Household garbage incineration flue gas deamination device

Abstract

The utility model discloses a household garbage incineration flue gas deamination device which comprises a deamination agent preparation tank, a deamination agent injection mechanism, an inlet flue and an outlet flue, and the deamination agent preparation tank is provided with an automatic feeding mechanism, a stirring mechanism and a feeding port. An outlet of the deamination agent preparation tank is connected with an inlet of the deamination agent injection mechanism through a pipeline and a conveying pump arranged on the pipeline, an outlet of the deamination agent injection mechanism extends into the inlet flue so as to inject a deamination agent onto household garbage incineration flue gas, and the flue gas subjected to deamination treatment is discharged from the outlet flue. The concentration condition of ammonia in the pollutants is fed back to the deamination device in real time, so that the input amount of the deamination agent is controlled, and the aim of purifying the flue gas is fulfilled.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of domestic waste incineration device, especially a kind of domestic waste incineration flue gas deamination device. BACKGROUND

[0002] The current waste incineration system can effectively treat nitrogen-containing gases such as NOx and N2O, achieving denitrification, but a large amount of byproduct ammonia gas is produced, forming ammonia escape, and high-concentration nitrogen-containing leachate is produced during fermentation pretreatment before waste incineration, which is applied to prepare lime slurry by semi-dry method deacidification, so that the deacidification process also produces ammonia escape.

[0003] Currently, environmental protection requirements are increasingly stringent, and the emission limit of nitrogen oxides (NOx) is becoming lower and lower. Many key areas require it to be reduced to 50 mg / m 3 In some areas, it must reach 35 mg / m 3 To meet this requirement, denitrification is needed, and the amount of denitrification agent (ammonia, ammonia water, urea, melamine and other nitrogen-containing substances) sprayed must be larger and larger, and the excess is becoming more and more serious. Ammonia escape and sulfate aerosol problems are becoming more and more serious. Further treatment of ammonia escape is imperative. SUMMARY

[0004] In order to overcome the defects of the prior art, the utility model provides a kind of domestic waste incineration flue gas deamination device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A kind of domestic waste incineration flue gas deamination device, including deamination agent preparation tank, deamination agent injection mechanism, inlet flue and outlet flue, automatic feeding mechanism, stirring mechanism and charging port are equipped on the deamination agent preparation tank, the outlet of deamination agent preparation tank is connected with the inlet of deamination agent injection mechanism by pipeline and conveying pump arranged on the pipeline, the outlet of deamination agent injection mechanism extends into inlet flue to spray deamination agent on domestic waste incineration flue gas, and flue gas after deamination treatment is discharged from outlet flue.

[0007] Further, the automatic feeding mechanism includes a grabbing arm and a drive motor, one end of the grabbing arm is provided with a grabbing finger, the other end is rotatably fixed to the top of the deamination agent preparation tank and provided with a belt wheel at this end, the output shaft of the drive motor is provided with a driving wheel, and the belt wheel and the driving wheel are connected by a belt to drive the rotation of the grabbing arm by the rotation of the drive motor so as to send the deamination agent grabbed by the grabbing finger into the charging port.

[0008] Further, the stirring mechanism includes a stirring motor, a stirring shaft and stirring blades, the upper end of the stirring shaft extends out of the deamination agent preparation tank and is connected to the stirring motor at the top, and the lower end of the stirring shaft is provided with stirring blades.

[0009] Further, the deaminating agent preparation tank is further provided with a liquid level meter and a thermometer.

[0010] Further, the two delivery pumps are arranged in parallel, and the inlet pipeline and the outlet pipeline of the delivery pumps are both provided with valves.

[0011] Further, the deaminating agent injection mechanism is arranged in at least two, and is uniformly distributed along the circumference of the inlet flue.

[0012] Further, the outlet flue is provided with an online ammonia detector.

[0013] Further, the deaminating agent preparation tank is further provided with a liquid level meter and a thermometer.

[0014] Compared with the prior art, the household garbage incineration flue gas deamination device has the following beneficial effects:

[0015] The online ammonia detector of the present application is connected to the pollutant monitoring system, and the ammonia concentration in the pollutant is fed back to the deamination device in real time, so as to control the input amount of the deaminating agent, achieve the purpose of flue gas purification, and the purified flue gas is discharged through the outlet flue. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the present application;

[0017] Figure 2 is Figure 1 is a sectional view of the inlet flue;

[0018] Figure 3 is Figure 1 is a structural schematic view of the deaminating agent preparation tank;

[0019] In the figure: 1, inlet flue; 2, outlet flue; 21, online ammonia detector; 3, deaminating agent injection mechanism; 41, first delivery pump; 42, second delivery pump; 5, deaminating agent preparation tank; 51, charging port; 52, stirring motor; 53, stirring shaft, 54, stirring blade; 55, liquid level meter, 56; thermometer; 57, blowdown valve; 6, automatic feeding mechanism; 61, gripping fingers; 62, gripping arm; 63, pulley; 64, driving pulley; 65, driving motor. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments.

[0021] A household garbage incineration flue gas deamination device, as Figures 1 to 3As shown, the system includes a deammoniation agent preparation tank 5, a deammoniation agent injection mechanism 3, an inlet flue 1, and an outlet flue 2. The deammoniation agent preparation tank 5 is equipped with an automatic feeding mechanism 6, a stirring mechanism, and a feeding port 51. The outlet of the deammoniation agent preparation tank 5 is connected to the inlet of the deammoniation agent injection mechanism 3 through a pipeline and a conveying pump installed on the pipeline. The outlet of the deammoniation agent injection mechanism 3 extends into the inlet flue 1 to spray the deammoniation agent onto the flue gas from the municipal solid waste incineration. The deammoniation-treated flue gas is discharged from the outlet flue 2.

[0022] The deammonia removal agent injection mechanism can use existing injection pumps.

[0023] In this embodiment, the automatic feeding mechanism includes a gripping arm 62 and a drive motor 65. One end of the gripping arm 62 is provided with gripping fingers 61, and the other end is rotatably fixed to the top of the deammonigenin preparation tank 5 and is provided with a pulley 63. The output shaft end of the drive motor 65 is provided with a drive wheel 64. The pulley 63 and the drive wheel 64 are connected by a belt so that the rotation of the drive motor 65 drives the rotation of the gripping arm 62, thereby feeding the deammonigenin gripped by the gripping fingers 61 into the feeding port 51.

[0024] In this embodiment, the stirring mechanism includes a stirring motor 52, a stirring shaft 53, and a stirring blade 54. The upper end of the stirring shaft 53 extends out of the deammoniation agent preparation tank 5 and is connected to the stirring motor 52 at its top. The lower end of the stirring shaft 53 is provided with a stirring blade 54.

[0025] In this embodiment, a level gauge 55 and a thermometer 56 are also provided on the side wall of the deammoniation agent preparation tank 1, and a drain pipe is provided at the bottom of the deammoniation agent preparation tank 1, with a drain valve 57 on the drain pipe.

[0026] In this embodiment, the delivery pumps are two units connected in parallel, namely the first delivery pump 41 and the second delivery pump 42. Valves are provided on the inlet pipes, outlet pipes and main pipes of the first delivery pump 41 and the second delivery pump 42.

[0027] In this embodiment, as Figure 3 As shown, two deammoniation agent injection mechanisms 3 are provided. The cross-section of the inlet flue 1 is square, and the two deammoniation agent injection mechanisms 3 are arranged opposite each other at the two vertices of the inlet flue 1.

[0028] In this embodiment, an online ammonia detector 21 is installed on the outlet flue 2. The online ammonia detector 21 is connected to the pollutant monitoring system and provides real-time feedback to the ammonia removal device based on the concentration of ammonia in the pollutants, thereby controlling the amount of ammonia removal agent added to achieve the purpose of flue gas purification. The purified flue gas is discharged through the outlet flue 2.

[0029] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for removing ammonia from flue gas from municipal solid waste incineration, characterized in that, The device comprises a deaminating agent preparation tank, a deaminating agent injection mechanism, an inlet flue and an outlet flue, the deaminating agent preparation tank is provided with an automatic feeding mechanism, a stirring mechanism and a feeding opening, the outlet of the deaminating agent preparation tank is connected with the inlet of the deaminating agent injection mechanism through a pipeline and a conveying pump arranged on the pipeline, the outlet of the deaminating agent injection mechanism extends into the inlet flue so as to inject the deaminating agent on the household garbage incineration flue gas, and the flue gas after deamination treatment is discharged from the outlet flue.

2. The apparatus according to claim 1, wherein The automatic feeding mechanism comprises a grabbing arm and a driving motor, one end of the grabbing arm is provided with a grabbing finger, the other end is rotatably fixed on the top of the deaminating agent preparation tank and is provided with a belt wheel, the output shaft end of the driving motor is provided with a driving wheel, and the belt wheel and the driving wheel are connected through a belt so as to drive the rotation of the grabbing arm through the rotation of the driving motor, thereby sending the deaminating agent grabbed by the grabbing finger into the feeding opening.

3. The apparatus for removing ammonia from waste incineration flue gas according to claim 1, wherein The stirring mechanism comprises a stirring motor, a stirring shaft and stirring blades, the upper end of the stirring shaft extends out of the deaminating agent preparation tank and is connected with the stirring motor at the top, and the lower end of the stirring shaft is provided with the stirring blades.

4. The apparatus according to claim 1, wherein The deaminating agent preparation tank is further provided with a liquid level meter and a thermometer.

5. The apparatus for removing ammonia from waste incineration flue gas according to claim 1, wherein The conveying pump is in parallel connection, and the inlet pipeline and the outlet pipeline of the conveying pump are provided with valves.

6. The apparatus according to claim 1, wherein The deaminating agent injection mechanism is at least provided with two, which are uniformly distributed along the circumference of the inlet flue.

7. The apparatus according to claim 1, wherein The outlet flue is provided with an online ammonia detector.

8. The apparatus according to claim 1, wherein The deaminating agent preparation tank is provided with a blowdown pipeline, and the blowdown pipeline is provided with a blowdown valve.

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