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Special reaction device for curing agent for repair of soil heavy metal pollution and production method thereof

A technology for repairing soil and reaction devices, applied in chemical instruments and methods, chemical/physical/physicochemical fixed reactors, chemical/physical processes, etc., can solve problems such as increasing the hardness of soil aquifers

Active Publication Date: 2016-10-12
毓美生态环境科技(北京)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of aluminum salts as passivators has the advantages of high efficiency and stability, but the suitable pH range is between 6-8, and overacid or overalkali will cause the release of phosphorus; iron salts are non-toxic as passivators, but Susceptible to changes in redox conditions and pH; application of calcium salts increases soil aquifer hardness, while CO 2 Calcium carbonate and hydroxyapatite dissolution will increase with increasing levels or decreasing pH, releasing sorbed lead into soil aquifers

Method used

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  • Special reaction device for curing agent for repair of soil heavy metal pollution and production method thereof
  • Special reaction device for curing agent for repair of soil heavy metal pollution and production method thereof
  • Special reaction device for curing agent for repair of soil heavy metal pollution and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Manufacture the esterification reaction plate 3-1-1 of the present invention according to the following steps, and in parts by weight:

[0061] Step 1: Add 786 parts of ultrapure water with a conductivity of 3.22μS / cm into the reactor, start the stirrer in the reactor at a speed of 46rpm, start the heating pump, and raise the temperature in the reactor to 56°C; add in order 70 parts of 4-isopropyl-2-propenyltoluene, 84 parts of dextro-trans-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid, 2- 26 parts of 2-(4-morpholinyl)ethyl methyl-2-acrylate, stir until completely dissolved, adjust the pH value to 5.3, adjust the stirrer speed to 186rpm, the temperature is 87°C, and the esterification reaction is 9 hours ;

[0062] Step 2: Take 28 parts of 2,3,5,6-tetrafluorobenzyl (1R,3S)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate , 112 parts of (α-cyano-1-methyl)butenyl-2,2-dimethyl-3-(2,2-dichlorovinyl)cyclopropanecarboxylate are pulverized, and the...

Embodiment 2

[0067] Manufacture the esterification reaction plate 3-1-1 of the present invention according to the following steps, and in parts by weight:

[0068]Step 1: Add 1145 parts of ultrapure water with a conductivity of 4.23μS / cm into the reactor, start the stirrer in the reactor at a speed of 84rpm, start the heating pump, and raise the temperature in the reactor to 76°C; add in sequence 113 parts of 4-isopropyl-2-propenyltoluene, 114 parts of dextro-trans-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid, 2- 53 parts of 2-(4-morpholino)ethyl methyl-2-acrylate, stir until completely dissolved, adjust the pH value to 6.4, adjust the speed of the agitator to 225rpm, the temperature is 127°C, and the esterification reaction takes 18 hours ;

[0069] Step 2: Take 52 parts of 2,3,5,6-tetrafluorobenzyl (1R,3S)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate , 195 parts of (α-cyano-1-methyl)butenyl-2,2-dimethyl-3-(2,2-dichlorovinyl)cyclopropanecarboxylate are pu...

Embodiment 3

[0074] Manufacture the esterification reaction plate 3-1-1 of the present invention according to the following steps, and in parts by weight:

[0075] Step 1: Add 1561 parts of ultrapure water with a conductivity of 5.62μS / cm into the reactor, start the stirrer in the reactor at a speed of 108rpm, start the heating pump, and increase the temperature in the reactor to 89°C; add in sequence 156 parts of 4-isopropyl-2-propenyl toluene, 144 parts of dextro-trans-2,2-dimethyl-3-(2-methyl-1-propenyl) cyclopropanecarboxylic acid, 2- 78 parts of 2-(4-morpholino)ethyl methyl-2-acrylate, stir until completely dissolved, adjust the pH value to 7.2, adjust the stirrer speed to 268rpm, the temperature is 148°C, and the esterification reaction takes 28 hours ;

[0076] Step 2: Take 79 parts of 2,3,5,6-tetrafluorobenzyl (1R,3S)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate , 269 parts of (α-cyano-1-methyl)butenyl-2,2-dimethyl-3-(2,2-dichlorovinyl)cyclopropanecarboxylate are pul...

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PUM

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Abstract

The invention discloses a special reaction device for a curing agent for repair of soil heavy metal pollution and a production method thereof. The reaction device comprises a sealing cover, a sealing lock, a reaction tank, a cleaning door, a finished product storage device, a finished product discharge solenoid valve, a reaction exhaust gas discharge solenoid valve, a reaction exhaust gas collecting tank, a control device and a finished product liquid level detector; a reaction raw material after crushing enters the reaction tank and generates a synthesis effect with a catalyst; generated reaction exhaust gas enters the reaction exhaust gas collecting tank through a pipeline and is collected and stored, a finished product generated in the synthesis process is discharged through the finished product storage device, and residues obtained after reaction and generated after the synthesis effect are manually cleaned through the cleaning door. The special reaction device for the curing agent for repair of soil heavy metal pollution has the advantages of energy saving, environmental protection, simple structure, high automation degree and high synthetic speed.

Description

technical field [0001] The invention belongs to the field of curing agent treatment and application, and in particular relates to a special reaction device for curing agent for repairing soil heavy metal pollution. Background technique [0002] Soil heavy metal pollution is currently an important source of groundwater pollution. Lead and zinc are the main factors leading to soil heavy metal pollution. It is generally believed that soil lead and zinc content exceeding 0.02mg / L may lead to soil heavy metal pollution. The sources of lead and zinc in soil include exogenous sources and endogenous sources. After the exogenous pollution is effectively controlled, the weakly bound phosphorus, lead-bound phosphorus, and organic phosphorus in the soil that are easily affected by the environment will change with environmental conditions (such as Temperature, pH, dissolved oxygen, oxidation-reduction potential, etc.) are gradually released into the soil aquifer, forming endogenous pollu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/24
CPCB01J19/248
Inventor 梁峙梁骁
Owner 毓美生态环境科技(北京)有限公司
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