A steam condensate recovery and liquid preparation recycling system

Abstract

The invention discloses a system for recycling and utilizing steam condensate, relates to the technical field of condensate refining, and aims to solve the problem that a static water filtering method of a resin catcher causes resin accumulation and thus limits the water filtering speed. The invention comprises a main tank body arranged on an outlet pipeline of an ion exchanger, and a control panel is embedded on the main tank body. On the one hand, a double vortex structure is used in the resin capturing process of steam condensate to achieve a dynamic filtering mode for steam condensate and achieve rapid filtration, thereby avoiding the situation that the bottom accumulated resin affects the water filtering speed. On the other hand, a control system is arranged in the resin capturing process to make guiding actions according to whether it is blocked, and the double vortex water filtering structure is used to complete the stable filtration of steam condensate. The two together achieve the smooth operation of steam condensate, and further form the normal operation of the recycling and liquid mixing circulation system.

Description

Technical Field

[0001] The invention relates to the technical field of condensate refining, and in particular to a steam condensate recovery and liquid preparation recycling system. Background Art

[0002] Condensate refining is mainly to recover the condensate produced in steam equipment and steam pipelines, and use the produced water to produce desalted water and supply iron removal condensate through process equipment. The condensate recovery and treatment process can effectively reduce the pressure of purchasing desalted water, avoid production stagnation caused by external restrictions on desalted water during production, and also effectively reduce the loss of condensate in the factory.

[0003] The recycled water of sewage treatment plants mainly includes industrial wastewater and domestic sewage. Through specific treatment processes, such as the improved A2 / O wastewater treatment process, and deep treatment technologies such as coagulation-sedimentation-filtration, the treated water quality reaches a certain standard and can be reused. This recycled water can be used for the supply of the above-mentioned production water process.

[0004] When using resin for online water ion exchange treatment, when the quality of the resin is poor (insufficient strength), the water pressure disturbance is large (especially high pressure disturbance), and the resin cylinder wall is damaged, the resin will enter the entire water system and affect the normal operation of other equipment in the system. Therefore, a resin catcher is required. The resin catcher is mainly to install a filter with a much smaller pore size than the resin on the water system pipeline near the outlet of the ion exchanger and other equipment containing resin, and has a flushing function. When the resin passes through, it can be intercepted and captured by the filter. At the same time, it is automatically flushed through the front and rear differential pressure to discharge the captured resin out of the system.

[0005] In combination with the above, in the prior art condensate refining process circulating liquid distribution system, the above-mentioned resin trap is used in the condensate refining stage. During the actual use of the resin trap, a relatively static filtering method is used for resin capture. The resin accumulates in the filter element of the trap, resulting in a linear decrease in the water filtration rate, which affects the smooth resin capture and further hinders the operation of the steam condensate recovery and liquid distribution circulation system of the entire process. For this reason, the present application proposes a solution. Summary of the invention

[0006] The object of the present invention is to provide a steam condensate recovery and liquid preparation recycling system for solving the problem that the static water filtering method of the resin trap causes resin accumulation and thus limits the water filtering speed.

[0007] The object of the present invention can be achieved by the following technical solutions: A steam condensate recovery and liquid distribution recycling system, including a main tank body arranged on the outlet pipeline of the ion exchanger, a control panel is embedded on the main tank body, a filter element body is suspended in the middle of the main tank body, stepped structures are staggered at the upper and lower ends of the filter element body, and stepped sealing plates are installed inside the filter element body through the stepped structures. A horizontal sealing plate is connected to the bottom side of the stepped sealing plate and is matched with the openings at the upper and lower ends of the filter element body. A quarter-circular tangential arc edge is provided at the inner corner of the stepped sealing plate; A water inlet pipe is tangentially penetrated through the top of the main tank body corresponding to the filter element body. Inside the upper end of the filter element body, a flow disturbing cover and an aggregation hopper are sequentially arranged, and a torsion paddle blade covering the top opening is horizontally rotatably arranged inside the flow disturbing cover.

[0008] It is further set as: The filter element body is composed of a plurality of annular bodies with a "C" - shaped cross - section stacked together, and there is a gap between the outer ring side of the filter element body and the inner wall of the main tank body.

[0009] It is further set as: The filter element body is welded by stainless - steel trapezoidal wire materials and support ribs distributed in a circumferential array, and the sieve hole gaps of the filter element body are in a "V" - shape.

[0010] It is further set as: The top flange of the main tank body is connected to an upper tank body, and a water outlet pipe for discharging condensate is arranged in the middle of the upper end of the upper tank body.

[0011] It is further set as: Aggregation holes are provided at the bottom of the aggregation hopper. The aggregation hopper is connected to a resin discharge pipe through the bottom of the aggregation holes. The bottom opening of the main tank body is installed with a lower discharge pipe, and a maintenance plug inserted into the lower discharge pipe is installed at the bottom of the resin discharge pipe.

[0012] It is further set as: An installation frame is inserted into the inner side of the top opening of the flow disturbing cover, and the torsion paddle blade is connected to the middle position at the bottom of the installation frame through a middle rotating shaft.

[0013] It is further set as: A middle discharge pipe is horizontally installed on the upper side of the bottom horizontal sealing plate of the main tank body. A plurality of exhaust branch pipes are symmetrically installed on the outer side of the end of the middle discharge pipe extending into the filter element body. Exhaust holes communicating with the middle discharge pipe are provided at the bottom of the exhaust branch pipes.

[0014] It is further set as: A control system is arranged inside the control panel. The control system includes a recovery and transportation module, a liquid flow monitoring module, and a circulation processing module that are communicatively connected;

[0015] The recovery and delivery module is used to obtain the liquid flow value YLz of the steam condensate of the production equipment within the time threshold, wherein the liquid flow value YLz includes the liquid level value YW in the resin trap and the flow value LL entering the resin trap, and sends the liquid flow value YLz to the liquid flow monitoring module, and the liquid flow monitoring module receives the liquid flow value YLz and the preset liquid flow threshold value YLYz for evaluation and analysis, and the analysis process is as follows:

[0016] If the liquid flow value YLz>the liquid flow threshold value YLYz, a deceleration signal is generated and sent to the circulation processing module to execute the action;

[0017] If the liquid flow value YLz is less than the liquid flow threshold value YLYz, a speed-up signal is generated and sent to the circulation processing module to execute the action;

[0018] If the liquid flow value YLz = the liquid flow threshold YLYz, a maintenance signal is generated and no action is performed.

[0019] The present invention has the following beneficial effects:

[0020] 1. The present invention aims at the problem that the static water filtering method of the resin catcher causes resin accumulation and thus limits the water filtering speed; the steam condensate entering the filter element through the water inlet pipe collides with the tangential arc edge at the bottom of the stepped sealing plate under the tangential guiding action, and again shows a vertical falling trend under the guidance of the tangential arc edge, thereby driving the twisting blades to complete the rotation. The twisting blades during the rotation process can drive the steam condensate filled in the spoiler to form a vortex and fall downward from the bottom opening into the gathering bucket. In this process, not only can the steam condensate be driven to form a vortex by the continuously rotating twisting blades, but also a secondary vortex can be continuously formed from the bottom gathering hole through the gathering bucket. Under the double vortex state, the steam condensate can be quickly filtered and a dynamic filtering method can be formed, thereby impacting the bottom accumulated resin to prevent the accumulated resin from affecting the water filtering speed;

[0021] 2. During the resin capture process of the resin catcher, the liquid level value and flow value within the real-time time threshold are obtained through numerical calculation to obtain the liquid flow value, and the liquid flow value is compared with the preset liquid flow threshold to form a speed reduction signal, a speed increase signal and a maintenance signal, and respectively perform actions of reducing the steam condensate flow rate, increasing the steam condensate flow rate and maintaining the flow rate unchanged per unit time, to ensure that whether the resin catcher is blocked during actual use is intuitively displayed and action guidance is provided, so as to form operational monitoring and control of the resin catcher's operating conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a schematic diagram of the overall structure of a filtering structure in a steam condensate recovery and liquid preparation recycling system proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the cutaway structure of a tank body of a filtering structure in a steam condensate recovery and liquid preparation recycling system proposed by the present invention;

[0025] Figure 3 This is an internal structural diagram of a filtering structure in a steam condensate recovery and liquid distribution recycling system proposed by the present invention;

[0026] Figure 4 A schematic diagram of the installation of a spoiler assembly of a filtering structure in a steam condensate recovery and liquid distribution recycling system proposed by the present invention;

[0027] Figure 5 The present invention provides a cross-sectional view of a filtering structure in a steam condensate recovery and liquid distribution recycling system.

[0028] In the figure: 1. main tank body; 2. water inlet pipe; 3. water outlet pipe; 4. lower drain pipe; 5. upper tank body; 6. filter element body; 7. stepped sealing plate; 8. resin drain pipe; 9. inspection plug; 10. middle drain pipe; 11. spoiler; 12. mounting frame; 13. twisting blade; 14. gathering bucket; 15. gathering hole; 16. horizontal sealing plate; 17. tangential arc edge; 18. exhaust branch pipe. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1: In view of the problem that the static water filtration method of the resin trap causes resin accumulation and thus limits the water filtration rate in the ion exchange process of the steam condensate recovery and preparation, the following technical solution is proposed:

[0031] Reference Figure 1 - Figure 5As shown in the figure, in this embodiment, a recycling and liquid distribution circulation system for steam condensate includes a main tank body 1 arranged on the outlet pipeline of the ion exchanger. In the middle of the main tank body 1, a filter element body 6 is suspended. The upper and lower ends of the filter element body 6 are provided with stepped structures in a staggered manner. And a stepped sealing plate 7 is installed inside the filter element body 6 through the stepped structure. The bottom side of the stepped sealing plate 7 is connected with a transverse sealing plate 16 that matches the upper and lower end openings of the filter element body 6. At the inner edge of the stepped sealing plate 7, a quarter-circular tangential arc edge 17 is provided; a water inlet pipe 2 is tangentially and penetratingly arranged at the top of the main tank body 1 corresponding to the filter element body 6. Inside the upper end of the filter element body 6, a flow disturbance cover 11 and an aggregation hopper 14 are sequentially arranged. Inside the flow disturbance cover 11, a torsion paddle 13 covering the top opening is horizontally rotatably arranged. Inside the top opening of the flow disturbance cover 11, a mounting frame 12 is inserted. The torsion paddle 13 is connected to the middle position at the bottom of the mounting frame 12 through a middle rotating shaft;

[0032] The filter element body 6 is composed of a plurality of annular bodies with a "C" - shaped cross - section stacked together. There is a gap between the outer ring side of the filter element body 6 and the inner wall of the main tank body 1. The filter element body 6 is made by welding stainless - steel trapezoidal wires and support ribs distributed in a circumferential array. The sieve pore gap of the filter element body 6 is in a "V" shape, enabling the steam condensate circulating through the filter element body 6 to quickly capture the resin;

[0033] The top of the main tank body 1 is flange - connected to an upper tank body 5. And in the middle of the upper end of the upper tank body 5, a water outlet pipe 3 for discharging condensate is provided. An aggregation hole 15 is opened at the bottom of the aggregation hopper 14. The bottom of the aggregation hopper 14 is connected with a resin discharge pipe 8 through the aggregation hole 15. The bottom opening of the main tank body 1 is installed with a lower discharge pipe 4. The bottom of the resin discharge pipe 8 is installed with a maintenance plug 9 inserted into the lower discharge pipe 4. After the resin is filtered through the filter element body 6, the remaining resin accumulates at the aggregation hole 15 and is quickly discharged through the resin discharge pipe 8 under the impact of the eddy current, thus avoiding the problem that the water filtration speed is affected after resin accumulation;

[0034] A middle discharge pipe 10 is horizontally installed on the upper side of the main tank body 1 corresponding to the bottom transverse sealing plate 16. A plurality of exhaust branch pipes 18 are symmetrically installed on the outer side of the end of the middle discharge pipe 10 extending into the filter element body 6. Exhaust holes communicating with the middle discharge pipe 10 are opened at the bottom of the exhaust branch pipes 18.

[0035] Basic principle: Based on the ion exchange process of steam condensate recovery and liquid distribution, the operating conditions of the resin trap are as follows: the steam condensate entering the filter element 6 through the water inlet pipe 2 hits the tangential arc edge 17 at the bottom of the step sealing plate 7 under the action of tangential guidance, and again shows a vertical falling trend under the guidance of the tangential arc edge 17, thereby driving the torsional blades 13 to complete the rotation. The torsional blades 13 during the rotation process can drive the steam condensate filled in the spoiler 11 to form a vortex and fall downward from the bottom opening into the gathering bucket 14. In this process, not only can the steam condensate be driven to form a vortex through the continuously rotating torsional blades 13, but also a secondary vortex can be continuously formed from the bottom gathering hole 15 through the gathering bucket 14. The double vortex state can complete the rapid filtration of the steam condensate and form a dynamic filtration method, thereby impacting the accumulated resin at the bottom to prevent the accumulated resin from affecting the water filtration speed.

[0036] Embodiment 2: This embodiment is based on embodiment 1. It is aimed at the ion exchange process in the steam condensate recovery and liquid preparation process. It lacks monitoring of the operation status of the resin trap and cannot make an intuitive judgment on whether it is blocked. It includes a control panel embedded on the main tank body 1, and a control system is set in the control panel. The control system includes a recovery and transportation module, a liquid flow monitoring module and a circulation processing module that are connected to each other in communication;

[0037] The recovery and delivery module is used to obtain the liquid flow value YLz of the steam condensate of the production equipment within the time threshold, and the liquid flow value YLz includes the liquid level value YW in the resin catcher and the flow value LL entering the resin catcher, wherein: the liquid level value YW is measured by the liquid level sensor arranged inside the main tank body 1, and the flow value LL is measured by the flow sensor arranged at the water inlet pipe 2;

[0038] Constructing the calculation formula of liquid flow value YLz ,in > >0, and is the preset scale factor, is the preset fault tolerance factor, and >0; the calculated liquid flow value YLz is sent to the liquid flow monitoring module, and the liquid flow monitoring module receives the liquid flow value YLz and the preset liquid flow threshold YLYz for evaluation and analysis. The analysis process is as follows:

[0039] If the liquid flow value YLz> the liquid flow threshold value YLYz, it means that the steam condensate in the current resin trap is running "too fast", and a speed reduction signal is generated synchronously and sent to the circulation processing module. After receiving the speed reduction signal, the circulation processing module executes control to reduce the water inlet rate of the steam condensate through the water inlet pipe 2 per unit time, thereby reducing the flow rate of the steam condensate passing through the resin trap;

[0040] If the liquid flow value YLz is less than the liquid flow threshold value YLYz, it means that the steam condensate in the current resin trap is "blocked", and a speed-up signal is generated synchronously and sent to the circulation processing module. After receiving the speed-up signal, the circulation processing module executes control to increase the water inlet rate of the steam condensate through the water inlet pipe 2 per unit time, thereby increasing the flow rate of the steam condensate passing through the resin trap;

[0041] If the liquid flow value YLz = the liquid flow threshold YLYz, a maintenance signal is generated and no action is performed.

[0042] In this process, the liquid flow value is obtained by numerical calculation of the liquid level value and flow value within the real-time time threshold, and the liquid flow value is compared with the preset liquid flow threshold to form a speed reduction signal, a speed increase signal and a maintenance signal, and the steam condensate flow rate is reduced, the steam condensate flow rate is increased, and the unchanged action is performed per unit time respectively, to ensure that whether the resin trap is blocked during actual use is intuitively displayed and action guidance is provided, so as to form operational monitoring and control of the resin trap usage condition.

[0043] Embodiment 3: This embodiment combines the technical contents of Embodiment 1 and Embodiment 2 to form the following control scheme:

[0044] Step 1: The steam condensate enters the filter element 6 tangentially through the water inlet pipe 2, and then the steam condensate hits the tangential arc edge 17 at the bottom of the stepped sealing plate 7 under the tangential guidance, and again shows a vertical falling trend under the guidance of the tangential arc edge 17, driving the twisting blade 13 to complete the rotation;

[0045] Step 2: The twisted blades 13 during the rotation process can drive the steam condensate filled in the spoiler 11 to form a vortex and fall downward from the bottom opening into the gathering bucket 14. The gathering bucket 14 continuously forms a secondary vortex from the bottom gathering hole 15. The double vortex state can complete the rapid filtration of the steam condensate and form dynamic filtration;

[0046] Step 3: In step 1 and step 2, the operation monitoring system is used to simultaneously complete the operation monitoring of the resin trap, so as to intuitively judge whether it is blocked, and to provide online treatment guidance for the resin in the steam condensate based on the blockage situation, so as to improve the filtrate passing efficiency.

[0047] In summary: In combination with Example 1 and Example 2, on the one hand, the double vortex structure in the process of resin capture by steam condensate is used to achieve a dynamic filtration mode for steam condensate and achieve rapid filtration, avoiding the situation where resin accumulation at the bottom affects the water filtration speed. On the other hand, a control system is arranged during the resin capture process to provide guiding actions for whether it is blocked, and the above-mentioned double vortex water filtration structure is used to complete the stable filtration of steam condensate. The two together achieve the smooth operation of steam condensate, and further form the normal operation of the recovery and liquid distribution circulation system.

[0048] The above formulas are obtained by collecting a large amount of data for software simulation and selecting a formula that is close to the actual value. The coefficients in the formula are set by technical personnel in this field according to actual conditions. The above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited to this. Any technical personnel familiar with the technical field within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, make equivalent replacement or change, which should be covered within the protection scope of the present invention.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only specific implementation methods.

Claims

1. A system for recycling and dispensing steam condensate, comprising a main tank (1) arranged on an outlet pipeline of an ion exchanger, wherein a control panel is embedded in the main tank (1), characterized in that: Inside the main tank body (1), a filter element body (6) is suspended in the middle. The upper and lower ends of the filter element body (6) are provided with stepped structures in a staggered manner, and a stepped sealing plate (7) is installed inside the filter element body (6) through the inner side of the stepped structure. The bottom side of the stepped sealing plate (7) is connected with a horizontal sealing plate (16) that cooperates with the upper and lower end openings of the filter element body (6). At the inner edge of the stepped sealing plate (7), a tangential arc edge (17) in the shape of a quarter circle is provided; a water inlet pipe (2) is tangentially and penetratingly arranged at the top of the main tank body (1) corresponding to the filter element body (6). Inside the upper end of the filter element body (6), a flow disturbing cover (11) and an aggregation hopper (14) are sequentially arranged. Inside the flow disturbing cover (11), a torsion paddle (13) covering the top opening is horizontally rotatably arranged.

2. A steam condensate recovery and liquid preparation recycling system according to claim 1, characterized in that: The filter element body (6) is composed of a plurality of annular bodies with a "C" - shaped cross - section stacked together, and there is a gap between the outer ring side of the filter element body (6) and the inner wall of the main tank body (1).

3. A steam condensate recovery and liquid preparation recycling system according to claim 2, characterized in that: The filter element body (6) is made by welding stainless - steel trapezoidal wire materials and support ribs distributed in a circumferential array, and the sieve pore gaps of the filter element body (6) are in a "V" shape.

4. The system for recycling and utilizing steam condensate according to claim 1, characterized in that: The top of the main tank body (1) is flange - connected to an upper tank body (5), and in the middle of the upper end of the upper tank body (5), a water outlet pipe (3) for discharging condensate is provided.

5. The system for recycling and utilizing steam condensate according to claim 1, characterized in that: An aggregation hole (15) is provided at the bottom of the aggregation hopper (14). The bottom of the aggregation hopper (14) is connected with a resin discharge pipe (8) through the aggregation hole (15). The bottom opening of the main tank body (1) is installed with a lower discharge pipe (4), and a maintenance plug (9) inserted into the lower discharge pipe (4) is installed at the bottom of the resin discharge pipe (8).

6. The system for recycling and utilizing steam condensate according to claim 1, characterized in that: An installation frame (12) is inserted inside the top opening of the flow disturbing cover (11), and the torsion paddle (13) is connected to the middle position at the bottom of the installation frame (12) through a middle rotating shaft.

7. The system for recycling and utilizing steam condensate according to claim 1, characterized in that: A middle discharge pipe (10) is horizontally installed on the upper side of the main tank body (1) corresponding to the bottom horizontal sealing plate (16). A plurality of exhaust branch pipes (18) are symmetrically installed outside the end of the middle discharge pipe (10) extending into the filter element body (6). Exhaust holes communicating with the middle discharge pipe (10) are provided at the bottom of the exhaust branch pipes (18).

8. The system for recycling and utilizing steam condensate according to claim 1, characterized in that: A control system is arranged inside the control panel. The control system includes a recovery and transportation module, a liquid flow monitoring module, and a circulation processing module that are communicatively connected; The recovery and transportation module is used to obtain the liquid flow value YLz of the steam condensate of the production equipment within a time threshold. The liquid flow value YLz includes the liquid level value YW in the resin catcher and the flow value LL entering the resin catcher, and sends the liquid flow value YLz to the liquid flow monitoring module. The liquid flow monitoring module receives the liquid flow value YLz and evaluates and analyzes it with a preset liquid flow threshold YLYz. The analysis process is as follows: If the liquid flow value YLz > the liquid flow threshold YLYz, a deceleration signal is generated and sent to the circulation processing module to execute an action; If the liquid flow value YLz < the liquid flow threshold YLYz, an acceleration signal is generated and sent to the circulation processing module to execute an action; If the liquid flow value YLz = the liquid flow threshold YLYz, a maintenance signal is generated and no action is executed.

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