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A kind of dry coal powder entrained bed gasifier burner with water cooling coil protection

A water-cooled coil and entrained flow bed technology, which is applied in the gasification of granular/powdered fuels, feeding tools for gasification devices, and the manufacture of combustible gases, can solve the problems of high manufacturing cost, short service life, and gas Furnace parking and other problems, to save time and manpower, long service life, low manufacturing costs

Inactive Publication Date: 2020-05-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of high manufacturing cost of existing gasification furnace burners, easy burnout under high temperature conditions in the furnace, and short service life so that the gasification furnace is often shut down, and further provides a water-cooled coil Protected dry coal pulverized coal entrained bed gasifier burner

Method used

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  • A kind of dry coal powder entrained bed gasifier burner with water cooling coil protection
  • A kind of dry coal powder entrained bed gasifier burner with water cooling coil protection
  • A kind of dry coal powder entrained bed gasifier burner with water cooling coil protection

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specific Embodiment approach 1

[0043] Specific Embodiment 1: In this embodiment, a dry coal pulverized entrained bed gasifier burner with water-cooling coil protection includes a pulverized coal pipeline 1, a gasification agent pipeline 2, a water-cooling coil 5, and a gasification agent pipeline. Constriction port 6, pulverized coal pipeline 1 and gasification agent pipeline 2 are coaxially arranged from inside to outside, the end of gasification agent pipeline 2 away from the burner head is sealed with the outer wall of pulverized coal pipeline 1, and the top of pulverized coal pipeline 1 A pulverized coal airflow inlet 1-1 is provided, a gasification agent inlet 2-1 is provided near the top of the gasification agent pipeline 2, and a cooling water inlet pipe 4 and a cooling water outlet pipe 3 are respectively arranged at both ends of the water cooling coil 5, The pulverized coal pipeline 1 is a straight pipeline, and the outlet end of the gasification agent pipeline 2 is provided with a constriction port...

specific Embodiment approach 2

[0045] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the contraction angle θ is 0°<θ≤45°, which facilitates the mixing of gasification agent and coal powder and accelerates the coal gasification reaction. . Others are the same as in the first embodiment.

specific Embodiment approach 3

[0046] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the L is 0 ≤ L ≤ 50mm, and this setting increases the premixing section of the gasification agent and coal powder to strengthen the gasification agent Mixing with coal powder, while preventing the premixing section from being too long, so that the coal powder burns in advance and ablates the burner. Others are the same as those in the first or second embodiment.

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Abstract

The invention discloses a gasifier burner with water-cool that ed coiled tube protection for a dry feed entrained flow bed, and relates to the gasifier burner. The invention aims at solving the problems of an existing gasifier burner that manufacturing cost is high, burning loss is easy to cause in a gasifier under the high temperature condition, and the service life is short, so that shutdown of the gasifier often occurs. A pulverized coal pipeline and a gasifying agent pipeline are coaxially arranged from inside to outside; one end, away from the head of the burner, of the gasifying agent pipeline is connected with the outer side wall of the pulverized coal pipeline in a sealing manner; a pulverized coal air current inlet is formed in the top end of the pulverized coal pipeline; a gasifying agent inlet is formed close to the top end of the gasifying agent pipeline; a cooling water inlet pipe and a cooling water outlet pipe are respectively arranged at two ends of the water-cooled coiled tube; a contraction opening is formed in the outlet end of the gasifying agent pipeline. The cost of the burner disclosed by the invention is 0.5 to 1 million yuan and is about 30 to 50 percent of the manufacture cost of an existing burner; by trial firing, the burner disclosed by the invention has no ablation phenomenon; the temperature of a position 100mm away from an outlet of the burner is kept at about 1000DEG C; the service life of the burner can reach 2 to 3 years or longer, and is 4 to 6 times that of the existing burner.

Description

technical field [0001] The invention relates to a burner of a gasification furnace, in particular to a burner of a dry coal pulverized air flow bed gasification furnace with water cooling coil protection. Background technique [0002] my country is the world's largest coal producer and consumer. At present, coal accounts for about 70% of my country's primary energy consumption structure, and more than half of the coal is used in the form of direct combustion. The resulting coal-burning pollutants are harmful to the ecological environment. caused serious pollution. Coal gasification is one of the important clean coal technologies and has a wide range of applications. At present, the main coal gasification technologies include moving bed (fixed bed) gasification, fluidized bed gasification, entrained bed gasification and molten bed gasification, among which entrained bed gasification technology has high gasification intensity and large single furnace production capacity , wid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/50
CPCC10J3/506C10J2200/15
Inventor 陈智超王浩鹏何涛李争起曾令艳高禄山
Owner HARBIN INST OF TECH
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