A steam supply system and method for a tire production plant

Abstract

The present invention relates to a steam supply system and method for a tire production plant, comprising an external steam pipeline, a steam ring network for vulcanization internal pressure, a steam ring network for vulcanization external pressure, a low-pressure steam utilization unit, a main plant temperature and humidity control unit, a bathing water unit, and a low-pressure steam unit for rubber refining. The present invention utilizes the characteristics of steam supply and the phenomenon of steam level degradation at the end of the steam pipeline. The steam condensate required for drainage at the end is reduced in pressure and supplied to a secondary steam system, achieving the goal of fully utilizing steam through degraded supplementation. The steam entering the larger system is fully utilized, and the condensate water after final recovery of heat value is fully utilized, achieving complete utilization and zero waste.

Description

Technical Field

[0001] The present invention relates to the technical field of steam supply, and in particular to a steam supply system and method for a tire production plant. Background Art

[0002] Tire manufacturers use a variety of steam pressure levels. The steam pressure required for tire vulcanization internal pressure generally reaches 1.65MPa, the steam pressure required for tire vulcanization external pressure generally reaches 0.8MPa, and the steam pressure required for processes such as calendering and nail room is generally 0.3MPa.

[0003] In the existing technology, the steam pressure systems used by different process units of tire manufacturing companies are all supplied independently. This operation mode has the following problems: the steam on the equipment is used instantaneously, and there is a problem of large fluctuations in usage. Therefore, the steam will have a long residence time in the pipeline and the steam heat loss is relatively large. In particular, severe heat loss is more likely to occur at the end. The steam temperature is too low and a large amount of discharge condensation occurs, resulting in serious waste of steam.

[0004] Chinese patent CN212082069U discloses a steam recovery energy-saving system suitable for tire factories. The vulcanizing unit is connected to a normal-pressure water tank and a condensate tank via normal-pressure hot water pipes. Drain pipes 1 and 2 are provided on the normal-pressure water tank and the condensate tank, respectively. Pumps 1 and 3 are provided on drain pipes 1 and 2, respectively. Pumps 1 and 3 are provided with water supply pipes. Both the normal-pressure water tank and the condensate tank are connected to a flash steam recovery unit via a flash steam delivery pipe. The condensate tank is provided with a high-temperature hot water pipe 1, which is provided with pump 2. Pump 2 is provided with a high-temperature hot water pipe 2. High-temperature hot water pipe 2 is connected to a heating and air-conditioning system and a warm-water lithium bromide chiller. These two systems are connected to the flash steam recovery unit via low-temperature hot water pipes. The steam recovery energy-saving system disclosed in this patent can effectively save energy, but it does not provide a steam control scheme for the internal and external pressures of tire vulcanization processes in the tire factory. Summary of the Invention

[0005] In order to solve the problems of excessively long steam pipelines and low steam utilization efficiency, the present invention provides a steam supply system and method for a tire production plant.

[0006] The tire production plant steam supply system provided by the present invention can reduce steam heat energy loss and circulate the steam at the end of the steam system, thereby improving the efficiency of steam use as a whole.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] The present invention provides a steam supply system for a tire production plant, comprising an external steam introduction pipe, a steam ring network for vulcanization internal pressure, a steam ring network for vulcanization external pressure, a low-pressure steam use unit, a main plant temperature and humidity control unit, a bathing water unit, and a low-pressure steam unit for rubber mixing.

[0009] The external steam pipe is directly introduced into the steam ring network for vulcanization internal pressure.

[0010] A total exhaust pipe for the internal pressure tail gas of the vulcanization is led out from the internal pressure steam ring network, and the total exhaust pipe for the internal pressure tail gas of the vulcanization is connected to the external pressure steam ring network of the vulcanization.

[0011] A total exhaust pipe for the sulfurization external pressure tail gas is drawn out from the sulfurization external pressure steam ring network, and the total exhaust pipe for the sulfurization external pressure tail gas is connected to the low-pressure steam use unit.

[0012] A first condensate water pipe is drawn out from the low-pressure steam using unit, and the first condensate water pipe is connected to the temperature and humidity control unit of the main plant.

[0013] A steam branch pipe is drawn out from the external steam pipe, and a condensate pipe of the first steam trap system is drawn out from the vulcanization external pressure steam ring network. The condensate pipe of the first steam trap system is mixed with the steam branch pipe and then enters the low-pressure steam unit for rubber mixing.

[0014] The second steam trap system condensate pipeline is drawn from the vulcanization external pressure steam ring network, and the second steam trap system condensate pipeline is connected to the temperature and humidity control unit of the main plant.

[0015] A second condensed water pipe is drawn from the temperature and humidity control unit of the main plant, and the second condensed water pipe is connected to the bathing water unit.

[0016] The rubber refining low-pressure steam unit leads to a third condensed water pipe, and the third condensed water pipe is connected to the bathing water unit.

[0017] Lead the drainage pipe from the bathing water unit.

[0018] In one embodiment of the present invention, the steam ring network for internal pressure vulcanization is an annular steam pipeline used for the internal pressure vulcanization process.

[0019] In one embodiment of the present invention, the steam ring network for external pressure vulcanization is an annular steam pipeline used for the external pressure vulcanization process.

[0020] In one embodiment of the present invention, the total exhaust pipe for sulfurized internal pressure tail gas is arranged at the far end of the steam inlet of the steam ring network for sulfurized internal pressure. Such arrangement can increase the fluidity of the steam in the total exhaust pipe for sulfurized internal pressure tail gas into the steam ring network for sulfurized external pressure.

[0021] In one embodiment of the present invention, the total exhaust pipe for sulfurized external pressure tail gas is arranged at the far end of the steam inlet of the steam ring network for sulfurized external pressure. Such arrangement can increase the fluidity of the steam in the total exhaust pipe for sulfurized external pressure tail gas into the low-pressure steam using unit.

[0022] In one embodiment of the present invention, the low-pressure steam using unit includes a steam pipe for steel wire rolling and a steam pipe for a nail room.

[0023] In one embodiment of the present invention, the main plant temperature and humidity control unit is a pipe used to control the temperature and humidity of the main plant.

[0024] In one embodiment of the present invention, the bathing water unit is a hot water pipe for bathing.

[0025] In one embodiment of the present invention, the low-pressure steam unit for rubber mixing is a low-pressure steam pipeline used in a rubber mixing process.

[0026] The present invention provides a method for supplying steam to a tire production plant, which is based on the tire production plant steam supply system and includes the following steps:

[0027] Step S1: an external steam pipe is directly introduced into the vulcanization internal pressure steam ring network to supply vulcanization internal pressure steam;

[0028] Step S2: A total exhaust pipe for the internal pressure vulcanization tail gas is drawn out from the internal pressure vulcanization steam ring network, and the total exhaust pipe for the internal pressure vulcanization tail gas is connected to the external pressure vulcanization steam ring network to supply the external pressure vulcanization steam;

[0029] Step S3: A total exhaust pipe for the sulfurization external pressure tail gas is drawn out from the sulfurization external pressure steam ring network, and the total exhaust pipe for the sulfurization external pressure tail gas is connected to a low-pressure steam using unit to supply low-pressure steam;

[0030] Step S4: A first condensate pipe is drawn from the low-pressure steam user unit, and the first condensate pipe is connected to the main plant temperature and humidity control unit. A second steam trap system condensate pipe is drawn from the vulcanization external pressure steam ring network, and the second steam trap system condensate pipe is connected to the main plant temperature and humidity control unit to supply water and steam to the main plant temperature and humidity control unit.

[0031] Step S5: Leading out a steam branch pipe from the external steam pipe, leading out a condensate pipe of the first steam trap system from the vulcanization external pressure steam ring network, the condensate pipe of the first steam trap system and the steam branch pipe are mixed and then enter the low-pressure steam unit for rubber mixing to supply low-pressure steam for rubber mixing;

[0032] Step S6: A second condensed water pipe is led out from the temperature and humidity control unit of the main plant, and the second condensed water pipe is connected to the bathing water unit. A third condensed water pipe is led out from the low-pressure steam unit for rubber mixing, and the third condensed water pipe is connected to the bathing water unit to supply water to the bathing water unit;

[0033] Step S7: A drainage pipe is drawn out from the bathing water unit, and the water in the drainage pipe is used to replenish the softened water.

[0034] In one embodiment of the present invention, the steam pressure in the steam pipe is 1.65 MPa.

[0035] In one embodiment of the present invention, the steam pressure in the total exhaust pipe of the sulfurized internal pressure tail gas is 1.6 MPa.

[0036] In one embodiment of the present invention, the steam pressure in the total exhaust pipe of the sulfurized external pressure tail gas is 0.6 MPa.

[0037] In one embodiment of the present invention, the steam pressure in the condensate pipeline of the second steam trap system is 0.2 MPa.

[0038] In one embodiment of the present invention, the steam pressure after the condensate pipeline of the first steam trap system and the steam branch pipe are mixed is 0.5 MPa.

[0039] In one embodiment of the present invention, the temperature of the condensed water in the first condensed water pipe is 90-100°C.

[0040] In one embodiment of the present invention, the temperature of the condensed water in the second condensed water pipe is 70-80°C.

[0041] In one embodiment of the present invention, the temperature of the condensed water in the third condensed water pipe is 80-90°C.

[0042] In one embodiment of the present invention, saturated steam with a vulcanization internal pressure of 1.65 MPa is used for tire vulcanization and shaping, and its usage accounts for 20% of the total steam usage; saturated steam with a vulcanization external pressure of 0.5 MPa is used for tire rubber heating, and its usage accounts for 60% of the total steam usage; the low-pressure steam unit for rubber mixing uses saturated steam of 0.2-0.4 MPa for rubber thermal softening, and its usage accounts for 15% of the total steam usage; the low-pressure steam unit uses saturated steam of 0.1-0.4 MPa for environmental heating, and its usage accounts for 5% of the total steam usage.

[0043] Traditional tire manufacturing plants use tiered steam systems, with long pipe runs resulting in significant heat loss. This leads to the need to discharge steam condensate at the end of the single-circuit system, which has cooled due to heat loss. Furthermore, at high-pressure steam points like those used for vulcanization and external pressure, steam usage is relatively low at the end. This results in excessively low temperatures at the end of the single-circuit steam supply system, necessitating extensive drainage to ensure adequate steam usage.

[0044] By adopting the system provided in the application, steam can be utilized in a graded manner, and part of the steam loss that was originally directly discharged can be utilized in the lower-level steam system. Steam can be used effectively and zero waste can be achieved in the steam system of the tire production plant.

[0045] Compared with the prior art, the advantages of the present invention are mainly reflected in the following aspects:

[0046] 1. The vulcanization internal pressure uses 1.65MPa steam. Each vulcanizer is used to shape the tire when the tire enters the furnace. The steam usage time is about 10 seconds. Therefore, there is a problem of temperature drop due to long-term residence in the pipeline, and condensed water needs to be discharged. Therefore, the internal pressure pipeline is formed into a ring network to reduce the residence time of the steam in the pipeline. The total exhaust pipe for the vulcanization internal pressure tail gas is arranged at the far end of the steam inlet of the vulcanization internal pressure steam ring network. This arrangement can increase the flowability of the steam in the total exhaust pipe for the vulcanization internal pressure tail gas into the vulcanization external pressure steam ring network, reduce the residence time of the vulcanization internal pressure steam in the pipeline, reduce the heat energy loss of the steam in the pipeline, and reduce the discharge of condensed water.

[0047] 2. The steam usage for external pressure vulcanization accounts for 60% of the total steam usage in the plant, while the pressure of the condensed water discharged through the non-drainage system is about 0.16MPa. This condensed water can be recovered and pressurized and used in the low-pressure steam unit for rubber mixing and the temperature and humidity control unit of the main plant, which can replace most of the steam usage. This part can save steam at about 15-18% of the total steam volume.

[0048] 3. The temperature of condensed water after use in the low-pressure steam unit for rubber refining and the temperature and humidity control unit in the main plant is around 70-90 degrees. This part of the condensed water is used for heat exchange or replenishment in the bathing water unit, which can replace the amount of steam used for steam heating bath water. The temperature of the hot water after heat exchange is expected to be around 50°C. Therefore, the water in the drainage pipe can be used to replenish softened water and add it to the softened water, which can replace part of the heat energy required for softened water heating.

[0049] The present invention utilizes the characteristics of steam supply and the phenomenon of steam level decline at the end of the steam pipeline, and reduces the pressure of the steam condensate that needs to be discharged through the drain at the end and supplies it to the next-level steam system, forming the goal of fully utilizing the steam by degradation and supplementation, and fully utilizing the condensate water after the calorific value of the steam entering the large system is finally recovered, so as to achieve full utilization and zero waste.

[0050] Therefore, the tire production plant steam supply system and supply method provided by the present invention can fully utilize the calorific value of steam, achieving "zero" waste in the tire enterprise steam system, and compared with the original steam utilization technology, the savings can reach between 15-20%. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 Schematic diagram of the steam supply system for a tire production plant. DETAILED DESCRIPTION

[0052] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0053] Example

[0054] refer to Figure 1 This embodiment provides a steam supply system for a tire production plant, including an external steam introduction pipe 1, a vulcanization internal pressure steam ring network 2, a vulcanization external pressure steam ring network 3, a low-pressure steam use unit 4, a main plant temperature and humidity control unit 5, a bathing water unit 6, and a low-pressure steam unit 7 for rubber mixing.

[0055] The external steam pipe 1 is directly introduced into the vulcanization internal pressure steam ring network 2,

[0056] From the vulcanization internal pressure steam ring network 2, a vulcanization internal pressure tail gas main exhaust pipe 21 is led out, and the vulcanization internal pressure tail gas main exhaust pipe 21 is connected to the vulcanization external pressure steam ring network 3.

[0057] A sulfurization external pressure tail gas main exhaust pipe 31 is led out from the sulfurization external pressure steam ring network 3, and the sulfurization external pressure tail gas main exhaust pipe 31 is connected to the low-pressure steam using unit 4.

[0058] A first condensed water pipe 41 is drawn out from the low-pressure steam using unit 4, and the first condensed water pipe 41 is connected to the main plant temperature and humidity control unit 5.

[0059] A steam branch pipe is drawn out from the external steam pipe 1, and a first steam trap system condensate pipe 32 is drawn out from the vulcanization external pressure steam ring network 3. The first steam trap system condensate pipe 32 is mixed with the steam branch pipe and then enters the rubber mixing low-pressure steam unit 7.

[0060] The second steam trap system condensate pipe 33 is led out from the vulcanization external pressure steam ring network 3, and the second steam trap system condensate pipe 33 is connected to the main plant temperature and humidity control unit 5.

[0061] A second condensed water pipe 51 is led out from the main plant temperature and humidity control unit 5, and the second condensed water pipe 51 is connected to the bathing water unit 6.

[0062] The rubber refining low-pressure steam unit 7 leads to a third condensed water pipe 71, and the third condensed water pipe 71 is connected to the bathing water unit 6.

[0063] A drainage pipe 61 is led out from the bath water unit 6 .

[0064] In this embodiment, the steam ring network for internal vulcanization pressure 2 is an annular steam pipeline for the internal vulcanization pressure process. The steam ring network for external vulcanization pressure 3 is an annular steam pipeline for the external vulcanization pressure process.

[0065] In this embodiment, the main exhaust pipe 21 for sulfurization internal pressure exhaust gas is arranged at the distal end of the steam inlet of the steam ring network 2 for sulfurization internal pressure. This arrangement can increase the flowability of the steam in the main exhaust pipe 21 for sulfurization internal pressure exhaust gas into the steam ring network 3 for sulfurization external pressure. The main exhaust pipe 31 for sulfurization external pressure exhaust gas is arranged at the distal end of the steam inlet of the steam ring network 3 for sulfurization external pressure. This arrangement can increase the flowability of the steam in the main exhaust pipe 31 for sulfurization external pressure exhaust gas into the low-pressure steam utilization unit 4.

[0066] In this embodiment, the low-pressure steam using unit 4 includes a steam pipe for steel wire rolling and a steam pipe for the nail room.

[0067] In this embodiment, the main plant temperature and humidity control unit 5 is a pipeline used to control the temperature and humidity of the main plant.

[0068] In this embodiment, the bathing water unit 6 is a hot water pipe for bathing.

[0069] In this embodiment, the rubber refining low-pressure steam unit 7 is a low-pressure steam pipeline used in the rubber refining process.

[0070] This embodiment further provides a method for supplying steam to a tire production plant, which is based on the tire production plant steam supply system and includes the following steps:

[0071] Step S1: The external steam pipe 1 is directly introduced into the vulcanization internal pressure steam ring network 2 to supply the vulcanization internal pressure steam;

[0072] Step S2: Leading out a vulcanization internal pressure tail gas main exhaust pipe 21 from the vulcanization internal pressure steam ring network 2, and connecting the vulcanization internal pressure tail gas main exhaust pipe 21 to the vulcanization external pressure steam ring network 3 to supply vulcanization external pressure steam;

[0073] Step S3: A vulcanization external pressure tail gas main exhaust pipe 31 is led out from the vulcanization external pressure steam ring network 3, and the vulcanization external pressure tail gas main exhaust pipe 31 is connected to the low-pressure steam using unit 4 to supply low-pressure steam;

[0074] Step S4: A first condensate pipe 41 is led out from the low-pressure steam using unit 4. The first condensate pipe 41 is connected to the main plant temperature and humidity control unit 5. A second steam trap system condensate pipe 33 is led out from the vulcanization external pressure steam ring network 3. The second steam trap system condensate pipe 33 is connected to the main plant temperature and humidity control unit 5 to supply water and steam to the main plant temperature and humidity control unit.

[0075] Step S5: A steam branch pipe is drawn out from the external steam introduction pipe 1, and a first steam trap system condensate pipe 32 is drawn out from the vulcanization external pressure steam ring network 3. The first steam trap system condensate pipe 32 and the steam branch pipe are mixed and then enter the low-pressure steam unit 7 for rubber mixing to supply low-pressure steam for rubber mixing;

[0076] Step S6: A second condensed water pipe 51 is led out from the main plant temperature and humidity control unit 5, and the second condensed water pipe 51 is connected to the bathing water unit 6. The rubber mixing low-pressure steam unit 7 leads out a third condensed water pipe 71, and the third condensed water pipe 71 is connected to the bathing water unit 6 to supply water to the bathing water unit 6;

[0077] Step S7: A drainage pipe 61 is drawn out from the bathing water unit 6, and the water in the drainage pipe 61 is used to replenish the softened water.

[0078] In this embodiment, the steam pressure in the steam pipe 1 is 1.65 MPa. The steam pressure in the sulfurized internal pressure exhaust gas main exhaust pipe 21 is 1.6 MPa. The steam pressure in the sulfurized external pressure exhaust gas main exhaust pipe 31 is 0.6 MPa. The steam pressure in the second steam trap system condensate water pipeline 33 is 0.2 MPa. The steam pressure after mixing with the steam branch pipe in the first steam trap system condensate water pipeline 32 is 0.5 MPa. The condensate temperature in the first condensate water pipeline 41 is 90-100°C. The condensate temperature in the second condensate water pipeline 51 is 70-80°C. The condensate temperature in the third condensate water pipeline 71 is 80-90°C.

[0079] In this embodiment, saturated steam with a vulcanization internal pressure of 1.65 MPa is used for tire vulcanization and shaping, and its usage accounts for 20% of the total steam usage; saturated steam with a vulcanization external pressure of 0.5 MPa is used for tire rubber heating, and its usage accounts for 60% of the total steam usage; the low-pressure steam unit 7 for rubber mixing uses saturated steam of 0.2-0.4 MPa for rubber thermal softening, and its usage accounts for 15% of the total steam usage; the low-pressure steam unit 4 uses saturated steam of 0.1-0.4 MPa for environmental heating, and its usage accounts for 5% of the total steam usage.

[0080] The above description of the embodiments is intended to facilitate understanding and use of the invention by those skilled in the art. It will be apparent that those skilled in the art can readily make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the present invention is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention, without departing from the scope of the present invention, should be within the scope of protection of the present invention.

Claims

1. A steam supply system for a tire production plant, characterized in that: It includes an external steam introduction pipe (1), a steam ring network for vulcanization internal pressure (2), a steam ring network for vulcanization external pressure (3), a low-pressure steam use unit (4), a main plant temperature and humidity control unit (5), a bathing water unit (6) and a low-pressure steam unit for rubber refining (7). The external steam introduction pipe (1) is directly introduced into the vulcanization internal pressure steam ring network (2), A vulcanization internal pressure tail gas main exhaust pipe (21) is led out from the vulcanization internal pressure steam ring network (2), and the vulcanization internal pressure tail gas main exhaust pipe (21) is connected to the vulcanization external pressure steam ring network (3). A vulcanization external pressure tail gas main exhaust pipe (31) is led out from the vulcanization external pressure steam ring network (3), and the vulcanization external pressure tail gas main exhaust pipe (31) is connected to the low-pressure steam using unit (4). A first condensed water pipe (41) is led out from the low-pressure steam using unit (4), and the first condensed water pipe (41) is connected to the main plant temperature and humidity control unit (5). A steam branch pipe is led out from the external steam introduction pipe (1), and a first steam trap system condensate pipe (32) is led out from the vulcanization external pressure steam ring network (3). The first steam trap system condensate pipe (32) is mixed with the steam branch pipe and then enters the low-pressure steam unit (7) for rubber mixing. A second steam trap system condensate pipe (33) is drawn from the vulcanization external pressure steam ring network (3), and the second steam trap system condensate pipe (33) is connected to the main plant temperature and humidity control unit (5). A second condensed water pipe (51) is led out from the main plant temperature and humidity control unit (5), and the second condensed water pipe (51) is connected to the bathing water unit (6). The rubber refining low-pressure steam unit (7) leads to a third condensed water pipe (71), and the third condensed water pipe (71) is connected to the bathing water unit (6). A drainage pipe (61) is led out from the bathing water unit (6); The steam ring network for internal vulcanization pressure (2) is an annular steam pipeline used in the internal vulcanization pressure process; the steam ring network for external vulcanization pressure (3) is an annular steam pipeline used in the external vulcanization pressure process.

2. A tire production plant steam supply system according to claim 1, characterized in that: The total exhaust pipe (21) for sulfurized internal pressure tail gas is arranged at the far end of the steam inlet of the steam ring network (2) for sulfurized internal pressure; and the total exhaust pipe (31) for sulfurized external pressure tail gas is arranged at the far end of the steam inlet of the steam ring network (3) for sulfurized external pressure.

3. The tire production plant steam supply system according to claim 1, characterized in that: The low-pressure steam using unit (4) comprises a steam pipe for steel wire rolling and a steam pipe for the nail room.

4. The tire production plant steam supply system according to claim 1, characterized in that: The main factory building temperature and humidity control unit (5) is a pipeline used to control the temperature and humidity of the main factory building.

5. The tire production plant steam supply system according to claim 1, characterized in that: The bathing water unit (6) is a hot water pipe used for bathing; The rubber refining low-pressure steam unit (7) is a low-pressure steam pipeline used in the rubber refining process.

6. A method for supplying steam to a tire production plant, characterized in that: The method is based on the tire production plant steam supply system according to any one of claims 1 to 3, comprising the following steps: Step S1: an external steam pipe (1) is directly introduced into the steam ring network (2) for vulcanization internal pressure to supply vulcanization internal pressure steam; Step S2: a vulcanization internal pressure tail gas main exhaust pipe (21) is drawn out from the vulcanization internal pressure steam ring network (2), and the vulcanization internal pressure tail gas main exhaust pipe (21) is connected to the vulcanization external pressure steam ring network (3) to supply vulcanization external pressure steam; Step S3: Leading out a vulcanization external pressure tail gas main exhaust pipe (31) from the vulcanization external pressure steam ring network (3), and connecting the vulcanization external pressure tail gas main exhaust pipe (31) to the low-pressure steam using unit (4) to supply low-pressure steam; Step S4: A first condensate pipe (41) is drawn from the low-pressure steam using unit (4), the first condensate pipe (41) is connected to the main plant temperature and humidity control unit (5), a second steam trap system condensate pipe (33) is drawn from the vulcanization external pressure steam ring network (3), the second steam trap system condensate pipe (33) is connected to the main plant temperature and humidity control unit (5), and water and steam are supplied to the main plant temperature and humidity control unit; Step S5: a steam branch pipe is led out from the external steam introduction pipe (1), and a first steam trap system condensate pipe (32) is led out from the vulcanization external pressure steam ring network (3); the first steam trap system condensate pipe (32) and the steam branch pipe are mixed and then enter the low-pressure steam unit (7) for rubber mixing to supply low-pressure steam for rubber mixing; Step S6: A second condensed water pipe (51) is drawn out from the main plant temperature and humidity control unit (5), the second condensed water pipe (51) is connected to the bathing water unit (6), the rubber mixing low-pressure steam unit (7) draws out a third condensed water pipe (71), the third condensed water pipe (71) is connected to the bathing water unit (6), and water is supplied to the bathing water unit (6); Step S7: A drainage pipe (61) is drawn out from the bathing water unit (6), and the water in the drainage pipe (61) is used to replenish the softened water.

7. The method for supplying steam to a tire production plant according to claim 6, characterized in that: The steam pressure in the steam pipe (1) is 1.65 MPa, the steam pressure in the sulfide internal pressure tail gas main exhaust pipe (21) is 1.6 MPa, the steam pressure in the sulfide external pressure tail gas main exhaust pipe (31) is 0.6 MPa, the steam pressure in the condensate pipe (33) of the second steam trap system is 0.2 MPa, and the steam pressure of the condensate pipe (32) of the first steam trap system after mixing with the steam branch pipe is 0.5 MPa.

8. The method for supplying steam to a tire production plant according to claim 6, characterized in that: The temperature of the condensed water in the first condensed water pipe (41) is 90-100°C, the temperature of the condensed water in the second condensed water pipe (51) is 70-80°C, and the temperature of the condensed water in the third condensed water pipe (71) is 80-90°C.

9. The method for supplying steam to a tire production plant according to claim 6, characterized in that: Saturated steam with a vulcanization internal pressure of 1.65 MPa is used for tire vulcanization and shaping, accounting for 20% of the total steam consumption; saturated steam with a vulcanization external pressure of 0.5 MPa is used for tire rubber heating, accounting for 60% of the total steam consumption; the low-pressure steam unit (7) for rubber refining uses saturated steam with a pressure of 0.2-0.4 MPa for rubber thermal softening, accounting for 15% of the total steam consumption; the low-pressure steam unit (4) uses saturated steam with a pressure of 0.1-0.4 MPa for environmental heating, accounting for 5% of the total steam consumption.

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