福彩快3下载

FAQ

the company has rich experience to provide customers with a full set of boiler equipment services, sitong is with excellent professional skills and positive spirit of innovation to create a world-class boiler equipment and struggle. immediately advisory; we are dedicated to serve you!the company has rich experience to provide customers with a full set of boiler equipment services, sitong is with excellent professional skills and positive spirit of innovation to create a world-class boiler equipment and struggle. immediately advisory; we are dedicated to serve you!

FAQ of Oil /Gas Steam Boiler

Oil gas steam boiler product

oil gas steam boiler product

What are the available fuel for the oil gas fired boiler?

oil gas fired boiler could burn both liquid fuel and gaseous fuel. the liquid fuel could be heavy oil, light oil, diesel, furnace oil, bunker oil, lpg (liquefied petroleum gas), etc. the gaseous fuel could be natural gas, city gas, bio-gas, etc.

Whether the boiler can burn dual fuel or multi-fuel?

福彩快3下载sitong boiler have oil burner, gas burner, and oil&gas dual fuel burner, we can offer the specific burner based on customers’ requirement.

What is the texture of spirally corrugated tube?

福彩快3下载the texture of spirally corrugated tube is 20#.

The brand of burner?

the brands of burner are italy baltur, rellio, elco, etc.

What is the thickness of combustion chamber?

the thickness of corrugated furnace is different based on working pressure and furnace diameter, generally, the thickness is between 10~18mm, large combustion space, and combustion sufficient.

What is the advantages of fire tube boiler?

福彩快3下载this fire tube boiler has compact structure and convenient operation, strong load adaptability, lower water quality requirement, and the failure rate of it is lower than 0.1!

Details of electric control cabinet.

福彩快3下载electric control cabinet adopts plc touch screen, display in english. it shows working condition details of boiler, such as water temperature, water pressure, exhaust gas temperature, and over-pressure alarm, etc. in addition, the cabinet is used for set up the parameter, record and analyze the operation data, etc.

What is the inlet pressure of gas burner?

the inlet gas pressure is different for different capacity boiler, for example, the pressure for 2 ton steam capacity boiler is about 8~10kpa, while for 4 ton steam capacity boiler is about 18~20kpa.

What is the combustion mode of oil gas fired boiler?

the combustion mode of oil gas fired boiler is chamber combustion. together with air, the powered fuel (solid fuel – coal dust), atomized fuel (liquid fuel – oil), and vaporized fuel (gas fuel – natural gas) is sprayed into furnace (combustion chamber) for suspension combustion.

Differences between fire tube boiler and water tube boiler.

福彩快3下载what tube boiler also called shell boiler, the flue gas flows in fire tubes or smoke tubes, and heat the water, steam or the steam-water mixture outside the tubes. compare with the water tube boilers, fire tube boilers have relatively smaller steam capacity, between 0.5~20t/h, and working pressure is between 0.7-1.6mpa. this fire tube boiler has compact structure and convenient operation, strong load adaptability, lower water quality requirement.

福彩快3下载water tube boiler refers to the boiler that water, steam or the steam-water mixture flows in the tubes, and fire or the smoke are combustion and flow outside the flues. compare with fire tube boilers, water tube boilers has the features of larger steam capacity and pressure, better heat transfer property and higher combustion efficiency, otherwise, the requirement on water quality is higher.

Difference between wet back and dry back structure.

福彩快3下载wet back structure refers to the drum, tube plate, and backboard in reversal chamber are surrounded by water. it can adapt to the high temperature, and has a good sealing, at the same time, it increase the radiation heat transfer area and improve the heat transfer efficiency. while, there is no water interlayer in the dry back boiler, and the backboard of reversal chamber is composed of refractory material, it is easy damaged by the high temperature.

The requirement of gas-fired steam boiler for local atmospheric pressure

required environment: 20℃, 1013.25mbar.

福彩快3下载when select the model, the environment condition (temperature and elevation) should be considered, correct the burner output curve when the environment condition is different.

FAQ of Coal/Biomass Steam Boiler

Biomass steam boiler product

biomass steam boiler product

What are the spare parts for DZL/SZL series coal/biomass fired boiler?

generally, the spare parts are instrumentation valve, grate plate, gasket, etc.

What are the difference between DZL and SZL with the same capacity?

DZL
1.Usually for the boiler with capacity lower than 10Ton
2.Easy for transportation
3.Lower request on water quality
4.Low boiler room construction charges
5.Low requirement on water quality

SZL
1.Usually suitable for bigger capacity boiler
2.Good water circulation, small water volume
3.Warm up faster, higher steam quality
4.Higher request on water quality
5.Higher thermal efficiency

What are the differences between vertical type boiler and horizontal type boiler with the same capacity?

1.Structure of vertical boiler is compact, occupy a limited area.
2.Convenient on installation and removal.
3.Low cost and investment on capital construction. Steam exhausted fast and sufficient.
1.The combustion space of horizontal is big, fuel can be burned completed.
2.The thermal efficiency is higher than the vertical boiler,
3.Horizontal type: less thermal loss, stronger output, and higher steam quality.

What are the limitation (size, humidity, chemical element concentrations) of coal fuel/solid fuel/wood fuel?

Size requirement of coal:6-25mm
Size requirement of blending coal: <50mm (the coal less than 6mm should less than 30%)
Diameter of biomass particle: 6~10mm, length: 25~50mm, water content < 15%, ash content < 2%, sulphur content<0.07%, chlorinity <0.07%, nitrogen content < 0.5%

What is the size of furnace door and blower hopper?

Size of furnace door:
Standard elliptical furnace door:300*800*1500

Blower hopper size:
2 tons conical hopper: 1400*800*1500
4 tons conical hopper: 2200*1400*1500

What is the combustion mode of coal/biomass fired boiler?

福彩快3下载the combustion mode of coal/biomass fired boiler is layer combustion. place the flue on the fixed or moved grate, to form an evenly fuel bed with a certain thickness, air comes from the bottom of grate, and combustion occurred on the fuel bed.

What is the thickness of refractory?

the thickness of refractory: 50-60mm

What is the installation sequence?

福彩快3下载boiler- economizer- dust collector – id fan – chimney

What are the tube seat at the top of steam boiler?

pressure gauge – safety valves (two) – main steam valve – auxiliary valve – water inlet

Material of boiler drum / steel plate / tube.

Boiler drum material: Q245R,carbon steel, executive standard: GB713-2008
Tube material: 20# seamless steel pipe, carbon steel, executive standard: GB3087-2008
福彩快3下载 Still kettle material: Q345R, alloy steel, executive standard: GB713-2008

What is the height of chimney?

the chimney is usually 30m, irrespective of the special circumstances.

What are the heat-resistance temperature of grate and furnace?

the heat resistance temperature of grate is related to the grate material, the highest temperature could be as high as 1100℃, and the lower temperature could be 700℃.

What is the temperature of smoke gas?

the highest temperature of smoke gas is 165℃.

15.How long can the coal/biomass fired boiler works?

福彩快3下载coal/biomass boilers could work for 10~15 years, under correct operation, high water and coal quality, etc.

How to avoid collapse of bricks, and what should be done if it happened?

福彩快3下载when boiler installation finished, drying the boiler according to the manual, it’s very important to avoid collapse of bricks.

17.How many stokers do I need for one boiler?

usually 3 person, every 8 hours a shift.

Rules for ash removal.

clean the ash and leaked coal in ash hopper in definite time. every shift should open the soot door at the bottom of boiler left for twice, to clean the ash deposition in the wind chamber, make sure there is no blocking.

How long it takes for boiler installation and debugging?

福彩快3下载the boiler is easy to install, it could be finished within 2 weeks, we have the professional abroad installation team to help for installation. moreover, our technicians offer after-sale service every quarter in many countries, like philipines, bangladesh, indonesia, pakistan.

FAQ of Thermal Oil Boiler

Thermal Oil Boiler product

福彩快3下载thermal oil boiler product

What is the highest temperature that thermal oil heater could achieve?

Sitong thermal oil heater can reach as high as 330℃, and working under low pressure (<1.0MPa)
The main types of Sitong thermal oil boiler includes YGL series vertical type fixed grate coal/biomass fired hot oil boiler, YLW series horizontal type chain grate coal/biomass hot oil heater, YLL series vertical type chain grate coal/biomass fuel thermal oil boiler, and YY(Q)W series horizontal type oil gas fired thermal fluid heater.

What is the size and humidity of coal/biomass fuel?

Size requirement of coal:6-25mm
Size requirement of blending coal: <50mm (the coal less than 6mm should less than 30%)
Diameter of biomass particle: 6~10mm, length: 25~50mm, water content < 15%, ash content < 2%, sulphur content<0.07%, chlorinity <0.07%, nitrogen content < 0.5%

What is the feeding method of Sitong coal fired thermal oil heater?

福彩快3下载the combustion equipment of ygl series vertical type coal fired hot oil boiler is fixed grate, the feeding method is manual feeding.

the combustion equipment of ylw series horizontal type coal hot oil heater and yll series coal fired thermal oil boiler is chain grate, the feed method is automatic loading by coal hopper.

What are the heat-resistance temperature of grate and furnace?

The heat resistance temperature of grate is related to the grate material, the highest temperature could be as high as 1100℃, and the lower temperature could be 700℃.
The highest heat resistance temperature of furnace could be about 1700℃~1800℃.

What is conduction oil/ hot oil / heat transfer fluid?

conduction oil has a high boiling point, it usually used for the industries that need the temperature of 150~350℃, to instead of steam. the hot oil has the advantages of high transfer efficiency, fast heat transfer, and good thermal stability.

As the heat-transfer medium, hot oil has the characteristics of:
1.Achieve high operation temperature (350℃), under the low working pressure (<1.1Mpa).
2.Decrease the working pressure of high temperature heating system, improve safety and stability of system and equipment.
Fit for process requirement on wider temperature range (180).

FAQ of Electric Heating Boiler

Electric Heating Boiler product

福彩快3下载electric heating boiler product

Power consumption of different capacity electric heating boilers.

Steam Capacity (Ton) 0.1 0.2 0.3 0.5 0.7 1.0 1.5
Power Consumption (KW) 75 147 219 368 547 731 1083

Automatic operation device

sitong electric heating boiler employs full automatic intelligent control technology, and adopts plc control system to make the operation more simple and safe.

福彩快3下载the boiler controller uses siemens/ delixi electrical components. operator can control water level, water temperature, fire situation and working pressure, etc. moreover, the operation parameters could be set, and they are shown on the screen.

The lifetime of cartridge heaters/ electrical heated tube.

福彩快3下载the electrical heated tube have the ce and ccc certification to guarantee the long working time, it can be used for about 20000 hours.

Thickness of insulation heat preservation materials

The thickness of insulation heat preservation materials is different based on the requirement of internal temperature, external temperature, or heat loss requirement. Generally, the thickness of the insulation heat preservation materials are between 100~200mm.
The common insulation heat preservation materials are includes rock wool, aluminium silicate products and cement perlite products.

福彩快3下载the highest operate temperature of rock wool is 600℃, it has a rather lower thermal conductivity, the heat insulation performance is better. the highest operate temperature of aluminium silicate products is 800℃, it has an excellent and reliable physical insulating property.

Safety interlock system

Sitong electric heating boiler production device:
1.Monitoring of water level
2.Steam over-pressure protection
3.Electric leakage protection
4.Water shortage protection
5.Power abnormal protection
6.Integrated gas manifolds and protection system
7.Flue gas monitoring device

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