27. August 2019 10:07
Platinized Titanium anodes take advantage of the low consumption rate and high current density. Voltages in excess of 10 Volts will result in severe pitting of the titanium core causing premature failure.
Platinized Niobium / Tantalum anodes also take advantage of the properties of platinum, but avoid the low driving voltage restriction of Platinized titanium anodes. Breakdown of the niobium oxide film occurs at approximately 120 Volts. Thus these anodes are used where high driving voltage is required. Platinized anodes are quite expensive but have an extremely long life. They are therefore an economical choice for critical applications.
Mixed Metal Oxide anodes consist of a high purity titanium substrate with an applied coating consisting of a mixture of plat... [More]
◾Platinum plated Titanium (Platinized Titanium) anode 1250 mm x 1000
◾Platinum plated Niobium (Platinized Niobium) anode 900 mm x 500
22. August 2019 10:19
The platinum surface is preferably deposited by an electroplating operation whereby a thin fixed coating of platinum covers the entire surface of the unit. The electrodeposition may be carried out, for example, by using a bath consisting of 4.5 grams of platinic chloride and 22 milliliters of 37% hydrochloric acid dissolved in 2800.... [More]
In carrying out the electrolysis of an electrolyte, such as brine, to produce chlorine and caustic, the improved metallic anode of the present invention may be used in any [More]
Refurbishment include recoating, rebuilding the standoff and / or replacement, depending on the condition of the Electrolyzers. Refurbishment time is only 2-4 weeks. Low current output, damaged standoffs, leaking seals or damaged mounting threads are the symptoms of refurbishment. [More]
19. August 2019 10:47
The electrolysis of a solution of an alkaline chloride, such as brine (NaCl), has been widely utilized as a method for producing chlorine and caustic. The sodium ion travels to the cathode during the process, such that sodium hydroxide (NaOH) and hydrogen gas are produced at the cathode. The chlorine ion travels to the anode and gaseous chlorine is evolved, although a small portion of the gaseous material may become dissolved in the brine solution. Brine may be continuously supplied to a chamber or cell at the zone of the anode and caustic may be continuously withdrawn from the cell at the zone of the cathode. At the same time gaseous chlorine and hydrogen may be separately withdrawn overhead from the cell. In modified cells which employ mercury, the mercury acts as a cathode ... [More]
16. August 2019 13:16
Anode and Cathode Coating:
The key components of all electrochemical processes are the electrodes and, in some cases, the separators. The last century has seen many developments in both for the electrode materials and ion permeable membranes and allows successful implementation of many novel concepts. Where optimum performance of electrode material is needed, electrodes made from noble metals or noble metal oxides are the components of choice. The common features of the materials of electrodes are
a) The use of the platinum group and there oxides as coatings on
b) The minimization of platinum metal loading... [More]
10. August 2019 10:24
The cathode and anode ageing is another problem and replacement cost is also very high. Reminding both causes i.e. increasing cathode and anode life and decreasing cell voltage; anode side and cathode side coating is generally done. In presents the need, factors affecting and methods for applying cathode and anode coating is highlight with latest development in this zone. It is expected that the study will help to understand the anode and cathode coating in details manner in Chlor-Alkali Industry and modification needed in this zone. The objective of the study is given below:
1. To see the various causes of the failure of electrode coatings.
2. To discuss the effective coating process.
3.  ... [More]
What is EDI?
High purity water production has traditionally used a combination of membrane separation and ion exchange processes. EDI is a....