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Waste oil burners Kroll

Many of our engineers consider Kroll burners to be the benchmark for ejection atomization and fuel combustion. I agree with them only in terms of protection mechanisms that do not allow the burner to cause significant damage from incorrect operation. Without these mechanisms, the operation of the burner according to this principle - an open fuel heating tank - requires increased attention. I wrote about protection in Kroll burners almost at the very end of the brief review. In the meantime, the general and no less important.


The appearance of the burnersKG/UB-20, KG/UB-55, KG/UB-70, KG/UB-100

The appearance of the burnersKG/UB-150, KG/UB-200


Kroll one of the oldest brands producing universal oil burners. They are made in Germany and Russian market gained high popularity among universal torches for combustion of the fulfilled oils.

Over the years, the design of the burners has not changed at all, and on the one hand, this is good, because constant changes in the design of the burner indicate that the product is “raw”. On the other hand, it’s bad, is there really nothing to add to the design in 20 years?

Overview of the universal burner Kroll KG / UB

It would not be bad to make small changes in the direction of simplifying maintenance, and more on that later. Add fuses in the power supply circuit of the executing devices. Or add the ability to adjust the reach of the nozzle assembly relative to the flame tube.

[sometimes needed]

Open heating in the burner tank with temperature control up to 140 degrees allows you to use used oils with high temperature flashes, such as diesel engine oils. For such oils, temperatures of 70 gr. not enough to ignite and it becomes more difficult for the burner to start. Either dilute with diesel fuel, or trick the system with gas ignition - that's another pleasure.

[Where's the savings? ]

What about the heating element itself? In burners of small capacity of model 20, 55, 70, the power of the heating element of 1.1 kW is excessive. As a result, coking on the heating surface. Let me remind you that fuel tank maintenance is 4 hours of painstaking work or 6 hours for an untrained specialist.

[ somehow not user friendly ]

The principle of operation differs from American-made burners primarily in the absence of a metering pump, fuel is not supplied to the spray nozzle under pressure, but is sucked from a small tank on the burner compressed air on . This creates a dependence of the nozzle flow on the fuel level and the cleanliness of the fuel intake pipes. And this is in addition to another dependence - on temperature, and hence the viscosity of the fuel in the burner tank, which "floats" in the range of +/- 10 0 С

[pulses, then brighter, then dimmer]

The German manufacturer does not install an integrated compressor on its burners, but supplies them as a separate unit and it is called. Pretty expensive "toy" but very durable. Such a compressor is called "dry" and does not require lubrication. And most importantly, it is very quiet. Those who are tired of shuddering from the starts of a piston compressor are worth considering.

[nerves are not iron]

About safety systems on Kroll burners

Due to the large number of different sensors on the Kroll burner, its operation is as safe as possible, which has gained its popularity. Although not at all with this, but with the powerful work of the representative office and an empty market niche at the dawn of the development of "waste oils" as fuel, no one talks about this, although everyone guesses.

Only on these burners is installed additional protection against fuel overflow and secondary air pressure control from the pressure fan. That is, protection against any failure, gives confidence that you can sleep peacefully, which don't talk about others manufacturers who consider these "bells and whistles" superfluous.

[ European directives ]

The high-pressure fan allows the burners to be operated on heat exchangers with high flue gas resistance, without any noticeable power loss. But this does not mean that the burner should be placed in a boiler with a lower power of the burner's operating range. Remember - heavy hydrocarbons burn slowly, they need space! Otherwise, traces of incomplete combustion will be visible immediately in the furnace. And another effect of the discrepancy between the heat output of the boiler-burner pair is premature damage to the boiler lining.

[ and this expensive pleasure ]

The burner kit includes:

  • burner device
  • fuel transfer pump with filter (option)
  • burner flange gasket
  • manual and data sheet
The disadvantages of the Kroll burner are:
  • a complex design that makes it difficult to quickly and efficiently service,
  • lack of adjustment of the nozzle assembly relative to the flame tube
  • built-in compressor.
  • absence of intermediate relays of executing devices
Peculiarities:
Fuel heating system - open

Improvements and upgrades:

It is possible to increase the power of Kroll burners using nozzles of a different rating, for example, nozzle # 49 or equivalent

Our wishes to the manufacturer:

Implement adjustment of the nozzle assembly relative to the flame tube
add intermediate relays of executing devices
complete the compressed air regulator with a moisture separator
on younger models, use a heating element of lower power

This also includes oil from rapeseed and sunflower crops.

  1. Fuel from the remains of furnace ash.
  2. Fuel diesel.
  3. Fats are animals.

To fully replace the fuel from one type to another, it is necessary to adjust the air supply and the heating temperature. There is no need to open or change burners.

Benefits of using burners from Kroll

The company that develops kroll burners produces products with the KG / UB series. Such equipment is equipped with a huge kind of characteristic features:

  • A fully developed and carefully assembled filtration system. It allows you to carry out all activities in stages: initially, the fuel is filtered and heated, and then it burns out, leaving no smoke or smell.
  • The kroll kg ub burner used contributes to a significant reduction in heating costs industrial enterprises, in which there is used oil from organizations such as: car services and car dealerships, metal buildings for vehicles, extensive transformer booths, train parking, ship repair plants.
  • Kroll KG burners can be used in the food industry where there is too much used vegetable oil residue or in agricultural production.

Great offer fromKroll GmbH

Burners Kroll KG UB 450, 900 and 1300 have a capacity of 460, 910 and 1290 kW. Such characteristics contribute to the use of recycled oil for heating large areas of buildings and institutions: transport sales organizations, large organizations with their own fleet of vehicles and other large organizations with their own boiler houses.

The sale and purchase of Kroll burners is an absolutely unique deal on the Russian market.

Why are Kroll burners good?

The unique Kroll kg burner should be purchased already due to the fact that it has the following bonuses:

  1. They have optimal parameters, which makes it possible to use them on water heating boilers and devices that produce heat from different manufacturers.
  2. The main components of the kroll burner are quickly mounted and are in free access. At the same time, they do not require a complete analysis of the equipment.
  3. The burners have several safety circuits and an emergency thermostat. This helps to prevent breakdowns due to network overloads, as well as to achieve a standard temperature value.

An additional advantage in choosing this burner is the ability to supply a large number equipment. So, in the expanded delivery, you can add:

  • A device for supplying fuel, in addition to which a floating fuel intake is included.
  • Minimum fuel filter.
  • Pump for pumping oil.
  • Fuel line.

All this makes the choice of a burner from Kroll the most useful, economical and efficient for any room or building.

Universal waste oil burners KG/UB manufactured by KROLL (Germany)

Kroll waste oil burners are a complete system ready to be installed on hot water boilers and heat generators of almost any manufacturer. There are 9 models in the range of Kroll waste oil burners from 25 to 1276 kWh. All burners are regulated in terms of performance, each in its own small range, which ensures fine tuning and, as a result, complete combustion of fuel without soot formation and stable operation. Any type of waste oils with a viscosity of up to 90 units according to SAE classification, vegetable oils, diesel fuel, as well as fuel oil can be used as fuel. Require adjustment of the heating temperature when switching from one fuel to another.

Specification and technical data Models KG/UB 20 - 200


Burner
KG/UB 20 		Burner
KG/UB 55 		Burner
KG/UB 70 		Burner
KG/UB 100 		Burner
KG/UB 150 		Burner
KG/UB 200
Kroll burners series KG/UB
Thermal power, kW 26 - 38 37 - 54 56 - 81 81 - 100 93 - 147 131 - 190
Fuel consumption, l/h 2.1 - 2.8 3.7 - 5.4 5.1 - 8.4 6.0 - 10.2 7.1 - 12.1 10.9 - 16.9
Applied fuel

Mineral and synthetic used automotive oils, oils for automatic transmissions, gear oils with a viscosity up to 90W according to SAE , industrial oils, hydraulic oils, diesel fuel, kerosene, oils plant origin, light and dark heating oil.
Compressed air consumption, m3/hour 4,8 4,8 4,8 4,8 9,0 9,0
0,5 0,8 0,8 0,8 1,0 1,1
1,21 1,21 1,21 1,21 1,35 1,35
Electrical connection requirements 240 VAC, 50 Hz, 16 A (leased line)
Dimensions:
length/
height/
width, mm 		560/560/400 560/560/400 560/560/400 560/560/400 560/560/630 560/560/630
Weight, kg 15 15 16 16 26 26
Contents of delivery Burner with spray nozzle, fuel pump, serviceable heated fuel filter, fuel pre-heater, fuel intake.
Additional options Air compressor for supplying compressed air, fuel tanks of various designs and volumes, chimney kits.

Specification and technical data Models KG/UB 450 – 1300


Universal burner
KG/UB 450 		Universal burner
KG/UB 900
Universal burner
KG/UB 1300
Universal waste oil burners Kroll series KG/UB
Thermal power, kW 174 - 465 349 - 928 465 - 1276
Fuel consumption, l/h 15 - 42 30 - 80 40 - 110
Applied fuel Mineral and synthetic used automotive oils, oils for automatic transmissions, gear oils, industrial oils, hydraulic oils, diesel fuel, kerosene, oils of vegetable origin, light and dark heating oil, fuel oil.
Compressed air pressure, bar 0,4 - 1,2
Consumed electrical power, kW 1,25 2,25 3,05
Electrical network parameters 380V/50Hz
Dimensions: length/height/width, mm 1120/730/365 1252/860/455 1520/920/600
Weight, kg 71 85 133
Contents of delivery Burner assembly, built-in fuel metering pump, fuel filter, fuel pre-heater, built-in air compressor.
Additional options Heated magnetic fuel filters, fuel tanks of various designs and volumes, chimney kits.

Fuel from the tank through a filter with a cell of 100 microns is pumped into a small container with a heating element placed on the body of the burner, where the fuel is heated to a temperature that provides the required viscosity. Depending on the type of fuel, the thermostat sets the heating temperature in the range from 0 to 140°C. The used oil heated to a predetermined temperature is sucked into the fuel line by compressed air from the compressor and sprayed through the nozzle, turning into a finely dispersed mixture at the outlet. Ready fuel-air mixture is ignited by electric arc formed by a high-voltage transformer and ignition electrodes. The burner motor with fan impeller supplies secondary air to the combustion chamber of the boiler or air heater to maintain combustion. The volume of secondary air is regulated by a damper. The air flow, passing through the swirler installed in the burner nozzle, forms the correct oval of the flame, which contributes to stable combustion and maximum complete combustion fuel.
For the operation of burners models KG / UB 20 - 200, an additional connection of an air compressor is required. Burners models KG/UB 450 – 1300 have an integrated compressor.

Fuel pump and filter (fispacket)

The set of waste oil burners Kroll models KG / UB 20 - 200 includes a fispackage, which includes a serviceable fuel filter with a filter element made of stainless mesh with a cell of 100 microns, which is installed in a collapsible duralumin housing, a fuel pump for supplying oil into the burner, pump drive electric motor. All elements are compactly placed on a metal platform. A fuel pick-up fitting with a float is also included in the Kroll burner kit.

Applicability

Universal burners KG / UB are designed for installation in hot water boilers and air heaters of foreign and domestic manufacturers with reversible and other combustion chambers.
Please note: in some boilers with a certain furnace geometry, it is necessary to use an afterburner. For more information for correct selection you can contact our specialists.

light and dark heating oil;

diesel fuel;

  • Fuel and quality that meets environmental requirements

    Without major reconfiguration of the Kroll burner, mineral, vegetable and animal oils can be used as fuel. Special tools - not required. To switch from one type of fuel to another, only the adjustment of the air supply and the change in the fuel heating temperature are required.

    • Rapeseed oil*
    • Sunflower oil*
    • Palm oil*
    • Used oils*
    • Animal fats*
    • Mineral oils*

    Vegetable oils get all greater value due to rising prices for fossil oils. Their energy density lies very close to that of liquid fuels. Vegetable oils are renewable, CO2-neutral and do not contain any sulfur or heavy metals.

    Economy

    Being independent of the energy market also means savings. Agricultural enterprises can even do without additional purchase of fuel for heating.

    Application

    Heat generators are one of the most economical ways to heat warehouses, workshops, industrial premises etc. Especially if they are used with a universal burner. Kroll offers wide range suitable heat generators

    Specifications

    KG/UB 20-PK KG/UB 20 KG/UB 55 KG/UB 70 KG/UB 100 KG/UB 150 KG/UB 200
    Performance* kW 14-24 26-38 37-54 56-81 81-100 93-147 131-190
    Fuel consumption * kg/h 1,4-2,3 2,5-3,9 3,6-5,2 5,4-7,8 7,8-9,6 8,9-14,1 12,7-18,0
    Motor AT 230/50Hz
    Tue 110 250
    A 0,85 1,40
    Fuel heating Power Tue 350 1.100
    Electrical connection AT 230
    Tue 460 1.210 1.350
    A 2,3 6,0 6,4
    Number of turns rpm 2.800
    The weight kg 11,5 15 15 16 16 26 26