Newsletter-October November December 2022

Prevention of production delays due to corrosive gases

Corrosive gases can corrode the machinery used in the manufacturing process. This can lead to breakdowns, production delays, and expensive repairs. To prevent these issues, manufacturers in the pulp and paper industry must carefully monitor the air quality in their facilities and take steps to control the levels of corrosive gases.

Gas Phase Filtration System is the most ideal and cost-effective system to deal with any issue of corrosion in various control rooms. It is critical to airborne molecular gaseous and particulate contamination removal.

When manufacturing paper and pulp, it’s important to consider the presence of corrosive gases. In the pulp and paper industries, there are various chambers, including DCS rooms, recovery boiler control rooms, pulp milk control rooms, fiber line control rooms, evaporated line control rooms, and others, which are used to develop the products. These control rooms are exposed to a wide range of corrosive chemicals such as chlorine, sulphides, hypochlorite, and other similar substances as the pulp reacts at various stages during processing.

Bry-Air Desiccant Dehumidifiers and Gas Phase Filtration System have proven to be a game-changer for the pulp and paper industry, effectively solving the persistent problems of controlling humidity and removing corrosive gases. With the ability to regulate moisture content and eliminating the e-corrosion problems across various processes, these systems have become an indispensable tool for ensuring quality paper production.

During Manufacturing process for preparing the multi-layer tyres, some use only steel belts for the added strength, others add cross knitted steel wires, which makes it stronger. The room in which steel wires are covered with fabric, converting it into a single bonded ribbon, which is, then braided, is referred to as the Creel Room.

In the Creel Room, various wires of fabric and steel pass through the winding machine from large spools. Presence of high humidity in this room leads to rusting of steel wires, leading to a large rejection rate and loss of strength. Rusting prevents proper bonding between the steel and rubber. Dehumidification of Creel Room therefore becomes a vital application area.

Bry-Air Solution

Bry-Air dehumidifiers in creel rooms helps in maintaining conditions of 20±5% RH. Due to the nature of the manufacturing, the area surrounding the creel room may be at a temperature and humidity higher than normal ambient conditions.

In the Creel Room, various wires of fabric and steel pass to the winding machine from large spools. This total area is taken into consideration while calculating moisture load.
Also, sufficient make-up air is introduced to provide the positive pressure in the space. It is also imperative that when the cord leaves the creel room, it must travel through ambient air. At this time, if the temperature of the cord is below the dew point, temperature of the ambient moisture will condense on it and will be trapped in the finished ply. Therefore, the cord must never leave the creel room unless it is at a temperature above the dew point temperature of the ambient air.

Tyres incorporated with the superior radial tyre technology have withstood the test for a longer life than conventional tyres. All this has been made possible due to adherence to quality manufacturing practices. Adding a desiccant dehumidifier to protect the steel cord ensures a“lasting bond, which never tires.

• CPhl & P-MEC, Greater Noida
• BAPA foodpro, Bangladesh
• Deepak Pahwa presenting at IESA, India Habitat Centre, New Delhi
• Dhirendra Chaudhary presenting at Indian Food Safety Summit & Awards, New Delhi