WO2024045684A1 - 一种平板式催化剂粉体分离和回收装置及磨损比例确定方法 - Google Patents

一种平板式催化剂粉体分离和回收装置及磨损比例确定方法 Download PDF

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Publication number
WO2024045684A1
WO2024045684A1 PCT/CN2023/092638 CN2023092638W WO2024045684A1 WO 2024045684 A1 WO2024045684 A1 WO 2024045684A1 CN 2023092638 W CN2023092638 W CN 2023092638W WO 2024045684 A1 WO2024045684 A1 WO 2024045684A1
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Prior art keywords
powder
recovery
flat
plate
catalyst
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PCT/CN2023/092638
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English (en)
French (fr)
Inventor
包英捷
郝杰勇
余长开
吴迅
周显春
梁晏萱
唐荣富
陈飞云
罗彬�
廖开友
张丹平
李超
孔凡海
王乐乐
鲍强
何川
Original Assignee
华能重庆珞璜发电有限责任公司
苏州西热节能环保技术有限公司
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Application filed by 华能重庆珞璜发电有限责任公司, 苏州西热节能环保技术有限公司 filed Critical 华能重庆珞璜发电有限责任公司
Priority to US18/343,752 priority Critical patent/US20240066556A1/en
Publication of WO2024045684A1 publication Critical patent/WO2024045684A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/30—Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B2101/00—Type of solid waste
    • B09B2101/95—Waste catalysts; Waste ion exchange materials; Waste adsorbents

Definitions

  • the invention belongs to the field of catalyst separation and relates to a flat-plate catalyst powder separation and recovery device and a method for determining the wear ratio.
  • SCR flue gas catalysts are mainly divided into honeycomb catalysts and flat plate catalysts.
  • the flat-plate catalyst uses a flat metal mesh as the base material, which is pressed and roasted.
  • the flat-plate catalyst can effectively adapt to harsh flue gas conditions such as high dust and high arsenic, and has a strong stainless steel metal mesh that will not collapse. It is widely cited in SCR denitration.
  • the main active material of the flat catalyst is the catalyst coating coated on the metal mesh, which is the basis of its application. Therefore, an important indicator for evaluating the flat catalyst is the wear area of the surface coating, that is, the wear ratio.
  • Flat-plate catalysts generally have 3 to 4 bends within the width of the single plate.
  • the bending length is difficult to measure.
  • the wear shape is irregular in daily use. It is more difficult to obtain the wear ratio through conventional measurements, which makes it difficult to evaluate plate-type catalysts. and scrapping use brings inconvenience. Therefore, it is necessary to develop a reliable and easy-to-operate device and supporting methods to accurately evaluate the wear ratio of flat-plate catalysts.
  • the purpose of the present invention is to solve the problem in the prior art that flat-plate catalysts have bends, which will produce large errors through conventional measurements, and the wear at the bends cannot be accurately obtained, thus reducing the accuracy of testing the catalyst wear, and provide a A flat-plate catalyst powder separation and recovery device and a method for determining the wear ratio.
  • a flat-plate catalyst powder separation and recovery device including a powder separation unit and a powder recovery unit;
  • the powder separation unit includes a driving motor, a counter-rotating roller, a roller, a powder accumulation bin, a catalyst powder outlet and a casing.
  • the counter-rotating roller and the roller are arranged in the casing.
  • the driving motor drives the counter-rotating roller to work.
  • the rotary rollers are arranged at intervals, one end of the powder accumulation bin is connected to the shell, and the other end is connected to the catalyst powder outlet;
  • the powder recovery unit includes an induced draft fan, a powder recovery inlet, a cyclone outlet, a primary filter, a movable sealing piece, a secondary filter, a cyclone channel and a recovery shell.
  • the induced draft fan is connected to the induced draft fan interface, and the powder recovery inlet is provided On the outer wall of the recovery housing, the cyclone outlet is provided on the inner wall of the recovery housing.
  • a cyclone channel is provided between the powder recovery inlet and the cyclone outlet.
  • the inner wall of the recovery housing is provided with primary filters in sequence from bottom to top.
  • the cross-section size of the secondary filtration and the recovery shell is the same, an opening is provided in the middle of the primary filtration, and the primary filtration forms a tapered surface with a larger diameter at the top and a smaller diameter at the bottom;
  • the catalyst powder outlet is connected with the powder recovery inlet.
  • a movable sealing piece is provided at the middle position of the first-level filtration.
  • the counter-rotating rollers are provided with three groups.
  • the end faces of the three sets of counter-rotating rollers are located at the same height.
  • the rolls are provided in six groups.
  • the end faces of the three groups of counter-rotating rollers and the six groups of rollers are arranged in a sinusoidal manner.
  • the powder accumulation bin has a trapezoidal cross-section.
  • the present invention has the following beneficial effects:
  • the powder separation unit in the present invention can roll the flat-plate catalyst through counter-rotating rollers and rolls, so that the single plates and powder of the flat-plate catalyst can be completely separated, and through the multi-stage filtration in the powder recovery unit, the powder can be The powder can be effectively recovered after deposition, which improves the standardization of powder separation and recovery and reduces measurement errors.
  • the determination method of the wear ratio in the present invention is based on the powder separation and recovery device.
  • the accurate wear ratio is obtained through the weight comparison method, which makes up for the inability to obtain the wear in the depth direction at the bend of the flat catalyst, and is effective Measurement errors are reduced and work efficiency is improved.
  • Figure 1 is a schematic structural diagram of the powder separation unit of the present invention
  • Figure 2 is a schematic diagram of the arrangement of rollers in the powder separation unit of the present invention.
  • Figure 3 is a schematic structural diagram of the powder recovery unit of the present invention.
  • 1-powder separation unit 10-separation device inlet, 11-driving motor, 12-counter-rotating roller, 13-roller, 14-powder accumulation bin, 15-catalyst powder outlet, 16-separation device outlet, 17 - Shell, 111-flat catalyst, 2-powder recovery unit, 20-powder recovery inlet, 21-cyclone outlet, 22-primary filtration, 23-movable sealing plate, 24-secondary filtration, 25-cyclone channel, 30-primary recovery chamber, 31-secondary recovery chamber, 41-induced draft fan interface, 42-collection bin, 43-recycling shell.
  • level does not mean that the component is required to be absolutely horizontal, but may be slightly tilted.
  • horizontal only means that its direction is more horizontal than “vertical”. It does not mean that the structure must be completely horizontal, but can be slightly tilted.
  • the terms “setting”, “installation”, “connecting” and “connecting” should be understood in a broad sense.
  • they can It can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or it can be an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be an internal connection between two components.
  • the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
  • the powder separation unit 1 includes a drive motor 11, a counter-rotating roller 12, a roller 13, a powder accumulation bin 14, a catalyst powder outlet 15 and a casing 17.
  • the counter-rotating rollers 12 and 13 are arranged in the casing 17.
  • the counter-rotating rollers 12 are provided with three groups. The end faces of the three groups of counter-rotating rollers 12 are located on the same plane.
  • the rollers 13 are provided with six groups to play the role of rolling and conveying. Function, three sets of rollers 13 are respectively arranged in two intervals of three sets of counter-rotating rollers 12. The end faces of the rollers are arranged in a sinusoidal manner.
  • the drive motor 11 drives the counter-rotating rollers 12 on the same plane to perform counter-rotating rolling. When working, one end of the powder accumulation bin 14 is connected to the housing 17, and the other end is connected to the catalyst powder outlet 15.
  • the powder recovery unit 2 includes an induced draft fan, a powder recovery inlet 20, a cyclone outlet 21, a primary filter 22, a movable sealing piece 23, a secondary filter 24, a cyclone channel 25 and a recovery housing. 43;
  • the induced draft fan is connected to the induced draft fan interface 41, the powder recovery inlet 20 is set on the outer wall of the recovery shell 43, the cyclone outlet 21 is set on the inner wall of the recovery shell 43, between the powder recovery inlet 20 and the cyclone outlet 21
  • a cyclone channel 25 is provided in between, and the inner wall of the recovery housing 43 is provided with a primary filter 22 and a secondary filter 24 from bottom to top.
  • the secondary filter 24 is provided on the cross section of the recovery housing 43.
  • An opening is provided in the middle of the filter 22, and the primary filter 22 forms a tapered surface with a larger diameter and a smaller diameter.
  • the method for determining the flat-plate catalyst wear ratio based on the flat-plate catalyst powder separation and recovery device specifically includes the following steps:
  • the drive motor 11 Turn on the drive motor 11, and send the flat catalyst 111 into the powder separation unit 1 from the inlet 10 of the separation device.
  • the catalyst single plate is rolled and transported by three sets of counter-rotating rollers 12 and six sets of rollers 13, the powder Separated from the veneer, the veneer leaves the separation device 1 through the separation device outlet 16, and the powder leaves the powder separation unit 1 through the catalyst powder outlet 15 after passing through the powder accumulation bin 14 due to the internal negative pressure of the device.
  • the catalyst powder and air mixture enters the powder recovery unit 2 through the powder recovery inlet 20, passes through the cyclone channel, and enters the primary recovery chamber 30 from the cyclone outlet 21.
  • Large particles of powder are prevented from colliding with the cavity of the recovery device due to the cyclone. Landing, while the air flow rate decreases rapidly, the combined influence of the two forms the first deposition, which lands on the collection bin 42.
  • the mixture passes through the primary filtration 22.
  • the movable sealing piece 23 is in a closed state, so the mixture can only pass through the primary filtration 23, forming a second deposit, which lands in the collection bin. 42 on.
  • the mixture after primary filtration is in the secondary recovery chamber 31, continues to pass through the secondary filtration 24, forms a third deposit, and lands on the movable sealing plate 23.
  • the air after multi-stage filtration leaves the powder through the induced draft fan interface 41 Recycling unit 2.
  • the device in the present invention can quickly separate and recover the metal mesh and powder of the catalyst single plate, which improves the level of catalyst resource utilization, standardizes the wear ratio of the flat catalyst and establishes standardized files, so that the catalyst single plate can be obtained
  • the accurate wear ratio of the plate simultaneously ensures the strength of the sample and the uniformity of the test flow rate distribution, which is of great significance to the management, application and production of catalysts.
  • the present invention is used to test new catalysts and in-service catalysts.
  • the veneer and the powder are completely separated after 9 sets of rollers, and the powder is completely recovered after multi-stage precipitation.
  • the accurate wear ratio is obtained through the weight comparison method, which makes up for the image recognition. It is impossible to identify the lack of wear in the depth direction, effectively reducing measurement errors and improving work efficiency.

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Abstract

一种平板式催化剂粉体分离和回收装置及平板式催化剂磨损比例确定方法，该装置包括粉体分离单元（1）和粉末回收单元（2），粉体分离单元（1）中的对旋式轧辊（12）与轧辊（13）设置在壳体（17）中并间隔布置，粉末积聚仓（14）分别与壳体（17）和催化剂粉末出口（15）连接，粉末回收单元（2）中的粉末回收入口（20）设置在回收壳体（43）的外侧壁上，旋风出口（21）设置在回收壳体（43）的内侧壁上，在粉末回收入口（20）和旋风出口（21）之间设置有旋风通道（25），回收壳体（43）的内侧壁设置有一级过滤（22）和二级过滤（24），一级过滤（22）的中间位置设置有开孔，形成直径上大下小的锥形面。通过对平板式催化剂进行碾压，使平板式催化剂的单板和粉体能够分离彻底，并且通过多级过滤，使粉体沉积后能够有效得到回收，提高了粉体分离和回收的标准化程度，减小了测量误差。

Description

一种平板式催化剂粉体分离和回收装置及磨损比例确定方法 技术领域
本发明属于催化剂分离领域，涉及一种平板式催化剂粉体分离和回收装置及磨损比例确定方法。
 背景技术
SCR烟气催化剂主要分为蜂窝式催化剂和平板式催化剂。平板式催化剂以平板状金属网为基材，经压制、焙烧而成，平板式催化剂因能有效地适应高尘、高砷等恶劣烟气条件，且具有坚固的不锈钢金属网而不会坍塌，在SCR脱硝中得到广泛引用。平板式催化剂的主要活性物质为在金属网上涂覆的催化剂涂层，这是其应用的基础，因此评价平板式催化剂的一个重要指标便是表面涂层的磨损面积，也即磨损比例。DL/T 2090-2020《火电厂烟气脱硝催化剂报废判定导则》规定，当平板式催化剂“单元体或单板磨损裸露面积大于单板面积的10％，该单元体或单板应予以报废，当模块中1/3以上单元体或单板外观达到上述规定，整个模块应予以报废”，因此确定平板式催化剂的磨损比例，对生产和应用具有重要的意义。
平板式催化剂在单板宽度范围内一般具有3～4个折弯，其折弯长度不易测量，同时日常使用中磨损形状不规则，通过常规的测量获得其磨损比例更加困难，给板式催化剂的评估和报废使用带来了不便。因此，需要开发一套可靠且操作方便的装置以及配套的方法，准确评估平板式催化剂的磨损比例。
 发明内容
本发明的目的在于解决现有技术中平板式催化剂具有折弯，通过常规测量会产生较大的误差，对折弯处的磨损无法准确获得，从而降低了催化剂磨损的测试准确度的问题，提供一种平板式催化剂粉体分离和回收装置及磨损比例确定方法。
为达到上述目的，本发明采用以下技术方案予以实现：
一种平板式催化剂粉体分离和回收装置，包括粉体分离单元和粉末回收单元；
所述粉体分离单元包括驱动电机、对旋式轧辊、轧辊、粉末积聚仓、催化剂粉末出口和壳体，对旋式轧辊与轧辊设置在壳体中，驱动电机带动对旋式轧辊工作，对旋式轧辊与轧辊间隔布置，粉末积聚仓的一端与壳体连接，另一端与催化剂粉末出口连接；
所述粉末回收单元包括引风机、粉末回收入口、旋风出口、一级过滤、活动密封片、二级过滤、旋风通道和回收壳体，所述引风机连接在引风机接口上，粉末回收入口设置在回收壳体的外侧壁上，旋风出口设置在回收壳体的内侧壁上，在粉末回收入口和旋风出口之间设置有旋风通道，回收壳体的内侧壁由下到上依次设置有一级过滤和二级过滤，所述二级过滤与回收壳体的截面大小相同，所述一级过滤的中间位置设置有开孔，一级过滤形成直径上大下小的锥形面；
所述催化剂粉末出口与粉末回收入口连接。
本发明的进一步改进在于：
所述一级过滤的中间位置设置有活动密封片。
所述对旋式轧辊设置有三组。
所述三组对旋式轧辊的端面位于同一高度。
所述轧辊设置有六组。
所述三组对旋式轧辊之间具有两个安装空间，每个安装空间内设置三组轧辊。
所述三组对旋式轧辊和六组轧辊的端面为正弦式布置。
所述粉末积聚仓具有梯形的截面。
一种平板式催化剂磨损比例确定方法，采用如前项任一项所述的一种平板式催化剂粉体分离和回收装置，包括以下步骤：
将需检测磨损比例的平板式催化剂单板经过平板式催化剂粉体分离和回收装置后，取出收集的粉末，在58～62℃的烘箱中干燥30min，冷却至室温后，称重记录粉体的质量为M1；
将同规格的新催化剂样品单板经过平板式催化剂粉体分离和回收装置后，取出收集的粉末，在58～62℃的烘箱中干燥30min，冷却至室温后，称重记录粉体的质量为M2；
确定测试单板的磨损比例F为：
与现有技术相比，本发明具有以下有益效果：
本发明中的粉体分离单元能够通过对旋式轧辊和轧辊对平板式催化剂进行碾压，使平板式催化剂的单板和粉体能够分离彻底，并且通过粉末回收单元中的多级过滤，粉体沉积后能够有效得到回收，提高了粉体分离和回收的标准化程度，减小了测量误差。
本发明中磨损比例的确定方法是基于粉体分离和回收装置，通过重量比较的方法获得了准确的磨损比例，弥补了无法获取平板式催化剂折弯处在深度方向上存在磨损的不足，有效的降低了测量误差，提高了工作效率。
 附图说明
为了更清楚的说明本发明实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本发明的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1为本发明的粉体分离单元结构示意图；
图2为本发明粉体分离单元中轧辊布置示意图；
图3为本发明的粉末回收单元结构示意图。
其中：1-粉体分离单元，10-分离装置入口，11-驱动电机，12-对旋式轧辊，13-轧辊，14-粉末积聚仓，15-催化剂粉末出口，16-分离装置出口，17-壳体，111-平板式催化剂，2-粉末回收单元，20-粉末回收入口，21-旋风出口，22-一级过滤，23-活动密封片，24-二级过滤，25-旋风通道，30-一级回收腔，31-二级回收腔，41-引风机接口，42-收集仓，43-回收壳体。
 具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本发明实施例的组件可以以各种不同的配置来布置和设计。
因此，以下对在附图中提供的本发明的实施例的详细描述并非旨在限制要求保护的本发明的范围，而是仅仅表示本发明的选定实施例。基于本发明中的实施例，本领域普通技术人员在没有作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。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。
在本发明实施例的描述中，需要说明的是，若出现术语“上”、“下”、“水平”、“内”等指示的方位或位置关系为基于附图所示的方位或位置关系，或者是该发明产品使用时惯常摆放的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”等仅用于区分描述，而不能理解为指示或暗示相对重要性。
此外，若出现术语“水平”，并不表示要求部件绝对水平，而是可以稍微倾斜。如“水平”仅仅是指其方向相对“竖直”而言更加水平，并不是表示该结构一定要完全水平，而是可以稍微倾斜。
在本发明实施例的描述中，还需要说明的是，除非另有明确的规定和限定，若出现术语“设置”、“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
下面结合附图对本发明做进一步详细描述：
参见图1和图2，为粉体分离单元结构示意图，粉体分离单元1包括驱动电机11、对旋式轧辊12、轧辊13、粉末积聚仓14、催化剂粉末出口15和壳体17，对旋式轧辊12与轧辊13设置在壳体17中，对旋式轧辊12设置有三组，三组对旋式轧辊12的端面位于同一平面上，轧辊13设置有六组，起到碾压和传送的作用，在三组对旋式轧辊12的两个间隔内分别设置三组轧辊13，轧辊的端面呈现正弦式布置，驱动电机11带动处于同于平面的对旋式轧辊12进行对旋式碾压工作，粉末积聚仓14的一端与壳体17连接，另一端与催化剂粉末出口15连接。
参见图3，为粉末回收单元结构示意图，粉末回收单元2包括引风机、粉末回收入口20、旋风出口21、一级过滤22、活动密封片23、二级过滤24、旋风通道25和回收壳体43；引风机连接在引风机接口41上，粉末回收入口20设置在回收壳体43的外壁上，旋风出口21设置在回收壳体43的内侧壁上，在粉末回收入口20和旋风出口21之间设置有旋风通道25，回收壳体43的内侧壁由下到上依次设置有一级过滤22和二级过滤24，所述二级过滤24设置在回收壳体43的截面上，所述一级过滤22的中间位置设置有开孔，一级过滤22形成直径上大下小的锥形面。
在使用时，连接催化剂粉末出口15和粉末回收入口20。根据平板式催化剂粉体分离和回收装置确定平板式催化剂磨损比例的方法，具体包括以下步骤：
工作前，连接催化剂粉末出口15与粉末回收入口20，打开引风机接口41处的引风机，使整个粉体分离和回收装置内部处于负压状态，此时活动密封片23为关闭状态，即位于虚线位置，整个系统密封性良好。
打开驱动电机11，从分离装置入口10处将平板式催化剂111送入粉体分离单元1中，催化剂单板经过三组对旋式轧辊12和六组轧辊13的碾压和传送后，粉体和单板分离，单板由分离装置出口16离开分离装置1，粉体则由于装置的内部负压，经过粉末积聚仓14后，从催化剂粉末出口15离开粉体分离单元1。
随后，催化剂粉末和空气混合物，通过粉末回收入口20进入粉末回收单元2中，经过旋风通道，从旋风出口21进入一级回收腔30中，大颗粒的粉末由于旋风撞击回收装置的腔体避免而降落，同时空气流速迅速降低，两者的综合影响，形成第一次沉积，降落在收集仓42上。
然后，混合物通过一级过滤22，此时由于二级回收腔31内为负压，活动密封片23处于关闭状态，因此混合物只能经过一级过滤23，形成第二次沉积，降落在收集仓42上。
经过一级过滤后的混合物处于二级回收腔31中，继续通过二级过滤24，形成第三次沉积，降落在活动密封片23上，经过多级过滤后的空气经由引风机接口41离开粉末回收单元2。
关闭引风机，二级回收腔31中的负压消失，活动密封片23打开，粉末从活动密封片上下降，沉积在回收装置2的收集仓42上，至此，分离出的粉末全部降落在收集仓42上。
打开收集仓42，取出粉末，在58～62℃的烘箱中干燥30min，冷却至室温后称重，记录为M1。
取相同规格的新催化剂样品单板，重复上述粉体分离和回收流程，取出收集的粉末，在58～62℃的烘箱中干燥30min，冷却至室温后称重，记录为M2。
根据以下公式进行计算，得到测试样品的磨损比例F：
进一步的，为了提高M2的精度，可以取多片新催化剂单板进行测试，需留存测试块单板，取多次测试的平均值，代入公式中计算，作为催化剂磨损档案数据库的重要基础数据留存。
通过本发明中的装置可以快速的对催化剂单板进行金属网和粉体分离及回收，提高了催化剂资源化利用水平，对平板式催化剂磨损比例进行了规范化要求和标准化档案建立，可以获得催化剂单板准确的磨损比例，同时保证了样品的强度和测试流速的分布均匀性，对催化剂的管理、应用和生产具有重要的意义。采用本发明对新催化剂以及在役催化剂进行测试，单板和粉体经过9组轧辊后分离彻底，粉体经过多级沉淀后回收彻底，通过重量比较方法获得准确的磨损比例，弥补了图像识别无法识别出在深度方向存在磨损的不足，有效的降低了测量误差，提高了工作效率。
以上仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (9)

  1. 一种平板式催化剂粉体分离和回收装置，其特征在于，包括粉体分离单元(1)和粉末回收单元(2)；
    所述粉体分离单元(1)包括驱动电机(11)、对旋式轧辊(12)、轧辊(13)、粉末积聚仓(14)、催化剂粉末出口(15)和壳体(17)，对旋式轧辊(12)与轧辊(13)设置在壳体(17)中，驱动电机(11)带动对旋式轧辊(12)工作，对旋式轧辊(12)与轧辊(13)间隔布置，粉末积聚仓(14)的一端与壳体(17)连接，另一端与催化剂粉末出口(15)连接；
    所述粉末回收单元(2)包括引风机、粉末回收入口(20)、旋风出口(21)、一级过滤(22)、活动密封片(23)、二级过滤(24)、旋风通道(25)和回收壳体(43)，所述引风机连接在引风机接口(41)上，粉末回收入口(20)设置在回收壳体(43)的外侧壁上，旋风出口(21)设置在回收壳体(43)的内侧壁上，在粉末回收入口(20)和旋风出口(21)之间设置有旋风通道(25)，回收壳体(43)的内侧壁由下到上依次设置有一级过滤(22)和二级过滤(24)，所述二级过滤(24)与回收壳体(43)的截面大小相同，所述一级过滤(22)的中间位置设置有开孔，一级过滤(22)形成直径上大下小的锥形面；
    所述催化剂粉末出口(15)与粉末回收入口(20)连接。
  2. 如权利要求1所述的一种平板式催化剂粉体分离和回收装置，其特征在于，所述一级过滤(22)的中间位置设置有活动密封片(23)。
  3. 如权利要求1所述的一种平板式催化剂粉体分离和回收装置，其特征在于，所述对旋式轧辊(12)设置有三组。
  4. 如权利要求3所述的一种平板式催化剂粉体分离和回收装置，其特征在于，所述三组对旋式轧辊(12)的端面位于同一高度。
  5. 如权利要求4所述的一种平板式催化剂粉体分离和回收装置，其特征在于，所述轧辊(13)设置有六组。
  6. 如权利要求5所述的一种平板式催化剂粉体分离和回收装置，其特征在于，所述三组对旋式轧辊(12)之间具有两个安装空间，每个安装空间内设置三组轧辊(13)。
  7. 如权利要求6所述的一种平板式催化剂粉体分离和回收装置，其特征在于，所述三组对旋式轧辊(12)和六组轧辊(13)的端面为正弦式布置。
  8. 如权利要求1所述的一种平板式催化剂粉体分离和回收装置，其特征在于，所述粉末积聚仓(14)具有梯形的截面。
  9. 一种平板式催化剂磨损比例确定方法，其特征在于，采用如权利要求1-8任一项所述的一种平板式催化剂粉体分离和回收装置，包括以下步骤：
    将需检测磨损比例的平板式催化剂单板经过平板式催化剂粉体分离和回收装置后，取出收集的粉末，在58～62℃的烘箱中干燥30min，冷却至室温后，称重记录粉体的质量为M1；
    将同规格的新催化剂样品单板经过平板式催化剂粉体分离和回收装置后，取出收集的粉末，在58～62℃的烘箱中干燥30min，冷却至室温后，称重记录粉体的质量为M2；
    确定测试单板的磨损比例F为：
    。
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