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Fused deposition modeling 3D printing mercury removal bag cage and preparation method thereof

A fused deposition modeling, 3D printing technology, applied in separation methods, chemical instruments and methods, 3D object support structures, etc., can solve problems such as poor mercury removal efficiency

Active Publication Date: 2021-03-19
XIAN THERMAL POWER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a fused deposition molding 3D printing mercury removal bag cage and its preparation method; The problem of poor efficiency

Method used

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  • Fused deposition modeling 3D printing mercury removal bag cage and preparation method thereof
  • Fused deposition modeling 3D printing mercury removal bag cage and preparation method thereof
  • Fused deposition modeling 3D printing mercury removal bag cage and preparation method thereof

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preparation example Construction

[0034] A preparation method for fused deposition modeling 3D printing mercury removal bag cage, comprising the following steps:

[0035](1) In parts by mass, 25 to 50 parts of mercury removal catalytic powder, 10 to 25 parts of polytetrafluoroethylene powder, 8 to 15 parts of polyimide powder, 3 to 10 parts of nano silicon dioxide, 1 to After mixing 5 parts of paraffin wax and 0.5-1 part of silicon carbide powder, perform ball milling to obtain material A, then add 9-20 parts of kerosene to material A, seal it, stir and mix evenly at room temperature, and obtain material B after aging for 30-36 hours , Material B is pre-extruded at 1.5-2.5MPa for 6-10 minutes and then extruded to obtain a rod-shaped material. After the rod-shaped material is calendered into a belt, the filament and filament for 3D printing equipment are prepared by using the film splitting process. The diameter of the section is 1.1-1.3mm; the size of the polytetrafluoroethylene powder is 500nm-50μm, and the s...

Embodiment 1

[0041] After mixing 2kg of mercury removal catalytic powder, 0.9kg of polytetrafluoroethylene powder, 0.5kg of polyimide powder, 0.3kg of nano silicon dioxide, 0.1kg of silicon carbide, and 0.05kg of paraffin wax, they were placed on a planetary ball mill for ball milling. The speed of the ball mill is 220r / min, every 20min is a round, and the grinding is 5 rounds, that is, the ball milling time is 100min, and the material A is obtained, and then 0.45kg of kerosene is added to the material A, and after sealing, stir and mix evenly at room temperature, and age for 30h Finally, the material B is obtained, and the material B is pre-extruded at 2Mpa for 10 minutes and then extruded to obtain a rod-shaped material. After the rod-shaped material is calendered into a belt, a filament with a diameter of 1.2mm is prepared by a film splitting process; it is created by using Solidworks software The 3D model of the bag cage is created above, and the overall size is: the ring interface diam...

Embodiment 2

[0045] Mix 2.5kg mercury removal catalyst powder, 0.7kg polytetrafluoroethylene powder, 0.4kg polyimide powder, 0.2kg nano-silicon dioxide, 0.15kg silicon carbide, and 0.07kg paraffin wax, then place it on a planetary ball mill for ball milling , the speed of the ball mill is 220r / min, every 20min is a round, grinding 5 rounds, that is, the ball milling time is 100min, to obtain material A, then add 0.5kg kerosene to the material A, stir and mix evenly at room temperature after sealing, aging After 32 hours, the material B was obtained. The material B was pre-extruded at 2Mpa for 10 minutes and then extruded to obtain a rod-shaped material. After the rod-shaped material was calendered into a belt, a filament with a diameter of 1.2mm was prepared by using the film splitting process; using Solidworks software Create a 3D model of the bag cage on creation, the overall size is: the ring interface diameter is 145mm, the thickness is 5mm, the bottom diameter is 110mm, the bag cage le...

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Abstract

The invention discloses a fused deposition modeling 3D printing mercury removal bag cage and a preparation method thereof. The preparation method includes the steps that mercury removal catalytic powder is prepared firstly, and then the mercury removal catalytic powder, polytetrafluoroethylene powder, polyimide powder, nano silicon dioxide, paraffin and silicon carbide powder are mixed to preparefilamentous materials to be used as 3D printing raw materials; the mercury removal bag cage is prepared from the 3D printing raw materials through a fused deposition modeling technology. Compared withthe combination of a conventional bag cage and a mercury removal filter bag, the mercury removal bag cage has the advantages that a catalyst is implanted into the mercury removal bag cage through rawmaterial blending in the preparation process of the bag cage, so that the catalyst is uniformly distributed in the bag cage, the catalytic stability of the whole bag cage is good, and the mercury removal efficiency is high.

Description

【Technical field】 [0001] The invention belongs to the technical field of coal-fired flue gas purification, and relates to a fused deposition molding 3D printed mercury removal bag cage and a preparation method thereof. 【Background technique】 [0002] In recent years, mercury removal from coal-fired flue gas has received extensive attention. Now the binding target for the emission concentration of mercury is: (50ug / m 3 / GB13271-2014,8ug / m 3 / DB50 / 659-2016,30ug / m 3 / DB31 / 387-2017,8ug / m 3 / DB31 / 860-2014). SCR mercury removal is the use of SCR catalysts to remove the difficult-to-remove elemental mercury (Hg 0 ) is catalyzed and oxidized to easy-to-trap ion mercury (Hg 2+ ), and then use the existing pollutant control equipment (dust collector and desulfurization tower) to remove ionized mercury, so as to achieve flue gas demercury removal. Compared with the activated carbon injection method that has been applied in foreign coal-fired boilers, this method has low mercury ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D22/00B29C64/118B01D53/86C08L27/18C08L79/08C08K3/36B33Y10/00B33Y70/10B33Y80/00B29L31/14
CPCB29D22/00B29C64/118B01D53/8665C08L27/18B33Y70/10B33Y10/00B33Y80/00B01D2257/602B29L2031/14C08L79/08C08K3/36
Inventor 杨嵩郭中旭程广文刘茜姚明宇赵瀚辰付康丽杨成龙蔡铭
Owner XIAN THERMAL POWER RES INST CO LTD
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