Online adjustable dead steam recovery system

Abstract

The utility model discloses an on-line adjustable dead steam recovery system which comprises an on-line adjustable ejector, an auxiliary assembly is arranged on the on-line adjustable ejector, and solid pollutants such as particulate matter and impurities in dead steam can be effectively intercepted through the auxiliary assembly arranged on the on-line adjustable ejector. Harmful gas, peculiar smell and part of soluble impurities in the dead steam can be adsorbed, so that the dead steam is efficiently purified, the steam quality is improved, the subsequent dead steam recycling process is ensured to be smoothly carried out, impurities adhered to the filter screen plate can be automatically cleaned, long-term stable operation of the filter structure is ensured, and the service life of the filter structure is prolonged. According to the system, the manual cleaning frequency and workload are reduced, the manual maintenance cost and labor intensity are reduced, meanwhile, the problems of system faults and efficiency reduction caused by untimely or incomplete manual cleaning are solved, and the reliability and maintainability of the system are improved.

Description

Technical Field

[0001] This utility model relates to the field of waste steam recovery technology, and more specifically, to an online adjustable waste steam recovery system. Background Technology

[0002] The online adjustable waste steam recovery system is an energy-saving system used in industrial production (such as chemical, power, papermaking, food processing and other industries) to efficiently recover and reuse low-temperature and low-pressure steam (i.e. "waste steam"). The system can dynamically adjust the waste steam recovery parameters without affecting the operation of the main process, thereby improving energy utilization and reducing energy consumption and operating costs.

[0003] However, the filtration structure used in the waste steam recovery system is used to purify impurities and particulate matter in the steam. The filtration device lacks an automatic cleaning function, making it difficult to completely remove some adhesive impurities. Long-term accumulation will lead to increased pressure drop and unstable steam flow.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in related technologies, this utility model proposes an online adjustable exhaust steam recovery system to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] An online adjustable exhaust steam recovery system includes an online adjustable injector and an auxiliary component on the online adjustable injector. The auxiliary component includes an auxiliary cylinder with multiple connecting ends on the online adjustable injector connected by bolts. The inner wall of the auxiliary cylinder is provided with a filter screen plate and an activated carbon plate. An auxiliary groove is opened on the auxiliary cylinder. The inner wall of the auxiliary groove is provided with an auxiliary cleaning plate. An electric telescopic rod is provided on one side of the auxiliary cleaning plate. An auxiliary frame is provided at one end of the electric telescopic rod. One end of the auxiliary frame is connected to the surface of the auxiliary cylinder.

[0008] Furthermore, in order to better collect the cleaned impurities, a collection frame is provided on the surface of the auxiliary cylinder, and an installation groove is provided on the collection frame, with a collection box installed on the inner wall of the installation groove.

[0009] Furthermore, in order to better perform heat exchange, gas-liquid separation and recycling, two auxiliary cylinders are respectively connected to a DC regulating valve and a check valve via pipes, and another auxiliary cylinder is respectively connected to a flow transmitter and a shut-off valve via pipes. One end of the shut-off valve is connected to an external instrument air pressure interface via a pipe, and one end of the flow transmitter is connected to a DC regulating valve via a pipe. One end of the DC regulating valve is connected to a check valve, a shut-off valve, and an external low-pressure interface via pipes.

[0010] Furthermore, to better facilitate heat exchange, gas-liquid separation, and recycling, one end of DC regulating valve one is connected in sequence to flow transmitter two, shut-off valve two, and an external medium-pressure gas interface via pipelines. One end of check valve one is connected in sequence to DC regulating valve three, flow transmitter three, and shut-off valve three via pipelines. One end of shut-off valve three is connected to a waste steam tank via a pipeline. The waste steam tank is connected to a condensate interface and a vaporization tank via pipelines. One end of the vaporization tank is connected to DC regulating valve four via a pipeline. DC regulating valve four, DC regulating valve three, flow transmitter three, flow transmitter two, and DC regulating valve one are connected to a proportional control valve via pipelines.

[0011] Furthermore, for better control, one end of the online adjustable injector is equipped with an instrument, an instrument, and a backup pressure valve via pipelines. The backup pressure valve is connected to the instrument, and one end of the backup pressure valve is connected to a shut-off valve, which is connected to a check valve and a flow transmitter, which are connected to a check valve and a flow transmitter, respectively, via pipelines. One end of the flow transmitter is connected to a DC regulating valve.

[0012] Furthermore, for better material feeding, a desuperheating water valve is installed on the online adjustable injector. The desuperheating water valve is connected to the instrument installed on the first device via a pipeline to a DC regulating valve five. One end of the DC regulating valve five is connected to a shut-off valve four via a pipeline. One end of the shut-off valve four is connected to a buffer tank via a pipeline. The buffer tank is connected in sequence via a check valve three, a shut-off valve five, and a booster water pump via pipelines. The booster water pump is connected to multiple interfaces via pipelines, one of which is connected to the instrument installed on the third device via a pipeline. One end of the instrument installed on the third device is connected to the buffer tank via a pipeline.

[0013] Furthermore, for better material supply, a shut-off valve 6 and a cooling water storage tank are connected to one side of the booster pump via a pipeline. The cooling water storage tank is connected to a DCS instrument and a regulating valve 1 via multiple pipelines. The regulating valve 1 is connected to the DCS instrument via a pipeline. One end of the regulating valve 1 is connected to a shut-off valve 7 via a pipeline. One end of the shut-off valve 7 is connected to an external cooling water interface via a pipeline.

[0014] Furthermore, to better collect waste steam, check valve 2 and flow transmitter 4 are connected via pipelines to shut-off valve 3, instrument 4, and DC regulating valve 6. One end of DC regulating valve 6 is connected to a user interface via a pipeline. Instrument 4 and DC regulating valve 6 are connected via pipelines to an automatic safety valve, ammonia stripping tank, MVR tank, old triple-effect tank, new triple-effect tank, regulating valve 2, and biological water tank in sequence. The ammonia stripping tank, MVR tank, old triple-effect tank, and new triple-effect tank are connected via pipelines to a condensate recovery interface.

[0015] The beneficial effects of this utility model are as follows: the auxiliary components set by the online adjustable injector can effectively intercept solid pollutants such as particulate matter and impurities in the exhaust steam, and can adsorb harmful gases, odors and some dissolved impurities, thereby achieving efficient purification of exhaust steam, improving steam quality, ensuring the smooth progress of subsequent exhaust steam recycling process, and can also automatically clean impurities adhering to the filter screen, ensuring the long-term stable operation of the filter structure, reducing the frequency and workload of manual cleaning, reducing manual maintenance costs and labor intensity, and avoiding system failures and efficiency reduction caused by untimely or incomplete manual cleaning, thus improving the reliability and maintainability of the system. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the process structure of an online adjustable waste steam recovery system according to an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the structure of an online adjustable injector in an online adjustable waste steam recovery system according to an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the auxiliary component structure of an online adjustable waste steam recovery system according to an embodiment of the present utility model;

[0020] Figure 4 This is a partial flow diagram of an online adjustable waste steam recovery system according to an embodiment of the present invention. Figure 1 ;

[0021] Figure 5 This is a partial flow diagram of an online adjustable waste steam recovery system according to an embodiment of the present invention. Figure 2 .

[0022] In the picture:

[0023] 1. Online adjustable injector; 2. Auxiliary components; 201. Auxiliary cylinder; 202. Filter screen; 203. Activated carbon plate; 204. Auxiliary cleaning plate; 205. Electric telescopic rod; 206. Auxiliary frame; 3. Collection frame; 4. Collection box; 5. DC regulating valve one; 6. Check valve one; 7. Flow transmitter one; 8. Shut-off valve one; 9. External instrument air compressor interface; 10. DC regulating valve two; 11. Check valve; 12. Shut-off valve one; 13. External low-pressure interface; 14. Flow transmitter two; 15. Shut-off valve two; 16. External medium-pressure gas interface; 17. DC regulating valve three; 18. Flow transmitter three; 19. Shut-off valve three; 20. Waste steam tank; 21. Condensate interface; 22. Vaporizer; 23. DC regulating valve four; 24. Proportional control valve; 25. Installed instrument one; 2 6. Install Instrument II; 27. Backup Pressure Valve; 28. Shut-off Valve II; 29. ​​Check Valve II; 30. Flow Transmitter IV; 31. Desuperheating Water Valve; 32. DC Regulating Valve V; 33. Shut-off Valve IV; 34. Buffer Tank; 35. Check Valve III; 36. Shut-off Valve V; 37. Booster Pump; 38. Interface; 39. Install Instrument III; 40. Shut-off Valve VI; 41. Cooling Water Storage Tank; 42. DCS Instrument; 43. Regulating Valve I; 44. Shut-off Valve VII; 45. External Cooling Water Interface; 46. Shut-off Valve III; 47. Install Instrument IV; 48. DC Regulating Valve VI; 49. User Interface; 50. Automatic Safety Valve; 51. Ammonia Removal Tank; 52. MVR Tank; 53. Old Triple-Effect Tank; 54. New Triple-Effect Tank; 55. Regulating Valve II; 56. Biochemical Water Tank; 57. Condensate Recovery Interface. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1:

[0026] like Figures 1-3As shown, an online adjustable exhaust steam recovery system according to an embodiment of the present utility model includes an online adjustable injector 1, an auxiliary component 2 is provided on the online adjustable injector 1, the auxiliary component 2 includes an auxiliary cylinder 201 with three connecting ends on the online adjustable injector 1 connected by bolts, a filter screen plate 202 and an activated carbon plate 203 are provided on the inner wall of the auxiliary cylinder 201, an auxiliary groove is provided on the auxiliary cylinder 201, an auxiliary cleaning plate 204 is provided on the inner wall of the auxiliary groove, an electric telescopic rod 205 is provided on one side of the auxiliary cleaning plate 204, an auxiliary frame 206 is provided at one end of the electric telescopic rod 205, one end of the auxiliary frame 206 is connected to the surface of the auxiliary cylinder 201, a collection frame 3 is provided on the surface of the auxiliary cylinder 201, an installation groove is provided on the collection frame 3, and a collection box 4 is installed on the inner wall of the installation groove;

[0027] Two of the auxiliary cylinders 201 are connected to a DC regulating valve 5 and a check valve 6 via pipes, respectively. The other auxiliary cylinder 201 is connected to a flow transmitter 7 and a shut-off valve 8 via pipes. One end of the shut-off valve 8 is connected to an external instrument air pressure interface 9 via a pipe. One end of the flow transmitter 7 is connected to a DC regulating valve 10 via a pipe. One end of the DC regulating valve 10 is connected to a one-way valve 11, a shut-off valve 12, and an external low-pressure interface 13 via pipes in sequence.

[0028] One end of DC regulating valve 15 is connected in sequence to flow transmitter 2 14, shut-off valve 2 15 and external medium-pressure gas interface 16 via pipelines. One end of check valve 16 is connected in sequence to DC regulating valve 3 17, flow transmitter 3 18 and shut-off valve 3 19 via pipelines. One end of shut-off valve 3 19 is connected to waste steam tank 20 via pipelines. Waste steam tank 20 is connected to condensate interface 21 and vaporization tank 22 via pipelines. One end of vaporization tank 22 is connected to DC regulating valve 4 23 via pipelines. DC regulating valve 4 23, DC regulating valve 3 17, flow transmitter 3 18, flow transmitter 2 14 and DC regulating valve 15 are connected to proportional control valve 24 via pipelines.

[0029] Example 2:

[0030] like Figures 4-5 As shown, according to an embodiment of the present invention, an online adjustable exhaust steam recovery system is provided at one end of the online adjustable injector 1 via a pipeline, which is respectively equipped with an instrument 25, an instrument 26, and a pressure relief valve 27. The pressure relief valve 27 is connected to the instrument 26 via a pipeline. One end of the pressure relief valve 27 is connected to a shut-off valve 28 via a pipeline. The shut-off valve 28 and one end of the flow transmitter 7 are connected in sequence via a check valve 29 and a flow transmitter 30 via a pipeline. One end of the flow transmitter 30 is connected to a DC regulating valve 10 via a pipeline. Detection interfaces are provided at the connection points of the flow transmitter 30, the flow transmitter 18, the flow transmitter 14, the flow transmitter 7, and the pipeline.

[0031] The online adjustable injector 1 is equipped with a desuperheating water valve 31. The desuperheating water valve 31 is connected to the instrument 1 25 via a pipeline to a DC regulating valve 5 32. One end of the DC regulating valve 5 32 is connected to a shut-off valve 4 33 via a pipeline. One end of the shut-off valve 4 33 is connected to a buffer tank 34 via a pipeline. The buffer tank 34 is connected in sequence via a check valve 3 35, a shut-off valve 5 36, and a booster water pump 37 via pipelines. The booster water pump 37 is connected to three interfaces 38 via pipelines. One of the interfaces 38 is connected to an instrument 3 39 via a pipeline. One end of the instrument 3 39 is connected to the buffer tank 34 via a pipeline.

[0032] A shut-off valve 40 and a cooling water storage tank 41 are connected to one side of the booster water pump 37 via a pipeline. A DCS instrument 42 and a regulating valve 43 are connected to the cooling water storage tank 41 via multiple pipelines. The regulating valve 43 is connected to the DCS instrument 42 via a pipeline. One end of the regulating valve 43 is connected to a shut-off valve 44 via a pipeline. One end of the shut-off valve 44 is connected to an external cooling water interface 45 via a pipeline.

[0033] Check valve 29 and flow transmitter 40 are connected by pipes to shut-off valve 36, instrument 47 and DC regulating valve 6 48 respectively. One end of DC regulating valve 6 48 is connected to user interface 49 by pipe. Instrument 47 and DC regulating valve 6 48 are connected by pipes to automatic safety valve 50, ammonia stripping tank 51, MVR tank 52, old triple-effect tank 53, new triple-effect tank 54, regulating valve 2 55 and biological water tank 56 in sequence. Ammonia stripping tank 51, MVR tank 52, old triple-effect tank 53 and new triple-effect tank 54 are connected by pipes to condensate recovery interface 57.

[0034] Regulating Valve II 55, Automatic Safety Valve 50, DC Regulating Valve VI 48, Shut-off Valve III 46, Installed Instrument IV 47, Shut-off Valve VII 44, DCS Instrument 42, Regulating Valve I 43, Shut-off Valve VI 40, Installed Instrument III 39, Check Valve III 35, Shut-off Valve V 36, Booster Pump 37, Shut-off Valve IV 33, DC Regulating Valve V 32, Desuperheating Water Valve 31, Check Valve II 29, Flow Transmitter IV 30, Installed Instrument I 25, Installed Instrument II 26, Backup Pressure Valve 27, Proportional Control Valve 24, DC Regulating Valve IV 23. DC regulating valve 3; 17. Flow transmitter 3; 18. Shut-off valve 3; 19. Flow transmitter 2; 14. Shut-off valve 2; 15. Check valve 11; Shut-off valve 1; 12. Flow transmitter 1; 7. Shut-off valve 1; 8. DC regulating valve 1; 5. Check valve 1; 6. Electric telescopic rod 205; Online adjustable injector 1. In actual use, the electrical components are electrically connected to a controller (not shown in the diagram). The controller is a PLC programmable logic controller or a microcontroller. By writing a suitable control program, precise control of the electrically connected electrical components can be achieved.

[0035] 55. Regulating valve 2, 50. Automatic safety valve, 48. DC regulating valve 6, 46. Shut-off valve 3, 47. Installed instrument 4, 44. Shut-off valve 7, 42. DCS instrument, 43. Regulating valve 1, 40. Shut-off valve 6, 39. Installed instrument 3, 35. Check valve 3, 36. Shut-off valve 5, 37. Booster pump, 33. Shut-off valve 4, 32. DC regulating valve 5, 31. Desuperheating water valve, 29. Check valve 2, 30. Installed instrument 1, 26. Standby valve, 27. Proportional control valve, 24. DC regulating valve 4, 23. DC regulating valve 3, 17. Flow transmitter 3, 18. Shut-off valve 3, 19. Flow transmitter 2, 14. Shut-off valve 2, 15. Check valve, 11. Shut-off valve 1, 12. Flow transmitter 1, 7. Shut-off valve 1, 8. DC regulating valve 1, 5. Check valve 1, 205. Electric telescopic rod, 1. Online adjustable injector, controller is electrically connected to an external power supply;

[0036] Regulating valve 2 (55), Automatic safety valve (50), DC regulating valve 6 (48), Shut-off valve 3 (46), Installed instrument 4 (47), Shut-off valve 7 (44), DCS instrument (42), Regulating valve 1 (43), Shut-off valve 6 (40), Installed instrument 3 (39), Check valve 3 (35), Shut-off valve 5 (36), Booster pump (37), Shut-off valve 4 (33), DC regulating valve 5 (32), Desuperheating water valve (31), Check valve 2 (29), Flow transmitter 4 (30), Installed instrument 1 (25), Installed instrument 2 (26), Backup pressure valve (27). Proportional control valve 24, DC regulating valve four 23, DC regulating valve three 17, flow transmitter three 18, shut-off valve three 19, flow transmitter two 14, shut-off valve two 15, check valve 11, shut-off valve one 12, flow transmitter one 7, shut-off valve one 8, DC regulating valve one 5, check valve one 6, electric telescopic rod 205, online adjustable injector 1. The controller is existing technology and will not be described in detail. The specific model and specifications need to be selected and determined according to the actual specifications of the device.

[0037] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0038] In summary, with the help of the above-mentioned technical solution of this utility model, when in use, the exhaust steam first enters the online adjustable injector 1, and then flows into the auxiliary cylinder 201 connected to the injector connection end. In the auxiliary cylinder 201, the solid particles and impurities in the exhaust steam are intercepted by the filter screen plate 202, and the harmful gases, odors and some dissolved impurities in the exhaust steam are adsorbed by the activated carbon plate 203, so as to achieve efficient purification. At the same time, the auxiliary cleaning plate 204, driven by the electric telescopic rod 205, automatically cleans the surface of the filter screen plate 202 at regular intervals. The impurities that are cleaned off fall into the collection box 4 in the collection frame 3 installed on the surface of the auxiliary cylinder 201 for centralized treatment. This process ensures the long-term stable operation of the filtration structure and reduces manual maintenance.

[0039] The purified exhaust steam enters different pipeline branches from the outlets of the three auxiliary cylinders 201:

[0040] First route (medium pressure branch): Through the pipeline, DC regulating valve 15 → flow transmitter 24 → shut-off valve 25, and finally delivered to the external medium pressure gas interface 16. Flow transmitter 24 monitors the flow of this route.

[0041] The second route (instrument branch): It is delivered to the external instrument air pressure interface 9 via the pipeline through the flow transmitter 7 → shut-off valve 8. The flow transmitter 7 monitors the flow of this route.

[0042] The third route (low-pressure / heat recovery branch): The steam is delivered to the external low-pressure interface 13 via pipeline through flow transmitter 7 (shared with the instrument branch) → DC regulating valve 10 → check valve 11 → shut-off valve 12. This route is also the starting point for the heat recovery and user end. Then, it is connected to the exhaust steam drawn from the outlet of the auxiliary cylinder 201 of the first medium-pressure branch, and enters the exhaust steam tank 20 via pipeline through DC regulating valve 17 → flow transmitter 18 → shut-off valve 19.

[0043] Meanwhile, preliminary gas-liquid separation is carried out in the exhaust steam tank 20. The separated condensate is recovered through the condensate inlet 21, and the remaining steam enters the vaporization tank 22 for further vaporization treatment. The steam coming out of the vaporization tank 22 is regulated through the pipeline via the DC regulating valve 23.

[0044] The proportional control valve 24 is connected to and receives signals or fluid from DC regulating valve 4 23, DC regulating valve 3 17, flow transmitter 3 18, flow transmitter 2 14, and DC regulating valve 1 5 through a pipeline, so as to achieve more precise pressure or flow control.

[0045] The desuperheating water valve 31 is installed on the online adjustable injector 1 to control the flow rate of the desuperheating water. The desuperheating water enters the buffer tank 34 through the pipeline via the instrument 1 25 → DC regulating valve 5 32 → shut-off valve 4 33. The water in the buffer tank 34 is pressurized through the pipeline via the check valve 3 35 → shut-off valve 5 36 → booster pump 37. The pressurized water is distributed to the required parts of the system through multiple interfaces 38 on the booster pump 37. One of the interfaces 38 is connected to the instrument 3 39 through a pipeline back to the buffer tank 34, which may be used for monitoring or circulation.

[0046] Meanwhile, the cooling water storage tank 41 is connected to the booster pump 37 via a pipeline through the shut-off valve 6 40. The cooling water is supplied to the parts of the system that need cooling through the pipeline via the regulating valve 1 43 → shut-off valve 7 44.

[0047] On the pipeline between check valve 29 and flow transmitter 40, this section of pipeline is also connected from flow transmitter 17 and shut-off valve 28: shut-off valve 346 → instrument 47 → DC regulating valve 648 → DC regulating valve 648 outlet is connected to user interface 49 through pipeline to supply purified and regulated exhaust steam to the user. On the pipeline between instrument 47 and DC regulating valve 648, it automatically opens to relieve pressure when the system is overpressured to ensure safety.

[0048] Then, the exhaust steam passes through the ammonia stripping tank 51 → MVR tank 52 → old triple-effect tank 53 → new triple-effect tank 54, where it is recycled and reused in stages to fully extract heat energy. Meanwhile, regulating valve 2 55 regulates the flow / pressure entering the final unit. The biological water tank 56 is a unit for recycling or treatment. The condensate generated by the ammonia stripping tank 51, MVR tank 52, old triple-effect tank 53, and new triple-effect tank 54 is centrally recycled and reused through the condensate recovery interface 57.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An online adjustable waste steam recovery system, characterized in that, The device includes an online adjustable injector (1), an auxiliary component (2) is provided on the online adjustable injector (1), the auxiliary component (2) includes an auxiliary cylinder (201) provided on multiple connecting ends of the online adjustable injector (1) by bolts, a filter screen plate (202) and an activated carbon plate (203) are provided on the inner wall of the auxiliary cylinder (201), an auxiliary groove is provided on the auxiliary cylinder (201), an auxiliary cleaning plate (204) is provided on the inner wall of the auxiliary groove, an electric telescopic rod (205) is provided on one side of the auxiliary cleaning plate (204), an auxiliary frame (206) is provided at one end of the electric telescopic rod (205), and one end of the auxiliary frame (206) is connected to the surface of the auxiliary cylinder (201).

2. The online adjustable waste steam recovery system according to claim 1, characterized in that, The surface of the auxiliary cylinder (201) is provided with a collection frame (3), and an installation groove is provided on the collection frame (3). A collection box (4) is installed on the inner wall of the installation groove.

3. The online adjustable waste steam recovery system according to claim 2, characterized in that, Two of the auxiliary cylinders (201) are connected to a DC regulating valve (5) and a check valve (6) respectively via pipes. The other auxiliary cylinder (201) is connected to a flow transmitter (7) and a shut-off valve (8) respectively via pipes. One end of the shut-off valve (8) is connected to an external instrument air pressure interface (9) via a pipe. One end of the flow transmitter (7) is connected to a DC regulating valve (10) via a pipe. One end of the DC regulating valve (10) is connected to a check valve (11), a shut-off valve (12) and an external low-pressure interface (13) via pipes.

4. The online adjustable waste steam recovery system according to claim 3, characterized in that, One end of DC regulating valve 1 (5) is connected to flow transmitter 2 (14), stop valve 2 (15) and external medium-pressure gas interface (16) in sequence through a pipeline. One end of check valve 1 (6) is connected to DC regulating valve 3 (17), flow transmitter 3 (18) and stop valve 3 (19) in sequence through a pipeline. One end of stop valve 3 (19) is connected to waste steam tank (20) through a pipeline. Waste steam tank (20) is connected to condensate interface (21) and vaporization tank (22) through a pipeline. One end of vaporization tank (22) is connected to DC regulating valve 4 (23) through a pipeline. DC regulating valve 4 (23), DC regulating valve 3 (17), flow transmitter 3 (18), flow transmitter 2 (14) and DC regulating valve 1 (5) are connected to proportional control valve (24) through a pipeline.

5. The online adjustable waste steam recovery system according to claim 4, characterized in that, One end of the online adjustable injector (1) is equipped with an instrument 1 (25), an instrument 2 (26), and a pressure relief valve (27) respectively through a pipeline. The pressure relief valve (27) is connected to the instrument 2 (26) through a pipeline. One end of the pressure relief valve (27) is connected to a shut-off valve 2 (28) through a pipeline. The shut-off valve 2 (28) and one end of the flow transmitter 1 (7) are connected in sequence to a check valve 2 (29) and a flow transmitter 4 (30) through a pipeline. One end of the flow transmitter 4 (30) is connected to a DC regulating valve 2 (10) through a pipeline.

6. The online adjustable waste steam recovery system according to claim 5, characterized in that, The online adjustable injector (1) is equipped with a desuperheating water valve (31). The desuperheating water valve (31) and the instrument installation one (25) are connected by a DC regulating valve five (32) through a pipe. One end of the DC regulating valve five (32) is connected by a shut-off valve four (33) through a pipe. One end of the shut-off valve four (33) is connected by a buffer tank (34) through a pipe. The buffer tank (34) is connected by a check valve three (35), a shut-off valve five (36), and a booster water pump (37) in sequence through pipes. The booster water pump (37) is connected by multiple interfaces (38) through pipes. One of the interfaces (38) is connected by an instrument installation three (39) through a pipe. One end of the instrument installation three (39) is connected to the buffer tank (34) through a pipe.

7. The online adjustable waste steam recovery system according to claim 6, characterized in that, The booster pump (37) is connected to a stop valve six (40) and a cooling water storage tank (41) via a pipe. The cooling water storage tank (41) is connected to a DCS instrument (42) and a regulating valve one (43) via multiple pipes. The regulating valve one (43) is connected to the DCS instrument (42) via a pipe. One end of the regulating valve one (43) is connected to a stop valve seven (44) via a pipe. One end of the stop valve seven (44) is connected to an external cooling water interface (45) via a pipe.

8. The online adjustable waste steam recovery system according to claim 7, characterized in that, Check valve 2 (29) and flow transmitter 4 (30) are connected by pipes to shut-off valve 3 (46), instrument 4 (47) and DC regulating valve 6 (48). One end of DC regulating valve 6 (48) is connected to user interface (49) by pipe. Instrument 4 (47) and DC regulating valve 6 (48) are connected by pipes to automatic safety valve (50), ammonia stripping tank (51), MVR tank (52), old triple-effect tank (53), new triple-effect tank (54), regulating valve 2 (55) and biochemical water tank (56). Ammonia stripping tank (51), MVR tank (52), old triple-effect tank (53) and new triple-effect tank (54) are connected by pipes to condensate recovery interface (57).

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