CN203494296U - Modified activated carbon fiber doped efficient mercury removal filter material - Google Patents

Abstract

The utility model discloses a modified activated carbon fiber doped efficient mercury removal filter material. The efficient mercury removal filter material comprises a dust receiving layer, a base cloth layer and a bottom layer which are connected with one another from outside to inside in sequence, wherein the dust receiving layer, the base cloth layer and the bottom layer are connected with one another by needling; the dust receiving layer and the bottom layer are respectively formed through fiber blending and cross lapping. After the filter material is used for filtration, the dust emission concentration can be reduced below 10mg/Nm<3>, the filter efficiency of PM2.5 is over 95%, the filter efficiency towards mercury and other heavy metals is over 90% and the contents of mercury and other heavy metals in the atmosphere can be obviously reduced.

Description

Mix the high-efficiency mercury removal filtrate of modified active carbon fiber

Technical field

The utility model relates to a kind of environmental protection filtrate, in particular a kind of high-efficiency mercury removal filtrate of mixing modified active carbon fiber.

Background technology

On July 29th, 2011, national environmental protection Bu He State Administration for Quality Supervision and Inspection and Quarantine has issued up-to-date < < fossil-fuel power plant atmospheric pollutant emission standard > >.In < < standard > >, stipulate: from 1 day January in 2012, for the mercury and mercuric compounds of whole boilers, carry out 30mg/Nm³discharge standard.Table 1 is the efficiency comparative result of current several technology demercurations.

ESP COLD is low temperature electrostatic deduster, and ESP HOT is high temperature electrostatic deduster, and W FGD is wet desulfurization of flue gas by limestone-gypsum method system, and bag-type dusting is sack cleaner, and semidry method is semi-dry desulphurization system, and ESP is electrostatic precipitator.

The efficiency of table 1 routine techniques demercuration

Control technology	Average removal rate %	Control technology	Average removal rate %
				ESP?COLD	27	Semidry method+bag-type dusting	28
ESP?COLD+W?FGD	49	ESP?HOT+W?FGD	26
				ESP?HOT	4	Bag-type dusting+W FGD	88
Bag-type dusting	58	Semidry method+ESP	18

As can be seen from Table 1, existing dedusting demercuration technology, effect is all lower, substantially at most also cannot surpass 90%.And generally all relate to plurality of devices, complex structure technical process is many.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of high-efficiency mercury removal filtrate of mixing modified active carbon fiber is provided, and by the change to filter structure, improves demercuration efficiency.

The utility model is achieved through the following technical solutions, the utility model comprise from outside to inside successively connect meet knoisphere, base cloth layer and bottom, described meeting between knoisphere, base cloth layer and bottom adopts acupuncture mutually to link, described in meet knoisphere and bottom and be respectively fiber blend cross lapping and form.

Described knoisphere one or more the fiber blend cross lappings in modified active carbon fiber and polyphenylene sulfide fibre, polyimide fiber, aromatic polyamide fibre, glass fibre of meeting form.

Described base cloth layer is that the braiding of polytetrafluoroethylene (PTFE) long filament forms.

Described bottom is that one or more the fiber blend cross lappings in modified active carbon fiber and polyphenylene sulfide fibre, polyimide fiber, aromatic polyamide fibre, glass fibre form.

Described 150 Ke≤meet Chong Liang≤200 gram of every square metre of knoisphere; Chong Liang≤150 gram that 120 Ke≤base cloth layer is every square metre; Chong Liang≤200 gram that 150 Ke≤bottom is every square metre, filtrate Chong Liang≤550 gram of 420 Ke≤every square metre.

The utility model has the following advantages compared to existing technology: after using the utility model to filter, dust emission concentration is reduced to and reaches 10mg/Nm³below, the filter efficiency of PM2.5 reaches more than 95%, and the filter efficiency of mercury and heavy metal thereof is reached more than 90%, can obviously reduce the content of mercury in atmosphere and heavy metal thereof.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

The specific embodiment

Below embodiment of the present utility model is elaborated; the present embodiment is implemented take technical solutions of the utility model under prerequisite; provided detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.

As shown in Figure 1, the present embodiment comprise from outside to inside successively connect meet knoisphere 1,base cloth layer 2 andbottom 3, described in meet between knoisphere 1,base cloth layer 2 andbottom 3 and adopt acupuncture mutually to link, described in meet knoisphere 1 andbottom 3 and be respectively fiber blend cross lapping and form.

Meeting knoisphere 1 one or more fiber blend cross lappings in modified active carbon fiber and polyphenylene sulfide fibre, polyimide fiber, aromatic polyamide fibre, glass fibre forms.

Base cloth layer 2 forms for polytetrafluoroethylene (PTFE) long filament weaves.

Bottom 3 forms for one or more the fiber blend cross lappings in modified active carbon fiber and polyphenylene sulfide fibre, polyimide fiber, aromatic polyamide fibre, glass fibre.

150 Ke≤meet knoisphere, 1 Chong Liang≤200 gram of every square metre; 120 Ke≤base cloth layer, 2 Chong Liang≤150 gram of every square metre; 150 Ke≤bottom, 3 Chong Liang≤200 gram of every square metre.Control the filtrate weight of every square metre at 420 grams～550 grams, can give full play to like this performance of filtrate.

Claims (5)

1. a high-efficiency mercury removal filtrate of mixing modified active carbon fiber, it is characterized in that, comprise from outside to inside successively connect meet knoisphere (1), base cloth layer (2) and bottom (3), described meeting between knoisphere (1), base cloth layer (2) and bottom (3) adopts acupuncture mutually to link, described in meet knoisphere (1) and bottom (3) and be respectively fiber blend cross lapping and form.

2. the high-efficiency mercury removal filtrate of mixing modified active carbon fiber according to claim 1, it is characterized in that, described in meet knoisphere (1) one or more fiber blend cross lappings in modified active carbon fiber and polyphenylene sulfide fibre, polyimide fiber, aromatic polyamide fibre, glass fibre and form.

3. the high-efficiency mercury removal filtrate of mixing modified active carbon fiber according to claim 1, is characterized in that, described base cloth layer (2) forms for polytetrafluoroethylene (PTFE) long filament weaves.

4. the high-efficiency mercury removal filtrate of mixing modified active carbon fiber according to claim 1, it is characterized in that, described bottom (3) forms for one or more the fiber blend cross lappings in modified active carbon fiber and polyphenylene sulfide fibre, polyimide fiber, aromatic polyamide fibre, glass fibre.

5. the high-efficiency mercury removal filtrate of mixing modified active carbon fiber according to claim 1, is characterized in that, described 150 Ke≤every square metre of Chong Liang≤200 gram of meeting knoisphere (1); Chong Liang≤150 gram of 120 Ke≤every square metre of base cloth layer (2); Chong Liang≤200 gram of 150 Ke≤every square metre of bottom (3), filtrate Chong Liang≤550 gram of 420 Ke≤every square metre.

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