CN101450894A - 丙烯酸及酯装置保温伴热*** - Google Patents

丙烯酸及酯装置保温伴热*** Download PDF

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CN101450894A
CN101450894A CNA2009100664073A CN200910066407A CN101450894A CN 101450894 A CN101450894 A CN 101450894A CN A2009100664073 A CNA2009100664073 A CN A2009100664073A CN 200910066407 A CN200910066407 A CN 200910066407A CN 101450894 A CN101450894 A CN 101450894A
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vinylformic acid
thermal insulation
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CN101450894B (zh
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刘利
巩传志
史广明
李志远
刘学线
李艳红
赵丽萍
乔士红
徐德仁
李迎辉
郭晓宇
刘春艳
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PetroChina Jilin Chemical Engineering Co.,Ltd.
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Jilin Design Institute
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Abstract

本发明公开一种丙烯酸及酯装置保温伴热***，利用装置内的冷却水，进行液相状态下介质保温伴热，其特征在于，通过冷却器将水加热至35～43℃，再用加热器加热至60～70℃，送入装置的各生产区保温伴热，伴热后送各区设收集罐，再汇入装置收集罐，由泵打回循环水站，重复利用；本发明的优点在于，保温伴热用水，采用丙烯酸反应单元冷却器的冷却水，通过加热器加热后加以利用，保温伴热后不排入地沟，又返回装置重复利用，节省所用蒸汽，减少用水流失，以一个8万吨/年丙烯酸及酯装置为例，采用本发明方案，每年可节省装置运行费用近700万元，其经济和社会效益都是显著的。

Description

丙烯酸及酯装置保温伴热***
技术领域
本发明涉及有机化学品丙烯酸及丙烯酸酯生产装置的设备及管道保温伴热***。
背景技术
丙烯酸及酯装置因其介质的特殊性质，大部分设备和管道均需要保温伴热。在丙烯酸及酯介质以气相状态存在时需要低压蒸汽伴热，以液相状态存在时需要热水伴热。在其伴热过程中，由于丙烯酸及酯装置单元多，设备布置较为分散。处理不好，会造成伴热***相互制约，造成局部伴热过热或过冷，被伴热介质聚合或结晶，影响装置的长期安全、稳定运行，同时，低压蒸汽制热水用于保温伴热是能源的浪费，保温伴热后的水排入地沟放掉，不加以回收，更是一种资源浪费。
发明内容
本发明的目的在于克服现有技术之不足，提供一种新的丙烯酸及酯装置保温伴热***。
本发明的技术方案是利用装置内已有工艺设备的冷却水，采用本装置内已有的工艺设备对上述冷却水加热，加热后的热水用于设备和管道的保温伴热，按不同部位分别设有收集罐，对水进行回收，再利用。
一种丙烯酸及酯装置保温伴热***，丙烯酸反应单元中丙烯酸反应生成气通过吸收塔吸收操作，其塔底的冷却器E-110冷却水的上水温度为25～33℃，其特征在于，通过冷却器E-110，其回水温度升至35～43℃，将此回水送入加热器E-760，加热后的冷却水温度升至60～70℃，用于设备和管道内液相状态下介质进行保温伴热，按照工艺设备的布置分布情况，分别设有成品丙烯酸酯区收集罐、丙烯酸生产区收集罐、丙烯酸酯生产区收集罐、丙烯酸酯中间罐区收集罐、丙烯酸生产中间罐区收集罐，上述各收集罐的冷却水，进入装置收集罐，再用加热泵P-761送至循环水站，重复利用。
本发明的优点在于，保温伴热水，不用低压蒸汽制成，而用丙烯酸反应单元冷却器的冷却水，通过加热器加热而成，保温伴热后的冷却水，并不排向地沟，又返回装置。资源和能源回收利用。
以一个8万吨/年丙烯酸及酯装置为例，每年可节约运行费用约700万元，其经济和社会效益是显著。
附图说明
图1为本发明***构成简图。
具体实施方式
下面结合附图和具体实例对本发明作出进一步地详细描述。
某8万吨/年丙烯酸及酯装置项目，吸收塔塔底冷却器需要循环水进行冷却，以保证吸收塔塔底的要求温度。需要30℃冷却水的量为332吨/小时。经塔底冷却器E-110冷却之后，冷却水的的温度为40℃。将332吨/小时、40℃循环水回水通过热水加热器E-760进行加热，将这股热水加热到65℃，消耗蒸汽为16.74吨/小时，原装置在实施本方案前，将30℃冷却水进行加热，消耗蒸汽为22.5吨/小时。以此项发明可节省蒸汽5.76吨/小时，以蒸汽138.5元/吨计算，一年可减少运行费用638.2万元。同时降低了E-760的一次性投资。
一个8万吨/年丙烯酸及酯装置项目，装置布置分为丙烯酸主装置区、丙烯酸及酯中间罐区和丙烯酸成品罐区。由于罐区与主装置受安全距离的限制，布置的距离较远。而各区域都需要热水伴热，如不进行收集再分配，将造成个别设备和管道出现保温伴热用水争嘴现象。局部将会出现过热和过冷状况，造成物料结晶或聚合，导致设备和管道堵塞，造成不必要停车。此项发明克服了现有装置的缺点。将热水回水进行分区收集，最终汇总到装置收集罐中。为此，分别设有成品罐区收集罐、丙烯酸区收集罐、丙烯酸酯区收集罐、丙烯酸酯中间罐区收集罐、丙烯酸中间罐区收集罐，以上各收集罐的冷却水，再进入装置收集罐，用热水泵P-761送出，进行循环使用。节省用水近300吨/小时。以循环水0.4元/吨计算，一年可节省费用96万元。

Claims (1)

1、一种丙烯酸及酯装置保温伴热***，丙烯酸反应单元中丙烯酸反应生成气通过吸收塔吸收操作，所用冷水器的上水温度为25～33℃，其特征在于，通过冷却器E-110，其回水温度升至35～43℃，将此回水送入加热器E-760，加热后的冷却水温度升至60～70℃，用于设备和管道内液相状态下介质进行保温伴热，按照工艺设备的布置分布情况，分别设有成品丙烯酸酯区收集罐、丙烯酸生产区收集罐、丙烯酸酯生产区收集罐、丙烯酸酯中间罐区收集罐、丙烯酸生产中间罐区收集罐，上述各收集罐的冷却水，进入装置收集罐，再用加热泵P-761送至循环水站，重复利用。
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CN115108943A (zh) * 2022-08-09 2022-09-27 山东禹城易澳科技有限公司 一种氨基甲酸酯生产中稳定热水水温的工艺

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US7128813B2 (en) * 2002-05-01 2006-10-31 Rohm And Haas Company Process for manufacturing high purity methacrylic acid

Cited By (1)

* Cited by examiner, † Cited by third party
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CN115108943A (zh) * 2022-08-09 2022-09-27 山东禹城易澳科技有限公司 一种氨基甲酸酯生产中稳定热水水温的工艺

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