following: check main power switch whether collection Shang, fuse whether fuse; check circuit mutual lock whether open, control panel and hot following electrical whether close, if both in close State needed again reset; check servo motor should in low flame location, or should will adjustment switch placed "automatically" or will potential meter adjustable to minimum; check wind pressure switch whether has action.

2. burner is not normal

Burner not working probably due to flame detector mirror stained ash or damage. Mirror mirror stained ash just detector again wiped clean and probe is damaged, need to replaced with new parts. If the above does not resolve the problem, you can try to adjust the detector to detect direction.

3. the flame accidentally goes out

If the burner flame goes out accidentally, probably due to dust nozzle. At this point you can remove the nozzle cleaning. Flame accidentally goes out also may be due to dry air in excess or in deficiency caused, may be appropriate to adjust the damper of blower, reasonably control the amount of combustion air access. In addition, also need to check if the oil temperature is too low, pressure of heavy oil combustion requirements are met. If the flame goes out don't start, probably due to combustion air excess, need to focus on air/fuel ratio, cams, linkages, to safeguard oil ratio and reasonable matching.

4. nozzle leaking oil

If the nozzle is leaking oil, may be due to the gun on/off valve blocked or damaged. You should first clean switch valve, if a failure cannot be ruled out, it can only be replaced with new parts.

5. return oil pressure instability or cannot be adjusted

If diesel oil pressure could not be adjusted, is likely to be due to the needle valve cleaning or nozzle worn. You should clean the nozzle needle valve or replace with new.

6. flame is not on the axis of the combustion chamber

If the burner fuel combustion, flame is not on the axis of the combustion chamber, may be due to gas gun ring stand or gas gun position changes, you should relocate.

Heavy oil combustion system of asphalt mixing plant control measures

How to make asphalt mixing heavy oil burning more fully, and equipment used in the process are more reasonable, may take the following measures:

1. use and maintenance

Reasonable selection of fuel. At present, with the rapid rise in fuel prices, used in the production process of asphalt mixing equipment is heavy oil fuel into China. In the choice of heavy oil as fuel, should give full attention to oil drilling, combustion properties, calorific value, sulphur, water and mechanical impurities, etc, only appropriate to ensure full combustion of heavy oil.

Drill on direct response efficiency of the pumps, injectors and fuel consumption, drill more, worse the fog effect, so choose drill moderate heavy oil. Sulfur in heavy oil can cause burning, drying drum, the erosion of the wind and dust, so should use low sulphur heavy fuel oil sulphur control in 0.5% the following. Heavy water in not only reduces fuel content of flammable components, fuel ignition problems and excessive moisture will increase corrosion of piping and equipment, increased exhaust gas heat loss and energy consumption, if uneven moisture content may lead directly to flame pulsation or even stalling, so heavy with moisture content below 1% should be used. Mechanical impurities in oil can clog the filter, nozzle, valve cores, accelerating pump wear, mechanical impurities content of less than 0.5% heavy oil should be chosen.

2. the measures for improvement

(1) control the viscosity of the oil

When heavy oil suddenly increases, the particles easily into fine droplets of oil, will produce poor atomization, resulting in combustion smoke. Therefore necessary to control the oil drilling.

(2) increase the fuel injection pressure

Burner is used to heavy oil atomized into fine particles and spraying them into the drum mixes with air to form a good mixture of fuel gas. Therefore, we increase the burner Jet stress, improves the

Mixture of fuel and air quality, improve fuel conditions.

(3) adjust the wind scale

Scales the wind, oil right, can make the mixture of fuel and air to form a good, avoid black smoke caused by incomplete combustion and increased fuel consumption.

(4) introduce a fuel filter

Replacement of the fuel pump, keep the original circuits, pressure gauge, safety valve device does not move, and set on the part of the oil pipeline multi-stage filtration devices to reduce impurities in heavy oil to ensure full combustion.