CN203899455U - Needle bar type denitration catalyst shaping body - Google Patents

Abstract

The utility model discloses a needle bar type denitration catalyst shaping body which comprises a rectangular parallelepiped-shaped housing and internal square channels, which are made of a denitration catalyst, wherein the square channels are sequentially arranged to the rectangular parallelepiped-shaped housing in the horizontal and vertical directions; needle bar body assemblies are arranged on the inner walls of the periphery of each square channel in the length direction of the square channel; the needle bar bodies in each needle bar body assembly are distributed on the same cross section of the corresponding square channel; the tail ends of the needle bar bodies on the two adjacent inner walls of each square channel are intersected. The contact surface area of the catalyst shaping body and the catalyzed gas is large, the contact time is long and the catalytic effect is good.

Description

The moulding body of a kind of needle bar type denitrating catalyst

Technical field

The utility model relates to the structure of the moulding body of catalyst, in particular to the moulding body of a kind of needle bar type denitrating catalyst.

Background technology

Power plant, boiler use coal fuel after burning, can produce the various oxides of nitrogen, if these oxides are not effectively processed, are discharged to the serious contaminated environment of meeting in air.Therefore tackle combustion tail gas and carry out denitration processing.Denitration at present generally adopts selective catalytic reduction (SCR), and the method need to be used denitrating catalyst.Denitrating catalyst is generally made into catalyst material the moulding body of structure, then makes flue gas carry out catalysis by moulding body.The moulding body of existing denitrating catalyst is generally rectangle, inner be arranged in order and form at level and vertical direction by square passageway, in use, allow flue gas pass through square passageway, in this process, flue gas contacts with the catalyst material of square passageway sidewall, thereby completes denitration catalyst.But the moulding body of the catalyst of this structure is because catalyst material exists only in the sidewall of square passageway, surface area is relatively little, and square passageway inside does not have other structures to stop flue gas, flue gas footpath is straight through the speed of square passageway, relatively short time of contact with catalyst material, the moulding body of this structure makes catalytic effect poor.

utility model content

The purpose of this utility model is to provide the moulding body of a kind of needle bar type denitrating catalyst, and the moulding body of this catalyst and catalyzed gas contact surface area are large, and time of contact is long, excellent catalytic effect.

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

The moulding body of a kind of needle bar type denitrating catalyst, comprise the cuboid shell and the inner square passage that are made into by denitrating catalyst, it is characterized in that, described square passageway is arranged in order in the horizontal and vertical directions to described cuboid shell, on the surrounding inwall of each square passageway, be interval with needle bar body group along the length direction of square passageway, needle bar body in each needle bar body group is distributed on the same cross section of square passageway, and needle bar body end on adjacent two inwalls of square passageway intersects.

Preferably, described each needle bar body group is equipped with seven needle bar bodies on every side inwall of square passageway, and the cross section that the 4th needle bar body on four side inwalls intersects at the square passageway at the Bing Jiang place, center of square passageway is divided into four new squares, and all the other needle bar body ends intersect respectively in each new square.

Further preferred, in described square passageway, the width that the distance of adjacent two needle bar body groups is square passageway.

In technique scheme, in square passageway, the needle bar body of being made by catalyst material is set up at interval, not only can increase the contact surface area of catalyst material and reactant, and can rationally stop the speed that reactant gas advances, increase and catalyst time of contact, the effect that can make reactant gas be uniformly mixed in the middle generation of advancing, carries out reaction more thorough simultaneously.Needle bar type intersects the square suitable size that has determined needle bar body of formation, in the situation that increasing same catalyst surface area, reduce the consumption of catalyst as far as possible, cost-saving, raise the efficiency, distance between adjacent two needle bar groups is identical with the width of square passageway, more can fully coordinate the opposition between spatial accommodation and contact area, keep well balanced, make catalytic effect performance to best.

Brief description of the drawings

Fig. 1 is the utility model outside drawing;

Fig. 2 is square passageway cross-sectional configuration schematic diagram;

Fig. 3 is square passageway internal structure schematic perspective view.

Detailed description of the invention

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

As shown in drawings, the moulding body 17 of catalyst is all made by denitrating catalyst material, generally first denitrating catalyst material is made to pasty state, then through appearance, calcine moulding and obtain again.The moulding body of catalyst has cuboid shell, and inside is arranged in order in the horizontal and vertical directions by square passageway 16, until cuboid shell has formed square passageway array.In each square passageway 16, be arranged at intervals with along its length some needle bar type body groups 18.Needle bar body group 18 is made up of multiple needle bar bodies that are attached on square passageway surrounding inwall, and the needle bar body in each needle bar body group is on the same cross section of square passageway, and needle bar body end close on adjacent two sidewalls intersects, as shown in Figure 2.A needle bar body part on left side wall is crossing with upper side wall, and a part is crossing with lower wall, generally has seven needle bar bodies on each sidewall, and wherein the 4th extends square passageway center and intersect together.For example, needle bar body 1 is crossing with needle bar body 12 ends, and needle bar body 2 is crossing with needle bar body 13 ends, needle bar body 3 is crossing with needle bar body 14 ends, needle bar body 4 is crossing with needle bar body 15 ends, simultaneously also crossing with needle bar body 11, needle bar body 19, thereby cross section is divided into four new squares.Needle bar body 5 is crossing with needle bar body 10 ends, and needle bar body 6 is crossing with needle bar body 9, and needle bar body 7 is crossing with needle bar body 8.On right side wall, situation is corresponding identical with on left side wall.For the two contradiction of the spatial accommodation of effective coordination square passageway 1 interior gas and needle bar type catch volume, the distance of general adjacent two needle bar body groups 18 equals the width of square passageway.The moulding body internal structure of this catalyst adopts staggered being connected of needle bar body that length is different, can extend the moulding body of reacting gas and catalyst time of contact, also can increase the surface area that the moulding body of catalyst contacts with gas simultaneously, can also make the gas middle generation of advancing be uniformly mixed, be conducive to the carrying out of reaction and completely.With regard to the catalyst material of identical component, catalytic effect can improve more than 9%.

The present embodiment is an explanation to the utility model design and realization just, is not limited, and under the utility model design, the technical scheme converting without essence is still in protection domain.

Claims (3)

1. the moulding body of needle bar type denitrating catalyst, comprise the cuboid shell and the inner square passage that are made into by denitrating catalyst, it is characterized in that, described square passageway is arranged in order in the horizontal and vertical directions to described cuboid shell, on the surrounding inwall of each square passageway, be interval with needle bar body group along the length direction of square passageway, needle bar body in each needle bar body group is distributed on the same cross section of square passageway, and needle bar body end on adjacent two inwalls of square passageway intersects.

2. the moulding body of needle bar type denitrating catalyst as claimed in claim 1, it is characterized in that, described each needle bar body group is equipped with seven needle bar bodies on every side inwall of square passageway, and the cross section that the 4th needle bar body on four side inwalls intersects at the square passageway at the Bing Jiang place, center of square passageway is divided into four new squares, and all the other needle bar body ends intersect respectively in each new square.

3. the moulding body of needle bar type denitrating catalyst as claimed in claim 1 or 2, is characterized in that, in described square passageway, and the width that the distance of adjacent two needle bar body groups is square passageway.