WO2023045421A1 - 一种吸收塔填料的制备方法及填料 - Google Patents

一种吸收塔填料的制备方法及填料 Download PDF

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Publication number
WO2023045421A1
WO2023045421A1 PCT/CN2022/098821 CN2022098821W WO2023045421A1 WO 2023045421 A1 WO2023045421 A1 WO 2023045421A1 CN 2022098821 W CN2022098821 W CN 2022098821W WO 2023045421 A1 WO2023045421 A1 WO 2023045421A1
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Prior art keywords
filler
preparation
absorption tower
shaped structure
printing
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PCT/CN2022/098821
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English (en)
French (fr)
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刘蓉
王焕君
李野
范金航
牛红伟
郭东方
刘练波
Original Assignee
中国华能集团清洁能源技术研究院有限公司
华能国际电力股份有限公司
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Publication of WO2023045421A1 publication Critical patent/WO2023045421A1/zh

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    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/30—Loose or shaped packing elements, e.g. Raschig rings or Berl saddles, for pouring into the apparatus for mass or heat transfer
    • 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
    • B01D53/14—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 absorption
    • B01D53/18—Absorbing units; Liquid distributors therefor
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/30—Details relating to random packing elements
    • B01J2219/302—Basic shape of the elements
    • B01J2219/30296—Other shapes
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/30—Details relating to random packing elements
    • B01J2219/318—Manufacturing aspects

Definitions

  • the application relates to the technical field of absorption tower packing, in particular to a preparation method and packing of absorption tower packing.
  • the packing is the core of the absorption tower, which provides the contact surface of the gas-liquid two phases in the tower, and the structure of the packing and the absorption tower determines the performance of the tower.
  • the filler must have a large specific surface, high porosity, good wettability, corrosion resistance, certain mechanical strength, low density, and low price. In this way, the voids of the packing can have a higher liquid holding capacity, which can make the liquid stay longer in the tower, thereby increasing the contact time of the gas-liquid two phases and improving the mass transfer efficiency of the packing.
  • most of the existing fillers are made by the traditional molding process, which needs to be manufactured with the help of molds. The process is relatively complicated, which is not conducive to improving production efficiency.
  • the technical problem to be solved in this application is that the existing fillers in the prior art are mostly made by traditional molding techniques, which need to be manufactured with the help of molds, and the process is relatively complicated, which is not conducive to improving production efficiency, thereby providing an absorption tower filler Preparation method and filler.
  • the present application provides a method for preparing the packing of the absorption tower, including: setting the parameters of the 3D printing equipment; planning the printing path according to the model slice of the packing; printing the matrix of the packing in sequence according to the path; A special-shaped structure is formed on one of the substrates, which is suitable for increasing the specific surface area and porosity of the filler.
  • sequentially printing the substrates of the filler according to the model design requirements specifically includes: using different powder feeders to feed powder when printing two adjacent layers of substrates of the filler.
  • the laser power range is 400W-1000W; the powder feeding speed range is 1g/min-30g/min; the scanning speed is 5mm/s-12mm/s.
  • the present application also provides a filler, which includes stacked substrates, at least on the outer surface of one of the substrates of the filler is provided with a special-shaped structure, which is suitable for increasing the specific surface area and porosity of the filler.
  • the materials of two adjacent layers of the base body are different.
  • the materials of the same layer of base are different.
  • the material of the base body is metal or plastic.
  • the base body is a solid structure or a hollow structure.
  • the special-shaped structure includes one or more of protrusions with a table-like structure, protrusions with a tooth-like structure, and protrusions with an arc-shaped structure.
  • the preparation method of the absorption tower packing provided by this application adopts 3D printing equipment to manufacture the packing, which can produce the packing with complex shape that is difficult to produce or even impossible to produce by the traditional process, and does not need to use molds, heat treatment and other processes, and the manufacturing speed is fast, which is beneficial Increase productivity.
  • the special-shaped structure printed on the substrate can increase the specific surface area and porosity of the filler, make the gas-liquid contact more fully, and help improve the efficiency of the reaction.
  • Fig. 1 is the flow chart of the preparation method of absorption tower packing in the embodiment of the present application
  • Fig. 2 is the top view of packing in one embodiment of the present application
  • Fig. 3 is the top view of filler in another embodiment of the present application.
  • Fig. 4 is a front view of a filler in an embodiment of the present application.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.
  • Fig. 2 is the top view of packing in one embodiment of the present application
  • Fig. 3 is the top view of packing in another embodiment of the present application
  • Fig. 4 is the front view of packing in one embodiment of the present application
  • Fig. 2, Fig. 3 and Fig. 4 As shown, the present embodiment provides a filler, which includes stacked substrates 1, and at least one layer of the substrate 1 is provided with a special-shaped structure 2 on the outer surface of the filler, which is suitable for increasing the specific surface area and porosity of the filler.
  • the base body 1 can be circular, rectangular, triangular, polygonal or other curved shapes.
  • the matrix 1 is stacked from bottom to top along the thickness direction of the filler.
  • each layer of matrix 1 can be a solid structure or a hollow structure.
  • the outer surface of the substrate 1 may have a special-shaped structure 2, and the special-shaped structure 2 may be a protrusion or a depression.
  • the filler provided in this application is manufactured by 3D printing equipment. Compared with the traditional process, it does not need to use molds, heat treatment and other processes, and the manufacturing speed is fast, which is conducive to improving production efficiency. Moreover, the special-shaped structure 2 formed by printing on the substrate can increase the specific surface area and porosity of the filler, make the gas-liquid contact more fully, and help improve the efficiency of the reaction.
  • the materials of two adjacent layers of the base body 1 are different.
  • two different materials can be used to form different single-layer substrates 1 .
  • the special-shaped structure 2 on the base 1 and the base 1 may be made of the same material or different materials.
  • the materials of the base body 1 of the same layer are different. Affected by the single printing width, sometimes the same layer of substrate 1 needs to be gradually printed from the inside to the outside. With such a setting, the raw materials of the matrix can be flexibly selected and matched according to the needs, which is beneficial to improving its comprehensive performance.
  • the material of the base body 1 is metal or plastic or other materials that are solid at room temperature.
  • the matrix 1 made of metal has a compact, fine and uniform structure, and its performance often exceeds that of castings produced by traditional techniques.
  • the matrix 1 of the metal material can withstand high temperature, and the filler is not easy to crack.
  • the base body 1 made of plastic has certain mechanical strength, low density, strong corrosion resistance and low price.
  • the special-shaped structure 2 includes one or more of protrusions with a table-like structure, protrusions with a tooth-like structure, and protrusions with an arc-shaped structure.
  • Fig. 1 is the flowchart of the preparation method of the absorption tower packing in the embodiment of the present application; As shown in Fig. 1, the present embodiment also provides a kind of preparation method of the absorption tower packing, including: setting each parameter of the 3D printing equipment; according to Slice the model of the filler, and plan the printing path; print the matrix of the filler in sequence according to the path, for example, it can be printed in a bottom-up and inside-out manner; wherein, at least one layer of the filler substrate forms a special-shaped structure , suitable for increasing the specific surface area and porosity of fillers.
  • sequentially printing the matrix of the filler according to the model design requirements specifically includes: using different powder feeders to feed powder when printing two adjacent layers of the matrix of the filler.
  • the laser power range is 400W-1000W; for example, it may be 600W.
  • the powder feeding speed range is 1g/min-30g/min; for example, it can be 15g/min.
  • the scanning speed is 5mm/s-12mm/s, for example, it can be 10mm/s.
  • the preparation method of absorption tower packing uses 3D printing equipment to manufacture packing, which can produce packing with complex shapes that are difficult to produce or even impossible to produce by traditional technology, and does not need to use molds, heat treatment and other processes, and the manufacturing speed is fast , which is conducive to improving production efficiency.
  • the special-shaped structure printed on the substrate can increase the specific surface area and porosity of the filler, make the gas-liquid contact more fully, and help improve the efficiency of the reaction.

Abstract

本申请涉及吸收塔填料技术领域，提供一种吸收塔填料的制备方法及填料，该制备方法包括：对3D打印设备各参数进行设置；根据填料的模型切片，规划打印的路径；按照所述路径依次打印填料的基体；其中，至少在填料的其中一层基体上形成异形结构，适于增大填料的比表面积与空隙率。本申请提供的吸收塔填料的制备方法，采用3D打印设备制造填料，可以生产传统工艺难以生产甚至不能生产的形状复杂的填料，且无需使用模具，无需进行热处理等工艺，制造速度快，有利于提高生产效率。而且，基体上打印形成的异形结构，可以增大填料的比表面积与空隙率，可以使气液接触更充分，有利于提高反应的效率。

Description

一种吸收塔填料的制备方法及填料
相关申请的交叉引用
本申请要求在2021年9月24日提交中国专利局、申请号为202111125738.7、发明名称为“一种吸收塔填料的制备方法及填料”的中国专利申请的优先权，其全部内容通过引用的方式并入本文中。
技术领域
本申请涉及吸收塔填料技术领域，具体涉一种吸收塔填料的制备方法及填料。
背景技术
填料是吸收塔的核心，它提供了塔内气液两相的接触面，填料与吸收塔的结构决定了塔的性能。填料必须具备较大的比表面，有较高的空隙率、良好的润湿性、耐腐蚀、一定的机械强度、密度小、价格低廉等。这样可以使填料的空隙处能有较高的持液量，可使塔内液体的停留时间较长，从而增加了气液两相的接触时间，提高了填料的传质效率。但是，现有的填料多采用传统成型工艺制成，需要借助模具进行制造，工艺较为复杂，不利于提高生产效率。
发明内容
因此，本申请要解决的技术问题在于现有技术中的现有的填料多采用传统成型工艺制成，需要借助模具进行制造，工艺较为复杂，不利于提高生产效率，从而提供一种吸收塔填料的制备方法及填料。
为解决上述技术问题，本申请的技术方案如下：
本申请提供一种吸收塔填料的制备方法，包括：对3D打印设备各参数进 行设置；根据填料的模型切片，规划打印的路径；按照所述路径依次打印填料的基体；其中，至少在填料的其中一层基体上形成异形结构，适于增大填料的比表面积与空隙率。
进一步地，按模型设计需求依次打印填料的基体具体包括：在打印填料的相邻两层基体时采用不同的送粉器进行送粉。
进一步地，对3D打印设备各参数进行设置时；激光功率范围为400W-1000W；送粉速度范围为1g/min-30g/min；扫描速度为5mm/s-12mm/s。
本申请还提供一种填料，包括层叠设置的基体，至少在所述填料的其中一层基体的外表面设置有异形结构，适于增大所述填料的比表面积与空隙率。
进一步地，沿所述基体的轴线方向上，相邻两层基体的材料不同。
进一步地，沿所述基体的径向方向上，同一层基体的材料不同。
进一步地，所述基体的材料为金属或者塑料。
进一步地，所述基体为实心结构或空心结构。
进一步地，所述异形结构包括台状结构的凸起、齿状结构的凸起以及弧形结构的凸起中的一种或多种。
本申请技术方案，具有如下优点：
本申请提供的吸收塔填料的制备方法，采用3D打印设备制造填料，可以生产传统工艺难以生产甚至不能生产的形状复杂的填料，且无需使用模具，无需进行热处理等工艺，制造速度快，有利于提高生产效率。而且，基体上打印形成的异形结构，可以增大填料的比表面积与空隙率，可以使气液接触更充分，有利于提高反应的效率。
附图说明
为了更清楚地说明本申请具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施方式，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的附图。
图1为本申请实施例中吸收塔填料的制备方法的流程图；
图2为本申请一个实施例中填料的俯视图；
图3为本申请又一个实施例中填料的俯视图；
图4为本申请一个实施例中填料的主视图。
附图标记说明：
1、基体；2、异形结构。
具体实施方式
下面将结合附图对本申请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申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，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，都属于本申请保护的范围。
在本申请的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”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，仅是为了便于描述本申请和简化描述，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申请的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“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，可以具体情况理解上述术语在本申请中的具体含义。
此外，下面所描述的本申请不同实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。
图2为本申请一个实施例中填料的俯视图；图3为本申请又一个实施例中填料的俯视图；图4为本申请一个实施例中填料的主视图；如图2、图3以及图4所示，本实施例提供一种填料，包括层叠设置的基体1，至少在填料的其中一层基体1的外表面设置有异形结构2，适于增大填料的比表面积与空隙率。
具体而言，基体1可以为圆形、矩形、三角形、多边形或者其他曲边图形。基体1沿填料的厚度方向，自下而上层叠设置。其中，每层基体1可以为实心结构，也可以为空心结构。其中，基体1的外表面可以均具有异形结构2，异形结构2可以为凸起或者凹陷。
本申请提供的填料，采用3D打印设备制造而成，相比于传统工艺，无需使用模具，无需进行热处理等工艺，制造速度快，有利于提高生产效率。而且，基体上打印形成的异形结构2，可以增大填料的比表面积与空隙率，可以使气液接触更充分，有利于提高反应的效率。
本实施例中，沿基体1的轴线方向上，相邻两层基体1的材料不同。例如，可以采用两种不同材料交底形成不同的单层基体1。其中，基体1上的异形结构2与基体1可以为同一种材料，也可以为不同的材料。
本实施例中，沿基体1的径向方向上，同一层基体1的材料不同。受单次打印宽度的影响，同一层基体1有时候需要自内而外逐渐打印形成。如此设置，可以根据需要灵活的对基体的原材料进行选择搭配，有利于提高其综合性能。
本实施例中，基体1的材料为金属或者塑料或其它常温下呈固体的材料。其中，采用金属制成基体1组织致密、细小且均匀，性能往往超过传统工艺生产的铸件。而且，金属材料的基体1可以承受高温，填料不易裂。其中，采用塑料制成的基体1具备一定的机械强度、密度小、耐腐蚀强以及价格低廉。
本实施例中，异形结构2包括台状结构的凸起、齿状结构的凸起以及弧形结构的凸起中的一种或多种。
图1为本申请实施例中吸收塔填料的制备方法的流程图；如图1所示，本实施例还提供一种吸收塔填料的制备方法，包括：对3D打印设备各参数进行 设置；根据填料的模型切片，规划打印的路径；按照路径依次打印填料的基体，例如，可以按照自下而上、自内而外的方式进行打印；其中，至少在填料的其中一层基体上形成异形结构，适于增大填料的比表面积与空隙率。
本实施例中，按模型设计需求依次打印填料的基体具体包括；在打印填料的相邻两层基体时采用不同的送粉器进行送粉。如此设置，能够实现异种金属粉末的同时打印以及梯度打印，打印的基体具有清晰的梯度界面。
本实施例中，对3D打印设备各参数进行设置时；激光功率范围为400W-1000W；例如，可以为600W。送粉速度范围为1g/min-30g/min；例如，可以为15g/min。扫描速度5mm/s-12mm/s，例如，可以为10mm/s。
综上，本申请提供的吸收塔填料的制备方法，采用3D打印设备制造填料，可以生产传统工艺难以生产甚至不能生产的形状复杂的填料，且无需使用模具，无需进行热处理等工艺，制造速度快，有利于提高生产效率。而且，基体上打印形成的异形结构，可以增大填料的比表面积与空隙率，可以使气液接触更充分，有利于提高反应的效率。
显然，上述实施例仅仅是为清楚地说明所作的举例，而并非对实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引伸出的显而易见的变化或变动仍处于本发明创造的保护范围之中。

Claims (9)

  1. 一种吸收塔填料的制备方法，其特征在于，包括：
    对3D打印设备各参数进行设置；
    根据填料的模型切片，规划打印的路径；
    按照所述路径依次打印填料的基体；其中，至少在填料的其中一层基体上形成异形结构，适于增大填料的比表面积与空隙率。
  2. 根据权利要求1所述的吸收塔填料的制备方法，其特征在于，
    按模型设计需求依次打印填料的基体具体包括：
    在打印填料的相邻两层基体时采用不同的送粉器进行送粉。
  3. 根据权利要求1-2中任一项所述的吸收塔填料的制备方法，其特征在于，
    对3D打印设备各参数进行设置时；
    激光功率范围为400W-1000W；
    送粉速度范围为1g/min-30g/min；
    扫描速度为5mm/s-12mm/s。
  4. 一种填料，其特征在于，包括：
    层叠设置的基体，至少在所述填料的其中一层基体的外表面设置有异形结构，适于增大所述填料的比表面积与空隙率。
  5. 根据权利要求4所述的填料，其特征在于，
    沿所述基体的轴线方向上，相邻两层基体的材料不同。
  6. 根据权利要求4所述的填料，其特征在于，
    沿所述基体的径向方向上，同一层基体的材料不同。
  7. 根据权利要求4所述的填料，其特征在于，
    所述基体的材料为金属或者塑料。
  8. 根据权利要求4-7中任一项所述的填料，其特征在于，
    所述基体为实心结构或空心结构。
  9. 根据权利要求4-7中任一项所述的填料，其特征在于，
    所述异形结构包括台状结构的凸起、齿状结构的凸起以及弧形结构的凸起中的一种或多种。
PCT/CN2022/098821 2021-09-24 2022-06-15 一种吸收塔填料的制备方法及填料 WO2023045421A1 (zh)

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