CN2915875Y

CN2915875Y - Annular body porous short flame combustor

Info

Publication number: CN2915875Y
Application number: CN 200620030544
Authority: CN
Inventors: 刘世聚; 周福辰; 崔铁山; 魏富军; 黄丙乾; 张德松; 范建超; 刘浩磊
Original assignee: ZHENGZHOU YUXING REFRACTORY MATERIAL CO Ltd
Current assignee: Henan Yuxing Hot Blast Stove Engineering Technology Co., Ltd.
Priority date: 2006-06-29
Filing date: 2006-06-29
Publication date: 2007-06-27
Anticipated expiration: 2016-06-29

Abstract

The utility mode is an annular body porous short flame combustor which is used to solve the problems to raise the temperature in the furnace and the safety production, the technical proposal is that, a ring body is positioned on the regenerator of an air heating furnace, an air pre-heating loop and a gas pre-heating loop are positioned in the ring body, an air-inlet pipe, which is communicated with the air pre-heating loop, is positioned at the lower part of the ring body, and another air-inlet pipe, which is communicated with the gas pre-heating loop, is positioned at the top part of the ring body, a plurality of air-inlets are positioned on the top part of the air pre-heating loop, a plurality of gas-inlets are positioned at the inside part of the gas pre-heating loop, the air-inlets are communicated with the gas-inlets to form a outlet of combined gas, which is also communicated a burning chamber of the regenerator, the utility model is simple in structure, new and unique, the investment is low and the space of the regenerator is large, the gas is burnt completely and the heating temperature for the air is high, the heating of the regenerator is fast, the utility model is a creative improvement for the existing burning and the extension and application of the utility model have significant economic and social profit.

Description

A kind of ring body multi-hole short flame burner

One, technical field

A kind of ring body multi-hole short flame burner that the utility model relates to use on the blast funnace hot blast stove.

Two, background technology

Burner is a corollary apparatus on the blast funnace hot blast stove, still, and present various burners, as the following situation of ceramic burner ubiquity:

(1), the mixing of coal gas and combustion air is relatively poor, excess air is bigger, and the not CO of combustion is arranged in the waste gas, the raising of excess air and uncombusted CO content has reduced the theoretical combustion temperature of fuel, influences the raising of hot-blast furnace temperature and wind pushing temperature;

(2), medium composition distributes serious unevenly, reduced efficiency of combustion and temperature of combustion, liner is damaged because of the inequality of being heated, the result of use and the life-span of reduction burner;

(3), combustion flame produces " vibration ", when especially using the bigger excess air coefficient of high heating value gas and employing, " vibration " easier generation.

Though a kind of burner (application number: 200310111478.3) the problems referred to above are overcome is to some extent now arranged, but its structure is complicated, and the gas mixing still has inequality, gas-fired is not cmpletely, particularly coal gas and combustion air (comprise application number: the 00114573.X burner) have tangible unsafe problems in the outdoor mixing of burner combustion, because the outdoor mixing under the high temperature easily sets off an explosion, this potential safety hazard must attract great attention aborning.

Three, utility model content

At above-mentioned situation, the purpose of the utility model just provides a kind of novel ring body multi-hole short flame burner, improve the problem of furnace temperature and safety in production, the technical scheme of its solution is, on the regenerator external wall of upper portion of hotblast stove, ring body is housed, air preheating ring road and gas preheating circuit are arranged in the ring body, the gas inlet pipe that communicates with the preheating of air circuit is arranged at the ring body bottom, and the gas entry pipe that communicates with the gas preheating circuit is arranged at top, and a plurality of airs are arranged at preheating of air circuit top, gas preheating circuit inboard has a plurality of gas exits, gas exit is connected with air, constitutes the end mixed gas outlet, and is connected with the combustion chamber on regenerator top, the utility model is simple in structure, novel unique, less investment, the regenerator space is big, gaseous combustion is abundant, safe in utilization, air heating temperature height, the heat storage heating is fast, be that it applies huge economic and social benefit to existing combustion unit inventive improvements.

Four, description of drawings

Fig. 1 is a structural profile front view of the present utility model.

Fig. 2 be among the utility model Fig. 1 A-A to view.

Fig. 3 be among the utility model Fig. 1 B-B to view.

Fig. 4 is user mode figure of the present utility model (12 are the hot-blast outlet of combustion chamber among the figure).

Five, embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.

By shown in Figure 1, its structure of the utility model is, on regenerator 11 external wall of upper portion 8 (body of wall) of hotblast stove ring body 10 is housed, air preheating ring road 2 and gas preheating circuit 4 are arranged in the ring body 10, the gas inlet pipe 1 that communicates with the preheating of air circuit is arranged at ring body 10 bottoms, the gas entry pipe 3 that communicates with gas preheating circuit 4 is arranged at top, a plurality of airs 5 are arranged at preheating of air circuit 2 tops, gas preheating circuit 4 inboards have a plurality of gas exits 6, gas exit 6 is connected with air 5, constitute end mixed gas outlet 7, and be connected with the combustion chamber 13 on regenerator 11 tops.

For guaranteeing result of use, particularly improve the abundant burning of furnace temperature and mixed gas, circuit 2 is every being set to spirrillum or circular preheating of air pipeline by interlayer 9, the air 5 that communicates with circuit 2, gas exit 6 and mixed gas outlet 7 are uniform porous channel, 13 of mixed gas outlet 7 and combustion chambers constitute burning short-flame road, make its mixed gas enter the combustion chamber fast and fully burn, to improve furnace temperature.

Service condition of the present utility model is, make carrier with body of wall outside the regenerator top of existing hotblast stove, ring body is adorned on the body of wall, owing in the ring body annulus road or spiral circuit are arranged, when the gas inlet of air through communicating with circuit enters in the circuit, along the progressively fully preheating of circuit quilt, mix mutually with the coal gas that enters from gas preheating pipeline and gas exit through upper air outlet again, enter the combustion chamber fast by mixed gas outlet, burn, because distance is very short between mixed gas outlet and combustion chamber, constitute short burnout, effectively guaranteed the fully burning fast that gas mixture is complete, improved furnace temperature greatly, and reduced pollution to ambient air, reduced the coke ratio value simultaneously, shortened the heat-up time of hotblast stove, prolonged the air-supply time, reduced ton iron cost, the regenerator space is big, increased the heat storage of every cubic metre of high heat size, after tested, the air preheating temperature raising reaches 400 ℃, and wind-warm syndrome improves 150-200 ℃, the output investment ratio same level reduces 30%, and regenerator all increases by 30% than Cowper stove volume and every cubic metre of blast furnace heating-surface area.

The utility model is the inventive improvements to existing burner, is the substitute products of Cowper stove, and it is applied, and huge economic and social benefit is arranged.

Claims

1, a kind of ring body multi-hole short flame burner, it is characterized in that being, ring body (10) is housed on the regenerator of hotblast stove (11) external wall of upper portion (8), air preheating ring road (2) and gas preheating circuit (4) are arranged in the ring body (10), the gas inlet pipe (1) that communicates with the preheating of air circuit is arranged at ring body (10) bottom, the gas entry pipe (3) that communicates with gas preheating circuit (4) is arranged at top, a plurality of airs (5) are arranged at preheating of air circuit (2) top, gas preheating circuit (4) inboard has a plurality of gas exits (6), gas exit (6) is connected with air (5), constitute end mixed gas outlet (7), and be connected with the combustion chamber (13) on regenerator (11) top.

2, a kind of ring body multi-hole short flame burner according to claim 1 is characterized in that, said circuit (2) is every being set to spirrillum or circular preheating of air pipeline by interlayer (9).

3, a kind of ring body multi-hole short flame burner according to claim 1 is characterized in that, the said air (5) that communicates with circuit (2), gas exit (6) and mixed gas outlet (7) are uniform porous channel.

4, a kind of ring body multi-hole short flame burner according to claim 1 is characterized in that, constitutes burning short-flame road between said mixed gas outlet (7) and combustion chamber (13).