43- The feather leaf separator is used for anti-clogging separation of the secondary steam in salt-alkali solution concentration, evaporation, and crystallization units

It is understood that in the process of concentrating and evaporating saline-alkali solutions by soda and salt production enterprises, the techniques vary depending on the age of the equipment used. Some companies use vacuum concentration evaporation, while others employ non-vacuum concentration evaporation processes. Vacuum processes and non-vacuum processes have different requirements regarding the quality of the heating medium and evaporation equipment.

The vacuum evaporation process does not require a high temperature for the heat medium, but it features a fast evaporation rate, high efficiency, a large amount of secondary steam, and high gas velocity. Non-vacuum processes are the opposite: they require a high temperature of the heat medium, have a slow evaporation rate, low evaporation efficiency, and a not very high velocity of the secondary steam.

For secondary steam applications, some companies compress the secondary steam to increase its pressure and use it as a heating medium in subsequent evaporators, thereby making full use of the thermal energy contained in the secondary steam. In particular, companies that use MVR multi-stage multi-effect evaporators consider the utilization of the thermal energy from the secondary steam. Some companies simply convert the secondary steam into condensate, either reusing it or discharging it downstream.

However, regardless of the use of the secondary steam, it is necessary to remove bubbles from it. For enterprises that use secondary steam, after pressurizing it with a compressor, as the heating medium in subsequent evaporators, the presence of saline and alkaline droplets and foam in the steam can cause operational failures or even damage to the core equipment; therefore, efficient gas-liquid demisting is required for the secondary steam entering the compressor. For enterprises that simply convert secondary steam into condensate, it is also necessary to remove the saline and alkaline droplets carried by the secondary steam, in order to prevent these substances from crystallizing and accumulating within the heat exchange equipment, which could lead to corrosion and blockages in the heat exchange tubes and thus severely affect the proper operation of the heat exchange equipment ； For enterprises that need to carry out post-condensate treatment, removing the saline and alkaline droplets carried by the secondary steam can reduce the complexity of such treatment processes; in some cases, no treatment is even necessary, **thereby lowering the costs associated with post-treatment.

The last edit to this post was made by luoli519 on 2022-11-30 at 19:49. It is understood that, in the field of soda and salt production, regarding the secondary steam demisting technology used in liquid evaporation, concentration, and crystallization systems, most companies in this traditional industry still rely on conventional simple wire mesh demisters. Only a few companies with a higher level of technical expertise, those that were built or upgraded in recent years, use advanced gas-liquid separation technologies such as vane separation systems and related components.

This post was last edited by luoli519 on 2022-11-30 at 19:50. The feather-leaf separation technology equipment represents the highest level of technology in the field of dynamic gas-liquid separation, namely the fifth generation of such technology. Compared to traditional barrier-type gas-liquid demisting separation devices such as mesh demisters, filter screen demisters, and cartridge-type demisters, vane separation technology devices possess the following distinct technical advantages: 1. Excellent resistance to clogging caused by crystalline salts and alkalis (traditional demisters are highly prone to being clogged by such crystalline substances) ； 2. The operating pressure drop is very low, accounting for about 1/8 to 1/6 of that of traditional demisters ； 3. Higher separation efficiency, especially capable of achieving 4N-level quantitative depth separation and foam removal ； 4. More stable operation ； 5. Greater operational flexibility, generally ranging from 15% to 135% or even wider ； 6. It has stronger corrosion resistance, with a continuous operating life of up to 20 years or even longer (the fibers in traditional demister components are prone to corrosion and breaking, requiring regular inspection and replacement) ； 7. Operation and maintenance are very simple; in fact, no maintenance is required.

This post was last edited by luoli519 on 2022-11-30 at 19:50. Regarding the internal components of the feather-leaf separation technology, which is a patent-based technology from recent years, for more technical information, please visit https://bbs.hcbbs.com/thread-1354813-1-1.html and also go to www.novelseparationtech.com for details.

This post was last edited by luoli519 on 2022-11-30 at 19:51. Information regarding the technical level, internal structure, and technical performance of the components involved in the feather separation technology can be found in the following illustrative table:

This post was last edited by luoli519 on 2022-11-30 at 19:51. As can be seen from a straightforward comparison, the separation technology used in the feather-leaf separator differs from that of traditional foam eliminators based on barriers such as screens; it is less prone to clogging and corrosion. It can also be easily cleaned online or offline. If the vane separator also becomes clogged, then the other demisters will become severely blocked as well, preventing continuous production. To be honest, even if the vane separator occasionally forms some crystalline deposits and no online cleaning is carried out, at most it will lead to a decline in its performance starting from the fifth stage; nevertheless, its performance will still be much better than that of dynamically separating components of lower technical levels as well as traditional mesh-type foam arresters.

The last edit to this post was made by luoli519 on 2023-10-3 at 12:38. The structural diagram of the G50 patented technology’s blade-separating component is as follows: