Gasification burner device

A pulverized coal and sprinkler technology, which is applied in the details of gasification device, gasification process, granular/powder fuel gasification, etc., can solve the problems of uneven circumferential distribution of pulverized coal, increased system control difficulty, and increased cost, etc. Achieve the effect of eliminating the poor uniform distribution effect of pulverized coal, improving the uniform distribution effect, and increasing kinetic energy

Pending Publication Date: 2017-08-22
CHANGZHENG ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned gasification burner device has the problem of uneven circumferential distribution of pulverized coal ejected from the nozzle
Although increasing the number of pulverized coal delivery pipes 1 and uniformly distributing them along the circumferential direction of the annular pulverized coal cavity 2 can improve the circumferential distribution effect of pulverized coal ejected from the gasification burner device, but its cost is greatly increased, and the multi-way pulverized coal Coal delivery pipe 1 needs to be controlled independently, and the difficulty of system control is also greatly increased

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] refer to image 3 , Figure 5 and Figure 6 , the pulverized coal nozzle in this embodiment is an elbow whose pipe diameter gradually decreases from top to bottom, the lower end of the elbow is the lower end pulverized coal nozzle 31, and at least one side opening Coal nozzle 32, and said side-opened pulverized coal nozzle 32 is a slanted port that gradually slopes outward along the airflow advancing direction.

[0036] Moreover, this embodiment also provides a gasification burner device including the above-mentioned spray head 3 . Specifically, the gasification burner device also includes a pulverized coal delivery pipe 1 and an annular pulverized coal cavity 2 . Wherein, each part of this gasification burner device can specifically include the following:

[0037] 1) The nozzle 3 is an elbow whose pipe diameter gradually decreases from top to bottom, and the upper end of the elbow communicates with the pulverized coal delivery pipe 1, and the lower end is the lower...

Embodiment 2

[0051] The existing gasification burner device and the gasification burner device provided by the embodiments of the present invention are subjected to the following comparative experiments:

[0052] Divide the pulverized coal ejected from the nozzle of the gasification burner device into 12 equal parts in the circumferential direction, and count the proportion of pulverized coal in each part, so as to obtain the following Figure 7 The comparison diagram of the uniform distribution effect of the powder sprayed by the gasification burner device shown.

[0053] Figure 7 The flatter the curve in the figure, the better the uniform distribution of the powder around the circumference. Depend on Figure 7 It can be seen that the gasification burner device provided by the embodiment of the present invention is much better than the existing gasification burner device in the uniform distribution of pulverized coal sprayed from the nozzle in the circumferential direction.

Embodiment 3

[0055] The existing gasification burner device and the gasification burner device provided by the embodiment of the present invention were subjected to the following comparative experiments: using one pulverized coal conveying pipe and three pulverized coal conveying pipes to feed pulverized coal respectively, and detecting the relative standard deviation , so that the results shown in the following table 1 can be obtained:

[0056] Table 1 The gasification burner device of the prior art and the effect comparison of the gasification burner device of the present invention

[0057]

[0058] It can be seen from Table 1 that, compared with the existing gasification burner, the relative standard deviation of the gasification burner device provided by the embodiment of the present invention can be reduced from 80.9% when one pulverized coal delivery pipe is used to feed the pulverized coal. to 17.2%, and when using the three-way pulverized coal delivery pipe to feed the powder, t...

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Abstract

The invention discloses a pulverized coal spray head. The spray head is an elbow pipe with the pipe diameters gradually reduced from top to bottom, the lower end of the elbow pipe is provided with a lower end pulverized coal nozzle (31), the side wall of the elbow pipe is provided with at least one open-sided pulverized coal nozzle (32) which is a bevel connection gradually inclining outwards in the airflow forward direction. The invention further discloses a gasification burner device containing the spray head. The gasification burner device comprises a pulverized coal delivery pipe and an annular pulverized coal cavity which comprises an inner pipe, an outer pipe and a variable diameter pipe; the inner pipe is sleeved with the variable diameter pipe which is sleeved with the outer pipe, a second annular cavity is formed between the inner pipe and the variable diameter pipe, and a third annular cavity is formed between the variable diameter pipe and the outer pipe. Accordingly, the uniform distributing effect of pulverized coal sprayed out of the nozzles of the gasification burner device in the circumferential direction can be greatly improved, the cost is low, and the control difficulty is low.

Description

technical field [0001] The invention relates to the technical field of coal entrained bed gasification, in particular to a pulverized coal nozzle and a gasification burner device containing the nozzle. Background technique [0002] my country's energy structure has been "coal-based" for a long time, but with the increasingly prominent environmental protection issues, it is imperative to improve the efficiency of coal utilization and reduce the damage to the environment and ecology during the process of coal utilization. Clean coal technology can effectively reduce the emission of pollutants and improve the utilization efficiency of coal in the process of processing, combustion and conversion. Coal gasification technology is the core technology of clean coal conversion. Therefore, coal gasification technology is the development of coal as raw material. Key technologies for bulk chemical products and combined cycle power generation. [0003] At present, the industrialized coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/50
CPCC10J3/506C10J2200/152C10J2300/093
Inventor 魏兆福周泉郭进军葛志红
Owner CHANGZHENG ENG
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