Thermal steady-state salt removal device integrated with disinfection function
By integrating a heat-stable salt removal device with disinfection function, and utilizing the synergistic disinfection of ultraviolet light and ozone, the problem of the lack of disinfection function in existing devices is solved, achieving efficient removal of heat-stable salt, reducing costs and improving operating efficiency and the activity of amine solution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU DUONENG ENVIRONMENTAL PROTECTION TECH
- Filing Date
- 2025-05-30
- Publication Date
- 2026-04-28
AI Technical Summary
Existing thermally stable salt removal devices lack disinfection functions, leading to increased processing costs and reduced operating efficiency. Furthermore, existing methods cannot effectively remove thermally stable salts from amine solutions, affecting the activity of the amine solution and increasing the risk of equipment corrosion.
Design a thermally stable salt removal device with integrated disinfection function, including a pretreatment box, a thermally stable salt removal box, an ion exchange chamber, a catalytic oxidation reactor, and an integrated disinfection module chamber. It utilizes ultraviolet light and ozone for synergistic disinfection, combined with pH adjustment and intelligent control, to achieve fully automated operation of the entire process.
By using ultraviolet light and ozone for synergistic disinfection, the need for external equipment is reduced, treatment costs are lowered, operating efficiency is improved, and the removal effect of thermally stable salts and the water quality safety of amine solutions are significantly enhanced.
Smart Images
Figure CN224172642U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of thermally stable salt removal technology, specifically a thermally stable salt removal device with integrated disinfection function. Background Technology
[0002] Thermally stable salts are non-renewable salts formed during the amine desulfurization process when amine solutions (such as MEA, DEA, MDEA, etc.) react with acidic gases (such as CO2, H2S) due to the presence of impurities (such as O2, SO3, organic acids, etc.). These salts do not decompose at high temperatures (hence the term "thermally stable") and accumulate in the amine solution, leading to the following problems: reduced effective concentration of amine solution and desulfurization efficiency, aggravated equipment corrosion, and increased risk of system foaming.
[0003] Therefore, physical or chemical methods are generally used in thermal steady-state salt removal devices to remove HSS from amine solutions, restore the activity of the amine solution, extend its service life, and reduce operating costs. Common removal technologies include ion exchange, electrodialysis, distillation, and chemical precipitation.
[0004] During the use of the above-mentioned removal methods, the presence of some organic matter or pathogens in the wastewater can affect the quality of the removed salt. Therefore, disinfection is required. However, existing removal devices lack relevant disinfection functions and require the use of additional disinfection devices, which increases the cost of treatment and reduces operating efficiency to some extent.
[0005] Therefore, in view of the above-mentioned problems, this technical solution proposes a thermally stable salt removal device with integrated disinfection function. Summary of the Invention
[0006] The purpose of this invention is to provide a thermally stable salt removal device with integrated disinfection function to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A thermally stable salt removal device with integrated disinfection function includes a pretreatment tank and a thermally stable salt removal tank. The pretreatment tank has an inlet at the top for inputting amine solution / wastewater. Multiple pre-filter plates are spaced apart on the upper side of the pretreatment tank for pre-filtration of the amine solution / wastewater (i.e., removing suspended solids and large particulate impurities to protect downstream equipment). A pH adjustment chamber is located at the bottom of the pretreatment tank. The amine solution filtered by the pre-filter plates is transferred to the pH adjustment chamber for pH adjustment, optimizing the wastewater pH to suit subsequent treatment. The lower side wall of the pH adjustment chamber is connected via a transfer connection. The pipe is connected to the thermal stable salt removal tank, meaning that the filtered and neutralized amine solution / wastewater is transferred to the thermal stable salt removal tank for thermal stable salt removal and disinfection. The thermal stable salt removal tank is equipped with, from top to bottom, an ion exchange chamber for HSS ion removal from the amine solution / wastewater, a catalytic oxidation reactor for decomposing organic acids, and an integrated disinfection module chamber for disinfection. Through the coordinated treatment between the ion exchange chamber, the catalytic oxidation reactor, and the integrated disinfection module chamber, the thermal stable salt in the amine solution / wastewater is efficiently removed, and the water quality of the amine solution / wastewater is ensured to be safe.
[0009] The integrated disinfection module is designed with a columnar structure and transparent walls. An ultraviolet (UV) disinfection chamber is located on the outer side of the transparent wall facing the UV disinfection chamber. Multiple axially spaced UV lamp strip slots are formed in the sidewall of the transparent wall facing the UV disinfection chamber. UV lamp strips are fitted into these slots and electrically connected to adjacent UV lamp strips via connecting cables. UV disinfection is achieved by activating the UV lamp strips and allowing them to irradiate the interior of the integrated disinfection module through the transparent wall. An ozone inlet is connected to the bottom of the integrated disinfection module. The inner end of the ozone inlet is connected to an ozone generator located outside the thermally stable salt removal chamber via an ozone transmission pipe. Ozone is generated by the ozone generator and discharged into the integrated disinfection module through the ozone transmission pipe and ozone inlet. The strong oxidizing properties of ozone degrade organic matter and sterilize it. Combined with UV disinfection, this ensures high-quality sterilization of amine solution / wastewater. Simultaneously, a control module is located at the bottom of the thermally stable salt removal chamber within the integrated disinfection module. This control module is used to control the intelligent operation of the entire device, enabling the integrated disinfection-type thermally stable salt removal operation mode.
[0010] Compared with the prior art, the beneficial effects of this utility model are: through the synergistic disinfection of ultraviolet light and ozone, no external equipment is required, reducing processing costs and improving operating efficiency.
[0011] The synergistic effect of pretreatment, ion exchange, catalytic oxidation and disinfection modules significantly improves the removal efficiency of thermally stable salts.
[0012] The control module adjusts pH levels, flow rate, and disinfection parameters in real time to achieve fully automated operation of the entire process.
[0013] The transparent chamber walls and UV lamp slots enhance light efficiency; the stirring mechanism promotes ozone diffusion and improves disinfection uniformity. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of a thermally stable salt removal device with integrated disinfection function;
[0015] Figure 2 for Figure 1 A magnified structural diagram of A in the middle;
[0016] The components include: a pretreatment tank 10, a thermally stable salt removal tank 11, a feed inlet 12, a pre-filter plate 13, a pH adjustment solution inlet 14, a pH adjustment chamber 15, a pH meter mounting hole 16, a transfer connecting pipe 17, a control valve 18, an ion exchange chamber 19, a catalytic oxidation reactor 20, an integrated disinfection module chamber 21, an ultraviolet disinfection chamber 22, an exhaust port 23, an ozone inlet port 24, an ozone transmission pipe 25, an ozone generator 26, a transparent chamber wall 27, an ultraviolet lamp strip groove 28, an ultraviolet lamp strip 29, a connecting cable 30, an exhaust port 31, a control module chamber 32, an insulation layer 33, and a stirring mechanism 34. Detailed Implementation
[0017] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0021] Please see Figures 1-2 A thermally stable salt removal device with integrated disinfection function includes a pretreatment tank 10 and a thermally stable salt removal tank 11. The pretreatment tank 10 has an inlet 12 at the top for inputting amine solution / wastewater. Multiple pre-filter plates 13 are spaced apart on the upper side of the pretreatment tank 10 for pre-filtration of the amine solution / wastewater (i.e., removing suspended solids and large particulate impurities to protect downstream equipment). A pH adjustment chamber 15 is located at the bottom of the pretreatment tank 10. The amine solution filtered by the pre-filter plates 13 is transferred to the pH adjustment chamber 15 for pH adjustment to optimize the wastewater pH for subsequent treatment. The lower side wall of the pH adjustment chamber 15 is connected via a transfer... Pipe 17 is connected to the thermal stable salt removal tank 11, meaning that the filtered and neutralized amine liquid / wastewater is transferred to the thermal stable salt removal tank 11 for thermal stable salt removal and disinfection. The thermal stable salt removal tank 11 is equipped with, from top to bottom, an ion exchange chamber 19 for HSS ion removal of amine liquid / wastewater, a catalytic oxidation reactor 20 for decomposing organic acids, and an integrated disinfection module chamber 21 for disinfection. Through the coordinated treatment between the ion exchange chamber 19, the catalytic oxidation reactor 20, and the integrated disinfection module chamber 21, the thermal stable salt in the amine liquid / wastewater is efficiently removed, and the water quality of the amine liquid / wastewater is ensured to be safe.
[0022] The integrated disinfection module compartment 21 is configured as a columnar structure with transparent walls 27. An ultraviolet disinfection chamber 22 is located on the outer side of the transparent walls 27. Multiple axially spaced ultraviolet lamp strip grooves 28 are formed in the side wall of the transparent walls 27 facing the ultraviolet disinfection chamber 22. Ultraviolet lamp strips 29 are fitted into the ultraviolet lamp strip grooves 28, and adjacent ultraviolet lamp strips 29 are electrically connected via connecting cables 30. Ultraviolet disinfection is achieved by activating the ultraviolet lamp strips 29, which irradiate the interior of the integrated disinfection module compartment 21 through the transparent walls 27. An ozone inlet 24 is connected to the bottom of the integrated disinfection module compartment 21. 4. The inner end is connected to an ozone generator 26 located outside the thermally stable salt removal chamber 11 via an ozone transmission pipe 25. Ozone is generated by the ozone generator 26 and discharged into the integrated disinfection module chamber 21 through the ozone transmission pipe 25 and ozone inlet 24. The strong oxidizing properties of ozone degrade organic matter and sterilize it. Combined with ultraviolet disinfection, it ensures high-quality sterilization of amine liquid / wastewater. At the same time, a control module chamber 32 is set at the bottom of the thermally stable salt removal chamber 11 at the bottom of the integrated disinfection module chamber 21. The control module chamber 32 is used to control the intelligent operation of the entire device and realize the integrated disinfection thermally stable salt removal operation mode of this device.
[0023] In this embodiment of the invention, a pH adjustment liquid inlet 14 is provided on one side wall of the pH adjustment chamber 15. pH adjustment liquid (acidic solution or alkaline solution) is added into the pH adjustment chamber 15 through the pH adjustment liquid inlet 14. A pH detector mounting hole 16 is provided on the other side wall. After the pH detector is installed on the pH detector mounting hole 16, it extends into the pH adjustment chamber 15 to detect the acidity and alkalinity, so as to ensure the accuracy of amine liquid / wastewater adjustment.
[0024] A control valve 18 is provided on the transfer connecting pipe 17 to control the transfer of amine solution / wastewater in pH adjustment chamber 15 toward thermal stable salt removal chamber 11. A discharge hole 31 is provided on the lower side wall of integrated disinfection module chamber 21 for the discharge of amine solution / wastewater after disinfection.
[0025] An exhaust vent 23 is provided on one side of the upper part of the integrated disinfection module compartment 21 for the discharge of ozone;
[0026] The pretreatment tank 10 and the thermally stable salt removal tank 11 are equipped with an insulation layer 33 inside the tank walls to keep the amine liquid / wastewater at a constant temperature during the treatment process, thus ensuring the stability of disinfection and removal of thermally stable salts.
[0027] In one embodiment of the present invention, the operating principle of the ion exchange chamber 19 is based on the reversible replacement reaction between exchangeable ions (such as Na⁺, H⁺, OH⁻) in the solid ion exchanger (resin or zeolite) and target ions (such as Cl⁻, SO₄²⁻ and other HSS components) in the solution;
[0028] Cation exchange: The resin releases H⁺ or Na⁺ and adsorbs cations such as Ca²⁺ and Mg²⁺ in the wastewater;
[0029] Anion exchange: The resin releases OH⁻ or Cl⁻ and adsorbs anions such as Cl⁻ and SO₄²⁻ in the wastewater.
[0030] Specifically, the ion exchange chamber 19 is equipped with multiple sets of parallel-designed exchange columns, filled with ion exchange resin. Amine liquid / wastewater flows through the resin bed from top to bottom. During this process, the cation resin is regenerated by rinsing with HCl or NaCl solution to restore the H⁺ / Na⁺ morphology.
[0031] Anion resin regeneration: Rinse with NaOH solution to restore the OH⁻ form;
[0032] Continuous operation is achieved by connecting multiple columns in parallel, with one column adsorbing while the other column regenerates.
[0033] The above operating principle is a conventional technology and will not be elaborated here;
[0034] Regarding the operating principle of the catalytic oxidation reactor 20, under the action of catalysts (such as Fe²⁺, TiO2, noble metals), oxidants (H2O2, O3, O2) generate strong oxidizing free radicals (·OH, ·O2⁻), which decompose organic matter or inorganic salts;
[0035] Homogeneous catalysis (e.g., Fenton reaction):
[0036] Fe²⁺ + H2O2 → Fe³⁺ + ·OH + OH⁻
[0037] OH oxidizes organic matter into CO2 and H2O, or breaks the CS / CN bond in HSS.
[0038] Heterogeneous catalysis (e.g., TiO2 / UV):
[0039] Photogenerated electron-hole pairs oxidize pollutants, suitable for recalcitrant HSS;
[0040] The catalytic oxidation reactor 20 is equipped with a fluidized bed reactor: the catalyst is suspended to enhance mass transfer efficiency.
[0041] Fixed-bed reactor: catalyst-filled; during operation, the H2O2 / O3 dosage is adjusted according to the pollutant load.
[0042] The operating principle described above is a conventional technology and will not be elaborated upon here.
[0043] As a preferred embodiment of the present invention, multiple sets of stirring mechanisms 34 are uniformly installed downward at the bottom of the catalytic oxidation reactor 20. The stirring mechanism 34 is used to stir the amine liquid / wastewater after the removal of thermally stable salt inside the integrated disinfection module chamber 21, so that it can fully contact the surrounding ultraviolet light and the ozone injected by the ozone inlet 24 can diffuse evenly, thereby increasing the disinfection effect to a certain extent.
[0044] The stirring mechanism 34 includes a corrosion-resistant stirring motor fixed at the bottom of the catalytic oxidation reactor 20. The bottom output end of the motor is connected to a stirring shaft, which comes into contact with the amine liquid / wastewater under the rotation of the stirring shaft to agitate it.
[0045] In a preferred embodiment of the present invention, the internal electrical components such as the control valve 18, ion exchange chamber 19, catalytic oxidation reactor 20, integrated disinfection module chamber 21, ultraviolet disinfection chamber 22, stirring mechanism 34, and ozone generator 26 are all connected to the control module chamber 32. That is, the control module chamber 32 is used to efficiently and rationally control the above-mentioned electrical components to ensure the smooth operation of the entire device. The control module chamber 32 can be a PLC control system, which is electrically connected to the above-mentioned electrical components, and then controlled by the operator. The control principle can be referred to the existing PLC control system, and there is no need to describe it in detail.
[0046] The working principle of this utility model is as follows: when the device is idle, all the above-mentioned driving components, which refer to power elements, electrical components and compatible power supplies, are connected by wires. The electrical components are connected in sequence. The detailed connection method is known in the field. The following mainly introduces the working principle and process, and does not describe the electrical control. The amine liquid enters the pretreatment tank 10 through the feed port 12 and passes through the multi-stage pre-filter plate 13 to remove suspended solids and large particulate impurities.
[0047] After filtration, the liquid flows into pH adjustment chamber 15, where it is monitored in real time by a pH meter and an adjusting solution is added to optimize the pH value to a suitable level.
[0048] The amine solution, after being regulated, enters the removal chamber 11 through the transfer connecting tube and sequentially passes through the ion exchange chamber 19 to remove the cationic / anionic HSS.
[0049] Inside the catalytic oxidation reactor 20, the catalyst and oxidant decompose residual organic matter and recalcitrant salts.
[0050] The amine solution enters the integrated disinfection module chamber 21, where the ultraviolet light strip 29 irradiates and ozone is injected in synergy to completely kill pathogens and degrade organic matter.
[0051] The stirring mechanism agitates the liquid to ensure uniform distribution of the disinfectant; the treated amine solution is discharged through the discharge port, and the exhaust gas is discharged through the exhaust port.
[0052] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.
Claims
1. A thermally stable salt removal device with integrated disinfection function, characterized in that, It includes a pretreatment box (10) and a thermally stable salt removal box (11); the pretreatment box (10) is provided with a feed inlet (12) at the top, and a multi-stage pre-filter plate (13) and a pH adjustment chamber (15) are provided inside. The pH adjustment chamber (15) is connected to the removal box (11) through a transfer connecting pipe (17); the removal box (11) is provided with an ion exchange chamber (19), a catalytic oxidation reactor (20) and an integrated disinfection module chamber (21) from top to bottom; the integrated disinfection module chamber (21) has a transparent chamber wall (27), an ultraviolet disinfection chamber (22) is provided on the outside and an ultraviolet lamp strip (29) is installed, and an ozone generator (26) is connected to the bottom; the removal box (11) is also provided with a control module chamber (32) and a heat insulation layer (33).
2. The thermally stable salt removal device with integrated disinfection function according to claim 1, characterized in that, The transparent wall (27) of the integrated disinfection module (21) is provided with axially distributed ultraviolet lamp strip grooves (28), and the ultraviolet lamp strips (29) are embedded in the grooves and connected in series by connecting cables (30); the ozone generator (26) is connected to the ozone inlet (24) at the bottom of the integrated disinfection module (21) through an ozone transmission pipe (25).
3. The thermally stable salt removal device with integrated disinfection function according to claim 1, characterized in that, The bottom of the catalytic oxidation reactor (20) is equipped with a stirring mechanism (34), which includes a corrosion-resistant stirring motor and a stirring shaft.
4. The thermally stable salt removal device with integrated disinfection function according to claim 1, characterized in that, The pH adjustment chamber (15) of the pretreatment tank (10) is provided with a pH adjustment liquid inlet (14) and a pH detector mounting hole (16) on its side wall, and a control valve (18) is provided on the transfer connecting pipe (17).
5. The thermally stable salt removal device with integrated disinfection function according to claim 1, characterized in that, The ion exchange chamber (19) is filled with cation / anion exchange resin and adopts a multi-column parallel structure to achieve continuous adsorption and regeneration.
6. The thermally stable salt removal device with integrated disinfection function according to claim 1, characterized in that, The control module compartment (32) is a PLC control system, which is electrically connected to the pH detector, control valve (18), ultraviolet lamp strip (29), ozone generator (26) and stirring mechanism (34).