Multi-air-chamber arrangement structure for circulating fluidized bed reactor

Abstract

The utility model discloses a multi-air-chamber arrangement structure for a circulating fluidized bed reactor, which comprises a multi-air-chamber structure and an air blower connected with the multi-air-chamber structure. The multi-air-chamber structure comprises a first air chamber, a second air chamber, a third air chamber, a fourth air chamber and a fifth air chamber which are sequentially connected from left to right in the transverse direction, and air caps are arranged at the tops of the first air chamber, the second air chamber, the third air chamber, the fourth air chamber and the fifth air chamber and used for guiding and optimizing the flowing path of air entering the air chambers. The bottoms of the first air chamber, the second air chamber, the third air chamber, the fourth air chamber and the fifth air chamber are respectively connected with an air pipe; an air inlet is formed in the top of each air chamber and close to the air cap, and air chamber pressure measuring points are arranged in each air chamber and close to the air cap and the air inlet. According to the utility model, each air chamber can be independently controlled, the air volume and pressure of each air chamber can be accurately controlled, and different combustion and reaction temperature requirements and operation conditions can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to circulating fluidized bed reactor technical field especially relates to a kind of multi-wind chamber arrangement structure for circulating fluidized bed reactor. BACKGROUND

[0002] Circulating fluidized bed reactor is a kind of high-efficiency, energy-saving chemical equipment, is widely used in industrial production and power generation, especially in coal-fired power station, waste treatment and biomass energy conversion and other fields.For coal-fired power station, its efficient combustion characteristics help coal energy efficient conversion into electric energy;When waste treatment, can make solid waste fully react and decompose in fluidized environment, realize reduction, harmlessness and resource utilization;In biomass energy conversion, promote biomass raw material stable and efficient conversion into clean bioenergy.This reactor uses gas (usually air) to pass through solid particle bed at high speed, so that particles are in fluidized state, thereby realizing efficient mixing, reaction and heat transfer.

[0003] One of the key technologies of circulating fluidized bed reactor is the design of wind chamber, and the traditional design has significant defects, and the wind chamber structure is often single, which leads to uneven airflow distribution, affecting the distribution of temperature and reaction gas. Under the interference of uneven airflow, reaction gas is also difficult to diffuse uniformly, and often gathers in a specific area, causing uneven mixing of materials, reducing reaction efficiency and combustion completeness. This uneven situation makes fuel unable to burn completely, energy consumption rises, unburned components increases, and pollution emissions intensifies, such as particulate matter, sulfur dioxide, nitrogen oxides and other pollutants exceeding standard emissions, which harms the environment and public health, reduces equipment service life, increases operation and maintenance costs, and restricts the green and sustainable development of the industry. And in the existing patent, such as patent application number CN117346137A discloses a circulating fluidized bed boiler and its operation method for eliminating bed pressure fluctuation, which discloses wind chambers, furnaces and ignition air ducts that are interconnected, a coal feeding port is provided on the furnace, and a plurality of wind chamber partitions are provided in the wind chamber, which are used to separate the wind chamber into a plurality of sub-wind chambers along the air inlet. As can be seen, the prior art has a multi-wind chamber structure, but the sub-wind chambers lack independent control systems, which makes it difficult for the prior art to accurately control the air volume and pressure of each wind chamber, and it is difficult to meet different combustion and reaction temperature requirements and operating conditions. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides a multi-wind chamber arrangement structure for circulating fluidized bed reactor, the first wind chamber, the second wind chamber, the third wind chamber, the fourth wind chamber and the fifth wind chamber are connected with the air blower through the air pipe, each wind chamber can be independently controlled, the air volume and pressure of each wind chamber are accurately controlled, and different combustion and reaction temperature requirements and operating conditions are met.

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

[0006] A multi-wind chamber arrangement for a circulating fluidized bed reactor, comprising: a multi-wind chamber structure and a blower, wherein the multi-wind chamber structure is connected with the blower;

[0007] The multi-wind chamber structure comprises a first wind chamber, a second wind chamber, a third wind chamber, a fourth wind chamber and a fifth wind chamber connected in sequence from left to right in the transverse direction, and the top of each of the first wind chamber, the second wind chamber, the third wind chamber, the fourth wind chamber and the fifth wind chamber is provided with a wind cap for guiding and optimizing the air flow path into the wind chamber; the bottom of each of the first wind chamber, the second wind chamber, the third wind chamber, the fourth wind chamber and the fifth wind chamber is connected with a wind pipe; the top of each wind chamber is provided with an air inlet near the wind cap position, and a wind chamber pressure measuring point is arranged near the wind cap and the air inlet in each wind chamber.

[0008] As a further technical solution, the first wind chamber, the second wind chamber, the third wind chamber, the fourth wind chamber and the fifth wind chamber are independent of each other, and each wind chamber is separated by a wind chamber partition.

[0009] As a further technical solution, one end of each wind pipe is connected with the corresponding wind chamber, and the other end of each wind pipe is connected with the blower.

[0010] As a further technical solution, the wind pipe is a dual-function wind pipe with adjusting function and isolating function.

[0011] As a further technical solution, an adjustable wind pipe valve is assembled on the wind pipe for controlling the air intake.

[0012] As a further technical solution, the top of each of the first wind chamber, the second wind chamber, the third wind chamber, the fourth wind chamber and the fifth wind chamber is provided with a plurality of wind caps, and each wind cap is connected with and communicates with the corresponding wind chamber.

[0013] As a further technical solution, the wind cap comprises a cap rod and a cap top, wherein the cap top is assembled on the cap rod, and the cap rod communicates with the inside of the corresponding wind chamber.

[0014] As a further technical solution, the cap top is a semicircular structure, and the length of the cap rod of the wind cap on the first wind chamber, the second wind chamber, the third wind chamber, the fourth wind chamber and the fifth wind chamber decreases in sequence.

[0015] As a further technical solution, the inside of each wind cap is a hollow structure, and air holes are formed on the cap top.

[0016] As a further technical solution, the first wind chamber, the second wind chamber, the third wind chamber, the fourth wind chamber and the fifth wind chamber have the same structure, which is a tapered structure with a wide top and a narrow bottom.

[0017] The one or more technical solutions of the utility model have the following beneficial effects:

[0018] (1) The first air chamber, the second air chamber, the third air chamber, the fourth air chamber and the fifth air chamber are connected with the air blower through the air pipe, and the adjustable air pipe valve is assembled on the air pipe, the air chambers can be controlled independently, the air pressure of each air chamber is controlled independently, the air volume and the pressure of each air chamber are accurately controlled, different combustion and reaction temperature requirements and operation conditions are adapted, the airflow of each region is fully mixed, the temperature is uniform, local overheating or low-temperature dead angle is prevented, fuel is completely combusted, heat release is stable and efficient, energy utilization efficiency is significantly improved, and energy consumption and operation cost are reduced.

[0019] (2) The multiple air chambers are linearly arranged and connected with the efficient air blower, the adjustable valve and the air chamber pressure measuring point are combined, and independent airflow control between the air chambers can be realized. The design not only improves the controllability and flexibility of combustion, but also helps to adjust the airflow according to actual needs, optimize the combustion process, improve the thermal efficiency, reduce fuel consumption and emissions under different operation conditions. The multiple air chamber arrangement structure in the utility model improves the combustion efficiency, enhances the safety and response speed of the whole structure, and provides a new solution for the development of modern industrial reactor technology. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings accompanying the specification form a part of the utility model and serve to provide further understanding of the utility model. The schematic embodiments of the utility model and the description thereof serve to explain the utility model, and do not constitute an improper limitation on the utility model.

[0021] Figure 1 It is a structural schematic view of the multiple air chamber arrangement structure for the circulating fluidized bed reactor of the utility model;

[0022] Figure 2 It is a three-view of the multiple air chamber arrangement structure for the circulating fluidized bed reactor of the utility model;

[0023] Wherein: 1, the first air chamber; 2, the second air chamber; 3, the third air chamber; 4, the fourth air chamber; 5, the fifth air chamber; 6, the air chamber partition; 7, the double-function air pipe; 8, the air pipe valve; 9, the air blower; 10, the air cap; 11, the air chamber pressure measuring point; 12, the bed layer pressure measuring point. DETAILED DESCRIPTION

[0024] It should be pointed out that the following detailed description is exemplary and aims to provide further description of the utility model. Unless otherwise specified, all technical and scientific terms used in the utility model have the same meaning as that generally understood by the ordinary skilled person in the technical field to which the utility model belongs.

[0025] Example 1

[0026] like Figure 1 As shown, this utility model provides a multi-chamber arrangement structure for a circulating fluidized bed reactor, including: a multi-chamber structure and a blower 9, wherein the multi-chamber structure is connected to the blower 9. In this embodiment, the multi-chamber structure consists of five sub-chambers, specifically including a first chamber 1, a second chamber 2, a third chamber 3, a fourth chamber 4, and a fifth chamber 5 connected horizontally from left to right. In this embodiment, the first chamber 1, the second chamber 2, the third chamber 3, the fourth chamber 4, and the fifth chamber 5 are independent of each other, and each chamber is separated by a chamber partition 6. Each of the five chambers has independent control. The system, comprising five air chambers (1, 2, 3, 4, and 5), is equipped with ducts at their bottoms. One end of each duct connects to its corresponding air chamber, and the other end connects to a blower. In this embodiment, adjustable duct valves 8 are fitted to the ducts to control the air intake. Furthermore, the ducts are dual-function ducts 7, with both adjustment and isolation functions. The adjustment function precisely controls the airflow and pressure in each air chamber, while the isolation function isolates the airflow when needed, enhancing system safety and response speed. In this embodiment, the duct valves 8 of each air chamber can be independently adjusted according to the reactor load and fuel type to adapt to different operational requirements. For example, when a high airflow load is required, the airflow in a specific air chamber can be increased to ensure sufficient oxygen for combustion, while at low loads, the airflow can be reduced accordingly to avoid excess air and energy waste.

[0027] In this embodiment, as Figure 1As shown, the top of the first air chamber 1, the second air chamber 2, the third air chamber 3, the fourth air chamber 4 and the fifth air chamber 5 is provided with a wind cap 10 for guiding and optimizing the air flow path into the air chamber, specifically, in this embodiment, the top of the first air chamber 1, the second air chamber 2, the third air chamber 3, the fourth air chamber 4 and the fifth air chamber 5 is provided with a plurality of wind caps 10, and each wind cap 10 is connected with and communicates with the corresponding air chamber, the inside of the wind cap 10 is a hollow structure, wherein the wind cap 10 comprises a cap rod and a cap top, wherein the cap top is assembled on the cap rod, and the cap rod communicates with the inside of the corresponding air chamber, and the cap top is a semicircular structure, the length of the cap rod of the wind cap 10 on the first air chamber 1, the second air chamber 2, the third air chamber 3, the fourth air chamber 4 and the fifth air chamber 5 decreases in turn, the wind cap 10 with different lengths meets the needs of the bed surface inclined arrangement. And a gas hole is opened on the cap top. As can be seen, the design of each air chamber of the utility model also considers the air flow dynamics from the air chamber to the combustion zone, by accurately controlling the structure of the wind cap 10 and the air pipe, the distribution and flow direction of the inlet air are optimized, and the uniform combustion of the fuel and the best fluidization effect are ensured. In addition, in this embodiment, the top of each air chamber is provided with an air inlet near the position of the wind cap, and an air chamber pressure measuring point 11 is arranged beside the air inlet in each air chamber to measure the static pressure of the air chamber, and in this embodiment, a bed layer pressure measuring point 12 is arranged 500mm above the wind cap, through the air chamber pressure measuring point 11 and the bed layer pressure measuring point 12 in the air chamber, the operator can monitor and adjust the running state of the reactor in real time, and respond to the rapidly changing combustion conditions. In this embodiment, as shown in the figure, Figure 2 As shown, the first air chamber, the second air chamber, the third air chamber, the fourth air chamber and the fifth air chamber have the same structure, which is a tapered structure with a wide top and a narrow bottom, facilitating the convergence and uniform expansion of multiple air flows. According to the above structure of the utility model, by linearly arranging a plurality of air chambers with the same structure and connecting them with high-efficiency blowers, combined with adjustable air pipe valve control and air chamber pressure measuring points, independent air flow control can be achieved between each air chamber. This design not only improves the controllability and flexibility of combustion, but also helps to adjust the air flow according to actual needs under different operating conditions, optimize the combustion process, improve thermal efficiency, reduce fuel consumption and emissions. In addition, it can effectively control the flow and residence time of particles in the bed layer, further optimizing the reaction control product generation. This multi-air chamber arrangement structure not only improves the combustion efficiency, but also enhances the safety and response speed of the entire structure, providing a new solution for the development of modern industrial reactor technology.

[0028] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A multi-wind chamber arrangement for a circulating fluidized bed reactor, characterized in that, The application relates to a multi-wind-chamber structure and a blower, wherein the multi-wind-chamber structure is connected with the blower. The multi-wind-chamber structure comprises a first wind chamber, a second wind chamber, a third wind chamber, a fourth wind chamber and a fifth wind chamber which are sequentially connected from left to right in the transverse direction, and the top of each of the first wind chamber, the second wind chamber, the third wind chamber, the fourth wind chamber and the fifth wind chamber is provided with a wind cap for guiding and optimizing the air flow path into the wind chamber; the bottom of each of the first wind chamber, the second wind chamber, the third wind chamber, the fourth wind chamber and the fifth wind chamber is connected with a wind pipe; the top of each wind chamber is provided with an air inlet close to the wind cap, and a wind chamber pressure measuring point is arranged close to the wind cap and the air inlet in each wind chamber. The first wind chamber, the second wind chamber, the third wind chamber, the fourth wind chamber and the fifth wind chamber are independent of each other, and each wind chamber is separated by a wind chamber partition plate.

2. A multi-wind chamber arrangement for a circulating fluidized bed reactor according to claim 1, characterized in that, One end of each wind pipe is connected with a corresponding wind chamber, and the other end of each wind pipe is connected with the blower.

3. A multi-wind chamber arrangement for a circulating fluidized bed reactor according to claim 1, characterized in that, The wind pipe is a dual-function wind pipe with adjusting function and isolating function.

4. A multi-windbox arrangement for a circulating fluidized bed reactor according to claim 3, characterized in that, An adjustable wind pipe valve is arranged on the wind pipe for controlling the air intake.

5. A multi-windbox arrangement for a circulating fluidized bed reactor according to claim 4, characterized in that, The top of each of the first wind chamber, the second wind chamber, the third wind chamber, the fourth wind chamber and the fifth wind chamber is provided with a plurality of wind caps, and each wind cap is connected with and communicates with a corresponding wind chamber.

6. A multi-windbox arrangement for a circulating fluidized bed reactor according to claim 1, characterized in that, The wind cap comprises a cap rod and a cap top, wherein the cap top is arranged on the cap rod, and the cap rod communicates with the inside of a corresponding wind chamber.

7. A multi-windbox arrangement for a circulating fluidized bed reactor according to claim 6, characterized in that, The cap top is a semicircular structure, and the length of the cap rod of the wind cap on the first wind chamber, the second wind chamber, the third wind chamber, the fourth wind chamber and the fifth wind chamber decreases in sequence.

8. A multi-windbox arrangement for a circulating fluidized bed reactor according to claim 7, characterized in that, The inside of each wind cap is a hollow structure, and the cap top is provided with air holes.

9. A multi-windbox arrangement for a circulating fluidized bed reactor according to claim 7, characterized in that, The first wind chamber, the second wind chamber, the third wind chamber, the fourth wind chamber and the fifth wind chamber have the same structure and are all conical structures which are wide at the top and narrow at the bottom.

10. A multi-windbox arrangement for a circulating fluidized bed reactor according to claim 1, characterized in that, ​

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