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A valve to help curb seaborne cargo VOC emissions

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Marine fuel storage tanks

Valve manufacturer Bay Valves explores the issue of VOC emissions, and potential solutions, including a new valve that the firms says combines some of the safety properties of high velocity and valves with pressure control. This article is adapted from one recently appearing on the firm’s blog.

Around 70 million barrels of hydrocarbons are lost yearly due to evaporation of Volatile Organic Compounds (VOC) during loading, storage and transportation of crude oil on ships. This is an environmental problem as well as a significant economic cost.

The lost amount represents a value of 3.0 to 3.5 billion USD annually. In other words: if you are a shipping operator, curbing seaborne VOC emissions is a chance to make your business more profitable. For a standard ship such as an Aframax tanker, the economic loss during a single voyage with full tank amounts to more than 40,000 USD.

In past days, this loss of cargo was viewed as a necessary evil since prevention was considered too costly. Fortunately, recent technical breakthroughs have changed the scene.

From under-pressure to positive pressure
Over the last decade, scientific studies have demonstrated the efficiency of the Saturated Vapor Pressure (SvP) concept. Simply by maintaining a high pressure inside cargo tanks, the VOCs are contained within the liquid hydrocarbon phase and are unable to evaporate.

As a consequence of the new insight, loading systems for tankers were soon modified so under-pressure was replaced by a positive pressure. Over the following years, several tankers were equipped with such new technology. Depending on the exact volatility and composition of the crude oil, VOC generation fell by 70 to 90 %. As a positive side-effect, emissions of other volatile cargos such as chemical products, LPG (Liquified Petroleum Gas) and LNG (Liquified Natural Gas) were reduced similarly by the same technology, while emissions of H2S and other environmentally harmful compounds were also brought down.

Avoiding fluctuations in pressure is important
The story does not end with introducing positive tank pressure, however, as traditional venting systems allow considerable fluctuations in pressure. Traditional venting systems are autonomous weight loaded systems that initiate venting at a preset setting and continues far beyond what is necessary and thus closes at a much lower pressure, venting an unnecessarily large amount of VOC and inert gas into the atmosphere.

To tackle the challenge of fluctuations in tank pressure, Bay Valves has invented the SuperSat (Sat is for Saturation) system, which continuously maintains the high tank pressure and thus avoids VOC losses.

VOC emission control is obviously not the only concern for a crude oil transporter. Safety will always be a top priority. As High Velocity Valves have long been established as the industry standard in regard to safety due to the ability to respond extremely fast to occurring leaks, a VOC emission control system can only be successful when integrated fully with High Velocity Valves featuring a negative pressure drop.

This very fact is the motivation behind the invention of SuperSat – a valve that integrates the excellent safety properties of the High Velocity Valve with pressure control and thus efficient VOC emission control which is associated with the Saturated Vapor Pressure (SvP) concept.

Why VOC emissions should be reduced
VOCs are a large group of organic compounds. Several light hydrocarbons, such as methane, ethane and propane, are VOCs. Due to high vapor pressure, VOCs can easily evaporate. To the oil industry, evaporation of hydrocarbons equals economic loss.

VOC can also cause oil spill on a ship’s deck, as severe VOC generation can cause oil entrainment into the mixture of inert gas and VOC.

Further, VOC emissions can harm the environment and human health. Especially methane is a potent greenhouse gas, contributing to climate change. Several other VOCs including ethane, propane, butane, pentane, and hexane react with NOx to form ground level ozone which has harmful effects on human health and on plants.

An overlooked problem
For many years did VOC emissions receive little focus. As noted in an important study by Bhatia and Dinwoodie, University of Plymouth, UK, this could largely be attributed to the attention devoted to large scale oil-spills such as the Exxon Valdez accident (Alaska, 1989) and similar events. While major spills would attract wide media coverage and subsequently political interest in mitigation, the tiny, yet constant leakages caused by evaporation of VOCs would go by unnoticed.

In their article “Daily losses in shipping crude oil: measuring crude oil loss rates in daily North Sea shipping operations” (Energy Policy, 2004), Bhatia and Dinwoodie state: “Historically low crude oil prices generated little interest in losses under 0.5 %, but today oil majors host loss control departments investigating how the tonnage employed, type of crude, varying load and discharge ports and evaporation during cargo operations affect losses.”

The study by Bhatia and Dinwoodie went on to demonstrate how the continuous leakages of VOC would amount to significant total losses.

As a consequence of this and other studies, several countries and organizations began to look into the problem. For instance, the Norwegian Marine Technology Research Institute (MARINTEK) concluded that storage and loading of crude oil on ships was responsible for more than 50 % of Norway’s non-methane VOC emissions.

The studies went on to estimate that as much as 9 million tons of VOC was emitted annually from global crude oil loading and transport, with about 5 million tons emitted during the actual transport. The figure corresponds to about 70 million barrels of light end hydrocarbons representing a value between 3.0 and 3.5 billion USD annually.

Stay ahead of regulation
Following the increased focus on VOCs, the International Maritime Organization (IMO) and several countries, regions and cities with harbours have adapted or are considering schemes to curb VOC emissions.

This presents oil majors with a unique window of opportunity: by investing in VOC emission control, they can save millions of dollars while adapting to upcoming environmental standards for the industry.

The SuperSat system for VOC control is one product that can help. The price is comparable to traditional venting systems.

Coinsmart. Beste Bitcoin-Börse in Europa
Source: https://envirotecmagazine.com/2021/04/26/a-valve-to-help-curb-seaborne-cargo-voc-emissions/

Cleantech

Tips and Tricks to Avoid Clogged Drains

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Whether it is in the kitchen, bathroom, or laundry room, a clogged drain should not be taken for granted. Clogged drains that are left unattended even for just one day can bring you a multitude of problems.

Regardless of what type of plumbing system you have, the possibility of it developing clogs is almost always 100%. So, when you start noticing that something is wrong with your drains, find a solution for your problem right away. Do not be one of those homeowners who would wait until it’s too late to even call for plumbing repair. It is always better to prevent clogged drains than scramble to fix them.

THE HARMFUL EFFECTS OF CLOGGED DRAINS

Clogged drains do not only affect your home’s structural integrity, but they can also cause problems for you and your family.

Structural Damage

Clogged drains cause water backflow that seeps into your home’s foundations. With water surrounding the foundations, the structure and integrity weaken, leading to significant damage.

Blocked drains that have been unattended for a long time may cause flooding that can easily damage your walls and floors. 

Health Problems

Unattended clogged drains bring with them waste and bacteria, which can cause allergies and diseases and can spread viruses. If you or someone in your household has asthma or airborne allergies, the blocked drains may trigger attacks. Also, the water that builds up in the pipes is contaminated and may cause skin irritation or inflammation.

A Smelly Home

The stagnant water that accumulates in the pipes mixes with sewage, which is the perfect recipe for unpleasant smells. It does not only make your home smell bad, but it also poses a risk to you and your family. The smell can cause nausea, headaches, and even allergic reactions.

Pests, Molds, and Contaminated Water

Stagnant water is a magnet for mosquitoes, pests, and other insects. They become a breeding ground for germs. Additionally, if your blocked drains remain unattended for a long time, your water will be contaminated.

Slow Drainage and Leaks

Clogged drains slow down drainage systems, which means they won’t be able to work efficiently. Also, leaking is possible because there is too much water trapped inside the pipe. Since the water does not have anywhere to go, the pipe can end up bursting and leaking.

To prevent the situations mentioned above from happening, learn how to avoid clogged drains. Below is an infographic that can serve as your guide.

Coinsmart. Beste Bitcoin-Börse in Europa
Source: https://usgreentechnology.com/tips-and-tricks-to-avoid-clogged-drains/

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Cleantech

Tips and Tricks to Avoid Clogged Drains

Avatar

Published

on

Whether it is in the kitchen, bathroom, or laundry room, a clogged drain should not be taken for granted. Clogged drains that are left unattended even for just one day can bring you a multitude of problems.

Regardless of what type of plumbing system you have, the possibility of it developing clogs is almost always 100%. So, when you start noticing that something is wrong with your drains, find a solution for your problem right away. Do not be one of those homeowners who would wait until it’s too late to even call for plumbing repair. It is always better to prevent clogged drains than scramble to fix them.

THE HARMFUL EFFECTS OF CLOGGED DRAINS

Clogged drains do not only affect your home’s structural integrity, but they can also cause problems for you and your family.

Structural Damage

Clogged drains cause water backflow that seeps into your home’s foundations. With water surrounding the foundations, the structure and integrity weaken, leading to significant damage.

Blocked drains that have been unattended for a long time may cause flooding that can easily damage your walls and floors. 

Health Problems

Unattended clogged drains bring with them waste and bacteria, which can cause allergies and diseases and can spread viruses. If you or someone in your household has asthma or airborne allergies, the blocked drains may trigger attacks. Also, the water that builds up in the pipes is contaminated and may cause skin irritation or inflammation.

A Smelly Home

The stagnant water that accumulates in the pipes mixes with sewage, which is the perfect recipe for unpleasant smells. It does not only make your home smell bad, but it also poses a risk to you and your family. The smell can cause nausea, headaches, and even allergic reactions.

Pests, Molds, and Contaminated Water

Stagnant water is a magnet for mosquitoes, pests, and other insects. They become a breeding ground for germs. Additionally, if your blocked drains remain unattended for a long time, your water will be contaminated.

Slow Drainage and Leaks

Clogged drains slow down drainage systems, which means they won’t be able to work efficiently. Also, leaking is possible because there is too much water trapped inside the pipe. Since the water does not have anywhere to go, the pipe can end up bursting and leaking.

To prevent the situations mentioned above from happening, learn how to avoid clogged drains. Below is an infographic that can serve as your guide.

Coinsmart. Beste Bitcoin-Börse in Europa
Source: https://usgreentechnology.com/tips-and-tricks-to-avoid-clogged-drains/

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Cleantech

The 6 Uses of Green Technology

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Green technology uses eco-friendly practices to create sustainable innovations to bring a positive impact on the environment. These innovations are produced to fulfil society’s needs without harming the environment. Ultimately, green tech aims to limit using natural resources, create recyclable products, modify operational processes to reduce waste and pollution, and replace environmentally destructive practices.

To give examples of how green tech is used in society and everyday life, here are several uses of green technology, from electric scooters to renewable energy sources.

1. Road Transportation

In the US alone, road transportation is responsible for 29% of greenhouse gas emissions, making it the largest contributor to carbon emissions. That’s why it makes sense that the transportation industry is pushing for more electric vehicles and other eco-friendly ways to travel.

In particular, electric scooters have become one of the most popular forms of electric vehicles among commuters due to their convenience, affordability, and efficiency. Moreover, e-scooters are easy to purchase. Riders only need to drop by their nearest e-scooter shop or order online through reliable electric scooter websites

Besides e-scooters, electric cars have also made their way to consumers as brands like Toyota and Tesla offer electric or hybrid models. As demand for eco-friendly cars rises, more manufacturers will use green tech to provide eco-friendly and sustainable vehicles.

2. Data Server Technology

Data centres are buildings or spaces dedicated to housing computer systems such as servers. Tech giants like Google usually maintain large data centres, resulting in high energy consumptions and expenses. Due to the servers’ financial and environmental impact, Google and other tech giants like Apple and Amazon have been actively creating and maintaining efficient data centres.

Using green tech, these corporations can make cooling more efficient to reduce energy consumption. Some data centres even use waste heat to warm people’s homes. It proves that green tech’s benefits will inevitably extend to others.

3. Architecture

Green technology application in construction and architecture help minimise the harmful effects of constructing buildings, houses, and infrastructures on the environment and human health. It is done by using eco-friendly materials or applying sustainable construction practices.

A great example of green architecture is the Pixel Building in Australia. It is the country’s first carbon-neutral building that can generate power and water on its own. The building features colourful panels that act as both shade and natural lighting, a roof that catches rainwater, supports for processing wastewater, and vertical wind turbines. All these features allow the building to function without depleting natural resources and producing harmful substances to the environment.

4. Mining

As one of the industries that contribute most to the destruction of the natural environment, the mining industry is taking steps to make mining greener. Green mining uses technologies, processes, and best practices that reduce mining’s impact on the environment. The effects of green mining include reducing greenhouse gases and chemical use and improving energy efficiency.

An example of green mining technologies includes the Carbon Capture and Storage (CCS), which traps carbon dioxide produced from mining and stores it inside underground storage. Another green mining approach is using clean fuel on mining machinery to decrease gas emissions and integrate clean energy sources.

5. Recycling and Waste Management

As population and consumerism increases, all kinds of waste will also increase. Green tech will be vital to segregate, manage, recycle, and discard them properly. Several technologies and approaches are already being used to make efficient waste management and recycling. These include automated food waste tracking systems and smart containers to separate and manage solid waste.

Moreover, green tech is also being used to turn waste into power. A series of machinery known as “digesters” take in waste, such as food, animal waste and agricultural leftovers, and turn them into energy that can be used onsite. Other green technologies being used in this sector include thermal conversion and plasma arc recycling.

6. Energy Production

Finally, green tech offers the most applications in this sector. Green tech brings new methods to create new and efficient energy sources and alternative sources of energy to reduce fossil fuel usage. It is also used to improve the energy efficiency of buildings through green design and construction. 

One notable example of green tech in energy production is biofuel. It is any fuel produced from plants, algae, animal waste, and other biomass. Since these sources are replenishable, biofuel is considered a renewable energy source. Due to its sustainability and potential, more initiatives are developing biofuels from forestry, waste papers, and crop residues, among others.

The Future of Green Technology

Because of green tech, technology proves that it can truly help society create a better future. As more governments and organisations push for and apply green technology today, more people will incorporate green tech into their daily life. As a result, green tech will not only provide a sustainable lifestyle but also open more jobs. Time will only tell how green technology will expand in the future and how deep its influence will be.

Coinsmart. Beste Bitcoin-Börse in Europa
Source: https://usgreentechnology.com/the-6-uses-of-green-technology/

Continue Reading

Cleantech

The 6 Uses of Green Technology

Avatar

Published

on

Green technology uses eco-friendly practices to create sustainable innovations to bring a positive impact on the environment. These innovations are produced to fulfil society’s needs without harming the environment. Ultimately, green tech aims to limit using natural resources, create recyclable products, modify operational processes to reduce waste and pollution, and replace environmentally destructive practices.

To give examples of how green tech is used in society and everyday life, here are several uses of green technology, from electric scooters to renewable energy sources.

1. Road Transportation

In the US alone, road transportation is responsible for 29% of greenhouse gas emissions, making it the largest contributor to carbon emissions. That’s why it makes sense that the transportation industry is pushing for more electric vehicles and other eco-friendly ways to travel.

In particular, electric scooters have become one of the most popular forms of electric vehicles among commuters due to their convenience, affordability, and efficiency. Moreover, e-scooters are easy to purchase. Riders only need to drop by their nearest e-scooter shop or order online through reliable electric scooter websites

Besides e-scooters, electric cars have also made their way to consumers as brands like Toyota and Tesla offer electric or hybrid models. As demand for eco-friendly cars rises, more manufacturers will use green tech to provide eco-friendly and sustainable vehicles.

2. Data Server Technology

Data centres are buildings or spaces dedicated to housing computer systems such as servers. Tech giants like Google usually maintain large data centres, resulting in high energy consumptions and expenses. Due to the servers’ financial and environmental impact, Google and other tech giants like Apple and Amazon have been actively creating and maintaining efficient data centres.

Using green tech, these corporations can make cooling more efficient to reduce energy consumption. Some data centres even use waste heat to warm people’s homes. It proves that green tech’s benefits will inevitably extend to others.

3. Architecture

Green technology application in construction and architecture help minimise the harmful effects of constructing buildings, houses, and infrastructures on the environment and human health. It is done by using eco-friendly materials or applying sustainable construction practices.

A great example of green architecture is the Pixel Building in Australia. It is the country’s first carbon-neutral building that can generate power and water on its own. The building features colourful panels that act as both shade and natural lighting, a roof that catches rainwater, supports for processing wastewater, and vertical wind turbines. All these features allow the building to function without depleting natural resources and producing harmful substances to the environment.

4. Mining

As one of the industries that contribute most to the destruction of the natural environment, the mining industry is taking steps to make mining greener. Green mining uses technologies, processes, and best practices that reduce mining’s impact on the environment. The effects of green mining include reducing greenhouse gases and chemical use and improving energy efficiency.

An example of green mining technologies includes the Carbon Capture and Storage (CCS), which traps carbon dioxide produced from mining and stores it inside underground storage. Another green mining approach is using clean fuel on mining machinery to decrease gas emissions and integrate clean energy sources.

5. Recycling and Waste Management

As population and consumerism increases, all kinds of waste will also increase. Green tech will be vital to segregate, manage, recycle, and discard them properly. Several technologies and approaches are already being used to make efficient waste management and recycling. These include automated food waste tracking systems and smart containers to separate and manage solid waste.

Moreover, green tech is also being used to turn waste into power. A series of machinery known as “digesters” take in waste, such as food, animal waste and agricultural leftovers, and turn them into energy that can be used onsite. Other green technologies being used in this sector include thermal conversion and plasma arc recycling.

6. Energy Production

Finally, green tech offers the most applications in this sector. Green tech brings new methods to create new and efficient energy sources and alternative sources of energy to reduce fossil fuel usage. It is also used to improve the energy efficiency of buildings through green design and construction. 

One notable example of green tech in energy production is biofuel. It is any fuel produced from plants, algae, animal waste, and other biomass. Since these sources are replenishable, biofuel is considered a renewable energy source. Due to its sustainability and potential, more initiatives are developing biofuels from forestry, waste papers, and crop residues, among others.

The Future of Green Technology

Because of green tech, technology proves that it can truly help society create a better future. As more governments and organisations push for and apply green technology today, more people will incorporate green tech into their daily life. As a result, green tech will not only provide a sustainable lifestyle but also open more jobs. Time will only tell how green technology will expand in the future and how deep its influence will be.

Coinsmart. Beste Bitcoin-Börse in Europa
Source: https://usgreentechnology.com/the-6-uses-of-green-technology/

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