CN106881060A - 一种脱硫脱硝高效吸附剂的制备方法 - Google Patents

一种脱硫脱硝高效吸附剂的制备方法 Download PDF

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CN106881060A
CN106881060A CN201510937320.4A CN201510937320A CN106881060A CN 106881060 A CN106881060 A CN 106881060A CN 201510937320 A CN201510937320 A CN 201510937320A CN 106881060 A CN106881060 A CN 106881060A
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林宇
王福明
崔薇薇
曾凡东
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Yingkou Magnesia Materials Research Institute Co Ltd
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    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/02Separation 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 adsorption, e.g. preparative gas chromatography
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    • B01J20/041Oxides or hydroxides
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
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    • B01D2253/1128Metal sulfides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Abstract

本发明公开了一种脱硫脱硝高效吸附剂的制备方法,所述制备方法包括以下步骤:(1)混合:将纳米氧化镁粉体,加入到以水为溶剂混合(30~50℃下溶解)均匀的MgSO4·7H2O和甜津粉增稠剂的混合液中,混合均匀并搅拌用水调至可成型的柔软状态;(2)成型:采用挤条机进行成型处理,挤出细条状的纳米氧化镁吸附剂;(3)干燥:在120℃下,用烘箱干燥吸附剂10min;(4)造粒:待吸附剂干燥好后,切成一定长度大小的细条;(5)焙烧:在电阻炉中一定温度下升温活化焙烧,取出室温冷却,即为颗粒状纳米氧化镁吸附剂。本发明工艺条件简单,反应条件温和,制得的脱硫脱硝高效吸附剂安全环保,效果稳定良好,有极大的市场前景。

Description

一种脱硫脱硝高效吸附剂的制备方法
技术领域
本发明涉及到精细化工领域,特别涉及一种脱硫脱硝高效吸附剂的制备方法。
背景技术
我国是世界上最大的煤炭生产国和消费国,煤炭在我国的能源结构仍占很大比例,据统计,我国约80%的电力能源、70%的工业燃料、60%的化工原料、80%的供热和民用燃料都来自于煤。随着全球经济的高速发展,煤的开发利用已经给环境带来了严重的污染,特别是燃煤电厂锅炉排放出大量的硫氧化物和氮氧化物约占和、总排放量的一更进一步加剧了环境的恶化。其中大气烟尘、酸雨、温室效应和臭氧层的破坏已成为危害人类生存的四大杀手。燃煤烟气所含的烟尘、SO2、NOX等有害物质是造成大气污染、酸雨和温室效应的主要根源.
因此,在我国对燃煤烟气进行脱硫脱硝的任务刻不容缓,如何经济有效的控制烟气中和SO2、NOx的排放是能源和环保领域函待解决的关键性问题。由于分步脱硫脱硝技术存在流程复杂、占地面积大、运行成本高等缺点,因此开发技术简单、运行成本低、运行稳定的同时脱硫脱硝技术成为今后燃煤烟气治理技术发展的重要方向之一。
目前,烟气同时脱硫脱硝技术可分为两大类,即炉内燃烧过程的同时脱除技术和燃烧后烟气中的同时脱除技术,其中燃烧后烟气脱硫脱硝是今后进行大规模工业应用的重点。典型的工艺有干法和湿法两种干式工艺包括电子束照射法、固相吸收和再生法及吸收剂喷射法等湿式工艺包括氧化吸收法和铁的鳌合物吸收法等。
干法脱硫脱硝工艺过程简单、无污水和污酸处理问题,且净化后烟气利于烟囱排放。吸附法具有干法脱硫脱硝的优点,且吸附剂能反复多次利用,故越来越受到重视。对于烟气脱硫脱硝,吸附剂的选择与控制是技术关键。同时脱硫脱硝的效率涉及到吸附剂的物理性能、化学性质、配置等因素,开发出一种脱除效率高、工艺简单、有效、经济实用并且同时脱硫脱硝的高效吸附剂成为国内外研究的热点。
发明内容
针对现有脱硫脱硝的高效吸附剂技术空白的现状,本发明提供一种脱硫脱硝高效吸附剂的制备方法。
为实现上述目的,本发明采用的技术方案是:一种脱硫脱硝高效吸附剂的制备方法,包括以下步骤:
(1)混合:将纳米氧化镁粉体,加入到以水为溶剂混合(30~50℃下溶解)均匀的MgSO4·7H2O和甜津粉增稠剂的混合液中,混合均匀并搅拌用水调至可成型的柔软状态;
(2)成型:采用挤条机进行成型处理,挤出细条状的纳米氧化镁吸附剂;
(3)干燥:在120℃下,用烘箱干燥吸附剂10min;
(4)造粒:待吸附剂干燥好后,切成一定长度的细条;
(5)焙烧:在电阻炉中一定温度下升温活化焙烧,取出室温冷却,即为颗粒状纳米氧化镁吸附剂。
进一步地,步骤(1)所使用的原料为纳米级氧化镁粉体,其粒径分布为5~10nm。
进一步地,所述增稠剂中纳米氧化镁粉体:MgSO4·7H2O:甜津粉=70~80:30~35:1。
进一步地,所述焙烧过程中电阻炉温度为400~700℃,活化时间为2~4h。
进一步地,所述成型过程中细条状的纳米氧化镁吸附剂的直径为1~3mm。
进一步地,所属造粒过程中,吸附剂长度为5~10mm。
本发明一种脱硫脱硝高效吸附剂的制备方法步骤科学、合理,脱除效率高、工艺简单有效、经济实用,制得的脱硫脱硝高效吸附剂属于环境友好型污染治理产品,处理后达到国家最新的燃煤烟气的排放标准要求,具有远期应用前景及价值。
具体实施方式
本发明公开了一种脱硫脱硝高效吸附剂的制备方法,具体制备方法包括以下步骤:(1)混合:将纳米氧化镁粉体,加入到以水为溶剂混合(30~50℃下溶解)均匀的MgSO4·7H2O和甜津粉增稠剂的混合液中,混合均匀并搅拌用水调至可成型的柔软状态;(2)成型:采用挤条机进行成型处理,挤出细条状的纳米氧化镁吸附剂;(3)干燥:在120℃下,用烘箱干燥吸附剂10min;(4)造粒:待吸附剂干燥好后,切成一定长度大小的细条;(5)焙烧:在电阻炉中一定温度下升温活化焙烧,取出室温冷却,即为颗粒状纳米氧化镁吸附剂。
下面结合实施例对本发明进行详细说明:
实施例1
将纳米氧化镁粉体、MgSO4·7H2O和甜津粉按照质量比75:32:1的比例混合,加入去离子水为溶剂,在40℃的温度下混合均匀并搅拌,调至可成型的柔软状态;采用挤条机进行成型处理,挤出直径为2mm细条状的纳米氧化镁吸附剂;在120℃下,用烘箱干燥吸附剂10min,待吸附剂干燥好后,切成5mm大小的细条;在电阻炉中500℃下升温活化焙烧3h,取出室温冷却,即为颗粒状纳米氧化镁吸附剂。
在烟气温度150℃、床层高度5cm、O2含量为7.5%、SO2浓度约为2000mg/m3、NO浓度约为500mg/m3的条件下,在连续处理60min后SO2和NOx的脱除效率分别为98.03%、85.74%,吸附剂的稳定性较好。
以上内容是结合优选技术方案对本发明所做的进一步详细说明,不能认定发明的具体实施仅限于这些说明。对本发明所属技术领域的普通技术人员来说,在不脱离本发明的构思的前提下,还可以做出简单的推演及替换,都应当视为本发明的保护范围。

Claims (6)

1.一种脱硫脱硝高效吸附剂的制备方法,其特征在于,包括以下步骤:
(1)混合:将纳米氧化镁粉体,加入到以水为溶剂混合(30~50℃下溶解)均匀的MgSO4·7H2O和甜津粉增稠剂的混合液中,混合均匀并搅拌用水调至可成型的柔软状态;
(2)成型:采用挤条机进行成型处理,挤出细条状的纳米氧化镁吸附剂;
(3)干燥:在120℃下,用烘箱干燥吸附剂10min;
(4)造粒:待吸附剂干燥好后,切成一定长度的细条;
(5)焙烧:在电阻炉中一定温度下升温活化焙烧,取出室温冷却,即为颗粒状纳米氧化镁吸附剂。
2.根据权利要求1一种脱硫脱硝高效吸附剂的制备方法,其特征在于,所使用的原料为纳米级氧化镁粉体,其粒径分布为5~10nm。
3.根据权利要求1一种脱硫脱硝高效吸附剂的制备方法,其特征在于,所述增稠剂中纳米氧化镁粉体:MgSO4·7H2O:甜津粉=70~80:30~35:1。
4.根据权利要求1一种脱硫脱硝高效吸附剂的制备方法结方法,其特征在于,所述焙烧过程中电阻炉温度为400~700℃,活化时间为2~4h。
5.根据权利要求1一种脱硫脱硝高效吸附剂的制备方法,其特征在于,所述成型过程中细条状的纳米氧化镁吸附剂的直径为1~3mm。
6.根据权利要求1一种脱硫脱硝高效吸附剂的制备方法,其特征在于,所属造粒过程中,吸附剂长度为5~10mm。
CN201510937320.4A 2015-12-15 2015-12-15 一种脱硫脱硝高效吸附剂的制备方法 Pending CN106881060A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019062453A1 (zh) * 2017-09-30 2019-04-04 中晶环境科技股份有限公司 基于臭氧氧化的胶凝材料的制造方法
WO2019062454A1 (zh) * 2017-09-30 2019-04-04 中晶环境科技股份有限公司 胶凝材料及其制造方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019062453A1 (zh) * 2017-09-30 2019-04-04 中晶环境科技股份有限公司 基于臭氧氧化的胶凝材料的制造方法
WO2019062454A1 (zh) * 2017-09-30 2019-04-04 中晶环境科技股份有限公司 胶凝材料及其制造方法
US11339091B2 (en) * 2017-09-30 2022-05-24 Environment Sustainable System Engineering Technology Co., Ltd. Cementitious material and production method thereof

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Application publication date: 20170623