CN201476015U

CN201476015U - Oxygen burner

Info

Publication number: CN201476015U
Application number: CN2009201723483U
Authority: CN
Inventors: 陆守祥
Original assignee: HEFEI SIKE COMBUSTION PLANT CO Ltd
Current assignee: HEFEI SIKE COMBUSTION PLANT CO Ltd
Priority date: 2009-06-01
Filing date: 2009-06-01
Publication date: 2010-05-19
Anticipated expiration: 2019-06-01

Abstract

The utility model discloses a total-oxygen combustor, which comprises a second burner nozzle and a core gun, wherein the second burner nozzle is internally provided with an open combustion chamber; one end of the second burner nozzle is connected with a first burner nozzle provided with a cavity; the first burner nozzle is radially provided with an oxygen inlet communicated with the cavity; the core gun is internally provided with a natural gas channel along the axial line and arranged in the cavity of the first burner nozzle; one end of the core gun is connected to the end part of the first burner nozzle and the cavity of the first burner nozzle is closed by the end part; the other end of the core gun is provided with a spraying nozzle extending to the inside of the combustion chamber; the core gun at the spraying nozzle is provided with a ring flange through which the combustion chamber is separated from the cavity of the first burner nozzle; and the ring flange is provided with a plurality of oxygen spraying holes through which the cavity of the first burner nozzle is communicated with the combustion chamber along the circumferential direction. Compared with the traditional combustor taking the air as an oxygen source, the total-oxygen combustor has the characteristics of low energy consumption, less pollution to the environment and the like and can achieve the objects of low emission and less pollution.

Description

The all-oxygen combustion device

Technical field:

The utility model relates to a kind of industrial combustion gas burner, specifically a kind of all-oxygen combustion device.

Background technology:

Along with the big step development of modern industry, serious for environment damage, make countries in the world pay attention to day by day environment.The maximum sequelae that developed country's industrialization brings is " high material-consumption, high energy consumption and high pollution ".The consequence of " three height " has caused that the punishment of nature to the people---scarcity of resources and living environment worsen, and jeopardize human existence and sustainable development.Developing countries and regions has lost the possibility that repeats developed country's industrialization development course, so based on above reason, industrial combustion equipment---all-oxygen combustion is a kind of trend.So-called pure oxygen combustion technology is exactly to replace air with oxygen fully, forms the combustion system of oxygen-fuel.

Usually the needed oxygen of fuel combustion is directly by obtaining in the air, the existence of the nitrogen of duty gas about 79% has no benefit to combustion process in the combustion process of air and fuel, a large amount of nitrogen is heated on the one hand, and enter atmosphere reaching under hundreds of celsius temperatures, cause heat-energy losses, it accounts for 25%～35% of energy consumption; Nitrogen at high temperature generates NO, NO with oxygen reaction on the other hand ₂, N ₂(general designation NO such as O _x), cause environmental pollution.

In the past few decades, the level of the aspects such as design, melting control and combustion technology thereof of stove improves a lot, and makes that energy consumption reduces, the thermal efficiency improves, but the thermal efficiency of its burning still rests in 35%～45% scope.In addition, owing to smelt hot properties in the fusing production process, the form of smelting the furnace charge that drops in the fusing and be with semi open model adds in the stove, therefore, and restriction NO _xDischarge capacity in pernicious gas and dust is the target that people pursue always.So the energy-conservation and environmental protection of industrial furnace still need spend very big strength to do a large amount of work.

Summary of the invention:

For overcoming the defective of prior art, the purpose of this utility model is to provide a kind of all-oxygen combustion device, has characteristics such as energy consumption is low, environmental pollution is little with respect to existing with air as the burner of source of oxygen, can realize low emission, oligosaprobic target.

The utility model technical solution problem adopts following technical scheme:

The all-oxygen combustion device, described burner comprises:

One inside has second burner of open combustion chamber, and the one end can be permanently connected and have first burner of inner chamber, and described first burner radially offers the oxygen intake that communicates with its inner chamber;

One inside is provided with the core rifle in the first burner inner chamber be located at of natural gas passage along axis, one end of described core rifle is connected in the inner chamber sealing with first burner of the end of first burner and this end, the other end of core rifle has the nozzle that extends in the described combustion chamber, the core rifle at this nozzle place is provided with and the ring flange of described combustion chamber and the isolation of first nozzle chamber along the circumferential direction can be offered a plurality of oxygen spray holes that the first burner inner chamber is communicated with described combustion chamber on the described ring flange.

One end of described core rifle is threadedly connected to the end of described first burner by connector, and this end is the end away from first burner at place, nozzle place, and this end of first burner is airtight with the inner chamber of first burner.

Branch distributions such as circumferencial direction are pressed in described a plurality of oxygen sprays hole on described ring flange, the number of spray-hole is 3-8.

Compared with the prior art, the beneficial effects of the utility model are embodied in:

All-oxygen combustion device of the present utility model is a source of the gas with oxygen-natural gas, can carry out progressively oxygen and natural gas, disperse, mixed combustion equably, have that energy consumption is low, output is high, quality is good, environmental pollution is little, advantages of simple structure and simple, especially using all-oxygen combustion can make the nitrogen content in the toxic emission drop to 0.05% from 68.56%, and exhaust gas volumn drops to 8056 (Nm3/h) from 34356 (Nm3/h), has great importance to improving atmosphere pollution.

Description of drawings:

Fig. 1 is a structural representation of the present utility model; Fig. 2 is the structural representation of Fig. 1 SMIS rifle.

Number in the figure: 1 first burner, 11 inner chambers, 12 oxygen intakes, 2 second burners, 21 combustion chambers, 3 core rifles, 31 nozzles, 32 ring flanges, 33 oxygen spray holes, 34 natural gas passages, 4 connectors, 5 sealing rings, 6 igniters.

Below pass through the specific embodiment, and the utility model is described in further detail in conjunction with the accompanying drawings.

The specific embodiment, non-limiting examples is as described below:

Embodiment: referring to Fig. 1,2, the all-oxygen combustion device of present embodiment comprises:

Second burner 2 that is in the burner right-hand member, its inside has open combustion chamber 21, one end of second burner is by flange, bolt first burner 1 that can be permanently connected, this first burner has the inner chamber 11 of hollow, and radially offers the oxygen intake 12 that communicates with its inner chamber 11 on first burner;

Shown in Figure 2, burner also comprises: an inside is provided with the core rifle 3 of natural gas passage 34 along axis, the core rifle is laid in the inner chamber 11 of first burner, one end of this core rifle is connected in the end of first burner 1, and this end is with the inner chamber sealing of first burner, shown in Figure 1, the other end of core rifle has the nozzle 31 that extends in the second burner combustion chamber 21, on the core rifle 3 at this nozzle place, be provided with ring flange 32, the edge of this ring flange is tight against on the step surface of combustion chamber end, and the described combustion chamber 21 and first nozzle chamber 11 is isolated, it along the circumferential direction offers the oxygen spray hole 33 of a plurality of connection first burner inner chambers and combustion chamber on ring flange; According to actual needs, branch distributions such as circumferencial direction are pressed in a plurality of oxygen sprays hole on ring flange, and the number of spray-hole can be set to 3-8.

When specifically being provided with, an end of core rifle 3 is threadedly connected to the end of first burner 1 by connector 4, and this end is the end away from first burner at place, nozzle place, and this end of first burner is airtight with the inner chamber 11 of first burner.

Shown in Figure 1, be provided with sealing ring 5 in the junction of first burner and second burner, make between combustion chamber 21 and the inner chamber 11 that except being communicated with by spray-hole 33, its elsewhere does not communicate.

During use, natural gas is from the end input of core rifle 3, and be ejected in the combustion chamber 21 by nozzle 31 through the natural gas passage 34 of core rifle inside, oxygen inputs in the inner chamber 11 from the oxygen intake 12 that radially is opened on first burner simultaneously, oxygen spray hole on ring flange 32 33 ejections then, and in the combustion chamber at nozzle place, converge with natural gas, light by igniter 6, the flame temperature of combustion chamber ejection far above with air as the flame that source of oxygen was generated, and save the energy greatly, alleviate environmental pollution, because oxygen content about 21% in the air, and the content of nitrogen is about 79%, and in combustion process, an aerobic is participated in combustion reaction, nitrogen is as just diluent, a large amount of diluents has absorbed the heat that a large amount of combustion reactions is emitted, and drains from flue, causes significant waste.Burner application of the present utility model is selected liquid oxygen and small-sized oxygen generating plant in cell furnace, the cost of oxygen source supply is lower, can improve product, the quality of glass greatly.Burner of the present utility model also can be applicable to the iron and steel Annealing furnace, improves iron and steel production efficiency, reduces toxic emission.

Claims

1. Oxygen burner, is characterized in that, described burner comprises:

A second burner (2) with an open combustion chamber (21) inside, one end of which is fixedly connected to a first burner (1) with an inner cavity (11), the first burner is radially opened There is an oxygen inlet (12) communicating with its inner cavity;

A core gun (3) which is provided with a natural gas channel (34) along the axis in the cavity of the first burner, one end of the core gun is connected to the end of the first burner (1) and the end The inner cavity (11) of the first burner is closed, and the other end of the core gun has a nozzle (31) extending into the combustion chamber (21), and the core gun (3) at the nozzle is provided with a A flange (32) isolating the combustion cavity from the first nozzle cavity, and a plurality of flanges are provided along the circumferential direction to communicate the first burner cavity (11) with the combustion cavity (21). Oxygen injection holes (33).

2. The oxy-fuel burner according to claim 1, characterized in that, one end of the core gun (3) is threadedly connected to the end of the first burner (1) through a connector (4), the The end is the end away from the first burner where the nozzle (31) is located, and the end of the first burner seals the inner cavity of the first burner.

3. The oxy-fuel burner according to claim 1, characterized in that, the plurality of oxygen injection holes (33) are equally distributed in the circumferential direction on the flange (32), and the number of injection holes is 3-8 pieces.