Equipment Performance

1Provide***Superior energy-saving system design solutions:1Condensate Recovery System Design Proposal, Reduces Gas Consumption2Electrical control system design solutions, reduce energy consumption

2Equipped with imported brand burners, high level of automation, automatically blowing according to controller instructions, electronic automatic ignition, automatic combustion, and automatic proportioning of oil (gas), with excellent performance and safety stability, and good combustion effect. It also features an extinguishing protection device to ensure safe operation.

3Computerized bath boiler controller, all functions are magically stored on a smart chip, the boiler can be turned on with one button, operates automatically with timed and temperature settings. Users can set the boiler's start and stop times, and once set, there's no need for constant supervision, saving time and effort.

4The fire tube is fitted with flame-retardant baffles, which slow down the exhaust smoke speed, enhance heat exchange, resulting in lower smoke temperature from the smoke chamber, reducing heat loss and saving fuel.

Boiler heat loss

1. Heat loss caused by flue gas emissions from gas-fired boilers is primarily due to the volume of flue gas and the emission temperature. During the exhaust process, when the boiler is not in a sealed state, air flow carries away some heat, resulting in heat loss. Flue gas emissions account for the largest proportion of heat loss, approximately 4.5%-8.2%.

2. Heat loss due to incomplete fuel combustion is primarily caused by two factors. First, the flue gas in the boiler contains combustible gas components, which are related to the furnace temperature, air coefficient, and the mixing flow of fuel and gas, thereby affecting the volatilization rate and content of the fuel. Second, solid fuel is not fully combusted. More factors relate to the granular nature of solid fuel. During the combustion process, if the temperature is not high and the gas flow is poor, fly ash can easily settle, leading to sediment accumulation. Too much sediment accumulation prevents the remaining fuel particles from being fully combusted, resulting in the formation of soot and causing solid fuel heat loss in gas boilers that have not been fully combusted. Factors such as fuel properties, moisture content, temperature, power load, and the air propulsion force inside the boiler can easily lead to fuel heat loss.

3. Heat Loss from Gas Boilers: The heat lost to the external air from the metal structures exposed to the atmosphere, such as the boiler unit, furnace walls, and flues, is referred to as heat loss by radiation. This loss is directly related to the surface area of the boiler unit, its insulation, and thermal insulation conditions.

4. Heat loss due to boiler ash and slag sediment: During the combustion process of fuel in a gas-fired boiler, as the internal temperature of the boiler continues to rise, the heat loss caused by the expulsion to the outside of the boiler is referred to as heat loss due to boiler ash and slag sediment.

Combustion Equipment

During the development of boilers, the type of fuel greatly affects the furnace and combustion equipment. Therefore, it is not only necessary to develop various types of furnaces to accommodate the burning characteristics of different fuels, but also to enhance combustion efficiency to conserve energy. Furthermore, technological improvements to the furnace and combustion equipment require minimizing pollutants (*oxides and nitrogen oxides) in the boiler exhaust.

Mechanized Grate

Early potshell boilers used fixed grates, predominantly burning high-quality coal and wood, with manual operations for coal addition and slag removal. The introduction of the straight-tube boiler led to the adoption of mechanical grates, with chain grates gaining widespread use. The air supply under the grate evolved from a non-segmented "total storage wind" to segmented air supply. Initially, the firebox was low and had low combustion efficiency. Later, it was realized that the firebox volume and structure play a crucial role in combustion. The firebox was made taller, and arches and secondary air were introduced, thereby improving combustion efficiency.

Room heater

When the generator set power exceeds 6 megawatts, the grate sizes of these layer combustion furnaces are too large and the structures are complex, making them difficult to arrange. Therefore, room combustion furnaces began to be used in the 1920s, which burn coal powder and oil. Coal is ground into coal powder by a coal mill and then injected into the furnace chamber for combustion using a burner. As a result, the capacity of the generator set is no longer limited by the combustion equipment. Since the early stages of World War II, almost all power station boilers have been equipped with room combustion furnaces.

DC Burner

Early coal powder furnaces used an "U" shaped flame. The coal powder stream ejected by the burner first descends and then turns to rise within the furnace chamber. Later, a swirl burner arranged on the front wall emerged, forming an "L" shaped torch flame in the furnace. As the boiler capacity increased, the number of swirl burners also grew, which could be placed on both side walls or both front and rear walls. Around 1930, a straight combustion burner was introduced, arranged at the four corners of the furnace and mostly in a circular cutting combustion style.

Fuel boiler

After World War II, with oil prices low, many countries began widely using fuel oil boilers. Fuel oil boilers are easily automated. After the oil price hike in the 1970s, many countries turned back to coal resources. At this time, the capacity of power plant boilers also increased, demanding combustion equipment that not only burns completely and has stable ignition but also operates reliably, offers good low-load performance, and reduces pollutants in the exhaust.

In coal-fired (especially lignite-fired) power plant boilers, employing staged combustion or low-temperature combustion techniques, such as delaying the mixing of coal powder with air or adding flue gas to the air to slow down combustion, or dispersing burners to control furnace temperature, not only inhibits the formation of nitrogen oxides but also reduces slagging. Boiling combustion, a type of low-temperature combustion, can not only burn solid fuels with very high combustible ash content but also incorporate limestone into the boiling bed for desulfurization.

Gas boiler

Boilers were once a symbol of the industrial era, but as time has passed, this relic of the old industrial age struggles to fully meet the needs of modern enterprises. So how should a boiler company grappling with health issues address these challenges? Gas boilers can help you solve these problems!

Generally, common issues with boilers include being costly and environmentally unfriendly, posing significant safety risks, requiring ample space and dedicated management, and being麻烦 to operate due to the need for various safety permits. Using gas water heaters can address all these issues. Firstly, regarding cost and environmental concerns, gas boilers utilize combustible gases with no emissions. They also come with intelligent pressure control, eliminating risks like explosions or carbon monoxide poisoning. Due to advanced technology, these gas boilers occupy less space, are easy to operate without needing a specialist, and start automatically with a button press. Since they are not coal-fired, no safety permits are required.

Gas Boiler Water Quality Testing Procedures and Standards

Determination of Chloride Ion

Pipette 100 mL of boiler water into a 250 mL conical flask, add 2-3 drops of phenolphthalein indicator, which should turn pink. Then titrate with sulfuric acid until colorless. Add 2-3 drops of potassium ferricyanide indicator, and titrate with a standard silver nitrate solution until a cherry red color is achieved. Record the volume of silver nitrate used, multiply by 35.5 to obtain the chloride ion standard: chloride ion ≤ 400.

Determination of Alkalinity

Pipette 100ml of boiler water into a 250ml conical flask, add 2-3 drops of phenolphthalein indicator, the solution turns pink, titrate with the standard sulfuric acid solution until just colorless, then add 2-3 drops of methyl orange indicator, continue titrating with sulfuric acid until orange-red, record the volume of sulfuric acid consumed, this value is equivalent to the alkalinity.

Measurement of 3 Hardness

Pipette 100ml of boiler water into a 250ml conical flask, add a few granules of Lohmann T indicator, then add 2-3 drops of ammonium chloride buffer solution. Titrate with the EDTA standard solution until the solution changes from wine red to blue. Record the volume of EDTA solution consumed; this value is equivalent to the boiler water hardness.

Standard: Hardness: less than or equal to 0.03 mmol per liter for steam boilers

Water heater 0.6 mmol per liter

pH Measurement

Measure with a pH test strip

Standard: pH level: 10-12