Method and device for estimating outer surface temperature of radiant coil of cracking furnace for ethylene production and ethylene producing device
AssigneeToyo Engineering Corporation
InventorsKenichi Tominaga, Michiko Nakajo, Noritaka Sakaguchi
Life of this patent
Estimating the term…
Abstract
A device for estimating an outer surface temperature of a radiant coil which is provided in an cracking furnace for ethylene production including a convection coil that preheats hydrocarbons as raw materials and steam, a radiant coil that thermally decomposes the preheated hydrocarbons and steam, and a housing for accommodating them, and which includes an imaging camera that images a region to be imaged of the radiant coil, and an image analyzer that processes an output signal from the imaging camera and estimates an outer surface temperature of the radiant coil.
Claims12
A method for estimating an outer surface temperature of a radiant coil of a cracking furnace for ethylene production including a convection coil that preheats hydrocarbons as raw materials and steam, a radiant coil that thermally decomposes the preheated hydrocarbons and steam, and a housing for accommodating them, the method comprising:
- a process in which a region to be imaged of the radiant coil is imaged by an imaging camera;
- and
- a process in which an output signal from the imaging camera is processed by an image analyzer and an outer surface temperature of the imaged radiant coil is estimated,
- wherein the imaging camera is a color video camera that outputs brightness for each light-receiving pixel at each wavelength of RGB, a monochromatic video camera that outputs brightness for each light-receiving pixel at a single wavelength of 1 to 3 μm, or a 2-sensor camera that outputs a brightness ratio between a first wavelength and a second wavelength, both of which are 1 to 3 μm.
A device for estimating an outer surface temperature of a radiant coil of a cracking furnace for ethylene production, which is provided in the cracking furnace for ethylene production including a convection coil that preheats hydrocarbons as raw materials and steam, a radiant coil that thermally decomposes the preheated mixed gas of hydrocarbons and steam, and a housing for accommodating them, the device comprising:
- an imaging camera that images a region to be imaged of the radiant coil;
- and
- an image analyzer that processes an output signal from the imaging camera and estimates an outer surface temperature of the radiant coil,
- wherein the imaging camera is a color video camera that outputs brightness for each light-receiving pixel at each wavelength of RGB, a monochromatic video camera that outputs brightness for each light-receiving pixel at a single wavelength of 1 to 3 μm, or a 2-sensor camera that outputs a brightness ratio between a first wavelength and a second wavelength, both of which are 1 to 3 μm.
Dependencies are inferred from the claim text.