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

A method for removing polycyclic aromatic hydrocarbons in plant charcoal powder

A technology of polycyclic aromatic hydrocarbons and plant charcoal, which is applied in the direction of chemical instruments and methods, carbon compounds, carbon preparation/purification, etc. It can solve the problems of difficult removal, unsatisfactory effect, slow speed, etc., and achieves remarkable effect and simple operation , the effect of low cost

Active Publication Date: 2020-12-01
浙江旺林生物科技有限公司
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polycyclic aromatic hydrocarbons (PAHs) are volatile hydrocarbons produced when coal, petroleum, wood, tobacco, organic polymer compounds and other organic substances are incompletely burned, and are important environmental and food pollutants; more than 200 kinds of PAHs have been found so far , a considerable part of which is carcinogenic, and polycyclic aromatic hydrocarbons are stable in structure and difficult to remove. At present, the method of microbial degradation is used to remove polycyclic aromatic hydrocarbons, but this method is slow and the effect is not very ideal.

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
  • A method for removing polycyclic aromatic hydrocarbons in plant charcoal powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for removing polycyclic aromatic hydrocarbons in plant charcoal powder, the method for removing polycyclic aromatic hydrocarbons may further comprise the steps:

[0032] (1) Spread the quantitative plant charcoal powder on the tray first. The thickness of the plant charcoal powder on the tray is 10 mm, and then put multiple trays with powder into the removal furnace, and the trays are placed in the removal furnace in layers. Inside;

[0033] (2) Then the air in the removal furnace is pumped out to form a vacuum state in the removal furnace;

[0034] (3) Then heat and remove the furnace, so that the temperature in the removal furnace continues to rise, and in the process of heating up, fill the quantitative air into the removal furnace;

[0035] (4) When the temperature rises to 350° C., keep it warm for 3 hours to make the plant charcoal fully react, and remove the phenanthrene and naphthalene in the plant charcoal by high temperature.

[0036] Further, the r...

Embodiment 2

[0044] Embodiment 2: a kind of method of removing polycyclic aromatic hydrocarbons in plant charcoal powder, the method for removing polycyclic aromatic hydrocarbons comprises the following steps:

[0045](1) Spread the quantitative plant charcoal powder on the tray first, the thickness of the plant charcoal powder on the tray is 20 mm, then put multiple trays with powder into the removal furnace, and place the trays in layers in the removal furnace Inside;

[0046] (2) Then the air in the removal furnace is pumped out to form a vacuum state in the removal furnace;

[0047] (3) Then heat and remove the furnace, so that the temperature in the removal furnace continues to rise, and in the process of heating up, fill the quantitative air into the removal furnace;

[0048] (4) When the temperature rises to 400° C., keep it warm for 5 hours to make the plant charcoal fully react, and remove the phenanthrene and naphthalene in the plant charcoal by high temperature.

[0049] Furth...

Embodiment 3

[0055] Embodiment 3: a kind of method of removing polycyclic aromatic hydrocarbons in plant charcoal powder, the method for removing polycyclic aromatic hydrocarbons comprises the following steps:

[0056] (1) Spread the quantitative plant charcoal powder on the tray first. The thickness of the plant charcoal powder on the tray is 30 mm, and then put multiple trays with powder into the removal furnace, and the trays are placed in the removal furnace in layers. Inside;

[0057] (2) Then the air in the removal furnace is pumped out to form a vacuum state in the removal furnace;

[0058] (3) Then heat and remove the furnace, so that the temperature in the removal furnace continues to rise, and in the process of heating up, fill the quantitative air into the removal furnace;

[0059] (4) When the temperature rises to 410° C., keep it warm for 5 hours to make the plant charcoal fully react, and remove the phenanthrene and naphthalene in the plant charcoal by high temperature.

[...

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for removing polycyclic aromatic hydrocarbon in plant carbon powder. The method comprises the following steps: firstly, spreading a fixed amount of plant carbon powder on a tray, wherein the thickness of the plant carbon powder on the tray is 10-30mm; secondly, putting a plurality of trays with the powder into a removal furnace at different layers; sucking out all air inside the removal furnace to achieve a vacuum state in the removal furnace; heating the removal furnace for continuously increasing the temperature inside the removal furnace, and introducing a fixed amount of air into the removal furnace in the heating process; keeping the temperature for 3-5 hours when the temperature is increased to 350-410 DEG C, enabling the plant carbon powder to react sufficiently, and removing phenanthrene and naphthalene inside the plant carbon powder through high temperature.

Description

technical field [0001] The invention relates to a method for removing polycyclic aromatic hydrocarbons in plant charcoal powder. Background technique [0002] Polycyclic aromatic hydrocarbons (PAHs) are volatile hydrocarbons produced when coal, petroleum, wood, tobacco, organic polymers and other organic substances are incompletely burned, and are important environmental and food pollutants; more than 200 kinds of PAHs have been found so far , a considerable part of which is carcinogenic, and polycyclic aromatic hydrocarbons are stable in structure and difficult to remove. At present, the method of microbial degradation is used to remove polycyclic aromatic hydrocarbons, but this method is slow and the effect is not very satisfactory. [0003] Since a large amount of PAHs was found in hammer handles in Germany in 2005, products containing PAHs have attracted public attention. Since then, such cases have continued to occur. In November 2007, the German ZEK-01-08 document mad...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/05C01B32/15C01B32/378
Inventor 程鸿财汪芳李凤娇姜嘉奇
Owner 浙江旺林生物科技有限公司