CN116002792A - Method and device for fully recovering phase-change thermal mass of high-temperature wastewater - Google Patents
Method and device for fully recovering phase-change thermal mass of high-temperature wastewater Download PDFInfo
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- CN116002792A CN116002792A CN202211614413.XA CN202211614413A CN116002792A CN 116002792 A CN116002792 A CN 116002792A CN 202211614413 A CN202211614413 A CN 202211614413A CN 116002792 A CN116002792 A CN 116002792A
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Abstract
The invention provides a method and a device for fully recovering phase-change thermal mass of high-temperature wastewater, wherein the method comprises the following steps: s1, introducing high-temperature wastewater and high-temperature steam into a phase-change device from the upper end of the vertically arranged phase-change device, so that the high-temperature wastewater is heated by the high-temperature steam to be phase-changed into superheated steam in the downward flowing process, and soluble ions and impurities in the high-temperature wastewater are separated out to form crystallization particles with different sizes; s2, enabling superheated steam carrying crystalline particles to flow out of the lower end of the phase-change device and enter the filter from the lower end of the vertically arranged filter, enabling the superheated steam carrying crystalline particles to be filtered through the filter in the upward flowing process to obtain pure steam and crystalline particles, wherein the pure steam flows out of the upper end of the filter, and the crystalline particles flow out of the bottom of the filter. The invention utilizes the phase change principle to change the phase of the high-temperature wastewater into the superheated steam, then carries out precise filtration to produce qualified steam, and can realize the full recovery of the working medium and the heat of the high-temperature wastewater.
Description
Technical Field
The invention belongs to the technical field of waste heat recovery, relates to waste heat recovery of high-temperature waste water, and particularly relates to a method and a device for fully recovering phase-change thermal mass of high-temperature waste water.
Background
High temperature wastewater (high temperature wastewater generally refers to wastewater higher than 100deg.C) is produced in industrial production, and contains various soluble ions (soluble ions including Na + 、K + 、Ca 2+ 、Mg 2+ 、Fe 3+ 、Cu 2+ 、Cl - 、SO 4 2- 、P 3 O 4 3- Etc.) and impurities (the impurities are mainly water slag (insoluble basic calcium phosphate, calcium carbonate and serpentine) and silica, magnesia, calcium oxide, etc.), cannot be directly utilized, if directly discharged, a great amount of secondary energy and water resources are lost, and heat pollution is generated to the environment.
At present, the recovery of high-temperature wastewater generally adopts the following three methods: 1. the flash evaporation technology is adopted for recovery, but the recovery rate is generally 5-25% affected by the operation of the system, and most of heat and working medium cannot be recovered; 2. the heat recovery rate can reach 50-70% by adopting a heat exchange technology, but the working medium cannot be recovered, and the technology is used by matching with a cold source, so that the use is limited; 3. the high-temperature wastewater power generation is carried out, the heat efficiency of the recovery mode is lower, the investment is large, the recovery period is long, and the working medium can not be recovered.
Disclosure of Invention
The invention provides a method and a device for fully recovering phase-change thermal mass of high-temperature wastewater, which are used for solving the technical problem that working medium and heat in the existing high-temperature wastewater recovery technology cannot be fully recovered.
The invention solves the technical problems by adopting a technical scheme that the invention provides a full recovery method of a phase-change thermal mass of high-temperature wastewater, which comprises the following steps:
s1, introducing high-temperature wastewater and high-temperature steam into a phase-change device from the upper end of the vertically arranged phase-change device, so that the high-temperature wastewater is heated by the high-temperature steam to be phase-changed into superheated steam in the downward flowing process, and soluble ions and impurities in the high-temperature wastewater are separated out to form crystallization particles with different sizes;
s2, enabling superheated steam carrying crystalline particles to flow out of the lower end of the phase-change device and enter the filter from the lower end of the vertically arranged filter, enabling the superheated steam carrying crystalline particles to be filtered through the filter in the upward flowing process to obtain pure steam and crystalline particles, wherein the pure steam flows out of the upper end of the filter, and the crystalline particles flow out of the bottom of the filter.
Optionally, the high-temperature steam is high-temperature steam with the temperature of more than 180 ℃.
Optionally, in step S2, a type i blocker, a type i crystal remover, a type ii crystal remover, a type i filter, and a type ii filter are sequentially disposed in the filter from bottom to top, to filter coarse crystal particles, fine crystal particles, and ultra-fine crystal particles in the superheated steam.
Optionally, the coarse crystal particles have a particle size of more than 500 μm, the coarse crystal particles have a particle size of more than 100 μm and less than or equal to 500 μm, the fine crystal particles have a particle size of more than 10 μm and less than or equal to 100 μm, the fine crystal particles have a particle size of more than 1 μm and less than or equal to 10 μm, and the ultra-fine crystal particles have a particle size of less than or equal to 1 μm.
The invention also provides a method for fully recovering the phase-change thermal mass of the high-temperature wastewater, which comprises the following steps:
s1, introducing high-temperature wastewater and high-temperature steam into a phase-change device from one end of the phase-change device which is horizontally arranged, so that the high-temperature wastewater is heated by the high-temperature steam to be phase-changed into superheated steam in the process of flowing to the other end, and simultaneously, soluble ions and impurities in the high-temperature wastewater are separated out to form crystallization particles with different sizes;
s2, enabling superheated steam carrying crystalline particles to flow out of the other end of the phase change device and enter the filter from one end of the horizontally arranged filter, enabling the superheated steam carrying crystalline particles to flow to the other end of the phase change device, and filtering the superheated steam to obtain pure steam and crystalline particles through the filter, wherein the pure steam flows out of the other end of the filter, and the crystalline particles flow out of the bottom of the filter.
Correspondingly, the invention provides a high-temperature wastewater phase-change thermal mass full recovery device, when the device is used for realizing the first high-temperature wastewater phase-change thermal mass full recovery method, the device comprises the following steps:
the phase-change device is vertically arranged, the upper end of the phase-change device is provided with a high-temperature wastewater inlet and a high-temperature steam inlet, the lower end of the phase-change device is provided with a superheated steam outlet, the phase-change device is used for enabling high-temperature wastewater entering the phase-change device to be heated by the high-temperature steam and changed into superheated steam in the downward flowing process, and meanwhile, soluble ions and impurities in the high-temperature wastewater are separated out to form crystalline particles with different sizes;
the filter is vertically arranged, the lower end of the filter is provided with a superheated steam inlet connected with a superheated steam outlet, the upper end of the filter is provided with a pure steam outlet, and the bottom of the filter is provided with a crystallized particle outlet;
when the device is used for the second high-temperature wastewater phase-change thermal mass full recovery method, the device comprises the following steps:
the phase-change device is horizontally arranged, one end of the phase-change device is provided with a high-temperature wastewater inlet and a high-temperature steam inlet, the other end of the phase-change device is provided with a superheated steam outlet, the phase-change device is used for enabling high-temperature wastewater entering the phase-change device to be heated by the high-temperature steam and changed into superheated steam in the process of flowing to the other end, and meanwhile soluble ions and impurities in the high-temperature wastewater are separated out to form crystalline particles with different sizes;
the filter is horizontally arranged, one end of the filter is provided with a superheated steam inlet connected with a superheated steam outlet, the other end of the filter is provided with a pure steam outlet, and the bottom of one end of the filter is provided with a crystallized particle outlet.
Optionally, the filter is a high-efficiency high-temperature precise crystal removal combiner, and comprises an I-type blocking device for blocking coarse crystal particles, an I-type crystal removal device for removing coarse crystal particles, an II-type crystal removal device for removing fine crystal particles, an I-type filter for filtering and blocking fine crystal particles and an II-type filter for precisely filtering ultra-fine crystal particles, which are sequentially arranged in series along the steam flow direction.
Optionally, the device further includes a first crystallization recovery bucket and a second crystallization recovery bucket, the first crystallization recovery bucket is installed at the outlet of the crystallization particles, and the second crystallization recovery bucket is arranged between the type I crystal remover and the type II crystal remover.
Optionally, a downward spraying flushing nozzle is arranged in the I-type blocking device and/or the I-type crystal remover.
Optionally, the device further comprises a parameter adjustment system, wherein the parameter adjustment system comprises a controller, a temperature reducing water injector and a first temperature detector which are arranged on the phase-change device, a first pressure detector which is arranged at the inlet of the filter, and a second temperature detector and a second pressure detector which are arranged at the outlet of the filter, and the controller controls the start and stop of the temperature reducing water injector according to the data detected by the first temperature detector, the first pressure detector, the second temperature detector and the second pressure detector and the preset parameters in the controller so that the steam parameters output by the filter meet the preset parameters.
The invention has the beneficial effects that: the invention provides a method and a device for fully recovering phase-change thermal mass of high-temperature wastewater, which are used for leading the high-temperature wastewater and the high-temperature steam into a phase-change device from top to bottom or along the horizontal direction, so that the high-temperature wastewater is heated into superheated steam in the downward flow or horizontal flow process, in the phase-change process of converting the wastewater from liquid state to vapor state, because the solubility of soluble ions in the vapor state is extremely reduced, the soluble ions contained in the high-temperature wastewater are separated out in the phase-change process, and under the crystallization principle, the processes of mutual attraction, aggregation, crystal nucleus formation and crystallization are rapidly completed, and because a plurality of ions and impurities with different sizes exist in the high-temperature wastewater, the soluble ions continuously interact in the crystallization process, the crystallization precipitation process of ions in the high-temperature wastewater is completed, the crystallization substances cannot develop into crystals with regular forms due to the limitation of space and crystallization time in the growth process, but only crystallize into grains, namely the grains, the directions and the positions of internal unit cells of the grains are basically consistent, the shapes of the grains are irregular, meanwhile, the crystallization substances are various, the crystals of various substances interact to form irregular combinations, namely crystallization particles, so that the crystals of soluble ions and impurities in the high-temperature wastewater in the phase change process are completed, and the superheated steam can flow downwards or horizontally to flow into the filter together with the crystallization particles; then let into the filter from filter bottom or along the horizontal direction with carrying the superheated steam of crystal, filter the crystallization granule in the superheated steam through the filter, add superheated steam again and upwards or horizontal flow, can make partial crystallization granule drop under the dead weight effect and steam separation, can further promote the filter effect, the pure steam after the filtration can carry out recycle, and the crystallization granule of filtering out can be collected, realizes working medium and heat and totally retrieve.
The invention utilizes the phase change principle to change the phase of the high-temperature wastewater into the superheated steam, then carries out precise filtration to produce qualified steam, and realizes the full recovery of the working medium and the heat of the high-temperature wastewater.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of a vertically arranged high temperature wastewater phase change thermal mass total recovery device;
FIG. 2 is a schematic structural diagram of a horizontally arranged high-temperature wastewater phase-change thermal mass full recovery device provided by the invention;
fig. 3 is a schematic structural view of a vapor recovery pipeline in an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality", "a number" or "a plurality" is two or more.
The following describes a method and a device for fully recovering phase-change thermal mass of high-temperature wastewater with reference to fig. 1-3.
As shown in FIG. 1, the invention provides a method for fully recovering phase-change thermal mass of high-temperature wastewater, which comprises the following steps:
s1, introducing high-temperature wastewater and high-temperature steam into the phase-change device 1 from the upper end of the vertically arranged phase-change device 1, so that the high-temperature wastewater is heated by the high-temperature steam to be phase-changed into superheated steam in the downward flowing process, and simultaneously, soluble ions and impurities in the high-temperature wastewater are separated out to form crystal particles with different sizes;
s2, enabling superheated steam carrying crystalline particles to flow out of the lower end of the phase-change device 1 and enter the filter 2 from the lower end of the vertically arranged filter 2, enabling the superheated steam carrying crystalline particles to be filtered through the filter in the upward flowing process to obtain pure steam and crystalline particles, wherein the pure steam flows out of the upper end of the filter, and the crystalline particles flow out of the bottom of the filter, so that separate recycling of the pure steam and the crystalline particles is achieved.
In one embodiment, the high-temperature steam is the high-temperature steam with the temperature of more than 180 ℃, the high-temperature steam with the temperature of more than 180 ℃ is used as a heat source to heat the high-temperature wastewater, and the high-temperature wastewater heating device has the advantages of high heating speed, high heat efficiency, simplicity in operation, no need of maintenance and the like, and the high-temperature steam and the high-temperature wastewater can be recycled together.
In one embodiment, as shown in fig. 1, in step S2, the type i blocker 9, the type i stripper 11, the type ii stripper 12, the type i filter 17 and the type ii filter 18 are sequentially disposed in the filter 2 from bottom to top, and coarse crystalline particles, fine crystalline particles and ultra-fine crystalline particles in the superheated steam are filtered, respectively. The invention can thoroughly remove crystalline particles through five-stage crystal removal, and ensure that the output is qualified pure steam. Specifically, the coarse crystal particles have a particle size of more than 500 μm, the coarse crystal particles have a particle size of more than 100 μm and not more than 500 μm, the fine crystal particles have a particle size of more than 10 μm and not more than 100 μm, the fine crystal particles have a particle size of more than 1 μm and not more than 10 μm, and the ultrafine crystal particles have a particle size of not more than 1 μm, and generally, the ultrafine crystal particles have a particle size of 0.2 μm to 1 μm. The crystallization particles are divided into 5 grades according to the particle size, and then are matched with a 5-grade filter for layer-by-layer filtration, so that the crystallization particles carried in the superheated steam can be thoroughly removed.
As shown in fig. 2, the invention also provides a method for fully recovering the phase-change thermal mass of the high-temperature wastewater, which comprises the following steps:
s1, introducing high-temperature wastewater and high-temperature steam into the phase-change device 1 from one end of the phase-change device 1 which is horizontally arranged, so that the high-temperature wastewater is heated by the high-temperature steam to be phase-changed into superheated steam in the process of flowing to the other end, and soluble ions and impurities in the high-temperature wastewater are separated out to form crystal particles with different sizes;
s2, enabling superheated steam carrying crystalline particles to flow out of the other end of the phase-change device 1 and enter the filter 2 from one end of the filter 2 which is horizontally arranged, and enabling the superheated steam carrying crystalline particles to be filtered through the filter in the process of flowing to the other end to obtain pure steam and crystalline particles, wherein the pure steam flows out of the other end of the filter, and the crystalline particles flow out of the bottom of the filter.
The phase change device and the filter can be vertically arranged or horizontally arranged according to the site conditions.
Correspondingly, the invention provides a high-temperature wastewater phase-change thermal mass full recovery device, when the device is used for realizing a first high-temperature wastewater phase-change thermal mass full recovery method, as shown in fig. 1, the device comprises:
the phase-change device 1 is vertically arranged, the upper end of the phase-change device is provided with a high-temperature wastewater inlet and a high-temperature steam inlet 8, the lower end of the phase-change device is provided with a superheated steam outlet, the phase-change device is used for enabling high-temperature wastewater entering the phase-change device to be heated by the high-temperature steam and changed into superheated steam in the downward flowing process, and meanwhile, soluble ions and impurities in the high-temperature wastewater are separated out to form crystalline particles with different sizes;
the filter 2 is vertically arranged, the lower end of the filter is provided with a superheated steam inlet connected with the superheated steam outlet, the upper end of the filter is provided with a pure steam outlet, and the bottom of the filter is provided with a crystallized particle outlet;
when the device is used in a second high temperature wastewater phase change thermal mass total recovery method, as shown in fig. 2, the device comprises:
the phase change device 1 is horizontally arranged, one end of the phase change device 1 is provided with a high-temperature wastewater inlet and a high-temperature steam inlet 8, the other end of the phase change device is provided with a superheated steam outlet, the phase change device is used for enabling high-temperature wastewater entering the phase change device to be heated by the high-temperature steam and changed into superheated steam in the process of flowing to the other end, and meanwhile, soluble ions and impurities in the high-temperature wastewater are separated out to form crystalline particles with different sizes;
the filter 2 is horizontally arranged, one end of the filter is provided with a superheated steam inlet connected with a superheated steam outlet, the other end of the filter is provided with a pure steam outlet, and the bottom of one end of the filter is provided with a crystallized particle outlet.
Wherein, high temperature waste water ejector 6 can be installed to high temperature waste water entrance, and high temperature waste water is spouted in the phase change device by high temperature waste water ejector 6, and high temperature steam lets in the phase change device by high temperature steam entry 8, and pure steam outlet can be connected with vapor recovery pipeline 27, and crystallization granule exit can set up crystallization recovery bucket.
In one embodiment, as shown in fig. 1 and 2, the filter is a high-efficiency high-temperature precise crystal removal combiner, which comprises a type i blocker 9 for blocking coarse crystal particles, a type i crystal remover 11 for removing coarse crystal particles, a type ii crystal remover 12 for removing fine crystal particles, a type i filter 17 for filtering blocking fine crystal particles, and a type ii filter 18 for precise filtering ultra-fine crystal particles, which are sequentially arranged in series along the flow direction of steam.
In particular, the type I dam may be designed as a multi-layered net structure with macropore material filled between the layers of net; the I-type crystal remover can be designed into a mechanical crystal removing structure, comprises groove-type crystal removers which are arranged in staggered mode, and performs mechanical crystal removal by utilizing a collision energy absorption principle; the II-type crystal remover can be designed into an inertial crystal removing structure, and spiral crystal removal is performed by utilizing the inertia of crystal particles in impurity-containing steam; the I-type filter can be designed into a pore type adsorption filtering structure and is formed by compounding multiple layers of metals and carbon-based nano materials; the II type filter can be a precise filtering membrane group, and can be a microporous filter formed by a plurality of layers of metal grids and sintered materials.
In one embodiment, as shown in fig. 1 and 2, the apparatus further comprises a first crystallization recovery bucket 15 and a second crystallization recovery bucket 13, wherein the first crystallization recovery bucket is installed at the outlet of the crystallized particles, and the second crystallization recovery bucket is arranged between the type i crystal remover and the type ii crystal remover. Preferably, the second crystal dust hopper is connected to the first crystal dust hopper by a dust conveying pipe 14.
When the filter is arranged vertically, the first crystallization recovery bucket is arranged below the I-type blocking device, the second crystallization recovery bucket is arranged below the II-type crystal remover, and when the filter is arranged horizontally, the first crystallization recovery bucket is arranged below the I-type blocking device and the I-type crystal remover, and the second crystallization recovery bucket is arranged below the II-type crystal remover. Coarse crystal particles blocked by the I-type blocking device and coarse crystal particles removed by the I-type crystal remover fall into the first crystal dust hopper, fine crystal particles removed by the II-type crystal remover fall into the second crystal dust hopper, and the coarse crystal particles and the fine crystal particles can be collected into the first crystal dust hopper through the dust conveying pipe.
In one embodiment, as shown in fig. 1 and 2, a downward spraying flushing nozzle 10 is arranged in the type I blocking device and/or the type I crystal remover, so that flushing can be performed when the type I blocking device and the type I crystal remover are scaled.
In one embodiment, as shown in fig. 1 and 2, the device further comprises a parameter adjustment system, which comprises a controller, a temperature reducing water injector 7 and a first temperature detector 29 which are arranged on the phase change device, a first pressure detector 25 which is arranged at the inlet of the filter, and a second temperature detector 21 and a second pressure detector 20 which are arranged at the outlet of the filter, wherein the controller controls the start and stop of the temperature reducing water injector according to the data detected by the first temperature detector, the first pressure detector, the second temperature detector and the second pressure detector and the preset parameters inside the controller, so that the steam parameters output by the filter meet the preset parameters.
As shown in fig. 3, the steam recovery pipe 27 can also be connected with an external steam pipe 32, and the qualified steam flowing out from the filter can also be mixed with the steam in the external steam pipe according to the outlet requirement and adjusted to the required parameters.
The working process of the invention is further described by taking a vertical filter as an example. As shown in fig. 1, the phase-change device 1 is connected in series with the filter 2 and the vapor recovery pipeline 27, the bottom of the phase-change device is supported by the support legs 26, the phase-change device 1 is fixedly connected with the high-efficiency high-temperature precise crystal-removing combiner 2 through the first connecting flange 4, the top of the high-efficiency high-temperature precise crystal-removing combiner 2 is fixedly connected with the end cover 28 through the third connecting flange 30, and the end cover 28 is fixedly connected with the vapor recovery pipeline 27 through the second connecting flange 5.
During operation, high-temperature wastewater enters the phase changer 1 through the high-temperature wastewater ejector 6, is mixed with superheated steam entering through the steam interface 8 to generate phase change, is converted into vapor phase from liquid phase, is vaporized into impurity-containing superheated steam after being mixed, enters the high-efficiency high-temperature precise crystal removal combiner 2 through the impurity-containing superheated steam, the superheated steam firstly passes through the I-type blocking device 9 to block coarse crystal particles carried by the steam, the blocked crystal particles fall into the first crystal dust hopper 15, the superheated steam passes through the I-type crystal remover 11 to remove coarse crystal particles carried by the steam, the removed coarse crystal particles also fall into the first crystal dust hopper 15, the superheated steam passes through the II-type crystal remover 12 to remove fine crystal particles carried by the steam, the removed fine crystal particles fall into the first crystal dust hopper 15 through the dust conveying pipe 14 after being collected, the superheated steam continues to enter the I-type filter 17, the filtered blocking fine crystal particles are filtered through the II-type filter 18 to perform precise filtration, the qualified steam after being filtered enters the steam recovery pipeline, and the qualified steam can be adjusted into required steam parameters for industrial production or heating.
As shown in fig. 1 and 2, the invention can also be provided with a back flushing port 19 at the top of the filter, and when the pressure difference between the inlet and the outlet reaches a set value, back flushing is performed by the back flushing port 19. The filter can also be provided with a drain outlet 3, an overhaul population 16, a steam exhaust hole 22, a standby hole 23, a safety valve 24 and the like.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the various embodiments of the invention, which should be set forth in the following claims.
Claims (10)
1. The full recovery method of the phase change thermal mass of the high-temperature wastewater is characterized by comprising the following steps of:
s1, introducing high-temperature wastewater and high-temperature steam into a phase-change device from the upper end of the vertically arranged phase-change device, so that the high-temperature wastewater is heated by the high-temperature steam to be phase-changed into superheated steam in the downward flowing process, and soluble ions and impurities in the high-temperature wastewater are separated out to form crystallization particles with different sizes;
s2, enabling superheated steam carrying crystalline particles to flow out of the lower end of the phase-change device and enter the filter from the lower end of the vertically arranged filter, enabling the superheated steam carrying crystalline particles to be filtered through the filter in the upward flowing process to obtain pure steam and crystalline particles, wherein the pure steam flows out of the upper end of the filter, and the crystalline particles flow out of the bottom of the filter.
2. The method for fully recovering phase-change thermal mass of high-temperature wastewater according to claim 1, wherein the high-temperature steam is high-temperature steam with the temperature of more than 180 ℃.
3. The method for fully recovering the phase-change thermal mass of the high-temperature wastewater according to claim 1, wherein in the step S2, a type i stopper, a type i crystal remover, a type ii crystal remover, a type i filter and a type ii filter are sequentially arranged in the filter from bottom to top, and coarse crystal particles, fine crystal particles and ultrafine crystal particles in the superheated steam are filtered respectively.
4. The method according to claim 3, wherein the coarse crystal particles have a particle size of 500 μm or more, the coarse crystal particles have a particle size of 100 μm or more and 500 μm or less, the fine crystal particles have a particle size of 10 μm or more and 100 μm or less, the fine crystal particles have a particle size of 1 μm or more and 10 μm or less, and the ultrafine crystal particles have a particle size of 1 μm or less.
5. The full recovery method of the phase change thermal mass of the high-temperature wastewater is characterized by comprising the following steps of:
s1, introducing high-temperature wastewater and high-temperature steam into a phase-change device from one end of the phase-change device which is horizontally arranged, so that the high-temperature wastewater is heated by the high-temperature steam to be phase-changed into superheated steam in the process of flowing to the other end, and simultaneously, soluble ions and impurities in the high-temperature wastewater are separated out to form crystallization particles with different sizes;
s2, enabling superheated steam carrying crystalline particles to flow out of the other end of the phase change device and enter the filter from one end of the horizontally arranged filter, enabling the superheated steam carrying crystalline particles to flow to the other end of the phase change device, and filtering the superheated steam to obtain pure steam and crystalline particles through the filter, wherein the pure steam flows out of the other end of the filter, and the crystalline particles flow out of the bottom of the filter.
6. A high temperature wastewater phase change thermal mass total recovery apparatus, when used to implement the high temperature wastewater phase change thermal mass total recovery method of any one of claims 1-4, comprising:
the phase-change device is vertically arranged, the upper end of the phase-change device is provided with a high-temperature wastewater inlet and a high-temperature steam inlet, the lower end of the phase-change device is provided with a superheated steam outlet, the phase-change device is used for enabling high-temperature wastewater entering the phase-change device to be heated by the high-temperature steam and changed into superheated steam in the downward flowing process, and meanwhile, soluble ions and impurities in the high-temperature wastewater are separated out to form crystalline particles with different sizes;
the filter is vertically arranged, the lower end of the filter is provided with a superheated steam inlet connected with a superheated steam outlet, the upper end of the filter is provided with a pure steam outlet, and the bottom of the filter is provided with a crystallized particle outlet;
when the device is used for realizing the high-temperature wastewater phase-change thermal mass full recovery method as claimed in claim 5, the device comprises:
the phase-change device is horizontally arranged, one end of the phase-change device is provided with a high-temperature wastewater inlet and a high-temperature steam inlet, the other end of the phase-change device is provided with a superheated steam outlet, the phase-change device is used for enabling high-temperature wastewater entering the phase-change device to be heated by the high-temperature steam and changed into superheated steam in the process of flowing to the other end, and meanwhile soluble ions and impurities in the high-temperature wastewater are separated out to form crystalline particles with different sizes;
the filter is horizontally arranged, one end of the filter is provided with a superheated steam inlet connected with a superheated steam outlet, the other end of the filter is provided with a pure steam outlet, and the bottom of one end of the filter is provided with a crystallized particle outlet.
7. The device for fully recovering the phase-change thermal mass of the high-temperature wastewater according to claim 6, wherein the filter is a high-efficiency high-temperature precise crystal removal combiner, and comprises a type I blocking device for blocking coarse crystal particles, a type I crystal removal device for removing coarse crystal particles, a type II crystal removal device for removing fine crystal particles, a type I filter for filtering blocking fine crystal particles and a type II filter for precisely filtering ultra-fine crystal particles, which are sequentially arranged in series along the steam flow direction.
8. The apparatus of claim 7 further comprising a first crystallization recovery bucket and a second crystallization recovery bucket, the first crystallization recovery bucket mounted at the exit of the crystallized particles, the second crystallization recovery bucket disposed between the type i and type ii descalers.
9. The device for fully recovering the phase-change thermal mass of the high-temperature wastewater according to claim 7, wherein a downward-spraying flushing nozzle is arranged in the I-type blocking device and/or the I-type crystal remover.
10. The device of claim 6, further comprising a parameter adjustment system, wherein the parameter adjustment system comprises a controller, a temperature-reducing water injector and a first temperature detector mounted on the phase-change device, a first pressure detector mounted at the inlet of the filter, a second temperature detector and a second pressure detector mounted at the outlet of the filter, and the controller controls the start and stop of the temperature-reducing water injector according to the data detected by the first temperature detector, the first pressure detector, the second temperature detector and the second pressure detector and the preset parameters inside the temperature-reducing water injector so that the steam parameters output by the filter meet the preset parameters.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105018671A (en) * | 2014-04-30 | 2015-11-04 | 天津大强钢铁有限公司 | Steel making dust removal device |
| CN105276691A (en) * | 2014-05-28 | 2016-01-27 | 江苏海怡利尔环保科技有限公司 | Indoor plasma air purifier |
| CN208109546U (en) * | 2018-05-11 | 2018-11-16 | 南京师范大学 | A kind of front end filter device for sulfur trioxide in flue gas control condensation method sampling |
| CN212640011U (en) * | 2020-07-02 | 2021-03-02 | 青岛伊西欧普节能新技术有限公司 | Pickle waste water evaporation crystallization energy cyclic utilization device |
| CN112850994A (en) * | 2020-12-31 | 2021-05-28 | 绍兴广通节能环保科技有限公司 | Desulfurization waste water purifies retrieves system of recycling |
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2022
- 2022-12-15 CN CN202211614413.XA patent/CN116002792A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105018671A (en) * | 2014-04-30 | 2015-11-04 | 天津大强钢铁有限公司 | Steel making dust removal device |
| CN105276691A (en) * | 2014-05-28 | 2016-01-27 | 江苏海怡利尔环保科技有限公司 | Indoor plasma air purifier |
| CN208109546U (en) * | 2018-05-11 | 2018-11-16 | 南京师范大学 | A kind of front end filter device for sulfur trioxide in flue gas control condensation method sampling |
| CN212640011U (en) * | 2020-07-02 | 2021-03-02 | 青岛伊西欧普节能新技术有限公司 | Pickle waste water evaporation crystallization energy cyclic utilization device |
| CN112850994A (en) * | 2020-12-31 | 2021-05-28 | 绍兴广通节能环保科技有限公司 | Desulfurization waste water purifies retrieves system of recycling |
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