CN219037596U

CN219037596U - Presintering furnace system suitable for denitrification facility

Info

Publication number: CN219037596U
Application number: CN202221722054.5U
Authority: CN
Inventors: 夏国栋; 肖国先; 姚凯; 冯黎明
Original assignee: Nanjing Juhua Industrial Technology Co ltd
Current assignee: Nanjing Juhua Industrial Technology Co ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2023-05-16
Anticipated expiration: 2032-07-06

Abstract

The utility model discloses a presintering furnace system suitable for a denitration device, wherein an air inlet, a feeding port and a solid-gas separation chamber are arranged on an incinerator, two air outlets are arranged on an air pipe, one air outlet is communicated with the air inlet, the other air outlet is communicated with a decomposing furnace, the solid-gas separation chamber is arranged at a discharge port of the incinerator, a slag discharging pipe and a smoke discharging pipe are respectively connected to the solid-gas separation chamber, the slag discharging pipe is communicated with a combustion chamber, and the smoke discharging pipe is communicated with the decomposing furnace. The utility model separates the flue gas from the slag at the outlet of the incinerator, the slag slides to the lower part of the denitration device, and the flue gas is upwards connected to the decomposing furnace, so that the flue gas is prevented from directly entering the lower part of the denitration device, the implementation of the presintering furnace is ensured on one hand, and the effect of the denitration device is not influenced on the other hand.

Description

Presintering furnace system suitable for denitrification facility

Technical field:

the utility model relates to a presintering furnace system suitable for a denitration device.

The background technology is as follows:

the flue gas and the waste residue of the presintering furnace adopted by the existing cement kiln system are generally the decomposing furnace of the direct cement kiln, when the cement kiln system considers the denitration device, the original decomposing furnace position can be occupied by the denitration device, the principle of the denitration device is that the NOx emission is reduced through reduction combustion, if the presintering furnace is directly connected into the denitration device according to the original presintering furnace, the reduction atmosphere required by the denitration device can be damaged due to the higher oxygen content in the flue gas of the presintering furnace, so that the denitration effect is influenced, and therefore, the prior art is necessarily improved to solve the defects of the prior art.

The utility model comprises the following steps:

the present utility model is directed to solving the problems of the prior art described above and provides a burn-in furnace system suitable for a denitration apparatus.

The utility model adopts the technical scheme that:

the utility model provides a burn-in stove system suitable for denitrification facility, includes burns burning furnace, tuber pipe, scum pipe, exhaust pipe and has the denitrification facility of decomposing furnace and combustion chamber, be equipped with air intake, feed inlet and solid-gas separation room on burning furnace, be equipped with two air outlets on the tuber pipe, an air outlet with the air intake is linked together, another air outlet with decomposing furnace is linked together, and solid-gas separation room sets up in the discharge gate department of burning furnace, and slag pipe and exhaust pipe are connected respectively on solid-gas separation room, and slag pipe is linked together with the combustion chamber, and exhaust pipe is linked together with the decomposing furnace.

Further, the slag discharging pipe and the smoke discharging pipe are respectively provided with an observation door and a poking hole.

Further, the slag discharging pipe is provided with a locking air valve and an air cannon.

Further, the bottom surface of the inner cavity of the solid-gas separation chamber is of a downward inclined slope structure.

Further, the bottom surface of the incinerator is formed by a plurality of steps which are downwards arranged step by step, a pushing device is arranged on one side of the step at the top end, and a group of air cannons are arranged on one side of each remaining step.

The utility model has the following beneficial effects:

the utility model separates the flue gas from the slag at the outlet of the incinerator, the slag slides to the lower part of the denitration device, and the flue gas is upwards connected to the decomposing furnace, so that the flue gas is prevented from directly entering the lower part of the denitration device, the implementation of the presintering furnace is ensured on one hand, and the effect of the denitration device is not influenced on the other hand.

Description of the drawings:

fig. 1 is a structural diagram of the present utility model.

FIG. 2 is a diagram showing the connection structure of the slag discharging pipe and the smoke discharging pipe to the incinerator.

Fig. 3 is a structural diagram of a denitration device according to the present utility model.

The specific embodiment is as follows:

the utility model is further described below with reference to the accompanying drawings.

Referring to fig. 1 and 2, the burn-in furnace system for a denitration device according to the present utility model includes an incinerator 2, an air duct 3, a slag dropping pipe 4, a smoke exhaust pipe 5, and a denitration device having a decomposing furnace 11 and a combustion chamber 12, wherein the incinerator 2 is provided with an air inlet 21, a feeding port 22, and a solid-gas separation chamber 23, the air duct 3 is provided with two air outlets, one air outlet is communicated with the air inlet 21, and the other air outlet is communicated with the decomposing furnace 11.

The solid-gas separation chamber 23 is arranged at the discharge hole of the incinerator 2, the slag falling pipe 4 and the smoke exhaust pipe 5 are respectively connected to the solid-gas separation chamber 23, the slag discharging pipe 4 faces downwards and is communicated with the combustion chamber 12, and the smoke exhaust pipe 5 faces upwards and is communicated with the decomposing furnace 11.

The utility model separates the flue gas and the slag at the outlet of the incinerator 2, the slag slides to the lower part of the denitration device, and the flue gas is upwards connected to the decomposing furnace 11, so that the flue gas is prevented from directly entering the lower part of the denitration device, the implementation of the presintering furnace is ensured on one hand, and the effect of the denitration device is not influenced on the other hand.

The slag discharging pipe 4 and the smoke discharging pipe 5 are provided with an observation door and a poking hole 6. And opening an observation door to observe whether the slag falling pipe 4 or the smoke exhaust pipe 5 is blocked, and dredging the slag discharging pipe 4 or the smoke exhaust pipe 5 through a poking hole 6.

The slag discharge pipe 4 is provided with a locking air valve 7 and an air cannon 8, the locking air valve 7 is opened and closed according to the slag discharge amount, and the air cannon 8 is periodically opened to avoid the blockage of the slag discharge pipe.

In order to avoid accumulation in the solid-gas separation chamber 23, the bottom surface of the inner cavity of the solid-gas separation chamber 23 is in a downward inclined slope structure.

The bottom surface of the incinerator 2 is formed by a plurality of steps which are downwards arranged step by step, a pushing device 24 is arranged on one side of the topmost step, and a group of air cannons 8 are arranged on one side of each of the remaining steps. The steps on the bottom surface of the incinerator 2 ensure the combustion time of the waste, buffer unstable feeding flows, further strengthen the incineration effect of the incineration platforms and the air cannons 8, flexibly control the residence time and ensure the combustion of the waste.

Fig. 3 is a schematic diagram of the present utility model applied to the product of the present patent (202120990386.0) of my company, in which the present utility model separates the waste gas from the slag, and the waste gas is kept away from the denitration device, without affecting the effect of the denitration device.

The foregoing is merely a preferred embodiment of the utility model, and it should be noted that modifications could be made by those skilled in the art without departing from the principles of the utility model, which modifications would also be considered to be within the scope of the utility model.

Claims

1. Presintering furnace system suitable for denitrification facility, its characterized in that: including burning furnace (2), tuber pipe (3), scum pipe (4), exhaust pipe (5) and have the denitrification facility of decomposing furnace (11) and combustion chamber (12), be equipped with air intake (21), feed inlet (22) and solid-gas separation room (23) on burning furnace (2), be equipped with two air outlets on tuber pipe (3), one air outlet with air intake (21) are linked together, another air outlet with decomposing furnace (11) are linked together, and solid-gas separation room (23) set up in the discharge gate department of burning furnace (2), and slag pipe (4) and exhaust pipe (5) are connected respectively on solid-gas separation room (23), and slag pipe (4) down and be linked together with combustion chamber (12), exhaust pipe (5) up and be linked together with decomposing furnace (11).

2. The burn-in furnace system for a denitration apparatus according to claim 1, wherein: the slag discharging pipe (4) and the smoke discharging pipe (5) are provided with an observation door and a poking hole (6).

3. The burn-in furnace system for a denitration apparatus according to claim 1, wherein: the slag discharge pipe (4) is provided with a locking air valve (7) and an air cannon (8).

4. The burn-in furnace system for a denitration apparatus according to claim 1, wherein: the bottom surface of the inner cavity of the solid-gas separation chamber (23) is of a downward inclined slope structure.

5. The burn-in furnace system for a denitration apparatus according to claim 1, wherein: the bottom surface of the incinerator (2) is formed by a plurality of steps which are downwards arranged step by step, a pushing device (24) is arranged on one side of the step at the top end, and a group of air cannons (8) are arranged on one side of each remaining step.