HyGear BV

P.O. Box 5280, 6802 EG Arnhem
Westervoortsedijk 73, 6827 AV Arnhem
Netherlands
Telephone +31 88 9494-300
Fax +31 26 9494-399
info@hygear.com

Contact

Joanna Kwan

Phone
0031889494308

Email
sales@hygear.com

Our range of products

Product categories

  • 01  Glass production/Production Technology
  • 01.02  Auxiliary and operating materials
  • 01.02.02  Industrial gases

Our products

Product category: Industrial gases

On-site hydrogen generation

HyGear offers hydrogen supply ranging from 10 Nm3/h up to 1000 Nm3/h. We apply both technologies of steam methane reforming and electrolysis. Our steam methane reformers offer the most energy-efficient and cost-effective supply of hydrogen. Our electrolysers offer zero-emission hydrogen supply and are especially suited for applications where electricity is affordable or zero-emission is mandatory or desired.

The Hy.GEN-e systems produce hydrogen through alkaline electrolysis technology. This is the most widely applied and proven technology available today and therefore offers a safer and more reliable alternative to conventional hydrogen supply by trailers.

Our product portfolio consists of four standardised models and can be placed in parallel to tailor the total supply to the customer’s needs. Systems are containerised to minimise floor space, which is important in some applications.

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Product category: Industrial gases

Hydrogen/Nitrogen gas recovery system

The Hy.RECmix recovers a significant fraction of the hydrogen-nitrogen gas mixture so it can be reused in the process. HyGear has designed the system on low operating pressure to ensure low electricity consumption.

Significant amounts of the hydrogen-nitrogen gas mixture are – in combination with pollutants – left at the exit of industrial processes and left unutilised. The Hy.RECmix system can recover this used and polluted mixed gas atmosphere from the process. By feeding the polluted gas mixture into HyGear’s Gas Recovery System, a significant fraction of the hydrogen and nitrogen can be recovered and reused as a new reductive gas mixture.

Since the economical viability of industrial gas recycling systems depends on the value of the recovered gas in relation to the energy consumption of the system, the Hy.RECmix is designed to consume the lowest possible electricity, which results in the highest economical rate of return. The key part of the integrated post-treatment module is the advanced Temperature Swing Adsorption (TSA) with ultralow pressure drop to further reduce operational expenses.

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Company news

Date

Topic

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Sep 1, 2019

GAS RECYCLING AND ITS ADVANTAGES

As the focus is shifting towards reduction of harmful emissions, industries are constantly searching for alternative ways to reduce the environmental impact of their processes. At the same time, companies in the glass industry are continuously seeking ways to optimize the glass production process, improving the glass quality, and reducing costs.

As a gas supplier, HyGear made its entry into the flat glass industry with its small-scale on-site hydrogen generation systems that fit the requirements in terms of gas purity, reliability in gas flow, and significant cost reduction. The company has also identified the needs of glass companies to use more protective gases in order to improve the quality of their end product. Currently, all these gases are vented into the environment, and largely, within the facility of the glass plant.

The increasing desire to reduce environmental impact therefore conflicts with the objective to reduce costs and improve product quality. This was the starting point for the development of the Hy.RECmix. This technology has the ability to recover, clean, and recycle the vented gases from the tin bath and feed them back into the process. By using this method, the amount of fresh gases that is required for the process reduces, thus leading to lower expenses and less venting. This entails in the reduction of harmful emission without jeopardising the product quality.

Advantages

HyGear is not the first company that designed gas recycling systems. The reason for the limited market penetration of the formerly launched systems is the low internal rate of return caused by high capital investment and high energy consumption. Both aspects are due to the fact that the spent gases are only available at low pressure and most of the common upgrading methods require large pressure differentials. The Hy.RECmix is designed on innovative low-pressure upgrading technologies and therefore, consumes the lowest possible electricity, and lowest possible maintenance expenses.

Most importantly, the Hy.RECmix does not interfere with the glass production process. Connecting the Hy.REC to the float line is not limited to the period when a cold or hot repair has to be carried out; it can be done while the float line is operating under its normal conditions.

Reduction of environmental impact

The development of the Hy.RECmix is to recover the gas mixtures from the tin bath in float glass production and to reuse the gas within the process. In the current production process, significant amounts of hydrogen and nitrogen gas mixture, including pollutants, are vented and left unutilized.

This technology has proven to be an effective method for cost reduction as the amount of fresh gases feed will decrease and the carbon footprint of the whole process will decrease as well.  The following figure shows the reduction of CO2 and dust emissions associated to the supply chain of nitrogen and hydrogen.

Working principle

Extraction of the entire mixture of hydrogen and nitrogen that can be done from the hot-end of the tin bath. Depending on the desired venting rate, this could go up to 700 Nm3 per hour on a single Hy.RECmix system.

 There are three stages in the process of gas recovery by the system.

  • Firstly, the dust removal stage uses cooling and mechanical separation techniques to remove tin-oxide from the recycle gas flow. Tin can be recovered from the captured dust and used again in the float line.
  • Next, the sulfide and oxygen removal stage uses physical and chemical low pressure separation techniques for desulphurization and deoxidation.
  • And finally, the post treatment stage concerns the drying of the gas mixture and the further purification up to the purity and dew point required to be fed back into the process 
The advanced gas cleaning system, Hy.REC will feed the recovered gas through HyGear’s low pressure supply system to each of the float line bays separately ensuring low pressure drop and continuously gas supply. Through the company’s highly reliable feeding system, the float glass plant operator has the ability to separately configure the gas composition in each bay of the float line allowing the controller to reduce the hydrogen required in different parts of the tin bath.

The status of technology

The Hy.RECmix technology was developed in close cooperation with Saint Gobain. Over the past years, modules for cleaning different components were tested at HyGear as well as Saint Gobain’s float line in Herzhogenrath Germany. These tests have led to an integrated system that is currently installed in Saint Gobain’s float line in Porz Germany, where it is deployed to recover a maximum of 700 Nm3 per hour of mixed gas from the tin bath, clean it and feed it back into the process.

More information

The HyRECmix offers a series of technologies that are combined in an innovative way to lower capital expenses (CAPEX) and operational expenses (OPEX). The operation of the system is fully automated and the quality of the gas produced is continuously monitored by the system’s programmable logic controller (PLC).

The Hy.RECmix is a standardized system that fits every float line in the world but can be tailored to specific requirements of different float lines related to the number and location of injection points and variations in gas compositions over the tin bath. The systems are housed within a 40ft container or can be skid mounted to match space restrictions in specific situations. Installation, integration, and commissioning at the site can be accomplished in four weeks.

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About us

Company details

HYGEAR SUCCEEDED IN DOWNSCALING HIGHLY EFFICIENT HYDROGEN GENERATION AND RECYCLING SYSTEMS TO A SCALE THAT MATCHES THE END-USER’S NEEDS.

Our company is built on a vision that Hydrogen will be the fuel of the future. Once this happens, the current supply method of central hydrogen production and delivery by road transportation is no longer an economically viable option.

At HyGear, we developed technologies to generate and recycle hydrogen at the end-users site. We have been applying these technologies in many different industrial applications over the past decades offering advantages in reliability, cost, and environmental impact. 

In years to come, we will continue to focus on these industrial applications as well as grow our install base in hydrogen energy application and thus become an enabler for a clean and sustainable future.

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