Economizers are a kind of water tube heat exchangers used in heat, steam or power generation facilities to recover some of the heat on the flue gases leaving the boilers and going to the chimney.<\/p>\n
Heat recovered from smoke gases thrown from the boiler to the chimney;<\/p>\n
When the boiler is fed to the feed water, the Feed Water Economizer,
\nOperating water in the facility, bath – shower, process washing etc. Potable Water Economizer, when supplied to water for purposes,
\nWhen the burner is used for preheating combustion air or heating ambient air, it is called Air Heater Economizer.<\/p>\n
Economizers can be classified as condensing and non-condensing according to dew point. In a condensing economizer, maximum savings are achieved with flue gas temperatures that can be reduced to 60 \u00b0 C, depending on the type of fuel burned in the boiler.<\/p>\n
Economizer gas outlet temperature can be reduced up to 180 \u00b0 C in fuel oil fired boilers, 160 \u00b0 C in diesel fired boilers, and 110 \u00b0 C in natural gas and LPG boilers. It can be reduced in natural gas fired boilers up to 60 \u00b0 C in condensing systems.<\/p>\n
Depending on the boiler flue gas outlet temperature and the type of economizer to be installed depending on the type of fuel, a yield increase of 3% to 8% is achieved in the boiler or plant efficiency.<\/p>\n
Depending on the increase in efficiency, less fuel is spent for the same capacity or more production is taken from the boiler with the same amount of fuel.
\nLess CO2 emissions will be released to the nature with less fuel burned. More environmental systems can be created.<\/p>\n
It has been observed that the cost of the heat recovered in the plants operating continuously pays for the investment between 5 and 20 months depending on the type of economizer to be made.<\/p>\n
Pipes forming the heating surface used to transfer the heat in the flue gas in the economizer; It is made with High Frequency Welded Finned Tube used in Natural Gas Cycle Power Plants.<\/p>\n
With the use of High Frequency Welded Finned Tube, the heat in the smoke gas is transferred to the perfectly heated fluid and more compact systems are obtained.<\/p>\n
Turkey’s domestic win in the first and expressed as a single combi is ekononomiz, multiple economizer is designed as a joint flap use in the same body and producing, our company offers place and price advantage to its customers with manufacturing of the economizer.<\/p>\n
Economizers are self-supporting and by-pass flaps are designed on their own. Therefore, assembly times are much shorter, without the need for separate carrier construction.<\/p>\n","protected":false},"excerpt":{"rendered":"
It is called devices that convert chemical energy in boiler fuel to heat energy. The prepared fuels (oil or coal) are pulverized with air and sprayed into the combustion chamber. The heat released as a result of combustion evaporates the water in the boiler pipes. The remaining solid waste and slag fall into the water trough under the boiler and are then thrown out with tapes. The gases formed as a result of combustion are sent to the chimney around 110\u2013160 C after the heat is taken thoroughly. The steam produced in the boiler is directed to the turbine.<\/p>\n
Steam production; is the process of converting water into steam with the effect of heat. The water and steam temperatures in the water source are the same. This temperature is called l\u0131\u011f\u0131 saturation temperature.. At constant pressure, a heat must be introduced to allow evaporation in a liquid source. This heat is called \u201clatent heat\u201d or \u201cevaporation heat..<\/p>\n
If the steam produced is at boiling point and does not contain water, this is called \u201cdry saturated steam\u201d and \u201cwet steam orsa if it contains water. If the steam is heated to a point above the boiling point, it is called bir superheated steam..<\/p>\n
Boiler Types<\/p>\n
The boilers used in heating plants are classified as follows depending on various criteria.<\/p>\n
1- According to the type of material used in boiler construction;
\n– Boilers with cast slice
\n– Steel boilers<\/p>\n
2- According to the type of fuel used;
\n– Gas fired boilers (Natural gas)
\n– Liquid fuel boilers (Diesel, fuel iloil)
\n– Solid fuel boilers (hard coal, wood, etc.)<\/p>\n
3- According to the pressure of the combustion chamber;
\n– Counter pressure boilers
\n– Boilers without counterpressure<\/p>\n
4- According to heating fluid type;
\n– Hot water boilers
\n– Boiling water boilers
\n– Steam boilers<\/p>\n
5- In terms of structural design of the boiler;
\n– Flame tube boilers
\n– Boilers with flame smoke tubes
\n– Boilers with smoke pipe
\n– Water tube boilers<\/p>\n
6- In terms of the shape of the accident;
\n– Semi-cylindrical boilers
\n– Full cylindrical boilers
\n– Prismatic package boilers<\/p>\n
In petrochemicals and refineries, boilers are generally used in two main types. These; flame tube boiler and water tube boiler.<\/p>\n
Flame Tube Boilers<\/p>\n
All the heat transfer in the flame tube boilers is made by the pipes (tubes) surrounded by water, through which hot combustion gases pass. Water and steam are located in the same section (barrel section). The steam output comes out of the drum. Examples of such boilers are steam locomotives and steam boilers and steam boilers through which the hot gas or hot liquid product passes through the tube in the process units.<\/p>\n
Water Pipe Boilers<\/p>\n
In boilers with water pipes, the combustion chamber is surrounded by tubes through which the water and steam mixture circulates. These types of boilers are used more widely in refinery operations than those with flame tubes. His designs have shown significant improvements in recent times. Vertical or near vertical tubes are used efficiently in both radiation (combustion chamber) and convection (combustion gases) zones. In addition, waste heat of hot flue gases is maximized by the use of economizers and air heaters.<\/p>\n
Packaged boilers are the type of steam boiler that has been widely used recently in refineries. The reason it is called as package is that these boilers are brought to their place in the refinery and assembled as a complete unit after they are made by the manufacturer. The limitation in the size of these boilers is determined by transportation difficulties. Another type of boiler is the boiler built on site. However, in terms of cost, it is about twice as expensive as package boilers. Boiler costs are generally rated per unit quantity of steam produced. Many packages of tubular water boilers have one of the following structural views. These are called \u201cA\u201d, \u201cD\u201d and \u201cO\u201d type boiler.<\/p>\n
– \u201cA\u201d Type Boiler
\nBelow are two small dramas and collectors. The upper drum is designed to provide steam and water separation. Most of the steam produced is formed in the central furnace wall tubes entering the drama.
\n– \u201cD\u201d Type Boiler
\nIn this type of boilers steam arms enter around the drama water level. B\u00f6rners are usually at the end of the wall. It is the most widely used boiler type in petrochemical plants.<\/p>\n
– \u201cO\u201d Type Boiler:
\nTransportation problems are the most important factor in determining the size of such boilers. An \u201cO\u201d type boiler of the same capacity should be longer than other boiler types. Bases of \u201cD\u201d and \u201cO\u201d type boilers are usually covered with bricks. In all modern boiler constructions, the water tubes forming the combustion chamber wall are either tangentially connected or metal fin (fin) with gas passage sealing.<\/p>\n
Boiling and Circulation<\/p>\n
The aim is to produce steam by boiling. As the water begins to boil, it can be seen that in a bottom heated container, the steam emerges in the form of bubbles. It is replaced by bubbles and hot water, colder and steam-free water. In this way, a circulation is formed which transports the vapor formed to the surface.<\/p>\n
In a water tube boiler, water and steam pass through a large number of tubes. The basic idea is like the one-circuit diagram<\/p>\n","protected":false},"featured_media":6363,"template":"","meta":[],"product_cat":[105],"product_tag":[],"yoast_head":"\n