文章信息/Info

Title:

Study on Preparation and Properties of Infrared Radiation Energy-Saving Materials with High Emissivity

文章編號(hào):

1674-3962(2023)06-0521-04

作者:

李　飛;  靳　鵬;  王旭峰;  谷小虎;  張　靜;  王麗杰

李　飛, 靳　鵬, 王旭峰, 谷小虎, 張　靜, 王麗杰

Author(s):

LI Fei;  JIN Peng;  WANG Xufeng;  GU Xiaohu;  ZHANG Jing;  WANG Lijie

State Key Laboratory of Coking Coal Resources Green Exploitation,Pingdingshan 467000, China

關(guān)鍵詞:

紅外發(fā)射率;  紅外輻射材料;  節(jié)能涂料;  高溫固相反應(yīng)

Keywords:

infrared emissivity;  infrared radiation material;  energy-saving coatings;  solid state reaction

分類(lèi)號(hào):

TB34

DOI:

10.7502/j.issn.1674-3962.202108045

文獻(xiàn)標(biāo)志碼:

A

摘要:

將原料Fe2 O3 、Cr2 O3 、MnO2 、CuO、SiO2 、Al2 O3 按比例混合, 在1200 ℃ 下經(jīng)固相高溫?zé)�結(jié)制備成高溫高發(fā)射率節(jié)能材料, 再與粘結(jié)劑混合球磨制備高溫高發(fā)射率節(jié)能涂料。通過(guò)掃描電子顯微鏡(SEM)、紅外輻射測(cè)量?jī)x對(duì)材料的微觀(guān)結(jié)構(gòu)和理化性能進(jìn)行表征, 結(jié)果表明, 在400~700 ℃、2~14 μm 波段, 制備的涂層樣品的發(fā)射率隨測(cè)量溫度的升高逐漸增大;在測(cè)量溫度為700 ℃時(shí), 測(cè)得樣品的發(fā)射率最高達(dá)到0. 94。采用熱震法對(duì)涂層的抗熱震性能進(jìn)行了測(cè)試, 結(jié)果表明, 將涂層加熱到1000 ℃進(jìn)行水冷退熱并反復(fù)循環(huán)操作50 次, 涂層未發(fā)現(xiàn)脫落, 這說(shuō)明涂層的抗熱震性能良好。此外, 20T(SZS20-1. 25-Q)燃?xì)忮仩t工業(yè)試驗(yàn)表明, 在燃?xì)忮仩t水冷壁外表面噴涂該高溫高發(fā)射率節(jié)能材料后, 鍋爐排煙溫度降低、效率提升,與噴涂前相比效率提高了3. 42%, 節(jié)能效果顯著。

Abstract:

High-temperature high-emissivity energy-saving materials were prepared using Fe2O3, Cr2O3, MnO2, CuO, SiO2 and Al2O3 powders as raw materials via a high temperature solid phase sintering at 1200 ℃ and a sequnce mixture with binder for ball milling. The microstructure and physicochemical properties of the material were characterized by scanning electron microscope(SEM) and infrared radiation measuring instrument. Results indicated that the emissivity of the prepared coating sample gradually increased with the increase of measuring temperature at 400~700 ℃, 2~14 μm band. When the measuring temperature is 700 ℃, the highest emissivity of the sample is 0. 94. The thermal shock resistance of the coating was tested using the thermal shock method, and the results showed that the coating was heated to 1000 ℃ for water-cooling to deheat and cooling for 50 cycles, and no coating peeling was found, which indicated that the thermal shock resistance of the coating is good. In addition, the results of industrial tests on 20T (SZS20-1. 25-Q) gas-fired boilers showed that the exhaust gas temperature of the boiler can be reduced, and the boiler efficiency can be improved after spraying high-temperature and high-emissivity energy-saving materials on the outer surface of water wall of a gas boiler. Compared with unpainted boilers, the efficiency of sprayed boilers was increased by 3. 42%, which showed that this material has a significant energy-saving effect.