Boiler Two Pipe Boiler

water pipe in boiler Coal Fired Thermal oil BoilerCoal fire water tube boiler(DZL series) -- ZBG Boiler. 2019-8-15 · ZBG dzl series chain grate coal-fired boi


  • Production capacity: 0.5-10t/h
  • Work pressure: 0.7-2.5 MPA
  • Applicable fuel: Biomass particles
  • Applicable industry: Heating, Chemical, Food, Tobacco, Textile, Printing and dyeing, Feed, Medicine, Building material, Wine, Rubber, Hospital

Product introduction

  DZL series package boiler is a horizontal three-pass water and fire pipe chain grate boiler, which uses medium-sized bituminous coal. The boiler body is vertical single drum, and the threaded pyrotechnic tube is arranged in the drum to form a convection heating surface, and the drum and the water walls on both sides constitute a radiation heating surface of the furnace. The combustion equipment uses light chain grate, the whole package is finished in the factory. The electric control makes the governor stepless speed regulation, the limit parameter alarm and the interlock protection.

Quick inquiry:
I need the quotation of , the fuel is , this capacity is , the pressure is , use for . My Name is , my Email is , my phone number is , Please Send the detail information for me!

CNC manufacturing technology:

  The key processing technologies such as steel plate blanking, circling, drum and tube plate drilling adopt advanced numerical control processing to reduce the assembly stress and prolong the service life of the boiler.

  Steel pipe cutting, thread pipe pressing and convection pipe processing all adopt advanced numerical control technology.

  The use of arched tube sheets and threaded fire tube was first adopted in China to increase heat transfer and completely solve the problem of cracking of the rear tube sheet.

  The layout of chain grate is neat and beautiful, result in front and rear smoke box panel using CNC plasma cutting machine.

Advanced welding process

  The vertical and circumferential seam welding of the boiler adopts advanced automatic submerged arc welding technology to ensure the welding quality. All vertical and circumferential welds are subjected to 100% ray detection.

  The welding of smoke pipe and the tube plate adopts pre-expansion to eliminate the gap between the tube and tube plate, then be welded by automatic argon arc. Which effectively eliminate stress and prolong boiler life.

  The flange of the socket is welded by robots.

  The chain grate is manufactured by our factory, and it is tested for 72 hours before leaving the factory to ensure that the tightness is moderate and won’t go wrong.

Precision parts processing

  Advanced manufacturing technology, using assembly line automatic spinning operation.

  Enhance heat transfer and raise boiler thermal efficiency.

  Threaded fire pipes are highly efficient heat transfer elements for many years of research by our company. After continuous optimization, the heat transfer coefficient is 1.8 times higher than that of conventional fire pipes when the selection of thread groove depth and pitch.

Unique structural design

  Disturbed flue gas to ensure complete combustion of volatiles.

  The air volume accounts for about 30% of the total, and the wind speed is about 50m³.

  The independent secondary draft fan makes it easy to control and adjust the wind volume and pressure.

  The high-temperature smoke generated by the combustion first enters the eight-character flue on both sides of the body from the tail (in this case, the water pipe type), and the flue gas flows outside the pipe.

  The flue gas cooled by the eight-character flue then enters the threaded tube (in this case the fire tube type) arranged in the drum from the front smoke box.

  The flue gas will be exhausted from the rear smoke box finally, this design fundamentally solves the problem of cracking of the tube sheet of a pure fire tube boiler.

Abundant auxiliary configuration

  Sow feeder: sow feeder feed fuel equally to avoid flashback

  Speed control gear: design reasonable rotating speed according to the combustion speed of biomass to make sure the fuel burning out.

  Panels: cold-rolled embossed and concave-convex panels, strong and elegant.

  Inspection door: reasonable manhole and hand hole layout, easy to maintenance. Furnaces are equipped with access doors for easy access and maintenance.

Model Rated thermal power(t/h/MW) Rated working pressure(MPa) Steam temperature/Rated output water temperature(℃) Thermal efficiency(%)
DZL1-0.7-AⅡ 1/0.7 0.7 170 79
DZL1-1.0-M 1/0.7 1.0 184 79
DZL2-1.0-M 2/1.4 1.0 184 79
DZL2-1.25-M 2/1.4 1.25 194 79
DZL2-1.57-M 2/1.4 1.57 204 79
DZL2-2.45-M 2/1.4 2.45 225 79
DZL4-1.25-M 4/2.8 1.25 194 79
DZL4-1.57-M 4/2.8 1.57 204 79
DZL4-2.45-M 4/2.8 2.45 225 79
DZL6-1.25-M 6/4.2 1.25 194 79
DZL6-1.60-M 6/4.2 1.6 204 79
DZL10-1.25-M 10/7 1.25 194 79
DZL10-1.60-M 10/7 1.6 205 79
DZL15-1.25-M 15/10.5 1.25 194


DZL15-1.60-M 15/10.5 1.6 205


DZL20-1.25-M 20/14 1.25 194


DZL20-1.60-M 20/14 1.6 205



  • water pipe in boiler Coal Fired Thermal oil Boiler

    Coal fire water tube boiler(DZL series) -- ZBG Boiler. 2019-8-15 · ZBG dzl series chain grate coal-fired boiler is a fast-assembly water-fire tube boiler with two-wing flue technology as the core, has the advantages of compact structure, reliable operation, small volume, large output, fast boost and high thermal efficiency.

    Get a Quote
  • meter to boiler pipe size |

    2019-6-4 · Hi, In the near future would like to change standard boiler for either same or combi, meter is at one corner of house and boiler diagonally opposite, pipe starts at 22mm from meter but ends up 15mm at boiler, concrete floors so assuming pipe goes up to and into 1st floor cavity and accross approx 45'.

    Get a Quote
  • Steel pipe for water-cooled wall of boiler

    Steel pipe for water-cooled wall of boiler. In the manufacturing of packaged boilers,rows of tubes are placed on the vertical walls of the boiler box, and the box is welded shut.This is one type of tubing arrangement on the front wall of a water-cooled boiler.

    Get a Quote
  • Size Boiler Feed - MathWizard™ - Shipco® Pumps

    For boiler feed pumps running ON/OFF, the pumps are controlled by a boiler level controller. The receiver size on boiler feed units is typically based on the total system load of all boilers fed by the boiler feed unit with 20 minutes GROSS storage. The size of boiler feed receivers are expressed in gross gallons.

    Get a Quote

    2011-3-17 · BOILER (OWB) PIPE Outdoor wood boiler (OWB) insulated RAUPEX pipe is specially designed for the efficient transfer of hot water from outdoor wood boilers to residential and light commercial buildings. A flexible alternative to rigid pipe, OWB pipe offers ease of installation combined with the long-term performance of REHAU's RAUPEX ® O 2

    Get a Quote

    2014-7-21 · 2. Boiler circulator(s) must be rated for open loop applications. Do not use cast-iron circulators. 3. Boiler circulator(s) operate continuously. 4. The minimum pipe size for connecting to a water storage tank is 1 ½". 5. The minimum pipe size for connecting the boiler is 1 ½" for the Mod Con 300 VWH and 2" for the 500 and 850 models. 6.

    Get a Quote
  • Jiangsu Chang bao Steel Tube Co., Ltd.-Oil Country

    Jiangsu Chang bao Steel Tube Co., Ltd. is a specialized in the production of pipes of various energy Manufacturer, is one of the largest manufacturer in boiler tube and OCTG industry and the excellent provider for the best 3 boilers mill in China, is the world's leading in small diameter alloy boiler tubes manufacturers, Is the first one of the enterprises specialized production manufacturer

    Get a Quote
  • Two pipe steam system, boiler flooding — Heating

    I am dealing with a two pipe steam system. half of the radiators have thermostatic steam traps and other half are gravity. There is a condensate tank next to boiler with a 2" F&T trap. M/M #150 controller on boiler works with condensate pump and there are no coils in boiler. Boiler provides heat only. Everyday the boiler is flooding.

    Get a Quote
  • Boiler Pressure and Central Heating System Pressure -

    Where to check your boiler pressure or central heating system pressure. What pressure changes are normal. What to do if the central heating boiler pressure is too high or too low or if it swings between high and low. Safety pipe dripping outside? We'll show you why, and how to sort it out.

    Get a Quote
  • Combi Boiler and one-pipe system | Screwfix

    2005-10-11 · Also, it is my experience that one pipe systems clog-up with deposits much more than a two pipe system and even though a powerflush is always recomended to clear it out before fitting a modern combi boiler with miniscule sized waterways, the black sludge we

    Get a Quote
  • Fire-tube boiler - Wikipedia

    2019-10-9 · A fire-tube boiler is a type of boiler in which hot gases pass from a fire through one or (many) more tubes running through a sealed container of water. The heat of the gases is transferred through the walls of the tubes by thermal conduction, heating the water and ultimately creating steam. The fire-tube boiler developed as the third of the

    Get a Quote
  • Boiler pipe pipe section Manufacturers & Suppliers,

    boiler pipe pipe section manufacturer/supplier, China boiler pipe pipe section manufacturer & factory list, find qualified Chinese boiler pipe pipe section manufacturers, suppliers, factories, exporters & wholesalers quickly on, page 2

    Get a Quote
  • Does a combi boiler need a bigger gas pipe than

    Does a combi boiler need a bigger gas pipe than boiler with large water tank? One has said that the pipe coming from the gas meter is a 22mm and the pipe going into the boiler is only 15mm so the 15mm section needs to be replaced which involves pulling all my carpets and floors up to find the join. Ask the installer who stated the

    Get a Quote
  • Boiler tube quality problems - Alloy Pipe, Seamless

    Boiler tube quality problems mainly in the cracks, shrinkage, peeling, pit, layered, pinhole, slag and so on. Boiler tube defects and injuries that may exist in the same smelting and rolling process. The main defects in the surface of the boiler tube and an outer surface than the inner surface.

    Get a Quote
  • Fire-tube boiler - Wikipedia

    2019-10-9 · A fire-tube boiler is a type of boiler in which hot gases pass from a fire through one or (many) more tubes running through a sealed container of water. The heat of the gases is transferred through the walls of the tubes by thermal conduction, heating the water and ultimately creating steam. The fire-tube boiler developed as the third of the

    Get a Quote
  • In a two pipe system condensate is normally returned

    In a two pipe system condensate is normally returned to the boiler To keep the steam in the system and allow the cooler condensate to return to the boiler to be reheated and start the cycle

    Get a Quote
  • Combi-Boiler Downloads | Navien

    Navien condensing tankless water heaters & boilers for residential and light commercial applications use innovative high efficiency technology to provide a comfortable environment. NFC Combi-boiler CI System With Monoflow Piping NFC Combi-boiler CI System With Two Pipe Direct Return Piping NFC Combi-boiler CI System With Two Pipe Direct

    Get a Quote
  • Connecting Wood Boiler To Oil Boiler |

    2013-1-13 · The directions (posted below) instruct me to run a pipe from the oil boiler return to the wood boiler return and then run another pipe from the wood boiler supply to the oil boiler supply. This should create a constant loop between the two boilers keeping the oil boiler hot for the three heating zones plus the domestic hot water.

    Get a Quote
  • Boiler Condensate Outlet Pipe siting? | DIYnot Forums

    2009-4-17 · I guess this takes the gas main from the cellar to the new boiler upstairs. There is also a white plastic condensate pipe that runs vertically down the same wall and stops about an inch or two from the ground. When we recently had some workmen in, they said that it was illegal not to have your condensate pipe terminating in a drain?

    Get a Quote
  • Boiler pipe sizing | Page 2 | Screwfix Community Forum

    2008-8-6 · This may mean the flow and return pipe needs to be 28mm and yet a boiler has only 22mm connections. The <u>pipes</u>, must be sized to deliver the maximum heat the boiler can produce, 22mm connections or not. Having 22mm flow and return pipes at the boiler may mean the boiler's maximum capacity cannot be delivered.

    Get a Quote