CN205517659U

CN205517659U - Rotatable SCR catalytic device and system

Info

Publication number: CN205517659U
Application number: CN201620203292.3U
Authority: CN
Inventors: 张宝春; 马国民; 张卫; 张玉新
Original assignee: Tianjin Bohai Sea Fossilisation Co Ltd
Current assignee: Tianjin Bohai Petrochemical Co., Ltd.
Priority date: 2016-03-16
Filing date: 2016-03-16
Publication date: 2016-08-31
Anticipated expiration: 2026-03-16

Abstract

The utility model relates to a rotatable SCR catalytic device and system. The utility model discloses the square catalytic device of SCR that will fix originally improves the spherical device for rotating, if positive SCR catalyst surface blocks debris through long -term the use, the pressure differential grow that leads to the SCR catalyst, can be with a set of SCR catalyst modular system wherein through the upset, become the front into the back, become the back into the front, chimney the inside behind the form of application system blowback blows to catalyst surface's booty, the pressure of system and the pressure differential of SCR catalyst bed have been reduced on the one hand, the poor increase of SCR catalyst bed lamination also can prevent on the one hand in addition because causing chain parking.

Description

A kind of rotatable SCR catalyst device and system

Technical field

This utility model relates to a kind of SCR catalyst device, particularly relates to a kind of rotatable SCR catalysis Agent Apparatus and system.

Background technology

Owing to country is increasingly stricter, so each enterprise is also to the discharge of enterprise's oxynitride at present All begin to use SCR catalyst to reduce concentration and the total amount of oxynitride, but due to current SCR catalyst bed is all fixing, so because installing the secondary body problem that SCR catalyst bed brings Also get more and more.

After SCR catalyst is installed, increase the pressure before SCR catalyst bed, through long-time fortune OK, the pressure of SCR catalyst bed is increased owing to front surface increases foreign material, once SCR catalyst Pressure increases, and will deteriorate the turbulent flow condition of flue gas before SCR catalyst, the end product of deterioration It is the corrosion resistant plate within destruction, and blows out the heat-preservation cotton of inside, be finally attached to SCR catalyst table Face, causes pressure reduction the highest and causes equipment interlocking to stop, and the inside corrosion resistant plate peeled off what is more can fly Above following harp tubulation, causing rupturing of follow-up system tubulation, once high steam is from tubulation Coming up in the inside, steam can cut off the tubulation on side one by one, until furnace wall is revealed, seriously Injure the personal safety of field personnel.Secondly another one aspect, the once heat-preservation cotton of furnace wall Blowout, the carbon steel sheet outside furnace wall also can be overheated, the most overheated deformation that will also result in carbon steel sheet And rupture, also entail dangers to is to the safety of on-the-spot work people personnel.

The design of existing SCR catalyst bed mainly has a following feature:

1, square manufactures and designs；

2, fixed installation；

3, one side air inlet one side is given vent to anger；

4, the booty being attached on surface cannot Hand scarf；

5, the solution after blocking, parking labor cleaning；

6, the on-line continuous operation time is short；

7, the application of positive and negative cannot be realized.

Summary of the invention

The purpose of this utility model is: provide a kind of turning, can the SCR of rotation of two-sided use Catalyst-assembly and system.

For realizing the purpose of this utility model, it is achieved by the following technical solutions: a kind of rotatable SCR catalyst device, including seal box, rotary shaft, SCR catalyst, described SCR catalyst Being arranged in described seal box, described SCR catalyst is spherical structure, and described SCR catalyst is fixed In described rotary shaft, described rotary shaft extends transversely through described seal box, and described SCR catalyst is with institute Can overturn in described seal box centered by stating rotary shaft (2).

Preferably, described seal box is cube structure, before and after described seal box relative to two sides Running through the first through hole, described SCR catalyst is positioned at described first through hole.

Further technical scheme, described SCR catalyst is provided with cellular second through hole, and described second Through hole is identical with described first through hole direction.

Preferably, the diameter of described circular hole and the equal diameters of described catalyst, described circular hole is with described Catalyst is matched in clearance.

Further technical scheme, the quantity of described seal box is N number of, N >=2；Described SCR is catalyzed The quantity of agent is N number of, N >=2；Described seal box and described SCR catalyst quantity is equal and one a pair Should, multiple described seal boxs and multiple described SCR catalyst can be installed on same described rotation simultaneously On axle.

A kind of SCR catalyst system comprising rotatable SCR catalyst device, multiple described can revolve SCR catalyst device one the SCR catalyst module of composition turned, in described SCR catalyst module A piece rotation line shaft of the most integrally welded formula of head and the tail of all of rotary shaft.

Preferably technical scheme, also includes that safety pin and gear-box, one end of described rotation line shaft are offered Having the pin-and-hole suitable with described safety pin, described safety pin can be inserted in described pin-and-hole, described rotation Line shaft is connected with described gear-box, and described gear-box can transfer torque to described rotation line shaft and rotate.

Compared with prior art, the beneficial effects of the utility model are, this utility model will be consolidated originally The square catalyst-assembly of fixed SCR is improved to rotatable spherical device, if the SCR catalysis in front Foreign material are blocked on agent surface by long-term use, cause the pressure reduction of SCR catalyst to become big, can be by one of which SCR catalyst passes through rotary system, front is become the back side, the back side becomes front, and application system is anti- The booty of catalyst surface is blown to inside the chimney of back by the form blown, and on the one hand reduces system Pressure and the pressure reduction of SCR catalyst bed, still further aspect also can prevent because of SCR catalyst bed The increase of lamination difference causes chain parking.

Rotary-type SCR catalyst device and the relative merit of system structure design:

1, spherical designs；

2, can choose to install according to the requirement of pressure reduction；

3, front and back can increase service life by rotating mutually conversion；

4, the booty being attached on surface can be cleared up by the form of online blowback；

5, can be by rotating Hand scarf after blocking, it is not necessary to stop；

6, on-line continuous long operational time；

7, flue gas turbulence effect before SCR catalyst system is reduced；

8, destruction or the peeling phenomenon of internal corrosion resistant plate before SCR catalyst system are reduced.

Accompanying drawing explanation

Fig. 1 illustrates the assembly relation of seal box, rotary shaft and SCR catalyst；

The A direction view of Fig. 2 schematic diagram 1；

Fig. 3 illustrates the overall structure of SCR catalyst module；

Fig. 4 illustrates the structure of a whole set of SCR catalyst system.

Wherein: 1, seal box；2, rotary shaft；3, SCR catalyst；4, the first through hole；5, second Through hole；6, safety pin；7, gear-box；8, SCR catalyst module；9, line shaft is rotated.

Detailed description of the invention

Below by embodiment, in conjunction with accompanying drawing 1 and accompanying drawing 4, the technical solution of the utility model is done further Illustrate.

Core of the present utility model is to provide a kind of rotatable SCR catalyst device, the SCR of this rotation Catalyst-assembly front and back can increase service life by rotating mutually conversion.

Embodiment, a kind of rotatable SCR catalyst device, including: seal box 1, rotary shaft 2, SCR Catalyst 3, described SCR catalyst 3 is arranged in described seal box 1, and described SCR catalyst 3 is spherical Structure, described SCR catalyst 3 is fixed in described rotary shaft 2, and described rotary shaft 2 extends transversely through described Seal box 1, described SCR catalyst 3 can overturn centered by described rotary shaft 2 in described seal box 1.

Concrete, as depicted in figs. 1 and 2, SCR catalyst 3 is positioned at seal box 1, and rotary shaft 2 is laterally passed through Wearing seal box 1 and SCR catalyst 3, SCR catalyst 3 is fixed with rotary shaft 2, can be realized SCR catalyst 3 At seal box 1 varus conversion surface centered by rotary shaft 2.

Further, seal box 1 profile is designed as square, and runs through in seal box 1 and offer first Through hole 4, the diameter of the first through hole 4 and SCR catalyst 3 be matched in clearance, can realize SCR catalyst 3 and Between seal box 1, matching distance is more accurate；By the second through hole 5 and side of the first through hole 4 of SCR catalyst 3 Identical to being designed as, and SCR catalyst 3 is designed as spherical, it is possible to achieve SCR catalyst 3 overturns not Being hindered by square corner angle, upset is got up more convenient.

Another core of the present utility model is to provide and a kind of includes above-mentioned rotatable SCR catalyst device SCR catalyst system.

Concrete, as shown in Figure 3 and Figure 4, multiple rotatable SCR catalyst device form one group of SCR Catalyst module 8, many group a whole set of SCR catalyst systems of SCR catalyst module 8 stacking composition.

When the pressure reduction of SCR catalyst occurs that height is reported to the police when, it is possible to achieve scene and two kinds of master control Pattern carries out rotating one group of SCR catalyst module 8.

The first pattern: first opening and be positioned at the safety pin 6 rotated on line shaft 9, quick manual is by gear Case 7 revolves turnback, and gear-box 7 is rotated line shaft 9 and rotates, and rotates line shaft 9 and drives one group of SCR Catalyst module 8 overturns, and is closed by safety pin 6 after having overturn, and checks on-the-spot SCR differential pressure indicator Reading, the SCR catalyst module 8 starting next group after 5 minutes by the time overturns.

SCR catalyst system can be overturn by uniform pressure to solve SCR catalyst bed Time, need to be according to order operation upset middle behind first both sides: first rotate No. A, rotate No. K, rotation F Number, rotate No. E, rotate No. C, rotate No. H, rotate No. J, rotate No. B, rotate No. D, Rotate No. G；The most first overturn the SCR catalyst bed in two outsides, then rotate two inner sides SCR catalyst bed, the rest may be inferred, symmetrical upset.

The second pattern: master control rotates SCR catalyst module automatically.

Starting SCR auto-programming button, SCR catalyst automatic rotating system just starts automatically to detect SCR Pressure system, when SCR catalyst pressure reduction reaches high warning when, system just sends rotation order also Perform following action:

--select and automatically perform to rotate No. 1 SCR catalyst module command

--open the safe pin of A catalyst；

--rotate A catalyst module 180 degree；

--limit switch is sent out block and has been revolved turnback；

--close safe pin；

A SCR catalyst module above just starts according to above-mentioned manual mode after having rotated Order performs identical program successively, until all of SCR catalyst module 8 has overturn, continues The pressure reduction of detection SCR, when SCR pressure reduction height is reported to the police when, repeats and identical automatically runs journey Sequence action, if carrying out upset purging from A to J successively, can cause air-flow bias current, to whole waste heat boiler The operation of stove and the formation of turbulent flow all can have a certain impact.

This utility model is not limited to above-mentioned preferred forms, and those of ordinary skill in the art are in this practicality Other various forms of products all can be drawn, no matter but making in its shape or structure under novel enlightenment Any change, every have same as the present application or akin technical scheme, all falls within this practicality new Within the protection domain of type.

Claims

1. a rotatable SCR catalyst device, including: seal box (1), rotary shaft (2), SCR catalyst (3), it is characterized in that: described SCR catalyst (3) is arranged in described seal box (1), described SCR catalyst (3) is spherical structure, described SCR catalyst (3) is fixed in described rotary shaft (2), described rotary shaft (2) extends transversely through described seal box (1), and described SCR catalyst (3) can overturn centered by described rotary shaft (2) in described seal box (1).

The rotatable SCR catalyst device of one the most according to claim 1, it is characterized in that: described seal box (1) is cube structure, described seal box (1) runs through offers the first through hole (4), described first through hole (4) is vertical with described rotary shaft (2), and described SCR catalyst (3) is positioned at described first through hole (4).

The rotatable SCR catalyst device of one the most according to claim 2, it is characterized in that: described SCR catalyst (3) is provided with cellular second through hole (5), described second through hole (5) is identical with described first through hole (4) direction.

The rotatable SCR catalyst device of one the most according to claim 2, it is characterized in that: the diameter of described first through hole (4) and the equal diameters of described SCR catalyst (3), described first through hole (4) and described SCR catalyst (3) are matched in clearance.

The rotatable SCR catalyst device of one the most according to claim 1, it is characterised in that: the quantity of described seal box (1) is N number of, N >=2；The quantity of described SCR catalyst (3) is N number of, N >=2；Described seal box (1) is equal with described SCR catalyst (3) quantity and one_to_one corresponding.

6. according to the arbitrary described rotatable SCR catalyst device of claim 1-5, it is characterized in that: multiple described rotatable SCR catalyst device form one group of SCR catalyst module (8), rotation line shaft (9) of the most integrally welded formula of head and the tail of all of rotary shaft (2) in described SCR catalyst module (8).

7. the SCR catalyst system comprising rotatable SCR catalyst device in claim 6, it is characterized in that: also include safety pin (6) and gear-box (7), one end of described rotation line shaft (9) offers the pin-and-hole suitable with described safety pin (6), described safety pin (6) can be inserted in described pin-and-hole, described rotation line shaft (9) is connected with described gear-box (7), and described gear-box (7) can transfer torque to described rotation line shaft (9) and rotate.