A kind of polymer chelating agent and preparation method thereof

A polymer chelating agent, acrylamide technology, applied in the direction of the protection device against harmful chemicals, etc., can solve a large number of problems, and achieve the effect of low drug cost, low landfill cost and remarkable effect

Active Publication Date: 2021-02-02
广东中科乐活环境科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] Incineration is to oxidize organic waste into inert gaseous substances and inorganic non-combustible substances under the conditions of high temperature and sufficient oxygen supply, forming stable and easy-to-handle solid residues, and the heat energy released during the incineration process can be recycled and used to generate electricity, etc., but Incineration produces a large amount of fly ash containing heavy metals

Method used

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  • A kind of polymer chelating agent and preparation method thereof
  • A kind of polymer chelating agent and preparation method thereof
  • A kind of polymer chelating agent and preparation method thereof

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preparation example Construction

[0032] The present invention also provides a kind of preparation method of polymer chelating agent, comprises the following steps:

[0033] A. Add 1 to 5 parts of thiourea, 40 parts of acrylamide and 100 parts of pure water into the reactor in sequence, and stir at 12°C until completely dissolved to obtain an aqueous solution of acrylamide;

[0034] B. Put 10 copies of CS 2 Add to the aqueous acrylamide solution obtained in step A, and continue to stir for 60 minutes below 20°C;

[0035] C. Heat up to 40°C and keep at a constant temperature for 1 hour;

[0036] D. Continue to heat up to 80°C, add 0.5-2 parts of sodium sulfite and 1-8 parts of ammonium persulfate simultaneously, react for 1 hour, cool down to room temperature, add 10 parts of 40% NaOH dropwise evenly, and stir at room temperature for 30 minutes , to obtain a polymer chelating agent.

[0037] Preferably, the step A is specifically:

[0038] Add 0.5-4 parts of thiourea, 40 parts of acrylamide and 100 parts of...

Embodiment 1

[0052] Prepare the preparation steps of polymer chelating agent solution:

[0053]A1. Add 0.05Kg of thiourea (1 part), 2Kg of acrylamide (40 parts) and 5Kg of pure water (100 parts) into the reactor in sequence, start stirring until completely dissolved to obtain an aqueous solution of acrylamide, and control the system temperature to 12°C during the process .

[0054] B1. Add 0.5Kg CS2 (10 parts) evenly into the aqueous solution of A, control the temperature not to exceed 20°C and keep stirring for 60 minutes;

[0055] C1. Heat up to 40°C and keep the temperature constant for 1 hour;

[0056] D1. Continue to heat up to 80°C, simultaneously add 0.025Kg sodium sulfite (0.5 part) and 0.05Kg ammonium persulfate (1 part) simultaneously, react for 1 hour, cool down and evenly add 10 parts of 0.5Kg40% NaOH dropwise, stir at room temperature for 30 Minutes end, obtain the polymer chelating agent solution 1 that can be used for the heavy metal chelation of heavy metal chelation, sta...

Embodiment 2

[0058] The component selection and preparation steps of this embodiment 2 are basically the same as those of embodiment 1, except that:

[0059] Thiourea: 0.1Kg;

[0060] Ammonium persulfate: 0.25Kg;

[0061] Sodium sulfite: 0.085Kg;

[0062] Obtain polymer chelating agent solution 2, set aside.

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Abstract

The invention discloses a polymer chelating agent and a preparation method thereof. The prepared polymer chelating agent can be used directly, is convenient and flexible, has low drug cost, is rapidly cured during use, has remarkable effect, is highly efficient and stable, and can be used in a wide range of applications. Pb, Cd, Cu, Zn, Ni, Hg and other heavy metals are solidified in the pH range, thereby eliminating heavy metal pollutants in the flue gas, and there is no volume increase during the chelation solidification process, and the landfill cost is low. The polymer chelating agent includes the following components: pure water, acrylamide, 40% NaOH, carbon disulfide CS 2 , Thiourea, ammonium persulfate, sodium sulfite.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a polymer chelating agent and a preparation method thereof. Background technique [0002] In daily life, people produce a lot of garbage every day, especially household garbage. One of the ways to deal with household garbage is incineration. [0003] Incineration is to oxidize organic waste into inert gaseous substances and inorganic non-combustible substances under the conditions of high temperature and sufficient oxygen supply, forming stable and easy-to-handle solid residues, and the heat energy released during the incineration process can be recycled and used to generate electricity, etc., but Incineration produces a large amount of fly ash containing heavy metals. Fly ash, also known as fly ash or soot, is a kind of environmentally hazardous waste. In severe cases, it will cause air pollution. If it enters the water, it will silt up the river, and the chemical substances co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F20/56A62D3/33
CPCA62D3/33A62D2101/08A62D2101/43C08F20/56
Inventor 金银悦
Owner 广东中科乐活环境科技有限公司
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