WO2018121660A1 - Method for removing particulates from gas - Google Patents
Method for removing particulates from gas Download PDFInfo
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- WO2018121660A1 WO2018121660A1 PCT/CN2017/119310 CN2017119310W WO2018121660A1 WO 2018121660 A1 WO2018121660 A1 WO 2018121660A1 CN 2017119310 W CN2017119310 W CN 2017119310W WO 2018121660 A1 WO2018121660 A1 WO 2018121660A1
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- gas
- particulate matter
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- particulates
- particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D51/00—Auxiliary pretreatment of gases or vapours to be cleaned
- B01D51/02—Amassing the particles, e.g. by flocculation
- B01D51/04—Amassing the particles, e.g. by flocculation by seeding, e.g. by adding particles
Definitions
- the invention belongs to the technical field of air pollution prevention and relates to a method for removing particulate matter in a gas, in particular to a method for removing particulate matter in a gas (air, flue gas, exhaust gas, etc.).
- the adsorption of activated carbon can effectively remove particulate matter, but there is a problem that the adsorption material is saturated to lower its adsorption performance, and the invention effectively solves the problem that the adsorption property of the adsorbent is stable.
- the efficiency of removing the fine particles is improved, and the use of the existing process and equipment is not substantially affected. It is not only more efficient than the existing methods, but also economical, energy-saving, easy to implement, and can effectively remove fine particles of PM2.5 level, thus reducing the pollution of the atmosphere.
- a method for removing particulate matter in a gas comprising the steps of: adding new particulate matter to a gas that needs to be removed, adding new particulate matter in order to cause particulate matter in the gas to adhere to the added particulate matter, by filtering or other means
- the added particulate matter is separated from the raw gas to remove the original particulate matter in the gas.
- the particles are microspheres of the order of millimeters to micrometers.
- the particulate material may be a polymer material, a polymer material, a composite material, a magnetic composite material, a polyethylene foam, a polypropylene, a plastic, a rubber, a resin, a glass, or a ceramic.
- the main feature is insulation, which is easy to rub and electrify. It can be spherical or ellipsoidal or other shapes that are easy to electrify.
- the added volume fraction of the particulate matter does not exceed 25% of the total volume of the gas.
- the added volume fraction of the granules does not exceed 12% of the total volume of the gas. Adjust according to the concentration of particulate matter removed from the gas.
- the gas is suitably turbulent, so that the gas flows as much as possible through the surface of the added particle ball to increase the attraction and adhesion of the particles to the gas removed.
- the invention improves the efficiency of removing fine particles by adding charged particles in the gas, and basically does not affect the use of the existing process and equipment. It is not only more efficient than the existing methods, but also economical, energy-saving, easy to implement, and can effectively remove fine particles of PM2.5 level, thus reducing the pollution of the atmosphere.
- the adsorption performance is stabilized by the operations of cleaning and dust removal of the particulate matter added for recycling, and the problem of maintaining the adsorption capacity in the adsorption of activated carbon is solved.
- FIG. 1 is a schematic view showing a method of removing particulate matter in the gas of the present invention.
- the invention adopts a method for adding charged particles to a gas (the particle size range can be several millimeters to several micrometers according to the case), and the total addition amount does not exceed 25% of the total volume after mixing, and generally recommends no more than 12%.
- the original harmful particles in the gas are impacted or attracted to the added particulate matter, and the charged particulate matter may be added to the airflow or the gas by other means, so that the particulate matter can be formed as shown in FIG. After the particles, the particles are evenly distributed over a path or time.
- the method can be implemented by adding in the existing flue gas treatment process, collecting and recovering after the flue gas (exhaust gas) passage runs for a certain path (or time), and adding the particulate matter to be properly cleaned, treated, and recycled. Or discard after repeated use.
- the technical solution of the present invention can spray a polyethylene particle ball with a small density at the front end portion of the channel of the existing bag filter system.
- the length of the self-channel before the addition of the particle ball is appropriate and insulated, so that the particle balls are sufficiently rubbed against each other.
- An obstacle is placed in the cross section of the flue gas passage to make the flue gas passage form a turbulent state, so that the particle ball is thoroughly mixed with the flue gas, and then the particles are filtered out through the bag filter. It is also possible to eject the pellets in the flue gas passage after passing through the baghouse and then filter them out. According to the content of the particulate matter in the flue gas, multiple and multiple injections and filtration are performed.
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- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Description
本发明属于大气污染防治技术领域，涉及一种气体中去除颗粒物的方法，具体地说，涉及一种气体(空气、烟气、尾气等)中去除颗粒物的方法。The invention belongs to the technical field of air pollution prevention and relates to a method for removing particulate matter in a gas, in particular to a method for removing particulate matter in a gas (air, flue gas, exhaust gas, etc.).
人类长期接触空气中的污染颗粒会增加患肺癌、高血压等心肺疾病的风险，即使颗粒浓度低于法律上限也是如此。在现阶段颗粒或其他空气污染物浓度短期内还有上升，会增加患心肺疾病以及由此引起的其他各类疾病的风险。雾霾天气，尤其冬天的北方城市的颗粒物浓度过大引起的雾霾天气对人们的健康危害极大，而现阶段我国控制颗粒物的排放，除加强立法及规范生产等措施外，仍缺乏行之有效的去除细小颗粒的方法。尤其是现有普遍采用的袋式除尘方法，很难去除微米级的颗粒物，而其他喷水喷雾等方法受装备等因素的影响，使企业的经济投入过高，严重影响企业的进一步发展。Long-term exposure to contaminated particles in the air increases the risk of heart and lung disease such as lung cancer and high blood pressure, even if the particle concentration is below the legal limit. At this stage, the concentration of particles or other air pollutants will increase in the short term, which will increase the risk of heart and lung disease and other diseases caused by it. The haze weather, especially the smog weather caused by the excessive concentration of particulate matter in the northern cities of winter, is extremely harmful to people's health. At this stage, the control of particulate matter emissions in China is still lacking in addition to strengthening legislation and regulating production. An effective method for removing fine particles. In particular, the commonly used bag type dust removal method is difficult to remove micron-sized particles, and other methods such as water spray are affected by equipment and other factors, which makes the enterprise's economic investment too high, which seriously affects the further development of the enterprise.
目前的烟气尾气除尘工艺方法中，传统布袋除尘对微米级尤其是对人体健康危害很大的细微颗粒物的去除效果不甚理想，即使经过改良的带电布袋除尘，以及喷水喷雾等工艺方法，在有效除尘及降低经济投入上都不堪满意，因此导致企业在此方面积极性不够。In the current flue gas exhaust dust removal process, the traditional bag dust removal effect on the micron-scale, especially the fine particles that are harmful to human health, is not satisfactory, even after the improved charged bag dust removal, water spray and other processes, Unsatisfactory in effective dust removal and economic investment reduction, the company is not motivated in this regard.
通过活性炭过滤吸附可以有效的去除颗粒物，但是存在吸附材料饱和而使其吸附性能下降的问题，本发明有效的解决了吸附材料吸附性能稳定的问题。The adsorption of activated carbon can effectively remove particulate matter, but there is a problem that the adsorption material is saturated to lower its adsorption performance, and the invention effectively solves the problem that the adsorption property of the adsorbent is stable.
发明内容Summary of the invention
本发明的目的在于提供一种气体中去除颗粒物的方法，通过在气体中添加带电颗粒物，提高了去除细微颗粒的效率，基本不影响现有工艺方法及设备的使用。不但效率高于现有方式方法，而且经济、节能，易于实现，且可以有效去除PM2.5级别的细微颗粒，从而减轻对大气的污染。It is an object of the present invention to provide a method for removing particulate matter in a gas. By adding charged particulate matter to the gas, the efficiency of removing the fine particles is improved, and the use of the existing process and equipment is not substantially affected. It is not only more efficient than the existing methods, but also economical, energy-saving, easy to implement, and can effectively remove fine particles of PM2.5 level, thus reducing the pollution of the atmosphere.
其具体技术方案为：The specific technical solution is:
一种气体中去除颗粒物的方法，包括以下步骤：在需要进行去除的气体中添加新的颗粒物，加入新的颗粒物是为了使气体中的颗粒物附着在所加的颗粒物上，通过滤除或其他方式将添加的颗粒物与原气体分离，实现气体中原有颗粒物的去除。A method for removing particulate matter in a gas, comprising the steps of: adding new particulate matter to a gas that needs to be removed, adding new particulate matter in order to cause particulate matter in the gas to adhere to the added particulate matter, by filtering or other means The added particulate matter is separated from the raw gas to remove the original particulate matter in the gas.
进一步，所述颗粒物为毫米级小球到微米级的微球。Further, the particles are microspheres of the order of millimeters to micrometers.
进一步，所述颗粒物材料可以为所述颗粒物材料为高分子材料，聚合物材料等，复合物材料，磁性复合材料，聚乙烯泡沫、聚丙烯、塑料、橡胶、树脂、玻璃、陶瓷。主要特点是绝缘，易于摩擦起电带电，可以是圆球形或椭球形或其他易于起电带电的形状。Further, the particulate material may be a polymer material, a polymer material, a composite material, a magnetic composite material, a polyethylene foam, a polypropylene, a plastic, a rubber, a resin, a glass, or a ceramic. The main feature is insulation, which is easy to rub and electrify. It can be spherical or ellipsoidal or other shapes that are easy to electrify.
进一步，添加新的颗粒物之前，加强其自身相互摩擦或与其他材料摩擦使之带电，或者同时采用电极辅助其带电，使进入气体中的添加颗粒带更多电荷，在颗粒物周围形成更强电场，从而增强其对气体中细微颗粒物的吸引、附着。Further, before adding new particles, strengthen themselves to rub each other or rub against other materials to electrify them, or use electrodes to assist them to charge, so that the added particles entering the gas carry more charge and form a stronger electric field around the particles. Thereby enhancing its attraction and adhesion to fine particles in the gas.
进一步，所述颗粒物的添加量体积分数不超过气体总体积的25％。Further, the added volume fraction of the particulate matter does not exceed 25% of the total volume of the gas.
再进一步，所述粒物的添加量体积分数不超过气体总体积的12％。根据气体中去 除颗粒物浓度调整。Still further, the added volume fraction of the granules does not exceed 12% of the total volume of the gas. Adjust according to the concentration of particulate matter removed from the gas.
适当使气体形成紊流，使气体尽可能的流经所添加颗粒球的表面，以增加颗粒对气体中去除物的吸引、附着。The gas is suitably turbulent, so that the gas flows as much as possible through the surface of the added particle ball to increase the attraction and adhesion of the particles to the gas removed.
与现有技术相比，本发明的有益效果为：Compared with the prior art, the beneficial effects of the present invention are:
本发明通过在气体中添加带电颗粒物，提高了去除细微颗粒的效率，基本不影响现有工艺方法及设备的使用。不但效率高于现有方式方法，而且经济、节能，易于实现，且可以有效去除PM2.5级别的细微颗粒，从而减轻对大气的污染。The invention improves the efficiency of removing fine particles by adding charged particles in the gas, and basically does not affect the use of the existing process and equipment. It is not only more efficient than the existing methods, but also economical, energy-saving, easy to implement, and can effectively remove fine particles of PM2.5 level, thus reducing the pollution of the atmosphere.
通过对回收所添加的颗粒物清洗、除尘等操作保持吸附性能的稳定，解决了活性炭吸附中吸附能力保持的问题。The adsorption performance is stabilized by the operations of cleaning and dust removal of the particulate matter added for recycling, and the problem of maintaining the adsorption capacity in the adsorption of activated carbon is solved.
图1是本发明气体中去除颗粒物的方法示意图。BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a method of removing particulate matter in the gas of the present invention.
下面结合具体附图和实施例对本发明的技术方案作进一步详细地说明。The technical solution of the present invention will be further described in detail below with reference to the specific drawings and embodiments.
本发明本发明采用一种向气体中添加带电颗粒的方法(其粒径范围可据情况在几毫米到几微米)，总添加量不超过混合后总体积的25％，一般推荐不超过12％，使气体中原有有害颗粒物撞击或被吸引附着在所添加颗粒物上，其带电颗粒物的添加可以采用向气流、气体中喷射的方式也可采用其他方式，使颗粒物尽量形成图1所示效果，添加颗粒后，颗粒均匀分布一段路径或时间。The invention adopts a method for adding charged particles to a gas (the particle size range can be several millimeters to several micrometers according to the case), and the total addition amount does not exceed 25% of the total volume after mixing, and generally recommends no more than 12%. The original harmful particles in the gas are impacted or attracted to the added particulate matter, and the charged particulate matter may be added to the airflow or the gas by other means, so that the particulate matter can be formed as shown in FIG. After the particles, the particles are evenly distributed over a path or time.
其实现方式可采用在现有烟气处理过程中进行添加，在烟气(尾气)通道运行一段路径(或时间)之后进行收集回收，将添加颗粒物进行适当的清洁、处理，进行回收再利用，或者经多次使用后废弃。The method can be implemented by adding in the existing flue gas treatment process, collecting and recovering after the flue gas (exhaust gas) passage runs for a certain path (or time), and adding the particulate matter to be properly cleaned, treated, and recycled. Or discard after repeated use.
本发明的技术方案可在现有布袋除尘器系统通道前端部分喷射密度较小的聚乙烯颗粒球，颗粒球的添加前的自身通道长度适当且绝缘，使颗粒球之间足够相互摩擦，通过在烟气通道横截面中安设障碍，使烟气通道形成紊流状态，使颗粒球与烟气充分混合，之后通过布袋除尘器将颗粒滤出。也可在经过布袋除尘器之后的烟气通道中喷射颗粒球，之后再进行滤除。依据烟气中颗粒物去除后的含量进行多次、多点的喷射及滤除。The technical solution of the present invention can spray a polyethylene particle ball with a small density at the front end portion of the channel of the existing bag filter system. The length of the self-channel before the addition of the particle ball is appropriate and insulated, so that the particle balls are sufficiently rubbed against each other. An obstacle is placed in the cross section of the flue gas passage to make the flue gas passage form a turbulent state, so that the particle ball is thoroughly mixed with the flue gas, and then the particles are filtered out through the bag filter. It is also possible to eject the pellets in the flue gas passage after passing through the baghouse and then filter them out. According to the content of the particulate matter in the flue gas, multiple and multiple injections and filtration are performed.
以上所述，仅为本发明较佳的具体实施方式，本发明的保护范围不限于此，任何熟悉本技术领域的技术人员在本发明披露的技术范围内，可显而易见地得到的技术方案的简单变化或等效替换均落入本发明的保护范围内。The above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and any technical person skilled in the art can clearly see that the technical solution is obvious within the technical scope of the present disclosure. Variations or equivalent substitutions are within the scope of the invention.
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Priority Applications (1)
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| NZ755782A NZ755782A (en) | 2016-12-29 | 2017-12-28 | Method for removing particulates from gas |
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| CN201611272126.X | 2016-12-29 | ||
| CN201611272126.XA CN106582185A (en) | 2016-12-29 | 2016-12-29 | Method for removing particulate matters from gas |
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| CN106582185A (en) * | 2016-12-29 | 2017-04-26 | 潍坊学院 | Method for removing particulate matters from gas |
| CN107413530B (en) * | 2017-05-22 | 2019-01-25 | 潍坊学院 | Method for filtering non-gaseous substances in gases by charged particles |
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| WO1998011992A1 (en) * | 1996-09-20 | 1998-03-26 | Philp Sanborn F | Removal of respirable particulate matter from flue gases |
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| JP4725149B2 (en) * | 2005-03-18 | 2011-07-13 | トヨタ自動車株式会社 | Exhaust gas purification device for internal combustion engine |
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| CN102773162B (en) * | 2012-08-02 | 2015-05-20 | 上海交通大学 | Method for removing fine particles and heavy metals in coal fume |
| CN104971583A (en) * | 2014-04-08 | 2015-10-14 | 青岛华科联合能源科技有限公司 | Agglomeration removal device of desulfurizing tower |
| CN104147890B (en) * | 2014-08-28 | 2015-08-05 | 东南大学 | Utilize attapulgite clay suspension to reunite and trap coal-fired PM 2.5method |
| CN104399349B (en) * | 2014-11-28 | 2016-04-27 | 江苏大学 | A kind of method reducing atmosphere particle concentration |
| CN105797531B (en) * | 2016-04-28 | 2018-12-04 | 安徽工业大学 | A kind of method that agglomeration process inhibits the discharge of Ore Sintering Process fine particle |
| CN205833374U (en) * | 2016-05-19 | 2016-12-28 | 北京纳米能源与系统研究所 | A kind of dedusting module and gas dust-removing device |
| CN106178804A (en) * | 2016-07-29 | 2016-12-07 | 国电新能源技术研究院 | A kind of remove the system of fine particle in gas phase mixture |
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2016
- 2016-12-29 CN CN201611272126.XA patent/CN106582185A/en active Pending
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- 2017-12-28 WO PCT/CN2017/119310 patent/WO2018121660A1/en not_active Ceased
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| US4699633A (en) * | 1984-10-05 | 1987-10-13 | Union Oil Company Of California | Method for treating an aerosol to remove suspended particles therefrom |
| CN1096467A (en) * | 1993-06-18 | 1994-12-21 | 阿兰科环境资源公司 | The grit material in the scavenging stream and the method for pernicious gas |
| WO1998011992A1 (en) * | 1996-09-20 | 1998-03-26 | Philp Sanborn F | Removal of respirable particulate matter from flue gases |
| CN102671506A (en) * | 2012-05-10 | 2012-09-19 | 上海交通大学 | Method for cooperatively controlling multiple pollutants of flue gas by using charge adsorbent strengthened electric bag device |
| CN103830989A (en) * | 2014-03-10 | 2014-06-04 | 曹南萍 | Method for treating haze and indoor air pollution by using tourmaline honeycomb body |
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| CN106582185A (en) | 2017-04-26 |
| NZ755782A (en) | 2022-04-29 |
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