Separate the coke powder from the dry gas

A cyclone dust collector or a bag filter can be used; the former is suitable for particles larger than 20 microns.

The operating pressure is 6 kilograms; ordinary dust collectors should not be able to withstand such high pressure. Can the dust collection bags and frames withstand such high pressure? Thank you

Based on the operating conditions provided by the poster, removing coke powder from dry gas can be achieved using either a cyclone gas-solid separator or a bag filter. In the case of using bag filters, it is important to note the following: 1. If the content of coke dust is high, it can easily lead to clogging of the filter bags. It is necessary to consider having one unit in operation and another as a backup, so that the latter can be used for maintenance, cleaning, and filter bag replacement, thereby preventing disruptions to the continuity of production. 2. Due to the pulse reverse blowing for dust removal and the maintenance and replacement of filter bags in bag filters, it is inevitable that third components such as air will enter the hydrogen-containing dry gas, and this requires careful consideration. 3. Bag filters configured with one in operation and one as a backup require significant investment, take up a lot of space, have high operating and maintenance costs, and involve a large amount of work; therefore, a comprehensive technical and economic assessment is necessary. As for a working pressure of 0.6 MPa, it does not pose any application challenges for bag filters, and there are many examples of applications with even higher working pressures.

Based on the operating conditions provided by the poster, removing coke powder from dry gas can be achieved using either a cyclone gas-solid separator or a bag filter. In the case of using bag filters, it is important to note the following: 1. If the content of coke dust is high, it can easily lead to clogging of the filter bags. It is necessary to consider having one unit in operation and another as a backup, so that the latter can be used for maintenance, cleaning, and filter bag replacement, thereby preventing disruptions to the continuity of production. 2. Due to the pulse reverse blowing for dust removal and the maintenance and replacement of filter bags in bag filters, it is inevitable that third components such as air will enter the hydrogen-containing dry gas, and this requires careful consideration. 3. Bag filters configured with one in operation and one as a backup require significant investment, take up a lot of space, have high operating and maintenance costs, and involve a large amount of work; therefore, a comprehensive technical and economic assessment is necessary. As for a working pressure of 0.6 MPa, it does not pose any application challenges for bag filters, and there are many examples of applications with even higher working pressures.

Based on our many years of experience in the design and operation of gas-liquid-solid multiphase separation systems both domestically and internationally, as well as our comprehensive technical and economic advantages, we prefer to use cyclone gas-solid separators of types such as multi-factor cyclone mother-gas-solid separators for this type of application. Its relative technical and economic advantages are as follows: 1. The cyclone gas-solid separator is a pure dynamic separator; its internal components have excellent resistance to clogging, making blockages less likely to occur, and there is no need to consider installing a backup unit. It has clear advantages in terms of investment, land use, piping, and operation and maintenance costs. 2. The separation efficiency of the cyclone gas-solid separator is not limited to the removal of particulate matter with a size of 20 microns or larger. If a multi-factor cyclone gas-solid separator is used, it can even remove particulate matter with a size of 3–5 microns under many practical operating conditions. Its separation efficiency is no less than that of conventional bag filters. 3. The cyclone gas-solid separator does not require pulse backwashing for dust removal, nor is there any need to maintain or replace its internal components. No third components such as air can enter the hydrogen-containing dry gas stream, which gives it advantages in terms of maintaining the composition of the gas and ensuring operational safety. 4. The operating pressure and temperature ranges of the cyclone gas-solid separator are much higher than those of bag filters, allowing it to operate stably and efficiently even under high temperature and pressure conditions. It should be emphasized, however, that cyclone gas-solid separators belong to the category of dynamic separators, and their design must be carried out by specialized companies in dynamic separation technology, using dedicated systems for precise design and configuration. Many domestic designers and manufacturers of separators often rely on empirical methods, using rough designs based on approximations and estimates, or even decisions made arbitrarily; such cyclone separators fail to achieve efficient and stable separation performance in actual operation.

Thank you for the reply from luoli519! Is a cyclone gas-solid separator commonly known as a cyclone dust collector?

All separators that utilize cyclone technology are collectively referred to as cyclone separators, and they are further divided into two main categories: cyclone gas-solid separators and cyclone gas-liquid separators. The cyclone separator is a traditional, simple type of coarse separator that has been in use for some time; its separation efficiency and operational flexibility are not ideal. The multi-factor cyclone parent-child separator is a type of new, high-efficiency cyclone separator that offers significant improvements in terms of quantitative separation efficiency, operational flexibility, operating pressure drop, and stability and reliability. Such new high-efficiency separators are commonly used in foreign process packages. However, it requires professional dynamic separation technology companies to use dynamic separation to precisely design the configuration system platform in order to carry out the design.

Does the failure to separate coke powder affect its use?

We don’t seem to have such a separator here