Humidifier and dry desulfurization catalyst desulfurization efficiency detection system

Abstract

The utility model discloses a humidifier and a desulfurization efficiency detection system for a dry desulfurization catalyst. The technical problems that in the prior art, the humidifying efficiency is low, and the humidifying effect is difficult to meet the requirement for extremely high humidity or low humidity are solved. The humidifier is used for humidifying gas to be desulfurized and comprises a tank body filled with water and a first heating mechanism for heating the tank body, a gas inlet and a gas outlet are formed in the tank body, the humidifier further comprises a porous filler layer, the porous filler layer is arranged below the liquid level, and the periphery of the porous filler layer is connected with the inner wall of the tank body; the atomizing mechanism is arranged above the liquid level, and the atomizing mechanism is used for atomizing water; the air inlet pipeline is connected with the air inlet and extends to the lower part of the porous filler layer, and the lower end of the air inlet pipeline is provided with air outlet holes which are arranged at intervals from top to bottom.

Description

Technical Field

[0001] The utility model relates to the technical field of dry desulfurization catalysts, in particular to a humidifier and a desulfurization efficiency detection system for dry desulfurization catalysts. Background Art

[0002] Catalytic flue gas desulfurization technology is a known dry desulfurization technology with particularly promising application prospects. Its basic principle is: when the humidified flue gas to be desulfurized passes through the desulfurization catalyst bed, sulfur dioxide, water, oxygen and sulfuric acid mist in the flue gas to be desulfurized are adsorbed on the surface and pores of the desulfurization catalyst. Under low temperature conditions, sulfur dioxide is synchronously catalytically oxidized by the desulfurization catalyst to produce sulfuric acid, ultimately achieving the desulfurization effect of removing sulfur dioxide and sulfuric acid mist.

[0003] In catalytic flue gas desulfurization technology, the rational use of desulfurization catalysts is one of the key factors affecting the desulfurization effect. By testing the desulfurization efficiency and operating conditions of desulfurization catalysts, the project commissioning cycle can be significantly reduced and the desulfurization operation effect can be improved. However, the detection devices currently used in experimental institutions for activated carbon desulfurization efficiency often have the disadvantages of being bulky and having limited usage scenarios. As a result, the detection devices are limited in purpose and are only suitable for use under ideal laboratory conditions, which is significantly different from actual engineering applications. They also require a long commissioning cycle before they can be put into actual engineering applications.

[0004] The applicant of this application has submitted a dry desulfurization catalyst desulfurization efficiency detection device with application number 2024215559671. It has a simple and ingenious structure, low cost, and is easy to use. It also combines advantages in many aspects such as process simulation, parameter control, and safety detection, and provides important technical support for the development and performance evaluation of dry desulfurization catalysts. However, the degree of automation of the detection device is low, and it is difficult to achieve a high detection efficiency when multiple desulfurization reactors are used. In addition, the humidification method of the current humidifier is to pass the gas to be desulfurized into water. The humidification efficiency of this humidification method is low, and the humidification effect is difficult to meet the needs of extreme high humidity or low humidity. Utility Model Content

[0005] The first purpose of the utility model is to provide a dry desulfurization catalyst desulfurization efficiency detection system to solve the technical problems of low automation and low detection efficiency in the prior art.

[0006] The second object of the present invention is to provide a humidifier and a dry desulfurization catalyst desulfurization efficiency detection system to solve the technical problems in the prior art that the humidification efficiency is low and the humidification effect is difficult to meet the requirements of extreme high humidity or low humidity.

[0007] In order to achieve the first purpose above, the present invention provides a desulfurization efficiency detection system for dry desulfurization catalysts, and the technical solution is as follows:

[0008] The desulfurization efficiency detection system of the dry desulfurization catalyst comprises: a gas mixing component, wherein the gas mixing component comprises a mixer, wherein the mixer has at least three raw gas inlets and one mixed gas outlet; a raw gas circulation-desulfurization reaction component, wherein the raw gas circulation-desulfurization reaction component comprises a raw gas circulation branch and a desulfurization reaction branch connected in parallel; the desulfurization reaction branch comprises a humidifier and a desulfurization reactor; the desulfurization reactor comprises a desulfurization catalyst packing layer, a humidified gas inlet, a desulfurized gas outlet, a regeneration liquid inlet, a regeneration acid outlet, a hot medium inlet and a cold medium outlet; There are at least two desulfurization reactors; a heating component, which includes a hot medium pipe connected to the hot medium inlet and a cold medium pipe connected to the cold medium outlet; a regeneration component, which includes a regeneration liquid pipe connected to the regeneration liquid inlet and a regeneration acid pipe connected to the regeneration acid outlet; a control component, which includes a first control mechanism for controlling the humidity of the humidified gas, a second control mechanism for controlling the flow direction of the humidified gas, a third control mechanism for controlling the operation of the heating component, and a fourth control mechanism for controlling the operation of the regeneration component.

[0009] Therefore, the desulfurization efficiency detection system of the dry desulfurization catalyst of the present invention has the following advantages: (1) It simulates the key links in the actual industrial desulfurization process, including humidification, desulfurization reaction, catalyst regeneration, etc., and provides a more realistic test environment for the performance evaluation of the desulfurization catalyst. (2) It can be used in the laboratory, in which case at least three raw gas inlets are connected to N2 gas cylinders, O2 gas cylinders, and SO2 gas cylinders respectively to simulate actual process conditions, or it can be used directly on the project site, in which case at least three raw gas inlets are connected to different positions of the flue gas pipeline to directly use industrial flue gas as the gas source, so as to provide more accurate reference suggestions for the parameters of the actual operation of the project and avoid unnecessary waste in the project commissioning. (3) The structure of each component is simple, easy to disassemble and assemble, and convenient to move between different detection locations, and it is highly practical. (4) Desulfurization process parameters such as temperature, humidity, regeneration, etc. can be precisely controlled, which is conducive to in-depth exploration of the influence of different desulfurization process parameters on the desulfurization efficiency of the desulfurization catalyst. (5) The degree of automation is high, and the four control mechanisms work together to significantly improve the detection efficiency when multiple desulfurization reactors are used. (6) It is compatible with different types of dry desulfurization catalysts, providing a highly versatile testing platform for the development of desulfurization technology.

[0010] As a further improvement to the above-mentioned dry desulfurization catalyst desulfurization efficiency detection system, the humidifier includes a first heating mechanism; the first control mechanism includes a humidity sensor for detecting the humidity of the humidified gas and a first controller for controlling the heating power of the first heating mechanism based on the humidity sensor detection data; and the second control mechanism includes a solenoid valve provided on the humidified gas pipeline and an electric butterfly valve provided on the desulfurized gas pipeline. As a result, the first and second control mechanisms have simple structures and are easy to install, achieving control of the humidity and flow direction of the humidified gas.

[0011] As a further improvement to the above-mentioned dry desulfurization catalyst desulfurization efficiency detection system, the heating assembly includes a second heating mechanism; the third control mechanism includes temperature sensors and a second controller. The temperature sensors include a first temperature sensor for detecting the temperature of the humidified gas and / or a second temperature sensor for detecting the temperature of the cold medium; the second controller controls the heating power of the first heating mechanism and / or the second heating mechanism based on the detection data from the temperature sensors. As a result, the third control mechanism has a simple structure and is easy to install, achieving control over the operation of the heating assembly.

[0012] As a further improvement to the above-mentioned dry desulfurization catalyst desulfurization efficiency detection system, the third control mechanism further includes a first electromagnetic flowmeter and a first butterfly valve provided on the hot medium pipeline, and a second electromagnetic flowmeter and a second butterfly valve provided on the cold medium pipeline. Thus, the third control mechanism can control the flow direction of the hot and cold media based on the number and location of desulfurization reactors in use, thereby controlling the target of the heating component.

[0013] As a further improvement to the above-mentioned dry desulfurization catalyst desulfurization efficiency detection system, the regeneration assembly includes a regeneration liquid storage tank and a regeneration acid storage tank; the fourth control mechanism includes a third electromagnetic flowmeter and a third butterfly valve installed on the regeneration liquid pipeline, and a fourth electromagnetic flowmeter and a fourth butterfly valve installed on the regeneration acid pipeline. Thus, the fourth control mechanism has a simple structure and is easy to install, achieving control over the regeneration assembly's operating targets.

[0014] As a further improvement to the above-mentioned dry desulfurization catalyst desulfurization efficiency detection system, the regenerated acid storage tank has a drain pipe; the fourth control mechanism also includes a concentration sensor for detecting the acid concentration of the regenerated acid, a fifth butterfly valve and a ball valve located on the drain pipe, and a third controller for controlling the flow of the regenerated acid based on the detection data from the concentration sensor. Thus, the acid is discharged only when the concentration reaches a threshold value; if the concentration does not reach the threshold, the acid can be recycled as regeneration liquid, reducing water consumption.

[0015] As a further improvement of the above-mentioned dry desulfurization catalyst desulfurization efficiency detection system: a first liquid level gauge is provided in the regeneration liquid storage tank; and a second liquid level gauge is provided in the regeneration acid storage tank.

[0016] As a further improvement to the above-mentioned dry desulfurization catalyst desulfurization efficiency detection system, it also includes: a cooling and water removal component for cooling and drying the raw gas or desulfurized gas output from the raw gas circulation-desulfurization reaction component; a data acquisition and analysis component for detecting the sulfur dioxide content of the dry gas output by the cooling and water removal component; and an exhaust gas treatment component for absorbing the exhaust gas with alkaline solution. This improves detection accuracy, reduces emission risks, and enhances overall safety.

[0017] As a further improvement to the above-mentioned dry desulfurization catalyst desulfurization efficiency detection system, the input ends of the raw gas flow branch and the desulfurization reaction branch are connected to the gas mixing assembly via a first three-way valve, while the output ends of the raw gas flow branch and the desulfurization reaction branch are connected to the cooling and water removal assembly via a second three-way valve. This results in a simple structure and easy assembly and disassembly.

[0018] As a further improvement to the above-mentioned dry desulfurization catalyst desulfurization efficiency detection system: the gas mixing component also includes a flow controller and a flow display arranged on the raw gas inlet pipe; thereby, it is convenient to control the sulfur content in the mixed gas. The cooling and water removal component includes a drying bottle and a cooler connected in sequence; the dry gas outlet of the cooling and water removal component is connected to the data acquisition and analysis component and the exhaust gas treatment component respectively through a third three-way valve, and a needle valve is provided on the branch connecting the cooling and water removal component and the exhaust gas treatment component; the exhaust gas outlet of the data acquisition and analysis component is connected to the exhaust gas treatment component. Thus, the needle valve can control the dry gas flow entering the exhaust gas treatment component, thereby indirectly controlling the dry gas flow entering the analyzer, preventing the dry gas flow from being too large or too small and affecting the accuracy of the detection results.

[0019] In order to achieve the second purpose mentioned above, the present invention provides a humidifier and a dry desulfurization catalyst desulfurization efficiency detection system, and the technical solution is as follows:

[0020] A humidifier is used to humidify the gas to be desulfurized, comprising a tank body filled with water and a first heating mechanism for heating the tank body, the tank body being provided with an air inlet and an air outlet, and further comprising: a porous packing layer, the porous packing layer being provided below the liquid surface, the four sides of the porous packing layer being connected to the inner wall of the tank body; an atomizing mechanism, the atomizing mechanism being provided above the liquid surface, the atomizing mechanism being used to atomize water; an air inlet pipe, the air inlet pipe being connected to the air inlet and extending below the porous packing layer, the lower end of the air inlet pipe being provided with air outlet holes arranged at intervals from top to bottom.

[0021] Therefore, the humidifier of the present invention has the following advantages: (1) The particles in the packing layer can provide many tiny contact points, greatly increasing the contact area between the gas and the liquid, thereby improving the humidification effect of the gas; the gas encounters resistance when passing through the packing layer, which can prolong the residence time of the gas in the liquid, allowing the gas to absorb more water, thereby increasing its humidity; the packing layer can evenly distribute the gas, reduce the unevenness of the gas flow, and help the gas and liquid to fully contact, thereby improving the humidification efficiency; when the gas passes through the packing layer, many small bubbles will be formed, and these bubbles will continue to contact the liquid during the rising process in the liquid, further increasing the humidity of the gas. (2) The atomization mechanism disperses water into very fine water droplets, significantly increasing the surface area of the water, making it easier for water vapor to be released from the water droplets, thereby increasing the water vapor generation rate; the water vapor generated by atomization can be more evenly distributed in the gas, thereby helping to improve the overall humidification effect. (3) The lower end of the air inlet pipe is provided with air outlet holes arranged at intervals from top to bottom, which can further improve the uniformity of gas dispersion in the water, thereby improving the humidification efficiency.

[0022] As a further improvement to the above humidifier, the first heating mechanism includes a jacket disposed outside the tank body and at least two heating jackets spaced apart from each other from top to bottom between the jacket and the outer wall of the tank body. Thus, the number of heating jackets in operation can be controlled according to humidity requirements.

[0023] As a further improvement of the above humidifier, the porous filler layer comprises an upper perforated plate, a lower perforated plate, and ceramic particles and / or polytetrafluoroethylene particles accumulated between the upper and lower perforated plates, thereby achieving a simple structure and good corrosion resistance.

[0024] As a further improvement to the above-mentioned humidifier, a drain pipe is provided at the bottom of the tank, and the water inlet of the atomizing mechanism is connected to the drain pipe via a circulation pipe. The drain pipe is equipped with a first shut-off valve. Thus, the water in the tank is directly used as the atomizing water source, resulting in a higher temperature of the atomized water droplets, thereby improving humidification efficiency.

[0025] As a further improvement to the above-mentioned humidifier, the device further includes a first control mechanism for controlling the humidity of the humidified gas discharged to the outside of the gas outlet. The first control mechanism includes a humidity sensor for detecting the humidity of the humidified gas, an electric ball valve provided on the circulation conduit, and a first controller for controlling the heating power of the first heating mechanism and / or the opening and closing of the electric ball valve based on data detected by the humidity sensor. Thus, the first control mechanism has a simple structure and is easy to install, thereby achieving humidity control of the humidified gas.

[0026] As a further improvement to the above humidifier, the device further includes a scale cleaning agent pipeline connected to the water inlet of the atomizing mechanism, and a second shut-off valve is provided on the scale cleaning agent pipeline. Thus, the scale cleaning agent is atomized by the atomizing mechanism, which can reduce the amount of scale cleaning agent used and improve the scale cleaning effect.

[0027] As a further improvement of the above humidifier, a stirring mechanism is further provided at the bottom of the tank, thereby further improving the uniformity of gas-liquid distribution and the humidification efficiency.

[0028] A dry desulfurization catalyst desulfurization efficiency detection system comprises the above-mentioned humidifier.

[0029] The following is a further description of the embodiments of the invention provided in this specification in conjunction with the accompanying drawings and specific implementation methods. Additional aspects and advantages of the embodiments of the invention provided in this specification will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the embodiments of the invention provided in this specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings that constitute part of the embodiments of the inventions provided in this specification are intended to assist in understanding the embodiments of the inventions provided in this specification. The contents provided in the drawings and their related descriptions in the embodiments of the inventions provided in this specification may be used to explain the embodiments of the inventions provided in this specification, but do not constitute improper limitations on the embodiments of the inventions provided in this specification. In the drawings:

[0031] Figure 1 This is a structural schematic diagram of a dry desulfurization catalyst desulfurization efficiency detection system according to Example 1 of the present utility model.

[0032] Figure 2 This is a schematic structural diagram of a mixer in a dry desulfurization catalyst desulfurization efficiency detection system according to Example 1 of the present utility model.

[0033] Figure 3 This is a schematic structural diagram of the desulfurization reactor in the dry desulfurization catalyst desulfurization efficiency detection system of Example 1 of the present utility model.

[0034] Figure 4 This is a structural schematic diagram of a humidifier in a dry desulfurization catalyst desulfurization efficiency detection system according to Example 2 of the present utility model.

[0035] The relevant marks in the above drawings are:

[0036] 110-first three-way valve, 120-second three-way valve, 130-third three-way valve, 140-needle valve, 151-raw gas flow branch, 152-desulfurization reaction branch, 510-drying bottle, 520-cooler, 530-analyzer, 540-absorption bottle, 200-mixer, 210-first outer tube, 220-first inner tube, 230-first spiral tube, 240-raw gas inlet, 250-mixed gas outlet, 260 - flow controller, 300- tank body, 310- first heating mechanism, 311- jacket, 312- heating jacket, 320- humidity sensor, 330- porous packing layer, 340- atomization mechanism, 350- air inlet pipe, 351- air outlet, 360- drain pipe, 361- first stop valve, 370- circulation pipe, 371- electric ball valve, 380- scale cleaning agent pipeline, 381- second stop valve, 390- stirring mechanism, 4 00-desulfurization reactor, 410-second outer tube, 420-second inner tube, 421-regeneration acid outlet, 422-regeneration liquid inlet, 423-porous support plate, 430-second spiral tube, 440-desulfurization catalyst packing layer, 450-humidification gas inlet, 460-desulfurized gas outlet, 470-heat medium inlet, 480-cold medium outlet, 610-solenoid valve, 620-electric butterfly valve, 710-first temperature sensor , 720-second temperature sensor, 730-first electromagnetic flowmeter, 740-first butterfly valve, 750-second electromagnetic flowmeter, 760-second butterfly valve, 770-second heating mechanism, 810-third electromagnetic flowmeter, 820-third butterfly valve, 830-fourth electromagnetic flowmeter, 840-fourth butterfly valve, 850-concentration sensor, 860-fifth butterfly valve, 870-ball valve, 910-regeneration liquid storage tank, 920-regeneration acid storage tank. DETAILED DESCRIPTION

[0037] The following is a clear and complete description of the embodiments of the invention provided in this specification in conjunction with the accompanying drawings. A person of ordinary skill in the art will be able to implement the embodiments of the invention provided in this specification based on these descriptions. Before describing the embodiments of the invention provided in this specification in conjunction with the accompanying drawings, it should be noted that:

[0038] The technical solutions and technical features provided in each part of the embodiments of the invention provided in this specification, including the following description, can be combined with each other unless there is any conflict.

[0039] In addition, the embodiments of the inventions provided in this specification involved in the following descriptions are generally only a partial embodiment of the embodiments of the inventions provided in this specification rather than all the embodiments. Therefore, based on the embodiments of the inventions provided in this specification, all other embodiments obtained by ordinary technicians in this field without making any creative work should fall within the scope of protection of the embodiments of the inventions provided in this specification.

[0040] Regarding the terms and units in the embodiments of the inventions provided in this specification: The terms "including," "comprising," "having," and any variations thereof in the descriptions and claims of the embodiments of the inventions provided in this specification, and in related sections, are intended to cover non-exclusive inclusions. In addition, other relevant terms and units in the embodiments of the inventions provided in this specification may be reasonably interpreted based on the relevant content of the embodiments of the inventions provided in this specification.

[0041] Example 1

[0042] Figure 1 Schematic diagram of the structure of the desulfurization efficiency detection system of the dry desulfurization catalyst of this embodiment. Figure 2 This is a schematic structural diagram of a mixer in the desulfurization efficiency detection system for a dry desulfurization catalyst according to this embodiment. Figure 3 Schematic diagram of the structure of the desulfurization reactor in the desulfurization efficiency detection system of the dry desulfurization catalyst of this embodiment.

[0043] like Figure 1 As shown, the dry desulfurization catalyst desulfurization efficiency detection system includes a gas mixing component, a raw gas circulation-desulfurization reaction component, a heating component, a regeneration component, a control component, a cooling and water removal component, a data acquisition and analysis component, and an exhaust gas treatment component.

[0044] The gas mixing assembly includes a mixer 200, a flow controller, and a flow display. The mixer 200 has three raw gas inlets 240 and a mixed gas outlet 250. The flow controller 260 and the flow display are arranged in three groups and are connected to the three raw gas inlets 240 respectively. The flow controller 260 can be, but is not limited to, a D07-19 mass flow controller manufactured by Beijing Huacheng Electronics Co., Ltd. (formerly known as Beijing Qixing Huachuang Flowmeter Co., Ltd.). The flow display can be, but is not limited to, a D08-1F single-channel display manufactured by Beijing Huacheng Electronics Co., Ltd.

[0045] The mixer 200 specifically includes a first outer tube 210, a first inner tube 220 and a first spiral tube 230. The three raw gas inlets 240 are arranged on the lower side wall of the first outer tube 210 and are distributed at equal intervals, and the mixed gas outlet 250 is arranged at the top of the first outer tube 210. The bottom of the first inner tube 220 is connected to the bottom of the outer tube, and the top of the first inner tube 220 is open. The first spiral tube 230 is sleeved between the first outer tube 210 and the first inner tube 220; the lower end of the first spiral tube 230 is connected to the lower side wall of the first inner tube 220 and is in communication with the interior of the first inner tube 220, and the upper end of the first spiral tube 230 passes through the mixed gas outlet 250 at the top of the first outer tube 210 and is connected to the raw gas circulation-desulfurization reaction assembly.

[0046] The raw gas circulation-desulfurization reaction component includes a raw gas circulation branch 151 and a desulfurization reaction branch 152 connected in parallel. The input ends of the raw gas circulation branch 151 and the desulfurization reaction branch 152 are connected to the gas mixing component via a first three-way valve 110, and the output ends of the raw gas circulation branch 151 and the desulfurization reaction branch 152 are connected to the cooling and water removal component via a second three-way valve 120. The desulfurization reaction branch includes a humidifier and a desulfurization reactor 400.

[0047] The humidifier includes a first water bath having a first heating mechanism 310 .

[0048] There are four desulfurization reactors 400, which can be used individually or in parallel. The desulfurization reactor 400 has a desulfurization catalyst packing layer 440, a humidified gas inlet 450, a desulfurized gas outlet 460, a regeneration liquid inlet 422, a regeneration acid outlet 421, a hot medium inlet 470 and a cold medium outlet 480. Figure 4As shown, the desulfurization reactor 400 specifically includes a second outer tube 410, a second inner tube 420, a second spiral tube 430 and a porous support plate 423. The second outer tube 410 is provided with a humidified gas inlet 450, a hot medium inlet 470 and a cold medium outlet 480 connected to the heating assembly. The interior of the second inner tube 420 is a desulfurization catalyst packing layer 440; the upper and lower ends of the second inner tube 420 pass through the upper and lower ends of the second outer tube 410; the upper part of the second inner tube 420 that exceeds the second outer tube 410 is provided with a regeneration liquid inlet 422 (which also serves as a desulfurization catalyst filling port) and a desulfurized gas outlet 460; the lower part of the second inner tube 420 that exceeds the second outer tube 410 is provided with a regeneration acid outlet 421. The second spiral tube 430 is sleeved between the second outer tube 410 and the second inner tube 420. The lower end of the second spiral tube 430 is connected to the lower sidewall of the second inner tube 420 and communicates with the interior of the second inner tube 420. The upper end of the second spiral tube 430 passes through the humidified gas inlet 450 on the upper sidewall of the first outer tube 210 and is connected to the humidified gas outlet of the humidification bottle. The porous support plate 423 is disposed at the lower portion of the second inner tube 420, and the desulfurization catalyst filling layer is located above the porous support plate 423.

[0049] The mixer 200 and the desulfurization reactor 400 are both made of quartz and have a conical bottom support.

[0050] The heating assembly includes a second water bath, a hot medium pipe connected to the hot medium inlet, and a cold medium pipe connected to the cold medium outlet; the second water bath has a second heating mechanism 770.

[0051] The regeneration component includes a regeneration liquid pipeline connected to the regeneration liquid inlet 422, a regeneration acid pipeline connected to the regeneration acid outlet, a regeneration liquid storage tank 910 and a regeneration acid storage tank 920; a first liquid level gauge is provided in the regeneration liquid storage tank 910; the regeneration acid storage tank 920 has a drain pipe; and a second liquid level gauge is provided in the regeneration acid storage tank 920.

[0052] The control component includes a first control mechanism for controlling the humidity of the humidified gas, a second control mechanism for controlling the flow direction of the humidified gas, a third control mechanism for controlling the operation of the heating component, and a fourth control mechanism for controlling the operation of the regeneration component.

[0053] The first control mechanism includes a humidity sensor 320 for detecting the humidity of the humidified gas and a first controller for controlling the increase or decrease of the heating power of the first heating mechanism 310 according to the detection data of the humidity sensor 320 .

[0054] The second control mechanism includes a solenoid valve 610 provided on the humidified gas pipeline and an electric butterfly valve 620 provided on the desulfurized gas pipeline.

[0055] The third control mechanism includes temperature sensors, including a first temperature sensor 710 for detecting the temperature of the humidified gas and / or a second temperature sensor 720 for detecting the temperature of the cold medium, and a second controller. The second controller controls the heating power of the first heating mechanism 310 and / or the second heating mechanism 770 based on the detection data of the temperature sensors. The third control mechanism also includes a first electromagnetic flowmeter 730 and a first butterfly valve 740 provided on the hot medium pipeline, and a second electromagnetic flowmeter 750 and a second butterfly valve 760 provided on the cold medium pipeline.

[0056] The fourth control mechanism includes a third electromagnetic flowmeter 810 and a third butterfly valve 820 provided on the regeneration liquid pipeline, and a fourth electromagnetic flowmeter 830 and a fourth butterfly valve 840 provided on the regeneration acid pipeline. The fourth control mechanism also includes a concentration sensor 850 for detecting the concentration of the regeneration acid, a fifth butterfly valve 860 and a ball valve 870 provided on the discharge pipe, and a third controller for controlling the flow direction of the regeneration acid based on the detection data of the concentration sensor 850.

[0057] The cooling and dehydration assembly is used to cool and dry the raw gas or desulfurized gas output from the raw gas circulation and desulfurization reaction assembly. It includes a drying flask 510 and a cooler 520 connected in sequence. The drying flask 510 utilizes a spherical glass cold trap placed in an ice-water bath. The cooler 520 can be, but is not limited to, a CS-5A electronic condenser manufactured by Fujian Longyan Xianzhuo Technology Co., Ltd.

[0058] The data acquisition and analysis component is used to detect the sulfur dioxide content of the dry gas output by the cooler 520; the data acquisition and analysis component includes an analyzer 530 and a computer.

[0059] The tail gas treatment component is used to absorb the tail gas with alkali solution; the tail gas treatment component includes an absorption bottle 540 filled with alkali solution; the tail gas outlet of the data acquisition and analysis component is connected to the absorption bottle 540.

[0060] The dry gas outlet of the cooler 520 is connected to the analyzer 530 and the absorption bottle 540 respectively through the third three-way valve 130 , and a needle valve 140 is provided on the branch line connecting the cooler 520 and the absorption bottle 540 .

[0061] The method for using the dry desulfurization catalyst desulfurization efficiency testing system is as follows: First, a raw gas test is performed, in which the mixed gas passes through the raw gas flow branch 151 and enters the drying bottle 510. Then, a desulfurization test is performed, in which the mixed gas passes through the desulfurization reaction branch 152, flows through the humidifier and the desulfurization reactor 400, and enters the drying bottle 510. After being treated in the drying bottle 510 and the cooler 520, a portion of the dry gas enters the analyzer 530 for sulfur dioxide concentration measurement, and a portion directly enters the absorption bottle 540, under the control of the third three-way valve 130 and the needle valve 140. In the absorption bottle 540, the exhaust gas is absorbed by alkaline solution (sodium hydroxide or potassium hydroxide) and discharged into the atmosphere. When a desulfurization catalyst in a desulfurization reactor 400 needs to be regenerated, the corresponding solenoid valve and electric butterfly valve are closed, and the corresponding first electromagnetic flowmeter, first butterfly valve, third electromagnetic flowmeter, and second butterfly valve are opened. After regeneration is complete, the desulfurization test can be repeated. After the current desulfurization catalyst test is completed, turn off the flow controller and heating assembly, open the plug of the desulfurization catalyst filling port and pour out the desulfurization catalyst, then install fresh desulfurization catalyst and cover the plug, connect all pipelines, and then proceed to the next desulfurization catalyst test.

[0062] One of the usage scenarios of the dry desulfurization catalyst desulfurization efficiency detection device is use in the laboratory, in which case the three raw gas inlets 240 are respectively connected to the N2 gas cylinder, the O2 gas cylinder, and the SO2 gas cylinder. Another usage scenario is use at the construction site, in which case the three raw gas inlets 240 are respectively connected to different positions of the flue gas pipeline.

[0063] Example 2

[0064] Figure 4 Schematic diagram of the structure of the humidifier in the desulfurization efficiency detection system of the dry desulfurization catalyst of this embodiment.

[0065] Compared with Example 1, the dry desulfurization catalyst desulfurization efficiency detection system of this embodiment has the difference that a new type of humidifier is used, such as Figure 4 As shown, the humidifier includes a tank body 300 filled with water, a first heating mechanism 310 for heating the tank body 300 , a porous filler layer 330 , an atomizing mechanism 340 , an air inlet pipe 350 , a first control mechanism, a cleaning mechanism and a stirring mechanism 390 .

[0066] An air inlet and an air outlet are provided on the tank body 300 , a drain pipe 360 is provided at the bottom of the tank body 300 , and a first stop valve 361 is provided on the drain pipe 360 .

[0067] The first heating mechanism 310 includes a jacket 311 disposed outside the tank body 300 and at least two heating jackets 312 located between the jacket 311 and the outer wall of the tank body 300 and spaced apart from top to bottom.

[0068] The porous packing layer 330 is arranged below the liquid surface, and the four sides of the porous packing layer 330 are connected to the inner wall of the tank body 300; the porous packing layer 330 has an upper perforated plate, a lower perforated plate, and ceramic particles and / or polytetrafluoroethylene particles accumulated between the upper perforated plate and the lower perforated plate.

[0069] The atomizing mechanism 340 is disposed above the liquid surface and is used to atomize water. The water inlet of the atomizing mechanism 340 is connected to the drain pipe 360 through the circulation pipe 370 .

[0070] The air inlet pipe 350 is connected to the air inlet and extends to the bottom of the porous filler layer 330. The lower end of the air inlet pipe 350 is provided with air outlet holes 351 arranged at intervals from top to bottom.

[0071] The first control mechanism is used to control the humidity of the humidified gas discharged to the outside of the gas outlet. The first control mechanism includes a humidity sensor 320 for detecting the humidity of the humidified gas, an electric ball valve 371 provided on the circulation pipe 370, and a first controller for controlling the increase or decrease of the heating power of the first heating mechanism 310 and / or the opening and closing of the electric ball valve 371 based on the detection data of the humidity sensor 320.

[0072] The cleaning mechanism includes a scale cleaning agent pipeline 380 connected to the water inlet of the atomizing mechanism 340 , and a second stop valve 381 is provided on the scale cleaning agent pipeline 380 .

[0073] The stirring mechanism 390 is disposed at the bottom of the tank 300 .

[0074] Compared with Example 1, the first control mechanism can also control the operation of the atomization mechanism 340 by controlling the opening and closing of the electric ball valve 371, thereby being able to more accurately control the humidification degree.

[0075] The above describes the relevant contents of the embodiments of the inventions provided in this specification. Based on these descriptions, a person of ordinary skill in the art will be able to implement the embodiments of the inventions provided in this specification. Based on the above contents of the embodiments of the inventions provided in this specification, all other preferred implementations and embodiments obtained by a person of ordinary skill in the art without making any creative effort shall fall within the scope of protection of the embodiments of the inventions provided in this specification.

Claims

1. A humidifier for humidifying gas to be desulfurized, comprising a tank body (300) filled with water and a first heating mechanism (310) for heating the tank body (300), wherein the tank body (300) is provided with an air inlet and an air outlet, and is characterized in that: Also includes: A porous filler layer (330), the porous filler layer (330) is disposed below the liquid surface, and the periphery of the porous filler layer (330) is connected to the inner wall of the tank body (300); an atomizing mechanism (340), the atomizing mechanism (340) being disposed above the liquid surface and being used to atomize water; An air intake pipe (350) is connected to the air inlet and extends below the porous filler layer (330). The lower end of the air intake pipe (350) is provided with air outlet holes (351) arranged at intervals from top to bottom.

2. The humidifier according to claim 1, wherein: The first heating mechanism (310) comprises a jacket (311) disposed outside the tank body (300) and at least two heating jackets (312) located between the jacket (311) and the outer wall of the tank body (300) and arranged at intervals from top to bottom.

3. The humidifier according to claim 1, wherein: The porous filler layer (330) comprises an upper perforated plate, a lower perforated plate, and ceramic particles and / or polytetrafluoroethylene particles accumulated between the upper perforated plate and the lower perforated plate.

4. The humidifier according to claim 1, wherein: A drainage pipe is provided at the bottom of the tank body (300), and the water inlet of the atomizing mechanism (340) is connected to the drainage pipe via a circulation pipe (370). A first stop valve (361) is provided on the drainage pipe.

5. The humidifier according to claim 4, characterized in that: The invention also includes a first control mechanism for controlling the humidity of the humidified gas discharged to the outside of the gas outlet, wherein the first control mechanism includes a humidity sensor (320) for detecting the humidity of the humidified gas, an electric ball valve (371) provided on the circulation pipe (370), and a first controller for controlling the increase or decrease of the heating power of the first heating mechanism (310) and / or the opening and closing of the electric ball valve (371) according to the detection data of the humidity sensor (320).

6. The humidifier according to claim 1, wherein: The device further comprises a cleaning mechanism, wherein the cleaning mechanism comprises a scaling cleaning agent pipeline (380) connected to the water inlet of the atomizing mechanism (340), and a second stop valve (381) is provided on the scaling cleaning agent pipeline (380).

7. The humidifier according to claim 1, wherein: The invention also includes a stirring mechanism (390) arranged at the bottom of the tank body (300).

8. Dry desulfurization catalyst desulfurization efficiency detection system, characterized by: A humidifier according to any one of claims 1 to 7.

Images