CN211204891U

CN211204891U - Vanadium-nitrogen alloy kiln with improved air inlet structure

Info

Publication number: CN211204891U
Application number: CN201921693171.1U
Authority: CN
Inventors: 雷威
Original assignee: Chongyang Xinrui Vanadium Industry Co Ltd
Current assignee: Chongyang Xinrui Vanadium Industry Co Ltd
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-08-07
Anticipated expiration: 2029-10-11

Abstract

The utility model discloses a vanadium-nitrogen alloy kiln with an improved air inlet structure, which relates to the technical field of vanadium-nitrogen alloy preparation, and specifically comprises a feed inlet and an annular furnace body, wherein the bottom of the furnace body is provided with a graphite plate for supporting and conveying a vanadium-nitrogen alloy material frame, the tail part of the furnace body is connected with an air inlet transition pipe, the air inlet transition pipe is connected with a nitrogen gas supply pipe, and the top end of the position, close to the feed inlet, at the front part of the furnace body is provided with an air outlet; the top of gas outlet and one side port fixed connection of three-way valve, the opposite side port of three-way valve passes through first connecting pipe nitrogen gas supply pipe side intercommunication, and the middle part port of three-way valve passes through second connecting pipe and deaerator fixed connection, and deaerator passes through third connecting pipe and nitrogen gas supply pipe fixed connection. The utility model discloses an in the implementation, through to nitrogen gas and thermal recovery, existing efficiency has improved the rate of utilization of nitrogen gas, has also reduced the heating cost of kiln simultaneously, has improved the practicality of kiln, is worth promoting.

Description

Vanadium-nitrogen alloy kiln with improved air inlet structure

Technical Field

The utility model relates to a vanadium nitrogen alloy preparation technical field specifically is a vanadium nitrogen alloy kiln with modified inlet structure.

Background

The vanadium-nitrogen alloy can be used as a novel steel additive to replace ferrovanadium for producing microalloyed steel, and can improve the comprehensive mechanical properties of the steel, such as strength, toughness, ductility, thermal fatigue resistance and the like, and ensure that the steel has good weldability when added to the steel; under the condition of achieving the same strength, the addition of the vanadium-nitrogen alloy can save 30-40% of vanadium compared with the addition of vanadium, thereby reducing the cost; vanadium-nitrogen alloy has been widely used by domestic and foreign steel mills, and the production process and production equipment thereof have been developed rapidly.

The vanadium-nitrogen alloy smelting technology is generally formed by burning a graphite kiln, and circulating nitrogen needs to be continuously supplied to the graphite kiln when the burning is carried out, so that firstly, nitrogen needed in the preparation process of the vanadium-nitrogen alloy is provided, and in addition, an environment which is as anaerobic as possible is provided, and the preparation of the vanadium-nitrogen alloy is facilitated.

The chinese utility model patent specification with patent number CN208398622U discloses a vanadium-nitrogen alloy kiln with improved air inlet structure, though solved the graphite cake to a certain extent and can take place the thickness attenuate, the oxidation leads to cracked problem, but the kiln is at work, the air that originally exists still can cause the problem of oxidation in the kiln, and nitrogen gas after the use is direct to be discharged from the gas outlet, not only nitrogen gas can't fully react with the alloy, reduce the utilization ratio of nitrogen gas, and also can take away a lot of heats, cause extravagant waste

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vanadium nitrogen alloy kiln with modified inlet structure to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a vanadium-nitrogen alloy kiln with an improved air inlet structure comprises a feed inlet and an annular furnace body, wherein a graphite plate for supporting and conveying a vanadium-nitrogen alloy material frame is arranged at the bottom of the furnace body;

the top of gas outlet and one side port fixed connection of three-way valve, the other side port of three-way valve and the one end fixed connection of first connecting pipe, the other end and the nitrogen gas supply pipe side intercommunication of first connecting pipe, the middle part port of three-way valve and the one end fixed connection of second connecting pipe, the other end and one side fixed connection of deaerator of second connecting pipe, deaerator's opposite side and the one end fixed connection of third connecting pipe, the other end and the side fixed connection of nitrogen gas supply pipe of third connecting pipe.

As a further aspect of the present invention: the deaerating plant mainly comprises box, baffling board, air vent, leakage fluid dram and inlet, and one side bottom and the second connecting pipe intercommunication of box, the opposite side top and the third connecting pipe intercommunication of box, the leakage fluid dram has been seted up to the opposite side bottom of box, and the inlet has been seted up at the top of box, and the even fixed mounting in inside of box has a plurality of horizontally baffling boards, and the air vent has been seted up to one of them end of baffling board, and the air vent on the adjacent baffling board is located the different ends of baffling board.

As a further aspect of the present invention: and valves are fixedly arranged on the liquid outlet and the liquid inlet.

As a further aspect of the present invention: the baffle plate and the box body are integrally formed.

Compared with the prior art, the beneficial effects of the utility model are that: in the implementation process of the utility model, the original air in the kiln is discharged, thereby improving the working effect of the kiln; through the recovery of nitrogen and heat, the utilization rate of nitrogen is effectively improved, the heating cost of the kiln is reduced, the practicability of the kiln is improved, and the kiln is worthy of popularization.

Drawings

Fig. 1 is a schematic structural diagram of a vanadium-nitrogen alloy furnace with an improved air inlet structure.

Fig. 2 is a schematic structural diagram of a deoxidizing device in a vanadium-nitrogen alloy kiln with an improved air inlet structure.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-2, in an embodiment of the present invention, a vanadium-nitrogen alloy kiln with an improved air inlet structure includes a feed inlet 10 and an annular furnace body 20, a graphite plate 22 for supporting and conveying a vanadium-nitrogen alloy material frame 100 is disposed at the bottom of the furnace body 20, an air inlet transition pipe 40 is connected to the tail of the furnace body 20, the air inlet transition pipe 40 is connected to a nitrogen gas supply pipe 30, and an air outlet 50 is disposed at the top end of the front portion of the furnace body 20 near the feed inlet 10;

the top end of the air outlet 50 is fixedly connected with a port at one side of a three-way valve 5, a port at the other side of the three-way valve 5 is fixedly connected with one end of a first connecting pipe 3, the other end of the first connecting pipe 3 is communicated with the side of a nitrogen gas supply pipe 30, a port at the middle part of the three-way valve 5 is fixedly connected with one end of a second connecting pipe 4, the other end of the second connecting pipe 4 is fixedly connected with one side of a deaerating device 1, the other side of the deaerating device 1 is fixedly connected with one end of a third connecting pipe 2, the other end of the third connecting pipe 2 is fixedly connected with the side of the nitrogen gas supply pipe 30, when in use, nitrogen gas is input into the furnace body 20 through the nitrogen gas supply pipe 30, air originally existing in the furnace body 20 is exhausted, the direction of the three-way valve 5 is adjusted, the air and the nitrogen gas pass through the deaerating, the orientation of the three-way valve 5 is adjusted, so that nitrogen returns to the nitrogen supply pipe 30 again through the first connecting pipe 3, the nitrogen and heat are recycled, the utilization rate of the nitrogen is effectively improved, the heating cost of the kiln is reduced, the practicability of the kiln is improved, and the kiln is worthy of popularization;

the oxygen removing device 1 mainly comprises a box body 11, a baffle plate 12, vent holes 13, a liquid discharge port 14 and a liquid inlet 15, wherein the bottom of one side of the box body 11 is communicated with a second connecting pipe 4, the top of the other side of the box body 11 is communicated with a third connecting pipe 2, the bottom of the other side of the box body 11 is provided with the liquid discharge port 14, a valve is fixedly arranged on the liquid discharge port 14, the top of the box body 11 is provided with the liquid inlet 15, the valve is fixedly arranged on the liquid inlet 15, a plurality of horizontal baffle plates 12 are uniformly and fixedly arranged in the box body 11, the baffle plates 12 and the box body 11 are integrally formed, one end of each baffle plate 12 is provided with the vent hole 13, the vent holes 13 on the adjacent baffle plates 12 are positioned at, thereby improving the oxygen removing effect to the air and containing the acidic ferrous chloride solution in the box body 11.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention, and the following claims are therefore to be read in this light of the appended claims.

Claims

1. A vanadium-nitrogen alloy kiln with an improved air inlet structure comprises a feed inlet (10) and an annular furnace body (20), and is characterized in that a graphite plate (22) for supporting and conveying a vanadium-nitrogen alloy material frame (100) is arranged at the bottom of the furnace body (20), an air inlet transition pipe (40) is connected to the tail of the furnace body (20), the air inlet transition pipe (40) is connected with a nitrogen gas supply pipe (30), and an air outlet (50) is formed in the top end of the front part of the furnace body (20) close to the feed inlet (10);

the top of gas outlet (50) and one side port fixed connection of three-way valve (5), the opposite side port of three-way valve (5) and the one end fixed connection of first connecting pipe (3), the other end and the nitrogen gas supply pipe (30) side intercommunication of first connecting pipe (3), the middle part port of three-way valve (5) and the one end fixed connection of second connecting pipe (4), the other end of second connecting pipe (4) and one side fixed connection of deaerating plant (1), the opposite side of deaerating plant (1) and the one end fixed connection of third connecting pipe (2), the other end of third connecting pipe (2) and the side fixed connection of nitrogen gas supply pipe (30).

2. The vanadium-nitrogen alloy kiln with the improved air inlet structure as claimed in claim 1, wherein the deaerator (1) is mainly composed of a box body (11), baffle plates (12), vent holes (13), a liquid outlet (14) and a liquid inlet (15), the bottom of one side of the box body (11) is communicated with a second connecting pipe (4), the top of the other side of the box body (11) is communicated with a third connecting pipe (2), the bottom of the other side of the box body (11) is provided with the liquid outlet (14), the top of the box body (11) is provided with the liquid inlet (15), a plurality of horizontal baffle plates (12) are uniformly and fixedly installed in the box body (11), the vent holes (13) are formed in one end of each baffle plate (12), and the vent holes (13) in the adjacent baffle plates (12) are located at different ends of the baffle plates (12).

3. The vanadium-nitrogen alloy furnace with the improved air inlet structure as claimed in claim 2, wherein valves are fixedly mounted on the liquid outlet (14) and the liquid inlet (15).

4. A vanadium-nitrogen alloy furnace with an improved air intake structure according to claim 2, wherein the baffles (12) are formed integrally with the casing (11).