US 2020/0240920 A1Published application

A real-time detection device and method for domestic waste components in an incinerator

AssigneeZhejiang University

InventorsQunxing HUANG, Yafei WANG, Shoukang WANG, Yong CHI, Xiaodong LI, Fei WANG, Shengyong LU, Jianhua YAN

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Abstract

The present invention relates to a real-time detection device for municipal solid waste components in an incinerator. The real-time detection device includes: an optical fiber sensor, which faces combustion flame of municipal solid waste combustion region through an observation hole in the incinerator; a spectrometer, which is used for receiving optical signal of the optical fiber sensor; an industrial personal computer, which is used for receiving data of the spectrometer and outputting the municipal solid waste components according to a municipal solid waste component detection program; the municipal solid waste component detection program obtains combustion flame spectral information of municipal solid waste in the incinerator by utilizing the optical fiber sensor and the spectrometer, and detects the municipal solid waste components in real time based on combustion flame spectrum of a single waste component. The present invention further relates to a real-time detection method for municipal solid waste components in an incinerator. Compared with manual classified sampling and detection, the device and method provided by the present invention have the advantages of high efficiency, rapidness, accuracy, capability of being updated in real time; and can realize stable combustion of the municipal solid waste in the incinerator, and reduce emission of pollutants and realize efficient and clean utilization of the municipal solid waste.

Claims8

Dependent claims

A real-time detection device for municipal solid waste components in an incinerator, wherein, the real-time detection device comprises:

an optical fiber sensor, which faces combustion flame of municipal solid waste combustion region through an observation hole in the incinerator;
a spectrometer, which is used for receiving optical signal of the optical fiber sensor;
an industrial personal computer, which is used for receiving data of the spectrometer and outputting the municipal solid waste components according to a municipal solid waste component detection program;
the municipal solid waste component detection program comprise the following process:
(1) collecting combustion flame spectral information of municipal solid waste components at common temperature in the incinerator and storing the information in the information base;
(2) collecting combustion flame spectral information of mixed municipal solid waste through the spectrometer;
(3) calculating the flame temperature T according to the combustion flame spectral information of mixed municipal solid waste collected in Step (2);
(4) setting the number of single component of municipal solid waste to be detected as N, using Xi to represent the proportion of component i, i=1˜N, then the proportion of each component is represented as matrix
[
X
1
⋮
X
N
]
;
retrieving the combustion flame spectral information of each single component at flame temperature T calculated by Step (3)
[
I
λ
1
,
T
,
E
1
…
I
λ
1
,
T
,
E
N
⋮
⋱
⋮
I
λ
i
,
T
,
E
1
…
I
λ
i
,
T
,
E
N
]
,
and the equation is obtained:
[
I
λ
1
,
T
,
E
1
…
I
λ
1
,
T
,
E
N
⋮
⋱
⋮
I
λ
i
,
T
,
E
1
…
I
λ
i
,
T
,
E
N
]

[
X
1
⋮
X
N
]
=
[
E
λ
1

(
T
)
⋮
E
λ
i

(
T
)
]
;
Eλi(T) represents the flame emission characteristic line intensity of mixed municipal solid waste at wavelength λi and temperature T;
Iλi,T,EN represents the flame emission characteristic line intensity of component Ei at wavelength λi and temperature T;
(5) solving the equation of Step (4) to obtain the proportion of each component in the municipal solid waste.

124 more elements

A real-time detection method for municipal solid waste components in an incinerator, wherein, the real-time detection method comprises following process:

(1) collecting combustion flame spectral information of the municipal solid waste components at common temperature in the incinerator and storing it in the information base;
(2) collecting combustion flame spectral information of mixed municipal solid waste through the spectrometer;
(3) calculating the flame temperature T according to the combustion flame spectral information of mixed municipal solid waste collected in Step (2);
(4) setting the number of single components of municipal solid waste to be detected as N, using Xi to represent the proportion of component i, i=1˜N, then the proportion of each component is represented as matrix
[
X
1
⋮
X
N
]
;
retrieving the combustion flame spectral information of each single component at flame temperature T calculated by Step (3)
[
I
λ
1
,
T
,
E
1
…
I
λ
1
,
T
,
E
N
⋮
⋱
⋮
I
λ
i
,
T
,
E
1
…
I
λ
i
,
T
,
E
N
]
,
and the equation is obtained:
[
I
λ
1
,
T
,
E
1
…
I
λ
1
,
T
,
E
N
⋮
⋱
⋮
I
λ
i
,
T
,
E
1
…
I
λ
i
,
T
,
E
N
]

[
X
1
⋮
X
N
]
=
[
E
λ
1

(
T
)
⋮
E
λ
i

(
T
)
]
;
Eλi(T) represents the flame emission characteristic line intensity of mixed municipal solid waste at wavelength λi and temperature T;
Iλi,T,EN represents the flame emission characteristic line intensity of component Ei at wavelength λi and temperature T;
(5) solving the equation of Step (4) to obtain the proportion of each component in the municipal solid waste.

120 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/494,384Filed 31 Jan 2019
Priority: CN 201810147535.X12 Feb 2018
Published: 30 Jul 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

G01N 21/71
Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light: thermally excited
G01N 21/72
Thermally excited: using flame burners
F23G 5/50
Incineration of waste ; Incinerator constructions; Details, accessories or control therefor: control or safety arrangements
G01J 3/0218
Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows: using optical fibers