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Quick Details

  • Condition: New
  • Type: Natural Circulation
  • Usage: Industrial
  • Structure: Water Tube
  • Pressure: 1.0Mpa
  • Style: Single drum longitudinal type chain grate boiler
  • Fuel: Anthracite class II, biomass fuel
  • Place of Origin: Henan, China (Mainland)
  • Brand Name: SWET(Desheng)
  • Model Number: DZL7-1.0/95/70-AII
  • Output: Hot Water
  • Dimension(L*W*H): 10900X5500X6400mm
  • Weight: 1-20 T
  • Certification: ISO9001
  • After-sales Service Provided: Engineers available to service machinery overseas
  • Product name: High combustion efficiency environmental protection Boiler
  • Keywords: 7MW Boiler
  • Design fuel: Anthracite class II, biomass fuel
  • Warranty: 12 Months
  • Thermal efficiency: 79.6%
  • Rated thermal power: 7MW
  • Rated circulating water: 240m3/h
  • Exhaust gas temperature: 160℃
  • Water capacity of the boiler: 14.3m3
  • Rated effluent pressure: 1.0Mpa

Packaging & Delivery

Packaging Details Boiler has a standard export package wood box, U-steel, steel frame reach to sea transportation requirement.
Delivery Time Within 30-45 workdays after payment
Product Description

   Coal Hot Water 7MW Boiler

   Coal Hot Water 7MW Boiler  has a compact structure, The furnace wall light ,light weight

beautiful appearance,high strength,grate thick,long life and other advantages.Long steaming

cycle, complete specifications, can achieve different thermal environment,

Is an advantage such as  steam boiler safe and reliable operation, better steam  boilers,

energy saving,environmental protection, low water quality  requirements, air distribution,

characteristics of reasonable, flexible adjustment Can be adjusted according to the actual

situation.Combustion conditions,mechanical operation,low laborIntensity, reasonable,

structure, strong power, It  has the following   advantages: high degree of automation,

high thermal efficiency, equipped with dust removal equipment  to reduce  environmental

pollution.verticalCoal-fired energy-saving steam boilerDZL4t,DZL8t,DZL10t,  widely used

in hospitals, universities,  hotels, supermarkets,garment factories paper  mills,food

processing  plants  and  so on. Industrial  and  mining enterprises,  organs, schools

and occupational services.








  Coal Hot Water 7MW Boiler is small in size big in output power rapid in pres-sure rise

and higher in heatefficiency This is the first domestic production natural circulation boiler

is a national mechanical and electrical energy saving product with national patent High

heat steam boiler.The arched  tube plate and  the thread  smoke tube boiler drum, the

drum is composed of steel into a quasielastic structure, canceled braces tube plate 

area, reduce the stress in steel tube plate. By two return to return, to Solve the problem

of  tube plate crack Natural Circulation Coal Fired High Heat Steam BoilerIndependent

adjustment wind chamber under the fire grate, and wind comes from sides sides.

Ventilated section ratio reaches 100%,and can be adjusted flexibly and air flows evenly.







Technical Data



Coal Hot Water 7MW Boiler
TypeRated evaporationWorking pressureSteam temperatureReturn water temperatureThermal efficiencyDimension
unitt/hMpa%mm(L x W x H)
Fast  assembly DZL220.7/1.0/1.25170/184/19420≥807650X3500X4400
Fast  assembly DZL440.7/1.0/1.25170/184/19420≥809380X4430X4800
Assembly DZL680.7/1.0/1.25170/184/19420≥809790X4670X5500
Assembly DZL10100.7/1.0/1.25170/184/19420≥8010900X5500X6400
Assembly DZL15151.0/1.25/1.6184/194/204104≥8014000X4174X6145



Anthracite class II ,biomass fuel


1. Because the biomass pellet fuel without parathion, does not produce sulfur

    dioxide and P2O5 combustion thus it will not lead to acid rain, won't pollute

    the atmosphere and environment.

2.The biomass pellet fuel is clean, sanitary, convenient for feeding, reducing

    the labor intensity of workers,greatly improving the labor environment, and

    enterprises will reduce the cost of labor.

3.After the biomass pellet fuel burns, the ash ballast is very few, greatly reduces

   the place where piles up The coal ballast, reduces the mucking expense.

4. Biomass fuel ash, whcih is recyclable,after combustion is high grade quality organic potash.

Company information


 Henan kaifeng Swet (original name Desheng) Boiler Co.Ltd was established in 1954 ,

we have continued to provide  customers  with  more than 60  years of  quality  service,

known as the king of China's boiler.Tt’s the national designated A-class boilers and D1

D2 class  pressure  vessel  manufacturing key  enterprises 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.In1979 the world's

firstcirculating fluidized bed boiler developed by the Austrian company in Finland,In1987

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 

   Our main products including  circular  flow bed (CFB)boiler, gas boiler, coal  boiler,

biomass boiler,oilboiler 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;

boilerbiomass steam generator, refractory  materials,  boiler  accessories and so on.



Companies to install and maintain as a production and then continue to become the industry's

well-known professional installers, professional maintenance, the  company has an installation

qualification, 17 installation project  department,  more than  400 people install the team. Is the

largest in the country.

   The company has been specializing in the design, development, manufacture, installation and

after-sales service  of  industrial boilers,  and has formed a quality  service system that has been

pre-sold,  sold  and  sold.  And the establishment  of  a  sound service consulting system to strict

management to ensure product quality, quality service to win the user's satisfaction




Some of our domestic customers:
China Petroleum Pipeline Materials and Equipment Corporation.
China Petroleum & Chemical Corporation.
China Aero Engine Group.
COFCO Group Limited.
Weida Paper Co., Ltd.


Packaging & Shipping








Q1.  What products do we manufacture?

   1.  Circulating fluidized bed boiler

   2.  Desulfurization and denitrification series

   3.  Oil.gas-fired boiler (WNS&SZS series)

   4.  Coal-fired chain-grate boiler (DZL&SZL series)

   5.  Dust bag series

   6.  Biomass   boiler

   7.  Thermal oil boiler

   8.  Waste heat boiler

   9.  Automatic steam autoclave

10. Circulating fluidized bed boiler

11. Desulfurization and denitrification series

      And so on…

Q2. Why choose our boilers:

   1.Strict quality control system From the material finished boiler 

      shipment from project establishment drawing design to final audit. 

   2.Economically priced,exquisitely made. Experienced  responsible  

   3.Each boiler system part is from first class brand all over the world or China.

   4.We are the stable and long term supplier of many top companies in China. 

   5.We have export our boiler to Africa, America, Europe and so on.


Client Access




If you want to know more about your ideal porducts, welcome to contact us at any time!Energy saving and environmental protection chain grate boiler


Email:t-501549703625 foxmail.com 






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