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Composition for removing carbon dioxide from mixed gas and method for decarbonizing flue gas

A composition and oxide technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of high desorption energy consumption, low desorption rate, slow absorption speed, etc., and achieve low desorption energy consumption and good effect , fast absorption effect

Active Publication Date: 2020-07-03
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the above-mentioned existing flue gas decarbonization absorbents contain CO 2 A series of problems such as slow absorption speed, low desorption rate, and high desorption energy consumption

Method used

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  • Composition for removing carbon dioxide from mixed gas and method for decarbonizing flue gas
  • Composition for removing carbon dioxide from mixed gas and method for decarbonizing flue gas
  • Composition for removing carbon dioxide from mixed gas and method for decarbonizing flue gas

Examples

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preparation example Construction

[0057] The present invention provides a method for preparing the flue gas decarbonization composition as described in the above technical solution, comprising:

[0058] The main absorbent, the activator, the desorption aid and water are mixed to obtain the flue gas decarbonization composition.

[0059] In the preparation method of the flue gas decarbonization composition provided by the invention, the flue gas decarbonization composition can be obtained by adding a main absorbent, an activator, and a desorption assistant into water.

[0060] When the corrosion inhibitor is also included, the main absorbent, the activator, the desorption aid, the corrosion inhibitor and water are mixed to obtain the flue gas decarbonization composition. That is, the flue gas decarbonization composition can be obtained by adding the main absorbent, the activator, the desorption aid and the corrosion inhibitor into the water.

[0061] When an antioxidant is also included, the flue gas decarboniz...

Embodiment 1

[0081] This example is used to illustrate the flue gas decarbonizer provided by the present invention.

[0082] (1) The composition of the simulated flue gas is (volume): CO 2 : 20.25%; O 2 : 8.27%; H 2 O: 10.12%; N 2 : 59.01, CO: 2.35%; trace sulfides and nitrogen oxides.

[0083] (2) Preparation of flue gas decarburizer

[0084] Add 120 grams of diazabicyclooctane, 30 grams of tetraethylenepentamine, 10 grams of citric acid, 5 grams of dodecyl hydroquinone, 3 grams of antimony potassium tartrate, and 2 grams of mono-oil imidazoline into 500 ml water, stirred evenly, and quantified to 1000 grams with distilled water, so as to obtain a flue gas decarburizer.

[0085] (3) Flue gas decarbonization

[0086] The described decarburizing agent prepared in (2) of 1000 grams is heated to 50 ℃, with micro-vacuum pump, decarburizing agent is sent in the packed tower that glass mesh ring is housed from the upper end of packed tower, the described decarburizing agent in (1) The abo...

Embodiment 2

[0095] This example is used to illustrate the flue gas decarbonizer provided by the present invention.

[0096] (1) The composition of the simulated flue gas is (volume): CO 2 : 20.25%; O 2 : 8.27%; H 2 O: 10.12%; N 2 : 59.01, CO: 2.35%; trace sulfides and nitrogen oxides.

[0097] (2) Preparation of flue gas decarburizer

[0098] Add 120 grams of diazabicyclooctane, 30 grams of diethylenetriamine, 10 grams of lactic acid, 5 grams of sodium anthraquinone disulfonate, 3 grams of vanadium pentoxide, and 2 grams of mono-oil imidazoline into 500 milliliters of water, Stir evenly, and quantify to 1000 grams with distilled water, thereby obtain the flue gas decarburizer.

[0099] Steps (3) and (4) were carried out in the same manner as in Example 1 for decarburization of flue gas, desorption of decarburizer and determination of absorption capacity, desorption amount and desorption rate, and the results are listed in Table 1.

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Abstract

The invention provides a smoke decarburization composition, the composition is prepared from 5-50 parts by weight of main absorbent, 0.1-20 parts by weight of activating agent, 0.1-5 parts by weight of desorption auxiliary agent and 25-95 parts by weight of water, wherein the main adsorbent is diazabicyclooctane; the activating agent is selected from one or a plurality of diethylenetriamine, tetraethylenepentamine, triethylene tetramine and triethylene diamine. The smoke decarburization composite provided by the invention adopts the diazabicyclooctane as the main adsorbent and takes the diethylenetriamine, the tetraethylenepentamine, or the triethylene diamine as the activating agent, and ingredients including the desorption auxiliary agent and the like are combined. Meanwhile, a specific proportion is combined to bring a good carbon dioxide removal effect, high CO2 adsorption volume, high adsorption speed, a high decarburization rate and low desorption energy consumption.

Description

technical field [0001] The invention relates to the technical field of gas separation and purification, in particular to a flue gas decarbonization composition and a flue gas decarbonization method. Background technique [0002] In recent decades, due to CO 2 Excessive emissions of excessive emissions have caused the temperature on the earth's surface to rise continuously, which has brought great harm to the environment. Various natural disasters have also intensified. The utilization of oil, coal and natural gas will produce CO 2 Various synthesizers in chemical, biological, energy, metallurgical and other industries, hydrogen energy preparation gas, biorefining exhaust gas, metallurgical and power plant exhaust gases, etc. also contain different concentrations of CO 2 , CO removal from the production link 2 It becomes an essential production process, reducing CO in terms of post-processing 2 The direct discharge of the pollutants is of great significance to the protecti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/14
CPCB01D53/1475B01D53/1493B01D2252/2053B01D2258/0283Y02A50/20Y02C20/40
Inventor 邱正秋黎建明王建山张小龙
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP