Fixed soot blowing pipe structure for SCR (selective catalytic reduction) denitration catalyst of carbon pot-type furnace

Abstract

The utility model discloses a carbon pot-type furnace SCR denitration catalyst fixed soot blowing pipe structure which comprises a furnace shell, a heat preservation layer is arranged in the furnace shell, a high-pressure air pump is fixedly connected to the outer wall of the furnace shell, an air outlet of the high-pressure air pump is connected with the top of a flow dividing pipe through a pipeline, a calcining furnace is arranged in the heat preservation layer, and the calcining furnace is fixedly connected with the heat preservation layer. An annular opening is formed in the top of the calcining furnace; a soot blowing assembly is arranged on the top side of the calcining furnace; the ash blowing assembly comprises a protection box inserted into the annular opening of the calcining furnace, the annular opening of the calcining furnace is higher than the protection box, the section view of the protection box is of a right-angle U-shaped structure, the outer wall of the protection box is fixedly connected with a flow dividing pipe, the outer wall of the flow dividing pipe is provided with a nozzle, the protection box and the calcining furnace form sliding connection, and the top end of the flow dividing pipe is connected with a high-pressure air pump. According to the device, automatic cleaning of the calcining furnace is achieved, meanwhile, the flow dividing pipes and the spray heads can be stored, and therefore the service life of the flow dividing pipes and the spray heads is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to SCR denitration catalyst preparation technical field, concretely is a kind of carbon tank type furnace SCR denitration catalyst fixed soot blowing pipe structure. BACKGROUND

[0002] SCR denitration catalyst refers to the catalyst used in the process of flue gas denitration, in the field such as thermal power plant, industrial boiler, flue gas generated by combustion contains nitrogen oxides (NOx), these substances can cause air pollution;Carbon tank type furnace is a kind of high-temperature furnace for carbon material processing, mainly used for sintering, heat treatment and other processes of carbon products.

[0003] SCR denitration catalyst preparation process will use carbon tank type furnace for heat treatment, to change the physical or chemical properties of catalyst, improve its activity and stability, and the existing carbon tank type furnace in the process of using the calcination chamber inner wall of carbon tank type furnace can produce certain ash, need to be cleaned regularly, the existing cleaning method is manual cleaning efficiency is low and there is cleaning uneven phenomenon, thus needs to be improved. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of carbon tank type furnace SCR denitration catalyst fixed soot blowing pipe structure, to solve the problem of low efficiency of manual cleaning and uneven cleaning of calcination chamber raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of carbon tank type furnace SCR denitration catalyst fixed soot blowing pipe structure, including furnace shell, furnace shell is provided with heat preservation layer inside, heat preservation layer is provided with calcination furnace inside, the annular opening is opened in the top of calcination furnace, and soot blowing assembly is arranged on the top side of calcination furnace;

[0006] Soot blowing assembly includes the protective box inserted in the annular opening inside calcination furnace, the height of annular opening of calcination furnace is greater than the height of protective box, the section of protective box is the right angle "U" structure, shunt pipe is fixedly connected on the outer wall of protective box, and spray head is arranged on the outer wall of shunt pipe;Protective box and calcination furnace form sliding connection, and high-pressure air pump is connected to the top of shunt pipe;Furnace shell top side is fixedly connected with winding box, and rotating shaft is rotatably connected in the inside of winding box;Motor is fixedly connected on the outer wall of winding box, and one end of motor shaft is connected with rotating shaft;Limiting frame is arranged on the inside of winding box, and fixed bolt is inserted on the limiting frame, and one end of fixed bolt is threadedly connected with protective box.

[0007] Preferably, the outer wall of the furnace shell is fixedly connected with a high-pressure air pump, and the outlet of the high-pressure air pump is connected with the top of the shunt pipe through a pipeline.

[0008] Preferably, a steel wire rope is wound on the outer wall of the rotating shaft, and one end of the steel wire rope is connected with the top of the protective box through the limiting frame.

[0009] Preferably, the calcining furnace is provided with a feeding pipe at the top and a discharging pipe at the bottom.

[0010] Preferably, the calcining furnace is provided with an exhaust valve at one side and a calcining spray gun at the bottom of the exhaust valve.

[0011] Compared with the prior art, the calcining furnace has the advantages that:

[0012] (1) The device can realize automatic cleaning of the calcining furnace and storage of the shunt pipe and the spray head, thereby ensuring the service life of the shunt pipe and the spray head.

[0013] (2) The device is provided with the automatically-lifting shunt pipe and the spray head at the top of the calcining furnace, and the shunt pipe and the spray head can evenly clean the inner wall of the calcining furnace during the descending process, thereby improving the cleaning efficiency.

[0014] (3) The device is installed in the protection box, and will not affect the work of the shunt pipe and the spray head, and can be stored and protected when the protection box is lifted to the top of the calcining furnace, thereby ensuring the service life of the shunt pipe and the spray head. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure schematic view of the fixed soot blowing pipe structure of the SCR denitration catalyst of the carbon tank furnace.

[0016] Figure 2 It is a structure schematic view of the fixed soot blowing pipe structure of the SCR denitration catalyst of the carbon tank furnace. Figure 1 It is an enlarged view of A in the fixed soot blowing pipe structure of the SCR denitration catalyst of the carbon tank furnace.

[0017] Figure 3 It is a front view of the protection box and the shunt pipe of the fixed soot blowing pipe structure of the SCR denitration catalyst of the carbon tank furnace.

[0018] Figure 4 It is a top view of the protection box of the fixed soot blowing pipe structure of the SCR denitration catalyst of the carbon tank furnace.

[0019] Figure 5 It is a sectional view of the winding box of the fixed soot blowing pipe structure of the SCR denitration catalyst of the carbon tank furnace.

[0020] In the figure: 1, furnace shell; 2, heat preservation layer; 3, calcination furnace; 4, soot blowing assembly; 41, winding box; 42, motor; 43, steel wire rope; 44, limiting frame; 45, fixing bolt; 46, protective box; 47, spray head; 48, shunt pipe; 49, rotating shaft; 410, high-pressure air pump; 5, feeding pipe; 6, smoke valve; 7, calcination spray gun; 8, discharge pipe. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a kind of carbon tank type furnace SCR denitration catalyst fixed soot blowing pipe structure, including furnace shell 1, furnace shell 1 inside is provided with heat preservation layer 2, furnace shell 1 outer wall is fixedly connected with high-pressure air pump 410, the gas outlet of high-pressure air pump 410 is connected with shunt pipe 48 top by pipeline;This structure can make the spray head 47 of shunt pipe 48 by high-pressure air pump 410 High-speed airflow is injected, high-speed airflow is used to clean the inner wall of calcination furnace 3;Furnace shell 1 top side is fixedly connected with winding box 41, rotating shaft 49 is rotatably connected in winding box 41, motor 42 is fixedly connected on the outer wall of winding box 41, and one end of the shaft of motor 42 is connected with rotating shaft 49;This structure can drive rotating shaft 49 to rotate automatically by motor 42;Limiting frame 44 is arranged on the inner side of winding box 41, and fixing bolt 45 is inserted on limiting frame 44, and one end of fixing bolt 45 is screw-connected with protective box 46;This structure can fix the position of protective box 46 by fixing bolt 45, to avoid the damage to calcination furnace 3 caused by the sudden drop of protective box 46 after rising;Steel wire rope 43 is wound on the outer wall of rotating shaft 49, and one end of steel wire rope 43 penetrates limiting frame 44 and is connected with the top of protective box 46;This structure can drive steel wire rope 43 on the outer wall of rotating shaft 49 to be wound or released by the rotation of rotating shaft 49, and the height of protective box 46 is reduced when steel wire rope 43 is released, and the height of protective box 46 is raised when steel wire rope 43 is wound;Heat preservation layer 2 is provided with calcination furnace 3 inside, heat preservation layer 2 is heat preservation brick, and feeding pipe 5 is arranged on the top of calcination furnace 3, and discharge pipe 8 is arranged on the bottom of calcination furnace 3;Smoke valve 6 and calcination spray gun 7 are arranged on one side of calcination furnace 3, and calcination spray gun 7 is located at the bottom of smoke valve 6;Annular opening is formed on the top of calcination furnace 3, and soot blowing assembly 4 is arranged on the top side of calcination furnace 3;

[0023] The soot blowing assembly 4 comprises a protective box 46 inserted in the annular opening of the calcining furnace 3, the height of the annular opening of the calcining furnace 3 is greater than the height of the protective box 46, the protective box 46 is in a right-angle "U" shape in cross section, a shunt pipe 48 is fixedly connected to the outer wall of the protective box 46, a spray head 47 is arranged on the outer wall of the shunt pipe 48, the protective box 46 is in sliding connection with the calcining furnace 3, and a high-pressure air pump 410 is connected to the top end of the shunt pipe 48; the protective box 46 of the device can be made of high-temperature-resistant material, the protective box 46 can protect the shunt pipe 48 and the spray head 47, and the service life of the shunt pipe 48 and the spray head 47 is guaranteed.

[0024] Working principle: when the fixed soot blowing pipe structure of the carbon tank furnace SCR denitration catalyst is used, first, the fixing bolt 45 is removed, then the motor 42 drives the rotating shaft 49 to rotate, the rotating shaft 49 drives the steel wire rope 43 to slowly release in the rotating process, the height of the protective box 46 at one end of the steel wire rope 43 is lowered along with the release of the steel wire rope 43, the high-pressure air pump 410 is started in the lowering process of the protective box 46, high-speed airflow enters the shunt pipe 48 and is then shunted and sprayed from the spray head 47, at this time, the high-speed airflow cleans the inner wall of the calcining furnace 3, after the cleaning work is completed, the motor 42 drives the rotating shaft 49 to reverse, then the steel wire rope 43 is retracted, the steel wire rope 43 drives the protective box 46 to rise in the retraction process, and the protective box 46 is spliced with the top of the calcining furnace 3, then the fixing bolt 45 is used to penetrate the limiting frame 44 and the protective box 46 to fix the protective box 46.

[0025] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A carbon tank furnace SCR denitration catalyst fixed soot blowing pipe structure, comprising a furnace shell (1), a heat preservation layer (2) is arranged in the furnace shell (1), and a calcining furnace (3) is arranged in the heat preservation layer (2), characterized in that: The calcination furnace (3) is provided with an annular opening at the top, and a soot blowing assembly (4) is arranged on the top side of the calcination furnace (3); The soot blowing assembly (4) comprises a protective box (46) inserted into the annular opening of the calcination furnace (3), the height of the annular opening of the calcination furnace (3) is greater than the height of the protective box (46), the protective box (46) is in a straight "U" shape in cross section, a shunt pipe (48) is fixedly connected to the outer wall of the protective box (46), a spray head (47) is arranged on the outer wall of the shunt pipe (48), the protective box (46) and the calcination furnace (3) are in sliding connection, a high-pressure air pump (410) is connected to the top end of the shunt pipe (48), a winding box (41) is fixedly connected to the top side of the furnace shell (1), a rotating shaft (49) is rotatably connected in the winding box (41), a motor (42) is fixedly connected to the outer wall of the winding box (41), one end of the shaft of the motor (42) is connected to the rotating shaft (49), a limiting frame (44) is arranged on the inner side of the winding box (41), a fixing bolt (45) is inserted into the limiting frame (44), one end of the fixing bolt (45) is threadedly connected to the protective box (46).

2. The fixed soot blowing pipe structure of the SCR denitration catalyst of the carbon tank furnace according to claim 1, characterized in that: The outer wall of the furnace shell (1) is fixedly connected with the high-pressure air pump (410), and the gas outlet of the high-pressure air pump (410) is connected to the top of the shunt pipe (48) through a pipeline.

3. The fixed soot blowing pipe structure of the SCR denitration catalyst of the carbon tank furnace according to claim 1, characterized in that: The outer wall of the rotating shaft (49) is wound with a steel wire rope (43), one end of the steel wire rope (43) penetrates through the limiting frame (44) and is connected to the top of the protective box (46).

4. The fixed soot blowing pipe structure of the SCR denitration catalyst of the carbon tank furnace according to claim 1, characterized in that: The top of the calcination furnace (3) is provided with a feeding pipe (5), and the bottom of the calcination furnace (3) is provided with a discharging pipe (8).

5. The fixed soot blowing tube structure of the SCR De-NOx catalyst of the carbon tank furnace according to claim 1, characterized in that: One side of the calcination furnace (3) is provided with a smoke exhaust valve (6) and a calcination spray gun (7), and the calcination spray gun (7) is located at the bottom of the smoke exhaust valve (6).

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