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A Plasma Cracking Coal Quenching Device with Coating Protection and Anti-wear Cover

A plasma and quenching technology, used in coatings, fire-resistant coatings, organic chemistry, etc., can solve the problems of core wear of the quencher, easy side leakage of the nozzle, and small amount of quenching coolant, so as to ensure timely heat exchange, Avoid high temperature and the effect of superior wear resistance

Active Publication Date: 2020-05-26
ZHEJIANG UNIV
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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 overcome the deficiencies of the prior art, to provide a plasma cracking coal quenching device with a coating to protect the wear-resistant cover, which solves the problem that the inner core of the quencher is worn and the wear-resistant cover is difficult to grow in a high-temperature environment. Time stable operation, easy side leakage at the complex nozzle of the device, small quenching dose in the high temperature area of ​​the quenching center, etc., and can conveniently determine the best quenching starting position, the specific technical solution of the present invention is as follows:

Method used

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  • A Plasma Cracking Coal Quenching Device with Coating Protection and Anti-wear Cover
  • A Plasma Cracking Coal Quenching Device with Coating Protection and Anti-wear Cover
  • A Plasma Cracking Coal Quenching Device with Coating Protection and Anti-wear Cover

Examples

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Effect test

Embodiment 1

[0034] Zirconia is covered on the upper surface of the wear-resistant cover by spraying; the wear-resistant cover protected by the zirconia coating, the thickness of the zirconia coating is 0.05mm, and it is applied to the plasma cracking coal quenching device for high-temperature cracking gas And the quenching of unreacted pulverized coal, the quenching method is as mentioned above, high-temperature cracked gas and unreacted pulverized coal, with the line speed of about 80m / s of the temperature above 1500 ℃, from the cracked gas at the upper end of the quencher body 1 The inlet 9 leads into the quenching device, a part of the pyrolysis gas directly enters the quenching area between the quencher body 1 and the inner core 2 of the quencher, and the other part hits the arc surface of the arc-shaped wear-resistant cover 3 to prevent wear After many days of continuous work on the cover, check its arc surface, the zirconia coating is not damaged, and no wear-resistant cover is expos...

Embodiment 2

[0036] Zirconia is covered on the upper surface of the wear-resistant cover by spraying to obtain a wear-resistant cover protected by a zirconia coating with a thickness of 0.3mm. It is quenched under the same conditions as in Example 1. After many days of continuous work on the wear-resistant cover, check its On the arc surface, the zirconia coating is not damaged, and no anti-wear cover is exposed.

Embodiment 3

[0038] Tungsten carbide is covered on the upper surface of the wear-resistant cover by spraying; the wear-resistant cover protected by the tungsten carbide coating, the thickness of the tungsten carbide coating is 0.05mm, and it is applied to the plasma cracking coal quenching device for high-temperature cracking gas And the quenching of unreacted pulverized coal, the quenching method is as mentioned above, high-temperature cracked gas and unreacted pulverized coal, with the line velocity of about 80m / s of the temperature above 1500 ℃, from the cracked gas at the upper end of the quencher body 1 The inlet 9 leads into the quenching device, a part of the pyrolysis gas directly enters the quenching area between the quencher body 1 and the inner core 2 of the quencher, and the other part hits the arc surface of the arc-shaped wear-resistant cover 3 to prevent wear After many days of continuous work on the cover, check its arc surface, the tungsten carbide coating is not damaged, a...

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Abstract

The invention discloses a plasma cracking coal quenching apparatus with a coating protective wear-resistant cover. The plasma cracking coal quenching apparatus comprises a quenching device body, a quenching device inner core and a wear-resistant cover, wherein the quenching device inner core and the wear-resistant cover are arranged in the quenching device body, the wear-resistant cover is arranged on the top of the quenching device inner core, the quenching device inner core is provided with a plurality of top spray nozzles facing the wear-resistant cover, a coating covers the surface of thewear-resistant cover, and the coating is made of oxide of transitional metal or carbide of transitional metal. By adopting the plasma cracking coal quenching apparatus, the problems of abrasion of thequenching device inner core, difficulty of the wear-resistant cover in long-term stable operation in a high-temperature environment, small amount of quenching agent in a quenching central high-temperature area, difficulty in disassembling the wear-resistant cover and the like can be well solved, and the optimum quenching starting position can be conveniently determined.

Description

technical field [0001] The invention belongs to the field of chemical equipment, in particular to a plasma cracking coal quenching device with a coating protection wear-resistant cover. Background technique [0002] Acetylene is a very important basic organic chemical raw material. my country is a country rich in coal, poor in oil, and low in gas. The main elements of coal are C and H, and the molar ratio is close to 1:1, which is the same as that of acetylene. Relevant studies have shown that the high temperature and active chemical environment provided by thermal plasma can convert coal to acetylene, and the economic benefits are better than the most commonly used calcium carbide method and methane partial oxidation method in industrial production. The process of plasma cracking coal to acetylene has the advantages of short process, low resource consumption, and environmental friendliness. It is an effective way of direct coal conversion and has good industrial value and ec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C1/00C07C11/24C09D1/00
CPCC07C1/00C09D1/00C09D5/18C07C11/24
Inventor 何潮洪周高闻光东单若妮于飞陈新志任其龙陈丰秋吴忠标荣冈陈隆道
Owner ZHEJIANG UNIV