Vane-type gas-liquid separator, demister, and mist remover used for demisting in the hydrogen chloride circulation compressor of silane coupling agent production plants – NOVEL...

Additionally, on the silane crosslinking agent production line, the synthesis units for chloropropyltrichlorosilane and alkoxysilanes involve the compression of hydrogen chloride gas recycle gas.

For the cyclic compression of hydrogen chloride in siliconane coupling agent production equipment, two-stage or multi-stage compression is generally used. The liquid droplets and mist of chloropropyltrichlorosilane and alkoxysilanes carried by the hydrogen chloride gas stream are present in significant amounts in the inlet section, between stages, and in the discharge section, having a noticeable adverse effect on the operation of the compressor.

Typically, the operating temperature of cyclic hydrogen chloride compressors is at room temperature, and coolers are required at each compression stage as well as in the discharge section to effectively reduce the temperature. Viscous silane derivatives have poor flow properties in pipelines, compressors, and heat exchangers; they tend to accumulate in these equipment pipelines and form viscous deposits, causing various negative effects on the operation of compressors and heat exchangers.

Based on the process parameters set, the operating pressure at the inlet of the circulating hydrogen chloride compression unit is generally between -0.02 and 0.01 MPaG, while the final outlet pressure of the compression unit rises to between 0.5 and 1.0 MPaG. The flow rate of hydrogen chloride gas in the pipelines and compressors varies greatly.

This post was last edited by luoli519 on 2019-1-31 at 22:42. For technical information on the Yuye high-efficiency gas-liquid demisting and separation device, which is used in the inlet section, inter-stage areas, and discharge section of hydrogen chloride circulation compressors, you can visit https://bbs.hcbbs.com/thread-1354813-1-1.html, or go to www.novelseparationtech.com and www.novelenergytech.com for more details.

This device introduces hydrogen chloride into the vapor phase of the circulation compression unit; the composition is 98.5% hydrogen chloride and 1.5% chloropropyltrichlorosilane.

After compression or multi-stage compression, and the removal of the liquefied substances using efficient gas-liquid demisting and defoaming separators between stages, the hydrogen chloride content in the exhaust gas can reach 99.9% or even higher. It can be seen that the high-efficiency gas-liquid demisting and defoaming separator in the inlet section and between stages can not only capture and recover chloropropyltrichlorosilane but also further purify the circulating hydrogen chloride gas stream.

This is also supported by the composition of the collected liquid: the liquid chloropropyltrichlorosilane captured in the inlet section accounts for over 99%.

This post was last edited by luoli519 on 2017-1-4 09:30. Regarding dynamic separation technology and the design calculations for its internal components, it should be noted that some manufacturers both domestically and internationally have begun to adopt the high-efficiency gas-liquid demisting and defoaming separation components developed by NOVEL Company. However, professionals know that although single-leaf products can be replicated to look similar, a mathematical model system platform based on precise dynamic separation design cannot be replicated – and that is the key! With separate imitation vanes, and in the absence of a mathematical model system platform that enables precise dynamic separation corresponding to the internal components of those vanes, it is not possible to utilize the stacked individual vanes in a precise dynamic configuration for reliable industrial separation processes; it’s similar to having a pile of iron plates but being unable to build an aircraft carrier from them. A shoddy model of an aircraft carrier that sinks as soon as it’s put in the water – complete waste of money. The high-efficiency gas-liquid demisting and defoaming separation technology for feather-shaped leaves is the design outcome and configuration form derived from the design technology of its precise kinetic separation system platform. It is necessary to rely on the design results and configuration forms obtained through the technology for designing precise kinetic separation system platforms, taking into account fluid dynamics parameters such as the gas phase composition and average molecular weight under different temperature and pressure conditions, the comparative compressibility factor of gases based on air as a reference system, gas phase viscosity, gas phase density, and gas phase flow rate, as well as liquid phase density, liquid phase viscosity, liquid phase surface tension, and the maximum liquid phase flow rate.

This post was last edited by luoli519 on 2017-1-16 at 13:47. With the same operating conditions and process parameters, the results obtained through calculations and design by non-specialized companies differ significantly from those achieved by professional dynamic separation technology companies using their advanced platforms for precise dynamic separation calculations and design. One of the most significant differences in the design calculations lies in the difference in the gas phase compressibility factor under their respective operating conditions. It should be noted that accurate and reliable dynamic separation technologies and their components must be verified through prior model platform experiments. For preliminary model platform testing, the safest and most readily available gaseous medium is air. Therefore, all prior dynamic separation models in the international community are systems using air as the medium. To approximate real operating conditions as closely as possible using a platform model for dynamic separation systems, it is necessary to use the gas phase under real conditions as a reference similar to air at atmospheric pressure, in order to obtain the compression factor with respect to air at atmospheric pressure. This compression factor is very different from the value of the compression factor based on an ideal gas, as given in the manual! ! The compressibility factor used by non-professional dynamic separation technology companies is the value of the compressibility factor under ideal conditions, as found in handbooks. The volume flow velocity under the operating conditions calculated using this ideal compressibility factor differs significantly from the volume flow velocity through the components of the dynamic separation technology under actual operating conditions. Naturally, there is a significant difference in the separation efficiency achieved at different volumetric flow rates under the same operating conditions! Companies complain that their separators achieve a separation performance that is far worse than the value specified in the design. Designing calculations by mistakenly using the compressibility factor of an ideal gas as the relative compressibility factor of air under pseudo-atmospheric conditions is the reason why the actual separation efficiency of the separators manufactured by companies at home and abroad during operation differs significantly from the calculated separation efficiency. In other words, the compression factor from the ideal state specified in the manual was simply copied over; whereas the compression factor used in the parameter conversion related to flow rate in the kinetic separation design model refers to the compression factor based on air under pseudo-atmospheric pressure as a reference system!