Micro-power negative-pressure desulfurizing agent conveying system

Abstract

The invention discloses a micro-power negative-pressure desulfurizer conveying system which comprises a surge bin, an accelerating chamber and an air compression device. The surge bin and the compressed air device are respectively communicated with the accelerating chamber through pipelines, a weighing module is arranged outside the surge bin and is used for quantitatively supplying a desulfurizing agent, and a variable-frequency feeder is arranged on a communicating pipeline of the surge bin and the accelerating chamber. A compressed air valve group is arranged on a communicating pipeline of the compressed air device and the accelerating chamber; and the weighing module adopts a weight sensor. And the outlet end of the accelerating chamber is communicated with the dry desulfurization tower. The system is simple in structure, reasonable in design, good in performance and not prone to blockage, the desulfurizing agent conveying efficiency is improved, the sustainability of production is guaranteed, the production efficiency is improved, and the stability of flue gas emission indexes is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of powder conveying technology, specifically relating to a micro-power negative pressure conveying system for desulfurizing agents. Background Technology

[0002] In existing flue gas desulfurization processes, desulfurizing agents are typically transported in the following ways: First, positive pressure pneumatic conveying: using a high-pressure Roots blower or air compressor to provide power, the desulfurizing agent is blown into the reactor through pipelines. Disadvantages include high energy consumption, bulky equipment, high noise levels, severe pipeline wear, susceptibility to blockages, and high sealing requirements for feeding devices (such as rotary feed valves and feeding tanks), making leakage easy. Second, mechanical conveying: such as screw conveyors and belt conveyors. Suitable for short distances, but difficult for long distances, complex equipment, high maintenance requirements, and difficulty in achieving accurate metering and sealing, easily causing dust pollution. Third, traditional negative pressure conveying: while it can solve some dust problems, it usually requires a high-power vacuum pump or vacuum generator, resulting in still high energy consumption, complex systems, and high requirements for negative pressure stability control. These traditional methods generally suffer from high energy consumption, high equipment investment and maintenance costs, susceptibility to pipe blockages and leaks, and poor operational reliability, especially for small and medium-sized boilers or distributed desulfurization points, where economic efficiency is poor. Summary of the Invention

[0003] To address the aforementioned problems, the purpose of this invention is to provide a micro-power negative pressure desulfurizing agent delivery system that can stably and efficiently deliver the desulfurizing agent and is less prone to clogging.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A micro-power negative pressure conveying desulfurizing agent system includes: a buffer chamber, an acceleration chamber, and a compressed air device; the buffer chamber and the compressed air device are respectively connected to the acceleration chamber by pipelines; a weighing module is installed outside the buffer chamber for quantitative supply of desulfurizing agent; a variable frequency feeder is installed on the pipeline connecting the buffer chamber and the acceleration chamber.

[0005] Furthermore, a compressed air valve assembly is provided on the connecting pipe between the compressed air device and the acceleration chamber.

[0006] The weighing module uses a weight sensor.

[0007] The outlet of the acceleration chamber is connected to a dry desulfurization tower.

[0008] Compared with existing technologies, the advantages of this invention are: the compressed air device provides the air source for desulfurizing agent delivery. A buffer chamber, in conjunction with a weighing module, delivers a measured amount of desulfurizing agent to the acceleration chamber. A jet device within the acceleration chamber further accelerates the compressed air, carrying away the desulfurizing agent and providing positive pressure to the delivery pipeline. The outlet of the acceleration chamber connects to a dry desulfurization tower, which operates under negative pressure. The pressure difference between the two ends delivers the desulfurizing agent into the tower. This system has a simple structure, reasonable design, good performance, and is not prone to clogging. It improves the desulfurizing agent delivery efficiency, ensures production sustainability, increases production efficiency, and guarantees stable flue gas emission indicators. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of a micro-power negative pressure conveying desulfurizing agent system according to the present invention. Detailed Implementation

[0010] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments.

[0011] See Figure 1 As shown, a micro-powered negative pressure desulfurizing agent conveying system includes: a buffer chamber 1, an acceleration chamber 2, and a compressed air device 3. The buffer chamber 1 and the compressed air device 3 are respectively connected to the acceleration chamber 2 via pipelines. Since the buffer chamber and the acceleration chamber are radially connected, and the compressed air device is connected to the inlet of the acceleration chamber, the material discharge direction and the compressed air movement direction are perpendicular. A weighing module 4 is installed outside the buffer chamber for quantitatively supplying the desulfurizing agent. A variable frequency feeder 5 is installed on the pipeline connecting the buffer chamber 1 and the acceleration chamber 2. The buffer chamber is used to store the desulfurizing agent.

[0012] A compressed air valve assembly 6 is installed on the connecting pipe between the compressed air device and the acceleration chamber. The compressed air device provides clean and dry compressed air. While the compressed air valve assembly 6 is open to deliver compressed air, the variable frequency feeder 5 also works simultaneously, delivering the desulfurizing agent to the acceleration chamber 2 in small quantities multiple times. The inlet end of the acceleration chamber 2 is connected to the compressed air, and the jet device accelerates the compressed air a second time to form a positive pressure. The outlet end is connected to the dry desulfurization tower 7, which is under negative pressure, causing the airflow to flow rapidly in the acceleration chamber. Compared with the pipe that delivers the desulfurizing agent, the space in the acceleration chamber is under a slightly negative pressure state, so the desulfurizing agent will smoothly enter the acceleration chamber 2 and then enter the dry desulfurization tower 7 through the delivery pipe to carry out the desulfurization reaction.

[0013] The weighing module uses weight sensors. The specific buffer chamber is set on a platform, and weight sensors are installed on both sides of the buffer chamber and between the platform. This allows for accurate control of the amount of desulfurizer required by the system, reducing waste of desulfurizer.

Claims

1. A micro-power negative pressure conveying desulfurizing agent system, characterized in that, include: The system includes a buffer chamber, an acceleration chamber, and a compressed air device. The buffer chamber and the compressed air device are connected to the acceleration chamber via pipelines. A weighing module is installed outside the buffer chamber for quantitatively supplying the desulfurizing agent. A variable frequency feeder is installed on the pipeline connecting the buffer chamber and the acceleration chamber.

2. The micro-power negative pressure conveying desulfurizing agent system according to claim 1, characterized in that, The compressed air device and the acceleration chamber are connected by a compressed air valve group.

3. The micro-power negative pressure conveying desulfurizing agent system according to claim 1, characterized in that, The weighing module uses a weight sensor.

4. The micro-power negative pressure conveying desulfurizing agent system according to claim 1, characterized in that, The outlet of the acceleration chamber is connected to a dry desulfurization tower.

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