Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of tertiary amine functionalized proton type ionic liquid formula solution and its preparation method and application

An ionic liquid and functionalization technology, which is applied in the formulation solution of tertiary amine-functionalized proton-type ionic liquid and its preparation method and application field, can solve the problems of high energy consumption for desorption regeneration, unfavorable absorption capacity, large latent heat of volatilization, etc. Achieve the effect of high absorption rate, simple process and high absorption capacity

Active Publication Date: 2018-02-23
NANJING UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional organic amine solution has a series of disadvantages: it is volatile, causing a large loss of raw materials; it is highly corrosive, causing a certain degree of loss to equipment; it is easy to decompose at high temperature, making it easy to cause secondary pollution during the desorption process; with CO 2 The strong binding effect of water and the large latent heat of volatilization of water, the energy consumption of its desorption regeneration is also very large, etc.
But due to CO 2 It is an acid gas, and the alkalinity of the system is too low, which is not conducive to the maintenance of absorption capacity

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of tertiary amine functionalized proton type ionic liquid formula solution and its preparation method and application
  • A kind of tertiary amine functionalized proton type ionic liquid formula solution and its preparation method and application
  • A kind of tertiary amine functionalized proton type ionic liquid formula solution and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: Using N,N-dimethylethylenediamine (M mol), tetramethylpropylenediamine (N mol), acetic acid (M+N mol), and water as raw materials, prepare a total mass of 20g, ionic The total mass fraction of the liquid is a composite ionic liquid solution of 60% and M:N=0.5 and implements it to absorb CO 2 Applications.

[0022] (i) Preparation method: Weigh 8 g of purified water, 0.0227 mol of N,N-dimethylethylenediamine, and 0.0454 mol of tetramethylpropylenediamine in a stirring reactor. Turn on the stirring, and add 0.0681mol acetic acid dropwise into the reactor. After the dropwise addition was completed, the reaction was continued for 8 hours to obtain the target product composite ionic liquid solution.

[0023] (ii) Absorption of CO 2 Quantity: Take 4g of the above-mentioned composite ionic liquid solution and place it in an absorption kettle, and pass CO into it 2 . At room temperature, CO 2 Under the condition of equilibrium partial pressure of 0.1MPa, its sa...

Embodiment 2

[0026] Example 2: Using the raw materials and preparation methods of Example 1, we prepared aqueous solutions with a total mass fraction of ionic liquids of 70% and 80% respectively. At room temperature, they absorb CO 2 The effect is listed in Table 1. For convenience of comparison, we also list the results of Example 1 in the table. Among them, n(0.1 / 0.1MPa) means that the total gas pressure is 0.1Mpa, CO 2 When the equilibrium partial pressure is 0.1Mpa, the composite ionic liquid solution is effective for CO 2 Saturation absorption; t refers to CO 2 When the initial pressure is 0.1MPa, the time taken for the composite ionic liquid solution to reach 90% of the saturated (equilibrium) absorption; k refers to the apparent reaction rate constant; regeneration completion refers to the regeneration efficiency when the regeneration time is 20min.

[0027] Table 1. Effect of different formulation concentrations on absorption

[0028]

Embodiment 3

[0029] Embodiment 3: adopt the raw material and preparation method of embodiment 1, we have prepared the formula solution that total mass is 1000g, the total mass fraction of ionic liquid is 70%, wherein N,N-dimethylethylenediamine (M mol) The ratio of the amount of substance to tetramethylpropylenediamine (N mol) is 0.5, 0.25, 0.1, respectively. Use them for industrial waste gas at 40°C (0.1MPa, CO 2 Molar concentration is about 10%) in CO 2 The absorption separation, the absorption effect is listed in Table 2. n(0.01 / 0.1Mpa) means the total pressure of exhaust gas is 0.1Mpa, CO 2 Under the equilibrium partial pressure of 0.01Mpa, the composite ionic liquid solution is effective for CO 2 t refers to the time taken for the composite ionic liquid solution to reach 90% of the equilibrium absorption; k refers to the apparent reaction rate constant; regeneration completion refers to the regeneration efficiency when the regeneration time is 20 minutes.

[0030] Table 2. Effects...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
melting pointaaaaaaaaaa
Login to View More

Abstract

The invention provides a tertiary amine-functionalized protic ionic liquid formulated solution. The composite protic ionic liquid formulated solution contains two kinds of cations with the different structures, one kind of the cations are quaternary ammonium ions formed by performing single protonation on primary amine with a tertiary amine functional group, and the other kind of the cations are quaternary ammonium ions formed by performing single protonation on one of multiple tertiary amines, and organic acid radicals are adopted as anions. The synthesized ionic liquid formulated solution is easy to synthesize, low in cost, good in CO2 absorption effect, low in regeneration energy consumption, good in regeneration effect and very suitable for capturing CO2 contained in industrial energy resource gas and industrial waste gas. The invention further discloses a preparation method and application of the ionic liquid formulated solution.

Description

technical field [0001] The invention relates to a tertiary amine functionalized proton-type ionic liquid formula solution and its synthesis method and its ability to capture CO 2 aspects of application. Background technique [0002] With the gradual intensification of the global warming effect, the capture of CO 2 become an important focus of scientists. In industry, traditional organic amine solutions (such as MEA, DEA) are usually used to absorb CO 2 . However, the traditional organic amine solution has a series of disadvantages: it is volatile, causing a large loss of raw materials; it is highly corrosive, causing a certain degree of loss to equipment; it is easy to decompose at high temperature, making it easy to cause secondary pollution during the desorption process; with CO 2 The binding effect of water is strong and the latent heat of volatilization of water is large, and the energy consumption of its desorption regeneration is also very large. Therefore, resea...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/14
CPCB01D53/1475B01D2252/30Y02A50/20Y02C20/40
Inventor 吴有庭郑文涛胡兴邦
Owner NANJING UNIV