Ammonia decontamination agent and preparation method thereof

A technology of ammonia cleaning and fluorine surfactant, which is applied in the field of ammonia decontamination agent and its preparation, can solve the problems of high corrosiveness, limited applicability, and damage to metal equipment such as decontamination equipment, and achieve low corrosiveness and decontamination The effect of high efficiency and good decontamination efficiency

Inactive Publication Date: 2011-05-18
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, dilute hydrochloric acid solution is highly corrosive, and it is easy to cause damage to metal instruments such as decontamination equipment, so the applicability is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: Ammonia decontaminant containing soluble metal chloride salt prepared at 25°C

[0017] Under ambient conditions at room temperature 25°C, 1.00kg MgCl 2 ·6H 2 O, 0.70kg FeCl 3 ·6H 2 O and 1.00 kg AlCl 3 ·6H 2 Dissolve O in 4.5L of water, stir for 5 minutes, add 0.10kg of F-4 fluorosurfactant, stir until completely dissolved, then add 0.90kg of ethylene glycol, stir until uniform, and obtain yellow transparent and clear ammonia decontamination agent solution.

[0018] Tested by a pH meter, the pH value of the ammonia decontamination agent is 5.95; the solution remains clear after being left open in the air for 24 hours, and the pH value changes within ±0.1.

[0019] Put the ammonia decontaminant solution in a 6.0L decontaminant storage tank, pressurize it to 2.0Mpa, and release it to a 1.0m area with an ammonia gas concentration of 0.4kg / L through a fine water mist nozzle at a flow rate of 2.0L / min. 3 Simulate the decontamination space, the ammonia conce...

Embodiment 2

[0021] Example 2: Ammonia Decontaminant Containing Soluble Metal Chloride Salt Prepared at -5°C

[0022] Under the ambient condition of -5°C, add 1.2kg of ethylene glycol into 4.5L of water, stir well, then add 0.8kg of MgCl 2 ·6H 2 O, 1.0kg FeCl 3 ·6H 2 O and 0.9 kg AlCl 3 ·6H 2 O was dissolved in the prepared mixed solution of ethylene glycol and water. After it was completely dissolved, 0.015kg of F-4 fluorosurfactant was added and stirred until it was completely dissolved to obtain a yellow transparent and clear ammonia decontamination solution.

[0023] The pH value of the ammonia decontamination agent was tested by a pH meter, and the pH value was 5.68; the solution remained clear after being left open in the air for 24 hours, and the pH value changed within ±0.1, and no freezing phenomenon was observed.

[0024] Put the ammonia decontaminant solution in a 6.0L decontaminant storage tank, pressurize it to 2.0Mpa, and release it to 1.0m through a fine water mist nozz...

Embodiment 3

[0026] Example 3: Ammonia Decontaminant Containing Soluble Sulfates

[0027] Under ambient conditions at room temperature 25°C, add 1.0kg of ethylene glycol into 4.5L of water and stir evenly; then add 1.0kg of MgSO 4 ·6H 2 O, 0.6kg FeCl 3 ·6H 2 O and 3.0kg Al 2 (SO 4 ) 3 18H 2 O was dissolved in the prepared mixed solution of ethylene glycol and water, and then 0.01kg of F-4 fluorosurfactant was added, stirred until completely dissolved, and a yellow transparent and clear ammonia decontaminant solution was obtained.

[0028] Tested by a pH meter, the pH value of the ammonia decontamination agent is 6.02; the solution remains clear after being left open in the air for 24 hours, and the pH value changes within ±0.1.

[0029] Put the decontaminant solution in a 6.0L decontaminant storage tank, pressurize it to 2.0Mpa, and release it to 1.0m through a fine water mist nozzle at a flow rate of 2.0L / min 3 In the simulated decontamination space where the ammonia gas concentra...

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PUM

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Abstract

The invention discloses an ammonia decontaminating agent and a preparation method thereof, and is characterized in that fluorinated surfactant of 0.05 to 0.20 percent and ethylene glycol of 5.0 to 15.0 percent are dissolved in water of 31.7 to 65.0 percent according to the mass percent accounting for a system; a soluble magnesium salt, a tervalent aluminum salt and a tervalent ferric salt are added in to lead the concentration of magnesium ion to be 0.50 to 0.92mol / L in the solution, lead the concentration of iron ion to be 0.30 to 0.53mol / L, and lead the concentration of aluminum ion to be 0.50 to 0.84mol / L; the solution is stirred until clarification is reached, so that the ammonia decontaminating agent is obtained. The raw material has low cost and is easy to obtain, and the configuration technology is simple; the decontaminating efficiency is high, and the decontaminating is thorough; the decontaminating agent has subacidity, thereby having small corrosiveness to a decontaminatingdevice; decontaminating products are a solid hydroxid and a soluble chloride salt, and have small influence to the decontaminating spot environment; the decontaminating agent has small surface tension and good fluidity, and is applied to various fine water mist decontaminating devices.

Description

technical field [0001] The invention relates to the field of hazardous chemical decontamination agents, in particular to an ammonia decontamination agent and a preparation method thereof. Background technique [0002] Ammonia is a widely used chemical raw material. Ammonia leakage may occur due to accidents during actual production and use. Ammonia is highly volatile and highly toxic. Once it leaks, it will easily lead to personnel poisoning, environmental pollution, damage to equipment and facilities, and even major accidents such as fire, explosion, and death, causing great harm to life and property. How to carry out emergency response immediately and effectively after ammonia leakage is of great significance to avoid further expansion of the accident, reduce casualties and environmental pollution. Correct decontamination is one of the key measures in the emergency treatment of ammonia leakage, and it is an effective means to fundamentally eliminate the hazards of ammoni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D3/33B01D47/06B01D53/14A62D101/45
Inventor 倪小敏廖光煊张宇金翔肖修昆蔡昕
Owner UNIV OF SCI & TECH OF CHINA
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