CN215198670U

CN215198670U - Regeneration pretreatment ash removal device for deactivated SCR (Selective catalytic reduction) catalyst

Info

Publication number: CN215198670U
Application number: CN202120585407.0U
Authority: CN
Inventors: 张玮; 罗春广; 张世平
Original assignee: Inner Mongolia Centure Environmental Technology Co ltd
Current assignee: Inner Mongolia Centure Environmental Technology Co ltd
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2021-12-17
Anticipated expiration: 2031-03-23

Abstract

The utility model discloses an inactivation SCR catalyst regeneration preliminary treatment ash removal device, feeder hopper including dust removal chamber and one side upper portion setting, the opposite side of dust removal chamber is opened there is the discharge gate, be provided with a plurality of mobile stay tubes of arranging downwards to the discharge gate slope by the feeder hopper in the dust removal chamber, the discharge gate passes through the chute and links up fixedly at the collecting box of dust removal chamber one side with the setting, dust removal chamber side lower part intercommunication is fixed with the negative-pressure tube, install axial fan on the negative-pressure tube, the utility model has the advantages of being simple in structure, the simple operation, to the rolling SCR catalyst surface dust adsorption treatment of the mobile stay tube through the slope more clean, efficiency improves greatly, establishes better basis for the old and useless SCR catalyst of follow-up processing.

Description

Regeneration pretreatment ash removal device for deactivated SCR (Selective catalytic reduction) catalyst

Technical Field

The utility model relates to a water treatment catalyst treatment field, concretely relates to deactivation SCR catalyst regeneration preliminary treatment ash removal device.

Background

With the increasing severity of NOx emission, the control of nitrogen oxide (NOx) emission in China is more and more strict, and a Selective Catalytic Reduction (SCR) denitration technology is widely applied to a denitration system of a coal-fired power plant due to high-efficiency and reliable denitration performance. Most of catalyst modules of the SCR denitration system adopt a high-dust arrangement scheme, the denitration performance of the catalyst is reduced after the catalyst is operated for a period of time, and the catalyst is inactivated for a plurality of reasons, so that the influence of the operation condition is existed, such as the damage of dust and temperature fluctuation in flue gas to the macroscopic structure of the catalyst, and the influence of various toxic and harmful chemical components in the flue gas is also existed, wherein the poisoning effect of arsenic element, alkali metal, alkaline earth metal and metal oxide is most obvious. These factors make the service life of the SCR denitration catalyst only 2-3 years, and the initial investment of the catalyst accounts for 40% -60% of the total investment of the SCR denitration system, so that the catalyst becomes an expensive consumable. In addition, the deactivated SCR catalyst will cause extremely strong poisoning effect to human body and environment if not properly disposed. If the deactivated catalyst is subjected to regeneration treatment, the service cycle of the SCR catalyst can be effectively prolonged, and the economic cost and the toxic action are reduced. Therefore, the regeneration of the SCR denitration catalyst is significant.

The SCR catalyst mainly passes through steps such as preliminary treatment, high pressure spray, pickling, tympanic bulla rinsing in regeneration process, need to carry out dust removal processing to the SCR catalyst in the preliminary treatment process, and dust removal is an important ring in the catalyst regeneration process, and dust removal technology adopts industrial dust catcher to remove dust, and this kind of dust removal mode can't effectively clear away the catalyst surface deposition ash to the inefficiency influences the effect of follow-up SCR catalyst processing.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem of the existence, the utility model provides an inactivation SCR catalyst regeneration preliminary treatment ash removal device.

The utility model discloses a realize through following technical scheme:

the utility model provides an inactivation SCR catalyst regeneration preliminary treatment ash removal device, includes the feeder hopper that dust removal chamber and one side upper portion set up, the opposite side of dust removal chamber is opened there is the discharge gate, be provided with a plurality ofly by the feeder hopper to the mobile stay tube that the discharge gate slope was arranged downwards in the dust removal chamber, the discharge gate passes through the chute and links up fixedly with the collecting box that sets up in dust removal chamber one side, dust removal chamber side lower part intercommunication is fixed with the negative-pressure tube, install axial fan on the negative-pressure tube.

Preferably, a connection port of the negative pressure pipe and the dust chamber is arranged at the lower part of the flow support pipe.

Preferably, the distance between adjacent flow support pipes is 1mm-3 mm.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of being simple in structure and simple in operation, it is more clean to adsorb the processing through the rolling SCR catalyst surface dust of the mobile stay tube of slope, and efficiency improves greatly, establishes better basis for the old and useless SCR catalyst of follow-up processing.

Drawings

Fig. 1 is a schematic perspective sectional view of the structure of the present invention;

FIG. 2 is a schematic view of another state of the present invention;

in the figure: the device comprises a dust removal chamber 1, a flow support pipe 2, a feed hopper 3, a discharge port 4, a chute 5, a collection box 6, a negative pressure pipe 7 and an axial flow fan 8.

Detailed Description

The invention will be described in further detail with reference to the following detailed description and accompanying drawings:

as shown in fig. 1 and 2, an inactivation SCR catalyst regeneration preliminary treatment ash removal device, feeder hopper 3 including dust removal chamber 1 and one side upper portion setting thereof, the opposite side of dust removal chamber 1 is opened there is discharge gate 4, be provided with a plurality of mobile stay tubes 2 of arranging downwards by feeder hopper 3 to discharge gate 4 slope in the dust removal chamber 1, discharge gate 4 passes through chute 5 and sets up collection box 6 linking fixed in dust removal chamber 1 one side, 1 side lower part intercommunication in dust removal chamber is fixed with negative-pressure tube 7, install axial fan 8 on the negative-pressure tube 7.

And a connecting port of the negative pressure pipe 7 and the dust chamber 1 is arranged at the lower part of the flow support pipe 2.

The distance between the adjacent flow support pipes 2 is 1mm-3 mm.

The working principle is as follows: when the utility model is used, the waste SCR catalyst is lifted and poured into the feed hopper 3 and falls on the upper parts of the plurality of flow supporting tubes 2 in the dust chamber 1, the waste SCR catalyst rolls from a high position to a low position discharge port 4 on the inclined flow supporting tubes 2, and during the rolling period, larger impurities in the waste SCR catalyst can leak out through a 1-3mm gap between the flow supporting tubes 2 and fall on the lower part of the dust chamber 1, thus realizing the preliminary treatment of coarse impurities;

start axial fan 8 simultaneously, axial fan 8 makes the dust removal chamber 1 lower part of front end produce the negative pressure through negative pressure pipe 7, will adsorb through the dust on the old and useless SCR catalyst surface on the stay tube 2 that flows, carry the sack cleaner to handle, old and useless SCR catalyst rolls at the mobile stay tube 2 of slope, produce vibration under the adsorption, the surface dust is handled more totally, the efficiency improves greatly, establish better basis for the old and useless SCR catalyst of follow-up processing, the old and useless SCR catalyst after the processing falls finally to get into collection box 6 and collect in chute 5 through discharge gate 4, prepare to carry out processing on next step.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an inactivation SCR catalyst regeneration preliminary treatment ash removal device which characterized in that: feeder hopper (3) including clean room (1) and one side upper portion setting thereof, open the opposite side of clean room (1) has discharge gate (4), be provided with a plurality of mobile stay tubes (2) of arranging downwards by feeder hopper (3) to discharge gate (4) slope in clean room (1), discharge gate (4) link up fixedly through chute (5) and collecting box (6) that set up in clean room (1) one side, clean room (1) side lower part intercommunication is fixed with negative pressure pipe (7), install axial fan (8) on negative pressure pipe (7).

2. The ash removal device for regeneration pretreatment of the deactivated SCR catalyst according to claim 1, wherein: and a connecting port of the negative pressure pipe (7) and the dust removal chamber (1) is arranged at the lower part of the flow support pipe (2).

3. The ash removal device for regeneration pretreatment of the deactivated SCR catalyst according to claim 1, wherein: the distance between the adjacent flow supporting pipes (2) is 1mm-3 mm.