Method for preparing oxygen carrier particles for restraining release of sulfur-containing gas

A technology of gas release and oxygen carrier, applied in separation methods, chemical instruments and methods, and separation of dispersed particles, can solve problems such as unfriendly use environment, complex equipment structure, and complicated process, and achieve safe and reliable processes and equipment , Good sulfur fixation efficiency, environment-friendly effect

Inactive Publication Date: 2013-05-08
QINGDAO UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To sum up, the existing oxygen carrier sulfur suppression technology generally has the disadvantages of complex process of mixing sulfur fixer and oxygen carrier particles, high production cost, poor sulfur suppression effect, complicated equipment structure, and unfriendly use environment.

Method used

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  • Method for preparing oxygen carrier particles for restraining release of sulfur-containing gas
  • Method for preparing oxygen carrier particles for restraining release of sulfur-containing gas
  • Method for preparing oxygen carrier particles for restraining release of sulfur-containing gas

Examples

Experimental program
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Effect test

Embodiment 1

[0019] 5gCaSO 4 With 40g mass percent concentration of 20% CaCl 2 and Na 2 CO 3 The solution was mixed, and 1 g of surfactant lauryl polyoxyethylene ether C was added 12 h 25 O(CH 2 CH 2 O) 9 H, stir well, prepare the paste and let it stand for 6 hours; move the paste into a glass forming device and squeeze it into granules; the granulated granules are placed in the air to dry naturally for 6 hours, and then quickly move them into a constant temperature In the drying oven, after drying at 150°C for 10 hours, take it out, put it in a muffle furnace and calcinate at 300°C for 6 hours to obtain the oxygen carrier particles after adding the sulfur fixing agent. Electron scanning electron microscope (SEM) photo figure 1 Show the oxygen carrier that present embodiment makes, figure 2 Show the particles of the oxygen carrier prepared in this embodiment after multiple cycles of reaction, image 3 The thermal analysis curve of the oxygen carrier prepared in this example in 2...

Embodiment 2

[0021] 2.75gCaSO 4 With 40g mass percent concentration of 20% CaCl 2 and Na 2 CO 3 The solution was mixed, and 1 g of surfactant lauryl polyoxyethylene ether C was added 12 h 25 O(CH 2 CH 2 O) 9 H, stir well, prepare the paste and let it stand for 6 hours; transfer the paste into a glass syringe and squeeze it into granules; the granulated granules are placed in the air to dry naturally for 6 hours, and then quickly move them into constant temperature drying In the box, take it out after drying at a constant temperature of 150°C for 10 hours, and place it in a muffle furnace for calcination at 600°C for 12 hours to obtain the oxygen carrier particles after adding the sulfur-fixing agent; scanning electron microscope (SEM) photos Figure 4 The photos of the oxygen carrier particles prepared in this example are shown.

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Abstract

The invention belongs to the technical field of the preparation of oxygen carrier particles in a chemical chain system and relates to a method for preparing the oxygen carrier particles for restraining the release of sulfur-containing gas in a reaction of an oxygen carrier and a fuel. The method comprises the following steps of: gradually adding CaSO4 or NiO serving as a raw material into lauryl alcohol polyoxyethylene ether serving as a surfactant; mixing the mixture and solution prepared from CaCl2 and Na2CO3 in a molar ratio of 1:1; fully and uniformly stirring to obtain a sticky paste andpouring the paste into molding equipment of a 50-ml injector for granulation by extruding; and naturally drying the particles in the air, putting the dried particles into a thermostatic drying oven for drying at a constant temperature and putting the dried particles into a muffle furnace for calcining to obtain the oxygen carrier particles into which a sulfur fixing agent is added. The method hasthe advantages of capability of realizing effective combination of a CaO component and an oxygen carrier component and realizing the release of SO2 gas in a chemical adsorption and oxidation process by using the sulfur fixing agent, large particle surface area, good sulfur fixing effect, simple, convenient and practical process, low production cost, high efficiency, simple and convenient operation of a uniform and stable chemical system, safe and reliable process and equipment and environmental friendliness.

Description

Technical field: [0001] The invention belongs to the technical field of preparation of oxygen carrier particles in a chemical chain system, and relates to an application technology of composite oxygen carrier particles based on calcium sulfate particles, especially a method for inhibiting the release of sulfur-containing gas in the reaction between oxygen carrier and fuel Preparation method of oxygen carrier particles. Background technique: [0002] Chemical looping technology is a new type of energy conversion technology, and its specific applications include chemical looping combustion, chemical looping gasification, etc. During the combustion or gasification of fuel, the transfer of oxygen atoms from oxygen to fuel is carried out by In addition, the oxygen carrier also transfers heat between the reactors, acting as a heat carrier. Chemical looping combustion can achieve relatively pure CO without additional gas separation device 2 Separation and capture, while reducing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L10/00B01D53/81B01D53/50
Inventor 郭庆杰郭宝贵田红景张鸿林王许云张涛刘永卓金刚刘新民路文学张新凤李磊付进军刘可张大晶李彩艳
Owner QINGDAO UNIV OF SCI & TECH
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