Method for preparing compound denitrification agent by means of waste organic solvents

The technology of organic solvent and denitrification agent is applied in the field of resource utilization of waste organic solvent to prepare composite denitrification agent, which can solve the problems of high production energy consumption, increased energy consumption, environmental pollution, and large pollution, and achieves low investment and energy saving in operation. Consumption and cost, the effect of promoting energy saving and emission reduction

Active Publication Date: 2016-07-27
湖南省小尹无忌环境能源科技开发有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, the use of ammonia or urea for environmental denitrification on the one hand competes with agriculture for fertilizers, and on the other hand indirectly increases energy consumption and environmental pollution due to the high energy consumption and pollution of ammonia and urine production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The raw material of hydrocarbon denitrification agent is taken from the waste water organic solvent in the painting workshop of an automobile factory, {after adding 8.5 times of water to the aqueous cleaning solvent (the components are ethylene glycol butyl ether 90%, dimethylethanolamine 10%) Produced when cleaning paint shop equipment and robot pipes}, the water content is 85wt%, and the amino denitrification agent is urea.

[0046] Preparation of composite denitrification agent with waste water organic solvent as the main raw material: filter waste water organic solvent to remove solid mechanical impurities, put it in a stirring tank, and the mass ratio is waste water organic solvent 75: amino denitrification agent (urea) 25 The proportion of ingredients, add urea under stirring, mix and dissolve evenly, and then the compound denitrification agent is obtained.

Embodiment 2

[0048] The raw material of hydrocarbon denitrification agent is taken from the waste water organic solvent in the painting workshop of an automobile factory, {after adding 8 times of water to the water-based cleaning solvent (the components are 80% ethylene glycol butyl ether and 20% dimethylethanolamine) Produced when cleaning painting workshop equipment and robot pipelines, the water content is 80wt%. The amino denitrification agent is ammonia water with a content of 27wt% commercially available, and commercially available water-soluble pigments apple green and lemon essence.

[0049] Preparation of composite denitrification agent with waste water organic solvent as the main raw material: filter waste water organic solvent to remove solid mechanical impurities, put it in a stirring tank, and the mass ratio is waste water organic solvent 55: amino denitrification agent (ammonia water) 45 Add ammonia water under stirring, mix and dissolve evenly, add a small amount of pigment a...

Embodiment 3

[0051] The raw material of hydrocarbon denitration agent is taken from the waste mixed organic solvent in the painting workshop of an automobile factory, {the mixture of waste water solvent and waste oil solvent (the solvent components are ethylene glycol butyl ether, butyl acetate, dimethylethanolamine, n- Butanol, aromatic hydrocarbon)}, moisture content 50.1%, amino denitrification agent selects commercially available urea and hydrazine hydrate, and emulsifier selects nonylphenol polyoxyethylene ether for use.

[0052] Preparation of composite denitrification agent with waste water organic solvent as the main raw material: waste organic solvent is filtered to remove solid mechanical impurities, placed in a stirring tank, and the mass ratio is waste organic solvent 54.2: amino denitrification agent (wherein urea 12, hydrated Hydrazine 3) 15: water 30: emulsifier 0.8 ratio ingredients, add water, emulsifier, urea, hydrazine hydrate sequentially under stirring, mix and dissolve...

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Abstract

A method for preparing a compound denitrification agent by means of waste organic solvents includes the steps that the waste water-borne organic solvents serve as raw materials to prepare the denitrification agent, solid mechanical impurities are removed from the waste organic solvents through filtering, 50-90 parts of the waste water-borne organic solvents and 10-50 parts of an amino denitrification agent are prepared by mass ratio and evenly mixed, and the compound denitrification agent is obtained.The technical method is simple, safe, practical, small in investment and low in processing and operation energy consumption, can completely solve the technical problem about disposal of waste organic solvents, especially waste organic solvents in the automobile manufacturing industry, and is free of secondary pollution.All material components in the waste organic solvents, including all hydrocarbon and water, are used in a recycling and harmless mode, resources can be saved, and environment-friendly and resource-saving society construction is facilitated.

Description

technical field [0001] The invention relates to the field of environmental protection and waste utilization, in particular to a method for resource utilization of waste organic solvents to prepare a composite denitrification agent. Background technique [0002] Organic solvents include water-based organic solvents and oil-based organic solvents. The waste generated from production to use is collectively referred to as waste organic solvents. In the National Hazardous Waste List (2008), waste organic solvents mainly involve the following waste categories: HW06( Organic solvent waste), HW41 (waste halogenated organic solvent), HW42 (waste organic solvent), HW05 (wood preservative waste), HW09 (hydrogen / water mixture), HW39 (phenol-containing waste), etc., involving many industries and generating volume Large, many types, wide distribution, complex composition. According to the industries involved, it can be divided into: 1) Waste organic solvents in the coating industry, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/79B01D53/56
CPCB01D53/56B01D53/79B01D2251/2062B01D2251/208
Inventor 尹无忌郭学益尹小林
Owner 湖南省小尹无忌环境能源科技开发有限公司
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