At present, the concrete water-reducing agent industry commonly uses two main drying methods: rotary (centrifugal) spray dryers and air-flow spray dryers. The rotary spray dryer operates by atomizing the feed liquid using a rotating atomizer located at the top of the tower. The liquid is then exposed to hot air flowing in the same direction, allowing for rapid evaporation and the formation of a fine powder. On the other hand, the air spray dryer utilizes compressed air or steam as the atomizing medium. A two- or three-fluid nozzle positioned beneath the drying tower breaks the feed liquid into droplets, which mix with the hot air entering from the bottom. The resulting gas-powder mixture exits from the top of the tower and enters a separation system, where the solid particles are collected. Both systems have their own advantages and limitations.
Rotary spray dryers offer high production capacity, typically ranging from 1000 to 20,000 tons per year. They also provide good thermal efficiency, uniform particle size, excellent solubility, and stable operation. However, they require significant initial investment, take up a large area, and demand regular maintenance. In contrast, air spray dryers are more compact, have lower capital costs, and are easier to maintain. Their drawback lies in smaller output, usually below 3,000 tons per year, higher energy consumption, and less consistent product quality.
In terms of heat sources, many manufacturers use coal-fired high-temperature flue gas, which can reach temperatures between 300°C and 420°C, offering high thermal efficiency. To improve product solubility, some companies opt for clean hot air generated by hot air furnaces. Coal-fired furnaces come in various forms, such as hand-fired, chain grate, or mechanized systems, depending on the manufacturer's needs. Smaller, less automated operations often use hand-fired furnaces due to their low cost, while larger facilities may choose automated options like mechanical stokers for better efficiency and ease of operation. Our company also offers alternative heating solutions, including oil and gas burners.
Jinan Aonuo Energy Technology Co., Ltd. specializes in producing 10,000 tons/year naphthalene-based water-reducing agent spray drying systems. We use rotary spray dryers that feature a well-designed system, low power consumption, high automation, and an open-air layout that reduces civil construction costs and improves the working environment. The company provides comprehensive turnkey services, including design, fabrication, installation, commissioning, and staff training. We have successfully supplied several complete sets of equipment to clients in Shandong Laiwu, Nanjing, Jiangsu, Jinan, and Tianjin Lijian. Our technology is advanced, reliable, and has received widespread praise from customers.
Tube Sheet
Tube sheet are usually made of a round flat plate with holes drilled into the plate to accommodate tubes in the exact location and pattern relative to each other. The tube sheet is used to support and isolate the tubes in the Shell And Tube Heat Exchanger.
A tube sheet is a plate used to support a tube in a shell and tube heat exchanger. The tubes are aligned in a parallel manner and are supported and held in place by the tube plate. A tube sheet is a round plate with holes in it so that the tube can fit through the opening. Tubes are usually made of round, flat metal sheets. Drill holes for pipe ends in precise locations and patterns relative to each other. The tube plate is made of the same range of materials as the pipe.
These are usually made of mild steel and vary in thickness according to fluid pressure. Depending on the final application (petrochemical, nuclear, oil and gas, etc.), the tubes can be clad in stainless steel or other superalloys, or even made entirely of stainless steel or superalloys.
Tube Sheet,Boiler Tube Sheet,Floating Tubesheet,Exchanger Tube Sheet
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