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河北省泊头市四营开发区 Address: Siying Development Zone, Botou City, Hebei Province
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Desulfurized limestone powder conveying system
Zhongyu Ruiguang Machinery actively explores new directions for the future development of the desulfurization limestone powder conveying system industry. The limestone powder pneumatic conveying system for the main product of calcium spray and desulfurization in power plants is not only extremely versatile, but also has obvious advantages over warehouse pumps. Level. In addition, the company has increased investment in scientific research and improved innovation capabilities, and has developed a large number of advanced power transmission equipment such as calcium spray desulfurization furnaces for power plants, which are suitable for pneumatic transportation of fly ash and pneumatic transportation of limestone powder. Many businesses praise.
China strictly controls the S02 emission index in the atmosphere of power plants. Desulfurization technology is required for power plants with high sulfur content in coal. There are two commonly used desulfurization methods: one is to use a circulating fluidized bed boiler with limestone powder burned in the boiler; the other is to set up a separate flue gas desulfurization system behind the flue. The limestone powder pneumatic conveying pump is a technology that uses air flow as a carrier medium to convey particles and powdery materials under certain conditions. Ruiguang desulfurization limestone powder conveying system uses Roots fan as the power source, adopts the principle of air source jet, and uses the ejection effect of high-speed air to convey powdery materials. During the transportation of such systems, the air density changes little and the system pressure loss is small. When the Roots fan is running, the air volume can be kept substantially unchanged. When the pipe resistance increases, the outlet pressure increases, which makes it difficult to cause pipe blockage.
Desulfurized limestone powder and granules pay attention to the following points :
1. Because the limestone powder has a higher bulk density than fly ash, according to the experience of use, it is recommended to use the calcium spray desulfurization-limestone powder conveying equipment.
2. Limestone powder granules are susceptible to moisture in the cold state. Pay attention to moisture-proof measures in the design. Storage buckets should be kept warm, and hot air should be passed to the bottom of the powder warehouse to prevent moisture from agglomerating.
3. Limestone powder and granules, the dispersion of the particle distribution is large, the large size is about 2mm, the small size is about 50tan or less, the suspension velocity gradient is large, which makes it difficult to select the wind speed of the conveying pipe, and even causes pipeline Clogging.
4. It is necessary to fully consider the difficulty of pneumatic conveying of limestone powder and granules. In the design of the conveying speed, the mixing concentration ratio, the gas consumption, and the output, there must be a margin or an appropriate increase.
Desulfurization limestone powder conveying system in power plant furnace
1. Scope of application:
The desulfurization limestone powder conveying system in the power plant furnace is suitable for the desulfurization of limestone powder in circulating fluidized bed boilers of small and medium coal-fired power plants.
2. Main functions:
The desulfurizing agent limestone powder required for desulfurization in the furnace is metered, transported, powder feed volume adjusted, and sprayed in the furnace by a metering device (optional) and a desulfurization injection pump through a powered air source, pipeline, and distributor. The limestone powder is calcined and decomposed in the furnace, and the generated CaO reacts with the SO2 in the flue gas in the furnace to remove most of the SO2 in the flue gas to achieve desulfurization in the furnace.
3. Core equipment:
Calcium spraying desulfurization-limestone powder conveying equipment desulfurization injection pump has the characteristics of continuous feeding, stable transportation, and few wearing parts. In addition, the reasonable configuration of the system's air volume, air pressure, and pipes will have a crucial impact on the stable operation of the system.
4. System Features:
The desulfurization limestone powder conveying system in the power plant furnace has the advantages of simple configuration, low investment, low energy consumption, low operating costs, simple operation and maintenance, high degree of automation, and high desulfurization efficiency.
Gongyi Ruiguang Machinery Factory specializes in producing various desulfurization injection pumps, pneumatic conveying equipment, powder conveying equipment, and reliable performance, which you can trust.
Advantages of Ruiguang Desulfurized Limestone Powder Conveying System
(1) Roots fan is used as power, with less investment, stable operation, low maintenance, free from interference of condensate and oil pollution, and can run continuously for a long time.
(2) The system layout is simple, without any intermediate links and equipment. Reduced equipment maintenance and repair costs.
(3) The control and adjustment are simple, and the delivery volume of the desulfurization injection pump is adjusted by the material level control and manual adjustment device.
(4) Roots fan outlet pressure is generally only 0.04 ~ 0.1MPa, the motor power is small, and the cost is low.
(5) Low pressure conveying, the equipment has good sealing performance and reliable operation.
The working principle of the conveying equipment in the calcium spray desulfurization furnace of the power plant firstly, the injection pipe introduces air or air and material mixture into the air nozzle. The nozzle converts the pressure energy of the air into the kinetic energy of the air, and uses the ejection of the air flow to cause local negative pressure near the outlet of the nozzle.
Established in the early 1990s, Ruiguang Machinery has accumulated rich experience in the design, manufacturing, installation and operation of pneumatic conveying, desulfurization and injection of calcium, blast furnace coal injection, and industrial furnace petroleum coke powder injection and combustion systems. Phone: 0371-64359668, Website: http://zcgywhs.com