Energy-saving system and method for heating pipelines using condensate

Abstract

The invention discloses an energy-saving system for pipeline heating using condensate, comprising a condensate collection unit, a condensate distribution unit, a condensate control unit, a condensate recovery unit, a condensate heating unit and a condensate output unit. The condensate collection unit comprises a condensate tank, which collects condensate, and the condensate tank is connected to a first condensate distribution component and a second condensate distribution component through a pipeline. The steam condensate is collected by the first condensate distribution component and the second condensate distribution component and flows through a condensate main pipe. A part of the condensate in the condensate main pipe enters the condensate output unit and is connected by a first control component, and another part of the condensate enters the condensate recovery unit, which is connected to the condensate refining unit. The pipeline heating energy-saving system recovers the waste heat of steam condensate at about 90°C as a heat source for heating material pipelines with a freezing point of about 0°C, replacing high-cost and high-energy-consuming electric heating and steam heating, thereby achieving the purpose of energy saving and consumption reduction.

Description

Technical Field

[0001] The invention relates to a process pipeline heating condensate recovery technology, and in particular to an energy-saving system and method for pipeline heating using condensate. Background Art

[0002] Electric heating uses the energy of electric heating to supplement the heat lost by the heated body in the process flow, thereby maintaining the most reasonable process temperature of the flowing medium. According to calculations, the engineering cost required to use electric heating to provide heat to material pipelines that are prone to freezing in winter is high, and annual operation and maintenance costs are required. At the same time, electric heating is not safe in explosive environments. The engineering costs of steam heating and hot water heating are relatively low, such as a process pipeline heating condensate increase device proposed in patent number CN201621024952.8. Steam heating and hot water heating Under the dual-control environment of energy consumption, steam generated by coal combustion has become a scarce resource. The steam condensate generated in the chemical production device has a temperature of about 90°C. If the waste heat of the steam condensate is recycled and used as a heat source for pipeline heating, it will save energy consumption and reduce costs. As proposed in CN202011175067.0, due to the high temperature of steam condensate, pumping is prone to cavitation and pump corrosion. In addition, the discharge of low-pressure steam condensate in chemical plants is often disordered. In view of this, how to safely and stably recover the steam condensate as a heat source for pipeline heating is a problem we need to solve. Summary of the invention

[0003] In order to solve the defects of the above-mentioned prior art, the present invention proposes an energy-saving system and method for pipeline heating using condensate, which solves the problems caused by changing electric heating to steam condensate heating and creates a safe and stable operating environment.

[0004] The technical solution of the present invention is achieved in this way:

[0005] An energy-saving system for heating pipelines using condensate, characterized in that it comprises a condensate collection unit, a condensate distribution unit, a condensate control unit, a condensate recovery unit, a condensate heating unit and a condensate output unit.

[0006] The condensate collection unit includes a condensate tank, which collects condensate. The condensate distribution unit includes a first condensate distribution component and a second condensate distribution component. The condensate control unit includes a first control component, a second control component and a third control component. The condensate tank is connected to the first condensate distribution component and the second condensate distribution component through a pipeline. The steam condensate is collected by the first condensate distribution component and the second condensate distribution component and flows through the condensate main pipe. A part of the condensate in the condensate main pipe enters the condensate output unit and is connected by the first control component, and the other part of the condensate enters the condensate recovery unit. The condensate recovery unit is connected to the condensate refining unit, wherein,

[0007] A portion of the condensate outputted by the condensate output unit is connected to the condensate refining unit via the second control component, and another portion of the condensate outputted by the condensate output unit is connected to the condensate heating unit via the third control component. The condensate heating unit is connected to the condensate tank to avoid an imbalance in condensate supply and demand.

[0008] In the energy-saving system of the present invention that utilizes condensate for pipeline heating, the condensate tank is mainly composed of a condensate tank and a can, and the condensate tank is provided with a plurality of liquid inlets, which are connected to the steam condensate production station. The condensate tank is also provided with a liquid outlet and a recovery port, and the liquid outlet is connected to the condensate distribution unit.

[0009] In the energy-saving system of the present invention that uses condensate for pipeline heating, the first condensate distribution component includes a first steam condensate pump, one end of the first steam condensate pump is connected to a first reducer, the first reducer is connected to a first pressure gauge, the first pressure gauge is connected to a first check valve, the first check valve prevents condensate from flowing back, the first check valve is connected to the condensate main pipe via a first stop valve and a first gate valve, the first steam condensate pump is connected to a second reducer, and the second reducer is connected to the condensate tank via a second gate valve and a third gate valve.

[0010] In the energy-saving system of the present invention that uses condensate for pipeline heating, the condensate distribution unit divides the condensate into two streams, which are transported by the first condensate distribution component and the second condensate distribution component, and finally merged into one flow direction. When one group of condensate distribution components fails, the parameters of the other group of condensate distribution components can be adjusted to meet the transportation needs.

[0011] In the energy-saving system of the present invention that utilizes condensate for pipeline heating, the condensate recovery unit includes a condensate recovery component, and the condensate recovery component is mainly composed of a flow meter and a regulating valve. The flow meter is connected to the condensate main pipe, and the flow meter is connected to the seventh gate valve. The seventh gate valve is connected to the third stop valve, the regulating valve, the fourth stop valve and the eighth gate valve in sequence, and the eighth gate valve is connected to the tenth gate valve. The flow meter is also connected to the ninth gate valve, and the ninth gate valve is connected to the tenth gate valve, and the tenth gate valve is connected to the condensate refining unit.

[0012] In the energy-saving system of the present invention that uses condensate for pipeline heating, the flow meter monitors the condensate flow in the pipeline. When the condensate flow meets the setting, the condensate is sent to the condensate refining unit through the ninth gate valve and the tenth gate valve. When the condensate flow does not meet the setting, the condensate is sent to the condensate refining unit through the seventh gate valve to the tenth gate valve in sequence.

[0013] In the energy-saving system of the present invention that utilizes condensate for pipeline heating, the condensate heating unit includes a condensate heating assembly, and the condensate heating assembly is mainly composed of a steam-water mixer, and the steam-water mixer includes legs and a container tank, and the upper and lower ends of the container tank are respectively provided with a first connecting port and a second connecting port, and a valve plug is provided inside the container tank, and the valve plug is connected to an air inlet pipe, and low-pressure steam is passed through the air inlet pipe.

[0014] In the energy-saving system for pipeline heating using condensate of the present invention, the condensate refining unit deoxidizes and desalinates the steam condensate before introducing it into the boiler, thereby improving the utilization efficiency of water resources.

[0015] An energy-saving method for heating a pipeline using condensate, characterized in that it comprises the following steps:

[0016] Step 1: transport steam condensate at about 90°C from other chemical production stations to the condensate tank to recover the waste heat of the steam condensate and save the power consumption of electric heating;

[0017] Step 2: The steam condensate in the condensate tank is divided into two paths, the first path flows to the first condensate distribution component, and the second path flows to the second condensate distribution component. Finally, the two flows are combined to the condensate main pipe, and the combined steam condensate is redistributed and transported to each condensate branch pipe, and finally to each required condensate heating production position;

[0018] Step 3: After the waste heat contained in the steam condensate is exchanged at each required heating production station, it is collected and recovered to the return water main through each condensate branch pipe. In the return water main pipe, it is divided into two flows according to actual production needs. One flow is collected to the condensate tank through the condensate heating unit, and the other flow is sent to the condensate refining unit through the second control component for deoxygenation and desalination, and finally reaches the boiler for recycling as boiler feed water;

[0019] Step 4: If the storage volume of steam condensate in the condensate tank is greater than the total amount of condensate required by each required heating production position during production, the condensate collected by the condensate distribution unit needs to be separated into another stream and sent to the condensate refining unit;

[0020] Step 5: When the steam condensate from other production stations stops being transported, the low-pressure steam pipelines from other production stations are introduced into the condensate heating unit.

[0021] In the energy-saving method of the present invention for heating pipelines using condensate, step five is specifically as follows: the low-temperature steam condensate in the return water main enters the steam-water mixer through the third control component for heating, and at the same time, low-pressure steam from other production positions enters the steam-water mixer and serves as a heat source to heat the low-temperature steam condensate, and after being heated to the required temperature, it is merged into the condensate tank.

[0022] In the energy-saving method of utilizing condensate for pipeline heating of the present invention, when the steam condensate of other production stations stops being transported, the steam condensate is returned to the condensate tank again after condensate distribution, heat exchange, condensate recovery, and condensate heating, thus forming a closed-loop process for recycling.

[0023] The energy-saving system and method for pipeline heating using condensate of the present invention have the following beneficial effects: the pipeline heating energy-saving system recycles the waste heat of steam condensate at about 90°C as a heat source for heating material pipelines with a freezing point around 0°C, replacing high-cost and high-energy-consuming electric heating and steam heating, thereby achieving the purpose of energy saving and consumption reduction. At the same time, the present invention also transports steam condensate through the first condensate distribution component and the second condensate distribution component to create a safe and stable operating environment. The present invention is also provided with a condensate refining unit to deoxygenate and desalinate the condensate to improve the utilization efficiency of water resources. In the present invention, the steam condensate is reasonably diverted, and the steam condensate flow rate can be flexibly adjusted according to actual production needs to avoid an imbalance between the supply and demand of steam condensate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a process flow chart of the pipeline heat tracing energy-saving system of the present invention;

[0025] Figure 2 It is a structural flow chart of the pipeline heating energy-saving system of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the condensate distribution unit of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the condensate recovery unit of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the condensate heating unit of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the condensate tank of the present invention;

[0030] Figure 7 It is a structural schematic diagram of a soda mixer of the present invention;

[0031] Figure 8 It is a flow chart of the pipeline heating energy-saving method of the present invention;

[0032] The accompanying drawings are denoted by the following numerals: 10-condensate collection assembly, 101-steam condensate production station, 102-condensate tank, 11-condensate tank, 12-can, 13-liquid inlet, 14-liquid outlet, 15-recovery port, 20-first condensate distribution assembly, 201-first steam condensate pump, 202-first reducer, 203-first pressure gauge, 204-first check valve, 205-first stop valve, 206-first Gate valve, 207-second reducer, 208-second gate valve, 209-third gate valve, 30-second condensate distribution assembly, 301-second steam condensate pump, 302-third reducer, 303-second pressure gauge, 304-second check valve, 305-second stop valve, 306-fourth gate valve, 307-fourth reducer, 308-fifth gate valve, 309-sixth gate valve, 40-first control assembly, 50 - condensate recovery assembly, 501- flow meter, 502- seventh gate valve, 503- regulating valve, 504- eighth gate valve, 505- third stop valve, 506- fourth stop valve, 507- ninth gate valve, 508- tenth gate valve, 60- condensate heating assembly, 601- soda mixer, 61- leg, 62- container tank, 63- first connection port, 64- second connection port, 65- valve plug, 66- air inlet pipe, 602-the eleventh gate valve, 603-the twelfth gate valve, 604-the thirteenth gate valve, 605-the fourteenth gate valve, 606-the fifteenth gate valve, 607-the third check valve, 608-the fifth stop valve, 609-the sixteenth gate valve, 70-the second control assembly, 80-the third control assembly, 90-the condensate output assembly, 901-the station requiring condensate heating, 902-the recovery assembly gate valve, 903-the distribution assembly gate valve. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0034] Embodiment 1

[0035] like Figures 1 to 8 As shown, the energy-saving system for heating pipelines using condensate of the present invention comprises a condensate collection unit, a condensate distribution unit, a condensate control unit, a condensate recovery unit, a condensate heating unit and a condensate output unit.

[0036] The condensate collection unit includes a condensate collection component 10. The condensate collection component 10 consists of a plurality of steam condensate production positions 101 and a condensate tank 102. The plurality of steam condensate production positions 101 are connected to the condensate tank 102 as the required heat source for tracing. The condensate tank 102 is used to collect the condensate. The condensate distribution unit includes a first condensate distribution component 20 and a second condensate distribution component 30. The condensate tank 102 is connected to the first condensate distribution component 20 and the second condensate distribution component 30 through a pipeline. The steam condensate is collected by the first condensate distribution component 20 and the second condensate distribution component 30 and flows through the condensate main pipe. The condensate distribution unit is transported in two streams, which are transported by the first condensate distribution component 20 and the second condensate distribution component 30 and finally collected into one stream. When one group of condensate distribution components fails, the parameters of the other group of condensate distribution components can be adjusted in time to meet the transportation needs. A portion of the condensate in the condensate main pipe enters the condensate output unit, which includes a condensate output component 90, and the condensate output component 90 is connected to the condensate main pipe by the first control component 40; another portion of the condensate in the condensate main pipe enters the condensate recovery unit, and the condensate recovery unit is connected to the condensate refining unit, wherein the condensate recovery unit includes a condensate recovery component 50, and the condensate refining unit mainly deoxygenates and desalinates the steam condensate, and finally reaches the boiler for circulation as boiler feed water.

[0037] The condensate output component 90 includes a plurality of condensate-requiring heating stations 901. Each condensate-requiring heating station 901 is provided with a recovery component gate valve 902 and a distribution component gate valve 903. The recovery component gate valve 902 is used to control the steam condensate output from the condensate-requiring heating station 901, and the distribution component gate valve 903 is used to control the steam condensate input to the condensate-requiring heating station 901. A portion of the condensate output from the condensate-requiring heating station 901 is connected to the condensate refining unit via the second control component 70, and another portion of the condensate output from the condensate-requiring heating station 901 is connected to the condensate heating unit via the third control component 80, and the condensate heating unit is circulated with the condensate tank. The condensate heating unit is used to reheat the low-temperature condensate. Among them, the condensate in the condensate main pipe goes to each required heating production station one way, and the other way goes to the condensate refining unit. The low-temperature condensate output by the condensate heating station 901 is also divided into two paths. This distinction can flexibly adjust the flow rate of the condensate according to the actual needs of production to avoid an imbalance in the supply and demand of the condensate.

[0038] In this embodiment, if Figure 6 As shown, the condensate tank 102 is mainly composed of a condensate tank 11 and a can 12. The condensate tank 102 is provided with a plurality of liquid inlets 13, which are connected to the steam condensate production station 101. The condensate tank 102 is also provided with a liquid outlet 13 and a recovery port 14, which are connected to the condensate distribution unit and the recovery port 14 is connected to the condensate heating unit. Figure 3As shown, the first condensate distribution assembly 20 and the second condensate distribution assembly 30 have basically the same composition structure. The first condensate distribution assembly 20 includes a first steam condensate pump 201. One end of the first steam condensate pump 201 is connected to a first reducer 202, the first reducer 202 is connected to a first pressure gauge 203, the first pressure gauge 203 is connected to a first check valve 204, and the first check valve 204 is used to prevent the steam condensate pump from stopping due to sudden problems, thereby causing condensate backflow. The first check valve 204 is connected to the condensate main pipe through a first stop valve 205 and a first gate valve 206. The other end of the first steam condensate pump 201 is connected to a second reducer 207, and the second reducer 207 is connected to the condensate tank 102 through a second gate valve 208 and a third gate valve 209. The second condensate distribution assembly 30 includes a second steam condensate pump 301. One end of the second steam condensate pump 301 is connected in sequence to the third reducer 302, the second pressure gauge 303, the second check valve 304, the second stop valve 305 and the fourth gate valve 306, and the other end of the second steam condensate pump 301 is connected in sequence to the fourth reducer 307, the fifth gate valve 308 and the sixth gate valve 309. The sixth gate valve 309 is connected to the condensate tank 102, and the fourth gate valve 306 is connected to the condensate main pipe.

[0039] In this embodiment, the specific working principle of the condensate distribution unit is as follows: the condensate distribution unit divides the condensate into two streams, the first stream is delivered to the first steam condensate pump 201 through the second gate valve 208, the third gate valve 209 and the second reducer 207, and then delivered to the first pressure gauge 203 through the first reducer 202, and its fluid pressure is detected and calculated to see whether it meets the requirements of being delivered to each required heating production position and the condensate delivery main pipe, and then it is collected to the condensate main pipe through the first check valve 204, the first stop valve 205 and the first gate valve 206. The second stream is the same as the first stream, and the two streams are finally collected to the condensate main pipe, and part of the collected steam condensate is redistributed and delivered to each required condensate heating production position, and the other part is delivered to the condensate recovery unit.

[0040] like Figure 4 As shown, the condensate recovery unit includes a condensate recovery component 50, which is mainly composed of a flow meter 501 and a regulating valve 503. The flow meter 501 is connected to the condensate main pipe, and the flow meter 501 is connected to the seventh gate valve 502. The seventh gate valve 502 is connected to the third stop valve 505, the regulating valve 503, the fourth stop valve 506 and the eighth gate valve 504 in sequence, and the eighth gate valve 504 is also connected to the tenth gate valve 508. The flow meter 501 is also connected to the ninth gate valve 507, and the ninth gate valve 507 is connected to the tenth gate valve 508. The tenth gate valve 508 is connected to the condensate refining unit.

[0041] In this embodiment, the working principle of the condensate recovery unit and the condensate refining unit is implemented as follows: in actual production, if the storage amount of steam condensate in the condensate tank is greater than the total amount of condensate required by each required heating production position. The flow meter 501 monitors the condensate flow in the pipeline. When the condensate flow meets the setting, the condensate is sent to the condensate refining unit through the ninth gate valve 507 and the tenth gate valve 508; when the condensate flow does not meet the setting, the condensate is sent to the condensate refining unit through the seventh gate valve 502, the third stop valve 505, the regulating valve 503, the fourth stop valve 506, the eighth gate valve 504 to the tenth gate valve 508 in sequence. The condensate is transported to the condensate refining unit for deoxygenation and desalination, and finally reaches the boiler for recycling as boiler feed water.

[0042] Embodiment 2

[0043] This embodiment includes all the contents of the above embodiments. After the waste heat contained in the steam condensate is exchanged at each required heating production station, the steam condensate needs to be recycled and reused to form a closed-loop process for recycling, which does not require replenishment from other production stations. A portion of the condensate output from the condensate heating station 901 is connected to the condensate refining unit via the second control component 70, and part of the condensate is deoxygenated and desalted and recycled as boiler feed water. Another portion of the condensate output from the condensate heating station 901 is connected to the condensate heating unit via the third control component 80, and the low-temperature condensate is heated in the condensate heating unit and then sent to the condensate tank 102 for recycling. Among them, in this embodiment, Figure 5 and Figure 7 As shown, the condensate heating unit includes a condensate heating assembly 60. The condensate heating assembly 60 includes a steam-water mixer 601, and an eleventh gate valve 602 is connected below the steam-water mixer 601. The eleventh gate valve 602 is connected to the condensate output assembly 90 via the third control assembly 80. A sixteenth gate valve 609 is connected above the steam-water mixer 601, and the sixteenth gate valve 609 is connected to the thirteenth gate valve 604. A twelfth gate valve 603 is provided between the eleventh gate valve 602 and the thirteenth gate valve 604. Figure 7 As shown, the soda mixer 601 includes a leg 61 and a container tank 62. The upper and lower ends of the container tank 62 are respectively provided with a first connection port 63 and a second connection port 64. A valve plug 65 is provided inside the container tank 62. The valve plug 65 is connected to an air inlet pipe 66, and low-pressure steam is introduced into the air inlet pipe 66. The first connection port 63 is connected to the eleventh gate valve 602, and the second connection port 64 is connected to the sixteenth gate valve 609. The air inlet pipe 66 is connected to the fifteenth gate valve 606, and the fifteenth gate valve 606 is connected to the third check valve 607, and the third check valve 607 is connected to the fifth stop valve 608, and the fifth stop valve 608 is connected to the fourteenth gate valve 605, wherein the low-pressure steam of other positions is introduced into the soda mixer 601 through the fourteenth gate valve 605.

[0044] In this embodiment, the working principle of the condensate heating unit is as follows: when the steam condensate of other production positions stops being transported, in order to ensure that the pipeline heating energy-saving system can operate normally, the low-pressure steam of other production positions is introduced into the steam-water mixer as a subsequent heating measure. Part of the low-temperature steam condensate of the condensate output assembly 90 enters the steam-water mixer 601 through the third control assembly 80 and the eleventh gate valve 602 for heating. At the same time, the low-pressure steam pipeline from other production positions enters the steam-water mixer through the fourteenth gate valve 605, the fifteenth gate valve 606, the third check valve 607, and the fifth stop valve 608 as a heat source to heat the low-temperature steam condensate. After being heated to the required temperature, it is collected in the condensate tank 102 through the sixteenth gate valve 609 and the thirteenth gate valve 604 for standby use.

[0045] In this embodiment, the energy-saving method of using condensate for pipeline heating of the present invention is mainly carried out according to the following steps: Step 1, transporting steam condensate at about 90°C from other chemical production positions to a condensate tank, recovering the waste heat of the steam condensate, and saving the power consumption of electric heating;

[0046] Step 2: The steam condensate in the condensate tank is divided into two paths, the first path flows to the first condensate distribution component, and the second path flows to the second condensate distribution component. Finally, the two flows are combined to the condensate main pipe, and the combined steam condensate is redistributed and transported to each condensate branch pipe, and finally to each required condensate heating production position;

[0047] Step 3: After the waste heat contained in the steam condensate is exchanged at each required heating production station, it is collected and recovered to the return water main through each condensate branch pipe. In the return water main pipe, it is divided into two flows according to actual production needs. One flow is collected to the condensate tank through the condensate heating unit, and the other flow is sent to the condensate refining unit through the second control component for deoxygenation and desalination, and finally reaches the boiler for recycling as boiler feed water;

[0048] Step 4: During production, if the storage amount of steam condensate in the condensate tank is greater than the total amount of condensate required by each required heating production position, the condensate collected by the condensate distribution unit needs to be separated into another flow direction and sent to the condensate refining unit. When the condensate flow rate meets the setting, the condensate is sent to the condensate refining unit through the ninth gate valve 507 and the tenth gate valve 508; when the condensate flow rate does not meet the setting, the condensate is sent to the condensate refining unit through the seventh gate valve 502, the third stop valve 505, the regulating valve 503, the fourth stop valve 506, and the eighth gate valve 504 to the tenth gate valve 508 in sequence;

[0049] Step five, when the steam condensate from other production positions stops being transported, the low-pressure steam pipelines from other production positions are introduced into the condensate heating unit, and the low-temperature steam condensate in the return water main enters the steam-water mixer through the third control component for heating. At the same time, the low-pressure steam from other production positions enters the steam-water mixer and serves as a heat source to heat the low-temperature steam condensate, which is then heated to the required temperature and then flows into the condensate tank.

[0050] In this embodiment, when the steam condensate of other production stations stops being transported, the steam condensate is returned to the condensate tank after condensate distribution, heat exchange, condensate recovery, and condensate heating, thus forming a closed-loop process for recycling. It does not need to be replenished by other production stations and can be recycled, replacing high-cost and high-energy-consuming electric heating and steam heating, thus achieving the purpose of energy saving and consumption reduction.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An energy-saving method for an energy-saving system using condensate for pipeline heating, characterized in that: The following steps are involved: Transport 90℃ steam condensate from other chemical production stations to the condensate tank to recover the waste heat of steam condensate and save electric heating power consumption; The steam condensate in the condensate tank is divided into two paths, the first path flows to the first condensate distribution component, and the second path flows to the second condensate distribution component. Finally, the two flows are combined to the condensate main pipe. The combined steam condensate is redistributed and transported to each condensate branch pipe, and finally to each required condensate heating production position; After the waste heat contained in the steam condensate is exchanged at each required heating production station, it is collected and recovered to the return water main through each condensate branch pipe. In the return water main pipe, it is divided into two flows according to actual production needs. One flow is collected to the condensate tank through the condensate heating unit, and the other flow is sent to the condensate refining unit through the second control component for deoxygenation and desalination, and finally reaches the boiler for use as boiler feed water circulation; During production, if the storage volume of steam condensate in the condensate tank is greater than the total amount of condensate required by each required heating production position, the condensate collected by the condensate distribution unit needs to be separated into another stream and sent to the condensate refining unit; When the steam condensate from other production stations stops being transported, the low-pressure steam pipelines from other production stations are introduced into the condensate heating unit. The energy-saving system includes a condensate collection unit, a condensate distribution unit, a condensate control unit, a condensate recovery unit, a condensate heating unit and a condensate output unit. The condensate collection unit includes a condensate tank, which collects condensate. The condensate distribution unit includes a first condensate distribution component and a second condensate distribution component. The condensate control unit includes a first control component, a second control component and a third control component. The condensate tank is connected to the first condensate distribution component and the second condensate distribution component through a pipeline. The steam condensate is collected by the first condensate distribution component and the second condensate distribution component and flows through the condensate main pipe. A part of the condensate in the condensate main pipe enters the condensate output unit and is connected by the first control component, and the other part of the condensate enters the condensate recovery unit. The condensate recovery unit is connected to the condensate refining unit, wherein, A portion of the condensate outputted by the condensate output unit is connected to the condensate refining unit via the second control component, and another portion of the condensate outputted by the condensate output unit is connected to the condensate heating unit via the third control component, and the condensate heating unit is connected to the condensate tank.

2. The energy saving method according to claim 1, characterized in that: The condensate tank is mainly composed of a condensate tank and a can. The condensate tank is provided with multiple liquid inlets, which are connected to the steam condensate production station. The condensate tank is also provided with a liquid outlet and a recovery port, and the liquid outlet is connected to the condensate distribution unit.

3. The energy-saving method according to claim 1 or 2, characterized in that: The first condensate distribution component includes a first steam condensate pump, one end of the first steam condensate pump is connected to a first reducer, the first reducer is connected to a first pressure gauge, the first pressure gauge is connected to a first check valve, the first check valve prevents condensate from flowing back, the first check valve is connected to a condensate main pipe via a first stop valve and a first gate valve, the first steam condensate pump is connected to a second reducer, and the second reducer is connected to the condensate tank via a second gate valve and a third gate valve.

4. The energy saving method according to claim 3, characterized in that: The condensate distribution unit divides the condensate into two streams, which are transported by the first condensate distribution component and the second condensate distribution component, and finally merged into one flow direction. When one set of condensate distribution components fails, the parameters of the other set of condensate distribution components can be adjusted to meet the transportation needs.

5. The energy saving method according to claim 1, characterized in that: The condensate recovery unit includes a condensate recovery component, which is mainly composed of a flow meter and a regulating valve. The flow meter is connected to the condensate main pipe, and the flow meter is connected to the seventh gate valve. The seventh gate valve is connected to the third stop valve, the regulating valve, the fourth stop valve and the eighth gate valve in sequence, and the eighth gate valve is connected to the tenth gate valve. The flow meter is also connected to the ninth gate valve, and the ninth gate valve is connected to the tenth gate valve. The tenth gate valve is connected to the condensate refining unit.

6. The energy saving method according to claim 5, characterized in that: The flow meter monitors the condensate flow in the pipeline. When the condensate flow meets the setting, the condensate is sent to the condensate refining unit through the ninth gate valve and the tenth gate valve. When the condensate flow does not meet the setting, the condensate is sent to the condensate refining unit through the seventh gate valve to the tenth gate valve in sequence.

7. The energy saving method according to claim 1, characterized in that: The condensate heating unit includes a condensate heating component, which is mainly composed of a steam-water mixer. The steam-water mixer includes a support leg and a container tank. The upper and lower ends of the container tank are respectively provided with a first connecting port and a second connecting port. A valve plug is provided inside the container tank, and the valve plug is connected to an air inlet pipe, through which low-pressure steam is introduced.

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