Oil fired and gas fired boilers are used in the home to compare aspects of which operation

Households that use gas are still less economical than fuel, and they are environmentally friendly, and those with a large number of homes can also support it. Now Europe is also pushing for oil-gas dual fuel.

In addition to considering the selection of oil-fired boilers according to the principle of combining technology and economy, the intention of the owner should also be comprehensively considered, and the opinions of the environmental protection, fire protection and labor departments should be combined to focus on safety and environmental protection. Here are a few selection principles to pay attention to:

1. It should be automated, safe and secure, and have reliable automatic control and protection devices.

2. Choose a boiler product manufacturer with good reputation and good after-sales service.

3. The performance of the boiler should be consistent with the characteristics of the user's heat and steam, and the adaptability should be good. When there is a large change in user load, the sensitivity should be high, the tracking should be fast, and the pressure should be stable.

4. Depending on the location and requirements of the boiler layout, choose vertical or horizontal boiler.

5. Depending on the user's steam supply time requirements, you can choose a fast boiler, which can generally supply steam in 3-5 minutes.

6. The user is required to provide the load curve in order to verify the output and performance of the selected boiler.

I don't know if you have enough sun, but you can also consider solar energy, but in winter, it has a big impact.

Use gas, the cost is lower, and it is technically easy to operate, and the specific cost depends on how much area it has!

If gas is available, it is best to use a domestic gas boiler.

The cost of fuel is too high for the average family to afford to burn.

The direct differences and advantages of gas boilers and coal-fired and oil-fired boilers In the design and construction of boiler rooms, it is necessary to pay attention to the establishment of gas detection systems and leakage alarm systems, to have good ventilation facilities, to strictly detect leaks for gas transportation pipelines, and to use explosion-proof electrical appliances in the boiler room to avoid accidents as much as possible.

Oil-fired or gas-fired boilers.

The biggest difference between a room and a coal-fired boiler room is:

1. The area is different, and the boiler room of the same capacity is more than 50% smaller than that of coal, including the area of the coal-fired preparation system, dust removal and slag removal system, flue gas system, etc. Coal yards are not included, as oil-fired boilers also have oil storage tanks. Civil construction costs will be reduced by 50% in the Northeast region;

2. The environmental conditions are different, because the oil-fired boiler does not generate dust, the environmental conditions of the boiler room are greatly improved;

3. The boiler room does not need to consider sound insulation and noise reduction in the design;

4. However, in the design of the boiler room, the explosion-proof system should be adopted in the oil-fired boiler room.

The biggest difference intuitively I think is the following:

1. Hygiene: the oil-fired boiler room is clean, and the coal-fired boiler room is very dirty;

2. Emission: There is no black smoke emitted from oil-fired gas boilers, and there is generally black smoke from coal-fired boilers;

3. Operation: The operation of oil-fired gas boiler is simple, and the operation of coal-fired boiler is complex (slag removal and ash removal are also required);

4. Maintenance: Oil-fired boilers are easy to overhaul, and coal-fired boilers are complex (there are many projects);

5. Investment: small investment in oil-fired gas boilers and large investment in coal-fired boilers;

6. Operating costs: The operating costs of oil-fired gas boilers are high, and the operating costs of coal-fired boilers are low.

Cost performance is a very important factor, coal is cost-effective, not fuel gas!

The replacement of coal with natural gas will revolutionize the fuel mix of industrial and heating boilers.

Gas-fired boilers have the following advantages over coal-fired boilers:

1. The gas boiler does not need a coal ash stacking place, which saves land. Clause.

2. Save water for boiler auxiliary production. The normal production water of coal-fired boilers and gas-fired boilers is equal, but gas-fired boilers save auxiliary water used by coal-fired boilers for dust removal, slag removal and other dust prevention. Clause.

3. Reduction of staff. Gas-fired boilers have less auxiliary equipment than coal-fired boilers, require fewer staff, and bear much less wages and benefits. Clause.

Fourth, save the cost of boiler production electricity. The gas boiler has less fuel transportation and other auxiliary equipment, small power and short continuous operation time, so the power consumption is low and the cost is relatively low. Clause.

Fifth, reduce labor intensity. Coal-fired boilers require high-intensity physical labor in the process of coal transportation and slag removal, while gas-fired boiler workers have less labor intensity. Clause.

6. The gas boiler room is flexibly arranged, covers less area, and produces low noise. Clause.

7. Improve the environment. Coal-fired boilers produce a lot of smoke and dust when they are running, which causes great pollution to the environment, while natural gas is a clean energy source that greatly improves the environment.

1. Clean and environmentally friendly. Natural gas boilers have low emissions of sulfides, nitrides, and dust, much lower than coal-fired boilers.

2. High degree of automation. All configurations of natural gas boilers are easy to automate, and the degree of automation is high.

3. The labor intensity of boiler workers is small.

The biggest advantage is that it has less emissions and is relatively environmentally friendly, so Beijing has gradually replaced coal-fired boilers with gas-fired boilers as winter heating boilers.

Gas boilers have a lot of investment and high operating costs – but are relatively clean. The operation labor cost is small.

Coal-fired boilers have a small investment and low operating costs – but are dirty. The operation labor cost is large.

Environmental friendliness is the main advantage and requires fewer operating personnel. Higher running costs, which are disadvantages.

1. Establish an economic operation management system: The user unit of the gas boiler shall establish a corresponding economic operation management system for the boiler.

Boiler water saving and energy saving: Variable speed device should be used for boiler feed water pump. The heat of the continuous sewage discharge of the boiler should be used reasonably, and the continuous sewage expander should be set according to the total amount of continuous sewage discharge in the boiler room 2. The cooling water of the fan bearing of the boiler and the cooling water of the water pump bearing should be recycled as much as possible.

3. The gas boiler and its system should eliminate running, dripping, emerging, and leaking, make full use of the heat of condensate, secondary steam and continuous sewage discharge, and adopt key transportation measures to improve the utilization rate of condensate as much as possible.

4. Operating load: This series of gas boilers can operate normally under 80% 100% load, and the low-level calorific value of natural gas is 35438kJ nm3, the low-level calorific value of city gas is 16750kJ nm3, and the calorific value of light diesel oil is 42917 kJ kg. When the gas boiler is running, the design fuel or the fuel with a similar design fuel should be selected.

5. Reasonable layout of the boiler room system: The layout of the boiler room should fully improve the energy utilization efficiency, reduce electricity, water, self-consumption heat and other consumption, and promote the utilization of heat energy and cascade under the premise of ensuring safety performance. When the equipment of the boiler room is arranged, the length of the pipes, flue air ducts and the number of elbows should be minimized to reduce the flow resistance.

Fuel Basics:

1. Characteristics of gaseous fuels:

1) Good usability.

It is easy to mix with air during the combustion process, the exhaust smoke loss is small, and the boiler efficiency is high; The fuel contains less sulfur and ash, and there will be no high-temperature coking and corrosion on the heating surface; The flue gas velocity is high, the overall volume of the boiler is small, and the metal consumption of the boiler is low;

2) Flexible adjustment performance.

The calorific value of the gas is easy to adjust and can be used in the blending of two fuels; The same boiler can be used for multiple fuels; It has a strong ability to adapt to heat load fluctuations, and it is easy to realize combustion regulation;

3) Low environmental pollution.

Do not break when used directly, and the operation occasion is relatively quiet; The ash and sulfur content is much lower than that of coal and oil-based fuels; When the gas is combusted, it will not produce a large amount of ash that needs to be treated when burning coal; Low pollution to the soil; The dust content in the flue gas is low, and the air pollution is small; The main pollutants are nitrogen oxides produced during combustion;

4) Easy to transport and use.

It is mainly pipeline transportation, and there is no pollution such as sprinkling and noise during vehicle transportation; Direct use, no need to crush before coal burning;

Main disadvantages: Many components in gas contain toxicity, such as SO2, NO, CO, H2S, etc.; After mixing with air in a certain proportion, it will form a ** gas, in case of open flame, perfect safety measures should be taken when combusting;

2.Features of oil-based fuels:

In addition to the above, atomization is required before combustion; Heavy oil also needs to be heated.

Main fuel for oil and gas boilers:

1.Boiler Appearance:

2.Drawings (body part):

Drawings (post-installation whole):

3.Main structural features:

Generally, micro positive pressure combustion is adopted, and there is no need to configure an induced draft fan;

Suitable for fuel oil or high calorific value gas (QDW 16000kJ Nm3);

The structure is simple, the manufacturing is convenient, the installation period is short, and the maintenance cost is low;

The requirements for boiler water quality are low and the water volume is large;

The boiler capacity is generally 20t h;

General user types: hospitals, schools, hotels, government agencies, pharmaceutical industry.

Structurally several nouns (return, pot shell, tube sheet, furnace sleeve, smoke pipe, return combustion chamber).

1.Backhaul. Definition: The flue gas flows from one end of the boiler to the other.

Classification: Fire-tube boilers can be divided into according to the number of flue gas returns.

The second, third, fourth, and fifth returns, the second and fourth returns are in the front, and the five-return structure is too complex, and most of them are three-way trips. In recent years, two round-trips have become increasingly popular.

Pot shell (or pot cylinder, cylinder, etc.):

Definition: A cylindrical pressure vessel that serves as the shell of a boiler steam space.

Function: There is water and saturated steam in the pot shell, various valve seats are arranged on the pot shell, and there are steam-water separation and feed water distribution pipes inside.

Tube sheet: Function: It is the sealing part of the pot shell.

Classification: There are two forms of tube sheet: flat tube sheet and wrenched tube sheet, the former one is fillet welded with the pot shell, and the latter is butt welded. From the perspective of force, the wrench structure is better than the fillet weld structure.

Name: There are four types of tube sheets: front, back, inner front and inner back. There are many openings in it for the installation of smoke pipes, hence the name.

Furnace Tank: Function: The boiler bears external pressure.

Scope of application: civil: steamed soybean milk, snacks and other soups, small laundry for ironing; Industrial:

Steam for small garment factories and chemical production lines; supporting food machinery, medical machinery, chemical machinery; tea fermentation; Wait a minute. Laboratory use: small amount of steam for laboratory use; For hospitals:

Medical machinery disinfection, drug disinfection, etc. Engineering Maintenance: Bridges.

Maintenance and care of concrete surface of roads and bridges. Safety: combustion in the furnace, no open flame outside the furnace, made of high-quality tanks, fully automatic interlocking control, safe and reliable; Energy saving:

The burner imported from Europe is adopted, with low fuel consumption and thermal efficiency of more than 95%; Environmental protection: no black smoke, low noise, no environmental pollution, clean and environmentally friendly; Convenient: Fully automatic combustion and water level control, automatic detection of burner failure.

1. Power generation: LNG is efficient and economical, in power generation, the thermal energy utilization rate of natural gas can reach 55%, which is higher than that of oil and coal, especially for peaking power plants, the advantages of natural gas replacing fuel oil are very obvious For power generation is currently the most important industrial use of LNG. 2. Ceramic, glass and other industries:

Some enterprises with large energy consumption are often far away from the city or natural gas pipelines, or they cannot get the natural gas transported by pipelines at all, in this case, the advantages of LNG are more obvious The most typical is the ceramic factory, the use of LNG can improve the product grade and reduce the cost Used in glass, ceramic manufacturing and petrochemical and building materials industry (alkali-free glass cloth), it can greatly improve the quality of products or reduce costs, so as to become a new benefit growth point for related enterprises due to the change of fuel or raw materials.