高鹽有機廢液焚燒爐用耐火材料研究現狀與展望

韓桂洪; 王智驍; 劉兵兵; 孫虎; 黃艷芳

doi:10.13374/j.issn2095-9389.2022.06.09.001

高鹽有機廢液焚燒爐用耐火材料研究現狀與展望

doi: 10.13374/j.issn2095-9389.2022.06.09.001

鄭州大學化工學院，鄭州 450001

基金項目: 國家自然科學基金資助項目（51904273，U2004215）

詳細信息

通訊作者:
劉兵兵，E-mail: liubingbing@zzu.edu.cn

黃艷芳，E-mail: huangyf@zzu.edu.cn

中圖分類號: TF748;TQ175.7
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- 文章訪問數: 527
- HTML全文瀏覽量: 289
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- 被引次數: 0
出版歷程
- 收稿日期: 2022-06-09
- 網絡出版日期: 2022-09-29
- 刊出日期: 2023-08-25

Research progress and outlook of refractory materials for high-salt organic liquid waste incinerators

School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China

More Information

Corresponding author: LIU Bing-bing，E-mail: liubingbing@zzu.edu.cn; HUANG Yan-fang, E-mail: huangyf@zzu.edu.cn

摘要

摘要: 高溫焚燒法是處理化工高鹽廢液的有效途徑，具有處理徹底、二次污染小和適應性強等顯著優勢。然后高鹽有機廢液組成復雜，工況下高溫爐渣易侵蝕焚燒爐耐火材料，耐火爐襯的損毀給焚燒爐穩定運行造成巨大的安全隱患與經濟損失。本文介紹了高鹽有機廢液焚燒爐用耐火材料的類型及其侵蝕機理。根據有機廢液焚燒過程的特點，本文對焚燒爐用耐火材料的抗蝕提出了一些建議措施，可為延長耐火材料使用壽命提供理論與技術基礎。
- 高鹽有機廢液 /
- 焚燒法 /
- 耐火材料 /
- 爐渣侵蝕 /
- 原位強化抗侵蝕
Abstract: High-salt, organic waste liquids are characterized as having high COD value, complex composition, strong acidity or alkalinity, high salinity, and poor biodegradability, resulting in them contributing to environmental pollution. High-temperature incineration technology to treat high-concentration organic waste liquid has obvious advantages of thorough treatment, reduced effluents, and near-universal applicability to the many types of complex organic substances. Additionally, it is an effective way to dispose of high-salt, liquid chemical waste. Due to the complex composition and the high salt content of high-salt organic liquid waste, the high-temperature slag causes serious erosion to the refractory material of the incinerator during use. Damaged incinerator refractory linings are significant safety hazards and can cause major economic losses. It is crucial to study and understand the corrosion resistance of refractory materials very well. This paper introduces the main types of refractory materials suitable for high-salt organic waste liquid incinerators, the main types of incinerators and their applications, and finally, describes the mechanism of erosion of the refractory materials in detail. Based on the characteristics of the incineration process of phenol and acetone coproduction organic liquid waste, a method was proposed for the in situ anticorrosion treatment of high-salt organic liquid waste using traditional corundum–mullite refractory materials. The slag enters the refractory material through pores on the interface and reacts strongly with the refractory material surface at 1000–1300 ℃ to produce a low-melting, liquid phase product. The thermal stress of the product is different from that of the original refractory material. If it falls off and is damaged, the service life of the refractory material is extremely short, and the replacement cycle is only 3 months. The addition of Cr₂O₃ powder to the waste liquid is eventually deposited at the interface of the refractory material after the liquid waste is incinerated and forms an antierosion, refractory, solid solution layer. The corrosion-resistant layer on the surface of the refractory brick rarely reacts with the molten slag to form a low melting point phase. The protective layer can effectively slow down the penetration and erosion of the refractory materials by the slag. The preliminary test run results show that adding 5% Cr₂O₃ to the liquid waste can prolong the service life of corundum–mullite refractory bricks to several days. This study demonstrated that the in situ strengthening method to improve the corrosion resistance of conventional refractory materials is economical and efficient and shows good prospects of popularization and application.
- high-salt organic waste liquid /
- incineration method /
- refractory materials /
- slag erosion /
- in-situ reinforcement against erosion

HTML全文

圖 1 液體噴射焚燒爐示意圖

Figure 1. Schematic of liquid jet incinerator

下載: 全尺寸圖片幻燈片

圖 2 流化床焚燒爐示意圖

Figure 2. Diagram of fluidized bed incinerator

下載: 全尺寸圖片幻燈片

圖 3 回轉窯焚燒爐示意圖

Figure 3. Schematic of rotary kiln incinerator

下載: 全尺寸圖片幻燈片

圖 4 原位抗蝕機理示意圖^[79]

Figure 4. Schematic of in situ corrosion resistance mechanism^[79]

下載: 全尺寸圖片幻燈片

圖 5 廢液中粉末狀Cr₂O₃添加原位抗侵蝕性的工業應用示意圖

Figure 5. Schematic of industrial application of in situ corrosion resistance of powdered Cr₂O₃ added to waste liquid

下載: 全尺寸圖片幻燈片

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