CN217483978U

CN217483978U - Online analysis system for S-Zorb lock hopper

Info

Publication number: CN217483978U
Application number: CN202220539492.1U
Authority: CN
Inventors: 唐明德; 沈杰青
Original assignee: Shanghai Hankewei Automation Technology Co ltd
Current assignee: Shanghai Hankewei Automation Technology Co ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-09-23
Anticipated expiration: 2032-03-14

Abstract

An S-Zorb lock hopper on-line analysis system relates to the technical field of petrochemical industry catalytic gasoline adsorption desulfurization devices, and comprises a pretreatment unit for preliminarily cooling sample gas; an automatic cut-off control unit for automatically opening and cutting off the sample injection flow path according to the system instruction; a refrigeration unit using cyclone refrigeration; a pressure detection unit for automatically detecting pressure; the automatic liquid discharging unit is used for automatically discharging liquid after the liquid reaches a certain height; a water stabilizing unit which ensures the pressure of the sample gas to be kept within the pressure difference range by using the pressure difference of water; preventing liquid molecules from entering a membrane filtration unit of the meter; an analysis unit; an exhaust absorption unit for treating exhaust gas; the utility model discloses set up the U type pipe of inversion at the overflow mouth of the steady unit of water, guaranteed the stability of the height of the steady unit water level of water, guaranteed the appearance instrument flow of advancing to the accuracy of the instrument reading of assurance.

Description

Online analysis system for S-Zorb lock hopper

Technical Field

The utility model relates to a petrochemical catalysis petrol adsorbs desulphurization unit' S technical field, concretely relates to S-Zorb lock hopper on-line analysis system.

Background

In the application number: in CN 201510314050.1's patent, provide a dependable performance, ensure online uninterrupted operation's online analytic system, solved the sample gas temperature that lockhopper online analytic system exists high, the pressure is high and the range of variation is big problem, still solved the sample gas and taken the oil height, contain many scheduling problems of particulate matter.

In the above-mentioned patent, in the steady unit of water, the phenomenon that flows in the twinkling of an eye from the overflow outlet appears along with the rising of sample gas pressure in the surge tank, and the water in the surge tank can not in time be supplemented, and then causes the decline of analytical instrument appearance sample flow, makes the instrument reading inaccurate.

SUMMERY OF THE UTILITY MODEL

To the not enough that prior art exists, the utility model aims to provide an S-Zorb locking hopper online system adds the U type on the basis of the steady unit of current water and bends, avoids the liquid in the steady jar of water from the phenomenon of the spout spun suddenly, and concrete scheme is as follows:

the S-Zorb lock hopper online system is used for petrochemical engineering catalytic gasoline adsorption desulfurization and comprises a pretreatment unit, an automatic cut-off control unit, a refrigeration unit, a pressure detection unit, a pressure increase and decrease sampling unit, a standby pressure increase and decrease sampling unit, an automatic liquid drainage unit, a water stabilization unit, a membrane filtration unit, an analysis unit and a discharge absorption unit;

the inlet end of the pretreatment unit is connected with a process pipeline flange; the outlet end of the pretreatment unit is connected with the inlet end of the automatic cut-off control unit; the outlet end of the automatic cut-off control unit is connected with the inlet end of the refrigeration unit; the outlet end of the refrigerating unit is connected with the inlet end of the pressure detection unit; the outlet end of the pressure detection unit is connected with the inlet ends of the pressure increasing and reducing sampling unit and the spare pressure increasing and reducing sampling unit; the outlet ends of the pressure increasing and reducing sampling unit and the spare pressure increasing and reducing sampling unit are connected with the inlet end of the water stabilizing unit; the discharge ends of the pressure increasing and reducing sampling unit and the spare pressure increasing and reducing sampling unit are connected with the inlet end of the automatic liquid drainage unit; the outlet end of the automatic liquid discharging unit is connected with a discharging pipeline; the outlet end of the water stabilizing unit is connected with the inlet end of the membrane filtering unit; the outlet end of the membrane filtration unit is connected with the inlet end of the analysis unit; the outlet end of the analysis unit is connected to the discharge absorption unit;

preferably, the water stabilizing unit comprises a third ball valve, a glass observation tube, a water stabilizing tank and a second maintenance ball valve; an upward U-shaped bend is added at the overflow port of the water stabilizing tank, when the water level of the water stabilizing tank does not reach the top of the U-shaped bend, the water stabilizing tank cannot flow out through the overflow port, and clean water enters the water stabilizing tank through the three ball valves and the glass observation tube in sequence and finally passes through the top end of the U-shaped bend to form siphon so that the clean water is discharged from the overflow port.

Specifically, the pretreatment unit includes cooling coil, a needle valve, a filter core, a ball valve, No. two needle valves, No. two filter cores and No. two ball valves, cooling coil adopts 1/4 cun stainless steel coil.

Specifically, the automatic cut-off control unit comprises a first three-way ball valve, a cut-off solenoid valve 19, a cut-off pneumatic valve and a second three-way ball valve.

Specifically, the refrigeration unit comprises a cyclone refrigerator and a discharge ball valve; the lower part of the cyclone refrigerator is connected with a discharge ball valve.

Specifically, the pressure detection unit includes a pressure detector.

Concretely, increase and decrease and press the sampling unit and include a decompression governing valve, a sample pump, No. three needle valves, No. three filter cores.

Concretely, reserve pressure increasing and reducing sampling unit includes No. two pressure reducing regulating valves, No. two sample pumps, No. four needle valves, No. four filter cores.

Specifically, the automatic liquid discharge unit comprises a first automatic liquid discharge tank, a second automatic liquid discharge tank and a first maintenance ball valve.

Specifically, the membrane filtration unit comprises a flowmeter and a membrane filter.

Specifically, the analysis unit comprises an analysis meter; the emission absorption unit includes an emission absorption device.

Compared with the prior art, the beneficial effects of the utility model are as follows:

(1) the online system realizes real-time detection of the gas pressure of the sample and automatic switching of the sampling mode, the system can automatically enter a pressure reduction flow path when the pressure is high, and automatically enter a pressurization flow path when the pressure is low, so that the continuous operation of the field system is met;

the water stabilizing unit ensures that the pressure of the sample gas is kept within a pressure difference range by using the pressure difference of water, and the gas exceeding the pressure difference can be automatically discharged, so that the safety of subsequent units is protected. Ensuring that the inlet pressure of the analysis unit is kept constant, and preventing the analysis unit from being damaged by high pressure;

in the steady jar of water of the steady unit of current water, the phenomenon that the water in the steady jar of water flows in the twinkling of an eye from the overflow outlet along with the rising of sample gas pressure can appear, and the steady jar of water can not in time obtain the moisturizing, causes the decline of analytical instrument appearance introduction flow, makes the instrument reading inaccurate. In order to overcome the phenomenon, an upward U-shaped bend is added at an overflow port of the water stabilizing tank, when the water level of the water stabilizing tank does not reach the top of the U-shaped bend, no water is discharged from the overflow port, and when the water stabilizing tank works normally, the water level hardly exceeds the top of the U-shaped bend, so that the pressure stabilizing reliability of the water stabilizing tank is ensured, the high stability of the water level is ensured, the flow of a sample injection instrument is ensured, the reading accuracy of the instrument is ensured, and the water stabilizing tank is convenient to use and convenient to maintain.

(2) The pretreatment unit is matched with air cooling and air cooling to control the temperature of materials in the locking hopper to be 5 ℃, so that the normal operation of the system is ensured, the efficiency is high, and the maintenance amount is small.

(3) And detecting the gas pressure of the sample in real time and automatically switching the sampling mode. The system can automatically enter a pressure reduction flow path when the pressure is high, and automatically enter a pressure increasing flow path when the pressure is low, so that the continuous operation of a field system is met.

(4) Aiming at the pressure increasing and reducing sampling units which are easy to block, a spare and first measure is adopted, two pressure increasing and reducing sampling units are arranged, and when the pressure increasing and reducing sampling units block, the pressure increasing and reducing sampling units are switched to the spare pressure increasing and reducing sampling units, so that the uninterrupted operation of the system is ensured.

(5) The system adopts an automatic liquid discharge mode, so that errors of manual operation are reduced.

(6) And the membrane filtering unit is added to ensure that liquid and particles cannot enter the analysis unit. The safety use of the analysis instrument is ensured, and the safety level is improved.

Drawings

Fig. 1 is a detailed structural schematic diagram of the present invention;

FIG. 2 is a block diagram of the present invention;

FIG. 3 is a schematic view of the internal structure of the pretreatment unit of the present invention;

FIG. 4 is a schematic view of the internal structure of the automatic cut-off control unit of the present invention;

FIG. 5 is a schematic view of the internal structure of the refrigeration unit of the present invention;

FIG. 6 is a schematic view of the internal structure of the pressure detecting unit of the present invention;

FIG. 7 is a schematic view of the internal structure of the pressure-increasing/decreasing sampling unit of the present invention;

FIG. 8 is a schematic view of the internal structure of the spare pressure increasing and reducing sampling unit of the present invention;

fig. 9 is a schematic view of the internal structure of the automatic liquid discharge unit of the present invention;

FIG. 10 is a schematic view of the internal structure of the water stabilizing unit of the present invention;

FIG. 11 is a schematic view of the internal structure of the membrane filtration unit of the present invention;

FIG. 12 is a schematic view of the internal structure of an analysis unit according to the present invention;

FIG. 13 is a schematic view of the internal structure of the emission absorption unit of the present invention;

reference numerals are as follows: 1. a pretreatment unit; 2. an automatic cut-off control unit; 3. a refrigeration unit; 4. a pressure detection unit; 5. a pressure increasing and reducing sampling unit; 6. a standby pressure increasing and reducing sampling unit; 7. an automatic liquid discharge unit; 8. a water stabilizing unit; 9. a membrane filtration unit; 10. an analysis unit; 11. a discharge absorption unit; 12. a first needle valve; 13. a first filter element; 14. a first ball valve; 15. a second needle valve; 16. a second filter element; 17. a second ball valve; 18. a first three-way ball valve; 19. cutting off the electromagnetic valve; 20. cutting off the pneumatic valve; 21. a second three-way ball valve; 22. a cyclone refrigerator; 23. a discharge ball valve; 24. a pressure detector; 25. a first pressure reduction regulating valve; 26. a first sampling pump; 27. a third needle valve; 28. a third filter element; 29. a second pressure reduction regulating valve; 30. a second sampling pump; 31. a fourth needle valve; 32. a fourth filter element; 33. a first automatic drain tank; 34. a second automatic liquid discharge tank; 35. a first maintenance ball valve; 36. a third ball valve; 37. a glass sight tube; 38. stabilizing the tank with water; 39. a second maintenance ball valve; 40. a flow meter; 41. a membrane filter; 42. an analytical instrument; 43. an exhaust absorption device; 44. a cooling coil; 45. and (4) bending the U shape.

Detailed Description

The invention will be described in more detail below with reference to an exemplary embodiment and the accompanying drawings, which are included to illustrate and not to limit the invention, but to define and cover by the claims various embodiments.

The gas environment of the S-Zorb lock hopper has certain particularity, and is mainly characterized in that the temperature of sample gas is high, the pressure is high, the change range is large, the oil content is high, the particulate matter is more, and the like, the structure of the existing S-Zorb lock hopper on-line analysis system refers to a figure 1 and a figure 2, and the system comprises a pretreatment unit 1, an automatic cut-off control unit 2, a refrigeration unit 3, a pressure detection unit 4, a pressure increase and decrease sampling unit 5, an automatic liquid drainage unit 7, a water stabilization unit 8, a membrane filtration unit 9, an analysis unit 10 and a discharge absorption unit 11 which are sequentially connected; the automatic cut-off control unit 2 performs automatic opening and cut-off control on the sample injection flow path according to a system instruction; the refrigeration unit 3 adopts cyclone refrigeration; the pressure detection unit 4 automatically detects the pressure of the sample, adjusts the flow and enters the pressure increasing flow path and the pressure reducing flow path, and the pressure increasing flow path and the pressure reducing flow path are respectively communicated with the pressure increasing sampling unit and the pressure reducing sampling unit; the automatic liquid discharging unit 7 automatically discharges liquid after the liquid reaches a certain height; the water stabilizing unit 8 ensures that the pressure of the sample gas is kept in a pressure difference range by using the pressure difference of water; the membrane filtration unit 9 prevents liquid molecules from entering the meter; the emission absorption unit 11 treats the emission gas to convert the gas into CO2 and water.

As shown in fig. 3, after the sample gas in the S-Zorb process pipe is initially cooled by the cooled cooling coil 44, the sample gas enters the automatic shutoff control unit 2 through the first needle valve 12, the first filter element 13 and the first ball valve 14; the second needle valve 15, the second filter element 16 and the second ball valve 17 are standby filter flow paths, and when the first filter element 13 is replaced, the system is switched to a standby filter component, so that uninterrupted sampling is guaranteed.

As shown in fig. 4, the sample gas enters the refrigeration unit 3 through the first three-way ball valve 18, the cut-off pneumatic valve 20 and the second three-way ball valve 21; if the lock hopper process run requires remote shut-off of the sample gas, the shut-off solenoid 19 can be controlled to open, thereby controlling the shut-off pneumatic valve 20 to shut off the sample gas, and the position signal of the shut-off pneumatic valve 20 must be fed back to the process run while the switch is completed. If the cut-off pneumatic valve 20 needs maintenance, the first three-way ball valve 18 and the second three-way ball valve 21 can be switched to be in a normally open state, and uninterrupted sampling of the system is ensured when the cut-off pneumatic valve 20 is maintained. In the embodiment, the cutting part adopts a mode that the cutting electromagnetic valve 19 is matched with the cutting air-operated valve 20, and a mode that the cutting electromagnetic valve 19 is directly cut can also be adopted, and the types of the cutting electromagnetic valve 19 and the cutting air-operated valve 20 can be changed according to practical application, but the cutting electromagnetic valve 19 and the cutting air-operated valve 20 are all within the protection scope of the invention.

As shown in fig. 5, the sample gas enters the cyclone refrigerator 22 for further cooling, the cooled condensate is discharged through the discharge ball valve 23, and the dried sample gas enters the pressure detecting unit 4; in this embodiment, the refrigeration component is preferably a cyclone refrigerator, and a water cooler or an air cooler may be used, and the type of the refrigerator may vary according to the actual application, but should be within the scope of the present invention.

As shown in fig. 6, the pressure detecting unit 4 includes a pressure detector 24, and the pressure detector 24 sets a pressure range of 0.3bar for controlling the pressure increasing and decreasing sampling unit 5 and the spare pressure increasing and decreasing sampling unit 6.

Referring to fig. 7, the internal structure of the pressure-increasing/decreasing sampling unit 5 is schematically shown, and the sample gas enters the water stabilization unit 8 through the first pressure-decreasing regulating valve 25, the first sampling pump 26 and the third filter element 28; when the pressure detection unit 4 detects that the pressure of the sample gas is lower than 1bar, starting the first sampling pump 26; when the sample gas pressure is higher than 1bar, the first sampling pump 26 is closed; the first pressure reduction regulating valve 25 is used for keeping the output pressure at 0.3bar when the sample gas input pressure is higher than 1 bar; the third needle valve 27 is used for adjusting the backflow flow of the first sampling pump 26 or the second sampling pump 30 to prevent the pumps from being stuffy; the third filter element 28 is used for filtering the sample gas for the second time, and discharging the filtered waste liquid into the automatic liquid discharging unit 7.

As shown in fig. 8, the internal structure of the spare pressure-increasing/decreasing sampling unit 6 is schematically illustrated, the control process is consistent with that of the pressure-increasing/decreasing sampling unit 5, and when the pressure-increasing/decreasing sampling unit 5 needs maintenance, the spare pressure-increasing/decreasing sampling unit 6 can be switched to, so as to keep the system running online and uninterruptedly.

Referring to fig. 9, the internal structure of the automatic liquid discharge unit 7 is schematically illustrated, and the sample gas passes through the pressure-increasing/decreasing sampling unit 5 or the standby pressure-increasing/decreasing sampling unit 6, and the filtered waste liquid is discharged into the first automatic liquid discharge tank 33, the second automatic liquid discharge tank 34, and the first maintenance ball valve 35.

Referring to fig. 10, the internal structure of the water stabilizing unit 8 is schematically shown, clean water enters the water stabilizing tank 38 through a third ball valve 36 and a glass observation tube 37; the second service ball valve 39 is used to discharge cleaning water during service. An inverted U-shaped bend 45 is arranged at the overflow port of the water stabilizing tank 38, and when the water level of the water stabilizing tank 38 does not reach the top of the U-shaped bend 45, the water cannot flow out through the overflow port. When the pressure fluctuation is large, the water level of the water stabilizing tank 38 can instantly exceed the top of the U-shaped bend 45, and water flows out through the overflow port until the water level reaches the lowest point of the U-shaped bend 45. And the water stabilizing tank 38 is in a normal working state, and the water level is difficult to exceed the top of the U-shaped bend 45, so that the pressure stabilizing reliability of the water stabilizing tank 38 is ensured. Meanwhile, the bubbling condition can be observed in the glass observation tube 37, if the bubbling is too violent, the first pressure reducing and adjusting valve 25 of the pressure increasing and reducing sampling unit 5 or the second pressure reducing and adjusting valve 29 of the standby pressure increasing and reducing sampling unit 6 can be adjusted for control.

Referring to fig. 11, the internal structure of the membrane filtration unit 9 is schematically shown, and the sample gas passes through a flow meter 40, a membrane filter 41, and enters the analysis unit 10. The primary function of the membrane filter 41 is to prevent minute amounts of liquid or impurities in the sample gas from entering the meter.

Referring to fig. 12, the internal structure of the analysis unit 10 is schematically illustrated, and the sample gas enters the analysis meter 42 for gas analysis.

Referring to fig. 13, the internal structure of the exhaust absorption unit 11 is schematically shown, and the sample gas is treated by the absorption and exhaust device 43 and then exhausted to the atmosphere.

The use process comprises the following steps: after sample gas in the S-Zorb process pipeline is subjected to air cooling and preliminary filtration through the pretreatment unit 1, the sample gas enters the automatic cut-off control unit 2; the automatic cut-off control unit 2 cuts off or connects the sample gas connected to the sample gas to enter the refrigeration unit 3 according to the control instruction of the process operation program of the lock hopper, and the sample gas enters the pressure detection unit 4 after being further cooled; when the pressure of the sample gas is lower than 1bar, the pressure increasing and decreasing sampling unit 5 starts a sampling pump to operate, so that the sample gas is pressurized, and the flow rate is ensured to meet the requirements of a subsequent system; when the gas pressure of the sample is detected to be higher than 1bar, the pressure increasing and decreasing sampling unit 5 stops the operation of the sampling pump, and the output pressure is adjusted to 0.3bar by means of the pressure reducing adjusting valve, so that the flow can meet the requirements of a subsequent system; the sample gas is filtered for the second time in the pressure increasing and decreasing sampling unit 5, and the waste liquid generated after filtering enters the automatic liquid discharging unit 7; when the waste liquid in the automatic liquid discharging unit 7 is accumulated to a certain liquid level, the waste liquid discharging can be automatically started; the sample gas after the second filtration enters the water stabilizing unit 8, so that the gas pressure is maintained in a certain range, and the gas pressure beyond the range can overflow through the water stabilizing unit 8; the sample gas after pressure stabilization enters a membrane filtration unit, all trace liquid in the gas is removed and then enters an analysis unit for gas analysis of an instrument, and the analyzed sample and the sample overflowing from the water stabilization unit 8 are treated by a discharge absorption unit 11 and then discharged to the atmosphere.

The utility model discloses the curved 45 of U type to the steady unit of water interpolation has ensured that the liquid in the steady jar 38 of water can not appear the phenomenon of outflow in the twinkling of an eye along with the rising of sample gas pressure, has guaranteed the reliability of steady voltage jar 38 steady voltage, and sample pressure is the fluctuation of within a certain range promptly, and the overflow mouth all has no water discharge, has guaranteed the stability of the height of water level, has guaranteed the appearance instrument flow of advancing to the accuracy of the instrument reading of assurance.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

The system comprises a pretreatment unit (1), an automatic cut-off control unit (2), a refrigeration unit (3), a pressure detection unit (4), a pressure increase and decrease sampling unit (5), a standby pressure increase and decrease sampling unit (6), an automatic liquid drainage unit (7), a water stabilization unit (8), a membrane filtration unit (9), an analysis unit (10) and a discharge absorption unit (11);

the inlet end of the pretreatment unit (1) is connected with a process pipeline flange; the outlet end of the pretreatment unit (1) is connected with the inlet end of the automatic cut-off control unit (2); the outlet end of the automatic cut-off control unit (2) is connected with the inlet end of the refrigeration unit (3); the outlet end of the refrigeration unit (3) is connected with the inlet end of the pressure detection unit (4); the outlet end of the pressure detection unit (4) is connected with the inlet ends of the pressure increasing and reducing sampling unit (5) and the spare pressure increasing and reducing sampling unit (6); the outlet ends of the pressure increasing and reducing sampling unit (5) and the standby pressure increasing and reducing sampling unit (6) are connected with the inlet end of the water stabilizing unit (8); the discharge ends of the pressure increasing and reducing sampling unit (5) and the spare pressure increasing and reducing sampling unit (6) are connected with the inlet end of the automatic liquid drainage unit (7); the outlet end of the automatic liquid discharging unit (7) is connected with a discharging pipeline; the outlet end of the water stabilizing unit (8) is connected with the inlet end of the membrane filtering unit (9); the outlet end of the membrane filtration unit (9) is connected with the inlet end of the analysis unit (10); the outlet end of the analysis unit (10) is connected to the discharge absorption unit (11);

the water stabilizing unit (8) is characterized by comprising a third ball valve (36), a glass observation tube (37), a water stabilizing tank (38) and a second maintenance ball valve (39); an upward U-shaped bend (45) is added at the overflow port of the water stabilization tank (38), when the water level of the water stabilization tank (38) does not reach the top of the U-shaped bend (45), the water cannot flow out through the overflow port, and clean water enters the water stabilization tank (38) through the three ball valves (36) and the glass observation tube (37) in sequence and finally passes through the top end of the U-shaped bend (45) to form siphon, so that the clean water is discharged from the overflow port.
2. The S-Zorb lock hopper on-line analysis system of claim 1, wherein the pre-treatment unit (1) comprises a cooling coil (44), a needle valve (12), a filter element (13), a ball valve (14), a needle valve (15), a filter element (16) and a ball valve (17), and the cooling coil (44) is made of 1/4-inch stainless steel coil.
3. An S-Zorb lock hopper on-line analysis system according to claim 1, characterized in that the automatic shut-off control unit (2) comprises a three-way ball valve number one (18), a shut-off solenoid valve (19), a shut-off pneumatic valve 20 and a three-way ball valve number two (21).
4. An S-Zorb lock hopper on-line analysis system according to claim 1 wherein the refrigeration unit (3) comprises a cyclone refrigerator (22), a discharge ball valve (23); the lower part of the cyclone refrigerator (22) is connected with a discharge ball valve (23).
5. The S-Zorb lock hopper on-line analysis system according to claim 1, wherein the pressure detection unit (4) comprises a pressure detector (24).
6. The S-Zorb lock hopper on-line analysis system of claim 1, wherein the pressure increasing and reducing sampling unit (5) comprises a pressure reducing regulating valve (25), a sampling pump (26), a needle valve (27) and a filter element (28).
7. The S-Zorb lock hopper on-line analysis system of claim 1, wherein the spare pressure and increase sampling unit (6) comprises a second pressure and decrease regulating valve (29), a second sampling pump (30), a fourth needle valve (31), and a fourth filter cartridge (32).
8. The S-Zorb lock hopper on-line analysis system according to claim 1, wherein the automatic draining unit (7) comprises a first automatic draining tank (33), a second automatic draining tank (34), a first maintenance ball valve (35).
9. The S-Zorb lock hopper on-line analysis system of claim 1, wherein the membrane filtration unit (9) comprises a flow meter (40), a membrane filter (41).
10. The S-Zorb lock hopper online analysis system of claim 1, wherein the analysis unit (10) includes an analysis meter (42); the emission absorbing unit (11) includes an emission absorbing means (43).