We reduce emissionsExhaust Gas Purification Systems

The considerable increase in environmental pol-

lution due to combustion processes has induced

many countries to introduce strict standards for

the quality of exhaust gases. Particulates and

exhaust gases cannot only damage the environ-

ment but also the human body.

Very toxic exhaust gas components, such as ni-

trogen oxides, carbon monoxides and unburned

hydrocarbons are produced during the combu-

stion of fossil fuels. In addition to the gaseous

pollutants, diesel engines emit particulates, i.e.

soot with attached carbons.

It is our declared aim to help you reduce your par-

ticulate and exhaust gas emissions – worldwide!

Hug Engineering AGHug Engineering AG, founded in 1983, is the leading

manufacturer of exhaust gas purification systems for

various types and sizes of engines used in stationary

plants such as electric and thermal power stations as

well as for mobile installation in transport vehicles,

trains, ships and yachts.

From A to Z, everything from one supplier

The main activities of Hug Engineering AG are the

planning, design, production and sale of exhaust gas

purification systems and are carried out indepen-

dently within the company.

The wide range of in-house manufactured products

such as catalytic converters, diesel particulate filters,

control systems and reactors make Hug Engineering

AG the only supplier who can provide the main com-

ponents of a project without having to use external

suppliers.

Internationally recognised

In addition to the many satisfied customers, various

international certifications such as VERT, EN 15085,

DIN ISO 9001, and Lloyd’s verify the quality and func-

tionality of the systems produced.

The VERT certificate is an internationally recognised

attestation of the efficiency of the filtration of ultra-

fine particles.

The Lloyd’s certification confirms the safety of our

filters for marine applications.

EN 15085 is a high welding standard particularly

used in the railway sector.

All of our processes are certified to DIN ISO 9001

standard.

International sales

An extensive distribution network allows us to be

present in the main international markets and the-

refore guarantees support in sales and service of the

products – worldwide.

Many years of experience

We can look back on more than 25 years of expe-

rience in catalytic exhaust gas purification of emissi-

ons in many areas:

In the stationary sector:

• diesel and gas engine in power stations

• combined heat and power (CHP) systems

• peak current supply and emergency current

supply systems

• refuse incinerators

• greenhouse combined heat and power

systems (CHP)

In the mobile sector:

• yachts

• ocean going vessels

• pleasure boats, river boats

• locomotives, track construction machines, railcars

• commercial vehicles, buses

• construction machines, municipal vehicles

A product range for every application

Our product ranges, grouped in brands for the various

areas of application are:

mobiclean R 15-650 kW for construction equip-

ment, commercial vehicles, municipal vehicles, river

boats, vehicles and equipment for the agricultural and

forestry industry as well as for stationary applications

mobiclean® 200-5’000 kW for rail applications

nauticlean® 200-5’000 kW for applications on

yachts

marine 500-40’000 kW for application on ships

and ocean going vessels

combikat® 200-40’000 kW for stationary appli-

cations

COdiNOx® 200-6’000 kW for CO2 fertilisation

in greenhouses

TechnologiesWe have many years of experience in manufacturing

diesel particulate filters and catalytic converters and

our work is based on the following methods:

• diesel particulate filters with catalytic soot

combustion

• SCR – selective catalytic NOx reduction

• catalytic oxidation of HC and CO

With the SCR technology using urea for diesel en-

gines and with catalytic particle filter technology, we

are proud to be one of the world‘s pioneering com-

panies.

Selective catalytic NOx reduction

Nitrogen oxides (NOx) may lead to paralysis of the

central nervous system or even pulmonary oedema.

They are also responsible for creating smog and are

a forerunner substance for ozone.

The nitrogen oxides NO and NO2 are neutralised by

a selective catalytic reduction (SCR) process. This re-

action is possible thanks to the residual oxygen con-

tained in the exhaust gases.

The exhaust gas mixed with a reduction reagent (ge-

nerally urea solution), flows through the honeycom-

bed catalysers. The nitrogen oxides (NOx) react on

the active surface of the catalytic converter together

with the reactant and reduce NO and NO2 to water

and nitrogen.

NOx reduction rate can be achieved to up to 99%.

Catalytic oxidation of hydrocarbons and car-

bon monoxide

Carbon monoxide is a colourless and odourless gas,

which has a considerably higher affinity to blood

haemoglobin than oxygen. Consequently, this leads

to poisoning of the body due to lack of oxygen.

The reduction of carbon monoxide and unburned

hydrocarbons is achieved by installing an oxidation

stage after the SCR reduction.

The harmful gases come into contact with the active

surface of a honeycombed ceramic catalyser, which

is coated with precious metals. The oxidation takes

place on the active surface.

Oxidation rate of HC and CO can be achieved to up

to 99 %.

The diesel particulate filter (DPF)

During combustion in a diesel engine, there is a lack

of oxygen which leads to the formation of soot parti-

cles of various sizes, which can be extremely fine.

The average diameter of a diesel particulate is about

80 nanometre. The smaller the ultra-fine particles,

the more hazardous they are. Diesel particles are

highly carcinogenic and contribute considerably to

global warming.

Our diesel particulate filters are based on a ceramic

honeycomb structure made of silicon carbide (SiC),

which allows the exhaust gas to flow through the

porous honeycomb walls. During this process parti-

cles of all sizes are deposited on the filter substrate

and are, thanks to the catalytic coating, converted to

CO2 and water vapour.

In order to comply with different layouts of diesel

particulate filter systems, a range of filter variations

in geometry and structure are used.

Hug Engineering diesel particulate filters remove

more than 99% of soot and particles in the range of

20-300 nanometre.

Selective Catalytic NOx Reduction SCR

toxic nontoxic

4 NO + 4 NH3 + 02

catalyst

4 N2 + 6 H2 0

catalyst

NH3

NH3 (as urea)

O2

NON2

H2O

nitrogenmonoxyde

ammonia oxygen nitrogen water

catalyst

Catalytic CO and HC Oxidation

CO

HC O2

CO2

toxic nontoxic

CO + HC + O2

catalyst

CO2 + H2O

carbon monoxyde

oxygen watercarbon hydrogen

carbon dioxyde

H2O

catalytic soot filter

catalytic soot filter

sootparticles O2

CO2

Catalytic Soot Particulate Filter

toxic nontoxic

C + HC + 02 CO2 + H2O

carbon oxygen watercarbon hydrogen

carbondioxyde

H2O

Poisonous gases are converted into non-poisonous gases without leaving any deposits.

Research & developmentStarting with a revolutionary idea, a team of experts

of committed engineers and technicians develop new

products for the reduction of emissions in exhaust

gases. Permanent innovation is the central focus and

is the key to the development of the company‘s own

products, processes and technologies. Therefore,

new systems are thoroughly tested. Possible defects

are detected in pre-simulations so that they can be

eliminated before the production phase begins.

Our own laboratories with state-of the-art equip-

ment allow test cycles to be carried out with both,

real engine exhaust gases and with synthetic gases.

Planning

Our specialists with many years of experience will

propose solutions based on your requirements.

Design and productionDesign and production of the filters, catalytic con-

verters and housings takes place in our company.

The respective control systems are also developed,

manufactured and assembled in the company‘s own

factory. This ensures an integrated, tailored produc-

tion.

Design

Thanks to the latest IT technology, the designers are

able to integrate the customer‘s specifications easily

and economically into the production process.

Ceramics and catalytics

Hug Engineering manufacturers its own honeycomb

in various structures and sizes.

New ceramic materials and catalyser coatings are de-

veloped in the chemical laboratories of the company.

After a validation phase, they go into industrial pro-

duction. Small batches are also possible in order to

meet special customer requirements.

Control system

The wiring diagrams and the programme documen-

tations are produced in the electrical engineering de-

partment of Hug Engineering AG. Before the complete

system is delivered to the customer, it is inspected

with the aid of process simulators.

Reactors and assembly of the catalysts

The catalyser modules and filter elements are instal-

led in the reaction chamber. Easy and speedy replace-

ment of the elements is possible thanks to access

doors in the reactor. The compact reactor is made of

stainless steel and the design takes account of the

stress which may occasionally occur due to pulsation

of the exhaust gas pressure.

Service and spare partsFor Hug Engineering, customer service means fast

delivery of high quality, original spare parts. Our

experienced team of specialists efficiently answers

your questions on site or by phone. A comprehensive

stock of spare parts is available, both at headquar-

ters in Switzerland and at branch offices.

Our customers profit from our organisational struc-

ture which guarantees an efficient and punctual

service.

Hug Engineering AG Environmental technologyExhaust gas purification system

Im Geren 14

CH-8352 Elsau

Switzerland

Phone +41 (0)52 368 20 20

Fax +41 (0)52 368 20 10

www.hug-eng.ch

Hug Engineering for safe and efficient exhaust gas purificationThanks to the experience gained over more than

twenty-five years and the excellent relationships with

numerous customers, Hug Engineering has built up

know-how which can be characterised as follows:

• consulting, engineering, design, production and

installation of the best possible solution for our

customer‘s requirements

• both, standard products and bespoke solutions

• high standards of quality

• tested and certified products

• a single partner for our customers

• everything from one supplier

• neutral and independent

• made in Switzerland

• 24-hour support

• large spare parts warehouse

• first-class service

Our corporate policy is to solve our customers‘ ex-

haust gas problems with safe and pragmatic me-

thods using economic high quality products.

Basing our activities on satisfied employees, we en-

deavour to continue cultivating a fair cooperation

with our customers and partners.

BernLucerne

Winterthur / ElsauZurich

Basel

Geneva

SchaffhausenConstance

Frauenfeld

Wil

St.GallenZurich

WinterthurElsau

Bulach

Baden