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1. Boiler should be double drum, single-layer layout, compact structure, heating surface 10% more than
similar products, with sufficient production, safe and reliable operation, the advantages of simple cons-
truction, the installation of low cost. The boiler is a natural circulation steam boiler, the water supply
enters the upper drum by the economizer, enters the lower drum from the convection tube bundle, nat-
urally circulates between the upper and lower drums, enters the water pipe wall by the falling pipe arra-
nged on the upper and lower drums , In the water wall of the endothermic evaporation, water and steam
mixture into the upper drum, by the internal equipment of the drum on the steam separation of qualified
steam through the main steam pipe discharge boiler.
Low pressure Double steam Boiler Low pressure Double steam Boiler Low pressure Double steam Boiler Double steam Boiler

Low pressure Double steam Boiler Low pressure Double steam Boiler Low pressure Double steam Boiler Double steam Boiler
2. The design of the whirlwind re-combustion chamber in the furnace results in the reduction of dust in the
flue gas and the further burning of the blazing carbon black particles to improve the thermal efficiency of
the boiler and reduce the blackness of the gas. As a result, the gas emission concentration should meet
the environmental requirements of Grade A.
r3. grate with a small roller structure, border grille and other technical patents, improve the operation of the
boiler reliability.
4. The use of sealed wind chamber and two-way grate air registration machine technology patents, the use
of processing taper seal structure to adjust air conditioning equipment to improve the sensitivity of the
grate.
Low pressure Double steam Boiler Low pressure Double steam Boiler Low pressure Double steam Boiler Double steam Boiler

Low pressure biomass steam boiler Low pressure biomass steam boiler biomass steam boiler Low pressure biomass steam boiler
Other models of boiler parameters:
| Type | Rated evaporation
| Rated steam pressur
| Rated steam temperature
| Feed water temperature
| Design Thermal Efficienc
| Boiler Dimensions (L × W × H) |
| Unit | T/h | Mpa | ° C | ° C | % | mm |
| boiler SZL10 | 10 | 1.25/1.6/2.5 | 194/204/224 | 104 | ≥80 | 8830X3180X5730 |
| boiler SZL20 | 20 | 1.25/1.6/2.5 | 194/204/224 | 104 | ≥80 | 12800X5500X8020 |
| boiler SZL25 | 25 | 1.25/1.6/2.5 | 194/204/224 | 104 | ≥80 | 12800X6000X8420 |
| boiler SZL30 | 30 | 1.25/1.6/2.5 | 194/204/224 | 104 | ≥80 | 13000X7100X9500 |
| boiler SZL35 | 35 | 1.25/1.6/2.5 | 194/204/224 | 104 | ≥80 | 13000X7600X9800 |
Low pressure biomass steam boiler Low pressure biomass steam boiler biomass steam boiler Low pressure biomass steam boiler
1.Henan kaifeng Swet (original name Desheng) Boiler Co.Ltd was established in 1954 ,We have contin-
ued to provide customers with more than 60 years of quality service, known as the king of China's boiler.
2.It's the national designated A-class boiler and D1,D2 class pressure vessel manufacturing key enterpri-
ses and has passed ISO9001 international quality management certification system certification.It holds
level 1 boiler installation permit. National special equipment manufacturing license ,National special
equipment installation remould maintenance permits and so on.
3. In 1979 the world's first circulating fluidized bed boiler developed by the Austrian company in Finland,
In 1987 China's first circulating fluidized bed boiler was born in our factory.In 2016 In order to meet
current emissions and reduce energy consumption requirements, our company launched efficient low-
emission energy-saving circulating fluidized bed boiler, has been identified by the national institute of
special equipment .
4.Our main products including circular flow bed (CFB)boiler ,gas boiler,coal boiler,biomass boiler,oil
boiler,power plant boiler , energy-saving boiler,solider waste boiler, high-efficiency boiler,electric hot
water boiler, high-pressure boiler,fully automatic control boiler,wood chip biomass steam boiler,chain
grate boiler,condensing boiler ,natural gas steam boiler ,water tube boiler,fire tube boiler,full artificial
intelligence boiler, biomass steam generator,refractory materials,boiler accessories and so on.
5.Company currently own three registered national patents, 29 certificate of national new products and all
kinds of honors. Also we are qualified as high and new technology enterprise of henan province, and te-
chnical support unit of "National Science and Technology Achievements", External CFB boiler.
6.Company acquired 3 National Patents; 9 provincial awards;14 city-level scientific achievement award.
Service purposes:
1. Focus on customers, the pursuit of excellence, and customers to progress together;
2. Customer demand is our eternal pursuit;
3. Sell a boiler, build a demonstration project, pay a friend, open up a market is my company's business
philosophy.
Please contact us if requested
TEL :+86 15890309953
FACEBOOK:+86 15890309953
WECHAT :15890309953
QQ :2442156541

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