Steam condensate water recycling, circulating, heating and reusing device

Abstract

The utility model discloses a steam condensate water recycling, circulating, heating and reusing device which is characterized in that a condensate water discharge pipe is arranged between a steam header pipe and a condensate water collecting tank, a heat supply pipe is arranged between the condensate water collecting tank and a heating pipe of an analyzer small room, and a heating water outlet pipe is arranged between the heating pipe and the condensate water discharge pipe; a waste gas utilization pipe is arranged between the heating jacket and the waste gas pipe, a one-way valve I is arranged on the waste gas utilization pipe, a waste gas circulating pipe is arranged between the heating jacket and the flue, and a one-way valve II is arranged on the waste gas circulating pipe. The steam condensate water generated by the hydrogen production device can be recycled, circularly heated and reused, waste of the condensate water is effectively prevented, the risk that people are scalded when the condensate water is discharged is avoided, an instrument box at a discharge point is prevented from being rusted and damaged, the condensate water is heated through waste gas, and the environment is protected. The heated condensate water is conveyed to the heating pipe to supply heat to the analyzer small room, naphthalene crystals separated out at low temperature are prevented from blocking the pressure guide pipe, real-time and accurate measurement of the oxygen content of the gas pipeline is guaranteed, and safe and stable operation of working conditions is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of steam utilization technology, specifically relating to a steam condensate recovery, recycling, heating, and reuse device. Background Technology

[0002] In the process of using 3.5MPa steam and feed gas to heat in the reformer and generate hydrogen through nickel catalyst catalysis, condensate will be generated in the steam pipeline when using steam. If the condensate is not removed, it will accumulate in the pipeline, leading to problems such as corrosion and water hammer.

[0003] To overcome the above-mentioned drawbacks, the existing technical solution is to connect the steam pipeline to the condensate drain pipe and discharge the condensate into the ditch. Discharging the condensate into the ditch not only causes waste, but also poses a risk of burns to personnel during the discharge process and causes the instrument boxes around the discharge point to be easily corroded by the steam carried by the condensate, increasing the company's operating costs. Utility Model Content

[0004] The purpose of this invention is to provide a steam condensate recovery, recycling, heating, and reuse device to solve the above-mentioned problems.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A steam condensate recovery, recycling, heating and reuse device includes a steam main pipe, a condensate collection mechanism, an analyzer room and a converter mechanism;

[0007] The condensate collection mechanism includes a condensate collection tank and a heating jacket installed inside the condensate collection tank. A condensate discharge pipe is connected between the steam main pipe and the condensate collection tank. A heating pipe is connected between the condensate collection tank and the inlet end of the heating pipe of the analyzer room. A heating outlet pipe is connected between the outlet end of the heating pipe and the condensate discharge pipe.

[0008] The converter structure includes a converter, a flue, an exhaust gas pipe, and a chimney connected in sequence. An exhaust gas utilization pipe connects the inlet end of the heating jacket to the exhaust gas pipe, and a one-way valve I is installed on the exhaust gas utilization pipe. An exhaust gas circulation pipe connects the exhaust end of the heating jacket to the flue, and a one-way valve II is installed on the exhaust gas circulation pipe. One-way valve I prevents 3.5MPa steam from flowing back into the heating water outlet pipe; one-way valve II returns the reused exhaust gas back to the flue.

[0009] To further realize this utility model, a booster pump and a thermal resistor I are provided on the heating pipe, and the booster pump and the thermal resistor I are electrically connected to the DSC respectively.

[0010] To further realize this utility model, a one-way valve III is installed on the heating outlet pipe. The one-way valve III delivers the reused condensate into the condensate drain pipe.

[0011] To further realize this utility model, the waste gas utilization pipe is sequentially equipped with a shut-off valve I, a cut-off valve, a regulating valve, a thermal resistor II, and a shut-off valve II. The cut-off valve and the regulating valve are electrically connected to the DSC. The cut-off valve can remotely cut off or utilize the waste gas in the waste gas utilization pipe.

[0012] To further realize this utility model, the exhaust pipe includes exhaust pipe I and exhaust pipe II, an induced draft fan is installed between exhaust pipe I and exhaust pipe II, one end of exhaust pipe I is connected to the exhaust end of the flue, the exhaust end of exhaust pipe II is connected to the chimney, and the inlet end of the exhaust gas utilization pipe is connected to exhaust pipe II.

[0013] To further realize this utility model, a drain valve is provided on the condensate drain pipe.

[0014] To further realize this utility model, an inlet flange for the condensate collection tank is provided at the connection between the condensate collection tank and the condensate discharge pipe, and an outlet flange for the condensate collection tank is provided at the connection between the condensate collection tank and the heating pipe.

[0015] To further realize this utility model, a heating jacket inlet flange is provided at the connection between the heating jacket and the waste gas utilization pipe, and a heating jacket outlet flange is provided at the connection between the heating jacket and the waste gas circulation pipe.

[0016] To further realize this utility model, a frequency converter is provided on the booster pump, and the frequency converter is electrically connected to the DSC.

[0017] The advantages of this utility model compared to the prior art are as follows:

[0018] This utility model has low cost, simple installation and operation, reliable use, and convenient maintenance. It can recover, circulate, and reheat the steam condensate generated by the hydrogen production unit, effectively preventing condensate waste and eliminating the risk of personnel being scalded during condensate discharge, as well as preventing corrosion damage to the instrument box at the discharge point. Maintenance personnel only need to add a steam condensate recovery and circulation heating device, connecting the 3.5MPa steam main pipe to the condensate discharge pipe, and then connecting it to the inlet flange of the condensate collection tank via a flange. The waste gas generated by the converter is introduced into the heating jacket through the waste gas utilization pipe. The waste gas at approximately 120°C in the heating jacket heats the condensate at approximately 40°C in the condensate collection tank. The heated condensate is then pumped by a booster pump on the heating pipe to the heating pipe in the analyzer room, providing heat to the analyzer room and preventing the low-temperature precipitation of naphthalene crystals in the analyzer room's pipelines, which could clog the pressure guide pipe. This ensures real-time and accurate measurement of the oxygen content in the gas pipeline, guarantees safe and stable operation, and saves the company's operating costs.

[0019] This invention incorporates a frequency converter and a resistance temperature detector (RTD). By controlling the current of the frequency converter via a DSC, the speed of the booster pump can be adjusted, thereby regulating the flow rate of heating water in the heating pipes and the temperature inside the analyzer chamber. The RTD signal is connected to the DCS system, allowing personnel and instrument maintenance workers to remotely observe the temperature of the medium in the waste gas utilization pipe and heating pipe, and also view historical temperature data through historical curves. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] The meanings of the reference numerals in the attached diagram are as follows: 1. Steam main; 2. Analyzer room; 3. Condensate collection tank; 4. Heating jacket; 5. Condensate drain pipe; 6. Heating pipe; 7. Heating supply pipe; 8. Heating outlet pipe; 9. Converter; 10. Flue; 11. Exhaust gas pipe; 11-1. Exhaust gas pipe I; 11-2. Exhaust gas pipe II; 12. Chimney; 13. Exhaust gas utilization pipe; 14. One-way valve I; 15. Exhaust gas recirculation pipe; 6. Check valve II; 17. Booster pump; 18. Resistance temperature detector I; 19. DSC; 20. Check valve III; 21. Shut-off valve I; 22. Cut-off valve; 23. Regulating valve; 24. Resistance temperature detector II; 25. Shut-off valve II; 26. Exhaust fan; 27. Drainage valve; 28. Collection tank inlet flange; 29. ​​Collection tank outlet flange; 30. Heating jacket inlet flange; 31. Heating jacket outlet flange; 32. Frequency converter. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1 As shown, a steam condensate recovery, recycling, heating and reuse device includes a steam main pipe 1, a condensate collection mechanism, an analyzer room 2 and a converter mechanism;

[0024] The condensate collection mechanism includes a condensate collection tank 3 and a heating jacket 4 installed inside the condensate collection tank 3. A condensate discharge pipe 5 is installed between the steam main pipe 1 and the condensate collection tank 3. A collection tank inlet flange 28 is installed at the connection between the condensate collection tank 3 and the condensate discharge pipe 5. A heating pipe 7 is installed between the condensate collection tank 3 and the inlet end of the heating pipe 6 of the analyzer room 2. A collection tank outlet flange 29 is installed at the connection between the condensate collection tank 3 and the heating pipe 7. A booster pump 17 and a thermal resistor I 18 are installed on the heating pipe 7. The booster pump 17 and the thermal resistor I 18 are electrically connected to DSC 19 respectively. A frequency converter 32 is installed on the booster pump 17. The frequency converter 32 is electrically connected to DSC 19. A heating outlet pipe 8 is installed between the outlet end of the heating pipe 6 and the condensate discharge pipe 5. A drain valve 27 is installed on the condensate discharge pipe 5. A one-way valve III 20 is installed on the heating outlet pipe 8.

[0025] The converter structure includes a converter 9, a flue 10, an exhaust pipe 11, and a chimney 12 connected in sequence. An exhaust gas utilization pipe 13 connects the inlet end of the heating jacket 4 and the exhaust pipe 11. A heating jacket inlet flange 30 is installed at the connection between the heating jacket 4 and the exhaust gas utilization pipe 13. The exhaust pipe 11 includes exhaust pipe I 11-1 and exhaust pipe II 11-2. An induced draft fan 26 is installed between exhaust pipe I 11-1 and exhaust pipe II 11-2. One end of exhaust pipe I 11-1 is connected to the exhaust end of the flue 10, and the exhaust end of exhaust pipe II 11-2 is connected to the exhaust end of the flue 10. Chimney 12 is connected, and the inlet end of exhaust gas utilization pipe 13 is connected to exhaust gas pipe II 11-2. One-way valve I 14, shut-off valve I 21, cut-off valve 22, regulating valve 23, thermal resistance II 24 and shut-off valve II 25 are sequentially installed on exhaust gas utilization pipe 13. Cut-off valve 22 and regulating valve 23 are electrically connected to DSC19 respectively. Exhaust gas circulation pipe 15 is installed between the exhaust end of heating jacket 4 and flue 10. Heating jacket outlet flange 31 is installed at the connection between heating jacket 4 and exhaust gas circulation pipe 15. One-way valve II 16 is installed on exhaust gas circulation pipe 15.

[0026] The waste gas generated by the converter is introduced into the heating jacket through the waste gas utilization pipe and heated to about 120°C. The condensate at about 40°C generated from the 3.5MPa steam main is transported to the condensate collection tank through the condensate discharge pipe. The condensate is heated by the heated waste gas and then transported to the heating pipe of the analyzer room through the booster pump on the heating pipe. This provides heat to the analyzer room and prevents the low-temperature precipitation of naphthalene crystals in the pipelines of the analyzer room, thus blocking the pressure guide pipe. This ensures the real-time and accurate measurement of the oxygen content in the gas pipeline, guarantees the safe and stable operation of the working conditions, and saves the company's operating costs.

[0027] Connect the 3.5MPa steam main 1 to the condensate drain pipe 5, and then connect it to the condensate collection tank inlet flange 28 of the condensate collection tank 3 via a flange. Introduce the waste gas generated by the converter 9 into the heating jacket 4 through the waste gas utilization pipe 13. The waste gas at about 120°C in the heating jacket 4 heats the condensate at about 40°C in the condensate collection tank 3. The heated condensate is then transported to the heating pipe 6 of the analyzer room 2 by the booster pump 17 on the heating pipe 7 to provide heat to the analyzer room 2. This prevents the low-temperature precipitation of naphthalene crystals in the pipeline of the analyzer room 2, which could block the pressure guide pipe. This ensures the real-time and accurate measurement of the oxygen content in the gas pipeline, guarantees the safe and stable operation of the working conditions, and saves the company's operating costs.

Claims

1. A steam condensate water recovery and recycling heating reuse device, characterized by: It comprises a steam main (1), a condensate collecting mechanism, an analyzer cubicle (2) and a reformer mechanism; The condensate collecting mechanism comprises a condensate collecting tank (3) and a heating jacket (4) arranged in the condensate collecting tank (3), a condensate discharge pipe (5) is arranged between the steam main (1) and the condensate collecting tank (3) to communicate, a heat supply pipe (7) is arranged between the condensate collecting tank (3) and the inlet end of a heating pipe (6) of the analyzer cubicle (2) to communicate, a heating outlet pipe (8) is arranged between the outlet end of the heating pipe (6) and the condensate discharge pipe (5) to communicate; The reformer mechanism comprises a reformer (9), a flue (10), a waste gas pipe (11) and a chimney (12) which are sequentially communicated, a waste gas utilization pipe (13) is arranged between the inlet end of the heating jacket (4) and the waste gas pipe (11) to communicate, a one-way valve I (14) is arranged on the waste gas utilization pipe (13), a waste gas circulation pipe (15) is arranged between the exhaust end of the heating jacket (4) and the flue (10) to communicate, a one-way valve II (16) is arranged on the waste gas circulation pipe (15).

2. The steam condensate water recovery and recycling heating reuse device according to claim 1, characterized in that: A booster pump (17) and a thermal resistor I (18) are arranged on the heat supply pipe (7), and the booster pump (17) and the thermal resistor I (18) are electrically connected with a DSC (19) respectively.

3. The steam condensate water recovery and recycling heating reuse device of claim 2, wherein: A one-way valve III (20) is arranged on the heating outlet pipe (8).

4. The steam condensate water recovery and recycling heating reuse device of claim 3, wherein: A stop valve I (21), a cut-off valve (22), a regulating valve (23), a thermal resistor II (24) and a stop valve II (25) are sequentially arranged on the waste gas utilization pipe (13), and the cut-off valve (22) and the regulating valve (23) are electrically connected with the DSC (19) respectively.

5. The steam condensate water recovery and recycling heating reuse device of claim 4, wherein: The waste gas pipe (11) comprises a waste gas pipe I (11-1) and a waste gas pipe II (11-2), an induced draft fan (26) is arranged between the waste gas pipe I (11-1) and the waste gas pipe II (11-2), one end of the waste gas pipe I (11-1) is communicated with the exhaust end of the flue (10), the exhaust end of the waste gas pipe II (11-2) is communicated with the chimney (12), and the inlet end of the waste gas utilization pipe (13) is communicated with the waste gas pipe II (11-2).

6. The steam condensate water recovery and recycling heating reuse device of claim 5, wherein: A guide valve (27) is arranged on the condensate discharge pipe (5).

7. The steam condensate water recovery and recycling heating reuse device of claim 6, wherein: A collecting tank inlet flange (28) is arranged at the connection between the condensate collecting tank (3) and the condensate discharge pipe (5), and a collecting tank outlet flange (29) is arranged at the connection between the condensate collecting tank (3) and the heat supply pipe (7).

8. The steam condensate water recovery and recycling heating reuse device of claim 7, wherein: A heating jacket inlet flange (30) is arranged at the connection between the heating jacket (4) and the waste gas utilization pipe (13), and a heating jacket outlet flange (31) is arranged at the connection between the heating jacket (4) and the waste gas circulation pipe (15).

9. The steam condensate water recovery and recycling heating reuse device of claim 7, wherein: A frequency converter (32) is arranged on the booster pump (17), and the frequency converter (32) is electrically connected with the DSC (19).

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