CN105413417A - 2-萘酚生产过程中的烟气治理方法 - Google Patents

2-萘酚生产过程中的烟气治理方法 Download PDF

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CN105413417A
CN105413417A CN201510760018.6A CN201510760018A CN105413417A CN 105413417 A CN105413417 A CN 105413417A CN 201510760018 A CN201510760018 A CN 201510760018A CN 105413417 A CN105413417 A CN 105413417A
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flue gas
smoke gas
temperature plasma
cooling
alkali fusion
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CN105413417B (zh
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齐雷
赫江兰
马德标
刘春生
闫凤鸣
欧向明
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TANGSHAN BAOXIANG CHEMICAL PRODUCTS Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
    • B01D53/323—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00 by electrostatic effects or by high-voltage electric fields
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06—Spray cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/12—Washers with plural different washing sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/818—Employing electrical discharges or the generation of a plasma

Abstract

本发明公开了2-萘酚生产过程中的烟气治理方法，包括两种烟气：碱熔烟气与稀释烟气，碱熔烟气：该烟气首先通过文丘里除尘器进行除尘降温；再经过喷淋洗涤塔进一步除尘降温；经过两次降温除尘的烟气进入低温等离子体烟气处理装置去除烟气异味；经过低温等离子烟气处理后的烟气达标后排放。稀释烟气：该烟气首先通过烟气冷却器降温回收稀释烟气中的冷凝水和部分粉尘，冷凝水回收利用，同时也将该烟气的温度降低；经过初步处理后的稀释烟气与经过初步处理的碱熔烟气混合，再经过喷淋洗涤塔、低温等离子体烟气处理装置的处理后达标排放。本发明具有除尘效果好、降解污染物、治理成本低、环保的特点。

Description

2-萘酚生产过程中的烟气治理方法
技术领域
本发明涉及环保领域，具体是2-萘酚生产过程中的烟气治理方法。
背景技术
磺化碱熔法以精萘为原料生产萘酚的过程中，碱熔烟气、稀释烟气量大，难处理，废气中污染物成分复杂等特点，一直是困扰2-萘酚行业发展的难题。目前对2-萘酚在生产过程中产生的烟气的处理方面还没有更好的解决办法，只是进行一些喷淋洗涤等，使其除尘效果差、污染物不被降解，排入大气中，加重环境污染。尤其在环保政策要求越来越高的今天，解决2-萘酚生产的烟气治理问题迫在眉睫。
发明内容
本发明的目的在于提供有除尘效果好、降解污染物、治理成本低、环保的2-萘酚生产过程中的烟气治理方法，以解决上述背景技术中提出的问题。
为实现上述目的，本发明提供如下技术方案：
2-萘酚生产过程中的烟气治理方法，包括两种烟气：碱熔烟气与稀释烟气，具体治理步骤如下：
碱熔烟气：该烟气首先通过文丘里除尘器进行除尘降温；再经过喷淋洗涤塔进一步除尘降温；经过两次降温除尘的烟气进入低温等离子体烟气处理装置去除烟气异味；经过低温等离子烟气处理后的烟气达标后排放；
稀释烟气：该烟气首先通过烟气冷却器降温回收稀释烟气中的冷凝水和部分粉尘，冷凝水回收利用，同时也将该烟气的温度降低；经过初步处理后的稀释烟气与经过初步处理的碱熔烟气混合，再经过喷淋洗涤塔进一步除尘降温；经过两次降温除尘的烟气进入低温等离子体烟气处理装置去除烟气异味；经过低温等离子烟气处理后的烟气达标后排放。
作为本发明进一步的方案：低温等离子体烟气处理装置的工作条件为：电源频率20-150MHz，功率是40-280W，温度为20-150℃。
与现有技术相比，本发明的有益效果是：
本发明中文丘里除尘器：是一种利用含尘气体冲击除尘器内壁或其他特殊构件上用某种方法造成的水膜，使粉尘被水膜捕获，气体得到净化的净化设备。在水膜除尘器烟气进口管道上安装一个文丘里流道，在文丘里喉口喷水，因吸水凝聚成较大颗粒的尘粒，部分在扩张段沉降下来并被水带走，从而达到除尘目的的除尘器。被水喷湿凝聚的尘粒在水膜除尘器内更容易被捕集下来，从而提高了除尘效率。
低温等离子体：低温等离子体也被称为物质存在的第四态，别于传统的固态、液态、气态，在气体的外部提供一个强大的电场，当气体被击穿，就会产生包括电子、各种离子、原子和自由基在内的混合体，这种混合体中正离子和负离子的电荷相等，整个系统呈现中性，所以被称为等离子体。当放电过程中电子温度很高，但重粒子温度很低时，整个体系呈现低温状态，所以称为低温等离子体。低温等离子体降解污染物是利用这些高能电子、自由基等活性粒子和废气中的污染物作用，使污染物分子在极短的时间内发生分解，并发生后续的各种反应以达到降解污染物的目的。
本发明对于2-萘酚烟气的治理方面具有除尘效果好、降解污染物、治理成本低、环保的特点。
附图说明
图1是2-萘酚烟气治理工艺流程简图。
具体实施方式
下面将结合本发明实施例，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例1
本发明实施例中，2-萘酚生产烟气性质：
1、碱熔烟气性质(以年产能1万吨生产装置正常生产情况为例)：①废气量大：7000-10000m3/h，且因工艺生产排产要求，废气从不同的生产锅釜产生，废气量不稳定；②污染物成分复杂：萘、萘酚、磺酸钠盐、碱、焦油类物质等，具有易凝结、易挂壁、冷凝后难处理等特点；③温度高：碱熔烟气出口处温度可达300℃以上。
2、稀释烟气性质(以年产能1万吨生产装置正常生产情况为例)：废气量瞬时量大、不稳定、温度高：稀释烟气是对应碱熔放料时产生的，碱熔物料温度在300℃左右，在排入有底水稀释锅的过程中会造成瞬时汽化，因此瞬时烟气量非常大，可在5000m3/h左右。根据生产特点属于间歇排放。
请参阅图1，2-萘酚生产过程中的烟气治理方法，由以下步骤组成：
碱熔烟气：该烟气首先通过文丘里除尘器进行除尘降温；再经过喷淋洗涤塔进一步除尘降温；经过两次降温除尘的烟气进入低温等离子体烟气处理装置去除烟气异味；经过低温等离子烟气处理后的烟气达标后排放；其中低温等离子体烟气处理装置的工作条件为：电源频率20-150MHz，功率是40-280W，温度为20-150℃。
稀释烟气：该烟气首先通过烟气冷却器降温回收稀释烟气中的冷凝水和部分粉尘，冷凝水回收利用，同时也将该烟气的温度降低；经过初步处理后的稀释烟气与经过初步处理的碱熔烟气混合，再经过喷淋洗涤塔进一步除尘降温；经过两次降温除尘的烟气进入低温等离子体烟气处理装置去除烟气异味；经过低温等离子烟气处理后的烟气达标后排放。
对于本领域技术人员而言，显然本发明不限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本发明的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。
此外，应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。

Claims (2)

1.2-萘酚生产过程中的烟气治理方法，包括两种烟气：碱熔烟气与稀释烟气，其特征在于，具体治理步骤如下：
碱熔烟气：该烟气首先通过文丘里除尘器进行除尘降温；再经过喷淋洗涤塔进一步除尘降温；经过两次降温除尘的烟气进入低温等离子体烟气处理装置去除烟气异味；经过低温等离子烟气处理后的烟气达标后排放；
稀释烟气：该烟气首先通过烟气冷却器降温回收稀释烟气中的冷凝水和部分粉尘，冷凝水回收利用，同时也将该烟气的温度降低；经过初步处理后的稀释烟气与经过初步处理的碱熔烟气混合，再经过喷淋洗涤塔进一步除尘降温；经过两次降温除尘的烟气进入低温等离子体烟气处理装置去除烟气异味；经过低温等离子烟气处理后的烟气达标后排放。
2.根据权利要求1所述的2一萘酚生产过程中的烟气治理方法，其特征在于，低温等离子体烟气处理装置的工作条件为：电源频率20-150MHz，功率是40-280W，温度为20-150℃。
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JPH11197432A (ja) * 1998-01-20 1999-07-27 Chiyoda Engineering Kk 集塵方法及びその装置
CN101579598A (zh) * 2009-03-30 2009-11-18 宝鸡阜丰生物科技有限公司 利用等离子反应器处理氨基酸发酵废气新工艺
CN102872667A (zh) * 2012-09-11 2013-01-16 济宁阳光煤化有限公司 2-萘酚碱熔尾气处理工艺
CN103111166A (zh) * 2013-03-08 2013-05-22 山东科源化工有限公司 2,4-d废气的处理方法

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Inventor before: Qi Lei

Inventor before: He Jianglan

Inventor before: Ma Debiao

Inventor before: Liu Chunsheng

Inventor before: Yan Fengming

Inventor before: Ou Xiangming

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Denomination of invention: Flue gas treatment methods in 2-naphthol production

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Denomination of invention: Smoke treatment methods in the production process of 2-naphthol

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