efficiency on a large scale oil and gas fired water tube ...oil and gas fired water tube packaged...

Efficiency on a large scaleOil and Gas Fired Water Tube Packaged Boilers

Introduction to Bosch Thermotechnology

Bosch Thermotechnik GmbH is a leading supplier of resource-efficient heating products and hot water solutions in Europe. In fiscal 2013, the company generated sales of 3.1 billion Euros (68% outside Germany) and employed approximately 13,500 people. Bosch Thermotechnology has strong international and regional brands and manufactures a diversified product range in 21 plants in 11 European, North American and Asian countries. In 2013, Bosch Thermotechnology invested 129 million Euros in research and development. Intelligent networks and local systems for heating, ventilation, air-conditioning and electricity generation are fundamental technologies for the future building standard, which will generate more energy than is used.

As a pioneer enterprise in the global market, Bosch Thermotechnology provides boiler systems that are appropriate for use in various commercial and industrial applications. We have not only successfully provided high quality boiler system equipment and complete services to large and medium sized mining enterprises, we have also provided customized boiler system solutions to small enterprises, office buildings, and residential buildings.

In Southeast Asia, Bosch Thermotechnology has been established in the middle of 2011 to provide a closer support to its local customers as well as to further extend its market position. The regional headquarter office is based in Singapore, overseeing business development in the Southeast Asia region. Nowadays, Bosch Thermotechnology has successfully established its sales offices in Indonesia, Malaysia, Philippines, Singapore, Thailand, and Vietnam, with a representative office in Myanmar.

2 | SZS-Oil and Gas Fired Water Tube Package Boilers

National A-grade boiler manufacturing license

Pressure vessel D1- and D2-grade manufacturing license

ASME certification

Pressure vessel D2-grade design license

Boiler I-grade installation, alteration, and maintenance license

SZS-Oil and Gas Fired Water Tube Package Boilers | 3

Bosch SZS Series Fully Automatic Oil and Gas Fuel Boiler

The SZS series fully automatic oil and gas fuel boiler has been developed by Bosch on the foundation of cutting-edge technology. It is a new high-tech product that unifies mechanical, electrical, instrumentation, combustion, heat exchange, and control. This boiler is a double drum vertical D-type boiler with fast assembly water pipe structure and micro positive pressure in operation.

We have imported our leading German industrial boiler safety control system technology, which uses PLC and an independent interlocking protection system design as well as a touch screen and a man-machine operating interface that is smart and streamlined. Such features ensure high safety, high reliability, and fully automatic smart boiler control and operations.

SaferMore energy efficientMore environmentally friendlySmarter More aesthetically appealing

Bosch SZS ModelFully Automatic Oil and Gas Fuel Boiler

Highly Efficient Energy ConservationThe boilers are equipped with fully-automatic burners of renowned international brands safeguarding low emission combustion. With micro positive pressure during operation, the boiler has higher thermal efficiency and a low power consumption, resulting to lower operational costWith whole membrane wall structure, the furnace interior wall has low temperature and heat loss and good insulation, leading to high boiler thermal efficiencyThe rear section has a highly efficient economizer that further reduces flue gas temperature and increases boiler thermal efficiency

Safe and ReliableSteam boiler utilizes natural circulation and hot water boiler utilizes forced circulation, ensuring that water circulation is safe and reliableBoiler main frame has a whole membrane wall structure; combustion is safe, highly efficient, and well insulatedAnti-blast door utilizes micro positive pressure large diameter spring type; with good insulation, safe operation of the boiler is guaranteedAdvanced and complete control technology with high performance components ensures the safe and reliable operation of the boiler

Clean and Environmentally Friendly

Uses a wide range of high efficiency clean combustion technology.Uses low-nitrogen combustion technology to meet stricter emission standardsFurnace has a high-volume design that lowers combustion intensity and reduces the generation of pollutants such as NOx. This also benefits fuel reburning

Investment Savings

Compact boiler structure ensures that only a small area is needed for installation, hence creating savings in boiler room infrastructure, resulting in overall investment costsBoiler can be quickly installed or assembled for delivery, has a short installation cycle, and low installation costsBoiler utilizes micro-positive pressure operation results in higher combustion efficiency and lower power consumption, thus reducing operating costs

Advanced Fully Automatic Intelligent Control System

Using leading renowned control technology, ensures a highly reliable control system

Advanced mechanical and electrical integration, fully automatic boiler control technologyProgrammable logic control (PLC) technologyCascading control or centralized control technologyUses renowned control components with strong anti-interference properties, long life-span, and high reliability Three-element Boiler Water Level Control SystemMeets European standards: Super pressure steam controller self-diagnostic process technology


Our boiler systems are capable of perfectly matching your needs. Bes ides conser v ing natura l resources, this also works to conserve your financial resources.


Ensuring High Safety and High Reliability for Boiler

Imported Bosch Germany advanced independent safety control system. Malfunction protections relating to the combustion system, boiler water level, steam pressure, and temperature utilizes an independent interlocking protection system design. Even if the highly reliable PLC experiences a mechanical fault with a 0.0001% (one in a million) probability, and even when there is no one on duty, the independent safety control system still ensures the high safety and reliability of the boilerUses a German TÜV and CE certified advanced boiler water level safety regulator with self-monitoring capabilitiesUses a German TÜV and CE certified protection level IP65 steam pressure controllerAfter a malfunction occurs and before the malfunction can be completely corrected, software and hardware will take simultaneously protective actions, thereby completely halting human operator error or short-cuts to operational procedures

Fuel gas leak automatic detection process: Furnace pre-ventilates prior to ignition, automatic ignition, flame automatic monitoring, combustion malfunction alarm, and furnace ventilation after machine is stoppedAutomatic control of three feed water sources and automatic control of boiler load ensures a long-term stable output of high quality steamAutomatic detection, control, and protection of temperature, pressure, water level, flow rate, and oxygen contentPre-configuration of boiler start and stop times

Operation That is Truly Fully Automatic

Man-machine operating interface that is smart, intuitive, and simple

Malfunctions and Historical Records

Touch screens act as the boiler’s man-machine interfaceMenu display makes boiler control simple, systematic, and intelligentTouch screens can display boiler water level, pressure, temperature, combustion intensity, fan, and water pump operating status dynamically and in real time. This allows boiler operating status to be taken in at a glanceEach operating parameter can be freely set as needed on the touch screenMulti-window display and online help functionality in the operating process reminds operators of how to execute the next step

Automatic recording of time and cause of malfunctionsCumulative record of total number of ignitions as well as operating times of fan, water pump, and burnerAutomatic rendering of curves for pressure, temperature, and other parametersAutomatic recording of hot water/steam usage amounts, which provides the statistical basis for energy resource management


SZS Oil and Gas Fuel Steam Boiler Product Range Offerings

SZS Oil and Gas Fuel Hot Water Boiler Product Range Offerings

Rated Steam Pressure (MPa) 1.25 1.25 1.6 1.6 2.5 2.5 3.82

Nominal steam temperature/°C Saturation 250 Saturation 350 Saturation 400 450

Rated Steam Capacity [t/h]

4

6

8

10

15

20

25

30

35

45

Nominal water outlet pressure (gauge pressure) MPa 1.0 1.25 1.0 1.25 1.25 1.6

Nominal water outlet temperature / water inlet temperature / °C 95/70

95/70 95/70 115/70 115/70 130/70 150/90

Nominal thermal power MW

7.0

10.5

14.0

17.5

21

29

46

Description:

Products labeled with are primary recommendations. Users with special requirements can select corre-sponding products

labeled with .

Steam boiler designed efficiency range, depending on configuration of energy saving device, is: 91-99%.

Hot water boiler designed efficiency range, depending on configuration of energy saving device, is: 92-95%.

Steam boilers are all configured with energy saving devices that come in 3 models: B-type (basic model), E-type (economic

model), and S-type (strong model) boiler energy saving devices. Corresponding flue gas temperatures are 150°C, 90°C, and 55°C

respectively.

There are two possibilities regarding the hot water boiler energy saving device. No boiler energy saving device, which has a

corresponding flue gas temperature of150°C, and configuration with a boiler energy saving device, which has a corresponding flue

gas temperature of 100°C.

Boiler designed fuel includes: natural gas, town gas, liquefied petroleum gas, biogas, coke oven gas, mine gas, light oil, and heavy

oil.

SZS series boiler body is designed for dual use of fuel oil and gas, fuel oil, or fuel gas as the three kinds of fuel. The customer

should specify the designed fuel when ordering to facilitate selection of appropriate burners and other auxiliary equipment.

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3

2

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5

6

7

Other capacities and pressures can be supplied on demand

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ModelSZS4-2.5-YQ

SZS6-2.5-YQ

SZS8-2.5-YQ

SZS10-1.6-YQ

SZS15-1.6-YQ

SZS20-1.6-YQ

SZS25-1.6-YQ

Project

Nominal steam volume t/h 4 6 8 10 15 20 25

Nominal steam pressure MPa 2.5 2.5 2.5 1.6 1.6 1.6 1.6

Nominal steam temperature °C 226 226 226 204 204 204 204

Feed water temperature °C 20/105 20/105 20/105 105 105 105 105

Boiler designed thermal efficiency % 100.3 100.7 100.9 101 101.1 101.2 101.2

Applicable fuel

Means of combustion

Flue gas temperature °C 55 55 55 55 55 55 55

Fuel consumption (natural gas) Nm3/h 263/303 394/454 524/605 652 977 1302 1626

Gas supply pressure (natural gas)

mbar10~30 10~30 10~30 10~30 30~50 30~50 30~50

Fuel oil consumption kg/h 222/256 332/383 442/510 550 824 1097 1371

Uses power source V/Hz 380/50

Equipment total power kW 24.5/26 26.5/28.7 41/45 37.5/41.5 56.5/60.5 78/82 106.5/114

Largest component transport weight t 18.5 20.5 23 24.5 28.5 32 40

Largest component transport

dimensions m

6x2.6

x3.0

6.4x2.8

x3.1

6.8x3.0

x3.2

7.2x3.1

x3.3

8x3.3

x3.5

8.7x3.5

x3.7

9.4x3.7

x3.8

Installation max external dimensions

m

8x4.1

x3.9

8.5x4.4

x4

9x4.7

x4.1

9.4x4.8

x4.2

10.3x5.3

x4.4

11.2x5.7

x4.6

11.9x6

x4.7

Appropriate sea level elevation m ≤800

Main steam valve diameter mm DN100 DN100 DN100 DN150 DN150 DN200 DN200

Safety valve diameter mm 2xDN50 2xDN50 2xDN80 2xDN80 2xDN80 2xDN100 2xDN100

Feed water pipe diameter mm DN40 DN40 DN50 DN50 DN80 DN80 DN80

Waste water pipe diameter mm DN40/50 DN40/50 DN40/50 DN40/50 DN40/50 DN40/50 DN40/50

Stack diameter mm Φ500 Φ600 Φ700 Φ800 Φ800 Φ1000 Φ1000

Description:

Boiler uses natural gas and light oil as its main designed fuels, while the use of town gas, liquefied petroleum gas, biogas, coke oven

gas, and mine gas is also appropriate. When the designed fuel is heavy oil, the designed boiler will be correspondingly bigger.

Standard calculation of fuel consumption is based on a natural gas lower heat value 36,006 KJ/Nm3 and a light oil lower heat value

of 42,705 kJ/kg.

The efficiency of the steam boiler in the table is calculated with a B-type steam boiler energy saving device. Using an E-type or

S-type energy saving device will further increase boiler efficiency.

Equipment total power shown in the table corresponds to fuel being natural gas/light oil, inclusive of blower and oil pump (light oil)

electronic equipment power.

We believe in continuous improvement of our products, and data for new generation products may differ. Parameters shown in the

table are for reference only.

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2

3

4

5

Natural gas/light oil

Forced ventilation, micro positive pressure combustion

Typical SZS Series Steam Boiler Technical Parameters Table

Description:




of 42,705 kJ/kg.

The efficiency of the steam boiler in the table is calculated with a B-type steam boiler energy saving device. Using an E-type or

S-type energy saving device will further increase boiler efficiency.



We believe in continuous improvement of our products and data for new generation products may differ. Parameters shown in the


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3

4

5

ModelSZS30-1.6-YQ

SZS35-1.6-YQ

SZS45-1.6-YQ

SZS20-2.5/400-

YQ

SZS25-2.5/400-

YQ

SZS30-2.5/400-

YQ

SZS35-3.82/450-

YQ

SZS45-3.82/450-

YQ

Project

Nominal steam volume t/h 30 35 45 20 25 30 35 45

Nominal steam pressure MPa 1.6 1.6 1.6 2.5 2.5 2.5 3.82 3.82

Nominal steam temperature °C 204 204 204 400 400 400 450 450

Feed water temperature °C 105 105 105 105 105 105 105 105

Boiler designed thermal

efficiency %101.2 101.3 101.3 101.2 101.2 101.2 101.3 101.3

Applicable fuel

Means of combustion

Flue gas temperature °C 55 55 55 55 55 55 55 55

Fuel consumption (natural gas)

Nm3/h 1951 2276 2924 1547 1933 2318 2796 3593

Gas supply pressure (natural

gas) mbar50~200 50~200 50~200 30~50 30~50 50~200 50~200 50~200

Fuel oil consumption kg/h 1644 1920 2466 1304 1630 1955 2357 3029


Equipment total power kW 137/148 137/140 189/192 127/131 131.5/139 167/170 222/225 266/269


weight t24 28.5 35 40 49 26.5 35.5 46


dimensions m

10.1x3.5

x3.5

11x3.5

x3.5

12.2x3.8

x3.8

9.2x3.5

x3.7

9.9x3.7

x3.8

10.6x3.5

x3.5

11x3.5

x3.5

12.2x3.8

x3.8

Installation max external

dimensions m

12.3x6.3

x5.2

13.2x6.6

x5.3

14.5x7

x5.7

11.7x5.7

x4.9

12.4x6

x5

12.8x6.3

x5.2

13.2x6.6

x5.3

14.5x7

x5.7

Appropriate sea level elevation

m≤800

Main steam valve diameter mm DN200 DN250 DN250 DN150 DN150 DN200 DN150 DN200

Safety valve diameter mm 2xDN125 2xDN150 2xDN150 2xDN801xDN80

+1xDN100

1xDN80

+1xDN1002xDN80

1xDN80

+1xDN100

Feed water pipe diameter mm DN80 DN100 DN100 DN80 DN80 DN80 DN100 DN100

Waste water pipe diameter mm DN40/50 DN40/50 DN40/50 DN40/50 DN40/50 DN40/50 DN40/50 DN40/50

Stack diameter mm Φ1100 Φ1200 Φ1400 Φ1000 Φ1000 Φ1100 Φ1200 Φ1400




Typical SZS Series Steam Boiler Technical Parameters Table


ModelQXS7-

1.25/115/70-YQ

QXS10.5-1.25/115/70-YQ

QXS14-1.25/115/70-YQ

QXS17.5-1.25/115/70-YQ

QXS21-1.25/130/70-YQ

QXS29-1.25/130/70-YQ

QXS46-1.6/150/70-YQ

Project

Nominal thermal power MW 7 10.5 14 17.5 21 29 46

Nominal steam pressure MPa 1.25 1.25 1.25 1.25 1.25 1.25 1.6

Nominal water outlet temperature °C 115 115 115 115 130 130 150

Nominal water inlet temperature °C 70 70 70 70 70 70 90

Boiler designed thermal efficiency % 94.6 94.7 94.8 94.8 94.8 94.9 95

Applicable fuel

Means of combustion

Flue gas temperature °C 100 100 100 100 100 100 100

Fuel consumption (natural gas)

Nm3/h 740 1108 1477 1845 2214 3055 4841

Gas supply pressure (natural gas)

mbar10~30 30~50 30~50 30~50 50~200 50~200 50~200

Fuel oil consumption kg/h 623 935 1246 1555 1867 2576 4082


Equipment total power kW 23/27 46/51 56/60 76/83.5 91/102 134/137 202/209.5


weight t25.2 28.1 32 40 35 46 9


dimensions m

7.2x3.1

x3.3

8x3.3

x3.5

8.7x3.5

x3.7

9.4x3.7

x3.8

9.8x3.5

x3.5

10.8x3.5

x3.5

11.5x1.3

x1.8

Installation max external dimensions

m

9.4x3.1

x5.2

10.3x3.3

x5.4

11.2x3.5

x5.6

11.9x3.7

x5.7

12.3x4.2

x6.3

13.3x4.5

x6.5

14.1x5.5

x6.9

Circulating water volume t/h 133 200 266 333 299 413 650

Appropriate sea level elevation m ≤800

Outlet/inlet water pipe diameter mm DN200 DN200 DN250 DN250 DN250 DN300 DN350

Safety valve diameter mm 2xDN80 2xDN100 2xDN100 2xDN125 2xDN125 2xDN1502xDN100

＋1xDN80

Waste water pipe diameter mm DN40/50 DN40/50 DN40/50 DN40/50 DN40/50 DN40/50 DN40/50

Stack diameter mm Φ800 Φ800 Φ1000 Φ1000 Φ1100 Φ1400 Φ1700

Description:




of 42,705 kJ/kg.

Hot water boiler efficiency in the table is calculated without the boiler energy saving device. Adding the energy saving device would

further increase boiler efficiency.



We believe in continuous improvement of our products and data for new generation products may differ. Parameters shown in the


1

2

3

4

5



Typical SZS Series Hot Water Boiler Technical Parameters Table

The flue gas exit of the SZS boiler still contains relatively high flue gas temperatures. After this flue gas undergoes economizer, it can pre-heat the boiler feed water while simultaneously lowering flue gas temperature, reducing boiler flue gas emission heat loss, and increasing boiler thermal efficiency by 3-7%. In doing this, it achieves the goals of energy savings, emissions reduction, and lowering consumption.

Standard configurations for Bosch boilers include the B-type (standard model) boiler energy saving device, with options available for E-type (economic model) and S-type (advanced model) energy saving devices. The corresponding flue gas temperatures are 150°C, 90°C, and 55°C respectively.

There are two standard configurations for Bosch’s hot water boilers: Without boiler energy saving device, which corresponds to a flue gas temperature of 150°C, and configuration with an energy saving device, which corresponds to a flue gas temperature of 100°C.

Aside from the economizer shown above, Bosch can also specially design boiler energy saving devices based on user fuel characteristics and user specific requirements.


Energy Saving Device Overview

Energy Saving Device Features

Advanced heat transfer technology – high quality heat exchange components, high efficiency heat transfer coefficient Reliable anti-corrosion measures – control of dew-point temperature using corrosion resistant alloy material High efficiency residual heat recovery – significantly lowering boiler flue gas temperature (Energy saving)Clear energy efficiency gains – reduces fuel consumption and lowers operating costs

For steam boilers and hot water boilers configured with various standard economizer, changes in the corresponding flue temperature and boiler thermal efficiency according to boiler load are shown in the bellow figure:

Boiler efficiency w/o energy saving device Boiler efficiency w/ B-type ener-gy saving device Boiler efficiency w/ E-type ener-gy saving device Boiler efficiency w/ S-type ener-gy saving device Boiler flue gas temperature w/o energy saving device Boiler flue gas temperature w/ B-type energy saving device Boiler flue gas temperature w/ E-type energy saving device Boiler flue gas temperature w/ S-type energy saving device

Legend:

Figure notes:Figure uses SZS10-1.6-QYboiler for example calculations

Boiler efficiency w/o energy saving deviceBoiler efficiency w/ energy saving de-viceFlue gas temperature w/o energy sav-ing deviceFlue gas temperature w/ energy sav-ing device

Legend:

Figure notes: Figure uses QXS7-1.25/115/70-QY boiler for example calculations

0

20

40

60

80

100

120

140

160

180

200

220

240

260

280

300

104

102

100

98

96

94

92

90

88

8630 40 50 60 70 80 90 100 110

Boiler load %

Boi

ler

effi

cien

cy (

%)

Boi

ler

flue

gas

tem

per

atur

e (o c

)

0

20

40

60

80

100

120

140

160

180

200

98

96

94

92

90

88

8630 40 50 60 70 80 90 100 110

Boiler load %

Boi

ler

effi

cien

cy (

%)

Boi

ler

flue

gas

tem

per

atur

e (o c

)


Always Standing-by: First Rate Service

Thanks to our carefully cultivated regional service network, we can guarantee the fastest possible reaction times. Besides maintenance service, service breakdown and repair, we also provide regular inspection support for systems. Should you be uncertain about whether or not your system is still at the cutting edge and whether or not it is still operating at high efficiency, we are also very happy to assist you. We will analyze your system, and if necessary, can also upgrade it.

During normal working hours, you can contact local customer service engineers directly with the specific contact information available on the cover of the switch cabinet of your boiler system. We are committed to providing service to individual clients, and contacting the local customer service engineer directly can save you a significant amount of valuable time.

We will provide professional, reasonable suggestions over the phone in response to your questions or arrange for customer service engineers to analyze the problem, thereby creating an optimal solution.

To obtain more information, please visit www.bosch-industrial.com; www.bosch-industrial-asean.com (from July 2014)

Service Motivates Action

Service breakdowns mean high costs. Do you need fast, professional assistance when they occur? When upgrading existing systems, do you need support? Bosch Thermotechnology will always be standing by to provide you with highly efficient, safe, and professional first class service.

Bosch Thermotechnology in Southeast Asia

Singapore, Cambodia, Lao PDR, MyanmarRobert Bosch (SEA) Pte. Ltd.Thermotechnology Division11 Bishan Street 21, #04-05Singapore 573943Tel +65 6258 5511 Fax +65 6571 2970Email: [email protected]

Indonesia (Jakarta): Indonesia (Surabaya) PT. Robert Bosch PT. Robert BoschArkadia Office Park Tower F Plaza BRI, Suite 1203 7th Floor, Suite 703-705 Jl. Jend. Basuki Rahmat No. 122Jl. TB. Simatupang Kav.88, Surabaya 60271Jakarta 12520 IndonesiaIndonesia Tel: + 62 31 5356262Tel: +62 21 3005 5800 Fax : +62 31 5356266Fax: +62 213005 5801 Email: [email protected]: [email protected] Malaysia:Robert Bosch Sdn. BhdThermotechnology DivisionNo. 8A, Jalan 13/6,46200 Petaling Jaya, Selangor,MalaysiaTel. + 60 (3) 7966 3000Fax + 60 (3) 7958 8833Email: [email protected]

Myanmar:Representative Office of Robert Bosch (SEA) Pte. Ltd.Thermotechnology DivisionNo. 60B, Kabar Ayer Pagoda RoadMayangone TownshipYangon, MyanmarTel. + 95 1 663616Fax + 95 1 663616Email: [email protected]

Philippines:Robert Bosch Inc.Thermotechnology Division28 Floor, Fort Legend Tower3rd Ave. Cor 31st StFort Bonifacio Global CityMetro Manila 1634PhilippinesTel. +63 2 870 3888 Fax +63 2 870 3830 Email: [email protected]

Thailand:Robert Bosch LimitedThermotechnology Division287 Liberty Square Building, 11th floorSilom Road, BangrakBangkok 10500ThailandTel. + 66 2 639 3111Fax + 66 2 238 4783Email: [email protected]

Vietnam (Ho Chi Minh): Vietnam (Hanoi): Robert Bosch Vietnam Co., Ltd. Robert Bosch Vietnam Co., Ltd.Thermotechnology Division Thermotechnology Division194 Golden Building Unit 03C, 2nd floor, International Center473 Dien Bien Phu str. – W.25 – 17 Ngo Quyen St., Hoan Kiem Dist.,Binh Thanh Dist. - Ho Chi Minh City Ha NoiVietnam VietnamTel +84 (8) 6258 3690 Tel +84 (4) 3939 3119Fax +84 (8) 6258 3692 Fax +84 (4) 3936 2899Email: [email protected] Email: [email protected] For more information:www.bosch-industrial.comwww.bosch-industrial-asean.com (from July 2014)

efficiency on a large scale oil and gas fired water tube ...oil and gas fired water tube packaged...

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