The best solution for the elimination of particulates emitted by diesel engines

Particulate filter with an additive and Miretti external regeneration:

The two filters use a support of silicon carbide with particulate abatement above 98%. The one with additive initiates automatic regeneration when the exhaust gas exceeds 250°C without the necessity of its removal from the machine. That with external regeneration must be removed every time then regenerated on the apposite regenerator.

With Additive:

Advantages: extremely high efficiency, long duration, low operating cost, minimal maintenance, elimination of machine downtime, excellent environmental performance and comfort for workers, rapid depreciation costs. no regeneration units, extremely robust and reliable filter, low counter pressure at the exhaust, optimum exhaust silencer, Power capacities: 20 to 400 KW, for higher powers additional filters are installed.

With external regeneration 

Miretti particulate filter Mine-X

Catalyzed: almost completely eliminates particulate matter (99%) and PM10 (when the fumes reach 200°C, also eliminates carbon monoxide and unburned hydrocarbon residues).

It is used primarily in machines where the temperature of the exhaust gas reaches 400°C for at least 20% of the time in use of the engine.

It regenerates during the normal cycle of use.

Advantages: extremely high efficiency. long duration. low running cost, minimal maintenance, elimination of machine downtime, optimum environmental results.

The water-based purifier (series M - H)

The water-based purifier (series M - H) is manufactured entirely in stainless steel to resist corrosion by the pollutant substances that are deposited in its interiorin acciaio inossidabile per resistere alla corrosione delle sostanze inquinanti che si depositano al suo interno.

The water-based purifier is used exclusively on diesel engines whether they are stationary or mounted on self-propelled machines.

The so-called "black smoke or particulate matter" and the resulting odours and irritants (es. aldehydes, unburned part) are abated.

The purification takes place by bubbling pollutant fumes in water. From laboratory analysis, it is shown that optimum results are obtained in the abatement of sulphur dioxide  (SO₂).

The water-based purifier (M series), is also used for spark-quenching in the explosion-proof field.

Several types of kits are available for rapid mounting on lift trucks.

Advantages of water-based purifiers:

Spark-quenching

The exhaust spark-quencher has been designed for the elimination of any sparks emitted by diesel engines.

Manufactured entirely in stainless steel, it has been tested and approved by a laboratory for use in potentially explosive atmospheres given its unique characteristic of preventing the escape of any sparks from the exhaust of diesel engines.

They exist in various dimensions for power ratings from 15 to 300 kW.

Special realisations for tunnels and mines

The Miretti catalytic converters for small and medium power engines use the same technological principles and have the same reliability characteristics as the catalytic converters for high power engines.

They are both the standard products for powers ranging from 2 to 800 KW and for products to customer specifications as well as manufactured specifically for use on various vehicles powered with gas, diesel or petrol, such as:

• forklift trucks, for which kits are available for major brands
• earth-moving equipment
• trucks and buses
• machines for mining and tunnelling
• civil and industrial maintenance machinery
• stationary engines intended for a wide variety of uses

The advantages of catalytic converters for small and medium capacities

• the rapid reaching of working temperature resulting from the high thermal conductivity of the metallic substrate;
• The low counter pressure due to the constructional characteristics of the catalytic substrate, a very high conversion efficiency.
• The availability in stock of products both standard and dedicated allows the professional user to meet the needs of the end customer.

Technical data for the correct dimensioning of a catalytic purifier:
√ Small and large engine powers
√ Big power

The Miretti catalytic converter is actually the most technologically advanced product for the purification of exhaust gases of engines powered by methane gas (lean burn and rich burn) and diesel engines..

With the experience gained over tens of millions of hours of work with very high reliability, these purifiers operate on a continuous cycle and are designed to withstand high mechanical shock and temperatures.

They are available in a wide variety of dimensions and are manufactured according to customer needs, with or without flanges on technical specifications of the customer, with very rapid delivery times

They benefit from a rapid opening lid for inspection and maintenance; are manufactured in stainless steel; the substrate ensures extremely high catalytic conversion efficiency.

They are predisposed to house further substrates in case of need. They use an ultrafine metallic substrate in honeycomb form to ensure minimum counter pressures.

The entry cone ensures a uniform gaseous flow on the catalytic substrate and that of the outlet of low turbulence. Various accesses are predisposed to carry out various measures and for the insertion of thermocouples, which we can supply.

A qualified technical assistant is at the disposition of customers both in the initial phase of design, - based on engine data, the characteristics of the exhaust gas and the maximum allowable counter pressure that are calculated, the catalytic converter is dimensioned,- and during the subsequent phase of assembly and operational functioning.

In the case of  "rich burn” natural gas engines with stoichiometric air/fuel 1:1 rapport cutting down nitrogen oxides by up to 98%.