At present, the problems related to heat exchange in chemical systems are relatively prominent. The existing technologies have many disadvantages such as insufficient utilization of heat exchange area, unsatisfactory heat exchange efficiency, serious external scaling, large maintenance workload, and limited use conditions. How to realize energy saving, water saving and energy saving in heat exchange has become a puzzle for the chemical industry.
According to reports, Hebei Weili Refrigeration Equipment Co., Ltd. independently researches and develops a utility model evaporative condenser patented model ZNX. It adopts advanced internal and external fluid turbulence corrugated tubes to achieve high-efficiency heat transfer and is subject to petrochemicals. The favor of industry users. The product is mainly used to absorb the heat when the water evaporates, so that the ammonia or Freon vapor in the tube condenses. The cooling water is stored in the water tray at the bottom of the tank, and the float valve is used to maintain a certain water level. The cooling water in the water tray is pumped to the spray pipe and sprayed on the outer surface of the condensation pipe through nozzles to form a water film. Part of the water in the water film absorbs heat and evaporates into water vapor which is carried away by the air. Unevaporated water is still dripped back into the water tray. The refrigerant in the tube gradually condenses into a liquid. Air is drawn in through the grille and flows up through the coils. Saturated hot and humid air is vented to the surrounding atmosphere through the ventilator. This new type of evaporative condenser is equivalent to a combination of a shell and tube condenser, a cooling tower, a circulating water pump, a pool, and a pipeline, and has a compact structure and high efficiency.
The product has been widely used in the industrial refrigeration and food and beverage cold processing and refrigeration fields in the chemical, pharmaceutical and other industries. The new evaporative condenser uses advanced technologies such as thermodynamics and heat transfer engineering, and is an optimized combination of a cross-flow cooling tower and a conventional evaporative condenser. Using a special-shaped coil tube group structure that can increase the heat transfer coefficient inside and outside the tube, the fin tube pre-cooling technique and the uniform water distribution of the water distributor make the heat transfer per unit area greatly improved. The use of advanced and reasonable water distribution systems and elliptical tube pre-cooling technology makes the cooling water contact with the condensing coil at its limit, overcomes the dry point of the water film on the tube wall, and is prone to fouling on the tube wall.
The actual use proves that, besides the superior heat exchange performance, the evaporative condenser is excellent in corrosion resistance and anti-fouling performance, and has the advantages of water saving and electricity saving, and is an energy-saving product. Compared with the existing evaporative condenser, the evaporative condenser can improve the cooling efficiency by 15% to 20%; compared with the air-cooled or water-cooled condenser, it can save 80% of water, save 25% of electricity, and save steel for manufacturing above 50.
Shandong Feida Chemical Technology Co., Ltd. has a new ammonia evaporative condenser in the ammonia synthesis system for the actual cooling of the ice condenser with poor cooling effect. According to them, investment in equipment is 300,000 yuan, infrastructure investment is 5,000 yuan, investment in equipment platforms and pipelines is 45,000 yuan, and total project investment is 350,000 yuan. Under the condition of keeping the current of the ice machine unchanged, the temperature of the ammonia condenser of the synthesis system will be reduced, so that the net value of ammonia will be increased. With the same consumption, the output of ammonia will increase by 4 tons per day. According to the summer operation, the profit will increase by 1.12 million yuan.
According to reports, Hebei Weili Refrigeration Equipment Co., Ltd. independently researches and develops a utility model evaporative condenser patented model ZNX. It adopts advanced internal and external fluid turbulence corrugated tubes to achieve high-efficiency heat transfer and is subject to petrochemicals. The favor of industry users. The product is mainly used to absorb the heat when the water evaporates, so that the ammonia or Freon vapor in the tube condenses. The cooling water is stored in the water tray at the bottom of the tank, and the float valve is used to maintain a certain water level. The cooling water in the water tray is pumped to the spray pipe and sprayed on the outer surface of the condensation pipe through nozzles to form a water film. Part of the water in the water film absorbs heat and evaporates into water vapor which is carried away by the air. Unevaporated water is still dripped back into the water tray. The refrigerant in the tube gradually condenses into a liquid. Air is drawn in through the grille and flows up through the coils. Saturated hot and humid air is vented to the surrounding atmosphere through the ventilator. This new type of evaporative condenser is equivalent to a combination of a shell and tube condenser, a cooling tower, a circulating water pump, a pool, and a pipeline, and has a compact structure and high efficiency.
The product has been widely used in the industrial refrigeration and food and beverage cold processing and refrigeration fields in the chemical, pharmaceutical and other industries. The new evaporative condenser uses advanced technologies such as thermodynamics and heat transfer engineering, and is an optimized combination of a cross-flow cooling tower and a conventional evaporative condenser. Using a special-shaped coil tube group structure that can increase the heat transfer coefficient inside and outside the tube, the fin tube pre-cooling technique and the uniform water distribution of the water distributor make the heat transfer per unit area greatly improved. The use of advanced and reasonable water distribution systems and elliptical tube pre-cooling technology makes the cooling water contact with the condensing coil at its limit, overcomes the dry point of the water film on the tube wall, and is prone to fouling on the tube wall.
The actual use proves that, besides the superior heat exchange performance, the evaporative condenser is excellent in corrosion resistance and anti-fouling performance, and has the advantages of water saving and electricity saving, and is an energy-saving product. Compared with the existing evaporative condenser, the evaporative condenser can improve the cooling efficiency by 15% to 20%; compared with the air-cooled or water-cooled condenser, it can save 80% of water, save 25% of electricity, and save steel for manufacturing above 50.
Shandong Feida Chemical Technology Co., Ltd. has a new ammonia evaporative condenser in the ammonia synthesis system for the actual cooling of the ice condenser with poor cooling effect. According to them, investment in equipment is 300,000 yuan, infrastructure investment is 5,000 yuan, investment in equipment platforms and pipelines is 45,000 yuan, and total project investment is 350,000 yuan. Under the condition of keeping the current of the ice machine unchanged, the temperature of the ammonia condenser of the synthesis system will be reduced, so that the net value of ammonia will be increased. With the same consumption, the output of ammonia will increase by 4 tons per day. According to the summer operation, the profit will increase by 1.12 million yuan.
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