A kind of sulphur recovery equipment fault detection device and fault monitoring method

Abstract

The present invention provides a fault detection device and a fault monitoring method for sulfur recovery equipment, the fault detection device comprises: a desulfurization tower, a regeneration tower, a rotary separator, an oxidizer, two sulfur condensers, and a first pipeline and a second pipeline respectively located between the desulfurization tower and the two sulfur condensers, wherein the air inlet of the desulfurization tower introduces sulfur-containing flue gas, and the sulfur-containing flue gas undergoes a reduction reaction with a solid reducing agent calcium sulfide in the desulfurization tower to form sulfur element (sulfur) steam. The sulfur element steam flows into the sulfur condenser via the first pipeline and the second pipeline, and after being condensed by the sulfur condenser, forms sulfur element solid and desulfurized gas respectively; a first blockage monitoring module and a second blockage monitoring module are respectively arranged on the first pipeline and the second pipeline.

Description

Technical Field

[0001] The invention relates to the field of fault detection, and in particular to a fault detection device and a fault monitoring method for sulfur recovery equipment. Background Art

[0002] With the rapid development of modern industry, the emission of sulfur dioxide flue gas has increased dramatically. After the combustion of energy fuels such as coal and natural gas, a certain amount of sulfur dioxide is usually produced. Sulfur dioxide is one of the main air pollutants, causing acid rain, haze and other atmospheric environmental pollution and serious waste of sulfur resources.

[0003] The gas after natural gas and coal combustion is desulfurized and sulfur is recovered. Sulfur recovery from combustion flue gas can not only reduce sulfur dioxide pollution, but also recover a large amount of sulfur resources. Sulfur has the advantages of easy storage, convenient transportation, high added value, and can also be used as a chemical raw material to bring certain benefits to enterprises, with good environmental and economic benefits.

[0004] The current sulfur recovery method for sulfur dioxide flue gas is usually a solid reducing agent direct reduction method. The solid reducing agent direct reduction method refers to the process of passing sulfur dioxide-containing flue gas through a reducing solid reducing agent (such as calcium sulfide, oxygen-deficient magnetite, coke) at a certain temperature (200-300°C) to transfer the oxygen atoms in sulfur dioxide to the solid reducing agent to achieve the reduction of sulfur dioxide, while the solid reducing agent is oxidized. The oxidized solid reducing agent can be regenerated. This reduction method divides the reduction process into two steps, which increases the controllability of the operation. At the same time, the solid reducing agent can be regenerated, there is no secondary pollution, high selectivity, and has good development prospects.

[0005] See also Figure 1 , the equipment for sulfur recovery by solid reducing agent direct reduction method in the prior art. Figure 1 As shown, a gas containing sulfur dioxide is introduced into a fluidized bed or a packed bed of calcium sulfide, where it reacts to form calcium sulfate, releasing sulfur vapor, which condenses to form elemental sulfur. The calcium sulfate is reduced to calcium sulfide using natural gas reformed with coke, and the calcium sulfide is recycled for reaction. However, the main problem with the above method is that the generated sulfur vapor adheres to the inner surface of the pipeline during the transfer to the sulfur condenser, causing blockage of the pipeline.

[0006] In summary, it is necessary to provide a sulfur recovery equipment fault detection device and a fault monitoring method, which can timely determine the pipeline narrowing problem caused by sulfur adhesion in the pipeline transferred from sulfur vapor to the sulfur condenser, and can timely handle and resolve the above pipeline narrowing problem. Summary of the invention

[0007] The technical problem to be solved by the present invention is that in the sulfur recovery process using a solid reducing agent direct reduction method, sulfur vapor adheres to the inner surface of a pipeline during its transfer to a sulfur condenser, causing blockage of the pipeline.

[0008] The technical solution adopted by the present invention to solve the technical problem is:

[0009] A fault detection device for sulfur recovery equipment, the fault detection device comprises: a desulfurization tower, a regeneration tower, a rotary separator, an oxidizer, two sulfur condensers, and a first pipeline and a second pipeline respectively located between the desulfurization tower and the two sulfur condensers, wherein the air inlet of the desulfurization tower introduces sulfur-containing flue gas, and the sulfur-containing flue gas undergoes a reduction reaction with a solid reducing agent calcium sulfide in the desulfurization tower to form sulfur element (sulfur) vapor. The sulfur element vapor flows into the sulfur condenser via the first pipeline and the second pipeline, and after being condensed by the sulfur condenser, forms sulfur element solid and desulfurized gas respectively; a first blockage monitoring module and a second blockage monitoring module are respectively arranged on the first pipeline and the second pipeline.

[0010] Specifically, the first pipeline and the second pipeline respectively located between the desulfurization tower and the two sulfur condensers have different pipeline inner diameters.

[0011] Specifically, the inner diameter of the second pipe is between 1.8 and 3 times the inner diameter of the first pipe.

[0012] Specifically, the first and second blockage monitoring modules include a cavity, a barrier net and a detection sensor respectively.

[0013] Specifically, the pipe connecting the first blockage monitoring module and the first pipe has the same inner diameter as the first pipe, and the pipe connecting the second blockage monitoring module and the second pipe has the same inner diameter as the second pipe.

[0014] Specifically, the first and second blockage monitoring modules and the actuators of the valves arranged in the pipeline are connected to the host computer.

[0015] Specifically, the first and second blockage monitoring modules are connected to the host computer through wireless means and the actuators of each valve.

[0016] Specifically, the wireless method is WIFI or ZIGBEE.

[0017] Specifically, the valve includes a valve body and an actuator.

[0018] A method for monitoring a fault of a sulfur recovery equipment based on the sulfur recovery equipment fault detection device comprises: a first step, a host computer controls the V12 and V13 valves of the first pipeline, the V22 and V23 valves of the second pipeline, and the valves between the gas outlet ends of the first and second pipelines and the sulfur condenser, and simultaneously collects the capacitance value measurement signals of the detection sensors in the first blockage monitoring module and the second blockage monitoring module in real time, and transmits the capacitance value to the host computer;

[0019] In the second step, the host computer receives the capacitance value measurement signal of the detection sensor, and obtains the real-time thickness of the sulfur element deposited in the first blockage monitoring module and the second blockage monitoring module through data processing;

[0020] In the third step, the host computer determines whether the first pipeline and the second pipeline have reached the cleaning trigger condition according to the thickness of the sulfur element deposited in the first blockage monitoring module and the second blockage monitoring module.

[0021] The present invention provides a sulfur recovery equipment fault detection device and a fault monitoring method, which can timely determine the pipeline narrowing problem caused by sulfur adhesion in the pipeline transferred from sulfur vapor to the sulfur condenser, and can timely handle and eliminate the above pipeline narrowing problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention is a schematic diagram of the structure of a device for sulfur recovery by direct reduction using a solid reducing agent in the prior art.

[0023] Figure 2 This is a schematic structural diagram of the sulfur recovery equipment provided by the present invention.

[0024] Figure 3 A schematic structural diagram of a sulfur transfer pipeline between a desulfurization tower and a sulfur condenser of a sulfur recovery device provided by the present invention.

[0025] Figure 4 A schematic structural diagram of a sulfur adhesion film thickness judging component of a sulfur recovery device provided by the present invention. DETAILED DESCRIPTION

[0026] The sulfur recovery equipment provided by the present invention will be described in further detail below.

[0027] The present invention will be described in more detail below with reference to the accompanying drawings, in which preferred embodiments of the present invention are shown, and it should be understood that those skilled in the art can modify the present invention described herein and still achieve the beneficial effects of the present invention. Therefore, the following description should be understood as being widely known to those skilled in the art, and not as a limitation of the present invention.

[0028] For the sake of clarity, not all features of the actual embodiments are described. In the following description, well-known functions and structures are not described in detail because they would obscure the present invention with unnecessary details. It should be recognized that in the development of any actual embodiment, a large number of implementation details must be made to achieve the specific goals of the developer.

[0029] In order to make the purpose and features of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise ratios, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0030] Figure 2 The schematic diagram of the structure of the sulfur recovery equipment provided by the present invention. Figure 2 As shown, the sulfur recovery equipment provided by the present invention includes: a desulfurization tower, a regeneration tower, a rotary separator, an oxidizer, two sulfur condensers, and a first pipeline and a second pipeline respectively located between the desulfurization tower and the two sulfur condensers. The air inlet of the desulfurization tower introduces sulfur-containing flue gas, and the sulfur-containing flue gas undergoes a reduction reaction with a solid reducing agent, calcium sulfide, in the desulfurization tower to form sulfur element (sulfur) vapor. The sulfur element vapor flows into the sulfur condenser via the first pipeline and the second pipeline, and after condensation in the sulfur condenser, forms sulfur element solid and desulfurized gas respectively.

[0031] After the redox reaction, the solid reducing agent calcium sulfide is at least partially oxidized to calcium sulfate, forming a mixture of calcium sulfide and calcium sulfate. The mixture of calcium sulfide and calcium sulfate enters the oxidizer and is further oxidized by hot air to form a dust-like fully oxidized solid reducing agent calcium sulfate. The fully oxidized solid reducing agent calcium sulfate enters the rotary separator for rotary separation, and the fully oxidized solid reducing agent calcium sulfate sinks to the regeneration tower, and the gas separated by rotation is exhausted.

[0032] The powdered fully oxidized solid reducing agent calcium sulfate entering the regeneration tower is reduced to calcium sulfide by coal and steam-reformed natural gas, and then enters the desulfurization tower for redox reaction. The steam is generated by a steam generator, and one of the steam output ports of the steam generator is connected to the steam input port of the regeneration tower.

[0033] The first pipeline and the second pipeline respectively located between the desulfurization tower and the two sulfur condensers have different internal diameters. Specifically, the internal diameter of the second pipeline is larger than the internal diameter of the first pipeline. Preferably, the internal diameter of the second pipeline is between 1.8 and 3 times the internal diameter of the first pipeline. The main purpose of setting the internal diameters of the first and second pipelines differently is to form the difference in the rate and degree of blockage of sulfur deposition in the first and second pipelines through the setting of different internal diameters, so that in the step of sulfur deposition cleaning, the pipeline with a higher degree of blockage can be selected for treatment, while ensuring that the pipeline with a lower degree of blockage maintains normal process operation, ensuring the production efficiency of the entire process system, and avoiding hard start of the equipment.

[0034] In addition, a first blockage monitoring module and a second blockage monitoring module are respectively provided on the first pipeline and the second pipeline. The air inlet and air outlet of the first blockage monitoring module are respectively connected to the first pipeline and are respectively close to the air inlet and air outlet of the first pipeline; the air inlet and air outlet of the second blockage monitoring module are respectively connected to the second pipeline and are respectively close to the air inlet and air outlet of the second pipeline. Preferably, the closeness can be, for example, less than 30 cm. Valve switches are provided between the air inlet and air outlet of the first pipeline and the second pipeline and the first pipeline and the second pipeline. Each of the above valves includes a valve body and an actuator.

[0035] The pipe connecting the first blockage monitoring module and the first pipe has the same inner diameter as the first pipe, and the pipe connecting the second blockage monitoring module and the second pipe has the same inner diameter as the second pipe.

[0036] The two steam input pipes of the steam generator are connected to the first pipe and the second pipe respectively, and the connection positions of the above connections are respectively between the air inlet ends of the first and second blockage monitoring modules and the air inlet ends of the first and second pipes. A steam exhaust pipe is connected to the pipe portion between the air outlet ends of the first and second blockage monitoring modules and the air outlet ends of the first and second pipes. And valve switches are arranged between the above two steam input pipes, the steam exhaust pipe and the first and second pipes. Each of the above valves includes a valve body and an actuator. The first and second pipes can selectively introduce high-temperature steam to the first and second pipes through their respective two steam input pipes and steam exhaust pipes, so that the sulfur element condensed and adhered in the pipes is liquefied, thereby clearing the blockage.

[0037] Valve switches are also arranged between the gas outlet ends of the first and second pipelines and the two sulfur condensers respectively, so as to selectively control whether the gas in the first and second pipelines enters the sulfur condensers.

[0038] The first and second blockage monitoring modules and the actuators of each valve are connected to the host computer, and the connection can be wireless, such as wifi or zigbee. The first and second blockage monitoring modules transmit the electrical signals detected by the sensor equipment to the host computer (not shown), and the host computer obtains the corresponding film thickness data through data processing. Through the judgment of the host computer, valves V11, V12, V13, V14, V21, V22, V23, and V24 are selectively opened or closed, thereby realizing the switching of the detection and cleaning functions of the first and second pipelines.

[0039] Figure 3 This is a schematic diagram of the structure of the sulfur transfer pipeline between the desulfurization tower and the sulfur condenser of the sulfur recovery equipment provided by the present invention. Figure 3 The first pipeline and the second pipeline respectively located between the desulfurization tower and the two sulfur condensers have different pipeline internal diameters. Specifically, the internal diameter of the second pipeline is larger than the internal diameter of the first pipeline. Preferably, the internal diameter of the second pipeline is between 1.8 and 3 times the internal diameter of the first pipeline. Preferably, the internal diameter of the first pipeline can be 15 cm, and the internal diameter of the second pipeline can be 30 cm.

[0040] The main purpose of setting the differential internal diameters of the first and second pipelines is to form differences in the rate and degree of sulphur deposition in the first and second pipelines through the setting of different internal diameters, so that in the step of sulphur deposition cleaning, the pipeline with a higher degree of clogging can be selected for treatment, while ensuring that the pipeline with a lower degree of clogging maintains normal process operation, thereby ensuring the production efficiency of the entire process system and avoiding hard start of the equipment.

[0041] A first clogging monitoring module and a second clogging monitoring module are respectively arranged on the first pipeline and the second pipeline. Figure 3 As shown, the first blockage monitoring module includes a cavity 11, a barrier net 12 and a detection sensor 13. The cavity 11 is a cylindrical shell, and its central axis is perpendicular to the pipes connected to the first pipe on both sides. Its internal diameter is 1.5-2 times the internal diameter of the first pipe. The barrier net 12 is a mesh sheet woven from filaments of insulating polymer material, and its porosity is 40%-55%. If the air attack rate is too small, it will cause excessive accumulation of sulfur in the monitoring device, so that the monitoring accuracy is reduced. If the porosity is too high, the strength of the barrier net 12 will be too low, so that the life of the monitoring module will be reduced.

[0042] The second blockage monitoring module includes a cavity 21, a barrier net 22 and a detection sensor 23. The cavity 21 is a cylindrical shell, and its central axis is perpendicular to the pipes connected to the second pipe on both sides. Its internal diameter is 1.5-2 times the internal diameter of the second pipe. The barrier net 22 is a mesh sheet woven from filaments of insulating polymer material, and its porosity is 40%-55%. If the air attack rate is too small, it will cause excessive accumulation of sulfur in the monitoring device, reducing the monitoring accuracy. If the porosity is too high, the strength of the barrier net 22 will be too low, reducing the life of the monitoring module.

[0043] Detection sensors 13, 23 are respectively arranged on the barrier nets 12, 22. Figure 4 As shown, the detection sensors 13 and 23 are respectively a pair of combing electrodes and a capacitance bridge deposited on the barrier nets 12 and 22, and the pair of combing electrodes includes a first electrode and a second electrode. The pair of combing electrodes has a preset shape and size, and the pair of combing electrodes form a flat-plate interdigital capacitor. In the original state, the capacitance value of the interdigital capacitor is determined by the dielectric constant of the barrier nets 12 and 22. When the sulfur element is deposited on the pair of combing electrodes of the detection sensors 13 and 23 and forms a continuous film, the capacitance value of the interdigital capacitor is determined by the spacing and thickness of the first electrode and the second electrode and the dielectric constant of the elemental sulfur. The capacitance value between the pair of combing electrodes can be measured by the capacitance bridge. The detection sensors 13 and 23 transmit the above capacitance value to the host computer, and the host computer calculates and determines the thickness of the sulfur element according to the change in capacitance value. The above calculation method is a well-known technology for measuring film thickness by capacitance method known in the art. The specific algorithm can be known by those skilled in the art based on their technical knowledge, and will not be repeated here.

[0044] When the upper computer determines that the membranes of the above-mentioned first pipeline and second pipeline reach the cleaning trigger condition of the corresponding pipeline, close V12, V13 of the corresponding first pipeline or V22, V23 of the second pipeline, and valves are respectively set between the outlet end of the corresponding first or second pipeline and the two sulfur condensers, and between the air inlet end and the desulfurization tower, and open V11, V14 of the corresponding first pipeline or V21, V24 of the second pipeline, and at the same time, introduce high-temperature steam from the steam generator into the corresponding first pipeline or second pipeline to clean the sulfur element. Since the temperature of the high-temperature steam can reach more than 150 degrees Celsius, the sulfur element solidified and blocked in the pipeline will be melted and discharged from the steam exhaust pipe of the corresponding pipeline.

[0045] At the same time, the host computer controls the injection of high-pressure nitrogen through the N2 injection port of the corresponding first or second blocking monitoring module to clean the sulfur element on the surface of the detection sensor, and re-measure the thickness of the sulfur film in the next monitoring cycle. After the cleaning cycle is completed, the host computer controls the corresponding V11, V14 of the first pipeline or V21, V24 of the second pipeline to be closed.

[0046] The following describes a method for monitoring a fault of the above-mentioned sulfur recovery equipment, which includes:

[0047] In the first step, the host computer controls the V12 and V13 valves of the first pipeline, the V22 and V23 valves of the second pipeline, and the valves between the first and second pipeline outlet ends and the sulfur condenser, and between the first and second pipeline inlet ends and the desulfurization tower, and at the same time collects the capacitance measurement signals of the detection sensors 13 and 23 in the first blockage monitoring module and the second blockage monitoring module in real time, and transmits the above capacitance values ​​to the host computer.

[0048] In the second step, the host computer receives the capacitance measurement signals of the detection sensors 13 and 23, and obtains the real-time thickness of the sulfur element deposited in the first blockage monitoring module and the second blockage monitoring module through data processing.

[0049] In the third step, the host computer determines whether the first pipeline and the second pipeline have reached the cleaning trigger condition according to the thickness of the sulfur element deposited in the first blockage monitoring module and the second blockage monitoring module.

[0050] The specific steps for determining the cleaning trigger conditions are as follows:

[0051] The original state of the equipment is: V11, V14 of the first pipeline and V21, V24 of the second pipeline are closed, and V12, V13 of the first pipeline and the valves between the gas outlet end of the first pipeline and the sulfur condenser, between the gas inlet end of the first pipeline and the desulfurization tower, V22, V23 of the second pipeline and the valves between the gas outlet end of the second pipeline and the sulfur condenser, and between the gas inlet end of the second pipeline and the desulfurization tower are closed, that is, the equipment is in the state of transferring sulfur vapor to the condenser.

[0052] Step 1), determine the film thickness T1 of the first pipeline, and judge whether T1 is greater than D1 / π[2ln(L1)-ln(Rv1T)], where D1 is the inner diameter of the first pipeline, L1 is the length of the first pipeline, R is the gas constant, v1 is the gas flow rate entering the first pipeline detected by the gas flow detection device installed at the position of the desulfurization tower to the first pipeline, and T is the gas temperature. The above parameters can be detected by the flow or temperature detection device installed at the position of the desulfurization tower to the first pipeline.

[0053] Step 2), determine the film thickness T2 of the second pipeline, and judge whether T2 is greater than D2 / π[2ln(L2)-ln(Rv2T)], where D2 is the inner diameter of the second pipeline, L2 is the length of the second pipeline, R is the gas constant, v2 is the gas flow rate entering the first pipeline detected by the gas flow detection device installed at the position of the desulfurization tower to the second pipeline, and T is the gas temperature. The above parameters can be detected by the flow or temperature detection device installed at the position of the desulfurization tower to the second pipeline.

[0054] Step 3), if the judgment results of step 1) and step 2) are both no, return to step 1) to continue monitoring.

[0055] If the judgment result of step 1) is yes, and the judgment result of step 2) is no, then the host computer controls to close the corresponding V12, V13 of the first pipeline and the valves between the outlet end of the first pipeline and the sulfur condenser, and between the air inlet end of the first pipeline and the desulfurization tower, and open the corresponding V11, V14 of the first pipeline, and at the same time, introduce the high-temperature steam of the steam generator into the corresponding first pipeline to clean the sulfur element; at the same time, the second pipeline step is operated and continues to work, and the steam cleaning time is t, and the preferred t value range is 5-10min. At the same time, the host computer controls the N2 injection port of the corresponding first blocking monitoring module to spray high-pressure nitrogen to clean the sulfur element on the surface of the detection sensor 13, and re-measure the thickness of the sulfur film in the next monitoring cycle. After the cleaning cycle ends, the host computer controls V11 and V14 of the first pipeline to close, and reopens V12, V13 of the first pipeline and the valves between the outlet end of the first pipeline and the sulfur condenser, and between the air inlet end of the first pipeline and the desulfurization tower, and returns to step 1).

[0056] If the judgment result of step 2) is yes, and the judgment result of step 1) is no, then the host computer controls to close the corresponding second pipeline V22, V23 and the valves between the gas outlet of the second pipeline and the sulfur condenser, and between the gas inlet of the second pipeline and the desulfurization tower, and open the corresponding second pipeline V21, V24, and at the same time, introduce the high-temperature steam of the steam generator into the corresponding second pipeline to clean the sulfur element; at the same time, the first pipeline step is operated and continues to work, and the steam cleaning time is t, and the preferred t value range is 5-10min. At the same time, the host computer controls the N2 injection port of the corresponding second blocking monitoring module to spray high-pressure nitrogen, clean the sulfur element on the surface of the detection sensor 23, and re-measure the thickness of the sulfur film in the next monitoring cycle. After the cleaning cycle ends, the host computer controls V21 and V24 of the second pipeline to close, and reopens V22, V23 of the second pipeline and the valves between the gas outlet of the second pipeline and the sulfur condenser, and between the gas inlet of the second pipeline and the desulfurization tower, and returns to step 1).

[0057] If the judgment results of step 1) and step 2) are both yes, then execute step 4).

[0058] Step 4), judge the size relationship between T1 / D1 and T2 / D2. If T1 / D1 is greater than or equal to T2 / D2, close the corresponding first pipeline V12, V13 and the valves between the outlet end of the first pipeline and the sulfur condenser, and between the air inlet end of the first pipeline and the desulfurization tower through the host computer control, and open the corresponding first pipeline V11, V14, and at the same time, introduce the high-temperature steam of the steam generator into the corresponding first pipeline to clean the sulfur element; at the same time, the second pipeline is not operated and continues to work, and the steam cleaning time is t*D1 / D2. At the same time, the host computer controls the N2 injection port of the corresponding first blocking monitoring module to spray high-pressure nitrogen to clean the sulfur element on the surface of the detection sensor 13, and re-measure the thickness of the sulfur film in the next monitoring cycle. After the cleaning cycle is over, the host computer controls V11 and V14 of the first pipeline to close, and reopens V12, V13 of the first pipeline and the valves between the outlet end of the first pipeline and the sulfur condenser, and between the inlet end of the first pipeline and the desulfurization tower, and returns to step 1).

[0059] If T1 / D1 is less than T2 / D2, the host computer controls to close V22, V23 of the corresponding second pipeline and the valves between the outlet end of the second pipeline and the sulfur condenser, and between the air inlet end of the second pipeline and the desulfurization tower, and open V21, V24 of the corresponding second pipeline, and at the same time, introduce the high-temperature steam of the steam generator into the corresponding second pipeline to clean the sulfur element; at the same time, the first pipeline step is operated and continues to work, and the steam cleaning time is t*D1 / D2. At the same time, the host computer controls the N2 injection port of the corresponding second blocking monitoring module to spray high-pressure nitrogen to clean the sulfur element on the surface of the detection sensor 23, and re-measure the thickness of the sulfur film in the next monitoring cycle. After the cleaning cycle ends, the host computer controls V21 and V24 of the second pipeline to close, and reopens V22, V23 of the second pipeline and the valves between the outlet end of the second pipeline and the sulfur condenser, and between the air inlet end of the second pipeline and the desulfurization tower, and returns to step 1).

[0060] The present invention provides a sulfur recovery equipment fault detection device and a fault monitoring method, which can timely determine the pipeline narrowing problem caused by sulfur adhesion in the pipeline transferred from sulfur vapor to the sulfur condenser, and can timely handle and eliminate the above pipeline narrowing problem.

[0061] The acquisition of necessary parameters in the present invention, such as pressure and flow, can be measured and controlled by setting corresponding pressure gauges or flow meters in the pipeline. In order to simplify the technical solution, the air pump or pressure relief port necessary for making or maintaining air pressure in the pipeline is omitted, but those skilled in the art can reasonably determine the location of the above necessary components based on the disclosure of this application according to the technical knowledge they have mastered.

[0062] The above shows and describes the basic principles, main features and advantages of the present invention, so the above is only an embodiment of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention also includes various equivalent changes and improvements, which will fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A sulfur recovery equipment fault detection device, characterized in that: The fault detection device comprises: a desulfurization tower, a regeneration tower, a rotary separator, an oxidizer, two sulfur condensers, and a first pipeline and a second pipeline respectively located between the desulfurization tower and the two sulfur condensers, wherein the air inlet of the desulfurization tower introduces sulfur-containing flue gas, and the sulfur-containing flue gas reacts with solid reducing agent calcium sulfide in the desulfurization tower to form sulfur element (sulfur) vapor; the sulfur element vapor flows into the sulfur condenser through the first pipeline and the second pipeline, and forms sulfur element solid and desulfurized gas after condensation in the sulfur condenser; a first blocking device is respectively provided on the first pipeline and the second pipeline. Monitoring module and a second blockage monitoring module, the first and second blockage monitoring modules both include a cavity, a barrier net and a detection sensor, the detection sensor is a pair of comb electrodes and a capacitance bridge deposited on the barrier net, a steam input pipe is connected between the air inlet end of the first blockage monitoring module and the air inlet end of the first pipeline, and between the air inlet end of the second blockage monitoring module and the air inlet end of the second pipeline, a steam exhaust pipe is connected between the air outlet end of the first blockage monitoring module and the air outlet end of the first pipeline, and between the air outlet end of the second blockage monitoring module and the air outlet end of the second pipeline.

2. The sulfur recovery equipment fault detection device according to claim 1, characterized in that: The first pipe and the second pipe respectively located between the desulfurization tower and the two sulfur condensers have different pipe inner diameters.

3. The sulfur recovery equipment fault detection device according to claim 2, characterized in that: The inner diameter of the second pipe is between 1.8 and 3 times the inner diameter of the first pipe.

4. The sulfur recovery equipment fault detection device according to claim 1, characterized in that: The pipe connecting the first blockage monitoring module and the first pipe has the same inner diameter as the first pipe, and the pipe connecting the second blockage monitoring module and the second pipe has the same inner diameter as the second pipe.

5. The sulfur recovery equipment fault detection device according to claim 1, characterized in that: The first and second blockage monitoring modules and actuators of various valves arranged in the pipeline are connected to the host computer.

6. The sulfur recovery equipment fault detection device according to claim 5, characterized in that: The first and second blockage monitoring modules are connected to the host computer through wireless means and the actuators of each valve.

7. The sulfur recovery equipment fault detection device according to claim 6, characterized in that: The wireless method is WIFI or ZIGBEE.

8. The sulfur recovery equipment fault detection device according to claim 7, characterized in that: The valve consists of a valve body and an actuator.

9. A method for monitoring a sulfur recovery equipment fault based on the sulfur recovery equipment fault detection device according to any one of claims 1 to 8, characterized in that: The method comprises: in the first step, a host computer controls the V12 and V13 valves respectively located on both sides of the first blockage monitoring module on the first pipeline, the V22 and V23 valves respectively located on both sides of the second blockage monitoring module on the second pipeline, and the valve between the gas outlet ends of the first and second pipelines and the sulfur condenser, and simultaneously collects the capacitance value measurement signals of the detection sensors in the first blockage monitoring module and the second blockage monitoring module in real time, and transmits the capacitance value to the host computer; In the second step, the host computer receives the capacitance value measurement signal of the detection sensor, and obtains the real-time thickness of the sulfur element deposited in the first blockage monitoring module and the second blockage monitoring module through data processing; In the third step, the host computer determines whether the first pipeline and the second pipeline have reached the cleaning trigger condition according to the thickness of the sulfur element deposited in the first blockage monitoring module and the second blockage monitoring module.

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