CN204395775U

CN204395775U - The moulding body of a kind of inclined orifice plate type denitrating catalyst

Info

Publication number: CN204395775U
Application number: CN201420840425.9U
Authority: CN
Inventors: 孙明辉; 刘继来
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-12-26
Filing date: 2014-12-26
Publication date: 2015-06-17
Anticipated expiration: 2024-12-26

Abstract

The utility model discloses the moulding body of a kind of inclined orifice plate type denitrating catalyst, the dividing plate of inclination is arranged alternately at the roof of square passageway and diapire, and rectangular through-hole is left on dividing plate, at catalyzed gas when advancing along dividing plate incline direction, dividing plate is relatively little to air resistance, and rectangular through-hole can assist to breathe freely.It is more thorough that the moulding body of this catalyst is conducive to that denitration reaction carries out, and gas flow rate is fast, and dust accumulation is few, not easily blocks.

Description

The moulding body of a kind of inclined orifice plate type denitrating catalyst

Technical field

The utility model relates to the structure of the moulding body of catalyst, in particular to a kind of moulding body of inclined orifice plate type denitrating catalyst being obliquely installed apertured partition.

Background technology

Power plant, boiler use coal fuel can produce the various oxides of nitrogen after combustion, if effectively do not processed these oxides, are discharged to the contaminated environment that in air, meeting is serious.Therefore tackle combustion tail gas and carry out denitration process.Current denitration generally adopts selective catalytic reduction (SCR), and the method needs to use denitrating catalyst.Catalyst material is generally made into the moulding body of structure by denitrating catalyst, then makes flue gas carry out catalysis by moulding body.The moulding body of denitrating catalyst is generally cuboid, inner being arranged in order in level and vertical direction by square passageway forms, allow flue gas by square passageway in using, in this process, flue gas contacts with the catalyst material of square passageway sidewall, thus completes denitration catalyst.In order to improve the catalytic performance of catalyst, in square passageway, the structures such as grid, excellent, baffle plate are also set up.As utility model patent 201420281803.4 discloses the moulding body of a kind of Flapper type denitrating catalyst, it is highly half high plate washer of square passageway mid-height that each square passageway surrounding sidewall is interval with.The moulding body of this catalyst and catalyzed gas contacting surface amass large, and time of contact is long, and denitration reaction is comparatively thorough.But in practice, this half high baffle plate makes catalyzed gas residence time long, even creates gas and is detained and dust excessive accumulation, not only make gas Negotiation speed have impact on capacity excessively slowly, and easily square passageway blocks by the too much dust of gathering, cause and cannot continue to use.

Utility model content

The purpose of this utility model is to provide the moulding body of a kind of inclined orifice plate type denitrating catalyst, and the moulding body of this catalyst is while guarantee denitration catalyst reaction effect, and also make gas pass through comparatively fast, do not affect deflation rate and capacity, dust accumulation is few, not easily blocks.

For achieving the above object, the utility model takes following technical scheme:

The moulding body of a kind of inclined orifice plate type denitrating catalyst, comprise the cuboid shell and inner square passage that are made into by denitrating catalyst, square passageway is arranged in order to described cuboid shell in the horizontal and vertical directions, it is characterized in that, on roof in described each square passageway, interval is to having upper catalyst dividing plate, the roof of described upper catalyst dividing plate and square passageway is inclined to 40 ~ 50 degree of angles, leave rectangular through-hole in the center of upper catalyst dividing plate, the area of described upper rectangular through-hole is 1/6 ~ 1/4 of described upper catalyst dividing plate area; On diapire in described each square passageway, interval is upwards provided with lower catalyst dividing plate, the diapire of described lower catalyst dividing plate and square passageway is inclined to 40 ~ 50 degree of angles, leave lower rectangular through-hole in the center of lower catalyst dividing plate, the area of described lower rectangular through-hole is 1/6 ~ 1/4 of described lower catalyst dividing plate area; Described upper catalyst dividing plate and lower catalyst dividing plate are parallel to each other and are arranged alternately, and upper catalyst dividing plate and lower catalyst dividing plate all extend to the half place of described square passageway height.

Preferably, the roof of described upper catalyst dividing plate and described square passageway is inclined to miter angle, and the area of described upper rectangular through-hole is 1/5 of described upper catalyst dividing plate area; The diapire of described lower catalyst dividing plate and described square passageway is inclined to miter angle, and the area of described lower rectangular through-hole is 1/5 of described lower catalyst dividing plate area.

Preferably, the horizontal range of described upper catalyst dividing plate and adjacent lower catalyst dividing plate equals the height of described square passageway.

In technique scheme, the dividing plate of certain tilt angle is arranged alternately at the roof of square passageway and diapire, and on dividing plate, leave the specific through hole of area, make catalyzed gas when advancing along dividing plate incline direction, dividing plate is relatively little at the resistance of the vertically disposed dividing plate of wall to air resistance, and it is ventilative to also have rectangular through-hole to assist, the gas of tilted upward dividing plate to motion can also play mix and blend effect, it is more thorough that these are all conducive to that denitration reaction carries out, and gas flow rate is fast, dust accumulation is few, not easily blocks.

Accompanying drawing explanation

Fig. 1 is the utility model outside drawing;

Fig. 2 is square passageway internal structure schematic perspective view;

Fig. 3 is the main apparent direction schematic diagram of square passageway internal structure.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model is described further:

As shown in Fig. 1 Fig. 2 and Fig. 3, the moulding body 1 of catalyst is all made by denitrating catalyst material, generally first denitrating catalyst material is made pasty state, then through appearance, calcine shaping again and obtain.The moulding body of catalyst has cuboid shell, and inside is arranged in order in the horizontal and vertical directions by square passageway 2, until cuboid shell, defines square passageway array.On roof in each square passageway 2, interval is to having upper catalyst dividing plate 5, and upper catalyst dividing plate 5 becomes 40 ~ 50 degree of angles with roof, preferably 45 degree.This inclined design can not be advanced to catalyzed gas and be produced larger resistance, also would not affect gas flow rate.Rectangular through-hole 6 is left in the center of upper catalyst dividing plate 5, the area of upper rectangular through-hole 6 is 1/6 ~ 1/4 of described upper catalyst dividing plate area, preferably 1/5, upper rectangular through-hole 6 crosses conference makes gas major part flow through from this hole, reduce catalytic effect and the extent of reaction, the too small meeting of upper rectangular through-hole 5 makes gas flow rate slack-off, also can assemble dust.On diapire in each square passageway 2, interval is upwards provided with lower catalyst dividing plate 3, lower catalyst dividing plate 3 is inclined to 40 ~ 50 degree of angles with the diapire of square passageway, preferably 45 degree, lower rectangular through-hole 4 is left in the center of lower catalyst dividing plate 3, the area of lower rectangular through-hole is 1/6 ~ 1/4 of described lower catalyst dividing plate area, preferably 1/5.Upper catalyst dividing plate 5 is parallel to each other with lower catalyst dividing plate 3 and is arranged alternately, and upper catalyst dividing plate 5 equals the height of square passageway 2 with the horizontal range of adjacent lower catalyst dividing plate 3, can make square passageway 2 inner structure specification like this, is convenient to make.Upper catalyst dividing plate 5 and lower catalyst dividing plate 3 all extend to the half place of described square passageway height, can save the consumption of catalyst material like this, also avoid that upper and lower catalyst dividing plate is long causes gas block.

The moulding body of this catalyst is compared with the moulding body of catalyst not arranging half high baffle plate in square passageway, with regard to the catalyst material of identical component, catalytic effect can improve more than 15%, relatively with establish the moulding body of the catalyst of vertical baffle at wall, catalytic effect improves 5%.

The present embodiment just to the utility model design and explanations realizing, is not limited, and under the utility model design, the technical scheme converted without essence is still in protection domain.

Claims

1. the moulding body of inclined orifice plate type denitrating catalyst, comprise the cuboid shell and inner square passage that are made into by denitrating catalyst, square passageway is arranged in order to described cuboid shell in the horizontal and vertical directions, it is characterized in that, on roof in described each square passageway, interval is to having upper catalyst dividing plate, the roof of described upper catalyst dividing plate and square passageway is inclined to 40 ~ 50 degree of angles, leave rectangular through-hole in the center of upper catalyst dividing plate, the area of described upper rectangular through-hole is 1/6 ~ 1/4 of described upper catalyst dividing plate area; On diapire in described each square passageway, interval is upwards provided with lower catalyst dividing plate, the diapire of described lower catalyst dividing plate and square passageway is inclined to 40 ~ 50 degree of angles, leave lower rectangular through-hole in the center of lower catalyst dividing plate, the area of described lower rectangular through-hole is 1/6 ~ 1/4 of described lower catalyst dividing plate area; Described upper catalyst dividing plate and lower catalyst dividing plate are parallel to each other and are arranged alternately, and upper catalyst dividing plate and lower catalyst dividing plate all extend to the half place of described square passageway height.

2. the moulding body of inclined orifice plate type denitrating catalyst as claimed in claim 1, it is characterized in that, the roof of described upper catalyst dividing plate and described square passageway is inclined to miter angle, and the area of described upper rectangular through-hole is 1/5 of described upper catalyst dividing plate area; The diapire of described lower catalyst dividing plate and described square passageway is inclined to miter angle, and the area of described lower rectangular through-hole is 1/5 of described lower catalyst dividing plate area.

3. the moulding body of inclined orifice plate type denitrating catalyst as claimed in claim 1 or 2, it is characterized in that, the horizontal range of described upper catalyst dividing plate and adjacent lower catalyst dividing plate equals the height of described square passageway.