DZL boiler adopting threaded fire tubes, single water drum, horizontal shell type boiler with 3 fire-passes structure, water-tube fire-tube mix design. The combustion traveling chain grate can feed the fuels automatically, with different rolling speed can adapt different fuels’ burning speed. Also, the small flakes chain grate can reduce fuel leakage, and also let the broken chain grate flakes is convenience of replace.

Yuanda promises the top quality of every set machine and best after-sales service as followings :
Service Criteria:
First,solve the problem, finally determine responsibility.
Service Policy:
1. Three all : all the process, all-round, all-weather service
2. Two fast: fast in place,trouble shooting quickly
3. Make sure:be compliant to customer satisfaction
Boiler body warranty for 24 months, auxiliary warranty for 12 months
Provide life-long maintenance, maintenance services

Safe Operation
DZH series is equipped with automatic water-level control, automatic pressure control, automatic interlock chain stop protection, free settable working pressure, visible system’s working states on screen.

Better fuel adaptability
Comparing with DZL boiler, DZH boiler has better adaptability on fuels, it can fire coal, rice husk, nut shell, sawdust, waste wood pieces, also can fire wood logs, straws. But, DZH boiler can only support manual fuel feeding, and manual ash remove.

High quality control
In manufacturing processes, we has adopting steel strength test, automatic steel cutting/ plate rolling/ welding, 100% x-ray welding check, magnetic particle check c-scan ultrasonography check, fluorescent penetrating check, hydraulic (water) pressure test, boiler thermal efficiency test,etc, to make sure all finished products is qualified.

DZH boiler adopting threaded fire tubes, single water drum, horizontal shell type boiler with 3 fire-passes structure, water-tube fire-tube mix design. Most important, the combustion fixed chain grate can also suit any kind of biomass. The small flakes chain grate can reduce fuel leakage, and also let the broken chain grate flakes is convenience of replace.

DZH coal/ biomass fired fixed chain grate boiler realizes zero pollution with the use of special dust collector solution (water film dust collector, bag type static electricity dust collector, double towers desulfurization, etc.). Because its steady performance and low fuel consumption, make it is popular in market.

DZH coal/ biomass fired fixed chain grate boiler realizes zero pollution with the use of special dust collector solution (water film dust collector, bag type static electricity dust collector, double towers desulfurization, etc.). Because its steady performance and low fuel consumption, make it is popular in market.

DZL 4200kw biomass hot water boiler 4200kw, widely used for central heating, water heating system in wood drying, heating & drying in wood pellets productions line.

Boiler advantages
1.Smoke and dust separator chamber
Separate smoke and dust according to inertia,reduce the original effluent concentration of soot.
2.Optimized design CAD
Choose the best furnace from dozens of options,improve economical efficiency.
3.Convex tube plate
improve tube plate flexibility, so as to reduce the heating stress of welded sew at the pipe end.
Prevent tube plate cracking, cancel bracing,simplify the structure.
4.Large size of simple circulation loop drop pipe and lower set box
Increase the flow rate of water on water cooling wall in order to prevent subcooled boiling. To prevent pipe explosion,Increase the reliability of water cycle
5.Self support
Cancel the steel frame, save steel material.
6.New pattern of furnace arch
Strengthen the combustion ,strong adaptability of coal quality,improve combustion efficiency.

YYQL series Vertical gas oil fired thermal oil boiler is packed and full automatic thermal oil boiler, adopts three-pass structure, full corrugated coil. The heat carrier is heat conduction oil, rated working pressure 1.1MPa, working temperature ≤350℃. After boiler arriving at users’ site, only need to consider to fill the heat conduction oil, connect fuel (gas or oil) and electricity source.

Boiler design advantages
1. Adopting automatic screw feeding, with reasonable second air technology and half gasification structure
helping fuel combust completely, the thermal efficiency can reach more than 90%. Stable flame, producing
steam cautiously.
2. Primordial dust emissions density is low:The volume of the coal biomass-fired steam boiler is large and there is a dust
separation device, so the primordial dust emissions density will be controlled much lower than the standard allowed.
3. Control system: Installing microcomputer to operate with one-button, people just set the process, and it can
work automatically during the operating time. Once any abnormal situation to happen, stopping automatically
with sound-light alarm, and pointing to the failure code, so it saves time to maintain.
4. Our protected device is safe and reliable. Selecting superior pressure controller, safety valve, low water alarm,
overpressure alarm, over-temperature alarm, in order to make boilers operate safely.
5. Heating fast:There are many spiral gas tubes in the boiler and almost half of the coal fired steam boiler shell
can be heated, so the temperature can up soon.
6. It is simple to clean slag only after burning completing.

This series boiler is three return fire tube steam boiler. It is equipped with good performance burner and advanced techniques. The burning control, water feed, programs run, etc, is full automatic. This fantasy boiler is safe and reliable, and also has the advantage of compact structure, simple operation, easy installation, high efficiency, less pollution and noise,etc.

Automatic biomass bruner boiler, fire tube biomass boiler.
700kw biomass sawdust burner boiler, high efficiency hot water boiler for wood kiln drying.

Industrial electric hot water boiler, 500kw heating boiler for wood dryer.
Automatic electricity powered boiler, no pollution, easy installation, quick assembly, simple operation.

WDR electric hot water boiler, 200kw-7000kw thermal capacity. No pollution & fully-automatic control & quick running.

LHS Series vertical type steam boiler is equipped with high-quality pressure relief valve, water level electrode, water level gauge, pressure gauge, pressure controller, and other accessories to ensure boiler’s reliable operation.

LHS Series vertical type steam boiler is equipped with high-quality pressure relief valve, water level electrode, water level gauge, pressure gauge, pressure controller, and other accessories to ensure boiler’s reliable operation.

1. The small water volume, fast steam generating. LHS Series steam boiler has vertical design and compact structure, just requires small floor space;
2. Adopting large-volume steam chamber, and lay-in steam/water separator can produce high-quality steam stably;
3. The lay-in low water level protection device to detect the change of water level at any time, totally avoid dry-burning and operation accidents;
4. LHS Series vertical type steam boiler is equipped with high-quality pressure relief valve, water level electrode, water level gauge, pressure gauge, pressure controller, and other accessories to ensure boiler’s reliable operation.

YY(Q)W series adopting high quality corrugated coil to carry the heat conduction oil, increase the heat transfer area, reasonable gap between coil tubes to fit the hot expansion and cold contraction . Average coil tubes’ working life more than 17years.

YY(Q)W series gas oil fired thermal oil boiler is packed and full automatic thermal oil boiler, adopts three-pass structure, full corrugated coil. The heat carrier is heat conduction oil, rated working pressure 1.1MPa, working temperature ≤350℃. After boiler arriving at users’ site, only need to consider to fill the heat conduction oil, connect fuel (gas or oil) and electricity source.

The small water volume, fast steam generating. LHS Series steam boiler has vertical design and compact structure, just requires small floor space;

DZL series steam boiler is the kind of automatic, horizontal, three-pass, and fire tube boiler; water wall tubes are arranged along both sides of the inner furnace; it is equipped with high efficiency cyclone, and dust concentration can meet the environmental requirements of second-class area; equipped with Induced Draft Fan and Forced Draft Fan.

Biomass burning hot air stove, high temperature air generating, use for heating, drying.

Industrial biomass hot air generator furnace, use for drying clay.

YY(Q)W series gas oil fired thermal oil boiler is packed and full automatic thermal oil boiler, adopts three-pass structure, full corrugated coil. The heat carrier is heat conduction oil, rated working pressure 1.1MPa, working temperature ≤350℃. After boiler arriving at users’ site, only need to consider to fill the heat conduction oil, connect fuel (gas or oil) and electricity source.

YY(Q)W series adopting high quality corrugated coil to carry the heat conduction oil, increase the heat transfer area, reasonable gap between coil tubes to fit the hot expansion and cold contraction . Average coil tubes’ working life more than 17years.

Boiler Advantages
1. Professional industrialized packing design:stainless steel outside,elegant appearance,corrosion prevention.
2. Technology blue hammer paint coating:antiseptic and rustproof,good industrial quality.
3. Double-deck aluminum silicate 12cm for heat preservation:secondary air leak proof design,seal sealed,avoid air leakage.
4. Low nitrogen and large corrugated furnace design:the whole forcing,large radiant heating furnace,heating free expansion.
5. Double door open design about the front and rear smoke box:elegant appearance,convenience for overhaul.Misplaced double-deck ceramic fiber seal,loop design,repeated use.
6. Solid round steel pull rod structure design:enhance the tube plate intensity,prevent tube plate cracking.
7. Low-dropout explosion door design:anti-explosion,reduce the damage of the boiler
8. “sector shape” three return layout design:designed by patent agency,extend smoke flow,strengthen heat transfer
9. “grate type” steam water separator:decrease steam humidity,improve steam quality
10. Quick-setting high strength refractory material:strong solidification,long use cycle,no shake off
11. Stainless cap thread embellish:antiseptic and rustproof,elegant appearance
12. Double safety valve,double water level gauge,double pressure gauge design:backup guarantee,safe and reliable
13. Integrated wiring device:more convenience for the wire connection,make overhaul more simply,beautiful appearance after installation.

Horizontal Steam Boiler Used for Food Industry is an safe equipment with full automatic control system. It is the patent products of Yuanda Boiler, the patent number is 2014 2 0687381.0. Horizontal Steam Boiler Used for Food Industry has wet back structure, it can adapt to the high temperature, has a good sealing, increase the radiation heat transfer area and improve the heat transfer efficiency. As a packaged fire tube boiler, it has the characteristics of compact structure and small size, strong load adaptability and low water quality requirement. By equipping with economizer, the thermal efficiency could reach as high as 98%.

Boiler Advantages
1.WNS series oil Gas fired steam boiler realize high efficient heat transfer, sufficient burning with brand burner, environment protection
2.Adopted international latest technology for big volume combustion room design, and use brand burner machine
3.Corrugated furnace design make large heat transfer area and protect furnace
4.Using spirally corrugated tube , 1-2 faster heat transfer efficiency and remove hidden danger of welding cracks
5.Adopted wet-back structure that can reduce faults rate and maintenance cost
6.Equipped with protection devices for overheating, over pressure, lacking water, leak detection, flame out etc.

Full automatic PLC ON/OFF controller, free settable thermal operation temperature and working time, automatic temperature control, automatic over-pressure/ over temperature interlock chain stop protection, visible system’s working states (burner’s states, system working pressure/ oil temperature) on screen etc.