What are the automatic protections of circulating fluidized bed boilers

The performance of refractory and wear-resistant materials is extremely important to ensure the safe and reliable operation of circulating fluidized bed boilers. In the dense phase area of the circulating fluidized bed boiler, the inner surface of the cyclone separator and the recycler is generally laid with phosphate glued plastic castables, high-alumina refractory bricks, glued silicon nitride and silicon carbide and other wear-resistant castables. The refractory coverage starts with the air distribution board and extends to the junction of the vertical and inclined walls in the combustion chamber.

In the turning and inclination of the heating surface of the inner screen of the furnace and the opening of the furnace, the unevenness of the flow direction of the bed particles will also cause wear. When the flue gas collects at the furnace outlet, the non-directional particles it carries will inevitably cause a certain degree of wear to the place, so there is a refractory protective layer on both sides, the upper and lower parts near the outlet. The wear is more severe at the bottom of the superheating and evaporation screens, where it is bent and perpendicular to the flow direction of the flue gas, and this area is also covered with wear-resistant refractory materials.

In addition, spraying can be applied to the water-cooled pipe wall in the dilute phase area to prevent wear and corrosion. The main mechanism is that the coating will form a dense, hard, and chemically stable oxide layer at high temperatures, and the combination of this oxide layer and the matrix is very strong; The hardness of the coating is greater than the hardness of the substrate. Some parts of the boiler are not composed of pressure parts, nor are they cooled by circulating water or steam, but are exposed to high temperature environments and are exposed to high-speed flowing flue gases, such as steel plate structure J valve recycler, cyclone separator outlet flue, etc.

In these areas where there is no heat conduction, two layers of refractory and wear-resistant materials are laid, of which the insulation layer is closest to the outer metal plate, and the wear-resistant refractory layer is close to the flue gas channel.

Automatic protection includes: motor interlocking, parameter interlocking, induced air frequency conversion, temperature and pressure detection, emergency trip protection, etc.

The boiler is a kind of energy conversion equipment, the energy input to the boiler is chemical energy and electrical energy in the fuel, and the boiler outputs steam, high-temperature water or organic heat carrier with a certain thermal energy. The original meaning of pot refers to a container of water heated on a fire, and a furnace refers to a place where fuel is burned, and a boiler includes two parts: a pot and a furnace. The hot water or steam produced in the boiler can directly provide the required heat energy for industrial production and people's lives, and can also be converted into mechanical energy through steam power devices, or converted into electrical energy through generators.

The boiler that provides hot water is called a hot water boiler, which is mainly used in life, and there are also a small number of applications in industrial production. The boiler that produces steam is called a steam boiler, often referred to as a boiler, and is mostly used in thermal power stations, ships, locomotives and industrial and mining enterprises.

In addition to the furnace pressure, drum water level, steam pressure, FSSSS, and fan interlock protection commonly used in pulverized coal furnaces, there are also bed temperature, fluidized air volume, cyclone separator outlet flue gas temperature protection, etc.

Furnace monitoring (furnace temperature protection), main fuel tripping (loss of all supply fans or induced draft fans, high furnace pressure, high bed temperature or furnace outlet temperature, low bed temperature or no fire), positive and negative pressure overrun of furnace and flue gas duct.

Motor interlocking, parameter interlocking, induced air inverter, explosion-proof door.

Summary. The function of recirculating fluidized bed boiler desuperheating water is to convert the thermal energy of the boiler into low temperature thermal energy, thereby reducing the temperature of the boiler. Workaround:

1.First, a circulating fluidized bed is installed at the outlet of the boiler, which is used to convert the thermal energy of the boiler into low-temperature thermal energy, thereby reducing the temperature of the boiler. 2.

Secondly, a cooler is installed at the outlet of the circulating fluidized bed, which is used to convert the thermal energy of the circulating fluidized bed into low-temperature thermal energy, thereby reducing the temperature of the boiler. 3.Finally, a water pump is installed at the outlet of the cooler to convert the thermal energy of the cooler into thermal energy at low temperatures, thereby reducing the temperature of the boiler.

The above is the role of circulating fluidized bed boiler desuperheating water and its solution. The function of circulating fluidized bed boiler desuperheating water is to convert the thermal energy of the boiler into low-temperature thermal energy, thereby reducing the temperature of the boiler. The solution is to install a circulating fluidized bed at the outlet of the boiler, a cooler at the outlet of the circulating fluidized bed, and a water pump at the outlet of the cooler to reduce the temperature of the boiler.

The function of recirculating fluidized bed boiler desuperheating water is to convert the thermal energy of the boiler into low temperature thermal energy, thereby reducing the temperature of the boiler. Workaround:1

First, a circulating fluidized bed is installed at the outlet of the boiler, which is used to convert the thermal energy of the boiler into low-temperature thermal energy, thereby reducing the temperature of the boiler. 2.Secondly, a cold dwarf is installed at the outlet of the circulating fluidized bed, which is used to convert the heat energy of the circulating fluidized bed into low temperature heat energy, so as to reduce the temperature of the boiler.

3.Finally, a water pump is installed at the outlet of the cooler to convert the thermal energy of the cooler into low-temperature thermal energy, thereby reducing the temperature of the boiler. The above is the role of circulating fluidized bed boiler desuperheating water and its solution.

The function of circulating fluidized bed boiler desuperheating water is to convert the thermal energy of the boiler into low-temperature thermal energy, thereby reducing the temperature of the boiler. The solution is to install a circulating fluidized bed at the outlet of the boiler, a cooler at the outlet of the circulating fluidized bed, and a water pump at the outlet of the cooler to reduce the temperature of the boiler.

Excuse me, but please go into more detail?

The function of circulating fluidized bed boiler desuperheating water is to convert the heat energy in the boiler into hot water, thereby reducing the temperature in the boiler. When the temperature in the boiler rises, the circulating pump transports the hot water from the boiler to the cooler, and the cooler cools the hot water, and then transports the cooled water back to the boiler, thereby reducing the temperature in the boiler. In addition, circulating fluidized bed boiler desuperheating water prevents the temperature inside the boiler from getting too high, thus preventing damage to the boiler.

In addition, circulating fluidized bed boiler desuperheating water can also improve the efficiency of the boiler, reduce fuel consumption, and thus save energy. In a word, the function of circulating fluidized bed boiler desuperheating water is to reduce the temperature in the boiler, prevent damage to the boiler, improve the efficiency of the boiler, reduce fuel consumption, and thus save energy.

Summary. 1.The function of circulating fluidized bed boiler desuperheating water is to transfer heat energy from the combustion chamber to the desuperheated water, thereby reducing the temperature of the combustion chamber.

2.Circulating fluidized bed boiler desuperheating water also transfers thermal energy to hot water pipes, providing hot water**. 3.

Circulating fluidized bed boiler desuperheating water also transfers thermal energy to the steam pipes, providing steam**. 4.Circulating fluidized bed boiler desuperheating water also provides cooling water by transferring heat energy to the cooling water pipes.

1.The function of circulating fluidized bed boiler desuperheating water is to transfer heat energy from the combustion chamber to the desuperheated water, thereby reducing the temperature of the combustion chamber. 2.

The circulating spring fluidized bed boiler desuperheated water can also transfer heat energy to the hot water pipeline, thereby providing hot water. 3.Circulating fluidized bed boiler desuperheating water also transfers thermal energy to the steam pipes, providing steam**.

4.Circulating fluidized bed boiler desuperheating water also provides cooling water by transferring heat energy to the cooling water pipes.

I'm sorry I don't understand, but can you elaborate on that?

The function of circulating fluidized bed boiler desuperheating water is to convert the thermal energy of the boiler into hot water for cooling and heating. The problem of desuperheating water is mainly due to the accumulation of dirt and scale inside the boiler, which causes the water flow rate to slow down, which affects the effect of desuperheating water. The solution is Kei Koreda:

1.Clean the inside of the boiler regularly to remove dirt and scale to maintain the water flow rate. 2.

Check the temperature inside the boiler regularly to ensure the effectiveness of the desuperheated water. 3.Check the water level inside the boiler regularly to ensure the effectiveness of the desuperheated water.

Personal Tips:1Check the temperature inside the boiler regularly to ensure the effectiveness of the desuperheated water.

2.Check the water level inside the boiler regularly to ensure the effectiveness of the desuperheated water. 3.

Clean the inside of the boiler regularly to prevent the build-up of dirt and scale, which can affect the effectiveness of the desuperheating water. 4.Check the temperature inside the boiler regularly to ensure the effectiveness of the desuperheated water.

The role of circulating fluidized bed boiler desuperheating water is to convert the heat energy of the boiler into hot water for cooling and heating. Its working principle is to circulate hot water from the inside of the boiler to the outside, so as to convert the heat energy into hot water, and achieve the purpose of desuperheating from the macro prudence.

In the circulating fluidized bed boiler combustion system, the main equipment and auxiliary equipment are as follows:

Main equipment: 1. Circulating fluidized bed furnace.

The circulating fluidized bed furnace is the core equipment of the whole system, including the furnace, bed, circulating blower and make-up system. It is responsible for burning fuels, generating heat energy, silently holding and circulating through the bed to achieve a circular flow of combustion products and solid particles.

2. High-efficiency settler (separator).

High-efficiency settlers are used to separate solid particles and combustion products from the bed and return them to the circulating bed. This helps to improve combustion efficiency, prevent solid particle emissions, and maintain relative stability in the furnace.

Auxiliary equipment: 1. a blower.

The blower is responsible for providing the oxygen and gas power required to the circulating fluidized bed furnace to promote the suspension and flow of solid particles in the bed, and to maintain the stability of the bed velocity and gas-solid two-phase flow.

2. Pre-burner and burner.

Pre-burners and burners help to achieve combustion reactions in circulating fluidized bed furnaces. The pre-igniter is responsible for mixing and preheating part of the fuel and air to provide suitable conditions for the combustion. The burner is responsible for introducing the preheated mixture into the furnace chamber and igniting the fuel.

3. Flue gas purification equipment.

Flue gas purification equipment is used to remove solid particulate matter and pollutants from combustion exhaust gas to prevent pollution to the environment. Common flue gas cleaning equipment includes dust collectors, desulfurization equipment, and denitrification equipment.

4. Waste heat **.

The waste heat ** device is used to improve the thermal efficiency of the boiler by heating energy from the flue gas. With waste heat**, a portion of the waste heat can be converted into useful heat energy that can be used to supply the hot water or steam needed by the boiler.

In addition, there are some auxiliary equipment, such as water supply systems, conveying systems, sewage systems, etc., which are used to provide water sources, convey fuel and solid particulate matter, discharge wastewater, etc. These equipment play an important role in the stable operation and efficient utilization of circulating fluidized bed boilers.

It should be noted that the specific equipment composition and configuration of the circulating fluidized bed boiler combustion system may vary depending on the manufacturer and application needs. During the design and use process, appropriate equipment should be selected and configured according to the specific situation to ensure the safety, reliability and economy of the system.

Summary. Hello dear Not only fluidized bed boilers, modern boilers have screen superheaters.

The so-called superheater is to further heat the saturated steam to form superheated steam. The screen superheater is only a form of arrangement of the superheater, and the screen superheater is to suspend the whole combination of superheater tubes above the boiler near the outlet (flame angle), mainly absorbing convection and radiant heat.

What is the concept of circulating fluidized bed boiler superheater.

Hello, I have seen your question and am sorting out the answer, please wait a while Hello Dear Not only fluidized bed boilers, but modern boilers have screen shouts or superheaters. The so-called superheater is to further heat the saturated steam to form a superheated mass to vaporize the steam. The screen superheater is only a form of arrangement of the superheater, and the screen superheater is to suspend the whole combination of superheater tubes above the boiler near the outlet (flame angle), mainly absorbing convection and radiant heat.

Hurry up. Hello dear The steam that enters the steam turbine to do work must be steam with a certain amount of superheat. What comes out of the boiler and furnace steam drum is dry drum and steam, which enters the superheater and is further heated to increase the superheat to become a new steam that meets the requirements.

Hello dear please how else can I help you.