JP2019531252A - セラミック組成物および前記セラミック組成物を熱回収ユニットの一部として含む材料 - Google Patents
セラミック組成物および前記セラミック組成物を熱回収ユニットの一部として含む材料 Download PDFInfo
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Abstract
Description
54〜66%のSiO2、
10〜20%のCr2O3、
3〜12%のNa2O、および、
3〜12%のZrO2。
54〜66%のSiO2、
12〜20%のCr2O3、
5〜12%のNa2O、および、
5〜12%のZrO2。
(a)前記セラミック組成物と溶媒との懸濁液であって、平均粒子径が40μm〜200μmである懸濁液を調製する工程、
(b)前記基材の少なくとも1つの面を前処理する工程、
(c)工程(a)で得られた懸濁液を、工程(b)で前処理した面に被覆する工程、
(d)工程(c)で得られた被覆を乾燥させる工程、
(e)工程(d)で得られた材料を700℃〜1000℃の温度で焼結させる工程。
54〜66%のSiO2、
10〜20%のCr2O3、
3〜12%のNa2O、および、
3〜12%のZrO2。
54〜66%のSiO2、
12〜20%のCr2O3、
5〜12%のNa2O、および、
5〜12%のZrO2。
(1)管は、清掃が容易であるため、清掃およびメンテナンスのコストが低減される、
(2)管は、防汚特性、高い耐蝕性、高い腐食性、耐摩耗性を示す、
(3)管の長寿命化が期待される。
市販シリケートである Keracoat SL RT100(64%〜66%)、クレー(3%〜3.7%)、ホウ砂(0.15%)、亜硝酸ナトリウム(0.15%)および水(30%〜31.7%)の混合物を粉砕することによって懸濁液を得た。均質および均一なペーストが形成され、平均粒子径が40μm〜200μmになるようにふるいにかけた。
61%のSiO2、
16%のCr2O3、
6%のNa2O、
7%のZrO2、
2%のB2O3、
2%のAl2O3、および、
3%のTiO2。
蒸気温度:300℃、
圧力:170bar、
煙霧温度:850℃、
管の内側の液状媒体:蒸気、
管の外側の液状媒体:エネルギーフューム(energy fume)への廃棄物、
その他の暴露:アルカリ灰。
Claims (16)
- 最終セラミック組成物に対して、下記成分(酸化物換算の重量%)を含む、セラミック組成物:
54〜66%のSiO2、
10〜20%のCr2O3、
3〜12%のNa2O、および、
3〜12%のZrO2。 - Al2O3、B2O3、BaO、CaO、CoO、K2O、Li2O、MnO2、TiO2またはそれらの任意の組合せからなるリストから選択される酸化物を10%まで含む、請求項1に記載のセラミック組成物。
- 最終セラミック組成物に対して、下記成分(酸化物換算の重量%)を含む、請求項1または2に記載のセラミック組成物:
54〜66%のSiO2、
12〜20%のCr2O3、
5〜12%のNa2O、および、
5〜12%のZrO2。 - 請求項1〜3のいずれか1項に記載のセラミック組成物、および鋼基材を含む、材料。
- 前記セラミック組成物の厚さが100μm〜160μmである、請求項4に記載の材料。
- 前記セラミック組成物の孔隙率が面積で10%より高く、好ましくは15%〜35%の範囲である、請求項4または5に記載の材料。
- 前記基材が管であり、
前記セラミック組成物が、前記管の内面または前記管の外面から選択される少なくとも1つの面に被覆される、請求項4〜6のいずれか1項に記載の材料。 - 前記基材が管であり、
前記セラミック組成物が前記管の外面に被覆される、請求項7に記載の材料。 - 以下の(a)〜(e)の工程を含む、請求項4〜8のいずれか1項に記載の材料を得る、方法:
(a)最終懸濁液に対して65重量%〜75重量%の請求項1〜3のいずれか1項に記載のセラミック組成物と、最終懸濁液に対して25重量%〜35重量%の溶媒との懸濁液であって、平均粒子径が40μm〜200μmである懸濁液を調製する工程、
(b)前記基材の少なくとも1つの面を前処理する工程、
(c)工程(a)で得られた懸濁液を、工程(b)で前処理した面に被覆する工程、
(d)工程(c)で得られた被覆を乾燥させる工程、
(e)工程(d)で得られた材料を700℃〜1000℃の温度で焼結させる工程。 - 工程(a)の溶媒が水である、請求項9に記載の方法。
- 工程(b)がショットブラストによって行われる、請求項9または10に記載の方法。
- 工程(c)が電気泳動堆積(EPD)、ディッピング、ウォーターフォールグレージングまたは噴霧によって行われる、請求項9〜11のいずれか1項に記載の方法。
- 工程(c)が噴霧によって行われる、請求項12に記載の方法。
- 工程(e)が850℃〜950℃の温度で行われる、請求項9〜13のいずれか1項に記載の方法。
- 400℃〜750℃の金属温度で作動する熱回収ユニットの一部としての、請求項4〜8のいずれか1項に記載の材料の使用。
- 前記熱回収ユニットがボイラーまたは焼却炉から選択される、請求項15に記載の材料の使用。
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PCT/EP2017/069121 WO2018019981A1 (en) | 2016-07-28 | 2017-07-28 | Ceramic composition and material comprising said ceramic composition as part of a heat recovery unit |
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