CN217503621U

CN217503621U - Denitration boiler with preheating device

Info

Publication number: CN217503621U
Application number: CN202220845455.3U
Authority: CN
Inventors: 李燕青; 李梦奇; 王西峰; 韩红港; 李瑞娟
Original assignee: Taikang Zhongtai Boiler Co ltd
Current assignee: Taikang Zhongtai Boiler Co ltd
Priority date: 2022-04-13
Filing date: 2022-04-13
Publication date: 2022-09-27
Anticipated expiration: 2032-04-13

Abstract

The utility model discloses a denitration boiler with preheating device, including denitration boiler, denitration boiler top is connected with the recovery trachea, the recovery trachea communicates to the preheating cabinet, be equipped with recovery air cavity and steam chamber respectively in the preheating cabinet, be equipped with pressure sensor on the recovery air cavity inner wall, recovery air cavity bottom is equipped with the gas vent, steam chamber top is equipped with temperature sensor, be equipped with level sensor on the steam chamber inner wall, steam chamber bottom is equipped with the heating pipe, steam chamber one side is connected with the steam exhaust pipe, the steam exhaust pipe communicates to denitration boiler, through being equipped with the preheating cabinet, before adding the raw materials, releases steam through the heating pipe work, carries out preheating treatment to denitration boiler in advance, and after raw materials or reductant put into the boiler, the boiler temperature can not reduce, through preheating in advance, so great reduction reaction time, and the reaction can be more complete or complete, the raw materials are saved, and the production efficiency is improved.

Description

Denitration boiler with preheating device

Technical Field

The utility model belongs to the technical field of the boiler, especially, relate to a denitration boiler with preheating device.

Background

One denitration method in the prior art is as follows: the selective non-catalytic reduction (SNCR) method is adopted for denitration by adopting the SNCR method, the reducing agent is the largest consumable (but the consumption of the catalyst is more for SCR denitration), and the cement denitration generally adopts urea or ammonia water (liquid ammonia-dangerous goods are not selected) as the reducing agent.

The existing denitration boiler directly puts raw materials into the boiler without pretreatment, and the boiler can reduce the temperature of the boiler and cannot preheat in advance when some raw materials or reducing agents are put into the boiler, so that the reaction time is greatly prolonged, incomplete reaction or insufficient reaction can be caused, raw materials are wasted, and the production efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

For solving the problem that exists among the prior art, the utility model provides a denitration boiler with preheating device through being equipped with the preheating cabinet, before adding the raw materials, through heating pipe work release steam, carries out preheating to denitration boiler in advance, and after raw materials or reductant were put into the boiler, boiler temperature can not reduce, through preheating in advance, like this great reduction reaction time to can let the reaction more abundant or more complete, saved the raw materials, improved production efficiency.

In order to achieve the above object, the utility model provides a following technical scheme: a denitration boiler with a preheating device comprises a denitration boiler, wherein the top of the denitration boiler is connected with a recovery air pipe, one end of the recovery air pipe is provided with an air valve, the recovery air pipe is communicated with a preheating tank, the bottom of one side of the preheating tank is connected with a water pipe II, the water pipe II is communicated with a water pump, one side of the water pump is connected with a water pipe I, the water pipe I is communicated with a water tank, a recovery air cavity and a steam cavity are respectively arranged in the preheating tank, a heat preservation layer is arranged in the recovery air cavity, the inner wall of the recovery air cavity is provided with a pressure sensor, the bottom of the recovery air cavity is provided with an air outlet, the air outlet is communicated with the steam cavity, the top of the steam cavity is provided with a temperature sensor, the inner wall of the steam cavity is provided with a liquid level sensor, the bottom of the steam cavity is provided with a heating pipe, one side of the steam cavity is connected with a steam exhaust pipe, and one end of the air outlet and the steam exhaust pipe are provided with air valves, the steam exhaust pipe communicates to denitration boiler, also be equipped with the heat preservation in the steam exhaust pipe, through being equipped with the preheating cabinet, before adding the raw materials, through heating pipe work release steam, carry out preheating treatment to denitration boiler in advance, after raw materials or reductant are put into the boiler, boiler temperature can not reduce, through preheating in advance, so great reduction reaction time to can let the reaction more abundant or more complete, save the raw materials, improve production efficiency.

Compared with the prior art, the beneficial effects of the utility model are that: through being equipped with the preheating cabinet, before adding the raw materials, release steam through heating pipe work, carry out preheating treatment to the denitration boiler in advance, after raw materials or reductant are put into the boiler, boiler temperature can not reduce, through preheating in advance, great reduction reaction time like this, and can let the reaction more abundant or more complete, the raw materials has been saved simultaneously, and the production efficiency is improved, through being equipped with the recovery air chamber, high-temperature steam can recycle in the denitration boiler, be used for preheating when the reaction next time, the resource is saved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic top view of the present invention.

In the figure: the denitration system comprises a denitration boiler 1, a preheating box 2, an air inlet pipe 3, a steam cavity 4, a recovery air cavity 5, a water pump 6, a water tank 7, a water pipe I8, a water pipe II 9, a heat preservation layer 10, a pressure sensor 11, an exhaust port 12, a temperature sensor 13, a liquid level sensor 14, a heating pipe 15, a steam exhaust pipe 16 and an air valve 17.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example (b):

referring to the attached drawings 1-2, a denitration boiler with a preheating device comprises a denitration boiler 1, wherein the top of the denitration boiler 1 is connected with a recovery air pipe 3, one end of the recovery air pipe 3 is provided with an air valve 17, the recovery air pipe 3 is communicated with a preheating box 2, the bottom of one side of the preheating box 2 is connected with a water pipe two 9, the water pipe two 9 is communicated with a water pump 6, one side of the water pump 6 is connected with a water pipe one 8, the water pipe one 8 is communicated with a water tank 7, the preheating box 2 is respectively provided with a recovery air cavity 5 and a steam cavity 4, a heat preservation layer 10 is arranged in the recovery air cavity 5, the inner wall of the recovery air cavity 5 is provided with a pressure sensor 11, the bottom of the recovery air cavity 5 is provided with an exhaust port 12, the exhaust port 12 is communicated with the steam cavity 4, the top of the steam cavity 4 is provided with a temperature sensor 13, and the inner wall of the steam cavity (4) is provided with a liquid level sensor (14), the denitration boiler is characterized in that a heating pipe (15) is arranged at the bottom of the steam cavity (4), a steam exhaust pipe (16) is connected to one side of the steam cavity (4), air valves (17) are arranged at one ends of the exhaust port (12) and the steam exhaust pipe (16), the steam exhaust pipe (16) is communicated to the denitration boiler (1), a heat insulation layer (10) is arranged in the steam exhaust pipe (16), and through the preheating box (2), steam is released through the heating pipe (15) during working before raw materials are added, so that the denitration boiler (1) is preheated in advance, after the raw materials or reducing agents are put into the boiler, the temperature of the boiler cannot be reduced, and through preheating in advance, the reaction time is greatly shortened, the reaction can be more sufficient or complete, the raw materials are saved, and the production efficiency is improved.

When in use: before the denitration boiler 1 works, the preheating box 2 is arranged, before raw materials are added, the water pump 6 is opened to inject water into the steam cavity 4, the liquid level sensor 14 is arranged in the steam cavity 4 to prevent too much water from flowing, the temperature sensor 13 is arranged at the top in the steam cavity 4 to control the preheating temperature, steam is released through the heating pipe 15 in the steam cavity 4 in a working mode, the air valve 17 at one end of the steam exhaust pipe 16 is opened to preheat the denitration boiler 1 in advance, the temperature of the boiler cannot be reduced after the raw materials or reducing agents are placed into the boiler, the reaction time is greatly reduced through preheating in advance, the reaction is more sufficient or complete, the raw materials are saved, the production efficiency is improved, the recovery gas is opened through the recovery gas pipe 5, the air valve 17 at one end of the recovery gas pipe 5 is arranged to recycle the high-temperature steam in the denitration boiler 1 for preheating in the next time, resources are saved.

Having shown and described the basic principles and principal features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.

Claims

1. The utility model provides a denitration boiler with preheating device, includes denitration boiler (1), denitration boiler (1) top is connected with recovery trachea (3), recovery trachea (3) one end is equipped with pneumatic valve (17), recovery trachea (3) communicate to preheating cabinet (2), preheating cabinet (2) one side bottom is connected with water pipe two (9), water pipe two (9) communicate to water pump (6), water pump (6) one side is connected with water pipe one (8), water pipe one (8) communicate to water tank (7), its characterized in that: the preheating chamber is characterized in that a recovery air cavity (5) and a steam cavity (4) are respectively arranged in the preheating chamber (2), a heat preservation layer (10) is arranged in the recovery air cavity (5), a pressure sensor (11) is arranged on the inner wall of the recovery air cavity (5), an exhaust port (12) is arranged at the bottom of the recovery air cavity (5), the exhaust port (12) is communicated with the steam cavity (4), a temperature sensor (13) is arranged at the top of the steam cavity (4), a liquid level sensor (14) is arranged on the inner wall of the steam cavity (4), a heating pipe (15) is arranged at the bottom of the steam cavity (4), a steam exhaust pipe (16) is connected to one side of the steam cavity (4), and the steam exhaust pipe (16) is communicated to the denitration boiler (1).

2. The denitration boiler with a preheating device according to claim 1, characterized in that: and air valves (17) are arranged at one ends of the exhaust port (12) and the steam exhaust pipe (16).

3. The denitration boiler with a preheating device according to claim 2, characterized in that: and a heat-insulating layer (10) is also arranged in the steam exhaust pipe (16).

4. The denitration boiler with a preheating device according to claim 1, characterized in that: and a steam exhaust pipe (16) at one side of the steam cavity (4) is positioned above the liquid level sensor (14).