CN105478015A - Composite membrane assembly used for capturing water in flue gas and manufacture method thereof - Google Patents
Composite membrane assembly used for capturing water in flue gas and manufacture method thereof Download PDFInfo
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- CN105478015A CN105478015A CN201510116265.2A CN201510116265A CN105478015A CN 105478015 A CN105478015 A CN 105478015A CN 201510116265 A CN201510116265 A CN 201510116265A CN 105478015 A CN105478015 A CN 105478015A
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- hollow fiber
- fiber film
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- film assembly
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Abstract
The invention discloses a composite membrane assembly used for capturing water in flue gas and a manufacture method thereof, and belongs to the technical field of thermal power plant energy-saving technologies, and the membrane assembly is capable of reducing boiler heat loss due to exhaust gas and improving boiler thermal efficiency. The hollow fiber composite membrane assembly (8) comprises a plurality of hollow fiber membrane filaments (4) and sealing fixing parts used for sealing and fixing two end parts of the hollow fiber membrane assembly (8). Each sealing fixing part comprises a top fixing screw (1), a top fixing component (3), a bottom fixing component (5), a sealing gasket (6) and a bottom fixing nut (7). The hollow fiber membrane assembly (8) can be mounted on and dismounted from a flue wall (2). The composite membrane assembly is applicable to capture water in evacuated smoke by a thermal power plant, is convenient to install and large in membrane filling area, is capable of bearing certain smoke impact, helps to obtain high-purity water and also effectively mitigate flue channel corrosion and atmosphere pollution.
Description
Technical field
The present invention be more particularly directed to a kind of composite membrane component for trapping flue gas moisture, and for making this hollow fiber composite membrane assembly method, being particularly useful for making the membrane module for trapping steam in heat-engine plant desulfurized rear smoke evacuation, belonging to thermal power plant field of energy-saving technology.
Background technology
Thermal power plant is power generation rich and influential family, is also power consumption, water consumption rich and influential family simultaneously.Statistics shows, by the end of the year 2013, China's generating total installation of generating capacity will reach 12.5 hundred million kilowatts, and leap to the first in the world first, wherein thermoelectricity 8.63 hundred million kilowatts, accounts for 69.04% of total installed capacity of electricity capacity; The total amount about 2.8 × 10 of China's water resource
4billion cubic meter, occupy the 6th, the world, but occupancy volume per person is only world occupancy volume per person's about 30%; The application of water resource comprises the aspects such as agricultural, industry and life, and wherein industrial water consumption accounts for 22% of water resource total flow, and thermal power plant is one of water for industrial use rich and influential family, and its water consumption accounts for more than 40% of industrial total water consumption, and increases year by year.Therefore, the recycling of water resource is very important.At present, researcher has been found that in power plant boiler smoke evacuation contains a large amount of steam, and for certain 300MW unit, its exhaust gas volumn reaches 1.01 × 10
6m
3/ h, in flue gas, the volume fraction of steam reaches 10%, if can recycle 20% of flue gas moisture, it is self-sustaining that this unit will realize moisturizing, if can recycle 40%, this unit can also provide a certain amount of water for the external world.
At present, thermal power plant's exhaust gas temperature is generally between 110-120 DEG C, if exhaust gas temperature is below acid dew-point temperature, boiler low-temperature heating surface and back-end ductwork corrosion can be caused, therefore exhaust gas temperature remains high always, the existence of smoke evacuation moisture had both caused the waste of water resource, caused again larger heat loss due to exhaust gas.In recent years, begin one's study both at home and abroad and can recycle the technology of power plant's smoke evacuation moisture, such as, utilize heat exchanger to carry out condensation and trap flue gas moisture, but the moisture water quality of its trapping is poor, even may have severe corrosive; Utilize the water quality of desiccant dehumidification technology trapping flue gas moisture bad equally, and drier can not recycle; And utilize hollow fiber composite membrane to trap flue gas moisture technology not only can to obtain highly purified water, and have that floor space is little, less energy consumption, non-secondary pollution and simple operation and other advantages, but commercialization experience unripe at present.
Composite membrane has unique good characteristic, be widely used in natural gas, air dehumidification, Chinese scholars has carried out a large amount of theoretical researches and experimental exploring in Penetration Signature in composite membrane of the preparation technology of composite membrane, steam and each parameter in impact of water vapor absorption process etc.In order to trap flue gas moisture, this research preferentially adopts hydrophilic composite film, because hydrone has higher infiltration rate than other gas molecules in hydrophilic film, need only apply certain driving force in the both sides of film, just can realize being separated of moisture and other gases.In recent years, although existing scholar proposes many patents about making membrane module method, still systematic research is lacked for hollow fiber composite membrane assembly trapping flue gas moisture and preparation method thereof.This composite membrane component not only may be used for steam in the actual flue gas of capturing power plant, can also improve and catch water collection efficiency, and ensure that certain intensity is to resist smoke-shock power while the larger composite membrane area of guarantee.
Summary of the invention
The object of the invention is to proposition a kind of for composite membrane component trapping flue gas moisture and preparation method thereof, thus solve problems of the prior art and defect.
The present invention adopts following two kinds technical schemes.
For trapping a composite membrane component for flue gas moisture, comprise some hollow fiber film threads and the seal holder part part for two ends sealing fixing hollow fiber film assembly.Described seal holder part part comprises top fixed screw, top fixed part, bottom fixed part, gasket seal, bottom hold-down nut.Described hollow-fibre membrane tread assembly has first end and the second end, hollow fiber film assembly first end casting glue is sealed in the installing component of top, hollow fiber film assembly second end and bottom fixed part casting glue are tightly connected, and second bottom portion every root film silk perforate forms described hollow fiber film thread inner passage.This hollow fiber film assembly can be assemblied in described walling of flue and can pull down.Top fixed screw is assemblied in the outer upper of walling of flue with fixing and sealed hollow fiber film component first end.Gasket seal and bottom hold-down nut are assemblied in the outer lower portion of walling of flue with fixing hollow fiber film assembly second end.Casting glue is selected can keep sealing characteristics for a long time under the working environment of 170 DEG C, can resist SO
2deng two component embedding silicon rubber KE-1204 of the corrosion of sour gas.
A kind of preparation method of the composite membrane component for trapping flue gas moisture, carry out according to the following steps: 1) hollow fiber film assembly first end raw material band identical for some length is twined, and by the end-grain cutting of all hollow fiber film assemblies second together to needs length and the perforate of hollow fiber film thread bottom, composition hollow fiber membrane bundle; 2) casting glue is configured in a reservoir, put into syringe stand-by, the suitable thin paper sheet of size is put into after being inverted by top installing component, again hollow fiber film assembly first end is vertically put into top installing component, then casting glue is slowly injected top installing component and hollow fiber film assembly first end is tightly connected; 3) after casting glue solidification, hollow fiber film assembly second end is neatly penetrated bottom fixed part, bottom slowly being injected by casting glue, installing component and hollow fiber film assembly second end are tightly connected again, then excise hollow fiber film assembly second bottom portion redundance, every root hollow fiber film assembly second end bottom opening is communicated with outside atmosphere; 4) after casting glue solidification, with top fixed screw, hollow fiber membrane bundle upper end is connected with walling of flue, with bottom hold-down nut, hollow fiber membrane bundle lower end is connected with walling of flue with gasket seal, obtained hollow fiber film assembly.Described raw material band selects high temperature resistant, corrosion-resistant, avirulent teflin tape.Described thin paper sheet selects the scraps of paper that are suitable with top installing component internal orifice dimension, that can prevent from casting glue from flowing into screw resulting in blockage.Described syringe selects 20 milliliters, the injector for medical purpose of plastic needle cylinder.
The invention has the beneficial effects as follows: the present invention may be used for steam in trapping flue gas, not only can obtain highly purified water, boiler flue corrosion and atmosphere pollution can also be alleviated to a certain extent, can exhaust gas temperature be reduced again simultaneously, reduce heat loss due to exhaust gas, improve boiler thermal output.
Accompanying drawing explanation
Fig. 1 is the structure chart of hollow fiber composite membrane assembly at flue
Fig. 2 is hollow fiber composite membrane assembly first end section of structure
Fig. 3 is hollow fiber composite membrane assembly second end structure profile.
Claims (10)
1. for trapping a composite membrane component for flue gas moisture, it is characterized in that, comprising hollow fiber film assembly, this hollow fiber film assembly has some hollow fiber film threads and for sealing the seal holder part part fixing these assembly two ends; Described seal holder part part comprises top fixed screw, top fixed part, bottom fixed part, gasket seal, bottom hold-down nut.
2. hollow fiber composite membrane assembly as claimed in claim 1, it is characterized in that, described hollow-fibre membrane tread assembly has first end and the second end, hollow fiber film assembly first end casting glue is sealed in the installing component of top, hollow fiber film assembly second end and bottom fixed part casting glue are tightly connected, and second bottom portion every root film silk perforate forms described hollow fiber film thread inner passage.
3. hollow fiber composite membrane assembly as claimed in claim 1, it is characterized in that, described hollow fiber film assembly can be assemblied in described walling of flue and pull down from described walling of flue.
4. hollow fiber composite membrane assembly as claimed in claim 1, is characterized in that, described top fixed screw is assemblied in the outer upper of described walling of flue with fixing and sealed hollow fiber film component first end.
5. hollow fiber composite membrane assembly as claimed in claim 1, it is characterized in that, described gasket seal and bottom hold-down nut are assemblied in the outer lower portion of described walling of flue with fixing hollow fiber film assembly second end.
6. hollow fiber composite membrane assembly as claimed in claim 2, it is characterized in that, its casting glue adopted selects two component embedding silicon rubber KE-1204 that can keep sealing characteristics for a long time under the working environment of 170 DEG C, can resist the corrosion of the sour gas such as SO2.
7., for trapping a preparation method for the composite membrane component of flue gas moisture, it is characterized in that carrying out according to the following steps:
1) hollow fiber film assembly first end raw material band identical for some length is twined, and by the end-grain cutting of all hollow fiber film assemblies second together to needs length and hollow fiber film thread perforate, composition hollow fiber membrane bundle;
2) casting glue is configured in a reservoir, put into syringe stand-by, the suitable thin paper sheet of size is put into after being inverted by top installing component, again hollow fiber film assembly first end is vertically put into top installing component, then casting glue is slowly injected top installing component and hollow fiber film assembly first end is tightly connected;
3) after casting glue solidification, hollow fiber film assembly second end is neatly penetrated bottom fixed part, bottom slowly being injected by casting glue, installing component and hollow fiber film assembly second end are tightly connected again, then excise hollow fiber film assembly second bottom portion redundance, the second end every root film silk bottom opening is communicated with outside atmosphere;
4) after casting glue solidification, with top fixed screw, hollow fiber film assembly first end is connected with walling of flue, with bottom hold-down nut, hollow fiber film assembly second end is connected with walling of flue with gasket seal, obtained hollow fiber film assembly.
8. method as claimed in claim 2, it is characterized in that, its raw material band adopted selects high temperature resistant, corrosion-resistant, avirulent teflin tape.
9. method as claimed in claim 2, is characterized in that, the thin paper sheet that it adopts selects the scraps of paper that are suitable with top installing component internal orifice dimension, that can prevent from casting glue from flowing into screw resulting in blockage.
10. method as claimed in claim 2, is characterized in that, described syringe selects 20 milliliters, the injector for medical purpose of plastic needle cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510116265.2A CN105478015A (en) | 2015-03-18 | 2015-03-18 | Composite membrane assembly used for capturing water in flue gas and manufacture method thereof |
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| CN201510116265.2A CN105478015A (en) | 2015-03-18 | 2015-03-18 | Composite membrane assembly used for capturing water in flue gas and manufacture method thereof |
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| CN105478015A true CN105478015A (en) | 2016-04-13 |
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| CN201510116265.2A Pending CN105478015A (en) | 2015-03-18 | 2015-03-18 | Composite membrane assembly used for capturing water in flue gas and manufacture method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107088352A (en) * | 2017-05-27 | 2017-08-25 | 华北电力大学 | A kind of device that vapor in coal steam-electric plant smoke is reclaimed based on composite membrane |
| CN107884440A (en) * | 2017-11-28 | 2018-04-06 | 上海清如环保科技有限公司 | A kind of flue gas dew point detection means |
| CN108554055A (en) * | 2018-02-09 | 2018-09-21 | 江苏大学镇江流体工程装备技术研究院 | A kind of film device for vapor separation |
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| US20100224548A1 (en) * | 2005-09-30 | 2010-09-09 | Yasuhiro Tada | Screen-Like Object Made of Hollow Fibers, a Method of Manufacturing a Hollow Fiber Bundle, a Cylindrical Module of Hollow Fiber Membrane, and an Immersion Type Module of Hollow Fiber Membrane |
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| CN103657421A (en) * | 2012-09-18 | 2014-03-26 | 新奥科技发展有限公司 | Making method of hollow fiber separating membrane assembly |
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| US20100224548A1 (en) * | 2005-09-30 | 2010-09-09 | Yasuhiro Tada | Screen-Like Object Made of Hollow Fibers, a Method of Manufacturing a Hollow Fiber Bundle, a Cylindrical Module of Hollow Fiber Membrane, and an Immersion Type Module of Hollow Fiber Membrane |
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| CN103463942A (en) * | 2013-09-10 | 2013-12-25 | 华北电力大学 | Device and method for gathering water vapor in exhaust gas based on hollow fiber membrane |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107088352A (en) * | 2017-05-27 | 2017-08-25 | 华北电力大学 | A kind of device that vapor in coal steam-electric plant smoke is reclaimed based on composite membrane |
| CN107884440A (en) * | 2017-11-28 | 2018-04-06 | 上海清如环保科技有限公司 | A kind of flue gas dew point detection means |
| CN108554055A (en) * | 2018-02-09 | 2018-09-21 | 江苏大学镇江流体工程装备技术研究院 | A kind of film device for vapor separation |
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Application publication date: 20160413 |