CN219607117U - Heat accumulating type switching combustion equipment - Google Patents

Abstract

The utility model relates to a switching heat accumulating type combustion device, which comprises a hearth, a heat accumulating type burner, a smoke output cylinder and a combustion-supporting gas conveying pipeline, wherein the heat accumulating type burner comprises a burner and a heat accumulator, and the technical key points are as follows: each regenerative burner is distributed at intervals from top to bottom along a spiral path on the peripheral wall of the hearth, the height difference of two adjacent regenerative burners is equal, the phase included angle is equal, the radial interface of the corresponding burner is arranged on the peripheral wall of the hearth, the upper surface of the radial interface is provided with a right-angle-shaped regenerative chamber communicated with the radial interface, the right-angle-shaped regenerative chamber is filled with a heat accumulator, the outer end of the right-angle-shaped regenerative chamber is connected with a transition chamber, a combustion-supporting gas conveying pipeline is positioned in a smoke output cylinder, and the transition chamber is provided with a combustion-supporting gas inlet communicated with the combustion-supporting gas conveying pipeline and a smoke outlet communicated with the smoke output cylinder. The equipment solves the problem that the prior heat accumulating type combustion equipment is switched to have larger combustion blind areas, greatly reduces the combustion blind areas in the hearth and enhances the waste gas treatment effect.

Description

Heat accumulating type switching combustion equipment

Technical Field

The utility model relates to combustion equipment, in particular to switching heat accumulating type combustion equipment.

Background

The heat accumulating burning technology is one burning technology in high temperature and low oxygen air condition, and the heat accumulating burner may be used in incinerator to incinerate waste gas, heat metal blank, etc. When the device is used for treating the waste gas, the waste gas is burnt, oxidized and decomposed by combustion and then discharged to the outside, so that the pollution to the environment is reduced. At present, two groups of heat accumulating type burners are adopted for the heat accumulating type combustion equipment to recover the waste heat of high-temperature flue gas. One group of heat accumulating type burners is used for burning and releasing heat, and the other group of heat accumulating type burners is used for exhausting smoke and accumulating heat, and is switched at fixed time, and heat accumulating and releasing are alternated. See CN104456569a for a progressive switching regenerative burner apparatus comprising at least five regenerative burners connected to a furnace and a controller that can control the regenerative burners, the controller switching the regenerative burners at intervals for alternate use in combustion or for exhaust of smoke.

Each regenerative burner in the existing switching regenerative combustion equipment is distributed at intervals from top to bottom along the height direction of a hearth, and the following problems exist in the use process: 1. when the waste gas enters the hearth, as one part of the regenerative burner is used for exhausting smoke and the other part of the regenerative burner is used for burning, a larger burning dead zone exists, and one part of the waste gas is directly exhausted without burning after entering the hearth, so that the waste gas treatment effect is affected; 2. the combustion-supporting gas enters the hearth through the heat accumulator of the heat accumulating type burner, and the heat accumulator has a preheating function, but the preheating time is short.

Disclosure of Invention

The utility model aims to provide the switching heat accumulating type combustion equipment which is reasonable in structure and reliable in use, solves the problem that the existing switching heat accumulating type combustion equipment has larger combustion blind areas, greatly reduces the combustion blind areas in a hearth, enhances the waste gas treatment effect, prolongs the preheating path of combustion-supporting gas, ensures that the combustion-supporting gas enters the hearth at a high temperature state, and ensures the combustion effect.

The technical scheme of the utility model is as follows:

the utility model provides a switch heat accumulation formula combustion apparatus, includes furnace, locates a plurality of heat accumulation formula combustors on the furnace, locates the outside flue gas output section of thick bamboo of furnace and combustion-supporting gas delivery line, heat accumulation formula combustor includes nozzle and heat accumulator, and its technical essential is: each regenerative burner is distributed at intervals from top to bottom along a spiral path on the peripheral wall of a hearth, the height difference of two adjacent regenerative burners is equal, the phase included angle is equal, a radial interface corresponding to the burner and with the outer end closed is arranged on the peripheral wall of the hearth, the burner is inserted into the radial interface along the horizontal direction, the upper surface of the radial interface is provided with a right-angle-shaped heat accumulation chamber communicated with the radial interface, the heat accumulation body is filled in the right-angle-shaped heat accumulation chamber, the outer end of the right-angle-shaped heat accumulation chamber is connected with a transition chamber, a combustion-supporting gas conveying pipeline is positioned in a smoke output cylinder, the transition chamber is provided with a combustion-supporting gas inlet communicated with the combustion-supporting gas conveying pipeline and a smoke outlet communicated with the smoke output cylinder, the upper end of the smoke output cylinder is fixedly provided with a smoke exhaust fan, the lower end of the combustion-supporting gas conveying pipeline is led out of the lower end of the smoke output cylinder, and a blower is arranged.

In the above switching heat accumulating type combustion equipment, the combustion-supporting gas conveying pipeline and the flue gas output cylinder are concentrically arranged.

According to the heat accumulating type switching combustion equipment, the upper end of the hearth is capped, and the lower end of the hearth is provided with the horizontal air inlet.

According to the heat accumulating type switching combustion equipment, all heat accumulating type burners are divided into two working groups for alternately burning and exhausting smoke, two adjacent heat accumulating type burners are different in groups, a first linkage control valve is arranged at a combustion-supporting gas inlet of a transition chamber of the same group of heat accumulating type burners, and a second linkage control valve is arranged at a smoke outlet of the transition chamber of the same group of heat accumulating type burners.

According to the heat accumulating type switching combustion equipment, the support frame is arranged at the lower end of the smoke output cylinder, and the shell of the air blower is fixedly connected with the support frame.

The beneficial effects of the utility model are as follows:

1. because each regenerative burner is arranged at the peripheral wall of the hearth along a spiral path from top to bottom at intervals, the height difference of two adjacent regenerative burners is equal, the phase included angle is equal, one of the two adjacent regenerative burners is responsible for burning, the other is responsible for discharging smoke, the regenerative burners which are responsible for burning respectively reach uniform distribution in the height direction and the circumferential direction, the regenerative burners which are responsible for discharging smoke are uniformly distributed in the height direction and the circumferential direction respectively, the regenerative burners which are responsible for burning work groups uniformly burn in the waste gas rising process in the hearth, the problem that the prior switching regenerative combustion equipment has larger burning dead zone is solved, the burning dead zone in the hearth is greatly reduced, the waste gas treatment effect is enhanced, and the generated smoke is uniformly discharged to the smoke output cylinder.

2. The combustion-supporting gas, namely fresh air, enters the combustion-supporting gas conveying pipeline through the blower and is distributed to the transition chambers of all the heat accumulating type burners in the same group, then enters the corresponding heat accumulator through the transition chambers, and enters the hearth through the heat accumulator and the radial interface, thereby playing a role in combustion supporting. In the process, the combustion-supporting gas is preheated by utilizing the waste heat of the flue gas in the flue gas output cylinder when passing through the combustion-supporting gas conveying pipeline and is preheated again when passing through the heat accumulator, so that the preheating path of the combustion-supporting gas is prolonged, the combustion-supporting gas is ensured to enter the hearth at a high temperature, and the combustion effect is ensured.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the furnace of FIG. 1;

FIG. 3 is a top view of the furnace of FIG. 2;

fig. 4 is an enlarged view of a portion a in fig. 1.

In the figure: 1. the device comprises a hearth, a transition chamber, a right-angle type regenerator, a flue gas outlet, a combustion-supporting gas inlet, a burner, a radial interface, a horizontal inlet, a supporting frame, a blower, a combustion-supporting gas conveying pipeline, a flue gas output cylinder, a radial flue gas inlet, a radial branch pipe orifice, a flue gas fan, a second control valve and a first control valve.

Description of the embodiments

The utility model will be described in detail with reference to the drawings.

As shown in fig. 1 to 4, the switching regenerative combustion apparatus includes a furnace 1, 6 regenerative burners provided on the furnace 1, a flue gas output tube 13 provided outside the furnace 1, and a combustion-supporting gas delivery pipe 12. The regenerative burner comprises a burner 7 and a heat accumulator 4. The upper end of the hearth 1 is capped and is provided with an explosion-proof valve (omitted in the figure), and the lower end of the hearth is provided with a horizontal air inlet 9.

Wherein, each regenerative burner is arranged at intervals from top to bottom along a spiral path at the peripheral wall of the hearth 1, and the height difference of two adjacent regenerative burners is equal and the phase included angle is equal. The outer peripheral wall of the hearth 1 is provided with a radial interface 8 corresponding to the burner 7 and with a closed outer end, and the burner 7 is inserted into the radial interface 8 along the horizontal direction. The peripheral wall of the hearth 1 is provided with an igniter corresponding to the burner 7, which is omitted in the figure. The upper surface of the radial interface 8 is provided with a right-angle-shaped heat storage chamber 3 communicated with the radial interface, the heat storage body 4 is filled in the right-angle-shaped heat storage chamber 3, and the heat storage body 4 is formed by stacking spherical heat storage materials. The outer end of the right-angle regenerator 3 is connected with a transition chamber 2.

The combustion-supporting gas delivery pipe 12 is located in the flue gas delivery cylinder 13 and is arranged concentrically with the flue gas delivery cylinder 13. The transition chamber 2 is provided with a combustion-supporting gas inlet 6 communicated with a combustion-supporting gas conveying pipeline 12 and a flue gas outlet 5 communicated with a flue gas output cylinder 13. In this embodiment, the combustion-supporting gas delivery pipeline 12 is provided with a plurality of radial branch nozzles 15 that lead out the side wall of the flue gas output cylinder 13, and the radial branch nozzles 15 are connected with the corresponding combustion-supporting gas inlets 6 by flexible pipelines; the side wall of the flue gas output cylinder 13 is provided with a plurality of radial flue gas inlets 14, and the radial flue gas inlets 14 are connected with the corresponding flue gas outlets 5 by utilizing flexible pipelines.

The upper end of the smoke output cylinder 13 is fixedly provided with a smoke exhaust fan 16, the lower end of the smoke output cylinder is closed, and the lower end of the combustion-supporting gas conveying pipeline 12 is led out of the lower end of the smoke output cylinder 13 and is provided with a blower 11. The lower end of the flue gas output cylinder 13 is provided with a support frame 10, and the shell of the blower 11 is fixedly connected with the support frame 10.

All the regenerative burners are divided into two working groups for alternately burning and exhausting smoke, and two adjacent regenerative burners are in different groups. The combustion-supporting gas inlet 6 of the transition chamber 2 of the same group of heat accumulating type burners is provided with a linked first control valve 18, and the flue gas outlet 5 of the transition chamber 2 of the same group of heat accumulating type burners is provided with a linked second control valve 17. The first control valve 18 and the second control valve 17 of the same working group are not opened at the same time, i.e. open and closed. The first control valves 18 of the two working groups are alternately opened at intervals. In the embodiment, the first control valve 18 at the combustion-supporting gas inlet 6 of the first heat accumulating type burner, the third heat accumulating type burner and the fifth heat accumulating type burner from top to bottom is simultaneously opened for supporting combustion; at the same time, the second control valve 17 at the flue gas outlet 5 of the second, fourth and sixth regenerative burners from top to bottom is simultaneously opened for discharging flue gas and for accumulating heat of the corresponding heat accumulator 4. After a set interval time, the two working groups work interchangeably.

During operation, waste gas enters the hearth 1 through the horizontal air inlet 9 at the lower end of the hearth 1, is uniformly combusted through the heat accumulating type burner working group responsible for combustion, and generated smoke is uniformly discharged through the heat accumulating type burner working group responsible for smoke discharge. The combustion-supporting gas, namely fresh air, enters the combustion-supporting gas conveying pipeline 12 through the blower 11, is distributed to the transition chambers 2 of the heat accumulating type burners in the same group, enters the corresponding heat accumulator 3 through the transition chambers 2, and enters the hearth 1 through the heat accumulator 3 and the radial interface 8 to play a role in combustion supporting. In the process, the combustion-supporting gas is preheated by utilizing the waste heat of the flue gas in the flue gas output cylinder 13 when passing through the combustion-supporting gas conveying pipeline 12, and is preheated again when passing through the heat accumulator 3, so that the combustion effect is ensured.

The foregoing describes the embodiments of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to fall within the scope of the present utility model.

Claims (5)

1. The utility model provides a switch heat accumulation formula combustion apparatus, includes furnace, locates a plurality of heat accumulation formula combustors on the furnace, locates the outside flue gas output section of thick bamboo of furnace and combustion-supporting gas delivery line, heat accumulation formula combustor includes nozzle and heat accumulator, its characterized in that: each regenerative burner is distributed at intervals from top to bottom along a spiral path on the peripheral wall of a hearth, the height difference of two adjacent regenerative burners is equal, the phase included angle is equal, a radial interface corresponding to the burner and with the outer end closed is arranged on the peripheral wall of the hearth, the burner is inserted into the radial interface along the horizontal direction, the upper surface of the radial interface is provided with a right-angle-shaped heat accumulation chamber communicated with the radial interface, the heat accumulation body is filled in the right-angle-shaped heat accumulation chamber, the outer end of the right-angle-shaped heat accumulation chamber is connected with a transition chamber, a combustion-supporting gas conveying pipeline is positioned in a smoke output cylinder, the transition chamber is provided with a combustion-supporting gas inlet communicated with the combustion-supporting gas conveying pipeline and a smoke outlet communicated with the smoke output cylinder, the upper end of the smoke output cylinder is fixedly provided with a smoke exhaust fan, the lower end of the combustion-supporting gas conveying pipeline is led out of the lower end of the smoke output cylinder, and a blower is arranged.

2. The switched heat accumulating type combustion apparatus of claim 1, wherein: the combustion-supporting gas conveying pipeline and the flue gas output cylinder are concentrically arranged.

3. The switched heat accumulating type combustion apparatus of claim 1, wherein: the upper end of the hearth is capped, and the lower end of the hearth is provided with a horizontal air inlet.

4. The switched heat accumulating type combustion apparatus of claim 1, wherein: all the regenerative burners are divided into two working groups for alternately burning and exhausting smoke, two adjacent regenerative burners are in different groups, a first linkage control valve is arranged at a combustion-supporting gas inlet of a transition chamber of the same group of regenerative burners, and a second linkage control valve is arranged at a smoke outlet of the transition chamber of the same group of regenerative burners.

5. The switched heat accumulating type combustion apparatus of claim 1, wherein: the lower extreme of flue gas output section of thick bamboo is equipped with the support frame, the casing of air-blower is fixed with the support frame connection.