Beaming type gasification or combustion nozzle and its industrial use

A combustion nozzle and cluster-type technology, which is applied in the field of syngas preparation devices, can solve the problems of reduced carryover and shortened flames, etc.

Inactive Publication Date: 2007-03-14
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] From formula (2), the reduction of nozzle diameter will shorten the flame; from formula (1), the corresponding entrainment (entrainment) amount must be reduced

Method used

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  • Beaming type gasification or combustion nozzle and its industrial use
  • Beaming type gasification or combustion nozzle and its industrial use
  • Beaming type gasification or combustion nozzle and its industrial use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A methanol plant with an annual output of 100,000 tons uses coal-water slurry as raw material, and adopts a gasifier gasifier equipped with cluster gasification or combustion nozzles as shown in Figure 1 and Figure 2. The device produces 303 tons of methanol per day and processes coal every day. 400 tons;

[0045] Structural parameters of cluster gasification or combustion nozzles:

[0046] The outer diameter of the shell 5 is 260mm, and 7 nozzles are used. The diameter of the inner casing is 31×3mm, the diameter of the outer casing is 39.6×3, and the center-to-center distance between the outer casing 3 is 80mm; the nozzle height H is 2000mm, and the U-shaped piece The fixed position L of 1 and cover plate 2 is 40mm;

[0047] In the inner casing, the velocity of the coal slurry outlet is ~2m / s;

[0048] In the outer casing, the gas outlet velocity is ~100m / s;

[0049] The pressure of the gasification furnace is 4.0MPa, the gasification temperature is 1300°C, the ash ...

Embodiment 2

[0051] A methanol plant with an annual output of 1.1 million tons uses coal-water slurry as raw material, with a daily output of 3030 tons of methanol and 3 gasifiers with a daily coal processing capacity of 1500 tons. The gasification furnace adopts the gasification furnace equipped with cluster gasification or combustion nozzles as shown in Fig. 1 and Fig. 2;

[0052] Structural parameters of cluster gasification or combustion nozzles:

[0053] The outer diameter of the shell 5 is 400mm, and 13 nozzles are used. The diameter of the inner sleeve is 31×3mm, the diameter of the outer tube is 39.6×3, and the center distance between the outer sleeves 3 is 80mm; the height H of the nozzle is 2000mm, and the U-shaped piece The fixed position L of 1 and cover plate 2 is 40mm;

[0054] In the inner casing, the velocity of the coal slurry outlet is ~4m / s;

[0055] In the outer casing, the gas outlet velocity is ~125m / s;

[0056] The pressure of the gasifier is 6.5MPa, the gasificatio...

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Abstract

The invention discloses a beaming gasifying or burner nozzle and the application in industry. It comprises shell (5) and N nozzles (11) set in shell (5), which comprises outer tube (3), inner tube (4) set in outer tube, lower tube plate (6), upper tube plate (7) and cooling room (13). Compared with conventional nozzle with concentric tubes (such as two-way, three-way and multiple way nozzle), it can protect anti-fire brick on the middle and lower part of gasifying boiler and prolong the service life because the flame is short and rectangle; improve conversion ratio of carbon because Residence time is scattered narrowly; and improve the service life of nozzle because of rational structure.

Description

technical field [0001] The invention relates to a device for preparing synthesis gas by using hydrocarbon substances as raw materials, in particular to a gasification or combustion nozzle. Background technique [0002] Synthesis gas is the public technology, source technology, and key technology for the production of synthetic ammonia (precursor of urea), synthetic methanol, dimethyl ether, synthetic oil, hydrogen production, and sponge iron production, and the nozzle is the key technology for the production of syngas by entrained bed One, people have carried out a large amount of research and development work in this field, formed many patents, representative ones are: Shell (ZL 90103807.5), Texaco (ZL94193847.6) and East China University of Science and Technology (ZL 98110616.1). However, from the perspective of improving the conversion rate of coal and the service life of refractory bricks, these technologies cannot meet the industrial requirements. [0003] The low conv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C10/18F23C1/10C10J3/00
CPCC10J3/506B05B7/1673B05B7/08C10J2200/152Y02E20/18B05B7/06C10J2200/09C10J2300/1223
Inventor 于遵宏刘海峰李伟锋代正华陈雪莉于广锁王辅臣
Owner EAST CHINA UNIV OF SCI & TECH
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