Selection of an evaporation concentration tank for solution purification and crystallization
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This post was last edited by kingberg on 2011-3-7 at 10:55. Selection of an evaporation concentration tank for solution purification and crystallization. An intermittent evaporation concentration tank used for solution purification and crystallization, which relies on steam jackets outside the tank for indirect heating during evaporation and concentration. There are some issues associated with making such equipment larger; that is, increasing the size of the tank may result in a longer concentration time, with only a slight increase in processing capacity. Is there any good way to increase the processing capacity of this equipment as well? For example, the amount of solution processed in the same time period increases from 10 tons to 20 tons or even 30 tons.
The problem lies in how to increase the heat exchange area on a comparable basis
The mature industrial practice is continuous production, which is a proven method for expanding output and reducing costs. We have carried out a lot of research and development as well as design work on these continuous crystallization production systems
I completely agree with the person in floor 2; it depends on how you manage to increase the area
Increasing the heat exchange area improves the heat transfer coefficient; therefore, shell-and-tube and plate-type evaporators are mostly used, as they offer a large area with a relatively small volume. Shijiazhuang Quartz Elite Chemical Machinery Co., Ltd
It is recommended to use MVR evaporation (concentration) crystallization equipment, which enables the processing of larger volumes of material without the need for steam, yielding significant results.
Reply to 6# Gugudao: Could you provide more details on this type of device? What are its advantages? Which is the manufacturer? Contact information, etc
According to the heat transfer equations, to increase the production load, one can consider increasing the heat transfer area, improving the heat transfer system, or increasing the temperature difference for heat transfer. The owner can focus on these three aspects; by increasing the heat load, it is possible to raise the evaporation load as well.
From the perspective of heat transfer equations, by increasing the heat transfer area, raising the heat transfer coefficient, and increasing the heat transfer temperature difference, the evaporation capacity can be enhanced once the heat load is increased.
Membrane evaporators are better and are widely used these days
This post was last edited by xxj5507 on 2011-9-8 at 16:00. Taking into account the characteristics of water quality in enterprises, with a treatment capacity of 5 tons per hour, a local steam price of 180 yuan per ton, and the equipment operating 24 hours a day for 330 days per year, it is estimated that about 0.3 tons of fresh steam are required to evaporate 1 ton of water using a three-effect evaporator. The energy consumption of such an evaporator is calculated as follows: 0.3 × 5 × 180 × 24 × 330 = 2,138,400 yuan. This represents the annual operating cost (without taking into account other expenses such as electricity consumption, wages for equipment maintenance staff, or the reuse of condensate water).
For the MVR evaporation system, the electricity consumption is around 30 kWh per year (with values ranging from 18 to 70 kWh depending on the properties of the material being processed); the local industrial electricity rate is 0.8 yuan per kWh. Thus, the annual operating cost for the MVR system is 0.8 × 30 × 5 × 24 × 330 = 950,400 yuan. By comparing these figures, it can be seen that using a MVR evaporation system saves 2,138,400 – 950,400 = 1,188,000 yuan per year compared to traditional multi-effect evaporators. Based on this cost savings, the investment cost of a MVR evaporator can be recovered within 1.5 to 2 years. Xu Xingjian: 13391738705, QQ: 838644225. Beijing Purenmeihua Energy Conservation and Environmental Protection Technology Co., Ltd. – a professional technology company based in China that specializes in the design, development, installation, and commissioning of MVR evaporation and concentration equipment
For the MVR evaporation system, the electricity consumption is around 30 kWh per year (with values ranging from 18 to 70 kWh depending on the properties of the material being processed); the local industrial electricity rate is 0.8 yuan per kWh. Thus, the annual operating cost for the MVR system is 0.8 × 30 × 5 × 24 × 330 = 950,400 yuan. By comparing these figures, it can be seen that using a MVR evaporation system saves 2,138,400 – 950,400 = 1,188,000 yuan per year compared to traditional multi-effect evaporators. Based on this cost savings, the investment cost of a MVR evaporator can be recovered within 1.5 to 2 years. Xu Xingjian: 13391738705, QQ: 838644225. Beijing Purenmeihua Energy Conservation and Environmental Protection Technology Co., Ltd. – a professional technology company based in China that specializes in the design, development, installation, and commissioning of MVR evaporation and concentration equipment