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High-temperature combustor

A technology of high-temperature combustion and rectification tube, which is applied in the field of coal gasification, can solve the problems of insufficient reaction between the imported crude gas and the gasification agent of the gasification burner, etc., so as to increase the residence time, facilitate disassembly and replacement, and ensure the service life of the equipment Effect

Pending Publication Date: 2018-11-06
KEDA MAS CLEAN ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of high-temperature flushing of imported crude gas containing solids and insufficient reaction between imported crude gas and the gasification agent of the gasification burner, the present invention provides a high-temperature burner to meet the needs of combustion technology using high-temperature gas as fuel. Special requirements for burners

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as Figure 1-2 As shown, a high-temperature burner in this embodiment includes: a swirl volute 1, a rectifying cylinder 2 and a gasification burner 5, the rectifying cylinder 2 is connected to the bottom of the swirl volute 1 and arranged coaxially therewith, and the gasification The burner 5 is located at the center of the swirl volute 1 .

[0038] The existing entrained entrained gasification technology is usually in the form of four-burner side-firing or top-mounted single-burner structure. The temperature of the gasification agent is relatively low, and the pulverized coal needs to be sent by pneumatic conveying or coal-water slurry. Into the burner, and a series of valves (such as pulverized coal angle valve, three-way valve, nuclear flow meter, etc.) need to be set on the pipeline to ensure the stability of its continuous delivery. At the same time, it is necessary to install ignition burners and start-up burners in the gasifier. The cost of these pipeline v...

Embodiment 2

[0045] refer to figure 1 , a kind of high-temperature burner of the present embodiment, its structure is basically the same as embodiment 1, further:

[0046]The rectifying cylinder 2 is a conical cylinder or a circular cylinder. Since the structure of rectifying cylinder 2 depends on the choice of gas flow rate at the outlet of the burner, the flow rate at the outlet of the lower passage is small, so the circular cylinder used for rectifying cylinder 2 can ensure the same flow rate at the upper and lower sides, and the conical cylinder used for rectifying cylinder 2 can speed up the outlet flow velocity , these two options need to be decided based on the simulated calculation of the outlet flow rate. It is further ensured that the imported crude gas reacts uniformly and fully with the gasification agent of the gasification burner 5 .

[0047] Among them, the rectifier 2 is provided with a wear-resistant and heat-insulating inner lining layer to prevent social security damag...

Embodiment 3

[0049] Since the combustion reaction temperature at the lower end of the burner is above 1500°C, a reasonable cooling structure is required to ensure the service life of the equipment. The difference from Embodiment 1 or 2 is that in this embodiment, a water cooling jacket is provided at the bottom of the rectifier 2 3. The water-cooling jacket 3 itself is a cooling structure, and the wall surface temperature is low.

[0050] In order to increase the wear resistance, further, the inner wall of the water cooling jacket 3 is provided with a wear-resistant inner lining layer, the upper part of the water cooling jacket 3 is a steel cylinder, the interior is provided with a wear-resistant and heat-insulating inner lining, and the upper end is provided with a connecting flange , is connected with the rectifier 2, which can be easily disassembled and maintained. The lower part of the water-cooling jacket 3 is a water-cooling structure. Since the gasification reaction occurs when the...

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Abstract

The invention discloses a high-temperature combustor, and belongs to the technical field of the coal gasification. The high-temperature combustor comprises a rotational flow volute housing, a rectification cylinder and a gasification nozzle, wherein the rectification cylinder is connected to the bottom of the rotational flow volute housing and coaxially arranged with the rotational flow volute housing, the gasification nozzle is positioned in the center of the rotational flow volute housing, the exterior of the rotational flow volute housing is vortex-shaped, and the interior of the rotationalflow volute housing is provided with a wear-resistant heat-insulating lining layer. According to the high-temperature combustor, a rotational flow channel is constructed in the rotational flow volutehousing, enabling a movement track of raw coal gas to change from linear motion to spiral downward motion, increasing the standing time of the coal gas in a gasification furnace of a downstream entrained-flow bed, and enabling the raw coal gas at an inlet to be adequately mixed and reacted with a gasification agent of the gasification nozzle; the high-temperature combustor has the advantages of being simple in structure, suitable for the high-temperature washing of the solid-containing raw coal gas at the inlet, and capable of reinforcing the adequate reaction of the raw coal gas at the inletand the gasification agent of the gasification nozzle.

Description

technical field [0001] The invention belongs to the technical field of coal gasification, and in particular relates to a high-temperature burner. Background technique [0002] In the field of coal gasification technology, the traditional fluidized bed and entrained flow gasification processes have their own advantages and disadvantages. The advantage of the fluidized bed is that the raw coal processing and transportation system are relatively simple, and no coal mill and pressurized transportation system are required. Smaller, but the gasification temperature of the fluidized bed is lower, and the residual carbon of fly ash and slag is more. The entrained bed has a large investment in raw coal treatment and pressurized conveying system, but its gasification reaction temperature is high, the carbon content of fly ash and slag is small, and the gas calorific value is high. Therefore, the effective combination of the two coal gasification technologies is a frontier direction f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/72C10J3/74C10J3/76
CPCC10J3/72C10J3/74C10J3/76C10J2300/1223
Inventor 全健森刘淑媛彭敏黄成龙王为为韩忠辉
Owner KEDA MAS CLEAN ENERGY
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