Steam condensate treatment and cyclic utilization device
The intelligent diversion and real-time monitoring system solved the problem of excessive steam condensate conductivity, achieved efficient and accurate control of steam condensate treatment, protected key equipment and improved energy utilization efficiency.
Patent Information
- Application Number
- CN202422531260.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-10-18
AI Technical Summary
The existing steam condensate treatment has the problem of excessive conductivity, which leads to equipment corrosion, reduced heat transfer efficiency and shortened mixed bed service life. In addition, traditional sampling and detection has lags and misjudgments.
The intelligent diversion and real-time monitoring system is adopted, combined with the integrated application of conductivity meters, thermometers and electric valves to achieve real-time monitoring of steam condensate and efficient heat recovery. Through automated control, condensate with excessive conductivity is prevented from entering downstream equipment and temperature control is optimized.
It improves the accuracy and timeliness of steam condensate treatment, protects key equipment, reduces maintenance costs, and improves energy utilization efficiency and production stability.
Smart Images
Figure CN223357428U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of industrial water treatment, and in particular relates to a steam condensate treatment and recycling device. Background Art
[0002] In the industrial process of steam condensate treatment and recycling, managing the water quality of steam condensate is crucial. As a vital resource in industrial production, the quality of steam condensate directly impacts the efficiency of subsequent equipment, maintenance costs, and the stability of the overall production process. However, in actual production processes, the water quality of steam condensate is often affected by various factors, leading to problems such as excessive conductivity.
[0003] Conductivity is a key indicator of steam condensate quality, reflecting the concentration and mobility of ions in the solution. Exceeding the recommended conductivity not only leads to scaling and corrosion in pipes, shortening equipment lifespan, but also reduces heat transfer efficiency, increasing energy consumption and operating costs. More seriously, high conductivity can directly impact the lifespan and service life of the mixed bed (mixed ion exchange column) after the steam condensate completes heat exchange within the system and enters downstream water treatment equipment. As a key component in water treatment equipment, the stability of the mixed bed's performance is directly linked to the efficiency and effectiveness of the entire treatment system.
[0004] In existing steam condensate treatment processes, although advanced water treatment processes are already implemented for steam boiler water and real-time testing is performed to ensure steam quality, the quality of condensate often changes after it forms during the heat exchange process. Traditionally, manual sampling is used to detect changes in the condensate's conductivity, but this method exhibits significant lag. If sampling and testing are not timely, or if the condensate's quality changes after sampling, production operations can be misjudged, resulting in condensate with excessive conductivity being sent to downstream water treatment equipment, potentially damaging critical equipment such as the mixed bed. Therefore, exploring more efficient and accurate methods for monitoring and treating steam condensate quality is crucial. Utility Model Content
[0005] In view of the above shortcomings in the existing technology, the purpose of the present invention is to provide a steam condensate treatment and recycling device, which effectively improves the overall stability of the steam condensate treatment system through real-time monitoring and intelligent diversion, efficient heat recovery, precise temperature control and other measures, extends the service life of key equipment such as mixed beds and heat exchangers, reduces maintenance costs and replacement frequency, and provides a strong guarantee for the company's continued production and economic benefits.
[0006] The utility model is realized by adopting the following technical solutions:
[0007] The steam condensate treatment and recycling device includes a steam condensate tank, the outlet of which is respectively connected to a circulation pipeline, a dewatering device pipeline and a dewatering wastewater treatment system pipeline; a conductivity meter is provided on the dewatering device pipeline; the outlet of the dewatering device pipeline is sequentially connected to a first heat exchanger, a second heat exchanger and a mixed bed; the tube-side outlet of the first heat exchanger is sequentially connected to a third heat exchanger and a deaerator through a pipeline; and the tube-side outlet of the third heat exchanger is connected to the inlet of the steam condensate tank through a pipeline.
[0008] The circulation pipeline, dewatering device pipeline and sewage treatment system pipeline are respectively provided with a circulation pipeline electric valve, a dewatering device pipeline electric valve and a sewage treatment system pipeline electric valve, and the dewatering device pipeline electric valve and the sewage treatment system pipeline electric valve are respectively electrically connected to the conductivity meter.
[0009] A condensate pump is provided on the outlet pipeline of the steam condensate tank.
[0010] The tube side of the second heat exchanger is connected with a circulating water pipeline, and a circulating water control valve is provided on the circulating water pipeline.
[0011] A thermometer is provided on the shell-side outlet pipeline of the second heat exchanger, and the circulating water control valve is electrically connected to the thermometer.
[0012] The tube side inlet of the third heat exchanger is connected with a steam pipeline, and a steam control valve is provided on the steam pipeline.
[0013] The outlet pipeline of the deaerator is provided with a temperature detection device, which is electrically connected to the steam control valve.
[0014] The steam condensate treatment and recycling device works as follows:
[0015] Steam condensate is first collected in a steam condensate tank and then pumped out by a condensate pump for subsequent processing. The condensate pump's outlet pipeline is divided into three routes. One route sends condensate through the dewatering unit pipeline to the mixed bed. In the dewatering unit pipeline, a conductivity meter continuously monitors the condensate's conductivity. When the conductivity meter detects that the condensate's conductivity is within the normal range, the dewatering unit pipeline's electric valve remains open, allowing the condensate to enter the mixed bed normally. If the conductivity meter detects that the condensate's conductivity exceeds the normal range, an interlock control mechanism is triggered. At this point, the dewatering unit pipeline's electric valve quickly closes, while the dewatering system pipeline's electric valve opens, directing unacceptable condensate to the wastewater treatment system for treatment.
[0016] During the treatment process, the high-temperature condensate (above 80°C) in the steam condensate tank is preheated by the first heat exchanger to the deaerator's feed desalted water. This step recovers some heat, reducing steam usage in the subsequent third heat exchanger and achieving efficient heat utilization. After the initial heat exchange, the condensate continues through the second heat exchanger for further treatment before entering the mixed bed. The condensate temperature is monitored by a thermometer at the shell-side outlet of the second heat exchanger. Based on the thermometer's feedback, the circulating water flow rate is adjusted via the circulating water control valve to ensure that the condensate entering the mixed bed remains within an appropriate temperature range.
[0017] After preheating in the first heat exchanger and secondary heat exchange in the third heat exchanger, the deionized water is fed into the deaerator. A temperature sensor at the deaerator outlet monitors the deionized water's temperature in real time. The steam control valve's opening is adjusted based on the sensor's feedback to ensure the deionized water's temperature remains stable within a preset range.
[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0019] (1) The steam condensate treatment and recycling device described in the present invention realizes intelligent control of the steam condensate treatment process through the integrated application of automated equipment such as electric valves, conductivity meters, and thermometers. It not only effectively prevents condensate with excessive conductivity from entering the downstream water treatment device and protects key equipment such as the mixed bed, but also significantly improves the accuracy and timeliness of water quality management. At the same time, it reduces the frequency and error of manual sampling and testing, reduces the labor intensity of operators, and improves work efficiency and safety.
[0020] (2) The steam condensate treatment and recycling device described in this utility model preheats the desalted water used to feed the deaerator through the first heat exchanger, which not only recovers the heat in the condensate but also reduces the amount of steam used in the subsequent third heat exchanger. This effective use of heat not only reduces energy consumption but also improves the energy efficiency of the entire system, conforming to the concept of green and sustainable industrial development. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic structural diagram of the steam condensate treatment and recycling device described in the present invention;
[0022] In the figure: 1. Steam condensate tank; 2. Circulation pipeline; 3. Dewatering device pipeline; 4. Dewatering system pipeline; 5. Conductivity meter; 6. First heat exchanger; 7. Second heat exchanger; 8. Mixed bed; 9. Third heat exchanger; 10. Deaerator; 11. Circulation pipeline electric valve; 12. Dewatering device pipeline electric valve; 13. Dewatering system pipeline electric valve; 14. Condensate pump; 15. Circulating water pipeline; 16. Circulating water control valve; 17. Thermometer; 18. Steam pipeline; 19. Steam control valve; 20. Temperature detection device. DETAILED DESCRIPTION
[0023] In order to make the purpose and technical solution of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings.
[0024] Example 1
[0025] like Figure 1 As shown, the steam condensate treatment and recycling device includes a steam condensate tank 1, the outlet of the steam condensate tank 1 is respectively connected to a circulation pipeline 2, a dewatering device pipeline 3 and a dewatering wastewater treatment system pipeline 4, the dewatering device pipeline 3 is provided with a conductivity meter 5, the outlet of the dewatering device pipeline 3 is sequentially connected to a first heat exchanger 6, a second heat exchanger 7 and a mixed bed 8, the tube-side outlet of the first heat exchanger 6 is sequentially connected to a third heat exchanger 9 and a deaerator 10 through pipelines, and the tube-side outlet of the third heat exchanger 9 is connected to the inlet of the steam condensate tank 1 through a pipeline.
[0026] The circulation pipeline 2, the dewatering device pipeline 3 and the dewatering treatment system pipeline 4 are respectively provided with a circulation pipeline electric valve 11, a dewatering device pipeline electric valve 12 and a dewatering treatment system pipeline electric valve 13. The dewatering device pipeline electric valve 12 and the dewatering treatment system pipeline electric valve 13 are respectively electrically connected to the conductivity meter 5.
[0027] A condensate pump 14 is provided on the outlet pipeline of the steam condensate tank 1 .
[0028] The tube side of the second heat exchanger 7 is connected to a circulating water pipeline 15 , and a circulating water control valve 16 is provided on the circulating water pipeline 15 .
[0029] A thermometer 17 is provided on the shell-side outlet pipeline of the second heat exchanger 7 , and the circulating water control valve 16 is electrically connected to the thermometer 17 .
[0030] The tube side inlet of the third heat exchanger 9 is connected to a steam pipeline 18 , and a steam control valve 19 is provided on the steam pipeline 18 .
[0031] A temperature detection device 20 is provided on the outlet pipeline of the deaerator 10 , and the temperature detection device 20 is electrically connected to the steam control valve 19 .
[0032] When working, the specific steps are as follows:
[0033] Steam condensate is first collected in the steam condensate tank 1. Subsequently, the condensate is pumped out by the condensate pump 14 and transported to the subsequent processing flow. The outlet pipeline of the condensate pump 14 is divided into three routes: one route passes through the circulation pipeline 2, which is equipped with a circulation pipeline electric valve 11 for recycling or standby use. One route passes through the dewatering device pipeline 3, which is equipped with a conductivity meter 5 and a dewatering device pipeline electric valve 12 for water quality treatment of the condensate. One route passes through the sewage treatment system pipeline 4, which is equipped with a sewage treatment system pipeline electric valve 13 for discharging unqualified condensate. The conductivity meter 5 continuously monitors the conductivity of the condensate on the dewatering device pipeline 3. When the conductivity is within the normal range, the dewatering device pipeline electric valve 12 remains open, allowing the condensate to enter the subsequent processing flow. If the conductivity exceeds the standard, the interlock control mechanism will be triggered, the dewatering device pipeline electric valve 12 will be quickly closed, and the sewage treatment system pipeline electric valve 13 will be opened at the same time to drain the unqualified condensate to the sewage treatment system.
[0034] Qualified condensate passes through the shell side of the first heat exchanger 6, preheating the desalted water entering through the tube side of the first heat exchanger 6 to recover heat. The preheated condensate then passes through the shell side of the second heat exchanger 7 for further processing. A thermometer 17 is installed on the shell side outlet pipe of the second heat exchanger 7 to monitor the condensate temperature. Based on the feedback from thermometer 17, the circulating water flow rate is adjusted via circulating water control valve 16 to ensure that the condensate temperature entering the mixed bed 8 remains within an appropriate range.
[0035] The desalted water is first preheated through the tube side of the first heat exchanger 6. The preheated desalted water is then passed through the tube side of the third heat exchanger 9 for secondary heat exchange to further increase its temperature. The inlet of the tube side of the third heat exchanger 9 is connected to a steam pipeline 18, and a steam control valve 19 is provided on the steam pipeline 18 to adjust the steam flow to control the heat exchange effect. The desalted water after heat exchange is sent to the deaerator 10 for deoxygenation treatment. A temperature detection device 20 is provided on the outlet pipeline of the deaerator 10 to monitor the temperature of the deoxygenated water in real time. Based on the feedback from the temperature detection device, the steam flow is adjusted in real time through the steam control valve 19 to ensure that the temperature of the deoxygenated water is stably maintained within the preset range. The condensate and deoxygenated water that meet the quality standards after treatment are recycled in industrial production to maximize the utilization of resources.
Claims
1. A steam condensate treatment and recycling device, characterized in that: The invention comprises a steam condensate tank (1), the outlet of the steam condensate tank (1) is respectively connected to a circulation pipeline (2), a dewatering device pipeline (3) and a dewatering wastewater treatment system pipeline (4), the dewatering device pipeline (3) is provided with a conductivity meter (5), the outlet of the dewatering device pipeline (3) is sequentially connected to a first heat exchanger (6), a second heat exchanger (7) and a mixed bed (8), the tube-side outlet of the first heat exchanger (6) is sequentially connected to a third heat exchanger (9) and a deaerator (10) through pipelines, and the tube-side outlet of the third heat exchanger (9) is connected to the inlet of the steam condensate tank (1) through pipelines.
2. The steam condensate treatment and recycling device according to claim 1, characterized in that: The circulation pipeline (2), the dewatering device pipeline (3) and the dewatering system pipeline (4) are respectively provided with a circulation pipeline electric valve (11), a dewatering device pipeline electric valve (12) and a dewatering system pipeline electric valve (13), and the dewatering device pipeline electric valve (12) and the dewatering system pipeline electric valve (13) are respectively electrically connected to the conductivity meter (5).
3. The steam condensate treatment and recycling device according to claim 1, characterized in that: A condensate pump (14) is provided on the outlet pipeline of the steam condensate tank (1).
4. The steam condensate treatment and recycling device according to claim 1, characterized in that: The pipe side of the second heat exchanger (7) is connected to a circulating water pipeline (15), and a circulating water control valve (16) is provided on the circulating water pipeline (15).
5. The steam condensate treatment and recycling device according to claim 4, characterized in that: A thermometer (17) is provided on the shell-side outlet pipeline of the second heat exchanger (7), and the circulating water control valve (16) is electrically connected to the thermometer (17).
6. The steam condensate treatment and recycling device according to claim 1, characterized in that: The pipe side inlet of the third heat exchanger (9) is connected to a steam pipeline (18), and a steam control valve (19) is provided on the steam pipeline (18).
7. The steam condensate treatment and recycling device according to claim 6, characterized in that: A temperature detection device (20) is provided on the outlet pipeline of the deaerator (10), and the temperature detection device (20) is electrically connected to the steam control valve (19).