I. Overview

This is a quick-installation horizontal internal combustion boiler with three-pass fire-tube design. It features an offset furnace tube with a semi-wet-back structure, where high-temperature flue gases sequentially wash the second and third pass smoke tubes, and then are discharged into the atmosphere through the rear smoke chamber and chimney. The boiler is equipped with removable front and rear smoke box lids for easy maintenance. The boiler is fitted with world-renowned burners and incorporates advanced technologies such as automatic proportional combustion control, automatic water regulation, programmable start/stop, and automatic operation. It also features high and low water level alarms, as well as automatic protection functions for extremely low water levels, over-pressure, and extinguishing. This model boasts a compact structure, safety, ease of operation, rapid installation, low pollution, low noise, and high efficiency, making it widely applicable for industrial steam use in enterprises, hotels, office buildings, residential buildings, and other facilities, as well as for domestic heating and steam.

Our company's developed Light Oil Boiler series utilizes relatively advanced automation technology on an international scale.Italian ImportedThe fully automatic burner, as the primary combustion equipment, is controlled by a more advanced combustion program controller. It can achieve all necessary functions for the normal combustion of fuel boilers, and can automatically implement protective shutdown in normal, accident, and extreme conditions. Equipped with corresponding level controllers and pressure proportional regulators, it ensures low and high level indication, overpressure indication, and adjustment, maintaining water level fluctuations within the normal range and steam pressure within the permissible pressure fluctuation range. It also triggers protective shutdown indication in cases of extremely low water levels or overpressure.

II. Key Features

The overall structure is rational, compact, and belongs to the boiler island type, meeting the requirements for quick assembly and factory shipment. The product is composed of three main parts upon leaving the factory: the boiler main unit, chimney, and pipeline system. The main unit and chimney sections have been fully manufactured in the factory, with the pipeline valves and instruments already installed. Upon arrival at the site, simply assemble the main unit and chimney. Connecting the gas, power, and water pipelines on site allows for immediate testing. This significantly shortens the installation period while ensuring product quality.

2. Advanced design performance. The boiler's main body features an integrated structure, with the burner assembled on the front smoke box cover, primarily arranged with heating surfaces and combustion chambers. It boasts a rational and compact structure, low steel consumption, a biased corrugated furnace tube, and insulation with a new lightweight thermal insulation material. The outer packaging is made of colored thin plates, with a rectangular shape, making the boiler's performance, weight, structural dimensions, and appearance significantly more advanced and aesthetically pleasing compared to domestically produced products of the same capacity. The boiler's water supply equipment is configured on the boiler's right-hand base, integrating it with the main body and eliminating the need for an additional foundation.

3. The water circulation is simple, with a well-designed structure of pressure parts. It can safely operate while ensuring water quality.

4. Comprehensive auxiliary machinery available, featuring advanced comprehensive technical performance.

Equipment Performance

1Provide***Superior system energy-saving design solutions:1Condensate Recovery System Design Proposal, Reduces Gas Consumption.2Electrical control system design solution, reduced power 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 fuel/air, with stable performance and safe operation, excellent combustion effect. It also features an extinguishing protection device to ensure safe operation.

3Computerized bath boiler controller, all functions are magically stored on a single smart chip. The boiler can be started with one button, operates automatically with scheduled timing and temperature settings. Users can set the boiler's on/off times, and once set, there's no need for constant supervision, saving both time and effort.

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

Boiler heat loss

1. Heat loss caused by flue gas emissions from gas boilers is primarily due to the volume of flue gas and the temperature of flue gas emissions. 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 mainly caused by two factors. One is the presence of combustible gas components in the flue gas within the boiler, which is related to the furnace temperature, air coefficient, and the mixing flow of fuel and gas, thereby affecting the volatilization speed and content of the fuel. The other is the incomplete combustion of solid fuel, where more factors are related to the granular nature of the solid fuel. During the combustion process, if the temperature is not high and the airflow is not good, fly ash can easily produce sediments. Too much sediment accumulation prevents the remaining fuel particles from being completely combusted, resulting in carbon black and causing heat loss in the solid fuel of the gas boiler. Factors such as fuel properties, moisture content, temperature, power load, and the air propulsion force within 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 due to 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 sediment: During the combustion process of fuel in a gas-fired boiler, as the internal temperature of the boiler continuously rises, the heat loss that is expelled to the outside of the boiler is referred to as heat loss due to boiler ash sediment.

Combustion Equipment

During the development of boilers, the type of fuel significantly impacts the furnace and combustion equipment. Therefore, it is not only necessary to develop various furnace types to accommodate the combustion characteristics of different fuels but also to enhance combustion efficiency for energy conservation. Furthermore, technological improvements in the furnace and combustion equipment require minimizing pollutants (*oxides and nitrogen oxides) in the boiler exhaust as much as possible.

Mechanized Grate

Early potshell boilers used fixed grates, predominantly burning high-quality coal and wood, with manual operations for coal addition and slag removal. With the introduction of the straight tube boiler, mechanical grates began to be adopted, with chain grates becoming widely used. Under-grate air supply evolved from a non-segmented "uniform storage air" to segmented air supply. Initially, the firebox was low and inefficient in combustion. 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

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

Direct Current Burner

Early coal powder furnaces used U-shaped flames. The coal powder gas stream ejected by the burner first descends in the furnace chamber before turning and ascending. Later, a swirl-type burner arranged on the front wall emerged, forming an L-shaped torch in the furnace chamber. As the boiler capacity increased, the number of swirl-type burners also rose, which could be arranged on both sides of the walls or on the front and rear walls. Around 1930, a straight-flow burner was introduced, positioned at the four corners of the furnace chamber and mostly in a circular combustion pattern.

Fuel boiler

Post-World War II, with oil prices low, many countries began widely using oil-fired boilers. The automation level of oil-fired boilers is easy to enhance. After oil prices rose in the 1970s, many countries shifted back to utilizing coal resources. At this time, the capacity of power plant boilers also increased, requiring combustion equipment not only to burn completely and ignite stably, operate reliably, and have good low-load performance, but also to reduce pollutants in the exhaust smoke.

In coal-fired (especially lignite-fired) power plant boilers, the use of staged combustion or low-temperature combustion technology, 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, which is a type of low-temperature combustion, can not only combust solid fuels with very high combustible ash but also add limestone to the boiling bed for desulfurization.

Gas Boiler

Boilers were once a symbol of the industrial age, but as time has passed, these relics of the old industrial era are hard-pressed to fully meet the needs of modern enterprises. So, how should boiler companies plagued by diseases find a solution? Gas boilers can help you out!

Generally, common issues with boilers include being costly and environmentally unfriendly, posing high safety risks, requiring dedicated management due to large space needs, and being麻烦 to operate with various safety permits required. Using a gas hot water heater can address all these issues. Firstly, regarding cost and environmental concerns, gas boilers use combustible gases with zero 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 specialized staff, and run automatically with just a button press. Since they are not coal-fired boilers, no safety permits are needed.