Experimental device for superfine calcium jet desulfurization characteristic detection

Abstract

The invention relates to an experimental device for superfine calcium jet desulfurization characteristic detection. The experimental device comprises a flue gas simulation bin, a desulfurization bin, a collection bin and a tail gas recovery bin, to-be-detected flue gas sequentially passes through the desulfurization bin and the collection bin from the flue gas simulation bin and then enters the tail gas recovery bin to be recovered; the flue gas simulation bin and the desulfurization bin are connected through a first pipeline, and a first switch valve is arranged on the first pipeline; the desulfurization bin is connected with the collection bin through a second pipeline, and a second switch valve is arranged on the second pipeline; the collection bin is connected with the tail gas recovery bin through a third pipeline, and a third switch valve is arranged on the third pipeline; temperature acquisition devices are arranged in the flue gas simulation bin, the desulfurization bin, the acquisition bin and the tail gas recovery bin. The device integrates a plurality of functional modules such as flue gas simulation, desulfurization, flue gas collection and tail gas recovery, can comprehensively detect and analyze characteristic parameters in the superfine calcium injection desulfurization process, and provides a scientific basis for optimizing the desulfurization process.

Description

Technical Field

[0001] The invention relates to the technical field of desulfurization experiments, and in particular to an experimental device for detecting desulfurization characteristics by ultrafine calcium injection. Background Art

[0002] With the acceleration of industrialization, coal-fired power generation has become one of the main energy supply methods, and the SO 2 Emissions have a serious impact on the environment. In order to reduce SO 2 To reduce emissions, desulfurization technology has become an indispensable environmental protection measure in coal-fired power plants. Traditional desulfurization methods include wet desulfurization, dry desulfurization and semi-dry desulfurization. Among them, jet desulfurization, as a dry desulfurization technology, is widely used due to its simple operation and low cost.

[0003] The injection desulfurization technology mainly injects desulfurizer (such as limestone or quicklime) into the flue gas flow, and uses the chemical reaction between the desulfurizer and SO2 to reduce the SO2 content in the flue gas. However, the injection desulfurization efficiency is affected by many factors, including the particle size of the desulfurizer, the injection speed, the flue gas temperature, etc.

[0004] Although ultrafine calcium injection desulfurization technology has a high desulfurization efficiency, it still faces some challenges in practical application. First, the preparation cost of ultrafine calcium is high, and it is easy to agglomerate during the injection process, which affects the desulfurization effect. Secondly, most of the existing desulfurization characteristic detection devices cannot accurately simulate the actual flue gas conditions, resulting in deviations between the experimental results and actual applications. In addition, the existing experimental equipment also has deficiencies in flue gas collection, temperature control and exhaust gas treatment, and cannot fully evaluate the desulfurization effect. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the above problems, the present invention provides an experimental device for detecting the characteristics of ultrafine calcium injection desulfurization, which aims to accurately evaluate the desulfurization effect of ultrafine calcium injection by simulating actual flue gas conditions and precisely controlling experimental parameters.

[0007] (II) Technical solution

[0008] In order to solve the above problems, the present invention provides an experimental device for ultrafine calcium injection desulfurization characteristic detection, comprising: a flue gas simulation chamber, a desulfurization chamber, a collection chamber and a tail gas recovery chamber;

[0009] The flue gas simulation chamber, the desulfurization chamber, the collection chamber and the tail gas recovery chamber are connected in sequence, so that the flue gas to be tested passes through the flue gas simulation chamber, the desulfurization chamber and the collection chamber in sequence, and then enters the tail gas recovery chamber for recovery;

[0010] The flue gas simulation chamber and the desulfurization chamber are connected by a first pipeline, and a first switch valve is arranged on the first pipeline; the desulfurization chamber and the collection chamber are connected by a second pipeline, and a second switch valve is arranged on the second pipeline; the collection chamber and the tail gas recovery chamber are connected by a third pipeline, and a third switch valve is arranged on the third pipeline;

[0011] Temperature collection devices are arranged in the flue gas simulation chamber, desulfurization chamber, collection chamber and tail gas recovery chamber.

[0012] Wherein, the smoke simulation chamber includes a smoke mixing chamber, a plurality of gas pipes and a mixing fan; the gas outlets of the plurality of gas pipes are connected to the smoke mixing chamber, and the mixing fan is installed on the bottom plate of the smoke mixing chamber.

[0013] Wherein, the desulfurization bin is provided with a nozzle for connecting with an ultrafine calcium injection nozzle.

[0014] Among them, the collection bin includes a bin body and a collection tube; the temperature collection device of the collection bin is arranged on the bin body, the two side ports of the bin body are respectively connected to the first pipeline and the second pipeline, and the collection tube is installed on the bin body.

[0015] Wherein, rubber sleeves are respectively provided at both ends of the collection tube for sealing connection with corresponding interfaces on the bin body.

[0016] The collection tube is also provided with two adjustable sealing covers. When the two adjustable sealing covers are in the open position, the smoke to be tested can flow from one end of the collection tube to the other end; when the two adjustable sealing covers are in the closed position, the smoke to be tested is sealed in the collection tube and located between the two adjustable sealing covers.

[0017] Wherein, the tail gas recovery tank is connected to the third pipeline through threads.

[0018] Among them, it also includes: an air supply fan; the air supply fan is arranged in the first pipeline, and when the air supply fan is working, the flue gas to be tested in the flue gas simulation chamber is discharged into the desulfurization chamber, the collection chamber and the tail gas recovery chamber in sequence.

[0019] (III) Beneficial effects

[0020] The above technical solution of the present invention has the following advantages: the device can comprehensively detect and analyze the characteristic parameters in the ultrafine calcium injection desulfurization process by integrating multiple functional modules such as flue gas simulation, desulfurization, flue gas collection and exhaust gas recovery, providing a scientific basis for optimizing the desulfurization process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings of the present invention are provided for illustrative purposes only, and the proportions and quantities of the components in the drawings may not necessarily be consistent with the actual products.

[0022] Figure 1 It is a structural diagram of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the smoke simulation chamber of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the desulfurization bin of the present invention;

[0025] Figure 4 It is a schematic diagram of the assembly of the collection bin of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the collection bin of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the adjustable sealing cover and the collection tube of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the adjustable sealing cover of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-7 As shown, the embodiment of the present invention provides an experimental device for detecting ultrafine calcium injection desulfurization characteristics, including the following components:

[0031] like Figure 2 As shown, the smoke simulation chamber 1 is used to simulate actual smoke conditions, including a smoke mixing chamber 101, a plurality of gas pipes 102 and a mixing fan 103. The gas outlet of the gas pipe 102 is connected to the smoke mixing chamber 101, and the mixing fan 103 is installed on the bottom plate of the smoke mixing chamber 101 to ensure that the smoke is evenly mixed. In the present invention, the plurality of gas pipes 102 may preferably include a sulfur dioxide gas pipe, an air gas pipe, an oxygen gas pipe or a smoke gas pipe, etc. Gas is input into the smoke mixing chamber 101 through the gas pipe 102, and the input gas is stirred by the mixing fan 103 in the smoke mixing chamber 101, so as to be fully mixed, thereby creating the desired smoke to be tested. The use of the smoke simulation chamber 1 allows smoke to be manufactured on demand in the present invention, and experiments on specific smoke can be stably repeated.

[0032] like Figure 3As shown, the desulfurization bin 2 is used to spray ultrafine calcium for desulfurization reaction, and is provided with a nozzle 201 for connecting to an ultrafine calcium spray nozzle. The ultrafine calcium spray nozzle is connected to the nozzle 201, and the connection method can be arbitrarily selected in the prior art, and is not specifically limited here. Such as common snap-on, threaded connection, flange connection, etc., as long as the ultrafine calcium in the ultrafine calcium spray nozzle can be sprayed into the desulfurization bin 2, so those skilled in the art can choose a reasonable connection method according to actual needs. Generally speaking, an existing detachable connection method should be selected to facilitate the maintenance and repair of the equipment and the cleaning of the desulfurization bin.

[0033] like Figure 4-5 As shown, the collection chamber 3 is used to collect flue gas samples after desulfurization, and includes a chamber body 301 and a collection pipe 302. Ports on both sides of the chamber body 301 are connected to the first pipe 5 and the second pipe 6 respectively, and the collection pipe 302 is installed on the chamber body 301.

[0034] like Figure 1 As shown, the tail gas recovery bin 4 is used to recover the treated tail gas. Because this device is an experimental device, the desulfurization effect is not fixed, so the tail gas after desulfurization treatment cannot be discharged directly into the air. The tail gas of the experiment is recovered by the tail gas recovery bin 4. According to the data collected in the collection bin 3, it is determined whether the gas in the tail gas recovery bin 4 needs further treatment. If the emission standard is not met, the tail gas in the tail gas recovery bin 4 can be subjected to secondary treatment. The method of secondary treatment is not specifically limited in the present invention. The tail gas recovery bin 4 can be collected and handed over to a professional flue gas treatment device for treatment, or it can be desulfurized again through the desulfurization bin 2 of the present invention.

[0035] The air conveying fan 12 is arranged in the first pipeline 5 and is used to push the flue gas to be tested to pass through the desulfurization chamber 2 and the collection chamber 3 in sequence and enter the tail gas recovery chamber 4.

[0036] The flue gas simulation chamber 1, the desulfurization chamber 2, the collection chamber 3 and the tail gas recovery chamber 4 are connected in sequence, so that the flue gas to be tested passes through the flue gas simulation chamber 1, the desulfurization chamber 2 and the collection chamber 3 in sequence, and then enters the tail gas recovery chamber 4 for recovery;

[0037] The flue gas simulation chamber 1 and the desulfurization chamber 2 are connected by a first pipe 5 and are provided with a first switch valve 8; the desulfurization chamber 2 and the collection chamber 3 are connected by a second pipe 6 and are provided with a second switch valve 9; the collection chamber 3 and the tail gas recovery chamber 4 are connected by a third pipe 7 and are provided with a third switch valve 10. The first switch valve 8, the second switch valve 9 and the third switch valve 10 are used to control the flow direction and flow rate of the flue gas.

[0038] A temperature collection device 11 is provided in the flue gas simulation chamber 1, the desulfurization chamber 2, the collection chamber 3 and the tail gas recovery chamber 4. Preferably, the temperature collection device 11 of the collection chamber 3 is provided on the chamber body 301. The temperature collection device 11 is used to collect the flue gas temperature at the location and use the flue gas temperature as experimental data.

[0039] In an optional embodiment, if Figure 4-7 As shown, rubber sleeves 312 are provided at both ends of the collection tube 302; the collection tube 302 is connected to the two interfaces 311 of the bin body 301 through the rubber sleeves 312, and the rubber sleeves 312 play a sealing role to prevent the smoke to be tested from leaking out, and the rubber sleeves 312 are deformable, which is conducive to installing the collection tube 302 on the bin body 301. During installation, the rubber sleeve 312 at one end of the collection tube 302 can be firstly put on the corresponding end of the bin body 301, and then the rubber sleeve 312 at the other end of the collection tube 302 can be put on the corresponding other end of the bin body 301. Those skilled in the art can understand that in the present invention, the length of the collection tube 302 is less than the length of the notch of the bin body 301, and the collection tube 302 and the bin body 301 are connected through the rubber sleeves 312.

[0040] The collection tube 302 is also provided with two adjustable sealing covers 322, which include a sealing sheet 332, a sealing rubber ring 342 and a rotating handle 352; both end surfaces of the sealing sheet 332 are provided with sealing rubber rings 342, the sealing sheet 332 is fixedly connected to the rotating handle 352, and the operating part of the rotating handle 352 is located outside the collection tube 302. When the rotating handle 352 is rotated, the sealing sheet 332 is driven to rotate inside the collection tube 302, and the sealing rubber ring 342 is used to seal the inside of the collection tube 302.

[0041] When the two adjustable sealing covers 322 are in the open position, the smoke to be tested can flow from one end of the collection tube 302 to the other end; when the two adjustable sealing covers 322 are in the closed position, the smoke to be tested is sealed in the collection tube 302 and located between the two adjustable sealing covers 322.

[0042] In an optional embodiment, the tail gas recovery bin 4 is connected to the third pipe 7 by threads, so as to facilitate reasonable tail gas treatment after the tail gas recovery bin 4 is disassembled.

[0043] An experimental device for detecting the characteristics of ultrafine calcium injection desulfurization in the present invention. During the experiment:

[0044] The required gas is input into the smoke simulation chamber 1, and the actual smoke conditions are simulated through the cooperation of the mixing fan 103 and the gas pipe 102.

[0045] The flue gas passes through the first pipeline 5 and the first switch valve 8 and enters the desulfurization chamber 2. The ultrafine calcium injection nozzle is connected to the nozzle 201 to inject ultrafine calcium into the desulfurization chamber 2 for desulfurization reaction.

[0046] The desulfurized flue gas passes through the second pipe 6 and the second switch valve 9 and enters the collection chamber 3. The temperature collection device in the collection chamber 3 monitors the flue gas temperature in real time and obtains the collected flue gas temperature parameters.

[0047] The smoke sample flows to the exhaust gas recovery chamber 4 through the collection tube 302 , and the rubber sleeves 312 at both ends of the collection tube 302 ensure the sealing of the interface 311 with the chamber body 301 .

[0048] The two adjustable sealing covers 322 on the collection tube 302 can be adjusted as needed to control the flow direction and sealing state of the smoke. In this experiment, multiple collection tubes 302 can be prepared. When the two adjustable sealing covers 322 are in the closed position, the smoke sample is sealed in the collection tube 302. At this time, the second switch valve 9 and the third switch valve 10 can be closed, and the collection tube 302 can be taken out from the bin body 301. Then a new collection tube 302 is installed on the bin body 301, and the second switch valve 9 and the third switch valve 10 are opened in turn, and then the two adjustable sealing covers 322 are in the open position to start the next smoke sample collection. Therefore, the experiment can be carried out after collecting multiple tubes of smoke samples.

[0049] The treated tail gas passes through the third pipeline 7 and the third switch valve 10 and enters the tail gas recovery bin 4 for recovery treatment.

[0050] The air conveying fan 12 works in the first pipeline 5 to push the smoke through each chamber in sequence.

[0051] Through the above implementation, the experimental device of the present invention can effectively detect the ultrafine calcium injection desulfurization characteristics, and provide experimental support for the research and optimization of desulfurization technology.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that not every embodiment contains only one independent technical solution. In the absence of a conflict of solutions, the various technical features mentioned in each embodiment can be combined in any manner to form other implementation methods that can be understood by those skilled in the art.

[0053] In addition, without departing from the scope of the present invention, the technical solutions described in the aforementioned embodiments may be modified, or some of the technical features may be replaced by equivalents, without causing the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An experimental device for detecting the characteristics of ultrafine calcium injection desulfurization, characterized in that: include: Flue gas simulation chamber, desulfurization chamber, collection chamber and tail gas recovery chamber; The flue gas simulation chamber, the desulfurization chamber, the collection chamber and the tail gas recovery chamber are connected in sequence, so that the flue gas to be tested passes through the flue gas simulation chamber, the desulfurization chamber and the collection chamber in sequence, and then enters the tail gas recovery chamber for recovery; The flue gas simulation chamber and the desulfurization chamber are connected by a first pipeline, and a first switch valve is arranged on the first pipeline; the desulfurization chamber and the collection chamber are connected by a second pipeline, and a second switch valve is arranged on the second pipeline; the collection chamber and the tail gas recovery chamber are connected by a third pipeline, and a third switch valve is arranged on the third pipeline; Temperature collection devices are arranged in the flue gas simulation chamber, desulfurization chamber, collection chamber and tail gas recovery chamber.

2. An experimental device for detecting the characteristics of ultrafine calcium injection desulfurization as claimed in claim 1, characterized in that: The smoke simulation chamber comprises a smoke mixing chamber, a plurality of gas pipes and a mixing fan; the gas outlets of the plurality of gas pipes are connected to the smoke mixing chamber, and the mixing fan is installed on the bottom plate of the smoke mixing chamber.

3. An experimental device for detecting the characteristics of ultrafine calcium injection desulfurization as claimed in claim 2, characterized in that: The desulfurization bin is provided with a nozzle for connecting with an ultrafine calcium injection nozzle.

4. An experimental device for detecting the characteristics of ultrafine calcium injection desulfurization as claimed in claim 3, characterized in that: The collection bin comprises a bin body and a collection tube; a temperature collection device of the collection bin is arranged on the bin body, ports on both sides of the bin body are respectively connected to the first pipeline and the second pipeline, and the collection tube is installed on the bin body.

5. An experimental device for detecting the characteristics of ultrafine calcium injection desulfurization as claimed in claim 4, characterized in that: Both ends of the collection tube are provided with rubber sleeves for sealingly connecting with corresponding interfaces on the bin body.

6. An experimental device for detecting the characteristics of ultrafine calcium injection desulfurization as claimed in claim 5, characterized in that: The collection tube is also provided with two adjustable sealing covers. When the two adjustable sealing covers are in the open position, the smoke to be tested can flow from one end of the collection tube to the other end; when the two adjustable sealing covers are in the closed position, the smoke to be tested is sealed in the collection tube and located between the two adjustable sealing covers.

7. An experimental device for detecting the characteristics of ultrafine calcium injection desulfurization as claimed in claim 6, characterized in that: The tail gas recovery tank is connected to the third pipeline via threads.

8. An experimental device for detecting the characteristics of ultrafine calcium injection desulfurization as claimed in claim 7, characterized in that: Also includes: Air fan; The air delivery fan is arranged in the first pipeline. When the air delivery fan is working, the flue gas to be tested in the flue gas simulation chamber is discharged into the desulfurization chamber, the collection chamber and the tail gas recovery chamber in sequence.

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