1

BIOFUEL BOILER-HOUSES AND

THEIR EQUIPMENT

2

3

JSC “Enerstena” - rapidly evolving, innovative and dynamic, one of the largest companies in

energy sector in Lithuania. Currently the company has around 200 employees. All supervising

employees have university degree in technology, majority of them are members of Lithuania

heating technology engineers association and have necessary certificates for practice. Cons-

tant training and ongoing deepening of professional knowledge is one of the main tasks of the

company in developing a qualified and responsible employee.

We believe that by utilizing our professional knowledge, experience and modern technology we

can complete great projects in the field of energetics!

We design, produces and install automated water heating and steam boilers, furnaces, fuel

supplying and ash removal conveyors, hydraulic systems, automation systems and other equi-

pment. Our projects are carried-out from the idea to the “turnkey”.

Certificates of company’s activity:

The company’s equipment is certified for the Belarusian market:

C\J00U")

U")

o~Z•....•oo

I•....•-<

L1ETUVOS RESPUBLIKOS APLINKOS MINISTERIJA

AtestatasNr.3082

UAB "ENERSTENA"Imon~skodas:151465326

Raktaiolil.{ g. 21, IT-52181 Kaunas

Suteikiama teise atlikti statinio projektavimq ir statinio statybClrkultoros paveldo objektLj tvarkybq.

StatiniLj kategorijos: ypatingi statiniai.StatiniLj grupes: gyvenamieji ir negyvenamieji pastatai; inzineriniai tinklai: dujLj, !iilumos tiekimo; kultoros paveldo

statiniai.Projektavimo darbLj sritys: sklypo sutvarkymo (sklypo plano), architekturos, konstrukcijLj, vandentieklo ir nuotekLj!ialinimo, !iilumos gamybos (iki 120 MW vienetines galios) ir tiekimo, !iildymo, vedinimo ir oro kondicionavimo,dujotiekio, elektrotechnikos (iki 10 kV jtampos), elektroniniLj rysiLj (telekomunikacijLj), apsaugines signalizacijos,

gaisrines signalizacijos, proceSLjvaldymo ir automatizacijos, aplinkos apsaugos, pasirengimo statybai ir statybos darbLjorganizavimo, statybos skaiciuojamosios kainos nustatymo, ekonomine, gaisrines saugos.

Statybos darbLj sritys: zemes darbai, statybiniLj konstrukcijLj statyba ir montavimas, hidroizoliacija, apdailos darbai;statinio vandentiekio ir nuotekLj salinimo inzineriniLj sistemLj jrengimas, !iilumos gamybos jrenginiLj (iki 500 MW

galios) montavimas, silumos tiekimo tinklLj tiesimas, statinio sildymo, vedinimo ir oro kondicionavimo inzinerini4sistemLj jrengimas, dujLj tinklLj (iki 1,6 MPa slegio) tiesimas, statinio dujLj inzineriniLj sistemLj jrengimas, statinio

inzineriniLj sistemLj ir inzineriniLj tinklLj paleidimo ir derinimo darbai; statinio elektros inzineriniLj sistemq jrengimas,statinio nuotolinio rysio (telekomunikacijLj) inzineriniLj sistemLj jrengimas, statinio apsaugines signalizacijos jrengimas,

gaisrines saugos inzineriniLj sistemLj jrengimas (gaisrine signalizacija), procesLj valdymo ir automatizavlmo sistem4jrengimas, statinio inzineriniLj sistemq paleidimo ir derinimo darbai.

Atestatas galioja iki 2015 m. vasario 26 d.

Atestavimo komisijos 2011 m. rugsejo 16 d. protokolas. r. IA-200

2008 UAB oGRAFIJAo 00708

JSC “ENERSTENA” DESIGNS, INSTALLS, MANUFACTURES AND CONSTRUCTS

BIOFUEL BOILER-HOUSES OF VARIOUS SIZES WHICH ARE HEATED WITH BIOFUEL

4

BOILERFURNACEECONOMISERFUEL SUPPLy SySTEM: Moving floor Fuel turner Conveyor Dosing-supplying mechanismsASH REMOVAL SySTEM: Ash conveyor Ash hopperSMOkE CLEANING SySTEM: Multicyclone

HOT WATER BOILERSBoilers’ output from 1 MW to 12 MW.

STEAM BOILERSBoilers’ capacity from 1 t/h to 25 t/h.

5

The construction of equipment of biofuel boiler-houses designed, manufactured and constructed in JSC “Enerstena” meets the requirements of regulations and standards of the Republic of Lithuania and European Union.

Fully installed equipment encompasses: equipment of fuel storage, transportation and supplying to the furnace, equipment of furnace and boiler, and ash removal container, also removal system of combustion products, including condensing economizers up to the top of the shaft (chimney).

System of biofuel boiler-houses is fully automated; equipment runs at fully automated regime without con-stant operator’s supervision. Automated control system (SCADA) is installed in the biofuel boiler-houses, which facilitates the exploitation of the whole biofuel boiler-house, allows monitoring of condition of the boiler-houses, generating reports on break-downs.Fuel supply from he storage to the furnace and ash removal is fully automated thus manual operations are not required.

6

BIOFUEL BOILER-HOUSES UP TO 2 MW

In biofuel boiler-houses, up to 2 MW, designed and constructed in JSC “Enerstena”, biofuel boiler is horizontal, integrated together with a furnace. Boiler-house may be installed in small premises, is easily transportable thus installation time of this boiler-house is shorter.

The boiler-house is heated with wooden waste, cuttings, shingles, firewood, barks, small branches, sawdust and granules. Equipment of the boiler-houses is intended for heating with both dry and damp, up to 55% humidity, fuel.

7

BIOFUEL BOILER-HOUSES OVER 2 MW

Output of biofuel boiler-houses, designed and constructed in JSC “Enerstena”, at nominal load, without emergency downtimes, is not less than 8000 hours*/year.Main equipment of heating production of biofuel boiler-houses, over 2 MW, are hot water boilers heated with biofuel, complemented with a furnace of oblique moving grate. Type of the boilers – vertical, three-course smoke-tube. Capacity of the being installed hot water boiler is adjusted according to the assigned temperature of water running out of the boiler.Biofuel boiler-houses and their additional equipment (boilers, furnaces, and economizer) are produced according to standards, technical regulations and directives of the European Union.

* may vary according to condition of exploitation.

8

Biofuel boilers up to 2 MW, designed and constructed in JSC “Enerstena” are horizontal, of smoke-tube type, fully pressurized, working without air suction. Useful running coefficient of assemblies of the boilers is not smaller than 85 % when heating with biofuel, when running at maximum load, when temperature of the going out smoke outside of the boiler is not bigger than 180 0C, and temperature of water running out of the boiler up to 110 0C. Layer of thermo isolation of the boilers ensures temperature of boilers’ external surface not higher than 45 0C.The boilers have high coefficient of useful running 85-90 %. Smoke courses in the boilers are made of seamless pipes. Boilers are integrated together with a furnace thus they are easily transportable**; also installation time of boiler-houses is shorter.

** easily transportable boilers up to 2 MW.

BIOFUEL BOILERS UP TO 2 MW

* Parameters of the boiler may vary according to technical data required by a Client.

TECHNICAL DATA OF THE BOILER:

Boiler’s power from 1 to 2 MW

Purpose of the boiler Water heating

Mounting position Horizontal

Operation parameters:

medium group 2 (water)

design pressure up to 10 bars

maximum allowed water temperature TS up to 110 °C

minimum allowed water temperature at the entrance of the boiler from 70 °C

Types of fuel biofuel

Fuel humidity 55 %

9

Hot water boilers of three courses, over 2 MW, designed and manufactured in JSC “Enerstena” are in-tended for production of thermal energy and hot water from biomass. Purpose of the boiler is production of hot water for heating system. In respect of smoke side the boiler is of three courses, out of which first course is fire tube, second and third courses are tube fibres. The boiler is complemented with all neces-sary equipment of automation. Pumps, valves and other electrified mechanisms are complemented with the boiler and controlled out of control closet of the boiler.

BIOFUEL BOILERS OVER 2 MW

* Parameters of the boiler may vary according to technical data required by a Client.

TECHNICAL DATA OF THE BOILER:

Boiler’s power from 2 to 12 MW

Purpose of the boiler Water heating

Boiler’s type Flue, 3-courses

Mounting position Vertical

Operation parameters:

medium group 2 (water)

design pressure up to 16 bars

maximum allowed water temperature TS up to 150 °C

minimum allowed water temperature at the entrance of the boiler from 70 °C

Types of fuel biofuel

Fuel humidity 55 %

10

Furnaces in JSC “Enerstena” are designed by using the newest technologies. Biofuel heating furnace is of oblique, moving grate type, running at the principle of gas generation. Process of combustion in the furnace is controlled according to the level of oxygen in smokes. Fire-resistant masonry of the furnace is made of materials resistant to wear and heat.

In all sites necessary for exploitation, maintenance or repair of the furnace access door and hatches with covers are mounted, which are equipped in such way that they do not lose their shape at the length of time, also they are sealed with a gasket that is resistant to heat and acid and that ensures a total tightness of the furnace.

FURNACES

11

CONDENSING ECONOMIZERS FOR BIOFUEL BOILERS

In order to increase a quantity of biofuel in a balance of fuel and to use biofuel more effectively, for total power of biofuel boilers a condensing economizer is equipped, that utilizes the heat inside smokes, by cooling down them below the temperature of dew point (50-65 0C). Simulta-neously smokes going through condensing economizers are additionally cleaned from hard particles. With a help of condensing economizers, after having cooled down such, water containing smokes, below dew point, condensation-al heat is discharged. In such way in the economizer is received additional quantity 20-30 % of heat.

All parts of the condensing economizers which go in con-tact with smoke are made of steel AISI 316L. Condensing economizers designed and manufactured in JSC “Ener-stena” are distinguished by big coefficient of useful run-ning and by little resistance (smoke and water sides), what conditions little cost of electricity.

While condensing economiser is operating condensate in-evitably pollutes with smokes ashes. Thus, the condensate must be cleaned of mechanical additions before disposal by spilling to sewerage. All installations of the cleaning system are made of materials (stainless steel, polypropyl-ene, etc.) resistant to corrosive effects of condensate and chemical reagents.

The purpose of sediment drying is to separate sediment from water to the degree that sediment could be trans-ported as damp mass in future. There are several meth-ods of drainage, which can be chosen in consideration of requirements. We offer the following: drainage in strip filter and sediment collection in fine-fibre bags.

JSC “Enerstena” offers to its clients the condensing econ-omizers of their own production, as mechanisms for pro-duction of heat, also a totally complemented, automatically running and by especially little cost distinguished system.

* Boiler-houses’ capacity up to 50 MW.

12

Raktazoliu str. 21, LT-52181 Kaunas, Lithuania Tel.: +370 37 37 32 31; Fax: +370 37 45 90 56

info@enerstena.lt; www.enerstena.lt