CN201368459Y

CN201368459Y - Injection-type gas and air pre-heating gas burner for carbon anode / cathode roaster

Info

Publication number: CN201368459Y
Application number: CNU2008202238067U
Authority: CN
Inventors: 郭力
Original assignee: Sichuan Huasuo Automation Information Engineering Co Ltd
Current assignee: Sichuan Huasuo Automation Information Engineering Co Ltd
Priority date: 2008-12-26
Filing date: 2008-12-26
Publication date: 2009-12-23
Anticipated expiration: 2018-12-26

Abstract

The utility model discloses an injection-type gas and air pre-heating gas burner for a carbon anode / cathode roaster, which essentially comprises a roaster base (1), an air inlet pipe (2) fixed on the roaster base (1) and a gas nozzle (5) arranged in the roaster base (1), and is characterized in that a regulating air door (4) is arranged outside the roaster base (1); a coil device (3) is arranged in the roaster base (1); the regulating air door (4) is directly communicated with a flue (7) in the roaster base (1); and one end of the coil device (3) is connected with the air outlet of the air inlet pipe (2), and the other end thereof is connected with the gas nozzle (5). The injection-type gas and air pre-heating gas burner for the carbon anode / cathode roaster can not only automatically regulate the amount of combustion air entering the flue (chamber) in the working state and automatically prevent the combustion air from entering the non-working state, but also greatly improve the gas burning efficiency.

Description

Carbon element sun/cathode baking furnace emission-suction gas, air preheat gas burner

Technical field

The utility model relates to a kind of gas burner, specifically is meant a kind of carbon element sun/cathode baking furnace emission-suction gas, air preheat gas burner.

Background technology

At present, for the anode-baking furnace that improves domestic carbon product factory or the efficiency of combustion of cathode baking furnace, most anode-baking furnace or cathode baking furnace have all adopted the automatic control combustion system.In applied automatic control combustion system, all burners all are subjected to the control of computer or PLC, with quirk (furnace chamber) combustible gas injected of pulse mode to roaster, and come work according to predefined heating curve.Guarantee that the fuel gas that is sprayed can fully burn, therefore also need roaster is replenished certain combustion air.

But but also there is the defective of following two aspects in present sun/cathode baking furnace: on the one hand, most burner all adopts air door open in usual to come the combustion-supporting air quantity in the quirk (furnace chamber) that enters roaster is regulated.Because air door open in usual need be by the combustion case of technical staff according to reality, the aperture size of manual this air door open in usual of adjusting, therefore, the efficiency of combustion of whole roaster can be subjected to the restriction of factors such as at that time mood of technical staff, technical merit to a large extent; Simultaneously, because roaster mostly is the negative pressure method of operation, no matter and air door open in usual be burner in working order or off working state, all be in the state of unlatching all the time, therefore under the influence of the negative pressure in roaster, after quitting work, burner still have a large amount of combustion airs to enter endlessly in the quirk (furnace chamber) of roaster by this air door open in usual.And because the temperature of this combustion-supporting gas is lower, the combustion air that enters is under not combustion-supporting situation, the trend that the interior temperature of quirk (furnace chamber) is risen is affected, even cooling, thereby causes the intensification of burning of the more fuel gas of whole combustion system consumption.

On the other hand, no matter the gas that is used to burn is natural gas or coal gas, it is normal temperature or is lower than environment temperature for the gas temperature that comes by source of the gas, for many years be engaged in the experience of carbon baking furnace burning automation control and a large amount of site tests according to my company, this normal temperature or the combustion gas that is lower than environment temperature enter in the stove of quirk (furnace chamber) back with respect to 1150 ℃ and also can produce the disadvantageous considerable influence that heats up for the temperature, also can cause the intensification of burning of the more fuel gas of combustion system consumption, cause unnecessary waste, thereby can cause product cost to raise.

Therefore, existing sun/cathode baking furnace can not well be realized efficiently, requirements of saving energy, the improvement of existing sun/cathode baking furnace has just been become technical staff's the task of top priority.

The utility model content

The purpose of this utility model is to overcome the shortcoming and defect of above-mentioned prior art, and it is carbon element sun/cathode baking furnace emission-suction gas, the air preheat gas burner of HSRSQT-0906 type that a kind of model is provided.This gas burner can not only be regulated the combustion-supporting air quantity that enters quirk (furnace chamber) automatically when the gas burner duty, when off working state automatic entering of blocking-up combustion air, and can also improve the efficiency of combustion of combustion gas greatly.

The purpose of this utility model is achieved through the following technical solutions: carbon element sun/cathode baking furnace emission-suction gas, air preheat gas burner, main by the stove seat, be fixed on the air inlet pipe on the stove seat, and the gas spray head that is arranged on stove seat inside is formed, the utility model also is provided with damper in the outside of stove seat, also is provided with coil device in the inside of stove seat; Described damper quirk direct and in the stove seat is connected; One end of coil device links to each other with the gas outlet of air inlet pipe, and the other end then is connected with described gas spray head.

For the ease of regulating combustion-supporting air quantity according to the pressure in the quirk, described damper is a cavity body, and one of them side convexes to form an air inlet outward; The bottom of cavity body has a hole, and is connected with quirk by this hole; Also be provided with the baffle plate that a upper end and air inlet are movably connected in the inside of air inlet, also be provided with the orienting device that baffle plate can only inwardly be swung in the outside of baffle plate simultaneously.

Described orienting device is a fixture block.

Further, the shape of described baffle plate, size all with the shape of the cross section of air inlet inside, big or small identical; Described coil device is fixed in the air-pre-heating cavity of stove seat inside, and adopts high temperature resistant stainless steel to be made, and its length is 2～5m.

The utility model compared with prior art has following advantage and beneficial effect:

(1) the utility model has adopted damper, can not only regulate combustion-supporting air quantity automatically according to negative pressure condition when the duty of gas burner, and can also block cold air automatically when off working state and enter;

(2) because combustion gas of the present utility model is carried out preheating through coil device before entering quirk, therefore thoroughly overcome low temperature combustion gas in the past and entered behind the quirk cooling influence temperature, programming rate is accelerated, can be easily, heat up according to heating curve accurately; Make the more old-fashioned burner of burner pulsation operating frequency reduce 20%-60% simultaneously;

Also passed through preheating when (3) combustion air enters quirk, therefore can not only make that combustion gas and combustion air mix more cmpletely, and make that the burning of combustion gas is more abundant, thus improved efficiency of combustion greatly, improved of the influence of boiler face radiant heat to the workshop environment.

Description of drawings

Fig. 1 is an overall structure principal section schematic diagram of the present utility model;

Fig. 2 is an overall structure of the present utility model right side generalized section;

Fig. 3 is a damper structural profile schematic diagram of the present utility model.

The specific embodiment

Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the utility model do, but embodiment of the present utility model is not limited thereto.

Embodiment

As shown in Figure 1, 2, be used in the utility model above the vertical stove seat 1 that is fixed on carbon annode or cathode baking furnace of the air inlet pipe 2 of transport gas or coal gas, and the part of this air inlet pipe 2 is positioned at the outside of stove seat 1, and be connected with a valve 12, so that control flow and flow velocity by the combustion gas of this air inlet pipe 2 by this valve 12.Another part of air inlet pipe 2 then is positioned at the inside of stove seat 1, and is connected with the inlet end of the coil device 3 that is positioned at stove seat 1 inside.

Owing to be normal temperature or be lower than environment temperature for the natural gas that comes or the gas temperature of coal gas from source of the gas, so when for temperature in the stove of degree more than 1150 ℃, producing after these combustion gas enter the quirk 7 (furnace chamber) of burner to the disadvantageous considerable influence that heats up, thereby cause the intensification of burning of the more fuel gas of combustion system consumption, certainly will cause unnecessary waste.In order to overcome this defective, just need carry out preheating, so coil device 3 just is arranged on the inside of the air-pre-heating cavity 6 of stove seat 1 inside to this combustion gas.Quirk 7 is positioned at the middle position of stove seat 1 inside, and described air-pre-heating cavity 6 then is positioned at the periphery of this quirk 7, and is an annular shape, 1 central authorities that are positioned at this air-pre-heating cavity 6 of quirk.Coil device 3 is around the shape arrangement in the shape of a spiral of this air-pre-heating cavity 6, and its optimum length is 2～5m.Because the heat of preheating is mainly from the radiant heat in the gas well in the burner, therefore, preheating through coil device 3, combustion gas in its pipe preceding temperature in entering stove can reach 200～400 ℃, its temperature is compared during than normal temperature and has been improved more than 10 times, thereby can eliminate the negative effect that cryogenic gas enters the cooling of back temperature in the stove greatly.

In order to improve heat exchanger effectiveness, described coil device 3 adopts high temperature resistant stainless steel to be made, and the shape of the cross section of this coil device 3 can be different shapes such as circle, square, rectangle, hexagon.The outlet side of coil device 3 is positioned at the inside of quirk 7, and is fixedly linked with gas spray head 5.Therefore this gas spray head 5 also just is positioned at the inside of quirk 7 by the outlet side of this coil device 3.

In order to overcome burner in the inoperative period, quirk 7 inside that cold air constantly enters in a steady stream also are provided with a damper 4 in the outside of stove seat 1, and its concrete structure as shown in Figure 3.

Described damper 4 is a cavity body, and its profile can be made into rectangle or square.Any one side of this cavity body convexes to form an air inlet 8 outward, and also is provided with a baffle plate 9 in the inside of this air inlet 8, and all size and the shape with the cross section of air inlet 8 is identical with shape for its size.The swing of baffle plate 9 for convenience, one end of this baffle plate 9 links to each other with the upper end of air inlet 8 by an axle, the other end of baffle plate 9 then can be along this swing, thereby makes baffle plate 9 form an aperture at the vertical plane of air inlet 8, is convenient to entering of combustion air.

Also have in the bottom of this cavity body one with the quirk 7 of stove seat 1 inside directly together with hole 11.When the flow velocity of the fuel gas in the quirk 7 is fast more, the negative pressure value of quirk 7 inside is just big more, then baffle plate 9 is also just big more with the angle that vertical plane is produced, thereby make that the combustion-supporting air quantity in the quirk 7 (furnace chamber) that enters roaster is just many more, thereby reach the purpose that automatic control enters the combustion-supporting air quantity in the roaster.Simultaneously in order to make baffle plate 9 also be provided with an orienting device 10 in the outside of baffle plate 9 to the swing of the inside of air inlet 8.For the ease of implementing the utility model, this orienting device 10 is a fixture block.This fixture block is fixed on the inside of air inlet 8 and is positioned at the outside of baffle plate 9, can be fixed on upper end, lower end, left end or the right-hand member of air inlet 8.

Because the combustion air that enters in the quirk 7 in working hour is a cold air, can the burning of combustion gas be had a negative impact, therefore also need the combustion air that enters quirk 7 is carried out preheating.Because the combustion air that directly enters from quirk 7 is owing to also can be subjected to radiant heat in the gas well, its temperature also can reach 150～300 ℃, therefore helps the burning of combustion gas.

By preheating to combustion gas and combustion air, the utility model has been eliminated cryogenic gas greatly and has been entered the negative effect of the interior back of stove to the cooling of temperature in the stove, also improved simultaneously the efficiency of combustion of combustion gas greatly, and then reach the temperature that makes in roaster (chamber) quirk 7 according to default heating curve, stable operation is rapidly heated, save combustible gas, reduce production costs the main purpose of improving the quality of products.

As mentioned above, just can realize the utility model preferably.

Claims

1, carbon element sun/cathode baking furnace emission-suction gas, air preheat gas burner, mainly by stove seat (1), be fixed on the air inlet pipe (2) on the stove seat (1), and the gas spray head (5) that is arranged on stove seat (1) inside is formed, it is characterized in that, also be provided with damper (4) in the outside of stove seat (1), also be provided with coil device (3) in the inside of stove seat (1); Described damper (4) quirk (7) direct and in the stove seat (1) is connected; One end of coil device (3) links to each other with the gas outlet of air inlet pipe (2), and the other end then is connected with gas spray head (5).

2, carbon element sun according to claim 1/cathode baking furnace is characterized in that with emission-suction gas, air preheat gas burner described damper (4) is a cavity body, and one of them side convexes to form an air inlet (8) outward; The bottom of cavity body has a hole (11), and is connected with quirk (7) by this hole; Also be provided with the baffle plate (9) that a upper end and air inlet (8) are movably connected in the inside of air inlet (8), also be provided with the orienting device (10) that baffle plate can only inwardly be swung simultaneously in the outside of baffle plate (9).

3, carbon element sun according to claim 2/cathode baking furnace is characterized in that with emission-suction gas, air preheat gas burner described orienting device (10) is a fixture block.

4, carbon element sun according to claim 2/cathode baking furnace is characterized in that with emission-suction gas, air preheat gas burner, the shape of described baffle plate (9), size all with the shape of the cross section of air inlet (8) inside, big or small identical.

5, carbon element sun according to claim 1/cathode baking furnace is characterized in that with emission-suction gas, air preheat gas burner, and described coil device (3) is fixed in the inner air-pre-heating cavity (6) of stove seat (1).

6, carbon element sun/cathode baking furnace is characterized in that with emission-suction gas, air preheat gas burner according to claim 1 or 5, and described coil device (3) adopts high temperature resistant stainless steel to be made, and its length is 2～5m.