Gasification tar monitoring system, gasification tar monitoring method and gasification tar monitoring device

Patent metadata

Field	Value
Publication number	US-2024319100-A1
Application number	US-202118574659-A
Country	US
Kind code	A1
Filing date	Oct 20, 2021
Priority date	Jun 30, 2021
Publication date	Sep 26, 2024
Grant date	—

Abstract

The system includes a dust collector, a pressure controller, a dryer, a gas heat-insulation device, a gas pool, a gas detector, an optical monitor and a computer sequentially connected. The dust collector is used to filter solid particles in a gas. The pressure controller is used to control a flow rate of the gas. The dryer is used to control a humidity of the gas. The gas heat-insulation device is used to control a temperature of the gas. The gas pool is used to carry the gas. The laser is used to irradiate the gas in the gas pool to generate a Raman scattering light. The gas detector is used to collect the Raman scattering light. The optical monitor is used to adjust and amplify a light signal of the Raman scattering light. The computer is used to output a Raman spectrum and a composition and content of a tar.

First claim

1 . A gasification tar monitoring system, comprising a dust collector, a pressure controller, a dryer, a gas heat-insulation device, a gas pool, a gas detector, an optical monitor and a computer which are sequentially connected,
wherein the dust collector is configured to filter solid particles in a gas when disposed at an exit of a gasifier; the pressure controller is configured to control a flow rate of the gas; the dryer is configured to control a humidity of the gas; the gas heat-insulation device is configured to control a temperature of the gas; the gas pool is configured to carry the gas; one end of the gas detector is connected to a laser through a first optical fiber, the laser is configured to irradiate the gas in the gas pool to generate a Raman scattering light, and the gas detector is configured to collect the Raman scattering light; another end of the gas detector is connected to the optical monitor through a second optical fiber, and the optical monitor is configured to adjust and amplify a light signal of the Raman scattering light; and the computer is configured to output a Raman spectrum and a composition and content of a tar.

2 . The system of claim 1 , wherein the dust collector comprises any one of ceramic film or quartz film.

3 . The system of claim 1 , wherein the laser comprises a laser with an output wavelength of 532 nm.

4 . The system of claim 1 , wherein a temperature inside the gas heat-insulation device is between 300° C. to 600° C.

5 . The system of claim 1 , wherein the gas pool comprises a corrosion-resistant chamber, wherein a socket is provided on the corrosion-resistant chamber, and the socket is configured to mount the gas detector.

6 . The system of claim 5 , wherein the corrosion-resistant chamber comprises a nickel-based alloy chamber.

7 . The system of claim 1 , wherein the optical monitor comprises:
a Fourier Raman spectroscopy optical path configured to adjust an optical path of the Raman scattering light; and a charge coupled device configured to amplify a light signal of the adjusted Raman scattering light.

8 . A method for monitoring a gasification tar using the system of claim 1 , comprising:
inputting gaseous standard compounds with different concentrations into the system sequentially, and outputting at least one group of standard characteristic spectrum peaks; determining a standard curve function of the standard compound through heights of spectrum peaks of each group of standard characteristic spectrum peaks and the concentration of the standard compound; inputting a gas into the system, and outputting at least one group of characteristic spectrum peaks; determining a type of a compound by comparing the characteristic spectrum peak with the standard characteristic spectrum peak; determining a concentration of the compound corresponding to a height of the characteristic spectrum peak through the standard curve function corresponding to the compound; and determining a concentration of a tar in the gas through the concentration of the compound.

9 . The method of claim 8 , wherein the standard compound comprises any one of benzene, toluene, xylene, naphthalene or phenol.

10 . A gasification tar monitoring device, comprising a system of claim 1 .

Assignees

• Univ Tianjin
• Univ Civil Aviation China

Inventors

• Chen Guanyi
• Li Jian
• Chen Da
• Yan Beibei
• Tao Junyu
• Zhang Wei
• Cheng Zhanjun
• Zhou Shengquan

Classifications

• C10J3/723

  Controlling or regulating the gasification process · CPC title

• G01J3/44

  Raman spectrometry; Scattering spectrometry {; Fluorescence spectrometry} · CPC title

• G01N1/2205 Primary

  with filters · CPC title

• G01N1/28

  Preparing specimens for investigation {including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q}(mounting specimens on microscopic slides G02B21/34; means for supporting the objects or the materials to be analysed in electron microscopes H01J37/20 {; laboratory gas handling apparatus B01L5/00}) · CPC title

• G01N1/2247

  Sampling from a flowing stream of gas · CPC title