【Daily Question】Chemical Engineering Principles 178: Packing (September 20)
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This post was last edited by “Back to Cambridge” on September 23, 2015, at 12:42. Starting today, the Chemical Engineering Theory section is launching the “Question of the Day” activity, aimed at helping everyone reinforce their fundamental knowledge in chemical engineering. Subsequently, series such as “Principles of Chemical Engineering”, “Mass Transfer and Separation”, “Chemical Engineering Thermodynamics”, and “Chemical Process Technology” will also be introduced. We hope for your active participation! For the “Question of the Day” activity, answers can be viewed directly in the replies; however, the thread will be closed after one day ! You get 2 wealth points for participating, and an additional 3 wealth points for correct answers. Short answer question: Into which categories can fillers be divided? What are the requirements for fillers? Fillers can be mainly divided into solid fillers and mesh fillers ； It is required to have a large specific surface area, a high porosity, certain chemical stability and mechanical strength, as well as to be lightweight and cost-effective.
Fillers can be mainly divided into: solid fillers and mesh fillers； Such as: Raschig rings, Böhr ring, stepped rings and arc-saddle type packing, rectangular-saddle type packing, etc. Requirements: It should have a large specific surface area and high porosity, low material consumption, light weight, low cost, be durable, possess high mechanical strength, good chemical stability, and excellent corrosion resistance.
Fillers: metallic fillers, non-metallic fillers. It is further divided into structured packing and loose packing.
Fillers can be mainly divided into solid fillers and mesh fillers; they are required to have a large specific surface area, a high porosity, certain chemical stability and mechanical strength, as well as to be lightweight and cost-effective
Into which categories can fillers be divided? What are the requirements for fillers?
For bulk and structured fillers, it is necessary to have a large specific surface area, low pressure drop, and high efficiency.
Fillers can be mainly divided into solid fillers and mesh fillers； It is required to have a large specific surface area, a high porosity, certain chemical stability and mechanical strength, as well as to be lightweight and cost-effective.
The types include: Lassie rings, Bower rings, arc-saddle shape, rectangular-saddle shape, stepped rings, and mesh packing. The requirements for fillers include a large specific surface area, high porosity, a high number of fillers per unit volume of packing, ease of manufacture, low cost, corrosion resistance, and certain mechanical strength.
Fillers can be mainly divided into solid fillers and mesh fillers； It is required to have a large specific surface area, a high porosity, certain chemical stability and mechanical strength, as well as to be lightweight and low in cost.
Classified by the installation method of the biological filler, they can be roughly divided into fixed-type, suspended-type, dispersed-type, and new types of biological fillers