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Multi-chamber fluidized bed device for converting solid fuel chemistry chains

A multi-chamber fluidized bed, solid fuel technology, applied in fluidized bed combustion equipment, fuels burned in a molten state, combustion types, etc., can solve the problem of reducing heat transfer and utilization efficiency, increasing the difficulty of reactor operation, and unfavorable gasification. Reaction and other problems, to achieve the effects of convenient operation, simple structure and reasonable heat utilization

Active Publication Date: 2016-12-07
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing devices use a single chamber for the fuel reactor. In order to solve the problem of insufficient solid fuel reaction, it is usually necessary to connect a carbon capture device after the combustion reactor, which increases the difficulty of the operation of the reactor. On the other hand, the fuel The reactor and the air reactor are connected by a flow control valve (looping seal), and the heat generated by the air reactor is mainly carried by the solid carrier to the fuel reactor, which greatly reduces the heat transfer and utilization efficiency
Especially for the solid fuel gasification reaction is an endothermic reaction, which is not conducive to the gasification reaction

Method used

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  • Multi-chamber fluidized bed device for converting solid fuel chemistry chains
  • Multi-chamber fluidized bed device for converting solid fuel chemistry chains
  • Multi-chamber fluidized bed device for converting solid fuel chemistry chains

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The multi-chamber fuel reactor 6 described in this embodiment is a side-by-side horizontal eye shape, and the middle is separated by two baffles. The lower end of the I chamber and the II chamber of the multi-chamber fuel reactor 6 communicates, and the upper end of the II chamber communicates with the III chamber. , when in use, water vapor is used as the fluidizing medium of the multi-chamber fuel reactor 6, and the material is CaSO 4 Oxygen Carrier and Shenmu Coal, CaSO 4 The mass ratio of carbon in Shenmu coal is 1:2, and the CaSO 4 The Heshenmu coal enters the I chamber of the multi-chamber fuel reactor 6 from the solid feeding device 7, and the carbon conversion rate is increased from 75% of the existing single-chamber fuel reactor to more than 95%.

Embodiment 2

[0031] The multi-chamber fuel reactor 6 described in this embodiment is divided into a three-chamber structure by a baffle, the three chambers of the multi-chamber fuel reactor 6 and the air reactor 5 are distributed in a square shape, and the air reactor 5 and the multi-chamber fuel reactor 6 There is no communication between the I chambers, the upper end of the I chamber and the II chamber of the multi-chamber fuel reactor 6 communicates, the II chamber of the multi-chamber fuel reactor 6 communicates with the lower end of the III chamber, and the multi-chamber fuel reactor 6III chamber and the air reactor return material The device 12 is connected to each other. When in use, water vapor is used as the fluidization medium of the multi-chamber fuel reactor 6 to carry out the coal chemical loop gasification reaction, and the material is Fe 2 o 3 Oxygen carrier and Shenmu coal, the condensed gas composition obtained from the upper part of the second cyclone separator 4 is: CO=2...

Embodiment 3

[0033] Present embodiment increases the 3rd cyclone separator 14 on the basis of embodiment 2, does not communicate between air reactor 5 and I room of multi-chamber fuel reactor 6, the I room of multi-chamber fuel reactor 6 and the upper end of II room Communication, between the II chamber and the III chamber is connected by the return device 12, the III chamber and the air reactor 24 are also connected by the return device 12, during use, the material Fe 2 o 3 Oxygen carrier, CaO and Shenmu coal enter the I chamber of the multi-chamber fuel reactor 6 from the solid feeder 7, and the water vapor enters the first gas pre-distribution chamber 9 as the fluidizing medium, and then passes through the billionth gas distribution plate 8 to make the materials Fluidization, with the fluidization of the material, the material passes through the II room and enters the III room through the return device, and the oxygen carrier and Shenmu coal are carried out in the I room and the II room...

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Abstract

The invention belongs to the technical field of chemical process equipment and relates to a multi-chamber fluidized bed device for converting solid fuel chemistry chains. A multi-chamber fuel reactor is divided into a chamber I, a chamber II and a chamber III through baffles. An air reactor and the chamber I of the multi-chamber fuel reactor are partitioned through a partition plate and communicated through a material return device. The top end of the air reactor is connected with a first cyclone separator. The lower end of the first cyclone separator and the lower end of a second cyclone separator are communicated with the multi-chamber fuel reactor through a first flowing control device and a second flowing control device correspondingly. The bottom of the multi-chamber fuel reactor is provided with a first gas pre-distribution chamber and a second gas pre-distribution chamber. A first gas distribution plate is arranged between the multi-chamber fuel reactor and the first gas pre-distribution chamber, and a second gas distribution plate is arranged between the multi-chamber fuel reactor and the second gas pre-distribution chamber. A solid feeder is arranged on one side of the multi-chamber fuel reactor. The multi-chamber fluidized bed device is simple in structure, convenient to operate and low in cost, the raw materials are easy to obtain, the reaction is full, and the heat utilization rate is high.

Description

Technical field: [0001] The invention belongs to the technical field of chemical process equipment, and relates to a multi-chamber fluidized bed device for chemical chain conversion of solid fuels such as coal and biomass. Background technique: [0002] Chemical-Looping technology (Chemical-Looping technology) provides a new idea for the clean and efficient utilization of energy. This technology can achieve CO 2 internal separation; it can realize cascaded utilization of energy and improve the total thermal efficiency of the system; at the same time, it can also control thermal and fuel NO x generate. [0003] The principle of chemical chain technology is to use a solid carrier (mainly transition metal oxides and CaO) to decompose a given chemical reaction into an oxidation / reduction reaction or an adsorption / desorption reaction, where the solid carrier can transfer between the two reactions Oxygen / carbon dioxide and heat, taking the chemical looping combustion process as ...

Claims

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Application Information

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IPC IPC(8): F23C10/10F23C10/18F23C10/28
CPCF23C10/10F23C10/18F23C10/28
Inventor 刘永卓郭庆杰万奇顺王博张秀丽
Owner QINGDAO UNIV OF SCI & TECH
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