Container type flue gas testing device

Abstract

The utility model belongs to the technical field of flue gas testing, and particularly relates to a container type flue gas testing device. According to the technology, a container is included, the container is internally divided into an equipment area, a center control and office area and an operation area, an equipment installation table is installed in the equipment area, and an operation table, an experiment device area and an instrument area are arranged on the equipment installation table; wherein the experimental device area and the instrument area are mounted on the equipment mounting table on the rear side of the operation table and are distributed left and right. The whole design is of a container structure, the structure is compact, attractive and elegant, the size is small, transportation is convenient, tests can be carried out in different regions and under different flue gas conditions according to actual needs, the utilization rate of the device is greatly improved, and rebuilding and reinvestment are avoided; meanwhile, the same device is used for testing under different flue gas conditions, and only flue gas is used as a variable, so that the test result difference caused by the test device difference is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of smoke test, in particular to a container type smoke test device. Background Art

[0002] The flue gas composition in different fields and industries varies greatly. The same flue gas fluctuates significantly due to differences in raw materials, process adjustments, personnel operations, environmental protection requirements, etc. Environmental protection technology needs to be "one size fits all" when purifying specific flue gas. This requires that environmental protection technology should be adjusted according to specific flue gas conditions to achieve efficient removal of pollutants, reduce operating costs, reduce accident frequency, and maximize energy conservation and consumption reduction, ultimately achieving economic efficiency, green and low-carbon pollution control measures. However, engineering practice shows that the time nodes of environmental protection process design and engineering commissioning are usually separated by several months or years, and there are many process parameters and they are closely related to each other. Any parameter adjustment will affect other operating data. Therefore, in the actual engineering operation process, there are often lagging process parameter adjustments, difficult adjustments, unnecessary human, financial and material investment, and even safety accidents caused by adjustment errors.

[0003] For example: 1) In the activated carbon desulfurization and denitrification process, when the SO2 concentration in the inlet flue gas fluctuates, resulting in fluctuations in the heat release of SO2 adsorption, in order to timely discharge the reaction heat from the system and take into account that the activated carbon is not excessively worn and the dust does not exceed the standard, it is necessary to adjust the appropriate activated carbon feeding speed; 2) In the SCR denitrification process, when the inlet NOx concentration fluctuates and the flue gas temperature fluctuates, in order to ensure that the outlet NOx and ammonia escape meet the emission standards, it is necessary to timely adjust the ammonia injection amount and flue gas temperature; 3) In the CO catalytic oxidation removal process, when CO fluctuates and the flue gas temperature fluctuates, in order to maintain the thermal balance of the system and avoid catalyst poisoning due to cold and hot fluctuations, it is necessary to timely adjust the thermal balance strategy. However, the adjustment of the above engineering process parameters often becomes complicated and difficult due to the lag of monitoring equipment and personnel feedback, which can easily bring various unknown hidden dangers. Therefore, it is of utmost importance to obtain the optimal strategy of environmental protection process parameters under specific flue gas conditions at a low cost, quickly and scientifically.

[0004] In engineering, the determination of the process parameters of the flue gas purification system is usually carried out by the demander at the beginning of construction. The design unit conducts engineering design based on the specific requirements. After the completion of the project, it is implemented according to the plan given by the designer. This model has the following problems: 1) Before the project is completed and put into production, the demander usually puts forward technical requirements based on experience values. There may be a large difference between the experience values ​​and the actual situation, and the theoretical engineering operation parameters are difficult to accurately guide the production process; 2) After the project is completed and put into production, with the changes in environmental protection requirements, raw materials and fuels, and operators, the process system no longer fully matches the technical requirements.

[0005] The emergence of the above problems requires timely acquisition of more optimized process operation strategies through some means during the engineering operation. However, in the engineering practice, dealing with such work mostly relies on the subjective experience of operators and lacks scientific and rapid technical means. Utility Model Content

[0006] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is: to provide a container-type flue gas testing device, which can perform rapid testing under real flue gas conditions to solve the problem of optimizing process parameters of the flue gas purification system during actual operation.

[0007] The container-type smoke test device comprises a container, which is divided into an equipment area, a central control and office area, and an operation area. An equipment installation table is installed in the equipment area, and an operation table, an experimental device area, and an instrument area are arranged on the equipment installation table at the rear side of the operation table, and the experimental device area and the instrument area are distributed on the left and right.

[0008] Furthermore, the experimental device area includes an exhaust fan, a flue main delivery pipe is installed at the air outlet end of the exhaust fan, at least one branch pipe is connected to the flue main delivery pipe, and each branch pipe is installed with a pretreatment reactor, a reactor, a condenser, a flow meter and a vacuum pump in sequence from the air inlet end to the air outlet end; analyzers are installed on the flue main delivery pipe between the branch pipe and the exhaust fan and on the branch pipe at the rear end of the vacuum pump outlet end.

[0009] Furthermore, the branch pipe between the pretreatment reactor and the reactor is connected with an injection pipe for other gas components.

[0010] Furthermore, pressure gauges are installed on the branch pipes before the air inlet end of the pretreatment reactor and after the air outlet end of the reactor.

[0011] Furthermore, the pretreatment reactor and the reactor are both provided with a preheating section and a reaction section, and are both equipped with thermometers for measuring the temperature of the preheating section, measuring the furnace body temperature of the pretreatment reactor and the reactor at both ends of the reaction section before and after the chemical reaction materials are added to the reaction section, and measuring the furnace reaction temperature of the pretreatment reactor and the reactor at both ends of the reaction section before and after the chemical reaction materials are added to the reaction section.

[0012] Furthermore, the flow meter and the smoke detection port connected to the analyzer are installed on the equipment installation table below the operating table.

[0013] Furthermore, there are four branch pipes.

[0014] Furthermore, a power cabinet and a storage area are provided on the equipment installation platform on both sides of the flow meter and the smoke detection port.

[0015] Furthermore, the main flue pipe and branch pipes are both provided with a heating and insulation layer for preventing flue gas condensation.

[0016] Furthermore, the pretreatment reactor and the reactor in the experimental device area are installed above the rear side of the operating table.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. The overall design is a container structure with a compact structure, beautiful appearance, small size and easy transportation. Tests can be carried out in different regions and under different flue gas conditions according to actual needs. The utilization rate of the device is greatly improved, avoiding re-construction and re-investment. At the same time, the same set of equipment is tested under different flue gas conditions, and the only variable is flue gas, which avoids differences in test results caused by differences in test equipment.

[0019] 2. An exhaust fan is installed inside the container to extract a large amount of flue gas, ensuring the representativeness of the test flue gas. The remaining flue gas from the test is returned to the production system, which meets the test requirements while avoiding direct discharge of flue gas to pollute the environment. A multi-channel reactor (pretreatment reactor and reactor installed on each branch pipe) can meet the requirements of conducting different types of tests at the same time, or different variable tests of the same type, greatly improving work efficiency.

[0020] 3. The test gas is composed of the original flue gas on site and specific component gas, which not only ensures that the test is carried out in a real gas environment, but also achieves the purpose of artificially simulating flue gas fluctuations, strengthening the reaction process, and identifying the relationship between specific flue gas components and flue gas purification effects. The test results are more diverse and the test is faster, which plays a good guiding role in engineering design and operation optimization.

[0021] 4. This device facilitates accurate flow and temperature control. By setting temperature sensors and pressure sensors, the chemical reaction process in the experiment can be indirectly fed back in real time through temperature changes and pressure changes, which plays a good guiding role in engineering planning and operation optimization.

[0022] 5. The flue gas heating unit (preheating section), pipeline heating and insulation (insulation of the flue main duct and branch pipes), and flue gas pretreatment unit (pretreatment reactor) are installed to realize the directional pretreatment of the original flue gas, create conditions for the planned test content, and expand the function of the test device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0024] Figure 1This is the area distribution map after looking down at the inside of the container;

[0025] Figure 2 Equipment distribution and installation diagram for the equipment area;

[0026] Figure 3 for Figure 2 Schematic diagram from top view;

[0027] Figure 4 for Figure 2 Schematic diagram from left side;

[0028] Figure 5 for Figure 2 Equipment flow chart in the experimental device area;

[0029] Figure 6 This is a schematic diagram of the container structure.

[0030] Figure numerals: 1. Equipment area 1.1. Operating table 1.2. Storage area 1.3. Experimental device area 1.4. Instrument area 1.5. Flue gas detection port 1.6. Flow meter 1.7. Power supply cabinet 1.8. Flue main conveying pipe 1.9. Heating and insulation layer 1.10. Pressure gauge 1.11. Exhaust fan 1.12. Chemical reaction material 1.13. Pretreatment reactor 1.14. Other gas component injection pipe 1.15. Branch pipe 1.16. Thermometer 1.17. Reactor 1.18. Condenser 1.19. Vacuum pump 1.20. Analyzer 2. Central control and office area 3. Operation area. DETAILED DESCRIPTION

[0031] The present disclosure is further described in detail below in conjunction with the accompanying drawings and implementations. It is understood that the specific implementations described herein are only used to explain the relevant content, rather than to limit the present disclosure. It should also be noted that, for ease of description, only the parts related to the present disclosure are shown in the accompanying drawings.

[0032] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] Example 1

[0034] The container-type smoke test device described in this embodiment includes a container, such as Figure 6 As shown. The container is a standard container for easy transportation, transfer and lifting. The length, width and height of the container are 6200mm×2240mm×2600mm respectively. The words "Containerized Smoke Test Device" are printed on one side of the container. The container is connected to water and electricity, and is equipped with basic functions such as exhaust fan ventilation, air conditioning and toxic gas alarm.

[0035] The container is divided into an equipment area 1, a central control and office area 2 and an operation area 3. Figure 1 shown.

[0036] The equipment installation table is installed in the equipment area 1, and the equipment installation table is provided with an operating table 1.1 (for convenient operation), an experimental device area 1.3 and an instrument area 1.4 (for installing temperature, pressure and flow meters); the experimental device area 1.3 and the instrument area 1.4 are installed on the equipment installation table at the rear of the operating table 1.1, and the experimental device area 1.3 and the instrument area 1.4 are distributed on the left and right. When assembling, Figures 2 to 4 Preferably, the instrument area 1.4 is located on the left side of the experimental device area 1.3.

[0037] This embodiment uses a four-channel reactor (that is, four branch pipes 1.15, four sets of pretreatment reactors 1.13 and reactors 1.17, etc.) as an example. When used, 2-channel, 5-channel, 8-channel or 10-channel reactors can also be set as needed. The equipment installation platform in the equipment area 1 in the container is an aluminum alloy frame as a whole.

[0038] The experimental device area 1.3 includes an exhaust fan 1.11, and a flue main delivery pipe 1.8 is installed at the air outlet of the exhaust fan 1.11. Four branch pipes 1.15 are connected to the flue main delivery pipe 1.8. A pretreatment reactor 1.13, a reactor 1.17, a condenser 1.18, a flow meter 1.6 and a vacuum pump 1.19 are installed on each branch pipe 1.15 from the air inlet end to the air outlet end. An analyzer 1.20 is installed on the flue main delivery pipe 1.8 between the branch pipe 1.15 and the exhaust fan 1.11 and on the branch pipe 1.15 at the rear end of the air outlet of the vacuum pump 1.19. Figure 5 For the convenience of operation and observation, the pretreatment reactor 1.13 and the reactor 1.17 are installed on the upper rear side of the operating table 1.1.

[0039] The flow meter 1.6 and the smoke detection port 1.5 connected to the analyzer 1.20 are installed on the equipment installation table below the operating table 1.1.

[0040] For a beautiful and reasonable structure, the condenser 1.18 and the vacuum pump 1.19 are placed inside the equipment installation platform behind the flow meter 1.6 and the smoke detection port 1.5.

[0041] A power cabinet 1.7 and a storage area 1.2 are provided on the equipment installation platform on both sides of the flow meter 1.6 and the smoke detection port 1.5. The storage function area can be used to place vulnerable and consumable parts of the equipment.

[0042] The branch pipe 1.15 between the pretreatment reactor 1.13 and the reactor 1.17 is connected with a pipe 1.14 for injecting other gas components.

[0043] Pressure gauges 1.10 are installed on the branch pipes 1.15 before the air inlet end of the pretreatment reactor 1.13 and after the air outlet end of the reactor 1.17.

[0044] The pretreatment reactor 1.13 and the reactor 1.17 are both provided with a preheating section and a reaction section. The pretreatment reactor 1.13 and the reactor 1.17 are both equipped with thermometers 1.16 for measuring the temperature of the preheating section, measuring the furnace body temperature of the pretreatment reactor 1.13 and the reactor 1.17 at both ends before and after the chemical reaction material 1.12 is added to the reaction section (the chemical reaction material 1.12 is not the structure of the pretreatment reactor 1.13 and the reactor 1.17 itself, but is the reactant added during the reaction), and measuring the reaction temperature in the furnace of the pretreatment reactor 1.13 and the reactor 1.17 at both ends before and after the chemical reaction material 1.12 is added to the reaction section.

[0045] The flue main delivery pipe 1.8 and the branch pipe 1.15 are both provided with a heat tracing insulation layer 1.9 for preventing flue gas condensation, thereby affecting the accuracy of the experiment.

[0046] The preheating section integrated at the entrance of the pretreatment reactor 1.13 and the reactor 1.17 is used for precise control of the flue gas temperature in different processes, and to realize experimental research work of combined processes (such as: pre-activated carbon desulfurization + post-low temperature SCR denitration combined process; or pre-CO catalytic oxidation removal + post-medium temperature SCR denitration combined process); the pretreatment reactor 1.13 provides specific pre-treatment for the special requirements of the reactor 1.17 for flue gas (such as: pre-dechlorination of flue gas before low temperature CO catalytic oxidation removal, to examine the effect of chloride ions in flue gas on low temperature CO catalytic oxidation catalyst; or pre-deoxygenation of flue gas before CO reduction of NOx denitration, to examine the effect of oxygen concentration in flue gas on CO reduction of NOx). When the combined process test is not carried out, or the flue gas pretreatment is not required, the pretreatment reactor 1.13 or the reactor 1.17 can be used for testing alone, and the other furnace body does not place the chemical reaction material 1.12 and is only used as a pipeline.

[0047] The other gas component injection pipe 1.14 provided at the connection between the pretreatment reactor 1.13 and the reactor 1.17 is used to artificially adjust the flue gas composition and examine the influence of one or several components on the subsequent reaction process. For example, when examining the maximum acceptable limit of the maximum concentration of SO2 in the flue gas for activated carbon, SO2 can be artificially added. At this time, in addition to ensuring the test requirements for SO2 concentration, it also ensures that the test is carried out under real flue gas, fully ensuring the reliability of the test results; for example, in order to examine the water and sulfur resistance of the low-temperature SCR catalyst and the service life of the catalyst, a certain concentration of water vapor and SO2 can be artificially added, which fully simulates the actual influence of flue gas fluctuations based on real flue gas conditions on the application of the catalyst, greatly broadens the function of the test equipment, and can achieve fast, accurate and comprehensive data acquisition for guiding the engineering production and operation process.

[0048] When the pretreatment reactor 1.13 and the reactor 1.17 need to place the chemical reaction material 1.12, Figure 5 As shown, the chemical reaction material 1.12 is placed in the middle of the constant temperature zone of the reaction section. The constant temperature zone is controlled by two-stage heating to achieve precise control of the reaction temperature. Thermocouples are symmetrically distributed close to the chemical reaction material 1.12 to accurately monitor the endothermic and exothermic effects of the chemical reaction process. Pressure sensors are set before the pretreatment reactor 1.13 and after the reactor 1.17 to monitor the pressure changes in the pipeline and provide timely feedback on abnormal conditions and pressure changes during the reaction process.

[0049] The flue gas condenser 1.18 connected to the reactor 1.17 is used for condensing water in the flue gas to prevent the water-containing flue gas from condensing in the flow meter 1.6 and affecting the flow meter measurement; at the same time, when the flue gas analyzer 1.20 is selected to test the water-free flue gas, the equipment cost is low and the selection range is wide, which greatly reduces the difficulty of popularizing and applying the device.

[0050] In order to adjust the test air speed, widen the test adjustable range, and expand the test function of the device, this embodiment adopts a corrosion-resistant flow meter 1.6 and a corrosion-resistant vacuum pump 1.19 for accurately controlling the test flue gas volume.

[0051] In order to improve the degree of automation, an automatic control system is set up. All the solenoid valve switches, heating on and off, flow control, temperature / pressure / flow display and recording, flue gas composition data display before and after the experiment, injection flow and recording of other gas components into the injection pipe 1.14, equipment abnormality alarm and other functions involved in the device are integrated into the automatic control system. The device has a high degree of automation, and the equipment safety and reliability of experimental data are greatly improved, while reducing the labor intensity of the experimenters.

[0052] When the above embodiment is operated, the exhaust fan 11 extracts 50-100m3 of actual smoke. 3 / h is used to provide real flue gas for the subsequent four-channel reactor, and the four-channel reactor extracts the remaining flue gas and returns it to the flue main conveying pipe 1.8.

[0053] Each branch pipe 1.15 extracts 5-50L / min flue gas through a rear vacuum pump 1.19, and passes through the pretreatment reactor 1.13, reactor 1.17, condenser 1.18, flow meter 1.6, vacuum pump 1.19 in sequence, and the outlet (flue gas detection port 1.5) is connected to the analyzer 1.20. The original flue gas temperature is usually around 80℃~150℃. The pretreatment reactor 1.13 is set according to the test requirements (usually 120℃~350℃). After the flue gas is discharged from the pretreatment reactor 1.13, other component gases are added to the other gas component injection pipe 1.14 according to the requirements and enter the reactor 1.15. The temperature of the reactor 1.15 is set according to the test requirements (usually 120℃~350℃). After the flue gas is discharged from the reactor, it enters the condenser 1.18. The condenser 1.18 reduces the flue gas temperature to below 60℃. After the water in the flue gas is condensed, the dry flue gas passes through the flow meter 1.6 and is finally analyzed by the analyzer 1.20.

[0054] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments / methods or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments / methods or examples described in this specification and the features of the different embodiments / methods or examples, unless they are contradictory.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A container-type smoke test device, comprising a container, characterized in that: The container is divided into an equipment area (1), a central control and office area (2) and an operating area (3); an equipment installation table is installed in the equipment area (1), and an operating table (1.1), an experimental device area (1.3) and an instrument area (1.4) are arranged on the equipment installation table; the experimental device area (1.3) and the instrument area (1.4) are installed on the equipment installation table at the rear side of the operating table (1.1), and the experimental device area (1.3) and the instrument area (1.4) are distributed on the left and right sides; The experimental device area (1.3) comprises an exhaust fan (1.11), a flue main delivery pipe (1.8) is installed at the air outlet end of the exhaust fan (1.11), at least one branch pipe (1.15) is connected to the flue main delivery pipe (1.8), and each branch pipe (1.15) is installed with a pretreatment reactor (1.13), a reactor (1.17), a condenser (1.18), a flow meter (1.6) and a vacuum pump (1.19) in sequence from the air inlet end to the air outlet end; an analyzer (1.20) is installed on the flue main delivery pipe (1.8) between the branch pipe (1.15) and the exhaust fan (1.11) and on the branch pipe (1.15) at the rear end of the air outlet end of the vacuum pump (1.19).

2. The containerized smoke test device according to claim 1 is characterized in that: The branch pipe (1.15) between the pretreatment reactor (1.13) and the reactor (1.17) is connected with another gas component injection pipe (1.14).

3. The containerized smoke test device according to claim 2 is characterized in that: Pressure gauges (1.10) are installed on the branch pipes (1.15) before the air inlet end of the pretreatment reactor (1.13) and after the air outlet end of the reactor (1.17).

4. The containerized smoke test device according to claim 3 is characterized in that: The pretreatment reactor (1.13) and the reactor (1.17) are both provided with a preheating section and a reaction section. The pretreatment reactor (1.13) and the reactor (1.17) are both provided with thermometers (1.16) for measuring the temperature of the preheating section, the furnace body temperature of the pretreatment reactor (1.13) and the reactor (1.17) before and after the chemical reaction material (1.12) is added to the reaction section, and the reaction temperature in the pretreatment reactor (1.13) and the reactor (1.17) before and after the chemical reaction material (1.12) is added to the reaction section.

5. The containerized smoke test device according to claim 4 is characterized in that: The flow meter (1.6) and the smoke detection port (1.5) connected to the analyzer (1.20) are installed on the equipment installation table below the operating table (1.1).

6. The containerized smoke test device according to claim 1 is characterized in that: There are four branch pipes (1.15).

7. The containerized smoke test device according to claim 5 is characterized in that: A power cabinet (1.7) and a storage area (1.2) are provided on the equipment installation platform on both sides of the flow meter (1.6) and the smoke detection port (1.5).

8. The containerized smoke test device according to claim 1 is characterized in that: The flue main conveying pipe (1.8) and the branch pipe (1.15) are both provided with a heat tracing insulation layer (1.9) for preventing flue gas condensation.

9. The containerized smoke test device according to claim 1, characterized in that: The pretreatment reaction furnace (1.13) and the reaction furnace (1.17) in the experimental device area (1.3) are installed above the rear side of the operating platform (1.1).

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