header image

Welcome to ZOZEN

ZOZEN is one of the best modern boiler manufacturers in China, our products include steam boilers, hot water boilers and thermal oil heaters. ZOZEN boiler is located in Wuxi, covers 150 thousand square meters of production area, equipped with first-class production equipment, passed the ISO9001:2000 international quality system certification. The company gained the " S " and " U " steel seal from ASME of US.

Customer service

If you run into any problems with the boiler, please contact us directly by email or fill out the online service request. We will do our best to resolve any problems you might have within 24 hours.

In case of special condition, ZOZEN will forward your request to one of its partnered sales representatives depending on the country and state. The local maintenance personnel will arrive at the customer site as soon as possible.


Home - Global CCS Institu

The world's leading CCS think tank The Global CCS Institute is an international think tank whose mission is to accelerate the deployment of carbon capture and storage (CCS), a vital technology to tackle climate change and deliver climate neutrality. With a team of almost 40 professionals working with and on behalf of our Members, we drive []

xuyi@zozen.com >

Get A Quote >

Foaming and priming in boilers - Lennte

Boiler water carry-over is the contamination of the steam with boiler-water solids. Bubbles or froth actually build up on the surface of the boiler water and pass out with the steam. This is called foaming and it is caused by high concentration of any solids in the boiler water. It is generally believed, however, that specific substances such as alkalis, oils, fats, greases, certain types of

xuyi@zozen.com >

Get A Quote >

Stainless Steel Cleaning | Metal Casting Resourc

2019-7-11 · A clean stainless steel surface can be re-damaged through mechanical means, extreme heat, or chemical damage. When this happens, iron is exposed, and the material is once again subject to rusting. Passivation may need to be performed on a regular basis to prevent rust. Passivation maximizes the inherent corrosion resistance of a stainless alloy.

xuyi@zozen.com >

Get A Quote >

Selection of stainless steels for handling chlorine (Cl

Selection of stainless steels for handling chlorine (Cl2) and chlorine dioxide (ClO2) Introduction. Chlorine is a powerful oxidising agent. It normally occurs as a gas

xuyi@zozen.com >

Get A Quote >

Sulfites for Oxygen Control - Scranton Associat

2014-10-25 · Corrosion is primarily a phenomenon in which the metal surface hosts a network of galvanic cells. In the presence of water, there is a tendency for ions to go into solution at the anode, For good corrosion control in a boiler, rapid reaction is sought between oxygen and the chemical non-metallic agent of catalysis.

xuyi@zozen.com >

Get A Quote >

What is Passivation? How Does Stainless Passivatio

2019-10-10 · The passivation process typically uses nitric or citric acid to remove free iron from the surface. This results an inert, protective oxide layer that is less likely to chemically react with air and cause corrosion. By chemically removing free irons from the surface of stainless steel, the passivation process adds a thin oxide "film" layer.

xuyi@zozen.com >

Get A Quote >

Stress corrosion cracking (SCC) in boilers and coolin

Because of the relative lack of general corrosion on most metal surfaces, stress corrosion crack growth can initiate and propagate to total fracture with little or no warning. This happens in materials that are considered fairly corrosion resistant in the boiler water or cooling water system in

xuyi@zozen.com >

Get A Quote >

7.0 Chemical Treatment - steamforum.c

2017-8-24 · Corrosion control aids in boiler cleanliness and predominantly steel surface where dissolved oxygen can directly attack the metal. levels). However, sulfite is not considered to be a good passivating agent because it does not passivate low pressure boilers, where sulfite is most often used. Passivation can be accomplished in high

xuyi@zozen.com >

Get A Quote >

Pickling and Passivating Stainless Ste

2016-8-19 · PICKLING AND PASSIVATING STAINLESS STEEL 2 1. Introduction – The Passive Layer occurring conditions such as contact with air or aerated water will create and maintain the corrosion resis ting passive surface c ondition. In this way stainless steels can keep their corrosion resistance, even where mechanical damage (e.g. scratching or machining

xuyi@zozen.com >

Get A Quote >

Corrosion in high-temperature and supercritical water an

2010-8-10 · General corrosion In contrast to pitting corrosion, the reason for general corrosion is a general instability of the oxide lm, and thus, corrosion attacks the entire surface. The typical morphology is a shallow, wave-like pitting (Fig. 6). General corrosion happens in

xuyi@zozen.com >

Get A Quote >

Boiler | Engaged in Thermodynami

Feedwater enters the boiler though the economizer and rises as steam to the steam drum, where the water and steam are separated. The lower drum, called the mud drum, is a tank at the bottom of the boiler that regulates water distribution and collects sediment or corrosion products for later removal. Water Tube Boilers

xuyi@zozen.com >

Get A Quote >