Industrial boiler types according to combustion

Industrial boiler divide into two types according to combustion, one is fire tube boiler, another one is water tube boiler. 

fire tube boiler vs water tube boiler

Fire tube boiler

The subsequent stage in the act is usually to boil water and make steam. The goal should be to make heat flow as completely as possible from the flame on the water. The lake is confined within a restricted space heated by the fire. The steam produced has lower density versus the water and so will accumulate on the highest level within the vessel; its temperature will at boiling point and definitely will only increase as pressure increases. Steam in this state (in equilibrium with all the liquid water and that is being evaporated inside boiler) is termed "saturated steam". By way of example, saturated steam at atmospheric pressure boils at 100 °C (212 °F). Saturated steam removed from the boiler could have en trained water droplets, however a well designed boiler will supply virtually "dry" saturated steam, with very little en-trained water. Continued heating in the saturated steam brings the steam into a "super-heated" state, in which the steam is heated to some temperature above the saturation temperature, with no liquid water can exist under cures. Most reciprocating steam engines of the 1800s used saturated steam, however modern steam power plants universally use super-heated steam which allows higher steam cycle efficiency.

  

Water tube boiler

Diagram of any water-tube boiler.

A way to rapidly produce steam should be to feed the stream being forced in a tube or tubes between the combustion gases. The earliest instance of this became developed by Golds-worthy Gurney inside the late 1820s to be used in steam road carriages. This boiler was ultra-compact and light in weight and this also arrangement has since get to be the norm for marine and stationary applications. The tubes frequently possess a large number of bends and sometimes fins to optimize the top area. This type of boiler is normally preferred in questionable applications because the high pressure water/steam is contained within narrow pipes which may contain the pressure having a thinner wall. It can however be subject to damage by vibration in surface transport appliances. In a cast iron sectional boiler, sometimes known as the "pork chop boiler" the water is contained inside surefire sections. These sections are mechanically assembled on site to build the finished boiler.

Difference between fire tube boiler and water tube boiler can view here: http://www.zghorizontalboiler.com/water-tube-boiler-vs-fire-tube-boiler.html

industrialboilermerry@hotmail.com

Fire tube boiler manufacturer- Subsidy project in foreign

Fire tube boiler developed as the third of the four major historical types of boilers: low-pressure tank or "haystack" boilers, flued boilers with one or two large flues, fire-tube boilers with many small tubes, and high-pressure water-tube boilers. Their advantage over flued boilers with a single large flue is that the many small tubes offer far greater heating surface area for the same overall boiler volume. The general construction is as a tank of water penetrated by tubes that carry the hot flue gases from the fire. The tank is usually cylindrical for the most part—being the strongest practical shape for a pressurized container—and this cylindrical tank may be either horizontal or vertical.

A fire tube boiler is a type of boiler in which hot gases from a fire pass through one or 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.

Model: ZG Boiler- Fire Tube Type Boiler

Working Principle of steam boiler:
Inside of the boiler flame after combustion, the formation of high temperature gas flow within the smoke pipe, outside is water.

Fire tube type steam boiler Application:

Textile industry, Sterilization of the food industry, disinfection of steel industry , cleaning of the power electronics industry , chemical process heating

Fire tube type boiler features:

Multiple protective devices
High combustion efficiency
Being suitable for the structure of human body

This type of boiler was used on virtually all steam locomotives in the horizontal "locomotive" form. This has a cylindrical barrel containing the fire tubes, but also has an extension at one end to house the "firebox". This firebox has an open base to provide a large grate area and often extends beyond the cylindrical barrel to form a rectangular or tapered enclosure. The horizontal fire-tube boiler is also typical of marine applications, using the Scotch boiler. Vertical boilers have also been built of the multiple fire-tube type, although these are comparatively rare; most vertical boilers were either flued, or with cross water-tubes.

Source:http://www.zgsteamboiler.com/news/fire-tube-boiler-manufacturers.html
Email to:industrialboilermerry@hotmail.com; merryzzboiler@gmail.com to get contact with ZG boilers' engineer.