CN107088352A - A kind of device that vapor in coal steam-electric plant smoke is reclaimed based on composite membrane - Google Patents
A kind of device that vapor in coal steam-electric plant smoke is reclaimed based on composite membrane Download PDFInfo
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- CN107088352A CN107088352A CN201710390162.4A CN201710390162A CN107088352A CN 107088352 A CN107088352 A CN 107088352A CN 201710390162 A CN201710390162 A CN 201710390162A CN 107088352 A CN107088352 A CN 107088352A
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- Prior art keywords
- composite membrane
- vapor
- flue gas
- membrane
- electric plant
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- 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
- B01D53/22—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 diffusion
- B01D53/228—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 diffusion characterised by specific membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
The invention discloses a kind of device that vapor in coal steam-electric plant smoke is reclaimed based on composite membrane, belong to thermal power industry water saving, the content of energy-saving field.Membrane module uses suitable-adverse current combined layout scheme in device for reclaiming moisture, and reduction flue gas washes away to composite membrane, resistance of the reduction device to flowing flue gas；And devise the membrane module accessory of special construction so that it is in integrally hourglass shape arrangement to install after membrane module is installed, and can effectively mitigate the fouling membrane that the impact of high velocity air is produced with dust stratification.Verified through small test, for the air of middle low speeds flow, the Pressure drop factor of device is between 3 15.For 60 DEG C of the wet nitrogen of saturation of low speeds flow, the membrane area filling rate of device is 80m2/m3When, the infiltration coefficient of composite membrane is up to 0.4 0.8 kg/ (m3H), the moisture rate of recovery is up to 50 60%.
Description
Technical field
The invention belongs to thermal power industry water saving, field of energy-saving technology, a kind of special composite membrane component structure is designed,
The service life of membrane module is effectively improved, the stable recovery of vapor in coal steam-electric plant smoke is realized.
Background technology
2014, China increased 103,500,000 kilowatts of generating equipment capacity newly, and generating equipment total capacity reaches 13.6 hundred million kilowatts；
Fired power generating unit installed capacity breaks through 9 hundreds of millions kilowatts, accounts for 67% of total installation of generating capacity or so, it is seen that thermal power generation is in power industry
Still larger specific gravity is occupied.There is statistics to show, China's thermoelectricity water consumption account for always the 40% of national power industry water consumption with
On, and this ratio increasing year by year.Although there is larger fresh water deposit in China, economical develops rapidly and water resource
The unbalanced of distribution causes central and west regions to face serious water resources shortage problem.Meanwhile, central and west regions are that China is important
Fossil energy deposit area, the present situation of rich coal poor-water seriously limits the further hair of central and west regions thermal power industry
Exhibition.
The technology of separation removal vapor has many kinds from moisture-containing airflow, and relatively common at present has condenser recycle-water
Technology, desiccant dehydration technology, and embrane method moisture recovery technology.Data shows, is reclaimed available for moisture in power-plant flue gas
Technology has liquid absorption method, condensation method and embrane method.Wherein, the liquid absorption method feature of environmental protection is poor, economy is low；Condensation method reclaims moisture
Water quality it is poor, aftertreatment technology requires high；Embrane method flue gas moisture recovery technology not only has simple system, reclaims water quality height etc.
Advantage, can also realize the recovery of vapor heat, with preferable prospect.
The smoke components of thermal power plant are complex, the coal-burning power plant for using Coal rank, smoke components difference also compared with
Greatly, for the more swiftly flowing flue gas of ash content, embrane method device for reclaiming moisture is also easy to produce dust stratification and strength problem.Therefore, originally
Invention elaborates a kind of device that vapor in coal steam-electric plant smoke is reclaimed based on composite membrane, and its special arrangement and design can be with
It is effectively prevented from two kinds of above-mentioned problems.In addition, the compound embrane method device for reclaiming moisture that the present invention is illustrated easily realizes standardization system
Make and installed with modularization.
The content of the invention
The purpose of the present invention is illustrated in a kind of device that vapor in coal steam-electric plant smoke is reclaimed based on composite membrane, the device
The particular design of membrane module can be effectively prevented from the dust stratification on film surface, improve service life；Meanwhile, its special arrangement can
So that the flow resistance of film device is greatly lowered, blower fan power consumption is reduced, the economy of thermal power plant's operation is improved.
In order to avoid swiftly flowing flue gas washes away to the vertical of composite membrane and produces larger impulsive force, influence film it is strong
Degree and service life, devise a kind of special apparatus module, device arranges totally 16 groups of membrane modules by 4 rows 4 and constituted, wherein each film
Component is made up of one group of film silk and two fixing end accessories.Every group of film silk is made up of 20 film silks.Film silk is to be based on polyether sulfone
（PES）The hollow fiber film structure of material, the sulfonated polyether-ether-ketone of coated 40% sulfonation degree of doughnut film outer surface
（SPEEK）After be made, the film of such a material is extremely strong to the adsorption capacity of water.Device is by membrane module along flow of flue gas direction cloth
Put, arrangement is suitable-adverse current combined layout.Device front half section vapor is identical with flow of flue gas direction, belongs to following current cloth
Put；Second half section vapor is in opposite direction with flow of flue gas, belongs to counter-flow arrangement.This arrangement is not only it is possible to prevente effectively from cigarette
Gas washes away to composite membrane silk, strengthens the service life of film, can also be effectively reduced the flow resistance of device, reduces station-service
Electricity；And flue gas and film surface time of contact are longer, osmotic effect is preferable；The structure of special membrane module accessory is designed in addition, is wrapped
Include fixing end accessory and connection end accessory so that suitable-adverse current combined layout is in integrally hourglass shape.This hourglass shape structure can be protected
Flue gas is demonstrate,proved when flowing through film surface, film silk produces continuous slight vibrations due to having certain angle with flue gas flow direction, this vibrations
Flue dust can be prevented effectively from film silk to gather, it is to avoid fouling membrane.The design not only increases the recovering effect of vapor, even more has
The dust stratification of membrane module is avoided to effect, increases the service life of membrane module, the stable recovery of vapor in flue gas is realized.
Beneficial effects of the present invention：The invention can effectively reduce flue gas and flow through the pressure loss produced by film device,
And reduce flue gas composite membrane silk is washed away, strengthen the life-span of film and the stability of system.Verified through small test, it is low in
The air of speed flowing, the Pressure drop factor of device is between 3-15.For 60 DEG C of the wet nitrogen of saturation of low speeds flow, device is filled out
Rate is filled for 80m2/m3When, the permeation flux of composite membrane is up to 0.4-0.8kg/ (m3H), the moisture rate of recovery is up to 50-60%.And should
The water quality that method is reclaimed is higher, in industrial fresh water category.Term is introduced：Pressure drop factor is the pressure reduction that flue gas flows through device
The ratio between pressure reduction values, dimensionless caused by on-way resistance when value is with without device；The filling rate of device is having for being filled in device
Imitate the ratio between volume of membrane area and device, unit：m2/m3。
Brief description of the drawings
Fig. 1 is the overall schematic of vapor retracting device.
Fig. 2 is membrane module structure schematic diagram.
Fig. 3 is suitable-adverse current combined layout schematic diagram.
Fig. 4 is the fixing end accessory structure figure of membrane module.
Fig. 5 is the connection end accessory structure figure of membrane module.
Fig. 6 is that membrane module hourglass shape arranges schematic diagram.
Embodiment
The present invention devises a kind of device that coal steam-electric plant smoke is reclaimed based on composite membrane, it is therefore an objective to realize in coal steam-electric plant smoke
The recovery of vapor, reduction thermal power plant water consume, saving water resource lifts the economy of thermal power unit operation.
The composition of device mainly includes hollow-fibre membrane composite membrane silk（1）, the fixing end accessory of membrane module（2）, membrane module
Connection end accessory（3）, vapor transport tube（4）.
When device works, flue gas is along hollow-fibre membrane composite membrane silk（1）Outer surface is flowed, and vapor permeation enters composite membrane
Inner side, passes through the connection end accessory of membrane module（3）Vapor is transported to vapor transport tube（4）It is interior, then transported by vapor
Pipe（4）The vapor that numerous membrane modules are reclaimed is transported to related system.
The recovery of vapor can make up the loss of steam and water everywhere of power plant, particularly be weighed for Midwest Fu Mei water-deficient areas
Will.Preferably, through experimental verification in laboratory, its water reclaimed belongs to industrial fresh water category to the water quality that compound embrane method is reclaimed, rear place
Science and engineering skill is simple, and processing system energy consumption is smaller.After simple process, in that context it may be convenient to import in condensate in system, carry out again sharp
With.
The recovery of vapor can reduce the acid dew-point temperature of flue gas, mitigate the low-temperature corrosion of heated surface at the end of boiler.From
The heat of the vapor reclaimed in high-temperature flue can also carry out certain utilization, reach the purpose of energy-conservation.For using wet method
The unit of desulfurization, flue gas after desulfurization is substantially at wet saturation state, easily causes the corrosion of chimney.To the flue gas after wet desulphurization
Vapor recovery is carried out, substantial amounts of high-quality water can be not only reclaimed, the corrosion of chimney can also be effectively prevented, reduction chimney is prevented
The economic pressures of rotten measure.
Claims (4)
1. a kind of device that vapor in coal steam-electric plant smoke is reclaimed based on composite membrane, it is characterised in that：Devise a kind of special knot
Composite membrane component arranges that flue gas flows outside composite membrane, in flue gas along flow of flue gas direction in the composite membrane device of structure, device
Vapor permeation enter on the inside of composite membrane, and conveyed by vapor transport tube.
2. a kind of device that vapor in coal steam-electric plant smoke is reclaimed based on composite membrane according to claim 1, its feature
It is：Described composite membrane device arrangement is that composite membrane component is down current arrangement, vapor before vapor transport tube
It is counter-flow arrangement, generally suitable-adverse current combined layout after transport tube.
3. a kind of device that vapor in coal steam-electric plant smoke is reclaimed based on composite membrane according to claim 1, its feature
It is：The fixing end accessory of described composite membrane component, its fixing end radial dimension is more than the radial dimension of connection end；So that dress
It is in hourglass shape to put overall, and hourglass shape structure can ensure flue gas when flowing through film silk table face, and film silk with flue gas flow direction due to having necessarily
Angle and produce continuous slight vibrations, this vibrations avoids flue dust from gathering on film silk.
4. a kind of device that vapor in coal steam-electric plant smoke is reclaimed based on composite membrane according to claim 1, its feature
It is：Composite membrane is made after applying the sulfonated polyether-ether-ketone of 40% sulfonation degree for doughnut film outer surface in described film silk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710390162.4A CN107088352A (en) | 2017-05-27 | 2017-05-27 | A kind of device that vapor in coal steam-electric plant smoke is reclaimed based on composite membrane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710390162.4A CN107088352A (en) | 2017-05-27 | 2017-05-27 | A kind of device that vapor in coal steam-electric plant smoke is reclaimed based on composite membrane |
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| CN107088352A true CN107088352A (en) | 2017-08-25 |
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| CN201710390162.4A Pending CN107088352A (en) | 2017-05-27 | 2017-05-27 | A kind of device that vapor in coal steam-electric plant smoke is reclaimed based on composite membrane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110394056A (en) * | 2019-08-30 | 2019-11-01 | 华能国际电力股份有限公司 | A kind of Industrial Boiler flue gas dehumidifying system for desulfuration and denitration and method |
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| CN101293701A (en) * | 2008-05-27 | 2008-10-29 | 大连理工大学 | Trapezia flat-plate membrane component for strengthening pollution resistant function of aeration in membrane bioreactor |
| CN201529494U (en) * | 2009-07-27 | 2010-07-21 | 上海生物医学工程研究中心 | Submerged flat membrane component |
| CN104349832A (en) * | 2012-04-13 | 2015-02-11 | 韩国能源技术研究院 | System for treating combustion exhaust gases comprising moisture recovery device using separation membrane |
| CN105013354A (en) * | 2014-04-30 | 2015-11-04 | 华北电力大学 | Composite membrane used for gathering water vapor in smoke of thermal power plant and preparation method thereof |
| CN105478015A (en) * | 2015-03-18 | 2016-04-13 | 华北电力大学 | Composite membrane assembly used for capturing water in flue gas and manufacture method thereof |
| CN106512668A (en) * | 2016-12-14 | 2017-03-22 | 华北电力大学 | Device and method for recovering moisture and waste heat of flue gas on basis of hollow ceramic membranes |
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2017
- 2017-05-27 CN CN201710390162.4A patent/CN107088352A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101293701A (en) * | 2008-05-27 | 2008-10-29 | 大连理工大学 | Trapezia flat-plate membrane component for strengthening pollution resistant function of aeration in membrane bioreactor |
| CN201529494U (en) * | 2009-07-27 | 2010-07-21 | 上海生物医学工程研究中心 | Submerged flat membrane component |
| CN104349832A (en) * | 2012-04-13 | 2015-02-11 | 韩国能源技术研究院 | System for treating combustion exhaust gases comprising moisture recovery device using separation membrane |
| CN105013354A (en) * | 2014-04-30 | 2015-11-04 | 华北电力大学 | Composite membrane used for gathering water vapor in smoke of thermal power plant and preparation method thereof |
| CN105478015A (en) * | 2015-03-18 | 2016-04-13 | 华北电力大学 | Composite membrane assembly used for capturing water in flue gas and manufacture method thereof |
| CN106512668A (en) * | 2016-12-14 | 2017-03-22 | 华北电力大学 | Device and method for recovering moisture and waste heat of flue gas on basis of hollow ceramic membranes |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110394056A (en) * | 2019-08-30 | 2019-11-01 | 华能国际电力股份有限公司 | A kind of Industrial Boiler flue gas dehumidifying system for desulfuration and denitration and method |
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| PB01 | Publication | ||
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Application publication date: 20170825 |