2020.07.22中國(guó)給水排水關(guān)于2020年中國(guó)無(wú)廢城市建設(shè)及固廢資源化利用可持續(xù)高質(zhì)量發(fā)展大會(huì).doc
2020.07.23中國(guó)給水排水2020年中國(guó)城鎮(zhèn)污泥處理處置技術(shù)與應(yīng)用高級(jí)研討會(huì) 2.doc
燃煤電廠污泥協(xié)同焚燒政策研究與方案探索
Policy research and program exploration on co-processing sludge in thermal power plant
陳北洋,付巖峰,康瑞
(華電水務(wù)科技股份有限公司)
摘 要:燃煤電廠污泥協(xié)同焚燒消耗量大、減量徹底,在我國(guó)污泥資源化利用總體形勢(shì)下引起廣泛關(guān)注。通過(guò)深入分析國(guó)家政策、行業(yè)規(guī)劃和泥質(zhì)標(biāo)準(zhǔn)分析,確定“干化減量+協(xié)同焚燒”的技術(shù)路線,并從工藝流程、燃料熱值、機(jī)組容量等方面落實(shí)電廠基礎(chǔ)條件。比較多種干化方案及摻混方式,提出入爐泥質(zhì)要求和摻混比例,并對(duì)污泥協(xié)同焚燒煙氣排放標(biāo)準(zhǔn)進(jìn)行建議。
Abstract:The collaborative disposal of sludge in coal-fired power plant has the characteristics of large consumption and thorough reduction. Under the overall situation of sludge resource utilization in China, it has attracted extensive attention. Through in-depth analysis of national policies, industry planning and mud quality standard analysis, the technical route of "drying reduction + collaborative incineration" is determined, and the basic conditions of the power plant are implemented in terms of process flow, fuel calorific value, unit capacity, etc.By comparing various drying schemes and mixing methods, the requirements of sludge quality and mixing proportion are put forward, and the emission standard of sludge co incineration flue gas is proposed.
關(guān)鍵詞:市政污泥;燃煤電廠;協(xié)同焚燒;煙氣排放
Key words: municipal sludge; coal-fired power plant; collaborative incineration; flue gas emission
0 引言
截至2018年6月,全國(guó)設(shè)市城市累計(jì)建成城市污水處理廠5222座,處理能力2.28億m³/d,年產(chǎn)含水率80%濕泥5075萬(wàn)m³,預(yù)計(jì)2020年將突破6000萬(wàn)噸[1]。然而我國(guó)污水處理長(zhǎng)期存在“重水輕泥”的問(wèn)題,污泥隨意排放,相當(dāng)于經(jīng)污水廠處理后分離出的污染物同處理干凈的污水一同進(jìn)入環(huán)境,減排效果大打折扣。我國(guó)污泥重金屬含量高、有機(jī)質(zhì)含量低,污泥農(nóng)用未達(dá)成共識(shí),土地利用范圍有限,填埋逐步被禁止,而污泥焚燒消耗量大、減量徹底,逐漸成為首選方案[2]。