A hot tank heating venting steam condensing collection system
Patent Information
- Application Number
- CN202522120212.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-30
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-09-30
AI Technical Summary
用以解决现有热水槽无法有效回收冷凝水，且不利于平衡冷凝回收能耗问题
本系统中，热水槽在结构设计上，利用冷水罐对蒸汽排出的排气管进行冷却，实现冷凝回收蒸汽。冷水罐则由冷水进水管路进行降温，无需额外提供冷源。虽然冷水无法实现连续供给，但降温后的冷水罐能够循环利用。排气管在结构设计使蒸汽实现聚气后借助翅片管分散排出，翅片管可提升冷凝效果。该系统对冷水进水管路所能提供的冷源进行了合理利用，虽然无法高效冷凝回收，但资源得到合理利用，无需额外产生能耗，降低了蒸汽所致的水资源浪费。
Smart Images
Figure CN224787730U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of energy recovery and utilization in chemical production, and specifically relates to a hot water tank heating and venting steam condensation and collection system. Background Technology
[0002] In the production of PVC in the chemical industry, hot water tanks provide temperature support for key processes such as polymerization reaction and slurry preheating, but the current heating and steam treatment methods have prominent problems.
[0003] During heating, a large amount of steam is directly released into the air, which not only wastes energy but also greatly increases the humidity in and around the workshop. In cold seasons, high humidity can easily lead to fogging, interfering with production operations, affecting visibility, damaging electrical equipment, and increasing maintenance costs.
[0004] The collection of steam condensate is also inadequate. Despite its high temperature and good quality, which could have been used to replenish hot water tanks or dilute slurries, it is lost with the drainage, wasting water resources, increasing reliance on fresh water, and raising production costs.
[0005] In addition, the water temperature in the hot water tank during the PVC process needs to be maintained between 50 and 95°C, depending on the polymerization reaction requirements and rinsing process. The steam consumption and the cold water temperature adjustment process make the steam condensation volume unstable. If circulating cooling water is used directly to condense and discharge steam, energy consumption needs to be carefully balanced, otherwise it may easily lead to an increase in overall energy consumption.
[0006] In summary, the existing methods have serious problems in terms of energy waste, condensate collection, and energy balance, and there is an urgent need to develop a high-efficiency and energy-saving hot water tank heating and venting steam condensation collection system. Utility Model Content
[0007] The purpose of this invention is to provide a hot water tank heating and venting steam condensation collection system. This system aims to solve the problems of existing hot water tanks being unable to effectively recover condensate and being unfavorable for balancing the energy consumption of condensation recovery.
[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A hot water tank heating and venting steam condensation and collection system is disclosed. The system includes a hot water tank, a steam inlet pipe, a cold water inlet pipe, a steam exhaust pipe, and a condensate return pipe, all connected to the hot water tank. A condensation device is connected to both the steam exhaust pipe and the condensate return pipe. The cold water inlet pipe has two branch pipes, one of which is connected to the hot water tank, and the other branch pipe is spirally wound with the condensation device and then connected to the hot water tank.
[0009] Furthermore, the condensation device includes a cold water tank, an exhaust pipe that runs longitudinally through the cold water tank and is connected to the cold water tank, and another branch pipe that is wrapped around the outside of the cold water tank.
[0010] Furthermore, the exhaust pipe includes an air collecting pipe and multiple finned tubes disposed on the air collecting pipe.
[0011] Furthermore, the cold water tank is equipped with an inlet pipe and an outlet pipe.
[0012] Furthermore, the other branch pipe is provided with an insulation layer on its outer side.
[0013] Furthermore, each of the two branch pipes formed by the cold water inlet pipe is equipped with a first electrically controlled valve.
[0014] Furthermore, a second electrically controlled valve is installed on both the steam exhaust pipeline and the condensate return pipeline.
[0015] Compared with the prior art, the beneficial effects of this utility model are: In this system, the hot water tank is structurally designed to cool the exhaust pipe from the steam discharge, achieving steam condensation and recovery. The cold water tank is cooled by the cold water inlet pipe, eliminating the need for an additional cooling source. Although a continuous supply of cold water is not possible, the cooled water tank can be recycled. The exhaust pipe is structurally designed so that steam is concentrated and then dispersed through finned tubes, which enhance the condensation effect. This system makes efficient use of the cooling source provided by the cold water inlet pipe. Although efficient condensation and recovery are not possible, resources are utilized rationally, eliminating additional energy consumption and reducing water waste caused by steam. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the cooling water tank and exhaust pipe in this utility model.
[0017] Among them, 1-hot water tank; 2-steam inlet pipe; 3-cold water inlet pipe; 4-steam exhaust pipe; 5-condensate return pipe; 6-first electric control valve; 7-cold water tank; 8-second electric control valve; 9-exhaust pipe; 10-gas collection pipe; 11-finned tube. Detailed Implementation
[0018] The preferred embodiments of this utility model will be described below with reference to the accompanying drawings.
[0019] like Figure 1 and 2 As shown, the steam condensation and collection system for heating and venting the hot water tank 1 achieves efficient processing and energy recovery of steam during the heating process through the coordinated operation of its components. The system includes a hot water tank 1, a steam inlet pipe 2, a cold water inlet pipe 3, a steam exhaust pipe 4, a condensate return pipe 5, and a condensation device connected to both the steam exhaust pipe 4 and the condensate return pipe 5.
[0020] The top of the hot water tank 1 is equipped with a steam exhaust pipe 4 and a condensate return water pipe 5. Both pipes are equipped with a first electric control valve 6 to control the opening and closing of the corresponding pipes.
[0021] The cold water inlet pipe 3 leads into the hot water tank 1 to supply cold water to be heated, and also to regulate the water temperature during cooling. The cold water inlet pipe 3 is divided into two branch pipes. One branch pipe is directly connected to the hot water tank 1, and the other branch pipe is tightly spirally wound around the outside of the cold water tank 7 of the condenser, and then connected to the hot water tank 1; both branch pipes are equipped with a second electrically controlled valve 8, which can be selectively opened simultaneously or individually.
[0022] One end of the steam exhaust pipe 4 is connected to the hot water tank 1, and the other end is connected to the exhaust pipe 9 of the condenser. One end of the condensate return water pipe 5 is connected to the bottom of the cold water tank 7, and the other end leads to the condensate recovery point. It is used to transport the condensed water to a designated location for reuse in PVC production, such as for replenishing water to the hot water tank 1 or for slurry dilution.
[0023] The cold water tank 7 of the condenser is cooled by another branch pipe of the cold water inlet pipe 3. The cold water tank 7 is equipped with inlet and outlet ports for water replacement, and a vent pipe can regulate the internal and external pressure. When steam from the hot water tank 1 enters the exhaust pipe 9 through the steam exhaust pipe 4, the steam collecting pipe 10 of the exhaust pipe 9 collects the steam, causing it to be discharged through multiple finned tubes 11 on the collecting pipe 10. The multiple finned tubes 11 greatly expand the contact area between the tube body and the cold water inside the cold water tank 7. Because the cold water temperature inside the cold water tank 7 is low, the steam dissipates heat and cools down rapidly during its flow between the finned tubes 11, thus liquefying to form condensate. The condensate flows down the inner wall of the finned tubes 11 and the collecting pipe 10, dripping into the condensate return pipe 5, completing the steam condensation process.
[0024] The cold water inside the branch pipe wrapped around the outside of the cold water tank 7 absorbs the heat dissipated by the steam condensation in the cold water tank 7 during its flow, thus achieving cooling. The insulation layer installed on the outside of this branch pipe effectively reduces heat loss during transportation.
[0025] During system operation, the generated steam is discharged through exhaust pipe 9, which runs through and is fixed to cold water tank 7. The cold water tank 7 cools the exhaust pipe 9, achieving steam condensation and recovery. The water in the cold water tank 7 is cooled via cold water inlet pipe 3, effectively utilizing the cold source of the cold water inlet pipe 3. When the cold water tank 7 cannot achieve steam condensation and recovery, the steam is directly vented. Although this process results in steam waste, it avoids additional energy consumption, thus balancing energy consumption.
[0026] Through the above specific implementation methods, this system optimizes the heating and steam treatment of hot water tank 1 in the PVC production process, effectively solving problems such as energy waste, insufficient condensate collection, and unstable water temperature control, thereby improving production efficiency and product quality.
Claims
1. A hot water tank heating and venting steam condensation and collection system, characterized in that, It includes a hot water tank, a steam inlet pipe, a cold water inlet pipe, a steam exhaust pipe, a condensate return pipe, and a condensing device connected to both the steam exhaust pipe and the condensate return pipe. The cold water inlet pipe has two branches, one of which is connected to the hot water tank, and the other branch is spirally wound around the condensing device and then connected to the hot water tank.
2. The collection system as described in claim 1, characterized in that, The condensation device includes a cold water tank, an exhaust pipe that runs longitudinally through the cold water tank and is connected to the cold water tank, and another branch pipe that is wrapped around the outside of the cold water tank.
3. The collection system as described in claim 2, characterized in that, The exhaust pipe includes an air collecting pipe and multiple finned tubes disposed on the air collecting pipe.
4. The collection system as described in claim 2, characterized in that, The cold water tank is equipped with an inlet pipe and an outlet pipe.
5. The collection system as described in claim 2, characterized in that, The other branch pipe is equipped with an insulation layer on its outer side.
6. The collection system as described in claim 2, characterized in that, The two branch pipes formed by the cold water inlet pipe are each equipped with a first electrically controlled valve.
7. The collection system as described in claim 1, characterized in that, Both the steam exhaust pipeline and the condensate return pipeline are equipped with a second electrically controlled valve.