E-1,0-0,9; 1,6-0,9; 2,5-0,9 boilers

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E series boilers design for saturated steam production used for technological, heating and domestic needs of industrial enterprises.

Scope of supply:

• Boiler module
• Feed pump
• Fan
• Induced-draft fan
• Fuel system
• Ladder with platform
• Control system
• Burner unit

Technical data:

Boiler type	E-1,0-0,9M	E-1.0-0.9G	E-1,0-0,9R	E-1 6-0,9 GM, GMN (with supercharging)	E-2,5-0,9 GMN (with supercharging)	E-2,5-0,9 GM
Design heat efficiency, t/h, min	1,0	1,0	1,0	1,6	2,5	2,5
Outlet saturated steam operation pressure, MPa (kgf/cm2), max	0,8 (8,0)	0,8 (8,0)	0,8 (8,0)	0,8 (8,0)	0,8 (8,0)	0,8 (8,0)
Fuel	fuel oil, oil	natural gas	hard coal	gas, fuel oil, oil	gas, fuel oil, oil	gas, fuel oil, oil
Saturated steam humidity, %, max	3,0	3,0	3,0	3,0	3,0	3,0
Water volume in boiler, m3	1,1	1,1	1,1	1,64	2,52	2,68
Full heating surface, m2	31,6	31,6	31,6	47,13	80,13	80,13
Efficiency, % , min	90	90,5	81,5	89	89	90,5
Aerodynamic resistance, Pa	69	72	119	491	670	670
Pressure (+), rarefaction (-) in furnace, Pa	-30	-30	-30	>+300	>+500	-30
Feed water temperature, °С	50±10	50±10	50±10	50±10	50±10	50±10
Outlet gas temperature, °С	235	230	290	238	235	225
Boiler weight, max	4100	4060	3790	5100	6400	6700
Boiler overall dimensions, m (length x width x height), max	4,2x2,35x2,9	4,2x2,3x2,9	4,35x2,3x3,0	4,2x2,85x2,9	5,35x3,2x2,4	5,35x3,2x2,4

Structure and Operation Principles.

Steam boilers E series: E-1,0-0,9; E-1,6-0,9; E-2,5-0,9 vertical water tube double drum boilers with natural circulation.

Boiler tube systems are gas tight and structural layout of the same type:

• 2 drums, upper (1) and lower (2), located in one elevation; drums are connected with tube bank forming convection heating surface. Corridor tube arrangement; cross tube washing with combustion products;
• Side (3) and roof (4) radiant tube forming furnace radiant surface. Radiant surfaces are connected to the circulation through the headers (5, 6, 7). Boiler peculiarity is the absence of non-heated feed and outlet tubes.

Convection and radiant surface are made of tubes diameter 51mm.

Furnace and dividing walls (8) construction in the gas passage are designed according to the boiler heat efficiency and main fuel type.

Boilers are operated in vacuum and under supercharge.

During the fuel burning flue gases of high temperature are formed inside the boiler. Gases going through the boiler flue gas passages wash the tube banks where the water circulates. As a result they partly give their warmth to the water. Due to the density difference the water rises to the upper drum and transfers to the steam and water mixture and then to the steam. Steam is distributed from the boiler through the fitting pipe (11). Cooled flue gases are discharged to the atmosphere through the flue stack or chimney with the help of induced draft fan or steam ejector.

To minimize heat losses of the outer heat radiance surfaces heat insulation is made of fiber material (10) with decorative sheet metal casing. Bottom and part of the front surface is covered with thermal concrete (9).

Control system

Due to the Customer request or project solution boilers are complete with position or smooth heat efficiency regulation, automation and instrumentation for both operator and dispatcher control unit.

Boiler control system room provide:

• Automotive burner start up according to the settled program with preliminary furnace airing and boiler gas circuit;
• Water level position control in the drum, fuel temperature (for liquid fuel burners);
• Position or smooth regulation of heat efficiency depending on the burner type;
• Boiler protection:
  
  - allowable water level;
  - emergency pressure increase;
  - burner flame failure;
  - allowable furnace pressure level;
  - equipment motor overload.
  

© 2008 "The Generation Industrial Group".