CN211014200U - Online detection system for sulfur recovery process gas - Google Patents
Online detection system for sulfur recovery process gas Download PDFInfo
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- CN211014200U CN211014200U CN201921809623.8U CN201921809623U CN211014200U CN 211014200 U CN211014200 U CN 211014200U CN 201921809623 U CN201921809623 U CN 201921809623U CN 211014200 U CN211014200 U CN 211014200U
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Abstract
The utility model relates to a gaseous detection area especially relates to a sulfur recovery process gas on-line measuring system. The detection system includes: the gas taking pipeline is connected with a condensing heat exchanger, a gas taking pump and a gas online analyzer in series; the condensing heat exchanger comprises an outer pipe connected with the gas taking pipeline in series and an inner pipe extending into the outer pipe, the inner pipe is connected with a refrigerating mechanism, the refrigerating mechanism supplies a low-temperature medium into the inner pipe, the low-temperature medium exchanges heat with process gas sample gas flowing through a channel between the inner pipe and the outer pipe of the condensing heat exchanger, and water vapor in the process gas sample gas is condensed. The utility model discloses a sulfur recovery process gas on-line measuring system passes through the condensation heat exchanger, can separate out the saturated steam condensation that carries in the process gas appearance gas, and then to a great extent has detached the water in the process gas appearance gas, provides effectual pretreatment of removing water for subsequent drying process, gaseous detection and analysis like this, has reduced subsequent drying process's load and drying requirement, reaches better drying effect.
Description
Technical Field
The utility model relates to a gaseous detection area especially relates to a sulfur recovery process gas on-line measuring system.
Background
In the process of recovering sulfur in the field of petrochemical industry, tail gas obtained after reaction of hydrogen sulfide and sulfur dioxide in a Claus unit is hydrogenated and enters a combustion furnace for heating, and SO is added into a hydrogenation hydrolysis reactor2Is reduced to H2S；COS、CS2Is hydrolyzed into H2S, cooling the process gas to about 40 ℃ by a quenching tower at the pressure of 15kPa, wherein the process gas contains H2、H2S、H2O、CO、CO2When the gas is equal, the detection of the process gas is mainly H2、H2S、CO2And (4) and the like.
The online analytical instrument detection system needs dry process gas sample gas, and avoids the damage of detection parts caused by water inflow of the analytical instrument and detection errors caused by water vapor interference. Meanwhile, in the sampling process, water vapor condensation may block a sampling pipeline, which easily causes corrosion and even damage to the pipeline and the instrument in the past, so that the sampling gas needs to be pretreated to remove water vapor between a process main pipeline and an analysis instrument.
At present, a pretreatment system of an online analysis instrument mainly comprises a filter, a steam-water separator and a dryer, and water vapor in process gas sample gas is effectively removed through the devices and equipment. However, the sampling pipeline usually adopts an electric heat tracing mode, which enables the process gas to carry a large amount of saturated water vapor in the heat tracing process, so that the sample gas is extracted through the diaphragm pump, and when the water is removed through the filter, the steam-water separator and the dryer, the dewatering load of the steam-water separator and the dryer is large, and particularly when the water vapor content in the sampling gas is high, the phenomenon that the water removal requirement cannot be completely met occurs, so that the water enters the detection system of the analysis instrument.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a sulfur recovery process gas on-line measuring system for solve current pretreatment system work load big, can not satisfy the problem that the dewatering required when steam content is higher.
The utility model discloses a sulfur recovery process gas on-line measuring system includes:
the gas taking pipeline is connected in parallel to the main process pipeline and is sequentially connected with the following structures in series:
the system comprises a condensation heat exchanger, a gas taking pump and a gas online analyzer;
the condensing heat exchanger comprises an outer pipe connected with the gas taking pipeline in series and an inner pipe extending into the outer pipe, the inner pipe is connected with a refrigerating mechanism, the refrigerating mechanism supplies a low-temperature medium into the inner pipe, the low-temperature medium exchanges heat with process gas sample gas flowing through a channel between the inner pipe and the outer pipe of the condensing heat exchanger, and water vapor in the process gas sample gas is condensed.
The utility model discloses a sulfur recovery process gas on-line measuring system passes through the condensation heat exchanger, can separate out the saturated steam condensation that carries in the process gas appearance gas, and then to a great extent has detached the water in the process gas appearance gas, for subsequent drying process, gaseous detection and analysis provides effectual pretreatment of removing water like this, the load and the drying requirement of subsequent drying process have greatly been reduced, not only dewatering drying equipment's work load is lower, and can reach better drying effect, the life of analytical instrument has been guaranteed.
Furthermore, a temperature sensor is installed on the downstream of the condensation heat exchanger on the gas taking pipeline, the temperature sensor is connected with a control module, the control module is connected with the refrigerating mechanism, and the output cold quantity of the refrigerating mechanism can be adjusted according to the temperature detected by the temperature sensor.
Like this through temperature sensor's feedback and control module according to temperature sensor to refrigerating mechanism's control, realize closed loop and adjust, guarantee that refrigerating mechanism is real-time to the cooling capacity of condensing heat exchanger, and then guarantee the real-time condensation dewatering effect of condensing heat exchanger.
Furthermore, the control module is a PID algorithm controller, and the controller is common and low in cost.
Preferably, the refrigerating mechanism comprises an air source and a vortex refrigerating pipe connected with the air outlet side of the air source, the air outlet section of the vortex refrigerating pipe is connected with the inner pipe, and the other end of the inner pipe extends out of the outer pipe.
The refrigerating mechanism has simple structure, can control the output cold quantity of the refrigerating mechanism only by controlling the air inlet quantity entering the vortex refrigerating pipe, and is flexible and convenient to control.
On the basis, more specifically, when the control module controls and adjusts the refrigerating mechanism, the control module realizes the adjustment of the output cold quantity of the refrigerating mechanism by controlling the air inflow of the vortex refrigerating pipe. The adjusting mode is simple to implement, the system structure is simplified, and the system cost is reduced.
Further, the inner pipe enters from the upper end of the outer pipe, and extends upwards out of the middle of the spiral inner pipe section after spirally descending in the outer pipe. So can make process gas appearance gas and the inner tube fully contact through condensation heat exchanger, increase heat exchange efficiency promotes the condensation effect.
More specifically, a proportional flowmeter is connected in series between the air source and the vortex cooling pipe, and the control module is connected with the proportional flowmeter and adjusts the air input of the vortex cooling pipe by controlling the opening of the proportional flowmeter. Compared with the air supply quantity of an air source, the opening degree of the proportional flowmeter is adjusted conveniently, the control difficulty is reduced, and the reliability of cold quantity adjustment is ensured.
In addition, the upstream of the condensing heat exchanger is also connected with an on-off valve in series, and whether gas is taken or not can be conveniently controlled through the on-off valve, so that whether the detection system works or not can be conveniently controlled.
More specifically, the lower end of the condensing heat exchanger is close to the on-off valve, and the upper end of the condensing heat exchanger is horizontally connected with the downstream gas taking pipeline, so that condensed water in the condensing heat exchanger can flow back into the main process pipeline along the condensing heat exchanger and the on-off valve and cannot enter the downstream gas taking pipeline.
In addition, a liquid blocking device and a desulfurization dryer are connected between the gas taking pump and the gas online analyzer in series to dehydrate and dry the sampled process gas after the dehydration pretreatment of the condensing heat exchanger once again, and the detection precision and the service life of the online detection analyzer are reliably ensured.
Drawings
FIG. 1 is a schematic view of an embodiment of an on-line sulfur recovery process gas detection system as claimed in the present invention in use;
FIG. 2 is a schematic diagram of a first embodiment of the system for on-line detection of sulfur recovery process gas as claimed in the present invention;
fig. 3 is a schematic structural diagram of a condensing heat exchanger in the first embodiment of the on-line detection system for sulfur recovery process gas in fig. 1.
The labels in the figures are: 1. vortex refrigeration pipe, 2, condensation heat exchanger, 3, flange, 4, sampling pipeline, 5, main process pipeline, 6, temperature sensor, 7, PID algorithm controller, 8, proportional flowmeter, 9, sample gas inlet ball valve, 10, sample gas outlet, 11, cold air inlet, 12, cold air outlet, 13, instrument air tank, 14, diaphragm pump, 15, liquid stopper, 16, desulfurization dryer, 17, online analysis instrument, 18, sample return pipeline.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
The utility model discloses a sulfur recovery process gas on-line measuring system's embodiment 1:
the utility model discloses an install sulfur recovery process gas on-line measuring system that can automatically regulated on process line, carry out the preliminary treatment to the sample gas to detect the composition content in the sample gas.
As shown in figures 1-2, the utility model discloses a sulfur recovery process gas on-line measuring system is including getting the gas pipeline, gets to concatenate on the gas pipeline and has handled and check out test set a plurality of process gases, that is to say, the utility model discloses a sulfur recovery process gas on-line measuring system is mainly that a plurality of process gases are handled and detecting instrument passes through corresponding tube coupling, and forms an air current passageway, and when the process gas of sample was through this air current passageway, carries out corresponding processing and detection to the process gas. When the gas taking pipeline is used, two ends of the gas taking pipeline are respectively connected with the main process pipeline, so that process gas in the main process pipeline can be shunted to pass through the gas taking pipeline and then flows back into the main process pipeline.
Specifically, as shown in fig. 1 in detail, two flange joints are welded on a main process pipeline 5 at intervals in the length direction, the flange joint at the upstream constitutes a sampling pipeline 4, the flange joint at the downstream constitutes a sample return pipeline 18, and two ends of a sampling pipeline of the sulfur recovery process gas online detection system are respectively connected with the sampling pipeline 4 and the sample return pipeline 18. The sulfur recovery process gas on-line detection system specifically comprises a sample gas inlet ball valve 9, a return pipe, a condensing heat exchanger 2, a diaphragm pump 14, a liquid stopper 15, a desulfurization dryer 16 and an on-line analysis instrument 17 which are sequentially connected in series. The sample gas inlet ball valve 9 is in butt joint with the sampling pipeline 4 through an end flange, the sample gas inlet ball valve 9 is in butt joint with a return pipe through an end flange at the other end, the return pipe is connected with the condensing heat exchanger 2 at the downstream side, and similarly, after all the parts are connected through an intermediate pipeline, the sample return pipeline 18 is connected at the downstream side of the online analysis instrument 17.
The utility model discloses a sulfur recovery process gas on-line measuring system installs the upside at main process piping 5 when using, and the equal vertical extension of sample gas import ball valve 9, back flow and condensation heat exchanger 2, when process gas sample gas entering condensation heat exchanger 2 in main process piping 5 carries out the heat transfer like this, the vapor in the process gas meets cold and the condensation is appeared, under the effect of gravity, the comdenstion water refluence and by the back flow in the main process piping 5.
Specifically, the condensing heat exchanger 2 has a structure shown in fig. 3, and is a cylindrical closed container, the bottom of the container is a sample gas inlet, the top side of the container is a sample gas outlet, and a condensing heat exchange tube is installed in the cavity and is of a coil structure. Specifically, including the outer tube and install the inner tube (condensation heat exchange tube) in the outer tube, the lower extreme opening of outer tube is used for with the back flow butt joint, and the upper end of outer tube is sealed, and the inner tube stretches into in the outer tube from the upper end of outer tube, and is the heliciform decline in the outer tube, and the position that is close to the bottom of outer tube is descended to, then the inner tube upwards passes and stretches into the upper end of outer tube from the middle part of spiral pipe section to form cold wind import 11 and cold wind export 12 in the upper end of outer tube. Of course, a channel for the process gas sample to pass through is formed between the inner tube and the outer tube, and a sample gas outlet 10 for the process gas sample to continuously flow backwards is arranged on the side wall of the upper end of the outer tube.
It can be seen from the structure of condensation heat exchanger 2 that, after process gas appearance gas got into from the lower extreme of outer tube, process gas can fully contact with the inner tube and carry out the heat transfer, and the heat of process gas appearance gas in the outer tube can be absorbed and taken away to the air conditioning in the inner tube, and the saturated vapor that carries in the process gas appearance gas cools down the condensation water like this, then flows downwards and drips in the backward flow along the inner tube, and the process gas appearance gas after condensing out the vapor is from appearance gas outlet 10, gets into in subsequent sample pipeline.
Of course, the condensing heat exchanger is connected with a refrigerating mechanism for connecting with the cold air inlet 11 and supplying cold energy into the inner pipe. In this embodiment, refrigerating mechanism includes instrument wind jar 13 and the vortex refrigeration pipe 1 of being connected with the side of giving vent to anger of instrument wind jar 13, and the section of giving vent to anger of vortex refrigeration pipe 1 is connected the inner tube, the other end of inner tube stretches out the outer tube. The vortex refrigerating pipe is a cylindrical closed container and consists of a nozzle, a vortex chamber, a separation orifice plate, a pipe and a control valve. The swirl chamber is centered, the pipe is divided into cold and hot ends, the nozzles are arranged tangentially along the swirl chamber, the orifice plate is between the swirl chamber and the cold pipe, and the outlet of the hot end pipe is provided with a control valve. Since vortex cooling tubes are a relatively mature prior art, they will not be described in detail here. The vortex cooling pipe 1 can separate hot air and cold air in airflow sent into the instrument air tank 13, the hot air is discharged from an air outlet at the upper side of the vortex cooling pipe, and the cold air enters the condensing heat exchanger from top to bottom.
As a more optimized scheme, a temperature sensor 6 is installed on the downstream of the condensation heat exchanger 2 on the gas taking pipeline, the temperature sensor 6 is connected with a control module, the control module is connected with the refrigerating mechanism, and the output cold quantity of the refrigerating mechanism can be adjusted according to the temperature detected by the temperature sensor. Like this through temperature sensor's feedback and control module according to temperature sensor to refrigerating mechanism's control, realize closed loop and adjust, guarantee that refrigerating mechanism is real-time to the cooling capacity of condensing heat exchanger, and then guarantee the real-time condensation dewatering effect of condensing heat exchanger.
Specifically, as shown in fig. 1-2, a temperature sensor 6 is installed on a pipeline between the condensing heat exchanger 2 and the diaphragm pump 14, the temperature sensor 6 is connected with a PID algorithm controller 7 through a wire, the PID algorithm controller 7 is used as a control module, and the control temperature is within 3-10 ℃. PID algorithm controllers are more common and lower in cost. The PID algorithm controller is connected with the proportional flowmeter 8 through a lead and controls the opening degree of the proportional flowmeter 8. When the device is used, the temperature sensor 6 detects the temperature of the process gas sample gas flowing out from the sample gas outlet 10, and if the temperature of the process gas sample gas flowing out from the temperature sensor is higher than a certain value, the heat exchange of the condensation heat exchanger 2 is proved to not achieve the expected or set effect, namely, the refrigerating capacity supplied by the refrigerating mechanism to the condensation heat exchanger is insufficient. At the moment, the proportional flowmeter 8 is controlled to increase the opening degree through a PID algorithm controller serving as a control module, and the cooling capacity of the air source 13 to the vortex cooling pipe 1 is improved; if the temperature sensor 6 detects that the temperature of the process gas sample gas at the sample gas outlet 10 is equal to or lower than a set value, the heat exchange of the condensing heat exchanger 2 is expected, the process gas sample gas in the outer pipe can be fully cooled, water vapor carried in the process gas sample gas can be fully condensed and separated out, at the moment, the opening degree of the proportional flowmeter 8 is kept under the control of a PID algorithm controller, or the opening degree of the proportional flowmeter 8 is properly reduced to prevent the condensation heat exchanger 2 cavity from being frozen due to overcooling, and the gas online detection is continued.
In addition, a liquid blocking device 15 and a desulfurization dryer 16 are connected between the gas taking pump 14 and the gas on-line analyzer 17 in series to dehydrate and dry the sampled process gas after the water removal pretreatment of the condensing heat exchanger 2 again, and the detection precision and the service life of the on-line detection analyzer are reliably ensured.
The online detection system for the sulfur recovery process gas can rapidly reduce the temperature of the sampled gas at the initial sampling stage through vortex refrigeration and condensation heat exchange, achieves the purpose of drying and dewatering, and reduces the dewatering load of the pretreatment system of the online analysis instrument; can automatically regulated dewatering effect, strong to the adaptability of operating mode, the sampling pipe need not to carry out electric tracing, direct backward flow to trunk line after the steam condensation need not independent drainage.
Of course, the sulfur recovery process gas on-line detection system of the present invention is not limited to the above embodiment, and other embodiments of several sulfur recovery process gas on-line detection systems are provided below.
The utility model discloses a sulfur recovery process gas on-line measuring system's embodiment 2: the sulfur recovery process gas on-line detection system specifically comprises a sample gas inlet ball valve, a return pipe, a condensation heat exchanger, a diaphragm pump, a liquid stopper, a desulfurization dryer and an on-line analysis instrument which are sequentially connected in series. The sample gas inlet ball valve is in butt joint with the sampling pipeline through an end flange, the sample gas inlet ball valve is in butt joint with the return pipe through an end flange at the other end, the return pipe is connected with the condensing heat exchanger on the downstream side, and similarly, after all the parts are connected through an intermediate pipeline, the sample return pipeline is connected on the downstream side of the online analysis instrument.
The utility model discloses a sulfur recovery process gas on-line measuring system installs the upside at main process pipeline when using, and the equal vertical extension of sample gas import ball valve, back flow and condensation heat exchanger, when process gas sample gas in main process pipeline gets into the condensation heat exchanger like this and carries out the heat transfer, and vapor in the process gas meets cold and the condensation is appeared, under the effect of gravity, and the comdenstion water refluxes and by the back flow in flowing into main process pipeline.
Specifically, the condensing heat exchanger includes the outer tube and installs the inner tube in the outer tube, and the lower extreme opening of outer tube is used for with the back flow butt joint, and the upper end of outer tube is sealed, and the inner tube stretches into in the outer tube from the upper end of outer tube, and is the heliciform decline in the outer tube, and the position that is close to the bottom of outer tube is descended to, then the inner tube upwards passes and stretches into the upper end of outer tube from the middle part of spiral pipe section. Of course, a channel for the process gas sample to pass through is formed between the inner pipe and the outer pipe, and a sample gas outlet for the process gas sample to continuously flow backwards is arranged on the side wall of the upper end of the outer pipe.
The condensation heat exchanger is connected with a heat pump in a matching way so as to be connected with two ends of the inner pipe extending out of the outer pipe, the inner pipe is used as an evaporator of the heat pump at the moment, and heat exchange media in the inner pipe can absorb heat of process gas sample gas passing through the outer pipe and cool the sample gas so as to condense and separate out moisture in the sample gas.
The utility model discloses a sulfur recovery process gas on-line measuring system's embodiment 3: the sulfur recovery process gas on-line detection system specifically comprises a sample gas inlet ball valve, a return pipe, a condensation heat exchanger, an air pump, a liquid stopper, a desulfurization dryer and an on-line analysis instrument which are sequentially connected in series. The sample gas inlet ball valve is in butt joint with the sampling pipeline through an end flange, the sample gas inlet ball valve is in butt joint with the return pipe through an end flange at the other end, the return pipe is connected with the condensing heat exchanger on the downstream side, and similarly, after all the parts are connected through an intermediate pipeline, the sample return pipeline is connected on the downstream side of the online analysis instrument.
The condensation heat exchanger includes the outer tube and installs the inner tube in the outer tube, and the lower extreme opening of outer tube is used for with the back flow butt joint, and the upper end of outer tube is sealed, and the inner tube stretches into in the outer tube from the upper end of outer tube, and is the heliciform decline in the outer tube, and the outer tube is close to the bottom position until descending, then the inner tube upwards passes and stretches into the upper end of outer tube from the middle part of spiral pipe section to form cold wind import and cold wind export in the upper end of outer tube. Of course, a channel for the process gas sample to pass through is formed between the inner pipe and the outer pipe, and a sample gas outlet for the process gas sample to continuously flow backwards is arranged on the side wall of the upper end of the outer pipe.
The condensing heat exchanger is connected with a refrigerating mechanism in a matching way so as to be connected with the cold air inlet and supply cold energy to the inner pipe. In this embodiment, refrigerating mechanism includes the fan and the vortex refrigeration pipe of being connected with the side of giving vent to anger of fan, and the section of giving vent to anger of vortex refrigeration pipe is connected the inner tube, the other end of inner tube stretches out the outer tube. The vortex refrigerating pipe can separate hot air and cold air in air current that the air supply sent into it, and hot air is discharged from its upside air outlet, and cold air gets into in the condensation heat exchanger from the top down.
A temperature sensor is installed on the downstream of the condensation heat exchanger on the air taking pipeline, the temperature sensor is connected with a control module, the control module is connected with a fan, and the supply air volume (output power) of the fan can be adjusted according to the temperature detected by the temperature sensor. Like this through temperature sensor's feedback and control module according to temperature sensor to the control of fan air feed volume, realize closed loop and adjust, guarantee that refrigeration mechanism is real-time to the cooling capacity of condensation heat exchanger, and then guarantee the real-time condensation dewatering effect of condensation heat exchanger.
The utility model discloses a sulfur recovery process gas on-line measuring system's embodiment 4: similar to the embodiment 1, the difference is that in the embodiment 4, a proportional valve is used to replace the proportional flow meter in the embodiment 1, so that the control module controls the opening degree of the proportional valve through the temperature fed back by the temperature sensor, and the adjustment of the cooling capacity of the refrigeration mechanism is realized.
The utility model discloses a sulfur recovery process gas on-line measuring system's embodiment 5: similar to example 1, except that the inner tube extends inside the outer tube in an S-shaped folded back in the up-down direction; or other coil forms, the main purpose is to increase the heat exchange efficiency.
The utility model discloses a sulfur recovery process gas on-line measuring system's embodiment 6: similar to example 1, the difference is that other water removal and drying devices such as a filter and a dryer are arranged between the gas taking pump and the gas on-line analyzer in series, so that the sample gas is dried again after the condensing heat exchanger and before the on-line analyzer.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a sulfur recovery process gas on-line measuring system which characterized by includes:
the gas taking pipeline is connected in parallel to the main process pipeline and is sequentially connected with the following structures in series:
the system comprises a condensation heat exchanger, a gas taking pump and a gas online analyzer;
the condensing heat exchanger comprises an outer pipe connected with the gas taking pipeline in series and an inner pipe extending into the outer pipe, the inner pipe is connected with a refrigerating mechanism, the refrigerating mechanism supplies a low-temperature medium into the inner pipe, the low-temperature medium exchanges heat with process gas sample gas flowing through a channel between the inner pipe and the outer pipe of the condensing heat exchanger, and water vapor in the process gas sample gas is condensed.
2. The system for on-line detection of sulfur recovery process gas according to claim 1, wherein a temperature sensor is installed on the gas taking pipeline at the downstream of the condensation heat exchanger, the temperature sensor is connected with a control module, and the control module is connected with the refrigerating mechanism and can adjust the output cold quantity of the refrigerating mechanism according to the temperature detected by the temperature sensor.
3. The system of claim 2, wherein the control module is a PID algorithm controller.
4. The system of claim 1, wherein the refrigeration mechanism comprises a gas source and a vortex refrigeration pipe connected to the gas outlet side of the gas source, the gas outlet section of the vortex refrigeration pipe is connected to the inner pipe, and the other end of the inner pipe extends out of the outer pipe.
5. The system for on-line detection of sulfur recovery process gas according to claim 2, wherein the refrigerating mechanism comprises a gas source and a vortex refrigerating pipe connected with the gas outlet side of the gas source, the gas outlet section of the vortex refrigerating pipe is connected with the inner pipe, the other end of the inner pipe extends out of the outer pipe, and the control module realizes the adjustment of the output cold quantity of the refrigerating mechanism by controlling the gas inlet quantity of the vortex refrigerating pipe.
6. The system of claim 4 or 5, wherein the inner tube extends from the upper end of the outer tube, and extends upwardly from the middle of the spiral inner tube section after the inner tube is spirally lowered.
7. The on-line detection system for the sulfur recovery process gas according to claim 5, wherein a proportional flow meter is connected in series between the gas source and the vortex cooling pipe, and the control module is connected with the proportional flow meter and realizes the adjustment of the gas inflow of the vortex cooling pipe by controlling the opening degree of the proportional flow meter.
8. The system for on-line detection of sulfur recovery process gas according to any one of claims 1-5, wherein an on-off valve is connected in series with the upstream of the condensing heat exchanger.
9. The system of claim 8, wherein the lower end of the condensing heat exchanger is close to the on-off valve, and the upper end of the condensing heat exchanger is horizontally connected with a downstream gas taking pipeline.
10. The system for on-line detection of sulfur recovery process gas according to any one of claims 1 to 5, wherein a liquid stopper and a desulfurization dryer are connected in series between the gas extraction pump and the gas on-line analyzer.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113797579A (en) * | 2021-08-17 | 2021-12-17 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Instrument for stainless steel nitric acid method intergranular corrosion test and use method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113797579A (en) * | 2021-08-17 | 2021-12-17 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Instrument for stainless steel nitric acid method intergranular corrosion test and use method |
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