阅读说明：本技术 为泥质物干燥蒸汽凝汽器除垢的三相流化床清污器及具有其的三相流化床清污器单元 (Three-phase fluidized bed dirt cleaner for descaling mud drying steam condenser and three-phase fluidized bed dirt cleaner unit with three-phase fluidized bed dirt cleaner ) 是由 张绪祎 杨海瑞 邵海杰 于 2020-12-07 设计创作，主要内容包括：本发明公开了一种为泥质物干燥蒸汽凝汽器除垢的三相流化床清污器及具有其的三相流化床清污器单元,三相流化床清污器包括三相流化床清污装置和列管式凝汽器,三相流化床清污装置内设有固体颗粒和水,其底部设有流化空气入口和排污口；列管式凝汽器的下端与三相流化床清污装置的上端相连,列管式凝汽器内设有列管,列管内通有冷却水,列管式凝汽器上设有泥质物干燥蒸汽入口、流化用水注入口、凝结水出口、未凝气出口和流化空气出口。采用该清污器对冷凝泥质物干燥蒸汽的凝汽器进行简单易行的清污,一方面可以有效回收泥质物干燥后的待冷凝气体中的水资源和热量,大幅度减少需处置污水量；再一方面,解决了现有间接换热器沾污结垢不便清理的难题。(The invention discloses a three-phase fluidized bed dirt cleaner for descaling a sludge drying steam condenser and a three-phase fluidized bed dirt cleaner unit with the three-phase fluidized bed dirt cleaner, wherein the three-phase fluidized bed dirt cleaner comprises a three-phase fluidized bed dirt cleaning device and a tubular condenser, solid particles and water are arranged in the three-phase fluidized bed dirt cleaning device, and a fluidized air inlet and a drain outlet are formed in the bottom of the three-phase fluidized bed dirt cleaning device; the lower end of the tubular condenser is connected with the upper end of the three-phase fluidized bed sewage disposal device, a tubular is arranged in the tubular condenser, cooling water is introduced into the tubular, and the tubular condenser is provided with a muddy matter drying steam inlet, a fluidizing water injection port, a condensed water outlet, an uncondensed gas outlet and a fluidized air outlet. The condenser for condensing the sludge dry steam is simply and easily cleaned by adopting the dirt cleaner, so that on one hand, water resources and heat in the sludge dry gas to be condensed can be effectively recovered, and the amount of sewage to be treated is greatly reduced; on the other hand, the problem that the existing indirect heat exchanger is inconvenient to clean and has the stain and scale is solved.)

1. A three-phase fluidized bed dirt separator for descaling a sludge drying steam condenser is characterized by comprising:

the three-phase fluidized bed sewage disposal device is internally provided with solid particles and water, and the bottom of the three-phase fluidized bed sewage disposal device is provided with a fluidized air inlet and a sewage discharge outlet;

the lower end of the shell and tube condenser is connected with the upper end of the three-phase fluidized bed cleaning device, a shell and tube is arranged in the shell and tube condenser, cooling water is filled in the shell and tube condenser, and a sludge drying steam inlet, a fluidizing water filling opening, a condensed water outlet, an uncondensed gas outlet and a fluidizing air outlet are formed in the shell and tube condenser.

2. The trash remover as claimed in claim 1, wherein the tubular condenser comprises a heat exchange region and a return region from top to bottom, a baffle extending from top to bottom is arranged in the heat exchange region, the baffle divides the heat exchange region into a first heat exchange sub-region and a second heat exchange sub-region, the first heat exchange sub-region comprises an air intake region and a downstream heat exchange sub-region from top to bottom, the second heat exchange sub-region comprises an upstream heat exchange region and an exhaust region from bottom to top, the air intake region is provided with the argillaceous drying steam inlet, the fluidized bed water inlet and the fluidized air outlet, the downstream heat exchange region and the upstream heat exchange region are both provided with the plurality of tubes, the exhaust region is provided with the non-condensable gas outlet and the fluidized air outlet, and the condensed water outlet is arranged in the return region.

3. The dirt separator of claim 2, wherein the sludge drying steam inlet and the uncondensed gas outlet are disposed on opposite sides of the shell and tube condenser.

4. The trash remover as claimed in claim 1, wherein the shell and tube condenser comprises, from top to bottom, an air intake zone, a heat transfer zone and an air exhaust zone, the sludge drying steam inlet, the fluidizing water injection port and the fluidizing air outlet are provided in the air intake zone, the heat transfer zone is provided with a plurality of the tubes, and the noncondensable gas outlet and the condensed water outlet are provided in the air exhaust zone.

5. The cleaner according to claim 1, wherein the solid particles are hard particles having a particle size of 0.2 to 1.5 mm.

6. A three-phase fluidized bed scrubber unit, comprising: at least two of the cleaners according to any one of claims 1-5.

7. The trash remover unit of claim 6, further comprising: and the control device is connected with the instrument and/or an actuating mechanism part of each trash remover.

8. The cleaner unit according to claim 7, wherein each of said cleaners has a control valve for each of said fluidizing water injection port, said sludge drying steam inlet, said uncondensed gas outlet, said fluidizing air outlet, said condensed water outlet, said fluidizing air inlet, and said blowdown port, said control means being connected to each of said control valves.

Technical Field

The invention belongs to the field of sludge drying steam condenser dirt cleaning equipment, and particularly relates to a three-phase fluidized bed dirt cleaner for removing dirt of a sludge drying steam condenser and a three-phase fluidized bed dirt cleaner unit with the three-phase fluidized bed dirt cleaner.

Background

Various sludge materials need to be dried, such as domestic sludge, coal slime, red mud and the like. The steam generated by drying the sludge is not pure, the sludge contains dust particles, organic matters and the like, and the domestic sludge steam also has strong peculiar smell and toxic gas components. The harmless steam is often directly discharged, and the harmful steam is mostly directly condensed by spraying to reduce the gas disposal quantity. However, the treatment mode changes clean cold water with the amount of tens of times of steam into warm sewage, increases the water treatment burden, and simultaneously, if the steam contains gases which are not easy to condense, the gases carry more fog drops and fine dust, thereby bringing difficulty to subsequent treatment. The steam generated by drying is indirectly condensed, so that heat and water resources can be recovered, and even if the condensed water is still sewage, the subsequent treatment amount is much smaller. Because the saturated partial pressure of steam at 80-90 ℃ is very low, the condensation heat exchange coefficient is very high, the condensing equipment is very compact, and the availability of the generated hot water is very good. However, the surface of the heat exchange tube is very easy to be polluted, and the heat transfer effect is deteriorated due to the pollution and the scaling. The cleaning equipment with good performance is the key to the fact whether steam generated by drying the sludge can recover heat by using a condenser and simplify the subsequent water treatment process.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention aims to provide a three-phase fluidized bed cleaner for descaling a sludge drying steam condenser and a three-phase fluidized bed cleaner unit with the three-phase fluidized bed cleaner, wherein the cleaner is used for simply and easily cleaning the condenser for condensing sludge drying steam, so that on one hand, water resources and heat in gas to be condensed after sludge drying can be effectively recovered, and the amount of sewage to be treated is greatly reduced; on the other hand, the problem that the existing indirect heat exchanger is inconvenient to clean and has the stain and scale is solved.

In one aspect of the invention, a three-phase fluidized bed dirt separator for descaling a sludge drying steam condenser is provided. According to an embodiment of the present invention, the trash remover includes:

the three-phase fluidized bed sewage disposal device is internally provided with solid particles and water, and the bottom of the three-phase fluidized bed sewage disposal device is provided with a fluidized air inlet and a sewage discharge outlet;

the lower end of the shell and tube condenser is connected with the upper end of the three-phase fluidized bed cleaning device, a shell and tube is arranged in the shell and tube condenser, cooling water is filled in the shell and tube condenser, and a sludge drying steam inlet, a fluidizing water filling opening, a condensed water outlet, an uncondensed gas outlet and a fluidizing air outlet are formed in the shell and tube condenser.

The three-phase fluidized bed dirt cleaning device for cleaning the sludge drying steam condenser comprises a three-phase fluidized bed dirt cleaning device and a tubular condenser, wherein the three-phase fluidized bed dirt cleaning device is arranged below the tubular condenser. When the cleanliness of the tubes in the tube array condenser does not need to be cleaned, the solid particles and water in the three-phase fluidized bed cleaning device are in a static state, the tube array condenser is in a condensed steam state, the sludge dry steam enters from a sludge dry steam inlet arranged on the tube array condenser and is cooled by cooling water in the tubes to be condensed, the condensed water is discharged from a condensed water outlet on the tube array condenser, and the uncondensed gas is discharged from an uncondensed gas outlet on the tube array condenser; when the cleaning degree of the tubes in the tube array condenser needs to be cleaned, a dry steam inlet of the sludge is closed, water is injected through a fluidizing water injection port on the tube array condenser, the water level is higher than the uppermost tube array of the tube array condenser, the injected water and solid particles in the three-phase fluidized bed cleaning device are in a fluidized state under the drive of blown fluidizing air, dirt on the surfaces of the tubes in the tube array condenser is removed through the friction of the solid particles on the dirt, and the fluidizing air is discharged from a fluidizing air outlet on the tube array condenser. And after the sewage is cleaned, closing the fluidized air inlet, gradually settling solid particles, and opening a condensed water outlet to discharge water for immersing the tubes in the tube array condenser, so that the tube array condenser is switched to a condensed state. After repeated times, the particles settled in the three-phase fluidized bed cleaning device can carry dirt and need to be discharged, cleaned and replaced regularly. Therefore, the condenser for condensing the sludge drying steam is simply and easily cleaned by adopting the dirt cleaner, on one hand, water resources and heat in the to-be-condensed gas after the sludge is dried can be effectively recovered, and the amount of sewage to be treated is greatly reduced; on the other hand, the problem that the existing indirect heat exchanger is inconvenient to clean and has the stain and scale is solved.

In addition, the three-phase fluidized bed cleaner for descaling the sludge dry steam condenser according to the above embodiment of the invention may further have the following additional technical features:

in some embodiments of the present invention, the shell and tube condenser includes, from top to bottom, a heat exchange region and a return region, a baffle extending from top to bottom is disposed in the heat exchange region, the baffle divides the heat exchange region into a first sub heat exchange region and a second sub heat exchange region, the first sub heat exchange region includes, from top to bottom, an air intake region and a downstream heat exchange region, the second sub heat exchange region includes, from bottom to top, an upstream heat exchange region and an exhaust region, the air intake region is provided with the argillaceous drying steam inlet, the fluidized bed water injection port and the fluidized air outlet, the downstream heat exchange region and the upstream heat exchange region are both provided with the plurality of tubes, the exhaust region is provided with the non-condensable gas outlet and the fluidized air outlet, and the condensed water outlet is disposed in the return region.

In some embodiments of the invention, the sludge drying steam inlet and the uncondensed gas outlet are disposed on opposite sides of the shell and tube condenser.

In some embodiments of the present invention, the shell and tube condenser includes, from top to bottom, an air intake zone, a heat exchange zone, and an air exhaust zone, the sludge drying steam inlet, the fluidizing water injection port, and the fluidizing air outlet are disposed in the air intake zone, the heat exchange zone is provided with a plurality of the tubes, and the uncondensed gas outlet and the condensed water outlet are disposed in the air exhaust zone.

In some embodiments of the present invention, the solid particles are hard particles having a particle size of 0.2 to 1.5 mm.

In a second aspect of the invention, a three-phase fluidized bed purger unit is presented. According to an embodiment of the invention, the purge unit comprises at least two purgers as described above. Therefore, at least two trash removers are adopted, at least one trash remover conducts condensation heat exchange, at least one other trash remover conducts trash removal, and then the state is switched at fixed intervals, so that continuous treatment of gas to be condensed is achieved.

In addition, the three-phase fluidized bed dirt remover unit according to the above embodiment of the present invention may also have the following additional technical features:

in some embodiments of the present invention, the above-mentioned trash remover unit further comprises: and the control device is connected with the instrument and/or an actuating mechanism part of each trash remover. Thereby, the automation level of the cleaner unit can be improved.

In some embodiments of the invention, each of the purgers has a control valve at the fluidization water injection port, the muddy material drying steam inlet, the uncondensed gas outlet, the fluidizing air outlet, the condensed water outlet, the fluidizing air inlet and the blowdown port, and the control device is connected to each of the control valves. Thereby, the automation level of the cleaner unit can be improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a cross-sectional view in one direction of a three-phase fluidized bed dirt separator in a condensed state for decontaminating a sludge drying steam condenser according to one embodiment of the present invention;

FIG. 2 is a cross-sectional view in one direction of a three-phase fluidized bed dirt separator in a condensed state for decontaminating a sludge drying steam condenser, according to another embodiment of the present invention;

FIG. 3 is a cross-sectional view of a three-phase fluidized bed dirt separator for scrubbing a sludge drying steam condenser in another orientation while in a condensed steam condition according to one embodiment of the present invention;

FIG. 4 is a cross-sectional view in one direction of a three-phase fluidized bed cleaner for decontaminating a sludge drying steam condenser, according to one embodiment of the present invention, in a cleaning state;

FIG. 5 is a cross-sectional view in one direction of a three-phase fluidized bed dirt separator in a condensed state for decontaminating a sludge drying steam condenser, according to another embodiment of the present invention;

FIG. 6 is a cross-sectional view in another direction of a three-phase fluidized bed dirt separator in a condensed state for decontaminating a sludge drying steam condenser, according to another embodiment of the present invention;

FIG. 7 is a cross-sectional view in one direction of a three-phase fluidized bed cleaner for decontaminating a sludge dry steam condenser, according to another embodiment of the present invention, in a cleaning state;

FIG. 8 is a schematic structural view of a three-phase fluidized bed cleaner unit according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In one aspect of the invention, a three-phase fluidized bed cleaner for decontaminating a sludge drying steam condenser is provided. According to an embodiment of the present invention, referring to fig. 1, the scrubber 1000 includes a shell and tube condenser 100 and a three-phase fluidized bed scrubber 200.

According to an embodiment of the present invention, referring to fig. 1, a tube array 10 is provided in a tube array condenser 100, cooling water is introduced into the tube array 10, and a sludge dry steam inlet 101, a fluidizing water injection port 102, a condensed water outlet 103, an uncondensed gas outlet 104, and a fluidizing air outlet 105 are provided in the tube array condenser 100. It should be noted that, a person skilled in the art can select specific positions of the sludge drying steam inlet 101 and the uncondensed gas outlet 104 on the tubular condenser 100 according to actual needs, for example, the sludge drying steam inlet 101 is arranged at the top end of the tubular condenser 100, and the uncondensed gas outlet 104 is arranged at the lower end of the side wall of the tubular condenser 100; for example, the dry steam inlet 101 is provided at the lower end of the upper side wall of the shell and tube condenser 100, the uncondensed gas outlet 104 is provided at the top end of the shell and tube condenser 100, or both the sludge dry steam inlet 101 and the uncondensed gas outlet 104 are provided at the top end of the shell and tube condenser 100.

According to an embodiment of the present invention, referring to fig. 1, the upper end of the three-phase fluidized bed cleaning apparatus 200 is connected to the lower end of the shell and tube condenser 100, and the three-phase fluidized bed cleaning apparatus 200 is provided with solid particles 21 and water therein, and the bottom thereof is provided with a fluidized air inlet 201 and a sewage outlet 202. Preferably, the solid particles 21 in the three-phase fluidized bed cleaning device 200 are hard particles with a particle size of 0.2-1.5 mm, so that the removal efficiency of the dirt on the tubes 10 can be improved. It should be noted that, a person skilled in the art can select the specific type of the hard particles according to actual needs, as long as effective removal of the dirt on the tubes 10 in the tube type condenser 100 can be achieved.

Specifically, when the cleaning degree of the tubes 10 in the tube condenser 100 does not need to be cleaned, the solid particles 21 and water in the three-phase fluidized bed cleaning device 200 are both in a static state, the tube condenser 100 is in a condensed state, the sludge dry steam enters from a sludge dry steam inlet 101 arranged on the tube condenser 100 and is cooled by cooling water in the tubes 10 to be condensed, the condensed water is discharged from a condensed water outlet 103 on the tube condenser 100, and the uncondensed gas is discharged from an uncondensed gas outlet 104 on the tube condenser 100; when the cleaning degree of the tubes 10 in the tube array condenser 100 needs to be cleaned, the muddy material dry steam inlet 101 is closed, water is injected through the fluidization water injection port 102 on the tube array condenser 100, the water level is higher than the uppermost tube array 10 of the tube array condenser 100, the injected water and the solid particles 21 in the three-phase fluidized bed cleaning device 200 are both in a fluidized state under the driving of the blown fluidization air, the dirt on the surfaces of the tubes 10 in the tube array condenser 100 is removed through the friction of the solid particles 21 on the dirt, and the fluidization air is discharged from the fluidization air outlet 105 on the tube array condenser 100. After the cleaning is finished, the fluidized air inlet 201 is closed, the solid particles 21 gradually settle, and the condensed water outlet 103 is opened, so that the water for immersing the tubes 10 in the tube array type condenser 100 is discharged, and the tube array type condenser 100 is switched to a condensed state. After repeated times, the particles settled in the three-phase fluidized bed cleaning device 200 carry dirt and need to be discharged, cleaned and replaced regularly.

For clarity, the shell and tube condenser 100 according to an embodiment of the present invention will be described in detail with reference to fig. 2 to 4.

According to an embodiment of the present invention, referring to fig. 2 to 4, the tubular condenser 100 includes a heat exchange region 11 and a return region 12 from top to bottom, a baffle 13 extending from top to bottom is disposed in the heat exchange region 11, the baffle 13 divides the heat exchange region 11 into a first heat exchange sub-region 14 and a second heat exchange sub-region 15, the first heat exchange sub-region 14 includes an air intake region 16 and a downward heat exchange region 17 from top to bottom, the second heat exchange sub-region 15 includes an upward heat exchange region 18 and an exhaust region 19 from bottom to top, the air intake region 16 is provided with a sludge drying steam inlet 101, a fluidizing water injection inlet 102 and a fluidizing air outlet 105, the downward heat exchange region 17 and the upward heat exchange region 18 are both provided with a plurality of tubular columns 10, the exhaust region 19 is provided with an uncondensed gas outlet 104 and a fluidizing air outlet 105, and the return region 12 is.

Specifically, referring to fig. 2 and 3, when the shell and tube condenser 100 is in a condensed state, the fluidization water injection port 102 and the fluidization air outlet 105 are closed, the muddy material dry steam inlet 101, the non-condensed gas outlet 104 and the condensed water outlet 103 are opened, muddy material dry steam is supplied from the muddy material dry steam inlet 101 to the air intake zone 16, the muddy material dry steam contacts and exchanges heat with the tubes 10 in the downstream heat exchange zone 17 which are supplied with cooling water, and then is turned back and upwards through the turn-back zone 12 to contact and exchange heat with the tubes 10 in the upstream heat exchange zone 18 which are supplied with cooling water, steam in the muddy material dry steam condenses into water and falls into the three-phase fluidized bed cleaning device 200, and is discharged through the condensed water outlet 103, the non-condensed gas contained in the muddy material dry steam sequentially passes through the air intake zone 16, the downstream heat exchange zone 17, the turn-back zone 12, the upstream heat exchange zone 18 and the exhaust zone 19 and then is discharged from the non-condensed gas outlet 104 arranged in the exhaust zone 19, meanwhile, in the heat exchange process of the muddy material drying steam and the tubes 10, the muddy dirt carried in the muddy material drying steam is adhered to the tubes 10. Referring to fig. 4, when the cleaning degree of the tubes 10 in the tube type condenser 100 needs to be cleaned, the dry steam inlet 101, the non-condensed gas outlet 104 and the condensed water outlet 103 on the tube type condenser 100 are closed, the fluidizing water injection port 102, the fluidizing air outlet 105 and the fluidizing air inlet 201 on the fluidized bed cleaner 200 on the tube type condenser 100 are opened, i.e. the water is injected into the tube type condenser 100 and the three-phase fluidized bed cleaner 200 through the fluidizing water injection port 102 so that the water level exceeds the uppermost tube 10 in the upper heat transfer zone 18 and the lower heat transfer zone 17, then the fluidizing air is supplied into the three-phase fluidized bed cleaner 200 through the fluidizing air inlet 201, under the blowing of the fluidizing air, the liquid drives the solid particles 21 in the three-phase fluidized bed cleaner 200 to make strong turbulence, and because the upper heat transfer zone 18 and the lower heat transfer zone 17 are filled with water, therefore, the gas-liquid-solid three phases clean the tubes 10 in the upper heat exchange area 18 and the lower heat exchange area 17, the water can make the friction of the solid particles 21 on the surfaces of the tubes 10 more moderate, after the cleaning is finished, the fluidized air inlet 201 is closed, the particles are gradually settled, and then the condensed water outlet 103 is opened to discharge the sewage. After multiple uses, the solid particles in the three-phase fluidized bed cleaning device 200 can be reduced and carry the dirt, and the dirt discharge port 202 on the three-phase fluidized bed cleaning device 200 is opened to discharge the dirt and renew the solid particles.

Preferably, referring to fig. 2, the sludge drying steam inlet 101 and the uncondensed gas outlet 104 are disposed on opposite sides of the tubular condenser 100, that is, the uncondensed gas contained in the sludge drying steam flows on the gas (steam) side in a double return stroke, that is, initially enters from one side of the upper portion of the gas inlet region 16, sequentially passes through the gas inlet region 16 and the downward heat transfer region 17 from top to bottom, enters the turn-back region 12, is turned back, sequentially passes through the upward heat transfer region 18 and the exhaust region 19 from bottom to top, and the uncondensed gas is led out from the other side of the upper portion of the exhaust region 19, so that the retention time of the sludge drying steam in the tubular condenser 100 is increased, and the water yield and the heat recovery rate therein are significantly increased. Further, each tube row 10 is arranged in the horizontal direction, and a plurality of tube rows 10 are arranged at intervals in the height direction of the tube row condenser 100, and the condensed water outlet 103 is provided at the lower end of the side wall of the turn-back region 12.

For clarity, the shell and tube condenser 100 according to another embodiment of the present invention will be described in detail with reference to fig. 5 to 7.

According to the embodiment of the invention, the tubular condenser 100 comprises an air inlet area 11, a heat exchange area 12 and an air outlet area 13 from top to bottom, a muddy material drying steam inlet 101, a fluidizing water injection port 102 and a fluidizing air outlet 105 are arranged in the air inlet area 11, the heat exchange area 12 is provided with a plurality of tubes 10, and an uncondensed gas outlet 104 and a condensed water outlet 103 are arranged in the air outlet area 13.

Specifically, referring to fig. 5 and 6, when the shell and tube condenser 100 is in a condensed steam state, the fluidization water injection port 102 and the fluidization air outlet 105 are closed, the muddy material dry steam inlet 101, the non-condensed gas outlet 104 and the condensed water outlet 103 are opened, muddy material dry steam is supplied from the muddy material dry steam inlet 101 to the air intake zone 11, the muddy material dry steam descends to contact with the shell and tube 10 which is supplied with cooling water in the heat exchange zone 12 for heat exchange, steam in the muddy material dry steam is condensed into water and falls into the three-phase fluidized bed cleaning device 200, and then is discharged through the condensed water outlet 103, non-condensed gas contained in the muddy material dry steam is discharged through the non-condensed gas outlet 104 on the exhaust zone 13, and simultaneously, during the heat exchange process of the muddy material dry steam and the shell and tube 10, the muddy dirt carried in the muddy material dry steam is adhered to the shell and tube 10. Referring to fig. 7, when the cleaning degree of the tubes 10 in the tube type condenser 100 needs to be cleaned, the dry steam inlet 101, the non-condensed gas outlet 104 and the condensed water outlet 103 on the tube type condenser 100 are closed, the fluidizing water injection port 102, the fluidizing air outlet 105 and the fluidizing air inlet 201 on the fluidized bed cleaner 200 on the tube type condenser 100 are opened, i.e., the water is injected into the tube type condenser 100 and the three-phase fluidized bed cleaner 200 through the fluidizing water injection port 102 so that the water level exceeds the uppermost tube 10 in the heat transfer zone 12, then the fluidizing air is supplied into the three-phase fluidized bed cleaner 200 through the fluidizing air inlet 201, the liquid drives the solid particles 21 in the three-phase fluidized bed cleaner 200 to make strong turbulence under the blast of the fluidizing air, and the tubes 10 in the heat transfer zone 12 are cleaned by the gas-liquid-solid three-phase because the heat transfer zone 12 is filled with water, and the water can make the friction of the solid particles 21 on the surface of the tube 10 more moderate, after the cleaning is finished, the fluidizing air inlet 201 is closed, the particles are gradually settled, and then the condensed water outlet 103 is opened to discharge the sewage. After multiple uses, the solid particles in the three-phase fluidized bed cleaning device 200 can be reduced and carry the dirt, and the dirt discharge port 202 on the three-phase fluidized bed cleaning device 200 is opened to discharge the dirt and renew the solid particles.

In yet another aspect of the present invention, a purger unit is provided using a three-phase fluidized bed. According to an embodiment of the present invention, the three-phase fluidized bed purger unit includes at least two purgers 1000 described above. Therefore, at least two of the above-mentioned trash cleaners 1000 are adopted, wherein at least one trash cleaner 1000 condenses steam, at least one other condenser 1000 cleans the steam, and then the state is switched at regular intervals, so that the continuous treatment of the gas to be condensed is realized.

Further, the three-phase cleaner unit further comprises a control device 300, wherein the control device 300 is connected with the meters and/or the actuator components of each cleaner 1000, i.e. the operating state of the cleaner 1000 is switched by the control device 300. Referring to fig. 8, taking the example including two cleaners 1000 shown in fig. 2 to 4, one of the cleaners 1000 is in a condensing state, the other cleaner 1000 is in a cleaning state, and the control device 300 controls the two cleaners 1000 to switch between operating states at a fixed time interval. Preferably, the inlet 101 for the sludge drying steam, the inlet 102 for the fluidizing water, the outlet 103 for the condensed water, the outlet 104 for the uncondensed gas, the outlet 105 for the fluidizing air, the inlet 201 for the fluidizing air and the outlet 202 of each of the cleaners 1000 are provided with control valves (not shown), and the control device 300 is connected with each of the control valves, i.e. the control device 300 controls each of the cleaners 1000 by controlling the control valve on the inlet and outlet of each of the cleaners 1000. Thereby, the automation level of the cleaner unit can be improved. It should be noted that, a person skilled in the art may select a specific structure of the control device 300 according to actual needs as long as the above functions are achieved, and meanwhile, the components of the meter and the actuator of the trash remover 1000 of the present application are conventional structures in the art, and are not described herein again.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.