CN107487977A - 一种烟气脱硫吸附剂的制备方法 - Google Patents

一种烟气脱硫吸附剂的制备方法 Download PDF

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CN107487977A
CN107487977A CN201710665003.0A CN201710665003A CN107487977A CN 107487977 A CN107487977 A CN 107487977A CN 201710665003 A CN201710665003 A CN 201710665003A CN 107487977 A CN107487977 A CN 107487977A
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flue gas
adsorbent
gas desulfurization
sludge
preparing
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肖护兵
徐萌
郭兆民
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Jiangsu Pecno Environmental Engineering Technology Development Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • 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
    • B01D53/02—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 adsorption, e.g. preparative gas chromatography
    • B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/30—Physical properties of adsorbents
    • B01D2253/302—Dimensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/302—Sulfur oxides
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)

Abstract

本发明公开了一种烟气脱硫吸附剂的制备方法，以石化污泥为原料，采用热解法制备烟气脱硫吸附剂，并与商品活性炭对比进行了孔结构及元素分析性质表征。结果表明，最佳吸附条件为:SO2‑O2‑N2体系:SO2质量浓度2021.38mg/m3，烟气流速4.25m/min，温度40℃，O2质量分数12％，污泥吸附剂平均脱硫效率为73％，吸附容量为9.98mg/g；SO2‑O2‑H2O(g)‑N2体系：SO2质量浓度2021.38mg/m3，烟气流速4.25m/min，温度60℃，O2质量分数12％，H2O(g)质量分数12％，污泥吸附剂平均脱硫效率为80％，吸附容量为15.20mg/g。

Description

一种烟气脱硫吸附剂的制备方法
技术领域
本发明涉及一种烟气脱硫吸附剂的制备方法。
背景技术
石油化学工业每年产生约5×106吨的污泥，目前处理方法主要有农用、填埋、焚烧等。石化污泥含水率高、含有石油类物质及一些有害化学物质，处理不当将对环境造成很大的污染。由于石化污泥含炭较多，可通过化学途径将其制成价格低廉的吸附剂，以综合利用废物。我国环保领域的另一个难题是SO2废气的处理，烟气脱硫技术至今已有200多种方法，但以石化污泥制备吸附剂来脱除烟气中SO2的研究在国内外仍未见报道。
因此，研究和开发石化污泥制备的烟气脱硫吸附剂具有重要的现实意义。
发明内容
发明目的：为了提高吸附剂的脱硫效率，同时消耗石化污泥节能减排，本发明以石化污泥为原料，采用热解法制备烟气脱硫吸附剂，与商品活性炭对比进行了孔结构及元素分析性质表征，并分析烟气的SO2浓度、流速、温度、O2及H2O(g)的含量对石化污泥吸附剂脱硫效率的影响，确定最佳吸附条件。
技术方案：为了提高上述性能问题，本发明所采用的技术方案为：一种烟气脱硫吸附剂的制备方法，将含水率较高的石化污泥放入烘箱，在105℃下烘24h，得到含水率低于10％的干污泥，在不锈钢加热管中装填干污泥约30g，置于SK-2-10高温管式电阻炉中进行热解，利用氮气隔绝空气，加热速率控制5℃/min，热解温度为550℃，时间1h，之后进行研磨，回收0.71～0.84mm粒径的产物，即得到污泥吸附剂，并采用等温操作的固定床反应器，分析烟气的SO2浓度、流速、温度、O2及H2O(g)的含量对石化污泥吸附剂脱硫效率的影响，确定最佳吸附条件。
更进一步的，所述SO2浓度为500～3500mg/m3。
更进一步的，所述烟气流速为1～9m/min。
更进一步的，所述温度为25～150℃。
更进一步的，所述O2含量为2～12％。
更进一步的，所述H2O(g)含量为2～12％。
有益效果：本发明提供的一种烟气脱硫吸附剂的制备方法，以石化污泥为原料，采用热解法制备烟气脱硫吸附剂，并与商品活性炭对比进行了孔结构及元素分析性质表征。结果表明，最佳吸附条件为:SO2-O2-N2体系:SO2质量浓度2021.38mg/m3，烟气流速4.25m/min，温度40℃，O2质量分数12％，污泥吸附剂平均脱硫效率为73％，吸附容量为9.98mg/g；SO2-O2-H2O(g)-N2体系：SO2质量浓度2021.38mg/m3，烟气流速4.25m/min，温度60℃，O2质量分数12％，H2O(g)质量分数12％，污泥吸附剂平均脱硫效率为80％，吸附容量为15.20mg/g。
具体实施方式
下面结合实施例对本发明作进一步的详细说明：
实施例1：
一种烟气脱硫吸附剂的制备方法，包括如下步骤：将含水率较高的石化污泥放入烘箱，在105℃下烘24h，得到含水率低于10％的干污泥，在不锈钢加热管中装填干污泥约30g，置于SK-2-10高温管式电阻炉中进行热解，利用氮气隔绝空气，加热速率控制5℃/min，热解温度为550℃，时间1h，之后进行研磨，回收0.71～0.84mm粒径的产物，得到污泥吸附剂，并采用等温操作的固定床反应器，确定烟气的SO2浓度为1000mg/m3、流速为2m/min、温度为40℃、O2的含量为12％，H2O(g)的含量为12％，得到污泥吸附剂的平均脱硫效率及吸附容量。
实施例2：
一种烟气脱硫吸附剂的制备方法，包括如下步骤：将含水率较高的石化污泥放入烘箱，在105℃下烘24h，得到含水率低于10％的干污泥，在不锈钢加热管中装填干污泥约30g，置于SK-2-10高温管式电阻炉中进行热解，利用氮气隔绝空气，加热速率控制5℃/min，热解温度为550℃，时间1h，之后进行研磨，回收0.71～0.84mm粒径的产物，得到污泥吸附剂，并采用等温操作的固定床反应器，确定烟气的SO2浓度为2000mg/m3、流速为4m/min、温度为60℃、O2的含量为12％、H2O(g)的含量为12％，得到污泥吸附剂的平均脱硫效率及吸附容量。
最后应说明的是：以上实施例仅用以说明本发明而并非限制本发明所描述的技术方案，因此，尽管本说明书参照上述的各种实施例对本发明已进行了详细的说明，但是，本领域的普通技术人员应当理解，仍然可以对本发明进行修改或等同替换，而一切不脱离本发明的精神和范围的技术方案以及改进，其均应涵盖在本发明的权利要求范围中。

Claims (6)

1.一种烟气脱硫吸附剂的制备方法，其特征在于，包括如下步骤：将含水率较高的石化污泥放入烘箱，在105℃下烘24h，得到含水率低于10％的干污泥，在不锈钢加热管中装填干污泥约30g，置于SK-2-10高温管式电阻炉中进行热解，利用氮气隔绝空气，加热速率控制5℃/min，热解温度为550℃，时间1h，之后进行研磨，回收0.71～0.84mm粒径的产物，即得到污泥吸附剂，并采用等温操作的固定床反应器，分析烟气的SO2浓度、流速、温度、O2及H2O(g)的含量对石化污泥吸附剂脱硫效率的影响，确定最佳吸附条件。
2.根据权利要求1所述的烟气脱硫吸附剂的改性制备方法，其特征在于：所述SO2浓度为500～3500mg/m3。
3.根据权利要求1所述的烟气脱硫吸附剂的改性制备方法，其特征在于：所述烟气流速为1～9m/min。
4.根据权利要求1所述的烟气脱硫吸附剂的改性制备方法，其特征在于：所述温度为25～150℃。
5.根据权利要求1所述的烟气脱硫吸附剂的改性制备方法，其特征在于：所述O2含量为2～12％。
6.根据权利要求1所述的烟气脱硫吸附剂的改性制备方法，其特征在于：所述H2O(g)含量为2～12％。
CN201710665003.0A 2017-08-07 2017-08-07 一种烟气脱硫吸附剂的制备方法 Pending CN107487977A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111689572A (zh) * 2020-04-10 2020-09-22 江苏宇益环保工程设备有限公司 自组装净水污泥挂膜悬浮载体及其制备方法与应用
CN111760551A (zh) * 2020-07-01 2020-10-13 昆明理工大学 一种利用污水处理厂污泥制备脱硫剂的方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
余兰兰等: "石化污泥制备烟气脱硫吸附剂", 《哈尔滨工业大学学报》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111689572A (zh) * 2020-04-10 2020-09-22 江苏宇益环保工程设备有限公司 自组装净水污泥挂膜悬浮载体及其制备方法与应用
CN111760551A (zh) * 2020-07-01 2020-10-13 昆明理工大学 一种利用污水处理厂污泥制备脱硫剂的方法

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