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Waste recycling asphalt generates massive amount of electricity | Upload Recycling

Recycling Asphalt Generates Massive Amount Of Electricity

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by: Marike Boonstra
recycling asphalt generates massive amount of electricity | Upload

REKO has started the construction of a new thermal cleaning installation in Rotterdam that will completely convert 1.2 million tonnes of residual materials into primary raw materials, electricity and heat. The realization of this project involves an investment of 125 million euros.

REKO, Recycling Combination REKO B.V, is a producer of sand, gravel and fillers from mineral residues. The company mainly uses asphalt as raw material from road construction and roof leather from utility construction. REKO developed its innovative process specifically intended for the thermal cleaning of these mineral residues. This led to the first thermal cleaning installation that was commissioned by REKO in 2006. In this installation, all harmful substances present in the asphalt burn completely. The thermal cleaning process results in clean sand, gravel and filler - ready for reuse . Also, the installation provides hot waste gases from which energy is recovered in the form of steam, and later on, electricity via a steam turbine. Approximately 30 thousand megawatts of electricity are generated per year: the same amount that approximately 7,500 households on yearly basis. In the past 12 years, 7.2 million tonnes of clean sand and gravel have been produced for the Dutch construction industry.

The largest recycle capacity in the world

The new installation is considerably more efficient because it uses the most new techniques. Moreover, the 12 years of experience that REKO has gained in the field of thermal cleaning has been incorporated into this installation. The new installation not only uses less energy, but also generates considerably more energy. It can generate electricity for as many as 50,000 households. In addition, the installation is made suitable for supplying heat in addition to electricity. The REKO processing technology is a textbook example for circular economy, in which residual materials are 100% converted into new raw materials. With the new installation, REKO has the largest capacity in the world to fully recycle this type of contaminated building material.

Recycling for a European market

In the past, coal tar was used as a binder in the production of asphalt, which contains polluting polycyclic aromatic hydrocarbons, better known as PAHs. In the Netherlands, since 2001, tar-containing asphalt can no longer be used in the production of new asphalt. The tar-containing asphalt granulate must be processed in a way that the polluting components, such as PAHs, are completely destroyed. At the time, the Dutch legislator was the first in Europe with the requirement to permanently remove paks from the chain. This year, the Flemish government followed this example. REKO fulfills the government's objective of removing these harmful substances from the environment. The newest thermal cleaning installation is partly built considering the development of the international market.

David Heijkoop, director of REKO: “Due to the size of our installation, in combination with the large-scale recovery of the energy released, we can reduce the costs for our customers. Also, the location of REKO in the port of Rotterdam provides an excellent starting position for the rest of Europe: we can supply over water. When realized that the Netherlands imports 20 million tons of sand and gravel as primary raw materials for construction from abroad every year, it becomes clear that we can partly meet that need," he adds.  REKO will soon be able to supply around 1.5 million tonnes of clean sand and gravel annually.

Electricity and heat

The thermal cleaning installation uses energy to ignite the combustible components in the asphalt and roof leather. Through the process, four to five times more energy is released then used. In the existing installation, that energy is used to generate electricity. The new installation makes this conversion to electricity much more efficient, and also supplies heat in the form of hot water. The Port of Rotterdam Authority is contributing € 1 million for the realization of this specific part of the installation. The installation will be able to flexibly choose to what extent the energy released during the cleaning process will be converted into heat and / or electricity. When the heat is not required, the installation will convert the energy into electricity.

The work on the construction of the new thermal cleaning installation has already started. According to planning, the new installation will be commissioned in mid-2020.

https://www.whatsorb.com/category/waste

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Recycling Asphalt Generates Massive Amount Of Electricity

REKO has started the construction of a new thermal cleaning installation in Rotterdam that will completely convert 1.2 million tonnes of residual materials into primary raw materials, electricity and heat. The realization of this project involves an investment of 125 million euros. REKO, Recycling Combination REKO B.V, is a producer of sand, gravel and fillers from mineral residues. The company mainly uses asphalt as raw material from road construction and roof leather from utility construction. REKO developed its innovative process specifically intended for the thermal cleaning of these mineral residues. This led to the first thermal cleaning installation that was commissioned by REKO in 2006. In this installation, all harmful substances present in the asphalt burn completely. The thermal cleaning process results in clean sand, gravel and filler - ready for reuse . Also, the installation provides hot waste gases from which energy is recovered in the form of steam, and later on, electricity via a steam turbine. Approximately 30 thousand megawatts of electricity are generated per year: the same amount that approximately 7,500 households on yearly basis. In the past 12 years, 7.2 million tonnes of clean sand and gravel have been produced for the Dutch construction industry. The largest recycle capacity in the world The new installation is considerably more efficient because it uses the most new techniques. Moreover, the 12 years of experience that REKO has gained in the field of thermal cleaning has been incorporated into this installation. The new installation not only uses less energy, but also generates considerably more energy. It can generate electricity for as many as 50,000 households. In addition, the installation is made suitable for supplying heat in addition to electricity. The REKO processing technology is a textbook example for circular economy, in which residual materials are 100% converted into new raw materials. With the new installation, REKO has the largest capacity in the world to fully recycle this type of contaminated building material. Recycling for a European market In the past, coal tar was used as a binder in the production of asphalt, which contains polluting polycyclic aromatic hydrocarbons, better known as PAHs. In the Netherlands, since 2001, tar-containing asphalt can no longer be used in the production of new asphalt. The tar-containing asphalt granulate must be processed in a way that the polluting components, such as PAHs, are completely destroyed. At the time, the Dutch legislator was the first in Europe with the requirement to permanently remove paks from the chain. This year, the Flemish government followed this example. REKO fulfills the government's objective of removing these harmful substances from the environment . The newest thermal cleaning installation is partly built considering the development of the international market. David Heijkoop, director of REKO: “Due to the size of our installation, in combination with the large-scale recovery of the energy released, we can reduce the costs for our customers. Also, the location of REKO in the port of Rotterdam provides an excellent starting position for the rest of Europe: we can supply over water. When realized that the Netherlands imports 20 million tons of sand and gravel as primary raw materials for construction from abroad every year, it becomes clear that we can partly meet that need," he adds.  REKO will soon be able to supply around 1.5 million tonnes of clean sand and gravel annually. Electricity and heat The thermal cleaning installation uses energy to ignite the combustible components in the asphalt and roof leather. Through the process, four to five times more energy is released then used. In the existing installation, that energy is used to generate electricity. The new installation makes this conversion to electricity much more efficient, and also supplies heat in the form of hot water. The Port of Rotterdam Authority is contributing € 1 million for the realization of this specific part of the installation. The installation will be able to flexibly choose to what extent the energy released during the cleaning process will be converted into heat and / or electricity. When the heat is not required, the installation will convert the energy into electricity. The work on the construction of the new thermal cleaning installation has already started. According to planning, the new installation will be commissioned in mid-2020. https://www.whatsorb.com/category/waste