CN1793727A

CN1793727A - Gas mixed burner with three-way

Info

Publication number: CN1793727A
Application number: CN 200610017320
Authority: CN
Inventors: 刘世聚; 周福辰; 张德松; 黄丙乾; 范建超; 刘浩磊
Original assignee: ZHENGZHOU YUXING REFRACTORY MATERIAL CO Ltd
Current assignee: ZHENGZHOU YUXING REFRACTORY MATERIAL CO Ltd
Priority date: 2006-01-09
Filing date: 2006-01-09
Publication date: 2006-06-28

Abstract

The invention is a three-gas mixed burner. And blast-furnace gas circuit, combustion supporting air circuit and coke-oven gas circuit, which are formed by isolation of furnace walls and inner walls, are arranged at the bottom of the burner, flow guide columns are in the center of the circuit; furnace walls and inner isolating walls compose blast-furnace gas channel, combustion supporting air channel and coke-oven gas channel, which are radiation in shape and staggered mutually, the blast-furnace gas channel communicates with the blast-furnace gas circuit, the combustion supporting air channel communicates with the combustion support air circuit, the coke-oven gas channel communicates with the coke-oven gas circuit, three channels at the upper part of the furnace wall are provided with annular channels communicating with them, and the annular channels are equipped with communicating sector jet holes. The advantages are full combustion, high thermal value, low CO content, low cost.

Description

Three kinds of gas mixing burners

One, technical field

The present invention relates to three kinds of gas mixing burners that the smelting iron and steel blast funnace hot blast stove is used.

Two, background technology

Along with China's sustained and rapid development of economy, steel production in China has had very big development, but see with regard to present circumstances, the product steel quality of China also can not show a candle to developed country, its fundamental cause is that the wind-warm syndrome of steel-making blast furnace is low and causes, and improves the wind-warm syndrome of steel-making blast furnace, is that ceramic burner decides, therefore, improve furnace temperature, just must reform, and mostly the burner that uses at present is the mixing arrangement of two kinds of gases ceramic burner, such burner is because structural unreasonable, furnace temperature is low, makes steel of poor qualityly, can not satisfy in the rapid economic development needs to the high-quality iron and steel, therefore, high wind furnace is imperative with the innovation of burner.

Three, summary of the invention

Actual needs at above-mentioned situation and smelting high-quality steel, the present invention's purpose just provides three kinds of gas mixing burners that a kind of blast funnace hot blast stove is used, can effectively improve furnace temperature, solve the problem that causes the steel quality difference in the smelting iron and steel because of furnace temperature is low, the technical scheme of its solution is, this burner is that the bottom constitutes the blast furnace gas circuit by furnace wall and interior wall every putting, combustion air circuit and coke-stove gas circuit, there is diversion column at the circuit center, constitute radial blast furnace gas passage between furnace wall and internal partition wall, combustion air passage and coke-stove gas passage, the interlaced arrangement of each passage, the blast furnace gas passage communicates with the blast furnace gas circuit, the combustion air passage communicates with the combustion air circuit, the coke-stove gas passage communicates with the coke-stove gas circuit, the circular passage that is connected with three passages is equipped with at three in furnace wall top above the passage, the fan-shaped squit hole of connection is housed above the circular passage, structure uniqueness of the present invention, novel, sufficient combustion, the calorific value height, gas mixes, CO content is low, hot-blast stove temperature raising speed is fast, send into the wind-warm syndrome height of blast furnace, the steel product quality of producing good (high-quality), cost is low, and significantly reduced pollution to environment, collect energy-conservation, environmental protection has the wide development application prospect in one.

Four, description of drawings

Fig. 1 is sectional front view of the present invention (among Fig. 2 A-A to).

Fig. 2 for E-E among Fig. 1 of the present invention to cross sectional plan view.

Fig. 3 for B-B among Fig. 2 of the present invention to sectional front view.

Fig. 4 be among Fig. 3 C-C to sectional front view.

Fig. 5 be among Fig. 1 D-D to cross sectional plan view.

Five, the specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated.

Provide by Fig. 1-5, the present invention is every being set to blast furnace gas circuit 1 by furnace wall 12 and interior wall 13, combustion air circuit 2 and coke-stove gas circuit 3, there is diversion column 8 at the circuit center, 7 of furnace wall 12 and internal partition walls constitute radial blast furnace gas passage 4, combustion air passage 5 and coke-stove gas passage 6, the interlaced arrangement of each passage, blast furnace gas passage 4 communicates with blast furnace gas circuit 1, combustion air passage 5 communicates with combustion air circuit 2, coke-stove gas passage 6 communicates with coke-stove gas circuit 3, the circular passage 10 that is connected with three passages is equipped with at three in furnace wall top above the passage, the fan-shaped squit hole 11 of connection is housed above the circular passage 10.

In order to guarantee result of use, insert fire-resistant casting material 9 in said blast furnace gas passage 4, combustion air passage 5 and the coke-stove gas passage 6, it is taken the form of inclined plane with corresponding blast furnace gas circuit 1, combustion air circuit 2 and coke-stove gas circuit 3 respectively be connected.

Operating position of the present invention is, when blast furnace gas, combustion air and the coke-stove gas circuit by separately enters in the burner, and the passage through communicating with each circuit enters in the circular passage on top again, fully mix, gas after mixing sprays through fan-shaped squit hole, make it completing combustion, reach the purpose of smelting.

By said structure as can be seen, the present invention has adopted blast furnace gas, combustion air and coke-stove gas, changed general blast furnace and be the coal gas that self produces and the mode of combustion air mixed combustion, on former basis, increased coke-stove gas again, increased flammable raw material, improved furnace temperature greatly, owing to adopted unique three circuits and three-channel version, gas has obtained evenly mixing fully, sufficient combustion, thermal efficiency height, the energy utilization rate height, can improve more than furnace temperature 100-200 ℃ than traditional blast furnace after tested, satisfy the needs of smelting high-quality steel high temperature more than 1820 ℃ fully, and CO content is very low in the gas of discharging, does not have the black smoke phenomenon fully, has improved the pollution problem of traditional blast furnace to air ambient greatly, because the abundant burning of fuel, improved the utilization rate of heat energy, effectively saved the energy, according to test, energy-conservation reaching more than 30%, because under high temperature and the abundant oxygen, guaranteed the complete oxidation reduction reaction of iron ore in blast furnace, smelting speed is fast, the efficient height, thereby improved smelting output, can be up to more than 20%, and produce the steel of high-quality.

Therefore, of the present invention succeeding in developing is to existing creationary innovation of ceramic burner and improvement, through on probation, obtained gratifying effect, and it is applied, and must make huge creative contribution for iron and steel production, and DEVELOPMENT PROSPECT is boundless.

Claims

1, a kind of three kinds of gas mixing burners, it is characterized in that being, by furnace wall (12) and interior wall (13) every being set to blast furnace gas circuit (1), combustion air circuit (2) and coke-stove gas circuit (3), there is diversion column (8) at the circuit center, constitute radial blast furnace gas passage (4) between furnace wall (12) and internal partition wall (7), combustion air passage (5) and coke-stove gas passage (6), the interlaced arrangement of each passage, blast furnace gas passage (4) communicates with blast furnace gas circuit (1), combustion air passage (5) communicates with combustion air circuit (2), coke-stove gas passage (6) communicates with coke-stove gas circuit (3), the circular passage (10) that is connected with three passages is equipped with at three in furnace wall top above the passage, the fan-shaped squit hole (11) of connection is housed above circular passage (10).

2, three kinds of gas mixing burners according to claim 1, it is characterized in that, insert fire-resistant casting material (9) in said blast furnace gas passage (4), combustion air passage (5) and the coke-stove gas passage (6), it is taken the form of inclined plane with corresponding blast furnace gas circuit (1), combustion air circuit (2) and coke-stove gas circuit (3) respectively be connected.