A steam purification and recovery device

Abstract

The present invention discloses a steam purification and recovery device, the technical scheme of which includes a cylinder, an air inlet, an air outlet and a sewage discharge hole are arranged on the cylinder, a rough purification component and a fine purification component are arranged in the cylinder; the rough purification component includes a limit plate and a wire mesh layer, two limit plates are arranged, the two limit plates are arranged at intervals and are fixed to the inner wall of the cylinder, and a plurality of vents for high-temperature steam to pass through are arranged on the limit plates, and the wire mesh layer is limited between the two limit plates; the fine purification component includes a filter element fixing plate and a plurality of filter element tubes, the filter element fixing plate is used to fix each filter element tube and divide the inside of the cylinder into two parts that can only be conducted through the filter element tube, and the filter element tube is closed at one end close to the rough purification component and is opened at the other end. The device can purify high-temperature steam mixed with impurities, and has high purification efficiency, good purification effect and low filter element maintenance cost.

Description

Technical Field

[0001] The invention relates to the field of high-temperature steam purification, and more particularly to a steam purification and recovery device. Background Art

[0002] A boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. In order to control the quality of boiler steam, the boiler is designed with continuous blowdown (also known as surface blowdown), that is, the boiler continuously discharges part of the boiler water from the part with the highest salt and alkali concentration in the boiler water to reduce the salt content, alkali content and suspended slag content in the boiler water. The purpose is to ensure the quality of the boiler water so that the boiler can operate safely and stably for a long time, and the heat loss of the blowdown is also one of the important factors affecting the thermal efficiency of the boiler.

[0003] Boiler wastewater is high-temperature wastewater, which contains impurities such as phosphates. In order to recycle the heat in the high-temperature wastewater, the high-temperature wastewater can be sprayed into high-temperature steam to instantly vaporize the high-temperature wastewater (that is, the boiler wastewater recovery atomization system). The mixed steam after vaporization is then purified to remove impurities, and pure high-temperature steam is finally obtained. The heat of the original high-temperature wastewater is recovered by utilizing the pure high-temperature steam (that is, the steam purification system after the recovered boiler wastewater is mixed with steam). The flow chart of the boiler wastewater recovery system is as follows: Figure 5 shown.

[0004] Purification and recovery of mixed high-temperature steam is an important part of the boiler wastewater recovery system. Currently, the market uses a large filter element that only allows high-temperature steam to pass through and blocks impurities to purify high-temperature steam mixed with impurities. The purification efficiency is low and the service life of the large filter element is short. The large filter element needs to be replaced frequently, resulting in high maintenance costs for the large filter element. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the present invention is to provide a steam purification and recovery device, which can purify high-temperature steam mixed with impurities and has high purification efficiency, good purification effect and low filter element maintenance cost.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a steam purification and recovery device, comprising a cylinder, the cylinder is provided with an air inlet, an air outlet and a sewage discharge hole, the cylinder is provided with a rough purification component and a fine purification component, and high-temperature gas mixed with impurities enters from the air inlet and passes through the rough purification component and the fine purification component in sequence for purification before being discharged from the air outlet;

[0007] The rough purification component includes a limit plate and a wire mesh layer, wherein two limit plates are provided, the two limit plates are spaced apart and fixed to the inner wall of the cylinder, the limit plates are respectively provided with a plurality of vents for high-temperature steam to pass through, the wire mesh layer is limited between the two limit plates, and when the high-temperature steam mixed with impurities passes through the wire mesh layer, the wire mesh layer blocks the large particles of impurities in the high-temperature steam from passing through;

[0008] The fine purification component includes a filter element fixing plate and a plurality of filter element tubes. The filter element fixing plate is used to fix each of the filter element tubes and divide the interior of the cylinder into two parts that can only be connected through the filter element tubes. The filter element tube is closed at one end close to the rough purification component and is provided with an opening at the other end. When high-temperature steam mixed with impurities passes through the filter element tube, the filter element tube blocks small particle impurities in the high-temperature steam from passing through.

[0009] As a further improvement of the present invention, an annular boss is provided at the opening of the filter element tube, and the filter element tube is clamped on the filter element fixing plate through the annular boss. The filter element fixing plate is also threaded with a plurality of threaded pressure pieces, and the threaded pressure pieces include a circular pressure plate. When the threaded pressure pieces are tightened, the annular boss is pressed against the filter element fixing plate through the circular pressure plate.

[0010] Through such an arrangement, a detachable connection between the filter element tube and the filter element fixing plate is achieved, the threaded connection is simple and convenient, and the filter element tube is firmly installed by pressing the annular boss through the circular pressure plate, avoiding the need to set a through hole on the annular boss, which is beneficial to reducing the processing difficulty of the filter element tube.

[0011] As a further improvement of the present invention, each of the filter core tubes is fixed by three threaded pressing pieces, and the three threaded pressing pieces are evenly distributed in a ring shape along the central axis of the filter core tube.

[0012] Through such an arrangement, the three screw-connected pressure pieces can fix the filter element tube around one circumference, the fixation is more firm, and the stability of the filter element tube is better.

[0013] As a further improvement of the present invention, the filter core tubes and the threaded pressure pieces are arranged in a positive row, and the threaded pressure pieces located between the plurality of filter core tubes press the plurality of filter core tubes.

[0014] Through such an arrangement, one screw-connecting pressing piece can fix multiple filter tubes at the same time, which is beneficial to reduce the number of screw-connecting pressing pieces and can improve the installation efficiency of the filter tubes.

[0015] As a further improvement of the present invention, a filter element support plate for supporting the filter element tube is provided in the cylinder body, the filter element support plate is fixed on the inner wall of the cylinder body, positioning holes for the filter element tube to pass through are provided on the filter element support plate, the positioning holes are arranged one by one with the filter element tube, and a plurality of through holes for high-temperature steam to pass through are also provided on the filter element support plate.

[0016] Through such an arrangement, the filter element support plate can support and position the filter element tube to prevent the filter element from tilting and shaking, and the through hole is arranged to allow high-temperature steam to pass through.

[0017] As a further improvement of the present invention, two filter element support plates are provided, and the two filter element filter plates are respectively arranged in the middle of the filter element tube and at one end of the filter element tube away from the filter element fixing plate.

[0018] By means of such an arrangement, the filter element tube is further supported, the filter element is further prevented from tilting and shaking, and the supporting effect is better.

[0019] As a further improvement of the present invention, a manhole is provided on the side wall of the cylinder, and the manhole is located between two limiting plates.

[0020] With such an arrangement, the wire mesh layer is formed by stacking wire meshes, and people can replace the wire mesh layer regularly through the manhole to maintain the purification effect of the device, and the replaced wire mesh layer can be washed and reused.

[0021] As a further improvement of the present invention, the cylinder is arranged horizontally, and a saddle for supporting the cylinder is arranged on the side wall of the cylinder.

[0022] Through such an arrangement, the horizontal placement of the cylinder is conducive to lowering the height of the cylinder, and the arrangement of the saddle enables the cylinder to maintain a certain distance from the ground and provides fixed support for the cylinder.

[0023] As a further improvement of the present invention, a cleaning hole and a drainage hole are also provided on the cylinder body. The cleaning hole is located above the filter element tube. The cleaning hole is used for the cleaning liquid to enter, and the drainage hole is used for discharging the cleaning liquid.

[0024] By such arrangement, the filter tube can be cleaned by regularly introducing cleaning liquid into the cleaning hole, thereby maintaining the purification effect of the filter tube, and the cleaning liquid after cleaning is discharged from the drain hole.

[0025] As a further improvement of the present invention, a pressure gauge hole and a thermometer hole are also provided on the cylinder, the pressure gauge hole is used to install a pressure gauge, and the thermometer hole is used to install a thermometer.

[0026] Through this setting, people can know the air pressure and temperature inside the cylinder in real time through the pressure gauge and thermometer.

[0027] The beneficial effects of the present invention are as follows: after entering the cylinder, the high-temperature steam containing impurities first passes through the wire mesh layer, which filters large particles of impurities, and then passes through the filter tube, which filters small particles of impurities. The high-temperature steam is purified twice by the rough purification component and the fine purification component, so that the device has a good purification effect on the high-temperature steam. The provision of several filter tubes is conducive to improving the purification efficiency. The rough purification component can purify most of the impurities, which is conducive to reducing the purification burden of the filter tube, increasing the service life of the filter tube, and thus reducing the maintenance cost of the filter tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention;

[0029] Figure 2 It is a left side view of the present invention;

[0030] Figure 3 It is a schematic diagram of the connection structure between the filter element fixing plate and the filter element tube;

[0031] Figure 4 It is a structural schematic diagram of the filter element support plate;

[0032] Figure 5 This is the flow chart of the boiler blowdown wastewater recovery system.

[0033] Figure numerals: 1. Cylinder; 11. Air inlet; 12. Air outlet; 13. Drain hole; 14. Manhole; 15. Cleaning hole; 16. Drain hole; 17. Pressure gauge hole; 18. Thermometer hole; 2. Coarse purification component; 21. Limiting plate; 22. Wire mesh layer; 3. Fine purification component; 31. Filter element fixing plate; 32. Filter element tube; 321. Annular boss; 33. Screw-on pressing piece; 331. Circular pressing plate; 34. Filter element supporting plate; 341. Positioning hole; 342. Through hole; 4. Saddle. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0035] Reference Figure 1 , Figure 2As shown, a steam purification and recovery device of this embodiment includes a cylinder 1, which is arranged horizontally, and a saddle 4 for supporting the cylinder 1 is arranged on the side wall of the cylinder 1. The cylinder 1 is provided with an air inlet 11, an air outlet 12 and a drain hole 13. The air inlet 11 is located at one end of the cylinder 1, and the other end of the cylinder 1 is provided with a pressure gauge hole 17 and a thermometer hole 18, wherein the pressure gauge hole 17 is used to install a pressure gauge, and the thermometer hole 18 is used to install a thermometer. The air outlet 12 is arranged at one end away from the air inlet 11, and the air outlet 12 is located away from the saddle 4, that is, the air outlet 12 opens upward, and the drain hole 13 is arranged in the middle of the cylinder 1, and is located near the saddle 4, that is, the drain hole 13 opens downward. The cylinder 1 is provided with a rough purification component 2 and a fine purification component 3, and the high-temperature gas mixed with impurities enters from the air inlet 11 and is purified by the rough purification component 2 and the fine purification component 3 in turn and then discharged from the air outlet 12.

[0036] Reference Figure 1 As shown, the rough purification component 2 includes a limit plate 21 and a wire mesh layer 22. Two limit plates 21 are provided. The two limit plates 21 are spaced apart and fixed to the inner wall of the cylinder 1. The limit plates 21 are respectively provided with a plurality of vents for high-temperature steam to pass through. The wire mesh layer 22 is limited between the two limit plates 21. The wire mesh layer 22 is formed by stacking wire meshes. When the high-temperature steam mixed with impurities passes through the wire mesh layer 22, the wire mesh layer 22 blocks the large particles of impurities in the high-temperature steam from passing through. A manhole 14 is provided on the side wall of the cylinder 1. The manhole 14 is located between the two limit plates 21. People can replace the wire mesh layer 22 through the manhole 14.

[0037] Reference Figure 1 As shown, the fine purification component 3 includes a filter element fixing plate 31 and a plurality of filter element tubes 32. The filter element fixing plate 31 is used to fix each of the filter element tubes 32 and divide the interior of the cylinder 1 into two parts that can only be connected through the filter element tubes 32. The filter element tube 32 is made of amino composite nanomaterials and purchased from Zhongnengfa Ke Energy Saving and Environmental Protection (Beijing) Co., Ltd., model ZNFK-FHANMCL-01. The filter element tube 32 is closed at one end close to the rough purification component 2, and is provided with an opening at the other end.

[0038] Reference Figure 1 , Figure 4As shown, a filter element support plate 34 for supporting the filter element tube 32 is provided in the cylinder 1, and two filter element support plates 34 are provided, and the two filter element filter plates are respectively provided in the middle of the filter element tube 32 and at one end of the filter element tube 32 away from the filter element fixing plate 31. The filter element support plate 34 is fixed on the inner wall of the cylinder 1, and a positioning hole 341 for the filter element tube 32 to pass through is provided on the filter element support plate 34, and the inner diameter of the positioning hole 341 is equal to or slightly larger than the outer diameter of the filter element tube 32, and the positioning holes 341 are arranged one-to-one with the filter element tube 32, and a plurality of through holes 342 for high-temperature steam to pass through are also provided on the filter element support plate 34, and the lower end of the filter element tube 32 is hemispherical or conical, so that the lower end of the filter element tube 32 can be inserted into the positioning hole 341.

[0039] Reference Figure 1 , Figure 3 As shown, the installation structure of the filter element tube 32 and the filter element fixing plate 31 is as follows: an annular boss 321 is provided at the opening of the filter element tube 32, and the filter element tube 32 is clamped on the filter element fixing plate 31 through the annular boss 321. The filter element fixing plate 31 is also screwed with a plurality of screw-connected pressure pieces 33, and the screw-connected pressure pieces 33 include a circular pressure plate 331. When the screw-connected pressure pieces 33 are tightened, the annular boss 321 is pressed against the filter element fixing plate 31 through the circular pressure plate 331. The screw-connected pressure pieces 33 use anti-loosening bolts or thick gaskets. When the anti-loosening bolts are tightened, the thick gaskets press the annular boss 321. Each filter element tube 32 is fixed by three screw-connected pressure pieces 33, and the three screw-connected pressure pieces 33 are evenly distributed in a ring shape along the central axis of the filter element tube 32, and the filter element tube 32 and the screw-connected pressure pieces 33 are all arranged in a row. The threaded pressing piece 33 located between the multiple filter tubes 32 presses the multiple filter tubes 32, that is, when a threaded pressing piece 33 located between the multiple filter tubes 32 is tightened, the circular pressure plate 331 presses the multiple annular bosses 321, so that the multiple filter elements can be fixed at the same time.

[0040] Reference Figure 1 , Figure 2 As shown, the cylinder 1 is also provided with a cleaning hole 15 and a drain hole 16, the cleaning hole 15 is located above the filter element tube 32, and the cleaning hole 15 and the drain hole 16 are respectively located on both sides of the filter element fixing plate 31. The cleaning hole 15 opens upward, and the cleaning hole 15 is used for the entry of cleaning liquid, and the cleaning liquid is water. The drain port opens downward, and the drain hole 16 is used to discharge the cleaning liquid. A heating steam inlet hole is also provided in the cylinder 1, and the heating steam inlet hole is used to add pure steam with a higher temperature to increase the overall temperature in the cylinder 1.

[0041] Working principle:

[0042] High-temperature steam mixed with impurities enters the cylinder 1 through the air inlet 11, and is first roughly purified by the wire mesh layer 22 in the rough purification component 2. Large impurities in the high-temperature steam are filtered by the wire mesh layer 22. When the roughly filtered high-temperature steam passes through a number of filter tubes 32 in the fine purification component 3, small impurities in the high-temperature steam are filtered by the filter tubes 32. Finally, the pure high-temperature steam after two purifications is discharged through the air outlet 12. Impurities in the cylinder 1 can be discharged through the drain hole 13. When the filter tube 32 needs to be cleaned, cleaning liquid can be introduced from the cleaning hole 15, and the cleaning liquid can be discharged from the drain hole 16 after cleaning. People can change the wire mesh layer 22 through the manhole 14 to maintain the purification effect of the wire mesh layer 22.

[0043] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A steam purification and recovery device, comprising a cylinder (1), wherein the cylinder (1) is provided with an air inlet (11), an air outlet (12) and a sewage discharge hole (13), characterized in that: The cylinder (1) is provided with a rough purification component (2) and a fine purification component (3); high-temperature gas mixed with impurities enters from the air inlet (11) and passes through the rough purification component (2) and the fine purification component (3) in sequence for purification before being discharged from the air outlet (12); The rough purification component (2) comprises a limit plate (21) and a wire mesh layer (22), wherein two limit plates (21) are provided, the two limit plates (21) are arranged at intervals and are fixed to the inner wall of the cylinder (1), the limit plates (21) are respectively provided with a plurality of vent holes for high-temperature steam to pass through, the wire mesh layer (22) is limited between the two limit plates (21), and when the high-temperature steam mixed with impurities passes through the wire mesh layer (22), the wire mesh layer (22) blocks large particles of impurities in the high-temperature steam from passing through; The fine purification component (3) comprises a filter element fixing plate (31) and a plurality of filter element tubes (32); the filter element fixing plate (31) is used to fix each of the filter element tubes (32) and to divide the interior of the cylinder (1) into two parts that can only be connected through the filter element tubes (32); one end of the filter element tube (32) close to the rough purification component (2) is closed, and the other end is provided with an opening; when high-temperature steam mixed with impurities passes through the filter element tube (32), the filter element tube (32) blocks small particles of impurities in the high-temperature steam from passing through; An annular boss (321) is provided at the opening of the filter element tube (32), and the filter element tube (32) is clamped on the filter element fixing plate (31) through the annular boss (321). The filter element fixing plate (31) is also threaded with a plurality of threaded pressure pieces (33), and the threaded pressure pieces (33) include a circular pressure plate (331). When the threaded pressure pieces (33) are screwed, the annular boss (321) is pressed against the filter element fixing plate (31) through the circular pressure plate (331); The filter tubes (32) and the threaded pressure pieces (33) are arranged in a positive row, and the threaded pressure pieces (33) located between the plurality of filter tubes (32) press the plurality of filter tubes (32); A filter element support plate (34) for supporting the filter element tube (32) is arranged in the cylinder (1); the filter element support plate (34) is fixed to the inner wall of the cylinder (1); a positioning hole (341) for the filter element tube (32) to pass through is arranged on the filter element support plate (34); the positioning holes (341) and the filter element tubes (32) are arranged one-to-one correspondingly; and a plurality of through holes (342) for high-temperature steam to pass through are also arranged on the filter element support plate (34); Each of the filter tubes (32) is fixed by three screw-connected pressing pieces (33), and the three screw-connected pressing pieces (33) are evenly distributed in a ring shape along the central axis of the filter tube (32). The screw-connected pressing pieces (33) located between the plurality of filter tubes (32) press the plurality of filter tubes (32), that is, when a screw-connected pressing piece (33) located between the plurality of filter tubes (32) is tightened, the circular pressing plate (331) presses the plurality of annular bosses (321).

2. A steam purification and recovery device according to claim 1, characterized in that: Two filter element support plates (34) are provided, and the two filter element filter plates are respectively arranged in the middle of the filter element tube (32) and at one end of the filter element tube (32) away from the filter element fixing plate (31).

3. A steam purification and recovery device according to claim 1, characterized in that: A manhole (14) is provided on the side wall of the cylinder (1), and the manhole (14) is located between two limiting plates (21).

4. A steam purification and recovery device according to claim 1, characterized in that: The cylinder (1) is arranged horizontally, and a saddle (4) for supporting the cylinder (1) is arranged on the side wall of the cylinder (1).

5. A steam purification and recovery device according to claim 4, characterized in that: The cylinder (1) is also provided with a cleaning hole (15) and a drainage hole (16); the cleaning hole (15) is located above the filter element tube (32); the cleaning hole (15) is used for allowing cleaning liquid to enter; and the drainage hole (16) is used for discharging the cleaning liquid.

6. A steam purification and recovery device according to claim 1, characterized in that: The cylinder (1) is also provided with a pressure gauge hole (17) and a thermometer hole (18); the pressure gauge hole (17) is used for installing a pressure gauge, and the thermometer hole (18) is used for installing a thermometer.

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