초록 ▼

A low NOx staged combustor for a TEOR steam generator includes a primary combustion chamber lined with an improved refractory lining. The refractory lining includes a first layer of low density ceramic fibrous thermal insulation as of 4″in thickness coated on its hot face with a protective coating o

A low NOx staged combustor for a TEOR steam generator includes a primary combustion chamber lined with an improved refractory lining. The refractory lining includes a first layer of low density ceramic fibrous thermal insulation as of 4″in thickness coated on its hot face with a protective coating of a durable tough material. The ceramic fibers of the insulative layer are oriented normal to the plane of the hot face. In one embodiment, a low density castable refractory thermally insulative layer is sandwiched between the shell of the combustion chamber and the first layer of fibrous insulation. In a second embodiment, a low density thermally insulative ceramic fibrous layer is sandwiched between the shell of the combustion chamber and the first layer of fibrous insulation. In the second embodiment, the ceramic fibrous layers are adhered to the shell by refractory hangers embedded in the fibrous insulation and resistance welded to the shell.

대표청구항 ▼

In a method for protecting the shell of a primary combustion chamber of a staged low NOx burner for a thermally enhanced oil recovery steam generator, the steps of: lining the interior of the primary combustion chamber of the staged low NOx burner with a first layer of fibrous, thermally insulative

In a method for protecting the shell of a primary combustion chamber of a staged low NOx burner for a thermally enhanced oil recovery steam generator, the steps of: lining the interior of the primary combustion chamber of the staged low NOx burner with a first layer of fibrous, thermally insulative material comprised of ceramic fibers, said first layer of insulation material having a density falling within the range of 3 to 30 lbs. per cubic foot, and lining the interior of said first layer of thermally insulative material with a coating of a tough, durable refractory material, whereby the thermal energy stored in the thermally insulative liner is reduced while reducing the weight of the insulative liner and while protecting the first fibrous insulative layer from the deleterious effects of the combustion processes.