Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for analyzing and detecting organic matters in solid and liquid through laser thermal cracking

A thermal cracking and laser technology, applied in the field of laser thermal cracking, can solve the problems of lack of detection methods for chemical composition changes, and achieve the effects of simple and fast sample pretreatment, small sample consumption, and shortening the period of analysis and detection.

Pending Publication Date: 2022-05-03
海南锋测生物科技有限公司
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent uses scanning electron microscopy as a detection method to observe the structure and morphology of organic matter, but lacks detection methods for the chemical composition changes of products in each phase

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for analyzing and detecting organic matters in solid and liquid through laser thermal cracking
  • Method for analyzing and detecting organic matters in solid and liquid through laser thermal cracking
  • Method for analyzing and detecting organic matters in solid and liquid through laser thermal cracking

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A suspended bed hydrogenation pilot tail oil was selected as the raw material of this example. Since the cutting temperature of this tail oil is 500°C, it is different from the suspension bed hydrogenation tail oil industrial products. It is pretreated by conventional dehydration and removal of mechanical impurities. The properties of the suspended bed hydrogenated tail oil are shown in Table 1.

[0054] Table 1

[0055]

[0056]

[0057] Example 1 The reaction conditions of laser thermal cracking are shown in Table 2.

[0058] Table 2

[0059] Carbon dioxide laser power, W 130 Irradiation time, s 5 Sample mass, mg 1.05 pyrolysis atmosphere Argon CO2 laser mode continuous

[0060] Example 1 The sample temperature of laser thermal cracking is shown in Table 3.

[0061] table 3

[0062]

[0063]

[0064] Example 1 The gas product yield of laser thermal cracking is shown in Table 4.

[0065] Table 4

[0066] ...

Embodiment 2

[0072] The Heishan coal was selected as the raw material in this example, and the properties of the Heishan coal after drying and pretreatment are shown in Table 6.

[0073] Table 6

[0074] project Montenegro coal Fixed carbon, w% 49.38 Ash content, w% 17.76 Volatile matter, w% 17 Carbon content, m% 93.35 Hydrogen content, m% 5.95 Oxygen content, m% 21.27 Nitrogen content, m% 1.88 Sulfur content, m% 0.58 Calorific value of constant volume high position, MJ / kg 25.65 Calorific value of constant volume low position, MJ / kg 24.66 Volume mean diameter, μm 43.18 Porosity, vol% 24.39

[0075] Example 2 The reaction conditions of laser thermal cracking are shown in Table 7.

[0076] Table 7

[0077] Carbon dioxide laser power, W 100 Irradiation time, s 3 Sample mass, mg 3.19 pyrolysis atmosphere 60vol% nitrogen + 40vol% hydrogen CO2 laser mode continuous

...

Embodiment 3

[0088] The waste and old LDPE produced by Shanghai Petrochemical was selected as the raw material of this example, and the properties of the waste and old LDPE after drying and pretreatment are shown in Table 11.

[0089] Table 11

[0090]

[0091]

[0092] Example 3 The reaction conditions of laser thermal cracking are shown in Table 7.

[0093] Table 12

[0094] Carbon dioxide laser power, W 130 Irradiation time, s 5 Sample mass, mg 3.19 pyrolysis atmosphere Argon CO2 laser mode continuous

[0095] The sample temperature of the laser thermal cracking in Example 3 is shown in Table 13.

[0096] Table 13

[0097]

[0098]

[0099] The gas product yield of the laser thermal cracking of Example 3 is shown in Table 14.

[0100] Table 14

[0101] gas product Yield, % C2H4 30.21 C2H6 0.42 C2H2 3.41 CH4 16.62 H2 2.27 CO2 0.71 CO 0.86

[0102] Table 15 shows the propert...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Poweraaaaaaaaaa
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a method for pyrolyzing a carbonaceous material by using laser as a heat source and carrying out rapid quantitative analysis on a pyrolysis product, so that the analysis and detection requirements of high-temperature rapid pyrolysis of the carbonaceous material are met, the pyrolysis property of the carbonaceous material under a high-temperature condition is reasonably represented, and the industrial application analysis requirements of the carbonaceous material under certain extreme conditions are met. The method integrates a reaction section comprising a laser and a reactor and a detection section to improve detection efficiency, sensitivity and accuracy. The reactor has high-temperature air tightness, the temperature in the reactor can be measured, the accurate mass of a sample and residues after reaction can also be measured, and the residues can be conveniently collected for other analysis. Pyrolysis products can directly enter the detection part to be detected, and the detection part can accurately detect pyrolysis gas-phase products. The detection and analysis method has the advantages of high speed, small sample amount, high precision, high sensitivity and the like, different pyrolysis conditions of the carbonaceous material can be simulated, the pyrolysis property under the conditions can be quantitatively analyzed, and an analysis and detection basis is provided for the pyrolysis process under extreme conditions such as plasma cracking.

Description

technical field [0001] The invention relates to a laser pyrolysis technology, in particular to a method for pyrolyzing solid and liquid organic matter under high temperature conditions and analyzing and detecting the products of each phase. Background technique [0002] Pyrolysis reaction refers to a series of decomposition reactions that occur when a substance is heated. The physical and chemical properties of the reactant can be studied by using the pyrolysis reaction, which helps to distinguish the state of the reactant during the reaction process. Liquid organic matter is an effective means to study its composition and physical and chemical properties, and analyze its pyrolysis products. [0003] The composition of pyrolysis products depends on the physical and chemical properties of solid and liquid organic matter itself, as well as reaction conditions such as temperature, heating rate, and gas atmosphere. The mechanism of thermal cracking of most solid liquids is very...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N30/02G01N30/12G01N27/64
CPCG01N30/02G01N30/12G01N27/62G01N2030/045G01N2030/125
Inventor 王龙元
Owner 海南锋测生物科技有限公司