AURORA BOREALIS Ltd.

Equipment for the complete cycle of waste management

Own production

Engineering and mounting

Warranty and service

Rotary incinerator production

State ecological expertise

4000+ types of waste

Smokeless

Incinerator that burns everything

We have made for you our best furnace with a spinning drum, automatic control and self-measurement of emissions.

News

01.08.2022 г.

ООО «Аврора Бореалис» расширяет производство

24.04.2022 г.

ООО «Аврора Бореалис» представила инновационные установки с узлом глубокой очисткой отходящих дымовых газов на выставке «WASMA 2022»

08.02.2021 г.

ООО «Аврора Бореалис» получила положительное заключение государственной экологической экспертизы

20.11.2018 г.

В ЯРОСЛАВЛЕ РАЗРАБОТАНА СОВРЕМЕННАЯ ТЕХНОЛОГИЯ ДЛЯ ОЧИСТКИ ГАЗОВ компанией ООО «Аврора Бореалис»

We manufacture incinerators for thermal waste decontamination, gas cleaning units and ceramic heat exchangers.

Our products are manufactured using unique technology of oxidative design in ceramics. Plant consists of a modified incinerator and a unit for high-temperature cleaning of flue gases. Combustion of soot and organic compounds occurs in the channels of the ceramic honeycomb blocks; a ceramic heat exchanger is installed to cool the flow and recover the heat.

Minimum emissions

The level of emissions for main marker substances is 5 times lower than European standards. For example, the level of carbon monoxide emissions is not more than 10 ppm (parts per million)

Rate of processing

The rate of processing in the incinerator - 1000 – 5000 kg of waste per hour

How technology works

From the simulation, it can be seen that, due to the poor distribution of the components inside the “classical” afterburner, incomplete oxidisation of contaminants occurs. At the same time, in this afterburner, the excess of oxygen is high on average. However, there are local zones and “cold corridors” where there is not enough oxygen. It is in these places that pollutants “slip” through.Due to the uneven temperatures, nitrogen oxides are additionally synthesised.

On the other hand, the ceramic cellular blocks used in the Aurora Borealis afterburners both completely eliminate the likelihood of leakage of contaminants and equalise the temperature field inside the device

If you make a dynamic calculation in which the “cold corridors” change their position several times per second, then the advantages of the Aurora Borealis afterburner become even more obvious.

AURORA incinerator device

High energy efficiency

The only incinerator that uses a heat exchanger that heats the air necessary for combustion, our incinerator is the most energy efficient due to the tightness of loading, unloading and sealing units. The use of modulated burners results in greater fuel economy, and the use of automated monitoring systems, including gas analyzers, which work along the entire combustion cycle, allows working with a minimum excess of oxygen

Principle of air cleaning

Our products use the most reliable and versatile principle of emissions cleaning - afterburning. Any organic components contained in the gases to be cleaned are subject to purification with an efficiency of >99%.

In a temperature of about 1000 ° C and the presence of oxygen, the components of the emission are completely oxidised. The result is pure carbon dioxide CO2 and water vapor H2O. The process takes place with an optimal excess of oxygen and in a uniform temperature field, thanks to which the synthesis of nitrogen oxides is minimal.

A wet scrubber is optionally used for cleaning acidic gases (CO2 and HCL)

Withstands thermal shocks and thermal cycles

Our products retain their strength even if the block is hot (> 1100 ° C) and is exposed to cold air. This is achieved through the minimum coefficient of thermal expansion inherent in our ceramic products.

Several ceramic cellular blocks with different channel sizes

In one afterburner we use several successively installed ceramic cellular blocks with different channel parameters. Thanks to this approach, we can adapt our devices to any dust content in the flue gases and additionally stabilize and balance the flow of smoke.

Complete combustion

All organic components, as well as soot and carbon monoxide, are subject to oxidisation at high temperatures

Clean air

After the afterburning process, all components are oxidised to such an extent that they form only two harmless substances: carbon dioxide CO2 and water vapor H2O

Low pressure loss

Thanks to the patented method of production, the channels in the ceramic cellular blocks have a regular structure. Exhaust gases encounter minimal resistance on their way out. This is of key importance when working with large volumes of gas

Resistance to extreme environments

We kept our blocks in hot concentrated sulfuric acid. After 200 hours of testing with the material of the blocks, there was no change

Main advantages of the afterburner

Our afterburner

In our afterburner, two ceramic cellular blocks are mounted in series with different channel sizes. A diffuser and diaphragm are used at the entrance to pre-mix the flows

Other afterburner

For visual modelling, we use one of the “classical” models of the afterburner with tangential (“twisting”) input of components

Our afterburner

In our afterburner, two ceramic cellular blocks are mounted in series with different channel sizes. A diffuser and diaphragm are used at the entrance to pre-mix the flows

Other afterburner

For visual modelling, we use one of the “classical” models of the afterburner with tangential (“twisting”) input of components

Our afterburner

Other afterburner

In our afterburner, two ceramic cellular blocks are mounted in series with different channel sizes. A diffuser and diaphragm are used at the entrance to pre-mix the flows

Temperature distribution

The temperature front is uniform. There are no eddies after the ceramic cellular block. Temperature difference at a static calculation of not more than 120 degrees at the flow front.

Temperature distribution

There is a strong temperature gradient along the entire flow front. This is the reason for the synthesis of nitrogen oxides (in the hot zone). A temperature difference in the static calculation of more than 1000 degrees is at the front of the flow.

Concentration of O2 (oxygen)

A uniform distribution of the oxidising agent is observed throughout the gas flow section.

Concentration of O2 (oxygen)

Due to the irregularity of the vortex, in the middle of the channel there is a lack of O2 for the oxidisation of the reaction products. As a result, in the middle of the stream there is no complete combustion of the pollutant components in the gaseous emissions.

CO concentration (carbon monoxide)

There is a complete oxidisation of carbon monoxide to carbon dioxide.

CO concentration (carbon monoxide)

An incomplete oxidisation of carbon monoxide is observed inside the stream due to a lack of oxygen, although the flow is turbulent.

Concentration N0 (nitrogen oxides)

The main zone of synthesis for nitrogen oxides is the area of the burner flame. The synthesis of oxides inside the flue flow does not occur. On the contrary, there is a partial reduction to harmless N2. Maximum concentrations are 3 orders of magnitude lower than in a device without a ceramic cellular block.

Concentration N0 (nitrogen oxides)

The main synthesis zone of N0 is the upper part of the afterburner, where optimal conditions for the process were created due to the local high temperature.

Gas cleaning unit

Boot device

We have implemented a lock gate, which provides:

Continuous loading
It is not exacting to the loaded material (material can be fibrous, winding and can be large and solid size 200 x 200 x 200)
Ensures the tightness of the combustion chamber. This is important for three things:
- No smoke
- The ability to install the device indoors
- The absence of air leaks (if the loading device does not ensure tightness, then at the moment of loading the temperature inside the waste incineration chamber changes significantly).

Rotating drum

Provides:

Dredging waste
Ash removal in the simplest, most effective and reliable way

Our drum is lined with refractory bricks and it gives:

The ability to maintain high temperatures inside the combustion chamber with less fuel consumption
Many times increases the service life of the combustion chamber

Sealing units

We use a ring seal system using graphite plates that provide:

Almost complete tightness
High temperature resistance
Large service interval (once every three years to change plates for round-the-clock work)
The seal not only effectively compensates for the distortion of the geometry of the shape of the pipe, but even allows for a change in the angle of inclination of the drum without losing tightness.

Sediment chamber and discharge unit

In the sediment chamber, due to the increase in the conditional passage, the speed of movement of the flue gases is significantly reduced. As a result, the number of settling particles increases.

The design of the bunker provides:

Purification of waste residues. The ash is kept at a high temperature for a long time, which ensures a guaranteed purification of all the components and contributes to an increase in the productivity of the incinerator by approximately 10%.
The design of the unloading mechanism for the storage bin eliminates the possibility of jamming. The ash from the rotating drum enters the storage bin, in which it can be at high temperature for a few more hours. This ensures complete combustion of waste and increases productivity.

Serial sample

According to the results of the introduction of the thermal gas cleaning unit at the incinerator, the following indicators were achieved:

Excluded salvo emissions of soot and pollution at the time of loading the next batch of waste
Increased plant capacity by 30%, thanks to an efficient supply of secondary air
Reduced natural gas consumption by 20%, due to heat recovery and maintaining optimal excess oxygen

Indicators of the main pollutants:

CO gas - 5-10 ppm
Nitrogen oxides 1 NOx – 2 ppm
Total organic pollutants СxNy – less then 1 ppm
The oxygen content is 2-4%
The volume of purified emissions is from 7000 m3

Advantages

Quartz covers

Instead of stainless steel for mounting instrumentation

Structural reliability

No moving parts in hot equipment areas

Digital monitoring

Predictive diagnosis of the problem, thanks to the tools integrated into the incinerator

Convenient service

Sophisticated incinerator design facilitates access to necessary nodes

Reliable coverage

Critical components (directional rotating drum) are coated with aluminum and stainless steel. Such coatings are orders of magnitude superior to conventional paintwork

ООО «Аврора Бореалис» получила положительное заключение государственной экологической экспертизы

Резидент Сколково – компания ООО «Аврора Бореалис» 08 февраля 2021 г. получила положительное заключение государственной экологической экспертизы на инновационную установку по утилизации и обезвреживанию отходов с узлом глубокой очистки отходящих газов серии «Аврора».

В установку встроена уникальная система очистки отходящих дымовых газов, которая позволяет очищать выброс на 99,9%. Уровень выброса по основным маркерным веществам ниже европейских норм в 5 раз. Сжигание сажи и органических соединений происходит в каналах керамических сотовых блоков собственного производства. Блоки нагреваются до 1000 градусов и все органические выбросы сгорают, проходя через них. Блоки легко чистятся и имеют долгий срок службы.

Установка может утилизировать от 1 до 5 тонн отходов в час с 2 по 5 класс опасности. Перечень ФККО включает более 4000 категорий отходов.

Максимальное сохранение тепла в установке достигается за счет полной теплоизоляции компонентов установки в том числе за счет футеровки огнеупорным кирпичом. Это позволяет избегать лишних затрат на топливо и достигать высоких рабочих температур, работу в непрерывном цикле.

Получая данные с 8 точек анализа состава газов, с 10 точек контроля разряжения и 15 точек измерения температуры, система управления самостоятельно ведет подстройку модулируемых горелочных устройств, расхода первичного и вторичного воздуха, тяги и управляет процессом загрузки.