Iron content on-line monitoring device for steam condensate water recovery

Abstract

This utility model discloses an online iron content monitoring device for steam condensate recovery, comprising a housing, an upper partition plate at the upper end of the inner side of the housing, a water outlet pipe at the center of the lower surface of the upper partition plate, an iron ion analyzer at the side of the water outlet pipe, a dispersion rotating plate at the center of the inner side of the housing, and a lower partition plate at the lower end of the inner side of the housing, with a drain pipe assembly at the center of the lower surface of the lower partition plate. This online iron content monitoring device for steam condensate recovery can detect the iron ion concentration in the steam condensate discharged from the water outlet pipe in real time, and can adjust the three-way valve according to the iron ion concentration to ensure that water exceeding the iron ion standard is discharged through the wastewater pipe, preventing excessive condensate from entering the recovery pipeline. It eliminates the need for manual detection and comparison, has high detection efficiency, and is convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of steam condensate recovery technology, specifically to an online monitoring device for iron content in steam condensate recovery. Background Technology

[0002] In the production process of phosphate esters, the synthesis of phosphate esters is usually achieved through the esterification reaction of phosphoric acid with alcohols. This reaction is an endothermic process, and steam is typically used to indirectly heat the reactor through a jacket or coil to provide a stable heat source (temperature range usually 150-250℃) and ensure efficient reaction. Currently, the temperature of the steam after use is still 80-90℃. Directly discharging it at this temperature not only wastes water resources but also wastes heat. Therefore, it is necessary to recover and reuse the steam.

[0003] Currently, the heat in steam is recovered using a heat exchanger, and then the steam condensate is recovered. After passing through the reactor jacket and heat exchanger piping, the steam carries some iron ions and other impurities, requiring filtration before use. To address this issue, our unit has developed a recovery device using a dual filtration method involving a manganese sand quartz filter and an activated carbon filter to remove iron ions and other impurities. To ensure the adsorption effect of the filters and avoid filter saturation leading to a significant reduction in adsorption efficiency, it is necessary to detect the iron ion concentration in the water for timely filter flushing. However, existing methods for detecting iron ion concentration use colorimetry, which is inefficient and cannot detect the iron ion concentration in the filtered water in a timely manner, resulting in excessively high iron ion concentrations in some recovered water. Therefore, this application provides an online iron content monitoring device for steam condensate recovery to solve the above problems. Utility Model Content

[0004] The technical problem this invention aims to solve is to overcome existing defects and provide an online monitoring device for iron content in steam condensate recovery. This device can detect the concentration of iron ions in the steam condensate discharged from the outlet pipe in real time, and can adjust the three-way valve according to the iron ion concentration. This ensures that if the iron ion concentration in the steam condensate exceeds the standard, the excess water can be discharged through the wastewater pipe, preventing the excess condensate from entering the recovery pipeline. It eliminates the need for manual detection and comparison, has high detection efficiency, and is easy to use, effectively solving the problems in the background technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an online monitoring device for iron content in steam condensate recovery, comprising a housing, an upper partition plate at the upper end of the inner side of the housing, a water outlet pipe at the middle of the lower surface of the upper partition plate, an iron ion analyzer at the side of the water outlet pipe, a dispersion rotating plate at the middle of the inner side of the housing, and a lower partition plate at the lower end of the inner side of the housing, with a drain pipe assembly at the middle of the lower surface of the lower partition plate.

[0006] As a preferred embodiment of this invention, a flange is provided on the top of the housing.

[0007] As a preferred technical solution of this utility model, the dispersing transfer plate includes a partition plate installed in the middle of the inner side of the shell. The upper surface of the partition plate has an arc-shaped structure with a high center and a low edge, and the bottom of the partition plate and the lowest part of its upper surface are provided with uniformly distributed dispersing tubes.

[0008] As a preferred embodiment of this utility model, the upper surface of the lower partition has a structure with high edges and low center.

[0009] As a preferred technical solution of this utility model, the drain pipe assembly includes a three-way pipe installed in the middle of the lower surface of the lower partition plate. One outlet of the three-way pipe is provided with a drain pipe, and the other outlet of the three-way pipe is provided with a wastewater pipe. A three-way valve is provided on the three-way pipe.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] The online iron content monitoring device for steam condensate recovery according to this utility model can detect the concentration of iron ions in the steam condensate discharged from the outlet pipe in real time, and can adjust the three-way valve according to the iron ion concentration. This ensures that if the iron ion concentration in the steam condensate exceeds the standard, the water exceeding the standard can be discharged through the wastewater pipe, preventing the excessive condensate from entering the recovery pipeline. It does not require manual detection and comparison, has high detection efficiency, and is easy to use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0014] Figure 3 for Figure 2 A front view structural diagram;

[0015] Figure 4 This is a schematic diagram of the filter being installed at the bottom.

[0016] In the diagram: 1. Shell, 2. Upper partition, 21. Water outlet pipe, 22. Iron ion analyzer, 3. Middle partition, 31. Dispersion tube, 4. Lower partition, 5. T-joint, 6. Drainage pipe, 7. Wastewater pipe. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 This utility model provides a technical solution: an online monitoring device for iron content in steam condensate recovery, comprising a housing 1, an upper partition 2 on the upper end of the inner side of the housing 1, a water outlet pipe 21 in the middle of the lower surface of the upper partition 2, an iron ion analyzer 22 on the side of the water outlet pipe 21, a dispersion rotating plate in the middle of the inner side of the housing 1, and a lower partition 4 at the lower end of the inner side of the housing 1, with a drain pipe assembly in the middle of the lower surface of the lower partition 4. The device is installed at the bottom of a filter device that has a function of rinsing the filter medium. It first detects the steam condensate, and then discharges the filtered steam condensate through dispersion and concentration, increasing the flow time of the steam condensate inside the housing 1 and enabling timely adjustment of the drainage position during the rinsing stage.

[0019] Furthermore, a flange is provided on the top of the housing 1 to facilitate the installation of the device onto the bottom of the filter.

[0020] Furthermore, the dispersing transfer plate includes a partition plate 3 installed in the middle of the inner side of the housing 1. The upper surface of the partition plate 3 has an arc-shaped structure with a high center and a low edge, and the bottom of the partition plate 3 and the lowest part of its upper surface are provided with uniformly distributed dispersing tubes 31.

[0021] Furthermore, the upper surface of the lower partition 4 has a structure that is high at the edges and low in the middle.

[0022] Furthermore, the drain pipe assembly includes a three-way pipe 5 installed in the middle of the lower surface of the lower partition 4. One outlet of the three-way pipe 5 is provided with a drain pipe 6, and the other outlet of the three-way pipe 5 is provided with a wastewater pipe 7. The three-way pipe 5 is equipped with a three-way valve, which discharges the filtered steam condensate in a decentralized and centralized manner, increases the flow time of the steam condensate inside the shell 1, and allows for timely adjustment of the three-way valve during filtration and rinsing media replacement, preventing rinsing water from flowing into the next filter, and facilitating the centralized discharge and cleaning of impurities in the filter media.

[0023] The iron ion analyzer 22 used in this utility model is a commonly used electrical device in the prior art. Its working method and circuit structure are well known technologies and will not be described in detail here. The detection probe of the iron ion analyzer 22 is installed inside the water outlet pipe 21, and the iron ion analyzer 22 is electrically connected to an external PLC controller, which facilitates the control of the three-way valve through the PLC controller and timely adjustment of the drainage pipeline.

[0024] The iron ion analyzer 22 uses the LDX-HL-GXF-223 online iron ion monitor. The detection principle is based on the 1,10-phenanthroline spectrophotometric method, which determines the iron ion concentration through a colorimetric reaction. It conforms to the national standard GB / T 14427-93 and is suitable for steam condensate systems in industries such as thermal power generation and petrochemicals. It is installed at the boiler feedwater inlet or in the middle of the condensate recovery pipeline to ensure the continuity and accuracy of water quality monitoring.

[0025] The iron ion analyzer 22, such as LDX-HL-GXF-223, serves as a sensing unit, monitoring the iron ion concentration in the steam condensate in the outlet pipe 21 in real time and generating corresponding analog / digital signals. The PLC controller, such as Siemens S7-1200 or Mitsubishi FX series, serves as the core processing unit, receiving signals from the analyzer, executing preset control algorithms such as threshold comparison and PID adjustment, and generating control commands. The three-way valve, such as an electric or pneumatic three-way valve, serves as an execution unit, switching the pipeline flow direction according to the PLC commands. When the iron ion concentration exceeds the standard, the wastewater is discharged through the wastewater pipe 7, and the PLC triggers the alarm device.

[0026] When using:

[0027] The filtered steam condensate enters the upper side of the upper baffle 2 and is discharged through the outlet pipe 21. The iron ion analyzer 22 detects the iron ion concentration of the water discharged from the outlet pipe 21.

[0028] Water discharged from outlet pipe 21 is guided by middle baffle 3 and discharged through dispersion pipe 31, and then collected by lower baffle 4 and discharged through tee pipe 5 and drain pipe 6;

[0029] When the iron ion analyzer 22 detects that the iron ion concentration in the water discharged from the outlet pipe 21 is too high, it indicates that the filtration effect of the filter has decreased and the filter medium in the filter needs to be flushed.

[0030] At this time, the three-way valve is adjusted so that the water in the housing 1 is no longer discharged through the drain pipe 6, and the water used for rinsing the filter media and the steam condensate remaining inside the housing 1 are discharged through the wastewater pipe 7.

[0031] This invention can detect the concentration of iron ions in the steam condensate discharged from the outlet pipe 21 in real time, and can adjust the three-way valve according to the iron ion concentration. This ensures that if the iron ion concentration in the steam condensate exceeds the standard, the water exceeding the standard can be discharged through the wastewater pipe 7, preventing the excessive condensate from entering the recycling pipeline. It eliminates the need for manual detection and comparison, has high detection efficiency, and is easy to use.

[0032] The parts not disclosed in this utility model are all prior art, and their specific structures, materials, and working principles will not be described in detail. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An on-line monitoring device for iron content in steam condensate recovery, comprising a housing (1), characterized in that: The upper part of the inner side of the shell (1) is provided with an upper partition (2), the lower part of the upper partition (2) is provided with a water outlet pipe (21), the side of the water outlet pipe (21) is provided with an iron ion analyzer (22), the middle part of the inner side of the shell (1) is provided with a dispersion rotating plate, and the lower part of the inner side of the shell (1) is provided with a lower partition (4), the middle part of the lower surface of the lower partition (4) is provided with a drain pipe assembly.

2. The on-line iron content monitoring device for steam condensate recovery according to claim 1, characterized in that: The top of the housing (1) is provided with a flange.

3. The on-line iron content monitoring device for steam condensate recovery according to claim 1, characterized in that: The dispersing transfer plate includes a partition plate (3) installed in the middle of the inner side of the housing (1). The upper surface of the partition plate (3) has an arc-shaped structure with a high center and a low edge. The bottom of the partition plate (3) and its lowest part is provided with evenly distributed dispersing tubes (31).

4. The on-line iron content monitoring device for steam condensate recovery according to claim 1, characterized in that: The upper surface of the lower partition (4) has a structure with high edges and low center.

5. The on-line iron content monitoring device for steam condensate recovery according to claim 1, characterized in that: The drain pipe assembly includes a three-way pipe (5) installed in the middle of the lower surface of the lower partition (4). One outlet of the three-way pipe (5) is provided with a drain pipe (6), and the other outlet of the three-way pipe (5) is provided with a wastewater pipe (7). A three-way valve is provided on the three-way pipe (5).

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