Process Know-how

Storage, conveyance and metering of hygroscopic bulk products

Summary: The storage of hygroscopic bulk products in larger vessels/silos frequently causes problems such as clumping and encrustations, up to and including complete blockage. In 1978, the solids solutions group constructed the first outdoor metal silos for urea and granulated sugar, the provisions implemented then resulting in trouble-free operation and retaining their validity even today. Pneumatic conveyance, vibratory bowls with integrated cutters for discharge of Big Bags and a vibratory grid integrated into the silos are, as plant-engineering solutions, of an importance equal to that of adherence to the specified product and ambient temperatures and relative air-humidity in filling of silos with hygroscopic bulk products.

1 Introduction
Urea, due to its extremely pronounced capacity to absorb and fix water, is classified as highly hygroscopic. The product is an important nitrogen fertilizer, and is also used industrially as a binder in insulating panels and chipboards, for example. It has also recently come into use for the reduction of oxides of nitrogen in the exhaust gas emitted by motor vehicles, and in the use of substitute fuels, in the cement industry, for instance. Urea is injected in solution into the hot exhaust flow downstream internal combustion engines, where it reduces the oxides of nitrogen in the...

Related articles:

Issue 11/2010

“From bulk solids to the silo”

The university course “From bulk solids to the silo” will take place in Brunswick/Germany from 21.–22.02.2011. The main topics will focus on silos, i.e. from the characterization of bulk solids via...

more
Issue 09/2014 MALAYSIA

New engineering and supply order

The Malayan company CMS Clinker SDN BHD is building a new cement grinding plant in Mambong/Sarawak on Borneo for which Christian Pfeiffer Maschinenfabrik GmbH, Beckum has been awarded the contract....

more
Issue 04/2012

Cement storage and dispatch

YTL Cement (Terminal Services, Singapore), a subsidiary of YTL Corporation Berhad, one of the largest manufacturers of cement in Malaysia has awarded a contract to Claudius Peters Projects GmbH. The...

more
Issue 12/2011

Duo cell silos for Mordovcement

Mordovcement/Russia has awarded a contract to Claudius Peters for the delivery of two new cement dispatch silos to be commissioned in the early part of 2012. These cement silos form part of the new...

more
Issue 7-8/2014 INDONESIA

Silo order from PT Semen Padang

In May 2014 Claudius Peters Projects from Buxtehude/Germany was awarded a contract by PT Semen Padang to supply two new cement storage silos for their new Indarung VI plant. PT Semen Padang was...

more