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Processing method of gasification furnace quenching ring

A processing method and chilling ring technology, which is applied in the petroleum industry and the manufacture of combustible gas, etc., can solve problems such as blockage of the downpipe of the chilling ring slag hanging, erosion of the outlet of the water distribution hole, and failure, etc., to improve the anti-shock Corrosion and service life, realize waste recycling, and improve service life

Active Publication Date: 2016-02-10
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0002] The coal-water slurry gasifier uses all coal as the raw material for gasification, and the chilled water is a medium flow containing three phases of gas, liquid and solid. Its solid suspended matter and turbidity are high, and the liquid phase contains Ca 2+ , Mg 2+ , Cl - , S 2- , CO 3 2- , NH 4 + A variety of ions, such as ions, will cause strong erosion, wear and corrosion damage to the quenching ring. Once the quenching ring leaks, it will cause slag hanging on the quenching ring, blockage of the gasifier slag port or downcomer, and the pressure of the furnace combustion chamber will increase. , the system could not maintain normal production, and the gasifier was forced to shut down for treatment
At present, the service life of the imported chilling ring is only 5 to 6 months, which seriously affects the continuous production of coal-water slurry gasification, increases the energy consumption and material consumption of the gasification device, and once the chilling ring is damaged, it can only be scrapped and replaced with a new one. The chilling ring needs 500,000 yuan, which seriously reduces the economic benefits and production costs of the enterprise
According to the research of the disintegration of a large number of old chilling rings after use, the inventors have shown that the erosion damage part is mainly manifested as the erosion and leakage of the outer ring pipe from the inner wall; the erosion of the outlet of the water distribution hole becomes larger; the erosion of the outer wall of the water distribution inner ring Grooves, which eventually lead to chiller ring failure due to leakage or uneven water distribution

Method used

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  • Processing method of gasification furnace quenching ring
  • Processing method of gasification furnace quenching ring
  • Processing method of gasification furnace quenching ring

Examples

Experimental program
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Effect test

Embodiment 1

[0026] refer to Figure 1~3 , the gasification furnace chilling ring processing method includes the following steps: Step 1, making an outer ring pipe 5, a cavity seat 1, a water distribution inner ring 3 and a cylinder body 7, and fixedly connecting the cavity seat 1 and the water distribution inner ring 3 And the cylinder body 7, the lower part of the cavity seat 1 is provided with a quenching water chamber 2 outside the circumference of the cylinder body 7, and the four water inlet pipes 6 are evenly fixed on the lower side of the cavity seat 1 and communicate with the quenching water chamber 2, and the cavity seat 1 is inside the water distribution chamber. There are 36 Φ14mm water distribution holes 8 on the top of the ring 3. The water distribution holes 8 and the radial direction of the cavity seat 1 have a 24o oblique angle. The quenching water enters the ring cavity 4 through the water distribution holes 8, and the quenching water impacts the outer ring A vortex is fo...

Embodiment 2

[0035] The gasification furnace quenching ring processing method can also be applied to the repair of the waste quenching ring, including the following steps:

[0036] Step 1, the original outer ring pipe 5 is cut off from the inner ring of the cavity seat 1, the inner wall of the original outer ring pipe 5 is damaged by erosion, and the outer ring pipe 5 also hinders the water outlet of the water distribution hole 8 and the water distribution inner ring 3 fixes. Utilize the original cavity seat 1, the water distribution inner ring 3 and the cylinder body 7, and make a new outer ring pipe 5.

[0037] Other steps are the same as steps 2 to 4 in Example 1 to realize the repair of the waste chilling ring.

[0038] The two quenching rings repaired by this gasification furnace quenching ring processing method have been in operation for 11 months and 8 months respectively, and they are still running normally with good results. The service life of the quenching ring has exceeded the...

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Abstract

A processing method of a gasification furnace quenching ring. The invention relates to the processing method of a coal water slurry gasification furnace quenching ring. The processing method includes the steps of: (A) firstly producing an outer ring tube (5), a chamber base (1), a water distribution inner ring (3) and a cylinder body (7) and fixedly connecting the chamber base (1), the water distribution inner ring (3) and the cylinder body (7), wherein a plurality of water distribution holes (8) are formed in the chamber base (1) above the water distribution inner ring (3); (B) spray-coating a hard alloy material onto the inner surface of the outer ring tube (5), the outer surface of the water distribution inner ring (3), and a water outlet on the water distribution inner ring (3) to form spray coating layers; (C) cutting the outer ring tube (5) into at least three parts; and (D) sleeving the water distribution inner ring (3) by the outer ring tube (5) on the inner side in the radial direction and welding the outer ring tube (5) to the inner ring on the chamber base (1). The method improves anti-erosion property and increases service life of the quenching ring, reduces shut down times, overcomes waste of loss of raw materials due to shut down maintenance and change of a new quenching ring in the prior art.

Description

technical field [0001] The invention relates to a processing method for a quenching ring of a coal-water slurry gasification furnace. Background technique [0002] The coal-water slurry gasifier uses all coal as the gasification raw material, and the chilled water is a medium flow containing three phases of gas, liquid, and solid, and its solid suspended matter and turbidity are high, and the liquid phase contains Ca 2+ , Mg 2+ , Cl - , S 2- , CO 3 2- , NH 4 + A variety of ions, such as ions, will cause strong erosion, wear and corrosion damage to the quenching ring. Once the quenching ring leaks, it will lead to slag hanging on the quenching ring, blockage of the slag port of the gasifier or the downcomer, and the pressure of the furnace combustion chamber will increase. , the system could not maintain normal production, and the gasifier was forced to shut down for treatment. At present, the service life of the imported chilling ring is only 5-6 months, which seriou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/72
Inventor 李聿营侯书波高波霍成斌王金辉崔黎明
Owner CHINA PETROLEUM & CHEM CORP
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