High enthalpy continuous wastewater recovery, purification and conditioning system and method

Abstract

The present invention relates to the technical field of waste heat recovery and utilization, and discloses a high enthalpy continuous wastewater recovery, purification and conditioning system and method, characterized in that it includes a wastewater pipeline, a steam pipeline, a mixing pipeline, a recovery pipeline, a venturi mixing injection pipe and a purification and conditioning box; the venturi mixing injection pipe includes an inner ring inlet, an outer ring inlet and an injection outlet, the wastewater pipeline is connected to the inner ring inlet, and the steam pipeline is connected to the outer ring inlet; the purification and conditioning box includes an air intake end, a coarse screen section, a fine filter section, a fine filter section and an exhaust end connected in sequence from left to right, the air intake end is connected to the injection outlet through the mixing pipeline, and the exhaust end is connected to the recovery pipeline. The system structure of the present invention is reasonably arranged, which simplifies the cumbersome steps such as installation, operation and maintenance, maximizes the recovery of waste heat, improves the system operation efficiency, and reduces the operation cost.

Description

Technical Field

[0001] The invention relates to the technical field of waste heat recovery and utilization, and in particular to a system and method for recovering, purifying and tempering high-enthalpy continuous wastewater. Background Art

[0002] In order to ensure the steam quality of the waste heat boiler during normal operation, it is necessary to continuously discharge saturated water from the part with the highest salt and alkali concentration in the drum to reduce the salt and alkali content, silicate content and suspended slag in the drum. This part of the discharged water has the characteristics of high temperature and high pressure, and contains extremely high thermal energy. If it is discharged directly, it will cause energy waste and may even affect the ecological environment.

[0003] The continuous discharge of wastewater from waste heat boilers accounts for 1%-2% of the capacity of waste heat boilers. The existing method for treating continuous discharge of wastewater usually uses a continuous expansion tank to flash the wastewater into a steam-water mixture, part of which can be reused by a deaerator. However, due to the high salt content of the wastewater, the steam formed by this treatment method is also mixed with a lot of impurities, the steam quality is not high, and it will also pose a huge threat to the heat exchange surface, and its application scope is limited; and only about 30% of the continuous discharge of wastewater can be used by this method, and nearly 70% of the discharge of wastewater is discharged, resulting in a large amount of heat energy and water loss.

[0004] The biggest drawback of continuous wastewater discharge from the drum of waste heat boilers is that it contains many impurities and high salt content, making it difficult to use. Existing recycling technologies either cannot fully recycle heat and mass resources, such as deaerators that can usually only recycle 30% of wastewater; or they cannot cope with the difficulties of many impurities, high salt content, and severe corrosion. For example, if heat is exchanged using a heat exchanger, the heat exchange surface will inevitably come into contact with high-salt, high-temperature wastewater, causing irreparable corrosion damage. The existing high-temperature steam filtration devices on the market are also prone to clogging during operation, have a short service life, and require cumbersome replacement procedures. Not only is the purification efficiency low, but the operating and maintenance costs are also high. Summary of the invention

[0005] The purpose of the present invention is to design a high-enthalpy continuous wastewater recovery and purification system with long service life and high purification efficiency.

[0006] In order to achieve the above-mentioned object, the present invention provides a high enthalpy continuous wastewater recovery, purification and conditioning system, comprising a wastewater pipeline, a steam pipeline, a mixing pipeline, a recovery pipeline, a venturi mixing injection pipe and a purification and conditioning box;

[0007] The Venturi mixing injection pipe includes an inner ring inlet, an outer ring inlet and an injection outlet, the wastewater pipeline is connected to the inner ring inlet, and the steam pipeline is connected to the outer ring inlet;

[0008] The purification and conditioning box includes an air inlet end, a coarse screen section, a fine filter section, a fine filter section and an exhaust end, the air inlet end is connected to the injection outlet through the mixing pipeline, the exhaust end is connected to the recovery pipeline, and the air inlet end, the coarse screen section, the fine filter section, the fine filter section and the exhaust end are connected in sequence from left to right to form a filtering airway;

[0009] The coarse screening section is provided with a screen plate for screening out impurities and salt, the fine filtering section is provided with an adsorbent for filtering salt particles; and the fine filtering section is provided with an adsorption filter tube for adsorbing residual salt ions and powder.

[0010] Preferably, the coarse screen section is provided with a drawer, the drawer is slidably connected to the coarse screen section, a plurality of Z-shaped sieve plates are arranged on the drawer, each of the sieve plates is arranged perpendicular to the flow direction of the filter air duct, and each of the sieve plates is overlapped in sequence head to tail in the flow direction of the filter air duct.

[0011] Preferably, the fine filter section includes a frame arranged on the inner circumferential wall and a plurality of vertical rafters arranged on the frame, the vertical rafters are spaced apart and clamped with the frame, a plurality of adsorption members are arranged and clamped on each vertical rafter, two adjacent adsorption members are arranged in contact with each other, and a side of the adsorption member facing away from the vertical rafter faces the coarse screen section.

[0012] Preferably, the adsorption member has a microporous structure, and a surface of the adsorption member facing the coarse screen section is in an outwardly convex cone shape.

[0013] Preferably, the fine filtration segment array is arranged with a plurality of the adsorption filter tubes, and the axial direction of each of the adsorption filter tubes is the same as the flow direction of the filtration airway.

[0014] Preferably, a Laval nozzle is provided at the inner ring inlet of the Venturi mixing injection pipe.

[0015] Preferably, the coarse screen section and the fine filter section, and the fine filter section and the fine filter section are connected by flanges, the purification and conditioning box is provided with a through hole for personnel to enter and exit, the through hole is provided with a cover plate adapted to the through hole, and the cover plate is detachably connected to the purification and conditioning box.

[0016] Preferably, flushing holes for spraying water to clean the interior are provided on the peripheral walls of the coarse screening section, the fine filtering section and the fine filtering section, and a sewage outlet is provided at the bottom of the purification and conditioning box.

[0017] Preferably, it comprises two purification and conditioning boxes, one end of the mixing pipeline is connected to the injection outlet, and the other end of the mixing pipeline is provided with a first branch, a second branch and a third branch, the first branch and the second branch are respectively connected to the air inlet ends of the two purification and conditioning boxes, and the third branch is connected to the recovery pipeline; the wastewater pipeline, the steam pipeline, the first branch, the second branch and the third branch are all provided with solenoid valves.

[0018] The present invention also provides a method for recycling, purifying and tempering high enthalpy continuous wastewater, comprising the following steps:

[0019] S1 passes high enthalpy continuous discharge wastewater from the wastewater pipeline into the inner circle inlet of the Venturi mixing injection tube, and passes high-temperature steam from the steam pipeline into the outer circle inlet of the Venturi mixing injection tube. The wastewater is fully mixed with the high-temperature steam in the Venturi mixing injection tube through the Laval nozzle, and then heated and vaporized into mixed steam;

[0020] The S2 mixed steam is sprayed from the Venturi mixing injection pipe into the air inlet end of the purification and conditioning box through the mixing pipe, and then passes through the first-level coarse screen, the second-level fine filter, and the third-level fine filter in sequence before entering the recovery pipeline from the exhaust end to obtain high-quality clean steam.

[0021] Compared with the prior art, the high enthalpy continuous wastewater recovery, purification and conditioning system of the embodiment of the present invention has the following beneficial effects:

[0022] The high enthalpy continuous wastewater recovery, purification and conditioning system of the embodiment of the present invention uses a venturi mixing injection tube to reduce the pressure and increase the temperature of the continuous sewage wastewater during the mixing process with high-temperature steam, so that the salt dissolved in the aqueous solution is separated into fine particles, and then more than 97.0wt.% of impurities are removed through the purification and conditioning box to obtain clean, high-utilization-value mixed steam. The purification and conditioning box is divided into coarse screening, fine filtration and fine filtration, which have the characteristics of complementary effects. Step-by-step purification can also extend the effective working time and life of the purification and conditioning box. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a purification flow chart of a high enthalpy continuous wastewater recovery, purification and conditioning system according to an embodiment of the present invention;

[0024] Figure 2 It is an axonometric diagram of a Venturi mixing and injection pipe in a high enthalpy continuous wastewater recovery, purification and conditioning system according to an embodiment of the present invention;

[0025] Figure 3 It is an axonometric view of a Laval nozzle on a Venturi mixing injection pipe in a high enthalpy continuous wastewater recovery, purification and tempering system in an embodiment of the present invention;

[0026] Figure 4It is an axonometric diagram of a purification and conditioning box in a high enthalpy continuous wastewater recovery, purification and conditioning system according to an embodiment of the present invention;

[0027] Figure 5 It is a front view of a purification and conditioning box in the high enthalpy continuous wastewater recovery, purification and conditioning system according to an embodiment of the present invention;

[0028] Figure 6 It is a top view of a drawer of a purification and conditioning box in a high enthalpy continuous wastewater recovery, purification and conditioning system in an embodiment of the present invention;

[0029] Figure 7 It is an axonometric diagram of a drawer of a purification and conditioning box in a high enthalpy continuous wastewater recovery, purification and conditioning system in an embodiment of the present invention;

[0030] Figure 8 It is an axonometric diagram of a sieve plate of a purification and conditioning box in a high enthalpy continuous wastewater recovery, purification and conditioning system in an embodiment of the present invention;

[0031] Fig. 9 It is an axonometric view of the installation position of the adsorbent in the fine filter section of the purification and conditioning box in the high enthalpy continuous wastewater recovery, purification and conditioning system according to an embodiment of the present invention;

[0032] Fig.10 It is an enlarged view of the adsorbent in the fine filter section of the purification and conditioning box in the high enthalpy continuous wastewater recovery, purification and conditioning system according to an embodiment of the present invention;

[0033] Fig.11 It is an axonometric diagram of the inner frame of the fine filter section of the purification and conditioning box in the high enthalpy continuous wastewater recovery, purification and conditioning system according to an embodiment of the present invention;

[0034] Fig.12 It is an axonometric diagram of the vertical rafters in the fine filter section of the purification and conditioning box in the high enthalpy continuous wastewater recovery, purification and conditioning system according to an embodiment of the present invention;

[0035] Fig.13 It is an axonometric diagram of the fine filtration section of the purification and conditioning box in the high enthalpy continuous wastewater recovery, purification and conditioning system according to an embodiment of the present invention.

[0036] In the figure, 1. wastewater pipeline; 2. steam pipeline; 3. Venturi mixing injection pipe; 31. inner circle inlet; 311. Laval nozzle; 32. outer circle inlet; 33. injection outlet; 4. mixing pipeline; 5. purification and conditioning box; 51. air inlet end; 52. coarse screen section; 521. sieve plate; 522. drawer; 53. fine filter section; 531. adsorption element; 532. frame; 533. vertical rafter; 54. fine filter section; 541. adsorption filter tube; 55. exhaust end; 56. through hole; 57. cover plate; 58. flushing hole; 59. sewage outlet; 6. recovery pipeline; 7. solenoid valve. DETAILED DESCRIPTION

[0037] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" used in the present invention to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In the description of the present invention, it should be understood that the terms "connected", "connected", "fixed" and the like used in the present invention should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a welding connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] like Figure 1 As shown, a high enthalpy continuous wastewater recovery, purification and conditioning system according to a preferred embodiment of the present invention comprises a wastewater pipeline, a steam pipeline, a mixing pipeline, a recovery pipeline, a venturi mixing injection pipe and a purification and conditioning box;

[0041] like Figure 2 As shown, the Venturi mixing injection pipe includes an inner ring inlet, an outer ring inlet and an injection outlet, the wastewater pipeline is connected to the inner ring inlet, and the steam pipeline is connected to the outer ring inlet;

[0042] like Figure 3 As shown, the purification and conditioning box includes an air inlet end, a coarse screen section, a fine filter section, a fine filter section and an exhaust end, the air inlet end is connected with the injection outlet through the mixing pipeline, the exhaust end is connected with the recovery pipeline, and the air inlet end, the coarse screen section, the fine filter section, the fine filter section and the exhaust end are connected in sequence from left to right to define a filtering airway;

[0043] The coarse screening section is provided with a screen plate for screening out impurities and salt, the fine filtering section is provided with an adsorbent for filtering salt particles; and the fine filtering section is provided with an adsorption filter tube for adsorbing residual salt ions and powder.

[0044] The wastewater pipeline of the waste heat boiler flows into the Venturi mixing ejector at a high speed, and is fully mixed with the high-temperature steam entering from the steam pipeline in the mixing chamber of the Venturi mixing ejector. The high-temperature steam here can be selected from the high-grade heat source steam of the main steam, or it can be the steam extracted from the steam turbine. The wastewater is completely vaporized and the enthalpy value increases under the heating of the high-temperature steam, becoming a mixed steam with recycling value. The impurities such as salt, alkali, silicate, calcium and magnesium ions originally dissolved in the wastewater are precipitated as fine powder and mixed in the mixed steam. After the mixed steam is accelerated in the Venturi mixing ejector, it is sprayed into the purification and conditioning box to filter and remove the mineral salt powder. The purification and conditioning box consists of three steps: coarse screening, fine filtration, and fine filtration. The purification and conditioning effects complement each other, and can remove more than 97.0wt.% of the mineral salts in the mixed steam, becoming clean steam with high utilization value. The size selection of the Venturi mixing ejector is determined after computer software simulation to ensure that the steam is fully mixed and the state parameters meet the requirements.

[0045] Further, such as Figure 6 , Figure 7 and Figure 8 As shown, the coarse screen section is inserted with a drawer, and the drawer is slidably connected to the coarse screen section. A plurality of Z-shaped sieve plates are arranged on the drawer, and each sieve plate is arranged perpendicular to the flow direction of the filter airway, and each sieve plate is overlapped in sequence in the flow direction of the filter airway. The high temperature and impact resistant sieve plates are vertically inserted in the drawer, and the Z-shaped sieve plates are densely arranged with each other, which can not only effectively screen out a part of the salt particles, but also provide a passage for the steam flow, reduce the impact pressure on the drawer and the sieve plate, help reduce the use loss, and extend the service life of the sieve plate. The drawer can be flexibly pulled out and pushed in from the purification and conditioning box, and a handle is designed at the outer end of the drawer for easy operation. The drawer and the purification and conditioning box adopt a "convex and concave" nested seal, which can not only realize flexible pushing and pulling, but also ensure the sealing of the conditioning box. After the drawer is pulled out, the Z-shaped sieve plate can be easily replaced or daily cleaning and maintenance operations can be performed. The lower part of the drawer is hollowed out so that the mineral salt particles separated by the steam passing through the sieve plate can fall to the bottom of the box without blocking the gaps between the sieve plates.

[0046] Further, such as Fig. 9 , Fig.11 and Fig.12 As shown, the fine filter section includes a frame arranged on the inner wall and a plurality of vertical rafters arranged on the frame, the vertical rafters are arranged at intervals and are all clamped with the frame, and a plurality of adsorption members are arranged and clamped on each vertical rafter, and two adjacent adsorption members are arranged in contact with each other, and the side of the adsorption member facing away from the vertical rafter faces the coarse screen section.

[0047] The filter device of the fine filter section consists of a frame, vertical rafters, and adsorbents. The frame is the base of the integrated vertical rafters, and T-shaped grooves are designed at the upper and lower ends of the inner side of the frame so that the vertical rafters can be perfectly embedded. The frame assembly can be composed of two or more frames arranged in parallel up and down to enhance the impact resistance of the vertical rafters. At the same time, this flexible combination makes it easy to install, disassemble, replace, repair, clean and maintain the fine filter section. The vertical rafter is a support rod with a T-shaped cross-section. There is an inverted T-shaped groove on the back of the adsorbent, which allows the adsorbent and the vertical rafter to be firmly nested together and withstand the impact of high-pressure steam without displacement or deformation. The adsorbent can filter out smaller salt particles.

[0048] Furthermore, the adsorbent has a microporous structure, and the side of the adsorbent facing the coarse screen section is in an outwardly convex cone. The adsorbent can be made of zeolite and special additives fired according to a certain formula and a unique process, and has the performance of high temperature and high pressure resistance. Its microporous structure can ensure the normal passage of steam while intercepting salt particles on the surface of the adsorbent. When the surface of the adsorbent is conical, it can increase the contact area between the mixed steam and the adsorbent, improve the filtration efficiency, and at the same time, the inclined design is conducive to the salt particles falling to the bottom of the conditioning box, avoiding blockage due to long-term work and reducing the filtration effect.

[0049] Furthermore, the fine filter section array is arranged with a plurality of the adsorption filter tubes, and the axial direction of each adsorption filter tube is the same as the flow direction of the filter airway. The filter element in the adsorption filter tube can be an amino-composite nanomaterial, which can achieve efficient adsorption of residual salt ions and powders in the mixed steam. The adsorption filter tubes are densely arranged in the fine filter section of the purification and conditioning box, which plays the role of the final control of the steam quality. The coarse screening section and fine filter section in front can effectively avoid the clogging of the filter element in the fine filter section, improve the working state, and improve the working efficiency. The mixed steam that has been purified and conditioned has met the heating requirements and can be directly supplied to the heating network or heat users.

[0050] Furthermore, a Laval nozzle is provided at the inner ring inlet of the Venturi mixing injection pipe, and the Laval nozzle further accelerates the wastewater so that it is better mixed with the high-temperature steam.

[0051] Furthermore, the coarse screening section and the fine filtering section, as well as the fine filtering section and the fine filtering section, are connected via flanges. A through hole is provided on the purification and conditioning box for personnel to enter and exit. A cover plate adapted to the through hole is provided on the through hole, and the cover plate is detachably connected to the purification and conditioning box. The flange connection allows the purification and conditioning box to be disassembled into various small components, which facilitates its production and manufacturing, maintenance and parts replacement during use, and the combined form also simplifies the installation and transportation process. The through hole allows staff to enter the box to replace components and perform maintenance and repairs without disassembling it, reducing workload and difficulty of operation. In addition, the purification and conditioning box is a heat storage device that needs to have good thermal insulation performance. Avoiding frequent disassembly can protect its integrity and thermal insulation performance.

[0052] Furthermore, flushing holes for spraying water to clean the inside are provided on the peripheral walls of the coarse screen section, the fine filter section and the fine filter section, and a sewage outlet is provided at the bottom of the purification and conditioning box. Water can be used to flush the entire purification and conditioning box through the flushing holes, and the impurities on the sieve plate and the adsorbent are flushed to the bottom of the box body and discharged from the sewage outlet. Daily cleaning operations can be carried out without disassembly and without using the through holes, which simplifies daily cleaning and maintenance, helps to improve the working efficiency of the purification and conditioning box, and prolongs its service life.

[0053] Furthermore, it includes two purification and conditioning boxes, one end of the mixing pipeline is connected to the injection outlet, and the other end of the mixing pipeline is provided with a first branch, a second branch and a third branch, the first branch and the second branch are respectively connected to the air inlet ends of the two purification and conditioning boxes, and the third branch is connected to the recovery pipeline; the wastewater pipeline, the steam pipeline, the first branch, the second branch and the third branch are all provided with solenoid valves. The two purification and conditioning boxes can be switched for use when they need to be shut down for maintenance to ensure uninterrupted production, and the third branch does not pass through the purification and conditioning box and is used to handle emergencies.

[0054] A method for recycling, purifying and conditioning high enthalpy continuous wastewater according to a preferred embodiment of the present invention comprises the following steps:

[0055] S1 passes high enthalpy continuous discharge wastewater from the wastewater pipeline into the inner circle inlet of the Venturi mixing injection tube, and passes high-temperature steam from the steam pipeline into the outer circle inlet of the Venturi mixing injection tube. The wastewater is fully mixed with the high-temperature steam in the Venturi mixing injection tube through the Laval nozzle, and then heated and vaporized into mixed steam;

[0056] The S2 mixed steam is sprayed from the Venturi mixing injection pipe into the air inlet end of the purification and conditioning box through the mixing pipe, and then passes through the first-level coarse screen, the second-level fine filter, and the third-level fine filter in sequence before entering the recovery pipeline from the exhaust end to obtain high-quality clean steam.

[0057] The method can achieve a salt particle filtration efficiency of wastewater mixed steam of ≥97.0wt.%, and a comprehensive utilization rate of heat and mass resources of ≥99.0wt.%.

[0058] In summary, the embodiment of the present invention provides a high-enthalpy continuous wastewater recovery, purification, conditioning and reuse system and method thereof, in which high-temperature steam and continuous sewage wastewater can be fully mixed and completely vaporized in the venturi mixing injection pipe, and then injected into the purification conditioning box for step-by-step targeted adjustment through coarse screening, fine filtration and fine filtration, and finally clean steam with high utilization value is obtained. The system structure is reasonably set up, which simplifies the tedious steps such as installation, operation and maintenance, maximizes the recovery of waste heat, improves the system operation efficiency and reduces the operation cost.

[0059] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A high enthalpy continuous wastewater recovery, purification and conditioning system, characterized in that: Including wastewater pipeline, steam pipeline, mixing pipeline, recovery pipeline, Venturi mixing injection pipe and purification and conditioning box; The Venturi mixing injection pipe includes an inner ring inlet, an outer ring inlet and an injection outlet, the wastewater pipeline is connected to the inner ring inlet, and the steam pipeline is connected to the outer ring inlet; The purification and conditioning box includes an air inlet end, a coarse screen section, a fine filter section, a fine filter section and an exhaust end, the air inlet end is connected to the injection outlet through the mixing pipeline, the exhaust end is connected to the recovery pipeline, and the air inlet end, the coarse screen section, the fine filter section, the fine filter section and the exhaust end are connected in sequence from left to right to form a filtering airway; The coarse screening section is provided with a screen plate for screening out impurities and salt, the fine filtering section is provided with an adsorbent for filtering salt particles; the fine filtering section is provided with an adsorption filter tube for adsorbing residual salt ions and powder; The coarse screen section is inserted with a drawer, the drawer is slidably connected to the coarse screen section, a plurality of Z-shaped sieve plates are arranged on the drawer, each of the sieve plates is arranged perpendicular to the flow direction of the filter air passage, and each of the sieve plates is overlapped in sequence head to tail in the flow direction of the filter air passage; The inner circle inlet of the Venturi mixing injection pipe is provided with a Laval nozzle.

2. The high enthalpy continuous wastewater recovery, purification and conditioning system according to claim 1 is characterized in that: The fine filter section includes a frame arranged on the inner wall and a plurality of vertical rafters arranged on the frame, the vertical rafters are arranged at intervals and are all clamped with the frame, and a plurality of adsorption members are arranged and clamped on each vertical rafter, and two adjacent adsorption members are arranged in contact with each other, and a side of the adsorption member facing away from the vertical rafter faces the coarse screen section.

3. The high enthalpy continuous wastewater recovery, purification and conditioning system according to claim 2 is characterized in that: The adsorption member has a microporous structure, and a surface of the adsorption member facing the coarse screen section is in an outwardly convex cone shape.

4. The high enthalpy continuous wastewater recovery, purification and conditioning system according to claim 1 is characterized in that: The fine filtration section array is arranged with a plurality of the adsorption filter tubes, and the axial direction of each of the adsorption filter tubes is the same as the flow direction of the filtration airway.

5. The high enthalpy continuous wastewater recovery, purification and conditioning system according to claim 1 is characterized in that: The coarse screening section and the fine filtering section as well as the fine filtering section and the fine filtering section are connected via flanges; a through hole for personnel to enter and exit is provided on the purification and conditioning box; a cover plate adapted to the through hole is provided on the through hole; and the cover plate is detachably connected to the purification and conditioning box.

6. The high enthalpy continuous wastewater recovery, purification and conditioning system according to claim 1 is characterized in that: The peripheral walls of the coarse screening section, the fine filtering section and the fine filtering section are all provided with flushing holes for spraying water to clean the inside, and the bottom of the purification and conditioning box is provided with a sewage outlet.

7. The high enthalpy continuous wastewater recovery, purification and conditioning system according to claim 1 is characterized in that: It comprises two purification and conditioning boxes, one end of the mixing pipeline is connected with the injection outlet, the other end of the mixing pipeline is provided with a first branch, a second branch and a third branch, the first branch and the second branch are respectively connected with the air inlet ends of the two purification and conditioning boxes, and the third branch is connected to the recovery pipeline; the wastewater pipeline, the steam pipeline, the first branch, the second branch and the third branch are all provided with solenoid valves.

8. A method for recycling, purifying and conditioning high enthalpy continuous wastewater, used in a high enthalpy continuous wastewater recycling, purifying and conditioning system as claimed in any one of claims 1 to 7, characterized in that: The steps include: S1: The high enthalpy continuous discharge wastewater enters the inner circle inlet of the Venturi mixing injection tube from the wastewater pipeline, and the high-temperature steam enters the outer circle inlet of the Venturi mixing injection tube from the steam pipeline. The wastewater is fully mixed with the high-temperature steam in the Venturi mixing injection tube through the Laval nozzle and then heated and vaporized into mixed steam; S2 mixed steam is sprayed from the Venturi mixing injection pipe into the air inlet end of the purification conditioning box through the mixing pipe, and then passes through the first-level coarse screen, the second-level fine filter, and the third-level fine filter in sequence before entering the recovery pipeline from the exhaust end to obtain high-quality clean steam.

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