Literature

This publication describes a method of cost saving through the introduction of combined procedural and safety-related improvements for the construction and operation of coal grinding plants. The improvement is basically a more compact configuration together with improved systems engineering compared to conventional concepts. As the new design does not ask for important process changes, the main components of a coal grinding plant can be used unchanged, except for the process bag house (dust collector) and in a few cases the fan.

A new way to combine the components of typical storage firing coal mill systems into a compact structure, saving on space, building cost, mill-to-dust collector and related duct lengths, rotating parts and explosion protection equipment.
by Vincent Grosskopf, Thorwesten Vent GmbH, Beckum, Germany

Request for special documentation 1

This text describes explosion venting as part of explosion protection for silos and comes to the conclusion that among experts, explosion protection and fire prevention are not understood as connected subjects. It deals with the difference between re-closing and non re-closing explosion venting. Furthermore, it refers to the industry-sector-specific differences of explosion protection, which in some parts are irreproducible from a professional point of view. The text was presented as a speech at the IV. International Symposium on Hazards, Prevention and Mitigation of Industrial Explosions in Bourges, France, in October 2002.

Explosion vents are a protective means of last resort. How the constructional protective technique explosion venting for silos in the industry must be applied.

Request for special documentation 2

This is a summary of the present situation in explosion protection through pressure relief for coal grinding plants, in regard to the presently valid regulations of VDI 3673, NFPA 85 and NFPA 68. It was first published as a speech for the AFCM
17th Symposium & Exhibition, a symposium well known in the cement industry, in June 2000. The documentation emphasizes the difficulty of the guideline’s implementation and presents a logical and practically realizable solution.

Explosion protection for coal grinding plant. What should really be done?

Request for special documentation 3

Reprint: Explosion protection for dosing systems underneath pulverized fuel silos

Summary: In the cement- and lime industries, pulverized coal or pulverized fuel silos (PF silos) are in use as part of the fuel supply system for kiln plants. As there are no guarantees for auto-ignition-free- and foreign ignition-source-free handling and processing of solid fuels, it is necessary to assess the explosion-protection status of fuel dosing systems in which vessels are connected to the roof of the PF silo by means of a pipe.
The first part of this article discusses the practice-relevant hazardous conditions on which to base the necessary explosion protection.
Part 2 of this article describes the necessary explosion isolation by means of an explosion diverter for the system configurations referred to in part 1.

Request for reprint