Desulfurization efficiency detection system for dry desulfurization catalyst

Abstract

The utility model discloses a desulfurization efficiency detection system for a dry desulfurization catalyst, and solves the technical problems of low automation degree and low detection efficiency in the prior art. The detection system comprises: a gas mixing assembly; the raw gas circulation-desulfurization reaction assembly comprises a raw gas circulation branch and a desulfurization reaction branch which are connected in parallel; the desulfurization reaction branch comprises a humidifier and a desulfurization reactor; the number of the desulfurization reactors is at least two; the heating assembly comprises a hot medium pipeline connected with the hot medium inlet and a cold medium pipeline connected with the cold medium outlet; the regeneration assembly comprises a regenerated liquid pipeline connected with the regenerated liquid inlet and a regenerated acid pipeline connected with the regenerated acid outlet; and the control assembly comprises a first control mechanism for controlling the humidity of the humidifying gas, a second control mechanism for controlling the flow direction of the humidifying gas, a third control mechanism for controlling the operation of the heating assembly and a fourth control mechanism for controlling the operation of the regeneration assembly.

Description

Technical Field

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

[0002] As a known dry desulfurization technology with particularly promising application prospects, the basic principle of the catalytic flue gas desulfurization technology is as follows: 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 form sulfuric acid, ultimately achieving the desulfurization effect of removing sulfur dioxide and sulfuric acid mist.

[0003] In the catalytic flue gas desulfurization technology, the reasonable 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 engineering commissioning cycle can be significantly reduced, and the desulfurization operation effect can be improved. However, currently, most of the detection devices for the desulfurization efficiency of activated carbon in experimental institutions have the disadvantages of being bulky and having limited usage scenarios, resulting in a single use of the detection device, being only suitable for use under ideal laboratory conditions and having a large deviation from actual engineering applications, and requiring a long commissioning cycle when put into actual engineering applications.

[0004] The applicant of this application submitted a dry desulfurization catalyst desulfurization efficiency detection device with the application number 2024215559671. Its structure is simple and ingenious, with low cost, convenient use, and integrates many advantages such as process simulation, parameter control, and safety detection, providing important technical support for the development and performance evaluation of dry desulfurization catalysts. However, the automation level of this detection device is relatively low, and it is difficult to achieve high detection efficiency when using multiple desulfurization reactors. In addition, the current humidification method of the humidifier is to introduce the gas to be desulfurized into water. This humidification method has low humidification efficiency, and the humidification effect is difficult to meet the requirements of extremely high or low humidity. Summary of the Utility Model

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

[0006] The second object of the utility model is to provide a humidifier and a detection system for the desulfurization efficiency of dry desulfurization catalysts to solve the technical problems of low humidification efficiency and the difficulty of the humidification effect to meet the requirements of extremely high or low humidity in the prior art.

[0007] To achieve the above first object, the utility model provides a detection system for the desulfurization efficiency of dry desulfurization catalysts, and the technical solution is as follows:

[0008] Dry desulfurization catalyst desulfurization efficiency detection system, comprising: a gas mixing assembly, the gas mixing assembly includes a mixer, the mixer has at least three raw gas inlets and one mixed gas outlet; a raw gas flow-through desulfurization reaction assembly, the raw gas flow-through desulfurization reaction assembly includes a parallel-connected raw gas flow branch and a desulfurization reaction branch; the desulfurization reaction branch includes a humidifier and a desulfurization reactor; the desulfurization reactor has a desulfurization catalyst packing layer, a humidified gas inlet, a desulfurized gas outlet, a regeneration liquid inlet, a regeneration acid outlet, a heat medium inlet and a cold medium outlet; there are at least two desulfurization reactors; a heating assembly, the heating assembly includes a heat medium pipeline connected to the heat medium inlet and a cold medium pipeline connected to the cold medium outlet; a regeneration assembly, the regeneration assembly includes a regeneration liquid pipeline connected to the regeneration liquid inlet and a regeneration acid pipeline connected to the regeneration acid outlet; a control assembly, the control assembly 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 assembly, and a fourth control mechanism for controlling the operation of the regeneration assembly.

[0009] Therefore, the dry desulfurization catalyst desulfurization efficiency detection system of the present utility model mainly 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 relatively real test environment for the performance evaluation of desulfurization catalysts. (2) It can be used in the laboratory. At this time, at least three raw gas inlets are respectively connected to N 2 gas cylinders, O 2 gas cylinders, SO 2 gas cylinders to simulate actual process conditions, or it can be directly used at the engineering site. At this time, at least three raw gas inlets are respectively connected to different positions of the flue gas pipeline to directly use industrial flue gas as the gas source, which can provide more accurate reference suggestions for the parameters of actual engineering operation and avoid unnecessary waste in engineering commissioning. (3) The structures of the components are simple, easy to disassemble and assemble, convenient to move between different detection locations, and have strong practicability. (4) Desulfurization process parameters such as temperature, humidity, regeneration, etc. can be precisely controlled, which is conducive to deeply exploring the influence of different desulfurization process parameters on the desulfurization efficiency of desulfurization catalysts. (5) The degree of automation is high. The four control mechanisms work together, which can significantly improve the detection efficiency when multiple desulfurization reactors are used. (6) It can be compatible with different types of dry desulfurization catalysts, providing a test platform with strong versatility for the development of desulfurization technology.

[0010] As a further improvement to the desulfurization efficiency detection system of the dry desulfurization catalyst described above: the humidifier has a first heating mechanism; the first control mechanism includes a humidity sensor for detecting the humidity of the humidifying gas and a first controller for controlling the rise and fall of the heating power of the first heating mechanism according to the detection data of the humidity sensor; the second control mechanism includes a solenoid valve provided on the humidifying gas pipeline and an electric butterfly valve provided on the desulfurized gas pipeline. Thus, the structures of the first control mechanism and the second control mechanism are simple and easy to install, realizing the control of the humidity and flow direction of the humidifying gas.

[0011] As a further improvement to the desulfurization efficiency detection system of the dry desulfurization catalyst described above: the heating assembly includes a second heating mechanism; the third control mechanism includes a temperature sensor and a second controller. The temperature sensor includes a first temperature sensor for detecting the temperature of the humidifying gas and / or a second temperature sensor for detecting the temperature of the cold medium. The second controller controls the rise and fall of the heating power of the first heating mechanism and / or the second heating mechanism according to the detection data of the temperature sensor. Thus, the structure of the third control mechanism is simple and easy to install, realizing the control of the operation of the heating assembly.

[0012] As a further improvement to the desulfurization efficiency detection system of the dry desulfurization catalyst described above: 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 medium and the cold medium according to the number and position of the desulfurization reactors used, realizing the control of the action object of the heating assembly.

[0013] As a further improvement to the desulfurization efficiency detection system of the dry desulfurization catalyst described above: 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 provided on the regeneration liquid pipeline and a fourth electromagnetic flowmeter and a fourth butterfly valve provided on the regeneration acid pipeline. Thus, the structure of the fourth control mechanism is simple and easy to install, realizing the control of the action object of the regeneration assembly.

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

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

[0016] As a further improvement of the dry desulfurization catalyst desulfurization efficiency detection system described above: it further includes: a cooling and water removal assembly, which is used to cool and dry the raw gas or the desulfurized gas output from the raw gas flow-through - desulfurization reaction assembly; a data acquisition and analysis assembly, which is used to detect the sulfur dioxide content of the dry gas output from the cooling and water removal assembly; and a tail gas treatment assembly, which is used to perform alkali solution absorption treatment on the tail gas. Thus, the detection accuracy is improved, the emission risk is reduced, and the overall safety is enhanced.

[0017] As a further improvement of the dry desulfurization catalyst desulfurization efficiency detection system described above: the input ends of the raw gas flow-through branch and the desulfurization reaction branch are connected to the gas mixing assembly through a first three-way valve, and the output ends of the raw gas flow-through branch and the desulfurization reaction branch are connected to the cooling and water removal assembly through a second three-way valve. Thus, the structure is simple and the disassembly and assembly are convenient.

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

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

[0020] A humidifier, which is used to humidify the gas to be desulfurized, includes a tank filled with water and a first heating mechanism for heating the tank. The tank is provided with an air inlet and an air outlet, and further includes: a porous packing layer, which is arranged below the liquid level and whose periphery is connected to the inner wall of the tank; an atomization mechanism, which is arranged above the liquid level and is used to atomize water; an air inlet pipeline, which is connected to the air inlet and extends below the porous packing layer, and the lower end of the air inlet pipeline is provided with air outlet holes arranged at intervals from top to bottom.

[0021] Therefore, the humidifier of the present utility model has the following advantages: (1) The particulate matter 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; when the gas passes through the packing layer, it is subject to resistance, which can extend the residence time of the gas in the liquid, enabling the gas to absorb more moisture and thus increasing its humidity; the packing layer can evenly distribute the gas, reducing the non-uniformity of gas flow, contributing to the full contact between the gas and the liquid, and improving the humidification efficiency; when the gas passes through the packing layer, many small bubbles are formed, and these bubbles continuously contact the liquid during the rising process in the liquid, further increasing the humidity of the gas. (2) The atomization mechanism disperses the 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 generation rate of water vapor; the water vapor generated by atomization can be more evenly distributed in the gas, contributing to improving the overall humidification effect. (3) The lower end of the intake 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 enhancing the humidification efficiency.

[0022] As a further improvement of the above humidifier: The first heating mechanism includes a jacket provided outside the tank body and at least two heating sleeves located between the jacket and the outer wall of the tank body and arranged at intervals from top to bottom. Thus, the number of operating heating sleeves can be controlled according to the humidity requirement.

[0023] As a further improvement of the above humidifier: The porous packing layer has an upper orifice plate, a lower orifice plate, and ceramic particles and / or polytetrafluoroethylene particles stacked between the upper orifice plate and the lower orifice plate. Thus, the structure is simple and the corrosion resistance is good.

[0024] As a further improvement of the above humidifier: A drain pipe is provided at the bottom of the tank body, the water inlet of the atomization mechanism is connected to the drain pipe through a circulation pipe, and a first stop valve is provided on the drain pipe. Thus, the water in the tank body is directly used as the atomization water source, making the atomized water droplets have a relatively high temperature, thereby enhancing the humidification efficiency.

[0025] As a further improvement of the above humidifier: It further includes a first control mechanism for controlling the humidity of the humidified gas discharged outside the air 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 pipe, and a first controller for controlling the rise and fall of the heating power of the first heating mechanism and / or the opening and closing of the electric ball valve according to the detection data of the humidity sensor. Thus, the structure of the first control mechanism is simple, easy to install, and can realize the humidity control of the humidified gas.

[0026] As a further improvement of the above humidifier: It further includes a scale cleaning agent pipeline connected to the water inlet of the atomization mechanism, and a second stop valve is provided on the scale cleaning agent pipeline. Thus, the atomization mechanism can be used to atomize the scale cleaning agent, reducing the dosage of the scale cleaning agent and improving the scale cleaning effect.

[0027] As a further improvement of the above humidifier: It further includes a stirring mechanism provided at the bottom of the tank body. Thus, the uniformity of gas-liquid distribution is further improved, and the humidification efficiency is enhanced.

[0028] The dry desulfurization catalyst desulfurization efficiency detection system has the above humidifier.

[0029] The following further describes the embodiments of the invention provided in this specification in conjunction with the drawings and specific implementation manners. The 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. Description of the Drawings

[0030] The drawings forming a part of the embodiments of the invention provided in this specification are used to assist in understanding the embodiments of the invention provided in this specification. The content provided in the drawings and the related descriptions in the embodiments of the invention provided in this specification can be used to explain the embodiments of the invention provided in this specification, but do not constitute an improper limitation to the embodiments of the invention provided in this specification. In the drawings:

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

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

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

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

[0035] The relevant markings 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 - Intake pipeline, 351 - Air outlet hole, 360 - Drain pipe, 361 - First stop valve, 370 - Circulation pipeline, 371 - Electric ball valve, 380 - Fouling cleaning agent pipeline, 381 - Second stop valve, 390 - Stirring mechanism, 400 - Desulfurization reactor, 410 - Second outer tube, 420 - Second inner tube, 421 - Regenerated acid outlet, 422 - Regenerated liquid inlet, 423 - Porous supporting plate, 430 - Second spiral tube, 440 - Desulfurization catalyst packing layer, 450 - Humidified 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 - Regenerated liquid storage tank, 920 - Regenerated acid storage tank. Detailed implementation manners

[0037] The following clearly and completely describes the embodiments of the invention provided in this specification in conjunction with the accompanying drawings. Those 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 particularly noted that:

[0038] In the embodiments of the invention provided in this specification, the technical solutions and technical features provided in each part including the following descriptions can be combined with each other without conflict.

[0039] In addition, the embodiments of the invention provided in this specification involved in the following description are generally only a partial embodiment rather than all embodiments of the embodiments of the invention provided in this specification. Therefore, based on the embodiments in the embodiments of the invention provided in this specification, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope protected by the embodiments of the invention provided in this specification.

[0040] Regarding the terms and units in the embodiments of the invention provided in this specification: The terms "comprise", "include", "have" and any variations thereof in the specification, claims and relevant parts of the embodiments of the invention provided in this specification are intended to cover non-exclusive inclusion. In addition, other relevant terms and units in the embodiments of the invention provided in this specification can be reasonably explained based on the relevant content of the embodiments of the invention provided in this specification.

[0041] Embodiment 1

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

[0043] As Figure 1 shown, the desulfurization efficiency detection system of the dry desulfurization catalyst includes a gas mixing assembly, a raw gas flow - desulfurization reaction assembly, a heating assembly, a regeneration assembly, a control assembly, a cooling and water removal assembly, a data acquisition and analysis assembly, and a tail gas treatment assembly.

[0044] The gas mixing assembly includes a mixer 200, a flow controller, and a flow display instrument. The mixer 200 has three raw gas inlets 240 and one mixed gas outlet 250; the flow controllers 260 and the flow display instruments are in three groups and are respectively connected to the three raw gas inlets 240. The flow controller 260 can but is not limited to adopt the D07 - 19 type mass flow controller of Beijing Huacheng Electronics Co., Ltd. (formerly known as Beijing Sevenstar Huachuang Flowmeter Co., Ltd.), and the flow display instrument can but is not limited to adopt the D08 - 1F single - channel display instrument of 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 provided on the lower side wall of the first outer tube 210 and are equally spaced. The mixed gas outlet 250 is provided 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 inside 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 then connected to the raw gas flow - desulfurization reaction assembly.

[0046] The raw gas flow - desulfurization reaction assembly includes a raw gas flow branch 151 and a desulfurization reaction branch 152 connected in parallel. The input ends of the raw gas flow branch 151 and the desulfurization reaction branch 152 are connected to the gas mixing assembly through a first three - way valve 110, and the output ends of the raw gas flow branch 151 and the desulfurization reaction branch 152 are connected to the cooling and water - removing assembly through 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, and the first water bath has a first heating mechanism 310.

[0048] There are four desulfurization reactors 400, which can be used alone or 2 - 4 of them can be operated in parallel at the same time. 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 heat medium inlet 470, and a cold medium outlet 480. As Figure 4As shown in the figure, 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. A humidifying gas inlet 450, a heat medium inlet 470 connected to the heating assembly, and a cold medium outlet 480 are provided on the second outer tube 410. Inside 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; a regeneration liquid inlet 422 (also serving as a desulfurization catalyst filling port) and a desulfurized gas outlet 460 are provided on the tube body of the upper part of the second inner tube 420 that extends beyond the second outer tube 410; a regeneration acid outlet 421 is provided on the tube body of the lower part of the second inner tube 420 that extends beyond the second outer tube 410. 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 side wall of the lower part of the second inner tube 420 and is in communication with the inside of the second inner tube 420, and the upper end of the second spiral tube 430 passes through the humidifying gas inlet 450 on the side wall of the upper part of the first outer tube 210 and is then connected to the humidifying gas outlet of the humidifying bottle. The porous support plate 423 is provided at the lower part inside the second inner tube 420, and the desulfurization catalyst packing layer is located above the porous support plate 423.

[0049] Both the mixer 200 and the desulfurization reactor 400 are made of quartz and are provided with a conical bottom support at the bottom.

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

[0051] The regeneration assembly 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; a second liquid level gauge is provided in the regeneration acid storage tank 920.

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

[0053] The first control mechanism includes a humidity sensor 320 for detecting the humidity of the humidifying gas and a first controller for controlling the increase and 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 an electromagnetic valve 610 provided on the humidifying gas pipeline and an electric butterfly valve 620 provided on the desulfurized gas pipeline.

[0055] The third control mechanism includes a temperature sensor and a second controller. The temperature sensor includes a first temperature sensor 710 for detecting the temperature of the humidifying gas and / or a second temperature sensor 720 for detecting the temperature of the cold medium. The second controller controls the increase and decrease of the heating power of the first heating mechanism 310 and / or the second heating mechanism 770 according to the detection data of the temperature sensor. The third control mechanism further 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 further includes a concentration sensor 850 for detecting the acid concentration of the regeneration acid, a fifth butterfly valve 860 and a ball valve 870 provided on the drain pipe, and a third controller for controlling the flow direction of the regeneration acid according to the detection data of the concentration sensor 850.

[0057] The cooling and water removal assembly is used for cooling and drying the raw gas output from the raw gas flow-through desulfurization reaction assembly or the desulfurized gas. The cooling and water removal assembly includes a drying bottle 510 and a cooler 520 connected in sequence. The drying bottle 510 uses a spherical glass cold trap, and the glass cold trap is placed in an ice-water bath. The cooler 520 can but is not limited to using the CS-5A type electronic condenser of Fujian Longyan Xianzhuo Technology Co., Ltd.

[0058] The data acquisition and analysis assembly is used for detecting the sulfur dioxide content of the dry gas output from the cooler 520. The data acquisition and analysis assembly includes an analyzer 530 and a computer. The analyzer 530 can but is not limited to using the Gasboard-3000 type flue gas analyzer of Hubei Ruiyi Automatic Control System Co., Ltd.

[0059] The tail gas treatment assembly is used for treating the tail gas by alkali solution absorption. The tail gas treatment assembly includes an absorption bottle 540 filled with alkali solution. The tail gas outlet of the data acquisition and analysis assembly 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 a 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 usage method of the dry desulfurization catalyst desulfurization efficiency detection system is as follows: First, perform the raw gas detection. At this time, make the mixed gas enter the drying bottle 510 through the raw gas flow branch 151. Then, perform the desulfurization detection. At this time, make the mixed gas pass through the desulfurization reaction branch 152 and flow through the humidifier and the desulfurization reactor 400 and then enter the drying bottle 510. The dried gas after being processed by the drying bottle 510 and the cooler 520, under the control of the third three-way valve 130 and the needle valve 140, part of it enters the analyzer 530 for sulfur dioxide concentration measurement, and part of it directly enters the absorption bottle 540. The tail gas is absorbed by the alkaline solution (sodium hydroxide or potassium hydroxide) in the absorption bottle 540 and then discharged into the atmosphere. When a certain desulfurization reactor 400 needs to regenerate the desulfurization catalyst, close the corresponding solenoid valve and electric butterfly valve, open the corresponding first electromagnetic flowmeter, first butterfly valve, third electromagnetic flowmeter and second butterfly valve. After the regeneration is completed, the desulfurization detection can be repeated. After the current desulfurization catalyst test is completed, close the flow controller and the heating component, 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 the pipelines, and then the next desulfurization catalyst test can be carried out.

[0062] One of the usage scenarios of the dry desulfurization catalyst desulfurization efficiency detection device is in the laboratory. At this time, the three raw gas inlets 240 are respectively connected to the N 2 gas cylinder, O 2 gas cylinder, SO 2 gas cylinder. Another usage scenario is in the engineering site. At this time, the three raw gas inlets 240 are respectively connected to different positions of the flue gas pipeline.

[0063] Embodiment 2

[0064] Figure 4 It is a schematic structural diagram of the humidifier in the dry desulfurization catalyst desulfurization efficiency detection system of this embodiment.

[0065] Compared with Embodiment 1, the difference of the dry desulfurization catalyst desulfurization efficiency detection system of this embodiment is that a new type of humidifier is adopted. As Figure 4 shown, the humidifier includes a tank body 300 filled with water, a first heating mechanism 310 for heating the tank body 300, a porous packing layer 330, an atomization mechanism 340, an intake pipe 350, a first control mechanism, a cleaning mechanism and a stirring mechanism 390.

[0066] The tank body 300 is provided with an air inlet and an air outlet. 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 provided outside the tank body 300 and at least two heating sleeves 312 arranged at intervals from top to bottom between the jacket 311 and the outer wall of the tank body 300.

[0068] The porous packing layer 330 is arranged below the liquid level, and the periphery of the porous packing layer 330 is 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 stacked between the upper perforated plate and the lower perforated plate.

[0069] The atomizing mechanism 340 is arranged above the liquid level, and the atomizing mechanism 340 is used for atomizing water; the water inlet of the atomizing mechanism 340 is connected to the drain pipe 360 through a circulating pipe 370.

[0070] The air inlet pipe 350 is connected to the air inlet and extends below the porous packing layer 330, and 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 for controlling the humidity of the humidified gas discharged outside the air outlet. The first control mechanism includes a humidity sensor 320 for detecting the humidity of the humidified gas, an electric ball valve 371 arranged on the circulating pipe 370, and a first controller for controlling the increase and 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.

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

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

[0074] Compared with Embodiment 1, the first control mechanism can also control the operation of the atomizing mechanism 340 by controlling the opening and closing of the electric ball valve 371, so as to more accurately control the humidification degree.

[0075] The above describes the relevant content of the embodiments of the invention provided in this specification. Those of ordinary skill in the art will be able to implement the embodiments of the invention provided in this specification based on these descriptions. Based on the above content of the embodiments of the invention provided in this specification, all other preferred embodiments and examples obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the embodiments of the invention provided in this specification.

Claims

1. Dry desulfurization catalyst desulfurization efficiency detection system, characterized by: include: A gas mixing assembly, the gas mixing assembly comprising a mixer (200), the mixer (200) having at least three raw gas inlets (240) and a mixed gas outlet (250); A raw gas circulation-desulfurization reaction component, the raw gas circulation-desulfurization reaction component comprises a raw gas circulation branch (151) and a desulfurization reaction branch (152) connected in parallel; the desulfurization reaction branch (152) comprises a humidifier and a desulfurization reactor (400); the desulfurization reactor (400) comprises 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); the desulfurization reactor (400) is at least two; A heating assembly, the heating assembly comprising a hot medium pipeline connected to the hot medium inlet (470) and a cold medium pipeline connected to the cold medium outlet (480); a regeneration assembly, the regeneration assembly comprising a regeneration liquid pipeline connected to the regeneration liquid inlet (422) and a regeneration acid pipeline connected to the regeneration acid outlet; A control component, 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.

2. The dry desulfurization catalyst desulfurization efficiency detection system according to claim 1, characterized in that: The humidifier has a first heating mechanism (310); 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); the second control mechanism includes a solenoid valve (610) arranged on the humidified gas pipeline and an electric butterfly valve (620) arranged on the desulfurized gas pipeline.

3. The dry desulfurization catalyst desulfurization efficiency detection system according to claim 2, characterized in that: The heating component includes a second heating mechanism (770); the third control mechanism includes a temperature sensor and a second controller, the temperature sensor includes 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 the second controller controls the heating power of the first heating mechanism (310) and / or the second heating mechanism (770) to increase or decrease according to the detection data of the temperature sensor.

4. The dry desulfurization catalyst desulfurization efficiency detection system according to claim 3, characterized in that: The third control mechanism further comprises a first electromagnetic flowmeter (730) and a first butterfly valve (740) arranged on the hot medium pipeline, and a second electromagnetic flowmeter (750) and a second butterfly valve (760) arranged on the cold medium pipeline.

5. The dry desulfurization catalyst desulfurization efficiency detection system according to claim 1, characterized in that: The regeneration component includes a regeneration liquid storage tank (910) and a regeneration acid storage tank (920); the fourth control mechanism includes a third electromagnetic flowmeter (810) and a third butterfly valve (820) arranged on the regeneration liquid pipeline, and a fourth electromagnetic flowmeter (830) and a fourth butterfly valve (840) arranged on the regeneration acid pipeline.

6. The dry desulfurization catalyst desulfurization efficiency detection system according to claim 5, characterized in that: The regenerated acid storage tank (920) has a drain pipe; the fourth control mechanism also includes a concentration sensor (850) for detecting the acid concentration of the regenerated acid, a fifth butterfly valve (860) and a ball valve (870) arranged on the drain pipe, and a third controller for controlling the flow direction of the regenerated acid according to the detection data of the concentration sensor (850).

7. The dry desulfurization catalyst desulfurization efficiency detection system according to claim 5, characterized in that: A first liquid level meter is provided in the regeneration liquid storage tank (910); and a second liquid level meter is provided in the regeneration acid storage tank (920).

8. The dry desulfurization catalyst desulfurization efficiency detection system according to claim 1, characterized in that: Also includes: A cooling and dehydration component, which is used to cool and dry the raw gas or desulfurized gas output by the raw gas circulation-desulfurization reaction component; A data acquisition and analysis component, wherein the data acquisition and analysis component is used to detect the sulfur dioxide content of the dry gas output by the cooling and water removal component; A tail gas treatment component is used to absorb the tail gas with alkali liquid.

9. The dry desulfurization catalyst desulfurization efficiency detection system according to claim 8, characterized in that: 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).

10. The dry desulfurization catalyst desulfurization efficiency detection system according to claim 8, characterized in that: The gas mixing component also includes a flow controller (260) and a flow display instrument arranged on the raw gas inlet pipeline (350); the cooling and dehydrating component includes a drying bottle (510) and a cooler (520) connected in sequence; the dry gas outlet of the cooling and dehydrating component is connected to the data acquisition and analysis component and the tail gas treatment component respectively through a third three-way valve (130), and a needle valve (140) is provided on the branch connecting the cooling and dehydrating component and the tail gas treatment component; the tail gas outlet of the data acquisition and analysis component is connected to the tail gas treatment component.

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