Steam degassing hydrogen conductivity on-line measuring device

Abstract

A steam degassing hydrogen conductivity on-line measuring device comprises a steam inlet pipe, coolers, a thermometer, an electromagnetic valve, a pressure gauge, a flow meter, an electric regulating valve, a conductivity meter, an ion exchange column, an electric heater, a control cabinet and the like, steam enters the two coolers which are connected in series and conducts reverse heat exchange with circulating water for cooling, and then the steam passes through the electromagnetic valve after being subjected to temperature measurement through the thermometer; measuring the pressure through a pressure gauge, measuring the flow through a flow meter, controlling the flow through an electric regulating valve, measuring the conductivity through a conductivity meter, entering an ion exchange column to remove positive ions such as ammonia radicals, measuring through the conductivity meter and the flow meter, heating through an electric heater to remove sulfur dioxide, and measuring through a thermometer and the conductivity meter. A measurement result of the degassing hydrogen conductivity is obtained, and online measurement of the steam degassing hydrogen conductivity is realized. The device is simple in structure, stable, safe and reliable in process technology, good in effect and low in energy consumption, can adapt to steam of different qualities, can perform online measurement on multiple streams of steam simultaneously, and is easy to industrially popularize and apply.

Description

Technical Field

[0001] The utility model belongs to the field of degassing hydrogen conductivity measurement, and in particular relates to an online measurement device for steam degassing hydrogen conductivity. Background Art

[0002] Steam is an indispensable material in industrial production applications. Steam participates in industrial production as both a heat source and a power source. Different devices have different requirements for steam quality. Directly measuring the content of various salts in steam is not only cumbersome and time-consuming, but also cannot achieve dynamic online measurement. The degassed hydrogen conductivity can eliminate the interference of ammonia and carbon dioxide, and is the simplest and most direct parameter reflecting the steam quality. Therefore, it is a necessary and beneficial measure to study a steam degassed hydrogen conductivity online measurement device to monitor the steam quality in real time and avoid damage to steam-driven equipment or scaling of heat exchange equipment. Summary of the invention

[0003] The utility model provides a steam degassing hydrogen conductivity online measuring device, comprising a cooling unit, an ion exchange unit, and an electric heating unit;

[0004] The cooling unit includes a steam inlet pipe, a cooler 1, a cooler 2, a thermometer 1, and a solenoid valve; the lower end of the cooler 2 is connected to a circulating water inlet pipe, and a Y-type filter is installed on the circulating water inlet pipe to intercept sludge and debris; the upper end of the cooler 1 is connected to a circulating water outlet pipe;

[0005] The cooling unit is connected in sequence to a pressure gauge, a flow meter, an electric regulating valve, and a conductivity meter;

[0006] The ion exchange unit includes an ion exchange column, a conductivity meter 2, and a flow meter 2;

[0007] The electric heating unit includes an electric heater, a second thermometer, and a third conductivity meter;

[0008] The thermometer 1, the solenoid valve, the pressure gauge, the flowmeter 1, the electric regulating valve, the conductivity meter 1, the conductivity meter 2, the flowmeter 2, the electric heater, the thermometer 2 and the conductivity meter 3 are controlled by a control cabinet.

[0009] The cooling unit can cool multiple steam streams in parallel. Each steam stream is cooled to below 30°C by cooler 1 and cooler 2 connected in series to form water, and then enters a subsequent device to measure the degassed hydrogen conductivity, thereby achieving measurement of multiple samples.

[0010] The cooler 1 and the cooler 2 are connected in series. The cooler 1 and the cooler 2 adopt a double-helix shell and tube heat exchanger. The steam flows through the tube side, and the cooling water adopts the circulating water of the industrial cooling tower and flows through the shell side. The steam and the circulating water perform reverse heat exchange and cooling. The tube side and the shell side of the cooler are connected by flange bolts, which is convenient for disassembly to regularly clean the dirt on the outer wall of the coil. The steam flows in from the upper inlet of the cooler, is cooled by the double-helix shell and tube heat exchanger, and then flows out from the upper outlet. The circulating water flows in from the lower inlet of the cooler and flows out from the upper outlet.

[0011] The solenoid valve automatically switches different steams to enter the device for measurement according to the set time, the electric regulating valve automatically adjusts the flow rate according to the flow feedback of flow meter 2, the electric heater automatically adjusts the temperature according to the temperature feedback of thermometer 2, thermometer 1, thermometer 2, pressure gauge, flowmeter 1, flowmeter 2, conductivity meter 1, conductivity meter 2, conductivity meter 3 are all displayed through the control cabinet and have the function of introducing DCS system.

[0012] The shell of the ion exchange column is made of a transparent hard material, and is made of one of polycarbonate, polymethyl methacrylate, polystyrene, and polytetrafluoroethylene; the interior of the ion exchange column is filled with a color-changing cationic resin, and whether the resin is invalid can be visually judged by the color change; the ion exchange column is connected to the front and rear pipes by a snap-on connection, which is convenient for disassembly, replacement or regeneration of the resin; when the ion exchange column is filled with resin, a 1-2 cm space is reserved on the upper part to prevent the resin from expanding and damaging the shell.

[0013] The water pressure after cooling by the cooler 2 is controlled at 0.2-0.4 MPa by valve 1, and the flow rate at the outlet of the ion exchange column is controlled at 0.1-0.5 L / min by an electric regulating valve.

[0014] The electric heater stably controls the water temperature at 100-105°C according to the indication of the second thermometer.

[0015] The pipeline, valve one, valve two, valve three, valve four, cooler one, cooler two, solenoid valve, and electric regulating valve are all made of 304 or 316 stainless steel.

[0016] When the device is in use, steam is introduced through the steam inlet pipe, and then enters the cooler to cool the steam into water. The amount of steam entering is controlled by a valve, and the conductivity is measured after measuring the temperature, pressure, and flow rate. Then the steam enters the ion exchange column to remove cations such as ammonia, and the conductivity after deammoniation is measured. Then the steam enters the electric heater to remove carbon dioxide, and then the conductivity after degassing is measured. The last conductivity result measured is the degassed hydrogen conductivity. The three conductivities can be used to observe the operating effects of the ion exchange column and the electric heater, and online control and display can be achieved through the control cabinet.

[0017] The beneficial effects of the utility model are as follows:

[0018] (1) The utility model provides an online measurement device for steam degassing hydrogen conductivity, which has a simple structure, stable, safe and reliable process technology, good effect and low energy consumption, can adapt to steam of different qualities, and can perform online measurement on multiple steam streams at the same time.

[0019] (2) The outer shell of the ion exchange column of the utility model is made of transparent hard material, and the inside is filled with color-changing cationic resin. The failure of the resin can be visually judged by the color change; the ion exchange column and the front and rear pipes are connected by a snap-on type, which is convenient for disassembly, replacement or regeneration of the resin.

[0020] (3) The utility model adopts a control cabinet connected with thermometers, pressure gauges, flow meters, conductivity meters, heaters, valves and other equipment to achieve online control and display.

[0021] (4) Other beneficial effects: The use of electric heaters for degassing can automatically and accurately control the heating temperature through feedback, ensuring the degassing effect and measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Device diagram of the utility model.

[0023] Notes in the figure:

[0024] 1. Steam inlet pipe, 2. Cooler 1, 3. Cooler 2, 4. Thermometer 1, 5. Solenoid valve, 6. Pressure gauge, 7. Flowmeter 1, 8. Electric regulating valve, 9. Conductivity meter 1, 10. Ion exchange column, 11. Conductivity meter 2, 12. Flowmeter 2, 13. Electric heater, 14. Thermometer 2, 15. Conductivity meter 3, 16. Control cabinet, 17. Circulating water inlet pipe, 18. Y-type filter, 19. Circulating water outlet pipe, 20. Valve 1, 21. Valve 2, 22. Valve 3, 23. Valve 4. DETAILED DESCRIPTION

[0025] The embodiments of the present invention will be described in detail below with reference to examples, but those skilled in the art will appreciate that the following examples are only used to illustrate the present invention and should not be construed as limiting the scope of the present invention.

[0026] Example 1

[0027] A steam degassing hydrogen conductivity online measuring device, such as Figure 1 As shown, it includes a cooling unit, an ion exchange unit, and an electric heating unit;

[0028] The cooling unit includes a steam inlet pipe 1, a cooler 2, a cooler 3, a thermometer 4, and a solenoid valve 5; the lower end of the cooler 3 is connected to a circulating water inlet pipe 17, and a Y-type filter 18 is installed on the circulating water inlet pipe 17 to intercept sludge and debris; the upper end of the cooler 2 is connected to a circulating water outlet pipe 19;

[0029] The cooling unit is connected in sequence to a pressure gauge 6, a flow meter 7, an electric regulating valve 8, and a conductivity meter 9;

[0030] The ion exchange unit includes an ion exchange column 10, a conductivity meter 11, and a flow meter 12;

[0031] The electric heating unit includes an electric heater 13, a thermometer 14, and a conductivity meter 15;

[0032] The thermometer 1 4 , the solenoid valve 5 , the pressure gauge 6 , the flowmeter 1 7 , the electric regulating valve 8 , the conductivity meter 1 9 , the conductivity meter 2 11 , the flowmeter 2 12 , the electric heater 13 , the thermometer 2 14 , and the conductivity meter 3 15 are controlled by a control cabinet 16 .

[0033] The cooling unit can cool multiple steam streams in parallel. Each steam stream is cooled to below 30°C through the series-connected cooler 1 2 and cooler 2 3 to form water, and then enters the subsequent device to measure the degassed hydrogen conductivity, thereby realizing the measurement of multiple samples.

[0034] The cooler 1 2 and cooler 2 3 are connected in series. Cooler 1 2 and cooler 2 3 adopt a double-helix shell and tube heat exchanger. The steam flows through the tube side, and the cooling water adopts the circulating water of the industrial cooling tower and flows through the shell side. The steam and the circulating water perform reverse heat exchange and cooling. The tube side and the shell side of cooler 1 2 and cooler 2 3 are connected by flange bolts, which is convenient for disassembly to regularly clean the dirt on the outer wall of the coil. The steam flows in from the upper inlet of cooler 1 2 and cooler 2 3, is cooled by the double-helix shell and tube heat exchanger, and then flows out from the upper outlet. The circulating water flows in from the lower inlet of cooler 1 2 and cooler 2 3 and flows out from the upper outlet.

[0035] The solenoid valve 5 automatically switches different steams to enter the device for measurement according to the set time, the electric regulating valve 8 automatically adjusts the flow rate according to the flow feedback of the flow meter 2 12, the electric heater 13 automatically adjusts the temperature according to the temperature feedback of the thermometer 2 14, the thermometer 1 4, the thermometer 2 14, the pressure gauge 6, the flow meter 1 7, the flow meter 2 12, the conductivity meter 1 9, the conductivity meter 2 11, and the conductivity meter 3 15 are all displayed through the control cabinet 16 and have the function of introducing the DCS system.

[0036] The shell of the ion exchange column 10 is made of a transparent hard material, and is made of one of polycarbonate, polymethyl methacrylate, polystyrene, and polytetrafluoroethylene; the interior of the ion exchange column 10 is filled with a color-changing cationic resin, and whether the resin is invalid can be visually judged by the color change; the ion exchange column 10 is connected to the front and rear pipes by a snap-on connection, which is convenient for disassembly, replacement or regeneration of the resin; when the ion exchange column 10 is filled with resin, a 1-2 cm space is reserved on the upper part to prevent the resin from expanding and damaging the shell.

[0037] The water pressure after cooling by the cooler 2 3 is controlled at 0.2-0.4 MPa through a valve 20, and the flow rate at the outlet of the ion exchange column 10 is controlled at 0.1-0.5 L / min through an electric regulating valve 8.

[0038] The electric heater 13 controls the water temperature stably at 100-105°C according to the reading of the thermometer 14.

[0039] The pipeline, valve 1 20, valve 2 21, valve 3 22, valve 4 23, cooler 1 2, cooler 2 3, solenoid valve 5, and electric regulating valve 8 are made of 304 or 316 stainless steel.

[0040] Example 2

[0041] The cooling water passes through the circulating water inlet pipe 17, intercepts sludge and other debris through the Y-type filter 18, and then enters the shell side of cooler 23 from the lower end of cooler 23, then flows out from the upper end of cooler 23, and then enters the shell side of cooler 12 from the lower end of cooler 12, and finally flows out from the circulating water outlet pipe 19 at the upper end of cooler 12 and returns to the circulating water cooling tower.

[0042] After passing through the steam inlet pipe 1 and valve 20, the steam enters the pipe paths of cooler 1 2 and cooler 2 3 in series, and performs reverse heat exchange and cooling with the circulating water. The steam inlet and outlet are both located at the upper ends of cooler 1 2 and cooler 2 3.

[0043] The steam is cooled by cooler 2 and cooler 3 in turn and becomes liquid water. After the temperature is measured by thermometer 4, it passes through solenoid valve 5, and then passes through pressure gauge 6 to measure the pressure, flowmeter 7 to measure the flow, electric regulating valve 8 to adjust the flow, conductivity meter 9 to measure the conductivity, and then enters ion exchange column 10 to remove cations such as ammonia, and then passes through conductivity meter 2 11 and flowmeter 2 12 in turn, enters electric heater 13 to be heated to remove sulfur dioxide, and then passes through thermometer 2 14 and conductivity meter 3 15 in turn to obtain the measurement result of degassed hydrogen conductivity.

Claims

1. A steam degassing hydrogen conductivity online measurement device, characterized in that: It includes a cooling unit, an ion exchange unit, and an electric heating unit; The cooling unit comprises a steam inlet pipe (1), a cooler 1 (2), a cooler 2 (3), a thermometer 1 (4), and a solenoid valve (5); the lower end of the cooler 2 (3) is connected to a circulating water inlet pipe (17), and a Y-type filter (18) is installed on the circulating water inlet pipe (17) to intercept sludge and debris; the upper end of the cooler 1 (2) is connected to a circulating water outlet pipe (19); The cooling unit is connected in sequence to a pressure gauge (6), a flow meter (7), an electric regulating valve (8), and a conductivity meter (9); The ion exchange unit comprises an ion exchange column (10), a second conductivity meter (11), and a second flow meter (12); The electric heating unit comprises an electric heater (13), a second thermometer (14), and a third conductivity meter (15); The thermometer 1 (4), the solenoid valve (5), the pressure gauge (6), the flowmeter 1 (7), the electric regulating valve (8), the conductivity meter 1 (9), the conductivity meter 2 (11), the flowmeter 2 (12), the electric heater (13), the thermometer 2 (14), and the conductivity meter 3 (15) are controlled by a control cabinet (16).

2. The steam degassing hydrogen conductivity online measuring device according to claim 1, characterized in that: The cooling units can be connected in parallel in multiple groups to cool multiple streams of steam.

3. The online measurement device for steam degassing hydrogen conductivity according to claim 1, characterized in that: The cooler 1 (2) and the cooler 2 (3) are connected in series. The cooler 1 (2) and the cooler 2 (3) adopt a double-helix shell-and-tube heat exchanger. The steam flows through the tube side. The cooling water adopts the circulating water of the industrial cooling tower and flows through the shell side. The steam and the circulating water are subjected to reverse heat exchange and cooling. The tube side and the shell side of the cooler 1 (2) and the cooler 2 (3) are connected by flange bolts, which is convenient for disassembly to regularly clean the dirt on the outer wall of the coil. The steam flows in from the upper inlet of the cooler 1 (2) and the cooler 2 (3), is cooled by the double-helix shell-and-tube heat exchanger, and then flows out from the upper outlet. The circulating water flows in from the lower inlet of the cooler 1 (2) and the cooler 2 (3), and flows out from the upper outlet.

4. The steam degassing hydrogen conductivity online measuring device according to claim 1, characterized in that: The solenoid valve (5) automatically switches different steams to enter the device for measurement according to the set time, the electric regulating valve (8) automatically adjusts the flow rate according to the flow rate feedback of the flow meter 2 (12), the electric heater (13) automatically adjusts the temperature according to the temperature feedback of the thermometer 2 (14), the thermometer 1 (4), the thermometer 2 (14), the pressure gauge (6), the flow meter 1 (7), the flow meter 2 (12), the conductivity meter 1 (9), the conductivity meter 2 (11), and the conductivity meter 3 (15) are all displayed through the control cabinet (16) and have the function of introducing a DCS system.

5. The steam degassing hydrogen conductivity online measuring device according to claim 1, characterized in that: The shell of the ion exchange column (10) is made of a transparent hard material, and is made of one of polycarbonate, polymethyl methacrylate, polystyrene, and polytetrafluoroethylene. The interior of the ion exchange column (10) is filled with a color-changing cationic resin, and whether the resin is invalid can be visually judged by color change. The ion exchange column (10) is connected to the front and rear pipes by a snap-fit ​​connection, which is convenient for disassembly, replacement or regeneration of the resin. When the ion exchange column (10) is filled with resin, a space of 1 to 2 cm is reserved on the upper part to prevent the resin from expanding and damaging the shell.

6. The steam degassing hydrogen conductivity online measuring device according to claim 1, characterized in that: The water pressure after cooling by the cooler 2 (3) is controlled at 0.2-0.4 MPa through the valve 1 (20), and the flow rate at the outlet of the ion exchange column (10) is controlled at 0.1-0.5 L / min through the electric regulating valve (8).

7. The steam degassing hydrogen conductivity online measuring device according to claim 1, characterized in that: The electric heater (13) stably controls the water temperature at 100-105°C according to the reading of the second thermometer (14).

8. The steam degassing hydrogen conductivity online measuring device according to claim 5, characterized in that: The pipeline, valve 1 (20), valve 2 (21), valve 3 (22), valve 4 (23), cooler 1 (2), cooler 2 (3), solenoid valve (5), and electric regulating valve (8) are made of 304 or 316 stainless steel.

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