Integrated coal-water-slurry burner and ignition method

A technology of coal water slurry and cooling water, which is applied in the details of gasification device, granular/powdered fuel gasification, petroleum industry, etc. It can solve the problem of large axial velocity component of the mixture, affecting the residence time of the material, and the wear of the inner cavity of the nozzle, etc. problem, achieve the effect of increasing the residence time, avoiding unreasonable release of thermal stress, and stabilizing the ignition system

Pending Publication Date: 2019-04-19
陕西宏远燃烧设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (3) During normal operation, the slag splash caused by gas backflow damages the coil
[0015] 3. Physical abrasion of nozzle
Because the mixture contains a large amount of pulverized coal solid particles, the inner cavity of the middle nozzle is worn
The flow rate should not be too high. If it is too high, the axial velocity component of the mixture will be large, and the flame will be slender, which will affect the residence time of some materials and the carbon conversion rate.

Method used

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  • Integrated coal-water-slurry burner and ignition method
  • Integrated coal-water-slurry burner and ignition method
  • Integrated coal-water-slurry burner and ignition method

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Embodiment 1

[0047] exist figure 1 Among them, the present invention is an integrated coal-water slurry burner, one end of the burner body is welded and fixed with a burner head, and the other end is welded and fixed with a third tee 16, and one end of the third tee 16 is connected with the outer epoxy oxygen inlet The pipeline 25 is connected, and the other end is welded and fixed to the sixth connecting flange 15 equipped with lifting lugs. The sixth connecting flange 15 and the fifth connecting flange 14 are fixedly connected and installed with threaded fastening connectors. The third three-way Insert the coal water slurry casing 13 in 16, the coal water slurry casing 13 is used to transmit the coal water slurry, one end of the coal water slurry casing 13 is connected with the burner head, and the other end is connected with the second three-way 11, the second One end of the two-way connection 11 is welded and fixed to the fourth connecting flange 10, and the other end is connected to t...

Embodiment 2

[0055] In the above-mentioned embodiment 1, the ignition gun conduit head 23 of the present embodiment is a conical structure, and 4 air holes are evenly distributed on the ignition gun conduit head 23, and the conical structure of the coal-water slurry nozzle 22-1 and the ring cover The conical structure of the connector 22-7 is concentric and forms an outer epoxy oxygen inlet channel with a spacing of 8 mm. The central oxygen inlet nozzle 22-6 is indented 8 mm from the end face of the head ring cover 22-4 to the fire end, and the coal water slurry The fire end of the nozzle 22-1 is indented by 1 mm relative to the end face of the head ring cover 22-4, and the upper part of the ring cover connector 22-7 is evenly distributed with 20 water outlet holes b and the water isolation ring 22 The lower part of -5 is uniformly processed with 20 inlet holes a, the diameter of the inlet hole a is 4mm, the diameter of the outlet hole b is 4mm, and the included angle between the water barr...

Embodiment 3

[0057] In the above-mentioned embodiment 1, the ignition gun conduit head 23 of the present embodiment is a conical structure, and 6 air holes are evenly distributed on the ignition gun conduit head 23, and the conical structure of the coal-water slurry nozzle 22-1 and the ring cover The conical structure of the connector 22-7 is concentric and forms an outer epoxy oxygen inlet channel with a spacing of 20 mm. The central oxygen inlet nozzle 22-6 is indented by 10 mm from the end face of the head ring cover 22-4 to the fire end, and the coal water slurry The fire end of the nozzle 22-1 is indented by 3mm relative to the end face of the head ring cover 22-4, and the upper part of the ring cover connector 22-7 is evenly distributed with 60 water outlet holes b and the water isolation ring 22 The lower part of -5 is uniformly processed with 60 inlet holes a, the diameter of the inlet hole a is 8mm, the diameter of the outlet hole b is 8mm, and the included angle between the water ...

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Abstract

Provided is an integrated water-coal-slurry burner. A burner head is arranged at one end of a burner body, and an ignition device is arranged at the other end of the burner body. An electric ignitionsystem is additionally arranged in central oxygen of a typical water-coal-slurry process burner to form a concentric four-sleeve structure, fuel gas (combustible gases such as natural gas, liquefied gas, purge gas and the like) and oxygen are ignited by a high-energy ignition rod to form an ignition flame, then the gas flow is adjusted to form a larger flame, after the starting condition of a gasification furnace is met, coal water slurry is put for combustion, and then operation is carried out according to the working condition of the typical coal water slurry process burner, namely, the ignition starting of a refractory brick heat storage chamber of a hot wall furnace is improved into water-cooled wall fire ignition type starting ignition, so that the integrated working process of ignition, starting and the process burner is achieved, and the investment, operation and maintenance costs of enterprises are greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of coal chemical combustion equipment, and in particular relates to an integrated coal-water slurry burner and an ignition method. Background technique [0002] The coal water slurry process burner is used in the gasification furnace that uses coal as raw material to manufacture chemical fertilizers, methanol and other chemical products. The coal water slurry process burner is one of the most critical technologies in the coal water slurry gasification technology, which directly determines the efficiency and stability of the process. [0003] A typical coal water slurry process burner is designed as three coaxial inner, middle and outer circles or rings, in which the inner and outer nozzles are oxygen channels, and the middle is a coal water slurry channel. Coal water slurry and oxygen are sprayed into the gasifier with a high-speed jet, and the medium collides, atomizes, and burns in the gasifier, and under...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/50
CPCC10J3/50C10J2200/152
Inventor 张雷刘广飞段文铮
Owner 陕西宏远燃烧设备有限公司
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