Maharashtra Govt. approves 1600 cr desalination project

 Maharashtra Chief Minister Uddhav Thackeray has approved to set up a desalination project with a capacity of 200 MLD in Mumbai.The project will entail an investment of Rs 1,600 crore. The project will be set up over 30 acre at Manori, Malad, and is expected to be completed in four years. After tapping about six possible locations, the Brihanmumbai Municipal Corporation (BMC) has finalised Manori for setting up the project.The capacity of the plant can be raised to 400 MLD in the future, which can make up for the shortfall of 10 percent of the total water consumption of the city of 3,800 MLD when there is poor rainfall.

The detailed project report will be prepared in around nine months and take another three months to complete the tendering process.The actual completion of the project will need around three more years. The site has been finalised by the technical team as it has no mangroves around it, good quality of water and connected by roads, among other reasonsBMC had tapped five other locations, including Versova, Gorai, Malad, among others for the project. The project will help to make up the shortfall of potable water in summer due to the late arrival of monsoon or shortfall in expected water stock. The operational cost of the project will reduce significantly if operated on solar power.The operational cost of the desalination plant is higher than the dam-based water-supply projects and has been one of 

the reasons behind the delay to the project, which has been planned for years. BMC expects it to be 50% more than its existing system of dam-based water supply.

Desalination is a process that takes away mineral components from saline water. More generally, desalination refers to the removal of salts and minerals from a target substance,as in soil desalination, which is an issue for agriculture.

Saltwater (especially sea water) is desalinated to produce water suitable for human consumption or irrigation. The by-product of the desalination process is brine. Desalination is used on many seagoing ships and submarines. Most of the modern interest in desalination is focused on cost-effective provision of fresh water for human use. Along with recycled wastewater, it is one of the few rainfall-independent water sources.

There are approximately 16,000 operational desalination plants, located across 177 countries, which generate an estimated 95 million m3/day of freshwater.Currently, desalination accounts for about one percent of the world’s drinking water.Desalination is particularly prevalent in countries located in the Middle East and North Africa region, such as Saudi Arabia, the UAE, and Kuwait.Desalination is also an important source of water in the Small Island Developing States.

Due to its energy consumption, desalinating sea water is generally more costly than fresh water from surface water or groundwater, water recycling and water conservation. However, these alternatives are not always available and depletion of reserves is a critical problem worldwide. Desalination processes are usually driven by either thermal (in the case of distillation) or electrical (in the case of reverse osmosis) as the primary energy types.

Currently, approximately 1% of the world's population is dependent on desalinated water to meet daily needs, but the UN expects that 14% of the world's population will encounter water scarcity by 2025.Desalination is particularly relevant in dry countries such as Australia, which traditionally have relied on collecting rainfall behind dams for water.

Kuwait produces a higher proportion of its water through desalination than any other country, totaling 100% of its water use.

PCTFE vs PTFE - A Comparison of Two Very Similar Polymers

 The difference between PTFE and PCTFE is mainly in the chemical structure. The addition of one Chlorine atom in place of one Fluorine atom leads to a massive change in its properties and application.

PTFE is a versatile and cost effective material of average tensile strength. It has very good thermal properties and excellent chemical inertness, especially to strong acids. The coefficient of friction is unusually low and believed to be lower than any other solids. PTFE is an outstanding electrical insulator over a wide range of temperatures and frequency.

At the molecular level, PTFE is a linear polymer with high molecular weight (Length of Polymer Chains) and Crystallinity level of 50-70% depending on the processing conditions.

Due to its high viscosity, PTFE cannot be processed using conventional polymer processing techniques. Hence, PTFE is processed by cold forming operation followed by heat treatment (sintering) during which polymer particles fuse to form a solid moulding.

PCTFE has a higher tensile strength than PTFE and good thermal characteristics. It is non-flammable and heat resistant up to 180°C. PCTFE is resistant to the attack of most chemicals and oxidizing agents, due to the presence of high fluorine content. However, it swells slightly in halogenated compounds, ethers, esters and aromatic solvents.

PCTFE has one of the highest limiting oxygen index. It has good chemical resistance and also exhibits properties like zero moisture absorption and non-wetting.

PCTFE has a low coefficient of thermal expansion and its dimensional stability makes it attractive for use as a component of a structural part where the high temperature and chemical resistance of fluoropolymers is required.

PCTFE is melt processable by conventional process techniques such as Injection moulding, Extrusion and Compression moulding. 

PCTFE is a homopolymer of chlorotrifluoroethylene (CTFE), whereas PTFE is a homopolymer of tetrafluoroethylene. PCTFE is a harder and stronger polymer, with better mechanical properties than PTFE. Though PCTFE has excellent chemical resistance, it is still less than that of PTFE. PCTFE has lower viscosity, higher tensile strength and creep resistance than PTFE.

Even though PTFE remains a niche polymer among more generic materials such as PP (Polypropylene), PVC, PE (Polyethylenes, such as HDPE and LDPE), and even Nylons, within the engineering space it is now quite common. Most applications involving high temperature, corrosive chemicals, high voltages, or high wear/friction now look to PTFE automatically as a solution. 

Despite this, there do exist applications where PTFE does not fit the bill and a compromise must be made. For example, applications where high dimensional stability is needed across a wide temperature range, PTFE tends to fall short. The high linear thermal expansion coefficient of PTFE means that it cannot hold its dimensions as temperatures vary. In such a situation, we have seen PEEK being adopted. While PEEK does do the trick, it is also 10X the cost of PTFE.

Similarly, certain applications where cost is a constraint need to make do with POM (Delrin), or even PVC, where PTFE cannot be used. In such a scenario, we possibly forego some of PTFE’s key properties.

Over the years a variety of new polymers that have been developed to fill the performance and commercial gaps between PEEK and PTFE. These include PFA, FEP, PEK, PPS (Ryton), and PCTFE.

Although not well known, PCTFE forms an ideal substitute for PTFE in certain applications where PTFE is unable to perform adequately. The table below is meant to offer a snapshot comparison of the two, such that any application engineer can evaluate the key differences.

As you can see from the above chart, PCTFE and PTFE each have unique advantages and disadvantages when compared with one another. Like all polymers, the application needs to be properly understood and the commercials need to be weighed in before any decision can be made.

However, it is fair to say that when dimensional stability across a temperature range is a must, PCTFE is growing to become the most effective substitute for PTFE.

Quazless participated in the 10th China International Fluid Machinery Exhibition with HANDA and DESW

 Quazless participated in the 10th China International Fluid Machinery Exhibition with HANDA and DESW

On December 9, 2020, the 10th China (Shanghai) International Fluid Machinery Exhibition (IFME2020) hosted by China General Machinery Industry Association was grandly opened at the National Convention and Exhibition Center (Shanghai).

"China (Shanghai) International Fluid Machinery Exhibition (IFME)" is the only fluid machinery industry in China hosted by China General Machinery Industry Association with a large scale, high industry authority, rich exhibits, advanced exhibits, and visitors. Highly large-scale professional exhibition.

The exhibition is mainly divided into several major areas such as valves, pumps, fans, compressors, pipe fittings, vacuum equipment, reduction gears, air separation, etc., which concentratedly showcased the latest achievements in technological innovation and product development of domestic and foreign fluid machinery manufacturing industries. .

At the opening ceremony, Mr. Wang Ruixiang, President of China Machinery Industry Federation, attended the opening ceremony as a special guest, and Ms. Huang Li, President of China General Machinery Industry Association, delivered an opening speech.

Oriole: This exhibition was postponed from June this year to today after a lot of efforts, consultation and communication after our country has achieved a major victory in the fight against the new crown epidemic. It is not easy! Therefore, this exhibition is also a collective appearance for the general machinery industry in fighting the epidemic, resuming production, and maintaining steady growth of the industry!

After the epidemic, the first major military parade for the entire industry chain of the fluid machinery industry, 500+ industry leaders arrived as scheduled, bringing their blockbuster products to the National Convention and Exhibition Center (Shanghai) 1.1H, 2.1H Hall more than 50,000 square meters of exhibition area, highlighting The hard core strength of China's fluid machinery has shown the vigorous vitality and development potential of China's fluid machinery industry and market to the industry. The next month’s promotion and the online Zhongvalve BTB network promotion platform have received close attention from the personnel with professional brand planning ability and considerate service.

During the exhibition, the organizer not only invited important users in the industry, engineering companies, foreign embassies in China, domestic and foreign industry organizations to visit, but also held technology summit forums with rich content and various forms, international industry forums, technology exchange meetings, and new Activities such as product launches and user signing ceremonies. In order to fully display the industry influence of the exhibition, more than 100 professional media in the industry conducted all-round publicity and reports on participating and exhibiting companies from different angles and multiple channels during the exhibition.

The organizer of IFME2020, Zhongtong Xiete, carefully planned two "Procurement Matchmaking Meetings"

The most impressive thing is this college exhibition area

Shanghai Jiaotong University, Shanghai Institute of Technology and other universities have demonstrated some research results, which are conducive to the integration of industry and enterprises

QUALZESS brings its brand HANDA and DESW booth at 1.1H Valve Hall J09.

Visitors from all over the country and various industries have shown strong interest in Gotshanda products and have received formal inquiries.

Thanks again to the friends who came to the exhibition booth.