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Organic waste-gas absorbent and preparing method and use

A technology of organic waste gas and adsorbent, which is applied in the direction of separation methods, chemical instruments and methods, and other chemical processes, can solve problems such as difficulty in effectively functioning, expensive replacement of adsorbents, and high cost of activated carbon, achieving high market promotion potential, The effect of convenient raw material source and low operating cost

Active Publication Date: 2010-02-24
SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high cost of activated carbon, difficult regeneration and expensive sorbent replacement
At present, many industrial organic waste gas treatment measures are difficult to effectively play a role

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for preparing an organic waste gas adsorbent, comprising the steps of:

[0022] a. Drying the sludge to reduce the moisture content of the sludge to 5% (mass fraction) to obtain dry sludge.

[0023] b. Crush the dry sludge, take the dry sludge with a particle size of 0.01-1 mm and activate agent A: 40% ZnCl 2 (mass fraction, solvent is distilled water, the same below) and 35%H 2 SO 4 (ZnCl 2 and H 2 SO 4 Prepared according to the volume ratio of 2:1), mixed according to the solid-liquid ratio (mass ratio) of 1:2, heated in a constant temperature oscillator at 75°C for 2 hours, soaked and stirred at the same time, filtered and dried in an oven at 110°C for 12 hours . The filtrate can be recycled.

[0024] c. Put it into a tube-type high-temperature electric furnace, control the heating rate at 20°C / min, carry out pyrolysis and carbonization under the protection of an inert gas nitrogen atmosphere, the temperature is 560°C, and the activation time is 2h; a...

Embodiment 2

[0032] A method for preparing an organic waste gas adsorbent, comprising the steps of:

[0033] a. Drying the sludge to reduce the moisture content of the sludge to 5% (mass fraction) to obtain dry sludge.

[0034]b. Crush the dry sludge, take dry sludge with a particle size of 0.01-1 mm and activator A: 18% ZnCl 2 (mass fraction, solvent is distilled water, the same below) and 50%H 2 SO 4 (ZnCl 2 and H 2 SO 4 Prepared according to the volume ratio of 2:1), mixed according to the solid-liquid ratio (mass ratio) of 1:2, heated in a constant temperature oscillator at 75°C for 3 hours, soaked and stirred at the same time, filtered and dried in an oven at 110°C for 12 hours . The filtrate can be recycled.

[0035] c. Put it into a tube-type high-temperature electric furnace, control the heating rate at 20°C / min, carry out pyrolysis and carbonization under the protection of an inert gas nitrogen atmosphere, the temperature is 560°C, and the activation time is 2h; after takin...

Embodiment 3

[0043] A method for preparing an organic waste gas adsorbent, comprising the steps of:

[0044] a. Drying the sludge to reduce the moisture content of the sludge to 5% (mass fraction) to obtain dry sludge.

[0045] b. Crush the dry sludge, take the dry sludge with a particle size of 0.01-1 mm and activate agent A: 50% ZnCl 2 (mass fraction, solvent is distilled water, the same below) and 30%H 2 SO 4 (ZnCl 2 and H 2 SO 4 Prepared according to the volume ratio of 1:1), mixed according to the solid-liquid ratio (mass ratio) of 1:2, heated in a constant temperature oscillator at 75°C for 2 hours, soaked and stirred at the same time, filtered and dried in an oven at 110°C for 12 hours . The filtrate can be recycled.

[0046] c. Put it into a tube-type high-temperature electric furnace, control the heating rate at 20°C / min, carry out pyrolysis and carbonization under the protection of an inert gas nitrogen atmosphere, the temperature is 560°C, and the activation time is 2h; a...

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Abstract

The invention discloses an organic waste gas adsorbent and preparation method and application. Put the dry sludge of 0.01-3mm particle diameter and active medicine mixed according 1:2-5 solid-liquid ratio, and heating in the constant temperature oscillator while dipping,string, drying after filter; then put into the pipe high temperature electrical furnace to pyrolysis,charring, cooled at the roomtemperature to get the pyrolysis product; pyrolysis products will be followed by distilled water, activated B Pharmacy, 10 ~ 18% hydrochloric acid, rinse distilled water to neutral, then dry, get organic waste gas adsorbent. The advantages of use the invention to prepare organic waste gas adsorbents are that it has obvious oleophilic hydrophobicity; and is suitable for treatment of organic wastegas, convenient source of raw materials, low-cost.

Description

technical field [0001] The invention belongs to air pollution control technology and urban sewage treatment plant sludge treatment technology, in particular to an organic waste gas adsorbent and its preparation method and application. Background technique [0002] In recent years, with the rapid development of organic synthesis industry, petrochemical industry, material processing and spray paint and other industries, more and more organic compounds have entered the atmosphere. For example: benzene, phenols, polycyclic aromatic hydrocarbons, organic sulfides, organic chlorides and other volatile organic compounds, as well as odorous substances, not only stimulate human senses, but also have certain toxicity and cause "three causes" effect, seriously endangering the surrounding environment and the health of the people; some of which spread into the atmosphere will cause great harm to the human nerve and hematopoietic system, and some even have a photochemical reaction with NO...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30B01D53/02
Inventor 岑超平陈定盛唐志雄
Owner SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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