CN218972674U

CN218972674U - Spraying device for improving incinerator efficiency

Info

Publication number: CN218972674U
Application number: CN202320058879.XU
Authority: CN
Inventors: 陈国强; 吴江; 盛国洪
Original assignee: HANGZHOU JINJIANG GROUP CO Ltd
Current assignee: HANGZHOU JINJIANG GROUP CO Ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-05-05
Anticipated expiration: 2033-01-09

Abstract

The utility model discloses a spraying device for improving the efficiency of an incinerator, which comprises a water storage tank and is characterized in that: the water storage tank is connected with the filter through the water outlet valve, the filter is at least connected with two paths in parallel in the water delivery line, and then is connected with the spray gun through the booster pump, and the spray gun is fixed on the furnace wall below the minimum section part of the high-temperature area of the incinerator hearth or is input into the junction of the flue and the hearth; the booster pump is connected with a temperature controller, and the temperature controller is connected with a temperature sensor probe. The spraying system with low investment, easy control, constant pressure and constant quantity and low running cost is configured, so that higher steam yield is obtained by using fuel with the same quality, the separation efficiency and effect of the separator are improved, and the device has practical values of safety, energy conservation and synergy for incinerator technology.

Description

Spraying device for improving incinerator efficiency

Technical Field

The utility model relates to incinerator technology, in particular to a spraying device for improving the incinerator efficiency.

Background

The operation of a waste incinerator is affected by numerous factors, instability of the incineration process will lead to the production of large amounts of new harmful substances, and therefore efforts are made to ensure and maintain: clean combustion of refuse requires that the temperature of the entire furnace be controlled within a certain range and that the temperature of the entire furnace be in a steady state. In the prior art, the influence of the smoke component change caused by the moisture change of the garbage on the radiation heat exchange is small, and the temperature variable of a hearth is generally used as the controlled quantity in the prior art, but the furnace efficiency is basically designed on the structure of a furnace body in the aspect of improving the furnace efficiency.

The utility model provides a patent publication number is CN106247613A, an energy efficiency promotes formula boiler, including furnace body, inlet pipe, hearth unit and jacket layer, has a plurality of communicating pipes that the interval set up in the furnace body, and communicating pipe link up with the inside of jacket respectively, and this kind of structure improves heat transfer efficiency through increasing heat transfer area. For another example, the patent publication number is CN110056877B, and the incinerator for improving the incineration effect comprises a furnace body and a first receiving plate arranged in the furnace body, wherein a feed inlet is arranged at the top of the furnace body, a first sealing door matched with the feed inlet is arranged at the top of the furnace body, a first connecting block is arranged on the first sealing door, and the first connecting block is movably connected at the top of the furnace body; the inner wall of the furnace body is provided with a second stop block with a triangular structure, the second stop block is arranged below the feeding hole, and two sides of the second stop block are respectively provided with a mincing assembly. According to the scheme, the effect of uniformly distributing the garbage entering the furnace body is achieved through the mutual cooperation of the second stop block and the crushing assembly, the situation that the garbage at the bottom cannot be contacted with flame is avoided, and the garbage can be combusted more fully. Etc.

However, the structural change involves a plurality of inherent elements, such as occupied internal volume of the hearth, redesigned connection scheme of the furnace body and the matched facilities, and the like, so that the maintenance cost is greatly increased, and the actual heat source release utilization rate in the hearth is not ideal.

Disclosure of Invention

The utility model aims to solve the problems and provide a spraying device for improving the efficiency of an incinerator, which improves the convective heat exchange of each heat exchange device area such as a water-cooled wall, a superheater, an air preheater and the like and increases the steam yield of a boiler by changing the humidity of flue gas in a combustion area and the whole combustion process.

The technical problems of the utility model are mainly solved by the following technical proposal: the utility model provides a promote atomizer of incinerator efficiency, includes water storage tank, its characterized in that: the water storage tank is connected with the filter through the water outlet valve, the filter is at least connected with two paths in parallel in the water delivery line, and then is connected with the spray gun through the booster pump, and the spray gun is fixed on the furnace wall below the minimum section part of the high-temperature area of the incinerator hearth or is input into the junction of the flue and the hearth; the booster pump is connected with a temperature controller, and the temperature controller is connected with a temperature sensor probe.

In the foregoing spraying device for improving the efficiency of the incinerator, preferably, the spraying gun is provided with a detachable atomizing sheet.

In the foregoing spraying device for improving the efficiency of the incinerator, preferably, the temperature sensor probe connected to the temperature controller is disposed in an outlet flue of the incinerator or a return discharge port of the return feeder.

In the spraying device for improving the efficiency of the incinerator, preferably, the inlet end and the outlet end of the filter are respectively provided with a valve.

In the foregoing spraying device for improving the efficiency of the incinerator, preferably, the spraying gun is connected with the booster pump through a metal hose.

In the foregoing spraying device for improving the efficiency of the incinerator, preferably, the spraying gun is a high-temperature resistant nozzle.

In the foregoing spraying device for improving the efficiency of the incinerator, preferably, the spraying gun is disposed at a junction of the input flue and the hearth, and the spraying outlet faces the direction of the reverse smoke.

In the spraying device for improving the efficiency of the incinerator, preferably, the water storage tank is provided with a tap water receiving port, or/and a fixed row of boilers, a connecting row of boilers, or/and a drain tank receiving port.

In the foregoing spraying device for improving the efficiency of the incinerator, preferably, the water storage tank is provided with a sludge valve and an air vent.

The temperature of the whole hearth is controlled within a certain range, and the temperature of the whole hearth is in a stable state, which is the most forward operating state of the incinerator in the industry. In fact, the temperatures of all points in the hearth are different, dry flue gas is taken as the main material, and in the whole combustion process, the gas with high temperature has relatively small specific gravity due to large temperature difference and can be discharged out of the hearth preferentially under the action of negative pressure after heat exchange, so that the heat exchange is insufficient.

The device is provided with a spraying system aiming at the phenomenon. The spray gun comprises a water storage tank, and valves are arranged on all functional parts between the water storage tank and the spray gun so as to facilitate maintenance. The filter is connected with at least two paths in parallel in the water delivery line, so that not only is effective filtration of water, especially circulating water ensured, but also normal operation can not be influenced if any path fails to perform maintenance.

The spray gun is provided constant pressure, constant water pressure and water yield by the booster pump, and the booster pump is controlled by the temperature controller, and the temperature controller is connected with temperature sensor probe, and the setpoint of temperature sensor probe has two kinds: the method is characterized in that the method comprises the steps of firstly, an outlet flue of an incinerator in a grate furnace, and secondly, a return feeder of a fluidized furnace returns to a discharge port, wherein the two parts are the best performance data that the hearth temperature is controlled within a certain range and the whole hearth temperature is in a stable state.

The atomizing sheet on the spray gun is of a detachable structure, and the aperture of the atomizing sheet is used for controlling the atomizing degree and carrying out shrinkage cavity adjustment because the constant pressure is kept all the time in practical application, so that the atomizing degree sprayed into a hearth is consistent and the quantity is constant.

Regarding the setting of the spray points, the requirements are that the flue gas humidity is increased, the convection effect is improved, the normal combustion of the boiler cannot be influenced, and the environmental protection is also considered to limit the temperature technology of the outlet of the hearth. For the grate furnace, the lower part of the minimum part of the cross section of the furnace chamber is the optimal point, and according to the fluid tapering principle, the flow speed is the fastest at the minimum part of the cross section under the same negative pressure of the furnace chamber, the smoke density is the largest, and the mixing degree is the best. If the fire grate is arranged, a certain distance exists from the fire grate, and because the hot smoke moves upwards all the time, the hearth is negative pressure, the mixed smoke after water atomization can pass through the small section part upwards rapidly, and then heat exchange is carried out with a large number of water cooling walls around the fire grate, and the normal combustion of the fire grate is not influenced. For the fluidized bed furnace, the junction of the hearth and the horizontal flue is optimal, the negative pressure is large, the flow speed is high, and the spray is performed in the reverse smoke direction, so that the mixing effect is ensured, and the outlet smoke temperature is not influenced.

The water adopted by the device is tap water, namely four kinds of water, or water in fixed rows, continuous rows and other supporting facilities of the boiler, and has no side effects such as corrosiveness to the heating surface of the boiler and the like.

Compared with the prior art, the utility model has the beneficial effects that: the spraying system with low investment, easy control, constant pressure and constant quantity and low running cost is configured, so that higher steam yield is obtained by using fuel with the same quality, the separation efficiency and effect of the separator are improved, and the device has practical values of safety, energy conservation and synergy for incinerator technology.

Drawings

Fig. 1 is a schematic view of a spray device according to the present utility model.

Fig. 2 is a diagram of an operational access of a temperature controller according to the present utility model.

Fig. 3 is a control diagram of the booster pump of the present utility model.

Fig. 4 is a schematic view of an application state structure of the present utility model.

In the figure: 1. the device comprises a water storage tank, a water outlet valve, a filter, a valve, a booster pump, a spray gun, an incinerator, a temperature controller and a temperature sensor probe.

Detailed Description

The technical scheme of the utility model is further specifically described below through examples and with reference to the accompanying drawings.

Referring to fig. 1 to 3, the top of a water storage tank 1 is provided with a liquid inlet, an access door and an air vent, a liquid level gauge is arranged on the water storage tank 1, a mud discharging valve and a water outlet valve 2 are arranged at the bottom of the water storage tank 1, the water storage tank 1 is connected to a filter 3 through the water outlet valve 2, the filter 3 is connected with two paths in parallel in a water delivery line, and valves 4 are arranged at the inlet end and the outlet end of the two filters 3.

The water storage tank 1 is connected with the boiler fixed row and the boiler connected row, is also connected with the drain tank, and is provided with a tap water receiving port for supplementing water.

The booster pump 5 is connected to the spray gun 6 through a metal hose, and the spray gun 6 is a high-temperature resistant nozzle. The embodiment adopts a mechanical atomization mode for connection, and adopts a screw pump to mechanically atomize, and the dosage is more than 12Kg/cm ² Is directly regulated by the oil mist gun.

The fixed point of the spray gun 6 is arranged on the furnace wall of the furnace 7 at a position 30cm below the minimum section part of the high temperature area of the hearth of the furnace for the grate furnace; for the fluidized bed, the spray outlet is oriented in the direction of the reverse smoke, and is fixed on the pipe wall at the junction of the input flue and the hearth.

The booster pump 5 is connected with a temperature controller 8, and the temperature controller 8 is connected with a temperature sensor probe 9. The arrangement of the temperature sensor probe 9 is as follows: the grate furnace is arranged in an outlet flue of the incinerator 7; the fluidized bed is arranged at the position of a return discharge hole of the return feeder.

The spray gun 6 is provided with a detachable atomizing sheet, and the atomizing granularity is preferably less than or equal to 6 mu m.

Working principle and application:

when the incinerator is normally combusted, water mist is uniformly sprayed into a high-temperature area of the hearth so as to change the humidity in smoke in the hearth, the humidity can quickly fill the whole hearth, the hot and humid smoke not only increases the instant pressure in the hearth and excites the latent heat of vaporization and convection heat exchange, but also increases the heat exchange degree of the areas such as a water cooling wall, a superheater, an economizer and an air preheater in the whole combustion process in the original combustion time, the phenomenon of poor fluidity of dry smoke is overcome, and the heat exchange effect and the steam yield of a boiler are improved.

The sprayed water mist quantity is based on that the smoke temperature at the outlet of the incinerator is more than or equal to 900 ℃ or the returning charge temperature is not reduced.

For the fire grate furnace, the water mist spraying point is positioned 30cm below the minimum position of the cross section of the hearth, the outlet smoke temperature is set at 920 ℃, and the operation of the booster pump 5 is controlled through the temperature controller 8. The fire grate furnace with the screen type superheater is subjected to adjustment and injection on the basis that the smoke temperature at the outlet of the incinerator 7 is more than or equal to 900 ℃.

For the fluidized bed, the sprayed water mist quantity takes the returning temperature not to drop as a control point, namely the temperature of the returning device is in normal degree in the operation state of the hearth, and the spraying quantity is reasonable.

The above embodiments are not intended to limit the present utility model, for example, the water forming the water mist is mainly tap water, or the boiler fixed row, the boiler continuous row, the hydrophobic tank, etc. are connected to the water storage tank 1 for use, so long as the water amount is sufficient, one or more combinations of the above water sources are optional, etc., and any simple transformed structure of the present utility model is within the scope of the present utility model.

Claims

1. The utility model provides a promote atomizer of incinerator efficiency, includes water storage tank (1), its characterized in that: the water storage tank is connected to the filter (3) through the water outlet valve (2), the filter is at least connected with two paths in parallel in the water delivery line, and then is connected to the spray gun (6) through the booster pump (5), and the spray gun is fixed on the furnace wall below the minimum section part of the high-temperature area of the hearth of the incinerator (7), or is input into the junction of the flue and the hearth; the booster pump is connected with a temperature controller (8), and the temperature controller is connected with a temperature sensor probe (9).

2. A spraying device for improving the efficiency of an incinerator according to claim 1, wherein the spraying gun (6) is provided with a detachable atomizing sheet.

3. The spraying device for improving the efficiency of the incinerator according to claim 1, wherein a temperature sensor probe (9) connected with the temperature controller (8) is arranged at an outlet flue of the incinerator (7) or a return discharge port of a return feeder.

4. The spraying device for improving the efficiency of the incinerator according to claim 1, wherein valves (4) are arranged at the inlet end and the outlet end of the filter (3).

5. A spraying device for improving the efficiency of an incinerator according to claim 1, wherein the spraying gun (6) is connected with the booster pump (5) through a metal hose.

6. A spraying device for improving the efficiency of an incinerator according to claim 1 or 2, characterized in that the spray gun (6) is a high temperature resistant spray head.

7. A spraying device for improving the efficiency of an incinerator according to claim 1 or 2, characterized in that the spraying gun (6) is arranged at the junction of the input flue and the hearth, and the spraying outlet is towards the reverse smoke direction.

8. The spraying device for improving the efficiency of the incinerator according to claim 1, wherein the water storage tank (1) is provided with a tap water receiving port, or/and a boiler fixed row, a boiler connected row water receiving port, or/and a drain tank water receiving port.

9. A spraying device for improving the efficiency of an incinerator according to claim 1 or 8, wherein the water storage tank (1) is provided with a mud valve and a ventilation opening.