The structure of the characteristic biomass fuel hot water boiler
Release time:
2021-09-02
I hope that through the introduction of this article, you can have a certain understanding and understanding of the scope of application of the oven. The following is a brief introduction to the relevant contents with the experts of Yichang Yingjia Metal Products Co., Ltd.
Also known as electric oven, electric fire barrel, foot warmer and so on! Can be widely used in residential, office, hotel, hospital, school, simple activity room and other types of civil and public buildings. It is mainly in the form of far infrared radiation and heat diffusion. Type characteristics
Solid wood oven
The external structure is all made of authentic fir or logs, durable, waterproof, anti-corrosion, anti-vibration, moisture-resistant, and with bursts of wood fragrance.
Solid wood oven
Solid wood oven
Particleboard oven
The external structure is all made of authentic particleboard, which is durable, anti-corrosion, anti-vibration, beautiful and fashionable. The disadvantage is not waterproof, do not put the tide!
Dark fire oven
The internal use of unique heating wire, heating no fire, no infrared light, heating time is relatively slow, soft heat, safe and stable long service life! The external structure is all made of authentic fir or logs, durable, waterproof, anti-corrosion, anti-vibration, moisture-resistant, and with bursts of wood fragrance. Ordinary oven
Internal use of traditional heating body, far infrared radiation, 1 second heating, thermal soft, automatic temperature control is very safe!
The external structure is all made of authentic particleboard, which is durable, anti-corrosion, anti-vibration, beautiful and fashionable. The disadvantage is not waterproof, do not put the tide!
The above is what Yichang Yingjia Metal Products Co., Ltd. explained to you. Yichang Yingjia Metal Products Co., Ltd. is mainly engaged in Hubei oven, oven desktop, energy-saving and coal-saving oven. If there are any local substances that are not well understood, the scope of application of the oven is our website: www.hbluju.com.
I recommend that you read this article:
Material hot water boiler as one of the main equipment burning biomass fuel, direct combustion of solid biomass pellet fuel, due to the fuel for biomass fuel and reasonable structure of such boilers basically achieve the effect of smokeless complete combustion emissions to meet environmental requirements with good economic, social and environmental benefits.
1. Biomass fuel
1.1 biomass fuel refers to the processing of crop wastes such as straw, rice husk, sawdust and sawdust into solid shaped fuel with a certain shape and high density through biomass compression molding technology.
After extrusion, the density of biomass raw materials can reach 1.1~1.4 tons/cubic meter, the energy density is equivalent to that of medium coal, and it is easy to transport and store. In the process of compression, physical changes are the main, and its elemental composition and microstructure are basically the same as the original material. The carbon content of various biomass fuels is concentrated in 35% ~ 42%, the hydrogen content is low, 3.82 ~ 5%, while the nitrogen content is less than 1%, and the sulfur content is less than 0.2, so the pollution level is very low. The volatile matter of biomass fuel is 60% ~ 70%, so the problem of volatile matter should be considered in the design of combustion equipment.
Combustion Characteristics of 1.2 Biomass Fuel
After the biomass fuel is formed by high pressure, the density is much greater than the original material, and the combustion is relatively stable. Although the ignition temperature has increased, the ignition performance is poor, but the ignition performance is better than that of coal. Since biomass fuel is a block fuel formed by high pressure, its structure and organizational characteristics determine that the escape speed and heat transfer speed of volatile matter are greatly reduced, but it is easier than coal. Therefore, the biomass fuel volatile characteristic index is larger than that of coal, and its combustion characteristic index is larger than that of coal. The combustion speed is moderate, which can make the heat released by the volatile matter be transferred to the heating surface in time, so that the heat loss of the exhaust gas is reduced; at the same time, the oxygen required for the combustion of the volatile matter is well matched with the oxygen diffused from the outside, the combustion wave is small, and the solid and the heat loss of the exhaust gas are reduced.
Material hot water boiler as one of the main equipment burning biomass fuel 2, biomass fuel hot water boiler
Structure of 2.1 biomass fuel hot water boiler
At present, China has a variety of types of biomass fuel hot water boiler, according to the fuel varieties can be divided into wood pellet boiler and straw pellet boiler, according to the application can be divided into household type and commercial type. The lower suction fixed double-layer grate water heater is a widely used structure, which fully considers the combustion characteristics of biomass fuel, and consists of furnace door, grate, furnace, heating surface, air chamber, dust chamber, furnace wall, exhaust pipe, flue, chimney and other main parts.
2.2 the working process of biomass fuel hot water boiler
Biomass fuel with a certain particle size is added to the grate through the upper grate door. According to the fuel characteristics that biomass is easy to catch fire, it will burn in a moment and carry out downward suction combustion under the guidance of the induced draft fan. The fuel debris and ash leaked from the upper grate continue to burn and burn to the bottom of the lower furnace, and then discharge through the ash outlet; the flue gas and part of combustible gas formed after the fuel is burned on the upper grate enter the lower furnace through the fuel layer and the ash layer to continue to burn, and together with the flue gas generated by the fuel on the lower grate, flow to the dust chamber and convection heating surface at the back through the outlet of high-temperature air flow, and enter the chimney to discharge to the outside after full heat exchange.
3. Energy-saving principle
According to the relevant combustion theory, the necessary conditions for maintaining the full combustion of fuel are to maintain sufficient furnace temperature, proper air volume and good mixing with fuel, and sufficient combustion time and space. Therefore, according to the characteristics of biomass fuel itself, combined with combustion theory, the energy saving analysis of boiler structure is carried out.
3.1 grate and hearth
The biomass fuel hot water boiler adopts a double-layer grate structure, I .e. a water-cooled steel tube grate is added to a certain height of the hand-fired grate, and its bent pipe is directly inserted into the upper drum. This design increases the heat absorption area of the water-cooled grate on the one hand, and accelerates the heat transfer between the grate and the return water in the drum on the other hand.
Fuel combustion adopts downdraft combustion mode. The molded fuel is preheated and burned on the upper grate by the upper furnace door. Due to the guidance of the fan, the new fuel will not directly encounter high-temperature superheated flue gas, which delays the concentrated precipitation of volatile matter, thus avoiding the fluctuation of furnace temperature and stabilizing the combustion. At the same time, the volatile matter must pass through the high-temperature oxidation layer, be fully mixed with air, and ignite and burn in the coke particle gap. After completing a combustion process, fuel debris and ash formed on the upper grate leak to the lower furnace and continue to burn until it burns out.
The double grate is used to realize the step-by-step combustion of straw briquette fuel, alleviate the burning speed of straw, achieve the matching of combustion oxygen demand and oxygen supply, make the straw briquette fuel stable and continuous complete combustion, and play a role in smoke elimination and dust removal while improving the fuel utilization rate.
Related News
Intelligent particle oven, the perfect combination of science and technology and ecology
Hubei Xinyi Furnace Technology Co., Ltd. is committed to providing global consumers with technological innovation and excellent quality stove products. Recently, a brand-new intelligent biological particle oven independently developed and manufactured by Xinyi stove team went on the market, perfectly integrating traditional technology with modern technology to create a comfortable and warm home environment for users.
Love baking stove true feelings warm people's hearts
Recently, affected by the strong cold air, the temperature has generally dropped. In order to ensure that the five-guarantee households, low-income households, orphans and other needy people in the jurisdiction can safely survive the cold winter, recently, Baiyangxi Township, Luxi County, joined hands with the State Civil Affairs Bureau to carry out the "Winter Send Warmth" activity to send the warmth of the party and the government to the needy people.
7 advantages of energy-saving stoves_heating stoves realize energy-saving advantages
Energy-saving stoves should be placed in a sheltered place, increase the wind ring, to prevent the flame from deviated from the bottom of the pot;
How to choose the structure principle of the baking stove
On December 12 last year, this newspaper reported four fires in half an hour, two caused by ovens. The reporter learned from the fire brigade that since the beginning of winter, the number of fire alarms in private houses has increased rapidly compared with the past, most of which are caused by stoves. Some are due to improper use, while others are related to the quality of the oven. Recently, when Mr. Liu, a citizen, bought a stove in Liuyang River Market, he found a stove that made him suspicious.
Matters needing attention in three major elements that affect the price of stoves
When it comes to the price of the equipment, the primary influencing factor is the use of the material of the equipment. The material of the equipment is the basis of the environmental adaptability, and it is also an important experience in the cost of the equipment manufacturing process. When using and designing energy-saving stoves, they tend to choose metal materials as the use objects. At the same time, the materials used around the various components of the equipment are also important factors affecting the cost. Material is also an important manifestation of equipment performance display, regardless of strength or sealing.
What are the preparations before the boiler operation? Yichang Yingjia Metal Products Co., Ltd. knows or understands the relevant information to analyze, so that you can have more knowledge of the industry besides Yichang Yingjia Metal Products Co., Ltd!