文章信息/Info

Title:

Application of High Temperature Resistant Materials in Coal�睩ired Power Plants and Research Progress of Aluminizing Coating Preparation Technology

文章編號(hào):

1674-3962(2020)06-0487-09

作者:

王昊; 李廣忠; 李亞寧

（西北有色金屬研究院 金屬多孔材料國(guó)家重點(diǎn)實(shí)驗(yàn)室，陜西 西安 710016）

Author(s):

WANG Hao;  LI Guangzhong;  LI Yaning

(State Key Laboratory of Porous Metal Materials, Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China)

關(guān)鍵詞:

耐高溫材料; 涂層; 滲鋁; 應(yīng)用進(jìn)展

Keywords:

high-temperature resistant materials;  coating;  aluminized;  application progress

分類號(hào):

TG156.8+6

DOI:

10.7502/j.issn.1674-3962.201909016

文獻(xiàn)標(biāo)志碼:

A

摘要:

燃煤火力發(fā)電技術(shù)是當(dāng)前能源結(jié)構(gòu)下最主要的發(fā)電技術(shù)，在未來(lái)50年內(nèi)也將占據(jù)主導(dǎo)。煤炭等化石燃料資源仍是電力的主要來(lái)源，短期內(nèi)不會(huì)被替代。當(dāng)前火電裝機(jī)總?cè)萘颗c其他發(fā)電技術(shù)相比也有絕對(duì)優(yōu)勢(shì)，占比約60%�；鹆Πl(fā)電的關(guān)鍵在于節(jié)能環(huán)保，隨著技術(shù)革新，目前已發(fā)展為超超臨界壓力機(jī)組，功率可達(dá)1000 MW，發(fā)電效率達(dá)到50%左右，經(jīng)濟(jì)環(huán)保的同時(shí)提高了能源效率。然而，在極端的溫度與壓力下，材料的性能成為制約發(fā)電效率的關(guān)鍵因素之一。從燃煤火力電站選用材料的角度，介紹了耐熱鋼及耐熱涂層的使用。滲鋁是傳統(tǒng)的化學(xué)熱處理方法，是提高電站關(guān)鍵材料熱穩(wěn)定性的有效途徑，綜述了滲鋁涂層的制備方法及新型技術(shù)。此外，煤炭超臨界水氣化制氫發(fā)電具有廣闊的應(yīng)用前景，對(duì)此技術(shù)及涂層在新型電站的使用進(jìn)行了展望。

Abstract:

Coal-fired thermal power generation technology is the most important power generation technology at present. It will play a dominant role in the next 50 years. Coal and other fossil fuel resources are still the main source of electricity and will not be substituted for the short term. Compared with other power generation technologies, the total installed capacity of thermal power accounts for about 60%, which has absolute advantages. The key to thermal power generation is energy utilization and environmental protection. With the development of technological innovation, the new type of ultra-supercritical unit possess power up to 1000 MW and power generation efficiency up to 50%. It was not only economical and environmentally-friendly but also improved energy efficiency. However, under extreme temperature and pressure, the performance of materials has become one of the critical factors which restrict the efficiency of power generation. From the view of the material application for coal-fired thermal power plants, this paper introduced the use of materials such as heat-resistant steel and heat-resistant coating. Aluminizing is a traditional chemical heat treatment method, which can improve the thermal stability of materials in major parts of the power plant. In this paper, the preparation methods and new technologies of aluminized coatings were reviewed. Also, hydrogen generation by coal supercritical water gasification has broad prospects. The application of this technology and coating in new power plants has been prospected.