Dust and nitrate integrated device

Abstract

The utility model provides a dust and nitrate integrated device which comprises a flue gas inlet and dust removal bags, an ash bucket is arranged below the dust removal bags, the ash bucket is provided with an ash discharge valve, a flue gas outlet and the dust removal bags form a dust removal bag array, and a gas guide plate is arranged in the dust removal bag array; a gas blowing pipe is arranged above the dust removal bag array, is connected with an electromagnetic pulser and is provided with a gas inlet; an airflow uniform distribution module and a plurality of denitration layers are arranged on the right side of the dust removal bag array, and the denitration layers comprise a working denitration layer and a rotatable standby denitration layer; the occupied area is reduced through integrated integration, and the flue gas conveying energy consumption is reduced; an airflow guide plate and pulse back-blowing deashing are adopted, so that the resistance fluctuation of the filter bag is reduced, and the dust removal rate is stable; due to the uniform airflow distribution design, the uniformity of flue gas at the inlet of the denitration module is improved, the denitration layer is flexibly adjusted, the denitration efficiency is improved, and large load fluctuation can be adapted; real-time sensing regulation reduces the operation cost, avoids the problems of catalyst blockage by dust, non-uniform distribution of a denitration agent and the like, and ensures long-term stable operation of the system.

Description

Technical Field

[0001] This utility model relates to the field of flue gas purification and treatment, and in particular to an integrated dust and nitrification device. Background Technology

[0002] Industrial flue gas (such as flue gas emitted from industries like power generation, steel, cement, and waste incineration) typically contains large amounts of dust and nitrogen oxides (NOx). X Iodine (primarily NO and NO2) is one of the main sources of air pollution. Current flue gas treatment technologies suffer from several drawbacks: Traditional flue gas treatment uses a separate series of dust removal and denitrification equipment, which presents the following significant problems: equipment is dispersed, resulting in high energy consumption and costs; dust removal (e.g., bag filters, electrostatic precipitators) and denitrification (e.g., SCR, SNCR) equipment are independently arranged, requiring long pipeline connections, leading to significant pressure losses during flue gas transport, large land area requirements, and high infrastructure investment; poor adaptability to flue gas parameter fluctuations, as industrial flue gas loads often fluctuate, making it difficult for traditional denitrification equipment to flexibly adjust the reaction area, resulting in excessive waste of denitrification agent at low loads and inadequate treatment at high loads; simultaneously, uneven distribution of flue gas after dust removal leads to insufficient localized reactions in the denitrification module, resulting in high NO levels. X The removal efficiency fluctuates greatly; the lack of synergy limits efficiency; the design of separate equipment lacks synergy. For example, uneven atomization of the denitrifying agent can lead to localized corrosion or by-product deposition, which in turn affects the lifespan of the equipment. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an integrated dust and nitrogen oxide device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An integrated dust and nitrogen removal device includes a flue gas inlet, several dust collection bags, an ash hopper below the dust collection bag array, an ash discharge valve in the ash hopper, and a flue gas outlet. The device is characterized in that: the several dust collection bags form a dust collection bag array, and a gas guide plate is provided in the dust collection bag array; a gas jet pipe is provided above the dust collection bag array, the gas jet pipe is connected to an electromagnetic pulse generator, and a gas inlet is provided on the gas jet pipe; an airflow distribution module and several nitrogen removal layers are provided on the right side of the dust collection bag array, the nitrogen removal layers including a working nitrogen removal layer and a rotatable standby nitrogen removal layer.

[0006] Furthermore, the flue gas inlet is equipped with an inlet gas sensor and an inlet temperature sensor; the flue gas outlet is equipped with an outlet gas sensor and an outlet temperature sensor, which facilitates real-time monitoring of the pollutant concentration and temperature of the raw flue gas, providing preliminary data for subsequent module control (such as predicting the dust collector bag's tolerance status and adjusting the denitrification agent dosage); the sensor at the flue gas outlet can detect the indicators of the treated flue gas in real time. If the outlet pollutants exceed the standard or the temperature is abnormal, the electronic pulse jet pipe can be adjusted immediately to clean the dust collector bag and reserve the denitrification layer contact area, ensuring stable and compliant treatment results while avoiding excessive energy consumption. This improves the accuracy of system control and ensures long-term stable compliance with environmental emission requirements.

[0007] Furthermore, the denitrification layer is provided with a denitrification agent inlet and outlet, and a flow guide plate is provided at the denitrification agent inlet to facilitate uniform distribution of the denitrification agent and uniform reaction with the flue gas when liquid denitrification agent is used.

[0008] Furthermore, the denitrification layer has two to four layers: one working denitrification layer and several backup denitrification layers. The backup denitrification layers can be rotated and controlled to participate in the denitrification work area according to actual needs.

[0009] Furthermore, the denitrification agent can be a liquid denitrification agent urea solution sprayed from the denitrification agent inlet, or a solid denitrification agent vanadium-titanium honeycomb denitrification agent or plate denitrification agent.

[0010] Furthermore, the dust collection bag is made of glass fiber or metal fiber.

[0011] Furthermore, the dust collection bags are provided in quantities of 100 to 120.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] (1) By integrating dust removal, denitrification and auxiliary modules, the equipment footprint is reduced and the energy consumption of flue gas transportation is reduced.

[0014] (2) The dust removal process uses airflow guide plates and pulse backflushing to reduce filter bag resistance fluctuations and stabilize dust removal rate.

[0015] (3) The uniform airflow design improves the uniformity of flue gas at the inlet of the denitrification module. Combined with the flexible adjustment of the working and standby denitrification layers, the denitrification efficiency is improved and can be adapted to larger load fluctuations.

[0016] (4) Real-time sensing and control enables on-demand adjustment of dust removal, air volume and denitrification agent, reducing operating costs, while avoiding problems such as dust clogging the catalyst and uneven distribution of denitrification agent, ensuring long-term stable operation of the system. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the device structure according to Embodiment 1 of this utility model;

[0018] Labeling Explanation: 1-Flue gas inlet, 11-Inlet gas sensor, 12-Inlet temperature sensor, 13-Outlet gas sensor, 14-Outlet temperature sensor, 15-Flue gas outlet, 2-Dust collector bag, 21-Gas guide plate, 3-Ash hopper, 31-Ash discharge valve, 41-Pulse jet pipe, 42-Electronic pulse generator, 43-Gas inlet, 5-Airflow distribution module, 61-Working denitrification layer, 62-Spare denitrification layer, 63-Guide grid, 64-Denitrification agent inlet, 65-Denitrification agent outlet. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0021] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0022] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0023] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments. Example

[0025] An integrated dust and nitrogen removal device includes a flue gas inlet 1, several dust collection bags, a dust hopper 3 below the dust collection bag array, a dust discharge valve 31 in the dust hopper, and a flue gas outlet 15. The device is characterized by: several dust collection bags 2 forming a dust collection bag array, with a gas guide plate 21 in the dust collection bag array; a gas jet pipe 42 above the dust collection bag array, connected to an electromagnetic pulse generator 41, with a gas inlet 43 on top; and an airflow distribution module 5 and several nitrogen removal layers on the right side of the dust collection bag array, the nitrogen removal layers including a working nitrogen removal layer 61 and a rotatable spare nitrogen removal layer 62.

[0026] The gas jet pipe 42 blows the flue gas after dust removal toward the airflow distribution module. At the same time, together with the electronic pulse generator, it can also form high-pressure gas to purge the dust collection bag, clean the dust deposited on the surface, and reduce the resistance fluctuation of the dust collection bag. The airflow distribution module 5 ensures that the flue gas is evenly distributed when it enters the denitrification layer and can react evenly with the denitrification agent.

[0027] Furthermore, the flue gas inlet is equipped with an inlet gas sensor 11 and an inlet temperature sensor 12; the flue gas outlet is equipped with an outlet gas sensor 13 and an outlet temperature sensor 14, which facilitates real-time monitoring of the pollutant concentration and temperature of the raw flue gas, providing preliminary data for subsequent module control (such as predicting the dust collector bag's tolerance status and adjusting the denitrification agent dosage); the sensors at the flue gas outlet can detect the indicators of the treated flue gas in real time. If the outlet pollutants exceed the standard or the temperature is abnormal, the electronic pulse jet pipe can be adjusted immediately to clean the dust collector bag and reserve the denitrification layer contact area, ensuring stable and compliant treatment results while avoiding excessive energy consumption. This improves the accuracy of system control and ensures long-term stable compliance with environmental emission requirements.

[0028] Furthermore, the denitrification layer is provided with a denitrification agent inlet 64 and an outlet 65. A flow guide plate 63 is provided at the denitrification agent inlet. The flow guide plate ensures that the denitrification agent evenly covers the denitrification layer and that the denitrification agent reacts evenly with the flue gas.

[0029] Furthermore, the denitrification layer is provided with two working denitrification layers 61 and a rotatable standby denitrification layer 62. The standby denitrification layer can be rotated and controlled to participate in the denitrification work area according to actual needs.

[0030] Furthermore, the denitrification agent is a liquid denitrification agent urea solution sprayed from the denitrification agent inlet. The solution enters the denitrification layer through the guide grid plate, is evenly distributed in the denitrification layer, and comes into uniform contact with the flue gas, thereby ensuring that the denitrification reaction is complete.

[0031] Furthermore, the dust collection bags are made of glass fiber filter bags.

[0032] Furthermore, there are 120 dust bags.

[0033] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A dust collection and nitrification integrated device, comprising a flue gas inlet (1), a plurality of dust collection bags, an ash hopper (3) located below the dust collection bag array, the ash hopper being equipped with an ash discharge valve (31), and a flue gas outlet (15), characterized in that: A number of dust collection bags (2) form a dust collection bag array, and a gas guide plate (21) is provided in the dust collection bag array; a gas jet pipe (42) is provided above the dust collection bag array, the gas jet pipe is connected to an electromagnetic pulse generator (41), and a gas inlet (43) is provided on the upper part; an airflow distribution module (5) and several denitrification layers are provided on the right side of the dust collection bag array, the denitrification layers include a working denitrification layer (61) and a rotatable standby denitrification layer (62).

2. The integrated dust and nitrogen oxide system as described in claim 1, characterized in that: The flue gas inlet is equipped with an inlet gas sensor (11) and an inlet temperature sensor (12); the flue gas outlet is equipped with an outlet gas sensor (13) and an outlet temperature sensor (14).

3. The integrated dust and nitrogen oxide system as described in claim 1, characterized in that: The denitrification layer is provided with a denitrification agent inlet (64) and an outlet (65), and a flow guide plate (63) is provided at the denitrification agent inlet.

4. The integrated dust and nitrogen oxide system as described in claim 1, characterized in that: The denitrification layer has at least two layers and at most four layers.

5. The integrated dust and nitrogen oxide system as described in claim 3, characterized in that: The denitrification agent can be a liquid denitrification agent urea solution sprayed from the denitrification agent inlet, or a solid denitrification agent vanadium-titanium honeycomb denitrification agent or plate denitrification agent.

6. The integrated dust and nitrogen oxide system as described in claim 1, characterized in that: The dust collection bag is made of glass fiber filter bag or metal fiber filter bag.

7. The integrated dust and nitrogen oxide system as described in claim 1, characterized in that: The dust collection bags are provided in quantities of 100 to 120.

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