Purpose
Line heater PP-0,63A / AJ is designed for heating of oil products during transportation, as well as for emulsified oil heating at oil treatment units.
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Technical data
| Íàèìåíîâàíèå | PP-0,63A | PP-0,63AJ | |
| Useful heating capacity of firebox, max. | MW (Gcal/h) | 0,73 (0,63) | 0,73 (0,63) |
| Heated product capacity, max. | kg/s (t/day) | 13,3 (1150)* | 13,3 (1150)* |
| Pressure at coil inlet, max. |
MPa (kgf/cm 2) | 6,3 (63) | 6,3 (63) |
| Differential pressure in coil, max. | MPa (kgf/cm2) | 0,25 (2,5) | 0,25 (2,5) |
| Temperature: product inlet to heater, within | °Ñ | 5 | 5 |
| product heating, max.: | °Ñ | 80* | 80* |
| Intermediate heat carrier (sweet water) heating, max.: | °Ñ | 100 | 100 |
| Heat carrier volume (sweet water) | m3 | 11,0 |
11,0 |
| Medium heated (oil, emulsified oil, oil-well water) | |||
| viscosity, max.: | cSt | 100 | 100 |
| acid gases concentration: hydrogen sulfide (Í2S), max. | % mol. | 0,01 | 0,01 |
| carbon dioxide (ÑÎ2), max. |
% mol. | 1,0 | 1,0 |
| Fuel: | Natural or oil-well gas | oil, emulsified oil | |
| Combustion heat: | MJ/nm3 | 35-60 | - |
| hydrogen sulfide, mass concentration, max.: | % | 0,002 | 0,01 |
| pressure at heater inlet: | MPa (kgf/cm 2) | 0,3(3) - 0,6(6) | 4,0–6,2 (40–62) |
| Nominal pressure at burner : | MPa (kgf/cm 2) | 0,07(0,7) - 0,15(1,5) | 3.5(35) |
| fuel (oil), max. | m3/h (kg/h) | 100 | 50-100 |
| Oil viscosity, max. |
cSt | - | 20 |
| Efficiency, max.: | % | 80 | 80 |
| AC power supply to instrumentation: |
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| voltage: | Â | 220 | 220 |
| frequency: | Hz | 50 | 50 |
| Mains voltage oscillation: | % | –15 to +10 | –15 to +10 |
| Dimensions of furnace (length õ width õ height), max.: | |||
| transportation | m | 10,495õ2,53õ3,35 | 9,34õ2,08õ3,35 |
| installation | m | 10,495õ2,53õ3,35 | 9,34õ2,41õ9,19 |
| Mass of inoperative heater, max.: | tons | 13 | 13 |
Note: * The give parameters are specified for medium heated at viscosity and temperature 20°Ñ, max. 100 mm2/s (100 cSt)
Structural description and operation principle
- Line heater PP -0,63A is cylindrical vessel (furnace body) with flat heads, skid-mounted. Inside of the furnace body there are firebox with igniter nozzle and funnel, and a product coil. The furnace body is cylindrical shell with two semi-flanged connections for product coil and firebox. In the top section of the shell, there is expansion tank for intermediate heat agent pouring. The furnace body has twp welded supports. The firebox is n-shaped welded structure of pipe, where due to radiation-convective heat exchange the furnace gases trans-mit heating to intermediate heat agent. The coil is four-sectioned tube bundle. It is fixed in tube plates and has inlet and outlet flanged connections and equipped with strapping.
- On side surface of the body there is fuel gas collector with devices for scrubbing, reduction and control of fuel feed-ing to burners.
- The service platform is fixed to the furnace body.
- Heater is equipped with automation control system.
Instrumentation system of PP-0,63AJ
Automation control system is used for remote ignition of nozzle, process parameters control, operation and emergency alarms, automatic protection system for heater if the set values are exceeded.
The system mainly consists of:
– block of controls and alarms;
– spark igniter;
– UV-transducer.
- Visual control of main process parameters
- automatic control of fuel oil pressure at the nozzle;
- automatic ignition of pilot and burner;
- automatic emergency shut-down of the heater and blocking of start-up program with audio alarm and warning lights when the following set values are exceeded:
- heated oil pressure at heater inlet;
- fuel oil pressure prior to nozzle;
- intermediate heat agent temperature;
- intermediate heat agent level;
- flame failure at nozzle;
- power-off and communication line breakdown. - Operation warning signaling for the following parameters:
– supply voltage indication;
– ignition program procedure;
– flame indication for pilot and main burners;
- control of UV-transducer malfunction.
