CN112961023A - 一种混苯加氢精制工艺 - Google Patents

一种混苯加氢精制工艺 Download PDF

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CN112961023A
CN112961023A CN202110059551.5A CN202110059551A CN112961023A CN 112961023 A CN112961023 A CN 112961023A CN 202110059551 A CN202110059551 A CN 202110059551A CN 112961023 A CN112961023 A CN 112961023A
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catalyst
mixing tank
mixed
heating furnace
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李云龙
管明星
刘宏敏
贾腾飞
宋建国
沈立明
安金融
张宏文
叶树岭
汪振
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Ningxia Tianyuan Petrochemical Co ltd
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    • C10G45/00—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds
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    • C10G45/04—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used
    • C10G45/06—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used containing nickel or cobalt metal, or compounds thereof
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    • C10G45/00—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds
    • C10G45/02—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing
    • C10G45/04—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used
    • C10G45/06—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used containing nickel or cobalt metal, or compounds thereof
    • C10G45/08—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used containing nickel or cobalt metal, or compounds thereof in combination with chromium, molybdenum, or tungsten metals, or compounds thereof
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Abstract

本发明公开一种混苯加氢精制工艺，其特征在于，包括送料管、送气管、混合罐和加热炉，精制步骤如下：将需要加氢精制的原料，通过送料管输送柱混合罐体内暂存，送料管内设立粗过滤结构，对原料进行粗制过滤，通过送气管将加氢反应催化剂送混合罐内，氢气与原料在混合罐内混合，通过管道将混合氢气的原料送进加热炉中进行加热混合处理，本发明的有益效果：通过孔径在15‑25nm的催化剂，能够有效的对原料的催化反应的效率和质量，通过中性的三氧化二铝为载体，能够使催化剂具有较强的加氢活性和较弱的裂解活性，进一步增加催化的效率。

Description

一种混苯加氢精制工艺
技术领域：
本发明属于加氢精制工艺技术领域，特别涉及一种混苯加氢精制工艺。
背景技术：
加氢精制是现在很多产品生产的重要步骤之一，通过在产品原料中加入氢气催化，能够有效的排出产品中中含有的众多杂质，以此提高产品的质量。
对于产品的加氢精制，由于原料分子的不同，因此对于催化剂的要求也会随着改变，现在催化剂对于产片原料的反应效率较低质量较差。
发明内容：
本发明的目的就在于为了解决上述问题而提供一种混苯加氢精制工艺，通过三个步骤，能够有效的解决上述的对于产品的加氢精制，由于原料分子的不同，因此对于催化剂的要求也会随着改变，现在催化剂对于产片原料的反应效率较低质量较差的技术问题。
为了解决上述问题，本发明提供了一种技术方案：一种混苯加氢精制工艺，其特征在于，包括送料管、送气管、混合罐和加热炉，精制步骤如下：
(1)输送原料：将需要加氢精制的原料，通过送料管输送柱混合罐体内暂存，送料管内设立粗过滤结构，对原料进行粗制过滤：
(2)输送氢气：通过送气管将加氢反应催化剂送混合罐内，氢气与原料在混合罐内混合；
(3)加热精制：通过管道将混合氢气的原料送进加热炉中进行加热混合处理。
作为优选，在步骤(1)所述的输送原料，采用内壁不沾油的拉丝不锈钢管道，在步骤(1)所述的送料管内连接3-5个拉丝不锈钢制作的滤板，且滤板之间的间距为3-10cm。
作为优选，在步骤(2)所述的输送氢气，采用防静电管道，在步骤(2)所述的送气管延伸进混合罐内，且插入原料内。
作为优选，在步骤(2)所述的加氢反应催化剂，其活性组总占比为15-35％，其中非贵金属为W、Mo、Co和Ni，贵金属为Pt和Pb。
作为优选，在步骤(2)所述的催化剂的孔径为15-25nm，在步骤(2)所述的催化剂为双重孔催化剂，且催化剂载体为中性的三氧化二铝。
作为优选，在步骤(3)所述的加热炉，其安装有稳压装置，用于稳定内部压力，在步骤(1)和步骤(2)经由混合罐混合后的原料进入加热炉内，开始加热，温度为300-450℃，压力为5-8Mpa。
作为优选，在步骤(3)所述的加热炉加热催化后通过管道输送至分馏组件内，通过分馏组件分成产品衍生物和合格产品。
本发明的有益效果：通过孔径在15-25nm的催化剂，能够有效的对原料的催化反应的效率和质量，通过中性的三氧化二铝为载体，能够使催化剂具有较强的加氢活性和较弱的裂解活性，进一步增加催化的效率。
具体实施方式：
本具体实施方式采用以下技术方案：一种混苯加氢精制工艺，其特征在于，包括送料管、送气管、混合罐和加热炉，精制步骤如下：
(1)输送原料：将需要加氢精制的原料，通过送料管输送柱混合罐体内暂存，送料管内设立粗过滤结构，对原料进行粗制过滤：
(2)输送氢气：通过送气管将加氢反应催化剂送混合罐内，氢气与原料在混合罐内混合；
(3)加热精制：通过管道将混合氢气的原料送进加热炉中进行加热混合处理。
其中，在步骤(1)所述的输送原料，采用内壁不沾油的拉丝不锈钢管道，在步骤(1)所述的送料管内连接3-5个拉丝不锈钢制作的滤板，且滤板之间的间距为3-10cm。
其中，在步骤(2)所述的输送氢气，采用防静电管道，在步骤(2)所述的送气管延伸进混合罐内，且插入原料内。
其中，在步骤(2)所述的加氢反应催化剂，其活性组总占比为15-35％，其中非贵金属为W、Mo、Co和Ni，贵金属为Pt和Pb。
其中，在步骤(2)所述的催化剂的孔径为15-25nm，在步骤(2)所述的催化剂为双重孔催化剂，且催化剂载体为中性的三氧化二铝。
其中，在步骤(3)所述的加热炉，其安装有稳压装置，用于稳定内部压力，在步骤(1)和步骤(2)经由混合罐混合后的原料进入加热炉内，开始加热，温度为300-450℃，压力为5-8Mpa。
其中，在步骤(3)所述的加热炉加热催化后通过管道输送至分馏组件内，通过分馏组件分成产品衍生物和合格产品。
具体的：一种混苯加氢精制工艺，使用时，首先将通过输气管和输油管能够将原料和氢气输送进混合罐进行混合，之后将混合后的原料通过管道送进加热炉中进行加热加压催化，在温度达到300-450℃，压力达到5-8Mpa的区间后，进行保温和稳压，使加热炉内的原料持续性的加热催化，在催化结束后通过管道将原料输送进分馏组件中，氢气被分离出来收集进行二次利用，原料分为产品衍生物和合格产品分别储存，通过大孔径和双重孔的催化剂，能够有效的保证原料的分子扩散，催化剂清除杂质的活性也会显著增加，以此实现高效率的对原料进行催化反应。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点，本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内，本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (7)

1.一种混苯加氢精制工艺，其特征在于，包括送料管、送气管、混合罐和加热炉，精制步骤如下：
步骤(1)输送原料：将需要加氢精制的原料，通过送料管输送柱混合罐体内暂存，送料管内设立粗过滤结构，对原料进行粗制过滤：
步骤(2)输送氢气：通过送气管将加氢反应催化剂送混合罐内，氢气与原料在混合罐内混合；
步骤(3)加热精制：通过管道将混合氢气的原料送进加热炉中进行加热混合处理。
2.根据权利要求1所述的一种混苯加氢精制工艺，其特征在于：在步骤(1)所述的输送原料，采用内壁不沾油的拉丝不锈钢管道，在步骤(1)所述的送料管内连接3-5个拉丝不锈钢制作的滤板，且滤板之间的间距为3-10cm。
3.根据权利要求1所述的一种混苯加氢精制工艺，其特征在于：在步骤(2)所述的输送氢气，采用防静电管道，在步骤(2)所述的送气管延伸进混合罐内，且插入原料内。
4.根据权利要求1所述的一种混苯加氢精制工艺，其特征在于：在步骤(2)所述的加氢反应催化剂，其活性组总占比为15-35％，其中非贵金属为W、Mo、Co和Ni，贵金属为Pt和Pb。
5.根据权利要求1所述的一种混苯加氢精制工艺，其特征在于：在步骤(2)所述的催化剂的孔径为15-25nm，在步骤(2)所述的催化剂为双重孔催化剂，且催化剂载体为中性的三氧化二铝。
6.根据权利要求1所述的一种混苯加氢精制工艺，其特征在于：在步骤(3)所述的加热炉，其安装有稳压装置，用于稳定内部压力，在步骤(1)和步骤(2)经由混合罐混合后的原料进入加热炉内，开始加热，温度为300-450℃，压力为5-8Mpa。
7.根据权利要求1所述的一种混苯加氢精制工艺，其特征在于：在步骤(3) 所述的加热炉加热催化后通过管道输送至分馏组件内，通过分馏组件分成产品衍生物和合格产品。
CN202110059551.5A 2021-01-18 2021-01-18 一种混苯加氢精制工艺 Pending CN112961023A (zh)

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