KWM-SP - fines and pea coal-fired heating furnace with drawer feeder unit

fines-fired heating

  1. Description
  2. Specifications
  3. Dimensions
  4. Control
  5. Configuration
  6. Gallery

Description

KWM-SP central heating furnaces make up new generation of heating furnaces fired with solid fuel. These are low-temperature, water, steel heating furnaces, designed for burning fine coal or eco pea coal type II of particles size from 5 to 25 mm. It is recommended to use dry fuel. The highest calorific value the better heating effect. It is recommended to use fine coal of decreased expanding properties, decreased sinterability and high ash melting point.

Features

KWM-SP heating furnaces are characterized by low emission of deleterious substances proved by suitable approvals. They were granted an ecology attestation and conformity certificate with standard PN-EN 303-5 issued by the Institute of Chemical Processing of Coal in Zabrze. Main feature of this kind of heating furnaces is modern solution for automatic drawer feeder unit with fuel feed hopper which gives the possibility of burning several kinds of fuel. Feeder unit and the process of burning is controlled by microprocessor-based regulator. Automated way of feeding fuel directly to the grate with appropriate amount of air blown into the furnace make that this heating furnace is distinguished by high heating efficiency. Additional advantage of drawer feeder unit is quiet operation.

Operation principles

For covering actual demand for heat, only appropriate amount of fuel is being burned on the grate made of cast-iron. Solid combustion products, such as ash and ash slurry, are being forced down to ash pan automatically when feeding following batch of fuel. Heating furnace is equipped to grate for traditional burning which must be taken out during automated operation. Heating furnace has a cuboidal design and was made of high quality approved steel. Elements are being fused together using technique of hot gas welding and joint one to another with bracing staybolts creating water space between walls.

Body of the heating furnace consists of furnace part and convection part. In the bottom part of the body there is a furnace with grate, underneath there is a blown-in air chamber and in the rear bottom part there is a tray for storing ash. Air for the furnace is being supplied by fan through grate made of cast-iron. Convection part consists of channels that enable combustion gases flow from combustion chamber to flue and smoke conduit. Combustion gases are being brought up to the chimney through smoke outlet which is located in the upper rear part of the heating furnace.

Fuel is being dumped into fuel container and then fed by feeder unit (propelled by motoreducer) to the furnace. Ash is being pushed out by fresh fuel outside of the furnace into ash pan.

Protection

KWM-SP central heating furnaces are to be mounted according to standard PN-91/B-02413 and BN-71/8864-27 regarding protection heating water devices in open system and collecting vessels in open system.

Fuel type

fine coal
pea-coal

Specifications

Technical data KWM-SP 19-150 kW
1. Type KWM-SP   192538506075100120 150
2. Rated powerkW 192538506075100120 150
3. Heating surface 2,03,04,05,06,07,510,012,0 15,0
4. Heated area -160160-
200
200-
300
300-
400
400-
500
500-
650
650-
900
900-
1100
1100-
1400
5. Fuel type  Hard coal according to PN-82.G7001-3 fine coal MI grade, type 32.1 class 25/12 or pea coal type 31.2 with the granulation/size of 5-25 mm
6. Fuel consumption at the rated powerkg/h 3,44,56,89,011,014,018,022,0 28,0
7. Fuel bunker capacitykg 83103129147170180260300 400
8. Boiler water capacityl 79109126187201207453562 690
9. Boiler`s weightkg 35445451769073283812901450 1812
10. Max. water temperature°C 90
11. Max. working pressureBar 1,5
12. Test pressure Bar 4,0
13. Thermal efficiency % 80
14. Required flue gas draftPa 25 30 35
15. Required stack heightm 7
16. Required stack hole cross-section cm² 280400500 700 750
ø 190 230 255 300 310
17. Power consumption (230V/50Hz) W 170 255

Dimensions

KWM-SP unit 19 kW 25 kW 38 kW 50 kW 60 kW 75 kW 100 kW 120 kW 150 kW
A mm 785 900 900 1070 1070 1070 1495 1495 1948
B mm 1500 1660 1660 1830 1830 1830 2750 2750 3450
C mm 1300 1500 1500 1500 1555 1555 1960 2040 1950
D mm 1200 1340 1340 1351 1401 1401 1495 1575 1800
E mm 1165 1305 1305 1316 1366 1366 1360 1440 1656
F mm 1005 1146 1146 1146 1196 1196 1208 1223 1308
G mm 180 180 180 180 200 200 240 270 320
H mm 180 180 180 180 200 200 240 270 320
I mm 410 470 555 655 720 785 882 972 978
J mm 446 506 591 691 756 821 918 1015 1022
K mm 350 320 350 350 350 350 220 220 220
L mm 495 630 630 730 750 750 1075 1075 1428
M mm 1745 1890 1890 1940 1940 1940 2460 2560 2650
a ø ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾"
b ø 2" 2" 2" 2" 2" 2" 88,9mm 88,9mm 114,3mm

Control

Control device ST-480H.

Configuration

Offered versions of heating furnaces depending on location of door and flue. Top view.

Gallery

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