CN100398505C - 丙烯酸及酯类废油资源化处理方法 - Google Patents

丙烯酸及酯类废油资源化处理方法 Download PDF

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CN100398505C
CN100398505C CNB2006100408355A CN200610040835A CN100398505C CN 100398505 C CN100398505 C CN 100398505C CN B2006100408355 A CNB2006100408355 A CN B2006100408355A CN 200610040835 A CN200610040835 A CN 200610040835A CN 100398505 C CN100398505 C CN 100398505C
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scission reaction
acrylic acid
vinylformic acid
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沈福昌
沈建东
沈晓东
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Zhonghuanxin Nanjing Environmental Service Co ltd
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Abstract

本发明涉及化工废物处理工艺技术领域,尤其是一种丙烯酸及酯类废油资源化处理方法,具有如下工艺步骤:a.裂解;b.打浆;c.焚烧。本发明的丙烯酸及酯类废油资源化处理方法不但能将丙烯酸及酯类废油中所含的丙烯酸回收,而且能将回收丙烯酸后的废渣进行处理,达到无污染的排放,对焚烧产生的热能通过热能回收装置回收,用作丙烯酸及酯类废油的处理或其他生产用热能,回收烧结物中含有的钴、锰等贵金属。

Description

丙烯酸及酯类废油资源化处理方法
技术领域
本发明涉及化工废物处理工艺技术领域,尤其是一种丙烯酸及酯类废油资源化处理方法。
背景技术
丙烯酸及酯类废油是生产丙烯酸和/或其酯类产品的残液,是一种混合物,含有丙烯酸、二聚丙烯酸丁酯、吩噻嗪、正丁醇及对甲基硫磺酸等,其中丙烯酸含量为30~60%。国内外现有的处理工艺是将其直接焚烧处理,丙烯酸及酯类废油中所含的丙烯酸就全被焚烧掉而没能得到利用,造成资源浪费。如果对丙烯酸及酯类废油进行裂解反应回收丙烯酸,如中国专利CN1026104C公开了一种《丙烯酸酯类废油再生工艺》,其回收丙烯酸后的废渣处理就难以处理了,因为该废渣粘性极强,在常温下为固态,即使将其粉碎,一旦将粉碎后的废渣放在一起,它们马上又粘结在一起;加热后,熔化成液态,但其流动性极差,根本无法将其送进焚烧炉进行焚烧处理,因此只能将其粉碎与煤等燃料混合后进行焚烧处理。
发明内容
本发明的目的在于提供一种丙烯酸及酯类废油资源化处理方法,该方法不但能将丙烯酸及酯类废油中所含的丙烯酸回收,而且能将回收丙烯酸后的废渣进行处理,达到无污染的排放。
本发明解决其技术问题所采用的技术与案是:一种丙烯酸及酯类废油资源化处理方法,具有如下工艺步骤:
a.裂解:将生产丙烯酸酯类产品的残液——丙烯酸及酯类废油,用带有加热及保温装置的槽罐车运至处理厂,输入处理厂的贮罐,贮罐同样须具有加热和保温装置,使丙烯酸及酯类废油的温度保持80℃~200℃,使丙烯酸及酯类废油具有较好的流动性且其中的丙烯酸不易挥发,将贮罐中的温度为80℃~200℃丙烯酸及酯类废油用泵输入带有搅拌装置和加热装置的裂解反应釜中,加热升温,保持裂解反应釜中丙烯酸及酯类废油的温度在丙烯酸及酯的裂解温度180℃~350℃,不断地搅拌,进行裂解反应,不断搅拌有利于丙烯酸及酯挥发和使反应釜中丙烯酸及酯类废油的温度均衡,在裂解反应过程中进行真空减压蒸馏,真空度控制在0.05~0.08Mpa,蒸汽经冷凝器冷却后流进中间罐,得丙烯酸成品;
b.打浆:裂解反应结束,为使釜中残液的保持最佳的流动性和防止残液中水份挥发,在常压条件下保持裂解反应釜温度在60℃~200℃,向裂解反应釜中加水,不断搅拌,使残液和水混合均匀,将回收丙烯酸后的残液打成可流动的浆料,所加入的水与残液的比例为体积比0.2~0.5∶1;
c.焚烧:为防止浆料中水份的挥放又要使浆料保持最佳的流动性以免堵塞喷嘴,因此浆料的温度应控制在60℃~200℃,将温度60℃~200℃的浆料在加压条件下喷入焚烧炉,在1100℃~1300℃条件下进行焚烧处理,焚烧产生的热能通过热能回收装置回收,用作丙烯酸及酯类废油的处理或其他生产用热能,回收烧结物中含有的钴、锰等贵金属。
本发明的有益效果是,本发明的丙烯酸及酯类废油资源化处理方法不但能将丙烯酸及酯类废油中所含的丙烯酸回收,而且能将回收丙烯酸后的废渣进行处理,达到无污染的排放,对焚烧产生的热能通过热能回收装置回收,用作丙烯酸及酯类废油的处理或其他生产用热能,回收烧结物中含有的钴、锰等贵金属。
具体实施方式
一种丙烯酸及酯类废油资源化处理方法,具有如下工艺步骤:
a.裂解:将生产丙烯酸酯类产品的残液——丙烯酸及酯类废油,用带有加热及保温装置的槽罐车运至处理厂,输入处理厂的贮罐,贮罐同样须具有加热和保温装置,使丙烯酸及酯类废油的温度保持80℃~200℃,使丙烯酸及酯类废油具有较好的流动性且其中的丙烯酸不易挥发,将贮罐中的温度为80℃~200℃丙烯酸及酯类废油用泵输入带有搅拌装置和加热装置的裂解反应釜中,加热升温,保持裂解反应釜中丙烯酸及酯类废油的温度在丙烯酸及酯的裂解温度180℃~350℃,不断地搅拌,进行裂解反应,不断搅拌有利于丙烯酸及酯挥发和使反应釜中丙烯酸及酯类废油的温度均衡,在裂解反应过程中进行真空减压蒸馏,真空度控制在0.05~0.08Mpa,蒸汽经冷凝器冷却后流进中间罐,得丙烯酸成品;
b.打浆:裂解反应结束,为使釜中残液的保持最佳的流动性和防止残液中水份挥发,在常压条件下保持裂解反应釜温度在60℃~200℃,向裂解反应釜中加水,不断搅拌,使残液和水混合均匀,将回收丙烯酸后的残液打成可流动的浆料,所加入的水与残液的比例为体积比0.2~0.5∶1;
c.焚烧:为防止浆料中水份的挥放又要使浆料保持最佳的流动性以免堵塞喷嘴,因此浆料的温度应控制在60℃~200℃,将温度60℃~200℃的浆料在加压条件下喷入焚烧炉,在1100℃~1300℃条件下进行焚烧处理,焚烧产生的热能通过热能回收装置回收,用作丙烯酸及酯类废油的处理或其他生产用热能,回收烧结物中含有的钴、锰等贵金属。
对丙烯酸及酯类废油采用上述方法进行处理,既不会对环境造成污染,又回收了可贵的资源和能源。

Claims (1)

1.一种丙烯酸及酯类废油资源化处理方法,其特征是具有如下工艺步骤:
a.裂解:将温度为180℃~350℃丙烯酸及酯类废油输入带有冷凝器和搅拌装置的裂解反应釜中,保持裂解反应釜温度在180℃~350℃,不断地搅拌,进行裂解反应,在裂解反应过程中进行真空减压蒸馏,真空度控制在-0.05~-0.08Mpa,蒸汽经冷凝器冷却后流进中间罐,得丙烯酸成品;
b.打浆:裂解反应结束,在常压条件下保持裂解反应釜温度在60℃~200℃,向裂解反应釜中加水,不断搅拌,将回收丙烯酸后的废渣打成可流动的浆料,所加入的水与废渣的比例为体积比0.2~0.5∶1;
c.焚烧:将温度为60℃~200℃的浆料在加压条件下喷入焚烧炉,在1100℃~1300℃条件下进行焚烧处理,焚烧产生的热能通过热能回收装置回收,用作丙烯酸及酯类废油的处理或其他生产用热能,回收烧结物中含有的贵金属。
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Citations (3)

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Publication number Priority date Publication date Assignee Title
CN1046324A (zh) * 1989-04-15 1990-10-24 北京东方化工厂 从丙烯酸废油中回收丙烯酸的方法
CN1063678A (zh) * 1992-03-17 1992-08-19 侯玉里 丙烯酸酯类废油再生工艺
CN1269350A (zh) * 1999-04-05 2000-10-11 株式会社日本触媒 废油处理方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1046324A (zh) * 1989-04-15 1990-10-24 北京东方化工厂 从丙烯酸废油中回收丙烯酸的方法
CN1063678A (zh) * 1992-03-17 1992-08-19 侯玉里 丙烯酸酯类废油再生工艺
CN1269350A (zh) * 1999-04-05 2000-10-11 株式会社日本触媒 废油处理方法

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