Fuel composition which combusts instantaneously, method and plant therefor

A fuel composition, comprising:

• from 60 to 95% by weight of a fossil fuel;
• and
• from 40 to 5% by weight of a non-fossil solid fuel including urban solid waste, and at least a further component selected from the group consisting of elastomeric polymer materials, non-elastomeric polymer materials and mixtures thereof,
• wherein at least 90% by weight of the fuel composition fed into a burner is combusted in less than 10 seconds.

A fuel composition, comprising:

• from 60 to 95% by weight of a fossil fuel;
• and
• from 40 to 5% by weight of particles less than 1 mesh in size of a non-fossil solid fuel including urban solid waste, and at least a further component selected from the group consisting of elastomeric polymer materials, non-elastomeric polymer materials, and mixtures thereof,
• wherein at least 90% by weight of the fuel composition fed into a burner is combusted in less than 10 seconds.

A combustion method comprising the steps of:

• feeding the flame of a burner of an instantaneous-combustion boiler with a flow of fuel composition including:
• from 60 to 95% by weight of an instantaneously combusting fossil fuel;
• and
• from 40 to 5% by weight of a non-fossil solid fuel made of urban solid waste and one or more other materials selected from the group consisting of elastomeric polymer materials, non-elastomeric polymer materials, and mixtures thereof, which has been suitably treated so as to be instantaneously combustible;
• combusting at least 90% by weight of said fuel composition fed into the burner in less than 10 seconds.

A combustion method comprising the steps of:

• feeding a fuel composition into a zone of a boiler, said zone having a predetermined temperature value and said fuel composition including:
• from 60 to 95% by weight of at least one instantaneously combusting fossil fuel, and
• from 40 to 5% by weight of at least one instantaneously combusting non-fossil fuel including urban solid waste, and at least one further component selected from the group consisting of elastomeric polymer materials, non-elastomeric polymer materials, and mixtures thereof;
• combusting said fuel composition in said boiler such that at least 90% by weight of the fuel composition is combusted in less than 10 seconds, and
• generating an amount of heavy ash from said combustion step,
• wherein said predetermined temperature value is selected so that non-combusted materials are contained in said amount of heavy ash in an amount of less than 50% by weight.

A combustion method comprising the steps of:

• feeding a boiler with a fuel composition including:
• from 60 to 95% by weight of an instantaneously combusting fossil fuel, and
• from 40 to 5% by weight of an instantaneously combusting non-fossil fuel including urban solid waste, and at least one further component selected from the group consisting of elastomeric polymer materials, non-elastomeric polymer materials, and mixtures thereof,
• combusting said fuel composition in said boiler such that at least 90% by weight of the fuel composition is combusted in less than 10 seconds,
• generating an amount of heavy ash from said combustion step,
• wherein said non-fossil fuel has a predetermined particle size so that non-combusted materials are contained in said amount of heavy ash in an amount of less than 50% by weight.

A system for combusting, comprising:

• a fuel composition comprising from 60 to 95% by weight of at least one instantaneously combusting fossil fuel, and from 40 to 5% by weight of at least one instantaneously combusting non-fossil fuel including urban solid waste, and at least one further component selected from the group consisting of elastomeric polymer materials, non-elastomeric polymer materials, and mixtures thereof,
• a boiler having at least one burner,
• a system for supplying said at least one burner with a flow of said at least one instantaneously combusting fossil fuel carried by a carrier fluid, and
• a system for feeding said at least one instantaneously combusting non-fossil solid fuel into said flow,
• wherein said system for combusting and said fuel composition are configured such that at least 90% by weight of said fuel composition is combusted in less than ten seconds when said fuel composition is fed into said boiler.

A system for combusting, comprising:

• a fuel composition comprising from 60 to 95% by weight of at least one instantaneously combusting fossil fuel, and from 40 to 5% by weight of at least one instantaneously combusting non-fossil fuel including urban solid waste, and at least one further component selected from the group consisting of elastomeric polymer materials, non-elastomeric polymer materials, and mixtures thereof,
• a boiler comprising at least one burner and at least one fire area,
• a system for supplying the fire area of said boiler with a flow of said at least one instantaneously combusting fossil fuel carried by a carrier fluid, and
• a system for conveying said at least one instantaneously combusting non-fossil fuel into the fire area of said boiler,
• wherein said system for combusting is configured such that at least 90% by weight of said fuel composition is combusted in less than ten seconds when said fuel composition is fed into said boiler.